CN101816880A - System and method for recycling maleic anhydride waste gas - Google Patents
System and method for recycling maleic anhydride waste gas Download PDFInfo
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- CN101816880A CN101816880A CN200910260138A CN200910260138A CN101816880A CN 101816880 A CN101816880 A CN 101816880A CN 200910260138 A CN200910260138 A CN 200910260138A CN 200910260138 A CN200910260138 A CN 200910260138A CN 101816880 A CN101816880 A CN 101816880A
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- 239000002912 waste gas Substances 0.000 title claims abstract description 93
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004064 recycling Methods 0.000 title abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 70
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 47
- 239000002918 waste heat Substances 0.000 claims abstract description 45
- 238000010521 absorption reaction Methods 0.000 claims abstract description 24
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000008234 soft water Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a system and a method for recycling maleic anhydride waste gas heat energy. The system comprises an absorption tower, a heat exchanger, a heater, a catalytic combustion reactor and a waste heat boiler which are connected with one another sequentially, wherein the absorption tower is used for performing benzene oxidation to produce the maleic anhydride; the heat exchanger is used for preheating maleic anhydride waste gas; the heater is used for heating the maleic anhydride waste gas to a temperature needed before catalytic combustion; the catalytic combustion reactor is used for performing catalytic combustion on the maleic anhydride waste gas; and the waste heat boiler is used for converting heat energy which is generated after the combustion of the maleic anhydride waste gas into saturated vapor. The method comprises the following steps of: conveying the maleic anhydride waste gas exhausted from the absorption tower to the heat exchanger; heating the maleic anhydride waste gas to the temperature needed before catalytic combustion; conveying the maleic anhydride waste gas into the catalytic combustion reactor to perform the catalytic combustion reaction; conveying the high-temperature gas after combustion to the waste heat boiler; conveying the gas exhausted from the waste heat boiler to the heat exchanger again; preheating the maleic anhydride waste gas to the temperature which catalytic combustion needs; and exhausting the gas into a chimney. The system and the method have the advantages of simple structure and obvious effect on recycling energy.
Description
Technical field
The present invention relates to the method that heat energy from waste gas recycling system in the Chemical Manufacture and heat energy from waste gas are recycled, and is specifically related to a kind of maleic anhydride waste gas heat energy recycle system and recoverying and utilizing method.
Background technology
Benzene contains unconverted micro-content organism, carbon monoxide and carbon dioxide in the waste gas of oxydation to produce maleic anhydride.Owing in above-mentioned waste gas, contain a certain proportion of harmful, poisonous, odorant, these waste gas are directly emitted, will cause serious harm to atmospheric environment, and in above-mentioned waste gas, also contain a large amount of combustibles.In the prior art, owing to there are not effective recycling means, or too complicated because of recycling system mechanism, it is too high and can not be implemented to recycle cost.Therefore, how to adopt simple and convenient technology and succinct recovery system cheaply, the energy in the above-mentioned maleic anhydride waste gas is effectively utilized, also can reduce the pollution of maleic anhydride waste gas to atmospheric environment simultaneously, having become those skilled in the art has technical problem to be solved.
Summary of the invention
The objective of the invention is to overcome the defective that exists in the prior art, design a kind of maleic anhydride waste gas heat energy recycle system and recoverying and utilizing method.This recycling system and recoverying and utilizing method have simple in structure, and it is remarkable to reclaim the heat effect, and the emission gases after the recycling meets national standard.
For achieving the above object, technical scheme of the present invention is the design heat exchanger that comprises the absorption tower that is used for benzene oxydation to produce maleic anhydride, preheating maleic anhydride waste gas in this system, maleic anhydride waste gas is heated to the catalytic combustion reactor of heater temperature required before the catalytic combustion, catalytic combustion maleic anhydride waste gas and utilizes the waste heat boiler of maleic anhydride waste gas burning back heat energy; On described absorption tower, be provided with the exhaust outlet of maleic anhydride waste gas, described exhaust outlet is connected with first air inlet on the heat exchanger, first gas outlet on the heat exchanger is connected with the air inlet of heater, the gas outlet of heater is connected with the air inlet of catalytic combustion reactor, the gas outlet of catalytic combustion reactor is connected with the air inlet of waste heat boiler, the gas outlet of waste heat boiler is connected with second air inlet on the heat exchanger, and second gas outlet on the heat exchanger is connected with the emptying chimney on absorption tower.
