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    • 31. 发明授权
    • Process for preparing methyl tertiary-butyl ether
    • 制备甲基叔丁基醚的方法
    • US4404409A
    • 1983-09-13
    • US125655
    • 1980-02-28
    • Yasuo FujiwaraTetsuya Takezono
    • Yasuo FujiwaraTetsuya Takezono
    • C07C43/04B01J31/00C07B61/00C07C41/06C07C41/00
    • C07C41/06
    • A process for continuously preparing methyl tertiary-butyl ether with high yield involves reacting an isobutylene-containing/hydrocarbon and methanol by continuously passing the isobutylene and methanol, in a molar ratio of isobutylene to methanol of 1 to 0.6-1.4 at a temperature of 60.degree.-100.degree. C. at a liquid space velocity of 0.1-50 l/hour and at a pressure of 1-50 atmospheres, through a first reactor filled with strong acid type cation exchange resin particles having an average particle diameter of 0.2-10 mm; dividing the mixture of the reaction products in two streams, the flow rate of the first stream being 3-15 times the flow rate of the second stream; recycling the first stream to the first reactor; passing the second stream, at a temperature of 20.degree.-55.degree. C. at a liquid space velocity of 0.1-50 l/hour and at a pressure of 1-50 atmospheres, through a second reactor filled with strong acid type cation exchange resin particles having an average particle diameter of 0.2-10 mm; passing the stream from the second reactor through a fixed bed filled with a water-insoluble solid particulate acid neutralizing agent having an average particle diameter of 0.1-10 mm at a temperature of about 0.degree.-55.degree. C.; passing the resulting reaction mixture into a flashing tower whereby the unreacted hydrocarbon is removed; and recovering a mixture containing MTBE from the bottom of the flashing tower.
    • 以高产率连续制备甲基叔丁基醚的方法包括使异丁烯/烃和甲醇通过连续使异丁烯和甲醇以异丁烯与甲醇的摩尔比在1至0.6-1.4的温度下反应,温度为60℃ 以0.1-50升/小时的液体空间速度和1-50大气压的压力,通过填充有强酸型阳离子交换树脂颗粒的平均粒径为0.2-10的第一反应器 毫米 将反应产物的混合物分成两股,第一流的流量为第二料流的流量的3-15倍; 将第一流回收到第一反应器; 在20〜-5℃的温度下以0.1-50升/小时的液体空间速度和1-50大气压的压力,通过填充有强酸型阳离子交换树脂的第二反应器 平均粒径为0.2-10mm的颗粒; 使来自第二反应器的物流在约0-55℃的温度下通过填充有平均粒径为0.1-10mm的水不溶性固体颗粒酸中和剂的固定床; 将所得反应混合物通入闪蒸塔,除去未反应的烃; 并从闪光塔的底部回收含有MTBE的混合物。