Preparation method for metal deactivator applied to catalytic cracking, and metal deactivator prepared by using same

A metal deactivator and catalytic cracking technology, applied in catalyst protection, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as poor product stability, complicated process, time-consuming and energy-consuming, and achieve low cost, The preparation process is simple and the economic benefit is remarkable

Active Publication Date: 2018-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Preparation method for metal deactivator applied to catalytic cracking, and metal deactivator prepared by using same
  • Preparation method for metal deactivator applied to catalytic cracking, and metal deactivator prepared by using same

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preparation example Construction

[0016] The first aspect of the present invention: provide a kind of preparation method of catalytic cracking metal deactivator, this method comprises: a, antimony trioxide, hydroxy carboxylic acid, rare earth salt, pH adjusting agent and water are mixed, at a temperature of 20- The first product is obtained by reacting at 90°C for 30-60 minutes, wherein the mass ratio of antimony trioxide, hydroxycarboxylic acid, rare earth salt, pH regulator and water is 1:(2-4):( 0.1-0.6): (0.6-1.2): (2-10); b. Mix the oxidant with the first product obtained in step a, and react in a closed container at a temperature of 100-150°C 1- After 2 hours, a catalytic cracking metal passivator was obtained, wherein the mass ratio of the oxidant to antimony trioxide was (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 the form of an aqueous solution after adding water for dissolution, in the prepara...

Embodiment 1

[0027] Add 3kg of ethanolamine, 10kg of tartaric acid, 5kg of antimony trioxide, 0.5kg of lanthanum carbonate and 50kg of deionized water into the reactor, stir at room temperature for 30 minutes, then add 2kg of 30% by mass hydrogen peroxide dropwise, and then close the reactor and heat it React at 100°C for 1 hour, then cool out of the kettle to obtain a catalytic cracking metal passivator, the product is clear and transparent, and the pH value is 7.0.

Embodiment 2

[0029] Add 3.6kg of triethanolamine, 12kg of citric acid, 3kg of antimony trioxide, 1.8kg of lanthanum nitrate and 6kg of deionized water into the reaction kettle, stir at room temperature, raise the temperature to 90°C and stir for 60 minutes, then add the total amount of After adding 2kg of benzoyl peroxide, close the reactor and heat it to 150°C for 1 hour, then cool it out of the reactor to obtain a catalytic cracking metal passivator. The product is clear and transparent, and the pH value is 7.8.

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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 rare-earth salt, 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 DEGC 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 Applications(China)
IPC IPC(8): B01J33/00
CPCB01J33/00
Inventor 陈政段庆华孙洪伟苏朔
Owner CHINA PETROLEUM & CHEM CORP
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