Heavy oil hydrogenation slurry bed reactor and heavy oil hydrogenation method

Abstract

The invention relates to a heavy oil hydrogenation slurry bed reactor and a heavy oil hydrogenation method. The heavy oil hydrogenation slurry bed reactor comprises a riser (4), an expansion section (1) at the top of the riser and a downcomer (8), wherein the expansion section (1) is communicated with the upper part of the downcomer (8), the lower part of the riser (4) is communicated with the bottom of the downcomer (8), a slurry phase separator is arranged in the expansion section (1), the slurry phase separator is of a sleeve structure comprising an inner cylinder (3) and an outer cylinder (2), a fluid distributor (7) is arranged at the bottom of the riser (4), a raw material inlet (9) is formed in the bottom of the riser (4), and a material outlet (10) is formed in the top of the expansion section. The slurry bed reactor provided by the invention is suitable for heavy oil hydrogenation process and can realize hydrogenation reaction to separate a light oil product and an unreacted heavy oil product. The slurry bed reactor provided by the invention can also inhibit the generation of coke particles of a heavy oil reaction system and effectively prolong the operation period of the reactor.

Description

technical field [0001] The invention relates to a slurry bed reactor and its application method, more specifically, to a slurry bed loop reactor suitable for heavy oil hydrogenation process and a heavy oil hydrogenation method. Background technique [0002] Hydrogenation is an important technical route for the treatment of inferior raw materials. Through hydrogenation, impurities such as metals, colloids, residual carbon, sulfur, and nitrogen in heavy oil products can be effectively removed. At present, the most commonly used in the hydrogenation process is a downflow fixed bed reactor, that is, a trickle bed reactor. However, due to the high content of impurities in heavy oil products (such as residual oil and coal liquefied oil), it is easy to cause hydrogenation catalyst poisoning or Catalyst pores are clogged and deactivated quickly, and impurities may clog the bed layer, causing a rapid increase in pressure drop, resulting in poor working conditions of the reactor, or e...

AI Technical Summary

Problems solved by technology

Because heavy distillate oil is relatively viscous, has high impurity content, and is easy to block, this slurry bed loop reactor is not suitable for heavy oil hydrogenation process

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