Quench assembly design
US4960571A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1988 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Dec 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00777
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
According to this invention, a quench assembly having improved mixing efficiency comprises a series of mixing zones: quench fluid inlet zone; quench mixing zone; a jet stirred mixing zone; and a distributor zone. In the quench fluid inlet zone, quench fluid is introduced to fluid from the catalytic bed above. The quench fluid is introduced through holes in a quench pipe, creating jets of quench fluid which entrain and mix the reactant fluid, typically partially reacted, from the bed above. This mixing zone is separated from the quench mixing zone by means of a horizontally disposed plate having a central opening therein. The reaction fluid and quench fluid enter the quench mixing zone through the central opening in the plate separating the two zones and impinge on a bottom quench mixing zone plate, where the gases are turned radially outward and passed over and around a series of mixing baffles. A plurality of pipes is located in an annular ring near the periphery of the bottom plate of the quench mixing zone for introduction of the quench gas and process fluid into a jet stirred mixing zone. Thus, the flow of fluids coming out of the quench mixing zone is introduced in a swirling …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.