Comparison of oxidation absorption and reduction absorption process for sulfur recovery tail gas treatment of natural gas treatment plants in China Part Ⅰ: Technical section

•The research results closely follow China's latest national standards for the natural gas industry.•Providing a detailed comparison of two main kinds of tail gas treatment processes used in China's natural gas industry for the first time.•The calculation data comes from the actual data of the natural gas treatment plant in the Sichuan basin.•Multiple built project data are used for analysis and validation.