Steam boiler capable of achieving partial gasification combustion of coal

A technology for steam boilers and boiler bodies, which is applied to steam boilers, solid fuel combustion, combustion chambers, etc., can solve the problems of poor boiler fuel adaptability, high requirements on the shape of the furnace arch, and high carbon content in ash and slag. Adaptability, avoid black smoke, reduce the effect of carbon content in ash

Inactive Publication Date: 2015-08-26
HARBIN HUASHI HAIDE TECH DEV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the inherent defects of the existing chain furnaces that use pure solid fuel and carry out single-sided ignition, such as high requirements on the shape of the furnace arch in boiler design, ...

Method used

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  • Steam boiler capable of achieving partial gasification combustion of coal
  • Steam boiler capable of achieving partial gasification combustion of coal
  • Steam boiler capable of achieving partial gasification combustion of coal

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Embodiment Construction

[0028] see Figure 1-Figure 4 In this embodiment, the steam boiler that can realize the partial gasification and combustion of coal includes a combustion device 9, a boiler body 42, a coal economizer 14, and an air preheater 29. Between the economizer 14 and the air preheater 29, a Dust collector 28.

[0029] The combustion equipment 9 includes a coal scuttle 1, a pre-combustion chamber 4, a pre-combustion chamber flue 2, a coal drop channel 19 in front of the coal scuttle, a coal drop channel 18 behind the coal scuttle, a coal gate 3, a chain grate 5, a pre-combustion Chamber air chamber 6, air chamber 7, steam nozzle 8. Wherein, a pre-combustion chamber 4 is arranged inside the coal hopper 1, and the pre-combustion chamber 4 is located above the chain grate 5. Below the chain grate 5 below the pre-chamber 4, a pre-chamber air chamber 6 is arranged to provide air for combustion of fuel on the chain grate 5 in the section where the pre-chamber 4 is located. A pre-combustion...

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Abstract

The invention relates to a steam boiler capable of achieving partial gasification combustion of coal. The steam boiler comprises a chain grate and a boiler body. The boiler body is located over the chain grate, a plurality of air chambers are arranged below the chain grate and sequentially arranged in the conveying direction of the chain grate, and the air chambers are located under a combustion chamber of the boiler body, wherein a steam spray pipe is arranged on the air chamber at the head end, a middle arch is further arranged in the combustion chamber, the combustion chamber is divided into a front combustion chamber body and a rear combustion chamber body through the middle arch, the front combustion chamber body is located over the air chamber at the head end, and the rear combustion chamber body is located over the rest of the air chambers. By means of the steam boiler, partial gasification combustion of the coal is achieved, the phenomenon of black smoke emitted from the boiler is avoided, and the carbon content of ash of the boiler can be reduced. Furthermore, the temperature of a coal layer can be reduced, and NOx can be reduced.

Description

technical field [0001] The invention relates to a steam boiler, in particular to a steam boiler capable of partially gasifying coal and burning it efficiently. Background technique [0002] In the first 50 years of the 21st century, my country's energy development trend will still be dominated by fossil fuels. With the increasing shortage of oil and natural gas resources and the further development of clean coal technology, the importance and status of coal will gradually increase. According to the state of resources in our country and the proportion of coal in the energy production and consumption structure, the energy structure with coal as the main body will not change for quite a long time. [0003] The equipment that converts the chemical energy contained in coal into heat energy is the boiler. Boilers can be divided into boiling water boilers, hot water boilers, steam boilers, heat transfer oil boilers, hot air boilers, etc. according to their functions. Among them, ...

Claims

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Application Information

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IPC IPC(8): F22B31/00F23L7/00F23B10/00F23M5/06F23M5/08F22B31/08
Inventor 王纲刘伟
Owner HARBIN HUASHI HAIDE TECH DEV
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