Wherein, on described heat exchanger and pipeline that heater is connected, be connected in parallel to blower fan, described blower fan is used for described heat exchanger operate as normal forward direction heater and imports hot blast, is provided with electric heater unit in the described blower fan.
Wherein, near described blower fan outlet, first valve that is used to regulate the blower fan exhaust air rate is housed.
Wherein, be provided with comb in described waste heat boiler, described comb bottom sucks heat, and top is steamdrum, emits heat, and the high-temperature tail gas after the burning is gone into the bottom, and heat is derived from the top steamdrum.
Wherein, be provided with automatic pressure regulator in the outlet of described steamdrum, keep steam pressure stable, other has the inflow internally piloted valve, the gas temperature of control waste heat boiler waste gas outlet.
Wherein, in described heater, be provided with some electric heating tubes.
The present invention also provides a kind of maleic anhydride waste gas heat energy recycle method, it is characterized in that described method comprises following processing step:
S1: the maleic anhydride waste gas of discharging in the absorption tower is sent into heat exchanger, and in heat exchanger, maleic anhydride waste gas and maleic anhydride waste gas carry out heat exchange through the tail gas after burning, and described heat exchanging process is used for maleic anhydride waste gas is carried out preheating;
S2: the maleic anhydride waste gas that obtains in the S1 step sent into carry out catalyst combustion reaction in the catalytic combustion reactor, this catalyst combustion reaction process transforms into maleic anhydride waste gas the gas of heat energy and allow compliance with emission standards;
S3: the high-temperature gas that obtains in the S2 step is sent into waste heat boiler, described high-temperature gas in waste heat boiler with comb in recirculated water carry out cold and hot exchange, described high-temperature gas is heated into steam with the recirculated water in the comb;
S4: the gas of discharging from waste heat boiler in the S3 step is sent into described heat exchanger again, and described gas is with its waste heat preheating maleic anhydride waste gas, and then enters the absorption tower chimney.
Wherein, described maleic anhydride waste gas is in the removal process incipient stage, earlier hot blast and a small amount of low temperature maleic anhydride waste gas are sent into heater together by blower fan, heater is heated to before the catalytic combustion hot-air and maleic anhydride waste gas temperature required together, enter then and carry out catalyst combustion reaction in the catalytic combustion reactor, tail gas behind the catalytic combustion turns back to after the waste heat boiler heat exchange in the heat exchanger again, and after the air outlet temperature of second gas outlet in the heat exchanger reaches design temperature, described blower fan will stop blowing.
Wherein, on described blower fan and pipeline that described heater is connected, first valve is housed, on described heat exchanger and pipeline that described absorption tower is connected, second valve and the 3rd valve is housed; Open fully at the incipient stage first of maleic anhydride waste gas heat energy recycle process valve, second valve and the 3rd valve open less, along with the air outlet temperature of heat exchanger second gas outlet raises gradually, first valve is closed gradually until closing fully, simultaneously second valve and the 3rd valve are opened gradually until opening fully.
Advantage of the present invention and beneficial effect are: because this maleic anhydride waste gas heat energy recycle system and recoverying and utilizing method, just utilize equipment such as heat exchanger, heater, catalytic combustion reactor, just the energy in the waste gas that produces in the benzene oxydation to produce maleic anhydride process can be recycled, simultaneously can also make its exhaust gas discharging meet national standard, this system has simple in structure, recovery technology is simple, and it is remarkable to reclaim the heat effect.This system is a robot control system(RCS), has reliable operation, use, simple, the safe characteristics of maintenance.On-the-spot primary instruments such as the pressure in the system, flow, liquid level, all select the higher instrument of accurate reliability for use, central control room is selected the DCS computer control system for use, have to on-the-spot technical process monitor in real time, write down, show, warning and printing reports, show the function of history curve.
Description of drawings
Fig. 1 is a maleic anhydride waste gas heat energy recycle system diagram of the present invention.
Among the figure: 1, absorption tower; 2, heat exchanger; 3, heater; 4, catalytic combustion reactor; 5, waste heat boiler; 6, exhaust outlet; 7, first air inlet; 8, first gas outlet; 9, air inlet; 10, gas outlet; 11, air inlet; 12, gas outlet; 13, air inlet; 14, gas outlet; 15, second air inlet; 16, second gas outlet; 17, return-air mouth; 18, blower fan; 19, first valve; 20, comb or coil pipe; 21, arrival end; 22, heating system; 23, the port of export; 24, steamdrum; 25, the port of export; 26, pressure regulator valve; 27, second valve; 28, the 3rd valve.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
As shown in Figure 1, the concrete technical scheme of implementing of the present invention is:
A kind of maleic anhydride waste gas heat energy recycle system, comprise the absorption tower 1, the heat exchanger 2 that is used for the preheating maleic anhydride waste gas that are used for benzene oxydation to produce maleic anhydride in this system, be used for maleic anhydride waste gas be heated to temperature required (250 ℃) before the catalytic combustion heater 3, be used for the catalytic combustion reactor 4 of catalytic combustion maleic anhydride waste gas and be used to absorb the waste heat boiler 5 of maleic anhydride waste gas burning back heat energy; On described absorption tower 1, be provided with the exhaust outlet 6 of maleic anhydride waste gas, described exhaust outlet 7 is connected with first air inlet 7 on the heat exchanger 2, first gas outlet 8 on the heat exchanger 2 is connected with the air inlet 9 of heater 3, the gas outlet 10 of heater 3 is connected with the air inlet 11 of catalytic combustion reactor 4, the gas outlet 12 of catalytic combustion reactor 4 is connected with the air inlet 13 of waste heat boiler 5, the gas outlet 14 of waste heat boiler 5 is connected with second air inlet 15 on the heat exchanger 2, and second gas outlet 16 on the heat exchanger 5 is connected with the emptying chimney 17 on absorption tower 1.
On the basis of embodiment 1, the preferable technical scheme of the present invention is: on described heat exchanger 2 and pipeline that heater 3 is connected, be connected in parallel to a typhoon machine 18, described blower fan 18 is used for described heat exchanger 2 before operate as normal, that is to say in the described heat exchanger 2 and also do not feed, or fed tail gas after the maleic anhydride waste gas burning that does not reach design temperature, need import hot blast this moment in heater 3, in described blower fan 18 electric heater unit can be installed, other and embodiment 1 are identical.
On the basis of embodiment 2, the preferable technical scheme of the present invention also comprises: near 18 outlets of described blower fan first valve 19 that is used to regulate blower fan 18 exhaust air rates is housed, other and embodiment 2 are identical.
Embodiment 4
On the basis of embodiment 3, the preferable technical scheme of the present invention also comprises, is provided with comb 20 in described waste heat boiler 5, and the arrival end 21 of described comb 20 is connected with heating system 22 by the road, the port of export 23 of described comb 20 is connected with steamdrum 24, and other and embodiment 1 are identical.
On the basis of embodiment 4, preferable technical scheme of the present invention also comprises, be connected with the factory steam pipe system at the port of export 25 of described steamdrum 24, on described steamdrum 24, also be provided with pressure regulator valve 26, described pressure regulator valve 26 is used to control the soft water amount of waste heat boiler, the gas temperature of gas outlet 14 of waste gas in the control waste heat boiler 5, other and embodiment 4 are identical.
On the basis of embodiment 5, preferable technical scheme of the present invention also comprises, is provided with some electric heating tubes in described heater, and other and embodiment 1 are identical.
A kind of maleic anhydride waste gas heat energy recycle method, described method comprises following processing step:
The first step: the maleic anhydride waste gas of discharging in the absorption tower is sent into heat exchanger, and in heat exchanger, maleic anhydride waste gas and maleic anhydride waste gas carry out heat exchange through the tail gas after burning, and described heat exchanging process is used for maleic anhydride waste gas is carried out preheating;
Second goes on foot: the maleic anhydride waste gas that obtains in the first step is sent into carried out catalyst combustion reaction in the catalytic combustion reactor, this catalyst combustion reaction process transforms into maleic anhydride waste gas the gas of heat energy and allow compliance with emission standards;
The 3rd the step: the high-temperature gas that obtains in second step is sent into waste heat boiler, described high-temperature gas in waste heat boiler with comb in recirculated water carry out cold and hot exchange, described high-temperature gas is heated into steam with the recirculated water in the comb;
The 4th step: the gas of discharging from waste heat boiler in the third step is sent into described heat exchanger again, and described gas is with its waste heat preheating maleic anhydride waste gas, and then enters the absorption tower chimney.
