Power Generation

Graver Technologies has engineered top-quality filters for power generation to remove impurities that could result in damage to machinery such as boilers, steam generators, reactors, or turbines.

Fossil fuel (coal, oil, gas) and nuclear power stations produce electricity with turbines powered with high-pressure steam. During the process of steam generation in power plants, the steam cools, forms condensate and is then utilized as boiler feedwater. The condensate must be purified or "polished" in order to remove impurities for the ultimate purpose of removing all soluble impurities in order protect the high-pressure boilers, steam generators, reactors, and turbines. Condensate polishing typically involves ion exchange technology for the removal of these trace dissolved minerals and suspended matter including silica oxides and sodium, iron oxide particulates from corrosion, also called 'crud', and other contaminants which can cause corrosion and maintenance issues. The condensate polisher will require back washing and regeneration based on increasing pressure drop and on ionic exhaustion.

Needs a heading

Graver is the world’s largest supplier of condensate system filters and components and has been manufacturing precoat and non-precoat septa for condensate systems for more than 50 years. Graver is the consistent technology innovator with more than 40 patents and numerous technical advances, providing the know-how and ability to modify ion exchange media, both mechanically and chemically, for the removal of trace containments from condensate and other high purity water streams in power generation. We provide expertise in the design, manufacturing and application of specialty back-washable filter elements for power generation used alone or in combination with ion exchange. With our extensive experience in engineered septa for the high value HPCPU power generation market along with an engineered line of products for specific applications (PWR, BWR, Fossil) as well as reputation for quality, performance, competitiveness, and service, Graver Technologies can support customers with superior products and services.

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Frequently Asked Questions

How do you filter sediment and yeast from beer?

Post fermentation removal of sediment and yeast is typically done using high solids removal technology such as lenticulars, filter press or even microfiltration crossflow. Any remaining sediment and yeast can effectively be removed in the filtration step prior to the bottling process. In types of beer, haze often caused by protein complexes can develop and these can be addressed using a charged media such as glass.

Do water filters remove PFAS chemicals?

Water filters containing ion exchange resins and/or activated carbon can remove PFAS chemicals.

How to remove heavy metals from water and wastewater?

Many MetSorb(R) adsorbents will remove heavy metals from water and wastewater. Please view our product pages for more information.

How can PFAS be removed from water?

PFAS can be removed with adsorbents and ion exchange resins like MetSorb(R) PFX.

How can I remove lead from water?

Many MetSorb(R) adsorbents will remove lead and other heavy metals from water. Please view our product pages for more information.

Do refrigerator water filters remove arsenic?

Always check labeling for certification of contaminant removal from filter products.

Which filter is most commonly used in fermentation?

Several essential applications for filters. Tank vent or fermentation feed air filters, the choice of which depends upon the specific method being used in the fermentation process, ensure that particles and microbes do not enter the process through air sources. These filters should utilize a hydrophobic membrane such as PTFE and have claims for sterility. A second area is to ensure that all fluids in the process are microbial-free, so filtration using a 0.2 micron hydrophilic membrane filter that is rated as sterilizing grade is commonly used. This would apply to water, nutrient broths or any liquid additive essential to the process.

How do you clean OEM filters?

Most filters are synthetic materials and thus are not designed to be cleaned and reused. Filters are generally intended to be used until plugged, which can be defined by loss of flow or a terminal pressure drop increase.

What is a pre reverse osmosis filters and why is it necessary?

In order to maximize the life of reverse osmosis membranes, it is highly recommended to use a filter in front of the membrane with the goals of reducing the risk of fouling the membrane. Membrane fouling is the main cause of permeate flux decline and loss of product quality in reverse osmosis systems. Silt Density Index or SDI (ASTM standard test method D 4189-82), is the empirical test developed for measuring the potential rate of fouling of RO membranes

Why is water aerated during water treatment?

Aeration helps remove dissolved gasses and� oxidizes dissolved metals, including iron and hydrogen sulfide, as well as break-down organic molecules and volatile organic chemicals (VOCs)

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