CN103453542A - Power plant carbon and oxygen circulation utilization device and process of device - Google Patents
Power plant carbon and oxygen circulation utilization device and process of device Download PDFInfo
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- CN103453542A CN103453542A CN2013103971027A CN201310397102A CN103453542A CN 103453542 A CN103453542 A CN 103453542A CN 2013103971027 A CN2013103971027 A CN 2013103971027A CN 201310397102 A CN201310397102 A CN 201310397102A CN 103453542 A CN103453542 A CN 103453542A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 14
- 239000001301 oxygen Substances 0.000 title claims abstract description 14
- 239000003245 coal Substances 0.000 claims abstract description 52
- 239000003054 catalyst Substances 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 17
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 29
- CSJDCSCTVDEHRN-UHFFFAOYSA-N methane;molecular oxygen Chemical compound C.O=O CSJDCSCTVDEHRN-UHFFFAOYSA-N 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 18
- 239000003546 flue gas Substances 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 230000023556 desulfurization Effects 0.000 claims description 12
- 239000012212 insulator Substances 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 9
- 239000003337 fertilizer Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 150000003464 sulfur compounds Chemical class 0.000 claims description 7
- 230000003009 desulfurizing effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 230000001413 cellular effect Effects 0.000 claims description 5
- 239000002817 coal dust Substances 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Natural products O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 9
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 4
- 238000006392 deoxygenation reaction Methods 0.000 abstract 2
- 229910001882 dioxygen Inorganic materials 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/32—Direct CO2 mitigation
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention relates to the field of energy saving and environment protection, and relates to the circulation utilization of CO2 (carbon dioxide) and O2 (oxygen gas), in particular to a power plant carbon and oxygen circulation utilization device and a process of the device. The power plant carbon and oxygen circulation utilization device comprises a coal conveyor (17), a CO2 back flow device (6), a plasma torch catalyst (1), an energy-saving boiler (2), a heat exchanger (3), a CO2 catching separator (12), a deaerator (14), a remote anti-explosion total control detection system (18) and a chimney (13). A carrier air coal conveying mode is adopted for conveying reaction raw materials into the plasma torch catalyst (1) to be catalyzed, the catalyzed reaction substances are conveyed into the energy-saving boiler (2) to realize the sufficient combustion with O2, and the generated CO2 is cyclically utilized after the deoxygenation. The device and the process have the advantages that firstly, the low-cost pure oxygen combustion is realized; secondly, the CO2 backflow catalysis and deoxygenation circulation utilization is realized; thirdly, the equipment investment is reduced, and 70 to 80 percent of the equipment volume of the boilers in links of dust removal, denitration, desulfuration and the like is reduced; fourthly, 45 to 70 percent of the coal consumption is saved; and fifthly, the pure conversion rate of heat energy is improved by more than one time.
Description
Technical field
The present invention relates to the energy-conserving and environment-protective field, relate to recycling of CO2 and O2, relate in particular to power plant's carbon oxygen cycle use device and technique thereof.
Background technology
Power plant's generating produces greenhouse effects arch-criminal CO2, is unfavorable for existing environmental requirement, and, except the IGCC generating, also there is following defect in existing traditional power plant technology simultaneously:
1, air burning, the clean low conversion rate of heat energy, the key reaction formula is: C+O2+N2---CO2+N2;
The 1 ton of mark coal that burns needs approximately 2.7 tons of O2, and brings approximately 10 tons of N2 into, in the burning and exhausting flue gas, and N2 content 78-85%, CO2 content only 8-15%.In flue gas, N2 content is high, and the one, cause the immediate cause of the clean low conversion rate of heat energy, the 2nd, cause the conveyance system volumes of equipment such as boiler and dedusting, denitration, desulfurization, chimney large, waste power plant's cost of investment and operating cost.
2, the CO2 wasting of resources, contaminated environment: because in flue gas, CO2 content is too low, strengthen CO2 trapping cost, cause power plant's CO2 resource generally to waste.
3, thermal loss is large, the clean low conversion rate of heat energy: the heat energy of 500-1000 ℃ in traditional power-plant flue gas, almost in dedusting, denitration, sweetening process, all being consumed and fallen by smoke stack emission, is to cause the clean low conversion rate of power plant's heat energy in 40% one of the main reasons.
Therefore improving the clean conversion ratio of heat energy in energy-saving and emission-reduction is the main development direction of existing power plant.
