知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

113 条记录 (耗时 0.014 秒)

    Ultra-high purity nitrogen and oxygen generator
    53.
    发明授权
    Ultra-high purity nitrogen and oxygen generator 失效
    超高纯度氮气和氧气发生器

    公开(公告)号：US5363656A

    公开(公告)日：1994-11-15

    申请号：US157035

    申请日：1993-12-02

    申请人： Takashi Nagamura ,  Takao Yamamoto

    发明人： Takashi Nagamura ,  Takao Yamamoto

    IPC分类号： F25J3/04 ,  F25J3/02

    CPC分类号： F25J3/04854 ,  F25J3/04218 ,  F25J3/04284 ,  F25J3/0429 ,  F25J3/0443 ,  F25J3/0486 ,  F25J2200/34 ,  F25J2200/50 ,  F25J2200/52 ,  F25J2200/90 ,  F25J2215/44 ,  F25J2215/56 ,  F25J2245/40 ,  F25J2250/40 ,  F25J2250/50

    摘要： A generator produces ultra-high purity nitrogen and ultra-high purity oxygen simultaneously by the liquefaction and rectification of feed air. Feed air is rectified in a first rectification column, and nitrogen gas separated to the top of that column is liquefied, in a nitrogen condenser, by oxygen-enriched liquid air separated to the bottom portion of the first rectification column. The oxygen-enriched liquid is fed to the upper portion of a second rectification column having a reboiler at its bottom, so that through rectification oxygen gas is fed from above a liquid reservoir to the lower portion of a third rectification column. Through rectification of the oxygen gas in the third rectification column, high purity oxygen gas, from which impurities having boiling points higher than that of oxygen have been removed by liquefaction, is fed to the center portion of a fourth rectification column which has a condenser in its top portion and a reboiler in its bottom portion. Through rectification of the high purity oxygen gas in the fourth rectification column, impurities having boiling points lower than that of oxygen are exhausted from the top portion thereof as non-condensed gas and ultra-high purity liquid oxygen is separated to the bottom thereof.

    摘要翻译： 发电机通过进料空气的液化和整流同时产生超高纯氮和超高纯氧。 进料空气在第一精馏塔中精馏，并且在氮气冷凝器中分离到该塔顶部的氮气被分离到第一精馏塔底部的富氧液体空气液化。 富氧液体在其底部被供给到具有再沸器的第二精馏塔的上部，从而通过精馏将氧气从液体储存器上方供给到第三精馏塔的下部。 通过第三精馏塔中的氧气的精馏，通过液化除去沸点高于氧气的杂质的高纯度氧气被送入具有冷凝器的第四精馏塔的中心部分 其顶部和在其底部的再沸器。 通过对第四精馏塔中的高纯度氧气进行精馏，将沸点低于氧气的杂质从其顶部排出为非冷凝气体，超高纯度液氧分离到其底部。

    Cryogenic liquid sampling system
    54.
    发明授权
    Cryogenic liquid sampling system 失效
    低温液体取样系统

    公开(公告)号：US5161381A

    公开(公告)日：1992-11-10

    申请号：US672688

    申请日：1991-03-20

    申请人： Richard A. Victor ,  James D. Augustyniak

    发明人： Richard A. Victor ,  James D. Augustyniak

    IPC分类号： G01N1/00 ,  G01N1/24

    CPC分类号： G01N1/22 ,  F25J3/0486 ,  F25J2280/02 ,  G01N1/42 ,  G01N2001/2238 ,  G01N2001/244

    摘要： A sampling system for cryogenic liquid sampling which passes vaporized cryogenic fluid to an analyzer through a conduit having a defined restriction such as an orifice at or downstream of the input and which prevents choke flow in the conduit by simultaneously reducing the pressure which promotes choke flow and improving the ratio of the fluid pressure at and downstream of the restriction in the direction which resists choke flow.

