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Title: Tower reactors for bioconversion of lignocellulosic material

Abstract

An apparatus for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets.

Inventors:
 [1]
  1. (16458 W. 1st Ave., Golden, CO 80401)
Issue Date:
Research Org.:
Midwest Research Institute
OSTI Identifier:
872228
Patent Number(s):
5888806
Assignee:
Nguyen, Quang A. (16458 W. 1st Ave., Golden, CO 80401) NREL
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
tower; reactors; bioconversion; lignocellulosic; material; apparatus; enzymatic; hydrolysis; fermentation; pretreated; form; bioreactor; mixers; achieve; intermittent; mixing; precise; effective; heat; mass; transfer; requirements; damaging; denaturing; enzymes; fermenting; microorganisms; slurry; pumped; upwards; downwards; mixed; periodically; passes; zones; located; alternate; achieved; pumping; loop; serves; device; additional; takes; reactor; jackets; cellulosic material; additional heat; heat transfer; mass transfer; reactor heat; lignocellulosic material; enzymatic hydrolysis; transfer device; transfer jacket; transfer takes; transfer requirements; mixing zone; effective heat; tower bioreactor; tower reactors; intermittent mixing; pretreated lignocellulosic; achieve intermittent; /435/

Citation Formats

Nguyen, Quang A. Tower reactors for bioconversion of lignocellulosic material. United States: N. p., 1999. Web.
Nguyen, Quang A. Tower reactors for bioconversion of lignocellulosic material. United States.
Nguyen, Quang A. Fri . "Tower reactors for bioconversion of lignocellulosic material". United States. https://www.osti.gov/servlets/purl/872228.
@article{osti_872228,
title = {Tower reactors for bioconversion of lignocellulosic material},
author = {Nguyen, Quang A.},
abstractNote = {An apparatus for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

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