等离子体法由二甲醚合成柴油添加剂

Synthesis of Diesel Fuel Additive from Dimethyl ether via Plasma

采用介质阻挡气体放电技术由二甲醚成功合成了一种柴油添加剂 .在常压低温下以高转化率实现了二甲醚的直接转化 ,得到的二甲氧基烷烃的混合物能够有效提高柴油的十六烷值 ,为性能优良的柴油添加剂 .详细考察了放电区尺寸、反应温度和电源功率等对二甲醚转化的影响 ,在 1 2 0℃、二甲醚流量 3 0 m L /min的条件下 ,二甲醚转化率达 47.2 % ,液体产物选择性达 3 9% .

A diesel fuel additive has been synthesized from dimethyl ether(DME) by using dielectric barrier discharging at atmospheric pressure and low temperature. A high conversion of DME has been obtained. The product is a mixture of dimethoxy containing hydrocarbons with high cetane number, which can be used as a high efficienty diesel fuel additive. The results indicated that the length of discharge gap, reaction temperature and discharge power significantly affected the conversion of DME. At 120 ℃ and flow rate of DME 30 mL/min the maximum conversion of DME reached 47 20% with a selectivity of liquid product more than 39%.