Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

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

Source: U.S. Patent 7,875,090 B2. January 25, 2011. 29 pgs. Int. Classif. C01B 3/36.https://patents.google.com/patent/US7875090B2/en?oq=12%2f108%2c747

Author(s)Dietenberger, Mark; Anderson, Mark

Publication Year: 2013  View Document »

Category: Patents

Abstract: Disclosed are a method and a corresponding apparatus for converting a biomass reactant to synthesis gas. The method includes the steps of (1) heating biomass in a first molten liquid bath at a first temperature, wherein the first temperature is at least about 100°C., but less than the decomposition temperature of the biomass, wherein gas comprising water is evaporated and air pressed from the biomass, thereby yielding dried biomass with a 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, where in the second temperature is sufficiently high to cause flash pyrolysis of char. (4) Inserting recaptured steam into the process gas, which may optionally include external natural gas or hydrogen as or recycled syngas for mixing and reforming with tar and non-condensable gases. (5) Further reacting the product gases, tar, and char with the process gas within a third molten liquid bath at a third temperature which is equal to tor 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 of the synthesis gas o 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: biomass, synthesis gas, conversion, flash pyrolysis, molten liquid

Date posted: 10/24/2013
RITS Product ID: 66620
Current FPL Scientist associated with this product
Dietenberger, Mark A.
Research General Engineer
  

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »


Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »


Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


Nanotechnology

A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »


Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »