CN106975353B - A kind of tail gas processing mechanism and processing method - Google Patents

A kind of tail gas processing mechanism and processing method Download PDF

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Publication number
CN106975353B
CN106975353B CN201710334868.9A CN201710334868A CN106975353B CN 106975353 B CN106975353 B CN 106975353B CN 201710334868 A CN201710334868 A CN 201710334868A CN 106975353 B CN106975353 B CN 106975353B
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China
Prior art keywords
tail gas
filtering body
air inlet
inlet pipe
filter
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Expired - Fee Related
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CN201710334868.9A
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Chinese (zh)
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CN106975353A (en
Inventor
张国隆
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Huizhou Xinyu Environmental Protection Technology Co ltd
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Huizhou Xinyu Environmental Protection Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • B01D53/8628Processes characterised by a specific catalyst
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2407Filter candles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/508Sulfur oxides by treating the gases with solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/90Injecting reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20707Titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20723Vanadium

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a kind of tail gas processing mechanisms, including filtering body;Filter mechanism is equipped in the filtering body;The filtering body is equipped with air inlet pipe and exhaust pipe;Tail gas is entered in the filtering body by the air inlet pipe, after being filtered by the filter mechanism, is discharged by the exhaust pipe;The catalyst of catalytic exhaust is adsorbed on the filter mechanism.Therefore the tail gas of burning is entered in filtering body by air inlet pipe, by filter mechanism that powder particle filtering in tail gas is clear, and reacts to form innocuous gas discharge with the harmful substance in tail gas by catalyst.Tail gas processing mechanism, including filtering body;Filter mechanism is equipped in the filtering body;The filtering body is equipped with air inlet pipe and exhaust pipe;Tail gas is entered in the filtering body by the air inlet pipe, after being filtered by the filter mechanism, is discharged by the exhaust pipe;The catalyst of catalytic exhaust is adsorbed on the filter mechanism.

