CN109974015A - A kind of waste gas treatment process - Google Patents
A kind of waste gas treatment process Download PDFInfo
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- CN109974015A CN109974015A CN201711452671.1A CN201711452671A CN109974015A CN 109974015 A CN109974015 A CN 109974015A CN 201711452671 A CN201711452671 A CN 201711452671A CN 109974015 A CN109974015 A CN 109974015A
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- gas
- temperature
- waste
- regenerative chamber
- exhaust 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
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- 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
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
The present invention relates to a kind of waste gas treatment process, its main feature is that successively including heating to regenerative chamber；By gas distributor by the uniform infeed section regenerative chamber of exhaust gas, exhaust gas temperature is heated to the decomposition point temperature of organic matter in exhaust gas (benzene, normal butane, carbon monoxide)；It is burned thermal oxidizer is sent by the heated exhaust gas of heat storage, so that organic matter is converted into carbon dioxide and water vapour, become harmless high-temperature flue gas；A part in above-mentioned high-temperature flue gas is sent into remaining regenerative chamber to exchange heat with heat storage, makes cooling high-temperature fume and is discharged into atmosphere；Remaining high-temperature flue gas is sent into waste-heat recovery device, thermal energy is recycled, makes the cooling high-temperature fume into waste-heat recovery device, becomes the low-temperature flue gas for reaching emission request；Blowback, dedusting are carried out to each regenerative chamber in turn.Using this technique, one-time investment and operating cost can be reduced, reduces atmosphere pollution.Suitable for carrying out regenerative oxidation processing to the exhaust gas of discharge cis-anhydride production process.
Description
Technical field
The present invention relates to environmental technology field more particularly to a kind of organic waste gas treatment methods.
Background technique
At present in exhaust gas production industry, following three kinds of methods are mainly used to the processing of the exhaust gas generated in production process,
First is that water absorption method, second is that catalytic burning method, third is that heating power incineration method.Water absorption method is last procedure in maleic anhydride production
Water absorption processing is carried out to maleic anhydride waste gas, due to containing benzene in maleic anhydride waste gas, and benzene is difficult to be dissolved in the water.Therefore, this is used
Kind method handles maleic anhydride waste gas, and effect is poor.Catalytic burning method is that maleic anhydride waste gas is preheating to the ignition temperature of catalyst
Degree, exhaust gas enters catalytic reactor after preheating, makes organic matter and oxygen in maleic anhydride waste gas that oxidation occur instead in catalyst surface
It answers, organic matter is finally made to be converted into the innocuous gas such as carbon dioxide and water vapour.The innocuous gas enters waste-heat recovery device, right
Waste heat is discharged into atmosphere after being recycled again.Since catalyst is more expensive, one-time investment is big.Again due to catalytic burning temperature compared with
Low, only 500~600 DEG C, so that the temperature into waste-heat recovery device is also low, the heat of recycling is also few.In addition, due to useless
The elements such as halogen, sulphur, phosphorus are higher in gas, and these elements are to the toxic effect of catalyst, so that the service life of catalyst is not
It grows, therefore often more catalyst changeout, operating cost are higher for need.Heating power burning is sent into after maleic anhydride waste gas to be preheating to certain temperature
Heating power incinerator makes the incineration temperature of maleic anhydride waste gas reach 800 DEG C or more, exhaust gas by the combustion-supporting burning of the fuel such as natural gas
Middle organic matter complete oxidation decomposes, and is sent into waste-heat recovery device by burning the flue gas generated, is discharged into again after carrying out thermal energy recycling
Atmosphere.The fuel needed in this way is more, for handling 20,000 tons of normal butane maleic anhydride waste gas, needs consumption day per hour
More than 1600 cubic meter of right gas, therefore operating cost is higher.
In addition, due to heating by the exhaust gases device, burned waste gas device, flue gas in catalytic burning technique and heating power burning process
Cooling device is completed by individual equipment respectively, and by connecting compared with multi-pipeline between equipment, installation area is big.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of waste gas treatment process.Using this technique, disposable throwing can be reduced
Money and operating cost reduce atmosphere pollution.
