Selective recovery of aluminium, cobalt and platinum values from a spent catalyst composition

a technology of spent catalysts and compositions, applied in the field of specific spent catalyst compositions, can solve the problems of unfavorable dumping, considered environmentally toxic, and unfavorable dumping of leached residues

Inactive Publication Date: 2004-11-04
SASOL TEKHNOLODZHI PROPRIEHJTEHRI LTD
View PDF9 Cites 46 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result of the organic content in the catalyst coupled with the fact that both cobalt and platinum are considered to be environmentally toxic, dumping is not a viable option.
In this method, which is very expensive, the pollutants like

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] The invention will now be described with reference to the following examples, which are not intended to limit the scope of the invention.

1. Oxidising of the Spent Catalyst Composition--Oxidising Step

[0066] The spent catalyst composition from a Fischer-Tropsch reaction for the industrial synthesis of certain hydrocarbons from carbon monoxide and hydrogen typically contains about 60 to 75% of the organic content.

[0067] This spent catalyst is initially heated to a temperature ranging from 700 to 1000.degree. C. at atmospheric pressure for 2 to 6 hr in the presence of air to oxidise the organic material. A high temperature furnace (maximum temperature of the furnace is 1400.degree. C. was used for the heating.

[0068] In another run, the spent catalyst composition was oxidised in the presence of either sodium carbonate or sodium chloride to prevent the formation of the spinels such as cobalt aluminate (Co.sub.2AlO.sub.4) and cobalt (II) dicobalt (III) oxide (CO.sub.3O.sub.4) during...

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
Fractionaaaaaaaaaa
Fractionaaaaaaaaaa
Fractionaaaaaaaaaa
Login to view more

Abstract

The invention provides a process for the selective recovery of aluminium, cobalt and platinum, and compounds thereof, from a catalyst composition including aluminium, cobalt and platinum, said proscess including the steps of treating the catalyst composition to selectively get ions of substantially only one of the aluminium. cobalt and platinum into solution, recovering, in separate process steps, the thus treated aluminium, cobalt, or platinum in salt or metal form, and repeating the treating and recovering steps for each of the aluminium, cobalt and platinum. The treating steps may include process steps such as leaching, washing, dissolving, stripping, and the like. The recovery steps may include filtration, precipitation, separation, flocculation, and the like.

Description

[0001] This invention relates to the selective recovery of metal values from a spent catalyst composition. In particular this invention relates to a process for the selective recovery of aluminium, Cobalt and Platinum and / or compounds thereof, from a spent catalyst composition.BACKGROUND TO THE INVENTION[0002] The specific spent catalyst composition of the current invention is obtained from Fischer Tropsch synthesis reactions for the production of predominantly paraffinic hydrocarbons.[0003] The catalyst is an impregnated Fischer Tropsch Catalyst comprising an alumina carrier and active component selected from the group consisting of cobalt and / or iron and mixtures thereof. The catalyst may also comprise of a group VIII noble metal as promoter.[0004] The Fischer-Tropsch process is used to produce hydrocarbons from carbon monoxide and hydrogen. In the Fischer-Tropsch process, a cobalt catalyst may be used to activate the catalytic reaction. This catalyst may be prepared with a cobalt...

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): C22B7/00C22B11/00C22B23/02
CPCC22B7/009C22B11/048C22B23/026C22B23/0461Y02P10/20
Inventor MATJIE, RATALE HENRYDE WET, EWALD WATERMEYERMDLENI, MASIKANA MILLAN
Owner SASOL TEKHNOLODZHI PROPRIEHJTEHRI LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap