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

A hydrogenation device and slurry bed technology, which is applied in the field of slurry bed reaction devices, can solve the problems of hydrogenation catalyst poisoning, catalyst pore blockage, and poor reactor working conditions, and achieves high conversion rate of heavy oil and long operation period. , the effect of improving compatibility

Inactive Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
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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 c

Method used

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

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[0041] Example 1

[0042] Use as attached figure 1 In the two-stage heavy oil slurry-bed hydrogenation plant shown, the diameter ratio of the riser and the downcomer of the first and second slurry-bed reactors is 2:1, and the diameter ratio of the downcomer and the upper connecting pipe is 4. :1. The connecting position of the rising pipe and the descending pipe is at the interface of the upper connecting pipe and the rising pipe, which is 3m from the top of the rising pipe, and the interface of the lower connecting pipe and the rising pipe is 2.5m from the bottom of the rising pipe.

[0043] Preparation method of hydrocracking catalyst: metal precursor ammonium molybdate ((NH 4 )6Mo 7 O 24 ·4H 2 O), nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) and vanadium oxide (V 2 O 5 The mass ratio of) is 3.3:4.16:1. Add it to water and stir evenly. Then add 3.5 times the total mass of the metal precursor with acid-treated activated carbon and 0.34 times the vulcanizing agent (sublimation sulfur) in...

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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...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 唐晓津张占柱胡立峰朱振兴侯栓弟王子军
Owner CHINA PETROLEUM & CHEM CORP
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