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Coal economizer for power station boiler

A technology for power plant boilers and economizers, which is applied to feed water heaters, lighting and heating equipment, steam generation, etc., can solve problems such as no temperature adjustment function.

Inactive Publication Date: 2013-02-06
SHANGHAI BOILER WORKS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] But the current economizer does not have the function of temperature adjustment

Method used

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  • Coal economizer for power station boiler
  • Coal economizer for power station boiler
  • Coal economizer for power station boiler

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the following examples.

[0022] The economizer system includes: the inlet header of the economizer, the heating surface of the economizer, the outlet header of the economizer, and the outlet pipeline of the economizer. The water supply pipe is connected to the inlet of the economizer inlet header.

[0023] figure 1 The dotted line area is a conventional economizer system, which can be a parallel, series or series-parallel combination system. The area surrounded by a dotted line may not only be the heating surface of the economizer, but also include headers and pipelines.

[0024] The process of the first bypass pipeline 5 starts from the water supply pipeline 4, and the process returns to the outlet pipeline 8 of the economizer. The actual process is not limited to this. After the process i...

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Abstract

The invention discloses a coal economizer for a power station boiler. The coal economizer comprises a water supply pipeline (4), an inlet header (1), a heat transfer face (2), an outlet header (3) and an outlet pipeline (8), wherein flue gas flows outside the heat transfer face to heat up water, a first bypass duct (5) which is used for connecting the water supply pipeline (4) and the outlet pipeline (8) is arranged between the water supply pipeline (4) and the outlet pipeline (8), and a bypass temperature adjusting device (9) is arranged on the first bypass duct (5). According to a system of the coal economizer, the traditional system design is improved, and the coal economizer has a function of temperature adjustment at the same time when the coal economizer can reduce the temperature of the flue gas at an outlet of the boiler and increase the water supply temperature.

Description

technical field [0001] The invention relates to a power plant boiler economizer. Background technique [0002] The economizer is the heating surface arranged in the boiler flue of the power station to heat the boiler feed water. Because it absorbs relatively low-temperature flue gas, it reduces the exhaust gas temperature of the flue gas, saves energy and improves efficiency, so it is called for the economizer. [0003] Generally, economizers can be divided into series arrangement, parallel arrangement or both series and parallel system design according to different processes. Different system designs are applied to different boiler systems, which reduce the temperature of the flue gas at the boiler outlet and heat the boiler. Boiler feed water. [0004] But no matter what kind of system mentioned above is adopted, the heating surface called the economizer through which the feed water passes is arranged in the flue, and through heat exchange from the flue gas side, that is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22D1/02
CPCF22D1/12F22D1/02
Inventor 姚丹花
Owner SHANGHAI BOILER WORKS
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