CN210512325U - 基于电解水制氢站的氧气深冷液化制备液氧的装置 - Google Patents
基于电解水制氢站的氧气深冷液化制备液氧的装置 Download PDFInfo
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims abstract description 33
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Abstract
本实用新型公开了基于电解水制氢站的氧气深冷液化制备液氧的装置,其中,来自电解水制氢站的氧气输送管道依次经由氧气脱氢撬块、氧气脱水撬块后连接冷箱的氧通道入口,冷箱的氧通道出口连接液氧储罐,氮气循环压缩机的出口连接第一氮气冷却器的入口,第一氮气冷却器的出口连接膨胀机增压端的入口,膨胀机增压端的出口经由第二氮气冷却器之后连接冷箱的第一氮通道入口,冷箱的第一氮通道出口连接膨胀机膨胀端的入口,膨胀机膨胀端出口连接冷箱的第二氮通道入口,第二氮通道出口通过氮气进气管道连接氮气循环压缩机的入口。本实用新型具有运行安全、管理方便、不产生污染、能量消耗低、液氧纯度高、杂质含量少、适用于各种应用场合的优点。
Description
技术领域
本实用新型涉及基于电解水制氢站的氧气深冷液化制备液氧的装置。
背景技术
燃料电池汽车的全面推广和应用,对于保持和改善大气环境质量、提高人居环境水平,有着突出的经济、社会和环境意义。而作为为氢燃料电池汽车供应氢燃料的主要载体,制氢/加氢站的大范围推广应用,对推动氢燃料电池汽车的产业化,实现氢能的可持续发展有着重要和深远的意义。
随着氢燃料电池汽车的全面推广和应用,会有大量的电解水制氢项目投资建设。由于项目由电解水制备氢气同时生产氧气,以往是将氧气直接放空,造成资源的浪费。因此将氧气回收成为十分重要的课题。
实用新型内容
本实用新型意在寻找一种基于电解水制氢站的氧气深冷液化制备液氧的装置。
本实用新型的基于电解水制氢站的氧气深冷液化制备液氧的装置包括氧气脱氢撬块(装置)、氧气脱水撬块(装置)、冷箱、液氧储罐、氮气循环压缩机、膨胀机;
其中,来自电解水制氢站的氧气输送管道依次经由氧气脱氢撬块、氧气脱水撬块后连接冷箱的氧通道入口,冷箱的氧通道出口连接液氧储罐,
氮气循环压缩机的出口连接第一氮气冷却器的入口,第一氮气冷却器的出口连接膨胀机增压端的入口,膨胀机增压端的出口经由第二氮气冷却器之后连接冷箱的第一氮通道入口,冷箱的第一氮通道出口连接膨胀机膨胀端的入口,膨胀机膨胀端出口连接冷箱的第二氮通道入口,第二氮通道出口通过氮气进气管道连接氮气循环压缩机的入口。
进一步地,冷箱的氧通道、第一氮通道、第二氮通道可实现换热。
进一步地,氮气进气管道与补充氮气管道汇合后连接氮气循环压缩机的入口。
本项目将电解生产的氧气经过预处理除掉其中的氢气和水分,经与板换中的冷氮气进行换热制备液氧。
氮气经压缩机压缩及膨胀机的节流膨胀等过程制得项目所需的冷量。与氧气换热完成后重新进行循环操作。
采用高效的脱氢、脱水设备去除原料气中的杂质,减少对后续设备的影响。
微量的氢气会容易与氧气/液氧达到爆炸极限,优化工艺以便于氢气的及时排除,从而减少安全隐患。
具体工艺流程如下:补充氮气与由冷箱出来的返流低压氮气汇合进入氮气循环压缩机被压缩到一定压力并冷却。然后进入被膨胀机驱动的增压机,利用膨胀机所输出的能量得以增压,冷却后的氮气进入冷箱内主换热器与返流的氮气进行热交换。当冷却到较低温度后,进入透平膨胀机膨胀制冷。膨胀后的氮气进入换热器底部,与脱氢、脱水后的氧气换热制得液氧产品,液氧产品至液氧储罐储存,复热的低压氮气与补充氮气汇合去氮气循环压缩机。
本实用新型具有如下特点:
1、本装置不产生污染,整个生产过程无废气产生,废水是氧气脱氢脱水产生,是氢气与氧气反应生成的纯水,废固是脱氢催化剂与干燥剂,有生产厂家回收处理。
2、电解水制氢是将制得的氧气放空处理,造成资源的浪费。氧气深冷制液氧装置的意义在于液氧回收利用。
3、原料氧气中含有氢气(含氢量≤100ppm),在液化前必须进行脱氢和脱水处理,保证原料氧气中H2≤1ppm,H2O≤0.5ppm,以确保装置的安全正常运行。
4、补充氮气用于膨胀制冷,氮气露点≤-70℃。
本实用新型的工艺和装置有利于解决以下问题:
1、目前氢能源燃料电池汽车的全面推广和应用,对于保持和改善大气环境质量、提高人居环境水平,有着突出的经济、社会和环境意义。
2、目前氢能源燃料的来源只要是电解水制氢,同比其他方法其品质最佳。综上所述,电解水制氢项目会随着氢能源燃料电池汽车的全面推广和应用得到较大的推广和应用。
3、电解水制氢是将制得的氧气放空处理,造成资源的浪费。氧气深冷制液氧装置的意义在于液氧回收利用。
本项目以电解水制氢是将制得的氧气为根本出发点,采用深冷处理制备液氧,变废为宝。符合国家产业政策和当地发展规划。具有较好的经济效益和社会效益。
附图说明
