China Silica Glass Flue Gas Air Preheater

GGH is a very important device in flue gas desulfuration system.It's main function is to use the original fule gas to heat the net flue gas after desulfuration, so the temperature of flue gas is lowered while the temperature of desulfurized net flue gas is lifted to reach the requested discharged temperature ( above 80ºC) to be discharged through chimney to the atmosphere.
Product features of GGH:
·Rise the exhaust temperature and uplifting height:
The reheating of flue gas rises the exhaust gas temperature after wet flue gas desulfuration from 50ºC~70ºC to 80ºC~100ºC, so as to enhance the uplifting height and difusion ability of flue gas discharged from chimney,eliminating the air pollution.
·Thoroughly slove the problems of dew point corrosion and low heat transfer efficiency of metallic tubes.
Silicon carbide is kind of single-phase, pressureless sintered silicon ceramics with high purity,fine grain and low porosity. It is suitable for extreme environments like high temperature, high pressure, strong corrosion and high abrasion. At the same time, silicon carbide has the advantage of super high thermal conductivity, which effectively solve the problem of low heat transfer efficiency of metallic or enamel tubes.
·Improve desulfuration efficiency.
Desulfuration efficiency increases with the decrease of flue gas temperature at the inlet of absorption tower, so the system usually uses GGH device to cool the original flue gas.
Glass flue gas preheater is a heat exchange equipment using undesulfurized flue gas to heat the desulfurized flue gas to meet the required environmental protection emission standard of flue gas.The sulfur content in desulfurized flue gas is higher and will cause corrosion to equipment during flue gas cooling process. The desulfurized flue gas still has certain corrosion. The glass tube can effectively solve the problem corrosion during gas - gas heat transfer, reducing equipment investment.
Advantages of Glass Tube GGH :
·The inner and outer surface of the glass tube is smooth and not easy to accumulate ash, which reduces the running resistance and has good corrosion resistance.

·Glass tube has light weight and high strength, easy for transportation and installation.
·The wall of glass pipe and flow passage are smooth, the running resistance is low, reducing the operating cost.

·High borosilicate glass is resistant to temperature shock at 400ºC.
·Silica glass is resistant to temperature shock at 1000ºC.
·The metal covering nets can prevent external shocks.
·The third generation is under development, with internal screw and flat tube technology.
Sound packaging with plywood case to protect the equipment during long-distance transportation.
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