Process for removal of metals from oils/fats

US8802879B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Sarvesh Kumar · Faridabad, IN
• Ravi Kumar · Allentown, US
• Alok Sharma · Lisle, US
• Brijesh Kumar · Barwala, IN
• Surbhi Semwal · Faridabad, IN
• Ajay Kumar Arora · Faridabad, IN
• Suresh Kumar Puri · Faridabad, IN
• Saeed Ahmed · Signal Hill, US
• Vivekanand Kagdiyal · Faridabad, IN
• Santanam Rajagopal · Faridabad, IN
• Ravinder Kumar Malhotra · Faridabad, IN
• Anand Kumar · Southfields, US

Key dates

• Filing date: Jul 4, 2011
• Grant date: Aug 12, 2014
• Expiry date: Jul 4, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11B3/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention describes process for demetallation of vegetable oils and animal fats to reduce metal content below 1 ppm to make them suitable for hydroprocessing feedstocks. The process comprises acid treatment with very low concentration of acids, utilizing synergistic effect of phosphoric acid and citric acid, followed by counter-current treatment with clay without intermediate step of water washing and treatment with ion exchange resin.