Patent ID: 7728046
Filing Date: 2010-06-01
Classification: C01B,C10J,C10L,Y02P

Abstract:
1. A process for producing a liquefied petroleum gas, comprising: (i) a step of producing a synthesis gas wherein a synthesis gas, which contains carbon monoxide and hydrogen, is produced from a carbon-containing starting material and at least one selected from the group consisting of H (ii) a step of separating CO wherein a CO-containing gas, which contains carbon monoxide as a main component, and a gas for producing methanol and/or dimethyl ether, which contains carbon monoxide and hydrogen, are separated from the synthesis gas obtained in the step of producing a synthesis gas; (iii) a step of conducting a shift reaction wherein a H (iv) a step of producing methanol and/or dimethyl ether wherein a methanol- and/or dimethyl ether-containing gas, which contains at least one selected from the group consisting of methanol and dimethyl ether, is produced from the gas for producing methanol and/or dimethyl ether obtained in the step of separating CO by reacting carbon monoxide with hydrogen in the presence of a catalyst; (v) a step of producing a lower-paraffin wherein a lower-paraffin-containing gas, which contains propane or butane as a main component of hydrocarbons contained therein, and water, is produced from the methanol- and/or dimethyl ether-containing gas obtained in the step of producing methanol and/or dimethyl ether and the H (vi) a step of separating H (vii) a step of recycling wherein the H