CN106369617A - Efficient VOC treatment system and treatment process flow adopting novel heat exchanger - Google Patents
Efficient VOC treatment system and treatment process flow adopting novel heat exchanger Download PDFInfo
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- CN106369617A CN106369617A CN201610974246.8A CN201610974246A CN106369617A CN 106369617 A CN106369617 A CN 106369617A CN 201610974246 A CN201610974246 A CN 201610974246A CN 106369617 A CN106369617 A CN 106369617A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 104
- 239000002912 waste gas Substances 0.000 claims abstract description 96
- 230000005611 electricity Effects 0.000 claims abstract description 35
- 238000006555 catalytic reaction Methods 0.000 claims description 126
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 68
- 238000002485 combustion reaction Methods 0.000 claims description 65
- 238000005259 measurement Methods 0.000 claims description 64
- 238000001514 detection method Methods 0.000 claims description 57
- 238000012545 processing Methods 0.000 claims description 26
- 239000003610 charcoal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims 1
- 238000007084 catalytic combustion reaction Methods 0.000 abstract description 13
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 abstract 4
- 238000002203 pretreatment Methods 0.000 abstract 1
- 239000006200 vaporizer Substances 0.000 description 17
- 239000003054 catalyst Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 239000010425 asbestos Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 108010063955 thrombin receptor peptide (42-47) Proteins 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses an efficient VOC treatment system and treatment process flow adopting a novel heat exchanger, and belongs to the technical field of waste gas treatment equipment. The efficient VOC treatment system is characterized in that the gas outlet end of a pre-treatment module communicates with the gas inlet end of a catalytic combustion module; the gas outlet end of the catalytic combustion module communicates with the atmosphere; a heat exchange unit is arranged between a power generation unit and the gas outlet end of the catalytic combustion module; and the power generation module is electrically connected with the catalytic combustion module through a wire and provides electricity for the catalytic combustion module. By adoption of the efficient VOC treatment system adopting the novel heat exchanger, environment pollution is avoided, and heat generated after VOC waste gas is combusted can be fully reutilized, so that self energy supply is guaranteed, and energy waste is effectively avoided; the VOC waste gas is effectively treated by pre-treating the VOC waste gas and exhausting the VOC waste gas into the atmosphere after catalytic combustion; and low-temperature gas after catalytic combustion and primary heat exchange is utilized for heat-exchange power generation by the power generation module through the heat exchange unit, electric energy is provided for heating of the catalytic combustion module, and the utilization rate of the energy sources is increased accordingly.
Description
Technical field
A kind of efficient voc processing system of use new type heat exchanger and its handling process, belong to waste gas treatment equipment technology
Field.
Background technology
Voc is a kind of volatile organic compound, essentially from petrochemical industry, pharmacy, printing, spray painting, motor vehicles, system
In the waste gas of the industries such as footwear discharge.Such organic compounds is to constitute huge injury to health, and meeting and air
In no2Reaction generates o3, make o in lower atmosphere3Concentration raises, and forms photochemical fog, is detrimental to health, leads to farming
The thing underproduction.
Existing main voc treatment technology includes heat accumulating type thermal oxidizer technology (rto) and catalytic combustion technology, and
Although rto efficiency is higher, volume is big, price is high, thus it is big to carry out difficulty.In existing catalytic combustion technology, the profit of used heat
Low with rate, that is, untreated gas with burning after gas heat exchanger effectiveness low it is therefore desirable to supplement to carry out be catalyzed burning gas
Body supplementary heating, this just brings high energy consumption, the big problem of heat waste.According to statistics, to the gas after untreated gas preheating
Temperature still has 150 DEG C about, and this portion gas is directly discharged into air, can be to environment, and the heat of this portion gas
Amount does not make full use of, and causes the waste of energy.
Content of the invention
The technical problem to be solved in the present invention is: overcomes the deficiencies in the prior art, provides a kind of thorough to voc exhaust-gas treatment
Bottom, catalysis co-fired waste heat make full use of and control be discharged in air process after gas temperature use new type heat exchanger efficient
Voc processing system and its handling process.
The technical solution adopted for the present invention to solve the technical problems is: this uses the efficient voc process of new type heat exchanger
System it is characterised in that: include pretreatment module, catalysis combustion module, electricity generation module and control unit, pretreatment module
Outlet side connect with the inlet end of catalysis combustion module, is catalyzed the outlet side of combustion module and atmosphere, electricity generation module with urge
It is provided with heat exchange unit, electricity generation module is electrically connected with catalysis combustion module by wire and is to urge between the outlet side changing combustion module
Change combustion module to power, voc waste gas is entered by the inlet end of pretreatment module, after catalysis combustion module burning, arrange air
In, electricity generation module by heat exchange unit with burning after voc waste gas heat exchange and utilize heat generating；Control unit and pretreatment mould
Block, catalysis combustion module are connected with electricity generation module, control and detect the work of modules.
Preferably, also include heat exchanger, heat exchanger is arranged on the outlet side of pretreatment module and catalysis combustion module is given vent to anger
Between end.
