Process for preparing sodium silicate alkali solution depleted of sodium salt and enriched in silica

US6864202B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Biswanath Sarkar · Faridabad, IN
• Ram Mohan Thakur · Faridabad, IN
• Nagesh Samant · Barwala, IN
• Mohan Kuvettu Prabhu · Barwala, IN
• Ravichandran Gopal · Coimbatore, IN
• Mitra Bhanu Patel · Barwala, IN
• Sanjay Kumar Ray · Barwala, IN
• Krishnan Venkatachalam · Barwala, IN
• Satish Makhija · Barwala, IN
• Sobhan Ghosh · Faridabad, IN

Key dates

• Filing date: Oct 29, 2002
• Grant date: Mar 8, 2005
• Expiry date: May 19, 2023

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/42
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to an improved process for obtaining sodium silicate alkali solution depleted of sodium salt and enriched in silica from a mother liquor recovered after isolation of molecular sieves and more particularly, the present invention relates to a process for recycling mother liquor obtained after the isolation of molecular sieves for the preparation of fresh molecular sieves or as a binder for producing Fluid Catalytic Cracking (FCC) catalyst.