WO2021143608A1 - Acoustic agglomeration dust removal apparatus for converter primary flue gas - Google Patents

Acoustic agglomeration dust removal apparatus for converter primary flue gas Download PDF

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Publication number
WO2021143608A1
WO2021143608A1 PCT/CN2021/070586 CN2021070586W WO2021143608A1 WO 2021143608 A1 WO2021143608 A1 WO 2021143608A1 CN 2021070586 W CN2021070586 W CN 2021070586W WO 2021143608 A1 WO2021143608 A1 WO 2021143608A1
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Prior art keywords
dust removal
agglomeration
module
sonic
flue gas
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PCT/CN2021/070586
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French (fr)
Chinese (zh)
Inventor
张荣初
刘宇清
孙卫国
邵鹏
杨庆宇
李容基
张震
邹怡然
Original Assignee
南京常荣声学股份有限公司
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Priority claimed from CN202010030579.1A external-priority patent/CN111068356A/en
Priority claimed from CN202010236850.7A external-priority patent/CN111569580A/en
Application filed by 南京常荣声学股份有限公司 filed Critical 南京常荣声学股份有限公司
Priority to KR1020227014018A priority Critical patent/KR20220069088A/en
Publication of WO2021143608A1 publication Critical patent/WO2021143608A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
    • B01D49/006—Separating dispersed particles from gases, air or vapours by other methods by sonic or ultrasonic techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B01D47/063—Spray cleaning with two or more jets impinging against each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
    • B01D51/02—Amassing the particles, e.g. by flocculation
    • B01D51/06—Amassing the particles, e.g. by flocculation by varying the pressure of the gas or vapour
    • B01D51/08—Amassing the particles, e.g. by flocculation by varying the pressure of the gas or vapour by sound or ultrasonics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact

Definitions

  • the invention belongs to the field of metallurgy, and particularly designs a converter primary flue gas dust removal device using composite acoustic wave agglomeration to remove smoke and dust.
  • Converter steelmaking is the most important steelmaking method in the world. At present, steel mills mainly use OG wet method and LT dry method to deal with the high dust content flue gas generated in the converter production process. However, neither the dry method nor the wet method can meet the requirement of flue gas particulate matter emission limit ⁇ 10mg/m 3 .
  • the Chinese patent discloses a device suitable for ultra-low discharge of converter gas dust removal based on sonic agglomeration.
  • the device includes a bracket, a cylinder is arranged on the bracket, a gas inlet pipe and several sets of sonic agglomeration devices are arranged on the stent, and the sonic agglomeration device
  • the upper cylinder is provided with water mist dust removal nozzles, dehydration dust collectors and flushing nozzles in sequence.
  • the top of the cylinder is provided with a gas outlet pipe.
  • the gas inlet pipe guides the flue gas into the cylinder and enters the cylinder to pass through the sound wave from bottom to top. Reunion, water mist dust removal and dehydration dust removal, and then enter the dust removal system pipeline.
  • the sonic frequency of the sonic agglomeration device used only is single frequency, which cannot adapt to complex working conditions, the water mist dust removal nozzle has a large particle size, the dehydration dust collector and the flushing nozzle cannot remove the fine particles in the dust, especially Ultrafine particles such as PM2.5.
  • the present invention provides a converter primary flue gas composite sonic dust removal device, which uses single-frequency, narrowband and other composite sonic agglomeration dust removal equipment to solve the problem of high dust emission of converter gas.
  • the present invention achieves the above-mentioned technical objects through the following technical means.
  • a converter primary flue gas sonic agglomeration and dust removal device comprising a shell, one end of the shell is provided with an inlet, and the other end is provided with an outlet, the shell is provided with a sonic descaling and dust removal module and at least a first-level sonic agglomeration and dust removal module in sequence along the flow direction;
  • the sonic descaling and dust removal module includes a sonic descaling module and a swirling dust removal module, and the inlet is provided with a sonic descaling module for sonic descaling;
  • the sonic agglomeration dust removal module includes a swirling dust removal module and a sonic agglomeration module.
  • the sound wave descaling module includes a horn connected to a sound wave generator, and the sound wave generator is used to generate sound waves for descaling.
  • the cyclone dust removal module includes a washing assembly and a dust removal assembly, and the washing assembly surrounds the windward and side surfaces of the dust removal assembly.
  • the bottom of the dust removal assembly is provided with a drainage port.
  • the flushing assembly includes a cleaning device with flushing nozzles, wherein the flushing nozzles are arranged facing the windward and side surfaces of the dust removal assembly, and the dust removal assembly is a cyclone dust collector.
  • the acoustic wave agglomeration module includes a seed particle generating component and a sonic wave agglomeration device, the seed particle generating component includes an atomization generating device, and the atomizing generating device is used to form an atomization generating area inside the housing; the sonic wave The agglomeration device is used to generate sound waves in the area where the atomization occurs.
  • the sound wave agglomeration device includes an adjustable frequency sound wave sounder, a fixed frequency sound wave sounder and a horn, the sound wave output end of the adjustable frequency sound wave sounder is installed at the end of the horn, and the sound wave output end of the fixed frequency sound wave sounder Installed on the side of the horn through the barrel.
  • control system also includes a control system and a sensor for detecting the size and content of the smoke and dust in the input end of the sound wave agglomeration module; the control system adjusts the frequency and sound of the sound wave emitted by the sound wave agglomeration module according to the sensor detection value. powerful.
  • control system obtains the most abundant dust particles sizes and particle content of the particles i and j, the set of particle diameter D i i, i is the particle volume content V i, for the particle diameter D i j , The volume content of particle i is v j , and d j >d i ;
  • the control system determines the sound wave frequency and sound intensity emitted by the sound wave agglomeration module according to the following formula:
  • ⁇ is the reunion efficiency, %
  • ⁇ is the correction factor
  • p is the sound pressure emitted by the acoustic reunion module, Pa;
  • f is the frequency of the sound wave emitted by the sound wave agglomeration module, Hz;
  • d i is the particle size of particle i, ⁇ m
  • d j is the particle size of particle j, ⁇ m
  • v i is the volume content of particle i, %
  • v j is the volume content of particle j, %.
  • a sonic descaling module, a first-stage sonic agglomeration dust removal module, and a second-stage sonic agglomeration dust removal module are sequentially arranged in the casing along the flow direction;
  • the first-stage sonic agglomeration dust removal module includes a first-stage swirling dust removal module and a first-stage sonic agglomeration module
  • the second-level acoustic agglomeration dust removal module includes a second-level cyclone dust removal module and a second-level acoustic agglomeration module;
  • the first sensor is used to detect the particle size and content of the dust in the input end of the first-level acoustic agglomeration module;
  • the control system Adjust the frequency and sound intensity of the sound wave emitted by the first-level acoustic wave agglomeration module according to the detection value of the first sensor;
  • the second sensor is used to detect the size and content of the smoke and dust in the input
  • the control system controls the first-level acoustic wave agglomeration module
  • the frequency of the emitted sound wave is 500-1000 Hz and the sound intensity is> 150dB
  • the second sensor detects that the particulate content of PM>2.5 in the smoke and dust in the input end of the secondary acoustic wave agglomeration module is ⁇ 10% and the dust content is less than 20mg
  • the control system controls the frequency of the sound waves emitted by the second-level sound wave agglomeration module to be 1000-2000 Hz and sound intensity> 155 dB.
  • a condensing swirling water collection device which is connected to the outlet and used for removing moisture in the flue gas.
  • the condensing swirling water collection equipment includes an equipment body, and a number of swirling water collection components are arranged inside the equipment body for guiding the flue gas through the swirling flow; one end of the equipment body is provided with a condensed flue gas inlet, and the other One end is provided with a condensing flue gas outlet for condensing outside the swirling water collection assembly.
  • the cyclone water collection component is a cyclone dehydrator, and a plurality of the cyclone dehydrator arrays are arranged inside the equipment body.
  • the converter primary flue gas sonic agglomeration dust removal device of the present invention is used for sonic descaling through the sonic descaling module, and the particles in the flue gas are processed step by step through at least one level of sonic agglomeration dust removal module, and finally the treated smoke is realized Gas, dust content ⁇ 10mg/m 3 , which can meet the requirements of ultra-low emission.
  • the converter primary flue gas sonic agglomeration dust removal device of the present invention uses the swirling dust removal module in the sonic descaling module to remove large-diameter particles (particle size> 10 ⁇ m) carried in the flue gas in the form of swirling flow .
  • the seed particles emitted by the seed particle generation component through the sonic agglomeration module are used as agglomeration nuclei.
  • the small-diameter particles (particle size) in the flue gas ⁇ 10 ⁇ m) agglomerate into large-diameter particles (particle size> 10 ⁇ m), and the cyclone dust removal module in the sonic agglomeration dust removal module swirls to remove.
  • the converter primary flue gas sonic agglomeration dust removal device of the present invention realizes adaptive control through a control system and sensors.
  • the moisture in the flue gas is removed by a condensing swirling water collection device.
  • the condensing swirling water collection device is provided with a number of swirling water collection components. The swirling flow guides the flue gas, and the outside of the swirling water collection component realizes condensation.
  • Figure 1 is a schematic diagram of a converter primary flue gas sonic dust removal device provided in Example 1.
  • Example 2 is a schematic diagram of the structure of the acoustic wave agglomeration component in Example 1.
  • Fig. 3 is a schematic diagram of a converter primary flue gas sonic dust removal device provided in embodiment 2.
  • FIG. 4 is a schematic diagram of the condensing cyclone water collection equipment of embodiment 2.
  • Fig. 5 is a schematic diagram of the arrangement scheme of the primary flue gas sonic dust removal device of the converter in Example 3 in the converter flue gas dust removal of the steel plant.
  • Figure 6 is a three-dimensional view of the swirling water collection assembly of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present invention, “plurality” means two or more than two, unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • installed can be a fixed connection or a detachable connection.
  • integrally connected it can be a mechanical connection or an electrical connection
  • it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.
  • the converter primary flue gas sonic agglomeration and dust removal device of the present invention includes a housing 1. One end of the housing 1 is provided with an inlet 11, and the other end is provided with an outlet 12. There are sonic descaling and dust removal modules, primary sonic agglomeration dust removal module 4 and second sonic agglomeration dust removal module 5; the sonic descaling and dust removal module includes sonic descaling module 2 and swirling dust removal module 3, the inlet 11 is equipped with sonic dust removal module
  • the fouling module 2 is used for sonic descaling;
  • the first-level sonic agglomeration dust removal module 4 includes a first-level swirling dust removal module and a first-level sonic agglomeration module;
  • the second sonic agglomeration dust removal module 5 includes a second-level swirling dust removal module and Second-level acoustic reunion module.
