Process for catalytic conversion of low value hydrocarbon streams to light olefins

US9550708B2 · kind B2 · utility

Assignee

• RELIANCE INDUSTRIES LIMITED · IN

Inventors

• Sukumar Mandal · Faridabad, IN
• Manoj Yadav · Greater Noida, IN
• Amitkumar Parekh · Sayla, IN
• Asit Kumar Das · Faridabad, IN
• Shubhangi Jaguste · Jamkhed, IN
• Praveen Kumar Chinthala · Jamnagar, IN
• Gopal Ravichandran · Barwala, IN
• Mahesh Gopalrao Marve · Jamkhed, IN
• Ajit V. Sapre · Pine Hill, US

Key dates

• Filing date: Aug 14, 2014
• Grant date: Jan 24, 2017
• Expiry date: Jan 17, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for catalytic conversion of low value hydrocarbon streams to light olefins in comparatively higher yields is disclosed. Propylene is obtained in amounts higher than 20 wt. % and ethylene higher than 6 wt. %. The process is carried out in a preheated cracking reactor having a single riser and circulating an FCC catalyst. The riser is divided into three temperature zones in which different hydrocarbon feeds are introduced. An oxygenate feed is introduced in the operative top zone in the riser. Heat for the endothermic cracking is obtained by the exothermic reaction of converting the oxygenate feed into gas and/or from a regenerator in which the spent FCC catalyst is burnt.