The incineration plant on Lynetten asked FORCE Technology to assess conditions in their secondary combustion chamber for documentation purposes. This was necessary in order to conform to a new EU directive on waste incineration. One result of this was that an afterburner had to be installed.

FORCE Technology suggested combining measurement with numerical flow calculations. With the help of our knowledge of waste incineration and the use of advanced flow modelling tools combined with in- process measurements, the plant was able to gain a deeper knowledge of and unique insight into the incineration process.

Advantages for the customer

The two methods applied would not have been so effective had they been used on their own. Combining in-process measurements and numerical modelling brought the following benefits to the customer:

• Effective pre-engineering studies and assistance in
  choosing the most suitable afterburner supplier
  and its most suitable configuration
• Accurate identification and elimination of a secondary flow
  problem in the secondary combustion chamber
• Fast assessment and analysis of the necessary modification of boilers to enable a longer retention time.

Saved expensive investment

The combination of on-line measurement, knowledge of waste incineration and CFD provided a much better total solution, enabling the customer to avoid having to make expensive investments. It proved that an expensive extension of the boiler room was avoidable.

Moreover, the customer now knows much more about the process. The resulting model of the process now belongs to the customer who will be able to use it in future studies.

FORCE Technology used the following expertise to meet the challenge:

• Measurement of waste fumes
• Process modelling and numerical flow calculations
• Knowledge of incineration and waste
• Advising on environmental regulations.