CN209212322U - A kind of across fluidised form circulation system of CO 2 cross-critical - Google Patents
A kind of across fluidised form circulation system of CO 2 cross-critical Download PDFInfo
- Publication number
- CN209212322U CN209212322U CN201920556800.XU CN201920556800U CN209212322U CN 209212322 U CN209212322 U CN 209212322U CN 201920556800 U CN201920556800 U CN 201920556800U CN 209212322 U CN209212322 U CN 209212322U
- Authority
- CN
- China
- Prior art keywords
- cross
- fluidised form
- circulation system
- form circulation
- critical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 230000001172 regenerating effect Effects 0.000 claims abstract description 30
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 28
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000010587 phase diagram Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 239000003949 liquefied natural gas Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 229960004424 carbon dioxide Drugs 0.000 description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000011555 saturated liquid Substances 0.000 description 6
- 239000003345 natural gas Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000009841 combustion method Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- JISVROCKRBFEIQ-UHFFFAOYSA-N [O].O=[C] Chemical compound [O].O=[C] JISVROCKRBFEIQ-UHFFFAOYSA-N 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- MVWDJLOUEUAWIE-UHFFFAOYSA-N O=C=O.O=C=O Chemical compound O=C=O.O=C=O MVWDJLOUEUAWIE-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of across fluidised form circulation system of CO 2 cross-critical, the system include high temperature heat source, steam turbine, heat regenerative system, cooling system, compressor and cryogenic pump；The invention also discloses the working methods of the system.The utility model is a kind of completely new circulation system, and Systems Theory calculates cycle efficieny considerably beyond the existing circulation system under the conditions of, and realizes the carbon capture of zero cost, 100%；Compared with existing supercritical carbon dioxide power circulation system, only cryogenic pump to turbine inlet section is high-voltage operation, remaining equipment is low pressure operation, and high-tension apparatus quantity greatly reduces, and construction cost substantially reduces, and safety greatly improves；Liquefied natural gas, space environment can be used as low-temperature heat source in a cooling system, have excellent performance, have a high potential in the application of the fields such as space flight, navigation.
Description
Technical field
The utility model relates to Thermal power engneering fields, and in particular to a kind of across the fluidised form heating power of CO 2 cross-critical follows
Loop system.
Background technique
Supercritical carbon dioxide Brayton cycle is by its energy density is big, system structure is compact, cycle efficieny is higher
Feature is expected to replace Steam Power Circulation.But since working medium cannot be heated in supercritical carbon dioxide Brayton cycle
Very high temperature (is lower than 620 DEG C), and system effectiveness does not have apparent competitive advantage；Compressor power consumption accounting is too big, seriously affects and is
System efficiency；Power pressure is entirely located in critical pressure or more in cyclic process, proposes requirements at the higher level to the material of each component, needs
Equipment is redesigned, cost of investment is very big.
It is recycled about Allam, Allam circulation is actually the Brayton cycle of an oxygen-enriched combusting, and efficiency reaches
59%, but this is to obtain under conditions of initial temperature is 1500 DEG C, first pressing is 30MPa, and its cyclic process power pressure is complete
Portion is greater than critical pressure, and high-temperature resistance and bearing capacity to equipment propose very high request, and the difficulty of realization is very big, is not easy
In promotion and implementation.
Summary of the invention
In order to solve the above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of CO 2 cross
Working medium can be heated to 600~1500 DEG C by critical across fluidised form circulation system, high temperature heat source；It will be circulation with carbon dioxide
The outlet pressure of the steam turbine of working medium drops to critical pressure hereinafter, to improve the ratio enthalpy drop of steam turbine；Carbon dioxide is cooling
To be pressurizeed again with cryogenic pump after saturated liquid, the power consumption for compressing per unit mass carbon dioxide is greatly decreased, and when high warm
It, can be by circulation extra two when the combustion method that source is burnt in supercritical carbon dioxide atmosphere using natural gas and oxygen
Carbonoxide directly proposes to realize without condensing compression again 100% carbon capture of zero cost and seals up for safekeeping；Cooling system can be adopted
It uses space environment, liquefied natural gas as cold source, is effectively utilized natural cold-amount, and make this circulation can be in too aerial applications.