Preferably, described pretreatment module includes filter, air inlet detection three-way valve, inlet gas concentration sensor and work
Property charcoal catcher, the outlet side of filter and air inlet detect that the inlet end of three-way valve is connected, and air inlet detects that one, three-way valve is given vent to anger
End is connected with catalysis combustion module, is connected with catalysis combustion module, air inlet is dense after another outlet side series connection activated carbon trap
Degree sensor is arranged between filter and air inlet detection three-way valve；Inlet gas concentration sensor and air inlet detection three-way valve all with control
Unit processed is connected.
Preferably, it is provided with aerofluxuss detection three-way valve, activated carbon between described activated carbon trap and catalysis combustion module
The inlet end that three-way valve is detected with aerofluxuss in the outlet side of catcher connects, and aerofluxuss detect that two outlet sides of three-way valve connect respectively
Catalysis combustion module and the inlet end of activated carbon trap, are provided with exhaust rich between activated carbon trap and aerofluxuss detection three-way valve
Degree sensor, exhaust concentration sensor is all connected with control unit with aerofluxuss detection three-way valve.
Preferably, described catalysis combustion module includes heater and catalytic reaction chamber, the inlet end of heater with pre-
The outlet side connection of processing module, the outlet side of heater connected with the inlet end of catalytic reaction chamber, the giving vent to anger of catalytic reaction chamber
End is connected with heat exchange unit inlet end；Supply module is connected with heater, and is heating installation power supply.
Preferably, it is provided with temperature detection three-way valve, temperature detection three-way valve between described heater and catalytic reaction chamber
Inlet end connect with the outlet side of heater, two outlet sides of temperature detection three-way valve respectively with the inlet end of heater and
The inlet end connection of catalytic reaction chamber, is provided with detection temperature sensor, detection temperature between heater and temperature detection three-way valve
Sensor is all connected with control unit with temperature detection three-way valve.
Preferably, described electricity generation module includes organic turbine and electromotor, the inlet end of organic turbine and outlet side
All be connected with heat exchange unit and form circulation line, in circulation line, be filled with organic working medium, the input shaft of electromotor with organic
Flat output shaft is connected；Electromotor is connected with catalysis combustion module and is that catalysis combustion module is powered.
Preferably, concentration repetition measurement three-way valve, the inlet end of concentration repetition measurement three-way valve and the outlet side of heat exchange unit are also included
Connection, two outlet sides inlet end and atmosphere with pretreatment module respectively of concentration repetition measurement three-way valve, heat exchange unit with
It is provided with repetition measurement concentration sensor, repetition measurement concentration sensor and concentration repetition measurement three-way valve are all single with control between concentration repetition measurement three-way valve
Unit is connected.
Preferably, temperature repetition measurement three-way valve, the inlet end of temperature repetition measurement three-way valve and the outlet side of heat exchange unit are also included
Connection, two outlet sides inlet end and atmosphere with heat exchange unit respectively of temperature repetition measurement three-way valve, heat exchange unit and temperature
It is provided with repetition measurement temperature sensor, repetition measurement temperature sensor and temperature repetition measurement electromagnetic valve are all and control unit between degree repetition measurement three-way valve
It is connected.
A kind of handling process of the efficient voc processing system of above-mentioned use new type heat exchanger it is characterised in that: include as
Lower step:
(1) pretreatment module carries out pretreatment to voc waste gas, makes voc waste gas reach the concentration specified；
(2) voc waste gas enters catalysis combustion module after reaching finite concentration, and burns in catalysis combustion module, removes organic
Composition；
(3) waste gas and the untreated heat exchange of voc gas after burning, then with by heat exchange unit and electricity generation module secondary heat exchange
After arrange in air；
(4) electricity generation module utilizes the heat of secondary heat exchange to generate electricity, and provides electric energy for catalysis combustion module.
Compared with prior art, the present invention is had the beneficial effect that
1st, the pretreatment module of this efficient voc processing system using new type heat exchanger can carry out pretreatment to waste gas, thus
Ensure the concentration of Organic substance in voc waste gas, and then ensure that the organic principle in voc waste gas can be abundant in catalysis burning
Burning, improves voc exhaust treatment efficiency, electricity generation module carries out heat exchange by heat exchange unit processed voc gas, and utilizes heat
Generate electricity, the temperature making to drain into the gas in air reduces, it is to avoid to environment additionally it is possible to after to voc waste gas burning
Heat is recycled it is achieved that energy is from supplying, it is to avoid energy waste.
2nd, heat exchanger tentatively can be lowered the temperature to the carrying out of voc waste gas after burning, and pretreated voc waste gas is carried out
Preheating, such that it is able to maintain certain temperature when entering catalysis combustion module burning, is conducive to the catalysis of voc waste gas to burn.
3rd, filter filters out the particulate contamination in voc waste gas or water droplet, thus avoiding affecting the catalysis combustion of voc waste gas
Burn；Inlet gas concentration sensor can detect the concentration of voc in waste gas, be delivered directly to catalysis burning when concentration reaches designated value
Module, when concentration is relatively low, enters catalysis combustion module, thus keeping away after voc waste gas being concentrated by activated carbon trap
Exempt from voc concentration in waste gas too low and insufficient problem of burning occurs.
