CN214307873U - 一种空分液化气体生产船 - Google Patents

一种空分液化气体生产船 Download PDF

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CN214307873U
CN214307873U CN202120035186.XU CN202120035186U CN214307873U CN 214307873 U CN214307873 U CN 214307873U CN 202120035186 U CN202120035186 U CN 202120035186U CN 214307873 U CN214307873 U CN 214307873U
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rectifying tower
heat exchanger
liquefied gas
pipeline
gas production
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栾长珍
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Yichang Tiantian Electric 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
    • F25J3/04406—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
    • F25J3/04248—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
    • F25J3/0429—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 feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04296—Claude expansion, i.e. expanded into the main or 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
    • F25J3/04763—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
    • F25J3/04975—Construction and layout of air fractionation equipments, e.g. valves, machines adapted for special use of the air fractionation unit, e.g. transportable devices by truck or small scale use
    • 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
    • F25J3/04975—Construction and layout of air fractionation equipments, e.g. valves, machines adapted for special use of the air fractionation unit, e.g. transportable devices by truck or small scale use
    • F25J3/04987—Construction and layout of air fractionation equipments, e.g. valves, machines adapted for special use of the air fractionation unit, e.g. transportable devices by truck or small scale use for offshore use
    • 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
    • F25J2235/42—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/52—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen enriched compared to air ("crude 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/70—Processing device is mobile or transportable, e.g. by hand, car, ship, rocket engine etc.

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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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

本实用新型公开一种空分液化气体生产船，包括船体，所述船体内依次设有彼此通过管路连接的空气过滤器、压缩机、分子筛净化器、换热器、膨胀机和精馏塔，所述精馏塔为双级精馏塔，精馏塔上段与精馏塔下段铰接连接，精馏塔上段还与折叠油缸伸缩端铰接连接，精馏塔出料口分别通过管线与液化氧气储罐和液化氮气储罐连接；本实用新型能够能够根据电价的时间、地点不同的变化在不同的地区生产空分液化气体，实现节约成本的目的；并且通过折叠油缸的伸、缩使精馏塔上段处于竖立、倒伏状态，可以实现生产或者运输两种工况。

