CN113871653A - Zero-carbon-emission fossil fuel power generation method and device system - Google Patents
Zero-carbon-emission fossil fuel power generation method and device system Download PDFInfo
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- CN113871653A CN113871653A CN202111381338.2A CN202111381338A CN113871653A CN 113871653 A CN113871653 A CN 113871653A CN 202111381338 A CN202111381338 A CN 202111381338A CN 113871653 A CN113871653 A CN 113871653A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04044—Purification of heat exchange media
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
- H01M8/0668—Removal of carbon monoxide or carbon dioxide
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
Abstract
The invention relates to a zero-carbon-emission fossil fuel power generation method and a device system, which comprises the steps of selecting a carbon dioxide sequestration layer for geological exploration, constructing a fossil fuel power plant on a site above the selected carbon dioxide sequestration layer, performing oxygen-enriched combustion power generation by blowing oxygen into fossil fuel in the power plant, externally transmitting the generated electric energy, and injecting the generated carbon dioxide-enriched flue gas into the carbon dioxide sequestration layer on site; the invention enables the horizontal distance between the production site of the carbon dioxide-rich flue gas and the injection site of the carbon dioxide sealing layer to be close, and directly injects the carbon-rich flue gas containing 50-95% of carbon dioxide into the carbon sealing layer, thereby omitting the long-distance transportation link between the carbon capture link and the carbon sealing link, greatly reducing the carbon capture cost and the CCS cost of the whole process, and economically and feasibly realizing the zero-carbon-emission fossil fuel power generation.
Description
Technical Field
The invention discloses a zero-Carbon-emission fossil fuel power generation method and a device system, and belongs to the technical field of Carbon Capture and Storage (CCS) and clean energy, which can cope with climate change.
Background
To cope with climate change, to achieve climate goals, there is a need for large scale applications of Carbon Capture and Sequestration (CCS), and in particular for the realization of large commercial scale CCS projects in the energy field. The existing multiple CCS technical routes, as shown in fig. 3 and 4, include three links of carbon capture, transportation and sequestration; the carbon capture link is to separate carbon dioxide in flue gas generated by industrial facilities such as fossil fuel combustion and the like, and the flue gas is required to be purified into liquid with the general concentration of 99%, dense-phase gas or solid carbon dioxide, and the carbon capture generally adopts unit technologies such as chemical adsorption, membrane separation, oxygen-enriched combustion and purification; the transportation link is also a necessary link of the existing CCS technology, because the geographical position of an industrial facility for implementing carbon capture is determined in advance by the existing industrial layout, then natural sequestration resources are searched, the distance between the carbon capture point and the sequestration point is often far away, the unit technical content of the transportation link is the construction and operation technology of high-concentration carbon dioxide transportation pipe networks such as liquid or dense-phase gas, the design of transporting high-concentration carbon dioxide for 700-800 kilometers has been provided earlier, the transportation distance requirement is shortened in recent years, and the closer report is that the transportation distance of the high-concentration carbon dioxide, namely the horizontal length of a high-concentration carbon dioxide pipeline, is not more than 200 kilometers; the unit technology of the sealing link mainly comprises a geological sealing resource exploration technology and a safety evaluation technology.
However, the current commercial scale CCS project is almost zero. It is generally believed that: the time left for coping with climate change is not much, and the situation that the existing CCS technical route is too high in cost and too slow in development needs to be changed urgently.
Disclosure of Invention
The invention provides an economical and feasible method and device system for generating fossil fuel with zero carbon emission, which can greatly reduce the cost of a full-flow CCS technical scheme and overcome the outstanding defect of poor cost benefit of the current CCS technical route. The fossil fuel comprises one or a combination of coal, petroleum, natural gas, coal bed gas and combustible ice; the zero carbon emission means that most of carbon dioxide generated in the power generation process of fossil fuel realizes CCS.
The technical scheme of the zero-carbon-emission fossil fuel power generation method is as follows:
a method of zero carbon emissions fossil fuel power generation, the steps comprising: selecting a carbon dioxide sealing layer for geological exploration, arranging a fossil fuel power plant above the selected carbon dioxide sealing layer in a field, performing oxygen-enriched combustion power generation of oxygen gas on fossil fuel in the power plant to generate electric energy and carbon dioxide-rich flue gas, externally conveying the generated electric energy, and injecting the generated carbon dioxide-rich flue gas into the carbon dioxide sealing layer on site; the method for injecting the carbon dioxide sequestration layer in situ is a method for enabling the generating place of the flue gas rich in carbon dioxide to be close to the carbon dioxide injecting place of the carbon dioxide sequestration layer and the horizontal distance between the two places.
The further technical scheme is as follows:
the carbon dioxide-rich flue gas is injected into the carbon dioxide sealing layer in situ, the mass ratio of the carbon dioxide to the total mass of the flue gas is more than 50%, and less than 95% of the carbon dioxide-rich flue gas is injected into the carbon dioxide sealing layer in situ.
The carbon dioxide-rich flue gas is injected into the carbon dioxide sealing layer in situ, wherein the mass ratio of the carbon dioxide to the total mass of the flue gas is more than 60 percent and less than 85 percent of the carbon dioxide-rich flue gas is injected into the carbon dioxide sealing layer in situ.
The method for enabling the generation site of the flue gas rich in carbon dioxide to be close to the carbon dioxide injection site of the carbon dioxide sequestration layer in the horizontal distance between the two sites is a method for enabling the horizontal distance between the two sites to be less than 100 km.
The method for enabling the generation site of the flue gas rich in carbon dioxide to be close to the carbon dioxide injection site of the carbon dioxide sequestration layer in the horizontal distance between the two sites is a method for enabling the horizontal distance between the two sites to be less than 50 km.
The method for enabling the generation site of the flue gas rich in carbon dioxide to be close to the carbon dioxide injection site of the carbon dioxide sequestration layer in the horizontal distance between the two sites is a method for enabling the horizontal distance between the two sites to be less than 20 km.
The method for enabling the generating place of the flue gas rich in carbon dioxide to be close to the carbon dioxide injecting place of the carbon dioxide sealing layer and enabling the horizontal distance between the two places to be less than 2km is a method for enabling the horizontal distance between the two places to be close to each other.
The method for injecting the generated flue gas rich in the carbon dioxide into the carbon dioxide sequestration layer in situ is a method for injecting the generated flue gas rich in the carbon dioxide into a saline water layer under the ground or the seabed in situ to realize carbon dioxide sequestration.
The method for injecting the generated flue gas rich in carbon dioxide into the carbon dioxide sequestration layer in situ is a method for injecting the generated flue gas rich in carbon dioxide into an oil and gas field under the ground or the seabed in situ to realize carbon dioxide sequestration and improve the oil and gas recovery rate.
The place above the carbon dioxide sealing layer is the ground or the sea surface.
The method for injecting the flue gas rich in the carbon dioxide into the carbon dioxide sequestration layer in situ is a method for injecting the flue gas rich in the carbon dioxide into the carbon dioxide sequestration layer through corrosion-resistant facilities and pipelines, and/or a method for injecting the flue gas rich in the carbon dioxide sequestration layer after seawater washing is carried out to remove corrosive sulfur oxides.
The electric energy is transmitted outwards by a power cable to a shore power grid and/or a marine new energy power grid and/or an oil and gas processing plant near a marine oil and gas exploitation facility; the ocean new energy power grid comprises a power grid connected with ocean wind power, photoelectric or tidal power generation facilities.
