East China University of Science and Technology

Praxair Technology, Inc.

Zhenghua Dai

Yifei Wang

Guangsuo Yu

Xin Gong

Fuchen Wang

Haifeng Liu

Weifeng Li

Qinfeng Liang

Xiaolei Guo

Xueli Chen

Zunhong Yu

Zhijie Zhou

Tao Wang

Jie Zhang

William John Mahoney

Robert J Churpita

Sabuj Halder

Yi Ma

Xingjun Wang

Christopher Herby

William Jeffrey Wilson

Qinghua Guo

Zhuoyong Yan

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.

Hot oxygen nozzle and uses thereof in gasifiers

Disclosed is a multi-burner gasification reactor for gasification of slurry or pulverized hydrocarbon feed materials and industry applications thereof. Burners are disposed on the periphery or top of a gasification reactor vessel, wherein the side burners are at a small downward angle relative to the horizontal plane, which can prolong the life of refractory bricks. The operating pressure of the gasification reactor is 0.1&#x2dc;12 MPa, and the operating temperature thereof is 1350&#xb0; C.&#x2dc;1700&#xb0; C. The gasification reactor is applicable to a hot-wall lining as well as a cold-wall lining. The notable advantages of the gasification reactor are carbon conversion is high and can reach 99%, and the effective gas content is high; specific coal consumption and specific oxygen consumption are low; and it is applicable to a large coal gasification plant that processes above 3000 tons of coal per day.

Multi-burner gasification reactor for gasification of slurry or pulverized hydrocarbon feed materials and industry applications thereof

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

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

Growing community of inventors

Shanghai, China

Zhenghua Dai