图1为本实用新型的基于电解水制氢站的氧气深冷液化制备液氧的装置的示意图。
附图标记说明
1:氧气脱氢撬块
2:氧气脱水撬块
3:冷箱
4:液氧储罐
5:氮气循环压缩机
6:压缩机出口氮气冷却器
7:膨胀机增压端
8:膨胀机膨胀端
9:增压端出口氮气冷却器。
具体实施方式
以下结合附图和具体实施方式来进一步说明本发明。
如图1所示,本实用新型的基于电解水制氢站的氧气深冷液化制备液氧的装置包括氧气脱氢撬块(装置)1、氧气脱水撬块(装置)2、冷箱3、液氧储罐4、氮气循环压缩机5、膨胀机(7、8);
其中,来自电解水制氢站的氧气输送管道依次经由氧气脱氢撬块1、氧气脱水撬块2后连接冷箱3的氧通道入口,冷箱的氧通道出口连接液氧储罐4,
氮气循环压缩机5的出口连接第一氮气冷却器6的入口,第一氮气冷却器6的出口连接膨胀机增压端7的入口,膨胀机增压端7的出口经由第二氮气冷却器9之后连接冷箱3的第一氮通道入口,冷箱3的第一氮通道出口连接膨胀机膨胀端8的入口,膨胀机膨胀端8出口连接冷箱3的第二氮通道入口,第二氮通道出口通过氮气进气管道连接氮气循环压缩机5的入口。
冷箱3的氧通道、第一氮通道、第二氮通道可实现换热。
另外,本实用新型的装置包括一个补充氮气管道,氮气进气管道与补充氮气管道汇合后连接氮气循环压缩机的入口。
实施例
以每小时处理氧气1000Nm3/h为例。
年操作小时按8000小时计:
原料气氧气摩尔组成99.9%O2、H2≤100ppm、饱和水。产品液氧组成99.9%O2、H2≤1ppm、H2O≤0.5ppm。
电解水制氢站的氧气深冷液化制备液氧,如图1所示的工艺装置流程图。
本实施例的具体步骤是:
1、氧气净化
电解水制氢站的氧气含有少量氢气和水分,需要在液化之前脱除,电解水制氢站的氧气输送至氧气脱氢撬块1,在催化剂作用下,氧气中的氢气和氧气反应生成水,脱除氢的氧气送至氧气脱水撬块2,氧气中的水分被干燥剂吸附。氧气脱水撬块内有干燥剂再生系统,吸附的水分经解析气水分离后排除系统。
2、氮气膨胀制冷
来自管网的补充氮气经调节减压后与来自冷箱的循环氮气合并后送入氮气循环压缩机5加压,加压后的氮气送入压缩机出口氮气冷却器6降温,降温后的氮气送入膨胀机增压端7进一步增压,增压后的氮气送入增压端出口氮气冷却器9冷却降温,后送入冷箱3进一步降温,降温后的氮气送入膨胀机膨胀端8膨胀得到低温氮气,
3、冷箱
膨胀机膨胀端出口的低温氮气与经过净化后的氧气和膨胀机增压端出口的氮气在冷箱3内换热,氧气被冷却制得液氧,液氧送入液氧储罐4,复热后的氮气与补充氮气混合。
4、本实施例主要技术经济指标如下:
序号 | 项目名称 | 单位 | 数量 | 备注 |
1 | 项目总投资 | 万元 | 11349.92 | |
2 | 报批项目总投资 | 万元 | 11349.92 | |
3 | 建设投资 | 万元 | 10966.03 | |
4 | 铺底流动资金 | 万元 | 195.83 | |
6 | 年均营业收入 | 万元 | 4755.56 | |
6 | 年均利润总额 | 万元 | 2399.71 | |
7 | 年均所得税 | 万元 | 599.93 | |
8 | 年均净利润 | 万元 | 1799.78 | |
9 | 财务评价指标 | |||
9.1 | 总投资收益率 | % | 21.80 | |
9.2 | 项目资本金净利润率 | % | 50.89 | |
9.3 | 税后投资回收期 | 年 | 5.66 | 含建设期 |
9.4 | 项目投资税后财务内部收益率 | % | 20.12 |
由以上可知,本项目具有较好的财务指标,财务内部收益率、总投资收益率、项目资本金净利润率均高于行业基准值,投资回收期低于基准回收期,效益良好。
以上已对本实用新型进行了详细描述,但本实用新型并不局限于本文所描述具体实施方式。本领域技术人员理解,在不背离本实用新型范围的情况下,可以作出其他更改和变形。本实用新型的范围由所附权利要求限定。
Claims (3)
1.一种基于电解水制氢站的氧气深冷液化制备液氧的装置,其特征在于,其包括氧气脱氢撬块、氧气脱水撬块、冷箱、液氧储罐、氮气循环压缩机、膨胀机;
其中,来自电解水制氢站的氧气输送管道依次经由氧气脱氢撬块、氧气脱水撬块后连接冷箱的氧通道入口,冷箱的氧通道出口连接液氧储罐,
氮气循环压缩机的出口连接第一氮气冷却器的入口,第一氮气冷却器的出口连接膨胀机增压端的入口,膨胀机增压端的出口经由第二氮气冷却器之后连接冷箱的第一氮通道入口,冷箱的第一氮通道出口连接膨胀机膨胀端的入口,膨胀机膨胀端出口连接冷箱的第二氮通道入口,第二氮通道出口通过氮气进气管道连接氮气循环压缩机的入口。
2.根据权利要求1所述的装置,其特征在于,冷箱的氧通道、第一氮通道、第二氮通道可实现换热。
3.根据权利要求1或2所述的装置,其特征在于,氮气进气管道与补充氮气管道汇合后连接氮气循环压缩机的入口。
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