The technical scheme of the zero-carbon-emission fossil fuel power generation device system used for the method is as follows:
it includes the oxygen boosting burning power unit who produces carbon-rich flue gas, and carbon dioxide seals up the layer of depositing, and this oxygen boosting burning power unit links there are: the system comprises a fossil fuel input unit, a power generation and transformation unit, a power cooling unit, an oxygen generation unit and a carbon-rich flue gas purification and pressurization gas storage unit; the outlet of the gas storage unit of the carbon-rich flue gas purification and pressurization gas storage unit is communicated with the inlet of a conveying pipe of a carbon-rich flue gas conveying pipe which has a nearly zero horizontal length and flows through flue gas containing 50% -95% of carbon dioxide, the outlet of the conveying pipe of the carbon-rich flue gas conveying pipe is communicated with a carbon dioxide sealing layer, and the nearly zero horizontal length is the nearly zero horizontal size from the center line of the oxygen-rich combustion power unit to the center of the outlet of the conveying pipe of the carbon-rich flue gas conveying pipe.
The horizontal length is near zero, which is the maximum horizontal size from the center line of the oxygen-enriched combustion power unit to the centers of the outlets of the conveying pipes of the carbon-enriched flue gas conveying pipe.
The further technical scheme is as follows:
the carbon-rich flue gas conveying pipe with the horizontal length close to zero is a carbon-rich flue gas conveying pipe with the horizontal size from the center line of the oxygen-rich combustion power unit to the center of the outlet of the conveying pipe of the carbon-rich flue gas conveying pipe smaller than 100 km.
The carbon-rich flue gas conveying pipe with the horizontal length close to zero is a carbon-rich flue gas conveying pipe with the horizontal size from the center line of the oxygen-rich combustion power unit to the center of the outlet of the conveying pipe of the carbon-rich flue gas conveying pipe being less than 50 km.
The carbon-rich flue gas conveying pipe with the horizontal length close to zero is a carbon-rich flue gas conveying pipe with the horizontal size from the center line of the oxygen-rich combustion power unit to the center of the outlet of the conveying pipe of the carbon-rich flue gas conveying pipe being less than 20 km.
The carbon-rich flue gas conveying pipe with the horizontal length close to zero is a carbon-rich flue gas conveying pipe with the horizontal size from the center line of the oxygen-rich combustion power unit to the center of the outlet of the conveying pipe of the carbon-rich flue gas conveying pipe smaller than 2 km.
The power cooling unit comprises a cooling water pump and/or a cooling fan.
Technical principle and technical effect of the invention
The scheme of the invention mainly adopts the technical principle of 'economic concentration': the scheme of the invention realizes zero-carbon-emission fossil fuel power generation in an economical and feasible manner, and the economical and feasible reason is that the method that the generation place of the flue gas rich in carbon dioxide is close to zero compared with the injection place of the carbon dioxide-sealed place and the horizontal distance between the two places is close to zero compared with the prior art is realized by adopting the steps of firstly selecting the carbon dioxide sealed layer by geological exploration and then building the fossil fuel power plant on the place above the selected carbon dioxide sealed layer; the method has the advantages that a long-distance transportation link between a carbon capture link and a carbon sealing link in the prior art is omitted, the transportation link is omitted, the transportation cost can be omitted, more importantly, carbon-rich flue gas containing 50% -95% of carbon dioxide can be directly injected into a carbon dioxide sealing layer without being limited by the commercial technical requirements of the transportation link, and 99% of high-purity carbon dioxide finished products are required to be provided in the carbon dioxide capture link. Because the purity of the finished product is closer to 100%, the cost curve rises faster and has an exponential relationship, the high-concentration carbon dioxide trapping cost is high, the trapping cost of the 'economic concentration' route adopted by the invention is greatly reduced, and the cost of the carbon trapping link accounts for half of the cost of the CCS whole flow, so the 'economic concentration' principle of the technical scheme of the invention produces the technical effect of realizing zero-carbon-emission fossil fuel power generation in an economically feasible mode.
Drawings
Fig. 1 is a schematic flow chart of an embodiment of the zero-carbon-emission fossil-fuel power generation method of the present invention, which includes the following steps: and (3) selecting a carbon dioxide sealing layer for geological exploration, arranging a fossil fuel oxygen-enriched combustion power plant above the selected carbon dioxide sealing layer, and injecting the generated carbon dioxide-enriched flue gas into the carbon dioxide sealing layer on site.
Fig. 2 is a schematic diagram of an embodiment of a zero carbon emissions fossil fuel power plant system of the present invention. The carbon-rich flue gas purification and pressurization gas storage unit is communicated with a conveying pipe inlet of a carbon-rich flue gas conveying pipe which is communicated with flue gas containing 50% -95% of carbon dioxide and has a horizontal length close to zero, and a conveying pipe outlet of the carbon-rich flue gas conveying pipe is communicated with a carbon dioxide sealing layer.
FIG. 3 shows a CCS solution for oxygen-enriched combustion power generation, in which the purity of the finished carbon capture carbon dioxide liquid product is 99%, and the transport distance is about 300 km.
Fig. 4 shows a conventional coal-fired power generation CCS technical scheme, wherein carbon capture adopts common amine chemical adsorption, the purity of the finished carbon dioxide liquid product is 99%, and the transport distance is about 700 km.
In the drawings: the system comprises 1-oxygen-enriched combustion power unit, 2-fossil fuel input unit, 3-power generation and transformation unit, 4-power cooling unit, 5-oxygen generation unit, 6-carbon-enriched flue gas purification and pressurization gas storage unit, 6.1-gas storage unit outlet, 7-carbon-enriched flue gas conveying pipe, 7.1-conveying pipe inlet, 7.2-conveying pipe outlet, 7.3-horizontal length and 8-carbon dioxide sealing layer.
Detailed Description
The method and the device system for generating the zero-carbon-emission fossil fuel are further described by combining the accompanying drawings and the embodiment as follows:
example 1: is a basic embodiment of the zero carbon emission fossil fuel power generation method of the present invention. As shown in fig. 1, the steps of the zero-carbon-emission fossil fuel power generation method include: selecting a carbon dioxide sealing layer for geological exploration, arranging a fossil fuel power plant above the selected carbon dioxide sealing layer in a field, performing oxygen-enriched combustion power generation of oxygen gas on fossil fuel in the power plant to generate electric energy and carbon dioxide-rich flue gas, externally conveying the generated electric energy, and injecting the generated carbon dioxide-rich flue gas into the carbon dioxide sealing layer on site; the method for injecting the carbon dioxide sequestration layer in situ is a method for enabling the generation site of the flue gas rich in carbon dioxide to be close to the carbon dioxide injection site of the carbon dioxide sequestration layer in horizontal distance.
The selected carbon dioxide sequestration layer for geological exploration is selected according to the prior art and the specification. The fossil fuel oxygen-enriched combustion power generation is also the prior art.
Example 2: in a further embodiment based on embodiment 1, the flue gas rich in carbon dioxide is injected into the carbon dioxide sequestration layer in situ, wherein the ratio of the mass of carbon dioxide to the total mass of the flue gas is about 50%.
Another embodiment is that the carbon dioxide rich flue gas is injected in situ into the carbon dioxide sequestration layer such that about 60% of the mass of carbon dioxide to the total mass of the flue gas is injected in situ into the carbon dioxide sequestration layer.
Yet another embodiment is that the carbon dioxide rich flue gas is injected in situ into the carbon dioxide sequestration layer such that about 85% of the mass of carbon dioxide to the total mass of the flue gas is injected in situ into the carbon dioxide sequestration layer.
In yet another embodiment, the carbon dioxide rich flue gas is injected into the carbon dioxide sequestration layer in situ, wherein about 95% of the mass of carbon dioxide to the total mass of the flue gas is injected into the carbon dioxide sequestration layer in situ.