In order to achieve the above object, the utility model adopts the following technical solution:
A kind of across fluidised form circulation system of CO 2 cross-critical, the system include high temperature heat source A, steam turbine B, backheat
System C, cooling system D, compressor E and cryogenic pump F；
Specific connection relationship are as follows: the outlet high temperature heat source A connection steam turbine B entrance, the outlet steam turbine B connection heat regenerative system C
Cold side level-one entrance, the cold side level-one entrance of the primary outlet connection cooling system D of heat regenerative system C cold side, cooling system
System D cold side primary outlet connect compressor E entrance, the outlet compressor E connection heat regenerative system C cold side secondary inlet, backheat
System C cold side secondary exit port connects cooling system D cold side secondary inlet, and the connection of cooling system D cold side secondary exit port is low
Warm pump F entrance, the outlet cryogenic pump F connection heat regenerative system C heat absorption side entrance, heat regenerative system C heat absorption side outlet connect high temperature heat source A
Entrance forms across the fluidised form circulation system circuit of CO 2 cross-critical.
The steam turbine B outlet pressure is 0.005~0.5MPa.
The heat regenerative system C includes several heat exchangers.
The cooling system D includes several low temperature heat exchangers, and cold source is provided by the external world.
The cooling system D cold side first class outlet temperature is not less than steam turbine on gas-solid equilibrium line in carbon dioxide phase diagram
The corresponding temperature of B outlet pressure.
The compressor E outlet pressure is greater than 0.6MPa.
The cooling system D cold side secondary exit port temperature is equal to the full of the corresponding carbon dioxide of compressor E outlet pressure
And temperature.
The cryogenic pump F outlet pressure is 10~30MPa.
The working medium that across the fluidised form circulation system of CO 2 cross-critical uses is carbon dioxide.
A kind of above-mentioned working method of CO 2 cross-critical across fluidised form circulation system, carbon dioxide saturated liquid warp
Enter heat regenerative system C level pressure after cryogenic pump F pressurization to absorb heat, becomes supercritical carbon dioxide, supercritical carbon dioxide is in Gao Wenre
Level pressure is absorbed heat in the A of source, becomes carbon dioxide overheated gas, and the level pressure heat release in heat regenerative system after doing work into steam turbine B, into
Enter cooling system D level pressure heat release, and heat regenerative system C level pressure heat release is compressed and be again introduced into through compressor E, enters back into cooling system
After the heat release of D level pressure is until it becomes carbon dioxide saturated liquid, boosts into cryogenic pump F and complete circulation.
Compared to the prior art, the utility model has the advantage that
1. it is high temperature heat source A that the utility model, which can take various heating sources, especially faced using natural gas and oxygen super
Behind the combustion chamber burnt in boundary's carbon dioxide atmosphere, working medium can be heated to 1500 DEG C or more, and system effectiveness is substantially mentioned
It is high.The turbine inlet temperature and pressure of Allam circulation is respectively 1500 DEG C and 30MPa, system effectiveness 59.0%, through counting
It calculates, a kind of across the fluidised form circulation system of CO 2 cross-critical of the utility model, in steam turbine B inlet temperature and pressure point
Not Wei 1200 DEG C and 10MPa, steam turbine B outlet pressure be 0.01MPa, when compressor delivery pressure is 0.7MPa, system is practical
Cycle efficieny is 67.0%, and compared with Allam circulation, this system reduces by 20% He in the temperature and pressure of turbine inlet respectively
In the case where 50%, efficiency improves 8.0%.