    摘要翻译： 一种用于低温液体采样的采样系统，其通过具有限定的限制的导管将蒸发的低温流体传送到分析器，例如在输入端或输入端下游的孔口，并且通过同时降低促进扼流流动的压力来防止管道中的扼流流动， 改善阻力流动阻力方向上下游流体压力的比例。

    Air separation process for the production of oxygen-rich and nitrogen-rich products
    55.
    发明授权
    Air separation process for the production of oxygen-rich and nitrogen-rich products 失效
    空气分离过程生产富氧和富氮产品

    公开(公告)号：US4936099A

    公开(公告)日：1990-06-26

    申请号：US354173

    申请日：1989-05-19

    申请人： Donald W. Woodward ,  Rakesh Agrawal

    发明人： Donald W. Woodward ,  Rakesh Agrawal

    IPC分类号： F25J3/04

    CPC分类号： F25J3/04103 ,  F25J3/0409 ,  F25J3/04206 ,  F25J3/04284 ,  F25J3/04418 ,  F25J3/0486 ,  F25J2200/54 ,  F25J2205/02 ,  F25J2235/52 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/50 ,  F25J2250/52

    摘要： The present invention is an improvement to a two distillation column, cryogenic air separation process which produces nitrogen-rich and oxygen-rich products. The improvement to the process is condensing at least a portion of the nitrogen overhead from the high pressure column in a reboiler/condenser against a crude liquid oxygen stream and in an intermediate reboiler/condenser located in the low pressure column against internal low pressure column streams. The condensed nitrogen overhead is fed either to the low pressure or high pressure columns as reflux. The vaporized portion of the crude liquid oxygen stream is work expanded to provide some or all of the refrigeration required for the process.

    摘要翻译： 本发明是对两个蒸馏塔，低温空气分离方法的改进，其产生富氮和富氧产物。 该方法的改进是将再沸器/冷凝器中的来自高压塔的氮塔顶馏出物的至少一部分与粗液氧流和位于低压塔中的中间再沸器/冷凝器相对于内部低压塔流 。 冷凝的氮气塔顶作为回流进料到低压塔或高压塔。 粗液氧气流的蒸发部分工作膨胀以提供该方法所需的部分或全部制冷。

    Production of liquid oxygen and/or liquid nitrogen
    56.
    发明授权
    Production of liquid oxygen and/or liquid nitrogen 失效
    生产液氧和/或液氮

    公开(公告)号：US4152130A

    公开(公告)日：1979-05-01

    申请号：US887101

    申请日：1978-03-16

    申请人： Alan Theobald

    发明人： Alan Theobald

    IPC分类号： F25J3/04

    CPC分类号： F25J3/04412 ,  F25J3/04157 ,  F25J3/04181 ,  F25J3/04296 ,  F25J3/04345 ,  F25J3/04393 ,  F25J3/04854 ,  F25J3/0486 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2205/60 ,  F25J2205/68 ,  F25J2205/70 ,  F25J2210/06 ,  F25J2215/44 ,  F25J2245/50 ,  F25J2270/90 ,  Y10S62/94

    摘要： Liquid oxygen and/or liquid nitrogen are made by removing carbon dioxide and water vapor from air, compressing the purified air in a re-cycle compressor and dividing the purified compressed air into first and second streams. Part of the first stream is expanded in a first expander and the refrigeration produced is used to cool both the first and second streams in a first heat exchanger. On leaving the first heat exchanger, the second stream is expanded in a second expander and the refrigeration produced is used to liquify at least part of the remainder of the first stream. The liquid stream is expanded and introduced into a fractionation column from which liquid nitrogen and/or liquid oxygen can be withdrawn. Expanded air from the first and second expanders is returned to the re-cycle compressor although part of the expanded air from the second expander is preferably introduced into the fractionation column. The invention is particularly suited to installations producing in excess of 100 tons of liquid per day and, at this size, preferred designs offer an estimated 51/2 to 9% power savings over the known prior art.

