CN109337715A - A biomass gasification power generation system and method - Google Patents
A biomass gasification power generation system and method Download PDFInfo
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- CN109337715A CN109337715A CN201811284197.0A CN201811284197A CN109337715A CN 109337715 A CN109337715 A CN 109337715A CN 201811284197 A CN201811284197 A CN 201811284197A CN 109337715 A CN109337715 A CN 109337715A
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- 239000002028 Biomass Substances 0.000 title claims abstract description 94
- 238000002309 gasification Methods 0.000 title claims abstract description 44
- 238000010248 power generation Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 191
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 96
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 96
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 238000002485 combustion reaction Methods 0.000 claims abstract description 42
- 239000001301 oxygen Substances 0.000 claims abstract description 42
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 42
- 238000000746 purification Methods 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims description 52
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000002737 fuel gas Substances 0.000 claims description 15
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000567 combustion gas Substances 0.000 claims description 5
- 239000008246 gaseous mixture Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims 2
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- QVGXLLKOCUKJST-BJUDXGSMSA-N oxygen-15 atom Chemical compound [15O] QVGXLLKOCUKJST-BJUDXGSMSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
本发明提供了一种生物质气化发电系统，包括生物质气化子系统和半闭式超临界二氧化碳循环子系统；生物质气化子系统包括加料装置、生物质气化炉、燃气净化冷却装置、氧气源、气化炉给氧压缩机、燃烧室给氧压缩机、水力透平、燃气压缩机等。超临界二氧化碳循环子系统包括第一二氧化碳泵、中间冷却器、第二二氧化碳泵、回热器、燃烧室、透平、发电机、冷却器、水分离器、冷凝器、二氧化碳收集装置等。本发明还提供了一种生物质气化发电方法。本发明系统效率高、半闭式超临界二氧化碳循环工作于高温高压参数，发电效率高；二氧化碳负排放，不需要额外的捕碳装置；系统简单、结构紧凑、运行灵活，可形成无烟囱的小型或大型的生物质气化发电厂。
The invention provides a biomass gasification power generation system, which includes a biomass gasification subsystem and a semi-closed supercritical carbon dioxide cycle subsystem; the biomass gasification subsystem includes a feeding device, a biomass gasifier, and a gas purification and cooling system. Equipment, oxygen source, gasifier oxygen supply compressor, combustion chamber oxygen supply compressor, hydraulic turbine, gas compressor, etc. The supercritical carbon dioxide circulation subsystem includes a first carbon dioxide pump, an intercooler, a second carbon dioxide pump, a regenerator, a combustion chamber, a turbine, a generator, a cooler, a water separator, a condenser, a carbon dioxide collection device, and the like. The invention also provides a biomass gasification power generation method. The system of the invention has high efficiency, the semi-closed supercritical carbon dioxide cycle works under high temperature and high pressure parameters, and the power generation efficiency is high; carbon dioxide is negatively discharged, and no additional carbon capture device is required; the system is simple, compact in structure, flexible in operation, and can form a small chimney-free Or large biomass gasification power plants.
Description
Technical field
The present invention relates to a kind of Biomass Gasification And Power Generation System and methods, belong to technical field of new energy power generation.
Background technique
The report of Intergovernmental Panel on Climate Change (IPCC) publication claims, if Global Greenhouse Effect is with existing
There is speed development, between the year two thousand thirty to 2052, world's temperature on average will be 1.5 degree higher than before the industrial revolution.Zero carbon discharge as a result,
The fast-developing of power technology will become urgent social demand.
Biomass is important one of renewable energy, with resourceful, renewable, distributional region is wide, atmosphere pollution
The advantages that object discharge is few, is greatly developing biomass energy sources for generating electricity technology both at home and abroad.Biomass generation mainly has directly
Combustion power generation is mixed and burned power generation, pyrolytic gasification power generation and four class of marsh gas power generation, wherein biomass pyrogenation gasification combined cycle
The generating efficiency of electricity generation system is high, represents the advanced level of Biomass Gasification & Power Generation.But whether biomass power generation is real
Carbon dioxide zero discharge generation mode, it is still disputable in industry, because of the actually biomass electric power plant cigarette that still has discharge flue gas
Chimney.
