CN212006436U - 深冷空分氮气提产系统 - Google Patents

深冷空分氮气提产系统 Download PDF

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CN212006436U
CN212006436U CN202020692604.8U CN202020692604U CN212006436U CN 212006436 U CN212006436 U CN 212006436U CN 202020692604 U CN202020692604 U CN 202020692604U CN 212006436 U CN212006436 U CN 212006436U
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pipeline
ice maker
stop valve
cooling tower
condenser
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李文献
李俊峰
翟亚男
高全
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Shanxi Jianbang Group Casting Co ltd
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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
    • 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
    • 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
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04775—Air purification and pre-cooling
    • 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
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04812—Different modes, i.e. "runs" of operation
    • F25J3/04824—Stopping of the process, e.g. defrosting or deriming; Back-up procedures
    • 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
    • F25J3/04951—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network
    • F25J3/04957—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network and inter-connecting equipments upstream of the fractionation unit (s), i.e. at the "front-end"
    • 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
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/32—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as direct contact cooling tower to produce a cooled gas stream, e.g. direct contact after cooler [DCAC]
    • 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
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/34—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • 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
    • 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
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

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  • 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

本实用新型涉及深冷空分氮气提产系统，包括水冷机组和换热系统；水冷塔、冷冻泵、第一冰机、第二冰机和空冷塔通过第一管线依次连通，冷冻泵与第一冰机之间安装有第一截止阀，第一冰机和第二冰机之间安装有第二截止阀和第三截止阀，第二冰机和空冷塔之间安装有第四截止阀，水冷塔与冷冻泵之间安装有第五截止阀，与第一冰机和第二冰机并联第二管线，第二管线一端与第一管线上冷冻泵和第一截止阀之间连通，另一端与第一管线上第二冰机和空冷塔之间连通。本实用新型通过增加多台冰机，解决了氮气直接通过循环水系统造成氮气的放空而浪费掉，增加了氮气的产量，避免了氮气的排放出现浪费现象，节能降耗，降低空分单耗，提高企业利润。