On the basis of embodiment 7, preferable technical scheme of the present invention also comprises, described maleic anhydride waste gas is in the removal process incipient stage, earlier hot blast and a small amount of low temperature maleic anhydride waste gas are sent into heater 3 together by blower fan 18, heater 3 is heated to temperature required (300 ℃～350 ℃) before the catalytic combustion together with hot-air and maleic anhydride waste gas, enter then and carry out catalyst combustion reaction in the catalytic combustion reactor 4, tail gas behind the catalytic combustion turns back in the heat exchanger 2 after waste heat boiler 5 heat exchanges again, after the air outlet temperature of second gas outlet 16 in the heat exchanger 2 reaches design temperature (about 170 ℃), described blower fan 18 will stop blowing, and other processing step and embodiment 7 are identical.
On embodiment 7 bases, preferable technical scheme of the present invention also comprises, on described blower fan 18 and pipeline that described heater 3 is connected, first valve 19 is housed, on described heat exchanger 2 and pipeline that described absorption tower 1 is connected, second valve 27 and the 3rd valve 28 is housed; Open fully at the incipient stage first of maleic anhydride waste gas heat energy recycle process valve 19, it is less that second valve 27 and the 3rd valve 28 are opened, along with the air outlet temperature of heat exchanger 2 second gas outlets 16 raises gradually, first valve 19 is closed gradually until closing fully, simultaneously second valve 27 and the 3rd valve 28 are opened gradually until opening fully, other processing step and embodiment 7 are identical.
The technological process of maleic anhydride waste gas heat energy recycle of the present invention is:
The maleic anhydride waste gas of being discharged by absorption tower 1 is through blower fan 18, tail gas is imported heater 3 with hot-air, tail gas in heat exchanger 2 behind the catalytic combustion, after waste heat boiler 5 coolings, the maleic anhydride waste gas of discharging with absorption tower 1 carries out heat exchange, in heat exchanger 2, heater via 3 after the maleic anhydride waste gas temperature increase is entered catalytic combustion reactor 4, when the reactor outlet temperature rises about 500 ℃, enter waste heat boiler 5 and enter waste heat boiler by the deoxidation soft water that system's multistage pump provides, tail gas after deoxidation soft water and the combustion reaction carries out producing steam after the heat exchange, control the Outlet Gas Temperature (about 380 ℃) of waste heat boiler 5 by regulating the soft water flow, consequent steam input steamdrum 24, by the pressure in control regulation valve 26 steam regulation bags 24, steam more than needed feeds steam pipe system, keep the stable exhaust temperature of heat exchanger second outlet that just can keep of waste heat boiler 5 Outlet Gas Temperatures stable, catalytic combustion is normally carried out.
After adding hot-air and entering catalytic combustion reactor 4, can improve catalyst temperature, more than reaching reaction temperature required (250 ℃), the inlet gas temperature of catalytic combustion reactor 4 progressively makes a call to second valve and the 3rd valve, close first valve.After operation is normal, open waste heat boiler 5, control enters the exhaust temperature of heat exchanger, and the gas feed temperature that keeps advancing catalyst combustion reactor 4 is more than reaction is temperature required.
For guaranteeing the conversion ratio of tail gas catalyzed burning, the temperature of advancing catalytic combustion reactor 4 must remain on 250 ℃ ± 20 ℃ scopes.The temperature of reaction has just determined the catalytic combustion conversion ratio, has also influenced thermal discharge, causes catalytic combustion reactor 4 outlet temperatures to change up and down.Constant for guaranteeing the catalytic combustion reactor inlet temperature, must make that into second outlet temperature of heat exchanger (about 130 ℃) is constant, because as long as the thermal change of advancing waste heat boiler 5 is by producing the temperature that how much just can keep advancing heat exchanger 2 of quantity of steam, under the enough situation of waste heat boiler 5 heat exchange areas, the intake air temperature that the discharge that enters waste heat boiler by control system just can keep entering heat exchanger 2 is constant, just can transform fully after making maleic anhydride waste gas enter catalytic combustion reactor, operation maintains a long-term stability.The pressure control of steamdrum 24 also plays an important role to installing steady heat exchange operation.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. maleic anhydride waste gas heat energy recycle system, it is characterized in that, comprise the heat exchanger of the absorption tower that is used for benzene oxydation to produce maleic anhydride, preheating maleic anhydride waste gas in this system, maleic anhydride waste gas is heated to the catalytic combustion reactor of heater temperature required before the catalytic combustion, catalytic combustion maleic anhydride waste gas and utilizes the waste heat boiler of maleic anhydride waste gas burning back heat energy; On described absorption tower, be provided with the exhaust outlet of maleic anhydride waste gas, described exhaust outlet is connected with first air inlet on the heat exchanger, first gas outlet on the heat exchanger is connected with the air inlet of heater, the gas outlet of heater is connected with the air inlet of catalytic combustion reactor, the gas outlet of catalytic combustion reactor is connected with the air inlet of waste heat boiler, the gas outlet of waste heat boiler is connected with second air inlet on the heat exchanger, and second gas outlet on the heat exchanger is connected with the emptying chimney on absorption tower.
