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    • 94. 发明公开
    • 공기 분리 공정에서의 LNG 기반의 액화 장치의생산능력을 높이기 위한 시스템
    • 在空气分离过程中提高LNG基液化气的能力的系统
    • KR1020080002673A
    • 2008-01-04
    • KR1020070065173
    • 2007-06-29
    • 에어 프로덕츠 앤드 케미칼스, 인코오포레이티드
    • 디더글라스폴최정수헤론돈마이클
    • F25J3/00
    • F25J1/0264F25J1/0015F25J1/004F25J1/0224F25J1/0234F25J1/0245F25J1/0292F25J3/0406F25J3/04224F25J3/04266F25J3/04272F25J3/04351F25J3/04412F25J3/04678F25J3/04812F25J3/04969F25J2210/02F25J2210/62F25J2230/08F25J2230/42F25J2245/42
    • A process for cryogenic separation of feed air by increasing the capacity of an LNG-based liquefier is provided to perform essential cooling of a product with an increased productivity when at least a part of the product is required to be present in a liquid state, while not increasing the dimension of the liquefier. A process for cryogenic separation of feed air comprises that: (a) the feed air(100) is compressed and impurities are removed from the air, and then the air is supplied to a cryogenic air separation unit(1) including a main heat exchanger and a distillation column system; (b) the feed air is cooled in the main heat exchanger(110); (c) the cooled air(112) is separated in the distillation column system into a nitrogen-enriched stream and oxygen-enriched stream; (d) the distillation column system includes a high-pressure column and a low-pressure column; (e) the feed air is separated in the high-pressure column into a high-pressure nitrogen stream(174) and a crude liquid oxygen stream(158) supplied to the low-pressure column; (f) the low-pressure column separates the crude liquid oxygen stream into an oxygen product stream and a low-pressure nitrogen stream(180); (g) the high-pressure column and the low-pressure column are thermally linked to each other, at least a part of the high-pressure nitrogen is collected at the bottom(sump) of the low-pressure column and condensed in a reboiler/condenser by a boiling oxygen-enriched liquid used as reflux to the distillation column system; and (h) when at least a part of the product is required to be present in a liquid state, a coolant is discharged from liquefied natural gas by feeding nitrogen from the distillation from a liquefier unit for providing essential cooling and nitrogen is compressed through multiple steps by using at least one preliminary compressor and is liquefied via indirect heat exchange with the liquefied natural gas. To increase the capacity of an LNG-based liquefier(2) including a supplementary compressor distinguished from the preliminary compressor, (i) in a low-capacity mode, the nitrogen supplied to the liquefier comprises at least a part of the high-pressure nitrogen, and (ii) in a high-capacity mode, the pressure of at least a part of the low-pressure nitrogen is increased to the pressure of the high-pressure nitrogen to produce pressurized nitrogen as a feeding material for the LNG-based liquefier.
