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Hot flushing method of boiler system and boiler system

A hot state flushing and boiler technology, applied in the direction of boiler cleaning equipment, etc., can solve the problems of high energy consumption, auxiliary equipment, power consumption, and fuel consumption, and achieve the effects of reducing energy consumption, reducing a large amount of water consumption, and improving efficiency

Active Publication Date: 2020-04-03
XINTE ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calculated at 10 yuan per square meter of desalted water, it will cost 40,000 yuan, and the power consumption and fuel consumption of various auxiliary machines are extremely high

Method used

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  • Hot flushing method of boiler system and boiler system

Examples

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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, this embodiment provides a boiler system, including a boiler, the boiler includes a boiler water wall 1, and the boiler system also includes a bypass pipe and an inlet valve group arranged on the bypass pipe for controlling water inlet. The inlet of the bypass pipe is connected to the adjacent boiler, and the outlet of the bypass pipe is connected to the boiler water wall 1. The bypass pipe is used to introduce the water vapor obtained by heating the adjacent boiler into the boiler water wall 1 of the boiler to be started for hot flushing . The water vapor used in hot flushing is obtained by heating desalinated water, which is ordinary water to remove salts contained in water, such as sodium salts, calcium salts, etc., to obtain relatively pure water.

[0025] In order to ensure the safety of generator set operation, general power plants are configured with two or more generator sets, and each generator set includes at least one boiler. When...

Embodiment 2

[0049] This embodiment provides a hot flushing method using the boiler system in Embodiment 1, in which steam heated by an adjacent boiler is introduced into the boiler water wall of the boiler to be started for hot flushing.

[0050] In this embodiment, the temperature of the steam for hot flushing is 200° C., the pressure of the steam for hot flushing is 26 MPa, and the amount of water added to the steam for hot flushing is 300 tons / hour.

Embodiment 3

[0052] This embodiment provides a hot flushing method using the boiler system in Embodiment 1, in which steam heated by an adjacent boiler is introduced into the boiler water wall of the boiler to be started for hot flushing. In this embodiment, the temperature of the steam for hot flushing is 210° C., the pressure of the steam for hot flushing is 20 MPa, and the amount of water added to the steam for hot flushing is 200 tons / hour.

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Abstract

The invention discloses a hot-state flushing system for a boiler system and the boiler system. The boiler system comprises a boiler, wherein the boiler comprises a boiler water-cooling wall; and watervapor obtained by heating through an adjacent boiler is introduced into a boiler water-cooling wall of a to-be-started boiler to subject to hot-state flushing. According to the hot-state flushing system for the boiler system and the boiler system disclosed by the invention, water vapor obtained by heating through the adjacent boiler is introduced into the boiler water-cooling water of the to-be-started boiler to subject to hot-state flushing, so that steps of igniting the boiler and starting various auxiliary machines in the prior art are avoided, and a step of continuously feeding water to the boiler through a water feeding pump of the boiler is avoided. The method and the boiler system disclosed by the invention improve hot-state flushing efficiency, reduce great water consumption in aboiler starting process, reduce electric consumption and oil consumption of various auxiliary machines, reduce starting time, reduce production cost, and reduce energy consumption of the boiler. The boiler system disclosed by the invention is simple, and is convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of boiler production in power plants, and in particular relates to a hot flushing method for a boiler system and the boiler system. Background technique [0002] Boilers burning Zhundong coal have strong coking and corrosion, which can easily cause excessive temperature and corrosion on the heating surface of the boiler. A typical feature of the once-through boiler is that the heating surface is prone to oxide scales, causing the boiler to burst. Since the once-through boiler has no sewage system, in order to prevent scaling and corrosion on the heating surface, the feed water of the boiler must be desalted water with very high quality requirements. During the water supply and start-up phase of the boiler, the salt and impurities existing in the boiler pipes and heating surfaces should be removed by cold flushing and hot flushing. [0003] The boiler includes an economizer, a boiler water wall, a steam-wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22B37/52
CPCF22B37/52
Inventor 曾琦李鹏何武强刘贤云
Owner XINTE ENERGY
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