  • the sound wave descaling module 2 includes a horn 22 connected to a sound wave generator 21, the horn 202 faces the inside of the housing 1, and the sound wave generator 21 is used to generate sound waves for descaling.
  • the cyclone dust removal module 3 includes a first washing assembly 31 and a first dust removal assembly 32.
  • the first washing assembly 31 is arranged directly opposite to the windward surface and directly above the first dust removal assembly 32.
  • the first washing assembly 31 includes a water pump connected The flushing nozzle, wherein the flushing nozzle is arranged directly on the windward surface and directly above the first dust removal assembly 32, and the first dust removal assembly 32 is a cyclone dust collector.
  • the housing at the bottom of the first dust removal assembly 32 is provided with a first drainage port 13.
  • the first-level sonic agglomeration module includes a first-level seed particle generation assembly 41 and a first-level sonic agglomeration device 42, wherein the first-level seed particle generation assembly 41 includes a micro-atomization nozzle connected to a high-pressure water pump.
  • the outlet end of the atomization nozzle of the generating device is arranged inside the housing 1 to form an atomization generating area
  • the first-stage acoustic wave agglomeration device 42 is arranged on the housing 1, and the acoustic wave output end of the first-stage acoustic wave agglomeration device 42 is facing the Area where fogging occurs.
  • the one-stage cyclone dust removal module includes a second flushing assembly 43 and a second dust removal assembly 44, the second flushing assembly 43 is arranged facing the windward surface and directly above the second dust removal assembly 44, and the second flushing assembly 43 includes The flushing nozzle connected to the water pump, wherein the flushing nozzle is arranged directly on the windward surface and directly above the second dust removal assembly 44, and the second dust removal assembly 44 is a cyclone dust collector.
  • the housing at the bottom of the second dust removal assembly 44 is provided with a second drain port 14.
  • the secondary acoustic wave agglomeration module includes a secondary seed particle generation assembly 51 and a secondary acoustic wave agglomeration device 52, wherein the secondary seed particle generation assembly 51 includes a micro atomization nozzle connected to a high-pressure water pump.
  • the outlet end of the atomization nozzle of the generating device is arranged inside the housing 1 to form an atomization generating area
  • the secondary acoustic wave agglomeration device 52 is arranged on the housing 1, and the sound wave output end of the secondary acoustic wave agglomeration device 52 is directly opposite to the Area where fogging occurs.
  • the two-stage cyclone dust removal module includes a second washing assembly 53 and a second dust removal assembly 54.
  • the second washing assembly 53 is arranged facing the windward surface and directly above the second dust removal assembly 54, and the second washing assembly 53 includes The flushing nozzle connected to the water pump, wherein the flushing nozzle is arranged directly on the windward surface and directly above the second dust removal assembly 54, and the second dust removal assembly 54 is a cyclone dust collector.
  • the housing at the bottom of the second dust removal assembly 54 is provided with a third drain 15.
  • the first-level sound wave reunion device 42 includes an adjustable frequency sound wave sound generator 421, a fixed frequency sound wave sound generator 422, and a horn 423.
  • the adjustable frequency sound wave sound generator 421 is installed in At the end of the horn 423, the fixed-frequency sound wave generator 422 is installed on the side of the horn 423 through a barrel.
  • the barrel may also be a horn.
  • the adjustable frequency sound wave generator 421 can not only emit 1000-2000 Hz sound waves for reunion, but also emit 40-200 Hz descaling sound waves; in addition, the fixed frequency sound source of the fixed frequency sound wave sound generator 422 is arranged in the horn 423 and works At the same time, positive pressure can be formed, which can prevent the flue gas from flowing back and prevent abrasion. On the other hand, the arrangement in the horn 423 can prevent the scour of the flue gas and prevent abrasion.
  • the dust-containing flue gas processed by the converter primary dust removal system enters the converter primary flue gas dust removal device from the inlet 101, and sequentially passes through the sonic descaling and dust removal module and the first-level sonic agglomeration dust removal module (it can be one or more).
  • the sonic descaling and dust removal module is coarse agglomeration, which removes the large-diameter particles (particle size> 10 ⁇ m) carried in the flue gas in the form of swirling flow.
  • the first-level sonic agglomeration module is sonic agglomeration.
  • the seed particles emitted by the first-level seed particle generation component 41 are used as the agglomeration nucleus.
  • one or more sonic agglomeration dust removal modules can be arranged.
  • a first flushing assembly 31 is arranged on the windward surface and directly above the first dust removal assembly 32, and a second flushing assembly 43 is arranged on the windward surface and directly above the second dust removal assembly 44.
  • the flushing water of the second flushing assembly 43 is used to flush the agglomeration.
  • the droplets and smoke attached to the inner and outer walls of the module maintain the performance of the reunion module.
  • the flushing water generated by the first flushing assembly 31 and the second flushing assembly 43 flows out through the first drain port 13 and the second drain port 14 respectively.
  • the flue gas after sonic dust removal is discharged from the outlet 12.
  • the present invention also includes a control system 18 and a sensor, the sensor is used to detect the size and content of the smoke dust in the input end of the acoustic wave agglomeration module; the control system 18 adjusts the acoustic wave according to the sensor detection value The frequency and intensity of the sound waves emitted by the reunion module.
  • the control system 18 acquires the most abundant soot particles sizes and particle content of the particles i and j, the set of particle diameter D i i, i is the particle volume content V i, for the particle diameter D i j, The volume content of particle i is v j , and d j >d i ;
  • the control system 18 determines the sound wave frequency and sound intensity emitted by the sound wave reunion module according to the following formula:
  • ⁇ is the agglomeration efficiency, %, the agglomeration efficiency is generally greater than 90%;
  • ⁇ is the correction coefficient, generally 0.03, which is related to the working conditions
  • p is the sound pressure emitted by the acoustic reunion module, Pa;
  • f is the frequency of the sound wave emitted by the sound wave agglomeration module, Hz;
  • d i is the particle size of particle i, ⁇ m
  • d j is the particle size of particle j, ⁇ m
  • v i is the volume content of particle i, %
  • v j is the volume content of particle j, %.
  • the first sensor 181 is used to detect the size and content of the smoke and dust in the input end of the first-level acoustic agglomeration module, that is, the size and content of the smoke and dust that enters the first-level seed particle generation assembly 41;
  • the control system 18 adjusts the frequency and intensity of the sound waves emitted by the first-level acoustic agglomeration module according to the detection value of the first sensor 181;
  • the second sensor 182 is used to detect the size and size of the smoke and dust in the input end of the second-level acoustic agglomeration module
  • the content is the size and content of the smoke and dust entering the secondary seed particle generation component 51; the control system 18 adjusts the frequency and sound intensity of the sound wave emitted by the secondary acoustic wave agglomeration module according to the detection value of the second sensor 182.
  • the control system 18 controls the sonic descaling module 2 to produce a sound wave with a frequency of 40-200 Hz and a sound intensity of 155dB.
  • the control system 18 controls the sound wave frequency of the first-level acoustic agglomeration module to 500 ⁇ 1000Hz according to the detection value of the first sensor 181 Strong 150 ⁇ 155dB; after passing through the first-level acoustic agglomeration dust removal module 4, the smoke and dust entering the second-level seed particle generation assembly 51 contains 10% PM2.5 ⁇ PM10 particles, and 90% of PM ⁇ 2.5 particles.
  • the control system 18 controls the frequency of the sound waves emitted by the second-level sonic agglomeration module to 1000-2000 Hz and the sound intensity to 155-160 dB according to the detection value of the second sensor 182; after the second-level sonic agglomeration dust removal module 5 It is discharged from the outlet 12. At this time, the content of particles with PM ⁇ 2.5 in the smoke and dust in the outlet is 100%, and the dust content is less than 10mg.
  • the first-level acoustic agglomeration dust removal module 4 is used to remove PM2.5 to PM10
  • the second-level acoustic agglomeration dust removal module 5 is used to remove particles below PM2.5.
  • the outlet 102 of the acoustic agglomeration dust removal device 1 is connected to a condensing swirling water collection device 17.
  • the condensing swirling water collection equipment 17 includes an equipment body, and a number of swirling water collection components 17-1 are arranged inside the equipment body for guiding the flue gas through the swirling flow; one end of the equipment body is provided with condensing flue gas
  • the inlet assembly 17-2 is provided with a condensed flue gas outlet assembly 17-3 at the other end for condensing outside the swirling water collection assembly 17-1.
  • the cyclone water collection assembly 17-1 is a cyclone dehydrator.
  • the swirling water collection assembly 17-1 is a cylinder body with spiral guide vanes installed, and the outside of the cylinder body is in contact with the cooling medium to realize the flow diversion inside the cylinder body. Condensation on the outside of the cylinder.
  • the acoustic wave agglomeration dust removal equipment and the condensing swirl water collection equipment 17 are sequentially arranged on the flue gas pipeline according to the flow direction of the flue gas.
  • the flue gas of the high-temperature sintering mixer containing soot enters the sonic agglomeration dust removal equipment from the equipment entrance, and sequentially passes through the sonic descaling and dust removal module, and the first-level sonic agglomeration dust removal module (can be one or more).
  • the acoustic wave descaling and dust removal module is coarse agglomeration, which removes the large-size droplets carried in the flue gas in the form of swirling flow.
  • the first-level sonic agglomeration module is sonic agglomeration.
  • the seed particles emitted by the first-level seed particle generation component 41 are used as the agglomeration nucleus.
  • one or more sonic agglomeration dust removal modules can be arranged.
  • a first flushing assembly 31 is arranged on the windward surface and directly above the first dust removal assembly 32, and a second flushing assembly 43 is arranged on the windward surface and directly above the second dust removal assembly 44.
  • the flushing water of the second flushing assembly 43 is used to flush the agglomeration.
  • the droplets and smoke attached to the inner and outer walls of the module maintain the performance of the reunion module.
  • the flushing water generated by the first flushing assembly 31 and the second flushing assembly 43 flows out through the first drain port 13 and the second drain port 14 respectively.
  • the flue gas after sonic dust removal treatment has a dust content of ⁇ 12mg/m 3 .
  • the flue gas after dust removal flows out from the equipment outlet 12, enters from the condensing flue gas inlet assembly 17-2, and reaches the inside of the condensing swirling water collection device 17, passing through the swirling water collection assembly 17-1 and then from the condensing flue gas outlet assembly 17- 3 Outflow.
