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Suspension bed hydrogenation process for processing heavy oil

A suspended bed, heavy oil technology, applied in hydrotreating process, treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems of uneven mixing, insufficient reaction, unsatisfactory hydrogenation product separation effect, etc., and achieve good hydrogenation catalysis. Activity, the effect of improving conversion rate and light oil yield

Active Publication Date: 2018-07-10
BEIJING HUASHI UNITED ENERGY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of uneven mixing of catalyst and raw oil, insufficient reaction and unsatisfactory separation effect of hydrogenation products existing in the existing suspension bed hydrogenation process, and further provide a catalyst and raw material Suspension bed hydrogenation process for treating heavy oil with uniform oil mixing, sufficient reaction, good separation effect, high yield and quality of light oil, high yield and quality of asphalt, energy saving and emission reduction

Method used

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  • Suspension bed hydrogenation process for processing heavy oil
  • Suspension bed hydrogenation process for processing heavy oil
  • Suspension bed hydrogenation process for processing heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Such as figure 1 As shown, the suspended bed hydrogenation process for heavy oil provided in this embodiment includes the following steps:

[0077] (1) select residual oil as the raw material oil of this process, get half of the residual oil and mix it with the suspension bed hydrocracking catalyst to form a mixture, and carry out primary shear and secondary shear to the mixture successively, Obtain catalyst slurry;

[0078] (2) Mix the catalyst slurry with the remaining residual oil and hydrogen and send it into the suspension bed hydrogenation reactor, and control the operating pressure in the suspension bed hydrogenation reactor to 18MPa, the temperature to 425°C, and the volume of hydrogen oil The ratio is 1000 for hydrocracking reaction;

[0079] (3) After step (2) reacted for 1.5h, the obtained suspension bed hydrogenation product was subjected to thermal high-pressure separation at 18MPa and 400°C, and hot high-separation gas and hot high-separation oil were co...

Embodiment 2

[0084] Such as figure 1 As shown, the suspended bed hydrogenation process for heavy oil provided in this embodiment includes the following steps:

[0085] (1) Purification treatment of coal tar

[0086] Air is introduced into the coal tar so that the particle size is 0.2mm and the specific surface area is 50m 2 / g of kaolin powder and coal tar are back-mixed and contacted at a mass ratio of 0.1:1 and adsorbed at 50°C and 0.5MPa. The air flow required for each 1kg of kaolin powder is 0.5m 3 / s; After the adsorption is completed, settle and stratify, collect the upper layer material, and then perform solid-liquid separation on the upper layer material, and the collected liquid phase is the purified coal tar;

[0087] Compared with the coal tar before the purification treatment, the residual carbon value in the coal tar after the purification of this embodiment is reduced to 0.1%, which is reduced by 79%; the content of asphaltene is reduced by 76%; the colloid is reduced by 80...

Embodiment 3

[0095] Such as figure 1 As shown, the suspended bed hydrogenation process for heavy oil provided in this embodiment includes the following steps:

[0096] (1) Preparation of catalyst slurry

[0097] Select coal tar as the raw material oil of this process, please refer to Figure 5 Take half the amount of coal tar and inject it into the solvent buffer tank 51, after being buffered by the solvent buffer tank 51 and pressurized by the solvent booster pump 58, it enters the Venturi tube 56, and at the same time, the suspended bed hydrocracking catalyst enters from the solid catalyst The material system 55 also enters into the Venturi tube 56, and the coal tar and the catalyst are initially mixed in the Venturi tube 56 and then enter the slurry preparation tank 52, and form a primary slurry under the agitation of the stirring device 54, which is prepared in the tank. The temperature is 90°C, and the pressure in the preparation tank is normal; then the first-stage slurry is sheare...

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Abstract

The invention provides a suspension bed hydrogenation process for processing heavy oil. In the process, part of raw oil and a suspension bed hydrocracking catalyst are mixed to form a mixture, the mixture is then subjected to primary shearing and secondary shearing sequentially, and thus high-dispersion mixing of the catalyst and the raw oil can be carried out to obtain catalyst slurry, hydrogenation catalytic activity of the catalyst works well to facilitate increase of raw oil conversion rate and light oil yield; the catalyst slurry, the residual raw oil and hydrogen are mixed and then sentinto a suspension bed hydrogenation reactor, suspension bed hydrogenation products are obtained by controlling suspension bed hydrogenation conditions; a reasonable separating process is utilized according to composition and property of the product, and thus, hydrogenation load of a fixed bed is reduced greatly, yield and quality of light oil are improved to the utmost extent, and above all, service life of the fixed bed catalyst can be prolonged effectively, and energy saving and emission reducing of the whole process are facilitated.

Description

technical field [0001] The invention relates to the technical field of coal and petrochemical industry, in particular to a suspension bed hydrogenation process for treating heavy oil. Background technique [0002] In recent years, with the increasing shortage of petroleum resources in the world, the trend of heavy and inferior crude oil becoming more and more serious, the rapid decrease in market demand for heavy fuel oil and the continuous and rapid growth of demand for light fuel oil, the heavy and inferior Oil deep processing technology has become the focus and difficulty in the development of oil refining industry. In addition, my country's basic national conditions of poor oil and rich coal, and some petrochemical products can also be obtained from coal gasification, dry distillation and other products, so the use of advanced coal conversion technology to produce light oil and chemical products is not only beneficial to the chemical industry The adjustment of industrial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14
CPCC10G67/14C10G47/30C10G67/02
Inventor 李林林科
Owner BEIJING HUASHI UNITED ENERGY TECH & DEV
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