Description

A kind of tail gas processing mechanism and processing method
Technical field
The present invention relates to the field of tail gas treatment, and in particular to a kind of tail gas processing mechanism and processing method.
Background technique
Current incineration flue gas contains a large amount of particle, mostly uses water spray absorbed portion dust greatly at present, and cyclone type removes Dirt is gone out most of large dust particle, and electron ion is in processing part dust, then passes through multiple dust removal step ability such as bag-type dust Reach discharge standard, used device and operating cost are high, complex process, and waste water resource generates secondary pollution;It is lacked in view of above It falls into, it is really necessary to design a kind of trunk opening and closing device.
Summary of the invention
Technical problem to be solved by the present invention lies in: a kind of trunk opening and closing device is provided, is burnt to solve to handle at present Burning tail gas is at high cost, and technique is cumbersome, waste of resource, and can lead to the problem of secondary pollution.
In order to solve the above technical problems, the technical scheme is that a kind of tail gas processing mechanism, including filtering body; Filter mechanism is equipped in the filtering body;The filtering body is equipped with air inlet pipe and exhaust pipe;Tail gas passes through the air inlet Pipe enters in the filtering body, after being filtered by the filter mechanism, is discharged by the exhaust pipe;It is inhaled on the filter mechanism With the catalyst of conversion tail gas.
Further, the filter mechanism includes: fixed plate inside the filtering body and is set to the fixed plate On more filter core carriers;The Catalyst Adsorption is on the filter core carrier.
Further, the filter core carrier is alumina fibre high temperature filtration core;The gap of the filter core carrier is less than 0.1nm。
Further, the filter core carrier is Al2O3 fiber filament.
Further, the catalyst includes each component calculated in weight percent:
Further, the dispersion machine is polysorbate60;The duct filler is dodecyl trimethyl ammonium chloride or ten Dialkyl group trimethylammonium bromide.
Further, the back-blowing mechanism being connected with the filter mechanism outlet side is additionally provided on the filtering body;It is described The bottom end of filtering body is additionally provided with dust outlet.
Further, heating and heat-insulating device is additionally provided with inside the filtering body;The exhaust pipe is connect with heat exchanger;Through The filtered tail gas of tail gas processing mechanism enters in the heat exchanger and enters the air heat exchange in boiler.
A kind of processing tail gas method, which is characterized in that add drug in the air inlet pipe in the removal air inlet pipe Nitrogen oxides or sulfur oxide in tail gas.
Further, the drug is ammonium hydroxide, lime powder, sodium bicarbonate powder, calcium hydroxide powder, limewash, salt Any one of water and urea.
Compared with prior art, the tail gas processing mechanism, including filtering body;Filter is equipped in the filtering body Structure;The filtering body is equipped with air inlet pipe and exhaust pipe;Tail gas is entered in the filtering body by the air inlet pipe, is passed through After the filter mechanism filtering, it is discharged by the exhaust pipe;The catalyst of catalytic exhaust is adsorbed on the filter mechanism.Therefore The tail gas of burning is entered in filtering body by air inlet pipe, by filter mechanism that powder particle filtering in tail gas is clear, and is led to Catalyst is crossed to react to form innocuous gas discharge with the harmful substance in tail gas.Tail gas processing mechanism, including filtering body;It is described Filter mechanism is equipped in filtering body;The filtering body is equipped with air inlet pipe and exhaust pipe;Tail gas by the air inlet pipe into Enter in the filtering body, after being filtered by the filter mechanism, is discharged by the exhaust pipe;It is adsorbed on the filter mechanism The catalyst of catalytic exhaust.Therefore instead of traditional mechanism complexity, the tail gas processing mechanism of complex process is reduced costs, and is saved About resource, and not will cause secondary pollution.
Detailed description of the invention
Fig. 1 is the mechanism view of tail gas processing mechanism of the present invention;
Fig. 2 is the cross-sectional view of tail gas processing mechanism of the present invention.
Specific embodiment
The following detailed description will be further explained with reference to the above drawings.
Hereinafter, a variety of specific details are elaborated, in order to provide to the saturating of the concept for constituting described embodiment basis Thorough understanding.However, it will be apparent to those skilled in the art that described embodiment can be in these no specific details In some or all situations get off practice.In other cases, well-known processing step is not specifically described.
Embodiment 1
As shown in Figs. 1-2, a kind of tail gas processing mechanism, including filtering body 1;Filter is equipped in the filtering body 1 Structure 2;The filtering body 1 is equipped with air inlet pipe 3 and exhaust pipe 4;Tail gas enters the filtering body 1 by the air inlet pipe 3 It is interior, after being filtered by the filter mechanism 2, it is discharged by the exhaust pipe 4;Catalytic exhaust is adsorbed on the filter mechanism 2 Catalyst.The catalyst, including each component calculated in weight percent.
Embodiment 2
As shown in Figs. 1-2, a kind of tail gas processing mechanism, including filtering body 1;Filter is equipped in the filtering body 1 Structure 2;The filtering body 1 is equipped with air inlet pipe 3 and exhaust pipe 4;Tail gas enters the filtering body 1 by the air inlet pipe 3 It is interior, after being filtered by the filter mechanism 2, it is discharged by the exhaust pipe 4;Catalytic exhaust is adsorbed on the filter mechanism 2 Catalyst.The catalyst, including each component calculated in weight percent:
