A kind of liquid phase solvent and its application of acetylene hydrogenation preparation ethylene slurry state bed

Abstract

The invention relates to a liquid-phase solvent for preparing an ethylene slurry bed through acetylene hydrogenation. The liquid solvent comprises the following components in parts by weight: 0.5 to 15 parts of ionic liquid, 0.5 to 10 parts of hydrogen donor and 75 to 105 parts of electron donor solvent. The liquid-phase solvent provided by the invention has good hydrogen donating capacity, hydrogen free radical transfer capacity and green oil dissolving capacity, the green oil coverage amount is greatly reduced and the service life of a catalyst is prolonged. The invention further protects application of the liquid solvent to the process for preparing the ethylene slurry bed through acetylene hydrogenation.

Description

technical field [0001] The invention relates to the field of industrial production of ethylene, in particular to a liquid phase solvent for preparing ethylene slurry bed by hydrogenation of acetylene. Background technique [0002] With the depletion of petroleum resources, the development of coal chemical industry as a raw material chemical process has become an important process to replace the petrochemical route, which has attracted widespread attention and achieved rapid development. [0003] Ethylene is the most important basic raw material in petrochemical industry, known as "the mother of petrochemical industry". Widely used in plastics, lubricating oils, polymers and some intermediates, currently mainly produced from petroleum or low-carbon alkanes through cracking. In coal chemical technology, the production of acetylene by using coal as raw material through calcium carbide process has been widely used. Using acetylene as raw material under the action of selective h...

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Problems solved by technology

[0004] Although the selective hydrogenation of acetylene is a current focus of attention, its research content is mainly applied to the removal of trace amounts of acetylene (0.01-5% by volume) in the process of producing ethylene from petroleum hydrocarbon cracking, and for the catalytic selective hydrogenation that uses high-concentration acetylene as raw material. Hydrogenation ethylene process and catalysts are rarely explored, and the corresponding large-scale industrial application has not been reported.

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