Taehwa Engineering Co., Ltd.

TEC has acquired many years experince in the construction of heat exchanger
  for flue gases.
  TEC heat exchangers have been in succesful as air preheaters and economizers
  or for heat extraction.Steam to gas preheaters and static gas preheaters and
  heat displacement systems made by TEC give excellent results in reheating
  applications behind scrubbers and waste incineration plant.The experince acquired
  by TEC guarantees the depanability of its products.

Clean gas discharged from wet absorbers (scrubbers) are water vapor
  saturated and still contain droplets and residual paticulate matter. These gases
  must be dried by reheating before admission into subsquent components or into
  the discharge stack. For this purpose, TEC supplies static heat exchangers
  as a proven and economical solution.

If the SCR facility mounted behind the scrubber, the raw gases must
  be reheated tem- perature of approx.300 TEC heat exchangers with high
  thermal efficiency dispense in large measure with the need to use external energy
  sources. The mian heating is effected via the multi-stage steel tube or counter
  flow plain plate type heat exchanger. To prevent corrosion in the cold inlet
  zone, the raw gases must be preheated by means of an acid resistant heat exchanger.

The energy content of the flue gas can be used at various points in
  the flue gas line for energy saving purposes or to increase plant efficiency.
  For this purpose, the heat exchanger must satisfy the necessary requirements
  in respect of temperature, corron resistance and cleaning capacity on the raw
  gas side.