• 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:
    A system for the cryogenic processing and storing the combustion product of a heat engine, in which the cooled and compressed anhydrous gases are fed through a liquefying/superheating heat exchanger to a cryogenic condensation/collection vessel for the carbon dioxide which is liquefied therein by the combustion oxygen which is stored in the liquid state in a cryogenic oxygen tank and traverses said cryogenic condensation/collection vessel through a coil, said liquid oxygen of the cryogenic oxygen tank being superheated while simultaneously partially liquefying the carbon dioxide in said liquefying/superheating heat exchanger while the oxygen and inert gases present in said cryogenic condensation/collection vessel are recovered. Modifications are also provided.
    公开号:SU1722241A3
    申请号:SU884613044
    申请日:1988-12-02
    公开日:1992-03-23
    发明作者:Брайгенти Аттилио
    申请人:Текномаре С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a system for cryogenic treatment and accumulation of combustion products, by means of which the combustion gas of a heat engine that cannot be directly removed from the exhaust pipe to the atmosphere, but can be easily and economically collected, at least into one that has a small volume combined capacity at low energy costs, and the system has a very small total weight (more specifically, but not exclusively, the system finds its main use in systems generating energy from heat engines installed on ship’s vehicles or in stationary submarine systems, in particular if they are designed to work at depth with a requirement of considerable independence between two replenishment stocks, especially if, in addition to this requirement, there is a need to maintain a constant mass system so that there is a state of balance between weight and lift throughout the time energy is applied.
    Another potential application of the system of the invention is the use in cases where vehicles or installations, including ground or air, are required to operate in an environment deprived of oxygen or poor in oxygen, and with restrictions on the possibility of free exhaust gaseous products of combustion into the environment, which dictates the need for their accumulation or chemical treatment.
    The aim of the invention is to increase the efficiency of the system.
    FIG. 1 shows a flowchart of a heat engine using systems for processing and accumulating combustion products; in fig. 2 is a variant of one of the elements of the technological process; in fig. 3 - modification of the process flow.
    The process flow diagram (FIG. 1) includes a cooling and dehydrating unit I for exhaust gases of a heat engine 2, a compressor 3, a gas cooler 4 for cooling compressed dehydrated gases, a cryogenic system 5 for treating and storing combustion products and a unit 6 for regenerating gas.
    Exhaust (exhaust) gases, displaced by heat engine 2 at high temperature, usually between 350 and 500 ° C, flowing through line 7, are cooled in
    the exhaust gas cooler 8 to a temperature somewhat higher than the surrounding cold source, i.e. sea water and atmosphere surrounding the system. This cooler 8 can be cooled either directly by the flow of the external environment, i.e. water or air, or an intermediate stream cooled by the external environment in an additional
    0 heat exchanger (not shown). It must also provide radiation in half the space that is in shadow in relation to solar radiation.
    The cooled mixture then enters
    5, the condensate separator 9, where the dried part flows through the partial discharge pipe 10 of the non-condensed gases, and the condensate flows through the drain line 11, through which it passes through the valve 12,
    0 is controlled by a level regulator 13, and is collected in a tank 14 having an opening 15, which communicates the tank 14 with the atmosphere. Remaining in the separator 9 uncondensed gases flow through
    5 pipeline 16 in the dehydrating circuit. The gas in line 16, equivalent in mass flow, to an increase in unit time of the mass of dry gas produced during combustion in an engine consists of a mixture,
    0 containing carbon dioxide, unspent oxygen, water vapor and inert gas, i.e. gas, not obtained as a result of burning, but only limiting the maximum temperature. For the invention, the exact nature of the inert gas is not a determining factor, but it is clear that the energy used in compressing the gas stream passing through conduit 16 is minimal if this inert gas is mainly carbon dioxide. .
    The gas flowing through conduit 16 passes through a dehydrating circuit, which contains a condensate separator 17 and
    5 a drying filter 18 including hygroscopic substances (usually silica gel), on which the remaining water vapor contained in the mixture is almost completely adsorbed. The cooled anhydrous gas is pumped out in the dehydrating circuit by means of a compressor 3, which sucks the mixture and compresses it to the pressure necessary to liquefy carbon dioxide in a cryogenic system 5 for cryogenic
    5, the pressure is determined by the mass and enthalpy balances in system 5. After each stage of compressor 3, whether it is single-stage or multi-stage, a cooler 4 is provided, similar to cooler 8, which allows for compression work and the enthalpy supplied to system 5 is minimal.
