skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Process for off-gas particulate removal and apparatus therefor

Abstract

In the event of a breach in the off-gas line of a melter operation requiring closure of the line, a secondary vessel vent line is provided with a particulate collector utilizing atomization for removal of large particulates from the off-gas. The collector receives the gas containing particulates and directs a portion of the gas through outer and inner annular channels. The collector further receives a fluid, such as water, which is directed through the outer channel together with a second portion of the particulate-laden gas. The outer and inner channels have respective ring-like termination apertures concentrically disposed adjacent one another on the outer edge of the downstream side of the particulate collector. Each of the outer and inner channels curves outwardly away from the collector`s centerline in proceeding toward the downstream side of the collector. Gas flow in the outer channel maintains the fluid on the channel`s wall in the form of a ``wavy film,`` while the gas stream from the inner channel shears the fluid film as it exits the outer channel in reducing the fluid to small droplets. Droplets formed by the collector capture particulates in the gas stream by one of three mechanisms: impaction, interception or Brownianmore » diffusion in removing the particulates. The particulate-laden droplets are removed from the fluid stream by a vessel vent condenser or mist eliminator. 4 figs.« less

Inventors:
Issue Date:
Research Org.:
West Valley Nuclear Services
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
541721
Patent Number(s):
5,679,135
Application Number:
PAN: 8-600,105; TRN: 97:019545
Assignee:
Dept. of Energy, Washington, DC (United States) IDO; SCA: 052001; PA: EDB-97:140829; SN: 97001865594
DOE Contract Number:  
AC07-81NE44139
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 21 Oct 1997
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; CERAMIC MELTERS; OFF-GAS SYSTEMS; RADIOACTIVE WASTE PROCESSING; DESIGN; PARTICULATES; DEASHING; OPERATION; EMERGENCY PLANS; DROPLETS; MIST EXTRACTORS

Citation Formats

Carl, D.E. Process for off-gas particulate removal and apparatus therefor. United States: N. p., 1997. Web.
Carl, D.E. Process for off-gas particulate removal and apparatus therefor. United States.
Carl, D.E. Tue . "Process for off-gas particulate removal and apparatus therefor". United States.
@article{osti_541721,
title = {Process for off-gas particulate removal and apparatus therefor},
author = {Carl, D.E.},
abstractNote = {In the event of a breach in the off-gas line of a melter operation requiring closure of the line, a secondary vessel vent line is provided with a particulate collector utilizing atomization for removal of large particulates from the off-gas. The collector receives the gas containing particulates and directs a portion of the gas through outer and inner annular channels. The collector further receives a fluid, such as water, which is directed through the outer channel together with a second portion of the particulate-laden gas. The outer and inner channels have respective ring-like termination apertures concentrically disposed adjacent one another on the outer edge of the downstream side of the particulate collector. Each of the outer and inner channels curves outwardly away from the collector`s centerline in proceeding toward the downstream side of the collector. Gas flow in the outer channel maintains the fluid on the channel`s wall in the form of a ``wavy film,`` while the gas stream from the inner channel shears the fluid film as it exits the outer channel in reducing the fluid to small droplets. Droplets formed by the collector capture particulates in the gas stream by one of three mechanisms: impaction, interception or Brownian diffusion in removing the particulates. The particulate-laden droplets are removed from the fluid stream by a vessel vent condenser or mist eliminator. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {10}
}