Cooler and particulate separator for an off-gas stack
Abstract
This report describes an off-gas stack for a melter, furnace or reaction vessel comprising an air conduit leading to two sets of holes, one set injecting air into the off-gas stack near the melter plenum and the second set injecting air downstream of the first set. The first set injects air at a compound angle, having both downward and tangential components, to create a reverse vortex flow, counter to the direction of flow of gas through the stack and also along the periphery of the stack interior surface. Air from the first set of holes prevents recirculation zones from forming and the attendant accumulation of particulate deposits on the wall of the stack and will also return to the plenum any particulate swept up in the gas entering the stack. The second set of holes injects air in the same direction as the gas in the stack to compensate for the pressure drop and to prevent the concentration of condensate in the stack. A set of sprayers, receiving water from a second conduit, is located downstream of the second set of holes and sprays water into the gas to further cool it.
- Inventors:
- Issue Date:
- Research Org.:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 10138238
- Patent Number(s):
- 7681292
- Application Number:
- ON: DE93008216; PAN: 7-681,292
- Assignee:
- Dept. of Energy
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60N - SEATS SPECIALLY ADAPTED FOR VEHICLES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 8 Apr 1991
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; PARTICULATES; AIR POLLUTION CONTROL; OFF-GAS SYSTEMS; COOLING; INVENTIONS; STACKS; AIR FLOW; GAS FLOW; POLLUTION CONTROL EQUIPMENT; DESIGN; 540120; CHEMICALS MONITORING AND TRANSPORT
Citation Formats
Wright, G T. Cooler and particulate separator for an off-gas stack. United States: N. p., 1991.
Web.
Wright, G T. Cooler and particulate separator for an off-gas stack. United States.
Wright, G T. Mon .
"Cooler and particulate separator for an off-gas stack". United States. https://www.osti.gov/servlets/purl/10138238.
@article{osti_10138238,
title = {Cooler and particulate separator for an off-gas stack},
author = {Wright, G T},
abstractNote = {This report describes an off-gas stack for a melter, furnace or reaction vessel comprising an air conduit leading to two sets of holes, one set injecting air into the off-gas stack near the melter plenum and the second set injecting air downstream of the first set. The first set injects air at a compound angle, having both downward and tangential components, to create a reverse vortex flow, counter to the direction of flow of gas through the stack and also along the periphery of the stack interior surface. Air from the first set of holes prevents recirculation zones from forming and the attendant accumulation of particulate deposits on the wall of the stack and will also return to the plenum any particulate swept up in the gas entering the stack. The second set of holes injects air in the same direction as the gas in the stack to compensate for the pressure drop and to prevent the concentration of condensate in the stack. A set of sprayers, receiving water from a second conduit, is located downstream of the second set of holes and sprays water into the gas to further cool it.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {4}
}