Process for reducing total acid number of heat transfer fluid

US11053446B2 · kind B2 · utility

Assignee

• RELIANCE INDUSTRIES LIMITED · IN

Inventors

• Prakash Kumar · Sayla, IN
• Satish Kumar · Hyderabad, IN
• Sunil Agrahari · Nagar, IN
• Sunil Peter · Thrissur, IN
• Kalpana Gopalakrishnan · Vadodara, IN
• Rajeev Kumar Gupta · Amroli, IN
• Viral Desai · Salumbar, IN
• Tarun Singla · Sangrur, IN
• Dinesh Kakkar · Firozpur, IN
• Pankaj Upadhyay · Katni, IN
• Piyush Vyas · Ujjain, IN
• Raksh Vir Jasra · Sayla, IN

Key dates

• Filing date: May 18, 2018
• Grant date: Jul 6, 2021
• Expiry date: May 18, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2300/302
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present disclosure relates to a process to reduce total acid number (TAN) of a heat transfer fluid. The process comprises contacting the heat transfer fluid with an adsorbent composition at a temperature in the range of 50° C. to 350° C. and a pressure in the range of 1 bar to 10 bar to obtain a treated heat transfer fluid having total acid number (TAN) in the range of 0.003 to 0.03 and pH in the range of 6 to 7.5, wherein the adsorbent composition is provided in a fixed bed and the heat transfer fluid is passed through the fixed bed comprising the adsorbent composition at a liquid hourly space velocity (LHSV) in the range of 0.5 per hour to 10 per hour.