CN215404571U - System for utilize flue gas electrochemistry of thermal power plant to make ammonia - Google Patents
System for utilize flue gas electrochemistry of thermal power plant to make ammonia Download PDFInfo
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- CN215404571U CN215404571U CN202121186505.3U CN202121186505U CN215404571U CN 215404571 U CN215404571 U CN 215404571U CN 202121186505 U CN202121186505 U CN 202121186505U CN 215404571 U CN215404571 U CN 215404571U
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- ammonia
- flue gas
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 196
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 83
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000003546 flue gas Substances 0.000 title claims abstract description 50
- 230000005518 electrochemistry Effects 0.000 title description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 45
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 24
- 238000010248 power generation Methods 0.000 claims abstract description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- 238000000605 extraction Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 10
- 239000003792 electrolyte Substances 0.000 claims description 10
- 230000003009 desulfurizing effect Effects 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 8
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001882 dioxygen Inorganic materials 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000003487 electrochemical reaction Methods 0.000 abstract description 3
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910002518 CoFe2O4 Inorganic materials 0.000 description 1
- 238000009620 Haber process Methods 0.000 description 1
- 229910000792 Monel Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AIYUHDOJVYHVIT-UHFFFAOYSA-M caesium chloride Inorganic materials [Cl-].[Cs+] AIYUHDOJVYHVIT-UHFFFAOYSA-M 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Abstract
The utility model discloses a system for electrochemically preparing ammonia by utilizing flue gas of a thermal power plant, wherein a steam power generation system provides electric energy and partial steam for an electrochemical ammonia preparation device, the steam enters an electrolytic cell through a cathode waterproof breathable film, the flue gas becomes clean flue gas with main components of nitrogen and carbon dioxide gas after passing through a boiler system, the clean flue gas is treated by a carbon dioxide pressurizing liquefier, the carbon dioxide gas is liquefied and enters a carbon dioxide storage tank, and the rest nitrogen enters the electrolytic cell through the waterproof breathable film in an anode; the electrochemical ammonia production device generates a mixed gas of ammonia gas and oxygen gas through electrochemical reaction, and then the ammonia gas is extracted and separated through an ammonia gas pressurizing liquefier; the raw materials of the system for preparing ammonia are purified flue gas and steam pumped out from a steam turbine, can be obtained from local materials, do not need external material input and a complex separation process, realize the reutilization of nitrogen in the flue gas, and simultaneously, a required external power supply can be directly obtained from a power plant, so that the system has good synchronism with the operation of a coal-fired power plant.
Description
Technical Field
The utility model relates to an electrochemical ammonia production technology, in particular to a system for electrochemically producing ammonia by utilizing flue gas of a thermal power plant.
Background
Denitration of a thermal power plant has a great demand on ammonia, liquid ammonia is generally adopted to prepare a denitration reducing agent, the main process is that liquid ammonia is purchased from a chemical plant and transported to the power plant by a tank car, then the liquid ammonia is evaporated and gasified in an evaporator, and gaseous ammonia and dilution air are mixed and then sprayed into an SCR reactor through an ammonia nozzle. Liquid ammonia is corrosive and easy to volatilize, is easy to catch fire, and has larger safety risk in transportation and storage. At present, thermal power plants are actively researching and developing new preparation methods of denitration reducing agents, such as a urea method, an ammonia water method and the like, so as to replace liquid ammonia and reduce the operation risk of a denitration device. The electric energy generated by the power plant can be used by an electrochemical ammonia production device, so that the possibility of producing ammonia on site by adopting an electrochemical method in a thermal power plant is provided.
The traditional electrochemical ammonia production method adopts nitrogen and hydrogen as raw materials, and is difficult to obtain in situ in a thermal power plant. Mixing nano Fe2O3And CoFe2O4Suspending in LiCl-KCl-CsCl eutectic, and electrochemically synthesizing ammonia by using nitrogen and water vapor as raw materials. Suspended nano Fe with molten NaOH-KOH as electrolyte2O3Taking a nickel sheet as an anode and a Monel screen as a cathode, and taking water and nitrogen as raw materials to directly synthesize ammonia electrochemically at normal pressure. The development of the method for directly synthesizing ammonia at low temperature and normal pressure by taking water and nitrogen as raw materials has important significance.
