CN212492328U - Process system for realizing multi-component recovery and resource utilization of flue gas - Google Patents

Process system for realizing multi-component recovery and resource utilization of flue gas Download PDF

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Publication number
CN212492328U
CN212492328U CN202021388006.8U CN202021388006U CN212492328U CN 212492328 U CN212492328 U CN 212492328U CN 202021388006 U CN202021388006 U CN 202021388006U CN 212492328 U CN212492328 U CN 212492328U
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flue gas
free radical
pipeline
exciter
resource utilization
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田士东
张生军
李克伦
杜秉霖
张文权
王奕晨
张红星
赵欣乔
苏长罗
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Shaanxi Coal and Chemical Technology Institute Co Ltd
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Shaanxi Coal and Chemical Technology Institute Co Ltd
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Abstract

The utility model discloses a realize that flue gas multicomponent retrieves and utilization's process systems belongs to atmospheric pollutants and administers technical field. The process system comprises a flue built-in free radical exciter, a dust remover, an absorption device and a primary membrane system; the built-in free radical exciter of the flue is arranged in the flue gas pipeline and comprises an exciter channel with a built-in heat source, and the outer surface of the exciter channel is coated with a coating containing a zeolite molecular sieve or a metal oxide modified zeolite molecular sieve; the outlet end of the flue gas pipeline is connected into the inlet of the dust remover through a pipeline, the outlet of the dust remover is connected into the inlet of the absorption device through a pipeline, and the outlet of the absorption device is connected into the flue gas outlet through a primary membrane system for trapping moisture. The utility model discloses to the getting rid of multicomponent such as oxynitride, sulphur oxide, water in the flue gas, make the flue gas reach emission standard, obtain simultaneously and contain sulphur, nitrogen by-product to recycle moisture has realized multicomponent recovery and resource utilization in the flue gas.

Description

Process system for realizing multi-component recovery and resource utilization of flue gas
Technical Field
The utility model belongs to the technical field of atmospheric pollutants administers, a realize that flue gas multicomponent retrieves and resource utilization's process systems is related to.
Background
The flue gas contains SO2、NOx、H2O and SO on, with respect to SO in flue gas2And NOxEmission control of (b) has been the focus of environmental concern. Through the development of decades, the flue gas desulfurization technology, the flue gas denitration technology and other single pollutant control technologies are applied on a large scale, and the desulfurization and denitration integrated technology is relatively slow in development. At present, the traditional FGD + SCR combined desulfurization and denitrification technology has the defects of complex system, high equipment investment and operation cost and the like, and the FGD + SNCR combined desulfurization and denitrification technology has the problems of low denitrification efficiency, serious ammonia escape and the like. Under the situation that the environmental protection standard is continuously improved, the aim is to develop a novel and efficient integrated technology for flue gas desulfurization and denitrationPrevious research hotspots in this area.
In the currently reported desulfurization and denitrification integrated technology, the oxidation-absorption technology can not only remove SO efficiently2And NOxAnd simultaneously, the recycling and utilization of the material can be realized. Due to NO in the flue gasxThe main component of (A) is NO which is difficult to dissolve in water, and the oxidation of NO into high-valence nitrogen oxide which is easy to dissolve in water is the key of the oxidation-absorption technology. The German Linde company develops the LoTO using ozone to oxidize NO as the technical corexThe technology comprises the following technological processes: spraying ozone into the low-temperature flue gas at 100-150 ℃ to oxidize NO into high valence state, and absorbing with alkali liquor to obtain high-efficiency denitration efficiency. However, oxidant cost is a bottleneck for this technology. For example, 1 ton of NO is oxidized to NO2Theoretically, 1.6 tons of ozone needs to be consumed, and the high production cost of the ozone causes the high running cost of the technology, thereby seriously restricting the popularization and the application of the technology. Relevant studies show that free radicals generated from low-cost compounds can oxidize low-concentration NO into high-valence nitrogen oxides at proper temperature, and the free radicals are ideal oxidants. However, the current technology has very strict requirements on the working condition of the flue gas due to the difficulties of short existence time of free radicals and narrow active temperature window. Therefore, the development of the oxidation-absorption technology based on efficient free radicals is expected to greatly reduce the cost for removing the smoke pollutants. Meanwhile, the smoke after oxidation-absorption treatment contains a large amount of moisture, which not only causes the phenomenon of 'white smoke', but also causes a large amount of waste of water resources, and the recycling of the moisture in the smoke has attracted great attention of people.
