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    • 2. 发明公开
    • 이산화탄소 액화장치 및 그 액화방법
    • 二氧化碳液化工艺及装置
    • KR1020130074230A
    • 2013-07-04
    • KR1020110142191
    • 2011-12-26
    • 대우조선해양 주식회사
    • 유병용나희승김성배우일국오영태
    • F25J1/02F25J5/00
    • F25J1/0027F25J1/0052F25J1/0087F25J1/0204F25J2240/40F25J1/0257F25B9/008F25B9/14F25J1/0095F25J2210/80F25J2235/02F25J2290/60
    • PURPOSE: A carbon dioxide liquefying apparatus and a liquefying method of the same are provided to drastically reduce costs for operation and maintenance and to improve cooling efficiency. CONSTITUTION: A carbon dioxide liquefying apparatus includes a first cooler which cools high pressure carbon dioxide by an open water cycle for the first time, an adiabatic expansion unit which is arranged in a lower side of the first cooler for lowering a temperature and pressure by adiabatically expanding cooled high pressure carbon dioxide, and a second cooler which performs a second cooling process for the carbon dioxide passing through the adiabatic expansion unit by a refrigeration cycle. A carbon dioxide liquefying method includes a carbon dioxide transferring step in which the high pressure carbon dioxide is transferred, a first cooling step in which transferred high pressure carbon dioxide is cooled by the open water cycle for the first time, an adiabatically expanding step in which the temperature and the pressure are lowered by adiabatically expanding the cooled high pressure carbon dioxide, and a second cooling step in which adiabatically expanded carbon dioxide is cooled for the second time by the refrigeration cycle at a proper temperature for carrying and storage.
    • 目的:提供二氧化碳液化装置及其液化方法,大大降低运行维护成本,提高冷却效率。 构成:二氧化碳液化装置包括第一冷却器,第一冷却器首次通过开放水循环冷却高压二氧化碳;绝热膨胀单元,布置在第一冷却器的下侧,用于通过绝热降低温度和压力 膨胀冷却的高压二氧化碳,以及第二冷却器,其通过制冷循环对通过绝热膨胀单元的二氧化碳进行第二冷却过程。 二氧化碳液化方法包括二氧化碳转移步骤,其中转移高压二氧化碳,第一冷却步骤,其中转移的高压二氧化碳通过开放水循环第一次冷却;绝热膨胀步骤,其中 通过绝热膨胀冷却的高压二氧化碳来降低温度和压力,并且第二冷却步骤,其中绝热膨胀的二氧化碳在适当温度下通过制冷循环第二次冷却以进行运送和储存。
    • 5. 发明授权
    • 반폐쇄 루프 액화 천연 가스 처리
    • 半闭式液化天然气工艺
    • KR101302310B1
    • 2013-08-30
    • KR1020067026401
    • 2005-06-06
    • 코노코 필립스 컴퍼니
    • 이튼앤쏘니피.
    • F25J1/02
    • F25J1/0022F25J1/004F25J1/0045F25J1/0052F25J1/0082F25J1/0085F25J1/0087F25J1/0095F25J1/0207F25J1/021F25J1/0218F25J1/023F25J1/0244F25J1/025F25J1/0265F25J2220/64
    • 본 발명은 더욱 효율적이며 효과적인 하이브리드 시스템을 제공하기 위해 폐쇄 루프 시스템의 몇몇 장점을 개방 루프 시스템의 몇몇 장점과 조합한, 액화 천연 가스(LNG)를 생성하기 위한 반폐쇄 루프 시스템에 관한 것이다. 반폐쇄 루프 시스템에서, 최종 메탄 냉동 사이클은 팽창식 냉각에 반해, 간접 열 교환을 거쳐 천연 가스 스트림의 현저한 냉각을 제공한다. 메탄 냉동 사이클로부터의 LNG 제품의 작은 부분은 메탄 냉동 사이클 내의 보충 냉매로서 사용된다. 메탄 냉동 사이클로부터의 냉매의 가압된 부분은 연료 가스로서 사용된다. 메탄 냉동 사이클로부터의 여분의 냉매는 연소되기보다는 처리된 천연 가스 스트림과 재조합될 수 있다.
