BGL气化炉除CH<sub>4</sub>的操作模拟研究

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摘要氮肥行业中BGL气化技术应用前景好,但该技术生产的合成气中CH₄含量较高,无法满足合成氨原料要求。本研究充分考虑气化反应特性,拟在BGL气化炉设第二喷嘴,通过二次补燃的方式去除CH₄。进而,在已建立的新型BGL气化炉模型基础上,探究了二次补燃去除合成气中CH₄的效果。研究表明:补燃剂进料量为第一喷嘴进料量的25%时,出口气体中CH₄含量降至1%以下,且碳转化率大于99%。通过提高第一喷嘴进料蒸气比例可获得用于合成氨生产的高氢碳比合成气。

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	张权聪
	薛康
	曹志凯
	周华

关键词： BGL气化炉二次补燃数学建模

Abstract： BGL gasification technology is promising in the nitrogen fertilizer industry. However, the syngas containing excessive CH₄ produced by the BGL gasification cannot satisfy the demand for the synthetic ammonia process. In this work, a second nozzle was set in the BGL gasifier to eliminate CH₄ via secondary combustion. Then, the effect of secondary combustion was analyzed based on the proposed BGL gasifier model. It was found that the CH₄ concentration was less than 1% and the char conversion was higher than 99% when the gasifying agent of the second nozzle was 25% of that of the first nozzle. The syngas with high H/C used for the synthetic ammonia process can be produced by increasing the steam proportion in the first nozzle.

Keywords： BGL gasifier secondary combustion mathematical modeling

Received 2022-08-01;

Fund:国家自然科学基金(21576228)。

Corresponding Authors: 张权聪,E-mail:2022175104@xmu.edu.cn。 Email: 2022175104@xmu.edu.cn

About author: 张权聪(1992-),男,博士,现从事反应器模拟与优化研究。

引用本文:

张权聪, 薛康, 曹志凯, 周华.BGL气化炉除CH₄的操作模拟研究[J]. 化学工业与工程, 2024,41(1): 111-117

ZHANG Quancong, XUE Kang, CAO Zhikai, ZHOU Hua.Mathematical modeling of CH₄ elimination for BGL gasifier[J]. Chemcial Industry and Engineering, 2024,41(1): 111-117