公开(公告)号：US06347531B1

公开(公告)日：2002-02-19

申请号：US09415636

申请日：1999-10-12

申请人： Mark Julian Roberts ,  Rakesh Agrawal ,  Tamara Lynn Daugherty

发明人： Mark Julian Roberts ,  Rakesh Agrawal ,  Tamara Lynn Daugherty

IPC分类号： F25J300

CPC分类号： F25J1/0055 ,  F25J1/0022 ,  F25J1/0212 ,  F25J1/0291 ,  F25J1/0292 ,  F25J2220/60

摘要： A method of gas liquefaction wherein the refrigeration to cool and liquefy an essentially water-free feed gas is provided by a single recirculating mixed refrigerant cycle in which refrigeration is provided by the vaporization of two mixed refrigerant streams of different compositions at a lower and higher pressure levels respectively. A lower pressure level vaporizing refrigerant cools the feed gas stream in a first cooling zone and a higher pressure level vaporizing refrigerant further cools and condenses the cooled gas in a second cooling zone to provide the final liquid product. The lower pressure level vaporizing refrigerant is provided by one or more liquids obtained by ambient cooling of compressed mixed refrigerant vapor. The vaporized lower pressure level refrigerant can be returned to the refrigerant compressor at a temperature below ambient, without further warming, and this cool refrigerant is compressed and combined with the vaporized higher pressure level refrigerant, which is returned at about ambient temperature.

摘要翻译： 一种气体液化方法，其中用于冷却和液化基本上无水的进料气体的制冷是通过单个循环混合制冷剂循环提供的，其中通过在较低和较高压力下蒸发不同组成的两种混合制冷剂流来提供制冷 级别。 较低压力水平的蒸发制冷剂在第一冷却区域中冷却进料气流，并且较高压力水平的蒸发制冷剂进一步冷却并冷凝第二冷却区中的冷却气体以提供最终的液体产物。 低压级蒸发制冷剂由通过压缩混合制冷剂蒸汽的环境冷却而获得的一种或多种液体提供。 蒸发的低压级制冷剂可以在低于环境温度的温度下返回到制冷剂压缩机，而不会进一步升温，并且该冷却的制冷剂被压缩并与在大约环境温度下返回的蒸发的高压级制冷剂组合。

公开(公告)号：US06347532B1

公开(公告)日：2002-02-19

申请号：US09415837

申请日：1999-10-12

申请人： Rakesh Agrawal ,  Tamara Lynn Daugherty ,  Mark Julian Roberts

发明人： Rakesh Agrawal ,  Tamara Lynn Daugherty ,  Mark Julian Roberts

IPC分类号： F25J100

CPC分类号： F25J1/0022 ,  F25J1/0055 ,  F25J1/0057 ,  F25J1/0214 ,  F25J1/0216 ,  F25J1/0239 ,  F25J1/0241 ,  F25J1/0249 ,  F25J1/0292 ,  F25J1/0296 ,  F25J2205/02 ,  F25J2205/90 ,  F25J2220/64

摘要： Method of producing liquefied natural gas (LNG) whereby refrigeration for cooling and liquefaction is provided by a mixed refrigerant system precooled by another refrigeration system. At least one liquid stream is derived from the partial condensation and separation of the mixed refrigerant at a temperature higher than the lowest temperature provided by the precooling system when the mixed refrigerant is condensed at a final highest pressure. When the mixed refrigerant is condensed at a pressure lower than the final highest pressure, condensation is effected at a temperatures equal or higher than the lowest temperature provided by the precooling system. The mixed refrigerant liquid is used to provide refrigeration at a temperature lower than that provided by the precooling system.

摘要翻译： 生产液化天然气（LNG）的方法，其中用于冷却和液化的制冷由另一制冷系统预冷却的混合制冷剂系统提供。 当混合制冷剂在最终最高压力下冷凝时，至少一种液体流源自在比预冷系统提供的最低温度高的温度下混合制冷剂的部分冷凝和分离。 当混合的制冷剂在低于最终最高压力的压力下冷凝时，在等于或高于由预冷却系统提供的最低温度的温度下进行冷凝。 混合的制冷剂液体用于在比预冷系统提供的温度低的温度下提供制冷。