2. the utility model improves steam turbine than enthalpy drop, system effectiveness not only is greatly improved, and recycles phase with Allam
Than under identical power conditions, single cycle net work increases by 50%~60%, and working medium mass flow reduces 33%~38%.
3. cooling system can be effectively utilized natural cold-amount using liquefied natural gas as cold source in the utility model；
Space environment temperature is extremely low, is a natural inexhaustible, nexhaustible big freezer, therefore one kind two of the utility model
Across the fluidised form circulation system of carbonoxide Trans-critical cycle has a high potential in space power field.
4. only cryogenic pump F to this section of region steam turbine B is high pressure, and other equipment do not need to bear in this circulation
High pressure, compared with existing supercritical carbon dioxide circulation system, high-tension apparatus quantity is greatly reduced, and construction cost is significantly
It reduces, the safety is improved.
5. the utility model will recompress after co 2 liquefaction, the work done during compression of system reduces 70~80%；When height warms
It, can be by circulation extra two when the combustion method that source is burnt in supercritical carbon dioxide atmosphere using natural gas and oxygen
Carbonoxide directly proposes to realize 100% carbon capture of zero cost without regathering condensation compression and seal up for safekeeping, be expected to from now on
Establish the novel green power station of high efficiency, zero-emission.
Detailed description of the invention
Fig. 1 is a kind of across the fluidised form circulation system schematic diagram of CO 2 cross-critical of the utility model.
Fig. 2 is a kind of tephigram of the CO 2 cross-critical of the utility model across fluidised form circulation system.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of across the fluidised form circulation system of CO 2 cross-critical of the utility model, including high temperature heat source
A, steam turbine B, heat regenerative system C, cooling system D, compressor E and cryogenic pump F；
Specific connection relationship are as follows: the outlet high temperature heat source A connection steam turbine B entrance, the outlet steam turbine B connection heat regenerative system C
Cold side level-one entrance, the cold side level-one entrance of the primary outlet connection cooling system D of heat regenerative system C cold side, cooling system
System D cold side primary outlet connect compressor E entrance, the outlet compressor E connection heat regenerative system C cold side secondary inlet, backheat
System C cold side secondary exit port connects cooling system D cold side secondary inlet, and the connection of cooling system D cold side secondary exit port is low
Warm pump F entrance, the outlet cryogenic pump F connection heat regenerative system C heat absorption side entrance, heat regenerative system C heat absorption side outlet connect high temperature heat source A
Entrance forms across the fluidised form circulation system circuit of CO 2 cross-critical.
As preferred embodiments of the present invention, the high temperature heat source A can be faced using natural gas and oxygen super
The combustion method to burn in boundary's carbon dioxide atmosphere can also cooperate with other heat source systems such as nuclear reactor, solar energy optical-thermals
Operation.
As preferred embodiments of the present invention, the steam turbine B outlet pressure is 0.005~0.5MPa.
As preferred embodiments of the present invention, the heat regenerative system C includes several heat exchangers.
As preferred embodiments of the present invention, the cooling system D includes several low temperature heat exchangers, cold source by
The external world provides, such as liquefied natural gas, space environment.
As preferred embodiments of the present invention, the cooling system D cold side first class outlet temperature is not less than two
The corresponding temperature of steam turbine B outlet pressure on gas-solid equilibrium line in oxidation carbon phase diagram.
As preferred embodiments of the present invention, the compressor E can take the multi-stage compression with cascade EDFA
Mode.
As preferred embodiments of the present invention, the compressor E outlet pressure is greater than 0.6MPa.
As preferred embodiments of the present invention, the cooling system D cold side secondary exit port temperature is equal to compression
The saturation temperature of the corresponding carbon dioxide of machine outlet pressure.
As preferred embodiments of the present invention, the cryogenic pump F outlet pressure is 10~30MPa.
As preferred embodiments of the present invention, across the fluidised form circulation system of CO 2 cross-critical is used
Working medium be carbon dioxide.