      액화 천연 가스, 반폐쇄 루프 시스템, 메탄 냉동 사이클, 연료 가스, 냉매
    • 一种用于生产液化天然气(LNG)的半闭环系统,其将闭环系统的某些优点与开环系统的某些优点相结合,以提供更有效和更有效的混合系统。 在半闭环系统中,与膨胀型冷却相反,最终的甲烷制冷循环通过间接传热提供天然气流的显着冷却。 来自甲烷制冷循环的LNG产品的一小部分用作甲烷制冷循环中的补充制冷剂。 来自甲烷制冷循环的制冷剂的加压部分用作燃料气体。 来自甲烷制冷循环的过量制冷剂可以与加工的天然气流重组,而不是扩口。
    • 10. 发明授权
    • 이산화탄소 재액화 공정
    • 二氧化碳再次液化过程
    • KR101242949B1
    • 2013-03-12
    • KR1020120055505
    • 2012-05-24
    • 한국가스공사
    • 이상규전상희이영범최건형차규상손영순
    • F25J5/00F17C7/00
    • F25J1/0027F25J1/0037F25J1/004F25J1/0045F25J1/0202F25J2210/90F25J2220/82F25J2240/40F25J5/00B63H21/38F17C7/00F25J1/0095F25J2210/80
    • PURPOSE: A carbon dioxide re-liquefaction process is provided to cool one sub-stream with another sub-stream using thermodynamic characteristics of each sub-stream after separating a carbon dioxide stream into several sub-streams though a first and a second separation step, thereby efficiently cooling the carbon dioxide stream. CONSTITUTION: A carbon dioxide re-liquefaction process for re-liquefying the carbon dioxide stream evaporated from a tank(500), which stores liquefied carbon dioxide gas, comprises the following steps: a first flowing step of flowing the carbon dioxide stream into a heat exchange region; a first compression step of compressing the carbon dioxide stream; a first cooling step of cooling the carbon dioxide stream; a second compression step of re-compressing the carbon dioxide stream; a second cooling step of re-cooling the carbon dioxide stream; a first separation step of separating the carbon dioxide stream into a first sub-stream and a second sub-stream; a second flowing step of flowing the first sub-stream into the heat exchange region; a mixing step of mixing the first sub-stream which has gone through the second flowing step with the carbon dioxide stream which has gone through the first compression step or the first cooling step; a third flowing step of flowing the second sub-stream into the heat exchange region; a second separation step of separating the second sub-stream which has gone through the third flowing step into a third sub-stream in a gas phase and a fourth sub-stream in a liquid phase; and a collection step of collecting the fourth sub-stream which has gone through the second separation step into the tank.
    • 目的:提供一种二氧化碳再液化方法,用于通过第一和第二分离步骤将二氧化碳流分离成几个子流之后,使用每个子流的热力学特性来冷却具有另一子流的一个子流, 从而有效地冷却二氧化碳流。 构成:用于再液化从储存液化二氧化碳气体的罐(500)中蒸发的二氧化碳流的二氧化碳再液化过程包括以下步骤:将二氧化碳流流入热的第一流动步骤 交换区; 压缩二氧化碳流的第一压缩步骤; 冷却二氧化碳流的第一冷却步骤; 重新压缩二氧化碳流的第二压缩步骤; 再次冷却二氧化碳流的第二冷却步骤; 将二氧化碳流分离成第一子流和第二子流的第一分离步骤; 使第一子流流入热交换区域的第二流动步骤; 混合步骤,将经过第二流动步骤的第一副流与经过第一压缩步骤或第一冷却步骤的二氧化碳流混合; 使第二子流流入热交换区域的第三流动步骤; 第二分离步骤,将通过第三流动步骤的第二子流分离成气相中的第三子流,并将液相中的第四子流分离; 以及收集已经经过第二分离步骤的第四子流进入罐的收集步骤。