  • a spiral baffle is provided inside the swirling water collection assembly 17-1, which is used to increase the heat exchange area and guide the flue gas.
  • the cooling water flows in from the cooling water inlet assembly 17-4 and flows out from the cooling water outlet assembly 17-5, and exchanges heat with the flue gas in the swirling water collection assembly 17-1.
  • the moisture contained in the flue gas is cooled and swirled Remove after removal.
  • Fig. 5 it is the dedusting arrangement scheme of a converter primary flue gas sonic dust removal device in a certain iron and steel enterprise 1# converter flue gas.
  • the fume hood 7 is installed above the converter 6, and the negative pressure of the fan 13 reduces the converter flue gas. 6
  • the high-temperature and high-dust flue gas produced by the operation is sucked into the vaporization cooling flue 8.
  • the high-temperature and high-dust flue gas is cooled in it and then enters the one-wen washing tower 9, the ring-seam two-wen tower 10, and the dehydrator 11.
  • the dust fume becomes a dusty fume with a temperature of 55-70°C.
  • the flue gas then enters the converter primary flue gas sonic agglomeration dust removal device 12 provided by the present invention. After dust removal, the flue gas with high CO content passes through the water seal 15 and enters the gas cabinet 16, and the low CO content is ignited and released from the emission tower 14 Burn into the air.
  • the middle of the shell is cylindrical, and the two ends are truncated cones; the inlet and the outlet are flange-shaped, and they are flanged to the flue gas pipeline.
  • the sonic generator and the horn of the sonic descaling module are connected by a flange, and the horn is welded to the inclined surface of the shell close to the inlet round table.
  • the adjustable frequency sound wave generator in the sound wave reunion device is connected with the horn flange, and the horn is welded and installed on the shell pipe wall; the number of the sound wave reunion device can be one or more. If there are multiple sonic agglomeration devices, they are welded in the shell in order.
  • the sound source frequency of the sound wave agglomeration dust removal module may include a fixed frequency of 1000 Hz, a sweep frequency of 500 Hz to 2000 Hz, a narrow band of 630 Hz to 800 Hz, and a sound pressure level of 150 dB to 160 dB.
  • the particle size of the water mist particles formed by the seed particle generating assembly can reach 20 ⁇ m.
  • the particulate matter in the cyclone dust removal module 3 is cut into a particle size of 10 ⁇ m, and the second flushing assembly 43 in the first-level sonic agglomeration dust removal module 4 or the third flushing assembly 53 in the second-level sonic agglomeration dust removal module 5 The particles are cut into a particle size of 1 ⁇ m.
  • the flue gas processed by a converter primary flue gas sonic dust removal device provided in this embodiment has a dust content of ⁇ 10 mg/m 3 , which can meet the requirements of ultra-low emission.

Abstract

Provided in the present invention is an acoustic agglomeration dust removal apparatus for primary flue gas of a converter, comprising a housing, one end of the housing being provided with an inlet, another end being provided with an outlet, and the housing having provided therein in sequence along a flow direction an acoustic descaling and dust removal module and at least one acoustic agglomeration dust removal module; the acoustic descaling and dust removal module comprising an acoustic descaling module and a cyclone dust removal module, the acoustic descaling module being disposed at the inlet and used for acoustic descaling; the acoustic agglomeration dust removal module comprising a cyclone dust removal module and an acoustic agglomeration module. The present invention can realize ultra-low primary flue gas flue dust emissions for a converter, flue dust undergoing cyclone coarse dust removal, then undergoing agglomeration by the acoustic agglomeration module, and entering the cyclone dust removal module for emission; flue gas which has gone through processing has a dust content of ≤10 mg/m3, and can satisfy ultra-low emissions requirements.

Description

一种转炉一次烟气声波团聚除尘装置Dust removal device for primary flue gas acoustic wave agglomeration of converter 技术领域Technical field
本发明属于冶金领域，特别设计一种利用复合声波团聚去除烟尘的转炉一次烟气除尘装置。The invention belongs to the field of metallurgy, and particularly designs a converter primary flue gas dust removal device using composite acoustic wave agglomeration to remove smoke and dust.
背景技术Background technique
随着生态环境意识的进一步提高，对钢铁行业污染物排放的要求愈加严格。钢铁行业总产量巨大，排放水平参差不齐，行业总排放量依然高企不下。据测算，2017年钢铁行业二氧化硫、氮氧化物和颗粒物排放量分别占全国排放总量的7％、10％、20％左右。燃煤电厂实施超低排放以来，火电行业污染物排放量大幅度下降。2017年钢铁行业主要污染物排放量已超过电力行业，成为工业部门最大的污染物排放来源。With the further improvement of ecological and environmental awareness, the requirements for pollutant discharge in the steel industry have become more stringent. The total output of the steel industry is huge, the emission level is uneven, and the total emissions of the industry are still high. According to estimates, in 2017, the emissions of sulfur dioxide, nitrogen oxides and particulate matter in the steel industry accounted for about 7%, 10%, and 20% of the total national emissions respectively. Since the implementation of ultra-low emissions by coal-fired power plants, pollutant emissions from the thermal power industry have dropped significantly. In 2017, the discharge of major pollutants from the iron and steel industry exceeded that of the power industry, becoming the largest source of pollutants in the industrial sector.
转炉炼钢是世界上最主要的炼钢方法，当前钢厂主要使用OG湿法和LT干法来来处理转炉生产过程中产生的高含尘量烟气。但无论是干法还是湿法，均无法满足烟气颗粒物排放限值≤10mg/m 3的要求。 Converter steelmaking is the most important steelmaking method in the world. At present, steel mills mainly use OG wet method and LT dry method to deal with the high dust content flue gas generated in the converter production process. However, neither the dry method nor the wet method can meet the requirement of flue gas particulate matter emission limit ≤ 10mg/m 3 .
中国专利公开了一种基于声波团聚适用于转炉煤气除尘超低排的装置，该装置包括支架，支架上设置有筒体，筒体上设置有煤气入口管以及若干组声波团聚装置，声波团聚装置上方的筒体内依次设置有水雾除尘喷嘴、脱水除尘器以及冲洗喷嘴，筒体顶部设置有煤气出口管，煤气入口管将烟气导入筒体内部，进入筒体后至自下而上经过声波团聚、水雾除尘和脱水除尘环节，后进入除尘***管道。上述专利虽然可以除尘，但单纯使用的声波团聚装置声波频率为单频，无法适应复杂工况、水雾除尘喷嘴粒径较大、脱水除尘器以及冲洗喷嘴无法去除烟尘内的细微颗粒物，尤其是PM2.5等超细颗粒物。The Chinese patent discloses a device suitable for ultra-low discharge of converter gas dust removal based on sonic agglomeration. The device includes a bracket, a cylinder is arranged on the bracket, a gas inlet pipe and several sets of sonic agglomeration devices are arranged on the stent, and the sonic agglomeration device The upper cylinder is provided with water mist dust removal nozzles, dehydration dust collectors and flushing nozzles in sequence. The top of the cylinder is provided with a gas outlet pipe. The gas inlet pipe guides the flue gas into the cylinder and enters the cylinder to pass through the sound wave from bottom to top. Reunion, water mist dust removal and dehydration dust removal, and then enter the dust removal system pipeline. Although the above-mentioned patents can remove dust, the sonic frequency of the sonic agglomeration device used only is single frequency, which cannot adapt to complex working conditions, the water mist dust removal nozzle has a large particle size, the dehydration dust collector and the flushing nozzle cannot remove the fine particles in the dust, especially Ultrafine particles such as PM2.5.
发明内容Summary of the invention
针对现有技术中存在的不足，本发明提供了一种转炉一次烟气复合声波除尘装置，利用单频、窄带等复合声波的团聚除尘设备解决转炉煤气高尘排放的问题。In view of the deficiencies in the prior art, the present invention provides a converter primary flue gas composite sonic dust removal device, which uses single-frequency, narrowband and other composite sonic agglomeration dust removal equipment to solve the problem of high dust emission of converter gas.
本发明是通过以下技术手段实现上述技术目的的。The present invention achieves the above-mentioned technical objects through the following technical means.
一种转炉一次烟气声波团聚除尘装置，包括壳体，壳体的一端设置进口，另一端设置出口，所述壳体内沿流向依次设有声波除垢除尘模块和至少一级声波团聚除尘模块；所述声波除垢除尘模块包括声波除垢模块和旋流除尘模块，所述进口处设有声波除垢模块，用于声波除垢；所述声波团聚除尘模块包括旋流除尘模块和声波团聚模块。A converter primary flue gas sonic agglomeration and dust removal device, comprising a shell, one end of the shell is provided with an inlet, and the other end is provided with an outlet, the shell is provided with a sonic descaling and dust removal module and at least a first-level sonic agglomeration and dust removal module in sequence along the flow direction; The sonic descaling and dust removal module includes a sonic descaling module and a swirling dust removal module, and the inlet is provided with a sonic descaling module for sonic descaling; the sonic agglomeration dust removal module includes a swirling dust removal module and a sonic agglomeration module.
进一步，所述声波除垢模块包括声波发生器连接的号筒，所述声波发生器用于产生除垢 用声波。Further, the sound wave descaling module includes a horn connected to a sound wave generator, and the sound wave generator is used to generate sound waves for descaling.
进一步，所述旋流除尘模块包括冲洗组件和除尘组件，所述冲洗组件围绕在除尘组件的迎风面和侧面。Further, the cyclone dust removal module includes a washing assembly and a dust removal assembly, and the washing assembly surrounds the windward and side surfaces of the dust removal assembly.
进一步，所述除尘组件底部设有排水口。Further, the bottom of the dust removal assembly is provided with a drainage port.
进一步，所述冲洗组件包括带有冲洗喷嘴的清洗设备，其中冲洗喷嘴正对除尘组件的迎风面和侧面设置，所述除尘组件为旋流除尘器。Further, the flushing assembly includes a cleaning device with flushing nozzles, wherein the flushing nozzles are arranged facing the windward and side surfaces of the dust removal assembly, and the dust removal assembly is a cyclone dust collector.
进一步，所述声波团聚模块包括种子颗粒发生组件和声波团聚装置，所述种子颗粒发生组件包括雾化发生设备，所述雾化发生设备用于使壳体内部形成雾化发生区域；所述声波团聚装置用于在雾化发生区域内产生声波。Further, the acoustic wave agglomeration module includes a seed particle generating component and a sonic wave agglomeration device, the seed particle generating component includes an atomization generating device, and the atomizing generating device is used to form an atomization generating area inside the housing; the sonic wave The agglomeration device is used to generate sound waves in the area where the atomization occurs.