    The anhydrous compressed gas enters the system 5 through the non-return valve 19 and passes through a liquefying superheating heat exchanger 20, where the mixture is further cooled and the carbon dioxide partially liquefies, and the said gas is cooled with saturated oxygen vapor from the tank 21, and the oxygen is overheated .
    The liquefaction of carbon dioxide is completed in a cryogenic tank 22 for condensation-collection of cryogenic carbon dioxide cooled by liquid oxygen, which evaporates at a low temperature in the coil 23.
    The inert gases, in addition to carbon dioxide and oxygen, present in the compressed anhydrous gas, do not condense, are recovered, and are fed through valve 24 and pressure compensator 25 to unit 6 for regeneration. The valve 24 is actuated by an appropriate control system according to the temperature and pressure in the vessel 22.
    Liquid oxygen contained in the cryogenic tank 21 is supplied through a control valve 26 to the coil 23, where it is evaporated to extract heat from carbon dioxide contained in the tank 22 for cryogenic condensation collection. This tank is located below the tank 21 to provide for the natural circulation of oxygen as a result of the density difference between the descent line 27 and the lift line 28, avoiding the need to use complex pumps for liquid oxygen. The injection valve is actuated by an appropriate control system to maintain the pressure in the tank 21 at a predetermined level exceeding the input pressure of the machine 2.
    Oxygen present in the saturated vapor phase in the tank 21 is introduced into the node 6 under the action of the pressure difference between the tank 21 and the gas regeneration unit 6 through a non-return valve 29, a liquefying (superheating) heat exchanger 20 and a pressure compensator 25. The oxygen vapor is heated in the heat exchanger 20 to a temperature close to the ambient temperature and mixed in the pressure compensator 25 with oxygen and any inert gases extracted from the cryogenic tank 22.
    The control valve 30 for supplemental oxygen supplies a certain amount of rich to the damper 31 of the pressure.
    oxygen gas coming from the pressure compensator 25 under the action of pressure difference and able to restore the mixture to the composition required for the heat engine 2 and the type of inert gas used.
    FIG. 1, reference numeral 32 denotes a tank for liquid or gaseous fuel used in a heat engine 2.
    FIG. 2 shows the same cryogenic system 5 as in FIG. 1, but in which said liquefying (overheating) heat exchanger 20 is made in the form of a coil located inside a cryogenic tank 22 and connected to a tank 21 for cryogenic oxygen and a pressure compensator 25.
    FIG. 3, the system 5 for cryogenic processing and accumulation of combustion products is similar to the system 5 shown in FIG. 1. Liquefied gas fuel for a heat engine 2 stored in a cryogenic tank 33 is used in the same way as liquid oxygen to cool and liquefy a portion of the compressed anhydrous gases from cooler 4 in order to achieve an additional reduction in temperature and pressure liquefaction of dioxide carbon and, therefore, further reduce the mechanical energy required to effect compression in compressor 3.
    Obviously, in this variant, evaporated and superheated fuel leaving the additional
    (overheating) heat exchanger 34 is supplied to the intake pipe of the heat engine through the power supply unit 35, while oxygen and inert gas present in the additional tank 36 for condensation-collection of cryogenic carbon dioxide is fed to the pressure compensator 25.
    权利要求:
    Claims (2)
    [1]
    Claim 1. System for cryogenic treatment and accumulation of combustion products of a heat engine, comprising an exhaust gas cooler, a condensate separator from cooled gases, a partial discharge pipeline for non-condensed gases in the heat engine inlet pipe, a non-condensable gas exhaust pipeline, and the compressor are sequentially placed , gas cooler, compressed gas pipeline, liquefying-overheating heat exchanger and cryogenic condensing tank carbon dioxide boron, a cryogenic oxygen reservoir and a cryogenic oxygen supply line and a reservoir and carbon dioxide from a cryogenic tank into the intake manifold of a heat engine; In order to increase efficiency, a coil with evaporating liquid oxygen, connected to a cryogenic oxygen reservoir by means of a closed loop, is installed in a cryogenic tank. and a control valve to maintain a constant pressure in the oxygen tank.
    [2]
    2. The system of claim 1, wherein the cryogenic oxygen supply line and the carbon dioxide supply line are connected to the inlet pipeline through a pressure balancer.
