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Low-temperature coal economizer and WGGH (including control system) HomepageMain business – Products

Low-temperature coal economizer and WGGH (including control system)
In 2004, SPERI carried out intensive research and tests on low-temperature coal economizers for 2X1000MW unit of the Shanghai Waigaoqiao No. 3 Power Plant on the basis of investigating and summarizing the operation of domestic and oversea boilers.
Products Description

    In 2004, SPERI carried out intensive research and tests on low-temperature coal economizers for 2X1000MW unit of the Shanghai Waigaoqiao No. 3 Power Plant on the basis of investigating and summarizing the operation of domestic and oversea boilers. With the technical research, design and development, production and manufacture in almost 5 years, the first set of low-temperature coal economizer in China (the first set of low-temperature coal economizer made of metal pipes in the world) was successfully put into operation on the unit of the Shanghai Waigaoqiao No. 3 Power Plant in May, 2009. At present, the unit of the Shanghai Waigaoqiao No. 3 Power Plant as the first set of unit equipped with low-temperature coal economizer in China has become a demonstration project.
 
    Based on the experience in engineering practice of low-temperature coal economizer, SPERI researches and develops the WGGH flue gas waste heat recovery - reheating system which utilizes the recovered waste heat of flue gas to heat up the flue gas to the 80℃  before it flows into chimney. It effectively improves gypsum rain phenomena near the chimney of power plant and eliminates visual pollutions. At present, this system has been successfully used in the projects including the Zheneng Liuheng Power Plant, the Jiangyin Sulong Thermal Power, the Huaneng Shangan Power Plant, the Foshan Nanhai Jingneng Thermal Power, the Zheneng Wenzhou Telulai Power Plant , etc. All the systems which have been put into operation reach or exceed designed values and no corrosion problem exists. 
 
            
 
 
       

Product features:

      
    Automatic control of metal pipe wall temperature of heat exchanger at different loads;

    Depending on the flue gas of different coal types, the setting value of metal pipe wall temperature of heat transfer pipe preventing low-temperature corrosion is automatically calculated and the operation of whole system is safe and reliable; 
    Master the measurement technology for dew point temperature of flue gas and develop portable measuring instrument for acid dew point temperature of flue gas;

    Modular production and onsite building block lifting and welding; single piece of heat transfer pipe can be pulled out; installation and maintenance are easy;

    Properly determine the layout position of equipment and the reconstruction and reinforcement scheme for flue, perform numerical simulation on flue gas flow field and put forward reasonable deflector plate layout schemes; this is the key to solve wear;

    Depending on different conditions of different owners, the system with the most optimal technology and the highest compliance with requirements can be designed.


Contact Information

TEL:021-64358710    FAX:021-64358722


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