Example 3: in another embodiment based on embodiment 1, the method for bringing the site of generation of the flue gas rich in carbon dioxide close to the site of injection of carbon dioxide into the carbon dioxide sequestration layer by a horizontal distance of about 100 km.
Another embodiment is to have the site where the carbon dioxide rich flue gas is produced, and the carbon dioxide injection site where the carbon dioxide sequestration layer is injected, be horizontally spaced about 50km from each other.
Yet another embodiment is to have the site where the carbon dioxide rich flue gas is produced, and the carbon dioxide injection site where the carbon dioxide sequestration layer is injected, be horizontally spaced about 20km from each other. Yet another embodiment is to have the site where the carbon dioxide rich flue gas is produced, and the injection site where the carbon dioxide sequestration layer is injected, be horizontally spaced about 2km from each other.
The horizontal distance between the generation place (source) of the carbon dioxide-rich flue gas and the carbon dioxide injection place (sink) of the carbon dioxide injection sealing layer in the embodiments is significantly smaller than the distance between the source and the sink in the conventional CCS technical scheme, which is usually more than 200 kilometers, and the carbon-rich flue gas generated by power generation can be directly pressurized and injected into the carbon sealing layer, so that the high-concentration carbon dioxide transportation link required by the conventional CCS technology is omitted.
Example 4: is a further example on the basis of example 1. The method for injecting the generated flue gas rich in the carbon dioxide into the carbon dioxide sequestration layer in situ is a method for injecting the generated flue gas rich in the carbon dioxide into the saline water layer in situ to realize carbon dioxide sequestration.
Another embodiment is a method for injecting the generated flue gas rich in carbon dioxide into the carbon dioxide sequestration layer in situ, which is a method for injecting the generated flue gas rich in carbon dioxide into the saline aquifer in situ to realize carbon dioxide sequestration; the power plant arrangement of the present embodiment is arranged on an ocean engineering platform above sea level above the salt water layer.
Example 5: is a further example on the basis of example 1. The method for injecting the generated flue gas rich in carbon dioxide into the carbon dioxide sequestration layer in situ is a method for injecting the generated flue gas rich in carbon dioxide into an underground oil and gas field in situ to realize carbon dioxide sequestration and improve the oil and gas recovery ratio.
Another embodiment is a method for injecting the generated flue gas rich in carbon dioxide into a carbon dioxide sequestration layer in situ, which is a method for injecting the generated flue gas rich in carbon dioxide into an oil and gas field under the seabed in situ to realize carbon dioxide sequestration and improve the oil and gas recovery rate; the carbon dioxide sequestration layer of this embodiment is the oil and gas field under the seabed, and the place above the carbon dioxide sequestration layer is the sea, and the device that produces carbon-rich flue gas arranges the ocean engineering platform on the sea.
Example 6: is a further example on the basis of example 1. The method for injecting the carbon dioxide-rich flue gas into the carbon dioxide sequestration layer in situ is a method for injecting the carbon dioxide-rich flue gas into the carbon dioxide sequestration layer through corrosion-resistant facilities and pipelines. The reason is that the fossil fuel flue gas contains corrosive gases such as carbon dioxide, sulfur dioxide and the like, and a pipeline facility for pressurizing the injected flue gas needs to adopt qualified corrosion-resistant process materials with guaranteed reliability and safety. Another embodiment is to inject the flue gas rich in carbon dioxide into the carbon dioxide sequestration layer after seawater scrubbing to remove corrosive sulfur oxides.
Example 7: is a further example on the basis of example 1. The generated electric energy is externally transmitted, namely, the power station outputs electric power to an external power grid, and the electric power comprises electric power output to a national power grid, an international power grid and an intercontinental power grid through power cables and/or electric power output to factories nearby the power station.
It is also an embodiment that only power is supplied to nearby plants. Therefore, carbon dioxide generated by a factory can be merged with carbon-containing flue gas generated by combustion power generation and then injected into the carbon sealing layer on site.
