CN201768471U - 低温甲醇洗原料气冷却器 - Google Patents

低温甲醇洗原料气冷却器 Download PDF

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CN201768471U
CN201768471U CN2010202716691U CN201020271669U CN201768471U CN 201768471 U CN201768471 U CN 201768471U CN 2010202716691 U CN2010202716691 U CN 2010202716691U CN 201020271669 U CN201020271669 U CN 201020271669U CN 201768471 U CN201768471 U CN 201768471U
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heat exchanger
heat
shell
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outlet
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张贤安
王健良
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ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co Ltd
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ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co Ltd
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Priority to PCT/CN2011/001202 priority patent/WO2012009965A1/zh
Priority to JP2013519939A priority patent/JP5480450B2/ja
Priority to US13/812,673 priority patent/US20130206366A1/en
Priority to EP11809154.5A priority patent/EP2597411A4/en
Priority to KR1020127033779A priority patent/KR20130105311A/ko
Priority to CN2011800090731A priority patent/CN103025406A/zh
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/16—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with non-aqueous liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B01D2252/202—Alcohols or their derivatives
    • B01D2252/2021—Methanol
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/102—Removal of contaminants of acid contaminants
    • C10L3/104—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0022—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for chemical reactors
    • 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
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Abstract

本实用新型涉及一种低温甲醇洗原料气冷却器，包括换热器，其特征在于：所述的换热器由第一、第二换热器组成，、第一换热器包含有第一壳体和位于第一壳体内由第一管板支撑的第一换热管，第一壳体上开有原料气入口和、出口，同时在该第一壳体上还开有分别与第一换热管两端相连通的换热介质入口和换热介质出口；上述第二换热器同样包含有第二壳体和位于第二壳体内由第二管板支撑的第二换热管，第二壳体上则开有分别与第二换热管两端相连通的原料气入口和原料气出口，同时在该第二壳体上还开有换热介质入口和换热介质出口。采用上述结构后，可以使第二壳体及其管板采用较薄的板材，故在满足生产工艺的要求下，能明显节省冷却器的材料及费用，而使该产品更具市场竞争力。

Description

低温甲醇洗原料气冷却器
技术领域
本实用新型涉及一种冷却器，具体指一种低温甲醇洗原料气冷却器。
背景技术
为了满足下一步工艺的需求，需要对低温甲醇洗原料气进行冷却，通常该冷却工艺是通过冷却器来实现的。现有的冷却器包括有一台换热器，如图1所示，其中，换热器又包含有壳体和位于壳体内由管板支撑的换热管，冷却时，原料气走壳程，换热介质走管程，即在壳体上开有原料气入口和原料气出口，同时在壳体上还开有与换热管一端相连通的换热介质入口和与换热管另一端相连通的换热介质出口，当换热介质有多种时，换热介质的入口和出口就相应的设置有多个，以满足不同换热介质在相应的换热管中流动。目前的换热介质主要采用CO2产品气(操作压力通常为：0.19Mpa)、H2S浓缩塔尾气(操作压力通常为：0.08Mpa)、合成气(操作压力通常为：5.0Mpa)，这样40℃、5.5Mpa原料气进入原料气冷却器壳程，经过换热器后冷却到-13℃～-20℃之间。
采用上述换热器，虽然能达到冷却低温甲醇洗原料气的目的，但由于原料气为高压介质，这就要求换热器的壳体和管板能承受较高的压力，也就是，换热器的壳体需要做成耐高压的厚壁容器，管板采用厚管板。显然，这样的结构必然会提高冷却器的制作成本，而出现投资费用高的缺陷。
实用新型内容
本实用新型所要解决的技术问题是针对上述现有技术现状而提供一种成本低的低温甲醇洗原料气冷却器。
本实用新型解决上述技术问题所采用的技术方案为：该低温甲醇洗原料气冷却器，包括换热器，其特征在于：所述的换热器由第一换热器和第二换热器组成，其中第一换热器包含有第一壳体和位于第一壳体内由第一管板支撑的第一换热管，所述第一壳体上开有原料气入口和原料气出口，同时在该第一壳体上还开有与所述第一换热管一端相连通的换热介质入口和与该第一换热管另一端相连通的换热介质出口；上述第二换热器包含有第二壳体和位于第二壳体内由第二管板支撑的第二换热管，所述第二壳体上则开有与所述第二换热管一端相连通的原料气入口和与所述第二换热管另一端相连通的原料气出口，同时在该第二壳体上还开有换热介质入口和换热介质出口。
优先地，由于H2S浓缩塔尾气的操作压力要低于CO2产品气和合成气的操作压力，因此，在所述的第一换热器壳体上的换热介质入口和换热介质出口分别有多个，多个换热介质入口分别为CO2产品气入口和合成气入口，而多个换热介质出口则相应地为CO2产品气出口和合成气出口。这样让H2S浓缩塔尾气走第二换热器的壳程，使第二换热器的第二壳体和第二管板可以采用相对更薄的板材，以进一步降低制作成本。
与现有技术相比，由于本实用新型改成两台换热器进行冷却，且其中第二换热器改为原料气走管程，换热介质走壳程的结构，因而在实际使用时，可以使操作压力较低的H2S浓缩塔尾气走第二换热器的壳程，这样，虽然第一壳体仍需要做成耐高压的厚壁容器，第一管板仍采用厚管板，但由于此时的第一换热器体积远小于原先一台的换热器体积，且第二壳体和第二管板可以采用较薄的板材，故本实用新型的材料费用和制作成本将大大较低，在满足生产工艺的要求下，能明显节省冷却器的材料及制造费用，且结构合理、可靠，而使该产品更具市场竞争力。
附图说明
图1为现有技术中冷却器的结构示意图。
图2为本实用新型实施例的结构示意图。
具体实施方式
以下结合附图实施例对本实用新型作进一步详细描述。
如图2所示，该低温甲醇洗原料气冷却器包括第一换热器1、第二换热器2和喷淋甲醇装置，该两换热器采用常规的结构，即第一换热器1包含有第一壳体11和位于第一壳体内由第一管板支撑的多个第一换热管12，第一壳体11上开有原料气入口g1和原料气出口g2，同时在该第一壳体上还开有换热介质入口和换热介质出口，在本实施例中，第一换热器壳体上的换热介质入口和换热介质出口分别有多个，即分别有两个合成气入口f1、f2和两个合成气出口e1、e2，两个CO2产品气入口b1、b2和两个CO2产品气出口a1、a2。上述多个第一换热管分成两组，一组第一换热管的一端连于合成气入口，一组第一换热管的另一端连于合成气出口，使合成气流动在第一换热器的部分换热管内；而另一第一换热管的一端连于CO2产品气入口，另一组第一换热管的另一端连于CO2产品气出口，使CO2产品气流动在第一换热器的另一部分换热管内。
同样，上述第二换热器2包含有第二壳体21和位于第二壳体内由第二管板支撑的第二换热管22，第二壳体上则开有与所述第二换热管一端相连通的原料气入口和与所述第二换热管另一端相连通的原料气出口，在本实施例中第二换热管的原料气入口有四个，如图2中标号为d1、d2、d3、d4，对应地第二换热管的原料气出口也有四个，如图2中标号为c1、c2、c3、c4；同时在该第二壳体21上还开有换热介质入口和换热介质出口，在这里换热介质为H2S浓缩塔尾气，即为H2S浓缩塔尾气入口h1和H2S浓缩塔尾气出口h2。
上述喷淋甲醇装置与现有技术相同，注入甲醇以防止水分在冷却过程中结冰。
冷却时，原料气经喷淋甲醇装置后分成两路，一路进入第一换热器，即走第一换热器的壳程，与走第一换热器管程的合成气和CO2产品气进行热交换。另一路进入第二换热器，即走第二换热器的管程，与走第二换热器壳程的H2S浓缩塔尾气进行热交换。经第一换热器和第二换热器换热冷却后的原料气又合成一起，进入下一工序。这样，第二换热器壳程仅需要采用设计压力为0.3Mpa的薄壁板材，管板采用薄管板，在与现有冷却器同等的换热效果下，本实用新型的总费用能降低30％～40％，使材料费用和制作成本得到明显地降低。

