Process for delayed coking of coking feedstocks
US4983272A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1988 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Nov 21, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10B57/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for producing coke from a combined feed. The combined feed is initially provided as a first portion which comprises easily cokable components and a second portion which is essentially free of easily cokable components. The first portion is heated to a temperature lower than that normally employed by a coking heater in a delayed coking process. The second portion is heated to a temperature at which a combination of the first and second portion provides combined feed at coking temperatures. The combined feed is then subjected to coking conditions. The first portion, in one embodiment, may be comprised of a fresh feed and the second portion may be comprised of a coker recycle. In another alternative, a fresh feed and a coker recycle are combined and fractionated to produce the first portion and the second portion. The first portion may include components which boil above a temperature of about 900.degree. F., and the second portion may be essentially free of easily cokable components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.