    • 提供通过增加基于LNG的液化器的容量来进一步分离进料空气的方法,以在产品的至少一部分需要以液体状态存在时,以提高生产率进行必要的冷却,同时 不增加液化器的尺寸。 用于进料空气的低温分离的方法包括:(a)进料空气(100)被压缩并从空气中除去杂质,然后将空气供应到包括主热交换器的低温空气分离单元(1) 和蒸馏塔系统; (b)进料空气在主热交换器(110)中冷却; (c)将冷却的空气(112)在蒸馏塔系统中分离成富氮料流和富氧料流; (d)蒸馏塔系统包括高压塔和低压塔; (e)将进料空气在高压塔中分离成高压氮气流(174)和提供给低压塔的粗液氧气流(158); (f)低压塔将粗液氧流分离成氧产物流和低压氮气流(180); (g)高压塔和低压塔彼此热连接,至少部分高压氮在低压塔的底部(集水槽)收集并在再沸器中冷凝 通过用作回流到蒸馏塔系统的沸腾富氧液体的冷凝器; 和(h)当产品的至少一部分需要以液体状态存在时,通过从用于提供基本冷却的液化器单元的蒸馏中输入氮气,从液化天然气排出冷却剂,并且通过多个压缩将氮气压缩 通过使用至少一个初步压缩机的步骤,并通过与液化天然气的间接热交换液化。 为了增加包括与初步压缩机不同的辅助压缩机的基于液化天然气的液化器(2)的容量,(i)在低容量模式下,供应到液化器的氮包括至少一部分高压氮 ,和(ii)在高容量模式下,至少一部分低压氮的压力升高到高压氮的压力,以产生加压氮作为用于LNG基液化器的供料 。
    • 96. 发明申请
    • METHOD AND DEVICE FOR PRODUCING COMPRESSED NITROGEN
    • 方法和装置产生压力氮
    • WO2015014485A3
    • 2015-09-24
    • PCT/EP2014002074
    • 2014-07-29
    • LINDE AG
    • ALEKSEEV ALEXANDERGOLOUBEV DIMITRIECKERT THOMAS
    • F25J3/04
    • F25J3/04424F25J3/04018F25J3/04024F25J3/04048F25J3/04054F25J3/0406F25J3/04084F25J3/04115F25J3/04121F25J3/04127F25J3/04145F25J3/04175F25J3/04296F25J3/04303F25J3/04339F25J3/04351F25J3/04387F25J3/04393F25J3/04412F25J3/04569F25J3/04781F25J3/04787F25J3/04872F25J3/04878F25J2200/52F25J2200/54F25J2205/04F25J2230/40F25J2235/52F25J2240/04F25J2240/10F25J2245/02F25J2245/40F25J2270/02
    • The invention relates to a method and to a device that serve for producing compressed nitrogen by low-temperature decomposition of air in a distillation column system which has a high-pressure column (202), a low-pressure column (203), a high-pressure column head condenser (204) and a low-pressure column head condenser (205). A main air compressor (9) constitutes the only gas compressor powered by external energy. In the main air compressor (9) the feed air is compressed to a total air pressure which is at least 5 bars above the operating pressure of the high-pressure column (202). A first part-stream (56) of the high-pressure total air stream (11, 811) from the main air compressor (9) is expanded to perform work as operating pressure of the high-pressure column or a higher pressure (57) and is introduced into the distillation column system (201). A second part-stream (52, 55) of the high-pressure total air stream (11, 811) is cooled in a main heat exchanger (51) and is introduced at least partially in liquid form into the distillation column system (206, 210). An internally compressed nitrogen stream is formed by a part-stream (319) of the liquid nitrogen stream (215) from the high-pressure column head condenser (204) and/or a part-stream (234, 334) of the liquid nitrogen stream (232) from the low-pressure column head condenser (205); the internally compressed nitrogen stream is brought in the liquid state to a product pressure (235, 335a, 335b) which is between 15 and 100 bars; then the internally compressed nitrogen stream is heated in the main heat exchanger (51) and then extracted as a gaseous compressed nitrogen product (60) below the product pressure.