Summary of the invention
The present invention overcomes above-mentioned weak point, purpose is to provide power plant's carbon oxygen cycle use device and technique thereof, solve existing power plant heat energy low conversion rate, CO2 and the problems such as the O2 wasting of resources, contaminated environment, realize power plant's carbon oxygen cycle utilization, improve the heat energy conversion ratio.
The present invention achieves the above object by the following technical programs: power plant's carbon oxygen cycle use device comprises: the device of delivering coal, CO2 return channel, plasmatorch catalyst converter, power economized boiler, heat exchanger, CO2 trapping separator, degasifier, long-range explosion-proof master control detection system, chimney; Described plasmatorch catalyst converter one end connects deliver coal device, CO2 return channel, the other end is communicated with the gas approach of power economized boiler bottom, the power economized boiler top is provided with outlet, the outlet on top is communicated with the CO2 return channel, the power economized boiler bottom also is provided with exhanst gas outlet, and the exhanst gas outlet of bottom is connected with the gas approach flue of heat exchanger; The exhanst gas outlet flue of described heat exchanger is connected with CO2 trapping separator, and CO2 trapping separator is connected with the oxygen feeder of heat exchanger by degasifier, air blast, and degasifier is connected with the carbon recover, and CO2 trapping separator also is connected with chimney; Described long-range explosion-proof master control detection system is connected with each device and detects in real time.
As preferably, power plant's carbon oxygen cycle use device includes system for desulfuration and denitration, and described system for desulfuration and denitration comprises desulfurizer, denitrification apparatus; Desulfurizer is communicated between the exhanst gas outlet flue and CO2 trapping separator of heat exchanger, and described denitrification apparatus is arranged between the outlet and CO2 return channel on power economized boiler top; Described desulfurizer comprises: deduster, air-introduced machine, desulfurization slag liquid, desulfurizing tower, heat exchanger, the exhanst gas outlet flue of described heat exchanger is connected with CO2 trapping separator by deduster, air-introduced machine, desulfurization slag liquid, desulfurizing tower, heat exchanger successively.
As preferably, carbon oxygen cycle use device also includes steam case, clarifier, sulfur-based compound fertilizer production line, and described steam case is communicated with power economized boiler and booster fan, and booster fan is communicated with CO2 return channel and plasmatorch catalyst converter; Described clarifier is communicated with exhanst gas outlet flue and the CO2 trapping separator of heat exchanger, and described clarifier also is connected with sulfur-based compound fertilizer production line.
As preferably, described plasmatorch catalyst converter comprises: hollow cathode base, concavo-convex negative electrode, an anode, two anodes, long pressurization cylinder, negative electrode cooling circulating water, anode cooling circulating water, long pressurization cylinder cooling circulating water, carrier wind, electrode catalyst core, insulator, dc source, high-voltage pulse power source, high-voltage pulse device; Described carrier wind comprises: first via carrier wind, the second road carrier wind, Third Road carrier wind, tetra-road carrier wind, five road carrier winds; Described hollow cathode base, concavo-convex negative electrode, an anode, two anodes, long pressurization cylinder are arranged in order and left-right symmetry, the negative electrode of described dc source is connected with the hollow cathode base of a side, concavo-convex negative electrode, an anode of the anode of dc source and homonymy, two anodic bondings; The negative electrode of described high-voltage pulse power source is connected with the hollow cathode base of opposite side, concavo-convex negative electrode, an anode of the anode of high-voltage dc pulse power and homonymy, two anodic bondings; Cellular electrode catalyst core is inserted in plasmatorch catalyst converter central authorities, and an end is connected with the high-voltage pulse device by insulator; Negative electrode cooling circulating water flow through the hollow cathode base of the left and right sides, concavo-convex negative electrode, anode cooling circulating water flow through an anode, two anodes of the left and right sides, the translateral long pressurization cylinder of long pressurization cylinder cooling circulating water stream.
Power plant's carbon oxygen cycle utilizes technique, comprises following methods:
Step 1: open long-range explosion-proof master control monitoring system switch.And open each system switching by operational procedure successively;
Step 2: adopt the carrier wind mode of delivering coal that reaction raw materials is sent into to the plasmatorch catalyst converter and carry out catalysis, by the reactant after catalysis with send into power economized boiler and fully burn with O2;
Step 3: produce the flue gas of 500-1000 ℃ after the power economized boiler burning, a part is returned to the CO2 return channel and is recycled; Another part send CO2 trapping separator to isolate CO2 after dedusting, denitration, desulfurization, the N2 that desulphurization denitration produces is through smoke stack emission, CO2 trapping separator isolated CO2 send the degasifier deoxidation, O2 send the power economized boiler burning after heat exchanger heats, carbon send the carbon recover to reclaim, do carbon black and sell, or recycle for the device of delivering coal.
