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Title: Method for the abatement of hydrogen chloride

Abstract

The present invention provides a method for reducing the amount of hydrogen chloride contained in a gas stream by reacting the hydrogen chloride with ammonia in the gas phase so as to produce ammonium chloride. The combined gas stream is passed into a condensation and collection vessel and a cyclonic flow is created in the combined gas stream as it passes through the vessel. The temperature of the gas stream is reduced in the vessel to below the condensation temperature of ammonium chloride in order to crystallize the ammonium chloride on the walls of the vessel. The cyclonic flow creates a turbulence which breaks off the larger particles of ammonium chloride which are, in turn, driven to the bottom of the vessel where the solid ammonium chloride can be removed from the vessel. The gas stream exiting from the condensation and collection vessel is further cleaned and additional ammonium chloride is removed by passing through additional filters.

Inventors:
 [1];  [1]
  1. Idaho Falls, OH
Publication Date:
OSTI Identifier:
862892
Patent Number(s):
US 4038369
Assignee:
United States of America as represented by United States Energy (Washington, DC)
DOE Contract Number:  
E(10-1)-1375
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; abatement; hydrogen; chloride; provides; reducing; amount; contained; gas; stream; reacting; ammonia; phase; produce; ammonium; combined; passed; condensation; collection; vessel; cyclonic; flow; created; passes; temperature; reduced; below; crystallize; walls; creates; turbulence; breaks; larger; particles; driven; bottom; solid; removed; exiting; cleaned; additional; passing; filters; gas phase; gas stream; hydrogen chloride; ammonium chloride; larger particles; collection vessel; combined gas; /423/

Citation Formats

Winston, Steven J, and Thomas, Thomas R. Method for the abatement of hydrogen chloride. United States: N. p., 1977. Web.
Winston, Steven J, & Thomas, Thomas R. Method for the abatement of hydrogen chloride. United States.
Winston, Steven J, and Thomas, Thomas R. Sat . "Method for the abatement of hydrogen chloride". United States. https://www.osti.gov/servlets/purl/862892.
@article{osti_862892,
title = {Method for the abatement of hydrogen chloride},
author = {Winston, Steven J and Thomas, Thomas R},
abstractNote = {The present invention provides a method for reducing the amount of hydrogen chloride contained in a gas stream by reacting the hydrogen chloride with ammonia in the gas phase so as to produce ammonium chloride. The combined gas stream is passed into a condensation and collection vessel and a cyclonic flow is created in the combined gas stream as it passes through the vessel. The temperature of the gas stream is reduced in the vessel to below the condensation temperature of ammonium chloride in order to crystallize the ammonium chloride on the walls of the vessel. The cyclonic flow creates a turbulence which breaks off the larger particles of ammonium chloride which are, in turn, driven to the bottom of the vessel where the solid ammonium chloride can be removed from the vessel. The gas stream exiting from the condensation and collection vessel is further cleaned and additional ammonium chloride is removed by passing through additional filters.},
doi = {},
url = {https://www.osti.gov/biblio/862892}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

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