Reactor and process for preparing phosgene

US9023300B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gerhard Olbert · Dossenheim, DE
• Wolfgang Gerlinger · Schifferstadt, DE
• Byoung-Yeon Kim · Baton Rouge, US

Key dates

• Filing date: Dec 16, 2009
• Grant date: May 5, 2015
• Expiry date: Jun 17, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/0286
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid-state catalyst, which is provided in a plurality of catalyst tubes (2) which are arranged parallel to one another in the longitudinal direction of the reactor (1) and are welded at each of their two ends into a tube plate (3), with introduction of the starting materials at the upper end of the catalyst tubes (2) and discharge of the gaseous reaction mixture at the lower end of the catalyst tubes (2), in each case via a cap, and also with introduction and discharge facilities for a liquid heat transfer medium (7) in the space (4) between the catalyst tubes (2) within the shell, where the flow of the heat transfer medium (7) in the space (4) between the catalyst tubes (2) within the shell is meandering as a result of deflection plates (5), each alternative deflection plate (5) leaves two openings (6) having the shape of a segment of a circle free on opposite sides at the interior wall of the reactor and the immediately subsequent deflection plate leaves a central opening (11) which is bounded by two straight lines which are parallel to and equidistant from one another…