CN106837443A - The supercritical carbon dioxide power circulation system and method for a kind of direct combustion heating - Google Patents
The supercritical carbon dioxide power circulation system and method for a kind of direct combustion heating Download PDFInfo
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- CN106837443A CN106837443A CN201710062574.5A CN201710062574A CN106837443A CN 106837443 A CN106837443 A CN 106837443A CN 201710062574 A CN201710062574 A CN 201710062574A CN 106837443 A CN106837443 A CN 106837443A
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- Prior art keywords
- carbon dioxide
- regenerator
- pump
- outlet
- turbine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses the supercritical carbon dioxide power circulation system and method for a kind of direct combustion heating.The system includes pump, and the outlet connection regenerator of pump, the low-pressure side of regenerator connects the first cooler, separator, compressor, the second cooler, gas separator, and the bottom of gas separator connects the entrance of pump；The high-pressure side of regenerator passes sequentially through burner, turbine and forms loop, and turbine is connected with generator.Method is：Sent into regenerator after by pump, carbon dioxide is pressurized, carbon dioxide delivers to burner after regenerator heating, high temperature blending agent enters turbine pushing generator, turbine outlet blending agent enters regenerator, blending agent after heat exchange enters cooler by aqueous, by the way that after separator, gas medium enters compressor.Discharged nitrous oxides of the invention can both be controlled by being controlled by the post processing of discharge gas in combustion, or directly be discharged under conditions of permission.
Description
Technical field
The present invention relates to the supercritical carbon dioxide power circulation system and method for a kind of direct combustion heating.
Background technology
Cleaning, efficient, economy are the core objectives that generation technology progress is pursued, and find new energy form and substitute tradition
Fossil energy and develop new, more advanced energy conversion regime be the both direction for realizing this target.The world today, changes
Stone fuel power generation function will for a long time occupy the principal status of public economy of electric structure, so improve generating efficiency, reduction are discharged, reduction is generated electricity into
Originally it is the Main way of technological innovation.
In recent years, supercritical carbon dioxide power cycle turns into study hotspot, and is considered to have many potential advantages.
The critical point of carbon dioxide is 31 DEG C/7.4MPa, and the state in temperature and pressure postcritical is above-critical state.It is overcritical
The research of carbon dioxide power cycle starts from last century the forties, obtains interim achievement in research in the 60 to 70's, afterwards
Mainly due to turbomachinery, compact heat exchanger manufacturing technology is immature and stops, until the beginning of this century, overcritical titanium dioxide
The research of carbon power cycle is risen once again in the U.S., and other countries are of interest for the world.Because carbon dioxide chemistry property is steady
Fixed, density is high, non-toxic, inexpensive, the circulatory system is simple, compact conformation, efficiency high, supercritical carbon dioxide power cycle quilt
Think have in fields such as thermal power generation, generation Ⅳ generating, light-focusing type solar generating, cogeneration, geothermal power generations
Good application prospect.
Supercritical carbon dioxide power cycle has two ways：One is direct combustion heating mode (half-closed), between two are
Connect mode of heating (enclosed).The characteristics of direct combustion heating is circulated is that supercritical carbon dioxide is directly added by combustion gas in the burner
Heat to high temperature, combustion product is discharged or collected in the handling process after turbine outlet；The characteristics of indirectly heat is circulated is super facing
Boundary's carbon dioxide absorbs heat, indirectly heat to high temperature by heat exchanger from thermal source, and working medium does not contact heat source medium, thermal source and
Power cycle is relatively independent system.The turbine inlet temperature of indirectly heat circulation is circulated less than direct combustion heating.Two kinds
The common ground of endless form is to be compressed to reduce acting using backheat means, and Near The Critical Point, and this is that it has Gao Xun
Two key factors of ring efficiency.