In recent years, it have developed rapidly by the power cycle technology of working medium of supercritical carbon dioxide, in particular, being fired using pure oxygen
Direct-fired half-closed supercritical carbon dioxide circulation is burnt, the advantages of having both efficiency power generation and inexpensively catch carbon, and system letter
It is single, compact-sized, flexibility is good.Biological fuel gas can be used as the fuel of half-closed supercritical carbon dioxide, and the latter can be very
It is conveniently separated water outlet and extra carbon dioxide, water can be used as the gasifying agent of biomass gasifying furnace, and carbon dioxide can be received directly
Collection is for other purposes or seals up for safekeeping.It therefore, can using the Biomass Gasification And Power Generation System that half-closed supercritical carbon dioxide recycles
It realizes carbon dioxide zero discharge, or perhaps negative emission, there is very high social benefit.
How biomass gasification system and the half-closed supercritical carbon dioxide circulatory system are carried out integrated being this field skill
Art personnel are dedicated to the problem solved.Such electricity generation system there are no relevant report in industry.
Summary of the invention
The technical problem to be solved by the present invention is how to be followed to biomass gasification system and half-closed supercritical carbon dioxide
Loop system is integrated, and negative carbon row, efficient electricity generation system are formed.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of Biomass Gasification And Power Generation System,
It is characterized in that: including half-closed supercritical carbon dioxide cycle subsystem and biogas sub-systems；
The half-closed supercritical carbon dioxide cycle subsystem includes the first carbon dioxide pump, and the first carbon dioxide pumps out
Mouth connection intercooler import, intercooler outlet the second carbon dioxide pump inlet of connection, the second carbon dioxide pump discharge
The side-entrance of regenerator low temperature is connected, regenerator low temperature side outlet connects the side-entrance of combustion chamber working medium, and combustor exit connects turbine
Import, turbine connect generator, turbine outlet connection the side-entrance of regenerator high temperature, regenerator high temperature side outlet connect cooler into
Mouthful, cooler outlet connects separator import, separator outlet connection condenser inlet, and condensator outlet divides two-way, point
The first carbon dioxide pump inlet and carbon dioxide collecting device import are not connected；
The biogas sub-systems include feeding device, and feeding device outlet connects biomass gasifying furnace feed inlet,
Biomass gasification furnace gas outlet connection gas-purification cooling device fuel gas inlet；Source of oxygen outlet is divided into two-way, is separately connected
Biomass gasifying furnace oxygen supply compressor inlet and combustion chamber oxygen supply compressor inlet；
Gas-purification cooling device is equipped with fuel gas inlet and gas outlet, sets that there are four preheatings inside gas cleaning device
Device, respectively the first preheater, the second preheater, third preheater, the 4th preheater；
Combustion chamber oxygen supply compressor outlet connects the first preheater import, and the first preheater outlet connection is half-closed overcritical
The oxygen inlet of the combustion chamber of carbon dioxide recycle subsystem；
Gas-purification cooling device gas outlet connects gas compressor import, the second preheating of gas compressor outlet connection
Device import, the outlet of the second preheater connect the fuel gas inlet of the combustion chamber of half-closed supercritical carbon dioxide cycle subsystem.
Biomass gasifying furnace oxygen supply compressor outlet connects the import of third preheater, third preheater outlet connection biomass
Gasification furnace gasifying agent import.
The water out of the separator of half-closed supercritical carbon dioxide cycle subsystem connects hydraulic turbine import, waterpower
Turbine outlet the 4th preheater import of connection, the 4th preheater outlet connection biomass gasifying furnace gasifying agent import.
Preferably, the 4th preheater outlet connects gasification of biomass furnace gas after converging with third preheater outlet
Agent import.
Preferably, the biomass gasifying furnace is compression type fluidized bed, and pressure is 1MPa or more.
Preferably, the gasifying agent of the biomass gasifying furnace is the gaseous mixture of pure oxygen and steam.
