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Preparation method for hydrotreatment catalyst

A hydrogenation treatment and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as unfavorable heavy oil hydrodesulfurization, hydroconversion reaction, small specific surface area, etc. Achieve the effect of low cost, simple process and stable performance

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

[0035] (1) Preparation of alumina dry glue

[0036] 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 sodium lauryl sulfate and hydroxypropyl methylcellulose (HPMC), the concentration of sodium lauryl sulfate is 1.0g / L, and the concentration of HPMC is 1.0g / L, the total 1.0L.

[0037] Pre-add bottom water to the reaction tank, set the temperature of the reaction tank to 75°C, and start stirring. In the process of adding the prepared sodium metaaluminate solution and aluminum sulfate solution into the reaction tank in parallel at a certain flow rate, at the same time, add the mixed solution of sodium lauryl sulfate and hydroxypropyl methylcellulose (HPMC) in parallel to adjust The pH is 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 ...

Embodiment 2

[0042] Other conditions are the same as embodiment 1, just sodium lauryl sulfate is replaced by sodium octadecyl sulfate, the sodium octadecyl sulfate concentration of preparation is changed into 30g / L, HPMC is replaced by MC, and the MC concentration of preparation changes into 20g / L, A-2 carrier and catalyst AC-2 were prepared.

Embodiment 3

[0044] Other conditions are the same as in Example 1, except that the concentration of sodium lauryl sulfate is changed to 50g / 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 concurrent 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 concurrent flow at the same time, controlling proper reaction conditions and carrying out gel formation, wherein the organic template agent is cellulose ethers; then adding an alkaline solution to adjust a pH value; then carrying out filtering, washing and drying so as to obtain the 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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IPC IPC(8): B01J27/19C10G45/08
Inventor 刘立军张成王永林杨刚袁胜华
Owner CHINA PETROLEUM & CHEM CORP
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