In summary, the SO in the flue gas is aimed at2、NOx、H2The components such as O and the like have important significance in developing an economic and efficient flue gas multi-component recycling and resource utilization technical route.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a process system for realizing multi-component recovery and resource utilization of flue gas. By using the system process, SO in multi-component components of the flue gas can be converted2And NOxIn situ oxidation-absorptionThe high-efficiency desulfurization and denitrification are realized, meanwhile, the water is recycled, and the recycling and resource utilization of multi-component substances in the flue gas are realized while the standard emission of the flue gas is realized.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
the invention discloses a process system for realizing multi-component recovery and resource utilization of flue gas, which comprises a flue built-in free radical exciter, a dust remover, an absorption device and a primary membrane system, wherein the flue built-in free radical exciter is arranged in a flue;
the built-in free radical exciter of the flue is arranged in the flue gas pipeline and comprises an exciter channel with a built-in heat source, and the outer surface of the exciter channel is coated with a coating containing a zeolite molecular sieve or a metal oxide modified zeolite molecular sieve;
the outlet end of the flue gas pipeline is connected into the inlet of the dust remover through a pipeline, the outlet of the dust remover is connected into the inlet of the absorption device through a pipeline, and the outlet of the absorption device is connected into the flue gas outlet through a primary membrane system for trapping moisture.
Preferably, the process system further comprises a secondary membrane system and a free radical source compound storage tank, the free radical source compound storage tank is connected with the flue gas pipeline through a spraying pipeline, one end of the spraying pipeline extends into the flue gas pipeline and is used for spraying the free radical source compound to the free radical exciter, and a heater is further arranged on the spraying pipeline; the outlet end leading-out pipeline of the first-stage membrane system is respectively connected with the absorption device and the second-stage membrane system, and the outlet end leading-out pipeline of the second-stage membrane system is respectively connected with the pipeline at the inlet end of the dust remover and the free radical source compound storage tank.
Preferably, an absorption liquid is arranged in the absorption device, and the absorption liquid is composed of at least one of water, hydrogen peroxide, alkaline solution and ionic liquid.
Preferably, the primary membrane system is a ceramic membrane, a hollow fiber membrane or a molecular sieve membrane, and the secondary membrane system is a pervaporation membrane, an electrodialysis membrane or a forward osmosis membrane.
Preferably, the exciter channel is made of cordierite, silicon carbide or mullite; the built-in heat source of the energizer channel comprises a heating wire or a hot fluid.
Further preferably, the hot fluid comprises hot flue gas, hot air, hot nitrogen or heat transfer oil.
Preferably, the free radical source compound storage tank contains a free radical source compound, and the free radical source compound comprises any one or more of water, hydrogen peroxide, nitric acid, alcohols and alkane compounds.
Preferably, the preheating temperature of the radical source compound is 50 to 100 ℃.
Preferably, the built-in heat source keeps the temperature of the outer surface of the exciter channel at 200-550 ℃.
Preferably, the flue gas contains SO2And NOxAny source of the component.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a realize that flue gas multicomponent retrieves and utilization's process systems. In the process system, a flue built-in free radical exciter is adopted, and a coating containing a zeolite molecular sieve or a metal oxide modified zeolite molecular sieve is coated on the surface of the flue built-in free radical exciter, SO that a free radical source compound can generate free radicals under the catalytic action of the coating on the surface of the free radical exciter, and further SO in flue gas is treated2、NOxCarrying out in-situ efficient oxidation; through setting up corresponding dust remover, absorbing device and one-level membrane system, can collect solid dust and miscellaneous salt granule in the flue gas to absorb the enrichment to high valence state sulphur, nitrogen oxide and obtain sulphur, nitrogen by-product, and retrieve moisture, realized multicomponent recovery and resource utilization in the flue gas.
Furthermore, by continuously arranging a secondary membrane system behind the primary membrane system, the recovered water can be refined and further used for supplying fresh water in the preparation process of the free radical source compound; the water obtained by the first-stage membrane system can be used as water for supplying an absorption device; therefore, the high-efficiency recovery and reasonable cyclic utilization of the water are realized.
