Partial oxidation of ash-containing liquid hydrocarbonaceous and solid carbonaceous
US4788003A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S48/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention pertains to the use of an ash-removal additive in the production of hot raw gaseous mixtures comprising H.sub.2 +CO and containing entrained molten slag by the partial oxidation of a feedstock comprising a heavy liquid hydrocarbonaceous fuel having a nickel and vanadium-containing ash or petroleum coke having a nickel and vanadium-containing ash. Sticking and build-up of molten slag on the surfaces of a steel quench ring and heat exchanger which may be contacted by the molten slag entrained in the hot raw effluent gas stream is prevented by the high temperature electrodeposition of a protective metal e.g. aluminum or titanium. The protective metal is electrodeposited from an electrolytic bath comprising molten fluorides and diffuses beneath the surface and forms an alloy or solid solution with the subsurface metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.