引用本文:马枭,李小云,李金金,刘安琪,唐晓东,袁小金. 基于GB 39728-2020的中小规模天然气净化厂达标排放工艺技术经济对比[J]. 石油与天然气化工, 2021, 50(1): 1-8.
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基于GB 39728-2020的中小规模天然气净化厂达标排放工艺技术经济对比
马枭1,2,3,李小云1,2,李金金1,2,刘安琪4,唐晓东3,袁小金5
1.国家能源高含硫气藏开采研发中心;2.中国石油西南油气田公司天然气研究院 ;3.西南石油大学化学化工学院;4.中国石油集团安全环保技术研究院有限公司 ;5.中国石油西南油气田公司川西北气矿
摘要:
随着国家对环境质量要求的日益严格,GB 39728-2020《陆上石油天然气开采工业大气污染物排放标准》由国家生态环境部正式发布,明确了中小规模(硫磺产量<200 t/d)天然气净化厂排放尾气中SO2质量浓度的控制指标为800 mg/m3。若要满足该标准,需进行尾气处理工艺改造。对适用于中小规模天然气净化厂的达标排放尾气处理工艺进行了技术经济对比,针对中等规模(硫磺产量为10~200 t/d)的硫磺回收装置,建议采用氧化吸收工艺；针对小规模(硫磺产量<10 t/d)的硫磺回收装置,建议采用液相氧化还原工艺。 
关键词:  GB 39728-2020  SO2  中小规模  天然气净化  尾气减排
DOI：10.3969/j.issn.1007-3426.2021.01.001
分类号:
基金项目:
Techno-economic comparison of up to standard emission processes for small and medium scale natural gas purification plants based on GB 39728-2020
Ma Xiao1,2,3, Li Xiaoyun1,2, Li Jinjin1,2, Liu Anqi4, Tang Xiaodong3, Yuan Xiaojin5
1. National Energy R&D Center of High Sulfur Gas Exploitation, Chengdu, Sichuan, China;2. Natural Gas Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;3. College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan, China;4. CNPC Research Institute of Safety and Environment Technology, Beijing, China;5. Northwest Sichuan Gas District, PetroChina Southwest Oil & Gasfield Company, Jiangyou, Sichuan, China
Abstract:
With the increasingly stringent requirements of the state on environmental quality, GB 39728-2020 Emission Standard of Air Pollutants for Onshore Oil and Gas Exploitation Industry was officially issued by the Ministry of Ecological Environment of the People's Republic of China, which specifies that the control index of SO2 mass concentration in tail gas from small and medium-sized natural gas purification plants (sulfur output less than 200 t/d) is 800 mg/m3. In order to meet the standard, the tail gas treatment process should be reformed. The technical and economic comparison of tail gas treatment process which are suitable for small and medium scale natural gas purification plants was carried out. For medium scale (sulfur output of 10-200 t/d) sulfur recovery units, oxidation absorption process was recommended. For small scale (sulfur output less than 10 t/d) sulfur recovery units, liquid-phase oxidation-reduction process was recommended.
Key words:  GB 39728-2020  sulfur dioxide  small and medium scale  natural gas purification  emission reduction of tail gas