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Biomass boiler capable of realizing combined combustion of synthesis gas and semicoke

A biomass boiler and synthesis gas technology, which is used in combustion equipment, the manufacture of combustible gas, the combustion of solid fuels, etc., can solve the problem of increased heat loss, low thermal efficiency of biomass boilers, and no consideration of the impact of semi-coke yield on combustion efficiency. and other problems to achieve the effect of solving low thermal efficiency and reducing ash corrosion

Active Publication Date: 2011-11-30
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a biomass boiler that can realize the combined combustion of syngas and semi-coke, so as to solve the problem that the existing biomass boiler does not consider the influence of the semi-coke yield on the combustion efficiency, which causes the heat loss of incomplete combustion to increase. The problem of low thermal efficiency of biomass boilers

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  • Biomass boiler capable of realizing combined combustion of synthesis gas and semicoke
  • Biomass boiler capable of realizing combined combustion of synthesis gas and semicoke

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specific Embodiment approach 1

[0012] Specific implementation mode one: as figure 1As shown, a biomass boiler that can realize the combined combustion of syngas and semi-coke described in this embodiment includes a boiler body 17, a chain grate 18, a plurality of air chambers, a silo 3, a biomass gasification chamber 6, The gasification air chamber 8 and steam enter the pipe 7, and the inner cavity of the boiler body 17 is the furnace 16; the biomass boiler also includes a primary feeder 1, a secondary feeder 2, a semi-coke combustion chamber 15 and a syngas outlet Pipe 4; the biomass gasification chamber 6 is arranged at the inlet end of the boiler body 17, the semi-coke combustion chamber 15 is arranged between the biomass gasification chamber 6 and the boiler body 17, and the semi-coke combustion chamber 15 communicates with the furnace 16, and the chain The fire grate 18 is arranged under the biomass gasification chamber 6, the semi-coke combustion chamber 15 and the boiler main body 17, and the gasific...

specific Embodiment approach 2

[0013] Specific implementation mode two: as figure 1 As shown, the side wall of the biomass gasification chamber 6 in this embodiment is provided with a cavity 5 conforming to the side wall, and the cavity 5 is used to generate atomized steam. The cavity 5 is called an air interlayer, that is, the jacket of the biomass gasification chamber is composed of inner and outer furnace walls, with an air interlayer in the middle, and an atomizing nozzle connected to the water inlet pipe is arranged on the inner side of the outer furnace wall. The vaporized water vapor is sprayed into the air interlayer, and the heat generated by the partial combustion of the fuel in the gasification combustion chamber is used to increase the temperature of the inner layer of the jacket, and the fine water mist generated by the atomizing nozzle directly contacts the inner furnace wall of the jacket. Water vapor is generated, and the water is sprayed into the biomass fuel in the gasification air chamber...

specific Embodiment approach 3

[0014] Specific implementation mode three: as figure 1 As shown, the plurality of air chambers in this embodiment are composed of the first air chamber 9, the second air chamber 10, the third air chamber 11 and the fourth air chamber 12; the first air chamber 9, the second air chamber 10. The third air chamber 11 and the fourth air chamber 12 are arranged sequentially along the furnace 16 from the inlet end to the outlet end. Such setting can fully provide the air required for the combustion of syngas and semi-coke to the furnace. Other components and connections are the same as those in the first embodiment.

[0015] Specific implementation mode four: as figure 1 As shown, in this embodiment, a secondary air inlet 13 is provided at the rear of the boiler body 17, and the secondary air inlet 13 is used to provide the furnace 16 with the air required for combustion, which can further improve the combustion efficiency. Other compositions and connections are the same as those ...

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Abstract

The invention provides a biomass boiler capable of realizing combined combustion of synthesis gas and semicoke and relates to the biomass boiler. The biomass boiler aims to solve the problem that the conventional biomass boiler does not take the influences of semicoke yield on combustion efficiency into consideration and therefore causes increased heat loss due to imperfect combustion and reducesthe heat efficiency of the biomass boiler. A semicoke combustor is arranged between a biomass vaporizing chamber and the main body of the boiler; the semicoke combustor is communicated with a hearth;one end of a synthesis gas outlet pipe is communicated with the inner cavity of the biomass vaporizing chamber through a synthesis gas outlet, and the other end of the synthesis gas outlet pipe is communicated with the hearth; a storage bin is arranged above the biomass vaporizing chamber and the semicoke combustor; a biomass fuel in the storage bin enters the biomass vaporizing chamber through aprimary feeder; and the biomass fuel in the storage bin enters the semicoke combustor through a secondary feeder. The biomass boiler is suitable for combusting biomass fuels of various particle sizesand greatly improves combustion efficiency.

Description

technical field [0001] The invention relates to a biomass boiler, in particular to a biomass boiler capable of realizing the combined combustion of syngas and semi-coke, and belongs to the technical field of biomass boilers. Background technique [0002] Biomass energy is a renewable energy derived from solar energy, and it is also one of the earliest energy sources used by humans. It has the advantages of wide distribution, renewable, low cost, and low pollution. However, due to the low energy density of biomass energy, its application efficiency is very low. Therefore, it has not been widely used in daily life and industrial production. With the shortage of energy and the deterioration of the environment, people pay more attention to the application research of biomass energy. [0003] In modern biomass energy application technology, it mainly includes: biochemical conversion method and thermochemical conversion method. Among them, the thermochemical method is easier to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23B40/00C10J3/20
CPCY02P20/10
Inventor 李炳熙李洪涛张亚宁
Owner HARBIN INST OF TECH
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