Removal of low-boiling fractions from high temperature heat transfer systems

US5352336A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Walter F. Seifert · Midland, US
• Gary R. Buske · Midland, US
• John B. Cuthbert · Midland, US

Key dates

• Filing date: Jun 17, 1993
• Grant date: Oct 4, 1994
• Expiry date: Jun 17, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D3/343
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Water and organic low-boiling constituents in organic heat transfer fluids used to heat commercial processes are removed by introducing a gas such as nitrogen into a turbulent flow of the heat transfer fluid and separating gas which then contains low-boiling constituents from the heat transfer fluid of the heat transfer system. The gas containing low-boiling constituents may be sent to a condenser to return heat transfer fluid which also vaporizes into the gas, but to a lesser extent than the low-boilers, to the heat transfer system. The gas containing low-boiling constituents is then combusted.