CN106237776B - A kind of device for recovering powder in metallurgy industry high-temperature flue gas and technique - Google Patents
A kind of device for recovering powder in metallurgy industry high-temperature flue gas and technique Download PDFInfo
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- CN106237776B CN106237776B CN201610859752.2A CN201610859752A CN106237776B CN 106237776 B CN106237776 B CN 106237776B CN 201610859752 A CN201610859752 A CN 201610859752A CN 106237776 B CN106237776 B CN 106237776B
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- flue gas
- temperature flue
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- filtering element
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- 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
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
Abstract
The present invention relates to the device for recovering powder and technique in a kind of metallurgy industry high-temperature flue gas, including gravitational settling+cyclonic separation combination unit (1) and ceramic tube filter (2), the gravitational settling+cyclonic separation combination unit (1) connection ceramic tube filter (2).High-temperature flue gas is passed through gravitational settling+cyclonic separation combination unit (1) and carries out pre-separation, the coarse granule trapped in ash bucket (104) can return to melting furnace to be continued to smelt as raw material；Gas after pre-separation enters ceramic tube filter (2) and carries out smart separation, when the dust on ceramic film filtering element (206) reaches saturation, online ash removal is carried out with online pulse jet system and automatic control system, ceramic film filtering element (206) is set to regenerate, simultaneously, the fine dust of collection also returns to melting furnace as raw materials for metallurgy, and purified gas is vented through chimney.Compared with prior art, the advantages that present invention has simple in structure, at low cost, and using reliable, equipment separative efficiency is high, dust removal process suitable for metallurgy industry high-temperature flue gas.
Description
Technical field
The present invention relates to the device for recovering powder and technique in high-temperature flue gas, more particularly, to a kind of metallurgy industry high temperature cigarette
Device for recovering powder in gas and technique.
Background technology
Due to metallurgy industry smelting process, including the links such as the preparation (crushing and screening) of raw material, fusing smelting, oxygen blast are not
It will produce a large amount of poisonous and hazardous high-temperature flue gas avoidablely, while also containing metal and various valuable elements entrainment of a large amount of
Particle.If these particles are directly discharged into air, serious environmental pollution is not only caused, health can also be caused very big
Harm.In addition, from the perspective of comprehensive utilization of resources, some subtle grits often contain noble element, even very precious
Expensive raw material, such as gold, silver, copper, indium, recycling these dust has very considerable economic benefit.
Currently, the equipment of high-temperature flue gas purification is broadly divided into three classes：Cyclone separator, electric precipitator and bag-type dusting
Device.Cyclone separator is although simple in structure, cheap, easy to use, but no matter is all reached from dust content or size distribution
Less than separation requirement, but it can be used as pre-separation equipment, be applied in combination with the isolation technics of other forms.Electric precipitator dedusting is imitated
Rate is high, and the pressure loss is low, but one-time investment and operating cost are high, and there is also the properties such as the specific resistance of dust and gas componant
Therefore the problems such as corrosion of sensibility and electrode, uses few under high temperature environment.Sack cleaner high dust collection efficiency, will not
Cause secondary pollution, convenient for directly recycling siccative, but that there are running resistances is big, filter bag is fragile and acidic fog resistance corrosive power is insufficient
The problems such as.
Therefore, exploitation is a kind of having efficient low-resistance, corrosion resistant purification techniques, solves the dust pollution question of metallurgy industry
As the task of top priority, the fine particle in separating flue can not only greatly reduce the discharge capacity that dust enters air, improve money
Source utilization rate, and it is significant to environmental protection.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of technological processes simply,
Device for recovering powder in the metallurgy industry high-temperature flue gas that dust organic efficiency is high, equipment cost is low and low energy consumption and technique.
