A preparation method of catalytic cracking metal passivator and metal passivator prepared by the method

A metal deactivator and catalytic cracking technology, which is applied in catalytic cracking, catalyst protection, chemical instruments and methods, etc., can solve the problems of complex process, time and energy consumption, poor product stability, etc., and achieve simple preparation process and economic benefits Significant, low-cost effects

Active Publication Date: 2020-09-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of catalytic cracking metal passivator and the catalytic cracking metal passivator prepared by the method, so as to solve the problems of complex process, time and energy consumption and poor product stability of traditional preparation method

Method used

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  • A preparation method of catalytic cracking metal passivator and metal passivator prepared by the method

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preparation example Construction

[0017] The first aspect of the present invention: provide a kind of preparation method of catalytic cracking metal deactivator, this method comprises: a, antimony trioxide, hydroxycarboxylic acid, boron-containing compound, bismuth-containing compound, pH adjuster and water are mixed, React for 30-60 minutes at a temperature of 20-90°C to obtain the first product, wherein the mass ratio of antimony trioxide, hydroxycarboxylic acid, boron-containing compound, bismuth-containing compound, pH regulator and water Is 1: (2-4): (0.5-1.2): (0.4-2): (0.6-1.2): (2-10); b, the oxidant is mixed with the first product obtained in step a, and the The catalytic cracking metal passivator is obtained by reacting in a closed container at a temperature of 100-150° C. for 1-2 hours, wherein the mass ratio of the oxidant to antimony trioxide is (0.4-1.1):1. It should be noted that, since the catalytic cracking metal passivator prepared by the method of the present invention is generally used in t...

Embodiment 1

[0028] Add 1.8kg diethanolamine, 6kg tartaric acid, 3kg antimony trioxide, 1.2kg bismuth oxide, 1.5kg boric acid and 30kg deionized water into the reaction kettle, stir at room temperature for 30 minutes, add 2kg 30% by mass of hydrogen peroxide dropwise, and finish adding Finally, the reaction kettle was sealed and heated to 100° C. for 1 hour, and then cooled out of the kettle to obtain a catalytic cracking metal passivator. The product was clear and transparent, and the pH value was 7.1.

Embodiment 2

[0030] Add 2.4kg ethanolamine, 8kg citric acid, 2kg antimony trioxide, 4kg bismuth hydroxide, 2.4kg boric acid and 4kg deionized water into the reaction kettle, raise the temperature to 90°C and stir for 30 minutes, then add 2.2kg benzyl peroxide dropwise Acyl, after the addition, the reaction vessel was closed and heated to 150°C for 1.5 hours, and then cooled out of the vessel to obtain a catalytic cracking metal passivator. The product was clear and transparent, with a pH value of 8.0.

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Abstract

The invention discloses a preparation method for a metal deactivator applied to catalytic cracking and the metal deactivator prepared by using the same. The preparation method comprises the followingsteps: a, mixing antimony trioxide, hydroxycarboxylic acid, a boron-containing compound, a bismuth-containing compound, a pH value conditioning agent and water and carrying out a reaction at a temperature of 20 to 90 DEG C for 30 to 60 min so as to obtain a first product; and b, mixing an oxidizing agent with the first product obtained in the step a, and carrying out a reaction in an enclosed container at a temperature of 100 to 150 DEG C for 1 to 2 h so as to obtain the metal deactivator applied to catalytic cracking. The preparation method for the metal deactivator applied to catalytic cracking has the advantages of simple process, short reaction time, low cost and reduction in energy consumption, and produces substantial economic benefits. The metal deactivator prepared by using the method has a good nickel and vanadium passivation function when applied to a catalytic cracking reaction and can obviously increasing the yield of light oil and reducing the proportions of coke and dry gas in a product.

Description

technical field [0001] The invention relates to a preparation method of a catalytic cracking metal passivator and a catalytic cracking metal passivator prepared by the method. Background technique [0002] During the catalytic cracking process of heavy oil, heavy metals (such as Ni, Fe, V, Cu, etc.) in raw oil are continuously deposited on the surface of the catalyst, causing catalyst pollution. With the continuous increase of its deposition amount, it will adversely affect the activity and selectivity of the catalyst, so that the yield of gasoline and diesel will decrease, and the yield of hydrogen and coke will increase. Adding metal deactivators to catalytic cracking raw oil is the most economical and effective way to suppress the pollution of heavy metals to catalytic cracking catalysts. Inorganic antimony salts were used as metal passivators in the early days, and now organic antimony compounds are mostly used as passivating agents, and obvious passivation effects have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J33/00C10G11/00
CPCB01J33/00C10G11/00C10G2300/202
Inventor 段庆华陈政孙洪伟苏朔
Owner CHINA PETROLEUM & CHEM CORP
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