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Experimental Study on a Hot‐Oxygen Burner in a Bench‐Scale Gasifier |
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| Authors: | Qinghua Guo Yan Gong Guangsuo Yu Tao Wang Yi Ma Zhuoyong Yan |
| Affiliation: | 1. East China University of Science and Technology, Shanghai Engineering Research Center of Coal Gasification, Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai, China;2. Praxair (China) Investment Co. Ltd., Shanghai, China;3. Praxair Inc., Praxair Technology Center, Tonawanda, NY, USA |
| Abstract: | The direct‐ignition technology of an entrained‐flow coal‐water slurry gasifier with hot‐oxygen burner (HOB) is presented. Experimental tests were carried out using diesel oil and coal‐water slurry in a bench‐scale entrained‐flow opposed multi‐burner (OMB) gasifier. Using a CCD camera equipped with high‐temperature endoscope, flame images inside the gasifier were recorded and subsequently processed. The results show that the HOB diesel flame is more stable than the normal two‐channel burner flame typically used. Entrained‐flow coal‐water slurry gasifiers can start up using the HOB directly without a higher preheated wall temperature. An HOB can potentially save gasifier preheating time and operation costs and enables a wide range of future applications. |
| Keywords: | Coal‐water slurry Direct‐ignition technology Gasifier Hot‐oxygen burner |
