Process for the preparation of low molecular weight olefins

摘要

Low molecular weight olefins are prepared by catalytic cleavage of methanol. The cleavage gas produced in this way is subjected to washing to remove dimethyl ether and carbon dioxide. The olefins are subsequently removed from the washed cleavage gas at low temperatures. The washing of the cleavage gas can be carried out with methanol which is subsequently catalytically cleaved.