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Title: Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils

Abstract

A process for producing a brightness stabilization mixture of water-soluble organic compounds from biomass pyrolysis oils comprising: a) size-reducing biomass material and pyrolyzing the size-reduced biomass material in a fluidized bed reactor; b) separating a char/ash component while maintaining char-pot temperatures to avoid condensation of pyrolysis vapors; c) condensing pyrolysis gases and vapors, and recovering pyrolysis oils by mixing the oils with acetone to obtain an oil-acetone mixture; d) evaporating acetone and recovering pyrolysis oils; e) extracting the pyrolysis oils with water to obtain a water extract; f) slurrying the water extract with carbon while stirring, and filtering the slurry to obtain a colorless filtrate; g) cooling the solution and stabilizing the solution against thermally-induced gelling and solidification by extraction with ethyl acetate to form an aqueous phase lower layer and an organic phase upper layer; h) discarding the upper organic layer and extracting the aqueous layer with ethyl acetate, and discarding the ethyl acetate fraction to obtain a brown-colored solution not susceptible to gelling or solidification upon heating; i) heating the solution to distill off water and other light components and concentrating a bottoms fraction comprising hydroxyacetaldehyde and other non-volatile components having high boiling points; and j) decolorizing themore » stabilized brown solution with activated carbon to obtain a colorless solution.« less

Inventors:
 [1];  [2]
  1. Blacksburg, VA
  2. Flemington, NJ
Issue Date:
Research Org.:
Midwest Research Institute, Kansas City, MO (United States)
OSTI Identifier:
873577
Patent Number(s):
6193837
Assignee:
Midwest Research Institute (Kansas City, MO)
Patent Classifications (CPCs):
D - TEXTILES D21 - PAPER-MAKING D21H - PULP COMPOSITIONS
D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
preparation; brightness; stabilization; agent; lignin; containing; pulp; biomass; pyrolysis; oils; process; producing; mixture; water-soluble; organic; compounds; comprising; size-reducing; material; pyrolyzing; size-reduced; fluidized; bed; reactor; separating; char; ash; component; maintaining; char-pot; temperatures; avoid; condensation; vapors; condensing; gases; recovering; mixing; acetone; obtain; oil-acetone; evaporating; extracting; water; extract; slurrying; carbon; stirring; filtering; slurry; colorless; filtrate; cooling; solution; stabilizing; thermally-induced; gelling; solidification; extraction; ethyl; acetate; form; aqueous; phase; layer; upper; discarding; fraction; brown-colored; susceptible; heating; distill; light; components; concentrating; bottoms; hydroxyacetaldehyde; non-volatile; boiling; decolorizing; stabilized; brown; activated; pyrolysis oils; upper layer; pyrolysis gas; bottoms fraction; pyrolysis oil; volatile components; activated carbon; organic compound; bed reactor; organic phase; organic compounds; fluidized bed; aqueous phase; ethyl acetate; biomass material; water-soluble organic; stabilization agent; pyrolysis gases; volatile component; fraction comprising; action comprising; soluble organic; brightness stabilization; biomass pyrolysis; /162/8/201/203/999/585/

Citation Formats

Agblevor, Foster A, and Besler-Guran, Serpil. Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils. United States: N. p., 2001. Web.
Agblevor, Foster A, & Besler-Guran, Serpil. Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils. United States.
Agblevor, Foster A, and Besler-Guran, Serpil. Mon . "Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils". United States. https://www.osti.gov/servlets/purl/873577.
@article{osti_873577,
title = {Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils},
author = {Agblevor, Foster A and Besler-Guran, Serpil},
abstractNote = {A process for producing a brightness stabilization mixture of water-soluble organic compounds from biomass pyrolysis oils comprising: a) size-reducing biomass material and pyrolyzing the size-reduced biomass material in a fluidized bed reactor; b) separating a char/ash component while maintaining char-pot temperatures to avoid condensation of pyrolysis vapors; c) condensing pyrolysis gases and vapors, and recovering pyrolysis oils by mixing the oils with acetone to obtain an oil-acetone mixture; d) evaporating acetone and recovering pyrolysis oils; e) extracting the pyrolysis oils with water to obtain a water extract; f) slurrying the water extract with carbon while stirring, and filtering the slurry to obtain a colorless filtrate; g) cooling the solution and stabilizing the solution against thermally-induced gelling and solidification by extraction with ethyl acetate to form an aqueous phase lower layer and an organic phase upper layer; h) discarding the upper organic layer and extracting the aqueous layer with ethyl acetate, and discarding the ethyl acetate fraction to obtain a brown-colored solution not susceptible to gelling or solidification upon heating; i) heating the solution to distill off water and other light components and concentrating a bottoms fraction comprising hydroxyacetaldehyde and other non-volatile components having high boiling points; and j) decolorizing the stabilized brown solution with activated carbon to obtain a colorless solution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}