Method of and apparatus for continuous electrochemical metering of substance concentrations in gaseous media,with electrolyte recirculation

Abstract

Abstract METHOD OF AND APPARATUS FOR CONTINUOUS ELECTROCHEMICAL METERING OF CONCENTRATIONS OF OR ANALYZING NOXIOUS SUBSTANCES, SUCH AS SULPHUR DIOXIDE, HYDROGEN SULPHIDE, HALOGENS, OR OZONE, IN GASEOUS MEDIA. AN ELECTROLYTE SOLUTION IS DRAWN FROM A STORAGE TANK AND FORCED SUCCESSIVELY THEOUGH A METERING SYSTEM OF ELECTRODE CELLS WITH AT LEAST ONE INDICATING ELECTRODE AND A REFERENCE ELECTRODE CELL, THE REFERENCE ELECTRODE CELL FORMING THE LAST DOWNSTREAM STAGE OF SAID SYSTEM, WHEREBY HARMFUL PRODUCTS ARISING IN ELECTRODE REACTIONS ARE MADE INEFFECTIVE BY ELECTROCHEMICAL REACTIONS, THE DEGREE OF CONCENTRATION OF SAID PRODUCTS BEING PROPORTIONAL TO THE SUM OF THE CURRENTS FLOWING THROUGH SAID METERING SYSTEM. A MAJOR PORTION OF SAID ELECTROLYTE SOLUTION IS REINTRODUCED INTO THE STORAGE TANK TO BE REPEATEDLY RECIRCULATED; A MINOR POR TION OF SAID ELECTROLYTE SOLUTION IS PASSED THROUGH SAID REFERENCE ELECTRODE CELL. THE SAID ELECTROLYTE SOLUTION IS AN AQUEOUS SOLUTION OF SULPHURIC ACID WHICH IS SATURATED WITH ELEMENTAL IOSINE DURING ITS PASSAGE BETWEEN THE STORAGE TANK AND THE METERING STSTEM.

Inventors

• 👤 J Novak

Bibliographic Details