The purpose of the present invention can be achieved through the following technical solutions：A kind of dust in metallurgy industry high-temperature flue gas returns
Receiving apparatus, which is characterized in that including gravitational settling+cyclonic separation combination unit and ceramic tube filter, the gravitational settling+
Cyclonic separation combination unit connection ceramic tube filter, high-temperature flue gas are passed through gravitational settling+cyclonic separation combination unit and carry out in advance
Separation, the gas after pre-separation enter ceramic tube filter and carry out smart separation, and purified gas is vented through chimney, the powder of recycling
Dirt returns to melting furnace.
The gravitational settling+cyclonic separation combination unit includes gravity settling chamber and is built in cyclonic separation therein
Device.
Preferably, the gravitational settling+cyclonic separation combination unit uses as pre-separation and is divided into two parts, gravitational settling
Room can trap 150~200 μm or more in flue gas of coarse granule, and cyclone separator can trap 20 μm or more of dust, and will trapping
Coarse granule and dust return melting furnace continue to smelt.
The cyclone separator is suitable for the tangential with top gap flow apron of metallurgy industry worst hot case
Inlet cyclones, cyclone separator top are equipped with card A.Using tapered flow apron particle is entered with air-flow
In cyclone body, when becoming circumference flowing from streamlined flow, the radial separation distance of particle is gradually reduced, and is conducive to gas-particle two-phase
Separation, improves dust organic efficiency.In addition, flow apron keeps certain gap with whirlwind top plate, not only resistance has significantly
Decline, and there has also been certain raisings for separative efficiency.There is good separating property using this structure type, be suitable for smelting
The working condition of golden industry high temperature.
Unstripped gas initially enters gravity settling chamber, in dusty gas grain size in 150~200 μm or more of dust due to sedimentation
Effect is separated.Then, dusty gas enters cyclone separator, and grain size is almost collected completely in 20 μm or more of dust
Get off.
Preferably, the gravity settling chamber does not set special space, but utilizes having around the cyclone separator of cylinder lower part
Space is limited, it is compact-sized, whole equipment is saved, four pieces of partition boards are set in the gravity settling chamber cylinder, it is annular in shape uniformly distributed,
In, close to gravity settling chamber import both sides two boards, left and right ends respectively with gravity settling chamber inner cylinder and cyclone separator
Outer barrel is connected, and upper end is connected with card A at the top of cyclone separator；Remaining two boards left and right ends also respectively with gravity settling chamber
Inner cylinder and cyclone separator outer barrel are connected, and upper end keeps certain distance with card A at the top of cyclone separator.Dust-contained airflow rushes
There is larger inertia force when to two boards close to gravity settling chamber import both sides, most thick part particle separated,
Other particles bypass this two boards with air-flow, counter to impact on the lower two pieces of partition boards of back location, by inertia force and centrifugation
The effect of power, slightly thin particle are also separated.
The import of the gravity settling chamber is high-temperature flue gas import, and gravity settling chamber bottom is equipped with dust outlet, should
Dust outlet is connected to melting furnace；The cyclone separator bottom is equipped with ash bucket, which is connected to melting furnace；The weight
Power sedimentation+cyclonic separation combination unit top is equipped with pre-separation gas and exports, and pre-separation gas outlet is connected to ceramic tube filter.
The ceramic tube filter includes ceramic film filtering element, cylinder, line pulse injection system and automatically controls
System, the ceramic film filtering element are placed in cylinder, and the line pulse injection system is connected with automatic control system
Ceramic film filtering element, the cylinder body bottom are connected to melting furnace, and top is exported equipped with clean gas.Will filtering, regeneration and
It automatically controls and combines together.Using micropore ceramics membrane tube as filter element, there is high temperature resistant, the characteristic of low pressure drop, high intensity.
The line pulse injection system and automatic control system include gas bag, electromagnetic impulse valve, pulse control instrument, spray
Blowpipe, electromagnetic impulse valve one terminate gas bag, another termination injection tube, and pulse control instrument controls the unlatching of electromagnetic impulse valve, described
The injection tube connection ceramic film filtering element.
