Heat exchange adjusting system of coal economizer

An economizer and heat regulation technology, applied in preheating, feed water heaters, fluid heaters, etc., can solve the problem that the economizer cannot adjust the heat exchange effect

Pending Publication Date: 2018-09-28
JIANGSU TAIHU BOILER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the conventional economizer cannot adjust the heat exchange effect, the present invention provides an economizer heat exchange adjustment system, which can meet the demand for flue gas temperature at the outlet of the economizer when the boiler is in a low-load condition

Method used

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  • Heat exchange adjusting system of coal economizer
  • Heat exchange adjusting system of coal economizer

Examples

Experimental program
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Embodiment Construction

[0016] Such as figure 1 , figure 2 In the economizer heat exchange adjustment system shown, the fluid that is fed in is water, and the water is pressurized into the system through a pump, which includes an economizer 1, and the economizer is equipped with an inlet header 1-1, an outlet header Box 1-2, furnace wall 1-3, serpentine pipe 1-4 installed in furnace wall 1-3 and connected with inlet header 1-1 and outlet header 1-2, which also includes heat exchanger 2 , the heat exchanger 2 is specifically a tube-and-tube heat exchanger, which includes a front end head 2-1, a rear end head 2-2, and a middle shell 2-3, and the two heads and the shell 2-3 pass through The tube plate 2-4 is separated, the heat exchange tube 2-5 is welded on the tube plate 2-4, the hot water outlet 3 and the hot water inlet 4 are respectively arranged on the front end head 2-1 and the back end head 2-2, The cold water inlet 5 and the cold water outlet 6 are respectively arranged on the housing 2-3, a...

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Abstract

The invention provides a heat exchange adjusting system of a coal economizer according to the problem that the heat exchange effect of a conventional coal economizer cannot be adjusted. According to the heat exchange adjusting system, under the condition that a boiler is in low loads, the flue gas temperature of a coal economizer outlet can still meet the requirement. According to the technical scheme, the heat exchange adjusting system of the coal economizer comprises the coal economizer, and an inlet header and an outlet header are arranged on the coal economizer; the heat exchange adjustingsystem further comprises a heat exchanger; the heat exchanger is provided with a cold fluid inlet, a cold fluid outlet, a hot fluid inlet and a hot fluid outlet; the cold fluid outlet is connected with the inlet header; the outlet header is connected with a heating pipeline and a discharging pipeline; and the heating pipeline is connected with the hot fluid inlet.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, in particular to an economizer heat exchange regulating system. Background technique [0002] The economizer is used to absorb the heat of high-temperature flue gas, which can reduce the exhaust temperature of flue gas and save energy. Conventional economizer water enters from the inlet header and exits from the outlet header. By exchanging heat between the flue gas and water, the temperature of the flue gas is reduced. [0003] Once the conventional economizer is finalized, it cannot actively adjust the heat exchange effect of the economizer, but the exhausted flue gas needs a certain temperature, for example: the flue gas temperature range of 320-350°C for the denitrification device outside the furnace is required, if the boiler is under low load conditions Under normal circumstances, the temperature of the flue gas entering the economizer is relatively low, and then through the econo...

Claims

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Application Information

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IPC IPC(8): F22D1/12F23J15/06F24H9/00
CPCF22D1/12F23J15/06F24H9/0005Y02E20/30
Inventor 王忠管亿田忠权王新罗晖
Owner JIANGSU TAIHU BOILER
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