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A Boiler Waste Heat Heating Method Against Low Temperature Corrosion

A boiler waste heat and low temperature prevention technology, which is applied in the field of steam boilers and steam boiler waste heat utilization, can solve the problems of flue gas waste heat waste and poor waste heat utilization effect, and achieve the effects of saving energy, avoiding low-temperature corrosion, and optimizing size and structure

Active Publication Date: 2018-04-10
TAIYUAN BOILER GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, low-temperature corrosion may occur while satisfying the residual heat of the flue gas, so how to avoid low-temperature corrosion is an important issue. At the same time, if only to avoid low-temperature corrosion, the waste heat in the flue gas is wasted Too much, leading to the problem of poor utilization of waste heat, so the above-mentioned related problems need to be solved urgently

Method used

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  • A Boiler Waste Heat Heating Method Against Low Temperature Corrosion
  • A Boiler Waste Heat Heating Method Against Low Temperature Corrosion
  • A Boiler Waste Heat Heating Method Against Low Temperature Corrosion

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Embodiment Construction

[0037] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] figure 1 A power plant boiler waste heat utilization system is shown. The system includes a boiler 1, a main flue 12, a bypass flue 16 and a heat exchanger 6. A part of the flue gas produced by the boiler 1 is directly discharged through the main flue, and a part It enters the heat exchanger 6 through the bypass flue inlet 13 and the heat-exchanged flue gas flows into the main flue 12 through the bypass flue outlet 14 and is then discharged.

[0039] As a preference, the boiler waste heat utilization system automatically adjusts the exhaust gas temperature to avoid low-temperature corrosion. The main implementation examples are as follows:

[0040] A main flue regulating valve 2 is provided between the bypass flue inlet 13 and the bypass flue outlet 14 of the main flue 12 to adjust the flue gas volume of the main flue 12, and at the same ti...

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Abstract

The invention provides a low-temperature corrosion resistant heating method adopting boiler residual heat. The method comprises the following steps: step I, firstly, measuring the exhaust gas temperature, and automatically adjusting the opening of a valve or the frequency of a draught fan according to the exhaust gas temperature; step II, measuring the inlet temperature of a radiator, and determining whether auxiliary heating equipment needs starting or not according to the measured temperature. According to the low-temperature corrosion resistant heating method, the inlet temperature of the radiator is automatically measured through a temperature sensor positioned at the inlet of the heating radiator, so as to meet the heat dissipation demand; the exhaust gas temperature is automatically controlled through controlling flow of exhaust gas participating in residual heat utilization and heat exchange, so that low-temperature corrosion is avoided, and intelligentized adjustment of a system is realized.

Description

Technical field [0001] The invention belongs to the field of steam boilers, and particularly relates to the field of steam boiler waste heat utilization. Background technique [0002] With the rapid economic development of our country, energy consumption is increasing, and the problem of deteriorating urban air quality has become more and more prominent. The problems of saving energy and reducing the emission of environmental harmful substances are urgent. In the common steam generation process, one of the main reasons for high energy consumption and serious pollution is that the exhaust temperature of the boiler flue gas is too high, which wastes a lot of energy. Therefore, the waste heat of the boiler exhaust gas is recovered and reused to achieve energy saving and emission reduction. Purpose, while also protecting the environment. However, in the prior art, low-temperature corrosion may occur while satisfying the waste heat of the flue gas. Therefore, how to avoid low-tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D15/00F24D19/10F23J15/06
CPCY02E20/30
Inventor 刘汉涛仝志辉
Owner TAIYUAN BOILER GROUP
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