Hydrogenation method of coker gasoline

Abstract

The invention discloses a hydrogenation method of coker gasoline. By combination of advantages of a fluidized bed and a stationary bed, dienes and other unsaturated hydrocarbons in raw materials are diluted and heat of reactions is took away by adoption of circulating oil, thus avoiding coking of a catalyst bed layer and reducing the pressure drop of a reactor. Without large changes on devices at present, the method can achieve long-term operation of the devices and increase economic benefit with small investment.

Description

technical field [0001] The invention relates to a hydrogenation method for coking gasoline, which belongs to the technical field of petrochemical industry. Background technique [0002] In recent years, due to the increasing scarcity of petroleum resources worldwide and the increasing demand for energy in various countries, people have paid more and more attention to the technology of residual oil lightening. As a kind of decarbonization technology, residual oil coking process has the advantages of low investment and low operating cost, so it has been widely developed. Coking gasoline, one of the coking products, contains high heteroatoms such as olefins, sulfur, nitrogen, and silicon, and has poor stability. It cannot be used directly as a product, or even directly as a feed for downstream devices. In order to make coker gasoline meet the end product standard or meet the feed requirements of downstream units, hydrorefining or hydrotreating must be carried out. [0003] In...

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Problems solved by technology

Although this method can ensure the non-stop operation of the device, if the raw material is not pretreated, it will cause a large impact on the temperature rise

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