进一步，所述声波团聚装置包括可调频声波发声器、定频声波发声器和号筒，所述可调频声波发声器的声波输出端安装在号筒端部，所述定频声波发声器的声波输出端通过筒体安装在号筒侧面。Further, the sound wave agglomeration device includes an adjustable frequency sound wave sounder, a fixed frequency sound wave sounder and a horn, the sound wave output end of the adjustable frequency sound wave sounder is installed at the end of the horn, and the sound wave output end of the fixed frequency sound wave sounder Installed on the side of the horn through the barrel.
进一步，还包括控制***和传感器，所述传感器用于检测声波团聚模块输入端内的烟尘中粒径大小和含量；所述控制***根据传感器检测值调整所述声波团聚模块发出的声波频率和声强。Further, it also includes a control system and a sensor for detecting the size and content of the smoke and dust in the input end of the sound wave agglomeration module; the control system adjusts the frequency and sound of the sound wave emitted by the sound wave agglomeration module according to the sensor detection value. powerful.
进一步，所述控制***获取烟尘中含量最多的2种颗粒i和颗粒j的粒径和含量，设颗粒i粒径为d i，颗粒i的体积含量为v i，颗粒i粒径为d j，颗粒i的体积含量为v j，且d j>d i； Further, the control system obtains the most abundant dust particles sizes and particle content of the particles i and j, the set of particle diameter D i i, i is the particle volume content V i, for the particle diameter D i j , The volume content of particle i is v j , and d j >d i ;
所述控制***根据下面公式确定声波团聚模块发出的声波频率和声强：The control system determines the sound wave frequency and sound intensity emitted by the sound wave agglomeration module according to the following formula:
Figure PCTCN2021070586-appb-000001
Figure PCTCN2021070586-appb-000001
式中：Where:
η为团聚效率，％；η is the reunion efficiency, %;
α为修正系数；α is the correction factor;
p为声波团聚模块发出的声压，Pa；p is the sound pressure emitted by the acoustic reunion module, Pa;
f为声波团聚模块发出的声波频率，Hz；f is the frequency of the sound wave emitted by the sound wave agglomeration module, Hz;
d i为颗粒i粒径，μm； d i is the particle size of particle i, μm;
d j为颗粒j粒径，μm； d j is the particle size of particle j, μm;
v i为颗粒i的体积含量，％； v i is the volume content of particle i, %;
v j为颗粒j的体积含量，％。 v j is the volume content of particle j, %.
进一步，所述壳体内沿流向依次设有声波除垢模块、一级声波团聚除尘模块和二级声波 团聚除尘模块；所述一级声波团聚除尘模块包括一级旋流除尘模块和一级声波团聚模块；所述二级声波团聚除尘模块包括二级旋流除尘模块和二级声波团聚模块；第一传感器用于检测一级声波团聚模块输入端内的烟尘中粒径大小和含量；所述控制***根据第一传感器检测值调整所述一级声波团聚模块发出的声波频率和声强；第二传感器用于检测二级声波团聚模块输入端内的烟尘中粒径大小和含量；所述控制***根据第二传感器检测值调整所述二级声波团聚模块发出的声波频率和声强。Further, a sonic descaling module, a first-stage sonic agglomeration dust removal module, and a second-stage sonic agglomeration dust removal module are sequentially arranged in the casing along the flow direction; the first-stage sonic agglomeration dust removal module includes a first-stage swirling dust removal module and a first-stage sonic agglomeration module The second-level acoustic agglomeration dust removal module includes a second-level cyclone dust removal module and a second-level acoustic agglomeration module; the first sensor is used to detect the particle size and content of the dust in the input end of the first-level acoustic agglomeration module; the control system Adjust the frequency and sound intensity of the sound wave emitted by the first-level acoustic wave agglomeration module according to the detection value of the first sensor; the second sensor is used to detect the size and content of the smoke and dust in the input end of the second-level acoustic wave agglomeration module; the control system is based on The detection value of the second sensor adjusts the sound wave frequency and sound intensity emitted by the second-level sound wave agglomeration module.
进一步，当所述第一传感器检测出一级声波团聚模块输入端内的烟尘中PM>2.5的颗粒含量＞80％且含尘量小于50mg时，所述控制***控制所述一级声波团聚模块发出的声波频率为500～1000Hz和声强＞150dB；当所述第二传感器检测出二级声波团聚模块输入端内的烟尘中PM>2.5的颗粒含量＜10％且含尘量小于20mg时，所述控制***控制所述二级声波团聚模块发出的声波频率为1000～2000Hz和声强＞155dB。Further, when the first sensor detects that the particulate content of PM>2.5 in the smoke and dust in the input end of the first-level acoustic wave agglomeration module is greater than 80% and the dust content is less than 50 mg, the control system controls the first-level acoustic wave agglomeration module The frequency of the emitted sound wave is 500-1000 Hz and the sound intensity is> 150dB; when the second sensor detects that the particulate content of PM>2.5 in the smoke and dust in the input end of the secondary acoustic wave agglomeration module is <10% and the dust content is less than 20mg, The control system controls the frequency of the sound waves emitted by the second-level sound wave agglomeration module to be 1000-2000 Hz and sound intensity> 155 dB.
进一步，还包括冷凝旋流收水设备，所述冷凝旋流收水设备与出口连接，用于去除烟气中的水份。Further, it also includes a condensing swirling water collection device, which is connected to the outlet and used for removing moisture in the flue gas.
进一步，所述冷凝旋流收水设备包括设备本体，所述设备本体内部设有若干旋流收水组件，用于通过旋流引导烟气；所述设备本体一端设有冷凝烟气进口，另一端设置冷凝烟气出口，用于在旋流收水组件外部冷凝。Further, the condensing swirling water collection equipment includes an equipment body, and a number of swirling water collection components are arranged inside the equipment body for guiding the flue gas through the swirling flow; one end of the equipment body is provided with a condensed flue gas inlet, and the other One end is provided with a condensing flue gas outlet for condensing outside the swirling water collection assembly.
进一步，所述旋流收水组件为旋流脱水器，若干所述旋流脱水器阵列排布在设备本体内部。Further, the cyclone water collection component is a cyclone dehydrator, and a plurality of the cyclone dehydrator arrays are arranged inside the equipment body.
一种所述的转炉一次烟气声波团聚除尘装置在转炉烟气除尘中的应用。An application of the converter primary flue gas sonic agglomeration dust removal device in converter flue gas dust removal.
本发明的有益效果在于：The beneficial effects of the present invention are:
1.本发明所述的转炉一次烟气声波团聚除尘装置，通过声波除垢模块用于声波除垢，通过至少一级声波团聚除尘模块逐级处理烟气中的颗粒，最终实现处理后的烟气，含尘量≤10mg/m 3，可以满足超低排放的要求。 1. The converter primary flue gas sonic agglomeration dust removal device of the present invention is used for sonic descaling through the sonic descaling module, and the particles in the flue gas are processed step by step through at least one level of sonic agglomeration dust removal module, and finally the treated smoke is realized Gas, dust content ≤10mg/m 3 , which can meet the requirements of ultra-low emission.
2.本发明所述的转炉一次烟气声波团聚除尘装置，通过声波除垢模块中的旋流除尘模块利用旋流的形式将烟气内携带的大粒径颗粒(粒径＞10μm)脱除。2. The converter primary flue gas sonic agglomeration dust removal device of the present invention uses the swirling dust removal module in the sonic descaling module to remove large-diameter particles (particle size> 10μm) carried in the flue gas in the form of swirling flow .
3.本发明所述的转炉一次烟气声波团聚除尘装置，通过声波团聚模块利用种子颗粒发生组件发出的种子颗粒为团聚核，在声波的作用下，烟气中的小粒径颗粒(粒径≤10μm)团聚成大粒径颗粒(粒径＞10μm)，并经声波团聚除尘模块中的旋流除尘模块旋流脱除。3. In the converter primary flue gas sonic agglomeration and dust removal device of the present invention, the seed particles emitted by the seed particle generation component through the sonic agglomeration module are used as agglomeration nuclei. Under the action of sound waves, the small-diameter particles (particle size) in the flue gas ≤10μm) agglomerate into large-diameter particles (particle size> 10μm), and the cyclone dust removal module in the sonic agglomeration dust removal module swirls to remove.
4.本发明所述的转炉一次烟气声波团聚除尘装置，通过控制***和传感器，实现自适应控制。4. The converter primary flue gas sonic agglomeration dust removal device of the present invention realizes adaptive control through a control system and sensors.
5.本发明所述的转炉一次烟气声波团聚除尘装置，通过冷凝旋流收水设备去除烟气中的 水份，所述冷凝旋流收水设备内部设有若干旋流收水组件，通过旋流引导烟气，而旋流收水组件外部实现冷凝。5. In the converter primary flue gas sonic agglomeration dust removal device of the present invention, the moisture in the flue gas is removed by a condensing swirling water collection device. The condensing swirling water collection device is provided with a number of swirling water collection components. The swirling flow guides the flue gas, and the outside of the swirling water collection component realizes condensation.
附图说明Description of the drawings
图1为实施例1提供的转炉一次烟气声波除尘装置示意图。Figure 1 is a schematic diagram of a converter primary flue gas sonic dust removal device provided in Example 1.
图2为实施例1中声波团聚组件结构示意图。2 is a schematic diagram of the structure of the acoustic wave agglomeration component in Example 1.
图3为实施例2提供的转炉一次烟气声波除尘装置示意图。Fig. 3 is a schematic diagram of a converter primary flue gas sonic dust removal device provided in embodiment 2.
图4为实施例2的冷凝旋流收水设备示意图。4 is a schematic diagram of the condensing cyclone water collection equipment of embodiment 2.
图5为实施例3中转炉一次烟气声波除尘装置在钢厂转炉烟气除尘的布置方案示意图。Fig. 5 is a schematic diagram of the arrangement scheme of the primary flue gas sonic dust removal device of the converter in Example 3 in the converter flue gas dust removal of the steel plant.
图6为本发明所述的旋流收水组件三维图。Figure 6 is a three-dimensional view of the swirling water collection assembly of the present invention.
