CN203744655U - 空分装置氮气扩能改造系统 - Google Patents

空分装置氮气扩能改造系统 Download PDF

Info

Publication number
CN203744655U
CN203744655U CN201420116328.5U CN201420116328U CN203744655U CN 203744655 U CN203744655 U CN 203744655U CN 201420116328 U CN201420116328 U CN 201420116328U CN 203744655 U CN203744655 U CN 203744655U
Authority
CN
China
Prior art keywords
nitrogen
tower
air separation
low pressure
pressure nitrogen
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
CN201420116328.5U
Other languages
English (en)
Inventor
程延峰
李惠英
李英伟
乔丽娟
韩大明
苗建林
孙小会
黄铁檩
刘广州
姚正强
贺丽岩
张占胜
李淮江
张翼
张谦
张冬花
马骏骁
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.)
Henan Gas (group) Co Ltd Yima Gasification Plant
Original Assignee
Henan Gas (group) Co Ltd Yima Gasification Plant
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 Henan Gas (group) Co Ltd Yima Gasification Plant filed Critical Henan Gas (group) Co Ltd Yima Gasification Plant
Priority to CN201420116328.5U priority Critical patent/CN203744655U/zh
Application granted granted Critical
Publication of CN203744655U publication Critical patent/CN203744655U/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F25J3/04406—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 a dual pressure main column system
    • F25J3/04412—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 a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high 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
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/0403—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of nitrogen
    • 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
    • F25J3/04969—Retrofitting or revamping of an existing air fractionation unit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

本实用新型公开了一种空分装置氮气扩能改造系统，包括空分装置主塔（1），主塔（1）顶部设置有辅塔（2），辅塔（2）顶部连接氮气管道（7），氮气管道（7）连接过冷器（3），过冷器（3）连接低压主换热器（4），出低压主换热器（4）的氮气分成两部分，一部分通过低压氮压缩机（5）进入低压氮管网（8）；另一部分通过中压氮压缩机（6）进入中压氮管网（9）。本实用新型通过对空分装置进行改造，提出在主塔上增设辅塔，将96%的污氮气纯化为99%的氮气，提高了能源的综合利用率，降低了能源消耗及生产成本，提高了经济效益。<b/>

Description

空分装置氮气扩能改造系统
技术领域            
本发明属于空分装置氮气扩能改造系统，具体为一种空分装置中增加氮气产能的系统。
背景技术
空气主要是由78.03%的氮气和20.93%的氧气及其它气体混合而成。空气分离就是先使空气冷却到一定的低温，而使其液化成为液态空气。再利用氧和氮两种液体的沸点不同（在大气压力下，氧的沸点为﹣183.98℃，而氮的沸点为﹣195.8℃），在空分装置装有筛板的空分塔内进行分离。随着冶金与三大化工（石化、化肥、煤气化）的快速发展，空分装置的发展规模越来越大。新建空分装置能够满足工厂增加的用气需求，但新建装置投资大，占地多，工期长，因此提供一种空分装置上氮气扩能的可行性改造方案，已经是一个亟需解决的问题。
发明内容                                                            
为了克服上述现有技术中的不足，本发明提供一种简单易实施，并且能够在现有的空分装置基础上对氮气扩能，减少投资和占地，缩短工期的空分装置氮气扩能改造系统。
本实用新型的目的是这样实现的：
空分装置氮气扩能改造系统，包括空分装置主塔1，主塔1顶部设置有辅塔2，辅塔2顶部连接氮气管道7，氮气管道7连接过冷器3，过冷器3连接低压主换热器4，低压主换热器4分别连接低压氮压缩机5和中压氮压缩机6；低压氮压缩机5和中压氮压缩机6分别连接低压氮管网8和中压氮管网9；
所述的低压氮压缩机5和中压氮压缩机6为并联关系。
积极有益效果：本实用新型通过在主塔1顶部增设辅塔2，使得原96%的污氮气纯化为99%的氮气，经过冷器冷，低压主换热器复热后，通过氮气压缩机进入氮气总管。该系统充分利用现有装置、公用工程设施等有利条件，对原有生产装置进行流程优化和技术改造，提高了能源的综合利用率，降低了能源消耗及生产成本，提高了经济效益。
附图说明
图1为本实用新型的结构示意图：
图中为：主塔1、辅塔2、过冷器3、低压主换热器4、低压氮压缩机5、中压氮压缩机6、氮气管道7、低压氮管网8、中压氮管网9。
具体实施方式
结合本发明的附图，对本发明作进一步的说明：
如图1所示，空分装置氮气扩能改造系统，包括空分装置主塔1，主塔1顶部设置有辅塔2，辅塔2顶部连接氮气管道7，氮气管道7连接过冷器3，过冷器3连接低压主换热器4，低压主换热器4分别连接低压氮压缩机5和中压氮压缩机6；低压氮压缩机5和中压氮压缩机6分别连接低压氮管网8和中压氮管网9；从低压主换热器（4）出来的氮气分成两部分，一部分通过低压氮压缩机（5）进入低压氮管网（8），另一部分通过中压氮压缩机（6）进入中压氮管网（9）。
所述的低压氮压缩机5和中压氮压缩机6为并联关系。
本实用新型通过在主塔上方增设辅塔，将96%的污氮气纯化为99%的氮气，压力为15KPa，经过冷器，低压主换热器复热后，一部分通过低压氮压缩机压缩至0.6Mpa进入低压氮管网，为后续工艺提供合格的仪表空气和装置空气，另一部分通过中压氮压缩机压缩至2.8Mpa进入中压氮管网，为合成氨提供原料气。
本实用新型通过在主塔上方增设辅塔，将96%的污氮气纯化为99%的氮气，增加了氮气的产能。该系统充分利用现有装置、公用工程设施等有利条件，对原有生产装置进行流程优化和技术改造，提高了能源的综合利用率，降低了能源消耗及生产成本，提高了经济效益。
以上实施例仅用于说明本实用新型的优选实施方式，但本实用新型并不限于上述实施方式，在所述领域普通技术人员所具备的知识范围内，本实用新型的精神和原则之内所作的任何修改、等同替代和改进等，其均应涵盖在本实用新型请求保护的技术方案范围之内。

