Annular sleeve type gas sealing device for feeding system of positive-pressure biomass gasifier and gas sealing method thereof

• Main Authors: WANG JUNFENG, LU JINXUN, JIANG XUE
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2019
• Subjects: CARBURETTING AIR OR OTHER GASES; CHEMISTRY; FUELS; LUBRICANTS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The invention provides an annular sleeve type gas sealing device for a feeding system of a positive-pressure biomass gasifier and a gas sealing method thereof. In recent years, a biomass gasificationtechnology has become increasingly mature, and a positive-pressure biomass gasification technology has its unique advantages compared with a negative-pressure gasification technology. However, the positive-pressure gasification technology requires sealing of a feeding system due to positive pressure in a furnace so as to prevent positive-pressure toxic and flammable flue gas in the furnace from entering a feeding pipe and causing the problems of leakage and poor feeding. The annular sleeve type gas sealing device of the invention comprises a feeding pipe (3); the orifice of the feeding pipe issleeved with a feeding sleeve (2); a group of cushion blocks (4) are arranged between the feeding pipe and the feeding sleeve, so slits are formed; the feeding sleeve has a group of inert gas inlet pipes (1); and the inert ga