To solve the above problems, taking following technical scheme:
Processing process of maleic anhydride waste gas feature of the invention be successively the following steps are included:
(1) it gets regenerative chamber ready, and regenerative chamber is heated to operating status；Wherein, there is heat storage in regenerative chamber；
(2) be 35-40 DEG C by temperature by gas distributor, the uniform infeed section of exhaust gas of pressure 4000-12000Pa stores
Hot cell is absorbed the heat that heat storage in regenerative chamber stores by exhaust gas, and exhaust gas temperature is heated to the (benzene, just of organic matter in exhaust gas
Butane, carbon monoxide) 600-700 DEG C of decomposition point temperature or more；
(3) thermal oxidizer that temperature is 800-900 DEG C will be sent by the heated maleic anhydride waste gas of heat storage burn 1-1.2s,
Make the organic matter in exhaust gas that oxidative decomposition occur, so that organic matter is converted into carbon dioxide and water vapour, become harmless height
Warm flue gas；
(4) a part in above-mentioned high-temperature flue gas is sent into remaining part regenerative chamber, carries out high-temperature flue gas and heat storage
Heat exchange, makes high-temperature flue-gas be down to 80-100 DEG C and is discharged into atmosphere by chimney；Remaining high-temperature flue gas is sent into waste heat to return
Receiving apparatus recycles thermal energy, so that the high-temperature flue-gas into waste-heat recovery device is down to 130-160 DEG C, becomes and reach
The low-temperature flue gas of emission request；
(5) at the same time, one of regenerative chamber air inlet/outlet is closed in turn, the part low temperature come out with waste-heat recovery device
Flue gas carries out blowback to the regenerative chamber, removes exhaust gas and flue dust remaining in regenerative chamber；Waste-heat recovery device is come out simultaneously
Remaining flue gas is discharged into atmosphere by chimney.
Using the above scheme, it has the advantage that
Since by the present invention in that exhaust gas is directly contacted with the indoor heat storage of accumulation of heat exchanges heat, heat exchange efficiency is up to 85-
90%, heating by the exhaust gases can be burned to after 550-600 DEG C, being sent into thermal oxidizer, use seldom fuel, that is, reachable in this way
To the purpose of complete waste gas from incinerator, operating cost is lower.
Again since by the present invention in that exhaust gas is directly contacted with the indoor heat storage of accumulation of heat exchanges heat, heat exchange efficiency is up to
85-90% can be burned heating by the exhaust gases to after 600-700 DEG C, being sent into thermal oxidizer.Heat storage therein is ceramic system
Product, price is lower and service life is longer, compared with catalytic burning technique, is not required to catalyst, to greatly reduce disposable
Investment.
In addition, since method of the invention is the incinerator that multiple regenerative chambers are arranged in a compartment, thus by exhaust gas
Preheating device, burned waste gas device, smoke temperature reducer are integrated in one, and reduce the facilities such as exhaust gas, flue, rationally utilize
Space, installation area are smaller.
The present invention will be further described with reference to embodiments for specific embodiment:
Embodiment one
Ten regenerative chambers are first got out, and regenerative chamber is heated to operating status.Heat storage is mounted in ten regenerative chambers.Institute
Stating heat storage is ceramic, is evenly equipped with vertical hole thereon, to make heat storage form honeycomb.
Later, be 30 DEG C by temperature by gas distributor, the exhaust gas of pressure 11000Pa is uniformly sent into five accumulation of heats
Room, the heat stored in thermal storage ceramic in five regenerative chambers is absorbed by exhaust gas, and exhaust gas temperature is heated to organic matter in exhaust gas
650 DEG C of decomposition point temperature.
Later, the thermal oxidizer that temperature is 800 DEG C will be sent by the heated exhaust gas of heat storage to burn 1 second, make exhaust gas
In organic matter occur oxidative decomposition, so that organic matter is converted into carbon dioxide and water vapour, become harmless high-temperature flue gas.
Later, a part in above-mentioned high-temperature flue gas is sent into remaining five regenerative chambers, makes high-temperature flue gas and this five
Heat storage exchanges heat, and so that high-temperature flue-gas is down to 80 DEG C and is discharged into atmosphere by chimney.By remaining another part high temperature cigarette
Pneumatic transmission enters waste-heat recovery device, is recycled by waste-heat recovery device to thermal energy, makes the high-temperature flue gas into waste-heat recovery device
Temperature is down to 150 DEG C, becomes the low-temperature flue gas for reaching emission request.
Finally, closing the inlet, outlet of a regenerative chamber in ten regenerative chambers in turn, come out with waste-heat recovery device
Part low-temperature flue gas carries out blowback to the regenerative chamber, removes exhaust gas and flue dust remaining in regenerative chamber.Meanwhile waste heat being recycled and is filled
The remaining flue gas for setting out is discharged into atmosphere by chimney.
Embodiment two
Ten regenerative chambers are first got out, and regenerative chamber is heated to operating status.Heat storage is mounted in ten regenerative chambers.It should
Heat storage is ceramic, is evenly equipped with vertical hole thereon, to make heat storage form honeycomb.