Claims (2)

1.一种低温甲醇洗原料气冷却器，包括换热器，其特征在于：所述的换热器由第一换热器和第二换热器组成，其中第一换热器包含有第一壳体和位于第一壳体内由第一管板支撑的第一换热管，所述第一壳体上开有原料气入口和原料气出口，同时在该第一壳体上还开有与所述第一换热管一端相连通的换热介质入口和与该第一换热管另一端相连通的换热介质出口；上述第二换热器包含有第二壳体和位于第二壳体内由第二管板支撑的第二换热管，所述第二壳体上则开有与所述第二换热管一端相连通的原料气入口和与所述第二换热管另一端相连通的原料气出口，同时在该第二壳体上还开有换热介质入口和换热介质出口。
2.根据权利要求1所述的低温甲醇洗原料气冷却器，其特征在于：所述的第一换热器壳体上的换热介质入口和换热介质出口分别有多个，所述多个换热介质入口分别为CO2产品气入口和合成气入口，所述多个换热介质出口为相应地CO2产品气出口和合成气出口。
CN2010202716691U 2010-07-23 2010-07-23 低温甲醇洗原料气冷却器 Expired - Lifetime CN201768471U (zh)

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CN2010202716691U CN201768471U (zh) 2010-07-23 2010-07-23 低温甲醇洗原料气冷却器
PCT/CN2011/001202 WO2012009965A1 (zh) 2010-07-23 2011-07-22 低温甲醇洗原料气冷却器
JP2013519939A JP5480450B2 (ja) 2010-07-23 2011-07-22 低温メタノール洗浄用原料ガスの冷却装置
US13/812,673 US20130206366A1 (en) 2010-07-23 2011-07-22 Cooler for Feed Gas Of Low-Temperature Methanol Washing
EP11809154.5A EP2597411A4 (en) 2010-07-23 2011-07-22 COOLER FOR A FILLING GAS IN A LOW TEMPERATURE METHANOL WASHING
KR1020127033779A KR20130105311A (ko) 2010-07-23 2011-07-22 저온 메탄올 세척 원료가스 냉각기
CN2011800090731A CN103025406A (zh) 2010-07-23 2011-07-22 低温甲醇洗原料气冷却器

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EP2597411A1 (en) 2013-05-29
EP2597411A4 (en) 2014-10-08
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US20130206366A1 (en) 2013-08-15
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