As preferably, the carrier wind type of delivering coal is deliver coal powder or CO2+H2O(water vapour of CO2) powder of delivering coal, the O2 powder of delivering coal; Preferably first via carrier wind, the second road carrier wind, Third Road carrier wind are that the CO2 powder ， tetra-road carrier wind, five road carrier winds of delivering coal are water vapour (H2O) powder of delivering coal; Or preferably first via carrier wind is the CO2 powder of delivering coal, the second road carrier wind, Third Road carrier wind, tetra-road carrier winds are that water vapour (H2O) the powder ， five road carrier winds of delivering coal are that CO2+ water vapour (H2O) is delivered coal; Or preferably first via carrier wind, the second road carrier wind, Third Road carrier wind are that CO2+ water vapour (H2O) is delivered coal powder ， tetra-road carrier wind, five road carrier winds for sending O2; Described carrier wind blast is preferred: first via carrier wind >=1KPa, second road carrier wind >=5KPa, Third Road carrier wind >=10KPa ， tetra-road carrier winds >=15KPa ， five road carrier wind >=20KPa.
As preferably, be provided with one or more layers combustion district in power economized boiler, the temperature in power economized boiler reaches 1300 ℃.
As preferably, heat exchanger utilizes the flue gas of 500-1000 ℃ that O2 is heated to more than 80 ℃ with heat transfer type, and the O2 after preheating sends into the power economized boiler burning.
As preferably, the CO2 return channel directly by power economized boiler 500-1000 ℃ of flue gas recirculations out return together with water vapour, the coal dust of the device output of delivering coal is mixed and sends into the plasmatorch catalyst converter and carry out catalytic conversion reaction.
As preferably, degasifier output voltage 10-120KV, overlapped high-frequency pulse 200-1600KV, the pulse power 1-500A.
Beneficial effect of the present invention is: the one, and low-cost pure oxygen burning, the 2nd, CO2 backflow catalysis and deoxidation recycle, the 3rd, reduce equipment investment, reduce the link volumes of equipment 70-80% such as boiler and dedusting, denitration, desulfurization, the 4th, be sparing in the use of coal the 45-70%, five, the clean conversion ratio of heat energy improves more than 1 times.
The accompanying drawing explanation
Fig. 1 is the structural representation of power plant's carbon oxygen cycle use device of embodiment 1;
Fig. 2 is the structural representation of power plant's carbon oxygen cycle use device of embodiment 2;
Fig. 3 is the structural representation of plasmatorch catalyst converter;
Fig. 4 is the structural representation of power economized boiler;
Fig. 5 is the structural representation of degasifier.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in this:
Embodiment 1: as shown in Figure 1, power plant's carbon oxygen cycle use device is comprised of the device 17 of delivering coal, CO2 return channel 6, plasmatorch catalyst converter 1, power economized boiler 2, denitrator 5, heat exchanger 3, deduster 7, booster fan 16, air-introduced machine 8, desulfurization slag liquid 10, desulfurizing tower 11, heat exchanger 9, CO2 trapping separator 12, degasifier 14, air blast 4, carbon recover 15, long-range explosion-proof master control detection system 18, chimney 13; Described plasmatorch catalyst converter 1 one ends connect deliver coal device 17, CO2 return channel 6, the other end is communicated with the gas approach of power economized boiler 2 bottoms, power economized boiler 2 tops are provided with outlet, the outlet on top is communicated with CO2 return channel 6, power economized boiler 2 bottoms also are provided with exhanst gas outlet, and the exhanst gas outlet of bottom is connected with the gas approach flue of heat exchanger 3; The exhanst gas outlet flue of described heat exchanger 3 is connected with CO2 trapping separator 12, CO2 trapping separator 12 is connected with the oxygen feeder of heat exchanger 3 by degasifier 14, air blast 4, degasifier 14 is connected with carbon recover 15, and CO2 trapping separator 12 also is connected with chimney 13; Described long-range explosion-proof master control detection system 18 is connected with each device and detects in real time; Described denitrator 5 is arranged between the outlet and CO2 return channel 6 on power economized boiler 2 tops; The exhanst gas outlet flue of described heat exchanger 3 is connected with CO2 trapping separator 12 by deduster 7, air-introduced machine 8, desulfurization slag liquid 10, desulfurizing tower 11, heat exchanger 9 successively.