The present invention also provides a kind of Biomass Gasification & Power Generation methods, it is characterised in that: uses above-mentioned gasification of biomass
Electricity generation system, step are as follows:
Biomass is sent into biomass gasifying furnace by feeding device, and pure oxygen and mixture of steam agent inject gasification of biomass
Furnace, biomass enter gas-purification cooling device through the thick combustion gas that biomass gasifying furnace generates, are formed after purified, cooling clear
The combustion chamber of the clean half-closed supercritical carbon dioxide circulation of fuel gas supply；
Oxygen all the way from source of oxygen is used as gasifying agent, through biomass gasifying furnace oxygen supply compressor boost to biogas
Change furnace authorized pressure, then the preheating of the third preheater through gas-purification cooling device；It is followed from half-closed supercritical carbon dioxide
The water of the separator of ring is depressurized to biomass gasifying furnace authorized pressure through hydraulic turbine, and pressure recovery can after through gas-purification
4th preheater of cooling device heats vaporization, and the oxygen then come out with the third preheater of gas-purification cooling device converges
Into biomass gasifying furnace；
The clean gas that gas-purification cooling device comes out is pressurized through gas compressor and through gas-purification cooling device
Enter combustion chamber after the preheating of second preheater, the another way oxygen that source of oxygen comes out is through combustion chamber oxygen supply compressor boost and through firing
The first preheater that gas purifies cooling device enters combustion chamber after preheating；
Liquid CO 2 working medium is pressurized by the first carbon dioxide pump, while carbon dioxide Temperature of Working increases, through centre
After cooler cooling, then by the pressurization of the second carbon dioxide pump, pressurized carbon dioxide working medium is heated through regenerator, enters back into combustion
Room is burnt to be heated by fuel gas buring；The gaseous mixture of combustion chamber discharge enters turbine expansion acting, and pushing generator generates electric power；Turbine
Exhaust discharges waste heat through regenerator, then cooling through cooler, is dehumidified by separator, is most cooled to liquid through condenser afterwards；
Wherein, extra carbon dioxide storage returns to the first carbon dioxide pump in carbon dioxide collecting device, remaining carbon dioxide.
Preferably, the second carbon dioxide pump discharge pressure is 15MPa or more.
Preferably, the turbine import Temperature of Working is 800 DEG C or more.
Preferably, the turbine exhaust temperature is 750 DEG C hereinafter, turbine exhaust pressure is 5~7MPa.
Preferably, the component of the combustion chamber and the higher temperature in turbine passes through the carbon dioxide of the lower temperature extracted
Working medium is cooling.
Preferably, the carbon dioxide that the carbon dioxide collecting device is collected is used for industrial use, enhanced oil exploitation
Or it is sealed up for safekeeping.
Compared with prior art, Biomass Gasification And Power Generation System provided by the invention has the following beneficial effects:
1, system effectiveness is high, and for half-closed supercritical carbon dioxide cycle operation in high temperature and pressure parameter, generating efficiency is high；
2, carbon dioxide negative emission, half-closed supercritical carbon dioxide, which recycles, uses pure oxygen burning, in biological fuel gas
Carbon dioxide in carbon dioxide and combustion product can be collected directly by the circulatory system, and additional carbon capture device is not needed；
3, system is simple, compact-sized, flexible operation, can form the small-sized or large-scale Biomass Gasification & Power Generation of chimney-free
Factory.
Detailed description of the invention
Fig. 1 is Biomass Gasification And Power Generation System schematic diagram provided in this embodiment；
Description of symbols:
The first carbon dioxide pump of 1-, 2- intercooler, the second carbon dioxide pump of 3-, 4- regenerator, the combustion chamber 5-, 6- are saturating
It is flat, 7- generator, 8- cooler, 9- separator, 10- condenser, 11- carbon dioxide collecting device, 12- feeding device, 13-
Biomass gasifying furnace, 14- gas-purification cooling device, 15- source of oxygen, 16- biomass gasifying furnace is to oxygen compressor, 17- burning
Room is to oxygen compressor, 18- hydraulic turbine, 19- gas compressor, the first preheater of 141-, the second preheater of 142-, 143- third
Preheater, the 4th preheater of 144-.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
Fig. 1 is Biomass Gasification And Power Generation System schematic diagram provided in this embodiment, the Biomass Gasification And Power Generation System
Including biogas sub-systems and half-closed supercritical carbon dioxide cycle subsystem.
Biogas sub-systems include feeding device 12, and the outlet connection biomass gasifying furnace 13 of feeding device 12 is fed
Mouthful, 13 gas outlet of biomass gasifying furnace connects 14 fuel gas inlet of gas-purification cooling device.The outlet of source of oxygen 15 is divided into two-way,
Connection biomass gasifying furnace gives oxygen compressor 16 import all the way, and another way connection combustion chamber gives oxygen compressor 17 import.
Gas-purification cooling device 14 is equipped with fuel gas inlet and gas outlet, is equipped with four inside gas-purification cooling device 14
A preheater, respectively the first preheater 141, the second preheater 142, third preheater 143, the 4th preheater 144, four pre-
The medium being heated is walked in hot device, is low temperature side.
Combustion chamber exports connection 141 import of the first preheater, the first preheater 141 outlet connection semi-closure to oxygen compressor 17
The oxygen inlet of the combustion chamber 5 of formula supercritical carbon dioxide cycle subsystem.
14 gas outlet of gas-purification cooling device connects 19 import of gas compressor, the outlet of gas compressor 19 connection the
Two preheaters, 142 import, the outlet of the second preheater 142 connect the combustion chamber 5 of half-closed supercritical carbon dioxide cycle subsystem
Fuel gas inlet.
Biomass gasifying furnace give oxygen compressor 16 outlet connection 143 import of third preheater, third preheater 143 outlet with
The outlet of 4th preheater 144 connects 13 gasifying agent import of biomass gasifying furnace after converging.
The water out of the separator 9 of half-closed supercritical carbon dioxide cycle subsystem connects 18 import of hydraulic turbine,
The outlet of hydraulic turbine 18 connection 144 import of the 4th preheater, the outlet of the 4th preheater 144 converge with the outlet of third preheater 143
13 gasifying agent import of biomass gasifying furnace is connected afterwards.
The half-closed supercritical carbon dioxide cycle subsystem includes the first carbon dioxide pump 1, the first carbon dioxide pump 1
Outlet connection 2 import of intercooler, the outlet of intercooler 2 connection 3 import of the second carbon dioxide pump, the second carbon dioxide pump
3 outlet connection 4 low temperature side-entrances of regenerator, 4 low temperature side outlet of regenerator connect 5 working medium side-entrance of combustion chamber, and combustion chamber 5 exports
6 import of turbine is connected, turbine 6 connects generator 7, the outlet of turbine 6 connection 4 high temperature side-entrance of regenerator, and 4 high temperature side of regenerator goes out
8 import of mouth connection cooler, the outlet of cooler 8 connection 9 import of separator, the outlet of separator 9 connection 10 import of condenser,
The outlet of condenser 10 divides two-way, is separately connected 11 import of 1 import of the first carbon dioxide pump and carbon dioxide collecting device.
It is connected between each equipment of Biomass Gasification And Power Generation System provided in this embodiment by pipeline, according to system control
System needs, and can also arrange the equipment such as valve, instrument on pipeline.It may also include auxiliary equipment, electrical system, control system in system
Deng.
Specific step is as follows when Biomass Gasification And Power Generation System provided in this embodiment uses:
Biomass is sent into biomass gasifying furnace 13 by feeding device 12, and pure oxygen and mixture of steam agent inject biomass
Gasification furnace 13,13 pressure of biomass gasifying furnace are 2MPa, and biomass enters combustion gas through the thick combustion gas that biomass gasifying furnace 13 generates
Cooling device 14 is purified, the clean gas formed after purified, cooling supplies the burning of half-closed supercritical carbon dioxide circulation
Room 5；
Oxygen all the way from source of oxygen 15 is used as gasifying agent, is pressurized to biology to oxygen compressor 16 through biomass gasifying furnace
13 pressure 2MPa of matter gasification furnace, then the third preheater 143 through gas-purification cooling device 14 preheat.From half-closed overcritical
The water of the separator 9 of carbon dioxide recycle is depressurized to 13 pressure 2MPa of biomass gasifying furnace through hydraulic turbine 18, and recycles pressure
Power can after the 4th preheater 144 through gas-purification cooling device 14 heat vaporization, then with gas-purification cooling device 14
The oxygen that third preheater 143 comes out converges into biomass gasifying furnace 13.
The clean gas that gas-purification cooling device 14 comes out is pressurized through gas compressor 19 and fills through gas-purification is cooling
Enter combustion chamber 5 after setting 14 the second preheater 142 preheating, the another way oxygen that source of oxygen 15 comes out is compressed through combustion chamber oxygen supply
The pressurization of machine 17 simultaneously enters combustion chamber 5 after the preheating of the first preheater 141 of gas-purification cooling device 14.First carbon dioxide pump
Liquid CO 2 working medium is pressurized to 15MPa by 1, while carbon dioxide Temperature of Working increases, after the cooling of intercooler 2,
35MPa is pressurized to by the second carbon dioxide pump 3 again, pressurized carbon dioxide working medium is heated through regenerator 4, enters back into combustion chamber
5 are heated to 1100 DEG C by fuel gas buring.The gaseous mixture that combustion chamber 5 is discharged enters turbine 6 and is expanded to 6MPa, and turbine 6 pushes power generation
Machine 7 generates electric power, and the exhaust of turbine 6 discharges waste heat through regenerator 4, then cooling through cooler 8, is dehumidified by separator 9, finally
Liquid is cooled to through condenser 10.Wherein, extra carbon dioxide storage is in carbon dioxide collecting device 11, remaining titanium dioxide
Carbon returns to the first carbon dioxide pump 1.The carbon dioxide that carbon dioxide collecting device 11 is collected can be used for industrial use, reinforced stone
Oil exploitation is sealed up for safekeeping.Processing can be recycled after extra water discharge system.
Biomass Gasification And Power Generation System of the invention does not discharge the chimney of flue gas, and biomass combustion product is all received
Collection, carbon dioxide is not to atmosphere discharge, it can be achieved that negative carbon is arranged.
Although it should be understood that herein may usage amount term " first ", " second " etc. each unit is described,
But these units should not be limited by these terms.The use of these items is only for by a unit and another unit
It distinguishes.For example, without departing substantially from the range of exemplary embodiment, it is single that first unit can be referred to as second
Member, and similarly second unit can be referred to as first unit.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of Biomass Gasification And Power Generation System, it is characterised in that: including half-closed supercritical carbon dioxide cycle subsystem and
Biogas sub-systems；
The half-closed supercritical carbon dioxide cycle subsystem includes the first carbon dioxide pump (1), the first carbon dioxide pump (1)
Outlet connection intercooler (2) import, intercooler (2) outlet connection the second carbon dioxide pump (3) import, the second dioxy
Change carbon pump (3) outlet connection regenerator (4) low temperature side-entrance, regenerator (4) low temperature side outlet connect combustion chamber (5) working medium side into
Mouthful, combustion chamber (5) outlet connection turbine (6) import, turbine (6) connects generator (7), turbine (6) outlet connection regenerator (4)
High temperature side-entrance, regenerator (4) high temperature side outlet connect cooler (8) import, cooler (8) outlet connection separator (9)
Import, separator (9) outlet connection condenser (10) import, condenser (10) outlet divides two-way, is separately connected the first dioxy
Change carbon pump (1) import and carbon dioxide collecting device (11) import；
The biogas sub-systems include feeding device (12), feeding device (12) outlet connection biomass gasifying furnace (13)
Feed inlet, biomass gasifying furnace (13) gas outlet connect gas-purification cooling device (14) fuel gas inlet；Source of oxygen (15) goes out
Mouth is divided into two-way, is separately connected biomass gasifying furnace to oxygen compressor (16) import and combustion chamber and gives oxygen compressor (17) import；
Gas-purification cooling device (14) is equipped with fuel gas inlet and gas outlet, is equipped with four inside gas-purification cooling device (14)
A preheater, respectively the first preheater (141), the second preheater (142), third preheater (143), the 4th preheater
(144)；
Combustion chamber exports connection the first preheater (141) import, the first preheater (141) outlet connection half to oxygen compressor (17)
The oxygen inlet of the combustion chamber (5) of enclosed supercritical carbon dioxide cycle subsystem；
Gas-purification cooling device (14) gas outlet connects gas compressor (19) import, gas compressor (19) outlet connection
Second preheater (142) import, the second preheater (142) outlet connect the combustion of half-closed supercritical carbon dioxide cycle subsystem
Burn the fuel gas inlet of room (5).
Biomass gasifying furnace exports connection third preheater (143) import, third preheater (143) outlet to oxygen compressor (16)
Connect biomass gasifying furnace (13) gasifying agent import.
The water out of the separator (9) of half-closed supercritical carbon dioxide cycle subsystem connects hydraulic turbine (18) import,
Hydraulic turbine (18) outlet the 4th preheater (144) import of connection, the 4th preheater (144) outlet connection biomass gasifying furnace
(13) gasifying agent import.
