Jet reactor with flow ducts and process for preparing isocyanates using it
US8206652B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2007 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Nov 17, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00254
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a flow duct type jet reactor and a process for preparing isocyanates using it. The flow duct type jet reactor situates flow ducts in inner feed pipe which form whirlpool and reinforce vortex, thereby amine steam rapidly admixes and reacts with phosgene, and the byproducts are reduced. In addition, the present process uses a jet-absorption apparatus which rapidly cools the high temperature gas discharged from the reactor to a temperature at which the product is thermally stable, and at the same time provides negative pressure for the reaction process of the system, and thus saving bulky vacuum system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.