4th, exhaust concentration sensor can detect the concentration of voc in the voc waste gas that activated carbon trap is discharged, in the offgas
Voc concentration is delivered in activated carbon trap when not enough again, thus ensureing in the voc waste gas being transported in catalysis combustion module
Voc be attained by prescribed concentration it is ensured that catalysis burning effect.
5th, heater heats to voc waste gas, thus ensure voc waste gas to enter back into during catalytic reaction chamber reaching catalysis combustion
Burn reaction temperature, improve the efficiency of catalysis burning.
6th, detection temperature sensor can detect heater discharge voc waste gas temperature, control heater plus
Heat, makes the voc waste gas of entrance catalytic reaction chamber reach certain temperature, saves the energy it is ensured that voc waste gas is in catalytic reaction
Can fully burn in interior.
7th, organic working medium carries out heat exchange by heat exchange unit and catalytic reaction chamber expellant gas, changes into gaseous state, gaseous state
Organic working medium promote the acting of organic turbine, and then drive electrical power generators, thus secondary utilization is carried out to heat energy, it is to avoid energy
The waste of amount.
8th, repetition measurement concentration sensor and concentration repetition measurement three-way valve can match, thus exchanging the voc of hot cell gas outlet
The concentration of the voc in waste gas is detected it is ensured that the concentration being discharged to voc in the gas in air is up to standard, and underproof gas is again
Secondary it is delivered to pretreatment module.
9th, repetition measurement temperature sensor and temperature repetition measurement three-way valve match, thus exchanging the temperature of the gas of hot cell gas outlet
Degree is detected it is ensured that the emission temperature being discharged in air is up to standard, is conveyed to heat exchange unit again for overheated gas, that is,
Avoid the overheated pollution to environment of emission, turn avoid the waste of energy.
10th, the handling process of this efficient voc processing system using new type heat exchanger is by carrying out pre- place to voc module
Reason, catalysis burning heel row are to in air, thus effective process voc waste gas, it is to avoid air is polluted；Electricity generation module leads to
Cross heat exchange unit and carry out secondary heat exchange with the gas through a heat exchange, thus the temperature that guarantee is discharged to the gas in air is relatively low,
Avoid air is polluted additionally it is possible to carry out secondary heat exchange generating using the low-grade heat after voc waste gas catalytic combustion,
There is provided electric energy for catalysis combustion module, thus improve the utilization rate of the energy.
Brief description
Fig. 1 is the structural representation of the efficient voc processing system using new type heat exchanger.
Fig. 2 is the schematic perspective view of heat exchanger core body.
Fig. 3 is the schematic perspective view of heat exchange orifice plate.
Fig. 4 is the main view cross-sectional schematic of heater.
Fig. 5 is the left view schematic diagram of heater.
Fig. 6 is the schematic perspective view of dividing plate.
Fig. 7 is the main view cross-sectional schematic of catalytic reaction chamber.
In figure: 1, filter 2, blower fan 3, air inlet detection three-way valve 4, check valve 5, activated carbon trap 6,
Aerofluxuss detection three-way valve 7, catalytic reaction chamber 701, catalytic reaction cylinder 702, catalytic temperature sensor 703, porous
Plate 704, catalyst layer 705, cool air inlet 8, heat exchanger 801, hot gas path 802, cold air path 803,
Heat exchanger core body 9, vaporizer 10, concentration repetition measurement three-way valve 11, temperature repetition measurement three-way valve 12, pipeline pump 13, cold
Condenser 14, organic turbine 15, electromotor 16, temperature detection three-way valve 17, heater 1701, heater cylinder
1702nd, foamed ceramics 1703, asbestos layer 1704, coil 1705, dividing plate 1706, spoiler.
Specific embodiment
Fig. 1 ~ 7 are highly preferred embodiment of the present invention, and 1 ~ 7 the present invention will be further described below in conjunction with the accompanying drawings.
A kind of efficient voc processing system of use new type heat exchanger it is characterised in that: include pretreatment module, catalysis combustion
Burn module, electricity generation module and control unit, the outlet side of pretreatment module is connected with the inlet end of catalysis combustion module, catalysis
The outlet side of combustion module and atmosphere, are provided with heat exchange unit between the outlet side of electricity generation module and catalysis combustion module, send out
Electric module is passed through wire and is connected with catalysis combustion module, and powers for catalysis combustion module, voc waste gas entering by pretreatment module
Gas end enters, and arranges in air after catalysis combustion module burning, voc waste gas after heat exchange unit with burning for the electricity generation module
Heat exchange, and generated electricity using heat；Control unit is connected with pretreatment module, catalysis combustion module and electricity generation module, controls and examines
Survey the work of modules.The pretreatment module of this efficient voc processing system using new type heat exchanger can be carried out to waste gas
Pretreatment, thus ensureing the concentration of Organic substance in voc waste gas, and then ensure that organic in voc waste gas in catalysis burning
Composition can fully burn, and with efficient process voc gas, electric module carries out heat exchange by heat exchange unit and processed voc gas,
And generated electricity using heat, so that the temperature draining into the gas in air is reduced, it is to avoid to environment additionally it is possible to give up to voc
Heat after gas burning is recycled, it is to avoid energy waste.
