CN101360964B - 具有延长盖帽过滤器的低温处理系统 - Google Patents

具有延长盖帽过滤器的低温处理系统 Download PDF

Info

Publication number
CN101360964B
CN101360964B CN2006800512268A CN200680051226A CN101360964B CN 101360964 B CN101360964 B CN 101360964B CN 2006800512268 A CN2006800512268 A CN 2006800512268A CN 200680051226 A CN200680051226 A CN 200680051226A CN 101360964 B CN101360964 B CN 101360964B
Authority
CN
China
Prior art keywords
filter
treatment facility
process system
cryogenic process
cryogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2006800512268A
Other languages
English (en)
Other versions
CN101360964A (zh
Inventor
D·H·迈
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Praxair Technology Inc
Original Assignee
Praxair Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Praxair Technology Inc filed Critical Praxair Technology Inc
Publication of CN101360964A publication Critical patent/CN101360964A/zh
Application granted granted Critical
Publication of CN101360964B publication Critical patent/CN101360964B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/005—Adaptations for refrigeration plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/04309—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of nitrogen
    • F25J3/04315—Lowest pressure or impure nitrogen, so-called waste nitrogen expansion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • F25J3/04387—Details relating to the work expansion, e.g. process parameter etc. using liquid or hydraulic turbine expansion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04436—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using at least a triple pressure main column system
    • F25J3/04448—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using at least a triple pressure main column system in a double column flowsheet with an intermediate pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04945—Details of internal structure; insulation and housing of the cold box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/20—Processes or apparatus using separation by rectification in an elevated pressure multiple column system wherein the lowest pressure column is at a pressure well above the minimum pressure needed to overcome pressure drop to reject the products to atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/52—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the high pressure column of a double pressure main column system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/54—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the low pressure column of a double pressure main column system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/84—Processes or apparatus using other separation and/or other processing means using filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/02—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream
    • F25J2240/10—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream the fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/30—Dynamic liquid or hydraulic expansion with extraction of work, e.g. single phase or two-phase turbine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/902—Apparatus
    • Y10S62/908—Filter or absorber

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

一种低温处理系统，其中固体去除过滤器(210)定位在处理设备的上游的导管内。导管位于隔离壳体内，并且过滤器(216)位于过滤器壳体(211)内，壳体具有通过进出法兰(214)密封的盖帽(212)。盖帽延伸到隔离壳体外侧，使得进出法兰暴露于环境空气。

