天然气生物脱硫工艺评述
Review on Natural Gas Biological Desulfurization Process
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- 引用格式:
-
陈赓良.天然气生物脱硫工艺评述[J].天然气与石油,2015,33(3):0.doi:
Chen Gengliang.Review on Natural Gas Biological Desulfurization Process[J].Natural Gas and Oil,2015,33(3):0.doi:
- DOI:
- 作者:
- 陈赓良
Chen Gengliang
- 作者单位:
- 中国石油西南油气田公司天然气研究院
PetroChina Southwest Oil and Gas Field Company Natural Gas Research Institute
- 关键词:
- 生物脱硫；硫杆菌；氧化还原法；Stretford法；Lo-Cat法；络合铁法
Biological desulfurization; Thiobacillus; Oxidation reduction method: Stretford method; Lo-Cat method; Complexing iron method
- 摘要:
- 以SP法为代表的生物脱硫工艺本质上属于氧化还原法脱硫类型。与工业上常用的Stretford法和LoCat法工艺相比，生物脱硫装置基本上不存在溶液发泡及设备堵塞问题。由于受到再生速率的限制，SP法生物脱硫工业装置的设计硫容一般均低于02 kg/m3。但即使在较低的硫容下运行，再生时副产硫酸盐的质量浓度仍可能高达5。因此，生物脱硫工艺较适合应用于对H2S和CO2净化度要求不很高的常压生物能源气体，这是当前气体净化工艺的一个重要发展动向。
Biological desulfurization process represented by S-P method belongs essentially to the oxidation-reduction method type. Compared with Stretford method and Lo-Cat method commonly used in industrγ，basically there is no such problem as solution foaming and blockage biological desulfurization unit. Due to the limitation of regeneration rate, design rapacity of S-P method biological desulfurization process unit is generally Iess than 0.2kg/m3. However, even in low sulfur capacity condition, mass concentration of byproduct sulfate produced from regeneration may be still as high as 5%. Therefore, the biological desulfurization technology is suitable for desulfurization of such atmospheric bioenergy gases as H2S and C02, high purification degree is unnecessary for such gases, which is an important development trend of current gas purification technologies.