Method of enhancing the quality of high-moisture materials using system heat sources

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United States of America Patent

PATENT NO 8579999
APP PUB NO 20060075682A1
SERIAL NO

11107152

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Abstract

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The present invention harvests and utilizes fluidized bed drying technology and waste heat streams augmented by other available heat sources to dry feedstock or fuel. This method is useful in many industries, including coal-fired power plants. Coal is dried using the present invention before it goes to coal pulverizers and on to the furnace/boiler arrangement. Coal can be intercepted on current coal feed systems ahead of the pulverizers. Drying fuel, such as coal, is done to improve boiler efficiency and reduce emissions. A two-stage bed utilized in the process first “pre-dries and separates” the feed stream into desirable and undesirable feedstock. Then, it incrementally dries and segregates fluidizable and non-fluidizable material from the product stream. This is all completed in a low-temperature, open-air system. Elevation of fan room air temperature is also accomplished using waste heat, thereby making available to the plant system higher temperature media to enhance the feedstock drying process.

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Patent Owner(s)

Patent OwnerAddress
RAINBOW ENERGY CENTER LLC919 S 7TH ST SUITE 405 BISMARK ND 58504

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bullinger, Charles W Bismarck, US 5 136
James, Dennis R Bismarck, US 4 105
Levy, Edward K Bethlehem, US 8 182
Ness, Mark A Underwood, US 10 230
Sarunac, Nenad Easton, US 8 168
Weinstein, Richard S Bismarck, US 5 114

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