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Title: Continuous-flow free acid monitoring method and system

Abstract

A free acid monitoring method and apparatus is provided for continuously measuring the excess acid present in a process stream. The disclosed monitoring system and method is based on the relationship of the partial pressure ratio of water and acid in equilibrium with an acid solution at constant temperature. A portion of the process stream is pumped into and flows through the monitor under the influence of gravity and back to the process stream. A continuous flowing sample is vaporized at a constant temperature and the vapor is subsequently condensed. Conductivity measurements of the condensate produces a nonlinear response function from which the free acid molarity of the sample process stream is determined.

Inventors:
;
Issue Date:
OSTI Identifier:
5153314
Assignee:
Dept. of Energy
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; INORGANIC ACIDS; MONITORING; ON-LINE MEASUREMENT SYSTEMS; PROCESS SOLUTIONS; ACIDIFICATION; ELECTRIC CONDUCTIVITY; EVAPORATORS; MEDIUM TEMPERATURE; NITRIC ACID; REFRACTIVITY; REPROCESSING; SPENT FUELS; TITRATION; VAPOR CONDENSATION; VAPOR PRESSURE; WATER; DISPERSIONS; ELECTRICAL PROPERTIES; ENERGY SOURCES; FUELS; HYDROGEN COMPOUNDS; MATERIALS; MIXTURES; NUCLEAR FUELS; ON-LINE SYSTEMS; OPTICAL PROPERTIES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; REACTOR MATERIALS; SEPARATION PROCESSES; SOLUTIONS; THERMODYNAMIC PROPERTIES; 050800* - Nuclear Fuels- Spent Fuels Reprocessing

Citation Formats

Strain, J E, and Ross, H H. Continuous-flow free acid monitoring method and system. United States: N. p., 1980. Web.
Strain, J E, & Ross, H H. Continuous-flow free acid monitoring method and system. United States.
Strain, J E, and Ross, H H. Fri . "Continuous-flow free acid monitoring method and system". United States.
@article{osti_5153314,
title = {Continuous-flow free acid monitoring method and system},
author = {Strain, J E and Ross, H H},
abstractNote = {A free acid monitoring method and apparatus is provided for continuously measuring the excess acid present in a process stream. The disclosed monitoring system and method is based on the relationship of the partial pressure ratio of water and acid in equilibrium with an acid solution at constant temperature. A portion of the process stream is pumped into and flows through the monitor under the influence of gravity and back to the process stream. A continuous flowing sample is vaporized at a constant temperature and the vapor is subsequently condensed. Conductivity measurements of the condensate produces a nonlinear response function from which the free acid molarity of the sample process stream is determined.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}