Manufacture of methylolalkanes with augmented heat transfer and improved temperature control

US9676689B2 · kind B2 · utility

Assignee

• OXEA BISHOP LLC · US

Inventors

• Michael J. Stone · Lake Jackson, US
• Howard W. Brooks · Bay City, US
• Heinz Strutz · Usingen, DE
• Donald K. Raff · Waynesville, US
• Guido D. Frey · Riedstadt, DE
• Norman Nowotny · Essen, DE
• Marcos L. Schroeder · Andover, US
• Fred Gaytan · Kingsville, US
• Tracy Kevin Hunt · Port Aransas, US
• William E. Slinkard · Richmond, US

Key dates

• Filing date: Jul 23, 2014
• Grant date: Jun 13, 2017
• Expiry date: Jul 23, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00772
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A multistage tubular reaction system and method for preparing methylol derivatives of an aldehyde includes a tubular reaction system with a plurality of successive reactor stages comprising a plurality of jacketed reaction tubes provided with a cooling system adapted to control flow of a cooling medium through said jacketed reaction tubes. The cooling medium flow is controlled independently in different stages in response to temperature measurements in the reaction system to regulate temperature. In order to further reduce temperature spikes and byproduct generation, aldehyde is stepwise added to the production stream at a plurality of feed ports proximate to reaction tubes equipped with tube inserts to enhance mixing and heat transfer.