Embodiment 3
As shown in Figs. 1-2, a kind of tail gas processing mechanism, including filtering body 1;Filter is equipped in the filtering body 1 Structure 2;The filtering body 1 is equipped with air inlet pipe 3 and exhaust pipe 4;Tail gas enters the filtering body 1 by the air inlet pipe 3 It is interior, after being filtered by the filter mechanism 2, it is discharged by the exhaust pipe 4;Catalytic exhaust is adsorbed on the filter mechanism 2 Catalyst.The catalyst, including each component calculated in weight percent:
Embodiment 4
As shown in Figs. 1-2, a kind of tail gas processing mechanism, including filtering body 1;Filter is equipped in the filtering body 1 Structure 2;The filtering body 1 is equipped with air inlet pipe 3 and exhaust pipe 4;Tail gas enters the filtering body 1 by the air inlet pipe 3 It is interior, after being filtered by the filter mechanism 2, it is discharged by the exhaust pipe 4;Catalytic exhaust is adsorbed on the filter mechanism 2 Catalyst.The catalyst, including each component calculated in weight percent:
Vanadic anhydride has strong oxidizing property, catalyst is used as in catalytic oxidation, with aromatic compound and nitrogen oxygen Compound is reacted, and titanium dioxide is carrier, and each section can be uniformly dispersed by dispersing agent point, and duct filler can be played and be led To effect, Fast Filling is on the filter core carrier 21 of alumina fibre high temperature filtration core.It therefore, can be by the harmful substance in tail gas It dispels.Wherein, catalyst is circulated into filter core carrier 21 in solution state by liquid filling mechanism by catalyst, so that catalysis Agent is adsorbed on filter core carrier 21, using high-temperature baking, so that catalyst can securely be adsorbed on filter core carrier 21.
Therefore the tail gas of burning is entered in filtering body by air inlet pipe, by filter mechanism 2 by powder particle in tail gas It filters clear, and reacts with the harmful substance in tail gas to form innocuous gas discharge by catalyst.Therefore instead of traditional machine Structure is complicated, and the tail gas processing mechanism of complex process reduces costs, and has saved resource, and not will cause secondary pollution.
Further, the filter mechanism 2 includes: fixed plate 20 inside the filtering body 1 and is set to described solid More filter core carriers 21 on fixed board 20;The Catalyst Adsorption is on the filter core carrier 21.
Further, the filter core carrier 21 is alumina fibre high temperature filtration core;The gap of the filter core carrier is less than 0.1nm.It can stop the above suspended particulates of partial size PM1.0, removal efficiency is up to 99%, and up to 99.9%, exhaust contains collection efficiency Amount is less than 3mg/m3, and overall cost is low.Wherein, filter core carrier 21: being to be mixed using the Al2O3 of flocculence with colloidal solution Uniformly, the substance that colloid is uniformly mixed with Al2O3 is transported in mold by constant displacement pump, using vacuum inhale so that be uniformly mixed Substance is formed in mold, and is inhaled by vacuum, so that forming the gap for being less than 0.1nm between filter core carrier 21.
Further, the filter core carrier 21 is Al2O3 fiber filament.Therefore it is able to achieve high temperature resistant.
Further, the dispersion machine is polysorbate60;The duct filler is dodecyl trimethyl ammonium chloride or ten Dialkyl group trimethylammonium bromide.
Further, the back-blowing mechanism 5 being connected with 2 outlet side of filter mechanism is additionally provided on the filtering body 1;Institute The bottom end for stating filtering body 1 is additionally provided with dust outlet 6.Therefore, when the dust absorption on 21 on filter core carrier is excessive, blowback Mechanism 5 is blown into high pressure gas into filtering body 1, so as to which the dust being adsorbed on filtration supports 21 is blown off dust discharge In mouth 6.Back-blowing mechanism 5 is high-pressure pump and solenoid valve, and when needing blowback, solenoid valve is opened, and high-pressure pump is by high pressure gas It is blown into filtering body 1.
Further, heating and heat-insulating device 10 is additionally provided with inside the filtering body 1.Guarantee tail by heating and heat-insulating device 10 The catalytic temperature of gas.
A kind of processing tail gas method adds drug to the nitrogen in the air inlet pipe 3 in removal 3 inner exhaust gas of air inlet pipe Oxide or sulfur oxide.
Further, the drug is ammonium hydroxide or urea;Ammonium hydroxide is injected in air inlet pipe by chemicals dosing plant with mist.Dosing dress Setting 7 includes: liquid medicine barrel 70, high-pressure pump 71 and atomizer 72;The high-pressure pump 71 is by the ammonium hydroxide or urine in the liquid medicine barrel 70 Element is sprayed into the air inlet pipe 3 by the atomizer with mist;To which ammonia is formed with nitrogen oxides and catalyst reaction Nitrogen;The inlet end of the air inlet pipe 3 is additionally provided with heating device.When exhaust temperature is not high, heating device can play ammonium hydroxide Heating atomization effect.
Further, the drug be lime powder, sodium bicarbonate powder, drug described in calcium hydroxide powder be ammonium hydroxide, Any one of lime powder, sodium bicarbonate powder, calcium hydroxide powder, limewash and salt water.Therefore desulfurization can be realized.
Further, the exhaust pipe 4 is connect with heat exchanger 8;Enter through the filtered tail gas of the tail gas processing mechanism The heat exchanger 8 is interior and enters the air heat exchange in boiler 9.It is not only able to achieve and cools to tail gas, and can also be real Existing recuperation of heat, improves heat recovery rate.
The present invention is not limited to above-mentioned specific embodiment, those skilled in the art from the above idea, Without creative labor, the various transformation made are within the scope of the present invention.

