公开(公告)号：US5533437A

公开(公告)日：1996-07-09

申请号：US375881

申请日：1995-01-20

申请人： Lee J. Howard ,  Howard C. Rowles

发明人： Lee J. Howard ,  Howard C. Rowles

IPC分类号： B01D53/14 ,  B01J8/24 ,  C07C7/00 ,  C07C7/11 ,  C08F6/00 ,  B01D53/00

CPC分类号： C07C7/005 ,  B01D53/1487 ,  B01J8/24 ,  C07C7/11 ,  C08F6/005 ,  F25J3/0219 ,  F25J3/0238 ,  F25J3/0247 ,  F25J3/0257 ,  F25J3/062 ,  F25J3/064 ,  F25J3/065 ,  F25J3/066 ,  B01D2257/702 ,  F25J2200/80 ,  F25J2205/40 ,  F25J2205/50 ,  F25J2210/06 ,  F25J2210/12 ,  F25J2215/62 ,  F25J2245/42 ,  F25J2260/42 ,  F25J2260/60 ,  F25J2270/02 ,  F25J2270/90

摘要： Hydrocarbons are recovered from the product purge gas in an alkene polymerization process by absorption of heavier hydrocarbons from the purge gas by an intermediate hydrocarbon stream to yield a vapor rich in inert gas and alkene monomer. Alkene monomer is condensed at low temperatures from the inert gas, flashed and vaporized to provide refrigeration for the condensation step, and recycled to the polymerization process. The intermediate hydrocarbon from the absorption step is recycled to the polymerization process. Optionally a portion of the inert gas is reused for purge gas.

摘要翻译： 在烯烃聚合过程中，通过用中间体烃流吸收来自吹扫气体的较重烃，从而产生富含惰性气体和烯烃单体的蒸汽，从产物吹扫气中回收碳氢化合物。 烯烃单体在低温下从惰性气体中冷凝，闪蒸并蒸发，为缩合步骤提供冷却，并循环到聚合过程中。 将来自吸收步骤的中间体烃再循环到聚合过程中。 可选地，一部分惰性气体被再次用于净化气体。

公开(公告)号：US12050054B2

公开(公告)日：2024-07-30

申请号：US16851632

申请日：2020-04-17

申请人： EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

发明人： Yijun Liu ,  Ananda Krishna Nagavarapu

IPC分类号： F25J1/00 ,  F25J1/02

CPC分类号： F25J1/0022 ,  F25J1/0037 ,  F25J1/0042 ,  F25J1/0207 ,  F25J1/0269 ,  F25J2200/38 ,  F25J2260/02 ,  F25J2260/42

摘要： A method and apparatus for producing liquefied natural gas (LNG) from a natural gas stream. Heavy hydrocarbons are removed from the natural gas stream in a separator to generate a bottom stream and a separated natural gas stream, which is used as a coolant in a heat exchanger to generate a pretreated natural gas stream. The pretreated natural gas stream is compressed and cooled to form a chilled pretreated natural gas stream, part of which forms a recycle stream to exchange heat with the separated natural gas stream in the heat exchanger, thereby generating a cooled recycle stream. The temperature and pressure of the cooled recycle stream are reduced. The cooled recycle stream is then separated into an overhead stream and a reflux stream, which is directed to the separator. The chilled pretreated gas stream is liquefied to form LNG.

公开(公告)号：US20140130542A1

公开(公告)日：2014-05-15

申请号：US13675253

申请日：2012-11-13

申请人： William George Brown ,  Bill Roger Minton ,  Ned Phillip Baudat

发明人： William George Brown ,  Bill Roger Minton ,  Ned Phillip Baudat

IPC分类号： F25J1/00 ,  F25J3/02

CPC分类号： F25J3/0214 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0257 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2200/74 ,  F25J2205/04 ,  F25J2205/66 ,  F25J2210/42 ,  F25J2215/04 ,  F25J2260/42 ,  F25J2270/12 ,  F25J2270/42 ,  F25J2270/904