When pulse control instrument sends out signal (time or the pressure that reach setting), electromagnetic impulse valve automatically turns on, right
Ceramic film filtering element carries out pulse dust cleaning, and ceramic film filtering element is made to regenerate, meanwhile, by the dust of trapping return melting furnace after
It is continuous to smelt.
The ceramic film filtering element bottom lock, open top are communicated with collection chamber, and the injection tube is in Y types point
Cloth, it is corresponding to be inserted into open-topped ceramic film filtering element.
It is sealed using high temperature asbestos rubber pad with card B at the top of the ceramic film filtering element；Cylinder uses cylinder
Vault construction, to adapt to the distinctive process conditions of metallurgy industry high-temperature flue gas.
Preferably, the ceramic tube filter can trap 0.5 μm or more in flue gas of fine dust.
The technique that the dust recycling in metallurgy industry high-temperature flue gas is carried out using above-mentioned apparatus, which is characterized in that by high temperature
Flue gas is passed through gravitational settling+cyclonic separation combination unit and carries out pre-separation, and the coarse granule trapped in ash bucket can return to melting furnace work
Continue to smelt for raw material；Gas after pre-separation enters ceramic tube filter and carries out smart separation, when on ceramic film filtering element
When dust reaches saturation, online ash removal is carried out with online pulse jet system and automatic control system, makes ceramic film filtering element
Regeneration, meanwhile, the fine dust of collection also returns to melting furnace as raw materials for metallurgy, and purified gas is vented through chimney.
Compared with prior art, the present invention is ingenious in design, simple in structure, at low cost, uses reliable, equipment separative efficiency
Height, it is easy to operate, gravitational settling+cyclonic separation combination unit is together in series with ceramic tube filter in a creative way, Neng Gougao
Metallic dust in effect recycling metallurgy industry high-temperature flue gas.
Description of the drawings
Fig. 1 is the dust recovery process flow chart in the metallurgy industry high-temperature flue gas of the present invention；
Fig. 2 is that gravitational settling+cyclonic separation combines the unit structural schematic diagram；
Fig. 3 is that gravitational settling+cyclonic separation combines the unit vertical view；
Figure number explanation：1- gravitational settlings+cyclonic separation combination unit；100- gravity settling chambers；101- cyclone separators；
102- partition boards；103- cards A；104- ash buckets；2- ceramic tube filters；200- cylinders；201- gas bags；202- electromagnetic impulse valves；
203- pulse control instruments；204- injection tubes；205- cards B；206- ceramic film filtering elements.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figures 1 to 3, the device for recovering powder in a kind of metallurgy industry high-temperature flue gas, including gravitational settling+whirlwind point
From combination unit 1 and ceramic tube filter 2,1 connection ceramic tube filter 2 of the gravitational settling+cyclonic separation combination unit.
Wherein gravitational settling+cyclonic separation combination unit 1 uses as pre-separation and is divided into two parts：Gravity settling chamber 100
Be built in cyclone separator 101 therein.Gravity settling chamber 100 can trap 150~200 μm or more in flue gas of coarse granule,
Cyclone separator 101 can trap 20 μm or more of dust, and the coarse granule of trapping and dust are returned to melting furnace and continue to smelt.
Ceramic tube filter 2 is the filter with pulse spraying equipment, can trap in flue gas 0.5 μm or more fine
Dust is realized fine separation, while can also be regenerated by pulse spraying equipment, when pulse control instrument 203 sends out signal (i.e.
Reach time or the pressure of setting) when, electromagnetic impulse valve 202 automatically turns on, and carries out pulse dust cleaning to it, makes ceramic tube filter
206 regeneration, meanwhile, the dust of trapping is returned into melting furnace and continues to smelt.
