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Title: Process and continuous apparatus for chemical conversion of materials

Abstract

A process and apparatus for the acid hydrolysis of waste cellulose to glucose of the type wherein waste cellulose is continuously fed into an inlet port of a twin screw extruder, water is continuously fed into reaction zone in the extruder, downstream of the inlet port, the cellulose is continuously reacted with water in the presence of an acid catalyst at elevated temperature and pressure in the reaction zone while being continuously conveyed to an outlet port of the extruder having a given diameter and the reacted cellulose is discharged from the extruder while the elevated temperature and pressure in the reaction zone is maintained. The elevated pressure is maintained by forming a dynamic seal zone at the upstream end of the reaction and continuously discharging the reacted material downstream of the outlet port at a predetermined volume rate of flow to maintain the pressure by passing the discharge through an orifice pipe having a smaller diameter than the given diameter of the outlet port.

Inventors:
 [1];  [2]
  1. (New York, NY)
  2. (Ramsey, NJ)
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
OSTI Identifier:
864596
Patent Number(s):
4390375
Assignee:
New York University (New York, NY) NREL
DOE Contract Number:  
EG-77-C-01-4042
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; continuous; apparatus; chemical; conversion; materials; acid; hydrolysis; waste; cellulose; glucose; type; continuously; fed; inlet; twin; screw; extruder; water; reaction; zone; downstream; reacted; presence; catalyst; elevated; temperature; pressure; conveyed; outlet; diameter; discharged; maintained; forming; dynamic; seal; upstream; discharging; material; predetermined; volume; rate; flow; maintain; passing; discharge; orifice; pipe; acid catalyst; continuously fed; predetermined volume; elevated temperature; reaction zone; elevated pressure; acid hydrolysis; chemical conversion; waste cellulose; dynamic seal; /127/

Citation Formats

Rugg, Barry, and Stanton, Robert. Process and continuous apparatus for chemical conversion of materials. United States: N. p., 1983. Web.
Rugg, Barry, & Stanton, Robert. Process and continuous apparatus for chemical conversion of materials. United States.
Rugg, Barry, and Stanton, Robert. Sat . "Process and continuous apparatus for chemical conversion of materials". United States. https://www.osti.gov/servlets/purl/864596.
@article{osti_864596,
title = {Process and continuous apparatus for chemical conversion of materials},
author = {Rugg, Barry and Stanton, Robert},
abstractNote = {A process and apparatus for the acid hydrolysis of waste cellulose to glucose of the type wherein waste cellulose is continuously fed into an inlet port of a twin screw extruder, water is continuously fed into reaction zone in the extruder, downstream of the inlet port, the cellulose is continuously reacted with water in the presence of an acid catalyst at elevated temperature and pressure in the reaction zone while being continuously conveyed to an outlet port of the extruder having a given diameter and the reacted cellulose is discharged from the extruder while the elevated temperature and pressure in the reaction zone is maintained. The elevated pressure is maintained by forming a dynamic seal zone at the upstream end of the reaction and continuously discharging the reacted material downstream of the outlet port at a predetermined volume rate of flow to maintain the pressure by passing the discharge through an orifice pipe having a smaller diameter than the given diameter of the outlet port.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

Patent:

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