2. a kind of Biomass Gasification And Power Generation System as described in claim 1, it is characterised in that: the 4th preheater (144)
Outlet connects biomass gasifying furnace (13) gasifying agent import after converging with the third preheater (143) outlet.
3. a kind of Biomass Gasification And Power Generation System as described in claim 1, it is characterised in that: the biomass gasifying furnace (13)
For compression type fluidized bed, pressure is 1MPa or more.
4. a kind of Biomass Gasification And Power Generation System as described in claim 1, it is characterised in that: the gas of the biomass gasifying furnace
Agent is the gaseous mixture of pure oxygen and steam.
5. a kind of Biomass Gasification & Power Generation method, it is characterised in that: using such as the described in any item biomass of Claims 1 to 4
Gasification power generation system, step are as follows:
Biomass is sent into biomass gasifying furnace (13) by feeding device (12), and pure oxygen and mixture of steam agent inject biomass
Gasification furnace (13), the thick combustion gas that biomass is generated through biomass gasifying furnace (13) enters gas-purification cooling device (14), through net
The clean gas change, formed after cooling supplies the combustion chamber (5) of half-closed supercritical carbon dioxide circulation；
Oxygen all the way from source of oxygen (15) is used as gasifying agent, is pressurized to biology to oxygen compressor (16) through biomass gasifying furnace
Matter gasification furnace (13) authorized pressure, then the preheating of the third preheater (143) through gas-purification cooling device (14)；From half-closed
The water of the separator (9) of supercritical carbon dioxide circulation is depressurized to biomass gasifying furnace (13) regulation pressure through hydraulic turbine (18)
Power, and pressure recovery can after the 4th preheater (144) through gas-purification cooling device (14) heat vaporization, it is then net with combustion gas
Change the oxygen of the third preheater (143) of cooling device (14) out to converge into biomass gasifying furnace (13)；
The clean gas that gas-purification cooling device (14) comes out is pressurized through gas compressor (19) and fills through gas-purification is cooling
Enter combustion chamber (5) after setting the second preheater (142) preheating of (14), the another way oxygen that source of oxygen (15) comes out is through combustion chamber
It is pressurized to oxygen compressor (17) and enters combustion chamber after the preheating of the first preheater (141) of gas-purification cooling device (14)
(5)；
Liquid CO 2 working medium is pressurized by the first carbon dioxide pump (1), while carbon dioxide Temperature of Working increases, through intermediate cold
But after device (2) cooling, then by the second carbon dioxide pump (3) pressurization, pressurized carbon dioxide working medium is heated through regenerator (4),
Combustion chamber (5) is entered back into be heated by fuel gas buring；The gaseous mixture of combustion chamber (5) discharge enters turbine (6) expansion work, pushes hair
Motor (7) generates electric power；Turbine (6) exhaust discharges waste heat through regenerator (4), then cooling through cooler (8), passes through separator
(9) it dehumidifies, is most cooled to liquid through condenser (10) afterwards；Wherein, extra carbon dioxide storage is in carbon dioxide collecting device
(11), remaining carbon dioxide returns to the first carbon dioxide pump (1).
6. a kind of Biomass Gasification & Power Generation method as claimed in claim 5, it is characterised in that: second carbon dioxide pump
(3) outlet pressure is 15MPa or more.
7. a kind of Biomass Gasification & Power Generation method as claimed in claim 5, it is characterised in that: turbine (6) the import working medium
Temperature is 800 DEG C or more.
8. a kind of Biomass Gasification & Power Generation method as claimed in claim 5, it is characterised in that: turbine (6) delivery temperature
For 750 DEG C hereinafter, turbine (6) pressure at expulsion is 5~7MPa.
9. a kind of Biomass Gasification & Power Generation method as claimed in claim 5, it is characterised in that: the combustion chamber (5) and turbine
(6) component of the higher temperature in is cooling by the carbon dioxide working medium of the lower temperature extracted.
10. a kind of Biomass Gasification & Power Generation method as claimed in claim 5, it is characterised in that: the carbon dioxide collection dress
The carbon dioxide of (11) collection is set for industrial use, enhanced oil exploitation or is sealed up for safekeeping.
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