Sustainable Waste Management and Optimization of Gas Purification

The waste that cannot be avoided, recovered or recycled can still be used to generate energy. The "fuel" is free, the CO2 emissions are partially climate neutral (biogenic waste) and the waste replaces valuable fossil fuels that would otherwise have to be used for energy production.


 In addition, during waste incineration, all materials are reduced in volume and mineralized and can no longer harm the environment (e.g., through methane emissions during uncontrolled decomposition in a landfill, or through leachates). The remaining residues from waste incineration can still be used for metal extraction and as building materials.
- However, the exhaust gases produced during incineration must be properly cleaned after they have been used to generate energy. In many plants, large quantities of additives are used for this purpose, such as activated carbon, which then in turn becomes waste.

- Gore provides an alternative with catalytic filters: similar to a car catalytic converter, toxic substances in the exhaust gas are rendered harmless and completely destroyed without the need for any auxiliary materials, chemicals or additives. This protects the environment and resources and helps to generate energy from waste in an environmentally friendly way.
- Catalytic filters are also used for the denitrification or desulfurization of exhaust gases, not only but also in energy recovery from waste.
- One example is shown in this case study:
GORE® Low Emission Filter Bags
GORE® Low Emission Filter Bags are the ultimate bag filter for air pollution control in industries dealing with very fine particulates. Our seam-sealed       filter bags draw on our long experience in the development of filter media to deliver highly effective performance with a low total cost of ownership.
Controlling Particulate Emissions

Though each of our standard filter bags is proven to capture up to 99.99% of emissions, we have created a new filter bag for dust collectors that is      especially effective at helping plants comply with strict regulations like NESHAP in the cement industry. This seam sealing filter equipment uses specially developed filter tape to achieve exceptional filtration performance.

The PTFE-based seam tape used in GORE® Low Emission Filter Bags makes it virtually impossible for dust to leak through the stitch holes. Studies show that emissions spike with each pulse of your cleaning system. Our Low Emission Filter Bags don’t let dust through despite the constant pulsing — eliminating those emissions spikes, reducing your baseline emission level, and even extending bag life.
As the industry has evolved, other filter bag manufacturers have adopted membrane-based seam tape on their filters and technologies — but the Gore membrane remains ahead of the curve. Other seam tapes tend to crack and split during pulsing, eventually exposing stitch hole leak paths after 12–18 months. Our proprietary membrane remains mechanically robust, keeping emissions under control for the life of your filter bags while increasing your total amount of dust collection.

 Cement Applications

Emissions control is a hot topic in the cement industry. Cement plants are driven by throughput, but if they fail to comply with the new NESHAP (National Emission Standards for Hazardous Air Pollutants) regulations, production could be stopped immediately, introducing a slew of cost factors that affect a plant’s bottom line. More than that, though, industrial dust collector filter bags can sometimes be all that stands between you and your social license to operate.

To make it even more challenging for cement plants, the US MACT (Maximum Achievable Control Technology) approach, which sets compliance limits in line with the top 12% of plants, calculates compliance not at a given moment, but on a 30-day rolling average. This is a significant change, as prior to NESHAP, plants had to prove their compliance based on annual tests.

This is why cement producers around the globe trust GORE Low Emission Filter Bags. Once installed, our bags remain reliable, providing unconstrained operations while keeping plants comfortably and continuously compliant. In addition, Gore’s system approach to filtration process optimization includes our technical support for the lifetime of the filter bags.

 Chemical Applications
GORE Low Emission Filter Bags: Durable seam-sealing technology for the most challenging particle capture applications

When filter bags are sewn, the stitch holes create tiny holes, which can become a path for extremely fine or free-flowing particles. For applications in which this small level of emissions is unacceptable, Gore has developed GORE Low Emissions Filter Bags. Each fine particle emissions filter bag features a PTFE-based seam tape over all seams where the filter bag has been sewn, covering all the stitch holes and preventing emissions from leaking through.
When exposed to high temperatures and harsh chemicals, other PTFE tapes will often peel or crack, sometimes making the problem even worse.  Our patented particle emissions filter seam tape stays intact and in-place, typically lasting for the life of the filter bag.  This truly innovative technology serves our customers well in applications such as these:

    maximizing capture of high value ($/kg) particulates
    maximizing capture of very fine or free-flowing particulates
    meeting stringent emissions regulatory limits
    contamination sensitive applications

 Unique System Approach

When you buy baghouse filter bags from Gore, you are buying a partnership with one of the world’s most trusted, time-honored manufacturers and a system approach tailored to your specific needs. There is no shelf of one-size-fits-all ‘chemical processing filters’ – your bags are customized to your application.

As the leading manufacturer and supplier of seam sealing filter equipment, we take a comprehensive approach to developing ideal filtration solutions for your application, in which we:

    determine, design and manufacture the filter bags that fit your specific application and process
    analyze and optimize your total system performance
    provide technical support and troubleshooting for the lifetime of the filter bags

This means you will receive expert support not just on bag design and installation, but also on how to optimize the flow and cleaning parameters of your system to get the absolute best productivity. This process-specific product design and applications engineering approach has proven to be the lowest risk way to optimize your system's performance.

We understand that you do not always have baghouse filter bag experts on staff. As your partner, we will be on call to get you back up and running if you experience any problems relating to your baghouse operations.