Two-stage gasification apparatus coupled with heat recovery and washing and its applications

US7794514B2 · kind B2 · utility

Assignee

• East China University of Science and Technology · CN

Inventors

• Zunhong Yu · Shanghai, CN
• Yifei Wang · Pomona, US
• Guangsuo Yu · Shanghai, CN
• Fuchen Wang · Shanghai, CN
• Xueli Chen · Zhejiang, CN
• Zhenghua Dai · Shanghai, CN
• Xiaolei Guo · Shanghai, CN
• Qinfeng Liang · Shanghai, CN
• Weifeng Li · Linxiang, CN
• Xin Gong · Qingdao, CN
• Haifeng Liu · Hai'an, CN

Key dates

• Filing date: Dec 10, 2007
• Grant date: Sep 14, 2010
• Expiry date: Mar 28, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/129
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A two-stage gasification apparatus coupled with heat recovery and washing includes a columnar shell (7), an entrained flow gasification chamber (1), a fixed bed gasification chamber (18), a waste heat boiler (19) and a gas cooling-washing chamber (14) set coaxially from top to bottom inside the columnar shell (7). Process nozzle chambers (3) are set at a sidewall and/or a top of the entrained flow gasification chamber (1), and process nozzles (2) are set in a nozzle chambers (3). A feed-in lock hopper (25) is set and a fixed bed gasification chamber (18). An eccentric grate (10) is set in the middle of a lower part of the fixed bed gasification chamber (18), and the grate is connected with an ash-pan (11), which is conjoined with a motor (36) via transmission mechanism. An inverse cone (22) is erected at an upper part of a cooling-washing chamber (14).