CN104033890B - Oxygen-enriched combustion pulverized coal boiler integrating chemical-looping high-temperature air separation oxygen production and CO2 gathering method - Google Patents
Oxygen-enriched combustion pulverized coal boiler integrating chemical-looping high-temperature air separation oxygen production and CO2 gathering method Download PDFInfo
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- CN104033890B CN104033890B CN201410253805.7A CN201410253805A CN104033890B CN 104033890 B CN104033890 B CN 104033890B CN 201410253805 A CN201410253805 A CN 201410253805A CN 104033890 B CN104033890 B CN 104033890B
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention discloses an oxygen-enriched combustion pulverized coal boiler integrating chemical-looping high-temperature air separation oxygen production. The pulverized coal boiler comprises an air preheater, an oxidation reactor, a first cyclone separator, an overflow box with a loose tuyere, a reduction reactor, a second cyclone separator, a high-temperature flue gas draft fan, a high-temperature dust catcher, a coal-fired boiler, a low-temperature dust catcher and a flue gas cooling compression and purification device. The invention also provides a CO2 gathering method using the boiler. According to the invention, the oxygen-enriched combustion pulverized coal boiler is integrated with chemical-looping high-temperature air separation oxygen production, and can effectively reduce the oxygen production power consumption of oxygen-enriched combustion, improve the power generation efficiency of an oxygen-enriched combustion set and realizes gathering of CO2 as compared with an existing boiler.
Description
Technical field
The present invention relates to energy technology field is and in particular to a kind of oxygen-enriched combusting coal of integrated chemical chain high temperature making oxygen by air separation
Powder boiler and CO2Capture method.
Background technology
CO since industrial civilization, in earth atmosphere2Concentration is steeply risen due to the production activity of the mankind.CO2Make
For a kind of typical greenhouse gases, directly result in greenhouse effect.Increasingly notable, the CO with Global climate change in recent years2Trapping
Become the current energy and the hot issue of environmental science research with (CCS) technology of sealing up for safekeeping.Burning chemistry chains are 20th century 80
A kind of CO that age grows up2Separation and collection technology.Coal-burning power plant CO2Discharge has the spies such as partial pressure is low, flow is big and temperature is high
Point, is to reduce discharging CO on a large scale2The field of significant.Under conventional air burning mode, the smoke components overwhelming majority is
Nitrogen, the concentration of carbon dioxide is relatively low, is typically only 10%～15%, is directly separated the carbon dioxide cost of low concentration very
Height, economy is also very poor.Oxygen-enriched combustion technology is also referred to as O2/CO2Combustion technology, or air separation/flue gas recirculating technique, should
Technology is application O2/CO2Gaseous mixture substitute air as fuel combustion oxidant, thus improving CO in flue gas2Volume fraction
A kind of New combustion technique.Oxygen-enriched combusting uses O2/CO2Replace air, flue gas condensing eliminating water be can get the two of high concentration
Carbonoxide (gas concentration lwevel in dry flue gas may be up to more than 95%), so by flue gas pressurization make co 2 liquefaction thus
Reach detached effect, be a kind of collecting carbonic anhydride technology having very much development potentiality.But the maximum defect of this combustion system is
Less economical, supply fuel combustion mainly due to needing to consume substantial amounts of pure oxygen under oxygen-enriched combusting pattern.
The method for producing oxygen through commonly used at present divides two classes, and a class is partition method, will in the air oxygen and the side by physics for the nitrogen
Method carries out separating, and obtains the oxygen of variable concentrations, such as Deep Cooling Method, pressure swing adsorption method and membrane separation process；Another kind of for preparation method, that is,
Using chemical reagent, by redox reaction, produce oxygen from scratch, such as superoxides oxygen, chlorate decomposition, electricity
Xie Shui and ceramic oxygen etc..Traditional oxygen-enriched combusting needs extensive making oxygen by air separation, and investment is big, high energy consumption is so that oxygen-enriched combusting system
System economy and efficiency of energy utilization decline, and the method for producing oxygen through of research New high-efficient low-cost is that oxygen-enriched combusting develops institute further
It is badly in need of one of key issue of solution.
Content of the invention
It is an object of the present invention to provide a kind of oxygen-enriched combusting pulverized-coal fired boiler of integrated chemical chain high temperature making oxygen by air separation, realizing richness
Oxygen power consumption processed can effectively be reduced while oxygen combustion process, there is improve generating efficiency, reduce CO2The advantage of discharge.This
Bright additionally providing carries out CO using the oxygen-enriched combusting pulverized-coal fired boiler of above-mentioned integrated chemical chain high temperature making oxygen by air separation2The method of trapping.
The present invention employs the following technical solutions：
A kind of oxygen-enriched combusting pulverized-coal fired boiler of integrated chemical chain high temperature making oxygen by air separation is it is characterised in that include air preheat
Device (3), oxidation reactor (1), the first cyclone separator (5), the overflow launder (2) being provided with loosening air port, reduction reactor (4),
Second cyclone separator (7), high-temperature flue gas air-introduced machine (8), hot precipitator (9), coal-burning boiler (10), cold precipitator
(11), flue gas cooling compression purification devices (12)；Air preheater (3) is connected with oxidation reactor (1) lower end import, and oxidation is anti-
Device (1) lower end side is answered to be connected with reduction reactor (4) by being provided with the overflow launder (2) in loosening air port, oxidation reactor (1) upper end
Outlet is connected with the first cyclone separator (5), and the upper end outlet of the first cyclone separator (5) is connected with air preheater (3), the
The tremie pipe (6) insertion reduction reactor (4) of one cyclone separator (5) is internal；Reduction reactor (4) upper end outlet and the second rotation
Wind separator (7) is connected, and the tremie pipe (13) of the second cyclone separator (7) is connected with reduction reactor (4) sidepiece, the second whirlwind
The upper end outlet of separator (7) is connected with the burner of coal-burning boiler (10)；The furnace outlet flue of coal-burning boiler (10) is provided with
Flue gas bleeding point is connected with hot precipitator (9), and hot precipitator (9) is through high-temperature flue gas air-introduced machine (8) and reduction reactor (4)
The smoke inlet of lower end is connected, and the back-end ductwork of coal-burning boiler (10) is through cold precipitator (11) and flue gas cooling compression purification dress
Put (12) to be connected.
Described coal-burning boiler (10) does not set air preheater.
Oxygen-enriched combusting pulverized-coal fired boiler using above-mentioned integrated chemical chain high temperature making oxygen by air separation carries out CO2Capture method, including
Following steps：
Step one, air (B) by air preheater (3) heating after be passed through oxidation reactor (1), with its in lower valency load
Oxysome reacts under the high temperature conditions, and the oxygen carrier of lower valency is oxidized to the oxygen carrier of corresponding high-valence state, and air (B) becomes high temperature
Oxygen debt air (A), product separates through the first cyclone separator (5), high temperature is oxygen debt air (A) air inlet preheater
(3) enter air after lowering the temperature, the oxygen carrier of high-valence state enters reduction reactor by the tremie pipe (6) of the first cyclone separator (5)
(4)；
Step 2, the smoke inlet of reduction reactor (4) lower end be passed through the high-temperature flue gas after dedusting, with its in high-valence state
Oxygen carrier reacts under the conditions of high temperature, bubbling fluidization, and the oxygen carrier of high-valence state is reduced into the oxygen carrier of lower valency and discharges
Oxygen, product separates through the second cyclone separator (7), and the oxygen carrier of lower valency is by the overflow launder being provided with loosening air port
(2) return to and realize oxygen carrier in oxidation reactor (1) and recycle, the flue gas containing finite concentration oxygen divides from the second whirlwind
Enter the burner of coal-burning boiler (10) from the upper end outlet of device (7) and coal dust (D) is mixed into hearth combustion；
The high-temperature flue gas (E) that step 3, coal-burning boiler (10) hearth combustion produce, a part is by the stove of coal-burning boiler (10)
Thorax exhaust pass, after hot precipitator (9) dedusting, enters reduction reactor (4) lower end by high-temperature flue gas air-introduced machine (8)
Smoke inlet；Remainder by coal-burning boiler (10) back-end ductwork after cold precipitator (11) dedusting, enter flue gas cold
But compression purification devices (12), obtains liquid carbon dioxide (F), realizes CO2Trapping.
Oxygen carrier described in step one and step 2 is manganio oxygen carrier, cobalt-based oxygen carrier, cuprio oxygen carrier or Ca-Ti ore type
Oxide.
High temperature described in step one is to be controlled at 600～1300 DEG C according to the difference of the interior oxygen carrier of oxidation reactor (1).
High temperature described in step 2 is to be controlled at 700～1350 DEG C according to the difference of the interior oxygen carrier of reduction reactor (4).
Beneficial effects of the present invention：
1st, the present invention will be integrated to chemical chain high temperature making oxygen by air separation and oxygen-enriched combusting pulverized-coal fired boiler, compared with existing boiler, energy
Effectively reduce the oxygen power consumption processed of oxygen-enriched combusting, improve the generating efficiency of oxygen-enriched combusting unit, and enable collecting carbonic anhydride.
2nd, the present invention will be integrated to chemical chain high temperature making oxygen by air separation and oxygen-enriched combusting pulverized-coal fired boiler, with existing cryogenic air separation unit technology
Compare it is not necessary to the sizable air separation plant of volume, both decreased equipment investment, substantially reduce floor space again.
3rd, the present invention will be integrated to chemical chain high temperature making oxygen by air separation and oxygen-enriched combusting pulverized-coal fired boiler, the flue gas that effectively utilizes extract
Temperature, heats reduction reactor, improves heat utilization efficiency.
4th, the present invention will be integrated to chemical chain high temperature making oxygen by air separation and oxygen-enriched combusting pulverized-coal fired boiler, enters boiler-burner
O2/CO2Gas flow temperature is higher, can improve ignition temperature, improves efficiency of combustion and speed.
Brief description
Fig. 1 is the schematic diagram of the oxygen-enriched combusting pulverized-coal fired boiler of integrated chemical chain high temperature making oxygen by air separation of the present invention.
1 oxidation reactor, 2 be provided with the overflow launder in loosening air port, 3 air preheaters, 4 reduction reactors, 5 first whirlwind divide
From device, the tremie pipe of 6 first cyclone separator, 7 second cyclone separator, 8 high-temperature flue gas air-introduced machines, 9 hot precipitators, 10 combustions
Coal burning boiler, 11 cold precipitators, 12 flue gases cool down compression purification devices, the tremie pipes of 13 second cyclone separator, A high temperature is oxygen debt
Air, B air, C preheating after air, D coal dust, E high-temperature flue gas, F liquid carbon dioxide, G slag, H high-temperature flue gas ash, I
Boiler feedwater, J main steam, K high pressure cylinder steam discharge, L reheated steam.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is done and further explain.Following embodiments do not limit in any form
The present invention processed, all technical schemes being obtained by the way of equivalent or equivalent transformation, it is in the protection model of the present invention
Among enclosing.
Traditional oxygen-enriched combusting needs extensive making oxygen by air separation, investment is big, high energy consumption so that oxygen-enriched combustion system economy and
Efficiency of energy utilization declines.Existing several oxygen mode processed, such as Deep Cooling Method, membrane separation process and pressure-variable adsorption, are all first to air
Carry out separating, obtain the oxygen of higher degree, then mixed with SAPMAC method flue gas again, actually needed for fuel combustion simultaneously
Non-real pure oxygen, simply oxygen content is 20～40% oxygen and the mixed gas of carbon dioxide.Additionally, fuel is in oxygen
With the flue gas producing in the atmosphere of carbon dioxide be the carbon dioxide of high concentration it is easy to separating treatment, thus alleviating carbon dioxide
Impact to greenhouse effect.
On the basis of chemical chain high temperature making oxygen by air separation technology is the burning chemistry chains mode based on the proposition eighties in 20th century
Develop, oxygen-enriched combusting with collecting carbonic anhydride have the advantages that it is original, prepared O2/CO2Gaseous mixture, and inherit
The feature of chemical chain burning technology low power consuming, can effectively reduce the oxygen energy consumption processed of oxygen-enriched combusting, improve efficiency of generating unit.Change
Learning chain high temperature making oxygen by air separation needs the energy consuming to be mainly the heat energy of heating, by with being thermally integrated of oxygen-enriched combustion boiler, energy
Effectively reduce oxygen power consumption processed, improve the generating efficiency of oxygen-enriched combusting unit, have and compare vast potential for future development.
Embodiment 1
A kind of oxygen-enriched combusting pulverized-coal fired boiler of integrated chemical chain high temperature making oxygen by air separation, as shown in figure 1, include air preheater
3rd, oxidation reactor 1, the first cyclone separator 5, the overflow launder 2 being provided with loosening air port, reduction reactor 4, the second cyclonic separation
Device 7, high-temperature flue gas air-introduced machine 8, hot precipitator 9, coal-burning boiler 10, cold precipitator 11, flue gas cooling compression purification devices
12.Air preheater 3 is connected with oxidation reactor 1 lower end import, and oxidation reactor 1 lower end side is by being provided with overflowing of loosening air port
Chute 2 is connected with reduction reactor 4, and oxidation reactor 1 upper end outlet and the first cyclone separator 5 are connected, the first cyclonic separation
The upper end outlet of device 5 is connected with air preheater 3, inside the tremie pipe 6 insertion reduction reactor 4 of the first cyclone separator 5；Also
Former reactor 4 upper end outlet and the second cyclone separator 7 are connected, the tremie pipe 13 of the second cyclone separator 7 and reduction reactor 4
Sidepiece is connected, and the upper end outlet of the second cyclone separator 7 is connected with the burner of coal-burning boiler 10；The burner hearth of coal-burning boiler 10 goes out
Mouth flue is provided with flue gas bleeding point and is connected with hot precipitator 9, and hot precipitator 9 is through high-temperature flue gas air-introduced machine 8 and reduction reaction
The smoke inlet of device 4 lower end is connected, and the back-end ductwork of coal-burning boiler 10 is through cold precipitator 11 and flue gas cooling compression purification dress
Put 12 to be connected.
Oxidation reactor 1 is recirculating fluidized bed, and fluidizing agent is air, and according to oxygen carrier in it, (manganio carries reaction temperature
Oxysome, cobalt-based oxygen carrier, cuprio oxygen carrier or perofskite type oxide) 600～1300 DEG C of different choice, reaction pressure is normal
Pressure.
Reduction reactor 4 is bubbling fluidized bed, and fluidizing agent is the high-temperature flue gas after dedusting, and reaction temperature is interior according to it
Oxygen carrier (manganio oxygen carrier, cobalt-based oxygen carrier, cuprio oxygen carrier or perofskite type oxide) 700～1350 DEG C of different choice,
Reaction pressure is normal pressure.
Coal-burning boiler 10 is similar with existing coal-burning boiler, but does not set air preheater.It is provided with multiple gas-water heat-transfer surfaces
Or multiple flue gas-steam heat-exchanging face, boiler feedwater I temperature can be relatively low, and last exhaust gas temperature is also very low.
Embodiment 2
Oxygen-enriched combusting pulverized-coal fired boiler using the integrated chemical chain high temperature making oxygen by air separation described in embodiment 1 carries out CO2Trapping
Method, comprises the steps：
Step one, air B are passed through oxidation reactor 1 by air preheater 3 after being heated, with its in the oxygen carrier of lower valency exist
React at 600～1300 DEG C, the oxygen carrier of lower valency is oxidized to the oxygen carrier of corresponding high-valence state, and it is oxygen debt that air B becomes high temperature
Air A, product separates through the first cyclone separator 5, and high temperature is oxygen debt, and air A air inlet preheater 3 heats air B,
Air is entered, the oxygen carrier of high-valence state enters reduction reactor 4 by the tremie pipe 6 of the first cyclone separator 5 after cooling.Oxygen carrier
Including manganio oxygen carrier, cobalt-based oxygen carrier, cuprio oxygen carrier or perofskite type oxide etc..Manganio oxygen carrier is Mn2O3\
Mn3O4, cobalt-based oxygen carrier is Co3O4CoO, cuprio oxygen carrier be CuO Cu2O, perofskite type oxide has LSCF
(La0.1Sr0.9Co0.5Fe0.5O3-δ)、SCCF(Sr0.5Ca0.5Co0.5Fe0.5O3-δ)、BSCF(Ba0.5Sr0.5Co0.8Fe0.2O3-δ)、
LBCF(La0.3Ba0.7Co0.2Fe0.8O3-δ) etc..Difference according to oxygen carrier in oxidation reactor 1 controls different reaction temperatures.
