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New type reflection section burned half coal gas fuel coal fired boiler

A coal-fired boiler and coal gasification technology, which is applied to combustion equipment, solid fuel combustion, lighting and heating equipment, etc., can solve the problems of increased power consumption, easy burning of air distribution devices, and large boiler body, so as to prevent Air pollution, good smoke exhaust effect, high boiler efficiency

Inactive Publication Date: 2009-06-17
大连七六〇研究所六〇〇工厂
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation of the vertical double-layer grate counter-burning furnace is complicated; the combustion has a certain period; the boiler body is large and the steel consumption is large; the water tube grate is easy to scale and other disadvantages
The air distribution device of the vertical normal firing combined with secondary air is easy to burn out; when the boiler load changes, the air supply volume does not change, resulting in an excessive air coefficient and a decrease in thermal efficiency; the boiler uses a blower, which increases power consumption; it cannot be used during operation. Add too much coal, otherwise there will be disadvantages such as black smoke

Method used

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  • New type reflection section burned half coal gas fuel coal fired boiler

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Embodiment Construction

[0012] Typical product LSG0.3-0.4-AII type coal-fired steam boiler, the lower part of the reflective arch is 560mm away from the grate, and the angle with the horizontal is 17°; the bottom of the partition plate is 280mm away from the grate, and the angle between the vertical part and the axis is 18°; The throat formed by the arch and the dividing plate is 120mm.

[0013] In actual application, the boiler adopts natural ventilation, and the chimney height is 14 meters. When the boiler is running, the coal is fed from the upper furnace door 13, and the volatile matter is precipitated under the heating of the high-temperature coke in the lower part. The volatile matter enters the high-temperature furnace from the bottom of the partition plate 12, and the air entering the lower furnace door 16 is mixed with the coke in the lower part of the furnace. Contact combustion, coke combustion does not produce black smoke that pollutes the environment. Part of the excess air entering the ...

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Abstract

The present invention relates to a new type reflective sectionally-burned semi-gasification coal-fired boiler. It is formed from boiler shell, flue convection bank, upper door, middle door, lower door and water pipe. In the combustion chamber a reflecting arch and a separator insert are set, and its combustion zone is divided into two portions by separator insert. Said invention is small in volume and its boiler efficiency is high.

Description

Technical field [0001] The invention relates to a vertical boiler, in particular to a semi-gasified coal-fired boiler with reflective arches and partition plates to realize zoned combustion. Background technique [0002] Most of the existing small coal-fired boilers adopt the structure of vertical double-layer grate reverse combustion or vertical normal combustion combined with secondary air. There are many problems in these two structures. The operation of the vertical double-layer grate counter-burning furnace is complicated; the combustion has certain periodicity; the boiler body is large and the steel consumption is large; the water tube grate is easy to scale and other shortcomings. The air distribution device of the gas generator with vertical normal firing combined with secondary air is easy to burn out; when the boiler load changes, the air supply volume does not change, resulting in an excessive air coefficient and a decrease in thermal efficiency; the boiler uses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23B80/00F23B99/00
Inventor 刘长征王凤信于义信孙志刚
Owner 大连七六〇研究所六〇〇工厂