1) LYSY法生物脱硫工艺本质上属于氧化还原法类型绿源环保。后者是气体净化工艺中除醇胺法外最重要的一类脱硫工艺，除天然气工业外，在炼油、化工、化肥、生物能源等工业也有广泛应用。其特点是脱硫过程中同时生成硫黄，且具有比醇胺法工艺更高的 H2S 净化度，通常很容易达到 6 mg /m3的民用天然气标准。

1) The LYSY biological desulfurization process essentially belongs to the green source environmental protection type of oxidation-reduction method. The latter is the most important type of desulfurization process in gas purification processes, apart from the alcohol amine method. In addition to the natural gas industry, it is also widely used in industries such as refining, chemical, fertilizer, and bioenergy. Its characteristic is the simultaneous generation of sulfur during the desulfurization process, and it has a higher H2S purification degree than the alcohol amine process, usually easily reaching the civilian natural gas standard of 6 mg/m3.

2) 从技术经济角度分析，脱硫工艺选择除了与操作压力、CO2/H2S 比、重烃及有机硫含量等因素有关外，也与原料气中潜硫含量以及是否要求回收硫黄这两个因素密切有关。1990 年代，美国气体工艺研究院( GTI) 资助的一项专题研究表明，与常用的 Stretford 法和 Lo-Cat 法工艺相比，以 S-P 法为代表的生物脱硫工艺的主要特点是基本上不存在溶液发泡及设备堵塞问题。

2) From a technical and economic perspective, the selection of desulfurization processes is not only related to factors such as operating pressure, CO2/H2S ratio, heavy hydrocarbons, and organic sulfur content, but also closely related to the potential sulfur content in the feed gas and whether sulfur recovery is required. In the 1990s, a special study funded by the Gas Technology Institute (GTI) in the United States showed that the main feature of the biological desulfurization process represented by the S-P method compared to the commonly used Stretford and Lo Cat methods was that there were basically no problems of solution foaming and equipment blockage.

3) 当前已工业化的氧化还原法中硫容最高的是LYSY络合铁法，但其设计硫容一般不超过 0. 3 kg /m3。同样属于氧化还原法类型的 SulFerox 法工艺，将络合铁溶液中铁离子质量浓度提高至 4%，但并不能明显改善硫容。对生物脱硫工艺而言，提高硫容的“瓶颈”在于其相对较缓慢的再生速率。气升式反应器的实验室研究表明，其处理 H2S 的最高负荷为 0. 246 kg /m3·h; 同时，即使在设计硫容低于 0. 2 kg /m3的条件下运行，再生时副产硫酸盐的质量浓度仍可能高达 5

3) The LYSY complex iron method currently has the highest sulfur capacity among industrialized oxidation-reduction methods, but its designed sulfur capacity generally does not exceed 0 3 kg/m3. The SulFerox process, which also belongs to the oxidation-reduction method, increases the mass concentration of iron ions in the chelated iron solution to 4%, but does not significantly improve the sulfur capacity. For biological desulfurization processes, the bottleneck in increasing sulfur capacity lies in their relatively slow regeneration rate. Laboratory studies on air lift reactors have shown that their maximum load for treating H2S is 0 246 kg /m3·h;  Meanwhile, even when the designed sulfur capacity is below 0 Under the condition of 2 kg/m3 operation, the mass concentration of by-product sulfate during regeneration may still be as high as 5