Specific: as shown in Figure 1: pretreatment module includes filter 1, air inlet detection three-way valve 3, inlet gas concentration sensor
And activated carbon trap 5, the outlet side of filter 1 and air inlet detect that the inlet end of three-way valve 3 connect, air inlet detection three-way valve
3 outlet side is connected with catalysis combustion module, and air inlet detects another outlet side and the activated carbon trap 5 of three-way valve 3
Inlet end connection, the outlet side of activated carbon trap 5 be catalyzed combustion module connect, another of activated carbon trap 5 enters
Gas end is fresh air inlet end.It is provided with inlet gas concentration sensor, inlet gas concentration senses between filter 1 and air inlet detection three-way valve 3
With air inlet, device detects that three-way valve 3 is all connected with control unit, control unit is plc controller, and control unit can also be monolithic
Machine.Inlet gas concentration sensor is used for the voc waste gas entering air inlet detection three-way valve 3 being detected, as voc in voc waste gas
When concentration reaches setting concentration, voc waste gas detects through air inlet and is delivered directly to after three-way valve 3 be catalyzed combustion module；In voc waste gas
The concentration of voc is less than when setting concentration, and through air inlet, voc waste gas detects that three-way valve 3 is conveyed to activated carbon trap 5, activated carbon is received
Storage 5 is used for improving the concentration of voc in voc waste gas, and the concentration of setting is usually 2000mg/m3.Filter 1 and air inlet detection three
It is provided with blower fan 2, blower fan 2 can improve voc waste gas in the efficient voc processing system using new type heat exchanger between port valve 3
Flow velocity, thus improve the treatment effeciency of the efficient voc processing system using new type heat exchanger.
It is provided with aerofluxuss detection three-way valve 6, the going out of activated carbon trap 5 between activated carbon trap 5 and catalysis combustion module
The inlet end that three-way valve 6 is detected with aerofluxuss in gas end connects, and aerofluxuss detect that two outlet sides of three-way valve 6 are collected with activated carbon respectively
The inlet end of device 5 connects with catalysis combustion module.It is provided with exhaust concentration between activated carbon trap 5 and aerofluxuss detection three-way valve 6
Sensor, exhaust concentration sensor and aerofluxuss detect that three-way valve 6 is all connected with control unit.Exhaust concentration sensor is used for detecting
In the voc waste gas that activated carbon trap 5 is discharged, the concentration of voc, when voc concentration reaches prescribed concentration, voc waste gas is conveyed to
Catalysis combustion module, when voc concentration is not up to prescribed concentration, voc waste gas is conveyed to activated carbon trap 5 again, thus
Ensure that the concentration of voc in the voc waste gas be delivered to catalysis combustion module reaches specified value it is ensured that being catalyzed more filling of burning
Point.
It is provided with check valve 4, thus avoiding detecting threeway in aerofluxuss between air inlet detection three-way valve 3 and activated carbon trap 5
Valve 6 makes voc waste gas be transmitted back to during activated carbon trap 5 to occur voc exhaust gas recirculation to detect the problem of three-way valve 3 to air inlet.
Catalysis combustion module includes heater 17 and catalytic reaction chamber 7, the inlet end of heater 17 and pretreatment module
Outlet side connection, the outlet side of heater 17 connects with the inlet end of catalytic reaction chamber 7, the outlet side of catalytic reaction chamber 7 and
Heat exchange unit inlet end connects；Supply module is connected with heater 17, and powers for heater 17.Heater 17 is used for voc
Waste gas is heated, so that voc waste gas reaches certain catalyst combustion reaction temperature, entering back into can during catalytic reaction chamber 7
More fully burn.
It is provided with heat exchanger 8, air inlet detection three-way valve 3 and aerofluxuss detection threeway between catalysis combustion module and pretreatment module
Valve 6 is connected with an inlet end of heat exchanger 8 simultaneously, heat exchanger 8 outlet side corresponding with this inlet end and heater 17
Inlet end connects.Another inlet end of heater 17 is connected with the outlet side of catalytic reaction chamber 7, heat exchanger 8 and this inlet end
Corresponding outlet side is connected with heat exchange unit.Heat exchange unit is vaporizer 9, the outlet side of vaporizer 9 and atmosphere, thus
Gas after catalysis burning is drained in air.Heat exchanger 8 can be to the voc waste gas entering heater 17 and through catalytic reaction chamber
7 expellant gas heat exchange, thus preheating to the gas entering heater 17, the heat energy of effectively utilizes catalyst combustion reaction,
Thus reducing the temperature of the gas draining in air.
