CN107036109A - Sodium dithionite produces the processing system and processing method of waste gas - Google Patents
Sodium dithionite produces the processing system and processing method of waste gas Download PDFInfo
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- CN107036109A CN107036109A CN201710257798.1A CN201710257798A CN107036109A CN 107036109 A CN107036109 A CN 107036109A CN 201710257798 A CN201710257798 A CN 201710257798A CN 107036109 A CN107036109 A CN 107036109A
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- waste gas
- regenerator
- sodium dithionite
- gas
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Classifications
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- 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
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
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- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention proposes that a kind of sodium dithionite produces the processing system of waste gas, including regenerative thermal oxidizer, back suction blower fan, chimney and chiller, regenerative thermal oxidizer includes three regenerator arranged side by side and the thermal oxidizer above regenerator, thermal storage ceramic is filled with each regenerator, the sodium dithionite production waste gas header enters each regenerator bottom by three waste gas branch roads, each regenerator bottom is also associated with waste gas scavenging pipeline, and the waste gas scavenging pipeline is connected to the sodium dithionite production waste gas header；Each regenerator is connected to chimney by flue.The present invention also provides the processing method that a kind of sodium dithionite produces waste gas.Processing system proposed by the present invention, using waste gas heat accumulation type thermal oxidation device, waste gas wherein by complicated physical-chemical reaction, makes the organic substance in waste gas thoroughly decompose destruction.Heat energy reduction energy consumption is reclaimed to greatest extent, is reduced the consumption of combustion-supporting fuel, has been saved production cost.
Description
Technical field
The invention belongs to exhaust-gas treatment field, and in particular to a kind of processing system of industrial waste gas containing sulfur dioxide and place
Reason method.
Background technology
Hydrosulfurous acid process for producing sodium is batch production, and a large amount of tail gas can be produced in process of production and (connect two sulfurous
The gas referred to as tail gas of the pickling alkali cleaning before processing produced in sour sodium production process, the gas after pickling alkali cleaning processing is referred to as giving up
Gas), and tail gas amount changes at any time with concentration, and such as at synthesis initial stage due to binder, tail is large-minded, and containing substantial amounts of nitrogen and
A small amount of methanol, mid-term mainly has methanol, sulfur dioxide, carbon dioxide, methyl formate and micro methyl mercaptan etc. to be deposited in reacting
Gas, the reaction middle and later periods is violent due to reaction, and pressure rises fast, and tail gas emptying amount is big, mainly methanol, carbon dioxide etc.
Gas, and tail gas in the drying process is mainly methanol and nitrogen.Therefore each operation list in sodium dithionite production process
The exhaust emissions amount that member superposition is produced is uneven, and change of component fluctuation is big.
The tail gas produced in existing sodium dithionite production process is washed using alcohol and reclaims methanol therein and two with alkali cleaning
The gases such as sulfur oxide, tail gas first passes around alcohol and washed, and methanol, methyl formate, sulfur dioxide in tail gas are absorbed by low-temp methanol,
Afterwards by two grades of alkali cleanings, using in liquid caustic soda and sour gas therein, such as sulfur dioxide and carbon dioxide.Nitrogen therein and
The microcomponent not being completely absorbed such as methanol, methyl mercaptan etc. are vented as waste gas.
Include in place of the deficiencies in the prior art：Though one be by alcohol wash and alkali cleaning after can absorb sodium dithionite and produced
The most of chemical constituent of tail gas in journey, but it is atomic to there is the storage such as methyl mercaptan produced in sodium dithionite production process etc.
Amount gas can not be absorbed, and the material has Low threshold pungent odour, influence surrounding enviroment.Two be that alcohol is washed in absorption process
Liquid and alkali wash water temperature and change in concentration, with the development of absorption process, absorbing liquid temperature is uprised, and at this moment absorbing liquid saturation inhales
Receive speed step-down, tail gas has part methanol and sulfur dioxide etc. to have a peculiar smell after absorbing liquid absorbs, still, excitant component not by
Absorb and be vented in air and pollute environment.Three be that hydrosulfurous acid process for producing sodium is batch production technique, was produced
Tail gas amount in journey is unbalanced, and it is excessive to easily cause short time inner exhaust gas amount, is washed by alcohol and during alkali cleaning, to absorb frequently, and by
Emptying.Four be that the substantial amounts of alcohol of need is washed and alkali cleaning to ensure that the waste gas of sodium dithionite production process meets atmospheric emission standard
Processing is needed after liquid, this part washing lotion saturation, increases liquid waste processing amount, correspondingly increases sodium dithionite production cost.
