Algae Processing is Fueling the Aviation Industry

Posted in: , on 24. Aug. 2014 - 20:06

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Algae Processing is Fueling the Aviation Industry

by David Phillips, H&P Aug 20, 2014

The search is on for alternative sources of fuel. Social and political instability in the vicinity of major oil producing regions has led to rising prices, which hampers a slow economic recovery as consumers are forced to spend more of their limited incomes on gasoline. Major spills in waterways and in the Gulf of Mexico provide dramatic reminders of the risks inherent in oil exploration and production, and their effect on the environment.

In response to some of these issues, some companies are developing processing plants to manufacture "bio jet fuel" from vegetable oil, sugars, animal fats and algae. Algae is by far the most available of these substances, and offers great promise for delivering economical alternatives to petroleum-based fuels.


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Algae culture



Algae is among the oldest form of life on the planet and is the most efficient producer of plant oils, also known as triglycerides. These oils can now be transformed into a renewable energy source with a virtually unlimited supply. In addition to its greater availability, algae offers several advantages over traditional oilseed crops like corn and soybeans, such as greater oil content, greater biodiesel production capability and higher energy content. For example, soybeans have an oil content of 20% drymass, compared to 35-65% for algae.

Algae can be grown in commercial beds, similar to cranberry crops, and then harvested for processing. Algae can produce between 2000 and 5000 gallons of fuel per acre.

Testing for algae based fuels began in 2008, and bio jet fuel is now commercially available and approved for commercial aviation. Several companies are working on processes to extract the fuel from algae, and have produced positive results in both commercial and military environments. In November 2011, United Airlines Flight 1403 flew from Houston to Chicago on a 40 percent blend of algae jet fuel, becoming the first U.S. commercial flight powered in part by algae-based bio fuel.

One of the most important facets of the bio jet fuel process is drying huge amounts of algae in a manner that is efficient, economical and reliable. Heavy duty, high capacity rotary dryers offer the best solution for extracting any combustible materials from a sea water and algae-based slurry.

These same heavy duty industrial dryers are currently used for drying sand in the oil and gas industries and have been used for many years to dry materials such as limestone, grain, soil, ore, fertilizer, wood chips and sewage sludge.

Custom designed Renneburg Rotary Dryers (http://www.heylpatterson.com/dryerscoolers.aspx) from Heyl & Patterson can be used to dry algae. Moisture is extracted and the algae can then be processed into biofuel that can be used as jet fuel. Heyl & Patterson develops customized thermal processing solutions for many different applications including the emerging bio jet fuel industry and is a leader in processing renewable energy fuels. Any application can be tested in Heyl & Patterson's pilot plant testing facility (http://www.heylpatterson.com/laboratorytests.aspx) to determine the variables involved in the process.


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H&P Rotary Dryer



Heyl & Patterson offers state-of-the-art, custom engineered rotary dryers and coolers that are designed to a customer's specifications, creating a system that is the perfect fit for a company's needs. Our company has been in the thermal processing industry for over 125 years, and that is reflected in the quality of the products we offer.

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