Hot oxygen nozzle and uses thereof in gasifiers

US9481839B2 · kind B2 · utility

Assignees

• Praxair Technology, Inc. · US
• East China University of Science and Technology · CN

Inventors

• Qinghua Guo · Shanghai, CN
• Tao Wang · Beijing, CN
• Zhenghua Dai · Shanghai, CN
• Guangsuo Yu · Shanghai, CN
• Xin Gong · Qingdao, CN
• Fuchen Wang · Shanghai, CN
• Haifeng Liu · Hai'an, CN
• Yifei Wang · Pomona, US
• William John Mahoney · East Aurora, US
• Sabuj Halder · Monroeville, US
• Yi Jie Ma · Beijing, CN
• Jie Zhang · Suzhou, CN
• Zhijie Zhou · Shanghai, CN
• Robert J. Churpita · Niagara Falls, US
• Christopher Herby · Buffalo, US
• William Jeffrey Wilson · North Tonawanda, US
• Zhuoyong Yan · Shanghai, CN

Key dates

• Filing date: Nov 26, 2013
• Grant date: Nov 1, 2016
• Expiry date: Nov 26, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E50/30
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A hot oxygen nozzle and uses thereof in a gasifier, the hot oxygen nozzle comprising an outer-ring spout, a middle-ring spout, an inner-ring spout, and a central spout all sequentially and coaxially disposed, and a cooling system; the gasifier is an entrained-flow gasifier provided with one or more nozzles on a certain plane or a plurality of planes at the top or on the periphery of the gasifier body. The nozzle has a simple structure and is easy to make and maintain. A fuel gas passage is disposed inside the nozzle. Oxygen can be heated by a combustion of fuel gas; and high-temperature and high-speed oxygen can directly ignite carbonaceous materials such as coal-water slurry and coke-oven gas. The present invention can be applied in a gasifier and then in the final process of synthesis gas preparation.