Description

一种空分液化气体生产船
技术领域
本实用新型涉及气体生产船制造技术领域，具体地指一种空分液化气体生产船。
背景技术
目前，国内外生产空分液化气体，采用陆基生产模式，即在陆地上建设工厂，进行生产销售。空分液化气体生产的主要原料是空气，生产的主要成本是电费，由于我国电力行业的快速发展，整体上将会由电力短缺到电力过剩，局部地区有弃电现象发生，且随季节发生变化，因此，需要设计出一种空分液化气体生产船，根据电价的时间、地点不同的变化，使生产船沿江、沿河航行，在不同的地区生产，以实现节约成本的目的。
发明内容
本实用新型的目的在于克服上述不足，提供一种空分液化气体生产船，能够根据电价的时间、地点不同的变化在不同的地区生产空分液化气体，以实现节约成本的目的。
本实用新型为解决上述技术问题，所采用的技术方案是：一种空分液化气体生产船，包括船体，所述船体内依次设有彼此通过管路连接的空气过滤器、压缩机、分子筛净化器、换热器、膨胀机和精馏塔，所述精馏塔为双级精馏塔，精馏塔上段与精馏塔下段铰接连接，精馏塔上段还与折叠油缸伸缩端铰接连接，精馏塔出料口分别通过管线与液化氧气储罐和液化氮气储罐连接。
优选地，所述精馏塔上段还与支撑柱顶部的枕木配合，支撑柱底部固定于船甲板上，精馏塔下段也固定于船甲板上。
优选地，所述换热器数量为两个，分为一级换热器和二级换热器，所述一级换热器和二级换热器之间设有第一管路，所述第一管路与旁支管路一端连通，所述二级换热器出口通过第二管路与膨胀机进口连接，旁支管路另一端与膨胀机进口连接。
优选地，所述旁支管路和第二管路上均设有阀门。
优选地，所述精馏塔上还设有回流管路，回流管路上设有循环泵。
优选地，所述精馏塔上段与精馏塔下段连接的位置一侧通过支铰铰接连接，另一侧通过紧固件可拆卸连接。
本实用新型的有益效果：本实用新型能够能够根据电价的时间、地点不同的变化在不同的地区生产空分液化气体，实现节约成本的目的；并且通过折叠油缸的伸、缩使精馏塔上段处于竖立、倒伏状态，可以实现生产或者运输两种工况。
附图说明
图1 为一种空分液化气体生产船的俯视结构示意图；
图2为图1的右视结构示意图；
图3为精馏塔与折叠油缸配合的结构示意图。
具体实施方式
下面结合附图和具体实施例对本实用新型作进一步的详细描述。
如图1至3所示，一种空分液化气体生产船，包括船体1，所述船体1内依次设有彼此通过管路连接的空气过滤器2、压缩机3、分子筛净化器4、换热器5、膨胀机6和精馏塔7，所述精馏塔7为双级精馏塔，精馏塔7上段与精馏塔7下段铰接连接，精馏塔7上段还与折叠油缸8伸缩端铰接连接，精馏塔7出料口分别通过管线与液化氧气储罐16和液化氮气储罐17连接。
优选地，所述精馏塔7上段还与支撑柱9顶部的枕木9.1配合，支撑柱9底部固定于船甲板10上，精馏塔7下段也固定于船甲板10上。这样设计后当精馏塔7上段翻转成横向平放倒伏状态时，其一端可以搁放于支撑柱9顶部的枕木9.1上，枕木9.1可以承受精馏塔7上段的重量。
优选地，所述换热器5数量为两个，分为一级换热器5.1和二级换热器5.2，所述一级换热器5.1和二级换热器5.2之间设有第一管路5.3，所述第一管路5.3与旁支管路5.4一端连通，所述二级换热器5.2出口通过第二管路5.5与膨胀机6进口连接，旁支管路5.4另一端与膨胀机6进口连接。
优选地，所述旁支管路5.4和第二管路5.5上均设有阀门11。
在上述技术方案中，这样设计后可以根据实际情况选择通过一个换热器5进行换热，或者通过一级换热器5.1和二级换热器5.2加强换热效果。例如打开旁支管路5.4上的阀门，关闭第二管路5.5上的阀门，这样可以通过一级换热器5.1进行换热，关闭旁支管路5.4上的阀门，打开第二管路5.5上的阀门，这样可以通过一级换热器5.1和二级换热器5.2进行换热，提高换热效果。
优选地，所述精馏塔7上还设有回流管路12，回流管路12上设有循环泵13。通过增设回流管路12可以提高精馏塔7的精馏效果。
优选地，所述精馏塔7上段与精馏塔7下段连接的位置一侧通过支铰14铰接连接，另一侧通过紧固件15可拆卸连接。本实施例中紧固件15可以选用螺母与螺栓之间配合的方式来实现可拆卸地安装。
本实施例工作原理如下：
如图1所示，空气通过空气过滤器2过滤，经过压缩机3压缩后通过分子筛净化器4净化，再通过换热器5换热，通过膨胀机6膨胀，通过精馏塔7进行精馏，最终生产出空分液化气体如氧气、氮气，分别导入液化氧气储罐16和液化氮气储罐17内储存；整个生产过程的供电系统采用岸电的方式，岸上配套供电设施；
由于精馏塔7较高，一般高度在30米左右，为使船体1在航行过程中可以顺利通过桥梁等跨江、跨河设施，精馏塔设计成可倾倒折叠的组合形式，即精馏塔7上段与精馏塔7下段铰接连接，通过开启折叠油缸8后，其伸缩端收缩而带动精馏塔7上段翻转呈横向平放倒伏状态时，其一端可以搁放于支撑柱9顶部的枕木9.1上，枕木9.1可以承受精馏塔7上段的重量，而折叠油缸8伸缩端伸长可以带动精馏塔7上段翻转呈竖立状态；总之通过折叠油缸8的伸、缩使精馏塔7上段处于竖立、倒伏状态，用以实现生产或者运输两种工况。
上述的实施例仅为本实用新型的优选技术方案，而不应视为对于本实用新型的限制，本申请中的实施例及实施例中的特征在不冲突的情况下，可以相互任意组合。本实用新型的保护范围应以权利要求记载的技术方案，包括权利要求记载的技术方案中技术特征的等同替换方案为保护范围。即在此范围内的等同替换改进，也在本实用新型的保护范围之内。

Claims (6)

1.一种空分液化气体生产船，包括船体（1），所述船体（1）内依次设有彼此通过管路连接的空气过滤器（2）、压缩机（3）、分子筛净化器（4）、换热器（5）、膨胀机（6）和精馏塔（7），其特征在于：所述精馏塔（7）为双级精馏塔，精馏塔（7）上段与精馏塔（7）下段铰接连接，精馏塔（7）上段还与折叠油缸（8）伸缩端铰接连接，精馏塔（7）出料口分别通过管线与液化氧气储罐（16）和液化氮气储罐（17）连接。
2.根据权利要求1所述的一种空分液化气体生产船，其特征在于：所述精馏塔（7）上段还与支撑柱（9）顶部的枕木（9.1）配合，支撑柱（9）底部固定于船甲板（10）上，精馏塔（7）下段也固定于船甲板（10）上。
3.根据权利要求2所述的一种空分液化气体生产船，其特征在于：所述换热器（5）数量为两个，分为一级换热器（5.1）和二级换热器（5.2），所述一级换热器（5.1）和二级换热器（5.2）之间设有第一管路（5.3），所述第一管路（5.3）与旁支管路（5.4）一端连通，所述二级换热器（5.2）出口通过第二管路（5.5）与膨胀机（6）进口连接，旁支管路（5.4）另一端与膨胀机（6）进口连接。
4.根据权利要求3所述的一种空分液化气体生产船，其特征在于：所述旁支管路（5.4）和第二管路（5.5）上均设有阀门（11）。
5.根据权利要求1所述的一种空分液化气体生产船，其特征在于：所述精馏塔（7）上还设有回流管路（12），回流管路（12）上设有循环泵（13）。
6.根据权利要求1所述的一种空分液化气体生产船，其特征在于：所述精馏塔（7）上段与精馏塔（7）下段连接的位置一侧通过支铰（14）铰接连接，另一侧通过紧固件（15）可拆卸连接。
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