Gasifier for organic solid waste by injection into molten iron and slag bath

US11795407B2 · kind B2 · utility

Assignee

• Qiang Niu · CN

Inventors

• Qiang Niu · Beijing, CN
• Tianjun Yang · Beijing, CN
• Min Li · Nanhu, CN
• Jianliang Zhang · Beijing, CN
• Zhancheng Guo · Beijing, CN
• Jianming Pang · Beijing, CN
• Guohua Yu · Jinan, CN
• Hongbiao Dong · Felton, GB

Key dates

• Filing date: Mar 19, 2020
• Grant date: Oct 24, 2023
• Expiry date: Dec 13, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A gasifier for organic solid waste by injection into molten iron and slag bath includes a gasification furnace, a liquid level adjusting furnace and a slag discharge and heat exchange shaft furnace. The liquid level adjusting furnace, in communication with the bottom of the gasification furnace, contains 1200-1700° C. molten iron-based alloy liquid, which is covered with molten liquid slag layer. When gas pressure above or liquid volume in the liquid level adjusting furnace increases, liquid level of the molten liquid in the gasification furnace rises simultaneously. A particle material injection lance is immersed, through which organic particles to be gasified are blown into molten bath, and oxygen gas or oxygen-enriched air as gasifying agent is blown into the melt at the same time. Organic substance is gasified into CO-rich and H2-rich syngas, and most of inorganic substance enters molten slag and is discharged termly.