CN105498526A - Catalytic oxidation treatment device for off-gas generated in maleic anhydride production through benzene oxidizing method - Google Patents
Catalytic oxidation treatment device for off-gas generated in maleic anhydride production through benzene oxidizing method Download PDFInfo
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- CN105498526A CN105498526A CN201510943139.4A CN201510943139A CN105498526A CN 105498526 A CN105498526 A CN 105498526A CN 201510943139 A CN201510943139 A CN 201510943139A CN 105498526 A CN105498526 A CN 105498526A
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- reactor
- heat exchanger
- treatment device
- catalytic oxidation
- oxidation treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
Abstract
The invention relates to a catalytic oxidation treatment device for off-gas generated in maleic anhydride production through a benzene oxidizing method. The catalytic oxidation treatment device comprises a first draught fan, a second draught fan, a filter, a heat exchanger, a heater, a first reactor, a second reactor, a waste heat boiler, a condenser and a deaerator; the first draught fan is connected with the filter, the filter is gathered with an outlet pipeline of the second draught fan through a pipeline, a gathering pipeline is connected with the heat exchanger, the heat exchanger is connected with the first reactor through the heater, the first reactor is connected with the waste heat boiler, an outlet of the waste heat boiler is connected with the second reactor, an outlet of the second reactor is connected with the heat exchanger, and the condenser is arranged at an outlet of the heat exchanger. According to the catalytic oxidation treatment device, the off-gas is pretreated through the filter, so that part of condensed organic matter in the off-gas is prevented from corroding and blocking the pipelines and the equipment; through existence of the second reactor, the content of the organic matter in the off-gas is decreased again, and condensed water generated in the condenser can be industrially applied again.
Description
Technical field
The present invention relates to maleic anhydride production technical field, particularly relate to a kind of catalytic oxidation treatment device of benzene method maleic anhydride tail gas.
Background technology
Cis-butenedioic anhydride (maleic anhydride) is a kind of four important carbon platform chemicals, important organic basic chemical raw material, mainly for the production of downstream fine chemistry industry organic intermediate and specialty chemicals such as unsaturated polyester resin, fumaric acid, butanedioic acid, lube oil additive, agricultural chemicals, thermal resistant styrene resins.The low-voltage hydrogenation of cis-butenedioic anhydride esterification in recent years Isosorbide-5-Nitrae butanediol and succeeding in developing along sour Hydrogenation oxolane technology, make cis-butenedioic anhydride become the raw material of production high added value Isosorbide-5-Nitrae butanediol, oxolane and butyrolactone, the application of cis-butenedioic anhydride has had further expansion.The technology path of current maleic anhydride production is benzene oxidatoin method and n butane oxidation method, and the quality requirement of n butane oxidation method to normal butane is higher, and raw material sources are restricted, and therefore, most domestic maleic anhydride production producer adopts benzene oxidatoin law technology route.
Produce in cis-butenedioic anhydride technology in benzene oxidatoin method at present, two kinds are mainly contained for the roadmap containing VOC tail gas, one is the Physical simultaneously carrying out for the purpose of harmless treatment by the organic matter reclaimed wherein, mainly contains absorption process, absorption method, condensation method and membrane separation process; One is the chemical null method being undertaken for the purpose of harmless treatment by the organic matter eliminated wherein, comprises thermal oxidation method, catalytic oxidation etc.And at present, after the tail gas produced after preparing cis-butenedioic anhydride is absorbed by absorption tower usually, directly be discharged in air, but these tail gas absorbed through absorption tower, general pressure, at about 10KP, is still entrained with a lot of sour waters, these sour waters carried secretly away not only cause material loss, make supplies consumption increase, preparation totle drilling cost increases, and can cause very large pollution to environment.Society, China's environmental pollution is more severe, wants energy-saving and emission-reduction when government calls enterprise to produce strongly, the discharge of decreasing pollution thing, therefore, entering aerial after how making the organic matter content carried secretly in benzene method maleic anhydride tail gas be reduced to lower content again, is a urgent problem.
Summary of the invention
The object of this invention is to provide a kind of catalytic oxidation treatment device of benzene method maleic anhydride tail gas.
Technical scheme of the present invention is: a kind of catalytic oxidation treatment device of benzene method maleic anhydride tail gas, it is characterized in that: comprise the first blower fan, second blower fan, filter, heat exchanger, heater, first reactor, second reactor, waste heat boiler, condenser, degasifier, described first blower fan is connected with described filter, described filter is collected by pipeline and described second fan outlet pipeline, collect pipeline to be connected with described heat exchanger, described heat exchanger is connected with described first reactor by described heater, described first reactor is connected with described waste heat boiler, described heat boiler outlet is connected with described second reactor, described second reactor outlet is connected with described heat exchanger, described heat exchanger exit place is provided with condenser, described condenser condenses gained liquid enters described waste heat boiler by pipeline.
