Device for protecting air preheater against blockage by combining sound wave and hot air

An air preheater, the first sound wave technology, applied in the direction of cleaning heat transfer devices, lighting and heating equipment, combustion product treatment, etc., can solve the problems of unresolved blockage, high running resistance, high energy consumption, etc., to overcome the prevention and control Incomplete plugging technology, improve mass transfer and heat transfer efficiency, and make use of the effect of mass transfer and heat transfer
CN110454807AInactive Publication Date: 2019-11-15NANJING CHANGRONG ACOUSTIC INC +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING CHANGRONG ACOUSTIC INC
Publication Date
2019-11-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a device for protecting an air preheater against blockage by combining sound wave and hot air. The device comprises a three-branch-bin rotary air preheater, wherein a first sound wave soot blower is arranged on one side of the top of the three-branch-bin rotary air preheater, an air leakage side collecting cover is arranged on the other side of the top of the three-branch-bin rotary air preheater, an air inlet air collecting cover is arranged at the bottom of the three-branch-bin rotary air preheater, a second sound wave soot blower is arranged on the air inlet air collecting cover, the air leakage side collecting cover is connected with the input end of a circulating fan through an air leakage side collecting pipeline, the output end of the circulating fan is connected with a circulating flue gas spraying pipe through a circulating flue gas pipeline, and the circulating flue gas spraying pipe is connected with the air inlet air collecting cover. According to the device, the NH4HSO4 and the fly ash scale layer which are condensed in the flue gas are released through the combination of high intensity sound wave and hot air circulation, the temperature of thecold end of the air preheater is further increased through the hot air recirculation, so that the problems that the pressure difference between the inlet and outlet of the air preheater is gradually increased and the blockage is serious are solved.
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Description

technical field

[0001] The invention relates to a device for preventing blockage of an air preheater and low-temperature corrosion of a heat exchange surface combined with sound waves and hot air, and relates to the technical fields of blockage, corrosion prevention and control of an air preheater of a boiler in a coal-fired power plant, and air preheater transformation. Background technique

[0002] In recent years, with the rapid development of modernization, under such a large environment, the construction of power plants has faced great challenges. In order to improve the quality of boilers, it is necessary to continuously strengthen the energy-saving transformation of boiler rotary air preheaters. Among them, the energy-saving transformation of the rotary air preheater of the boiler is one of the main development prospects. During the operation of the air preheater, there will be serious problems such as large air leakage, high running resistance and ABS blockage. [00...

Claims

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