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Eastern Junggar coal concurrent boiler drainage system

A once-through boiler and drainage system technology, applied in the control system, boiler cleaning device, steam generation, etc., can solve the problems of large amount of desalted water, long cleaning time, low recycling rate, etc., and achieve faster replacement speed and shorter flushing Time, the effect of reducing dosage

Active Publication Date: 2017-03-22
XINTE ENERGY
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a Zhundong coal once-through boiler drainage system to solve the problems of large amount of desalted water, low recycling rate, and long cleaning time

Method used

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  • Eastern Junggar coal concurrent boiler drainage system

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Embodiment Construction

[0024] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The following combination figure 1 The solution of the present invention will be described in detail.

[0026] figure 1 The schematic diagram of the structure of the Zhundong coal once-through boiler drainage system provided by the embodiment of the present invention, such as figure 1 As shown, the Zhundong coal once-through boiler drainage system includes: economizer 1, water wall 2, start separator 3, water storage tank 4, start expansion vessel 5, start drain tank 6 and exhaust...

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Abstract

The invention provides an eastern Junggar coal concurrent boiler drainage system. Drainage pipelines are additionally arranged, when the content of iron ions of demineralized water in a first drainage pipeline is smaller than a preset first threshold value, the added drainage pipelines can be opened, demineralized water in a startup drainage tank can be discharged at the same time through the drainage pipelines, and therefore the washing time of an eastern Junggar coal concurrent boiler is shortened, the replacement speed of iron ions is increased, and the consumption of demineralized water raw water is reduced. In addition, the added drainage pipelines can be connected with a recovery device, and therefore demineralized water can be recycled, and energy conservation and consumption reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of boiler production in power plants, in particular to a Zhundong coal once-through boiler drainage system. Background technique [0002] Since the once-through boiler does not have a blowdown system, in order to prevent scaling on the heating surface, the boiler feed water must require high-quality desalinated water, and desalinated water must be introduced into the boiler during the water supply stage and startup stage of the boiler. Regular flushing is used to remove salts and impurities from pipes and heating surfaces. During cold flushing or hot flushing of once-through boilers, demineralized water passes through the water wall from the economizer to the start-up separator, and finally to the water storage tank. When the water quality of the desalted water is unqualified, the desalted water enters the drain tank after starting the expansion vessel to reduce the pressure, and then directly discharges to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/50F22B35/00
Inventor 李鹏曾琦张峰何武强
Owner XINTE ENERGY
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