Further, described filter outlet pipeline is provided with a mass flowmenter, described mass flowmenter monitoring exhaust flow.
Further, described second fan outlet pipeline is provided with a valve, and described valve types is check-valves.
Further, described degasifier import connects soft water source by pipeline, and described degasifier outlet connects described waste heat boiler by pipeline.
Further, described filter is KCL high temperature high efficiency filter.
Further, described heat exchanger is the one in heat exchange of heat pipe or shell-and-tube heat exchanger.
Further, described heater is the one in steam-type heater, electric heater, combustion heater.
Beneficial effect of the present invention is:
(1) a kind of catalytic oxidation treatment device of benzene method maleic anhydride tail gas, tail gas carries out catalytic oxidation after filter advanced processing, mass flowmenter detection control flow, condensation organic matter is to the Corrosion blockage of pipeline and subsequent processing device to avoid in tail gas part, and the existence of mass flowmenter is convenient to control subsequent catalyst oxidizing process.
(2) second reactors make further catalytic oxidation to the tail gas crossed through the first reactor for treatment, make the residual part organic compound in tail gas be oxidized to water and CO further
2, greatly reduce the content of organics in discharging waste gas.
(3) existence of condenser makes the water in the waste gas after processing be condensed, and flows into waste heat boiler generation saturated vapor by the road, has the advantage that Matter Transfer uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein:
1, the first blower fan 2, second blower fan 3, filter 4, heat exchanger
5, heater 6, first reactor 7, second reactor 8, waste heat boiler
9, condenser 10, degasifier 11, mass flowmenter 12, valve
Detailed description of the invention
Below in conjunction with accompanying drawing, brief description is made to the specific embodiment of the present invention.
A kind of catalytic oxidation treatment device of benzene method maleic anhydride tail gas as shown in Figure 1, comprise the first blower fan 1, second blower fan 2, filter 3, heat exchanger 4, heater 5, first reactor 6, second reactor 7, waste heat boiler 8, condenser 9, degasifier 10, described filter 3 is KCL high temperature high efficiency filter, described heat exchanger 4 is the one in heat exchange of heat pipe or shell-and-tube heat exchanger, described heater 5 is steam-type heater, electric heater, one in combustion heater, the import of described degasifier 10 connects soft water source by pipeline, described degasifier 10 exports and connects described waste heat boiler 8 by pipeline, described second blower fan 2 export pipeline is provided with a valve 12, described valve 12 type is check-valves, described first blower fan 1 is connected with described filter 3, described filter 3 is collected by pipeline and described second blower fan 2 export pipeline, collect pipeline to be connected with described heat exchanger 4, described filter outlet pipeline is provided with a mass flowmenter 11, exhaust flow monitored by described mass flowmenter 11, described heat exchanger 4 is connected with described first reactor 6 by described heater 5, described first reactor 6 is connected with described waste heat boiler 8, described waste heat boiler 8 outlet is connected with described second reactor 7, described second reactor 7 outlet is connected with described heat exchanger 4, described heat exchanger 4 exit is provided with condenser 9, described condenser 9 condensation gained liquid enters described waste heat boiler 8 by pipeline.
Occupation mode: tail gas is after the first blower fan, enter filter to filter, the organic compound of partly condensation in removing tail gas, again after mass flowmenter detection control flow, gaseous mixture is merged into as with the air after the second blower fan, enter heat exchanger, with the waste gas heat exchange after the second reactor catalysis is oxidized, gaseous mixture after heat exchange enters heater, heater via be heated to temperature required after, enter the first reactor, gaseous mixture is after the first reactor catalysis oxidation, enter waste heat boiler, simultaneously, soft water after degasifier deoxidation and the water after condenser condenses all enter waste heat boiler and carry out heat exchange, be heated to form saturated vapor for commercial Application, from waste heat boiler, gaseous mixture out enters the second reactor, through the further catalytic oxidation of the second reactor to reach the object again reducing organic compound concentrations in tail gas, heat exchanger is entered and fresh gaseous mixture carries out heat exchange by gaseous mixture out in the second reactor, and after condenser condenses to uniform temperature, enter air.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (7)
1. the catalytic oxidation treatment device of a benzene method maleic anhydride tail gas, it is characterized in that: comprise the first blower fan, second blower fan, filter, heat exchanger, heater, first reactor, second reactor, waste heat boiler, condenser, degasifier, described first blower fan is connected with described filter, described filter is collected by pipeline and described second fan outlet pipeline, collect pipeline to be connected with described heat exchanger, described heat exchanger is connected with described first reactor by described heater, described first reactor is connected with described waste heat boiler, described heat boiler outlet is connected with described second reactor, described second reactor outlet is connected with described heat exchanger, described heat exchanger exit place is provided with condenser, described condenser condenses gained liquid enters described waste heat boiler by pipeline.