Claims (6)

1. a kind of tail gas processing mechanism, including filtering body;Filter mechanism is equipped in the filtering body;On the filtering body Equipped with air inlet pipe and exhaust pipe;Tail gas is entered in the filtering body by the air inlet pipe, is filtered by the filter mechanism Afterwards, it is discharged by the exhaust pipe;It is characterized by: being adsorbed with the catalyst of conversion tail gas on the filter mechanism;The filtering Mechanism includes: the fixed plate inside the filtering body and the more filter core carriers in the fixed plate;It is described to urge Agent is adsorbed on the filter core carrier;The filter core carrier is alumina fibre high temperature filtration core;Between the filter core carrier Gap is less than 0.1nm;The filter core carrier is Al2O3Fiber filament;The catalyst includes each component calculated in weight percent:
2. tail gas processing mechanism as described in claim 1, which is characterized in that the dispersing agent is polysorbate60;The duct is filled out Filling agent is dodecyl trimethyl ammonium chloride or dodecyl trimethyl ammonium bromide.
3. tail gas processing mechanism as claimed in claim 2, which is characterized in that be additionally provided on the filtering body and the filtering The back-blowing mechanism that mechanism outlet side is connected;The bottom end of the filtering body is additionally provided with dust outlet.
4. tail gas processing mechanism as claimed in claim 3, which is characterized in that be additionally provided with heating and thermal insulation inside the filtering body Device;The exhaust pipe is connect with heat exchanger;Enter the heat exchanger through the filtered tail gas of the tail gas processing mechanism The interior air heat exchange in entrance boiler.
5. with the processing tail gas methods of the described in any item tail gas processing mechanisms of claim 1-4, which is characterized in that by drug plus Enter into the air inlet pipe nitrogen oxides or sulfur oxide removed in the air inlet pipe inner exhaust gas.
6. processing tail gas method according to claim 5, which is characterized in that the drug is ammonium hydroxide, lime powder, carbon Any one of sour hydrogen sodium powder end, calcium hydroxide powder, limewash, salt water and urea.
CN201710334868.9A 2017-05-12 2017-05-12 A kind of tail gas processing mechanism and processing method Expired - Fee Related CN106975353B (en)

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Publication number Priority date Publication date Assignee Title
CN110339688A (en) * 2018-04-08 2019-10-18 富利康科技股份有限公司 Coke oven flue gas dust removal, desulfurization, and denitrification integrated method and equipment
CN111804077A (en) * 2020-07-14 2020-10-23 罗峰 Harmful gas processing system for metal material hot working
CN111921294B (en) * 2020-10-19 2021-01-12 山东中航天业科技有限公司 Can realize metal of SOx/NOx control dust removal integration and strain a section of thick bamboo

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039192A (en) * 1988-06-01 1990-01-31 泰森工业公司 The dry method separation method of harmful substance and implement the device of this method in the flue gas
CN106132505A (en) * 2014-03-21 2016-11-16 托普索公司 filter bag assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039192A (en) * 1988-06-01 1990-01-31 泰森工业公司 The dry method separation method of harmful substance and implement the device of this method in the flue gas
CN106132505A (en) * 2014-03-21 2016-11-16 托普索公司 filter bag assembly

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