Example 8: is a basic embodiment of a zero carbon emissions fossil fuel power plant system for use in the method of the present invention. As shown in fig. 2, the zero-carbon-emission fossil fuel power plant system includes an oxycombustion power unit 1 for generating carbon-rich flue gas, and a carbon dioxide sequestration layer 8, wherein the oxycombustion power unit 1 is connected with: the system comprises a fossil fuel input unit 2, a power generation and transformation unit 3, a power cooling unit 4, an oxygen generation unit 5 and a carbon-rich flue gas purification and pressurization gas storage unit 6; an outlet 6.1 of the gas storage unit of the carbon-rich flue gas purification and pressurization gas storage unit 6 is communicated with a conveying pipe inlet 7.1 of a carbon-rich flue gas conveying pipe 7 which has a horizontal length of 7.3 nearly zero and is used for circulating flue gas containing 50% -95% of carbon dioxide, an outlet 7.2 of the conveying pipe of the carbon-rich flue gas conveying pipe 7 is communicated with a carbon dioxide sealing layer 8, and the horizontal length of 7.3 nearly zero is the horizontal size from the center line of the oxygen-enriched combustion power unit 1 to the center of the outlet 7.2 of the conveying pipe of the carbon-rich flue gas conveying pipe 7 nearly zero.
The embodiment adopts oxygen-enriched combustion, so that the total heat energy efficiency of the power generation of the small and medium-sized units can be equivalent to that of the common large-sized units. On the other hand, the configuration increases transportation facilities for transporting fuel, but generally speaking, the transportation of fossil fuel such as coal, oil, natural gas and the like is more mature, safer and lower in cost compared with the transportation of high-pressure supercritical carbon dioxide, and particularly, the advantage of low-cost carbon capture for obtaining carbon-rich flue gas by oxygen-enriched combustion is maintained.
In yet another embodiment, the horizontal length is near zero, which is the maximum horizontal dimension from the center line of the oxycombustion power unit to the center of the outlet of the plurality of carbon-rich flue gas transport pipes.
Example 9: in a further embodiment based on embodiment 8, the carbon-rich flue gas conveying pipe 7 with the horizontal length of 7.3 close to zero is the carbon-rich flue gas conveying pipe 7 with the horizontal dimension of about 100km from the center line of the oxycombustion power unit 1 to the center of the conveying pipe outlet 7.2 of the carbon-rich flue gas conveying pipe 7. The vertical length of the carbon-rich flue gas duct 7 is designed to be about 3000m depending on the geological formation.
Another embodiment is the carbon-rich flue gas conveying pipe 7 with the horizontal length of 7.3 close to zero, and the carbon-rich flue gas conveying pipe 7 with the horizontal dimension of about 50km is from the center line of the oxygen-enriched combustion power unit 1 to the center of the conveying pipe outlet 7.2 of the carbon-rich flue gas conveying pipe 7.
Yet another embodiment is the carbon-rich flue gas conveying pipe 7 with the horizontal length of 7.3 close to zero, and the carbon-rich flue gas conveying pipe 7 with the horizontal dimension of about 20km from the center line of the oxygen-enriched combustion power unit 1 to the center of the conveying pipe outlet 7.2 of the carbon-rich flue gas conveying pipe 7.
In still another embodiment, the carbon-rich flue gas conveying pipe 7 with the horizontal length of 7.3 being close to zero is the carbon-rich flue gas conveying pipe 7 with the horizontal dimension of about 2km from the center line of the oxygen-enriched combustion power unit 1 to the center of the conveying pipe outlet 7.2 of the carbon-rich flue gas conveying pipe 7.
