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

Presulfiding OCR catalyst replacement batches

Inactive Publication Date: 2005-01-13
CHEVROU USA INC
View PDF4 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

FIG. 3 shows the improved desulfurization performance

Problems solved by technology

Frequent shutdowns to remove metal fouled catalyst is a major expens

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 OCR catalyst replacement batches
  • Presulfiding OCR catalyst replacement batches
  • Presulfiding OCR catalyst replacement batches

Examples

Experimental program
Comparison scheme
Effect test

examples

The catalytic particulates comprised an alumina porous carrier material or alumina inorganic support. Deposited on and / or in the alumina porous carrier material was an oxidic hydrotreating catalyst component consisting of NiO and / or MoO3. The Mo was present on and / or in the alumina porous carrier material in an amount of about 3% by wt., based on the combined weight of the alumina porous carrier material and the oxidic hydrotreating catalyst component(s). The Ni was present on and / or in the alumina porous carrier material in an amount of about 1% by wt., based on the combined weight of the alumina porous carrier material and the oxidic hydrotreating catalyst component(s). The surface area of the catalytic particulates was about 120 sq. meters per gram.

The plurality of catalytic particulates were generally spherical with a mean diameter having a value ranging from about 6 Tyler mesh to about 8 Tyler mesh and an aspect ratio of about 1. The mean crush strength of the catalytic part...

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
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Login to View More

Abstract

Catalyst particles are presulfided in a pretreatment zone separate from a hydroconversion reaction zone. The presulfided catalyst is then added to a moving 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 The present invention relates to a method for extending the catalytic life of catalyst used in hydroprocessing of a hydrocarbon feed stream. More particularly, the present invention provides for a method for presulfiding hydroprocessing catalyst in order to improve operability, reduce catalyst fouling rate, and extend the catalytic life of a catalyst bed employed in a hydroconversion reaction zone during hydroprocessing. The present invention more particularly provides for a method for presulfiding hydroprocessing catalyst ex-situ before transferring presulfided hydroprocessing catalyst into a hydroprocessing reactor system. The method is intended to improve the operability and reduce catalyst fouling rate, and to extend the catalytic life of a generally “packed catalyst bed” in the hydroprocessing reactor system that is preferably capable of onstream catalyst replacement. The methods of the present invention may also be advantageously practiced in hydro...

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): C10G45/04
CPCC10G45/04
Inventor LEUNG, PAK C.EARLS, DAVID E.REYNOLDS, BRUCE E.JOHNSON, DAVID R.BACHTEL, ROBERT W.TRIMBLE, HAROLD J.
Owner CHEVROU USA INC
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