高灰分煤气化最佳可行操作参数的确定

IF 3.3 Q3 ENERGY & FUELS
Priyank P. Dave, Parth D. Shah, Taha Poonawala, S. Channiwala, J. Parikh
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引用次数: 1

摘要

在发电中使用煤炭造成了严重的颗粒物排放和效率限制问题。通过气化路线发电是一种潜在的环保方法。然而,高灰分含量煤的气化本身是一个主要挑战,因为高灰分含量(> 40%)限制反应速率并导致流动阻力从而显著影响气体质量。为了克服这一限制,必须确定其气化的最佳可行操作参数。在本研究中,使用两相平衡模型来确定五种不同类型煤的气化当量比的最佳可行范围,这些煤的灰分含量在干重百分比的基础上从41.08%变化到52.56%。还对富氧空气和蒸汽的添加进行了参数研究,以找到最佳的工艺配置。此外,使用响应面方法来优化操作变量。通过分析,最终观察到,对于高灰分煤,最佳可行的操作参数是使用26.5%O_2-富集空气,通过蒸汽添加10%的质量。图形摘要
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Determination of optimally feasible operating parameters for gasification of high-ash-content coal
The use of the coal in power generation poses serious issues of particulate emissions and efficiency limitations. Power generation through a gasification route is a potential eco-friendly method. However, the gasification of high-ash-content coal itself is a major challenge, as the presence of high ash content (> 40%) limits the rate of reaction and leads to flow resistance, significantly affecting the gas quality. To overcome this limitation, one has to determine the optimal feasible operating parameters for its gasification. In the present investigation, a two-phase equilibrium model is used to determine the optimally feasible range of the equivalence ratio for gasification of five different types of coals whose ash content varies from 41.08 to 52.56% on a dry weight percentage basis. A parametric study is also carried out with respect to enriched O_2 air and steam addition to find the optimal process configuration. Moreover, response surface methodology is used to optimize the operating variables. From the analysis, it is finally observed that for high-ash-content coals, the most optimally feasible operating parameters are the use of 26.5% O_2-enriched air with 10% mass addition by steam. Graphical abstract
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来源期刊
MRS Energy & Sustainability
MRS Energy & Sustainability ENERGY & FUELS-
CiteScore
6.40
自引率
2.30%
发文量
36
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