    摘要翻译： 通过从空气中除去二氧化碳和水蒸汽来制造液氧和/或液氮，在再循环压缩机中压缩净化空气并将净化的压缩空气分成第一和第二流。 第一流的一部分在第一膨胀机中膨胀，并且所生产的制冷用于在第一热交换器中冷却第一和第二流。 在离开第一热交换器时，第二流在第二膨胀器中膨胀，并且所生产的制冷用于液化第一流的剩余部分的至少一部分。 将液体物流膨胀并引入分馏塔，可以从中分出液氮和/或液氧。 来自第一和第二膨胀机的膨胀空气返回到再循环压缩机，尽管来自第二膨胀机的膨胀空气的一部分优选地被引入分馏塔。 本发明特别适合于每天生产超过100吨液体的装置，并且在这种尺寸下，优选的设计比已知的现有技术节省了大约51/2至9％的功率节省。

    The production of oxygen
    57.
    发明授权
    The production of oxygen 失效
    氧气的生产

    公开(公告)号：US3754406A

    公开(公告)日：1973-08-28

    申请号：US3754406D

    申请日：1971-03-15

    申请人： AIR PROD & CHEM

    发明人： ALLAM R

    IPC分类号： F25J3/04 ,  F25J3/02

    CPC分类号： F25J3/0486 ,  F25J3/0409 ,  F25J3/04206 ,  F25J3/04218 ,  F25J3/04303 ,  F25J3/04424 ,  F25J3/04884 ,  F25J2205/02 ,  F25J2205/24 ,  F25J2205/60 ,  F25J2235/02 ,  F25J2235/50 ,  F25J2245/40 ,  F25J2245/50 ,  F25J2250/02 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/50

    摘要： A plant for the production of low purity oxygen, in which a low pressure stream of incoming air is cooled against outgoing gas streams and fed into a high pressure fractionating column, and a high pressure stream of incoming air is cooled against outgoing gas streams, partially condensed against boiling liquid oxygen product in a product vaporizer, and separated into gas and liquid streams, the liquid stream being sub-cooled and expanded into a low pressure fractionating column while a major part of the gas stream is re-heated and expanded to provide plant refrigeration. Crude liquid oxygen from the bottom of the high pressure column is cooled against waste outgoing nitrogen from the low pressure column and then admitted to the low pressure column after first being used to liquefy some of the nitrogen from the high pressure column in an external reboiler/condenser. Liquid oxygen product from the low pressure column is pumped to a higher pressure before being passed through the sub-cooler and the product vaporizer. The remainder of the high pressure column nitrogen is liquefied in a second external reboiler/condenser by the separated high pressure liquid feed on its way to the low pressure column. The liquefied high pressure column nitrogen is used as reflux for the two columns, that for the low pressure column being cooled against outgoing waste nitrogen. The expander exhaust is likewise cooled against outgoing waste nitrogen before admission to the low pressure column.

    摘要翻译： 用于生产低纯度氧气的设备，其中进入空气的低压流被冷却以抵抗输出的气流并进料到高压分馏塔中，并且高压的进入空气流被冷却以抵抗输出的气流，部分 在产品蒸发器中与沸腾的液氧产物冷凝并分离成气体和液体流，将液体流冷却并膨胀成低压分馏塔，同时将大部分气流重新加热和膨胀以提供 植物制冷。 来自高压塔底部的粗液态氧气从低压塔中排出的氮气被冷却，然后在首先用于液化来自外部再沸器/高压塔中的高压塔中的一些氮气之后进入低压塔， 冷凝器 来自低压塔的液氧产物在通过副冷却器和产品蒸发器之前被泵送到更高的压力。 剩余的高压塔氮通过分离的高压液体进料在通向低压塔的途中在第二外部再沸器/冷凝器中液化。 液化高压塔氮用作两塔的回流，低压塔被冷却出来的废氮。 在进入低压塔之前，膨胀器排气同样被排出废氮排出。