Catalytic cracking multifunctional strengthened additive

Abstract

The invention provides multifunctional catalytic cracking strengthening additive which comprises a rare earth organic compound, heteropoly acid (and salt thereof), chemical inhibitor, solvent, and the like and has the functions of resisting oxidation and preventing from scorch, dispersing, increasing the acid center, passivating the metal, and the like. When being added into a catalytic cracking lifting pipe reactor, the multifunctional catalytic cracking strengthening additive can inhibit the generation of secondary reaction such as thermal cracking reaction, dehydrogenation condensation reaction, and the like, reduces the generation of side products of net gas, coke, hydrogen, and the like, and improves the yield coefficients of products with high added values, such as liquid gas (especially propylene), gasoline and diesel. The catalytic cracking strengthening additive has the function of metal deactivator and can replace the metal deactivator, therefore, the metal deactivator needs not to be added after the catalytic cracking strengthening additive is added. The invention has the function of resisting oxidation and preventing from scorch, can inhibit a lifting pipe and a settling vessel from being coked and prevent a reaction system from scale deposit, thereby being multifunctional catalytic cracking strengthening additive.

Description

technical field

[0001] The invention belongs to the field of oil refining yield-increasing agents, and relates to a catalytic cracking multifunctional enhanced yield-increasing agent. Background technique

[0002] Catalytic cracking is one of the petroleum refining processes. It is a process in which heavy oil undergoes a cracking reaction under the action of heat and a catalyst, and is converted into cracked gas, gasoline and diesel oil. The raw material is heavy distillate obtained from crude oil distillation (or other petroleum refining process); or heavy distillate mixed with a small amount of residual oil, deasphalted residual oil after solvent deasphalting; or all use atmospheric residual oil or reduced Pressure residue. Catalytic cracking is one of the main processes used by petroleum refineries to produce gasoline from heavy oil.

[0003] With the increasingly serious trend of heavy and inferior quality of catalytic cracking raw oil, this will inevitably increase t...

Examples

preparation example Construction

[0059] The present invention also provides a preparation method of the above-mentioned catalytic cracking multifunctional enhanced income-increasing agent: the preparation method includes the following steps: first, add the solvent into the enamel stirring reaction kettle, slowly raise the temperature to 60-110°C within 1-2 hours, and then sequentially press Proportionally add emulsifier, antioxidant, drier and metal deactivator, stir for 1-2 hours, cool and filter to remove solid impurities to obtain the finished product.

[0060] The physical and chemical indicators of the product should meet the requirements in the table below

[0061]

Embodiment 1

[0063] Synthesis of antimony naphthenic acid: 1. Add 600ml of naphthenic acid with a crude acid value of 170-180mgKOH / g into the reactor, add 300ml of acetic anhydride, and 100ml of antimony trioxide; 2. Heat the reactor to 100 -150°C, start stirring, react for 1 hour, the color of the material in the reactor changes from the initial khaki to brown, the reaction is complete, and the result is antimony naphthenate.

[0064] First add 1000g of kerosene into the enamelled stirring reaction kettle, slowly heat up to 60°C within 60 minutes, then add 1300g of octylphenol polyoxyethylene ether, 2000g of phenyl-α-naphthylamine, and 3500g of rare earth naphthenic acid in sequence, 300 g of antimony naphthenate was stirred and reacted for 1 hour, cooled and then filtered to remove solid impurities to obtain the finished additive A.

Embodiment 2

[0066] The synthesis of antimony naphthenate is the same as in Example 1.

[0067] First add 1500g of diesel oil into the enamel stirring reaction kettle, slowly heat up to 80°C within 90 minutes, then add 1500g of nonylphenol polyoxyethylene ether, 2500g of didodecyl diphenylamine, and 4000g of rare earth naphthenic acid in proportion, 500 g of antimony naphthenate was stirred and reacted for 1.5 hours, cooled and filtered to remove solid impurities to obtain the finished additive B.

technical field

[0001] The invention belongs to the field of oil refining yield-increasing agents, and relates to a catalytic cracking multifunctional enhanced yield-increasing agent. Background technique

[0002] Catalytic cracking is one of the petroleum refining processes. It is a process in which heavy oil undergoes a cracking reaction under the action of heat and a catalyst, and is converted into cracked gas, gasoline and diesel oil. The raw material is heavy distillate obtained from crude oil distillation (or other petroleum refining process); or heavy distillate mixed with a small amount of residual oil, deasphalted residual oil after solvent deasphalting; or all use atmospheric residual oil or reduced Pressure residue. Catalytic cracking is one of the main processes used by petroleum refineries to produce gasoline from heavy oil.

[0003] With the increasingly serious trend of heavy and inferior quality of catalytic cracking raw oil, this will inevitably increase t...

Examples

preparation example Construction

[0059] The present invention also provides a preparation method of the above-mentioned catalytic cracking multifunctional enhanced income-increasing agent: the preparation method includes the following steps: first, add the solvent into the enamel stirring reaction kettle, slowly raise the temperature to 60-110°C within 1-2 hours, and then sequentially press Proportionally add emulsifier, antioxidant, drier and metal deactivator, stir for 1-2 hours, cool and filter to remove solid impurities to obtain the finished product.

[0060] The physical and chemical indicators of the product should meet the requirements in the table below

[0061]

Embodiment 1

[0063] Synthesis of antimony naphthenic acid: 1. Add 600ml of naphthenic acid with a crude acid value of 170-180mgKOH / g into the reactor, add 300ml of acetic anhydride, and 100ml of antimony trioxide; 2. Heat the reactor to 100 -150°C, start stirring, react for 1 hour, the color of the material in the reactor changes from the initial khaki to brown, the reaction is complete, and the result is antimony naphthenate.

[0064] First add 1000g of kerosene into the enamelled stirring reaction kettle, slowly heat up to 60°C within 60 minutes, then add 1300g of octylphenol polyoxyethylene ether, 2000g of phenyl-α-naphthylamine, and 3500g of rare earth naphthenic acid in sequence, 300 g of antimony naphthenate was stirred and reacted for 1 hour, cooled and then filtered to remove solid impurities to obtain the finished additive A.

Embodiment 2

[0066] The synthesis of antimony naphthenate is the same as in Example 1.

[0067] First add 1500g of diesel oil into the enamel stirring reaction kettle, slowly heat up to 80°C within 90 minutes, then add 1500g of nonylphenol polyoxyethylene ether, 2500g of didodecyl diphenylamine, and 4000g of rare earth naphthenic acid in proportion, 500 g of antimony naphthenate was stirred and reacted for 1.5 hours, cooled and filtered to remove solid impurities to obtain the finished additive B.

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