Later, be 30 DEG C by temperature by gas distributor, the exhaust gas of pressure 12000Pa is uniformly sent into five accumulation of heats
Room is absorbed the heat stored in thermal storage ceramic in five regenerative chambers by maleic anhydride waste gas, maleic anhydride waste gas temperature is heated to give up
720 DEG C of the decomposition point temperature of organic matter in gas.
Later, the thermal oxidizer that temperature is 850 DEG C will be sent by the heated exhaust gas of heat storage to burn 3 seconds, make exhaust gas
In organic matter occur oxidative decomposition, so that organic matter is converted into carbon dioxide and water vapour, become harmless high-temperature flue gas.
Later, a part in above-mentioned high-temperature flue gas is sent into remaining five regenerative chambers, makes high-temperature flue gas and heat storage
It exchanges heat, so that high-temperature flue-gas is down to 90 DEG C and atmosphere is discharged by chimney.Remaining another part high-temperature flue gas is sent into
Waste-heat recovery device recycles thermal energy by waste-heat recovery device, drops the high-temperature flue-gas into waste-heat recovery device
To 160 DEG C, become the low-temperature flue gas for reaching emission request.
Finally, closing the inlet, outlet of a regenerative chamber in ten regenerative chambers in turn, come out with waste-heat recovery device
Part low-temperature flue gas carries out blowback to the regenerative chamber, removes exhaust gas and flue dust remaining in regenerative chamber.Meanwhile waste heat being recycled and is filled
The remaining flue gas for setting out is discharged into atmosphere by chimney.
Claims (4)
1. a kind of waste gas treatment process, it is characterised in that successively the following steps are included:
(1) it gets regenerative chamber ready, and regenerative chamber is heated to operating status；Wherein, there is heat storage in regenerative chamber；
(2) be 35-40 DEG C by temperature by gas distributor, the uniform infeed section of exhaust gas of pressure 4000-12000Pa stores
Hot cell is absorbed the heat that heat storage in regenerative chamber stores by exhaust gas, and exhaust gas temperature is heated to the (benzene, just of organic matter in exhaust gas
Butane, carbon monoxide) 600-700 DEG C of decomposition point temperature or more；
(3) thermal oxidizer that temperature is 800-900 DEG C will be sent by the heated maleic anhydride waste gas of heat storage burn 1-1.2s,
Make the organic matter in exhaust gas that oxidative decomposition occur, so that organic matter is converted into carbon dioxide and water vapour, become harmless height
Warm flue gas；
(4) a part in above-mentioned high-temperature flue gas is sent into remaining part regenerative chamber, carries out high-temperature flue gas and heat storage
Heat exchange, makes high-temperature flue-gas be down to 80-100 DEG C and is discharged into atmosphere by chimney；Remaining high-temperature flue gas is sent into waste heat to return
Receiving apparatus recycles thermal energy, so that the high-temperature flue-gas into waste-heat recovery device is down to 130-160 DEG C, becomes and reach
The low-temperature flue gas of emission request；
(5) at the same time, one of regenerative chamber air inlet/outlet is closed in turn, the part low temperature come out with waste-heat recovery device
Flue gas carries out blowback to the regenerative chamber, removes exhaust gas and flue dust remaining in regenerative chamber；Waste-heat recovery device is come out simultaneously
Remaining flue gas is discharged into atmosphere by chimney.
2. the waste gas treatment process according to claim 1, it is characterised in that the regenerative chamber is no less than four.
3. the waste gas treatment process according to claim 1, it is characterised in that the regenerative chamber is ten.
4. waste gas treatment process described according to claim 1~any one of 3, it is characterised in that the heat storage is ceramics
Product is evenly equipped with vertical hole thereon, to form honeycomb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452671.1A CN109974015A (en) | 2017-12-28 | 2017-12-28 | A kind of waste gas treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452671.1A CN109974015A (en) | 2017-12-28 | 2017-12-28 | A kind of waste gas treatment process |
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| Publication Number | Publication Date |
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| CN109974015A true CN109974015A (en) | 2019-07-05 |
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| CN201711452671.1A Pending CN109974015A (en) | 2017-12-28 | 2017-12-28 | A kind of waste gas treatment process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198758A (en) * | 2021-12-06 | 2022-03-18 | 江苏瑞鼎环境工程有限公司 | Normal butane method maleic anhydride tail gas is with incineration disposal system |
-
2017
- 2017-12-28 CN CN201711452671.1A patent/CN109974015A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198758A (en) * | 2021-12-06 | 2022-03-18 | 江苏瑞鼎环境工程有限公司 | Normal butane method maleic anhydride tail gas is with incineration disposal system |
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Application publication date: 20190705 |
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| WD01 | Invention patent application deemed withdrawn after publication |