Vulcanization type catalyst starting method

A catalyst, vulcanization-type technology, applied in physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of insufficient vulcanizing agent, affecting the vulcanization effect of catalysts, etc., to avoid flying temperature and solve air tightness Problems, the effect of ensuring the quality of vulcanization

Active Publication Date: 2019-06-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrogen sulfide enters the circulating hydrogen before the airtightness. Once the airtightness is unqualified and vented, it will lead to insufficient sulfidation agent and affect the sulfidation effect of the catalyst.

Method used

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  • Vulcanization type catalyst starting method
  • Vulcanization type catalyst starting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of hydrogenation catalyst A

[0033] 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. The hydrotreating catalyst A is obtained.

[0034]...

Embodiment 2

[0037] (1) Preparation of hydrogenation catalyst B

[0038] 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 Raise the temperature to 150°C and keep the temperature 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.

[0039] (2) Catalyst start-up method and evaluation

[0040]...

Embodiment 3

[0042] (1) Preparation of hydrogenation catalyst C

[0043] 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...

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Abstract

The invention discloses a vulcanization type catalyst starting method, which comprises: loading a vulcanization type hydrogenation catalyst composition into a reactor; carrying out nitrogen gas tightness; gradually introducing hydrogen gas after the nitrogen gas tightness is qualified; carrying out hydrogen gas low-pressure gas tightness; increasing the temperature and the pressure after the low-pressure gas tightness is qualified; carrying out high-pressure gas tightness; and after the high-pressure gas tightness is qualified, adjusting the pressure to a reaction pressure until vulcanizationis completed, adjusting the temperature to a reaction temperature, feeding raw material oil, and starting a hydrogenation reaction. With the starting method of the present invention, the vulcanizationquality of the catalyst can be ensured, the gas tightness problem of the device can be solved, and the advantages of no environment pollution, economy and environmental protection can be achieved.

Description

technical field [0001] The invention relates to a catalyst start-up method, in particular to a sulfurized catalyst start-up method. Background technique [0002] In recent years, the trend of inferior crude oil has become increasingly obvious, while the demand for clean fuels in various countries is increasing. Hydrogenation technology is one of the most effective means of producing clean fuels, and its efficient hydrogenation catalyst has become the key technology of hydrogenation technology. The active metals of conventional hydrogenation catalysts are in the oxidized state, but the active substances are in the sulfided state in actual use, so they need to be sulfided in the reactor before use. [0003] Conventional hydrogenation catalysts are in an oxidized state, but the active substances are in a sulfurized state in actual use, so they need to be sulfurized in the reactor before use. Patent CN1171430A describes a typical in-vehicle pre-sulfurization method, wherein the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/20B01J37/08C10G45/08C10G47/20
Inventor 徐黎明高玉兰葛海龙孟兆会佟佳
Owner CHINA PETROLEUM & CHEM CORP
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