Efficient Air Pollution Control for the Glass & Mineral Wool Industry 

The melting furnace is the core of every glasswork. Operating at extremely high exhaust gas temperatures with heavy pollutant loads, it represents a major engineering challenge. Envanio provides customized solutions for continuous furnace operation, supporting both new plant builds and retrofits projects carried out during ongoing production. Our catalytic ceramic cartridge filter (CCF) systems combine particulate removal, DeSOx, and DeNOx into a single compact footprint, cutting capital costs and pressure drop. The resulting clean exhaust gas retains high thermal energy at elevated temperatures, creating ideal conditions for downstream heat exchanger systems and is suited for power generation from waste heat (Organic Rankine Cycle). 

Online flat glass coating with dimethyltin dichloride produces highly concentrated organotin compounds (VOCs) and corrosive acid (HCl) vapors. Envanio supplies a fully integrated, multi-stage abatement system. A direct-fired thermal oxidizer destroys organic compounds at temperatures exceeding 1,472 °F, designed specifically to resist tin oxide deposits. A downstream heat recovery boiler captures waste energy and cools the gas to optimal process temperatures. Finally, hydrochloric acid vapors are chemically neutralized and separated via a custom-designed dry sorption system baghouse, protecting downstream plant components from corrosion and ensuring full regulatory compliance. 

Applying protective backings during mirror manufacturing generates exhaust streams containing volatile organic compounds (VOCs). If solvent concentrations are low, a zeolite adsorption wheel concentrates the stream using a minimal hot air desorb flow. By drastically reducing the volume of air requiring treatment, the downstream thermal oxidizer operates with exceptional energy efficiently and minimal fuel consumption. VOCs are destroyed in a Regenerative Thermal Oxidizer (RTO) system at temperatures exceeding 1,472 °F. Electrically heated RTO systems are also available to further reduce your facility’s carbon footprint. 

Manufacturing mineral wool releases concentrated inorganic pollutants from the melt, alongside organic compounds and ammonia (NH₃) during binder curing and recycled material processing. Envanio delivers complete, coordinated systems for this process. Catalytic ceramic filter systems combine dust removal, DeSOx, and DeNOx into one compact unit to save space, lower pressure drop and drastically reduce capital costs. Volatile organic compounds (VOCs), ammonia (NH₃), and formaldehyde are then destroyed in a Regenerative Thermal Oxidizer (RTO) system operating at temperatures exceeding 1,472 °F, with fully electric heating available to zero direct combustion emissions. 

Our systems are designed to handle a wide range of industrial emissions, from volatile organic compounds (VOCs) and solvent vapors to strong odors and complex mixtures of organic pollutants. When selecting the appropriate system design, we tailor our approach directly to the requirements of your chemical processes.

Exhaust air treatment failure can lead to unplanned production shutdowns, compliance risks, and significant costs. That is why Envanio places special emphasis on robust system design, heavy-duty manufacturing quality, and comprehensive service throughout the entire equipment lifecycle.

By tailoring exhaust treatment to each specific process and using energy-efficient system designs, Envanio helps optimize your energy consumption operating costs. Integrating heat recovery – or, where applicable, acid recovery – and recirculating these resources back into production significantly increases overall cost-effectiveness.

Yes. Envanio helps companies reduce their carbon footprint through energy-efficient plant designs and electrically heated RTO systems as an alternative to conventional fossil fuels.

Envanio has more than 60 years of experience in environmental technology, with thousands of systems installed worldwide. This proven experience is built directly into our reliable, field-tested solutions for demanding industrial applications.

Yes. Envanio offers comprehensive services throughout the entire lifecycle of the system, including troubleshooting, inspection, preventative maintenance, and genuine replacement parts. In addition, we provide targeted retrofits to optimize your systems technically and thermally, facilitate compliance with evolving environmental regulations, and extend service life.