The supercritical carbon dioxide power cycle of direct combustion heating can reach operating temperature higher, be conducive to fully
The high efficiency advantage of supercritical carbon dioxide power cycle is played, and the combustion product handling process of rear end is simple, is expected to replace
For integrated gasification combined cycle plants and gas theory, realization is than gas turbine-steam turbine generating higher efficiency and more
Low emission.At present, studied in industry it is more be using pure oxygen burning rather than air burning, to avoid producing nitrogen oxides, but
Thus the problem brought is to need in system to be equipped with air-separating plant to supply oxygen, and air-separating plant is made in whole system
Occupy larger ratio in valency.
The content of the invention
The technical problems to be solved by the invention are how to directly heat overcritical titanium dioxide using the method for air burning
Carbon makes its power cycle.
In order to solve the above-mentioned technical problem, the technical scheme is that there is provided a kind of the overcritical of direct combustion heating
Carbon dioxide power circulation system, it is characterised in that including pump, the entrance of the outlet connection regenerator low-pressure side of pump, regenerator
The outlet of low-pressure side is sequentially connected the first cooler, separator, compressor, the second cooler, gas separator, separator
Bottom is provided with drain port, and exhaust outlet is provided with the top of gas separator, and bottom connects the entrance of pump；The high-pressure side of regenerator is successively
Loop is formed by burner, turbine, burner is provided with gas fuel inlet, air intake, and turbine is connected with generator.
Preferably, the exit of the pump is provided with CO2 emission mouthful or/and porch is provided with CO2 emission
Mouth two.
The effect of each part is as follows：
Pump, for the carbon dioxide of liquid to be pressurized into high pressure, the entrance and exit of pump is respectively equipped with CO2 emission
Mouthful, can be used to collect the excessive carbon dioxide that burning is produced, the carbon dioxide temperature of two floss hole discharges is different with pressure；
With high pressure side-entrance, high pressure side outlet, low pressure side-entrance, low side outlets regenerator, pump produce high pressure
Carbon dioxide is exported to burner, the low pressure CO 2 warp of turbine discharge after entering via high pressure side-entrance from high pressure side outlet
Exported to the first cooler from low side outlets after being entered by low pressure side-entrance；
Burner, while being input into the carbon dioxide from regenerator, gaseous fuel, air, fuel is produced with air burning
Heat carbon dioxide, in burner outlet, carbon dioxide working medium and combustion product and other residual gas reach setting
Temperature, is then output to turbine；
Turbine, is connected with generator, and the blending agent for producing that does work is input into regenerator via low pressure side-entrance；
First cooler, for the blending agent of the low side outlets output of cooling back-heating device, is changed into water therein
Liquid；
Separator, the water from the blending agent of the first cooler is separated with gas, and the water after separation is by hydrophobic
Mouth is collected, and the gas after separation enters compressor；
Compressor, for gaseous carbon dioxide to be pressurized to more than critical pressure；
Second cooler, compressor blending agent is come from for cooling down, and makes carbon dioxide transitions therein be liquid；
Gas separator, the carbon dioxide from the blending agent of the second cooler is separated with gas, the gas after separation
Body (main component is nitrogen) is collected by exhaust outlet, and the carbon dioxide after separation enters pump.
Present invention also offers a kind of method of the supercritical carbon dioxide power cycle of direct combustion heating, its feature exists
In using the supercritical carbon dioxide power circulation system of above-mentioned direct combustion heating, concretely comprising the following steps：By pump by carbon dioxide
Sent into regenerator after supercharging, from high pressure after the blending agent heating that carbon dioxide is sent into regenerator from low pressure side-entrance
Side outlet delivers to burner, and fuel combustion produces heat and combustion product, the outlet of high temperature blending agent spontaneous combustion burner in burner
Into turbine acting and pushing generator, turbine outlet blending agent enters regenerator by low pressure side-entrance, the mixing after heat exchange
Medium enters the first cooler by aqueous, and by the way that after separator, water is discharged from drain port and collected, gas medium enters compression
Machine is pressurized, and the blending agent of compressor outlet makes co 2 liquefaction through the second cooler, and in gas separator, gas passes through
Exhaust outlet is discharged or collected, and liquid CO 2 enters pump, and what unnecessary carbon dioxide can be set by pump discharge or entrance can
Select CO2 emission mouthful one or optional CO2 emission mouthful, two collections.
