Chloride monitoring apparatus
AssigneeW.R. Grace & Co.-Conn.
InventorsPatrick Herman, Jean M. Faure, Philippe Engelberg, Michel Mercusot
Life of this patent
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Abstract
A chloride analyzer includes an inlet valve and filters for process water to be analyzed, as well as a pH electrode to verify the pH value of the incoming liquid before further treatment. A stripper bubbles stripping air through the process water to remove hydrocarbons and hydrogen sulfide therefrom, and the discharge line from said stripper feeds a reaction vessel to which also reagent from a supply vessel is passed. After a suitable reaction time, optionally followed by a further air stripping operation through air supply line, the reaction products are fed via line to an ionometry measuring cell where chloride analysis is carried out using a specific ion selective electrode.
Claims10
Apparatus for analyzing the chloride content of liquid, comprising:
- stripper means to receive said liquid to be analyzed and to strip compounds from the liquid by passing stripping air through the liquid;
- a batch reactor vessel connected to said stripper to receive the stripped liquid and also connected to a supply of a chloride detecting reagent for reaction with said liquid;
- an ionometry measuring cell for measuring the chloride content connected to receive the reaction product from said reaction vessel;
- air propulsion means for propelling the liquid and reagent through the apparatus, thereby avoiding the need for pumps in contact with the liquid being analyzed;
- control means for controlling the charging and discharging of successive batches of liquid in said stripper, the reaction in said reactor vessel, and the ionometry operation in said ionometry cell;
- and including an air supply source adapted to energize pneumatically-driven control valves of the apparatus, and to supply a pressure reduction system to ensure the availability of reduced pressure air for said air propulsion through the apparatus;
- wherein said pressure reduction means includes first and second separate pressure reducers, said first pressure reducer generating a flow of stripping air to be passed through the liquid being prepared for analysis, and said second pressure reducer generating said propulsion air at a pressure above that of the stripping sir but lower than that of the system air used for controlling the valves.
Dependencies are inferred from the claim text.