Production of petroleum cokes
US3959115A · kind A · utility
11Cited by
4References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 4, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Nov 4, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10B55/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Any kind of virgin, low-sulfur crude oil is directly treated in a two-stage delayed coking process for yielding non-crystalline coke in the first stage and high-crystalline coke in the second stage, which process comprises preheating the crude oil in a tube heater to 460.degree. - 520.degree.C under 5-20 kg/cm.sup.2 G, maintaining the oil therein at that temperature for 30 - 500 seconds to allow the oil to be heat-soaked, subjecting the oil to first delayed coking under relatively mild conditions and subjecting the uncoked heavy residual oil to second delayed coking under relatively severe conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.