Description

具有延长盖帽过滤器的低温处理系统
技术领域
本发明总体涉及例如低温空气分离系统的低温处理系统，并且更特别是涉及在这种低温处理系统内低温流体的处理。
背景技术
在低温处理系统中，可以是液体、气体或气体和液体的混合相形式的低温流体输送经过来往于处理设备的导管装置。由于低温处理系统操作的冷温度，在233K以下并且会在150K以下或更低，其中流过低温流体的导管位于隔离壳体内。颗粒或其它固体物质会在它经过导管时存在于低温流体内，并且由于偶然性，过滤器可在容易堵塞的处理设备的上游的导管上使用。长时间后，这种过滤器需要清洁或更换，需要进入隔离壳体，这是成本高的，并且还是危险的。
发明内容
低温处理系统包括处理设备和将低温流体输送到处理设备的导管装置，所述导管装置在隔离壳体内；定位在处理设备上游的导管装置上的过滤器，所述过滤器位于具有通过进出法兰密封的盖帽的过滤器壳体内；所述盖帽具有延伸到隔离壳体外部的长度，使得进出法兰暴露于环境空气。
如这里使用那样，术语“盖帽”指的是过滤器壳体的上部。
如这里使用那样，术语“塔”指的是蒸馏或分馏塔或区域，即接触塔或区域，其中例如通过蒸气和液体相在安装在塔内的一系列垂直隔开的塔盘或板和/或例如结构化或随机填充物的填充元件上接触，液体和蒸气相逆流接触以便实现流体混合物分离。为了进一步描述蒸馏塔，见由McGraw-Hill Book Company(New York，Section 13)的R.H.Perry和C.H.Chilton编辑的化工手册(第5版)中的TheContinuous Distiallation Process。双塔包括较高压力塔，具有与较低压力塔的下端形成热交换关系的上端。
蒸气和液体接触分离过程取决于各组分蒸气压力的差别。较高蒸气压力(或者更容易挥发或低沸腾)组分将趋于在气相浓缩，而较低蒸气压力(或者不容易挥发或高沸腾)组分将趋于在液相浓缩。局部凝结是分离过程，由此蒸气混合物的冷却可用来浓缩蒸气相的挥发组分，以及浓缩液相的不太挥发组分。精馏或连续蒸馏是将通过蒸气相和液相的逆流处理而获得的连续局部蒸发和凝聚相结合的分离过程。蒸气和液相的逆流接触通常是绝热的，并且可包括相之间的积分(阶段化)或差分(连续)接触。采用精馏原理来分离混合物的分离工艺设备通常互换地称为精馏塔、蒸馏塔或分馏塔。低温精馏是至少部分在150开氏度(K)或以下进行的精馏过程。
如这里使用那样，术语“间接热交换”指的是使得两种流体进行热交换而没有流体的任何实际接触或者相互混合。
如这里使用那样，术语“供应空气”指的是主要包括氧和氮的混合物，例如环境空气。
如这里使用那样，术语塔的“上部”和“下部”指的是分别在塔的中点之上和之下的塔的部分。
如这里使用那样，术语“涡轮膨胀”和“涡轮膨胀器”分别指的是用于高压流体射流过涡轮以便减小流体的压力和温度由此形成制冷的方法和设备。
如这里使用那样，术语“低温空气分离设备”指的是其中供应空气通过低温精馏分离以便形成氮、氧和/或氩的一个或多个塔以及互连的管道、阀、热交换器和类似物。
如这里使用那样，术语“压缩机”指的是通过作功来增加气体压力的机器。
如这里使用那样，术语“过滤器”指的是截留流体射流中的固体和/或冻结材料的装置。
如这里使用那样，术语“低温泵”指的是用于在低温下增加流体射流的压头的装置。
附图说明
图1是可以得益于本发明的使用的一种低温处理系统的示意图，此实例是低温空气分离系统；
图2是可用于本发明实践的过滤器系统的一个实施例的简化截面视图；
图3是从隔离壳体外部观看本发明系统的倾斜盖帽和进出法兰的视图。
对于相同的元件来说，附图中的标号是相同的。
具体实施方式
本发明可用于任何低温处理系统，该系统采用围绕低温流体承载导管的隔离壳体。隔离壳体的实例包括冷箱填充物、隔离罩、导管或滑道。低温处理系统的实例包括低温空气分离设备、HYCO设备、LNG设备和气体处理设备。
本发明的一个特别有用的应用是与低温空气分离处理系统相结合。一个这样的系统在图1中表示，该系统包括低温流体承载导管和通过这种导管将低温流体输送其中的处理设备的许多实例。在参考附图说明本发明的过程中，过滤器定位在低温泵的上游，以便过滤从塔输送到泵的液体氧。定位过滤器的其它位置包括在主要热交换器101、废物涡轮113的上游以及液体涡轮111上游的泵之后。
本发明将参考附图更加详细描述。现在参考图1，在主要空气压缩机中已经压缩的压缩、冷却、预先纯化的供应空气1分成两个射流；射流2进入主要热交换器101的热端，并且射流3进入增压压缩机109。在增压压缩机109中，供应空气的此部分的压力升高到足够高使其凝结而不沸腾氧产品。高压空气射流4经过冷却器110，并且冷却的高压空气射流5进入主要热交换器的热端。中间压力空气6离开热交换器102，冷却到接近露点。冷空气6接着进入与较低压力塔104一起形成双塔的较高压力精馏塔102的底部。高压空气射流5在主要热交换器内液化，而不沸腾高压氧，并且作为过冷液体离开主要热交换器。过冷液体空气射流7经过液体涡轮111膨胀，以便为低温空气分离设备的一部分提供制冷需要。液体空气射流膨胀到塔102的大致操作压力。液体空气射流8分成三个射流；射流9在射流6进入该塔的位置之上的几级处进入塔102，射流10在离开底部几个级处供应到中间压力塔103，并且射流11供应到热交换器108。在热交换器108内，射流11进一步冷却，而不加热氮蒸气，由此过冷液体空气射流27在离开顶部几级处供应到低压塔104。
