Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of start-up method of sulfurized catalyst

A catalyst and vulcanization-type technology, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve problems such as insufficient vulcanizing agents, affecting catalyst vulcanization effect, etc., to achieve thorough vulcanization, avoid overheating, The effect of solving the airtight problem

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of start-up method of sulfurized catalyst
  • A kind of start-up method of sulfurized catalyst

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a start-up method of a sulfide catalyst. The start-up method includes the following contents: loading a sulfide hydrogenation catalyst composition into a reactor, performing nitrogen airtightness, and gradually introducing hydrogen after passing the nitrogen airtightness, and carrying out Hydrogen is air-tight at low pressure, and after the low-pressure air-tightness is qualified, the temperature is raised and the pressure is increased for high-pressure air-tightness; after the high-pressure airtightness is qualified, the pressure is adjusted to the reaction pressure until the vulcanization is completed, and finally the temperature is adjusted to the reaction temperature, and the raw material oil is fed to start the hydrogenation reaction. The start-up method can not only ensure the vulcanization quality of the catalyst, but also solve the airtight problem of the device, and has no pollution to the environment, and is economical and environmentally friendly.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com