Fluidized bed biogasifier and method for gasifying biosolids

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United States of America Patent

PATENT NO 9809769
APP PUB NO 20160168492A1
SERIAL NO

14967973

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Abstract

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A fluidized bed biogasifier is provided for gasifying biosolids. The biogasifier includes a reactor vessel and a feeder for feeding biosolids into the reactor vessel at a desired feed rate during steady-state operation of the biogasifier. A fluidized bed in the base of the reactor vessel has a cross-sectional area that is proportional to at least the fuel feed rate such that the superficial velocity of gas is in the range of 0.1 m/s (0.33 ft/s) to 3 m/s (9.84 ft/s). In a method for gasifying biosolids, biosolids are fed into a fluidized bed reactor. Oxidant gases are applied to the fluidized bed reactor to produce a superficial velocity of producer gas in the range of 0.1 m/s (0.33 ft/s) to 3 m/s (9.84 ft/s). The biosolids are heated inside the fluidized bed reactor to a temperature range between 900° F. (482.2° C.) and 1700° F. (926.7° C.) in an oxygen-starved environment having a sub-stoichiometric oxygen level, whereby the biosolids are gasified.

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Patent Owner(s)

Patent OwnerAddress
ARIES GASIFICATION LLC3026 OWEN DRIVE SUITE 101 NASHVILLE TN 37013

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bull, Douglas R Vancouver, CA 5 33
Cairney, Paul Deltona, US 5 33
Cox, Gerald M Cocoa, US 17 834
Jepson, William P Orlando, US 10 167
Patten, Ross M Palm Coast, US 4 25

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