In another embodiment, the carbon-rich flue gas conveying pipe 7 with the horizontal length of 7.3 being close to zero is the carbon-rich flue gas conveying pipe 7 with the horizontal dimension of about 0 from the center line of the oxygen-enriched combustion power unit 1 to the center of the conveying pipe outlet 7.2 of the carbon-rich flue gas conveying pipe 7, and the oxygen-enriched combustion power unit 1 is installed on an ocean platform above an ocean oil and gas field and is positioned right above the conveying pipe outlet 7.2 of the carbon-rich flue gas conveying pipe 7.
Example 10: in a further embodiment based on embodiment 8, the power cooling unit 4 of the zero-carbon-emission fossil-fuel power plant system includes a cooling water pump. The powered cooling unit 4 of another embodiment includes a cooling fan. The cooling unit 4 of still another embodiment employs a cooling device of the circulating cooling water plus air type.
The scope of protection of the claims of the invention is not limited to the embodiments described above.
Claims (10)
1. A method of zero carbon emissions fossil fuel power generation, comprising the steps of: selecting a carbon dioxide sealing layer for geological exploration, arranging a fossil fuel power plant above the selected carbon dioxide sealing layer in a field, performing oxygen-enriched combustion power generation of oxygen gas on fossil fuel in the power plant to generate electric energy and carbon dioxide-rich flue gas, externally conveying the generated electric energy, and injecting the generated carbon dioxide-rich flue gas into the carbon dioxide sealing layer on site; the carbon dioxide sequestration layer is a saline water layer under the ground or the seabed.
2. The method of generating zero carbon emissions fossil fuel power as claimed in claim 1, wherein the generated carbon dioxide rich flue gas is injected in situ into the carbon dioxide sequestration layer such that the ratio of the mass of carbon dioxide to the total mass of the flue gas is greater than 50% and less than 95% of the carbon dioxide rich flue gas is injected in situ into the carbon dioxide sequestration layer.
3. The method for generating zero carbon emissions fossil fuel power of claim 1, wherein the in situ injection of the carbon dioxide sequestration layer is performed by a method that provides a site of generation of the carbon dioxide rich flue gas that is horizontally spaced from a site of carbon dioxide injection into the carbon dioxide sequestration layer.
4. The method for generating electricity from a zero carbon emission fossil fuel as claimed in claim 3, wherein the horizontal distance between the site of generation of the flue gas rich in carbon dioxide and the site of injection of carbon dioxide into the carbon dioxide sequestration layer is such that the horizontal distance between the two sites is less than 100km, or less than 50km, or less than 20 km.
5. The method for generating electricity from zero carbon emissions fossil fuels according to claim 1, wherein the location of generation of the flue gas rich in carbon dioxide is horizontally closer to the location of injection of carbon dioxide into the carbon dioxide sequestration layer by a distance of less than 10km or less than 5 km.
6. The method for generating electricity from zero carbon emissions fossil fuel as claimed in claim 1, wherein the method for injecting the flue gas rich in carbon dioxide into the carbon dioxide sequestration layer in situ is a method for injecting the flue gas rich in carbon dioxide into the carbon dioxide sequestration layer via corrosion resistant facilities and pipelines, and/or a method for injecting the flue gas rich in carbon dioxide into the carbon dioxide sequestration layer after seawater scrubbing to remove corrosive sulfur oxides.
7. A zero carbon emission fossil fuel power plant system for use in the method of claim 1, characterized in that it comprises an oxycombustion power unit (1) for generating a carbon-rich flue gas, and a carbon dioxide sequestration layer (8), the oxycombustion power unit (1) being coupled with: the system comprises a fossil fuel input unit (2), a power generation and transformation unit (3), a power cooling unit (4), an oxygen generation unit (5) and a carbon-rich flue gas purification and pressurization gas storage unit (6); an outlet (6.1) of a gas storage unit of the carbon-rich flue gas purification and pressurization gas storage unit (6) is communicated with a conveying pipe inlet (7.1) of a carbon-rich flue gas conveying pipe (7) which has a horizontal length (7.3) nearly zero and is used for circulating flue gas containing 50% -95% of carbon dioxide, an outlet (7.2) of the conveying pipe of the carbon-rich flue gas conveying pipe (7) is communicated with a carbon dioxide sealing layer (8), and the horizontal length (7.3) nearly zero is the horizontal dimension from the center line of the oxygen-rich combustion power unit (1) to the center of the conveying pipe outlet (7.2) of the carbon-rich flue gas conveying pipe (7) nearly zero.