在塔102内，空气通过低温精馏分成富含氧和富含氮的部分。富含氧的液体12从塔的底部去除，引入热交换器108，被冷却而不加热氮蒸气，作为过冷液体21离开，并且在射流10的供应点之下并在塔的底部之上供应到塔103的中间点。氮蒸气13离开中间压力塔102的顶部。蒸气射流14的一部分作为中间压力氮产品被去除，并且供应到主要热交换器101的冷端。射流14在主要热交换器101内加热，而不冷却空气射流，并且作为加热的中间压力氮射流39离开热端。射流13的其它部分15进入冷凝器/重沸器105的凝结侧。射流15被液化，而不蒸发塔104内的底部液体。离开冷凝器/重沸器105的液体氮16分成两个射流；射流17输送到热交换器108，并且射流18作为回流返回到塔102。蒸气17被过冷，而不加热氮蒸气，并且造成过冷液体氮射流28在顶部或靠近顶部进入低压塔104。富含氮的蒸气射流19至少在塔102的顶部以下一级处去除，并且进入冷凝器/重沸器106的凝结侧。射流19被液化，而不蒸发塔103内的底部液体，并且作为液体射流20返回到塔102。射流20在射流19的回收点处或以上进入塔102。
中间压力塔103用来进一步补充输送到低压塔104的氮回流。氮蒸气23离开中间压力塔103的顶部，并且进入冷凝器/重沸器107的凝结侧。射流23被液化，而不蒸发塔104中间的液体。离开冷凝器/重沸器107的液体氮24分成两个射流；射流25返回到塔103的顶部，并且射流26供应到热交换器108。射流26被过冷，而不加热氮蒸气，并且得到的过冷液体氮射流29在低压塔104顶部处或附近供应。富含氧的液体22从塔103的底部去除，并且在冷凝器/重沸器107之上几级处供应到低压蒸馏塔104的中间点。
低压蒸馏塔104通过低温精馏将供应射流进一步分离成富含氧液体和富含氮蒸气。富含氧的液体射流30从塔104的下部去除，并且经过过滤器210，其中它被去除颗粒物质。得到的富含氧的液体射流60接着输送到低温氧泵112，并且略微升高到最终氧输送压力以上。高压液体射流32供应到主要热交换器101的冷端，其中它被加热并且沸腾，而不凝结高压供应空气射流。被加热、高压氧蒸气产品42离开热交换器101的热端。富含氮的蒸气31离开低压塔104的上部，供应到热交换器108，被加热而不冷却液体，并且作为过热氮蒸气射流33离开。
射流33进入主要热交换器101的冷端，其中它被部分加热，而不冷却空气射流，并且分成两个射流。不需要完成氮产品需要的此射流的一部分从主要热交换器101的中间点去除，并且此射流34被供应到废物涡轮113，并且膨胀到较低压力。和液体涡轮111一起，废物涡轮113用来产生低温空气分离设备的制冷。低压氮射流35离开废物涡轮膨胀器113，供应到主要热交换器101，并且作为被加热、低压废物氮36离开热端，并且供应到氮压缩机114的第一级，并且在这些级的级间冷却器115内冷却。被冷却的压缩氮射流38与同样压力下的氮射流39混合，以便形成射流40。氮射流40被供应到氮压缩机116的其它级，并且在这些级的级间冷却器117内冷却。最后，被冷却的高压氮射流41被输送到终端用户。
图2是过滤器系统210的更加详细的视图。现在参考图2，过滤器210包括位于过滤器壳体211内的过滤器元件216，壳体具有通过进出法兰214密封的盖帽212。过滤器元件216可由任何适当材料制成，例如40×40网格、100×100网格的不锈钢或蒙乃尔合金。盖帽212具有足以延伸到隔离壳体外部的长度。在本发明的延长盖帽过滤器与低温空气分离设备一起使用的情况下，延长的盖帽具有通常在33-58英寸的范围内的长度。
在盖帽212的外侧端处，盖帽通过进出法兰214密封。进出法兰214暴露于环境空气。在过滤器元件216需要维护或更换时，进出法兰214被拆卸以便接近过滤器元件216。这可以在不需要进入隔离壳体的情况下接近过滤器元件216。从成本和操作的角度出发，这还具有多种优点。不需要受限制的空间入口。不需要吹扫气体供应装置与容纳延长的盖帽过滤器210的隔室的脱离和重新连接。此外，同样不再需要容纳延长盖帽过滤器的隔离隔室的隔离和进出盖的拆卸和重新安装。
最好是，盖帽212相对于水平的角度在15-90度的范围内。这形成防止低温流体流出到过滤器的暴露部分上的气体捕集器。经由盖帽的上部泄漏的热量造成过滤器壳体内的液体的一部分蒸发，在进出法兰214和液体表面230之间形成气袋。这防止过滤器的暴露部分内的液体蒸发。
图3是从隔离壳体220外部的视图，表示过滤器210，其中进出法兰214暴露于环境空气，并且倾斜延长的盖帽212延伸到隔离壳体外侧。
虽然参考某些优选实施例并结合特定低温处理系统描述了本发明，本领域普通技术人员将理解到在权利要求的精神和范围内具有本发明的其它实施例以及其它低温处理系统。

