Abstract
A study on the performance of formulated PrekotAC filter aids on pressure drop across two different types of filter media, i.e polytetrafluoroethylene (PTFE) and polyimide (P84) was carried out in a laboratory scale fabric filtration system. Filter aids is applied in order to prolong the lifespan of the fabric filter by reducing the pressure drop across a filter cake. PrekotAC which is a combination of 90%wt activated carbon and 10%wt PreKotTM was tested under various material loadings of 0.2, 0.4, and 0.6 mg/mm2 at a constant filtration velocity of 5 m/min across its cake and filter media. The results showed that PrekotAC presents a lower pressure drop across the P84 compared to PTFE filter media under various material loadings. This is because of its different characteristics that effect the porosity of the filter media and allow a higher volumetric airflow passing through, resulting in lower pressure drop compared to PTFE filter media. In addition, the diversity in terms of particle size distribution of the formulated PrekotAC that increase its permeability property helps to reduce the pressure drop across the media and its filter cake. Thus, PrekotAC has a promising characteristic as a two in one filter aids, a pre-coating and adsorbent material for fabric filtration system.
Highlights
Filter aids is applied in fabric filtration system to reduce and prolong the lifespan of the fabric filter by reducing pressure drop across filter cake during filtration system
As in figure 2, it was found that pressure drop across the filtration process increases with different amount of material loading of filter aids for both filter media where higher material loading leads to a thicker filter cake that reduces the volumetric air flow that passing through, resulting in higher pressure drop across the filter cake [12,13,14]
This finding suggests that pressure drop across the filtration process depends on the characteristics of the filter media and filter aids [15]
Summary
Filter aids is applied in fabric filtration system to reduce and prolong the lifespan of the fabric filter by reducing pressure drop across filter cake during filtration system. By using an appropriate filter media with a good filter aids material, helps to form a porous cake with low pressure drop across a filter cake. In this study the performance of PrekotAC in terms of its pressure drop on two different filter media (PTFE and P84), under various material loadings of 0.2, 0.4 and 0.6 mg/mm as well as a constant filtration velocity of 5 m/min was investigated. PrekotAC is a combination of two different types of material that will work as a two in one filter aids material (as an adsorbent and a pre-coating material) in fabric filtration system By applying this material in the system, the all in one spray system can be introduced since these materials can work as a two in one filter aids material
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