8. The zero-carbon-emission fossil-fuel-fired power plant system according to claim 7, wherein the carbon-rich flue gas transportation pipe (7) having a horizontal length (7.3) of approximately zero is a carbon-rich flue gas transportation pipe (7) having a horizontal dimension from a center line of the oxycombustion power unit (1) to a center of a transportation pipe outlet (7.2) of the carbon-rich flue gas transportation pipe (7) of less than 50 km.
9. The zero-carbon-emission fossil-fuel-fired power plant system according to claim 7, wherein the carbon-rich flue gas transportation pipe (7) having a horizontal length (7.3) of approximately zero is a carbon-rich flue gas transportation pipe (7) having a horizontal dimension from a center line of the oxycombustion power unit (1) to a center of a transportation pipe outlet (7.2) of the carbon-rich flue gas transportation pipe (7) of less than 2 km.
10. The zero-carbon-emission fossil-fuel-fired power generation plant according to claim 7, wherein the power cooling unit (4) comprises a cooling water pump and/or a cooling fan.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836968.2A CN105587294A (en) | 2015-11-26 | 2015-11-26 | Carbon-emission-free marine oil gas energy production method and device |
| CN2015108369682 | 2015-11-26 | ||
| CN201510975090.0A CN105484705A (en) | 2015-12-22 | 2015-12-22 | Carbon-emission-free combined oil gas power-generating method and device |
| CN2015109750900 | 2015-12-22 | ||
| CN201610098296 | 2016-02-23 | ||
| CN2016100982964 | 2016-02-23 | ||
| CN201611036434.2A CN106803597A (en) | 2015-11-26 | 2016-11-23 | Zero carbon emission fossil fuel power method and device system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611036434.2A Division CN106803597A (en) | 2015-11-26 | 2016-11-23 | Zero carbon emission fossil fuel power method and device system |
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| CN113871653A true CN113871653A (en) | 2021-12-31 |
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| CN202111381338.2A Pending CN113871653A (en) | 2015-11-26 | 2016-11-23 | Zero-carbon-emission fossil fuel power generation method and device system |
| CN201611036434.2A Pending CN106803597A (en) | 2015-11-26 | 2016-11-23 | Zero carbon emission fossil fuel power method and device system |
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| CN114575800A (en) * | 2022-05-05 | 2022-06-03 | 太原理工大学 | Flue gas in-situ deep supercritical sealing and storing method |
| CN117819119A (en) * | 2024-03-06 | 2024-04-05 | 太原理工大学 | Continuous integrated device and method for trapping, sealing and separating underground rock stratum of flue gas |
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| CN107542442A (en) * | 2017-09-26 | 2018-01-05 | 碧海舟（北京）节能环保装备有限公司 | A kind of energy-efficient low stain strength fire flood system |
| WO2019071526A1 (en) * | 2017-10-12 | 2019-04-18 | 彭斯干 | Zero-carbon emission fossil fuel power generation method and apparatus system |
| WO2020000121A1 (en) * | 2018-06-25 | 2020-01-02 | 彭斯干 | Method and device for producing low-carbon emission fossil fuel |
| AU2022299989A1 (en) * | 2021-06-23 | 2024-02-08 | Sigan Peng | Fossil fuel thermodynamic system and carbon dioxide emission reduction method and device thereof |
| CN115445391A (en) * | 2022-08-19 | 2022-12-09 | 浙江海洋大学 | Device and method for capturing and storing ocean carbon |
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