• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention called "system and procedure of capture of co2 of the combustión gases", consists of the installation and procedure of capture and sequestration of carbon dioxide or co2, coming from the combustión gases of thermal installations that operate with fossil fuels (coal, fuel oil, diesel oil, gasoline, ethanol, and natural gas). It is based on separating the co2 from the nitrogen contained in the combustión gases by single-stage centrifugation or double-stage cascade, and storage by compression in two phases with intermediate cooling to be stored at a pressure in around 80 bar. The residual thermal energy of the compression is recovered by the coolers of co2 to feed a thermoelectric plant, whose electrical energy is recovered to supplement the supply of electric power to the compressors of co2. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2618290A1
    申请号:ES201500911
    申请日:2015-12-18
    公开日:2017-06-21
    发明作者:Ramón FERREIRO GARCÍA
    申请人:Universidade da Coruna；
    IPC主号:
    专利说明:

    CO2 capture and storage system and procedure for combustion gases. Technical Field of the Invention
    The present invention pertains to the technical field of carbon dioxide capture of thermal installations operating with fossil fuels such steam boilers, internal combustion turbines and internal combustion engines. Object of the invention
    The objective of the present invention called "SYSTEM AND PROCEDURE FOR CO2 CAPTURE OF COMBUSTION GASES", is the capture and sequestration of carbon dioxide (CO2), from the combustion gases of thermal installations operating with fossil fuels (coal , fuel oil, diesel diesel, gasoline, ethanol, or natural gas). Essentially it consists of separating the CO2 from the nitrogen by centrifugation and compressing it between 75-80 bar by means of the centrifugal separation and compression technique with intermediate cooling, where the cooling heat is partially recovered by means of a thermoelectric plant to complement the demand for electric energy used for the compression of CO2. Background of the invention
    The currently known CO2 capture procedures of flue gases are based on the following technologies:
    -  post-combustion techniques, whereby the combustion gases are injected into a liquid that absorbs CO2 as an organic solvent cooled and / or compressed. With this technique the CO2 released can be extracted by heating or lowering the pressure.
    -  Pre-combustion techniques, which consist in the fact that the primary fuel is transformed into gas by heating with water vapor and air or oxygen, known as "reforming". The result of this reaction produces essentially hydrogen and CO2, whereby CO2 is separated from hydrogen and sequestered.
    -  pre-combustion techniques, in which pure oxygen is used to burn the fuel. The result of combustion with pure oxygen produces water vapor and CO2, which is separated and sequestered.
    The CO2 capture technique proposed in this invention belongs to the post-combustion group and consists of separating the CO2 from the flue gases by centrifugation and storage by multi-stage compression with intermediate cooling, where the cooling heat of the CO2 is partially recovered for use in a thermoelectric plant, which partially supplies the demand for electric energy used by CO2 compressors. Based on the capture and storage procedures with known and cited conventional techniques, the technique object of the invention is unknown and innovative. Brief Description of the Invention
    The invention called "SYSTEM AND PROCEDURE FOR CO2 CAPTURE OF COMBUSTION GASES" is based on separating the CO2 from the nitrogen contained in the combustion gases by means of single stage centrifugation or double stage cascade, and compression storage in two phases with intermediate cooling to be stored at a pressure around 80 bar. The thermal energy of the compression is recovered to power a thermoelectric plant, whose electrical energy is recovered to complement the supply of electrical energy to the CO2 compressors. Description of the figures
    This section describes, by way of illustration and not limitation, the components that constitute the invention called "DECO2 CAPTURE SYSTEM AND PROCEDURE FOR COMBUSTION GASES" to facilitate the understanding of the invention where reference is made to the following figures:
    Figure 1 shows the scheme of the fundamental configuration of the invention called "SYSTEM AND PROCEDURE FOR CO2 CAPTURE OF COMBUSTION GASES" consisting of the following components:
