Abstract
At present, the exhaust gas temperature of coal-fired power plants is 125-150℃, and the emission of high-temperature flue gas causes the loss of excess heat and wastes. For this kind of phenomenon, the waste heat recovery system is researched and designed, combined with the combination of a low-temperature economizer in a coal-fired power plant in Dezhou. The heater, through the low-temperature economizer combined with the heater system, reduces coal consumption for power generation, reduces flue gas emissions, while reducing dust specific resistance, improving dust removal efficiency of electric dust removal, and reducing dust emissions. This project responds to national policy guidelines.
Highlights
With the development of the global economy, energy and environmental protection situation, the current coal-fired power plants, especially the less economical coal-fired power plants, will face stricter environmental protection requirements and severe market operation situations.Energy conservation and emission reduction have become coal-fired two binding indicators for the development of power generation enterprises, the power dispatch of coal-fired power generation enterprises has been gradually adjusted from nameplate dispatch to energy-saving dispatch
Pollution of exhaust flue gas; Sun Fangtian et al[8] Proposed a gas boiler flue gas waste heat recovery technical solution based on absorption heat exchange, and compared and analyzed different gas boiler heating systems from the perspective of thermodynamics, and the results showed that the technical solution It can increase the transportation capacity of the primary heating network by about 47%, and the system has good economic and energy-saving benefits
This article mainly focuses on the problem of excessively high exhaust gas temperature of coal-fired power plants causing part of the heat to be lost
Summary
With the development of the global economy, energy and environmental protection situation, the current coal-fired power plants, especially the less economical coal-fired power plants, will face stricter environmental protection requirements and severe market operation situations. Energy conservation and emission reduction have become coal-fired two binding indicators for the development of power generation enterprises, the power dispatch of coal-fired power generation enterprises has been gradually adjusted from nameplate dispatch to energy-saving dispatch. Most of the existing environmental protection equipment in domestic thermal power plants can no longer meet the requirements of the new emission standards and are facing a new round of environmental protection technological transformation. Domestic flue gas waste heat recovery technology is mainly divided into four methods: condensing boiler, heat exchanger to recover flue gas waste heat, heat pump technology, and heat pipe technology. In the early flue gas waste heat recovery system, only air preheaters and economizers were installed, but the waste heat of the recovered flue gas is limited
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