A WELL-DESIGNED HEAT EXCHANGER WITH HIGH THERMAL EFFICIENCY PROVIDES HIGHLY EFFICIENT ODOUR REDUCTION AT WASTE TREATMENT PLANT AT MINIMUM ENERGY COST:

At waste treatment plants often unpleasant odours are produced which can cause complaints from surrounding areas. Especially when these are densely populated residential areas. For this reason the waste treatment plant at DSM in DeIft received many complaints from neighbouring residential areas. The problem was finally solved when the new incineration plant, where fumes are burnt at high temperature, was taken into service.

Case history:
Carbon and bio filters are familiar equipment to treat odorising vapours. The waste treatment at DSM Gist in Delft had both alternatives installed because of the irregular and sometimes very large vapour amounts these conventional systems were often ineffective.

Different approach:
Geurts International a leading design company for high efficient and high temperature heat exchanger technology, proposed together with a partner to burn the vapours in an incinerator (oxidization). Odorising components in vapours usually are organic compounds. These compounds can be broken down into harmless compounds, mainly water and C02 by burning them at temperatures between 650 ° and 900 °C. Usually such a incinerating system reduces organic components very efficiently, however operation is costly because of the high natural gas consumption in these systems.

Clever heat exchanger design
Geurts International, has often proven its design capabilities for high temperature heat exchangers with a high thermal efficiency. In this particular case the whole incineration plant has a thermal efficiency over 86% because of a well designed heat exchanger, with a high thermal efficiency providing the solution and cost effectiveness. This resulted when the incineration plant was taken in service in an odour reduction of practically 99% above 825 °C