Preferably, carbon dioxide is pressurized to 25-35MPa by the pump.
Preferably, the burner can be by drawing one in pump discharge to the carbon dioxide pipeline between regenerator outlet
Bypass is cooled down.
Preferably, the turbine can be by drawing on one side in pump discharge to the carbon dioxide pipeline between regenerator outlet
Road is cooled down.
Preferably, the burner can be by controlling ignition temperature, the low nitrogen burning skill using gas-turbine combustion chamber
Art is (such as：Steam injection or water, dry type low nitrogen burning), reduce the generation of nitrogen oxides.
Preferably, the water that the separator drain port is collected can process after using or be discharged into environment.
Preferably, the gas that the gas separator floss hole is collected can process after using or be discharged into environment.
Preferably, the entrance of the pump or the settable CO2 emission mouthful of outlet, it is unnecessary for collect that burning produces
Carbon dioxide.
Preferably, the compressor can use cooling during rolling, to reduce acting loss.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the carbon dioxide in gaseous fuel, air and circulation loop is introduced into burner of the invention, it is not necessary to use
Air-separating plant produces oxidant of the pure oxygen as burning.
2nd, can both be controlled by combustion can also be after discharge gas for discharged nitrous oxides of the invention
It is controlled by treatment, or is directly discharged under conditions of permission.
Brief description of the drawings
The signal of the supercritical carbon dioxide power circulation system of a kind of direct combustion heating that Fig. 1 is provided for the present invention
Figure.
Specific embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment
As shown in figure 1, be the supercritical carbon dioxide power circulation system of a kind of direct combustion heating for providing of the invention,
It includes pump 1, the entrance of the outlet connection low-pressure side of regenerator 3 of pump 1, and it is cold that the outlet of the low-pressure side of regenerator 3 is sequentially connected first
But device 9, separator 10, compressor 12, the second cooler 13, gas separator 14, the bottom of separator 10 is provided with drain port
11, the top of gas separator 14 is provided with exhaust outlet 15, and bottom connects the entrance of pump 1；The high-pressure side of regenerator 3 passes sequentially through combustion
Burner 4, turbine 7 form loop, and burner 4 is provided with gas fuel inlet 5, air intake 6, and turbine 7 is connected with generator 8.
The exit of pump 1 is provided with CO2 emission mouthful 1, and porch is provided with CO2 emission mouthful 2 16.Lead between each equipment
Piping is connected, and needs are controlled according to system, and valve, instrument can be arranged on pipeline.The other parts of composition system also have auxiliary
Facility, electrical system, I＆C system etc..
A kind of method of the supercritical carbon dioxide power circulation system of direct combustion heating：
Carbon dioxide working medium is pressurized to 30MPa by pump 1, then from high pressure side-entrance feeding regenerator 3, carbon dioxide
Burner 4 is delivered to from high pressure side outlet after the blending agent heating that working medium is sent into regenerator 3 from low pressure side-entrance, is burnt
Fuel combustion produces heat and combustion product in device 4, and high temperature blending agent spontaneous combustion burner 4 exports, temperature can reach 1000 DEG C with
On, into the acting of turbine 7 and pushing generator 8, turbine 7 exports blending agent and enters regenerator 3 by low pressure side-entrance, after heat exchange
Blending agent enter the first cooler 9 by aqueous, after separator 10, water from drain port 11 discharge collect, gas
Medium is pressurized to 8MPa into compressor 12, and the blending agent of the outlet of compressor 12 makes carbon dioxide liquid through the second cooler 13
Change, in gas separator 14, gas is discharged or collected by floss hole 15, liquid CO 2 enters pump 1, unnecessary dioxy
Change carbon to be collected by the CO2 emission mouthful one 2, CO2 emission mouthful 2 16 of the gateway of pump 1.
