天然气水蒸汽重整制氢的PROII模拟分析
PROII simulation analysis of hydrogen production from natural gas steam reforming
李林 1蹇守华 1申莉 1李振光 2刘卓衢 1王继峰 1王雪峰 1刘定坤1
作者信息
- 1. 西南化工研究设计院有限公司 工业排放气综合利用国家重点实验室,国家碳一化学工程技术研究中心,四川 成都 610225
- 2. 内蒙古庆华集团乌斯太能源化工有限公司,内蒙古 阿拉善 750336
- 折叠
摘要
天然气水蒸汽重整作为最重要的制氢工艺之一,需要消耗大量天然气,通过优化重整工艺,能有效减少天然气消耗.应用化工模拟软件PROII,对天然气水蒸汽重整制氢工艺中转化及中变反应过程进行了模拟.反应后残余甲烷干基含量(物质的量分数)的模拟值与实测值的误差小于1.5％,表明模型可靠有效.利用模型对转化及中变反应过程的操作参数进行了灵敏度分析.结果表明,当水碳比(物质的量之比)为3.0、转化炉出口温度为820 ℃、转化气出口压力为1.2 MPa时,天然气甲烷转化率较高(约87％),燃料消耗量较少(约70 m3/h),此时是最佳重整条件,可作为该场景下实际生产的工艺控制指标.
Abstract
Natural gas steam reforming,as one of the most important hydrogen production processes,requires a significant amount of natural gas consumption.By optimizing the reforming process,it is possible to effectively reduce natural gas consumption.Using the chemical simulation software PROII,the conversion and shift reaction processes in the hydrogen production process from natural gas steam reforming were simulated.The error of the simulated value and the measured value of residual methane dry basis content(amount-of-substance fraction)is less than 1.5%,indicating that the simulation model is reliable and effective.Sensitivity analysis of the operating parameters in the conversion and shift reaction processes was also conducted based on this simulation model.The results show that when the water-carbon ratio(mole ratio)is 3.0,the outlet temperature of the conversion furnace is 820℃,and the outlet pressure is 1.2 MPa,the methane conversion rate of natural gas is higher(about 87%),and the fuel consumption is lower(about 70 m3/h).This is the optimal reforming condition and can be used as important process control indicators for actual production process.
关键词
天然气蒸汽重整/氢气/模拟分析/水碳比/温度/压力Key words
natural gas steam reforming/hydrogen/simulation analysis/water-carbon ratio/temperature/pressure引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据