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 »
- Inventors:
- Issue Date:
- Research Org.:
- West Valley Nuclear Services
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 541721
- Patent Number(s):
- 5679135
- Application Number:
- PAN: 8-600,105; TRN: 97:019545
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- 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 = {Tue Oct 21 00:00:00 EDT 1997},
month = {Tue Oct 21 00:00:00 EDT 1997}
}