Furthermore, the flue built-in free radical exciter is arranged in a matching way, the low-cost free radical source compound is utilized to catalyze and generate free radicals, low-valence sulfur and nitrogen oxides in the flue gas are efficiently oxidized into high-valence compounds in situ, the cost of the oxidant is greatly reduced, and the operation cost of the oxidation-absorption desulfurization and denitrification integrated technology is obviously reduced.
Further, through adopting diversified heating methods such as heating wire or hot-fluid to heat the energizer passageway, can be applicable to under the multiple concrete operating mode condition.
Furthermore, the temperature of the outer surface is maintained at 200-550 ℃ by arranging a built-in heat source, and the free radical source compound is preheated to 50-100 ℃, SO that the free radicals generated by the free radical source compound can be used for treating SO in the flue gas2、NOxThe oxidation efficiency is improved, and the treatment efficiency of multi-component recycling and resource utilization of the flue gas is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a built-in free radical exciter of a flue in a process system for realizing multi-component recovery and resource utilization of flue gas;
FIG. 2 is a schematic view of the process system for realizing multi-component recycling and resource utilization of flue gas of the present invention;
fig. 3 is a technical route diagram of the utility model for realizing the multi-component recycling and resource utilization of flue gas.
Wherein: 1-flue gas; 2-flue built-in free radical exciter; 3-a dust remover; 4-an absorption device; 5-a first-stage membrane system; 6, a fan; 7-a chimney; 8-a secondary membrane system; 9-a reservoir of a compound of free radical origin; 10-a heater; 11-flue gas duct; 12-spraying a pipeline; 201-exciter channel; 202-coating.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 2, for the schematic diagram of the process system for realizing multi-component recycling and resource utilization of flue gas of the present invention, it can be known that the process system specifically includes: the device comprises a free radical exciter 2, a dust remover 3, an absorption device 4, a primary membrane system 5, a secondary membrane system 8 and a free radical source compound storage tank 9 which are arranged in a flue;
the free radical exciter 2 arranged in the flue is arranged in a flue gas pipeline 11, the outlet end of the flue gas pipeline 11 is connected to the inlet of a dust remover 3 through a pipeline, the outlet of the dust remover 3 is connected to the inlet of an absorption device 4 through a pipeline, the outlet of the absorption device 4 is connected to a chimney 7 through a primary membrane system 5, and a fan 6 is arranged between the primary membrane system 5 and the chimney 7; the free radical source compound storage tank 9 extends into the flue gas pipeline 11 through the spraying pipeline 12, the tail end of the spraying pipeline 12 faces the free radical exciter 2, the spraying pipeline 12 is further provided with a heater 10, and the heater 10 is used for preheating the free radical source compound; leading-out pipelines of the first-stage membrane system 5 are respectively connected to the absorption device 4 and the second-stage membrane system 8, and leading-out pipelines of the second-stage membrane system 8 are respectively connected to a pipeline at the inlet end of the dust remover 3 and a free radical source compound storage tank 9;
the free radical exciter 2 comprises an exciter channel 201 with a built-in heat source, a coating 202 containing a zeolite molecular sieve or a metal oxide modified zeolite molecular sieve is coated on the outer surface of the exciter channel 201, the built-in heat source enables the temperature of the outer surface of the exciter channel 201 to be maintained at 200-550 ℃, the free radical source compound is used for generating free radicals, and the flue gas 1 is introduced into the flue gas pipeline 11 and is oxidized by the free radicals.
Specifically, referring to fig. 1, a schematic diagram of a built-in flue free radical exciter in a flue gas pretreatment system of the present invention, it can be seen that the specific operation of generating free radicals by the free radical source compound is: the free radical exciter 2 with the built-in flue is arranged in the flue gas pipeline 11, a free radical source compound is preheated and then sprayed on the surface of a coating 202 containing a zeolite molecular sieve or a metal oxide modified zeolite molecular sieve, and the surface temperature of the coating 202 is 200-550 ℃. When the internal heat source of the exciter channel 201 is a hot fluid, including but not limited to hot flue gas, hot air, hot nitrogen, heat transfer oil and other hot fluids, the flow direction of the hot fluid may be the same as or opposite to the flow direction of the flue gas 1; the cavity cross section of the exciter channel 201 is in any geometrical shape such as a circle, a rectangle, a hexagon and the like.
Specifically, the exciter channel 201 is made of a single material or a composite material such as cordierite, silicon carbide, mullite and the like, which can withstand a high temperature of more than 600 ℃; the first-stage membrane system 5 is a ceramic membrane, a hollow fiber membrane, a molecular sieve membrane and the like, and the second-stage membrane system 8 is a high-concentration-rate membrane such as a pervaporation membrane, an electrodialysis membrane, a forward osmosis membrane and the like.