图中：In the picture:
1-壳体；11-进口；12-出口；13-第一排水口；14-第二排水口；15-第三排水口；2-声波除垢模块；21-为声波发生器；22-号筒；3–旋流除尘模块；31-第一冲洗组件；32-第一除尘组件；4-一级声波团聚除尘模块；41-一级种子颗粒发生组件；42-一级声波团聚装置；43-第二冲洗组件；44-第二除尘组件；421-可调频声波发声器；422-定频声波发声器；423-号筒；5-二级声波团聚除尘模块；51-二级种子颗粒发生组件；52-二级声波团聚装置；53-第三冲洗组件；54-第三除尘组件；6-转炉；7-烟罩；8-汽化冷却烟道；9-一文洗涤塔；10-环缝二文塔；11-脱水器；12-转炉一次烟气声波团聚除尘装置；13-风机；14-放散塔；15-水封；16-煤气柜；17-冷凝旋流收水设备；17-1-旋流收水组件；17-2-冷凝烟气进口组件；17-3-冷凝烟气出口组件、17-4-冷却水进口组件；17-5-冷却水出口组件；18-控制***；181-第一传感器；182-第二传感器。1-shell; 11-inlet; 12-outlet; 13-first drain; 14-second drain; 15-third drain; 2-sonic descaling module; 21-sonic generator; 22- Horn; 3—Swirl flow dust removal module; 31—First flushing component; 32—First dust removal component; 4-First-grade sonic agglomeration dust removal module; 41-First-grade seed particle generation component; 42-First-grade sonic agglomeration device; 43 -Second flushing component; 44-Second dust removal component; 421-Adjustable frequency sound wave generator; 422-Fixed frequency sound wave generator; 423-Horn; 5-Secondary sonic agglomeration dust removal module; 51-Secondary seed particle generation component ; 52-Secondary sonic agglomeration device; 53-Third flushing component; 54-Third dust removal component; 6-Converter; 7-Smoke hood; 8-Vaporization cooling flue; 9-Washing tower; 10-Girth seam two Venta; 11- dehydrator; 12- converter primary flue gas sonic agglomeration dust removal device; 13- fan; 14- emission tower; 15- water seal; 16- gas tank; 17- condensing swirling water collection equipment; 17-1 -Swirl water collection component; 17-2- Condensation flue gas inlet component; 17-3- Condensate flue gas outlet component, 17-4- Cooling water inlet component; 17-5- Cooling water outlet component; 18- Control system; 181-first sensor; 182-second sensor.
具体实施方式Detailed ways
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“轴向”、“径向”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特 征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "axial", The orientation or positional relationship indicated by "radial", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description , Rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more than two, unless otherwise specifically defined.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.
实施例1Example 1
如图1所示，本发明所述的转炉一次烟气声波团聚除尘装置，包括壳体1，壳体1的一端设置进口11，另一端设置出口12，所述壳体1内沿流向依次设有声波除垢除尘模块、一级声波团聚除尘模块4和二级声波团聚除尘模块5；所述声波除垢除尘模块包括声波除垢模块2和旋流除尘模块3，所述进口11处设有声波除垢模块2，用于声波除垢；所述一级声波团聚除尘模块4包括一级旋流除尘模块和一级声波团聚模块；所述二级声波团聚除尘模块5包括二级旋流除尘模块和二级声波团聚模块。As shown in Figure 1, the converter primary flue gas sonic agglomeration and dust removal device of the present invention includes a housing 1. One end of the housing 1 is provided with an inlet 11, and the other end is provided with an outlet 12. There are sonic descaling and dust removal modules, primary sonic agglomeration dust removal module 4 and second sonic agglomeration dust removal module 5; the sonic descaling and dust removal module includes sonic descaling module 2 and swirling dust removal module 3, the inlet 11 is equipped with sonic dust removal module The fouling module 2 is used for sonic descaling; the first-level sonic agglomeration dust removal module 4 includes a first-level swirling dust removal module and a first-level sonic agglomeration module; the second sonic agglomeration dust removal module 5 includes a second-level swirling dust removal module and Second-level acoustic reunion module.
本实施例中，所述声波除垢模块2包括声波发生器21连接的号筒22，号筒202朝向壳体1内部，所述声波发生器21用于产生除垢用声波。旋流除尘模块3包括第一冲洗组件31和第一除尘组件32，所述第一冲洗组件31正对第一除尘组件32的迎风面和正上面设置，所述第一冲洗组件31包括水泵连接的冲洗喷嘴，其中所述冲洗喷嘴正对第一除尘组件32的迎风面和正上面设置，所述第一除尘组件32为旋流除尘器。所述第一除尘组件32底部的壳体上设有第一排水口13。In this embodiment, the sound wave descaling module 2 includes a horn 22 connected to a sound wave generator 21, the horn 202 faces the inside of the housing 1, and the sound wave generator 21 is used to generate sound waves for descaling. The cyclone dust removal module 3 includes a first washing assembly 31 and a first dust removal assembly 32. The first washing assembly 31 is arranged directly opposite to the windward surface and directly above the first dust removal assembly 32. The first washing assembly 31 includes a water pump connected The flushing nozzle, wherein the flushing nozzle is arranged directly on the windward surface and directly above the first dust removal assembly 32, and the first dust removal assembly 32 is a cyclone dust collector. The housing at the bottom of the first dust removal assembly 32 is provided with a first drainage port 13.
本实施例中，所述一级声波团聚模块包括一级种子颗粒发生组件41和一级声波团聚装置42，其中一级种子颗粒发生组件41包括高压水泵连接的微量雾化喷嘴，所述雾化发生设备的雾化喷嘴出口端设置于壳体1内部形成雾化发生区域，所述一级声波团聚装置42设置于壳体1上，所述一级声波团聚装置42的声波输出端正对于所述雾化发生区域。所述一级旋流除尘模块包括第二冲洗组件43和第二除尘组件44，所述第二冲洗组件43正对第二除尘组件44的迎风面和正上面设置，所述第二冲洗组件43包括水泵连接的冲洗喷嘴，其中所述冲洗喷嘴正对第二除尘组件44的迎风面和正上面设置，所述第二除尘组件44为旋流除尘器。所述第二除尘组件44底部的壳体上设有第二排水口14。In this embodiment, the first-level sonic agglomeration module includes a first-level seed particle generation assembly 41 and a first-level sonic agglomeration device 42, wherein the first-level seed particle generation assembly 41 includes a micro-atomization nozzle connected to a high-pressure water pump. The outlet end of the atomization nozzle of the generating device is arranged inside the housing 1 to form an atomization generating area, the first-stage acoustic wave agglomeration device 42 is arranged on the housing 1, and the acoustic wave output end of the first-stage acoustic wave agglomeration device 42 is facing the Area where fogging occurs. The one-stage cyclone dust removal module includes a second flushing assembly 43 and a second dust removal assembly 44, the second flushing assembly 43 is arranged facing the windward surface and directly above the second dust removal assembly 44, and the second flushing assembly 43 includes The flushing nozzle connected to the water pump, wherein the flushing nozzle is arranged directly on the windward surface and directly above the second dust removal assembly 44, and the second dust removal assembly 44 is a cyclone dust collector. The housing at the bottom of the second dust removal assembly 44 is provided with a second drain port 14.
本实施例中，所述二级声波团聚模块包括二级种子颗粒发生组件51和二级声波团聚装置52，其中二级种子颗粒发生组件51包括高压水泵连接的微量雾化喷嘴，所述雾化发生设备的雾化喷嘴出口端设置于壳体1内部形成雾化发生区域，所述二级声波团聚装置52设置于壳体 1上，所述二级声波团聚装置52的声波输出端正对于所述雾化发生区域。所述二级旋流除尘模块包括第二冲洗组件53和第二除尘组件54，所述第二冲洗组件53正对第二除尘组件54的迎风面和正上面设置，所述第二冲洗组件53包括水泵连接的冲洗喷嘴，其中所述冲洗喷嘴正对第二除尘组件54的迎风面和正上面设置，所述第二除尘组件54为旋流除尘器。所述第二除尘组件54底部的壳体上设有第三排水口15。In this embodiment, the secondary acoustic wave agglomeration module includes a secondary seed particle generation assembly 51 and a secondary acoustic wave agglomeration device 52, wherein the secondary seed particle generation assembly 51 includes a micro atomization nozzle connected to a high-pressure water pump. The outlet end of the atomization nozzle of the generating device is arranged inside the housing 1 to form an atomization generating area, the secondary acoustic wave agglomeration device 52 is arranged on the housing 1, and the sound wave output end of the secondary acoustic wave agglomeration device 52 is directly opposite to the Area where fogging occurs. The two-stage cyclone dust removal module includes a second washing assembly 53 and a second dust removal assembly 54. The second washing assembly 53 is arranged facing the windward surface and directly above the second dust removal assembly 54, and the second washing assembly 53 includes The flushing nozzle connected to the water pump, wherein the flushing nozzle is arranged directly on the windward surface and directly above the second dust removal assembly 54, and the second dust removal assembly 54 is a cyclone dust collector. The housing at the bottom of the second dust removal assembly 54 is provided with a third drain 15.
一级声波团聚装置42和二级声波团聚装置52的结构相似，仅仅产生的声波频率或者/声强有差异。如图2所示，以一级声波团聚装置42为例，一级声波团聚装置42包括可调频声波发声器421、定频声波发声器422和号筒423，所述可调频声波发声器421安装在号筒423端部，所述定频声波发声器422通过筒体安装在号筒423侧面，此外筒体也可以是一种号筒。所述可调频声波发声器421不仅能发出1000～2000Hz的声波用于团聚还可以发出40～200Hz除垢用声波；此外，定频声波发声器422的定频声源布置在号筒423内，工作时可以形成正压，可以防止烟气倒流，防止磨损，另一方面布置在号筒423内可以防止烟气的冲刷，防止磨损。The structure of the primary acoustic wave agglomeration device 42 and the secondary acoustic wave agglomeration device 52 are similar, and only the generated acoustic wave frequency or/sound intensity is different. As shown in FIG. 2, taking the first-level sound wave reunion device 42 as an example, the first-level sound wave reunion device 42 includes an adjustable frequency sound wave sound generator 421, a fixed frequency sound wave sound generator 422, and a horn 423. The adjustable frequency sound wave sound generator 421 is installed in At the end of the horn 423, the fixed-frequency sound wave generator 422 is installed on the side of the horn 423 through a barrel. In addition, the barrel may also be a horn. The adjustable frequency sound wave generator 421 can not only emit 1000-2000 Hz sound waves for reunion, but also emit 40-200 Hz descaling sound waves; in addition, the fixed frequency sound source of the fixed frequency sound wave sound generator 422 is arranged in the horn 423 and works At the same time, positive pressure can be formed, which can prevent the flue gas from flowing back and prevent abrasion. On the other hand, the arrangement in the horn 423 can prevent the scour of the flue gas and prevent abrasion.