Power plant's carbon oxygen cycle utilizes technological principle chemical conversion formula to be:
The CO2+C(coal)---2CO (1)
The C(coal)+H2O---CO+H2 (2)
CO+H2O——CO2+H2 （3）
2CO+O2——2CO2 （4）
The C(coal)+O2---CO2 (5)
CO2---C(carbon)+O2 (6)
Concrete operations comprise:
The first step: open long-range explosion-proof master control monitoring system 18 switches.And open each system switching by operational procedure successively;
Second step: start CO2 return channel 6 use CO2 the coal dust in the device 17 of delivering coal is sent into to 1 catalysis of plasmatorch catalyst converter, complete the CO2+C(coal)---the CO reaction, CO is sent into to power economized boiler 2 with fully burning with O2;
The 3rd step: rear 500-1000 ℃ of flue gas CO2 parts of power economized boiler 2 burning are returned to CO2 return channel 6 and are recycled; A part send CO2 trapping separator 12 to separate after dedusting, denitration, desulfurization, and N2 send chimney 13 discharges, and CO2 send degasifier 14 deoxidations, and O2 more than 80 ℃, send power economized boiler 2 burnings through heat exchanger 3 heating.Carbon send carbon recover 15 to reclaim, and does carbon black and sells, or recycle for the device 17 of delivering coal.
As shown in Figure 3, plasmatorch catalyst converter 1 comprises: hollow cathode base 22, concavo-convex negative electrode 23, an anode 24, two anodes 25, long pressurization cylinder 26, negative electrode cooling circulating water 27, anode cooling circulating water 28, long pressurization cylinder cooling circulating water 29, carrier wind, electrode catalyst core 35, insulator 36, dc source 37, high-voltage pulse power source 38, high-voltage pulse device 39; Described carrier wind comprises: first via carrier wind 30, the second road carrier wind 31, Third Road carrier wind 32, tetra-road carrier wind 33, five road carrier winds 34; Described hollow cathode base 22, concavo-convex negative electrode 23, an anode 24, two anodes 25, long pressurization cylinder 26 are arranged in order and left-right symmetry, the negative electrode of described dc source 37 is connected with hollow cathode base 22, the concavo-convex negative electrode 23 of a side, and the anode of dc source 37 is connected with an anode 24, two anodes 25 of homonymy; The negative electrode of described high-voltage pulse power source 38 is connected with hollow cathode base 22, the concavo-convex negative electrode 23 of opposite side, and the anode of high-voltage dc pulse power 38 is connected with an anode 24, two anodes 25 of homonymy; Cellular electrode catalyst core 35 is inserted in plasmatorch catalyst converter central authorities, and an end is connected with high-voltage pulse device 39 by insulator 36; Negative electrode cooling circulating water 27 flow through hollow cathode base 22, the concavo-convex negative electrode 23 of the left and right sides, anode cooling circulating water 28 flow through an anode 24, two anodes 25 of the left and right sides, the translateral long pressurization cylinder 26 of long pressurization cylinder cooling circulating water 29 stream; Long pressurization cylinder 26 is communicated with the gas approach of 40 lower ends, energy saving pot furnace wall.
Wherein, the carrier wind blast is preferred: first via carrier wind 30 >=1KPa, second road carrier wind 31 >=5KPa, Third Road carrier wind 32 >=10KPa ， tetra-road carrier wind 33 >=15KPa ， five road carrier wind 34 >=20KPa.
Take the multiple collocation of the multichannel carrier wind mode of delivering coal, preferably first via carrier wind 30, the second road carrier wind 31, Third Road carrier wind 32 are the CO2 powder of delivering coal; The 4th road carrier wind 33, five road carrier winds 34 are the water vapour powder of delivering coal.
