Check patentability & draft patents in minutes with Patsnap Eureka AI!

Presulfiding hydroprocessing catalyst replacement batches

A hydroprocessing and catalyst technology, applied in physical/chemical process catalysts, catalyst protection, chemical/physical processes, etc., can solve problems such as activity loss

Inactive Publication Date: 2003-06-11
CHEVROU USA INC
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a loss of activity can occur if a fresh or regenerated catalyst batch containing the promoter metal in an oxidized state is suddenly charged to an in-line reactor operating at a temperature above 300°C

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
  • Presulfiding hydroprocessing catalyst replacement batches
  • Presulfiding hydroprocessing catalyst replacement batches
  • Presulfiding hydroprocessing catalyst replacement batches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0095] The catalyst particles contain alumina porous carrier material or alumina inorganic carrier. Deposited on and / or in the alumina porous carrier material is NiO and / or MoO 3 The oxidative hydroprocessing catalyst component. The Mo content on and / or within the alumina porous support material is approximately 3 wt% based on the combined weight of the alumina porous support material and the oxidative hydroprocessing catalyst component. The content of Ni present on and / or in the alumina porous support material is approximately 1 wt% based on the combined weight of the alumina porous support material and the oxidative hydroprocessing catalyst component. The surface area of ​​the catalyst particles is approximately 120 square meters per gram.

[0096] Most of the catalytic particles are generally spherical, with an average diameter of about 6 Taylor standard sieves to about 8 Qinle standard sieves, and an aspect ratio of about 1. The average crushing strength of the catalytic pelle...

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

No PUM Login to View More

Abstract

Catalyst particles are presulfided in a treatment zone separate from a hydroconversion reaction zone. The presulfided catalyst is then added to a substantially packed bed of catalyst in the hydroconversion reaction zone at reaction pressure, so that the reactor is not shut down to replace catalyst. The presulfiding process is particularly beneficial for use in moving bed reactors for heavy oil conversion.

Description

Background of the invention [0001] The present invention relates to a method for extending the catalytic life of a catalyst used in the hydroprocessing of a hydrocarbon feed stream. More specifically, the present invention provides a presulfurized hydroprocessing catalyst to improve applicability, reduce catalyst poisoning rate, and extend the catalytic life of the catalyst bed in the hydroconversion reaction zone during hydroprocessing. More specifically, the present invention further provides a method for externally presulfiding the hydroprocessing catalyst before transferring the presulfided hydroprocessing catalyst into the hydroprocessing reaction system. The method aims to improve the applicability and reduce the rate of catalyst poisoning, and to extend the catalytic life of the usual "packed catalyst bed" (which preferably replaces the catalyst in operation) used in the hydroprocessing reactor system. The method of the present invention can also be advantageously implement...

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
IPC IPC(8): B01J33/00C10G45/04
CPCC10G45/04
Inventor P·C·勒昂D·E·厄尔斯B·雷诺兹D·R·约翰逊R·巴克特尔H·J·特里姆伯
Owner CHEVROU USA INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com