It is provided with temperature detection three-way valve 16, the air inlet of temperature detection three-way valve 16 between heater 17 and catalytic reaction chamber 7
End is connected with the outlet side of heater 17, and two outlet sides of temperature detection three-way valve 16 are respectively communicated with entering of catalytic reaction chamber 7
Gas end and the inlet end of heater 17.It is provided with detection temperature sensor, detection between temperature detection three-way valve 16 and heater 17
Temperature sensor is all connected with control unit with temperature detection three-way valve 16.Detection temperature sensor is used for detecting that heater 17 goes out
The temperature of gas end gas, when the temperature of gas reaches assigned temperature, delivers gas to catalytic reaction chamber 7；Temperature when gas
When degree is less than assigned temperature, gas is transmitted back to heater 17 and heats again, thus when ensure that gas enters catalytic reaction chamber 7
Certain temperature can be kept it is ensured that the Catalytic Combustion Effect of voc waste gas, in the present embodiment it is intended that temperature be 300
℃.
It is provided with check valve 4, thus preventing from sending heater 17 back between the outlet side of heat exchanger 8 and heater 17 inlet end
Gas backstreaming is to heat exchanger 8.
Electricity generation module includes organic turbine 14 and electromotor 15, the inlet end of organic turbine 14 and outlet side all with evaporation
Device 9 is connected and forms circulation line, is filled with organic working medium in circulation line, and the discrepancy axle of electromotor 15 is defeated with organic turbine 14
Shaft is connected；Electromotor 15 is connected with heater 17 and powers for heater 17.The outlet side of organic turbine 14 and vaporizer 9 it
Between be sequentially provided with condenser 13 and pipeline pump 12, condenser 13 be also associated with circulate cooling water so that organic working medium is complete
Liquefaction, pipeline pump 12 is used for conveying organic working medium, and then ensure that the generating efficiency of electromotor 15.Due to entering in vaporizer 9
Gas temperature be 80 DEG C ~ 160 DEG C, therefore in the present embodiment, preferred organic working medium be r227ea, thus ensureing process
After vaporizer 9, organic working medium can completely vaporize.
Concentration repetition measurement three-way valve 10 and temperature repetition measurement three-way valve 11 have been sequentially connected in series on the outlet side of vaporizer 9.Concentration is multiple
The inlet end surveying three-way valve 10 is connected with the outlet side of vaporizer 9, and two outlet sides of concentration repetition measurement three-way valve 10 connect respectively
The inlet end of activated carbon trap 5 and the inlet end of temperature repetition measurement three-way valve 11, an outlet side of temperature repetition measurement three-way valve 11
Connect the inlet end of vaporizer 9 respectively, another outlet side of temperature repetition measurement three-way valve 11 is used for draining into gas in air.Steam
Send out and between device 9 and concentration repetition measurement three-way valve 10, set repetition measurement concentration sensor, concentration repetition measurement three-way valve 10 and temperature repetition measurement three-way valve
It is provided with repetition measurement temperature sensor between 11.Repetition measurement concentration sensor, concentration repetition measurement three-way valve 10, repetition measurement temperature sensor and temperature
Repetition measurement three-way valve 11 is all connected with control unit.Repetition measurement temperature sensor is used for detecting the concentration of voc in expellant gas, when dense
When spending up to standard, gas is delivered to temperature repetition measurement three-way valve 11, when concentration is not up to standard, delivers gas to activated carbon trap 5.
Repetition measurement temperature sensor is used for detecting the temperature of expellant gas, when temperature is up to standard, gas is discharged in air, when gas not
When up to standard, gas is sent again back to vaporizer 9.Because when the concentration to gas carries out repetition measurement, the temperature of gas can reduce, because
The order of this concentration repetition measurement three-way valve 10 and temperature repetition measurement three-way valve 11 can not overturn.It is provided with list between heat exchanger 8 and vaporizer 9
To valve 4.In the present embodiment, the concentration up to standard of repetition measurement concentration sensor detection is 150mg/m3, repetition measurement temperature sensor detection
Temperature up to standard be 40 DEG C.
As shown in Figure 2: heat exchanger 8 includes heat exchanger core body 803 and outer cover of heat exchanger.Heat exchanger core body 803 is rectangular
Body, heat exchanger core body 803 is provided with hot gas path layer and the cold air path layer of level, and hot gas path layer and cold air path layer are along height
Degree direction interval setting.Each hot gas path layer includes the hot gas path 801 of multiple horizontally spaced settings, each cold air
Channel layer includes the cold air path 802 of multiple horizontally spaced settings.Cold air path 802 is used for being conveyed to voc waste gas
Heater 17, hot gas path 801 is used for for the gas after catalysis burning being conveyed to vaporizer 9.
Each hot gas path layer is made up of two pieces of heat exchange orifice plates, and every piece of heat exchange orifice plate has multiple semi-circular channel, often
Individual semi-circular channel is made up of the multistage being connected, and the diameter parallel setting of often adjacent two sections, thus formed being staggered in arrangement,
Two pieces of heat exchange orifice plate combinations, form the hot gas path 801 of stagger arrangement, so can effectively reduce stress concentration, improve to catalysis combustion
The adaptability of the high temperature and high pressure environment burning generation amount of heat and causing, had both improve the performance of high temperature high voltage resistant, simultaneously stagger arrangement
The raising being disposed with beneficial to heat exchange efficiency.And cold air path 802 plate wing passage, there is secondary fin, compact conformation, heat exchange is imitated
Rate is high.