The outlet temperature of burner 4 of supercritical carbon dioxide power cycle is subjected in design, NO_x formation, cost
In the range of it is high as much as possible, to reach efficiency higher, up to more than 1000 DEG C.The expansion ratio of turbine 7 can be according to optimization
Cycle efficieny meets the selection of other design requirements.The outlet pressure of compressor 12 sets according to the cooling capacity of the second cooler 13
It is fixed, it is ensured that the carbon dioxide transitions of the outlet of the second cooler 13 are liquid, and other media are still gas.
Claims (4)
1. a kind of supercritical carbon dioxide power circulation system of direct combustion heating, it is characterised in that including pump (1), pump (1)
Outlet connect the entrance of regenerator (3) low-pressure side, the outlet of regenerator (3) low-pressure side is sequentially connected the first cooler (9), water
Separator (10), compressor (12), the second cooler (13), gas separator (14), separator (10) bottom are provided with hydrophobic
Mouth (11), is provided with exhaust outlet (15), the entrance of bottom connection pump (1) at the top of gas separator (14)；The high pressure of regenerator (3)
Side passes sequentially through burner (4), turbine (7) and forms loop, and burner (4) is provided with gas fuel inlet (5), air intake
(6), turbine (7) is connected with generator (8).
2. the supercritical carbon dioxide power circulation system of directly combustion heating as claimed in claim 1, it is characterised in that institute
The exit for stating pump (1) is provided with CO2 emission mouthful (2) or/and porch is provided with CO2 emission mouthful two (16).
3. a kind of method of the supercritical carbon dioxide power cycle of direct combustion heating, it is characterised in that use claim 1
Or the supercritical carbon dioxide power circulation system of the direct combustion heating described in 2, concretely comprise the following steps：By pump (1) by titanium dioxide
Sent into regenerator (3) after carbon supercharging, the blending agent heating that carbon dioxide is sent into regenerator (3) from low pressure side-entrance
Burner (4) is delivered to from high pressure side outlet afterwards, fuel combustion produces heat and combustion product in burner (4), and high temperature mixing is situated between
Matter spontaneous combustion burner (4) outlet enters turbine (7) acting and pushing generator (8), and turbine (7) outlet blending agent is entered by low-pressure side
Mouthful enter regenerator (3), blending agent after heat exchange enters the first cooler (9) by aqueous, by separator (10) after,
Water is discharged from drain port (11) and collected, and gas medium is pressurized into compressor (12), the blending agent warp of compressor (12) outlet
Second cooler (13) makes co 2 liquefaction, and in gas separator (14), gas is discharged or collected by exhaust outlet (15),
Liquid CO 2 enters pump (1), and the optional carbon dioxide that unnecessary carbon dioxide can be set by pump (1) outlet or entrance is arranged
The CO2 emission of mouth one (2) or optional mouthful two (16) is put to collect.
