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Parallel combined-type air preheating system

A technology of air preheating and air preheater, applied in the energy field, can solve the problems of exhaust gas temperature affecting boiler efficiency, low exhaust gas temperature, cold end corrosion, etc., achieve high boiler comprehensive operating efficiency and reduce boiler exhaust gas temperature , Improve the effect of comprehensive temperature

Pending Publication Date: 2019-12-31
SHANGHAI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the exhaust gas temperature of the current power generation boiler is too high to affect the efficiency of the boiler, and the exhaust gas temperature is too low to cause corrosion at the cold end

Method used

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  • Parallel combined-type air preheating system

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Embodiment Construction

[0016] In order to make the present invention more comprehensible, the preferred embodiments are described in detail as follows in conjunction with the accompanying drawings;

[0017] Such as figure 1 As shown, the present invention provides a parallel combined air preheating system, comprising a main flue 7, a main air duct 9, a rotary air preheater 1, a bypass flue 8, a bypass air duct 10, a tubular air Preheater 2, main flue adjustment damper door 3, bypass flue adjustment damper door 4, main air duct adjustment damper door 5 and bypass air duct adjustment damper door 6; main flue 7 passes through the main flue The channel adjustment baffle door 3 is connected with the rotary air preheater 1, and the rotary air preheater 1 is provided with a flue gas outlet; the main flue 7 channel is provided with a bypass flue 8, and the bypass flue 8 passes through the bypass flue. The flue flue adjustment baffle door 4 is connected with the tubular air preheater 2, which is provided wi...

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Abstract

The invention provides a parallel combined-type air preheating system which belongs to the technical field of energy sources. The system comprises a main flue, a main air duct, a revolution air preheater, a bypass flue, a bypass air duct, a tube-type air preheater, a main flue adjustment baffle door, a bypass flue adjustment baffle door, a main air duct adjustment baffle door and a bypass air ductadjustment baffle door. Hot smoke passes through the revolution air preheater and the tube-type air preheater respectively for heat exchange with air, so the smoke temperature is brought down and aircan be heated. By the adjustment baffle doors on a pipeline, smoke flow rates and air flow rates can be distributed and adjusted, so a heat exchange amount and temperature of smoke and air at an outlet can be adjusted. The structure is rational; the system is reliable; comprehensive running efficiency of a boiler is high; adjustment is flexible; and energy saving effects are significant.

Description

technical field [0001] The invention relates to a parallel combined air preheating system, which belongs to the field of energy technology. Background technique [0002] In order to improve the economy of the generating set and achieve the purpose of energy saving and emission reduction. Most domestic generator sets have undergone energy-saving technical transformation. Among them, due to the current situation of some domestic power generation boilers, the exhaust gas temperature is too high to affect the efficiency of the boiler, so it is necessary to carry out energy-saving technical transformation to reduce the exhaust gas temperature and improve efficiency. Depending on the size of the capacity, the current power boilers only use a single air preheater. Moreover, because the heat exchange amount in the air preheater cannot be adjusted, there is often a situation where the high-load exhaust gas temperature is high, and the high exhaust gas temperature affects the boiler...

Claims

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Application Information

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IPC IPC(8): F23L15/04F23J15/06
CPCF23J15/06F23L15/04Y02E20/34
Inventor 蒋晓锋朱一飞陶丽黄辉武张贤刘明勇曹建文刘琛
Owner SHANGHAI POWER EQUIP RES INST
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