Multi stage selective catalytic cracking process and a system for producing high yield of middle distillate products from heavy hydrocarbon feedstocks

US7029571B1 · kind B1 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Debasis Bhattacharyya · Faridabad, IN
• Asit Kumar Das · Faridabad, IN
• Arumugam Velayutham Karthikeyani · Faridabad, IN
• Satyen Kumar Das · Barwala, IN
• Pankaj Kumar Kasliwal · Faridabad, IN
• Manoranjan Santra · Barwala, IN
• Latoor Lal Saroya · Faridabad, IN
• Jagdev Kumar Dixit · Faridabad, IN
• Ganga Sanker Mishra · Barwala, IN
• Jai Prakash Singh · Barwala, IN
• Satish Makhija · Barwala, IN
• Sobhan Ghosh · Faridabad, IN

Key dates

• Filing date: Feb 16, 2000
• Grant date: Apr 18, 2006
• Expiry date: Feb 16, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G51/026
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

According to this invention, there is provided a process and apparatus for catalytic cracking of various petroleum based heavy feed stocks in the presence of solid zeolite catalyst and high pore size acidic components for selective bottom cracking and mixtures thereof, in multiple riser type continuously circulating fluidized bed reactors operated at different severities to produce high yield of middle distillates, in the range of 50–65 wt % of fresh feed.