Controlling tar by quenching cracked effluent from a liquid fed gas cracker
US7582201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Jul 26, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G9/002
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a system for thermal cracking gaseous feedstocks, the system including a gas cracker for producing an effluent comprising olefins, at least one transfer line exchanger for the recovery of process energy from the effluent and a water quench tower system, a process for extending the range of system feedstocks to include liquid feedstocks that yield tar is provided. The process includes the steps of injecting a first quench fluid downstream of a primary transfer line exchanger to quench the process effluent comprising olefins, separating in a first separation vessel a cracked product and a first byproduct stream comprising tar from the quenched effluent, directing the separated cracked product to a water quench tower system and quenching the separated cracked product with a second quench fluid to produce a cracked gas effluent for recovery and a second byproduct stream comprising tar. An apparatus for carrying out such process is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.