초록 ▼

A process for the production of aromatic hydrocarbons from petroleum fractions containing paraffins which comprises passing said charge in the presence of hydrogen at 400°C.-550°C. over a catalyst containing from 0.1 to 1.5% by weight of at least one metal selected from the group consisting of plati

A process for the production of aromatic hydrocarbons from petroleum fractions containing paraffins which comprises passing said charge in the presence of hydrogen at 400°C.-550°C. over a catalyst containing from 0.1 to 1.5% by weight of at least one metal selected from the group consisting of platinum, rhenium, iridium, tin and germanium and containing sulfur in a sulfur/metals atomic ratio of from 0 to less than 1, supported on a crystalline, aluminum silicate zeolite containing alkaline cations, said zeolite having a pore dimension larger than 6.5 Angstroms, wherein the catalysts are in fixed beds in two reactors or sets of reactors arranged in parallel and operate at a pressure on the order of from 0.5 to 8 absolute bars wherein when a reactor set (DHC1 ) is producing aromatic hydrocarbons the other reactor set (DHC2 ) is swept by the hydrogen produced by the first reactor set (DHC1) at a temperature adequate for reactivating the catalyst, then inverting the roles of the two sets.

대표청구항 ▼

A process for the production of aromatic hydrocarbons from petroleum fractions containing paraffins which comprises passing said petroleum fractions, in the presence of hydrogen, at 400°C.-550°C. at a pressure of from about 0.5 to 8 bars absolute, over a catalyst containing from 0.1 to 1.5% by weigh

A process for the production of aromatic hydrocarbons from petroleum fractions containing paraffins which comprises passing said petroleum fractions, in the presence of hydrogen, at 400°C.-550°C. at a pressure of from about 0.5 to 8 bars absolute, over a catalyst containing from 0.1 to 1.5% by weight of at least one metal selected from the group consisting of platinum, rhenium, iridium, tin and germanium, and containing sulfur in an atomic sulfur/metals ratio of from 0 to less than 1, supported on a crystalline, zeolitic aluminosilicate compensated by alkali metal cations, having a pore dimension larger than 6.5 Angstroms, said catalyst being in a fixed bed in two reactor sets arranged in parallel in a manner such that when a set of reactors (DHC1) is producing aromatic hydrocarbons, the other set of reactors (DHC2) is being regenerated by contact with the hydrogen from the first set of reactors (DHC1) at a temperature sufficient for reactivating the catalyst, and reversing the operation of the reactors.