摘要： A novel method and system for liquefying and distilling natural gas into high purity liquid methane (LNG) and NGL product streams. Heat exchangers and distillation towers are configured to produce high purity liquefied natural gas (LNG) and NGL product streams, while also rejecting excess nitrogen contained in the inlet gas stream, utilizing liquid nitrogen as the process refrigerant. A molecular sieve pretreatment system is configured to utilize the vaporized nitrogen stream for regeneration of the molecular sieve beds which are designed for removing water and carbon dioxide from the inlet gas stream

摘要翻译： 将天然气液化和蒸馏成高纯度液态甲烷（LNG）和NGL产品流的新方法和系统。 热交换器和蒸馏塔被配置为产生高纯度液化天然气（LNG）和NGL产物流，同时还利用液氮作为工艺制冷剂排除入口气流中所含的过量氮。 分子筛预处理系统被配置为利用蒸发的氮气流用于分子筛床的再生，其被设计用于从入口气流中除去水和二氧化碳

公开(公告)号：US06598423B1

公开(公告)日：2003-07-29

申请号：US10046665

申请日：2002-01-22

申请人： Claus Emmer ,  Thomas K. Drube

发明人： Claus Emmer ,  Thomas K. Drube

IPC分类号： F25J100

CPC分类号： B01D53/261 ,  B01D53/04 ,  B01D53/0446 ,  B01D2256/24 ,  B01D2257/504 ,  B01D2257/80 ,  B01D2259/402 ,  B01D2259/416 ,  F25J1/0022 ,  F25J1/0221 ,  F25J2205/66 ,  F25J2205/68 ,  F25J2210/42 ,  F25J2245/42 ,  F25J2245/90 ,  F25J2260/42 ,  F25J2290/62 ,  Y02C10/08

摘要： A liquefaction system includes a source tank containing a supply of liquid nitrogen with a head space there above filled with nitrogen vapor. A pump transfers the liquid nitrogen to a heat exchanger. The heat exchanger also receives natural gas that has been processed in a purifier. The natural gas is liquefied by free cold from the liquid nitrogen so that liquid natural gas (LNG) is produced. The LNG travels to an LNG destination tank for storage and/or transport. The liquid nitrogen is vaporized in the heat exchanger. The resulting nitrogen gas is directed to a process system that may include, for example, cylinders for welding or other applications. Between liquefaction cycles, the purifier is regenerated by a vacuum and nitrogen vapor from the head space of the source tank. Steel shot is mixed with absorbent in the purifier so that the absorbent is cooled for increased performance.

摘要翻译： 液化系统包括一个含有液氮供应源的源罐，上面填充有氮气蒸气。 泵将液氮转移到热交换器。 热交换器还接收在净化器中处理过的天然气。 天然气由液氮自由冷却，液化天然气（LNG）生产。 LNG运往LNG目的地储罐进行储存和/或运输。 液氮在热交换器中蒸发。 得到的氮气被引导到处理系统，其可以包括例如用于焊接或其它应用的气缸。 在液化循环之间，净化器通过真空和氮气从源罐的顶部空间再生。 将钢丸与净化器中的吸收剂混合，使得吸收剂被冷却以提高性能。

公开(公告)号：US06393867B1

公开(公告)日：2002-05-28

申请号：US09762271

申请日：2001-02-06

申请人： Alain Guillard

发明人： Alain Guillard

IPC分类号： F25J500

CPC分类号： F25J3/04606 ,  F25J1/0015 ,  F25J1/0202 ,  F25J1/0221 ,  F25J1/0282 ,  F25J3/04018 ,  F25J3/04024 ,  F25J3/0403 ,  F25J3/04036 ,  F25J3/0409 ,  F25J3/04121 ,  F25J3/04127 ,  F25J3/04139 ,  F25J3/04145 ,  F25J3/04224 ,  F25J3/04254 ,  F25J3/04296 ,  F25J3/04351 ,  F25J3/04381 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04527 ,  F25J3/04539 ,  F25J3/04563 ,  F25J2210/62 ,  F25J2215/40 ,  F25J2215/42 ,  F25J2235/02 ,  F25J2235/42 ,  F25J2245/42 ,  F25J2260/42 ,  F25J2260/44 ,  F25J2290/62 ,  Y02E20/14

