NATURAL GAS LIQUID UPGRADING BY IONIC LIQUID CATALYZED ALKYLATION.

摘要

We provide a process, comprising: a. dehydrogenating natural gas liquid to produce a mixture comprising olefins and unconverted paraffins; b. without further purification or modification, sending the mixture to a single alkylation reactor; and c. alkylating the olefins with an isoparaffin, using an ionic liquid catalyst, to produce one or more alkylate products. We also provide an integrated process unit to perform the process, comprising: a. a dehydrogenation reactor; b. a single alkylation reactor; c. a separator, following the alkylation reactor, that separates effluent from the alkylation reactor into a catalyst phase and a hydrocarbon phase; d. a distillation unit, following the separator, that receives the hydrocarbon phase and separates it into alkylate products, an unreacted paraffin phase, and an isoparaffin phase; e. a first recycle line that feeds unreacted paraffin phase to the dehydrogenation reactor; and f. a second recycle line that feeds isoparaffin phase to the alkylation reactor.