The chemical conversion formula that mainly completes in long-range explosion-proof plasma catalytic converter is:
CO2+C——2CO
C+H2O——CO+H2
CO+H2O——CO2+H2
During concrete operations:
The first step: the switch of opening negative electrode cooling circulating water 27, anode cooling circulating water 28;
Second step: open dc source 37, high-voltage pulse power source 38, high-voltage pulse device 39 switches;
The 3rd step, open first via carrier wind 30, the second road carrier wind 31, Third Road carrier wind 32, tetra-road carrier wind 33, five road carrier wind 34 switches;
As shown in Figure 4, power economized boiler 2 comprises: send oxygen device 42, lower primary zone 43, Zhong Ciran district 44, upper booster zone 45; Described lower primary zone 43, Zhong Ciran district 44, upper booster zone 45 are located in the combustion chamber (41) of power economized boiler 2 from the bottom up successively, send oxygen device 42 to be located at power economized boiler 2 bottoms and are connected with the oxygen exhaust of heat exchanger 3.
Multilayer combustion district is arranged with and is beneficial to abundant burning, and significantly improves the clean conversion ratio of heat energy.
Power economized boiler 2 mainly completes the chemical conversion formula:
2CO+O2——2CO2
C+O2——CO2
During concrete operations:
The first step: open and send oxygen device 42 switches to send O2 in power economized boiler 2, the oxygen deliverng pipe road junction is 1 layer or multilayer, and every layer one or more send the O2 entrance.
Second step: open successively lower primary zone 43, Zhong Ciran district 44, upper booster zone 45, plasmatorch catalyst converter 1 power switch, by the CO+C(coal)+H2O(water vapour) gas of catalytic reaction is sent in power economized boiler 2 and is burnt with the O2 that send oxygen device 42 to send here.
As shown in Figure 5, degasifier 14 comprises: O2 air accumulator 46, high frequency waveforms device 47, high frequency pulse power supply 48, degasifier shell 49, insulator 50, electrode cores 51, explosion-proof sensor 52, infrared sensing viewer 53; Described degasifier shell 49 bottoms are connected with carbon recover 15, degasifier shell 49 bottoms are connected with CO2 trapping separator 12, degasifier shell 49 tops are connected with O2 air accumulator 46, degasifier shell 49 tops are provided with insulator 50, insulator 50 is provided with electrode cores 51, the end that insulator 50 stretches out degasifier shell outside is connected with high frequency waveforms device 47, and high frequency pulse power supply 48 is connected with high frequency waveforms device 47; Described explosion-proof sensor 52, infrared sensing viewer 53 are located at respectively the top and bottom of degasifier 14, detect deoxidation process.
Degasifier shell 49 is to coat the stainless steel of catalyst with the preferred material of electrode cores 51, and the preferred Ni of catalyst is main rare earth element, or NiFe is main rare earth element; Electrode cores 51 is cellular or the web plate shape, by one or more, is rearranged.
During concrete operations:
The first step: open successively high frequency pulse power supply 48 and CO2 trapping separator 12 switches, and explosion-proof sensor 52 and infrared sensing viewer 53 switches;
Second step: CO2 becomes C and O2 through electrode cores 51 catalytic decomposition, and C send carbon recover 15, and O2 send O2 air accumulator 46, for power economized boiler 2 burnings.
Embodiment 2: as shown in Figure 2, power plant's carbon oxygen cycle use device is comprised of the device 17 of delivering coal, CO2 return channel 6, plasmatorch catalyst converter 1, power economized boiler 2, heat exchanger 3, booster fan 16, CO2 trapping separator 12, degasifier 14, air blast 4, carbon recover 15, long-range explosion-proof master control detection system 18, steam case 19, clarifier 20, sulfur-based compound fertilizer production line 21; Described plasmatorch catalyst converter 1 one ends connect the device 17 of delivering coal, the other end is communicated with the gas approach of power economized boiler 2 bottoms, power economized boiler 2 tops are provided with outlet, the outlet on top is communicated with CO2 return channel 6, power economized boiler 2 bottoms are provided with exhanst gas outlet, and the exhanst gas outlet of bottom is connected with the gas approach flue of heat exchanger 3; Described steam case 19 is communicated with power economized boiler 2 and booster fan 16, and booster fan 16 is communicated with CO2 return channel 6 and plasmatorch catalyst converter 1; Described clarifier 20 is communicated with exhanst gas outlet flue and the CO2 trapping separator 12 of heat exchanger 3, and described clarifier 20 also is connected with sulfur-based compound fertilizer production line 21; CO2 trapping separator 12 is connected with the oxygen feeder of heat exchanger 3 by degasifier 14, air blast 4, and degasifier 14 is connected with carbon recover 15.
