Dutch company kills two birds with one stone thanks to activated carbon

Aircon H - Desotec

Proactively anticipating an increase in production capacity: based on this ambition, a producer of carpet tiles from the Netherlands was looking for a solution to comply with the decrease of permitted TOC (total organic carbon) concentrations in air emissions. Thanks to the selected solution, the company also removes odourous emissions and therefore maintains its good relationship with the surrounding area.

A leading producer of carpet tiles recently commissioned a new production unit. During the first years, it was unnecessary to implement treatment for TOC concentrations in the emitted air, as they did not come close to the permitted limits. Since they plan to significantly increase production this year after the summer, the company had to find a solution to this challenge.

The decision regarding the right approach was easily made. The company had already collaborated with Desotec in the past to purify air streams at other sites, and was impressed with the surprising versatility and efficient effect of activated carbon. They therefore contacted us to also provide the right treatment at the new site.

Already during the first exploratory meeting, timing proved to be one of the most important challenges. Since capacity is already considerably increasing this summer, the company wanted a system that would be completely operational by the end of July. After analysing the sources, rates and TOC concentrations, it became apparent that the concentrated TOC would be higher than the emission standards at two sites. The largest flow that also includes a latex-based bonding agent has a rate of 4,000 m³/h and a TOC concentration of 64 mg/m³. In addition, a solution was further required for three smaller flows of 200 m³/h each and a TOC value of 72 mg/m³. In both situations, the TOC concentration must be reduced to a maximum of 20 mg/m³.

We opted for an AIRCON H filter as the solution that contains 6,500 kg of activated carbon and can purify airflows for a yearly period. The client wanted a horizontal filter that could be easily installed under a canopy close to the building.

An additional challenge was the temperature of the air streams. This is slightly more than 100°C, while the activated carbon filters can handle streams with a maximum temperature of 70°C. We anticipated this through an ingenious construction of the pipework and by suctioning ambient air to contribute to the temperature reduction.

Desotec is currently installing the pipework and a fan. The mobile activated carbon filter is scheduled for installation in a few months’ time. For safety reasons, we will also install a carbon monoxide sensor on the exhaust. The fact that the filter will also remove the low odour pollution, which is caused by the presence of styrene-related components in the air stream, is an additional benefit for this client.