Abstract: Due to the larger acid gas fluctuations and small amount of latent sulfur in the process of gas desulfurization and sulfur recovery, PetroChina Southwest Oil and Gas Field Company had developed the degradation inhibitor, i.e. CT15 series liquid complex iron redox desulfurizer with excellent performance, and formed the its solution redox system, supporting analysis method, industrial desulfurization device and process conditions. The technology has solved the previous key problems, such as excessive consumption of chemicals and sulfur blocking pipeline in the process of desulfurization by complex iron, H2S content was less than 10mg/ L after desulfurization, sulfur recovery rate up to 99. 9%, the technical level should be at the leading position in China, it has been widely used in natural gas desulfurization that has medium latent sulfur content, lean acid gas sulfur recovery and tail gas treatment in refinery, which has reached national standard.

摘要： 针对潜硫量不大、酸气波动较大的气体脱硫和硫回收问题, 中国石油西南油气田公司研制性能优良的降 解抑制剂, 开发出CT15 系列络合铁脱硫溶剂, 在国内首次形成了络合铁法液相氧化还原CT15 脱硫溶液体系、配套分 析方法及工业脱硫装置和工艺条件的配套技术。该技术突破以往络合铁法脱硫工艺中存在的化学品消耗过高和硫磺堵 塞管线的关键脱硫后硫化氢含量小于10mg/ L, 硫回收率达99. 9%以上, 技术水平国内领先, 在中等潜硫量的天然气脱 硫、贫酸气硫回收和炼油厂尾气达标中得到工业应用。

关键词: 络合铁, 液相氧化还原, 脱硫溶剂, 工业应用