Because exhaust emissions amount is uneven, absorbing liquid has the failure time limit not judge caused by change of component fluctuation is big, and
And when absorbing liquid is to close to saturation, the absorbability to tail gas is substantially reduced, therefore easily cause absorbing liquid failure or absorb energy
Power deficiency causes the waste gas of discharge not meet atmospheric emission standard.The storage also produced in sodium dithionite production process such as first sulphur
The denier Low threshold pungent odour gas such as alcohol can not be washed by alcohol and alkali cleaning is removed, and waste gas still influences surrounding enviroment.
Therefore need to find a kind of technical method and remove methyl mercaptan in removing exhaust gas, and can handle alcohol wash and alkaline cleaning procedure in
Absorbent saturation or during close to saturation, the material such as methanol of entrained with the waste gas of discharge.At similar substance
The technology of reason has chemical oxidization method, microwave oxidizing process and plasma method etc., but for useless in sodium dithionite production process
Gas disposal is big because of fluctuation of concentration, and successful application is all not implemented.
The content of the invention
The weak point existed for this area, the purpose of the present invention is to propose to a kind of sodium dithionite production waste gas
Processing system.
Second object of the present invention is to propose that a kind of sodium dithionite produces the processing method of waste gas.
The technical scheme for realizing above-mentioned purpose of the present invention is：
A kind of sodium dithionite produces the processing system of waste gas, including regenerative thermal oxidizer, back suction blower fan, chimney and
Chiller,
The regenerative thermal oxidizer includes the thermal oxide of three regenerator arranged side by side and the insertion above regenerator
Thermal storage ceramic is filled with room, each regenerator, the sodium dithionite production waste gas header passes through three waste gas branch roads
Into each regenerator bottom, gas inlet valve is provided with the waste gas branch road；Each regenerator bottom is also associated with giving up
Waste gas purging valve and back suction blower fan are provided with gas scavenging pipeline, the waste gas scavenging pipeline, the waste gas scavenging pipeline connects
It is connected to the sodium dithionite production waste gas header；
Each regenerator is connected to the chimney by flue, and Quench is provided with the flue
Device.
Wherein, enter according to waste gas on the direction of regenerative thermal oxidizer, the sodium dithionite production waste gas header
Static mixer and spark arrester are sequentially arranged, it is total that the waste gas scavenging pipeline is connected to the sodium dithionite production waste gas
After the spark arrester of pipe.
Further, air pipe line bypass is provided with the static mixer.The bypass can be a valve or wind
Plate.
Wherein, the thermal oxidizer is provided with burner, and the burner is connected with gas pipeline and combustion-aid air pipe
Road.
Preferably, each regenerator is connected in the chimney, each flue gas bypass line by each flue gas bypass line
It is provided with fume emission valve.
The present invention also proposes that a kind of sodium dithionite produces the processing method of waste gas, using described processing system, place
Reason process is：
Sodium dithionite produces waste gas and enters the regenerative thermal oxidizer by waste gas header and waste gas branch road, first
By the regenerator, 700 ± 20 DEG C are heated to, then in thermal oxidizer, the oxidation Decomposition at 900~1000 DEG C is high
Warm flue gas carries out heat exchange with the thermal storage ceramic in regenerator, then passes through smoke stack emission.
The optimal technical scheme of the present invention is that sodium dithionite production waste gas passes through house steward and a waste gas branch road
Into a regenerator bottom, two regenerator in addition, one carries out flue gas heat exchange and discharge, and one carries out waste gas purging behaviour
Make.
Wherein, the waste gas purge operations are to be extracted out the waste gas in regenerator with back suction blower fan, deliver to hydrosulfurous acid
Sodium produces waste gas header, enters back into the regenerative thermal oxidizer internal oxidition and decomposes.
Wherein, the thermal oxidizer is passed through natural gas and combustion air to start burning, the thermal oxidizer in igniting
During oxidation gaseous effluent, when temperature is down to less than 900, then natural gas is passed through with auxiliary combustion temperature raising.
Described sodium dithionite produces the processing method of waste gas, and the flue-gas temperature in flue is monitored,
When flue-gas temperature is more than 150 DEG C, then flue gas is cooled with chiller, the cooling medium in the chiller is industry
Water.
The beneficial effects of the present invention are：
1st, sodium dithionite proposed by the present invention produces the processing system of waste gas, is filled using waste gas heat accumulation type thermal oxidation
Put, waste gas wherein by complicated physical-chemical reaction, makes the organic substance in waste gas thoroughly decompose destruction.
2nd, heat energy reduction energy consumption is reclaimed to greatest extent, is reduced the consumption of combustion-supporting fuel, has been saved production cost.