本实施例提供的转炉一次烟气声波除尘装置除尘过程如下：The dust removal process of the converter primary flue gas sonic dust removal device provided in this embodiment is as follows:
经过转炉一次除尘***处理后的含尘烟气自进口101进入到转炉一次烟气除尘装置，并依次经过声波除垢除尘模块和一级声波团聚除尘模块(可以是一个或多个)。声波除垢除尘模块为粗团聚，通过旋流的形式将烟气内携带的大粒径颗粒(粒径＞10μm)脱除。一级声波团聚模块为声波团聚，以一级种子颗粒发生组件41发出的种子颗粒为团聚核，在声波的作用下，烟气中的小粒径颗粒(粒径≤10μm)团聚成大粒径颗粒(粒径＞10μm)，并经第二除尘组件44旋流脱除。根据烟气烟尘含量的不同，声波团聚除尘模块可布置一个或多个。第一除尘组件32的迎风面及正上面布置有第一冲洗组件31，第二除尘组件44的迎风面及正上面布置有第二冲洗组件43，第二冲洗组件43的冲洗水用于冲洗团聚模块内外壁上附着的液滴及烟尘，保持团聚模块的性能。第一冲洗组件31和第二冲洗组件43产生的冲洗水分别经第一排水口13和第二排水口14流出。经过声波除尘处理后的烟气，从出口12排出。The dust-containing flue gas processed by the converter primary dust removal system enters the converter primary flue gas dust removal device from the inlet 101, and sequentially passes through the sonic descaling and dust removal module and the first-level sonic agglomeration dust removal module (it can be one or more). The sonic descaling and dust removal module is coarse agglomeration, which removes the large-diameter particles (particle size> 10μm) carried in the flue gas in the form of swirling flow. The first-level sonic agglomeration module is sonic agglomeration. The seed particles emitted by the first-level seed particle generation component 41 are used as the agglomeration nucleus. Under the action of sound waves, small particles (particle size ≤ 10μm) in the flue gas agglomerate into large particles Particles (particle size> 10 μm) are removed by the swirling flow of the second dust removal assembly 44. According to the different dust content of the flue gas, one or more sonic agglomeration dust removal modules can be arranged. A first flushing assembly 31 is arranged on the windward surface and directly above the first dust removal assembly 32, and a second flushing assembly 43 is arranged on the windward surface and directly above the second dust removal assembly 44. The flushing water of the second flushing assembly 43 is used to flush the agglomeration. The droplets and smoke attached to the inner and outer walls of the module maintain the performance of the reunion module. The flushing water generated by the first flushing assembly 31 and the second flushing assembly 43 flows out through the first drain port 13 and the second drain port 14 respectively. The flue gas after sonic dust removal is discharged from the outlet 12.
为了实现自适应控制，本发明还包括控制***18和传感器，所述传感器用于检测声波团聚模块输入端内的烟尘中粒径大小和含量；所述控制***18根据传感器检测值调整所述声波团聚模块发出的声波频率和声强。所述控制***18获取烟尘中含量最多的2种颗粒i和颗粒j的粒径和含量，设颗粒i粒径为d i，颗粒i的体积含量为v i，颗粒i粒径为d j，颗粒i的体积含量为v j，且d j>d i； In order to realize adaptive control, the present invention also includes a control system 18 and a sensor, the sensor is used to detect the size and content of the smoke dust in the input end of the acoustic wave agglomeration module; the control system 18 adjusts the acoustic wave according to the sensor detection value The frequency and intensity of the sound waves emitted by the reunion module. The control system 18 acquires the most abundant soot particles sizes and particle content of the particles i and j, the set of particle diameter D i i, i is the particle volume content V i, for the particle diameter D i j, The volume content of particle i is v j , and d j >d i ;
所述控制***18根据下面公式确定声波团聚模块发出的声波频率和声强：The control system 18 determines the sound wave frequency and sound intensity emitted by the sound wave reunion module according to the following formula:
Figure PCTCN2021070586-appb-000002
Figure PCTCN2021070586-appb-000002
式中：Where:
η为团聚效率，％，团聚效率一般大于90％；η is the agglomeration efficiency, %, the agglomeration efficiency is generally greater than 90%;
α为修正系数，一般为0.03，该系数与工况有关；α is the correction coefficient, generally 0.03, which is related to the working conditions;
p为声波团聚模块发出的声压，Pa；p is the sound pressure emitted by the acoustic reunion module, Pa;
f为声波团聚模块发出的声波频率，Hz；f is the frequency of the sound wave emitted by the sound wave agglomeration module, Hz;
d i为颗粒i粒径，μm； d i is the particle size of particle i, μm;
d j为颗粒j粒径，μm； d j is the particle size of particle j, μm;
v i为颗粒i的体积含量，％； v i is the volume content of particle i, %;
v j为颗粒j的体积含量，％。 v j is the volume content of particle j, %.
例如：颗粒i粒径2.5μm；体积含量20％；颗粒j粒径10μm；体积含量80％；在声波团聚模块发出的声波频率1000Hz下，团聚效率η达到要＞90％，则声波团聚模块发出的声压p＝1980pa，转换后约160dB。For example: particle i has a particle size of 2.5μm; volume content is 20%; particle j has a particle size of 10μm; volume content is 80%; when the sound wave frequency emitted by the sonic agglomeration module is 1000Hz, the agglomeration efficiency η reaches >90%, then the sonic agglomeration module emits The sound pressure p=1980pa, about 160dB after conversion.
以实施例1补充说明，第一传感器181用于检测一级声波团聚模块输入端内的烟尘中粒径大小和含量，即进入一级种子颗粒发生组件41处的烟尘中粒径大小和含量；所述控制***18根据第一传感器181检测值调整所述一级声波团聚模块发出的声波频率和声强；第二传感器182用于检测二级声波团聚模块输入端内的烟尘中粒径大小和含量，即进入二级种子颗粒发生组件51处的烟尘中粒径大小和含量；所述控制***18根据第二传感器182检测值调整所述二级声波团聚模块发出的声波频率和声强。To supplement with Example 1, the first sensor 181 is used to detect the size and content of the smoke and dust in the input end of the first-level acoustic agglomeration module, that is, the size and content of the smoke and dust that enters the first-level seed particle generation assembly 41; The control system 18 adjusts the frequency and intensity of the sound waves emitted by the first-level acoustic agglomeration module according to the detection value of the first sensor 181; the second sensor 182 is used to detect the size and size of the smoke and dust in the input end of the second-level acoustic agglomeration module The content is the size and content of the smoke and dust entering the secondary seed particle generation component 51; the control system 18 adjusts the frequency and sound intensity of the sound wave emitted by the secondary acoustic wave agglomeration module according to the detection value of the second sensor 182.
控制***18控制声波除垢模块2产生声波频率为40～200Hz和声强为155dB，经过声波除垢模块2后进入一级种子颗粒发生组件41处的烟尘中PM2.5～PM10的颗粒含量为80％、PM＜2.5的颗粒含量为20％，且含尘量小于50mg，所述控制***18根据第一传感器181检测值控制所述一级声波团聚模块发出的声波频率为500～1000Hz和声强150～155dB；经过一级声波团聚除尘模块4后进入二级种子颗粒发生组件51处的烟尘中PM2.5～PM10的颗粒含量为10％、PM＜2.5的颗粒含量为90％，且含尘量小于20mg，所述控制***18根据第二传感器182检测值控制所述二级声波团聚模块发出的声波频率为1000～2000Hz和声强为155～160dB；经过二级声波团聚除尘模块5后由出口12排出，此时出口内烟尘中PM＜2.5的颗粒含量为100％，且含尘量小于10mg。一级声波团聚除尘模块4用于去除PM2.5～PM10，二级声波团聚除尘模块5用于去除PM2.5以下颗粒。The control system 18 controls the sonic descaling module 2 to produce a sound wave with a frequency of 40-200 Hz and a sound intensity of 155dB. After passing through the sonic descaling module 2, the particulate content of PM2.5 to PM10 in the dust entering the first-level seed particle generation component 41 is 80%, the particle content of PM<2.5 is 20%, and the dust content is less than 50mg, the control system 18 controls the sound wave frequency of the first-level acoustic agglomeration module to 500～1000Hz according to the detection value of the first sensor 181 Strong 150～155dB; after passing through the first-level acoustic agglomeration dust removal module 4, the smoke and dust entering the second-level seed particle generation assembly 51 contains 10% PM2.5～PM10 particles, and 90% of PM<2.5 particles. If the amount of dust is less than 20mg, the control system 18 controls the frequency of the sound waves emitted by the second-level sonic agglomeration module to 1000-2000 Hz and the sound intensity to 155-160 dB according to the detection value of the second sensor 182; after the second-level sonic agglomeration dust removal module 5 It is discharged from the outlet 12. At this time, the content of particles with PM<2.5 in the smoke and dust in the outlet is 100%, and the dust content is less than 10mg. The first-level acoustic agglomeration dust removal module 4 is used to remove PM2.5 to PM10, and the second-level acoustic agglomeration dust removal module 5 is used to remove particles below PM2.5.
实施例2Example 2
如图3所示，所述声波团聚除尘设备1的出口102连接的冷凝旋流收水设备17。如图4所示，冷凝旋流收水设备17包括设备本体，所述设备本体内部设有若干旋流收水组件17-1，用于通过旋流引导烟气；设备本体一端设置冷凝烟气进口组件17-2，另一端设置冷凝烟气出口组件17-3，用于在旋流收水组件17-1外部冷凝。所述旋流收水组件17-1为旋流脱水器，在实际实施的其他实施例中，可以为金属材质的旋流脱水器及安装座的组合，所述旋流脱水器在安装座上呈阵列排布。如图6所述，旋流收水组件17-1为筒体内安装螺旋导流片，筒体外部与冷却介质接触，实现筒体内部导流。筒体外部冷凝。As shown in FIG. 3, the outlet 102 of the acoustic agglomeration dust removal device 1 is connected to a condensing swirling water collection device 17. As shown in Figure 4, the condensing swirling water collection equipment 17 includes an equipment body, and a number of swirling water collection components 17-1 are arranged inside the equipment body for guiding the flue gas through the swirling flow; one end of the equipment body is provided with condensing flue gas The inlet assembly 17-2 is provided with a condensed flue gas outlet assembly 17-3 at the other end for condensing outside the swirling water collection assembly 17-1. The cyclone water collection assembly 17-1 is a cyclone dehydrator. In other embodiments in actual implementation, it may be a combination of a metal cyclone dehydrator and a mounting seat, and the cyclone dehydrator is on the mounting seat. Arranged in an array. As shown in Fig. 6, the swirling water collection assembly 17-1 is a cylinder body with spiral guide vanes installed, and the outside of the cylinder body is in contact with the cooling medium to realize the flow diversion inside the cylinder body. Condensation on the outside of the cylinder.
