Soot blowing system and method used for boiler horizontal flue

A boiler horizontal flue and soot blowing system technology, applied in the field of coal-fired boilers, can solve the problems of limited installation space of the soot blowing system, ash accumulation, insufficient margin of compressed air source, etc., to solve the problem of ash accumulation , easy to use, simple structure

Pending Publication Date: 2017-09-08
HANGZHOU HUADIAN ENERGY ENG
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Problems solved by technology

As a result, when the soot blowing system uses compressed air as the soot blowing medium, some power plants can effectively solve the problem of coal-fired boiler horizontal smoke due

Method used

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  • Soot blowing system and method used for boiler horizontal flue
  • Soot blowing system and method used for boiler horizontal flue

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0019] Example.

[0020] see Figure 1 to Figure 2 , The soot blowing system used in the boiler horizontal flue in this embodiment includes a compressed air main pipe 1 and several soot blowing units.

[0021] Each soot blowing unit in this embodiment includes a compressed air branch pipe 2, a manual gate valve 3, a solenoid valve 4, a pressure gauge 8, several air caps 5 and a plurality of anti-wear tiles 6, the compressed air branch pipe 2 and the compressed air main pipe 1 connection, manual gate valve 3, solenoid valve 4 and pressure gauge 8 are all installed on the compressed air branch pipe 2 to realize the function of separate soot blowing for each compressed air branch pipe 2 to reduce the amount of compres...

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Abstract

The invention relates to a soot blowing system and method used for a boiler horizontal flue. The soot blowing system and method are mainly used in a coal-fired boiler. The soot deposition phenomenon is serious at the furnace arch of the coal-fired boiler horizontal flue, and no effective solution exists at present. The soot blowing system comprises a compressed air main pipe and a plurality of soot blowing units. Each soot blowing unit comprises a compressed air branch pipe, a manual brake valve, an electromagnetic valve, a pressure gauge, a plurality of air caps and a plurality of anti-abrasion tiles. The soot blowing system is characterized in that the compressed air branch pipes are connected with the compressed air main pipe; the manual brake valves, the electromagnetic valves and the pressure gauges are all installed on the compressed air branch pipes so that each compressed air branch pipe can achieve the function of blowing soot alone; the manual brake valves, the electromagnetic valves and the pressure gauges are all located outside the boiler; the air caps are directly fixed to two adjacent fins of two adjacent water cooling wall pipes in the boiler; the air caps and the compressed air branch pipes are connected; and the anti-abrasion tiles are installed on the water cooling wall pipes in a sleeving mode. According to the soot blowing system and method used for the boiler horizontal flue, adjusting is convenient, and the soot blowing effect is good.

Description

technical field [0001] The invention relates to a soot blowing system and a soot blowing method for a horizontal flue of a boiler, which are mainly used in coal-fired boilers. Background technique [0002] Coal-fired boiler horizontal flue flame corners usually have serious ash deposits. Severe ash deposits not only reduce the heat exchange surface between the flue gas and the heat exchanger, but also reduce the heat exchange effect of the heat exchanger, and also change the smoke flow field. Aiming at the serious ash accumulation at the flame angle of the horizontal flue of the coal-fired boiler, many solutions have emerged at home and abroad. [0003] For example, the Chinese patent whose publication number is CN104180379A discloses a soot blowing method and device for a π-type boiler horizontal flue, which consists of a temperature measurement system, a control module and a soot blowing system. The first temperature detector and the second temperature detector on the du...

Claims

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Application Information

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IPC IPC(8): F23J3/02
CPCF23J3/026
Inventor 宁玉琴孙少鹏邱子朝朱斌帅邓华蒋文许青云
Owner HANGZHOU HUADIAN ENERGY ENG
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