Claims (2)

1.空分装置氮气扩能改造系统，包括空分装置主塔（1），其特征在于：主塔（1）顶部设置有辅塔（2），辅塔（2）顶部连接氮气管道（7），氮气管道（7）连接过冷器（3），过冷器（3）连接低压主换热器（4），低压主换热器（4）分别连接低压氮压缩机（5）和中压氮压缩机（6）；低压氮压缩机（5）和中压氮压缩机（6）分别连接低压氮管网（8）和中压氮管网（9）。
2.根据权利要求1所述的空分装置氮气扩能改造系统，其特征在于：所述的低压氮压缩机（5）和中压氮压缩机（6）为并联关系。
 
 
 
CN201420116328.5U 2014-03-15 2014-03-15 空分装置氮气扩能改造系统 Expired - Fee Related CN203744655U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420116328.5U CN203744655U (zh) 2014-03-15 2014-03-15 空分装置氮气扩能改造系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420116328.5U CN203744655U (zh) 2014-03-15 2014-03-15 空分装置氮气扩能改造系统

Publications (1)

Publication Number Publication Date
CN203744655U true CN203744655U (zh) 2014-07-30

Family

ID=51344445

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420116328.5U Expired - Fee Related CN203744655U (zh) 2014-03-15 2014-03-15 空分装置氮气扩能改造系统

Country Status (1)

Country Link
CN (1) CN203744655U (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949708A (zh) * 2016-11-25 2017-07-14 乔治洛德方法研究和开发液化空气有限公司 一种对原有低温空分装置进行改装用以提高低压纯氮气产量的方法
CN114216301A (zh) * 2021-11-08 2022-03-22 常州市长宇实用气体有限公司 深冷分离及生产高纯度液氮的装置及方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949708A (zh) * 2016-11-25 2017-07-14 乔治洛德方法研究和开发液化空气有限公司 一种对原有低温空分装置进行改装用以提高低压纯氮气产量的方法
CN106949708B (zh) * 2016-11-25 2020-02-11 乔治洛德方法研究和开发液化空气有限公司 一种对原有低温空分装置进行改装用以提高低压纯氮气产量的方法
CN114216301A (zh) * 2021-11-08 2022-03-22 常州市长宇实用气体有限公司 深冷分离及生产高纯度液氮的装置及方法

Similar Documents

Publication Publication Date Title
CN103277981B (zh) 一种提高空分装置氮氧产品比例的装置及方法
CN103896273B (zh) 一种多晶硅还原尾气回收利用的方法及系统
CN203744655U (zh) 空分装置氮气扩能改造系统
CN102445054A (zh) 一种由空气分离制取氧气和氮气的工艺
CN102153092A (zh) 一种热泵精馏与多效精馏集成的三氯氢硅提纯装置及工艺
CN102435045A (zh) 液氮洗涤净化合成气及其深冷分离回收lng装置
CN108106326B (zh) 一种氪氙精制工艺中循环利用氮气的方法及其装置
CN202522015U (zh) 带有制冷设备的分离提纯氖和氦的装置
CN207649221U (zh) 一种生产高纯氧的装置
CN103759500A (zh) 一种低能耗制高纯氮的方法及装置
CN206724574U (zh) 一种低能耗的同时生产富氧气体和高纯氮气的装置
CN206094746U (zh) 一种从富甲烷气中提取液态甲烷的新型装置
CN203432208U (zh) 超低压制取高纯氧气和氮气装置
CN102285658B (zh) 超纯三氯氢硅制备的多级全热耦合精馏生产装置和工艺方法
CN202382518U (zh) 液氮洗涤净化合成气及其深冷分离回收lng装置
CN204702504U (zh) 一种合成气分离制取氢气及高纯一氧化碳装置
CN103438663A (zh) 超低压制取高纯氧气和氮气装置及工艺
CN206156758U (zh) 一种气体反应釜系统及其气体的纯化装置
CN102923731B (zh) 高纯氨制备工艺中冷量利用装置及方法
CN103725313B (zh) 催化重整预加氢反应产物的二级冷凝分离方法及装置
CN107726732A (zh) 一种生产高纯氧的方法及装置
CN210855900U (zh) 一种利用炼钢高炉气生产多元醇的设备
CN205079543U (zh) 深冷分离及生产低纯度氧、高纯度氧和氮的装置
CN103727742A (zh) 一种炼化干气的回收方法及设备
CN107513597A (zh) 一种单水洗塔处理两路气体的双竖炉联合生产系统及方法

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140730

Termination date: 20150315

EXPY Termination of patent right or utility model