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Temperature control method for fixed bed gasification furnace oxidation zone and gasification furnace

A fixed-bed gasifier and oxidation zone technology, applied in the field of coal gasification, can solve the problem of steam waste

Inactive Publication Date: 2009-07-22
刘宏建 +1
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  • Application Information

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Problems solved by technology

[0003] In order to solve the above problems, the purpose of the present invention is to provide a fixed bed gasifier oxidation zone temperature control method and gasifier, which can solve the problem of a large amount of steam waste, and the device structure is simple, the design is reasonable and novel, and the cost is low

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  • Temperature control method for fixed bed gasification furnace oxidation zone and gasification furnace
  • Temperature control method for fixed bed gasification furnace oxidation zone and gasification furnace

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing and embodiment wooden invention is described in further detail.

[0017] The method for controlling the temperature in the oxidation zone of the fixed bed gasifier according to the present invention, the water is sent to the middle and lower part of the oxidation zone in the furnace through the water inlet pipe on the side of the lower part of the gasifier, and the heat is absorbed in the middle and lower part of the oxidation zone in the form of atomization And vaporization, so that the temperature of the oxidation zone is controlled below the ash melting point of the raw coal.

[0018] Such as figure 1 , 2 Shown: the fixed-bed gasifier, which includes a furnace body with a water jacket 11, a coal inlet 1, a crude gas outlet 2, an ash outlet 9, and a grate 7, and the top of the furnace body is a coal inlet 1 , the bottom end is the ash discharge port 9, the furnace body is the furnace 12, the bottom of the furnace 12 is ...

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Abstract

The invention belongs to the gasification technical field, which discloses a fixed bed gasifier oxidation zone temperature control method; water is delivered to the lower part of the oxidation zone in the hearth through an inlet tube on the side face of the lower part of the gasifier, and is vaporized by absorbing heat at the lower part of the oxidation zone in an atomization way, so that the temperature in the oxidation zone is controlled below the ash fusion point of the coking coal; and a fixed bed gasifier is to implement the above method; a spraying temperature control device is arranged between the lower part of the oxidation zone in the hearth and the ash zone; the water sprayed from the annular spraying pipe of the spraying temperature control device is gasified by absorbing the heat, thus reducing the steam dosage of the gasification agent; the gasifier has simple structure, easy operation, energy conservation and environmental protection, and is applicable to systems of coal gasification power generation, coal gasification for urban gas preparation, chemical synthesis, etc.

Description

technical field [0001] The invention belongs to the technical field of coal gasification, in particular to a method for controlling the temperature of an oxidation zone of a fixed-bed gasification furnace and the gasification furnace. Background technique [0002] At present, both the atmospheric pressure fixed bed gasifier and the pressurized fixed bed gasifier (Lurgi furnace) use steam / oxygen or air as the gasification agent, coal is added from the coal inlet on the top of the gasifier, and the gasification agent is After the bottom of the gasification furnace enters the grate, it enters the gasification furnace through the pores of the grate cloth, and the coal is in countercurrent contact with the gasification agent, and the coal passes through the drying and preheating zone, the dry distillation layer, and the gasification zone of the gasifier from top to bottom. (reduction zone), combustion zone (oxidation zone), ash layer, and finally ash is discharged out of the furn...

Claims

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Application Information

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IPC IPC(8): C10J3/20
CPCY02E20/18Y02P20/10
Inventor 刘宏建高恒刘晨希
Owner 刘宏建
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