分子筛对变压器油的脱硫醇性能

REMOVAL OF MERCAPTAN FROM TRANSFORMER OIL BY MOLECULAR SIEVE

向新变压器油中添加腐蚀性正十二硫醇制备试验用油,以不同分子筛为吸附脱硫材料,对试验用油进行吸附脱硫处理,考察分子筛类型和尺寸、用量、吸附处理温度和时间对试验用油中腐蚀性硫脱除效果的影响。结果表明:颗粒直径0.5~1.0 mm的13X分子筛的处理条件更温和、脱硫效果更好;最佳处理条件为13X分子筛添加量(w)6%、吸附次数2次、处理温度30℃、处理时间4 h;在最佳条件下,13X分子筛对试验用油中腐蚀性硫的脱除率达到98.1%。与活性炭相比,13X分子筛对变压器油中腐蚀性硫的脱除效果更好,处理后的变压器油显示为非腐蚀性,且绝缘性得到了一定的提高。

The experimental oil was prepared by adding corrosive n-dodecanethiol to the new transformer oil.The adsorptive desulfurization of the experimental oil was studied by using different molecular sieves as absorbent materials.The effect of type and size of molecular sieves,dosage,temperature and time of adsorption treatment on the removal of corrosive sulfur from test oil was investigated.The results showed that the optimum treatment conditions were as follows:a diameter of 13X zeolite of 0.5-1.0 mm,a dosage(w)of 13X zeolite of 6%,a treatment temperature of 30℃and a treatment time of 4 h for 2 times of adsorption.Under the optimum conditions,the removal rate of corrosive sulfur in the test oil by 13X zeolite reached 98.1%.Compared with activated carbon,13X zeolite was more effective in removing corrosive sulfur from transformer oil.The treated transformer oil was non-corrosive and could provide better insulation performance.