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System to treat the gas current (volatile solvents mainly) producing energy and reusing it.

Development of a combustor with heat recovery: a plant for the recovery of the energy coming from the methanol burning. This methanol comes from the prepreg manufacture process. Up to now these emissions were sent to the atmosphere. As soon as the plant was set up at TEVESA facilities, these emissions will be treated and the energy reused.

The advantages of applying this system are several, on the one hand, the emissions are avoided, improving the work environment and workers health, on the other there is an economic improvement because, these emissions lost up to know, will be treated getting energy from them.

The choice of an oxidiser with heat recovery has been driven by the following factors:
1. Economic convenience in the valorisation of the calorific value (heat input) of the pollutant (methyl alcohol), if we would use a standard boiler to produce the same energy the fuel consumption would be 34 Nm3/h
2.Possibility to have a single chimney that discharge to atmosphere, therefore a smaller quantity of pollutants (NOx and CO) if compared to a different system with a solvent treatment + a thermal oil boiler.
3.Lower capital cost
4. Easy operation by non specialised personnel
5. Performance are constant in time

The innovations are:
1. Compliance with PED that is the new code for the pressure equipments, in our case the heat recovery unit.
2. Compliance with the spirit of the Kyoto agreement, in particular the plant will be fitted with inverters so to reduce the electric consumption during the phases of low load
3. Ecological materials, we will use a new type of ceramic fibre lining that is not dangerous (cancer risk) follows the principle of the future directive on pollutants so that while treating the effluent we don�t produce another polluted stream (like it would have been with condensation or solvent recovery), we simply discharge clean exhaust to chimney

Reported by

BABCOCK WANSON ITALIANA
Via Roma 147
20040 CAYENAGO BRIANZA – MILANO
Italy
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