Patent ID: 8513480
Filing Date: 2013-08-20
Classification: C10G,Y02P

Abstract:
1. A method of hydroizomerization and isomerization of C4-C8 hydrocarbon fractions during simultaneous chemical reaction and distillation, the method comprising: feeding a fraction of C4-C8 hydrocarbons into a distillation zone column disposed between an isomerization reaction zone reactor and a hydroisomerizarion reaction zone reactor, the hydrocarbons comprising from about 0% to about 30% mass of benzene; supplying paraffin C4-C6 hydrocarbon from a feed of a reaction-rectification column to an isomerization reaction zone disposed higher than the feed; supplying aromatic, naphthenic and paraffin hydrocarbons C7 and heavier from the feed of the reaction-rectification column to a hydroisomerization reaction zone disposed lower than the feed; feeding paraffin hydrocarbons C5 and lighter from a distillation zone disposed between the izomerization reaction zone and the hydroisomerization reaction zone into a second isomerization zone disposed higher than a lateral selector of the reaction-rectification column; obtaining C5 and heavier paraffin hydrocarbons by a stream out of the top of the reaction-rectification column, then condensing the stream and blowing off a hydrogen-containing gas; obtaining C6 paraffin hydrocarbons of a normal and iso-structures from a stream out of the lateral selector of the reaction-rectification column; and obtaining C6 and heavier naphtenic hydrocarbons and C7 and heavier hydrocarbons from a stream out of the bottom of the reaction-rectification column.