Specifically：
The cyclone separator 101 is the cutting with top gap flow apron suitable for metallurgy industry worst hot case
To inlet cyclones, card A103 is equipped at the top of the cyclone separator.Make particle with gas using tapered flow apron
Stream enters in cyclone body, and when becoming circumference flowing from streamlined flow, the radial separation distance of particle is gradually reduced, and is conducive to gas-solid
The separation of two-phase improves dust organic efficiency.In addition, flow apron and whirlwind top plate keep certain gap, not only resistance
It is decreased significantly, and there has also been certain raisings for separative efficiency.There is good separating property using this structure type, fit
Working condition for metallurgy industry high temperature.
Gravity settling chamber 100 does not set special space, but utilizes the limited sky around cylinder lower part cyclone separator 101
Between, it is compact-sized, save the space of whole equipment.Four pieces of partition boards 102 are set in 100 cylinder of gravity settling chamber, are in ring
Shape is uniformly distributed, wherein the two boards close to 100 import both sides of gravity settling chamber, plate a, plate d, left and right ends respectively with gravitational settling
100 inner cylinder of room and 101 outer barrel of cyclone separator are connected, and upper end is connected with 101 top card A103 of cyclone separator；Remaining
Two boards (plate b and the positions plate c are relatively low) left and right ends also respectively with outside 100 inner cylinder of gravity settling chamber and cyclone separator 101
Cylinder is connected, and upper end keeps certain distance with 101 top card A103 of cyclone separator.(as shown in figures 2-3) dust-contained airflow rushes
There is larger inertia force when to two boards a, plate d close to 100 import both sides of gravity settling chamber, most thick part particle divided
From getting off, other particles with air-flow around this two boards a, plate d, it is counter to impact on the lower two pieces of partition board b of back location, plate c,
By the effect of inertia force and centrifugal force, slightly thin particle is also separated.
The import of the gravity settling chamber 100 is high-temperature flue gas import, and 100 bottom of gravity settling chamber goes out equipped with dust
Mouthful, which is connected to melting furnace；101 bottom of cyclone separator is equipped with ash bucket 104, which is connected to
Melting furnace；The gravitational settling+1 top of cyclonic separation combination unit is equipped with pre-separation gas and exports, and pre-separation gas outlet connects
It is connected to ceramic tube filter 2.
The ceramic tube filter 2 include ceramic film filtering element 206, cylinder 200, line pulse injection system and from
Autocontrol system by filtering, is regenerated and is automatically controlled and combine together, using micropore ceramics membrane tube as ceramic film filtering element
206, there is high temperature resistant, the characteristic of low pressure drop, high intensity, ceramic film filtering element 206 to be placed in cylinder 200, described is online
Pulse jet system connects ceramic film filtering element 206 with automatic control system, and 200 bottom of cylinder is connected to fusing
Stove, top are exported equipped with clean gas.
The line pulse injection system and automatic control system include gas bag 201, electromagnetic impulse valve 202, pulse control
Instrument 203 processed, injection tube 204, electromagnetic impulse valve 202 1 terminate gas bag 201, another termination injection tube 204, pulse control instrument 203
The unlatching of electromagnetic impulse valve 202 is controlled, the injection tube 204 connects the ceramic film filtering element 206.The ceramics
206 bottom lock of film filtering element, open top are communicated with collection chamber, and the injection tube 204 is distributed in Y types, corresponding to be inserted into
In open-topped ceramic film filtering element 206.206 top of ceramic film filtering element uses high fire stons with card B205
Cotton rubber pad is close；Cylinder 200 uses cylinder vault construction, to adapt to the distinctive process conditions of metallurgy industry high-temperature flue gas.