2. maleic anhydride waste gas heat energy recycle as claimed in claim 1 system, it is characterized in that, on described heat exchanger and pipeline that heater is connected, be connected in parallel to blower fan, described blower fan is used for described heat exchanger operate as normal forward direction heater and imports hot blast, is provided with electric heater unit in the described blower fan.
3. maleic anhydride waste gas heat energy recycle as claimed in claim 2 system is characterized in that, near described blower fan outlet first valve that is used to regulate the blower fan exhaust air rate is housed.
4. maleic anhydride waste gas heat energy recycle as claimed in claim 1 system is characterized in that, is provided with comb in described waste heat boiler, described comb bottom sucks heat, and top is steamdrum, emits heat, high-temperature tail gas after the burning is gone into the bottom, and heat is derived from the top steamdrum.
5. maleic anhydride waste gas heat energy recycle as claimed in claim 4 system is characterized in that, is provided with automatic pressure regulator in the outlet of described steamdrum, keeps steam pressure stable, and other has the inflow internally piloted valve, the gas temperature of control waste heat boiler waste gas outlet.
6. maleic anhydride waste gas heat energy recycle as claimed in claim 1 system is characterized in that, is provided with some electric heating tubes in described heater.
7. maleic anhydride waste gas heat energy recycle method is characterized in that described method comprises following processing step:
S1: the maleic anhydride waste gas of discharging in the absorption tower is sent into heat exchanger, and in heat exchanger, maleic anhydride waste gas and maleic anhydride waste gas carry out heat exchange through the tail gas after burning, and described heat exchanging process is used for maleic anhydride waste gas is carried out preheating;
S2: the maleic anhydride waste gas that obtains in the S1 step sent into carry out catalyst combustion reaction in the catalytic combustion reactor, this catalyst combustion reaction process transforms into maleic anhydride waste gas the gas of heat energy and allow compliance with emission standards;
S3: the high-temperature gas that obtains in the S2 step is sent into waste heat boiler, described high-temperature gas in waste heat boiler with comb in recirculated water carry out cold and hot exchange, described high-temperature gas is heated into steam with the recirculated water in the comb;
S4: the gas of discharging from waste heat boiler in the S3 step is sent into described heat exchanger again, and described gas is with its waste heat preheating maleic anhydride waste gas, and then enters the absorption tower chimney.
8. maleic anhydride waste gas heat energy recycle method as claimed in claim 7, it is characterized in that, described maleic anhydride waste gas is in the removal process incipient stage, earlier hot blast and a small amount of low temperature maleic anhydride waste gas are sent into heater together by blower fan, heater is heated to before the catalytic combustion hot-air and maleic anhydride waste gas temperature required together, enter then and carry out catalyst combustion reaction in the catalytic combustion reactor, tail gas behind the catalytic combustion turns back in the heat exchanger after the waste heat boiler heat exchange again, after the air outlet temperature of second gas outlet in the heat exchanger reaches design temperature, described blower fan will stop blowing.
9. maleic anhydride waste gas heat energy recycle method as claimed in claim 8, it is characterized in that, on described blower fan and pipeline that described heater is connected, first valve is housed, on described heat exchanger and pipeline that described absorption tower is connected, second valve and the 3rd valve is housed; Open fully at the incipient stage first of maleic anhydride waste gas heat energy recycle process valve, second valve and the 3rd valve open less, along with the air outlet temperature of heat exchanger second gas outlet raises gradually, first valve is closed gradually until closing fully, simultaneously second valve and the 3rd valve are opened gradually until opening fully.
