Use of Zeolites as 'Concentrator' and 'Peak Shaver'

Industrial processes are often not evenly distributed over a working day or week. As a result, we observe that emission vapors are also not released as a constant concentration, but often show peaks and troughs.

Smoothing Peaks: 'Peak Shaving'

To process organic hydrocarbon vapors as effectively as possible, the key is not to size any purification for the maximum peaks. In that case, zeolites can be used as a kind of 'peak shaver'. Like activated carbon or an aliphatic scrubbing liquid, zeolites can adsorb and desorb vapors very well. Zeolites have the advantage of being inherently explosion/fire safe.

Concentrating

At HMVT, we also regularly use zeolites to concentrate low-concentration organic vapor streams for more efficient treatment. In this process, the vapor streams are reduced in flow rate, resulting in a higher concentration. We do this, for example, to subsequently oxidize the vapors autothermally with a catalytic oxidation unit.

Mobile Zeolite Test Unit

Zeolites come in various forms. Since each location has its own 'vapor profile', it is advisable in certain cases to choose the right zeolite. HMVT has a Mobile Zeolite Test Unit with which we can perform on-site ad- and desorption tests with three different types of zeolites. We also have FID sampling/measurement equipment to semi-continuously record the results of the pilot test. The results can be used to size the Peak Shaver and/or Concentrator wheel.