    • 该方法和设备服务用于通过空气的低温分馏在蒸馏塔系统中产生加压氮气,具有高压塔(202)和一个低压塔(203)和一个高压塔顶部冷凝器(204)和一个低压塔顶部冷凝器(205)。 主空气压缩机(9)表示仅由外部能量气体压缩机驱动; 在进料空气被压缩至总气压为至少5巴的高压塔(202)的操作压力以上。 高压的第一部分流(56)从主空气压缩机(9)的总空气流(11,811)是高压塔的工作操作压力或更高的压力被释放(57)和导入到蒸馏塔系统(201)。 高压的总的空气流(11,811)的第二个部分流(52,55)在引入到蒸馏塔系统(206,210)的主热交换器(51)和至少部分液体被冷却。 内部压缩的氮气流被从高压塔顶部冷凝器(204)和/或从低压塔顶部冷凝器(205)的液体氮流(232)的部分流(234,334)的液体氮流(215)的部分流(319)而形成; 它被带入液体状态向产品压力(235,335A,335B),其位于15和100巴之间; 然后将其在主热交换器(51)加热,然后作为气态加压氮产品流(60)的产物在压力下排出。
    • 98. 发明申请
    • METHOD AND APPARATUS FOR PRODUCING OXYGEN BY SEPARATING AIR BY CRYOGENIC DISTILLATION
    • 通过低温蒸馏分离空气生产氧气的方法和装置
    • WO2009136075A3
    • 2010-10-07
    • PCT/FR2009050617
    • 2009-04-08
    • AIR LIQUIDEDAVIDIAN BENOIT
    • DAVIDIAN BENOIT
    • F25J3/04
    • F25J3/04181F25J3/0406F25J3/0409F25J3/04103F25J3/04187F25J3/04206F25J3/04303F25J3/04309F25J3/04351F25J3/04393F25J3/04418F25J2200/34F25J2200/54F25J2250/40F25J2250/42F25J2250/50
    • In a method for separating air by cryogenic distillation in an installation comprising a double column comprising a medium-pressure column (15) and a low-pressure column (17), the low-pressure column containing a bottom vaporizer (19), an intermediate vaporizer (21) and a top vaporizer (23), compressed air is purified in a purification unit, cooled in an exchange line and sent to the medium-pressure column of the double column, an oxygen-rich fluid is tapped from the low-pressure column, heated and sent to the client, nitrogen tapped from the medium-pressure column is split into at least three parts, a first part of the nitrogen is expanded in a first turbine (47), a second part of the nitrogen is compressed in a cold compressor (51) and sent to the bottom vaporizer, the nitrogen thus condensed being sent to at least one column of the double column, and a third part of the nitrogen is sent to the top vaporizer, without a pressure modifying step downstream of the column from which it is tapped and upstream of the top vaporizer, the nitrogen thus condensed being sent to at least one column of the double column, and a stream of gas is sent to the intermediate vaporizer, this stream consisting of compressed, purified and cooled air.
    • 在包括由中压塔(15)和低压塔(17)组成的双塔的装置中通过低温蒸馏分离空气的方法中,所述低压塔含有底部蒸发器(19),中间体 蒸发器(21)和顶部蒸发器(23),在净化单元中净化压缩空气,在交换管线中冷却并送入双塔的中压塔,从低压塔中抽取富氧流体, 压力塔,加热送到客户端,从中压塔抽出的氮气被分成至少三个部分,第一部分氮气在第一涡轮机(47)中膨胀,氮气的第二部分被压缩 在冷压缩机(51)中并送到底部蒸发器,将如此冷凝的氮气送至双塔的至少一列,并将第三部分的氮气送入顶部蒸发器,而不需要在下游进行压力修正步骤 的列 敲打并顶部蒸发器的上游,由此冷凝的氮气被送到双塔的至少一列,并且将气流送到中间蒸发器,该流由压缩的,纯化的和冷却的空气组成。
    • 99. 发明申请
    • METHOD AND APPARATUS FOR AIR SEPARATION BY CRYOGENIC DISTILLATION
    • 通过低温蒸馏进行空气分离的方法和装置
    • WO2009130430A3
    • 2010-01-07
    • PCT/FR2009050495
    • 2009-03-23
    • AIR LIQUIDEDAVIDIAN BENOIT
    • DAVIDIAN BENOIT
    • F25J3/04
    • F25J3/04212F25J3/04048F25J3/04054F25J3/0406F25J3/04303F25J3/04309F25J3/04351F25J3/04393F25J3/04448F25J2200/34F25J2200/50F25J2200/54
    • In a method for air separation by cryogenic distillation in a three-column system, formed of a medium pressure column (9), an intermediate pressure column (25), and a low pressure column (19, 39) having at least a first and second vaporizer (52, 50), compressed air is sent, purified and cooled, into an exchange line (3) to the medium pressure column; flows enriched with nitrogen and oxygen derived from the medium pressure column are sent to the low pressure column; an oxygen-enriched liquid flow is sent from the medium pressure column to the intermediate pressure column; a first gas containing at least as much nitrogen as the air in the first vaporizer is sent into the low pressure column vat (52); a second gas containing at least as much nitrogen as the air in the second vaporizer (50) is sent to an intermediate level of the low pressure column; an oxygen-rich liquid is sent from the low pressure column vat to a head condenser (31, 59) of the intermediate pressure column or low pressure column; oxygen- and nitrogen-enriched liquids are sent from the intermediate pressure column to the low pressure column; an oxygen-rich gas is collected in the head condenser (31, 59) of the intermediate pressure column or low pressure column; and a nitrogen-rich gas is extracted from the head of the low pressure column.