2. the catalytic oxidation treatment device of a kind of benzene method maleic anhydride tail gas according to claim 1, is characterized in that: described filter outlet pipeline is provided with a mass flowmenter, described mass flowmenter monitoring exhaust flow.
3. the catalytic oxidation treatment device of a kind of benzene method maleic anhydride tail gas according to claim 1, is characterized in that: described second fan outlet pipeline is provided with a valve, and described valve types is check-valves.
4. the catalytic oxidation treatment device of a kind of benzene method maleic anhydride tail gas according to claim 1, is characterized in that: described degasifier import connects soft water source by pipeline, and described degasifier outlet connects described waste heat boiler by pipeline.
5. the catalytic oxidation treatment device of a kind of benzene method maleic anhydride tail gas according to claim 1, is characterized in that: described filter is KCL high temperature high efficiency filter.
6. the catalytic oxidation treatment device of a kind of benzene method maleic anhydride tail gas according to claim 1, is characterized in that: described heat exchanger is the one in heat exchange of heat pipe or shell-and-tube heat exchanger.
7. the catalytic oxidation treatment device of a kind of benzene method maleic anhydride tail gas according to claim 1, is characterized in that: described heater is the one in steam-type heater, electric heater, combustion heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510943139.4A CN105498526A (en) | 2015-12-14 | 2015-12-14 | Catalytic oxidation treatment device for off-gas generated in maleic anhydride production through benzene oxidizing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510943139.4A CN105498526A (en) | 2015-12-14 | 2015-12-14 | Catalytic oxidation treatment device for off-gas generated in maleic anhydride production through benzene oxidizing method |
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| CN105498526A true CN105498526A (en) | 2016-04-20 |
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| CN201510943139.4A Pending CN105498526A (en) | 2015-12-14 | 2015-12-14 | Catalytic oxidation treatment device for off-gas generated in maleic anhydride production through benzene oxidizing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106966483A (en) * | 2017-03-29 | 2017-07-21 | 濮阳市盛源能源科技股份有限公司 | A kind of maleic anhydride method of wastewater treatment |
| CN107504505A (en) * | 2017-08-28 | 2017-12-22 | 镇江裕太防爆电加热器有限公司 | A kind of energy-saving circulating utilizes tail gas treatment device |
| CN113144886A (en) * | 2020-12-31 | 2021-07-23 | 杭州谱育科技发展有限公司 | VOCs waste gas treatment system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301580A (en) * | 2008-06-20 | 2008-11-12 | 上海东化环境工程有限公司 | Tail gas treatment process of butane method maleic anhydride device |
| CN101301578A (en) * | 2008-06-20 | 2008-11-12 | 上海东化环境工程有限公司 | Catalytic oxidation process technique of benzene method maleic anhydride device tail gas |
| CN203916457U (en) * | 2014-07-01 | 2014-11-05 | 南京国能环保工程有限公司 | A kind of organic waste gas catalytic purification apparatus |
-
2015
- 2015-12-14 CN CN201510943139.4A patent/CN105498526A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301580A (en) * | 2008-06-20 | 2008-11-12 | 上海东化环境工程有限公司 | Tail gas treatment process of butane method maleic anhydride device |
| CN101301578A (en) * | 2008-06-20 | 2008-11-12 | 上海东化环境工程有限公司 | Catalytic oxidation process technique of benzene method maleic anhydride device tail gas |
| CN203916457U (en) * | 2014-07-01 | 2014-11-05 | 南京国能环保工程有限公司 | A kind of organic waste gas catalytic purification apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106966483A (en) * | 2017-03-29 | 2017-07-21 | 濮阳市盛源能源科技股份有限公司 | A kind of maleic anhydride method of wastewater treatment |
| CN107504505A (en) * | 2017-08-28 | 2017-12-22 | 镇江裕太防爆电加热器有限公司 | A kind of energy-saving circulating utilizes tail gas treatment device |
| CN107504505B (en) * | 2017-08-28 | 2024-03-22 | 镇江裕太防爆电加热器有限公司 | Energy-saving type recycling tail gas treatment equipment |
| CN113144886A (en) * | 2020-12-31 | 2021-07-23 | 杭州谱育科技发展有限公司 | VOCs waste gas treatment system and method |
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