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Preparation method of organic acid molybdenum oil-soluble catalyst for slurry reactor hydrogenation

An organic acid and catalyst technology, applied in the field of hydrocracking catalyst preparation, can solve the problems of difficult utilization and handling, low dispersion, easy deactivation, etc., and achieve the effect of good oil solubility, uniform dispersion and reasonable price

Pending Publication Date: 2022-08-09
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, the solid powder catalyst has the following obvious disadvantages: first, the tail oil contains a large number of solid particles, which are difficult to use and handle; second, the dispersion is low and it is easy to deactivate

Method used

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  • Preparation method of organic acid molybdenum oil-soluble catalyst for slurry reactor hydrogenation
  • Preparation method of organic acid molybdenum oil-soluble catalyst for slurry reactor hydrogenation

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preparation example Construction

[0025] The present invention provides a method for preparing an organic acid molybdenum oil-soluble catalyst for slurry bed hydrogenation, and the method for preparing the organic acid molybdenum oil-soluble catalyst comprises:

[0026] (1) adding the short carbon chain organic acid and the molybdenum source catalyst into the flask according to the molar ratio of 3~5:1, and adding the solvent of the preset molar ratio to react to obtain the short carbon chain organic acid reaction system, wherein the reaction temperature is 50~95℃, and the reaction time is 1~5h;

[0027] (2) According to the molar ratio of the long carbon chain organic acid and the short carbon chain organic acid being 1:1~5, the long carbon chain organic acid is added dropwise to the prepared short carbon chain organic acid reaction system dropwise , wherein, the dripping rate is 1~5ml / min, the reaction temperature of the dripping process is 50~95 ℃, and the temperature is raised to 180~250 ℃ after the drippi...

Embodiment 1

[0036] A method for preparing an organic acid molybdenum oil-soluble catalyst for slurry bed hydrogenation, wherein the active component of the organic acid molybdenum oil-soluble catalyst prepared by the preparation method is molybdenum, and the weight content of molybdenum in the organic acid molybdenum oil-soluble catalyst is: 10.52%, its preparation method is as follows:

[0037] (1) Weigh 13.42g of citric acid and add 50mL of distilled water, simultaneously weigh 3.5g of molybdenum trioxide, mix the two fully and pour into a three-necked flask, and stir and react at a constant temperature for 2h at 70°C to obtain a short carbon chain citric acid reaction system;

[0038] (2) Weigh 25.12g of octanoic acid, add dropwise to the short carbon chain citric acid reaction system in step (1), the dropping rate is 3ml / min, and vigorously stir, after the dropwise addition is completed, the temperature is raised to 200°C, and the reaction is continued for 2h to obtain the oil phase f...

Embodiment 2

[0041] A method for preparing an organic acid molybdenum oil-soluble catalyst for slurry bed hydrogenation, wherein the active component of the organic acid molybdenum oil-soluble catalyst prepared by the preparation method is molybdenum, and the weight content of molybdenum in the organic acid molybdenum oil-soluble catalyst is: 4.32%, its preparation method is as follows:

[0042] (1) Weigh 18.42g of oxalic acid and add 50mL of distilled water, simultaneously weigh 3.5g of molybdenum trioxide, mix the two fully and pour into a three-necked flask, and stir and react at a constant temperature for 2h at 70°C to obtain a short carbon chain oxalic acid reaction system;

[0043] (2) take by weighing 15.12g stearic acid, add dropwise the short carbon chain oxalic acid reaction system in step (1), the rate of addition is 3ml / min, and vigorously stir, be warming up to 200 ℃ after the completion of the dropwise addition, continue the reaction 2h to obtain the oil phase part;

[0044]...

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Abstract

The invention discloses a preparation method of an organic acid molybdenum oil-soluble catalyst for slurry reactor hydrogenation, and belongs to the technical field of hydrocracking catalyst preparation, long-carbon-chain organic acid is used as an organic ligand, a molybdenum source is used as a catalytic active metal, the preparation method is simple, the raw material source is wide, the price is reasonable, and the cost is low. The prepared organic acid molybdenum oil-soluble catalyst not only is good in dispersity and high in stability, but also has good oil solubility, can be well dissolved in inferior oil products, is uniformly dispersed and is in full contact with a heavy oil system and hydrogen during reaction, and edge sites of the vulcanized catalyst have high catalytic hydrogenation activity and coke inhibition activity.

Description

technical field [0001] The invention relates to the technical field of hydrocracking catalyst preparation, in particular to a preparation method of an organic acid molybdenum oil-soluble catalyst for slurry bed hydrogenation. Background technique [0002] Heavy oil slurry bed hydrogenation technology is a high-temperature and high-pressure reaction under the condition of catalyst and hydrogen. This technology has two technical characteristics of hydrogenation and thermal processing. The catalyst is the core of slurry bed hydrogenation technology. It can effectively reduce the severity of reaction conditions, improve the utilization rate of activated hydrogen and the quality of liquid products, and improve product quality. It is currently a hot research issue in slurry bed hydrogenation of heavy oil. . The development of heavy oil hydrogenation has mainly gone through two stages: solid supported catalysts and dispersed catalysts. Among them, dispersed catalysts include water...

Claims

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Application Information

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IPC IPC(8): B01J31/22C10G47/02C10G47/30
CPCB01J31/2213C10G47/02C10G47/30B01J2531/64B01J2531/0213Y02P20/52
Inventor 杜峰王鹏宇李传张世博邓文安杨志强宋正浩李晶罗辉李庶峰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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