3rd, the system operating flexibility is big, and it is uneven to meet the exhausted air quantity produced in sodium dithionite production process, dense
The big operating mode of degree fluctuation.
The processing method of waste gas is produced using the sodium dithionite of the present invention, further handled in sodium dithionite
Produced under production run working condition after alcohol soda is washed, still containing the first sulphur that can not be removed and can not fully absorb in time
The waste gas of the components such as alcohol, methanol, CO is fully changed into by the carbon in waste gas, hydrogen, sulphur2、H2O、SO2Deng material, reached after processing
Mark discharge, and the fluctuation of produce load can be met, the energy is saved, production cost is reduced.
Brief description of the drawings
Fig. 1 produces the processing system sketch of waste gas for the sodium dithionite of the present invention.
In figure, 1 is burner, and 2 be air blower, and 3 be thermal oxidizer, and 401 be regenerator A, and 402 be regenerator B, 403
It is regenerator A gas inlet valves for regenerator C, 501,502 be that regenerator B gas inlets valve 502,503 is that regenerator C gives up
Gas air intake valve, 601 be regenerator A fume emission valves, and 602 be regenerator B fume emission valves, and 603 be regenerator C flue gases
Vent valves, 701 be that regenerator A waste gas purges valve, and 702 be that regenerator B waste gas purges valve, and 703 be that regenerator C waste gas blows
Valve is swept, 704 be back suction blower fan, and 8 be waste gas header, and 801 be exhaust gas fan, and 802 be static mixer, and 803 be spark arrester, 9
It is chimney for chiller, 10,1001 be detection mouth.
Embodiment
Now illustrate the present invention with following examples, but be not limited to the scope of the present invention.The hand used in embodiment
Section, unless otherwise instructed, using the conventional means in this area.
Embodiment 1：
Referring to Fig. 1, a kind of sodium dithionite produces the processing system of waste gas, including spark arrester 803, static mixer
802nd, exhaust gas fan 801, regenerative thermal oxidizer, back suction blower fan 704, chimney 10 and chiller 9,
The regenerative thermal oxidizer includes regenerator A401, regenerator B 402, tri- accumulation of heats arranged side by side of regenerator C403
Thermal storage ceramic, the sulfurous of company two are filled with the thermal oxidizer 3 of room and the insertion above regenerator, each regenerator
Sour sodium production waste gas header is entered on each regenerator bottom, the waste gas branch road by three waste gas branch roads is provided with gas inlet
Valve；Each regenerator bottom is also associated with being provided with waste gas blow down valve on waste gas scavenging pipeline, the waste gas scavenging pipeline
Door and back suction blower fan 704, the waste gas scavenging pipeline are connected to the sodium dithionite production waste gas header 8；
Each regenerator is connected to the chimney 10 by flue, and Quench is provided with the flue
Device 9.
Enter according to waste gas and sequentially set on the direction of regenerative thermal oxidizer, the sodium dithionite production waste gas header
Static mixer 802 and spark arrester 803 are equipped with, it is total that the waste gas scavenging pipeline is connected to the sodium dithionite production waste gas
After the spark arrester 803 of pipe.Air pipe line bypass is provided with static mixer 802.
Burner 1 is provided with thermal oxidizer, the burner is connected with natural gas (NG, pressure is 0.2~0.3MPa)
Pipeline and combustion air pipeline, combustion air is inputted by air blower 2.
Each regenerator is connected to the chimney by each flue gas bypass line, and the flue of chimney is provided with detection mouth
1001.Fume emission valve is provided with each flue gas bypass line.Corresponding three regenerator are respectively that regenerator A waste gas enters
Air valve 501, regenerator A fume emissions valve 601, regenerator A waste gas purging valve 701；Regenerator B gas inlet valves
502nd, regenerator B fume emissions valve 602, regenerator B waste gas purging valve 702；Regenerator C gas inlets valve 503, accumulation of heat
Room C fume emissions valve 603, regenerator C waste gas purging valve 703.
Experimental example
Using the system described in embodiment 1, the flue-gas temperature in flue is monitored by heat sensor, set
When flue-gas temperature is more than 120~190 DEG C, then flue gas is cooled with chiller, flue gas enters chimney after Quench tower cooler.
The flue gas discharged after sodium dithionite production exhaust-gas treatment samples from detection mouth 1001, is surveyed by China and detect sampling Detection.By
Consider the factors such as emission compliance situation, energy consumption, equipment working condition, it is 150 DEG C to determine flue-gas temperature controlling value.
