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A Suspension Bed Hydrogenation Process for Treating Heavy Oil

A suspended bed and heavy oil technology, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of insufficient reaction, uneven mixing, unsatisfactory separation effect of hydrogenation products, etc., to improve the conversion rate and The effect of light oil yield and good hydrogenation catalytic activity

Active Publication Date: 2020-03-17
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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  • A Suspension Bed Hydrogenation Process for Treating Heavy Oil
  • A Suspension Bed Hydrogenation Process for Treating Heavy Oil
  • A Suspension Bed Hydrogenation Process for Treating Heavy Oil

Examples

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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 suspended bed hydrogenation process for treating heavy oil. The process forms a mixture by mixing part of the feed oil with a suspended bed hydrocracking catalyst, and then sequentially performs primary shearing and secondary shearing on the mixture. This can achieve highly dispersed mixing of the catalyst and the feed oil to obtain a catalyst slurry, ensuring that the catalyst can better exert its hydrogenation catalytic activity, which is beneficial to improving the conversion rate of the feed oil and the yield of light oil; and then the catalyst slurry is It is mixed with the remaining feed oil and hydrogen and sent into the suspended bed hydrogenation reactor. The suspended bed hydrogenation conditions are controlled to obtain the suspended bed hydrogenation product, and a reasonable separation process is adopted according to its composition and properties, which not only greatly reduces the fixed bed The hydrogenation load, more importantly, maximizes the yield and quality of light oil, and can also effectively extend the service life of the fixed bed catalyst, which is beneficial to energy saving and emission reduction of the entire process.

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 Patents(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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