以上装置在使用过程中，声波团聚除尘设备、冷凝旋流收水设备17按照烟气流动的方向顺次布置在烟气管路上。During the use of the above devices, the acoustic wave agglomeration dust removal equipment and the condensing swirl water collection equipment 17 are sequentially arranged on the flue gas pipeline according to the flow direction of the flue gas.
以上装置的工作原理和工作过程如下：The working principle and working process of the above devices are as follows:
含有烟尘的高温烧结混合机烟气从设备入口进入到声波团聚除尘设备，并依次经过声波除垢除尘模块、一级声波团聚除尘模块(可以是一个或多个)。声波除垢除尘模块为粗团聚，通过旋流的形式将烟气内携带的大粒径液滴脱除。一级声波团聚模块为声波团聚，以一级种子颗粒发生组件41发出的种子颗粒为团聚核，在声波的作用下，烟气中的小颗粒团聚成大颗粒，并经第二除尘组件44旋流脱除。根据烟气烟尘含量的不同，声波团聚除尘模块可布置一个或多个。第一除尘组件32的迎风面及正上面布置有第一冲洗组件31，第二除尘组件44的迎风面及正上面布置有第二冲洗组件43，第二冲洗组件43的冲洗水用于冲洗团聚模块内外壁上附着的液滴及烟尘，保持团聚模块的性能。第一冲洗组件31和第二冲洗组件43产生的冲洗水分别经第一排水口13和第二排水口14流出。经过声波除尘处理后的烟气，含尘量≤12mg/m 3。除尘后的烟气自设备出口12流出，从冷凝烟气进口组件17-2进入，到达冷凝旋流收水设备17内部，途径旋流收水组件17-1后从冷凝烟气出口组件17-3流出。所述旋流收水组件17-1内部设有螺旋导流板，用于增加换热面积和引导烟气。冷却水从冷却水进口组件17-4流入、冷却水出口组件17-5流出，并与旋流收水组件17-1中的烟气换热，烟气中包含的水份经过降温及旋流脱除后脱除。 The flue gas of the high-temperature sintering mixer containing soot enters the sonic agglomeration dust removal equipment from the equipment entrance, and sequentially passes through the sonic descaling and dust removal module, and the first-level sonic agglomeration dust removal module (can be one or more). The acoustic wave descaling and dust removal module is coarse agglomeration, which removes the large-size droplets carried in the flue gas in the form of swirling flow. The first-level sonic agglomeration module is sonic agglomeration. The seed particles emitted by the first-level seed particle generation component 41 are used as the agglomeration nucleus. Under the action of sound waves, the small particles in the flue gas agglomerate into large particles, which are rotated by the second dust removal component 44. Flow off. According to the different content of smoke and dust in the flue gas, one or more sonic agglomeration dust removal modules can be arranged. A first flushing assembly 31 is arranged on the windward surface and directly above the first dust removal assembly 32, and a second flushing assembly 43 is arranged on the windward surface and directly above the second dust removal assembly 44. The flushing water of the second flushing assembly 43 is used to flush the agglomeration. The droplets and smoke attached to the inner and outer walls of the module maintain the performance of the reunion module. The flushing water generated by the first flushing assembly 31 and the second flushing assembly 43 flows out through the first drain port 13 and the second drain port 14 respectively. The flue gas after sonic dust removal treatment has a dust content of ≤12mg/m 3 . The flue gas after dust removal flows out from the equipment outlet 12, enters from the condensing flue gas inlet assembly 17-2, and reaches the inside of the condensing swirling water collection device 17, passing through the swirling water collection assembly 17-1 and then from the condensing flue gas outlet assembly 17- 3 Outflow. A spiral baffle is provided inside the swirling water collection assembly 17-1, which is used to increase the heat exchange area and guide the flue gas. The cooling water flows in from the cooling water inlet assembly 17-4 and flows out from the cooling water outlet assembly 17-5, and exchanges heat with the flue gas in the swirling water collection assembly 17-1. The moisture contained in the flue gas is cooled and swirled Remove after removal.
实施例3Example 3
如图5所示，为本发明一种转炉一次烟气声波除尘装置在某钢铁企业1#转炉烟气的除尘布置方案，其中，烟罩7安装在转炉6上方，风机13的负压将转炉6运行产生的高温、高尘烟气吸入到汽化冷却烟道8，高温、高尘烟气在其中冷却后依次进入到一文洗涤塔9、环缝二文塔10、脱水器11，高温、高尘烟气变成温度55-70℃的含尘烟气。烟气随后进入到本发明提供的转炉一次烟气声波团聚除尘装置12，经除尘后的烟气CO含量高的穿过水封15进 入到煤气柜16，CO含量低的从放散塔14点火放散燃烧排入空气。As shown in Fig. 5, it is the dedusting arrangement scheme of a converter primary flue gas sonic dust removal device in a certain iron and steel enterprise 1# converter flue gas. Among them, the fume hood 7 is installed above the converter 6, and the negative pressure of the fan 13 reduces the converter flue gas. 6 The high-temperature and high-dust flue gas produced by the operation is sucked into the vaporization cooling flue 8. The high-temperature and high-dust flue gas is cooled in it and then enters the one-wen washing tower 9, the ring-seam two-wen tower 10, and the dehydrator 11. The dust fume becomes a dusty fume with a temperature of 55-70°C. The flue gas then enters the converter primary flue gas sonic agglomeration dust removal device 12 provided by the present invention. After dust removal, the flue gas with high CO content passes through the water seal 15 and enters the gas cabinet 16, and the low CO content is ignited and released from the emission tower 14 Burn into the air.
本实施例中，壳体中间呈圆筒形，两端呈圆台状；进口、出口呈法兰状，并与烟气管道法兰连接。声波除垢模块的声波发生器和号筒通过法兰连接，号筒焊接于壳体靠近进口圆台的斜面上。声波团聚装置中的可调频声波发声器与号筒法兰连接，号筒焊接安装在壳体管壁上；声波团聚装置数量可以是一个或多个。如果声波团聚装置有多个，则按顺序焊接于壳体内。In this embodiment, the middle of the shell is cylindrical, and the two ends are truncated cones; the inlet and the outlet are flange-shaped, and they are flanged to the flue gas pipeline. The sonic generator and the horn of the sonic descaling module are connected by a flange, and the horn is welded to the inclined surface of the shell close to the inlet round table. The adjustable frequency sound wave generator in the sound wave reunion device is connected with the horn flange, and the horn is welded and installed on the shell pipe wall; the number of the sound wave reunion device can be one or more. If there are multiple sonic agglomeration devices, they are welded in the shell in order.
本实施例中声波团聚除尘模块声源频率可以包括定频1000Hz、扫频500Hz～2000Hz、窄带630Hz～800Hz，声压级150dB～160dB。In this embodiment, the sound source frequency of the sound wave agglomeration dust removal module may include a fixed frequency of 1000 Hz, a sweep frequency of 500 Hz to 2000 Hz, a narrow band of 630 Hz to 800 Hz, and a sound pressure level of 150 dB to 160 dB.
本实施例中种子颗粒发生组件形成的水雾颗粒物粒径可以达到20μm。In this embodiment, the particle size of the water mist particles formed by the seed particle generating assembly can reach 20 μm.
本实施例中旋流除尘模块3内的颗粒物被切割成粒径为10μm，一级声波团聚除尘模块4内的第二冲洗组件43或二级声波团聚除尘模块5内的第三冲洗组件53内的颗粒物被切割成粒径为1μm。In this embodiment, the particulate matter in the cyclone dust removal module 3 is cut into a particle size of 10 μm, and the second flushing assembly 43 in the first-level sonic agglomeration dust removal module 4 or the third flushing assembly 53 in the second-level sonic agglomeration dust removal module 5 The particles are cut into a particle size of 1μm.
经过本实施例提供的一种转炉一次烟气声波除尘装置处理后的烟气，含尘量≤10mg/m 3，可以满足超低排放的要求。 The flue gas processed by a converter primary flue gas sonic dust removal device provided in this embodiment has a dust content of ≤10 mg/m 3 , which can meet the requirements of ultra-low emission.
应当理解，虽然本说明书是按照各个实施例描述的，但并非每个实施例仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。It should be understood that although this specification is described in accordance with various embodiments, not each embodiment only contains an independent technical solution. This narration in the specification is only for clarity, and those skilled in the art should regard the specification as a whole The technical solutions in the various embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施例的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施例或变更均应包含在本发明的保护范围之内。The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention, and any equivalent embodiments or embodiments made without departing from the technical spirit of the present invention All changes shall be included in the protection scope of the present invention.

Claims (15)

  1. 一种转炉一次烟气声波团聚除尘装置，其特征在于，包括壳体(1)，壳体(1)的一端设置进口(11)，另一端设置出口(12)，所述壳体(1)内沿流向依次设有声波除尘除垢模块和至少一级声波团聚除尘模块；所述声波除垢除尘模块包括声波除垢模块(2)和旋流除尘模块，所述进口(11)处设有声波除垢模块(2)，用于声波除垢；所述声波团聚除尘模块包括旋流除尘模块和声波团聚模块。A converter primary flue gas sonic agglomeration dust removal device is characterized in that it comprises a shell (1), one end of the shell (1) is provided with an inlet (11), and the other end is provided with an outlet (12), and the shell (1) The inner flow direction is provided with a sonic dust removal and descaling module and at least a first-level sonic agglomeration dust removal module; the sonic descaling and dust removal module includes a sonic descaling module (2) and a swirling dust removal module, and the inlet (11) is provided with a sound The wave descaling module (2) is used for sound wave descaling; the sound wave agglomeration dust removal module includes a swirling flow dust removal module and a sound wave agglomeration module.
  2. 根据权利要求1所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述声波除垢模块(2)包括声波发生器(21)连接的号筒(22)，所述声波发生器(21)用于产生除垢用声波。The converter primary flue gas sonic agglomeration dust removal device according to claim 1, characterized in that the sonic descaling module (2) comprises a horn (22) connected to a sonic generator (21), and the sonic generator (21) ) Used to generate sound waves for descaling.