The technique that the dust recycling in metallurgy industry high-temperature flue gas is carried out using above-mentioned apparatus, gravity is passed through by high-temperature flue gas
Sedimentation+cyclonic separation combination unit 1 carries out pre-separation, the coarse granule trapped in ash bucket 104 can return to melting furnace as raw material after
It is continuous to smelt；Gravity settling chamber 100 can trap 150~200 μm or more in flue gas of coarse granule, and cyclone separator 101 can trap 20 μ
The dust of m or more, and the coarse granule of trapping and dust are returned into melting furnace and continue to smelt.Gas after pre-separation enters ceramic tube
Filter 2 carries out smart separation, and ceramic tube filter 2 can trap 0.5 μm or more in flue gas of fine dust.When ceramic membrane filter member
When dust on part 206 reaches saturation, when pulse control instrument 203 sends out signal (time or the pressure that reach setting), electromagnetism
Pulse valve 202 automatically turns on, and the gas in gas bag 201 is sprayed by injection tube 204 in ceramic film filtering element 206, makes it again
It is raw, meanwhile, the dust of trapping is returned into melting furnace by 200 bottom of cylinder and continues to smelt, purified gas is pushed up from cylinder 200
Portion's discharge is vented through chimney.
Claims (7)
1. the device for recovering powder in a kind of metallurgy industry high-temperature flue gas, which is characterized in that including gravitational settling+cyclonic separation group
It attaches together and sets (1) and ceramic tube filter (2), the gravitational settling+cyclonic separation combination unit (1) connects ceramic tube filter
(2), high-temperature flue gas is passed through gravitational settling+cyclonic separation combination unit (1) and carries out pre-separation, and the gas after pre-separation enters ceramics
Pipe filter (2) carries out smart separation, and purified gas is vented through chimney, and the dust of recycling returns to melting furnace；
The gravitational settling+cyclonic separation combination unit (1) includes gravity settling chamber (100) and is built in whirlwind therein and divides
From device (101)；
The cyclone separator (101) is suitable for the tangential with top gap flow apron of metallurgy industry worst hot case
Inlet cyclones, cyclone separator top are equipped with card A (103)；
Four pieces of partition boards (102) are set in described gravity settling chamber (100) cylinder, it is annular in shape uniformly distributed, wherein close to gravitational settling
The two boards of room (100) import both sides, left and right ends respectively with gravity settling chamber (100) inner cylinder and cyclone separator (101)
Outer barrel is connected, and upper end is connected with card A (103) at the top of cyclone separator (101)；Remaining two boards left and right ends also respectively with
Gravity settling chamber (100) inner cylinder and cyclone separator (101) outer barrel are connected, upper end and flower at the top of cyclone separator (101)
Plate A (103) keeps certain distance.
2. the device for recovering powder in a kind of metallurgy industry high-temperature flue gas according to claim 1, which is characterized in that described
The import of gravity settling chamber (100) be high-temperature flue gas import, gravity settling chamber (100) bottom is equipped with dust outlet, the powder
Dirt outlet is connected to melting furnace；Described cyclone separator (101) bottom is equipped with ash bucket (104), which is connected to molten
Change stove；Pre-separation gas is equipped at the top of the gravitational settling+cyclonic separation combination unit (1) to export, pre-separation gas outlet connects
It is connected to ceramic tube filter (2).
3. the device for recovering powder in a kind of metallurgy industry high-temperature flue gas according to claim 1, which is characterized in that described
Ceramic tube filter (2) include ceramic film filtering element (206), cylinder (200), line pulse injection system and automatically control
System, the ceramic film filtering element (206) are placed in cylinder (200), the line pulse injection system and automatic control
System connection ceramic film filtering element (206) processed, the cylinder (200) bottom are connected to melting furnace, and top is equipped with cleaning gas
Body exports.