Specifically, the preheated radical source compound is sprayed onto the surface catalyst coating 202 of the flue built-in radical initiator by using a spray gun.
The working principle of the process system for realizing multi-component recovery and resource utilization of the flue gas is as follows:
referring to fig. 3, for the utility model discloses in realize that flue gas multicomponent retrieves and resource utilization process systems's theory of operation's technical route, including following step:
step 1, heating and preheating a free radical source compound, generating free radicals under the catalytic action of a catalyst coating on the surface of a built-in free radical exciter of a flue, contacting flue gas entering the flue with the free radicals, and oxidizing low-valence sulfur and nitrogen oxides contained in the flue gas in situ to obtain pretreated flue gas containing high-valence sulfur and nitrogen oxides;
step 2, performing dust removal treatment on the pretreated flue gas obtained in the step 1, removing solid particles in the pretreated flue gas obtained in the step 1, absorbing high-valence sulfur and nitrogen oxides in the pretreated flue gas, and performing absorption enrichment to obtain sulfur and nitrogen containing byproducts and desulfurization and denitrification flue gas;
step 3, collecting moisture (catching water) of the desulfurization and denitrification flue gas obtained in the step 2 to obtain moisture and dischargeable flue gas (purified flue gas); and in the collected water, one part of the collected water is conveyed to an absorption device to be used for absorbing water of high-valence sulfur and nitrogen oxides, and the other part of the collected water is subjected to desalination operation through a refining process to obtain strong brine and fresh water, wherein the strong brine is evaporated by utilizing the waste heat of the flue gas to obtain miscellaneous salt solid particles, and the fresh water is used for preparing a free radical source compound.
Specifically, in step 1, the radical source compound comprises any one or more of water, hydrogen peroxide, nitric acid, alcohols and alkane compounds; preheating the free radical source compound at 50-100 ℃; the flue gas contains SO2、NOxAnd the like, including but not limited to coal-fired power plant flue gas, steel sintering flue gas, coke oven flue gas and the like.
Example 1
Treating the flue gas of the coal-fired power plant, wherein the temperature of the flue gas is 300 ℃, and SO in the flue gas2The content is 2000mg/m3、NOxThe content is 350mg/m3. The free radical exciter is made of silicon carbide, the cross section of the cavity is circular, the surface of the cavity is provided with a zeolite molecular sieve coating, and hot flue gas is introduced to control the temperature of the outer surface of the cavity to be 500 ℃. The methanol solution is preheated to 50 ℃ and then sprayed on the outer surface of the free radical exciter to generate free radicals. Adopting calcium hydroxide solution as absorbent to wash flue gas, and treating SO in the flue gas2And NOxThe content is respectively lower than 35mg/m3And 50mg/m3The absorption liquid is evaporated and concentrated to obtain the by-products of calcium sulfate and calcium nitrate. And (3) recovering the water of the washed flue gas through a hollow fiber membrane, wherein the recovery rate is 46%, part of water is directly recycled for supplementing water to an absorption system, and the other part of water is treated by a pervaporation membrane and then is used for preparing a methanol solution.
Example 2
Treating the flue gas of the coal-fired power plant, wherein the temperature of the flue gas is 300 ℃, and SO in the flue gas2The content is 2000mg/m3、NOxThe content is 350mg/m3. The free radical exciter is made of cordierite, the cross section of the cavity is rectangular, the surface of the cavity is a zeolite molecular sieve coating, and hot air is introduced to control the temperature of the outer surface of the cavity to be 360 ℃. The hydrogen peroxide solution is preheated to 80 ℃ and sprayed on the outer surface of the free radical initiator to generate free radicals. Adopting hydrogen peroxide solution as absorbent to wash flue gas, and treating SO in the flue gas2And NOxThe content is respectively lower than 35mg/m3And 50mg/m3The absorption liquid is evaporated and concentrated to obtain the by-products sulfuric acid and nitric acid. And (3) recovering the water of the washed flue gas through a ceramic membrane, wherein the recovery rate is 47%, part of water is directly recycled for supplementing water of an absorption system, and the other part of water is treated by a forward osmosis membrane and then is used for preparing a hydrogen peroxide solution.
