A parametric study on syngas production by adding CO2 and CH4 on steam gasification of biomass system using ASPEN Plus

IF 1 Q4 ENGINEERING, CHEMICAL

Chemical Product and Process Modeling Pub Date : 2024-07-09 DOI:10.1515/cppm-2023-0100

Bingxin Chen

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引用次数: 0

Abstract

Biomass gasification technology is increasingly employed as an environmentally friendly energy source, primarily due to its minimal impact on the environment and its ability to mitigate pollution. This technology excels in producing gas with exceptionally high hydrogen content, making it a valuable source for both fuel and energy carriers. Hydrogen (H2), renowned for its stability and lack of detrimental environmental effects, holds great significance in various applications related to energy utilization and sustainability. In the current work, wood sawdust was utilized as the biomass feedstock for syngas production. The research focused on examining the impact of introducing carbon dioxide (CO2) and methane (CH4) gases into the Gibbs reactors. The steam gasification process was modeled by the ASPEN Plus software, allowing for comprehensive analysis and simulation of the gasification reactions. According to the obtained results, the modeling performed in this study demonstrates good predictive capability when compared to the experimental data. It was shown that when the ratio of CO2 to biomass (C/B) increases, the MFR (mass flow rates) of H2 as well as CH4 decrease, whereas the flow rates of CO2 and carbon monoxide (CO) increase. These findings indicate the influence of the C/B ratio on the distribution of different gases within the gasification process. The reduction in MFR of hydrogen when transitioning from C/B = 0 to C/B = 1 in modes a and b is quantified as 17.51 % and 16.39 %, respectively. These percentages represent the magnitude of the decrease in hydrogen MFR for each specific mode when comparing two carbon dioxide to biomass ratios. When the CH4 to biomass (M/B) ratio increases, the mass flow rates of H2 exhibit a consistent upward trend, while the MFR of CO2 displays a descending form. Specifically, when in the Gibbs reactor, M/B rises from 0 to 1 for modes a and b, the mass flow rates of H2 experience significant increases of 265 % and 243 %, respectively. These findings underscore the direct relationship between the M/B ratio and hydrogen production, highlighting the potential for enhanced hydrogen yields with higher M/B ratios in the studied modes.

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利用 ASPEN Plus 对生物质蒸汽气化系统中添加 CO2 和 CH4 产生合成气的参数研究

生物质气化技术作为一种环境友好型能源被越来越多地采用，这主要是因为它对环境的影响最小，而且能够减轻污染。这种技术擅长生产氢含量极高的气体，使其成为燃料和能源载体的重要来源。氢气（H2）以其稳定性和对环境无有害影响而闻名，在与能源利用和可持续发展有关的各种应用中具有重要意义。在当前的研究中，木锯屑被用作生产合成气的生物质原料。研究重点是考察在吉布斯反应器中引入二氧化碳（CO2）和甲烷（CH4）气体的影响。ASPEN Plus 软件对蒸汽气化过程进行了建模，对气化反应进行了全面的分析和模拟。根据获得的结果，与实验数据相比，本研究中进行的建模显示出良好的预测能力。结果表明，当二氧化碳与生物质（C/B）的比例增加时，H2 和 CH4 的 MFR（质量流量）降低，而二氧化碳和一氧化碳（CO）的流量增加。这些发现表明了 C/B 比率对气化过程中不同气体分布的影响。在模式 a 和 b 中，当从 C/B = 0 过渡到 C/B = 1 时，氢气的 MFR 分别减少了 17.51 % 和 16.39 %。这些百分比代表了在比较两种二氧化碳与生物质比率时，每种特定模式下氢气 MFR 的下降幅度。当 CH4 与生物质 (M/B) 比率增加时，氢气的质量流量呈持续上升趋势，而二氧化碳的 MFR 则呈下降趋势。具体来说，在吉布斯反应器中，当模式 a 和模式 b 的 M/B 从 0 升至 1 时，H2 的质量流量分别显著增加了 265 % 和 243 %。这些发现强调了 M/B 比率与氢气产量之间的直接关系，突出表明在所研究的模式中，M/B 比率越高，氢气产量越高。

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来源期刊

Chemical Product and Process Modeling ENGINEERING, CHEMICAL-

CiteScore

2.10

自引率

11.10%

发文量

期刊介绍： Chemical Product and Process Modeling (CPPM) is a quarterly journal that publishes theoretical and applied research on product and process design modeling, simulation and optimization. Thanks to its international editorial board, the journal assembles the best papers from around the world on to cover the gap between product and process. The journal brings together chemical and process engineering researchers, practitioners, and software developers in a new forum for the international modeling and simulation community. Topics: equation oriented and modular simulation optimization technology for process and materials design, new modeling techniques shortcut modeling and design approaches performance of commercial and in-house simulation and optimization tools challenges faced in industrial product and process simulation and optimization computational fluid dynamics environmental process, food and pharmaceutical modeling topics drawn from the substantial areas of overlap between modeling and mathematics applied to chemical products and processes.