Preparation method for hydrotreatment catalyst

A technology of hydroprocessing and catalyst, which is applied in the direction of physical/chemical process catalyst, catalyst carrier, chemical instrument and method, etc. It can solve the problems of unfavorable heavy oil hydrodesulfurization and hydroconversion reaction, small specific surface area, etc., and achieve cost Low, simple process, large pore volume effect

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the alumina carrier prepared by this gelling method has a large average pore size, it has a small specific surface area, and using it as a catalyst carrier is not conducive to heavy oil hydrodesulfurization and hydroconversion reactions.

Method used

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  • Preparation method for hydrotreatment catalyst
  • Preparation method for hydrotreatment catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of alumina dry glue

[0035] Preparation of sodium metaaluminate solution concentration is 140gAl 2 o 3 / L, a total of 2.5L; the concentration of aluminum sulfate solution is 40gAl 2 o 3 / L, a total of 5.0L; in the mixed solution of ethanol and hydroxypropyl methylcellulose (HPMC), the concentration of ethanol is 1.0g / L, and the concentration of HPMC is 1.0g / L, a total of 1.0L.

[0036] Pre-add bottom water to the reaction tank, set the temperature of the reaction tank to 75°C, and start stirring. During the process of adding the prepared sodium metaaluminate solution and aluminum sulfate solution into the reaction tank in parallel at a certain flow rate, a mixed solution of ethanol and hydroxypropylmethylcellulose (HPMC) is added in parallel to adjust the pH value to 6.5. After the materials were added, an alkaline solution was added to the obtained product to adjust the pH value to 8.8, the reaction temperature was 90° C., and the reaction time was...

Embodiment 2

[0041] Other conditions are the same as embodiment 1, just replace ethanol with isopropanol, the isopropanol concentration of preparation is changed into 35g / L, HPMC is replaced with MC, the MC concentration of preparation is changed into 20g / L, prepares A-2 carrier and Catalyst AC-2.

Embodiment 3

[0043] Other conditions are the same as in Example 1, except that the concentration of ethanol is changed to 55g / L, and the concentration of HPMC is changed to 50g / L to prepare A-3 carrier and catalyst AC-3.

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Abstract

The invention discloses a preparation method for a hydrotreatment catalyst. The method comprises the following steps: in the process of gel formation by cocurrent flow of an alkaline solution containing aluminum and an acidic solution containing aluminum, adding an additive and an organic template agent in the manner of cocurrent flow at the same time, controlling proper reaction conditions and carrying out gel formation; then adding an alkaline solution to adjust a pH value; then carrying out filtering, washing and drying so as to obtain alumina dry gel; carrying out molding, drying and calcining so as to obtain an alumina carrier; and loading active metal components. The catalyst prepared by using the method has the advantages of a large specific surface area, a great pore volume and a reasonable pore structure and is particularly applicable as a catalyst for hydrodesulfurization or hydro-conversion of residual oil.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation treatment catalyst, especially a preparation method of a hydrogenation treatment catalyst suitable for treating inferior residue oil. Background technique [0002] With the worsening trend of crude oil and the increasing market demand for high-quality light fuel oil, the process of lightening and cleaning heavy oil will increase the economic benefits of refineries. As one of the most effective technical solutions to improve the quality of inferior heavy oil and provide high-quality raw oil for downstream units, hydroprocessing technology has attracted extensive attention. [0003] Residual oil (atmospheric residual oil, vacuum residual oil) is the heaviest part remaining after primary processing (atmospheric and vacuum distillation) of crude oil. Compared with light distillate oil, residual oil has complex composition, large average molecular weight, high viscosity, high density, lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J35/10B01J32/00B01J21/04C10G45/08
Inventor 张成刘立军王永林杨刚袁胜华
Owner CHINA PETROLEUM & CHEM CORP
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