基于CaO原位与非原位CO2捕集的煤底灰催化生物质气化制氢工艺模拟

张传昊; 刘吉; 傅国志; 胡斌; 马宗虎; 杜小泽

doi:10.19912/j.0254-0096.tynxb.2023-1684

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (2) : 1-9. DOI: 10.19912/j.0254-0096.tynxb.2023-1684

基于CaO原位与非原位CO₂捕集的煤底灰催化生物质气化制氢工艺模拟

张传昊¹, 刘吉¹, 傅国志², 胡斌¹, 马宗虎², 杜小泽³

作者信息 +

PROCESS SIMULATION OF COAL BOTTOM ASH-CATALYZED BIOMASS GASIFICATION COUPLING WITH EX-SITU AND IN-SITU CARBON CARPTURE FOR H₂ PRODUCTION

Zhang Chuanhao¹, Liu Ji¹, Fu Guozhi², Hu Bin¹, Ma Zonghu², Du Xiaoze³

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文章历史 +

摘要

使用Aspen Plus软件建立煤底灰催化生物质气化制氢模型,将其分别与非原位和原位的CO₂捕集系统耦合,研究温度、压力、钙料比、水料比与煤底灰催化剂添加量对产品合成气组分与氢产率的影响。煤底灰有利于气化制氢,可显著提高H₂产率。CaO非原位CO₂捕集对生物质气化制氢的H₂产率无影响,但能显著降低CO₂排放,H₂体积分数最高可达81.0%,H₂产率最高可达106.0 g/kg。CaO原位吸收增强的制氢工艺能够促进生物质气化并将H₂产率提高至110.5 g/kg,相应的H₂体积分数为85.7%,但该工艺脱碳能力不及前者。基于平准化制氢成本,CaO原位吸收增强相比于CaO非原位CO₂捕集具有更低的成本,且后者受制氢规模的影响更显著。

Abstract

The biomass gasification catalyzed by coal bottom ash for H₂ production was studied by Aspen Plus software herein. The ex-situ and in-situ carbon capture was coupled with the catalytic gasification model. The effects of temperature, pressure, CaO/biomass ratio, steam/biomass ratio and addition ratio of coal bottom ash on the composition of syngas and the H₂ yield were studied. As the results, coal bottom ash is beneficial for the H₂ production from biomass gasification, and the H₂ yield can be significantly increased by coal bottom ash. The ex-situ calcium looping almost does not affect the H₂ yield but significantly reduces CO₂ emission. The H₂ volume fraction can be up to 81.0%, with a highest H₂ yield of 106.0 g/kg. The H₂ production technigue enhanced by in-situ CaO sorption promotes the biomass gasification reaction and raises the H₂ yield up to 110.5 g/kg with an H₂ volume fraction of 85.7%. Whereas, its decarbonization ability cannot match the former. According to the levelized cost of hydrogen, in-situ carbon capture has lower cost for H₂ production, and the influence of scale is greater on the ex-situ calcium looping.

导出引用

张传昊, 刘吉, 傅国志, 胡斌, 马宗虎, 杜小泽. 基于CaO原位与非原位CO₂捕集的煤底灰催化生物质气化制氢工艺模拟[J]. 太阳能学报. 2025, 46(2): 1-9 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1684

Zhang Chuanhao, Liu Ji, Fu Guozhi, Hu Bin, Ma Zonghu, Du Xiaoze. PROCESS SIMULATION OF COAL BOTTOM ASH-CATALYZED BIOMASS GASIFICATION COUPLING WITH EX-SITU AND IN-SITU CARBON CARPTURE FOR H₂ PRODUCTION[J]. Acta Energiae Solaris Sinica. 2025, 46(2): 1-9 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1684

中图分类号： TK6

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