JP4814588B2 - NOx含有軽質ガスからのC2+留分の分離方法 - Google Patents
NOx含有軽質ガスからのC2+留分の分離方法 Download PDFInfo
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- F25J3/0204—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 characterised by the feed stream
- F25J3/0219—Refinery gas, cracking gas, coke oven gas, gaseous mixtures containing aliphatic unsaturated CnHm or gaseous mixtures of undefined nature
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- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
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- F25J3/0228—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 characterised by the separated product stream
- F25J3/0233—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 characterised by the separated product stream separation of CnHm with 1 carbon atom or more
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- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
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- F25J3/0228—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 characterised by the separated product stream
- F25J3/0238—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 characterised by the separated product stream separation of CnHm with 2 carbon atoms or more
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- 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
- F25J3/0228—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 characterised by the separated product stream
- F25J3/0252—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 characterised by the separated product stream separation of hydrogen
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- 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
- F25J2200/74—Refluxing the column with at least a part of the partially condensed overhead gas
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- 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
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
- F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
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- 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
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/02—Multiple feed streams, e.g. originating from different sources
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- 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
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/12—Refinery or petrochemical off-gas
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- 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/62—Ethane or ethylene
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- 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
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/02—Separating impurities in general from the feed stream
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- 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
- F25J2270/00—Refrigeration techniques used
- F25J2270/02—Internal refrigeration with liquid vaporising loop
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- 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
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/40—Ethylene production
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Description
図1は、本発明に関連する一実施の形態に係るNOx含有軽質ガスからのC2+留分の分離方法を実施するための構成を設けた、エチレンプラントの精製工程における脱メタン塔まわりの深冷系の構成の一例を模式的に示す図である。
図2は、本発明の一実施の形態に係るNOx含有軽質ガスからのC2+留分の分離方法を実施するための構成を設けた、エチレンプラントの精製工程における脱メタン塔まわりの深冷系の構成の一例を模式的に示す図である。図2において、図1と同じ構成要素については同一の符号を付して表わしている。
図3は、本発明に関連する一実施の形態に係るNOx含有軽質ガスからのC2+留分の分離方法を実施するための構成を設けた、エチレンプラントの精製工程における脱メタン塔まわりの深冷系の構成の一例を模式的に示す図である。図3において、図1及び図2と同じ構成要素については同一の符号を付して表わしている。
以上、本発明の実施形態及び関連する実施形態として、図1〜3に示す深冷系1,1’,1”について説明したが、本発明の適用は図1〜3に示す深冷系1,1’,1”に限られるものではなく、その趣旨を超えない限りにおいて任意の深冷系に適用することができる。
21〜25,92 熱交換器
31〜34 多段気液分離槽
41 深冷熱交換器
51 水素・低圧メタン分離槽
61 脱メタン塔
62 NOx含有軽質ガスストリッパ(NOx含有軽質ガス蒸留塔)
71 還流槽
81〜88,91 調節弁
Claims (1)
- メタン、炭素数2以上の炭化水素(以下「C2+」という。)、及び窒素酸化物を含有するガス(以下「NOx含有軽質ガス」という。)から、C2+留分を分離する方法であって、
(A)水素、メタン及びC2+を含み、窒素酸化物を含有しない原料を供給されて、これを気相成分と液相成分とに分離する気液分離槽と、
(B)該気液分離槽により分離された気相成分を、水素留分とメタン留分(以下「低圧メタン留分」という。)とに分離する水素・低圧メタン分離槽と、
(C)該気液分離槽により分離された液相成分を蒸留し、液相成分をC2+留分として分離する脱メタン塔と、
(D)該脱メタン塔の塔頂成分を冷却し、気相成分をメタン留分(以下「高圧メタン留分」という。)として分離するとともに、液相成分のうち一部をメタン留分(以下「中圧メタン留分」という。)として更に分離し、残りを該脱メタン塔に還流する還流槽と、
(E)該気液分離槽により分離された気相成分を、該水素・低圧メタン分離槽により分離された水素留分及び低圧メタン留分、並びに、該還流槽により分離された中圧メタン留分及び高圧メタン留分と熱交換させることにより冷却する深冷熱交換器とを備えた深冷系において、
NOx含有軽質ガスをNOx含有軽質ガス蒸留塔に供給して蒸留し、液相成分と気相成分とに分離するとともに、得られた気相成分を該気液分離層を通過させず直接該脱メタン塔に供給することにより、NOx含有軽質ガス中のC2+留分を分離するように構成した
ことを特徴とする、NOx含有軽質ガスからのC2+留分の分離方法。
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JP2005256506A JP4814588B2 (ja) | 2005-03-31 | 2005-09-05 | NOx含有軽質ガスからのC2+留分の分離方法 |
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JP2005256506A JP4814588B2 (ja) | 2005-03-31 | 2005-09-05 | NOx含有軽質ガスからのC2+留分の分離方法 |
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JP2006307134A JP2006307134A (ja) | 2006-11-09 |
JP4814588B2 true JP4814588B2 (ja) | 2011-11-16 |
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Families Citing this family (3)
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JP4624336B2 (ja) * | 2006-11-20 | 2011-02-02 | 鹿島石油株式会社 | 深冷分離設備内に蓄積したNOx化合物の検出方法 |
CN111704521B (zh) * | 2020-06-22 | 2021-10-26 | 中国科学院过程工程研究所 | 一种烯烃反应产物急冷处理系统和急冷处理方法 |
CN114087849A (zh) * | 2021-11-25 | 2022-02-25 | 北京恒泰洁能科技有限公司 | 一种裂解气深冷分离方法 |
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JPS61189233A (ja) * | 1985-02-15 | 1986-08-22 | Mitsui Eng & Shipbuild Co Ltd | 炭化水素分解物の精製法 |
US5634354A (en) * | 1996-05-08 | 1997-06-03 | Air Products And Chemicals, Inc. | Olefin recovery from olefin-hydrogen mixtures |
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