Flat-tube heat exchanger
Flat-tube heat exchangers are – if necessary – installed upstream of flat-bag filters in order to reduce the temperature of the gases to be cleaned to a temperature admissible for the filter fabric or to adjust the optimum process temperature. During development of this heat exchanger special importance was attached to the objective to achieve a reliable continuous operation, combined with a constant cooling of gases, even in case of high particle loads in the gas and in case of a strongly adhesive character of these particles. Occasional manual cleaning proved to be unnecessary for maintaining the heat transfer.
If necessary we are taking additional measures to ensure a trouble-free continuous operation of the flat-tube heat exchanger and exceptionally long service lives of cooling tubes.
- Utilisation of a mechanically working cooling area cleaning device in case of presence of particles with adhesive features.
- Avoidance of temperatures below the dew point by using pre-heated cooling air (cooling air re-circulation)
- Avoidance of temperatures below the acid dew point by means of injection of additive powders in the flue gas flow upstream heat exchanger
On request there are different possibilities of heat recovery available, e.g. in form of hot water generation.