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Water-soluble catalytic cracking metal passivator and preparation method thereof

A metal deactivator and catalytic cracking technology, which is applied in catalytic cracking, catalyst protection, chemical instruments and methods, etc., can solve problems such as long reaction time, environmental pollution, equipment corrosion, etc., and achieve short reaction time, convenient use, and high quality stable effect

Active Publication Date: 2012-06-27
SHANDONG CHAMBROAD HLDG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The metal deactivator used in the early stage is some antimony-containing oil-soluble organic compounds, such as CN87106236, US4694324, and the most common one is antimony dihydroxy dithiophosphate. When this type of compound is used, it must be dissolved in a solvent first, and then At the same time, it has a pungent smell and pollutes the environment
Patents US4488998 and US5389233 disclose metal passivators whose main components are antimony carboxylate or antimony trihydroxyethyl mercaptide and their preparation. This agent is soluble in hot oil, has poor high temperature resistance, and has certain corrosion on equipment
Patents CN99121443.9, US4599772, etc. disclose some water-soluble antimony-containing passivators and their preparation. These passivators have the advantages of convenient use and removal, safe storage and transportation, but the preparation temperature is high and the reaction time is long.

Method used

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  • Water-soluble catalytic cracking metal passivator and preparation method thereof

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Effect test

Embodiment 1

[0017] A water-soluble catalytic cracking metal passivation agent, including nickel passivation agent and vanadium passivation agent, the nickel passivation agent is antimony pentoxide hydrosol, and the vanadium passivation agent is organic acid salt aqueous solution of lanthanum or cerium; the content of antimony is 30% , the content of lanthanum is 0%, the balance of water.

[0018] The specific preparation steps of this passivator include:

[0019] Preparation of nickel passivation agent Under normal pressure, put 30g of antimony trioxide in 20g of 85% triethanolamine aqueous solution, add 30g of 30% hydrogen peroxide under constant stirring, and react at 80°C until the product becomes a transparent and uniform liquid.

Embodiment 2

[0021] A water-soluble catalytic cracking metal passivator, including nickel passivation agent and vanadium passivation agent, nickel passivation agent is antimony pentoxide hydrosol, and vanadium passivation agent is organic acid salt aqueous solution of lanthanum or cerium; the content of antimony is 22% , the content of cerium is 1%, the balance of water.

[0022] The specific preparation steps of this passivator include:

[0023] (1) Preparation of passivating nickel agent Under normal pressure, place 30g of antimony trioxide in 18g of 85% triethanolamine aqueous solution, add 45g of 30% hydrogen peroxide under constant stirring, and react at 150°C until the product is transparent homogeneous liquid;

[0024] (2) Preparation of vanadium passivation agent Under normal pressure, 153g mass fraction is 30% citric acid solution and 20g cerium carbonate water bath heating to 60 ℃ reaction;

[0025] (3) Compounding of nickel passivating agent and vanadium passivating agent Mix ...

Embodiment 3

[0027] A water-soluble catalytic cracking metal passivating agent, including nickel passivating agent and vanadium passivating agent, the nickel passivating agent is antimony pentoxide hydrosol, and the vanadium passivating agent is organic acid salt aqueous solution of lanthanum or cerium; the content of antimony is 17% , the content of lanthanum is 4%, the balance of water.

[0028] The specific preparation steps of this passivator include:

[0029] (1) Preparation of nickel passivation agent Under normal pressure, place 30g of antimony trioxide in 35g of 85% triethanolamine aqueous solution, add 40g of 30% hydrogen peroxide under constant stirring, and react at 130°C until the product is transparent homogeneous liquid;

[0030] (2) Preparation of vanadium passivation agent Under normal pressure, 89g of acetic acid solution with a mass fraction of 25% was heated to 100°C in a water bath with 20g of lanthanum oxide to react;

[0031] (3) Compounding of nickel passivating ag...

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Abstract

The invention relates to a catalytic cracking metal passivator and a preparation method thereof, in particular to a water-soluble catalytic cracking metal passivator and a preparation method thereof. The metal passivator comprises a nickel passivator and a vanadium passivator, wherein the nickle passivator is antimony pentoxide hydrosol; the vanadium passivator is an organic acid salt aqueous solution of lanthanum or cerium; and in the passivator, the antimony content is 8-30 percent, the lanthanum or cerium content is 0-7 percent, and the rest is water. In the invention, a preparation process of hydrogen peroxide is adopted, so that reaction time is short, external heating is not required, energy is saved, consumption is lowered, and the prepared passivator is convenient to use, has stable property, and can be dissolved mutually and infinitely with water.

Description

technical field [0001] The invention relates to a catalytic cracking metal passivator and a preparation method thereof, in particular to a water-soluble catalytic cracking metal passivator and a preparation method thereof. Background technique [0002] As we all know, in the process of catalytic cracking, especially in the process of catalytic cracking with heavy oil as raw material, heavy metals contained in the raw oil, such as nickel, vanadium, copper, iron and other heavy metals, will deposit on the surface of the catalyst, causing catalyst poisoning, deactivation and The selectivity decreases, so that the yield of light oil decreases, and the yield of hydrogen and coke increases. For the metal pollution of catalytic cracking catalysts, in addition to demetallization pretreatment of raw materials and selection of catalysts with strong metal resistance, the industry can also improve the properties of catalysts by increasing the replacement rate of catalysts, and use passi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J33/00C10G11/02
Inventor 张红娟牟庆平栾波张建林高洪奎李艳芳
Owner SHANDONG CHAMBROAD HLDG GRP CO LTD
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