2014 Volume 68 Issue 7 Pages 757-764
Energy saving and power saving are critical issues to be addressed among all factory. Conventionally, there is the demand to recover the energy from low temperature waste heat gas.
However, the waste heat gas recovering from the low temperature had been considered to be very difficult by acid dew point corrosion, scale adhesion of the heat transfer tube , and so on. Junkosha’s Heat Exchanger resolves above problem by improvements of Junflon® PFA heat transfer tube and the structure of heat exchanger.
Four points are necessary to recover the waste heat from low temperature gas.
(1) Corrosion resistance for the acid dew point
(2) Reduction of the gas pressure loss
(3) Reduction of the maintenance man-hour
(4) Space saving and lightweighting
Junkosha’s products have been installed in a Sheet Glass Company and used in maintenance-free for 14 years. Thus it has been already proved that four points of characteristics are superior.
In addition, we recently carried out a verification test with two papermaker’s boiler (multi-fuel fired boiler : 180t⁄h, black liquor recovery boiler : 170t⁄h)
AS a results, no corrosion, scale adhesion, abrasion and deterioration of the heat transfer tube, were observed.
Junkosha’s fluoropolymer heat exchanger, ⌈FLUORO-X® GRID SERIES⌋ , provides excellent corrosion resistance and the non-adhesiveness from low temperature gas. In addition, the overall heat transfer coefficient is very high (40∼50kcal⁄m2•°C•hr) In conclusion, FLUORO-X® GRID SERIES has the most advantages than the product made of other materials.