    • 在三柱系统中通过低温蒸馏进行空气分离的方法,由中压塔(9),中间压力塔(25)和低压塔(19,39)形成,所述低压塔至少具有第一和第二塔 第二蒸发器(52,50),将压缩空气送入,纯化并冷却至与中压塔相交换的交换管线(3) 将来自中压塔的氮和氧富集的流送入低压塔; 将富氧液体流从中压塔送到中压塔; 含有至少与第一蒸发器中的空气相同的氮的第一气体被送入低压塔槽(52)中; 含有至少与第二蒸发器(50)中的空气相同的氮的第二气体被送到低压塔的中间水平; 将富氧液体从低压塔槽输送到中压塔或低压塔的头冷凝器(31,59); 氧和富氮液体从中压塔送到低压塔; 在中压塔或低压塔的头冷凝器(31,59)中收集富氧气体; 并且从低压塔的头部提取富氮气体。
    • 100. 发明申请
    • METHOD AND APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION
    • 通过低温蒸馏分离空气的方法和装置
    • WO2009136075A2
    • 2009-11-12
    • PCT/FR2009050617
    • 2009-04-08
    • AIR LIQUIDEDAVIDIAN BENOIT
    • DAVIDIAN BENOIT
    • F25J3/04
    • F25J3/04181F25J3/0406F25J3/0409F25J3/04103F25J3/04187F25J3/04206F25J3/04303F25J3/04309F25J3/04351F25J3/04393F25J3/04418F25J2200/34F25J2200/54F25J2250/40F25J2250/42F25J2250/50
    • In a method for separating air by cryogenic distillation in an installation comprising a double column comprising a medium-pressure column (15) and a low-pressure column (17), the low-pressure column containing a bottom vaporizer (19), an intermediate vaporizer (21) and a top vaporizer (23), compressed air is purified in a purification unit, cooled in an exchange line and sent to the medium-pressure column of the double column, an oxygen-rich fluid is tapped from the low-pressure column, heated and sent to the client, nitrogen tapped from the medium-pressure column is split into at least three parts, a first part of the nitrogen is expanded in a first turbine (47), a second part of the nitrogen is compressed in a cold compressor (51) and sent to the bottom vaporizer, the nitrogen thus condensed being sent to at least one column of the double column, and a third part of the nitrogen is sent to the top vaporizer, without a pressure modifying step downstream of the column from which it is tapped and upstream of the top vaporizer, the nitrogen thus condensed being sent to at least one column of the double column, and a stream of gas is sent to the intermediate vaporizer, this stream consisting of compressed, purified and cooled air.
    • 在包括由中压塔(15)和低压塔(17)组成的双塔的装置中通过低温蒸馏分离空气的方法中,所述低压塔含有底部蒸发器(19),中间体 蒸发器(21)和顶部蒸发器(23),在净化单元中净化压缩空气,在交换管线中冷却并送入双塔的中压塔,从低压塔中抽取富氧流体, 压力塔,加热送到客户端,从中压塔抽出的氮气被分成至少三个部分,第一部分氮气在第一涡轮机(47)中膨胀,氮气的第二部分被压缩 在冷压缩机(51)中并送到底部蒸发器,将如此冷凝的氮气送至双塔的至少一列,并将第三部分的氮气送入顶部蒸发器,而不需要在下游进行压力修正步骤 的列 敲打并顶部蒸发器的上游,由此冷凝的氮气被送到双塔的至少一列,并且将气流送到中间蒸发器,该流由压缩的,纯化的和冷却的空气组成。