Claims (6)

1.一种低温处理系统，包括：隔离壳体；位于所述隔离壳体内的处理设备；位于隔离壳体内的用于将低温流体输送到所述处理设备的导管；以及用于过滤所述导管内输送到所述处理设备的低温流体的过滤器组件，所述过滤器组件具有过滤器壳体，所述过滤器壳体被连接到所述处理设备的导管上游，从而使得低温流体流过所述过滤器壳体，所述过滤器壳体包含有用于过滤通过所述过滤器壳体的低温流体的过滤器元件，一端连接到所述过滤器壳体的盖帽，以及密封所述盖帽另一端从而允许通达所述过滤器的进出法兰；所述过滤器组件被定位成使得所述盖帽穿过所述隔离壳体的一个开口延伸到所述隔离壳体的外侧，所述进出法兰暴露于环境空气，所述过滤器壳体位于所述隔离壳体内，所述过滤器组件不绝热，从而使得从所述隔离壳体外部来自环境空气的热量通过所述盖帽泄漏到所述过滤器壳体，所述盖帽相对于水平的角度在15-90度的范围内，以致上述热量泄漏造成所述过滤器壳体内的液体的一部分蒸发，形成防止低温流体在所述过滤器内蒸发的气体捕集器。
2.如权利要求1所述的低温处理系统，其特征在于，所述处理设备包括低温泵。
3.如权利要求1所述的低温处理系统，其特征在于，包括低温空气分离系统。
4.如权利要求1所述的低温处理系统，其特征在于，所述处理设备包括热交换器。
5.如权利要求1所述的低温处理系统，其特征在于，所述处理设备包括涡轮膨胀器。
6.如权利要求1所述的低温处理系统，其特征在于，所述处理设备包括液体涡轮。
CN2006800512268A 2005-11-16 2006-11-08 具有延长盖帽过滤器的低温处理系统 Expired - Fee Related CN101360964B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/274,334 2005-11-16
US11/274,334 US7472551B2 (en) 2005-11-16 2005-11-16 Cryogenic process system with extended bonnet filter
PCT/US2006/043715 WO2007058914A2 (en) 2005-11-16 2006-11-08 Cryogenic process system with extended bonnet filter

Publications (2)

Publication Number Publication Date
CN101360964A CN101360964A (zh) 2009-02-04
CN101360964B true CN101360964B (zh) 2011-06-08

Family

ID=38016885

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006800512268A Expired - Fee Related CN101360964B (zh) 2005-11-16 2006-11-08 具有延长盖帽过滤器的低温处理系统

Country Status (4)

