Fire grate structure of coal-fired boiler

A technology for coal-fired boilers and grates, which is applied in the direction of grates, combustion methods, and combustion equipment. Small heat loss, reasonable heating effect

Inactive Publication Date: 2010-12-22
JIANGSU TAIHU BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The structure of the grate of the existing coal-fired boiler, the combustion of the fuel layer of the grate is carried out along the length direction of the grate, and the grate is generally divided into an ignition zone, a combustion zone, and a burnout zone. Uneven combustion of the exhaust structure coal in each section will easily cause the temperature of the furnace to drop, the heat loss of exhaust smoke will be large, and energy will be wasted

Method used

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  • Fire grate structure of coal-fired boiler
  • Fire grate structure of coal-fired boiler

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Embodiment Construction

[0008] See figure 1 , which includes a fire grate 1, a front arch 2 is arranged above the front section of the fire grate 1, and a rear arch 3 is arranged on the rear section. The fire grate includes an ignition area 4, a combustion area 5, and a burnout area 6. A high-temperature hot air device 7 is installed below the 4, a low-temperature cold air device 8 is installed below the combustion zone 5 of the fire grate, and a high-temperature hot air device 9 is installed below the burnout zone 6 of the fire grate. The air outlets of the high-temperature hot air devices 7 and 9 face the ignition zone 4 and the burnout area 6 respectively, and the air outlets of the low-temperature cold air device 8 face the combustion zone 5 .

[0009] Its working principle is as follows: the ignition point of coal is high, and the flame radiation is relatively weak, introducing high-temperature hot air in the ignition zone 4 can shorten the preheating time, allowing the volatilization of the coa...

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Abstract

The invention provides a fire grate structure of coal-fired boiler, achieving the aims that coal is uniformly burned in each region, temperature of hearth is high, heat loss owning to exhaust gas is less and energy source is saved. The fire grate structure comprises a fire grate, a front arch is arranged above the front section of the fire grate, the rear section is provided with a rear arch, the fire grate comprises an ignition region, a combustion region and a burn-off region; wherein a high temperature hot air device is arranged below the ignition region of the fire grate, a low temperature cold air device is arranged below the combustion region of the fire grate, and a high temperature hot air device is arranged below the burn-off region of the fire grate.

Description

technical field [0001] The invention relates to the structural technical field of industrial boilers, in particular to the fire grate structure of coal-fired boilers. Background technique [0002] The structure of the grate of the existing coal-fired boiler, the combustion of the fuel layer of the grate is carried out along the length direction of the grate, and the grate is generally divided into an ignition zone, a combustion zone, and a burnout zone. Uneven combustion of exhaust structure coal in each section will easily cause the temperature of the furnace to drop, the heat loss of exhaust smoke will be large, and energy will be wasted. Contents of the invention [0003] In view of the above problems, the present invention provides a fire grate structure for a coal-fired boiler, which can make the combustion of coal uniform in each section, make the furnace temperature high, reduce the heat loss of exhaust smoke, and save energy. [0004] The fire grate structure of a...

Claims

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Application Information

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IPC IPC(8): F23H11/10
Inventor 纪晓敏张涛陈弘
Owner JIANGSU TAIHU BOILER
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