Solid carbonaceous feed to liquid process
US7741377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Feb 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process to prepare a paraffinic hydrocarbon from a solid carbonaceous feedstock, preferably coal by performing the following steps,(a) feeding an oxygen comprising gas and the carbonaceous feedstock to a burner positioned horizontal and firing into a reactor vessel,(b) performing a partial oxidation of the carbonaceous feedstock in said burner to obtain a stream of hot synthesis gas which flows upwardly relative to the burner and a liquid slag which flows downwardly relative to the burner,(c) cooling the hot synthesis gas by first cooling the gas to a temperature of between 500 and 900° C. by injecting a gaseous or liquid cooling medium into the synthesis gas and subsequently second cooling the gas in to below 500° C. by directly contacting with water,(d) separating solids from the cooled synthesis gas by means of a water scrubbing process step,(e) performing a water shift reaction on at least part of the scrubbed synthesis gas,(f) separating sulphur compounds, carbon dioxide and other possible impurities from the shifted gas to obtain a purified synthesis gas, and(g) performing a Fischer-Tropsch synthesis using the purified synthesis gas of step (f) to obtain a synthesis product…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.