Process for combining the operation of oligomerization reactors containing a zeolite oligomerization catalyst
US4855524A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1988 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Sep 29, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/46
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for combining the operation of (i) a primary reactor (referred to as a "MOG" reactor), in which an olefin-containing light gas or light naphtha is oligomerized to gasoline range hydrocarbons, and, (ii) a high pressure secondary reactor (referred to as a "MODL" reactor), to make distillate or lubes, using the effluent (primary effluent) from the MOG reactor as feed for the MODL reactor. In the distillate mode, the primary effluent is tailored so as to be substantially free (less than 3 mol %) of C.sub.10.sup.+ components. Because the C.sub.10.sup.+ "make" from the MOG reactor is spared passage through the MODL reactor, conversion of the C.sub.10.sup.+ components typically experienced due to cracking and oligomerization in the MODL is avoided. Because the C.sub.4.sup.- light components which are highly paraffinic, are separated from the primary effluent in a debutanizer to provide a mainly C.sub.5 -C.sub.9 stream, conversion of olefins to distillate in the MODL reactor is enhanced relative to using a feed, not tailored as described, to the MODL reactor. The yield of desired C.sub.10.sup.+ product is surprisingly high. In addition, the throughput to the MODL rea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.