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Requested Product

Title: Method and Apparatus to Produce Synthesis Gas Via Flash Pyrolysis and Gasification in a Molten Liquid

Source: U.S. Patent B2 8,529,644. September 10, 2013. Int. Classif. B01J 7/00.

Author(s)Dietenberger, Mark; Anderson, Mark

Publication Year: 2016  View Document »

Category: Patents

Abstract: Disclosed are a method and correspondig apparatus for converting a biomass reactant into synthesis gas.  The method includes the steps of (1) heating biomass in the first molten liquid bath at a first temperature, wherein the first temperature is at least about 100C., but less than the decomposition temberature of the biomass, wherein gas comprising ater is evaporated and air is pressed from the biomass, thereby yielding dried biomass with minimal air content.  (2) Recapturing the moisture evaporated from the biomass in step 1 for use in the process gas.  (3) Heating the dried biomass in a second molten liquid bath at a second temperature, wherein the second temperature is sufficiently high to cause flash pyrolysis of the dried biomass, thereby yielding product gases, tar, and char.  (4) Inserting recaptured steam into the process gas, which may optionally include external natural gas or hydrogen gas or recycled syngas for mixing and reformig with tar and non-condensable gases. (5) Further reacting thte produdt gases, tar and char with the proces gas within a third molten liquid bath at a third temperature which is eq2ual to or greater than the second temperature within the second molten liquid bath, thereby yielding high quality and relatively clean synthesis gas after a relatively long residence time needed for char gasification.  A portion fo the synthesis gas so formed is combusted to heat the first, second , and third molten liquid baths, unless external natural or hydrogen gas is available for this use.

Keywords: synthesis gas, flash pyrolysis, gasification, molten liquid

Date posted: 10/28/2016
RITS Product ID: 83601
Current FPL Scientist associated with this product
Dietenberger, Mark A.
Research General Engineer

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