Country Link
US (1) US7472551B2 (zh)
CN (1) CN101360964B (zh)
BR (1) BRPI0618601B1 (zh)
WO (1) WO2007058914A2 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8161771B2 (en) * 2007-09-20 2012-04-24 Praxair Technology, Inc. Method and apparatus for separating air
FR2968749A1 (fr) * 2010-12-13 2012-06-15 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
JP5878310B2 (ja) * 2011-06-28 2016-03-08 大陽日酸株式会社 空気分離方法及び装置
CN103801128A (zh) * 2014-02-25 2014-05-21 湖北富邦科技股份有限公司 一种复合肥高熔点防结剂的篮式过滤器
US10787303B2 (en) 2016-05-29 2020-09-29 Cellulose Material Solutions, LLC Packaging insulation products and methods of making and using same
US11078007B2 (en) 2016-06-27 2021-08-03 Cellulose Material Solutions, LLC Thermoplastic packaging insulation products and methods of making and using same
WO2018112670A1 (en) * 2016-12-23 2018-06-28 Westport Power Inc. Apparatus and method for filtering cryogenic fluid
CN112066644A (zh) * 2020-09-18 2020-12-11 乔治洛德方法研究和开发液化空气有限公司 一种生产高纯氮和低纯氧的方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5122175A (en) * 1989-06-02 1992-06-16 Hitachi, Ltd. Method of and apparatus for producing superpure nitrogen
EP0730092A1 (de) * 1995-03-03 1996-09-04 Cryopump Ag Pumpe zum Pumpen eines verflüssigtes Gas aufweisenden Fluids und Einrichtung mit einer Pumpe
EP1057977A2 (en) * 1999-06-04 2000-12-06 Cryostar-France SA Cryogenic turbo-expander
FR2860988A1 (fr) * 2003-10-20 2005-04-22 Air Liquide Installation et procede de purification d'un liquide cryogenique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE569932A (zh) 1957-07-31
US3739593A (en) 1968-12-04 1973-06-19 Trane Co Gas separation system
US4170556A (en) * 1973-05-21 1979-10-09 Pall Corporation Filter elements and filter assemblies with thermal seal
US4759848A (en) * 1985-01-23 1988-07-26 Mg Industries Sterilization of cryogenic liquids by ultrafiltration
US5158106A (en) 1991-06-06 1992-10-27 Saes Pure Gas, Inc. Ultra-low heat leak cryogenic valve
FR2706540B1 (fr) 1993-06-11 1995-09-01 Europ Propulsion Pompe liquide cryogénique intégrée amovible et autorefroidie.
FR2774006B1 (fr) * 1998-01-23 2000-02-18 Air Liquide Installation et procede de filtration en phase liquide d'un fluide cryogenique
FR2774754B1 (fr) * 1998-02-09 2000-03-03 Air Liquide Procede de detection de presence d'impuretes, poste et procede de vaporisation de liquide, et double colonne de distillation d'air
FR2782544B1 (fr) 1998-08-19 2005-07-08 Air Liquide Pompe pour un liquide cryogenique ainsi que groupe de pompage et colonne de distillation equipes d'une telle pompe
ATE349647T1 (de) 1999-01-29 2007-01-15 Conocophillips Co Pumpsystem mit bodeneingang und tertiärer eindämmung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5122175A (en) * 1989-06-02 1992-06-16 Hitachi, Ltd. Method of and apparatus for producing superpure nitrogen
EP0730092A1 (de) * 1995-03-03 1996-09-04 Cryopump Ag Pumpe zum Pumpen eines verflüssigtes Gas aufweisenden Fluids und Einrichtung mit einer Pumpe
EP1057977A2 (en) * 1999-06-04 2000-12-06 Cryostar-France SA Cryogenic turbo-expander
FR2860988A1 (fr) * 2003-10-20 2005-04-22 Air Liquide Installation et procede de purification d'un liquide cryogenique

Also Published As

Publication number Publication date
US7472551B2 (en) 2009-01-06
BRPI0618601A2 (pt) 2011-09-06
BRPI0618601B1 (pt) 2018-07-24
CN101360964A (zh) 2009-02-04
US20080110203A1 (en) 2008-05-15
WO2007058914A3 (en) 2007-07-26
WO2007058914A2 (en) 2007-05-24

Similar Documents

Publication Publication Date Title
CN101360964B (zh) 具有延长盖帽过滤器的低温处理系统
JP2989516B2 (ja) 昇圧窒素を製造するための極低温精留方法及びその装置
RU2215952C2 (ru) Способ разделения потока многокомпонентного исходного материала под давлением путем использования дистилляции
OA11268A (en) Improved cascade refrigeration process for liquefaction of natural gas
US20090071191A1 (en) Cryogenic air separation process with excess turbine refrigeration
CA2182126C (en) Cryogenic rectification system with dual phase turboexpansion
KR100395848B1 (ko) 고순도 산소 또는 저순도 산소를 생성하는 저온 정류 장치
KR20000011251A (ko) 산소를제조하기위해공급공기의극저온정류를수행하는방법및장치
CA2388266C (en) System and method for liquefied petroleum gas recovery
CN106595221A (zh) 制氧系统和制氧方法
KR910002050B1 (ko) 가압산소를 제조하기 위한 공기분리공정
KR100208458B1 (ko) 고압산소를 생성시키기 위한 공기 비등 저온 정류시스템
CA2092454C (en) High recovery cryogenic rectification system
EP1999422B1 (en) Cryogenic air separation system
CN1117260C (zh) 空气的分离方法和装置
JP6842334B2 (ja) 空気分離方法、及び空気分離装置
US20060272353A1 (en) Process and apparatus for the separation of air by cryogenic distillation
US7114352B2 (en) Cryogenic air separation system for producing elevated pressure nitrogen
RU2069293C1 (ru) Криогенный способ получения азота из воздуха
US4530708A (en) Air separation method and apparatus therefor
KR100400072B1 (ko) 일체식 생성물 보일러를 갖춘 극저온 정류 장치 및 기체 생성물을 생성하기 위한 극저온 정류 방법
US6351969B1 (en) Cryogenic nitrogen production system using a single brazement
CN1423108A (zh) 通过低温空气分馏来生产高纯度氮的工艺和设备
US6779361B1 (en) Cryogenic air separation system with enhanced liquid capacity
US6601407B1 (en) Cryogenic air separation with two phase feed air turboexpansion

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110608

Termination date: 20191108