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Title: Method for immobilizing particulate materials in a packed bed

Abstract

The present invention pertains generally to immobilizing particulate matter contained in a "packed" bed reactor so as to prevent powder migration, compaction, coalescence, or the like. More specifically, this invention relates to a technique for immobilizing particulate materials using a microporous foam-like polymer such that a) the particulate retains its essential chemical nature, b) the local movement of the particulate particles is not unduly restricted, c) bulk powder migration and is prevented, d) physical and chemical access to the particulate is unchanged over time, and e) very high particulate densities are achieved. The immobilized bed of the present invention comprises a vessel for holding particulate matter, inlet and an outlet ports or fittings, a loosely packed bed of particulate material contained within the vessel, and a three dimensional porous matrix for surrounding and confining the particles thereby fixing the movement of individual particle to a limited local position. The established matrix is composed of a series of cells or chambers comprising walls surrounding void space, each wall forming the wall of an adjacent cell; each wall containing many holes penetrating through the wall yielding an overall porous structure and allowing useful levels of gas transport.

Inventors:
 [1];  [2];  [2];  [3];  [2];  [4]
+ Show Inventor Affiliations
  1. (Livermore, CA)
  2. Livermore, CA
  3. Lafayette, CA
  4. Manteca, CA
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
872128
Patent Number(s):
5866623
Assignee:
Sandia Corporation (Livermore, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
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DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; immobilizing; particulate; materials; packed; bed; pertains; matter; contained; reactor; prevent; powder; migration; compaction; coalescence; specifically; relates; technique; microporous; foam-like; polymer; retains; essential; chemical; nature; local; movement; particles; unduly; restricted; bulk; prevented; physical; access; unchanged; time; densities; achieved; immobilized; comprises; vessel; holding; inlet; outlet; ports; fittings; loosely; material; dimensional; porous; matrix; surrounding; confining; fixing; individual; particle; limited; position; established; composed; series; cells; chambers; comprising; walls; void; space; wall; forming; adjacent; cell; containing; holes; penetrating; yielding; overall; structure; allowing; useful; levels; gas; transport; porous foam; outlet ports; individual particle; wall forming; packed bed; porous structure; particulate matter; bed reactor; particulate material; adjacent cell; void space; particulate materials; material contained; porous matrix; immobilizing particulate; holes penetrating; wall form; prevent powder; /521/

Citation Formats

Even, Jr., William R., Guthrie, Stephen E, Raber, Thomas N, Wally, Karl, Whinnery, LeRoy L, and Zifer, Thomas. Method for immobilizing particulate materials in a packed bed. United States: N. p., 1999. Web.
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Even, Jr., William R., Guthrie, Stephen E, Raber, Thomas N, Wally, Karl, Whinnery, LeRoy L, & Zifer, Thomas. Method for immobilizing particulate materials in a packed bed. United States.
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Even, Jr., William R., Guthrie, Stephen E, Raber, Thomas N, Wally, Karl, Whinnery, LeRoy L, and Zifer, Thomas. Fri . "Method for immobilizing particulate materials in a packed bed". United States. https://www.osti.gov/servlets/purl/872128.
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@article{osti_872128,
title = {Method for immobilizing particulate materials in a packed bed},
author = {Even, Jr., William R. and Guthrie, Stephen E and Raber, Thomas N and Wally, Karl and Whinnery, LeRoy L and Zifer, Thomas},
abstractNote = {The present invention pertains generally to immobilizing particulate matter contained in a "packed" bed reactor so as to prevent powder migration, compaction, coalescence, or the like. More specifically, this invention relates to a technique for immobilizing particulate materials using a microporous foam-like polymer such that a) the particulate retains its essential chemical nature, b) the local movement of the particulate particles is not unduly restricted, c) bulk powder migration and is prevented, d) physical and chemical access to the particulate is unchanged over time, and e) very high particulate densities are achieved. The immobilized bed of the present invention comprises a vessel for holding particulate matter, inlet and an outlet ports or fittings, a loosely packed bed of particulate material contained within the vessel, and a three dimensional porous matrix for surrounding and confining the particles thereby fixing the movement of individual particle to a limited local position. The established matrix is composed of a series of cells or chambers comprising walls surrounding void space, each wall forming the wall of an adjacent cell; each wall containing many holes penetrating through the wall yielding an overall porous structure and allowing useful levels of gas transport.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}
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Works referenced in this record:

Emulsion-Derived Foams Preparation, Properties, and Application
journal, April 1994

Surface and near-surface structure in carbon microcellular materials produced from organic aerogels and xerogels
journal, June 1995

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