引用本文:易铧,罗东,何金龙,王毅,朱雯钊,朱宏扬. 硫磺回收装置停工检修SO2达标排放技术研究[J]. 石油与天然气化工, 2021, 50(5): 13-16.
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硫磺回收装置停工检修SO2达标排放技术研究
易铧1,2,罗东3,何金龙1,2,王毅4,朱雯钊1,2,朱宏扬1,2
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.中石油安岳天然气净化有限公司;4.中国石油西南油气田川东北作业分公司
摘要:
GB 39728-2020《陆上石油天然气开采工业大气污染物排放标准》发布后,硫磺回收装置在停工除硫期间的SO2短期排放过量问题已成为石油天然气加工行业的环保隐患。分析了这一特殊情况下SO2过量排放的原因,对多套硫磺回收装置除硫期间的排放情况进行了统计和研究。同时介绍了中石油安岳天然气净化有限公司在设备检修停工除硫操作时,利用现有尾气处理装置预洗涤单元作为碱洗系统的技术应用情况,为硫磺回收装置开停工或装置异常时的SO2排放控制提供了一种新的思路。 
关键词:  天然气  净化厂  尾气  碱洗  脱硫  GB 39728-2020
DOI：10.3969/j.issn.1007-3426.2021.05.003
分类号:
基金项目:
Study on sulfur dioxide up to standard emission technology for sulfur recovery unit shutdown maintenance
Yi Hua1,2, Luo Dong3, He Jinlong1,2, Wang Yi4, Zhu Wenzhao1,2, Zhu Hongyang1,2
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. PetroChina Anyue Natural Gas Purification Co., Ltd, Ziyang, Sichuan, China;4. CDB Operating Company, PetroChina Southwest Oil & Gas Field, Dazhou, Sichuan, China
Abstract:
After releasing GB 39728-2020 Emission Standard of Air Pollutants for Onshore Oil and Gas Exploitation and Production Industry, the short-term SO2 excessive emission during the shutdown period of sulfur recovery unit has become a potential environmental protection hazard in the oil and natural gas processing industry. The causes of SO2 excessive emission in this special case were analyzed, and the emission of several sulfur recovery units during the period of sulfur removal were counted and studied. Moreover, this paper introduces the application of prewashing unit of tail gas treatment unit as alkali washing system in PetroChina Anyue Natural Gas Purification Co., Ltd during equipment maintenance and shutdown, which provides a new idea for SO2 emission control during startup and shutdown or abnormal operation of sulfur recovery unit.
Key words:  natural gas  purification plant  tail gas  caustic washing  desulfurization  GB 39728-2020