4. the device for recovering powder in a kind of metallurgy industry high-temperature flue gas according to claim 3, which is characterized in that described
Line pulse injection system and automatic control system include gas bag (201), electromagnetic impulse valve (202), pulse control instrument
(203), injection tube (204), electromagnetic impulse valve (202) one terminate gas bag (201), another termination injection tube (204), Pulse Width Control
Instrument (203) controls the unlatching of electromagnetic impulse valve (202), the injection tube (204) the connection ceramic film filtering element
(206)。
5. the device for recovering powder in a kind of metallurgy industry high-temperature flue gas according to claim 4, which is characterized in that described
Ceramic film filtering element (206) bottom lock, open top communicates with collection chamber, and the injection tube (204) is in Y types point
Cloth, it is corresponding to be inserted into open-topped ceramic film filtering element (206).
6. the device for recovering powder in a kind of metallurgy industry high-temperature flue gas according to claim 4, which is characterized in that described
Ceramic film filtering element (206) at the top of with card B (205) using high temperature asbestos rubber pad sealing；Cylinder (200) uses cylinder
Body vault construction.
7. any described device carries out the work of the dust recycling in metallurgy industry high-temperature flue gas in a kind of 1-6 using claim
Skill, which is characterized in that high-temperature flue gas is passed through gravitational settling+cyclonic separation combination unit (1) and carries out pre-separation, ash bucket (104)
The coarse granule of middle trapping can return to melting furnace to be continued to smelt as raw material；Gas after pre-separation enters ceramic tube filter (2)
Smart separation is carried out, when the dust on ceramic film filtering element (206) reaches saturation, with online pulse jet system and automatic control
System processed carries out online ash removal, and ceramic film filtering element (206) is made to regenerate, meanwhile, the fine dust of collection also returns to melting furnace work
For raw materials for metallurgy, purified gas is vented through chimney.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610859752.2A CN106237776B (en) | 2016-09-28 | 2016-09-28 | A kind of device for recovering powder in metallurgy industry high-temperature flue gas and technique |
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|---|---|---|---|
| CN201610859752.2A CN106237776B (en) | 2016-09-28 | 2016-09-28 | A kind of device for recovering powder in metallurgy industry high-temperature flue gas and technique |
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| CN106237776A CN106237776A (en) | 2016-12-21 |
| CN106237776B true CN106237776B (en) | 2018-08-14 |
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| GB2558240B (en) * | 2016-12-22 | 2019-02-20 | Primetals Tech Limited | A cyclonic adaptor |
| CN108330277A (en) * | 2018-02-09 | 2018-07-27 | 灵武市永宏工贸有限公司 | A kind of improved environment-friendly type zinc leaching residue technique |
| CN112316570B (en) * | 2020-10-15 | 2022-05-20 | 中国石油大学(华东) | Compact type industrial tail gas fine particle efficient removal and cooling device and method |
| CN113175826B (en) * | 2021-05-18 | 2023-09-15 | 无锡红旗除尘设备有限公司 | Flue gas purification system of continuous casting ladle turret |
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| US4411674A (en) * | 1981-06-02 | 1983-10-25 | Ohio Blow Pipe Co. | Continuous clean bag filter apparatus and method |
| JPH10204453A (en) * | 1997-01-28 | 1998-08-04 | Ishikawajima Harima Heavy Ind Co Ltd | Dust removing apparatus for coal gas |
| US8377175B2 (en) * | 2010-02-26 | 2013-02-19 | Arcelormittal Investigacion Y Desarrollo, S.L. | Apparatus and method for treating exhaust gas |
| CN202778107U (en) * | 2012-08-11 | 2013-03-13 | 圣火科技(河南)有限责任公司 | Vertical coke dry quenching one-time dust collector |
| CN103566697B (en) * | 2013-11-13 | 2016-01-20 | 湖南长重机器股份有限公司 | A kind of coal-fired PM2.5 screening and dedusting method |
| CN203886311U (en) * | 2014-06-12 | 2014-10-22 | 上海化工研究院 | Device for removing coal ash from coal bed gas |
| CN104524908B (en) * | 2014-12-05 | 2016-04-06 | 山东天力干燥股份有限公司 | A kind of film dust arrester and utilize the pyrolytic process of coal of this film dust arrester |
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