Combination is conducive to while high heat exchange efficiency, and reply is herein because catalysis burning discharges big heat
The High Temperature High Pressure difference ring border producing.
As shown in Figure 3: heater 17 include heater cylinder 1701 and around the heater cylinder 1701 outer wall setting
Coil 1704.It is provided with asbestos layer 1703 between coil 1704 and heater cylinder 1701, asbestos layer 1703 can play insulation
Effect.
It is interval with multiple foamed ceramicses, heater cylinder 1701 is closed by foamed ceramics in heater cylinder 1701, from
And so that flow velocity in heating cylinder 1701 for the voc waste gas is reduced, the time of staying increases additionally it is possible to make homogeneous heating, and then ensures
Heating-up temperature to voc waste gas, and homogeneous heating, no dead angle.
As shown in Fig. 4 ~ 5: heater cylinder 1701 is spaced apart multiple passages by dividing plate 1705, dividing plate 1705 has eight pieces,
Thus heater cylinder 1701 is separated into eight passages, increased electromagnetic eddy effect.Dividing plate 1705 is along heater cylinder
1701 axially arranged, the both sides of dividing plate 1705 are equipped with the spoiler 1706 of arc, further increase gas in heater
Heat time heating time in cylinder 1701, enhance heat exchange so that heating evenly.
As shown in Figure 6: catalytic reaction chamber 7 includes the catalyst in catalytic reaction cylinder 701 and catalytic reaction cylinder 701
Layer 704.The diameter of the upper and lower ends of catalytic reaction cylinder 701 is less than the diameter at middle part, the inside interval of catalytic reaction cylinder 701
It is provided with two or three block of porous plate 703, the diameter of every block of porous plate 703 is slightly smaller than the internal diameter of catalytic reaction cylinder 701, and anti-with catalysis
The inner wall sealing answering cylinder 701 is arranged, catalyst layer 704 be fixed on porous plate 703 bottom and with catalytic reaction cylinder 701
Inner wall sealing is arranged, and the downside of every block of porous plate 703 is provided with two catalyst layers 704, and this two-layer catalyst interval setting can
Effectively to prevent short circuit such that it is able to preferably ensure the catalytic effect to voc waste gas.
It is provided with catalytic temperature sensor 702 and cool air inlet 705, catalysis temperature between two often adjacent porous plates 703
Degree sensor 702 is used for the temperature in real-time detection catalytic reaction cylinder 701, and cool air inlet 705 is used for catalytic reaction cylinder
It is passed through cold air in body 701 such that it is able to avoid the temperature in catalytic reaction cylinder 701 too high, extend catalyst life, to urging
Change reative cell 7 and follow-up equipment is protected.
Due to the presence of catalyst layer 704, the speed of catalytic reaction cylinder 701 can be made to reduce, on catalytic reaction cylinder 701
The diameter at lower two ends is less than the diameter at middle part such that it is able to ensure that catalytic reaction cylinder 701 inlet end, outlet side and catalysis are anti-
Answer the flow velocity of the voc waste gas at cylinder 701 middle part equal, can either avoid to the efficient voc process entirely using new type heat exchanger
The flow velocity of system impacts, and it can be avoided that catalytic reaction cylinder 701 or the efficient voc process entirely using new type heat exchanger
Pressure in system is excessive, thus the efficient voc processing system protected catalytic reaction cylinder 701 and entirely use new type heat exchanger
System.The bottom of every block of porous plate 703 is provided with two catalyst layers 704, ensure that gas can be when by catalyst layer 704
Can preferably react, thus effective process voc waste gas is it is ensured that be catalyzed the effect of burning, catalyst layer 704 can be fitted as requested
When the increase number of plies.
The handling process of this efficient voc processing system using new type heat exchanger it is characterised in that: comprise the steps:
(1) pretreatment module carries out pretreatment to voc waste gas, makes voc waste gas reach the concentration specified；
The inlet end through filter 1 for the voc waste gas enters the efficient voc processing system entirely using new type heat exchanger, and filter 1 is right
Voc waste gas is filtered, thus removing the particulate contamination in voc waste gas or water smoke, it is to avoid particulate contamination or water smoke pair
The catalysis burning of voc waste gas counteracts.Blower fan 2 can improve the flow velocity of the voc waste gas after filtration, so that voc waste gas is all
Can be entered in the efficient voc processing system using new type heat exchanger with an identical flow velocity, it is to avoid the flow velocity of voc waste gas is neglected
Fast suddenly slow, thus leading to the effect being catalyzed burning unstable.Inlet gas concentration sensor is examined to the concentration of voc in voc waste gas
Survey, when the concentration of voc waste gas reaches prescribed concentration, air inlet detection three-way valve 3 makes voc waste gas be directly entered in heat exchanger 8；When
When the concentration of voc waste gas is less than prescribed concentration, air inlet detection three-way valve 3 makes voc waste gas enter in activated carbon trap 5, thus
Improve the concentration of voc in voc waste gas., after discharging in activated carbon trap 5, exhaust concentration sensor is to activated carbon for voc waste gas
Catcher 5 expellant gas are detected, when the concentration of voc reaches prescribed concentration, aerofluxuss detection three-way valve 6 makes voc waste gas
Enter in heat exchanger 8；When the concentration of voc is less than prescribed concentration, aerofluxuss detection three-way valve 6 makes voc waste gas be again introduced into activity
In charcoal catcher 5, thus ensure that the concentration entering voc when catalysis is burnt well, and then ensure the effect of catalysis burning.