It is CO that step 2, the smoke inlet of reduction reactor 4 lower end are passed through the main component after dedusting2High-temperature flue gas,
React under the conditions of 700～1350 DEG C, bubbling fluidization with the oxygen carrier of high-valence state in it, the oxygen carrier of high-valence state is reduced into low
The oxygen carrier of valence state simultaneously discharges oxygen, and product separates through the second cyclone separator 7, and the air C after preheating is passed through and sets
The oxygen carrier of lower valency is returned to by the overflow launder 2 having loosening air port to be realized oxygen carrier in oxidation reactor 1 and recycles, and contains
The flue gas of finite concentration oxygen (about 10～15V%) enters the combustion of coal-burning boiler 10 from the upper end outlet of the second cyclone separator 7
Burner and coal dust D are mixed into hearth combustion release heat, and boiler feedwater is heated to be main steam J and by steam turbine high-pressure cylinder
Steam discharge K is heated to be reheated steam L.High pressure cylinder steam discharge K, main steam J, reheated steam L parameter and existing ultra supercritical coal-burning boiler
Close.Slag G after burning discharges outside coal-burning boiler 10.
The high-temperature flue gas E that step 3, coal-burning boiler 10 hearth combustion produce (mainly contains the CO of more than 90V%2With a small amount of
O2、CO、SO2、SO3Deng), a part of high-temperature flue gas E by coal-burning boiler 10 furnace outlet flue through hot precipitator 9 dedusting
Afterwards, temperature is about 1000 DEG C, enters the smoke inlet of reduction reactor 4 lower end, high-temperature flue gas ash by high-temperature flue gas air-introduced machine 8
H is divided to be discharged by hot precipitator；Remainder high-temperature flue gas E, is removed through cold precipitator 11 by the back-end ductwork of coal-burning boiler 10
After dirt, enter flue gas cooling compression purification devices 12, obtain liquid carbon dioxide F, realize CO2Trapping.
Claims (4)
1. a kind of oxygen-enriched combusting pulverized-coal fired boiler of integrated chemical chain high temperature making oxygen by air separation is it is characterised in that include air preheater
（3）, oxidation reactor（1）, the first cyclone separator（5）, be provided with the overflow launder in loosening air port（2）, reduction reactor（4）,
Two cyclone separator（7）, high-temperature flue gas air-introduced machine（8）, hot precipitator（9）, coal-burning boiler（10）, cold precipitator（11）、
Flue gas cooling compression purification devices（12）；Air preheater（3）And oxidation reactor（1）Lower end import is connected, oxidation reactor
（1）Lower end side is by being provided with the overflow launder in loosening air port（2）And reduction reactor（4）It is connected, oxidation reactor（1）Upper end outlet
With the first cyclone separator（5）It is connected, the first cyclone separator（5）Upper end outlet and air preheater（3）It is connected, the first rotation
Wind separator（5）Tremie pipe（6）Insertion reduction reactor（4）Internal；Reduction reactor（4）Upper end outlet and the second whirlwind divide
From device（7）It is connected, the second cyclone separator（7）Tremie pipe（13）And reduction reactor（4）Sidepiece is connected, the second cyclonic separation
Device（7）Upper end outlet and coal-burning boiler（10）Burner be connected；Coal-burning boiler（10）Furnace outlet flue be provided with flue gas
Bleeding point and hot precipitator（9）It is connected, hot precipitator（9）Through high-temperature flue gas air-introduced machine（8）With reduction reactor（4）Lower end
Smoke inlet be connected, coal-burning boiler（10）Back-end ductwork through cold precipitator（11）Cool down compression purification devices with flue gas
（12）It is connected；
Oxidation reactor（1）For recirculating fluidized bed, fluidizing agent is air；Reduction reactor（4）For bubbling fluidized bed, fluidisation Jie
Matter is the high-temperature flue gas after dedusting；Coal-burning boiler（10）Do not set air preheater, be provided with multiple gas-water heat-transfer surfaces or multiple cigarette
Gas-steam heat-exchanging face.