4. the method for the directly supercritical carbon dioxide power cycle of combustion heating as claimed in claim 3, it is characterised in that
Carbon dioxide is pressurized to 25-35MPa by the pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710062574.5A CN106837443A (en) | 2017-01-25 | 2017-01-25 | The supercritical carbon dioxide power circulation system and method for a kind of direct combustion heating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710062574.5A CN106837443A (en) | 2017-01-25 | 2017-01-25 | The supercritical carbon dioxide power circulation system and method for a kind of direct combustion heating |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327325A (en) * | 2017-08-03 | 2017-11-07 | 上海发电设备成套设计研究院有限责任公司 | A kind of supercritical carbon dioxide and liquid metal combined cycle system |
| CN108361554A (en) * | 2018-04-02 | 2018-08-03 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of nitrogen supercharging device and its application method |
| CN109184915A (en) * | 2018-10-30 | 2019-01-11 | 中国华能集团清洁能源技术研究院有限公司 | A kind of supercritical carbon dioxide electricity generation system and method that carbon dioxide traps entirely |
| CN109356721A (en) * | 2018-11-12 | 2019-02-19 | 华北电力大学 | The supercritical carbon dioxide zero-emission electricity generation system of integrated solar coal gasification |
| CN109812304A (en) * | 2019-03-06 | 2019-05-28 | 上海发电设备成套设计研究院有限责任公司 | The peaking generation system and method for integrated carbon dioxide recycle and liquefied air energy storage |
| CN110469404A (en) * | 2019-08-06 | 2019-11-19 | 碧流天能(北京)科技股份有限公司 | Supercritical carbon dioxide working medium miniature gas turbine system and its working medium circulation method |
| CN111102073A (en) * | 2019-12-16 | 2020-05-05 | 西安交通大学 | Supercritical carbon dioxide circulating system suitable for coal gasification and operation method thereof |
| CN111927723A (en) * | 2020-06-30 | 2020-11-13 | 华电电力科学研究院有限公司 | Electric power peak regulation system based on microalgae respiration coupling solar energy and supercritical hydrothermal reaction |
| CN112539673A (en) * | 2020-12-02 | 2021-03-23 | 上海发电设备成套设计研究院有限责任公司 | Electric-thermal-electric energy storage system and method |
| CN113958410A (en) * | 2021-11-23 | 2022-01-21 | 烟台龙源电力技术股份有限公司 | Power generation system |
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| JPH03215139A (en) * | 1990-01-19 | 1991-09-20 | Toyo Eng Corp | Power generating method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327325A (en) * | 2017-08-03 | 2017-11-07 | 上海发电设备成套设计研究院有限责任公司 | A kind of supercritical carbon dioxide and liquid metal combined cycle system |
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| CN108361554A (en) * | 2018-04-02 | 2018-08-03 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of nitrogen supercharging device and its application method |
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| CN109184915A (en) * | 2018-10-30 | 2019-01-11 | 中国华能集团清洁能源技术研究院有限公司 | A kind of supercritical carbon dioxide electricity generation system and method that carbon dioxide traps entirely |
| CN109356721A (en) * | 2018-11-12 | 2019-02-19 | 华北电力大学 | The supercritical carbon dioxide zero-emission electricity generation system of integrated solar coal gasification |
| CN109812304B (en) * | 2019-03-06 | 2023-08-29 | 上海发电设备成套设计研究院有限责任公司 | Peak regulation power generation system and method integrating carbon dioxide circulation and liquefied air energy storage |
| CN109812304A (en) * | 2019-03-06 | 2019-05-28 | 上海发电设备成套设计研究院有限责任公司 | The peaking generation system and method for integrated carbon dioxide recycle and liquefied air energy storage |
| CN110469404A (en) * | 2019-08-06 | 2019-11-19 | 碧流天能(北京)科技股份有限公司 | Supercritical carbon dioxide working medium miniature gas turbine system and its working medium circulation method |
| CN111102073A (en) * | 2019-12-16 | 2020-05-05 | 西安交通大学 | Supercritical carbon dioxide circulating system suitable for coal gasification and operation method thereof |
| CN111102073B (en) * | 2019-12-16 | 2020-11-17 | 西安交通大学 | Supercritical carbon dioxide circulating system suitable for coal gasification and operation method thereof |
| CN111927723B (en) * | 2020-06-30 | 2022-08-23 | 华电电力科学研究院有限公司 | Electric power peak regulation system based on microalgae respiration coupling solar energy and supercritical hydrothermal reaction |
| CN111927723A (en) * | 2020-06-30 | 2020-11-13 | 华电电力科学研究院有限公司 | Electric power peak regulation system based on microalgae respiration coupling solar energy and supercritical hydrothermal reaction |
| CN112539673A (en) * | 2020-12-02 | 2021-03-23 | 上海发电设备成套设计研究院有限责任公司 | Electric-thermal-electric energy storage system and method |
| CN113958410A (en) * | 2021-11-23 | 2022-01-21 | 烟台龙源电力技术股份有限公司 | Power generation system |
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