摘要： In a combined plant consisting of a fluid production apparatus (P) having a main air compressor (44) and a fluid-consuming unit (2), a gas derived from the unit is expanded in a turbine (10, 20, 30, 40, 150) or another device capable of generating mechanical energy which drives a compressor (14, 24, 34, 44, 154° [sic]. Another turbine or device may expand another gas or the same gas derived from the unit so as to drive another compressor.

摘要翻译： 在由具有主空气压缩机（44）和流体消耗单元（2）的流体生产装置（P）组成的组合设备中，来自该单元的气体在涡轮机（10,20,30,40 ，150）或能够产生驱动压缩机（14,24,34,44,154°）的机械能的另一装置。另一个涡轮机或装置可以膨胀来自该装置的另一种气体或相同的气体，以便驱动 另一台压缩机。

公开(公告)号：US06205813B1

公开(公告)日：2001-03-27

申请号：US09345422

申请日：1999-07-01

申请人： Minish Mahendra Shah ,  James Joseph Maloney ,  Raymond Francis Drnevich

发明人： Minish Mahendra Shah ,  James Joseph Maloney ,  Raymond Francis Drnevich

IPC分类号： F25J300

CPC分类号： F25J3/0238 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0257 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/50 ,  F25J2200/70 ,  F25J2200/72 ,  F25J2205/60 ,  F25J2205/80 ,  F25J2215/60 ,  F25J2220/66 ,  F25J2235/60 ,  F25J2245/02 ,  F25J2260/42 ,  Y02C10/12

摘要： A natural gas purification system which can produce both fuel and high purity hydrocarbon product such as high purity methane or high purity natural gas wherein high temperature carbon dioxide removal is followed by cryogenic rectification to produce fuel and high purity hydrocarbon product.

摘要翻译： 一种天然气净化系统，可以生产出高纯度甲烷或高纯度天然气的燃料和高纯度烃产品，其中高温二氧化碳的除去之后进行低温精馏以产生燃料和高纯度烃产品。

公开(公告)号：US5410869A

公开(公告)日：1995-05-02

申请号：US182346

申请日：1994-01-18

申请人： Peter Muller

发明人： Peter Muller

IPC分类号： F01K23/06 ,  F02C3/20 ,  F02C3/28 ,  F02C3/30 ,  F25J3/04

CPC分类号： F01K23/068 ,  F02C3/20 ,  F02C3/28 ,  F02C3/30 ,  F25J3/04545 ,  F25J3/04563 ,  F25J3/04575 ,  F25J3/04581 ,  F25J3/04593 ,  F25J3/04612 ,  F25J3/04618 ,  F25J2240/82 ,  F25J2245/42 ,  F25J2260/42 ,  Y02E20/16 ,  Y02E20/18

摘要： In a method for operating a combined cycle power plant with coal or oil gasification, wherein the oxygen required for gasification is supplied by an air separation plant, the air required for the air separation plant is condensed in a first, separate condenser and is cooled in a heat exchanger prior to being supplied to the air separation plant. Only enough nitrogen produced in the separation plant is supplied to the gas turbine combustion chamber as the surge limit of the compressor permits. The remaining portion of the nitrogen is expanded to ambient pressure in an expander after exiting the air separation plant.

摘要翻译： 在用于操作具有煤或油气化的联合循环发电厂的方法中，其中气化所需的氧气由空气分离设备供应，空气分离设备所需的空气在第一个分开的冷凝器中冷凝并冷却 在供应到空气分离设备之前的热交换器。 随着压缩机的浪涌极限允许，在分离设备中产生的足够的氮气被供应到燃气轮机燃烧室。 在离开空气分离设备之后，其余部分的氮气在膨胀器中膨胀至环境压力。