Example 3
Treating coke oven flue gas at 260 deg.C and SO2The content is 300mg/m3、NOxThe content is 1100mg/m3. The free radical exciter is made of silicon carbide, the cross section of the cavity is circular, the surface of the cavity is provided with a zeolite molecular sieve coating, and hot flue gas is introduced to control the temperature of the outer surface of the cavity to be 500 ℃. The methanol solution was preheated to 50 ℃ and sprayed on the outer surface of the radical initiator to generate radicals. Adopting ethylenediamine citric acid solution as absorbent to wash flue gas, and treating SO in the flue gas2And NOxThe content is respectively lower than 30mg/m3And 150mg/m3Reaching the special emission limit of atmospheric pollutants in the emission Standard of pollutants for coking chemical industry (GB 16171-2012), and heating and regenerating the absorption liquidThen obtaining a byproduct of high-concentration SO2And NOx. And (3) recovering the water of the washed flue gas through a molecular sieve membrane, wherein the recovery rate is 42%, part of water is directly recycled for supplementing water of an absorption system, and the other part of water is treated by an electrodialysis membrane and then is used for preparing a methanol solution.
Example 4
Treating coke oven flue gas at 260 deg.C and SO2The content is 300mg/m3、NOxThe content is 1100mg/m3. The free radical exciter is made of cordierite, the cross section of the cavity is rectangular, the surface of the cavity is a metal oxide modified zeolite molecular sieve coating, and hot air of heat conduction oil is introduced to control the temperature of the outer surface of the cavity to be 360 ℃. The hydrogen peroxide solution is preheated to 80 ℃ and sprayed on the outer surface of the free radical initiator to generate free radicals. Ammonia water solution is used as absorbent to wash flue gas, and SO in the treated flue gas2And NOxThe content is respectively lower than 30mg/m3And 150mg/m3And the special emission limit of atmospheric pollutants reaches the emission standard of pollutants for the coking chemical industry (GB 16171-2012), and the absorption liquid is evaporated and concentrated to obtain byproducts of ammonium sulfate and ammonium nitrate. And (3) recovering the water of the washed flue gas through a hollow fiber membrane, wherein the recovery rate is 45%, part of water is directly recycled for water supplement of an absorption system, and the other part of water is treated by a pervaporation membrane and then is used for preparing a hydrogen peroxide solution.
Example 5
Treating the steel sintering flue gas with the temperature of 150 ℃ and SO in the flue gas2The content is 800mg/m3、NOxThe content is 320mg/m3. The free radical exciter is made of mullite, the cross section of the cavity is hexagonal, the surface of the cavity is a metal oxide modified zeolite molecular sieve coating, and hot flue gas is introduced to control the temperature of the outer surface of the cavity to be 400 ℃. The nitric acid solution is preheated to 100 ℃ and sprayed on the outer surface of the free radical exciter to generate free radicals. Adopting calcium hydroxide solution as absorbent to wash flue gas, and treating SO in the flue gas2And NOxThe content is respectively lower than 35mg/m3And 50mg/m3The absorption liquid is evaporated and concentrated to obtain the secondary productCalcium sulfate and calcium nitrate are produced. And (3) recovering the water of the washed flue gas through a ceramic membrane, wherein the recovery rate is 43%, part of water is directly recycled for supplementing water of an absorption system, and the other part of water is treated by a forward osmosis membrane and then is used for preparing a nitric acid solution.
Example 6
Treating the steel sintering flue gas with the temperature of 150 ℃ and SO in the flue gas2The content is 800mg/m3、NOxThe content is 320mg/m3. The free radical exciter is made of cordierite, the cross section of the cavity is rectangular, the surface of the cavity is a metal oxide modified zeolite molecular sieve coating, and hot nitrogen is introduced to control the temperature of the outer surface of the cavity to be 360 ℃. The hydrogen peroxide solution is preheated to 80 ℃ and sprayed on the outer surface of the free radical initiator to generate free radicals. Adopting hydrogen peroxide solution as absorbent to wash flue gas, and treating SO in the flue gas2And NOxThe content is respectively lower than 35mg/m3And 50mg/m3The absorption liquid is evaporated and concentrated to obtain the by-products sulfuric acid and nitric acid. And (3) recovering the water of the washed flue gas through a molecular sieve membrane, wherein the recovery rate is 45%, part of water is directly recycled for supplementing water to an absorption system, and the other part of water is treated by an electrodialysis membrane and then is used for preparing a hydrogen peroxide solution.
