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Continuous-blowdown drainage heat recovery system of boiler

A heat recovery and water-repelling technology, which is applied in steam boilers, steam boiler accessories, steam boiler components, etc., can solve the problems of waste of hydropower resources, affecting the safe operation of power plants, etc., and achieve the goal of reducing steam exhaust and slowing down scaling and plugging pipes Possibility, simple effect of the system

Inactive Publication Date: 2012-01-18
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the waste of hydropower resources in the prior art, and the problem that exhaust steam affects the safe operation of power plants; provide a boiler continuous drainage heat recovery system; the system has a simple structure and high efficiency, reduces waste of resources, and improves the safety of power plants operating capacity

Method used

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  • Continuous-blowdown drainage heat recovery system of boiler
  • Continuous-blowdown drainage heat recovery system of boiler
  • Continuous-blowdown drainage heat recovery system of boiler

Examples

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Boiler row drainage heat recovery system, such as figure 1 , figure 2 Shown in the figure, 1, continuous blowdown expander, 2, regular blowdown expander, 3, safety valve, 4, electric control valve, 5, gate valve 1, 6, drain heater, 7, bypass pipeline, 8, Gate valve III, 9, gate valve II, 10, cleaning port. The drain port at the bottom of the continuous sewage expansion vessel 1 is connected to the regular sewage expansion expansion 2 through a connecting pipeline, the connecting pipeline is provided with an electric regulating valve 4 and a gate valve I 5, the connecting pipeline is provided with a drain heater 6, and the drain heater 6 is provided with a water inlet With the drain, some heat exchange base pipes are established between the water inlet and the drain of the drain heater 6, and the drain heater is located on the cold air passage of the boiler. ...

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Abstract

The invention discloses a continuous-blowdown drainage heat recovery system of a boiler, which comprises a continuous blowdown flash tank and a periodic blowdown flash tank, wherein a drainage hole at the bottom of the continuous blowdown flash tank is connected with the periodic blowdown flash tank through a connecting pipeline, and the connecting pipeline is provided with an electronic adjusting valve. The continuous-blowdown drainage heat recovery system is characterized in that the connecting pipeline is provided with a drainage steam air heater, the drainage steam air heater is provided with a water inlet and a water outlet, a plurality of heat exchange base tubes are arranged between the water inlet and the water outlet, and the drainage steam air heater is arranged on a cold air channel of the boiler. The periodic-blowdown drainage heat recovery system has the advantages of simple structure, capabilities of realizing continuous-blowdown drainage cooling and drainage heat recovery, reducing periodic-blowdown exhaust air and saving cold water doping, and remarkable economic benefit.

Description

technical field [0001] The invention relates to a boiler continuous drainage heat recovery system for expansion vessels, in particular to a boiler continuous drainage heat recovery system in which a heater is installed in a cold air channel of the boiler. Background technique [0002] In the conventional system, when the continuous expansion vessel of the boiler is drained, the hot water under pressure is directly discharged into the fixed row. After fixed row expansion, the generated steam is directly discharged into the atmosphere. After expansion, the remaining hot water is mixed with cold water and then discharged. This system has the following drawbacks: [0003] 1) When the boiler is running, the steam discharged from the fixed exhaust pipe is directly discharged to the air, not only the heat cannot be recovered, but also the waste of water resources is caused. Especially in cold regions, the temperature is low in winter, and the steam discharged from the exhaust pi...

Claims

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Application Information

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IPC IPC(8): F22B37/02
Inventor 李洪超杨俊波吕玉红高永芬祁金胜蒋莉
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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