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| CN200910260138A CN101816880A (en) | 2009-12-25 | 2009-12-25 | System and method for recycling maleic anhydride waste gas |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101954236A (en) * | 2010-09-05 | 2011-01-26 | 江苏金能环境科技有限公司 | Processing process of maleic anhydride waste gas |
| CN102305550A (en) * | 2011-07-26 | 2012-01-04 | 浙江省长兴精工电炉制造有限公司 | Waste gas purification apparatus for pit furnace |
| CN102626590A (en) * | 2011-07-18 | 2012-08-08 | 西南化工研究设计院 | Low-concentration organic combustible gas catalytic oxidation device and heat utilization system |
| CN104501187A (en) * | 2015-01-21 | 2015-04-08 | 德州奥深节能环保技术有限公司 | Intermittently discharged organic waste gas gathering and processing method |
| CN106287758A (en) * | 2016-06-16 | 2017-01-04 | 山东贝斯特节能技术有限公司 | A kind of low-temperature catalyzed exhaust-gas treatment of high temperature incineration utilizes system |
| CN108752297A (en) * | 2018-08-21 | 2018-11-06 | 宁波浙铁江宁化工有限公司 | Cis-butenedioic anhydride tries the recovery and processing system of reactor product |
| CN110652945A (en) * | 2019-09-23 | 2020-01-07 | 南京蓝胜环保科技有限公司 | Double-phase-change tubular heat exchange equipment and method for utilizing waste heat of chloromethane reaction |
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- 2009-12-25 CN CN200910260138A patent/CN101816880A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954236A (en) * | 2010-09-05 | 2011-01-26 | 江苏金能环境科技有限公司 | Processing process of maleic anhydride waste gas |
| CN102626590A (en) * | 2011-07-18 | 2012-08-08 | 西南化工研究设计院 | Low-concentration organic combustible gas catalytic oxidation device and heat utilization system |
| CN102626590B (en) * | 2011-07-18 | 2013-12-04 | 西南化工研究设计院 | Low-concentration organic combustible gas catalytic oxidation device and heat utilization system |
| CN102305550A (en) * | 2011-07-26 | 2012-01-04 | 浙江省长兴精工电炉制造有限公司 | Waste gas purification apparatus for pit furnace |
| CN104501187A (en) * | 2015-01-21 | 2015-04-08 | 德州奥深节能环保技术有限公司 | Intermittently discharged organic waste gas gathering and processing method |
| CN106287758B (en) * | 2016-06-16 | 2024-03-01 | 山东贝斯特节能技术有限公司 | High-temperature incineration low-temperature catalytic waste gas treatment and utilization system |
| CN106287758A (en) * | 2016-06-16 | 2017-01-04 | 山东贝斯特节能技术有限公司 | A kind of low-temperature catalyzed exhaust-gas treatment of high temperature incineration utilizes system |
| CN108752297A (en) * | 2018-08-21 | 2018-11-06 | 宁波浙铁江宁化工有限公司 | Cis-butenedioic anhydride tries the recovery and processing system of reactor product |
| CN108752297B (en) * | 2018-08-21 | 2023-10-03 | 宁波浙铁江宁化工有限公司 | Recovery processing system of maleic anhydride test reaction product |
| CN113301988A (en) * | 2019-03-15 | 2021-08-24 | 三菱动力株式会社 | Apparatus and method for processing raw material fluid |
| CN113301988B (en) * | 2019-03-15 | 2023-10-20 | 三菱重工业株式会社 | Raw material fluid processing equipment and raw material fluid processing method |
| US11939915B2 (en) | 2019-03-15 | 2024-03-26 | Mitsubishi Heavy Industries, Ltd. | Raw material fluid treatment plant and raw material fluid treatment method |
| US12497919B2 (en) | 2019-03-15 | 2025-12-16 | Mitsubishi Heavy Industries, Ltd. | Raw material fluid treatment plant and raw material fluid treatment method |
| CN110652945A (en) * | 2019-09-23 | 2020-01-07 | 南京蓝胜环保科技有限公司 | Double-phase-change tubular heat exchange equipment and method for utilizing waste heat of chloromethane reaction |
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