The device of the present embodiment send after steam case 19 and together with CO2, the coal dust of the device 17 of delivering coal is sent into to the plasmatorch catalyst converter (1 carries out catalyzed conversion by the water vapour by power economized boiler 2.The key reaction formula is:
The CO2+C(coal)---2CO (1)
The C(coal)+H2O---CO+H2 (2)
CO+H2O——CO2+H2 （3）
After completing above-mentioned reaction, send clarifier 20 to carry out dedusting, denitration, desulfurization integrated purified treatment flue gas, dirt nitre sulfur material send sulfur-based compound fertilizer production line 21 to produce fertilizer, and CO2 send CO2 trapping separator 12 to recycle.
This device has been realized recycling and recycling of carbon resource, oxygen resource, dirt sulphur nitre material, reduces the discharge of the pollutants such as flue gas in the time of energy-conserving and environment-protective, has reduced the generation of nitrogen oxide.
Above described be specific embodiments of the invention and the know-why used, if the change of doing according to conception of the present invention, when its function produced does not exceed spiritual that specification and accompanying drawing contain yet, must belong to protection scope of the present invention.
Claims (10)
1. power plant's carbon oxygen cycle use device, is characterized in that comprising: the device of delivering coal (17), CO2 return channel (6), plasmatorch catalyst converter (1), power economized boiler (2), heat exchanger (3), CO2 trapping separator (12), degasifier (14), long-range explosion-proof master control detection system (18), chimney (13); Described plasmatorch catalyst converter (1) one end connects deliver coal device (17), CO2 return channel (6), the other end is communicated with the gas approach of power economized boiler (2) bottom, power economized boiler (2) top is provided with outlet, the outlet on top is communicated with CO2 return channel (6), power economized boiler (2) bottom also is provided with exhanst gas outlet, and the exhanst gas outlet of bottom is connected with the gas approach flue of heat exchanger (3); The exhanst gas outlet flue of described heat exchanger (3) is connected with CO2 trapping separator (12), CO2 trapping separator (12) is connected with the oxygen feeder of heat exchanger (3) by degasifier (14), air blast (4), degasifier (14) is connected with carbon recover (15), and CO2 trapping separator (12) also is connected with chimney (13); Described long-range explosion-proof master control detection system (18) is connected with each device and detects in real time.
2. power plant according to claim 1 carbon oxygen cycle use device, is characterized in that, also include system for desulfuration and denitration, described system for desulfuration and denitration comprises desulfurizer, denitrification apparatus; Desulfurizer is communicated between the exhanst gas outlet flue and CO2 trapping separator (12) of heat exchanger (3), and described denitrification apparatus is arranged between the outlet and CO2 return channel (6) on power economized boiler (2) top; Described desulfurizer comprises: deduster (7), air-introduced machine (8), desulfurization slag liquid (10), desulfurizing tower (11), heat exchanger (9), the exhanst gas outlet flue of described heat exchanger (3) is connected with CO2 trapping separator (12) by deduster (7), air-introduced machine (8), desulfurization slag liquid (10), desulfurizing tower (11), heat exchanger (9) successively.
3. power plant according to claim 1 carbon oxygen cycle use device, it is characterized in that, also include steam case (19), clarifier (20), sulfur-based compound fertilizer production line (21), described steam case (19) is communicated with power economized boiler (2) and booster fan (16), and booster fan (16) is communicated with CO2 return channel (6) and plasmatorch catalyst converter (1); Described clarifier (20) is communicated with exhanst gas outlet flue and the CO2 trapping separator (12) of heat exchanger (3), and described clarifier (20) also is connected with sulfur-based compound fertilizer production line (21).