Currently, carbon capture technologies are mainly classified into three types: pre-combustion capture, post-combustion capture and oxygen-enriched combustion capture. The capture after combustion is to separate the flue gas generated after the coal combustion to obtain carbon dioxide gas, such as a chemical absorption method, a physical adsorption method, a membrane separation method, a chemical chain separation method and the like, and essentially separates the carbon dioxide from the mixed flue gas of nitrogen, oxygen and water vapor, although the technical difficulty is not great, the cost is high, and the large-scale popularization of the carbon dioxide gas is hindered.
SUMMERY OF THE UTILITY MODEL
The utility model provides a system for electrochemically preparing ammonia by utilizing flue gas of a thermal power plant, aiming at the problem that ammonia is needed in the flue tail gas purification process of the thermal power plant in the prior art.
The utility model is realized by the following technical scheme:
a system for electrochemically producing ammonia by utilizing flue gas of a thermal power plant comprises a steam power generation system, a boiler system and an electrochemical ammonia production device; the electrochemical ammonia production device comprises an anode, a cathode, an electrolyte, a catalyst and an electrolytic cell; an anode is arranged on one side in the electrolytic cell, and a cathode is arranged on the other side; electrolyte and catalyst are arranged in the electrolytic cell; a mixed gas outlet is arranged at the top of the electrolytic cell; the mixed gas outlet is connected with an ammonia gas pressurizing liquefier, and the ammonia gas output end of the pressurizing liquefier is connected with the input end of an ammonia storage tank; the output end of the ammonia storage tank is connected with an SCR reactor of the boiler system;
a clean flue gas outlet of the boiler system is connected with a carbon dioxide pressurizing liquefier and is connected to the anode; the steam power generation system is provided with working steam by a boiler system; a steam extraction pipeline is arranged on the steam power generation system, and the output end of the steam extraction pipeline is connected to the cathode; and the power transmission end of the steam power generation system is respectively connected with the anode and the cathode for power supply through power transmission lines.
Further, the steam power generation system comprises a superheater, a steam turbine and a generator, wherein the superheater is arranged in the boiler flue and is sequentially connected with the steam turbine and the generator outside the boiler; the steam turbine is provided with a steam extraction pipeline, and the generator is provided with the output of power transmission line.
Further, boiler system is including connecting in proper order in SCR reactor, air heater, electrostatic precipitator and the desulfurizing tower of flue, and the clean flue gas discharge passage of desulfurizing tower is provided with carbon dioxide pressurization liquefier.
Further, the output end of the carbon dioxide pressurizing liquefier is connected with a carbon dioxide storage tank.
Furthermore, the anode is made of nickel, and the cathode is made of stainless steel.
Further, the electrolyte is NaOH-KOH mixed solution, and the catalyst adopts Fe2O3And (3) powder.
Furthermore, waterproof breathable films are arranged between the anode and the cathode, and plate-type electrodes with through holes are wrapped on the two sides of the anode and the cathode and are respectively used as the side walls of the electrolytic cell.
Furthermore, the outer side wall of the anode is communicated with a gas channel of the carbon dioxide pressurizing liquefier to be connected with nitrogen, and a steam extraction pipeline communicated with the outer side wall of the cathode is connected with steam.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model provides a system for electrochemically producing ammonia by utilizing flue gas of a thermal power plant, which comprises a steam power generation system, a boiler system and an electrochemical ammonia production device built outside a boiler. The steam power generation system provides electric energy and water vapor for the electrochemical ammonia production device; flue outlet connection boiler system can realize purifying former flue gas into the clean flue gas that the principal ingredients is nitrogen gas and carbon dioxide, provides reaction raw materials nitrogen gas for the electrochemistry ammonia making device, and the ammonia pressurization liquefier can realize carrying out the extraction separation of ammonia to the gas mixture that produces after the electrolytic bath reaction, and ammonia pressurization liquefier ammonia output end connects the ammonia storage tank. This system can realize recycling the nitrogen gas in former flue gas, and the reaction generates the ammonia and is used for the flue gas denitration, and the abundant ammonia after the denitration can be sent to market selling, improves the profitability of power plant.
Furthermore, the carbon dioxide pressurizing liquefier is arranged at the air outlet of the desulfurizing tower of the boiler system, so that the carbon dioxide can be liquefied and collected in the clean flue gas, the carbon can be trapped, sealed and utilized, and meanwhile, the flue gas introduced into the electrochemical ammonia production device is mainly nitrogen, so that the trapping efficiency of the electrochemical ammonia production device on the generated ammonia is improved.
Furthermore, the waterproof breathable films are arranged between the anode and the cathode, and the plate-type electrodes with through holes are arranged on the two sides of the anode and the cathode, so that nitrogen and water vapor can enter the electrolytic cell through the waterproof breathable films, and the raw material supply rate and the purity in the reaction process are improved.