    1 primary gas-gas centrifugal separator 2 secondary gas-gas centrifugal separator 3 first stage CO2 compressor 4 first stage CO2 cooler 5 second stage CO2 compressor 6 second stage CO2 cooler 7 Rankine cycle thermoelectric plant 8 flue gas supply duct 9 transfer duct from the first stage to the second 10 NITROGEN-rich gas outlet duct to the atmosphere 11 liquid CO2 storage bottles 12 tireless relief valve 13 gas outlet duct atmospheric-resistant 14 purging liquids 15 CO2 cooler at room temperature 16 working thermal fluid circulation pump Detailed description of the invention
    The CO2 CAPTURE SYSTEM AND PROCEDURE OF THE COMBUSTION GASES object of the invention is constituted by the following components:
    -  primary gas-gas centrifugal separator (1) responsible for separating part of the CO2 from the nitrogen contained in the CO2-rich combustion gases
    -  Gas-gas secondary centrifugal separator (2) responsible for separating part of the CO2 from the nitrogen contained in the CO2-poor flue gases
    -  First stage CO2 compressor (3), responsible for compressing CO2 at a pressure around 9 bar
    -  First stage CO2 cooler (4), intended to cool the compressed CO2 in the first stage and capture the heat extracted from the CO2 to be transferred to the Rankine cycle thermoelectric plant (7)
    -  second stage CO2 compressor (5) responsible for compressing the CO2 at a pressure around 80 bar
    -  second stage CO2 cooler (6) intended to cool the compressed CO2 in the second stage and capture the heat extracted from the CO2 to be transferred to the Rankine cycle thermoelectric plant (7)
    -  Rankine cycle thermoelectric plant (7) designed to convert thermal energy from the cooling of the first and second stage compressors into electrical energy
    -  flue gas supply duct (8) a
    -  transfer conduit from the first stage to the second (9)
    -  NITROGEN-rich gas outlet duct to the atmosphere (10)
    -  Liquid CO2 storage bottles (11)
    -  tireless relief valve (12)
    -  Exhaust gas duct to the atmosphere (13)
    -  liquid purge (14)
    -  CO2 cooler at room temperature (15)
    -  Working thermal fluid circulation pump (16), which consists of a thermal oil responsible for transferring heat from the CO2 compressors to the Rankine cycle machine,
    where the invention constituted by the mentioned elements is characterized:
    (a), by separating the CO2 from the combustion gases by centrifugation of the cascade gas, where the centrifuged gasses in the primary centrifugal separator (1) rejected and not captured in the form of CO2 pass to the secondary centrifugal separator (2) , being again subjected to a centrifugal separation process, whereby it is possible to extract or separate a greater proportion of CO2 from the flue gases, and
    (b), for operating so that the heat generated by the CO2 compressors (3) and (5) is used to power a Rankine cycle thermoelectric plant (7) whose electrical energy is harnessed to complement the supply of electrical energy to CO2 compressors (3) and (5).
    The operation procedure of the CO2 capture system contained in the combustion gases consists of centrifuging the combustion gases by means of two gas-gas cascade separators (1) and (2), where the gas enters the primary separator through the duct (8). The separated CO2 passes to the cooler (2) while nitrogen-rich gases exit the transfer conduit (9) from the first centrifugal separation stage (1) to the second centrifugal separation stage (2). The nitrogen-rich gas enters the atmosphere through the nitrogen-rich gas outlet duct (10), and the CO2-rich gas exits to the compressor (3), being compressed at about 9 bar and cooled in the CO2 cooler of the first stage (4). It is compressed again at about 80 bar by the second stage CO2 compressor (5) and cooled by the second stage CO2 cooler (6). The compressed CO2 at about 80 bar is cooled in the CO2 cooler at room temperature (15) and stored in the storage bottles (11). The non-condensable gases stored at room temperature are extracted by the purge valve (12) and the duct (13) into the atmosphere.
    The heat supply to the Rankine cycle thermoelectric plant (7) consists in circulating a pumped thermal working fluid by means of the working thermal fluid circulation pump (16) which captures the heat of the compressors (2) and ( 5) by means of the chillers (4) and (6) and transferred to the Rankine cycle thermoelectric plant (7), whose electrical energy is used to complement the supply of electrical energy to the compressors (2) and (5) . Preferred Embodiment of the Invention
    The preferred embodiment of the SYSTEM AND PROCEDURE FOR CO2 CAPTURE OF COMBUSTION GASES is described in the preceding section and represented in Figure 1.
