Development and application of cleaning system for high sulfur natural gas purification unit
The ferrous sulfide,hydrogen sulfide,sulfur dioxide and other toxic and harmful gases produced by corrosion should be cleaned before maintenance of high sulfur natural gas purification unit.Aiming at the problem such as limited cleaning effect,heavy metal ions and high cost such as manganese and chromium in the waste liquid,the chemical cleaning system of high sulfur natural gas purification unit with oxidant F,sodi-um persulfate,ethylene diamine tetramethylene phosphoric acid,sodium sulfate and dispersant agent D as the main components was studied and formed through the evaluation methods of ferrous sulfide conversion absorp-tion.The conversion rate of ferrous sulfide was 85.86%,and the absorption rate of hydrogen sulfide was 95.4%.Field applicatin showed that the cleaning system had good cleaning effect,the total phosphorus content in thd waste liquid was 0.24 mg/L,and there was no heavy metal ions such as manganese and chrimium,and the cost was saved by more than 40%.
high sulfurnatural gas purification unitferrous sulfidehydrogen sulfidechemical cleaning
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