As shown in Figure 1, a kind of working method of the CO 2 cross-critical of the utility model across fluidised form circulation system, two
Carbonoxide saturated liquid rises to 10~30MPa in cryogenic pump F pressure, becomes carbon dioxide subcooled liquid, enters backheat system afterwards
C level pressure of uniting heat absorption becomes supercritical carbon dioxide, and supercritical carbon dioxide cycle fluid level pressure in high temperature heat source A is absorbed heat, temperature
Degree rises to 600~1500 DEG C, and into steam turbine B, temperature and pressure is constantly reduced and done work, and is become from supercritical carbon dioxide
Carbon dioxide overheated gas, final pressure are down to 0.005~0.01MPa, and the level pressure heat release in heat regenerative system, into cooling system
System D level pressure heat release, and heat regenerative system C level pressure heat release is compressed and is again introduced into through compressor E, it enters back into cooling system D level pressure and puts
After heat is until it becomes carbon dioxide saturated liquid, boosts into cryogenic pump F and complete circulation.
As shown in Fig. 2, a kind of above-mentioned tephigram of CO 2 cross-critical across fluidised form circulation system, during 1-2
Working medium enters steam turbine B acting, and the level pressure heat release in heat regenerative system C of 2-3 process working medium, 3-4 process working medium is in cooling system D
Level pressure heat release, 4-5 process working medium are boosted in compressor E, the level pressure heat release in heat regenerative system C of 5-6 process working medium, 6-7 process
Level pressure heat release is in cooling system D until it becomes saturated liquid for working medium, 7-8 process working medium approximate isentropic Compression in cryogenic pump F,
8-9 process working medium level pressure in heat regenerative system C is absorbed heat, and 9-1 process working medium level pressure in high temperature heat source A is absorbed heat.
Claims (9)
1. a kind of across fluidised form circulation system of CO 2 cross-critical, which is characterized in that including high temperature heat source (A), steam turbine
(B), heat regenerative system (C), cooling system (D), compressor (E) and cryogenic pump (F)；
Specific connection relationship are as follows: high temperature heat source (A) outlet connection steam turbine (B) entrance, steam turbine (B) outlet connection heat regenerative system
(C) cold side level-one entrance, the cold side level-one entrance of primary outlet connection cooling system (D) of heat regenerative system (C) cold side,
Cooling system (D) cold side primary outlet connect compressor (E) entrance, compressor (E) outlet connection heat regenerative system (C) cold side
Secondary inlet, heat regenerative system (C) cold side secondary exit port connect cooling system (D) cold side secondary inlet, and cooling system (D) is put
Hot side secondary exit port connects cryogenic pump (F) entrance, cryogenic pump (F) outlet connection heat regenerative system (C) heat absorption side entrance, heat regenerative system
(C) heat absorption side outlet connection high temperature heat source (A) entrance forms across the fluidised form circulation system circuit of CO 2 cross-critical.
2. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
Steam turbine (B) outlet pressure is 0.005~0.5MPa.
3. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
Heat regenerative system (C) includes several heat exchangers.
4. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
Cooling system (D) includes several low temperature heat exchangers, and cold source is provided by the external world.
5. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
Cooling system (D) cold side first class outlet temperature is not less than steam turbine (B) outlet pressure on gas-solid equilibrium line in carbon dioxide phase diagram
The corresponding temperature of power.
6. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
Compressor (E) outlet pressure is greater than 0.6MPa.
7. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
Cooling system (D) cold side secondary exit port temperature is equal to the saturation temperature of the corresponding carbon dioxide of compressor (E) outlet pressure.
8. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
Cryogenic pump (F) outlet pressure is 10~30MPa.
