What needs to be filtered: fine mist with soluble salts diluted into water.
The customer is a well know chemical industry producing many different products.
In this case our candle filters have to be installed in a ATS production unit (Ammonium Thiosulphate).
The ATS is made from the mixture of liquid elemental Sulfur and Ammonia.
Moreover, the plant produces Sulfur Dioxide (SO2) and Ammonium Bisulfite (ABS) as well.
Our Fiberwind candle mist eliminators have been installed in an absorption column downstream the production plant in order to remove the reintrained mist from SO2 scrubber before stack.
This specific chemical environment required special filters: Brownian mist eliminators with SS316L outer screens & carbon mattress to avoid the corrosion of the filtering media in an alkali environment.
The customer confirmed the positive results after the installation of the set of AWS Fiberwind candles:
- Transparent plume out of the stack: before the installation they had white plume instead;
- Downstream issues solved, for example: no crystallization of the oxygen analyzer;
- The final emission tests also confirmed the performance promised during the offer stage.