Separation of solids from tar sands extract
US4094781A · kind A · utility
10Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1976 |
| Grant date | Jun 13, 1978 |
| Priority date | — |
| Expiry date | Nov 10, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Solids are separated from a tar sands extract by gravity settling or centrifugation in the presence of a liquid promoter which promotes and enhances the separation of the solid material. The liquid promoter has a characterization factor of at least 9.75, a 5 volume percent distillation temperature of at least 250.degree. F and a 95 volume percent distillation temperature of at least 350.degree. F and no greater than 750.degree. F. As a result, liquid product is obtained without the necessity of preliminary coking of the entire extract.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.