A self-produced gas combustion linkage type pyrolysis gasification device

By adopting a self-produced gas combustion-linked pyrolysis gasification device in a biomass gasification furnace, the combustor generates oxygen-free medium-temperature flue gas to control the temperature, and efficient gas treatment is achieved through a combustible gas collector and a conveying fan, the problem of difficult temperature control and high energy consumption in the prior art is solved, and efficient precipitation and resource processing of combustible gases are achieved.

CN110747010BActive Publication Date: 2025-05-27NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Patent Information

Application Number
CN201911198350.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-11-29
Publication Date
2025-05-27
Estimated Expiration
2039-11-29

AI Technical Summary

Technical Problem

Existing biomass gasifiers are difficult to control the temperature during combustion reactions, which often leads to excessive temperatures, affecting the precipitation effect of combustible gases. In addition, the gas export of conventional gasifiers requires high-power fans and consumes a lot of energy.

Method used

The self-produced gas combustion-linked pyrolysis gasification device is adopted to generate oxygen-free medium-temperature flue gas through the burner to provide a heat source for the pyrolysis furnace, form a medium temperature (570-600℃) temperature field, control the precipitation temperature, and efficient gas collection and transportation through a combustible gas collector and conveying fan.

Benefits of technology

Effectively control the precipitation temperature, ensure the precipitation effect of combustible gases, reduce the difficulty of subsequent cooling treatment, reduce energy consumption, improve work efficiency, and realize comprehensive resource processing of biomass.

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Abstract

The present invention discloses a self-produced gas combustion linkage pyrolysis gasification device, which includes a pyrolysis furnace. A grate is arranged inside the pyrolysis furnace, and the grate is an active grate. A feed inlet is provided at the pyrolysis furnace above the grate, and a closed feeder is equipped at the feed inlet. A discharge port is provided at the pyrolysis furnace below the grate, and a closed discharger is equipped at the discharge port; it also includes an anaerobic medium-temperature gas source mechanism arranged outside the pyrolysis furnace and supplying flue gas to the pyrolysis furnace. A combustible gas collector is also arranged inside the pyrolysis furnace, and the combustible gas collector is led out to the outside of the pyrolysis furnace through a gas collection pipeline; a return branch pipe is connected in parallel to the gas collection pipeline, and the return branch pipe is connected to the input pipeline of the anaerobic medium-temperature gas source mechanism. The present invention realizes the supply of anaerobic medium-temperature flue gas to the pyrolysis furnace by the combustion of self-produced gas, forms a medium-temperature temperature field inside the pyrolysis furnace, and can effectively control the precipitation temperature.
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