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Parallel hybrid multistage air preheater

An air preheater, hybrid technology, applied in the field of parallel hybrid multi-stage air preheater, can solve the problem that the boiler flue heat can not be fully utilized, etc., to be beneficial to heat absorption, reduce deficiency, and improve low temperature resistance The effect of corrosion performance

Active Publication Date: 2014-02-19
SHANGHAI FUBO ENVIRONMENTAL PROTECTION EQUIP
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Problems solved by technology

[0009] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a parallel hybrid multi-stage air preheater, which is used to solve the defects in the operation of the air preheater in the prior art, and the heat at the tail of the boiler flue is not sufficient. problem of use

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  • Parallel hybrid multistage air preheater
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  • Parallel hybrid multistage air preheater

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[0034] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0035] see Figure 1 to Figure 4 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the sa...

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Abstract

The invention provides a parallel hybrid multistage air preheater which is arranged in a boiler flue. The multistage air pre-heater comprises a tubular air preheater and a rotary air preheater, the tubular air preheater is disposed in front of the rotary air preheater in a smoke flow direction, and an air entry pipeline of the tubular air preheater and an air entry pipeline of the rotary air preheater are connected in a boiler air supply system in parallel. The parallel hybrid multistage air preheater adopts a combinational design of the tubular air preheater and the rotary air preheater, advantages of the tubular air preheater and the rotary air preheater are better displayed. And meanwhile, two kinds of air preheaters are connected on the boiler air supply system in parallel, the parallel hybrid multistage air preheater is beneficial for heat absorption of the boiler air supply system, waste heat of a tail flue of the boiler is utilized at a maximum level, and low-temperature and corrosion resistance performances of the whole multistage air preheater are improved.

Description

technical field [0001] The invention relates to the field of power plant auxiliary equipment, in particular to a parallel hybrid multistage air preheater. Background technique [0002] In power plant boilers, air preheaters are used after the economizer, and tube, plate, rotary or heat pipe air preheaters are used to recover part of the heat of the flue gas, reduce the exhaust gas temperature, and enhance combustion ignition and combustion process, improve boiler efficiency and save fuel. Air preheaters have become an indispensable heating surface for power plant boilers. [0003] The tubular air preheater is a structural form often used in small units. It is composed of many parallel and staggered steel pipes, and the two ends of the pipes are welded with the tube sheets to form a cubic box with a certain heating surface. In order to make the air cross flow multiple times, an intermediate tube sheet is often installed, and the intermediate tube sheet is fixed on the indi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L15/00
CPCY02E20/34
Inventor 程迪
Owner SHANGHAI FUBO ENVIRONMENTAL PROTECTION EQUIP
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