Embodiment 2
Using the system described in embodiment 1, sodium dithionite production waste gas (WG, normal temperature and pressure) passes through waste gas header 8
Enter the regenerative thermal oxidizer with waste gas branch road, first pass around the regenerator, be heated to 700 DEG C, then in hot oxygen
Change in room 3, the oxidation Decomposition at 900~1000 DEG C, high-temperature flue gas carries out heat exchange, Ran Houtong with the thermal storage ceramic in regenerator
Cross smoke stack emission.Thermal oxidizer is passed through natural gas and combustion air to start burning, the thermal oxidizer is in burning in igniting
In exhaust process, when temperature is down to less than 900 (the indoor thermocouple monitoring temperature of thermal oxide), then it is passed through natural gas to aid in combustion
Burn temperature raising.
Sodium dithionite produces waste gas and enters a regenerator bottom, in addition two by house steward and a waste gas branch road
Regenerator, one carries out flue gas heat exchange and discharge, a progress waste gas purge operations.The waste gas purge operations are to use back suction wind
Machine 704 extracts the waste gas in regenerator out, delivers to sodium dithionite production waste gas header, enters back into the heat accumulation type thermal oxidation
Device internal oxidition is decomposed.
During normal operation, complete A rooms oxidation cycle (the I cycles of a following table) flow is as follows：Waste gas and oxygenating air
Waste gas regenerative thermal oxidizer is sent into through spark arrester by exhaust gas fan after being sufficiently mixed in static mixer, accumulation of heat is first turned on
Room A exhaust gas inlets valve 501, waste gas is preheated to 700 DEG C or so in regenerator A, and the waste gas after preheating enters thermal oxidizer
Oxidation Decomposition, contained organic matter is fully oxidized in the presence of combustion-supporting fuel, in waste gas decomposes, and oxidizing temperature is maintained 900
~1000 DEG C, the high-temperature flue gas of generation enters regenerator B, and high-temperature flue gas is reclaimed after heat energy cooling with thermal storage ceramic heat exchange, through storing
Hot cell B exhanst gas outlets valve 602 enter flue gas house steward, from smoke stack emission to air in, realize qualified discharge.B rooms cycle and C
The room cycle equally operates its valve, and three regenerator are as follows in the valve opening and closing control of different cycles：
Three cycles circulate progress successively.Waste gas exits and entrances valve is opened simultaneously, but purging valve is set according to equipment, is passed through
Opened after a period of time.
In the processing procedure of waste gas, the flue-gas temperature in flue is monitored by heat sensor, when flue gas temperature
When degree is more than 150 DEG C, then flue gas is cooled with chiller, the cooling medium in the chiller is industry water (PW).
The exhausted air quantity about 13000Nm that sodium dithionite production need to be handled3/ h, wherein methanol content 6000~
12000mg/m3, 16.8~382mg/m of methanthiol3, other are nitrogen, carbon dioxide, trace sulfur dioxide, a small amount of moisture,
It is hardly oxygen-containing.According to provided exhaust gas constituents content, waste gas, which enters the air for needing supplement enough before heat accumulating type oxidator, (ensures oxygen
Change dry flue gas oxygen content after decomposing to reach 5%) to ensure that organic matter is changed into CO in waste gas2、H2The innocuous substances such as O, fume emission
Temperature is less than 150 DEG C.Heat accumulation type thermal oxidation unit capacity can meet the range of load fluctuation of exhaust-gas treatment amount 40%~110%.
The flue gas of discharge is surveyed through China and detects sampling Detection, presses《Emission standard for odor pollutants》(GB14554-1993) and
GB16297-1996《Atmosphere pollution Comprehensive Control standard》Secondary discharge standard, reaches waste gas emission standard.It is specific to provide
Several groups of following technological parameters：
Table 1：Testing result after exhaust-gas treatment
The method of the present invention, has handled the process alcohol soda produced under sodium dithionite production run working condition and has washed
Afterwards, the waste gas still containing components such as the methyl mercaptans, methanol that can not be removed and can not fully absorb in time, by the carbon in waste gas, hydrogen,
Sulphur is fully changed into CO2、H2O、SO2Deng material, the qualified discharge after processing, and the fluctuation of produce load can be met, save energy
Source, reduces production cost.
Embodiment above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row is limited, on the premise of design spirit of the present invention is not departed from, technical side of this area ordinary skill technical staff to the present invention
In all variations and modifications that case is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (10)
1. a kind of sodium dithionite produces the processing system of waste gas, it is characterised in that including regenerative thermal oxidizer, back suction wind
Machine, chimney and chiller,
The regenerative thermal oxidizer includes three regenerator arranged side by side and the thermal oxidizer of the insertion above regenerator, often
Thermal storage ceramic is filled with individual regenerator, the sodium dithionite production waste gas header enters each by three waste gas branch roads
Gas inlet valve is provided with regenerator bottom, the waste gas branch road；Each regenerator bottom is also associated with waste gas purging
Waste gas purging valve and back suction blower fan are provided with pipeline, the waste gas scavenging pipeline, the waste gas scavenging pipeline is connected to institute
State sodium dithionite production waste gas header；
Each regenerator is connected to the chimney by flue, and chiller is provided with the flue.
2. sodium dithionite according to claim 1 produces the processing system of waste gas, it is characterised in that enter according to waste gas
Enter and be sequentially arranged static mixer and resistance on the direction of regenerative thermal oxidizer, the sodium dithionite production waste gas header
Firearm, the waste gas scavenging pipeline is connected to after the spark arrester of the sodium dithionite production waste gas header.
3. sodium dithionite according to claim 2 produces the processing system of waste gas, it is characterised in that described static mixed
Air pipe line bypass is provided with clutch.
4. the sodium dithionite according to any one of claims 1 to 3 produces the processing system of waste gas, it is characterised in that
The thermal oxidizer is provided with burner, and the burner is connected with gas pipeline and combustion air pipeline.
5. the processing system of waste gas is produced according to the sodium dithionite described in any one of claims 1 to 3, it is characterised in that institute
State each regenerator and be connected to by each flue gas bypass line in the chimney, each flue gas bypass line and be provided with fume emission valve
Door.
6. a kind of sodium dithionite produces the processing method of waste gas, it is characterised in that using any one of Claims 1 to 5 institute
The processing system stated, processing procedure is：
Sodium dithionite produces waste gas and enters the regenerative thermal oxidizer by waste gas header and waste gas branch road, first passes around
The regenerator, 700 ± 20 DEG C are heated to, then in thermal oxidizer, the oxidation Decomposition at 900~1000 DEG C, high temperature cigarette
Gas carries out heat exchange with the thermal storage ceramic in regenerator, then passes through smoke stack emission.
7. sodium dithionite according to claim 6 produces the processing method of waste gas, it is characterised in that hydrosulfurous acid
Sodium produces waste gas and enters a regenerator bottom by house steward and a waste gas branch road, in addition two regenerator, a progress cigarette
Gas is exchanged heat and discharged, a progress waste gas purge operations.
8. sodium dithionite according to claim 7 produces the processing method of waste gas, it is characterised in that the waste gas blows
It is to be extracted out the waste gas in regenerator with back suction blower fan to sweep operation, delivers to sodium dithionite production waste gas header, enters back into institute
State the decomposition of regenerative thermal oxidizer internal oxidition.
9. the sodium dithionite according to any one of claim 6~8 produces the processing method of waste gas, it is characterised in that
The thermal oxidizer is passed through natural gas and combustion air to start burning, the thermal oxidizer is in oxidation gaseous effluent mistake in igniting
Cheng Zhong, when temperature is down to less than 900, is then passed through natural gas with auxiliary combustion temperature raising；In oxidizing process, ensured by being passed through air
Dry flue gas oxygen content reaches 5% after burning.
10. the sodium dithionite according to any one of claim 6~8 produces the processing method of waste gas, it is characterised in that
When flue-gas temperature is more than 150 DEG C, then flue gas is cooled with chiller, the cooling medium in the chiller is industry
Water.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426257A (en) * | 2018-06-12 | 2018-08-21 | 北京恩吉节能科技有限公司 | A kind of industrial waste gas burning processing system |
| CN111059550A (en) * | 2019-11-18 | 2020-04-24 | 中国寰球工程有限公司 | Three-chamber RTO waste gas treatment system |
| CN112902200A (en) * | 2021-01-28 | 2021-06-04 | 南京工大环境科技有限公司 | Heat storage incineration RTO treatment process for tail gas produced by ammonia oxidation process |
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| CN202118926U (en) * | 2011-06-20 | 2012-01-18 | 常州亚邦化学有限公司 | Heat storage type thermal oxidation device |
| CN204460236U (en) * | 2014-12-29 | 2015-07-08 | 湖南吉利汽车部件有限公司 | A kind of regenerative thermal oxidizer being provided with accumulator of improvement |
| CN204786453U (en) * | 2015-06-17 | 2015-11-18 | 天津昊宇天洁节能环保科技有限公司 | Heat accumulation formula waste gas burning equipment |
| CN106090945A (en) * | 2016-07-29 | 2016-11-09 | 北京航天动力研究所 | A kind of heat accumulating type incineration apparatus and method processing dust-laden VOC waste gas |
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