Simulation and analysis of hydrogen production from pyrolysis gas using Aspen Plus

LI Kaikun; WANG Qinhui; ZHANG Ruiyue; ZHU Yao; YU Chunjiang; FANG Mengxiang

doi:10.19666/j.rlfd.202012295

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Simulation and analysis of hydrogen production from pyrolysis gas using Aspen Plus

更新时间：2025-09-28

- Simulation and analysis of hydrogen production from pyrolysis gas using Aspen Plus
- Thermal Power Generation Vol. 50, Issue 7, Pages: 15-22(2021)
- 作者机构：
  
  浙江大学能源清洁利用国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202012295
  CLC： TQ536.9
- Published Online：31 December 2021，
  
  Published：2021
- 稿件说明：
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LI Kaikun, WANG Qinhui, ZHANG Ruiyue, et al. Simulation and analysis of hydrogen production from pyrolysis gas using Aspen Plus[J]. Thermal power generation, 2021, 50(7): 15-22.
DOI：

LI Kaikun, WANG Qinhui, ZHANG Ruiyue, et al. Simulation and analysis of hydrogen production from pyrolysis gas using Aspen Plus[J]. Thermal power generation, 2021, 50(7): 15-22. DOI： 10.19666/j.rlfd.202012295.

摘要

本文利用Aspen Plus模拟软件

构建了煤炭热解煤气吸附强化重整制氢工艺流程

对强化重整、煅烧再生、蒸汽余热发电等单元进行了详细的模拟。在钙碳比为2.75

水碳比为3.5

重整温度650℃条件下

对不同重整压力(0.5、1.0、1.5、2.0 MPa)工况进行了模拟

利用热效率和(火用)效率、制氢能耗、水耗和单位煤气制氢率等指标对系统进行了性能评价和优化。模拟结果显示

重整压力为0.5 MPa时

系统热力学性能最优。作为对比

开展了水蒸气重整工艺系统的模拟。对比结果显示:相同进料条件下

强化重整制氢氢气产量提升7.66%;能量转化效率达到79.55%

(火用)效率从73.14%提高到77.63%

系统效率显著提高。综合系统效率和氢产量等指标

热解煤气强化重整制氢系统具有较优的技术性能

可作为现阶段煤气制氢的途径之一

是具有应用前景的制氢技术。

Abstract

Simulation of hydrogen production by coal pyrolysis gas sorption enhanced reforming(SER-CPG) technology was established by using Aspen Plus software. Appropriate models for SER unit

calcination regeneration unit and waste heat power generation unit were set up in detail. Furthermore

optimization of the reactor pressure of SER unit under conditions with calcium to carbon ratio of 2.75

water to carbon ratio of 3.5 and reforming temperature of 650 ℃ was carried out. The thermal and exergy efficiency

energy consumption

water consumption during hydrogen production and hydrogen production rate were used to evaluate and optimize the system performance. A conventional CPG steam reforming process with the same feed conditions was chosen for comparison. The results showed that

the production of H2 from SER system increased by 7.66%. The energy efficiency reached 79.55%

and the exergy efficiency increased from 73.14% to 77.63%

indicating a significant improvement in system efficiency. Taking the efficiency and hydrogen production into consideration

the SER-CPG technology has better technical performance

which could be considered as one of the routes of hydrogen production from coal gas at the present stage. In conclusion

the SER-CPG process is a hydrogen production technology with application prospect.

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