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| 氧化吸收工艺尾气焚烧炉中SO3生成动力学 |
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赵西1,2,谢武君1,2,李金金1,2,常宏岗1,2,陈世明3,丁桐1,2
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1.中国石油西南油气田公司天然气研究院;2.国家能源高含硫气藏开采研发中心 ;3.中国石油西南油气田公司开发处
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| 摘要: |
| 目的 研究采用氧化吸收工艺的硫磺回收装置尾气焚烧炉操作参数和气体条件变化对SO3生成的影响,以减少尾气焚烧炉中SO3的生成。方法 在实验室中利用管式炉模拟尾气焚烧炉研究SO3的生成,采用控制冷凝法测定反应管出口气体中SO3含量。仅在气相条件下研究不同工况和气质条件对SO3生成的影响。结果 SO2和O2体积分数增加会增加SO3体积分数,SO3体积分数与反应气体停留时间呈线性关系,在反应体系中引入CS2也能明显提高SO3体积分数,但对SO3生成率无明显影响；反应体系中引入少量CH4也会明显提高体系中SO3体积分数,并提高SO3生成率。结论 明确了SO3生成情况与尾气焚烧炉操作参数和气质条件的关系。SO3生成对反应物SO2和O2的反应级数分别为0.87和0.45,SO2氧化过程的表观活化能为69.04 kJ/mol。 |
| 关键词: 含硫尾气 氧化吸收 尾气焚烧 SO3 控制冷凝法 |
| DOI：10.3969/j.issn.1007-3426.2023.04.001 |
| 分类号: |
| 基金项目:中国石油西南油气田公司博士后项目“克劳斯尾气氧化吸收工艺焚烧炉中硫化物燃烧动力学研究”(B202120)；中国石油天然气股份有限公司科学研究与技术开发项目“含硫天然气硫磺回收及氧化吸收尾气处理关键技术研究(2021DJ2603) |
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| Kinetics of SO3 formation in the tail gas incinerator of oxidized absorption technology |
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Zhao Xi1,2, Xie Wujun1,2, Li Jinjin1,2, Chang Honggang1,2, Chen Shiming3, Ding Tong1,2
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1. Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;2. National Energy R&D Center of High Sulfur Gas Exploitation, Chengdu, Sichuan, China;3. Gas Field Development and Management Department, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China
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| Abstract: |
| Objective The aim is to reduce the formation of SO3 in the tail gas incinerator by analyzing the effects of operating parameters and gas conditions on the formation of sulfur trioxide(SO3) in the tail gas incinerator of sulfur recovery unit using oxidation absorption process. Methods In the laboratory, the formation of SO3 was studied by using tube furnace to simulate tail gas incinerator, and the content of SO3 in the outlet gas of reaction tube was determined by controlled condensation method. The effects of different working conditions and gas conditions on SO3 formation were studied only under gas phase conditions. Results The increase of SO2 and O2 volume fraction would increase the SO3 volume fraction, and the SO3 volume fraction had a linear relationship with the residence time of the reaction gas. The introduction of CS2 in the reaction system could also significantly increase the SO3 volume fraction, but had no significant effect on the SO3 formation rate. A tiny proportion of CH4 in the gas had significant effect on the SO3 volume fraction in the system and increase the SO3 formation rate. Conclusion sIt is clarified the relationship between SO3 formation and operating parameters and gas quality conditions of tail gas incinerator. The reaction orders of SO3 formation to SO2 and O2 were 0.87 and 0.45, respectively. The apparent activation energy of SO2 oxidation process was 69.04 kJ/mol. |
| Key words: sulfur-containing tail gas oxidation absorption tail gas incineration sulfur trioxide controlled condensation method |