    Fig.Z
    ,
    . j
    类似技术:
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    KR900017641A|1990-12-19|Systems and methods for removing hydrocarbons or chemical vapors from air-vapor mixtures
    US2622414A|1952-12-23|N ven tor
    同族专利:
    公开号 | 公开日
    FR2624200B1|1994-04-29|
    FR2624200A1|1989-06-09|
    US4891939A|1990-01-09|
    IT1223213B|1990-09-19|
    IT8722885D0|1987-12-04|
    DE3840967A1|1989-09-21|
    DE3840967C2|1990-10-25|
    CA1304669C|1992-07-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2895291A|1948-12-02|1959-07-21|Baldwin Lima Hamilton Corp|Recycling method of operating for power plants|
    US3559402A|1969-04-24|1971-02-02|Us Navy|Closed cycle diesel engine|
    US3862624A|1970-10-10|1975-01-28|Patrick Lee Underwood|Oxygen-hydrogen fuel use for combustion engines|
    US3861367A|1972-04-13|1975-01-21|John J Kelmar|Non-polluting internal combustion engine system|
    US3775976A|1972-05-26|1973-12-04|Us Navy|Lox heat sink system for underwater thermal propulsion system|
    US3977365A|1973-08-06|1976-08-31|Vierling Donald E|Method of oxidizing fuels|
    IT1020634B|1974-06-11|1977-12-30|Shell Bv|INTERNAL COMBUSTION ENGINE WITH EXHAUST GAS RECYCLING|IT1217489B|1988-05-04|1990-03-22|Giunio Guido Santi|CLOSED CIRCUIT SYSTEM FOR EXHAUST GAS RECYCLING THERMAL MOTOR|
    ES2040114T3|1989-02-02|1993-10-01|C.D.S.S. Limited|RECIRCULATION SYSTEM.|
    FR2661453B1|1990-04-26|1994-07-08|Bertin & Cie|AUTONOMOUS THERMAL ENERGY GENERATOR AND UNDERWATER ENERGY MODULE COMPRISING SUCH A GENERATOR.|
    DE4123377A1|1991-07-15|1993-01-21|Neumann Siegmar|Flue gas purificn. for combustion plant or refuse incinerator - waste gas classification uses cooling cells at continually decreasing temp., with flue gas passed downwards through cells|
    FR2701547B1|1993-02-15|1995-03-31|France Etat Armement|Air regeneration device in a closed enclosure.|
    US6185932B1|1999-07-23|2001-02-13|Sea C. Park|Quick-heating catalytic converter|
    GB2365492B|2000-08-07|2005-01-26|Finch Internat Ltd|Method of generating electricity comprising combusting fuel|
    US6893615B1|2001-05-04|2005-05-17|Nco2 Company Llc|Method and system for providing substantially water-free exhaust gas|
    US7765794B2|2001-05-04|2010-08-03|Nco2 Company Llc|Method and system for obtaining exhaust gas for use in augmenting crude oil production|
    US7445761B1|2003-05-02|2008-11-04|Alexander Wade J|Method and system for providing compressed substantially oxygen-free exhaust gas for industrial purposes|
    US7409948B2|2003-12-24|2008-08-12|Roger Kennedy|Engine efficiency regulator|
    US20070138326A1|2005-12-20|2007-06-21|Zhiyu Hu|Automatic microfluidic fragrance dispenser|
    US20090288447A1|2008-05-22|2009-11-26|Alstom Technology Ltd|Operation of a frosting vessel of an anti-sublimation system|
    US20090301108A1|2008-06-05|2009-12-10|Alstom Technology Ltd|Multi-refrigerant cooling system with provisions for adjustment of refrigerant composition|
    US8163070B2|2008-08-01|2012-04-24|Wolfgang Georg Hees|Method and system for extracting carbon dioxide by anti-sublimation at raised pressure|
    US20100050687A1|2008-09-04|2010-03-04|Alstom Technology Ltd|Liquefaction of gaseous carbon-dioxide remainders during anti-sublimation process|
    EP2665808B1|2011-01-20|2016-12-07|Saudi Arabian Oil Company|On-board recovery and storage of c02 from motor vehicle exhaust gases|
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    KR101739167B1|2011-01-20|2017-06-08|사우디 아라비안 오일 컴퍼니|Direct Densification Method and System Utilizing Waste Heat for On-Board Recovery and Storage of CO2 From Motor Vehicle Internal Combustion Engine Exhaust Gases|
    ES2616028T3|2011-01-20|2017-06-09|Saudi Arabian Oil Company|Reversible adsorption method on solid and system that uses residual heat for recovery and storage on board CO2|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT2288587A|IT1223213B|1987-12-04|1987-12-04|SYSTEM FOR THE CRYOGENIC TREATMENT AND STORAGE OF COMBUSTION PRODUCTS OF HEAT ENGINES|
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