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

A feeding system and gasifier technology, applied in the direction of gasification device feeding tools, gasification process, granular/powdered fuel gasification, etc., can solve problems such as poor flow and leakage of feeding materials

Inactive Publication Date: 2019-01-15
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the positive pressure in the furnace, the positive pressure gasification technology requires the feeding system to be sealed to prevent the poisonous and flammable fumes in the furnace from flowing back into the feeding pipe, causing leakage and poor feeding.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A ring-type air seal device for the feeding system of a positive pressure biomass gasifier, which consists of: a feeding pipe 3, characterized in that: the mouth of the feeding pipe is covered with a feeding sleeve 2. There is a set of pads 4 between the feed pipe and the feed sleeve to form a gap. The feed sleeve has a set of inert gas inlet pipes 1, and the inert gas inlet The tube and the nozzle of the feed pipe communicate through the gap. The gas outlet of the feeding casing is set outside the mouth of the feeding pipe, and the inert gas inlet pipe is perpendicular to the feeding pipe.

Embodiment 2

[0014] The above-mentioned gas sealing method for the ring-type gas sealing device of the positive pressure biomass gasification furnace feeding system introduces a certain speed of inert gas into the positive pressure biomass gasification furnace feeding system through the inert gas inlet pipe to avoid The toxic and flammable flue gas in the positive pressure gasifier enters the feeding system and ensures the smooth feeding. The inert gas is fed into the gap between the inner feeding pipe and the casing through the surrounding inert gas inlet pipes, and the inert gas is used The pressure head and flow rate of the feed pipe are air-sealed.

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Abstract

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 gas inlet pipes communicate with the orifice of the feeding pipe via the slits. The device of the invention is applied to annular sleeve type gas sealing of the feeding systemof the positive-pressure biomass gasifier.

Description

Technical field: [0001] The invention relates to a ring-type air sealing device and an air sealing method for a feed system of a positive pressure biomass gasification furnace. Background technique: [0002] In recent years, biomass gasification technology has become more and more mature, and positive pressure biomass gasification technology has its unique advantages compared with negative pressure gasification. However, due to the positive pressure in the furnace, the positive pressure gasification technology requires the feeding system to be sealed to prevent the positive pressure in the furnace from flowing back into the feeding pipe, causing leakage and poor feeding. Invention content: [0003] In order to overcome the above-mentioned problems in the prior art, the object of the present invention is to provide a ring-type gas sealing device for the feed system of a positive pressure biomass gasifier. [0004] Above-mentioned purpose realizes by following technical sch...

Claims

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Application Information

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IPC IPC(8): C10J3/00C10J3/30C10J3/50C10J3/72
CPCC10J3/00C10J3/30C10J3/50C10J3/72C10J2200/15C10J2300/0916
Inventor 路金勋王君峰姜雪
Owner HARBIN BOILER
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