Drawings
FIG. 1 is a system for electrochemically producing ammonia from flue gas of a thermal power plant according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an electrochemical ammonia production apparatus according to an embodiment of the present invention.
In the figure: a boiler 1; a superheater 2; an ammonia nozzle 3; an SCR reactor 4; an air preheater 5; an electric dust collector 6; a desulfurizing tower 7; cleaning the flue gas 8; a steam turbine 9; a generator 10; a power transmission line 11; water vapor 12; an anode 13; a cathode 14; an electrolyte 15; a catalyst 16; ammonia gas 17; an ammonia storage tank 18; a liquid ammonia tanker 19; a carbon dioxide pressure liquefier 211; an ammonia gas pressure liquefier 212; a carbon dioxide storage tank 22; a carbon dioxide tank wagon 23; a steam power generation system 25; a boiler system 26; an electrochemical ammonia production device 27; a waterproof breathable film 28; the plate electrode 29.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the utility model.
The utility model relates to a system for electrochemically preparing ammonia by utilizing flue gas of a thermal power plant, which comprises a steam power generation system 25, a boiler system 26 and an electrochemical ammonia preparation device 27, as shown in figure 1; wherein the electrochemical ammonia production device 27 comprises an anode 13, a cathode 14, an electrolyte 15, a catalyst 16 and an electrolytic cell;
wherein, an anode 13 is arranged on one side in the electrolytic cell, and a cathode 14 is arranged on the other side; electrolyte 15 and catalyst 16 are placed in the cell; a mixed gas outlet is arranged at the top of the electrolytic cell; the mixed gas outlet is connected with an ammonia gas pressurizing liquefier 212, and the ammonia gas output end of the pressurizing liquefier 212 is connected with the input end of the ammonia storage tank 18; the output end of the ammonia storage tank 18 is connected with the SCR reactor 4 at the tail part of the boiler system 26;
the clean flue gas discharge passage of the boiler system 26 is provided with a carbon dioxide pressurizing liquefier 211 and is connected to the anode 13; the steam-electric power generation system 25 is supplied with working steam from a boiler system 26; a steam extraction pipeline is arranged on the steam power generation system 25, and the output end of the steam extraction pipeline is connected to the cathode 14; the power transmission terminals of the steam power generation system 25 are connected to the anode 13 and the cathode 14, respectively, for power supply via the power transmission line 11.
As shown in FIG. 2, the anode 13 is made of nickel, the cathode 14 is made of stainless steel, the electrolyte 15 is made of NaOH-KOH mixed solution, and the catalyst 16 is made of Fe2O3Powder, a waterproof breathable film 28 is arranged between the anode 13 and the cathode 14, plate electrodes 29 with through holes are wrapped on the two sides of the powder and are respectively used as the side walls of the electrolytic cell, so that nitrogen and water vapor 12 can conveniently enter the electrolytic cell to participate in chemical reaction.
The outer side wall of the anode 13 is communicated with a gas channel of the carbon dioxide pressurizing liquefier 211 to be connected with nitrogen, and a steam extraction pipeline communicated with the outer side wall of the cathode 14 is connected with steam, so that nitrogen and steam 12 enter the electrolytic cell along the holes of the electrodes to generate electrolytic reaction.
The steam power generation system 25 comprises a superheater 2, a steam turbine 9 and a generator 10, wherein the superheater 2 is arranged in a horizontal flue of the boiler 1 and is sequentially connected with the steam turbine 9 and the generator 10 outside the boiler 1, and the steam turbine 9 comprises a steam extraction pipeline; the generator 10 is driven by the water vapor 12 to rotate to generate electricity, the output electricity quantity is added with a power transmission line 11 and is sent to the electrochemical ammonia production device 27 to be used as reaction energy supply, and the output end of the power transmission line 11 is connected with the power supply input ends of the anode 13 and the cathode 14.