Description

深冷空分氮气提产系统
技术领域
本实用新型属于深冷空分技术领域，具体涉及一种深冷空分氮气提产系统。
背景技术
现如今在钢铁、化工等企业中，空分装置是必不可少的，空分所生产的产品：氧气、氮气是必不可少的生产原料。出塔氮气放空后存在浪费，造成空分单耗成本高，造成不少企业随着产能的增加氮气、氧气不够使用。
现在部分企业内，用空分设备提供氮气时，会出现氮气不足的现象，如果用液氮气化提高产量的话，成本会增加。
以6000制氧厂为例，氮气去预冷还有3000-6000立氮气和循环水换热后放空浪费掉了，存在浪费资源现象，也不符合国家排放要求。
发明内容
鉴于此，本实用新型的目的在于，提供一种深冷空分氮气提产系统，通过深冷空分氮气，提高氮气的产量，降低生产单耗成本。
为了达到上述目的，进而采取的技术方案如下：
深冷空分氮气提产系统，包括水冷机组和换热系统；
水冷机组，包括水冷塔、冷冻泵、第一冰机、第二冰机和空冷塔，所述水冷塔、冷冻泵、第一冰机、第二冰机和空冷塔通过第一管线依次连通，而且，第一管线上、且在冷冻泵与第一冰机之间安装有第一截止阀，第一管线上、且在第一冰机和第二冰机之间安装有第二截止阀和第三截止阀，第一管线上、且在第二冰机和空冷塔之间安装有第四截止阀，第一管线上、且在水冷塔与冷冻泵之间安装有第五截止阀，此外，与第一冰机和第二冰机并联第二管线，所述第二管线一端与第一管线上冷冻泵和第一截止阀之间连通，另一端与第一管线上第二冰机和空冷塔之间连通，第二管线上安装有第六截止阀和第七截止阀，同时，第二管线上第六截止阀和第七截止阀之间通过第三管线与第一管线上第二截止阀和第三截止阀之间连通；
换热系统，包括第一冷凝器和第二冷凝器，所述第一冷凝器与第一冰机连接进行换热，第二冷凝器与第二冰机连接进行换热，第一冷凝器和第二冷凝器分别与循环管道连通，且第一冷凝器和第二冷凝器并联。
本实用新型进一步的改进，所述第一冷凝器两侧、且循环管道上分别安装有第八截止阀，第二冷凝器两侧、且循环管道上分别安装有第九截止阀。
本实用新型的有益效果是：本实用新型通过增加多台冰机，解决了氮气直接通过循环水系统造成氮气的放空而浪费掉，增加了氮气的产量，避免了氮气的排放出现浪费现象，节能降耗，降低空分单耗，提高企业利润；给冰机设立并联管线，防止冰机出现故障时会导致停产现象的发生，可使用备用并联管线，保证生产的持续性。
附图说明
构成本申请的一部分的附图用来提供对本实用新型的进一步理解，本实用新型的示意性实施例及其说明用于解释本实用新型，并不构成对本实用新型的不当限定。在附图中：
图1为本实用新型的结构示意图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本实用新型。
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
请参考图1：
深冷空分氮气提产系统，包括水冷机组10和换热系统20；
水冷机组10，包括水冷塔11、冷冻泵12、第一冰机13、第二冰机14和空冷塔15，所述水冷塔11、冷冻泵12、第一冰机13、第二冰机14和空冷塔15通过第一管线16依次连通，而且，第一管线16上、且在冷冻泵12与第一冰机13之间安装有第一截止阀101，第一管线16上、且在第一冰机13和第二冰机14之间安装有第二截止阀102和第三截止阀103，第一管线16上、且在第二冰机14和空冷塔15之间安装有第四截止阀104，第一管线16上、且在水冷塔11与冷冻泵12之间安装有第五截止阀105，此外，与第一冰机13和第二冰机14并联第二管线17，所述第二管线17一端与第一管线16上冷冻泵12和第一截止阀101之间连通，另一端与第一管线16上第二冰机14和空冷塔15之间连通，第二管线17上安装有第六截止阀106和第七截止阀107，同时，第二管线17上第六截止阀106和第七截止阀107之间通过第三管线18与第一管线16上第二截止阀102和第三截止阀103之间连通；
换热系统20，包括第一冷凝器21和第二冷凝器22，所述第一冷凝器21与第一冰机13连接进行换热，第二冷凝器22与第二冰机14连接进行换热，第一冷凝器21和第二冷凝器22分别与循环管道23连通，且第一冷凝器21和第二冷凝器22并联；所述第一冷凝器21两侧、且循环管道23上分别安装有第八截止阀108，第二冷凝器22两侧、且循环管道23上分别安装有第九截止阀109。
当第一冰机13或第二冰机14出现故障时，可利用并联的管线，暂停第一冰机13或第二冰机14工作，不耽误生产的同时，也可进行维修。
以上所述仅为本实用新型的优选实施例而已，并不用于限制本实用新型，对于本领域的技术人员来说，本实用新型可以有各种更改和变化。凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。

Claims (2)

1.深冷空分氮气提产系统，其特征在于，包括水冷机组和换热系统；
水冷机组，包括水冷塔、冷冻泵、第一冰机、第二冰机和空冷塔，所述水冷塔、冷冻泵、第一冰机、第二冰机和空冷塔通过第一管线依次连通，而且，第一管线上、且在冷冻泵与第一冰机之间安装有第一截止阀，第一管线上、且在第一冰机和第二冰机之间安装有第二截止阀和第三截止阀，第一管线上、且在第二冰机和空冷塔之间安装有第四截止阀，第一管线上、且在水冷塔与冷冻泵之间安装有第五截止阀，此外，与第一冰机和第二冰机并联第二管线，所述第二管线一端与第一管线上冷冻泵和第一截止阀之间连通，另一端与第一管线上第二冰机和空冷塔之间连通，第二管线上安装有第六截止阀和第七截止阀，同时，第二管线上第六截止阀和第七截止阀之间通过第三管线与第一管线上第二截止阀和第三截止阀之间连通；
换热系统，包括第一冷凝器和第二冷凝器，所述第一冷凝器与第一冰机连接进行换热，第二冷凝器与第二冰机连接进行换热，第一冷凝器和第二冷凝器分别与循环管道连通，且第一冷凝器和第二冷凝器并联。
2.根据权利要求1所述的深冷空分氮气提产系统，其特征在于，所述第一冷凝器两侧、且循环管道上分别安装有第八截止阀，第二冷凝器两侧、且循环管道上分别安装有第九截止阀。
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