Reactor and process for preparing phosgene

US8492587B2 · 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: Jul 23, 2013
• Expiry date: Apr 6, 2030

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 the catalyst tubes (2) of a bundle 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 (6) in the intermediate space (4) between the catalyst tubes (2) , where the flow of the heat transfer medium (6) in the space (4) between the catalyst tubes (2) is guided by deflection plates (5), which leave alternating openings (7) free on opposite sides at the interior wall of the reactor, in which openings the deflection plates (5) have cutouts having the shape of a segment of a circle, and the reactor (1) has no tubes in the region of the openings (7), wherein the heat transfer coefficients at the interface between the catalyst tubes…