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Title: Process for making ceramic hot gas filter

Abstract

A ceramic hot-gas candle filter having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during backpulse cleaning and is resistant to chemical degradation at high temperatures.

Inventors:
 [1];  [2];  [3];  [4];  [5]
  1. (Wilmington, DE)
  2. (Landenberg, PA)
  3. (New Castle, DE)
  4. (Hockessin, DE)
  5. (Boothwyn, PA)
Issue Date:
Research Org.:
ALLIED-SIGNAL COMPOSITES INC
OSTI Identifier:
873522
Patent Number(s):
6180054
Assignee:
AlliedSignal Composites Inc. (Newark, DE) NETL
DOE Contract Number:  
AC21-94MC31214
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; ceramic; hot; gas; filter; hot-gas; candle; porous; support; filament-wound; oxide; yarn; partially; surrounded; refractory; matrix; membrane; layer; surface; outer; inner; formed; arrangement; circularly; wound; continuous; filament; filler; material; permeable; structure; combination; particularly; effective; features; gaps; intentionally; placed; adjacent; windings; particulates; uniformly; distributed; throughout; gap; region; withstand; thermal; cycling; backpulse; cleaning; resistant; chemical; degradation; temperatures; uniformly distribute; continuous filament; gas filter; filler material; ceramic matrix; thermal cycling; inner surface; outer surface; hot gas; support structure; uniformly distributed; porous support; oxide ceramic; membrane layer; distributed throughout; refractory oxide; ceramic particulates; particularly effective; withstand thermal; candle filter; ceramic hot-gas; ceramic filler; ceramic yarn; porous refractory; ceramic particulate; partially surrounded; hot-gas candle; filament-wound oxide; ceramic hot; /264/55/156/

Citation Formats

Connolly, Elizabeth Sokolinski, Forsythe, George Daniel, Domanski, Daniel Matthew, Chambers, Jeffrey Allen, and Rajendran, Govindasamy Paramasivam. Process for making ceramic hot gas filter. United States: N. p., 2001. Web.
Connolly, Elizabeth Sokolinski, Forsythe, George Daniel, Domanski, Daniel Matthew, Chambers, Jeffrey Allen, & Rajendran, Govindasamy Paramasivam. Process for making ceramic hot gas filter. United States.
Connolly, Elizabeth Sokolinski, Forsythe, George Daniel, Domanski, Daniel Matthew, Chambers, Jeffrey Allen, and Rajendran, Govindasamy Paramasivam. Mon . "Process for making ceramic hot gas filter". United States. https://www.osti.gov/servlets/purl/873522.
@article{osti_873522,
title = {Process for making ceramic hot gas filter},
author = {Connolly, Elizabeth Sokolinski and Forsythe, George Daniel and Domanski, Daniel Matthew and Chambers, Jeffrey Allen and Rajendran, Govindasamy Paramasivam},
abstractNote = {A ceramic hot-gas candle filter having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during backpulse cleaning and is resistant to chemical degradation at high temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

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