超高纯氢低温提纯工艺研究
Study on Low-temperature Ultra-high Purity Hydrogen Purification Method
黄天亮 1陈既东 1段罗斌 1徐国稳 1胡咸军 1陈杰 1熊联友2
作者信息
- 1. 中船鹏力(南京)超低温技术有限公司,南京 211100
- 2. 中国科学院理化技术研究所,北京 100190
- 折叠
摘要
氢能是正在大力发展的重要清洁能源,在使用过程中对氢气纯度有较高的要求.随着燃料电池和半导体行业的迅速发展,本文基于大型氢液化装置在液氢制备和液氢加注过程中回收的纯度 99%以上的氢气提纯需求,对于氢气纯度的要求更加苛刻,一般纯度需求为 5N～6N级别,这对于氢气高效提纯工艺提出了更大的挑战.对低温吸附法、变压吸附法、钯合金扩散法(膜分离)以及金属吸氢法等 4种氢提纯工艺进行了对比分析;实验研究了液氮温区大颗粒活性炭对氢气和氮气的吸附效果;同时采用低温吸附方法设计了 99%以上纯度向超高纯氢气(6N)的提纯工艺,并利用数值模拟软件对低温吸附流程工艺进行了建模分析与优化,目的在于探索和开发适用于工业生产的大流量、高纯度、稳定可靠以及经济高效的超高纯氢提纯工艺.
Abstract
Hydrogen energy is an important clean energy that is being vigorously developed.Hydrogen has high require-ments for its gas purity during use.With the rapid development of the fuel cell and semiconductor industries,the requirements for hydrogen purity are more stringent,and the general purity requirements are 5N～6N,which poses a greater challenge for the development of efficient hydrogen purification processes.This paper is based on the demand for hydrogen purification with a purity of more than 99%recovered during liquid hydrogen preparation and liquid hydrogen filling in a large-scale hydrogen liquefaction plant.In this paper,four kinds of hydrogen purification processes,such as low temperature adsorption,pressure swing adsorption,palladium alloy diffusion(membrane separation)and metal hydrogen absorption,were compared and ana-lyzed.The adsorption effect of large granular activated carbon on hydrogen and nitrogen in liquid nitrogen temperature region was studied by experiments.At the same time,the purification process of ultra-high purity hydrogen(6N)with more than 99%purity was designed by low temperature adsorption method,and the low temperature adsorption process was modeled,analyzed and optimized by numerical simulation software.The purpose is to explore and develop a large flow,high purity,stable and reliable,economical and efficient ultra-high purity hydrogen purification process suitable for industrial production.
关键词
低温吸附法/超高纯氢提纯/活性炭吸附实验/数值建模分析Key words
low temperature adsorption method/ultra-high purity hydrogen purification/activated carbon adsorption experiment/numerical modeling analysis引用本文复制引用
基金项目
国家重点研发计划(2020YFB1506202)
出版年
2024
NETL
NSTL
万方数据