To sum up, the utility model discloses a realize that flue gas multicomponent retrieves and utilization's process systems. A free radical exciter containing a built-in heat source and an outer surface coating is arranged in a flue to serve as a flue gas pretreatment system, and free radicals generated by a low-cost free radical source compound are used for converting SO in flue gas2、NOxAnd (3) efficient oxidation, wherein the formed high-valence compounds are absorbed by absorption liquid to realize efficient desulfurization and denitrification of the flue gas, the purified flue gas is discharged after reaching the standard after moisture is recovered by a membrane system, and the trapped moisture can be respectively recycled for water supplement of an absorption system and preparation of a free radical source compound. Compared with the prior art, the technology has obvious advancement and economy.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims (10)

1. A process system for realizing multi-component recovery and resource utilization of flue gas is characterized by comprising a flue built-in free radical exciter (2), a dust remover (3), an absorption device (4) and a primary membrane system (5);
the built-in free radical exciter (2) of the flue is arranged in the flue gas pipeline (11), the built-in free radical exciter (2) of the flue comprises an exciter channel (201) with a built-in heat source, and the outer surface of the exciter channel (201) is coated with a coating (202) containing a zeolite molecular sieve or a metal oxide modified zeolite molecular sieve;
the outlet end of the flue gas pipeline (11) is connected into the inlet of the dust remover (3) through a pipeline, the outlet of the dust remover (3) is connected into the inlet of the absorption device (4) through a pipeline, and the outlet of the absorption device (4) is connected into the flue gas outlet through a primary membrane system (5) for trapping moisture.
2. The process system for realizing the multi-component recycling and resource utilization of the flue gas according to claim 1, wherein the process system further comprises a secondary membrane system (8) and a free radical source compound storage tank (9), the free radical source compound storage tank (9) is connected with the flue gas pipeline (11) through a spraying pipeline (12), one end of the spraying pipeline (12) extends into the flue gas pipeline (11) and is used for spraying the free radical source compound to the free radical exciter (2), and a heater (10) is further arranged on the spraying pipeline (12); the outlet end leading-out pipeline of the first-stage membrane system (5) is respectively connected into the absorption device (4) and the second-stage membrane system (8), and the outlet end leading-out pipeline of the second-stage membrane system (8) is respectively connected into the pipeline at the inlet end of the dust remover (3) and the free radical source compound storage tank (9).
3. The process system for realizing multi-component recycling and resource utilization of flue gas according to claim 2, wherein the primary membrane system (5) is a ceramic membrane, a hollow fiber membrane or a molecular sieve membrane, and the secondary membrane system (8) is an infiltration gasification membrane, an electrodialysis membrane or a forward osmosis membrane.
4. The process system for realizing multi-component recycling and resource utilization of flue gas according to claim 1, wherein an absorption liquid is arranged in the absorption device (4), and the absorption liquid is at least one of water, hydrogen peroxide, alkaline solution and ionic liquid.
5. The process system for realizing multi-component recovery and resource utilization of flue gas according to claim 1, wherein the exciter channel (201) is made of cordierite, silicon carbide or mullite; the built-in heat source of the exciter channel (201) is a heating wire or hot fluid.
6. The process system for realizing multi-component recycling and resource utilization of flue gas according to claim 5, wherein the hot fluid is hot flue gas, hot air, hot nitrogen or heat conducting oil.
7. The process system for realizing multi-component recovery and resource utilization of flue gas according to claim 1, wherein the free radical source compound storage tank (9) contains a free radical source compound, and the free radical source compound is at least one of water, hydrogen peroxide, nitric acid, alcohols and alkane compounds.
8. The process system for realizing multi-component recycling and resource utilization of flue gas according to claim 7, wherein the preheating temperature of the free radical source compound is 50-100 ℃.
9. The process system for realizing multi-component recycling and resource utilization of flue gas according to claim 1, wherein a built-in heat source keeps the temperature of the outer surface of the exciter channel (201) at 200-550 ℃.
10. The process system for realizing multi-component recycling and resource utilization of flue gas according to claim 1, wherein the flue gas contains SO2And NOxOf the componentsAny source of exhaust gas.
CN202021388006.8U 2020-07-14 2020-07-14 Process system for realizing multi-component recovery and resource utilization of flue gas Active CN212492328U (en)

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