Two-stage heavy oil slurry-bed reactor hydrogenation equipment and application method

Abstract

Two-stage heavy oil slurry-bed reactor hydrogenation equipment and an application method thereof are disclosed. The equipment comprises a first slurry-bed reactor, a first separating unit, a second slurry-bed reactor and a second separating unit. The slurry-bed reactor comprises a riser tube (1) and a downcomer (8). A splitter plate (10) is arranged inside the downcomer (8) to divide the internal space of the downcomer into two parts which are communicated up and down and separated in the middle. The upper part of the riser tube (1) and one side of the two space parts of the downcomer are communicated through an upper connecting pipe (7). The lower part of the riser tube (1) and the bottom of the downcomer (8) are communicated through a lower connecting pipe (15). The other side of the two space parts of the downcomer (8) is provided with a product outlet. The bottom of the riser tube (1) is provided with a raw material inlet. Tops of the riser tube (1) and the downcomer (8) are respectively provided with gas outlets. The two-stage heavy oil slurry-bed reactor hydrogenation equipment and the application method are convenient for long-term operation of the reactors, hydrogenation conversion rate of heavy oil is raised, and slurry processing of subsequent equipment is enhanced.

Description

technical field [0001] The invention relates to a device and method for hydrogenation of heavy oil, more specifically, to a slurry bed reaction device and application method for the hydrogenation process of heavy oil and the refining of light oil produced. 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 the downflow fixed bed reactor, that is, the trickle bed reactor, but heavy oil products such as residual oil and coal liquefied oil are prone to poisoning of the hydrogenation catalyst or catalyst pores due to high impurity content. Blockage and rapid deactivation, and impurities may block the bed layer to cause a rapid increase in pressure drop, resulting in poor working conditions of the re...

AI Technical Summary

Problems solved by technology

At present, the most commonly used in the hydrogenation process is the downflow fixed bed reactor, that is, the trickle bed reactor, but heavy oil products such as residual oil and coal liquefied oil are prone to poisoning of the hydrogenation catalyst or catalyst pores due to high impurity content. Blockage and rapid deactivation, and impurities may block the bed layer, causing a rapid increase in pressure drop, resulting in poor reactor conditions, or even failure to operate normally

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