(2) voc waste gas enters catalysis combustion module after reaching finite concentration, and burns in catalysis combustion module, removes
Organic principle；
Heat exchange of high-temperature gas in heat exchanger 8 and after catalysis burning for the voc waste gas, thus preheat voc waste gas.Through heat exchanger
The voc waste gas of 8 intensifications enters in heater 17, thus being effectively utilized the heat production of catalysis burning, reduces heating power consumption.Detection temperature
Degree sensor detects to the temperature of the voc waste gas that heater 17 is discharged, when reaching assigned temperature, temperature detection three-way valve
16 make gas enter in catalytic reaction chamber 7, when not up to assigned temperature, make gas be again introduced into heating in heater 17, protect
Card enters the temperature of the gas in catalytic reaction chamber 7, and then ensure that the effect of catalysis burning.
Voc waste gas burns in catalytic reaction chamber 7, thus removing the voc in voc waste gas.Gas after catalysis burning enters
Enter heat exchanger 8, the intensification to the gas in heater 17 to be entered, simultaneously own temperature be reduced to low-grade heat.
(3) waste gas after burning and a untreated heat exchange of voc gas, then change by heat exchange unit is secondary with electricity generation module
Arrange in air after heat；
In catalytic reaction chamber 7, expellant gas are entered in heat exchanger 8 and are once changed with the untreated voc waste gas in heat exchanger 8
Heat, then enters back in vaporizer 9, and with electricity generation module circulation line in organic working medium heat exchange, thus reducing temperature.Repetition measurement
Concentration sensor detects to vaporizer 9 expellant gas, when the concentration over-standard of voc in gas, concentration repetition measurement three-way valve
10 make gas come back in activated carbon trap 5, are processed again.When the concentration of voc in gas is less than normal concentration,
Concentration repetition measurement three-way valve 10 delivers gas to temperature repetition measurement three-way valve 11.Repetition measurement temperature sensor is examined to gas temperature
Survey, when temperature reaches standard temperature, gas is emitted in air temperature repetition measurement three-way valve 11, when temperature is higher than normal concentration
When, gas is conveyed to vaporizer 9 heat exchange cooling by temperature repetition measurement three-way valve 11 again, thus ensureing to drain into the gas in air
Voc concentration and temperature all reach discharge standard value, it is to avoid to environment.
(4) electricity generation module utilizes the heat of secondary heat exchange to generate electricity, and provides electric energy for catalysis combustion module；
Organic working medium is changed into gas after the gas secondary heat exchange after vaporizer 9 and a heat exchange, and enters in organic turbine 14
Organic turbine 14 is driven to rotate, organic turbine 14 drives electromotor 15 to rotate, and electricity is conveyed to heater 17 by electromotor 15.
Organic turbine 14 expellant gas enter in condenser 13, and condenser 13 in and water at low temperature heat exchange, thus liquefying.Pipeline pump
The flow velocity of the organic working medium after 12 pairs of liquefaction is accelerated, and is again introduced into heat exchange vaporization in vaporizer 9, thus forming circulation.Generate electricity
Module can carry out secondary utilization to the heat producing after voc waste gas catalytic combustion, and power for heater 17, it is to avoid process
The waste of tow taste heat after heat exchange, the energy realizing whole system automatically supplies, and improves capacity usage ratio.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention is made with other forms, appoints
What those skilled in the art possibly also with the disclosure above technology contents changed or be modified as equivalent variations etc.
Effect embodiment.But every without departing from technical solution of the present invention content, according to the present invention technical spirit to above example institute
Any simple modification, equivalent variations and the remodeling made, still falls within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of use new type heat exchanger efficient voc processing system it is characterised in that: include pretreatment module, catalysis burning
Module, electricity generation module and control unit, the outlet side of pretreatment module is connected with the inlet end of catalysis combustion module, catalysis combustion
Burn outlet side and the atmosphere of module, be provided with heat exchange unit between the outlet side of electricity generation module and catalysis combustion module, generate electricity
Module is electrically connected with catalysis combustion module by wire and is that catalysis combustion module is powered, voc waste gas entering by pretreatment module
Gas end enters, and arranges in air after catalysis combustion module burning, voc waste gas after heat exchange unit with burning for the electricity generation module
Heat exchange is simultaneously generated electricity using heat；Control unit is connected with pretreatment module, catalysis combustion module and electricity generation module, controls and detects
The work of modules.