4. power plant according to claim 1 carbon oxygen cycle use device, it is characterized in that, described plasmatorch catalyst converter (1) comprising: hollow cathode base (22), concavo-convex negative electrode (23), an anode (24), two anodes (25), long pressurization cylinder (26), negative electrode cooling circulating water (27), anode cooling circulating water (28), long pressurization cylinder cooling circulating water (29), carrier wind, electrode catalyst core (35), insulator (36), dc source (37), high-voltage pulse power source (38), high-voltage pulse device (39); Described carrier wind comprises: first via carrier wind (30), the second road carrier wind (31), Third Road carrier wind (32), tetra-road carrier wind (33), five road carrier winds (34); Described hollow cathode base (22), concavo-convex negative electrode (23), an anode (24), two anodes (25), long pressurization cylinder (26) are arranged in order and left-right symmetry, the negative electrode of described dc source (37) is connected with the hollow cathode base (22) of a side, concavo-convex negative electrode (23), and the anode of dc source (37) is connected with an anode (24), two anodes (25) of homonymy; The negative electrode of described high-voltage pulse power source (38) is connected with the hollow cathode base (22) of opposite side, concavo-convex negative electrode (23), and the anode of high-voltage dc pulse power (38) is connected with an anode (24), two anodes (25) of homonymy; Cellular electrode catalyst core (35) is inserted in plasmatorch catalyst converter (1) central authorities, and an end is connected with high-voltage pulse device (39) by insulator (36); Negative electrode cooling circulating water (27) flow through the hollow cathode base (22) of the left and right sides, concavo-convex negative electrode (23), anode cooling circulating water (28) flow through an anode (24), two anodes (25) of the left and right sides, long pressurization cylinder cooling circulating water (29) flows translateral long pressurization cylinder (26).
5. the power plant's carbon oxygen cycle that utilizes said apparatus to realize utilizes technique, it is characterized in that comprising following methods:
Step 1: open long-range explosion-proof master control monitoring system (18) switch.And open each system switching by operational procedure successively;
Step 2: adopt the carrier wind mode of delivering coal that reaction raw materials is sent into to plasmatorch catalyst converter (1) and carry out catalysis, by the reactant after catalysis with send into power economized boiler (2) and fully burn with O2;
Step 3: produce the flue gas of 500-1000 ℃ after power economized boiler (2) burning, a part is returned to CO2 return channel (6) and is recycled; Another part send CO2 trapping separator (12) to isolate CO2 after dedusting, denitration, desulfurization, the N2 that desulphurization denitration produces discharges through chimney (13), CO2 trapping separator (12) isolated CO2 send degasifier (14) deoxidation, O2 send power economized boiler (2) burning after heat exchanger (3) heating, carbon send carbon recover (15) to reclaim, do carbon black and sell, or recycle for the device (17) of delivering coal.
6. power plant according to claim 5 carbon oxygen cycle utilizes technique, it is characterized in that, the carrier wind type of delivering coal is deliver coal powder or CO2+H2O(water vapour of CO2) powder of delivering coal, the O2 powder of delivering coal; Preferably first via carrier wind (30), the second road carrier wind (31), Third Road carrier wind (32) are water vapour (H2O) powder of delivering coal for CO2 powder ， tetra-road carrier wind (33) the, five road carrier winds (34) of delivering coal; Or preferably first via carrier wind (30) is the CO2 powder of delivering coal, the second road carrier wind (31), Third Road carrier wind (32), tetra-road carrier winds (33) are that water vapour (H2O) the powder ， five road carrier winds of delivering coal are delivered coal for (34) CO2+ water vapour (H2O); Or preferably first via carrier wind (30), the second road carrier wind (31), Third Road carrier wind (32) are delivered coal powder ， tetra-road carrier wind (33), five road carrier winds (34) for sending O2 for CO2+ water vapour (H2O); Described carrier wind blast is preferred: first via carrier wind (30) >=1KPa, the second road carrier wind (31) >=5KPa, Third Road carrier wind (32) >=10KPa ， tetra-road carrier winds (33) >=15KPa ， five road carrier winds (34) >=20KPa.
7. power plant according to claim 5 carbon oxygen cycle utilizes technique, it is characterized in that, is provided with one or more layers combustion district in power economized boiler (2), and the temperature in power economized boiler (2) reaches 1300 ℃.
8. power plant according to claim 5 carbon oxygen cycle utilizes technique, it is characterized in that, heat exchanger (3) utilizes the flue gas of 500-1000 ℃ that O2 is heated to more than 80 ℃ with heat transfer type, and the O2 after preheating sends into power economized boiler (2) burning.
9. power plant according to claim 5 carbon oxygen cycle utilizes technique, it is characterized in that, CO2 return channel (6) directly by power economized boiler (2) 500-1000 ℃ of flue gas recirculations out return together with water vapour, the coal dust of the device of delivering coal (17) output is mixed and sends into plasmatorch catalyst converter (1) and carry out catalytic conversion reaction.
10. power plant according to claim 5 carbon oxygen cycle utilizes technique, it is characterized in that degasifier (14) output voltage 10-120KV, overlapped high-frequency pulse 200-1600KV, the pulse power 1-500A.
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