用二氧化氯煤油脱硫

Desulfuration of Kerosene by Chlorine Dioxide

用强氧化性的稳定性二氧化氯溶液，对煤油中的硫醇、硫醚氧化［１，２］，使有机硫氧化成无机硫，再通过洗涤除去，达到降低煤油总硫含量，生产无臭煤油。研究了ＣｌＯ２溶液的加入量、ｐＨ、反应时间和ＣｌＯ２酸性活化剂对脱硫的影响。在常温下，当煤油中ＣｌＯ２溶液加入量为２０％（ｍ）、ｐＨ为５．５—６、反应时间３０ｍｉｎ、用草酸作酸性活化剂，煤油中总硫含量可从５８．６４ｍｇ／Ｌ降至５．０４ｍｇ／Ｌ，脱硫率达９３％。

The mercaptans and sulfides in kerosene are oxidized to inorganic sulfur by strong oxidizing and stable ClO 2 solution.The sulfur is removed from kerosene by washing with water.The total S content of kerosene decreases remarkably and becomes deodorized. In the test,the influence of the amount of ClO 2 solution,pH,reaction time,acidic activating agent on desulfuration is studied.When the amount of ClO 2 solution added is 20%,pH is 5 5—6, reaction time is 30 min and acidic activating agent is oxalic acid,the total S content of kerosene can be reduced from 58 64 to 5 04 mg/L and desulfuration ratio reaches 98%.