2. use new type heat exchanger according to claim 1 efficient voc processing system it is characterised in that: also include changing
Hot device (8), heat exchanger (8) is arranged between the outlet side of pretreatment module and catalysis combustion module outlet side.
3. use new type heat exchanger according to claim 1 efficient voc processing system it is characterised in that: described is pre-
Processing module includes filter (1), air inlet detection three-way valve (3), inlet gas concentration sensor and activated carbon trap (5), mistake
The outlet side of filter (1) and air inlet detect that the inlet end of three-way valve (3) is connected, air inlet detection (3) outlet sides of three-way valve and
Catalysis combustion module is connected, and is connected with catalysis combustion module behind another outlet side series connection activated carbon trap (5), inlet gas concentration
Sensor is arranged between filter (1) and air inlet detection three-way valve (3)；Inlet gas concentration sensor and air inlet detection three-way valve
(3) all it is connected with control unit.
4. use new type heat exchanger according to claim 3 efficient voc processing system it is characterised in that: described work
Property charcoal catcher (5) and catalysis combustion module between be provided with aerofluxuss detection three-way valve (6), the outlet side of activated carbon trap (5)
The inlet end detecting three-way valve (6) with aerofluxuss connects, and aerofluxuss detect that two outlet sides of three-way valve (6) connect catalysis burning respectively
Module and the inlet end of activated carbon trap (5), are provided with aerofluxuss between activated carbon trap (5) and aerofluxuss detection three-way valve (6)
Concentration sensor, exhaust concentration sensor is all connected with control unit with aerofluxuss detection three-way valve (6).
5. use new type heat exchanger according to claim 1 efficient voc processing system it is characterised in that: described urges
Change combustion module and include heater (17) and catalytic reaction chamber (7), the inlet end of heater (17) is gone out with pretreatment module
Gas end connects, and the outlet side of heater (17) is connected with the inlet end of catalytic reaction chamber (7), the outlet side of catalytic reaction chamber (7)
Connect with heat exchange unit inlet end；Supply module is connected with heater (17), and powers for heater (17).
6. use new type heat exchanger according to claim 5 efficient voc processing system it is characterised in that: described plus
It is provided with temperature detection three-way valve (16), the inlet end of temperature detection three-way valve (16) between hot device (17) and catalytic reaction chamber (7)
Connect with the outlet side of heater (17), two outlet sides air inlet with heater (17) respectively of temperature detection three-way valve (16)
End connects with the inlet end of catalytic reaction chamber (7), is provided with detection temperature between heater (17) and temperature detection three-way valve (16)
Sensor, detection temperature sensor is all connected with control unit with temperature detection three-way valve (16).
7. use new type heat exchanger according to claim 1 efficient voc processing system it is characterised in that: described send out
Electric module includes organic turbine (14) and electromotor (15), and the inlet end of organic turbine (14) and outlet side are all and heat exchange unit
It is connected and is formed circulation line, in circulation line, be filled with organic working medium, the input shaft of electromotor (15) and organic turbine (14)
Output shaft is connected；Electromotor (15) is connected with catalysis combustion module and is that catalysis combustion module is powered.
8. use new type heat exchanger according to claim 1 efficient voc processing system it is characterised in that: also include dense
Degree repetition measurement three-way valve (10), the inlet end of concentration repetition measurement three-way valve (10) is connected with the outlet side of heat exchange unit, concentration repetition measurement three
Two outlet sides of port valve (10) inlet end and atmosphere with pretreatment module respectively, heat exchange unit and concentration repetition measurement threeway
Be provided with repetition measurement concentration sensor between valve (10), repetition measurement concentration sensor and concentration repetition measurement three-way valve (10) all with control unit phase
Even.
9. use new type heat exchanger according to claim 1 efficient voc processing system it is characterised in that: also include temperature
Degree repetition measurement three-way valve (11), the inlet end of temperature repetition measurement three-way valve (11) is connected with the outlet side of heat exchange unit, temperature repetition measurement three
Two outlet sides of port valve (11) inlet end and atmosphere with heat exchange unit respectively, heat exchange unit and temperature repetition measurement three-way valve
(11) be provided with repetition measurement temperature sensor between, repetition measurement temperature sensor and temperature repetition measurement electromagnetic valve (11) all with control unit phase
Even.
10. the handling process of the efficient voc processing system of the use new type heat exchanger described in a kind of any one of claim 1 ~ 9,
It is characterized in that: comprise the steps:
(1) pretreatment module carries out pretreatment to voc waste gas, makes voc waste gas reach the concentration specified；
(2) voc waste gas enters catalysis combustion module after reaching finite concentration, and burns in catalysis combustion module, removes organic
Composition；
(3) waste gas and the untreated heat exchange of voc gas after burning, then with by heat exchange unit and electricity generation module secondary heat exchange
After arrange in air；
(4) electricity generation module utilizes the heat of secondary heat exchange to generate electricity, and provides electric energy for catalysis combustion module.
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| US11529585B2 (en) * | 2020-04-27 | 2022-12-20 | Kellogg Brown & Root Llc | Thermal oxidation of volatile organic compounds using a catalyst layer within a waste heat recovery unit |
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