9. across the fluidised form circulation system of a kind of CO 2 cross-critical according to claim 1, it is characterised in that: described
The working medium that across the fluidised form circulation system of CO 2 cross-critical uses is carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920556800.XU CN209212322U (en) | 2019-04-22 | 2019-04-22 | A kind of across fluidised form circulation system of CO 2 cross-critical |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920556800.XU CN209212322U (en) | 2019-04-22 | 2019-04-22 | A kind of across fluidised form circulation system of CO 2 cross-critical |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209212322U true CN209212322U (en) | 2019-08-06 |
Family
ID=67468106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920556800.XU Withdrawn - After Issue CN209212322U (en) | 2019-04-22 | 2019-04-22 | A kind of across fluidised form circulation system of CO 2 cross-critical |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209212322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043337A (en) * | 2019-04-22 | 2019-07-23 | 西安交通大学 | A kind of across the fluidised form circulation system of CO 2 cross-critical and working method |
-
2019
- 2019-04-22 CN CN201920556800.XU patent/CN209212322U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043337A (en) * | 2019-04-22 | 2019-07-23 | 西安交通大学 | A kind of across the fluidised form circulation system of CO 2 cross-critical and working method |
| CN110043337B (en) * | 2019-04-22 | 2023-11-28 | 西安交通大学 | Carbon dioxide transcritical flow state thermodynamic cycle system and working method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105673107B (en) | The supercritical carbon dioxide electricity generation system and method for the heat collection combined driving of groove tower | |
| CN103629860B (en) | Trans-critical cycle CO 2cool and thermal power combined cycle system | |
| CN107630726A (en) | A kind of multipotency hybrid power system and method based on supercritical carbon dioxide circulation | |
| CN106098122A (en) | A kind of nuclear power generating system based on supercritical carbon dioxide Brayton cycle | |
| CN109826685B (en) | Supercritical carbon dioxide circulating coal-fired power generation system and method | |
| CN107401431B (en) | Supercritical carbon dioxide generalized carnot circulation system | |
| CN111128415A (en) | Heat pipe reactor adopting closed gas Brayton cycle and operation method thereof | |
| CN111121389A (en) | Liquefied air energy storage and power generation system of deep coupling coal-fired unit | |
| WO2023193486A1 (en) | Normal-temperature liquid compressed carbon dioxide mixed working fluid energy storage system and method | |
| CN110230518A (en) | A kind of coal base supercritical CO2Brayton cycle electricity generation system and method | |
| CN107355269A (en) | A kind of supercritical carbon dioxide and helium combined cycle system | |
| CN111120100A (en) | Heat pipe reactor adopting open type gas Brayton cycle and operation method thereof | |
| CN105401988B (en) | Utilize the efficient circulation system of vortex tube | |
| CN107387181A (en) | The Rankine Stirling combined cycle system utilized applied to mine car waste heat from tail gas | |
| CN113153462A (en) | Waste heat auxiliary heating condensed water system and method for supercritical carbon dioxide circulation cold end | |
| US11002468B2 (en) | Method and system for circulating combined cooling, heating and power with jet cooling device | |
| CN206539381U (en) | A kind of supercritical carbon dioxide cycle generating system based on combustion gas and solar heat | |
| CN209212322U (en) | A kind of across fluidised form circulation system of CO 2 cross-critical | |
| CN209053696U (en) | A kind of coal gasification supercritical carbon dioxide electricity generation system of waste heat recycling | |
| CN214741510U (en) | Waste heat auxiliary heating condensate system for supercritical carbon dioxide circulation cold end | |
| CN208073574U (en) | A kind of three regenerator supercritical carbon dioxide cycle generating system of three turbine | |
| CN114198173A (en) | Full-backheating Brayton cycle and absorption refrigeration integrated electricity-cold combined supply system | |
| CN206816364U (en) | A kind of gas turbine critical-cross carbon dioxide condensation cycle combined generating system | |
| CN109944649B (en) | Self-deep cooling power circulation method and system | |
| CN108643982A (en) | A kind of overcritical Brayton cycle electricity generation system and method that band refrigeration is cooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190806 Effective date of abandoning: 20231128 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190806 Effective date of abandoning: 20231128 |