Temperature control method for series-connected reactors
US4457829A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1982 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Sep 9, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G65/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for controlling the temperature and composition of a vapor feedstream into a second reactor connected in series flow arrangement with a first reactor. The effluent stream from the first reactor containing vapor and liquid fractions is first cooled against a vapor stream and then further cooled against a suitable external fluid, then is phase separated to provide vapor and liquid fractions. The separated vapor fraction is reheated against the first reactor effluent stream and passed at an intermediate temperature into the second reactor. The first reactor is preferably an ebullated bed type catalytic reactor and the second reactor is preferably a fixed bed type catalytic reactor which is operated at an inlet temperature 20.degree.-200.degree. F. lower than the first reactor effluent stream temperature. If desired, the effluent stream from the first reactor can be initially phase separated into vapor and liquid factions, and the vapor fraction only passed to the first heat exchange step for cooling to a first lower temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.