The boiler system 26 comprises an SCR reactor 4, an air preheater 5, an electric dust collector 6 and a desulfurizing tower 7 which are sequentially connected to a flue, a carbon dioxide pressurizing liquefier 211 is arranged on a clean flue gas discharge channel of the desulfurizing tower 7, so that the liquefaction of carbon dioxide in clean flue gas 8 can be realized, and the carbon dioxide pressurizing liquefier 211 is connected with a carbon dioxide storage tank 22 and is used for collecting liquefied carbon dioxide and transporting and transferring the liquefied carbon dioxide through a carbon dioxide tank car 23 to realize carbon capture, storage and utilization;
the mixed gas outlet of the electrochemical ammonia production device 27 is connected with an ammonia gas pressurizing liquefier 212, the ammonia gas output end of the pressurizing liquefier 212 is connected with an ammonia storage tank 18, the output end of the ammonia storage tank 18 is connected with an ammonia nozzle 3, the ammonia nozzle 3 is arranged at the top of the SCR reactor 4, ammonia is sprayed into the SCR reactor 4, and nitrogen oxides in the flue gas are removed.
The electrochemical ammonia production device provided by the utility model has the advantages of simple system and small floor area, can safely operate under normal pressure, and has no influence on the arrangement and operation safety of the existing equipment in a power plant.
The utility model relates to a system for electrochemically preparing ammonia by utilizing flue gas of a thermal power plant, which comprises the following steps as shown in figure 1:
the steam power generation system 25 leads the water vapor 12 to one side of the cathode 14 of the chemical ammonia production device 27 through a steam extraction pipeline, enters the electrolytic cell through a hole on the side wall of the cathode 14, and simultaneously, the generator 10 is externally connected with a power transmission line 11 to provide electric energy for the chemical ammonia production device 27;
the flue gas is processed by a boiler system 26 to obtain clean flue gas 8 comprising nitrogen and carbon dioxide, and after the clean flue gas 8 enters a carbon dioxide pressurizing liquefier 211, the carbon dioxide is liquefied and guided to a carbon dioxide storage tank 22 for storage and utilization;
introducing the nitrogen left in the clean flue gas 8 into one side of the anode 13, and entering the electrolytic cell through the hole in the side wall of the anode 13; the nitrogen and the water vapor 12 are electrochemically reacted in the electrochemical ammonia production device 27 to generate ammonia gas 17 and oxygen gas, the mixed gas outlet of the electrochemical ammonia production device 27 is connected with the ammonia gas pressurizing liquefier 212, the mixed gas is pressurized by the ammonia gas pressurizing liquefier 212 to generate liquid ammonia gas, the liquid ammonia gas enters the ammonia storage tank 18 through the ammonia gas output end, and the oxygen gas is discharged through the oxygen gas outlet.
The electrochemical reaction of the electrochemical ammonia production device 27 is specifically:
on the cathode 14: fe2O3+3H2O+6e-→2Fe+6OH-，
On the anode 13: 2Fe +6OH-+N2→2NH3+Fe2O3，
The overall chemical reaction is: n is a radical of2+3H2O→2NH3+3/2O2。
Wherein, part of ammonia gas 17 is sent to the SCR reactor 4 through the ammonia nozzle 3 and is used for the denitration process of the boiler system 26; and the surplus ammonia 17 is stored in an ammonia storage tank 18 and can also be loaded into a liquid ammonia tank truck 19 and sent to the outside of the plant for sale, so that the profitability of the power plant is improved.
The carbon dioxide pressurizing liquefier 211 arranged at the gas outlet of the desulfurizing tower 7 liquefies the carbon dioxide, guides the liquefied carbon dioxide to the carbon dioxide storage tank 22 for storage, realizes reutilization or burying and sealing, and can also be sent to the outside of the plant for sale through the carbon dioxide tank car 23, thereby improving the profitability of the power plant and reducing the carbon emission of the coal-fired power plant.
The system for electrochemically producing ammonia by utilizing the flue gas of a thermal power plant is used for providing electric energy and partial steam for an electrochemical ammonia production device through a steam power generation system, the steam enters an electrolytic cell through a cathode waterproof breathable film, the flue gas becomes clean flue gas with main components of nitrogen and carbon dioxide gas after passing through a boiler system, the clean flue gas is treated by a carbon dioxide pressurizing liquefier, the carbon dioxide gas is liquefied and enters a carbon dioxide storage tank, and the rest nitrogen enters the electrolytic cell through the waterproof breathable film in an anode; the electrochemical ammonia production device generates a mixed gas of ammonia gas and oxygen gas through electrochemical reaction, and then the ammonia gas is extracted and separated through an ammonia gas pressurizing liquefier; the raw materials of the system for preparing ammonia are purified flue gas and steam pumped out from a steam turbine, can be obtained from local materials, do not need external material input and a complex separation process, realize the reutilization of nitrogen in the flue gas, and simultaneously, a required external power supply can be directly obtained from a power plant, so that the system has good synchronism with the operation of a coal-fired power plant.
Compared with the traditional Haber process, the electrochemical ammonia production can be carried out at low temperature and low pressure, the energy consumption can be reduced by 20 percent, the reaction is not limited by thermodynamics, and the one-way hydrogen conversion rate can reach 100 percent theoretically.
Claims (8)
1. A system for electrochemically producing ammonia by utilizing flue gas of a thermal power plant is characterized by comprising a steam power generation system (25), a boiler system (26) and an electrochemical ammonia production device (27);
the electrochemical ammonia production device (27) comprises an anode (13), a cathode (14), an electrolyte (15), a catalyst (16) and an electrolytic cell; an anode (13) is arranged on one side in the electrolytic cell, and a cathode (14) is arranged on the other side in the electrolytic cell; electrolyte (15) and catalyst (16) are placed in the electrolytic cell; a mixed gas outlet is arranged at the top of the electrolytic cell; the mixed gas outlet is connected with an ammonia gas pressurizing liquefier (212), and the ammonia gas output end of the pressurizing liquefier (212) is connected with the input end of an ammonia storage tank (18); the output end of the ammonia storage tank (18) is connected with an SCR reactor (4) of the boiler system (26);
the clean flue gas outlet of the boiler system (26) is connected with a carbon dioxide pressurizing liquefier (211) and is connected with the anode (13);
the steam power generation system (25) is provided with work steam by a boiler system (26); a steam extraction pipeline is arranged on the steam power generation system (25), and the output end of the steam extraction pipeline is connected to the cathode (14); the power transmission end of the steam power generation system (25) is respectively connected with an anode (13) and a cathode (14) for supplying power through a power transmission line (11).
2. The system for electrochemically producing ammonia by utilizing flue gas of a thermal power plant according to claim 1, wherein the steam power generation system (25) comprises a superheater (2), a steam turbine (9) and a generator (10), the superheater (2) is arranged in a flue of the boiler (1) and is sequentially connected with the steam turbine (9) and the generator (10) outside the boiler (1); the steam turbine (9) is provided with a steam extraction pipeline, and the generator (10) is provided with an output end of a power transmission line (11).
3. The system for electrochemically producing ammonia by utilizing flue gas of a thermal power plant according to claim 1, wherein the boiler system (26) comprises an SCR reactor (4), an air preheater (5), an electric dust remover (6) and a desulfurizing tower (7) which are sequentially connected to a flue, and a carbon dioxide pressurizing liquefier (211) is arranged on a clean flue gas discharge channel of the desulfurizing tower (7).
4. The system for electrochemically producing ammonia by using flue gas of a thermal power plant as claimed in claim 1, wherein the output end of the carbon dioxide pressurizing liquefier (211) is connected with a carbon dioxide storage tank (22).
5. The system for electrochemically producing ammonia by using flue gas of a thermal power plant as claimed in claim 1, wherein the anode (13) is made of nickel, and the cathode (14) is made of stainless steel.
6. The system for electrochemically producing ammonia by utilizing flue gas of a thermal power plant as claimed in claim 1, wherein the catalyst (16) adopts Fe2O3And (3) powder.
7. The system for electrochemically producing ammonia by using flue gas of a thermal power plant according to claim 1, wherein a waterproof breathable membrane (28) is arranged between the anode (13) and the cathode (14), and plate-type electrodes (29) provided with through holes are wrapped at two sides of the waterproof breathable membrane and are respectively used as side walls of the electrolytic cell.
8. The system for electrochemically producing ammonia by using flue gas of a thermal power plant as claimed in claim 7, wherein the gas channel of the carbon dioxide pressure liquefier (211) communicated with the outer side wall of the anode (13) is connected with nitrogen, and the steam extraction pipeline of the cathode (14) communicated with the outer side wall is connected with steam.
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| CN202121186505.3U CN215404571U (en) | 2021-05-28 | 2021-05-28 | System for utilize flue gas electrochemistry of thermal power plant to make ammonia |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186554A (en) * | 2021-05-28 | 2021-07-30 | 西安热工研究院有限公司 | System and method for electrochemically preparing ammonia by utilizing flue gas of thermal power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113186554A (en) * | 2021-05-28 | 2021-07-30 | 西安热工研究院有限公司 | System and method for electrochemically preparing ammonia by utilizing flue gas of thermal power plant |
| CN113186554B (en) * | 2021-05-28 | 2024-01-30 | 西安热工研究院有限公司 | System and method for electrochemically preparing ammonia by utilizing flue gas of thermal power plant |
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