Automatic cleaning device and method for cleaning heat exchange surface of power plant boiler economizer
A technology for automatic cleaning and power plant boilers, which is applied in the direction of combustion methods, removal of solid residues, lighting and heating equipment, etc., which can solve the problems of reduced heat transfer effects and achieve the effects of reduced energy consumption and high thermal efficiency
Active Publication Date: 2017-01-25
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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Problems solved by technology
[0006] The automatic cleaning device of the present invention takes the economizer as the research object, and aims at the problem that the heat exchange effect of the heat exchange equipment in the convection flue is reduced due to a large amount of dust accumulation, which affects the normal operation of the heat exchange equipment, and can remove the dust accumulation on the heating surface to ensure Heat exchange equipment has better heat exchange effect
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[0022] Such as Figure 1 to Figure 2 The shown automatic cleaning device is used to clean the heat exchange surface of the economizer of the power station boiler. The boiler can be any type of boiler. The economizer 3 is set in the tail flue of the coal-fired power plant, and the flue gas from the economizer 3 enters the SCR denitrification system 4. The automatic cleaning device includes a plurality of electromagnets, iron cleaning brushes and a switch cabinet, and a control device is arranged in the switch cabinet.
[0023] The automatic cleaning device in the present embodiment comprises electromagnet, iron cleaning brush 11 and control device, and electromagnet and cleaning brush 11 are a plurality of, and electromagnet is cuboid, and electromagnet and cleaning brush 11 complete sets are arranged, and in each cover There are two electromagnets, the two electromagnets are set at the same height, and they are vertically attached to the front and rear walls of the boiler eco...
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The invention discloses an automatic cleaning device and an automatic cleaning method for cleaning the heat exchange surface of a power station boiler economizer. The automatic cleaning device comprises a plurality of electromagnets, a plurality of iron cleaning brushes and a control device, wherein the electromagnets are vertically attached to the front and back walls of the boiler economizer in a symmetrical mode, each electromagnet is connected with the control device, the voltage and current of the electromagnets and the interval time for starting the electromagnets every time are controlled by the control device, so as to control electromagnetic force generated by the electromagnets, the cleaning brushes sleeve a straight pipe section arranged in a transverse direction in the economizer and are within the range of the electromagnetic force of the electromagnets, and the cleaning brushes can slide along the straight pipe section of the economizer under the action of the electromagnetic force of the electromagnets, so as to clean accumulated dust on the surface of the straight pipe section of a heat exchanger, guarantee higher heat efficiency of the heat exchange surface of the economizer and reduce energy consumption. Additionally, the invention discloses the automatic cleaning method.
Description
technical field [0001] The invention belongs to the emission reduction technology of coal-fired boilers, and specifically refers to an automatic cleaning device and method for cleaning the heat exchange surface of a power station boiler economizer. Background technique [0002] In coal-fired power plants, pulverized coal is fully combusted in the furnace, generating a large amount of flue gas, and at the same time generating granular ash or coal ash. These coal ash flows into each heating surface of the flue along with the flue gas, and some ash particles will be deposited. Dust accumulation on the heating surface is a common problem in boiler operation. The longer the time, the thicker the ash accumulation and the greater the heat transfer resistance of the pipe wall, which will weaken the heat exchange effect between the flue gas and the working fluid, and increase energy consumption; at the same time, it will affect the flow cross-sectional area of the flue gas, making ...
Claims
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IPC IPC(8): F23J3/00
Inventor 廖永进高正阳成明涛李德波赵航
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID