A hydrogenation catalyst composition and its preparation method

A technology of hydrogenation catalyst and composition, applied in catalyst activation/preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalyst, etc. Low temperature, catalyst carbon deactivation and other problems, to avoid bed temperature flying, increase electronegativity, and protect activity

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when solid sulfur is used as the raw material, since sulfur powder and hydrogen start to react at 100°C to generate a large amount of reaction heat, the initial temperature of vulcanization is low, and the raw material oil needs to be introduced in advance in order to avoid the overheating of the bed, and the device is designed to avoid hydrogen embrittlement. High-pressure airtightness needs to be carried out at a temperature above 135°C, which creates a contradiction between the two, thus becoming an obstacle to the application of external pre-vulcanization technology
Moreover, when sulfur powder is used as the raw material, the conventional external pre-sulfurization technology produces hydrogen sulfide from sulfur powder and hydrogen at the same time when starting the operation, and the reaction of hydrogen sulfide and metal to form metal sulfide will release a large amount of reaction heat, which will easily cause the bed to overheat. , to deactivate the catalyst by carbon deposition

Method used

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  • A hydrogenation catalyst composition and its preparation method
  • A hydrogenation catalyst composition and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 100g of the oxidized catalyst and spray it with 36g of aqueous solution of 75wt% tetrakis hydroxymethyl phosphorus sulfate, after aging at room temperature for 8 hours, take 20mL of catalytic diesel oil and mix it with it, let it stand for 20min after mixing, take 8g of sulfur powder and mix it again, put The samples were placed in a converter for low-temperature heat treatment. The low-temperature heat treatment conditions were as follows: the temperature was raised to 120°C at a rate of 3°C / min, and the temperature was kept constant for 3 hours. After the sample is cooled, spray the sample with 10ml of hydrazine hydrate, and then put it into a converter for low-temperature heat treatment. The low-temperature heat treatment conditions are: the temperature is raised to 100°C at a rate of 3°C / min, and the temperature is kept at a constant temperature for 3 hours. That is, the hydrotreating catalyst A is obtained.

Embodiment 2

[0027] Take 20mL of coking gasoline and spray 100g of industrially produced oxidized catalyst, mix and let it stand for 20min, take 8g of sulfur powder and mix it again, put the sample into the converter for low-temperature heat treatment, the low-temperature heat treatment condition is: 3°C / min The temperature was raised to 150° C., and the temperature was kept constant for 3 hours. After the sample is cooled, add 36g of 75% aqueous solution of tetrakis hydroxymethyl phosphorus sulfate, and after aging for 8 hours, put the sample into the converter for the second low-temperature heat treatment. , constant temperature for 3 hours. After the sample is cooled, spray the sample with 10ml of hydrazine hydrate, and carry out the third low-temperature heat treatment, and the treatment conditions are the same as the second time. That is, the hydrotreating catalyst B is obtained.

Embodiment 3

[0029]Take 10mL of coking gasoline and 15mL of cottonseed oil, mix and spray 100g of industrially produced oxidized catalyst, mix and stand for 20min, take 8g of sulfur powder and mix it again, put the sample into the converter for the first low-temperature heat treatment, the low-temperature heat treatment condition is : The temperature was raised to 150°C at a rate of 3°C / min, and the temperature was kept constant for 3 hours. Get Tetrahydroxymethylphosphorous Chloride 14g, spray the sample of low-temperature heat treatment for the first time after diluting with 30ml of water, after aging for 8 hours, put the sample into the converter and carry out low-temperature heat treatment for the second time, the low-temperature heat treatment condition is: with 3 The temperature was raised to 120°C at a rate of °C / min, and the temperature was kept constant for 3 hours. After the sample is cooled, 12ml of hydrazine hydrate is used to spray the sample. After spraying, the sample is put...

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Abstract

The invention discloses a hydrogenation catalyst composition and a preparation method thereof. The hydrogenation catalyst composition comprises an oxidation state catalyst, solid sulfur, an auxiliary agent, an organic compound and hydrazine hydrate. The preparation method loads the organic compound on the catalyst, then introduces solid sulfur and auxiliary substances, performs low-temperature heat treatment, and finally loads hydrazine hydrate and then undergoes low-temperature heat treatment; or first introduces solid sulfur and auxiliary substances, then introduces organic compounds, and performs low-temperature heat treatment. Heat treatment, finally introduce hydrazine hydrate, and then carry out low temperature heat treatment. When the catalyst composition is applied, it can not only ensure the complete vulcanization, but also solve the airtight problem of the device.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a sulfurized hydrogenation catalyst and a preparation method thereof. Background technique [0002] Oxidized hydrogenation catalysts need to be pre-sulfided before being used. The commonly used pre-sulfurization methods include internal pre-sulfurization and external pre-sulfurization. Among them, pre-sulfurization in the vessel is to put the oxidized catalyst into the hydrogenation reactor, and pass hydrogen and sulfidation agent into the reactor during the heating process to make hydrogen sulfide, so that the hydrogenation active metal in the catalyst is oxidized converted into sulfides. External pre-sulfurization means that the catalyst is combined with the vulcanizing agent before being loaded into the reactor, and then loaded into the reactor, and H 2 , as the temperature rises, the sulfiding agent decomposes to generate hydrogen sulfide, thereby...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20B01J31/26
Inventor 徐黎明高玉兰葛海龙孟兆会佟佳
Owner CHINA PETROLEUM & CHEM CORP
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