초록 ▼

The invention is a process for separating a mixture of saturated hydrocarbons into normal paraffins, branched chain paraffins, and cyclic paraffins which comprises contacting said mixture with a series of two molecular sieves comprising a first silicalite and a second silicalite which have different

The invention is a process for separating a mixture of saturated hydrocarbons into normal paraffins, branched chain paraffins, and cyclic paraffins which comprises contacting said mixture with a series of two molecular sieves comprising a first silicalite and a second silicalite which have different retention conditions. One of the silicalites is selected so that it will retain normal paraffins and pass through branched chain paraffins and cyclic paraffins. The second silicalite is selected so that it will retain normal and branched chain paraffins and pass through cyclic paraffins. The two molecular sieves are employed in series so that the mixture of saturated hydrocarbons can be separated into normal paraffins, branched chain paraffins, and cyclic paraffins.

대표청구항 ▼

A process for separating a mixture of saturated hydrocarbons into normal paraffins, branched chain paraffins, and cyclic paraffins, which comprises: contacting said mixture at retention conditions with a molecular sieve comprising a first silicalite having a pore size and crystal structure which wil

A process for separating a mixture of saturated hydrocarbons into normal paraffins, branched chain paraffins, and cyclic paraffins, which comprises: contacting said mixture at retention conditions with a molecular sieve comprising a first silicalite having a pore size and crystal structure which will retain normal paraffins, and pass through branched chain paraffins and cyclic paraffins; contacting at retention conditions the unretained mixture of branched chain paraffins and cyclic paraffins with a molecular sieve comprising a second silicalite having a pore size and crystal structure which will retain branched chain paraffins and pass through cyclic paraffins, said second silicalite heated to a temperature of at least 70°C.; recovering the cyclic paraffins unretained by the second silicalite; recovering the normal paraffins by displacing the normal paraffins from the first silicalite with a displacement material; and recovering the branched chain paraffins by displacing the branched chain paraffins from the second silicalite with a displacement material.