Catalytic cracking double-metal deactivator

A catalytic cracking and bimetallic technology, applied in catalytic cracking, catalyst protection, cracking, etc., can solve the problems of high toxicity, poor compounding performance, increase the amount of CO combustion aid, etc., achieve high effective metal content and increase regeneration yield , the effect of improving the recovery rate

Inactive Publication Date: 2013-03-20
江苏汉光实业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multifunctional passivator currently used in industry not only has high toxicity and poor compounding performance, but also increases the amount of CO combustion accelerant
[0004] CN102513163A reports a water-soluble catalytic cracking metal passivator and a preparation method thereof. In the method, antimony pentoxide hydrosol is used as a passivating nickel agent, and an aqueous solution of an organic acid salt of lanthanum or cerium is used as a passivating agent for vanadium. Vanadium passivating agent and vanadium passivating agent are compounded and used, because the preparation of passivating nickel antimony pentoxide hydrosol uses hydrogen peroxide and alcohol amine, and hydrogen peroxide encounters alcohol amine violently exothermic, therefore, the reaction process is not easy to control, and it is easy to cause an explosion. Has a certain degree of danger

Method used

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  • Catalytic cracking double-metal deactivator

Examples

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Effect test

Embodiment 1

[0018] A catalytic cracking bimetallic passivator, wherein the content of antimony in the antimony single agent is 21%, the content of cerium in the cerium single agent is 8.8%, and the rest is water. The specific preparation steps include:

[0019] (1) Preparation of antimony single agent: put 30g of water, 30g of tartaric acid and 30g of antimony trioxide into the reaction kettle in turn and stir, add 10g of monoethanolamine to prevent bumping, after the dropwise addition, control the temperature at 75°C, and then heat to boiling , reflux for 22 minutes, and discharge after cooling to form a single agent of antimony;

[0020] (2) Preparation of cerium single agent: put 30g of water, 21g of tartaric acid and 19g of monoethanolamine into the reactor and stir for 30min, add 30g of rare earth powder to prevent carbon dioxide gas from overflowing the reactor, after the dropwise addition, stir for 30min and heat up to 102°C Boil, reflux for 1 hour, and discharge after cooling to f...

Embodiment 2

[0023] A catalytic cracking bimetal passivator, wherein the antimony content in the antimony single agent is 19%, the cerium content in the cerium single agent is 6.4%, and the rest is water. The specific preparation steps include:

[0024] (1) Preparation of antimony single agent: put 30g of water, 27.5g of tartaric acid and 31g of antimony trioxide into the reaction kettle in order to stir, add 11.5g of monoethanolamine to prevent bumping, dropwise, control the temperature at 75°C, and then heat Bring to boiling, reflux for 22 minutes, discharge after cooling, and serve as antimony single agent;

[0025] (2) Preparation of cerium single agent: put 30g of water, 22g of tartaric acid and 18g of monoethanolamine into the reactor and stir for 30min, add 30g of rare earth powder to prevent carbon dioxide gas from overflowing the reactor, after the dropwise addition, stir for 30min and heat up to 102°C Boil, reflux for 1 hour, and discharge after cooling to form a cerium single do...

Embodiment 3

[0028] A catalytic cracking bimetallic passivator, wherein the content of antimony in the antimony single agent is 18%, the content of cerium in the cerium single agent is 8%, and the rest is water. The specific preparation steps include:

[0029] (1) Preparation of antimony single agent: put 30g of water, 29.8g of tartaric acid and 30g of antimony trioxide into the reaction kettle in order to stir, add 10.2g of monoethanolamine to prevent bumping, after the dropwise addition, control the temperature at 75°C, and then heat Bring to boiling, reflux for 22 minutes, discharge after cooling, and serve as antimony single agent;

[0030] (2) Preparation of cerium single agent: put 30g of water, 20g of tartaric acid and 18g of monoethanolamine into the reactor and stir for 30min, add 32g of rare earth powder to prevent carbon dioxide gas from overflowing the reactor, after the dropwise addition, stir for 30min and heat up to 102°C Boil, reflux for 1 hour, and discharge after cooling ...

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Abstract

The invention discloses a catalytic cracking double-metal deactivator. The catalytic cracking double-metal deactivator mainly comprises an antimony single agent and a cerium single agent and is characterized in that the content of antimony in the antimony single agent is 17-21%, the content of cerium in the cerium single agent is 6-9%, and the rest is water. A preparation method of the catalytic cracking double-metal deactivator comprises the following steps of: (1) preparation of the antimony single agent: sequentially adding water, tartaric acid and antimony oxide to a reaction kettle for reaction, adding monoethanolamine to prevent blasting boiling, heating till boiling, refluxing for 20-40 min, and emptying after cooling, thus obtaining the antimony single agent; and (2) preparation of the cerium single agent: adding water, tartaric acid and monoethanolamine together to a reaction kettle for reaction, adding rare earth powder to prevent carbon dioxide from generating and overflowing from the reaction kettle, stirring and heating to boil at 102 DEG C after completing dropwise addition, refluxing for 1-2h, and emptying after cooling, thus obtaining the cerium single agent; and (3) compounding of the antimony single agent and the cerium single agent: uniformly mixing and stirring the antimony single agent and the cerium single agent to obtain the double-metal deactivator.

Description

technical field [0001] The invention relates to a catalytic cracking metal passivator, in particular to a catalytic cracking bimetal passivator. Background technique [0002] In the process of catalytic cracking, especially in the process of catalytic cracking with heavy oil as raw material, heavy metals contained in 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 selectivity. As a result, the yield of light oil decreased, and the yield of hydrogen and coke increased. 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 passivators to inhibit The poisonous effect of the metal in the raw material on the catalyst. Among them, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J33/00C10G11/02
Inventor 顾法明
Owner 江苏汉光实业股份有限公司
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