Passivator and preparation method thereof

A technology of passivating agent and crosslinking agent, which is applied in the fields of metal refining, petroleum industry, and hydrocarbon oil treatment. It can solve the problems of antimony loss, deposition, and human health effects, and achieve the effect of effective removal and enhanced adsorption force

Inactive Publication Date: 2020-09-01
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The commonly used metal passivation agent is antimony agent, which has a good nickel passivation effect, but because antimony is easy to be lost with the product or deposited in the equipment, it has a certain impact on human health

Method used

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preparation example Construction

[0031] For the solution looking for the substitute of antimony base passivator, the invention provides a kind of preparation method of passivator, comprises the steps:

[0032] S1: Mix antimony salt, tin salt and aromatic hydrocarbon solvent to form a first solution;

[0033] S2: adding a crosslinking agent to the first solution, and reacting at 0°C to 10°C to obtain a second solution;

[0034] S3: adding organic amine and deionized water to the second solution in sequence, stirring and reacting at 50° C. to 100° C. to obtain a mixture;

[0035] S4: heating and evaporating the mixture at 90°C to 180°C to obtain a solid intermediate product;

[0036] S5: calcining the solid intermediate product at 500° C. to 800° C. to obtain a passivating agent.

[0037] This application uses antimony salts and tin salts as raw materials. Compared with oxides as raw materials, since the properties of antimony salts and tin salts are more stable, there is no need to add additional stabilizers...

Embodiment 1

[0061] The present embodiment provides a kind of preparation method of passivating agent, comprises the steps:

[0062] S1: Dissolving 10g of antimony trichloride and 10g of tin tetrachloride in 40g of benzene to form a first solution;

[0063] S2: Take 5ml (about 7.1g) of chloroacetyl chloride and slowly drop it into the first solution, control the temperature at 0°C, and the reaction time for 30min to obtain the second solution;

[0064] S3: Measure 5ml (about 4.5g) of ethylenediamine, add it dropwise to the second solution, then measure 5ml deionized water, add it dropwise to the second solution, heat and stir, and stir magnetically at 100°C. The rotational speed of magnetic stirring is 500 rpm, reacted for 2h to obtain a mixture;

[0065] S4: heating and evaporating the mixture at 90° C. for 6 h to obtain a solid intermediate product;

[0066] S5: Put the solid intermediate product into a high-temperature furnace, raise the temperature to 500° C. at a heating rate of 1° ...

Embodiment 2

[0070] The present embodiment provides a kind of preparation method of passivating agent, comprises the steps:

[0071] S1: Dissolving 15g of phenylantimony and 15g of alkyltin in 80g of ethylbenzene to form a first solution;

[0072] S2: Take 10ml (about 12.35g) of 1,2-dichloroethane and slowly add it dropwise to the first solution, control the temperature at 5°C, and react for 60 minutes to obtain the second solution;

[0073] S3: Measure 5ml of triethylamine (about 3.65g), add it dropwise to the second solution, then measure 10ml of deionized water, add it dropwise to the second solution, heat and stir, and magnetically stir at 90°C, the speed of magnetic stirring is 5000 rpm, reacted for 3h to obtain the mixture;

[0074] S4: heating and evaporating the mixture at 120° C. for 16 h to obtain a solid intermediate product;

[0075] S5: Put the solid intermediate product into a high-temperature furnace, raise the temperature to 600° C. at a heating rate of 5° C. / min, and kee...

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Abstract

The invention provides a passivator and a preparation method thereof, and relates to the technical field of chemical material preparation. The preparation method of the passivator comprises the following steps: S1, mixing an antimony salt, a tin salt and an aromatic solvent to form a first solution; S2, adding a cross-linking agent into the first solution, and reacting to obtain a second solution;S3, sequentially adding organic amine and deionized water into the second solution, and reacting to obtain a mixture; S4, heating and evaporating the mixture to obtain a solid intermediate; and S5, calcining the solid intermediate to obtain the passivator. According to the preparation method of the passivator, the surface of the prepared SbSn / C passivator has certain oleophylic performance, the adsorption acting force on porphyrin molecules is enhanced through Van der Waals' force action and pi-pi action with macromolecules such as porphyrin nickel and porphyrin vanadium, and impurities suchas Ni and V in crude oil are effectively removed.

Description

technical field [0001] The invention relates to the technical field of chemical material preparation, in particular to a passivating agent and a preparation method thereof. Background technique [0002] Crude oil refining is an important chemical production process, in which hydrofining, hydrocracking, hydroreforming and other processes are important steps in the production of petrochemical fuels, and nickel (Ni) and vanadium (V ) and other heavy metals are very harmful to the hydrogenation process, especially to catalytic cracking. [0003] Vanadium forms V at high temperature 2 o 5 , promoting SO 2 Oxidation to SO 3 , to accelerate the corrosion of equipment; in addition, vanadium can destroy the zeolite lattice structure of the catalyst, resulting in permanent deactivation of the catalyst. Nickel is deposited on the surface of the catalyst and is easily reduced to metallic nickel in a reducing atmosphere, which affects the selectivity and activity of the catalyst. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/04
CPCC10G29/04C10G2300/205
Inventor 张震威邓瑶瑶吴泽颖魏雪姣乐传俊向梅张微
Owner CHANGZHOU INST OF TECH
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