    权利要求:
    Claims (2)
    [1]
    1. CO2 capture system and procedure for combustion gases, which consists of the components:
    -  primary gas-gas centrifugal separator (1) responsible for separating part of the CO2 from the nitrogen contained in the CO2-rich combustion gases
    -  Gas-gas secondary centrifugal separator (2) responsible for separating part of the CO2 from the nitrogen contained in the CO2-poor flue gases
    -  First stage CO2 compressor (3), responsible for compressing CO2 at a pressure around 9 bar
    -  First stage CO2 cooler (4), intended to cool the compressed CO2 in the first stage and capture the heat extracted from the CO2 to be transferred to the Rankine cycle thermoelectric plant (7)
    -  second stage CO2 compressor (5) responsible for compressing the CO2 at a pressure around 80 bar
    -  second stage CO2 cooler (6) intended to cool the compressed CO2 in the second stage and capture the heat extracted from the CO2 to be transferred to the Rankine cycle thermoelectric plant (7)
    -  Rankine cycle thermoelectric plant (7) designed to convert thermal energy from the cooling of the first and second stage compressors into electrical energy
    -  flue gas supply duct (8) a
    -  transfer conduit from the first stage to the second (9)
    -  NITROGEN-rich gas outlet duct to the atmosphere (10)
    -  Liquid CO2 storage bottles (11)
    -  tireless relief valve (12)
    -  Exhaust gas duct to the atmosphere (13)
    -  liquid purge (14)
    -  CO2 cooler at room temperature (15)
    -  Working thermal fluid circulation pump (16), which consists of a thermal oil responsible for transferring heat from the CO2 compressors to the Rankine cycle machine,
    where the invention constituted by the aforementioned components is characterized:
    (a), by carrying out the separation of the CO2 from the flue gases by centrifugation of the cascade gas, where the gasses centrifuged in the primary centrifugal separator (1), rejected and not captured in the form of CO2 pass to the secondary centrifugal separator (2 ), being again subjected to a centrifugal separation process, whereby it is possible to extract or separate a greater proportion of CO2 from the flue gases, and
    (b), for operating so that the heat generated by the CO2 compressors (3) and (5) is used to power a Rankine cycle thermoelectric plant (7) whose electrical energy is harnessed to complement the supply of electrical energy to CO2 compressors (3) and (5).
    [2]
    2. The CO2 capture system and method of the combustion gases according to claim 1, characterized by the operating procedure according to which it consists in centrifuging the combustion gases by means of two gas-gas separators
    (1) and (2) in cascade, where the gas enters the primary separator through the conduit (8). The separated CO2 passes to the cooler (2) while nitrogen-rich gases exit the transfer conduit (9) from the first centrifugal separation stage (1) to the second centrifugal separation stage (2). The nitrogen-rich gas enters the atmosphere through the nitrogen-rich gas outlet duct (10), and the CO2-rich gas exits to the compressor (3), being compressed at about 9 bar and cooled in the CO2 cooler of the first stage (4). It is compressed again at about 80 bar by the second stage CO2 compressor (5) and cooled by the second stage CO2 cooler (6). The compressed CO2 at about 80 bar is cooled in the CO2 cooler at room temperature (15) and stored in the storage bottles (11). The non-condensable gases stored at room temperature are extracted by the purge valve (12) and the duct (13) into the atmosphere.
    The heat supply to the Rankine cycle thermoelectric plant (7) consists in circulating a pumped thermal working fluid by means of the working thermal fluid circulation pump (16) which captures the heat of the compressors (2) and ( 5) by means of the chillers (4) and (6) and transferred to the Rankine cycle thermoelectric plant (7), whose electrical energy is used to complement the supply of electrical energy to the compressors (2) and (5) .
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    同族专利:
    公开号 | 公开日
    ES2618290B1|2017-12-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5133190A|1991-01-25|1992-07-28|Abdelmalek Fawzy T|Method and apparatus for flue gas cleaning by separation and liquefaction of sulfur dioxide and carbon dioxide|
    US20110000227A1|2009-07-06|2011-01-06|Yuji Kamiya|Compressor|
    法律状态:
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    ES201500911A|ES2618290B1|2015-12-18|2015-12-18|CO2 capture and storage system and procedure for combustion gases|ES201500911A| ES2618290B1|2015-12-18|2015-12-18|CO2 capture and storage system and procedure for combustion gases|
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