A kind of method for producing propane by conversion of hydrogenated light hydrocarbons

Abstract

The invention discloses a method for producing propane by hydrogen conversion of light hydrocarbons. The light hydrocarbon raw material, hydrogen-rich gas and circulating light hydrocarbons are heated to the reaction temperature, and catalytic cracking reaction occurs under the condition of an acidic catalyst. The reaction products are cooled and fractionated to obtain dry gas, propane, and aromatic gasoline components respectively. Unreacted light components are obtained. The hydrocarbon feedstock, hydrogen-rich gas and recycle light hydrocarbons are returned to the reactor to continue the reaction. On the one hand, the present invention uses light alkanes as raw materials, which can effectively utilize a large amount of excess light alkanes in refineries; Increase feedstock conversion and propane yield.

Description

technical field

[0001] The invention belongs to the field of petrochemical industry, and in particular relates to a method for producing propane by converting light hydrocarbons near hydrogen. Background technique

[0002] In recent years, propane dehydrogenation (PDH) projects have sprung up, the production capacity of propylene in this process has gradually increased, and the source of raw propane has gradually become the focus of enterprises. At present, coastal cities can import from the United States, the Middle East, etc., but the first thing to consider for new PDH projects in the mainland is the source and transportation of propane. Domestic propane mainly comes from refinery liquefied gas or oilfield associated gas. The propane content is low and the storage is scattered, and its sulfur content is also high.

[0003] At present, the domestic liquefied petroleum gas market is overcapacity, and the consumption structure of civil liquefied gas resources is shifting to...

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