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Power station boiler waste heat utilization system based on fume temperature communication control valve

A utility boiler and valve technology, which is applied in the field of utility boiler waste heat utilization system based on flue temperature communication control valve, can solve the problems of affecting the efficiency of heat exchange, lack of intelligent control, and decrease in heat exchange capacity, so as to promote smooth flow, The effect of avoiding uneven segmentation and suppressing reflow

Active Publication Date: 2020-02-04
QINGDAO UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

During the evaporation process of the heat pipe, it will inevitably carry liquid to the steam end. At the same time, because of the exothermic condensation of the condensation end, there will be liquid in the condensation end, and the liquid will inevitably mix with the steam, so that the fluid in the heat pipe is vapor. Liquid mixture, the existence of vapor-liquid mixture causes the gas to mix together, and the heat exchange capacity between the liquid and the liquid decreases, which greatly affects the heat exchange efficiency
[0005] In the boiler waste heat utilization system of the prior art, there is a lack of research on intelligent control, especially the intelligent control when there are multiple waste heat utilization equipment at the same time, such as setting heat distribution, etc.

Method used

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  • Power station boiler waste heat utilization system based on fume temperature communication control valve
  • Power station boiler waste heat utilization system based on fume temperature communication control valve
  • Power station boiler waste heat utilization system based on fume temperature communication control valve

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Embodiment Construction

[0045] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0047] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] A utility boiler flue gas waste heat utilization system, the waste heat utilization system includes an air preheater 1, the air preheater 1 includes a heat pipe 10, a flue gas channel 14 and an air channel 16, and the heat pipe 10 includes an evaporation The condensing end 101 and the condensing end 102, the condensing end 102 is arranged in the air passage 12, and the evaporating end 101 is arranged in the flue. The evaporating end 101 absorbs the waste heat of the flue gas in the boiler flue, and transfers the heat to the air in the air channel 12 t...

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Abstract

The invention provides a power station boiler waste heat utilization system based on fume temperature communication control valve. The system comprises an air preheater and a heat storage device, a fourth temperature sensor is arranged in the flue upstream of an upstream valve, the fourth temperature sensor is used for detecting flue gas temperature in the flue, the fourth temperature sensor is indata connection with a central controller, and the central controller controls opening and closing of the upstream valve and a downstream valve based on the data detected by the fourth temperature sensor. Through the operation, when the flue gas temperature meets the requirement, excess heat can be stored in the heat storage device under the condition that the pre-heat generated by the air preheater meets the amount of air, in the absence of flue gas waste heat, the heat stored by the flue gas waste heat is utilized to heat the air preheater so as to meet the actual working requirements of the air preheater, therefore, the flue gas waste heat can be fully utilized, and the situation of excessive heat waste is avoided.

Description

technical field [0001] The present invention is a part of the subject project jointly developed with the enterprise, and is an improvement on the previous application. It relates to the field of waste heat recovery of heat pipes, and in particular relates to a control method and device for recovering waste heat of flue gas by using heat pipes. Background technique [0002] With the rapid development of my country's economy, energy consumption is increasing day by day, and the problem of deteriorating urban air quality is becoming more and more prominent. It is urgent to save energy and reduce the emission of harmful environmental substances. In the common steam generation process, one of the main reasons for high energy consumption and serious pollution is that the exhaust temperature of boiler flue gas is too high, which wastes a lot of energy. Therefore, the waste heat of boiler exhaust gas is recovered and reused to achieve energy saving and emission reduction. purpose, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L15/04
CPCF23L15/045F23L2900/15043Y02E20/34
Inventor 王逸隆马军江程李言伟连根款
Owner QINGDAO UNIV OF SCI & TECH
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