2. carry out CO using the oxygen-enriched combusting pulverized-coal fired boiler of the integrated chemical chain high temperature making oxygen by air separation described in claim 12Trapping side
Method is it is characterised in that comprise the steps：
Step one, air（B）By air preheater（3）It is passed through oxidation reactor after heating（1）, with its in lower valency oxygen carrier
React under the high temperature conditions, the oxygen carrier of lower valency is oxidized to the oxygen carrier of corresponding high-valence state, air（B）Become high temperature oxygen debt
Air（A）, product is through the first cyclone separator（5）Separate, high temperature is oxygen debt air（A）Air inlet preheater（3）Fall
Air is entered, the oxygen carrier of high-valence state is by the first cyclone separator after temperature（5）Tremie pipe（6）Enter reduction reactor（4）；Carry
Oxysome includes manganio oxygen carrier, cobalt-based oxygen carrier, cuprio oxygen carrier or perofskite type oxide；Manganio oxygen carrier is Mn2O3\
Mn3O4, cobalt-based oxygen carrier is Co3O4CoO, cuprio oxygen carrier be CuO Cu2O, perofskite type oxide has
La0.1Sr0.9Co0.5Fe0.5O3-δ、Sr0.5Ca0.5Co0.5Fe0.5O3-δ、Ba0.5Sr0.5Co0.8Fe0.2O3-δ、
La0.3Ba0.7Co0.2Fe0.8O3-δ；
Step 2, reduction reactor（4）The smoke inlet of lower end is passed through the high-temperature flue gas after dedusting, with its in high-valence state oxygen carrier
Body reacts under the conditions of high temperature, bubbling fluidization, and the oxygen carrier of high-valence state is reduced into the oxygen carrier of lower valency and discharges oxygen,
Product is through the second cyclone separator（7）Separate, the oxygen carrier of lower valency is by the overflow launder being provided with loosening air port（2）Return
To oxidation reactor（1）Inside realize oxygen carrier to recycle, containing the flue gas for 10 ~ 15V% for the oxygen concentration from the second cyclonic separation
Device（7）Upper end outlet enter coal-burning boiler（10）Burner and coal dust（D）Be mixed into hearth combustion, by boiler feedwater plus
Heat is main steam（J）And by steam turbine high-pressure cylinder steam discharge（K）It is heated to be reheated steam（L）；High pressure cylinder steam discharge（K）, main steam
（J）, reheated steam（L）Parameter is close with existing ultra supercritical coal-burning boiler；Slag after burning（G）Discharge coal-burning boiler（10）
Outward；
Step 3, coal-burning boiler（10）The high-temperature flue gas that hearth combustion produces（E）, a part is by coal-burning boiler（10）Burner hearth go out
Mouth flue is through hot precipitator（9）After dedusting, by high-temperature flue gas air-introduced machine（8）Enter reduction reactor（4）The cigarette of lower end
Gas entrance；Remainder is by coal-burning boiler（10）Back-end ductwork through cold precipitator（11）After dedusting, enter flue gas cooling pressure
Contracting purification devices（12）, obtain liquid carbon dioxide（F）, realize CO2Trapping.
3. the oxygen-enriched combusting pulverized-coal fired boiler of integrated chemical chain high temperature making oxygen by air separation according to claim 2 carries out CO2Trapping side
Method is it is characterised in that high temperature described in step one is according to oxidation reactor（1）The difference of interior oxygen carrier controls 600～1300
℃.
4. the oxygen-enriched combusting pulverized-coal fired boiler of integrated chemical chain high temperature making oxygen by air separation according to claim 2 carries out CO2Trapping side
Method is it is characterised in that high temperature described in step 2 is according to reduction reactor（4）The difference of interior oxygen carrier controls 700～1350
℃.
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| CN201410253805.7A CN104033890B (en) | 2014-06-10 | 2014-06-10 | Oxygen-enriched combustion pulverized coal boiler integrating chemical-looping high-temperature air separation oxygen production and CO2 gathering method |
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