Mineral Wool Industry

An industry with sulfur oxide emissions to clean up

Stone wool, or mineral wool, is an insulation material for buildings obtained by melting, extruding and spinning molten volcanic rock. It is one of the highest performing insulation materials on the market, and as such greatly contributes to saving energy and reducing heating costs.

Additives that add sulfur

The manufacturing process of stone wool employs additives that contain sulphur, therefore generating sulfur oxide (SOx) emissions. All manufacturing plants are equipped with a filter before an oxidizer that burns the hydrogen sulfide (H2S) produced by the melting process and transforms it into SOx. In turn, these sulfur oxide emissions must be mitigated in order to comply with the legislation.

Legislation subject to change in the EU

In the European Union, the legislation regarding the stone wool industry is included in the Glass BREF document, which is set to be revised in 2020 or 2021.

What our solution can do for the stone wool industry

The SOLVAir® solution consists in injecting sodium bicarbonate as a dry sorbent into the facility’s flue gases, upstream of a bag filter. Operators can thus easily obtain significant mitigation of acid gas emissions, while avoiding hefty investments and keeping their operating costs low.

An adaptable and versatile flue gas treatment solution

We offer the only solution on the market that allows industrial facilities to comply with emissions limits even when the reagent is injected before the complete formation of the pollutants in the exhaust gases. Because of this, our flue gas treatment system offers unparalleled adaptability and versatility, for example in the event of a fuel switch or variations in the raw material content.

Key benefits for our customers

Treating SOx with a sodium bicarbonate solution allows compliance with the most stringent emission limit value (ELV), while at the same time minimizes the residual production.

Easy logistics and operations

Our solution doesn’t generate any effluents needing to be treated, and its handling and storage is made easy by the fact it is a non-hazardous material. All this reduces logistics and operational costs.