  3. 根据权利要求1所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述旋流除尘模块包括冲洗组件(31、43、53)和除尘组件(32、44、54)，所述冲洗组件(31、43、53)围绕在除尘组件(32、44、54)的迎风面和侧面。The converter primary flue gas sonic agglomeration dust removal device according to claim 1, characterized in that the cyclone dust removal module includes a washing assembly (31, 43, 53) and a dust removal assembly (32, 44, 54), the washing The components (31, 43, 53) surround the windward and side surfaces of the dust removal components (32, 44, 54).
  4. 根据权利要求3所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述除尘组件(32、44、54)底部设有排水口(13、14、15)。The converter primary flue gas sonic agglomeration dust removal device according to claim 3, characterized in that the bottom of the dust removal assembly (32, 44, 54) is provided with drainage ports (13, 14, 15).
  5. 根据权利要求3所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述冲洗组件(31、43、53)包括带有冲洗喷嘴的清洗设备，其中冲洗喷嘴正对除尘组件(32、44、54)的迎风面和侧面设置，所述除尘组件(32、44、54)为旋流除尘器。The converter primary flue gas sonic agglomeration dust removal device according to claim 3, characterized in that the flushing assembly (31, 43, 53) comprises a cleaning equipment with flushing nozzles, wherein the flushing nozzles are facing the dust removing assembly (32, 44, 54) are arranged on the windward and side surfaces, and the dust removal assembly (32, 44, 54) is a cyclone dust collector.
  6. 根据权利要求1所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述声波团聚模块包括种子颗粒发生组件(41、51)和声波团聚装置(42、52)，所述种子颗粒发生组件(41、51)包括雾化发生设备，所述雾化发生设备用于使壳体(1)内部形成雾化发生区域；所述声波团聚装置(42、52)用于在雾化发生区域内产生声波。The converter primary flue gas sonic agglomeration dust removal device according to claim 1, wherein the sonic agglomeration module includes a seed particle generation assembly (41, 51) and a sonic agglomeration device (42, 52), and the seed particle generation The components (41, 51) include an atomization generating device, which is used to form an atomization generating area inside the housing (1); and the acoustic wave agglomeration device (42, 52) is used to form an atomization generating area in the housing (1). Sound waves are generated inside.
  7. 根据权利要求6所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述声波团聚装置(42、52)包括可调频声波发声器(421)、定频声波发声器(422)和号筒(423)，所述可调频声波发声器(421)的声波输出端安装在号筒(423)端部，所述定频声波发声器(422)的声波输出端通过筒体安装在号筒(423)侧面。The converter primary flue gas sonic agglomeration dust removal device according to claim 6, characterized in that the sonic agglomeration device (42, 52) comprises an adjustable frequency sonic sound generator (421), a fixed frequency sonic sound generator (422) and a horn (423), the sound wave output end of the adjustable frequency sound wave sound generator (421) is installed at the end of the horn (423), and the sound wave output end of the fixed frequency sound wave sound generator (422) is installed on the horn (423) through a cylinder. side.
  8. 根据权利要求1-7任一项所述的转炉一次烟气声波团聚除尘装置，其特征在于，还包括控制***(18)和传感器(181、182)，所述传感器用于检测声波团聚模块输入端内的烟尘中粒径大小和含量；所述控制***(18)根据传感器检测值调整所述声波团聚模块发出的声波频率和声强。The converter primary flue gas acoustic reunion dust removal device according to any one of claims 1-7, characterized in that it further comprises a control system (18) and sensors (181, 182), and the sensor is used to detect the input of the acoustic reunion module The particle size and content of the smoke and dust in the end; the control system (18) adjusts the sound wave frequency and sound intensity emitted by the sound wave agglomeration module according to the sensor detection value.
  9. 根据权利要求8所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述控制***(18)获取烟尘中含量最多的2种颗粒i和颗粒j的粒径和含量，设颗粒i粒径为d i，颗粒i的体积含量为v i，颗粒i粒径为d j，颗粒i的体积含量为v j，且d j>d i； The converter primary flue gas sonic agglomeration dust removal device according to claim 8, wherein the control system (18) obtains the particle size and content of the two kinds of particles i and particle j with the largest content in the smoke, and set particle i diameter d i, i is the volume content of the particles v i, i particle diameter of d j, i is the volume content of the particles v j, and d j> d i;
    所述控制***(18)根据下面公式确定声波团聚模块发出的声波频率和声强：The control system (18) determines the sound wave frequency and sound intensity emitted by the sound wave agglomeration module according to the following formula:
    Figure PCTCN2021070586-appb-100001
    Figure PCTCN2021070586-appb-100001
    式中：Where:
    η为团聚效率，％；η is the reunion efficiency, %;
    α为修正系数；α is the correction factor;
    p为声波团聚模块发出的声压，Pa；p is the sound pressure emitted by the acoustic reunion module, Pa;
    f为声波团聚模块发出的声波频率，Hz；f is the frequency of the sound wave emitted by the sound wave agglomeration module, Hz;
    d i为颗粒i粒径，μm； d i is the particle size of particle i, μm;
    d j为颗粒j粒径，μm； d j is the particle size of particle j, μm;
    v i为颗粒i的体积含量，％； v i is the volume content of particle i, %;
    v j为颗粒j的体积含量，％。 v j is the volume content of particle j, %.
  10. 根据权利要求8所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述壳体(1)内沿流向依次设有声波除垢除尘模块、一级声波团聚除尘模块(4)和二级声波团聚除尘模块(5)；所述一级声波团聚除尘模块(4)包括一级旋流除尘模块和一级声波团聚模块；所述二级声波团聚除尘模块(5)包括二级旋流除尘模块和二级声波团聚模块；第一传感器(181)用于检测一级声波团聚模块输入端内的烟尘中粒径大小和含量；所述控制***(18)根据第一传感器(181)检测值调整所述一级声波团聚模块发出的声波频率和声强；第二传感器(182)用于检测二级声波团聚模块输入端内的烟尘中粒径大小和含量；所述控制***(18)根据第二传感器(182)检测值调整所述二级声波团聚模块发出的声波频率和声强。The converter primary flue gas sonic agglomeration and dust removal device according to claim 8, characterized in that the housing (1) is provided with a sonic descaling and dust removal module, a first-stage sonic agglomeration dust-removing module (4) and a second-stage sonic dust-removing module (4) in sequence along the flow direction. Acoustic agglomeration dust removal module (5); the first-level sonic agglomeration dust removal module (4) includes a first-level swirling dust removal module and a first-level sonic agglomeration module; the second-level sonic agglomeration dust removal module (5) includes a second-level vortex dust removal Module and second-level acoustic agglomeration module; the first sensor (181) is used to detect the size and content of the smoke and dust in the input end of the first-level acoustic agglomeration module; the control system (18) is based on the detection value of the first sensor (181) Adjust the frequency and sound intensity of the sound wave emitted by the first-level acoustic wave agglomeration module; the second sensor (182) is used to detect the size and content of the smoke and dust in the input end of the second-level acoustic wave agglomeration module; the control system (18) is based on The detection value of the second sensor (182) adjusts the sound wave frequency and sound intensity emitted by the second-level sound wave agglomeration module.
  11. 根据权利要求10所述的转炉一次烟气声波团聚除尘装置，其特征在于，当所述第一传感器(181)检测出一级声波团聚模块输入端内的烟尘中PM>2.5的颗粒含量＞80％且含尘量小于50mg时，所述控制***(18)控制所述一级声波团聚模块发出的声波频率为500～1000Hz和声强为150～155dB；当所述第二传感器(182)检测出二级声波团聚模块输入端内的烟尘中PM>2.5的颗粒含量＜10％且含尘量小于20mg时，所述控制***(18)控制所述二级声波团聚模块发出的声波频率为1000～2000Hz和声强为155～160dB。The converter primary flue gas sonic agglomeration dust removal device according to claim 10, characterized in that, when the first sensor (181) detects that the particulate content of PM>2.5 in the dust at the input end of the primary sonic agglomeration module>80 % And the dust content is less than 50mg, the control system (18) controls the sound wave frequency of the first-level acoustic agglomeration module to be 500-1000 Hz and the sound intensity to 150-155 dB; when the second sensor (182) detects When the particulate content of PM>2.5 in the smoke and dust in the input end of the secondary acoustic wave agglomeration module is less than 10% and the dust content is less than 20mg, the control system (18) controls the frequency of the sound wave emitted by the secondary acoustic wave agglomeration module to 1000 ～2000Hz and the sound intensity is 155～160dB.
  12. 根据权利要求1-7任一项所述的转炉一次烟气声波团聚除尘装置，其特征在于，还包括冷凝旋流收水设备(17)，所述冷凝旋流收水设备(17)与出口(12)连接，用于去除烟气中的水份。The converter primary flue gas sonic agglomeration dust removal device according to any one of claims 1-7, characterized in that it further comprises a condensing swirling water collection device (17), the condensing swirling water collection device (17) and an outlet (12) Connection, used to remove moisture in the flue gas.
  13. 根据权利要求12所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述冷凝旋 流收水设备(17)包括设备本体，所述设备本体内部设有若干旋流收水组件(17-1)，用于通过旋流引导烟气；所述设备本体一端设有冷凝烟气进口(17-2)，另一端设置冷凝烟气出口(17-3)，用于在旋流收水组件(17-1)外部冷凝。The converter primary flue gas sonic agglomeration dust removal device according to claim 12, characterized in that the condensing swirling water collection equipment (17) comprises an equipment body, and a plurality of swirling water collection components (17) are arranged inside the equipment body. -1), used to guide the flue gas through the swirling flow; one end of the device body is provided with a condensed flue gas inlet (17-2), and the other end is provided with a condensed flue gas outlet (17-3) for collecting water in the swirling flow Condensation outside the assembly (17-1).
  14. 根据权利要求13所述的转炉一次烟气声波团聚除尘装置，其特征在于，所述旋流收水组件(17-1)为旋流脱水器，若干所述旋流脱水器阵列排布在设备本体内部。The converter primary flue gas sonic agglomeration dust removal device according to claim 13, characterized in that the cyclone water collection assembly (17-1) is a cyclone dehydrator, and several arrays of the cyclone dehydrator are arranged in the equipment Inside the body.
  15. 一种权利要求12所述的转炉一次烟气声波团聚除尘装置在转炉烟气除尘中的应用。An application of the converter primary flue gas sonic agglomeration dust removal device according to claim 12 in converter flue gas dust removal.
PCT/CN2021/070586 2020-01-13 2021-01-07 Acoustic agglomeration dust removal apparatus for converter primary flue gas WO2021143608A1 (en)

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