Olin Corporation

Kenneth E Gasper

William J Ward

Philip A Vella

Raymond G Ehrhart

A process and apparatus for producing an aqueous solution of chlorine dioxide and chlorine wherein the likelihood of autodecomposition of chlorine dioxide is significantly reduced or practically eliminated and, in the unlikely event that such CLO.sub.2 autodecomposition occurs, it is quickly detected and the process is automatically corrected.

Process and apparatus for producing an aqueous solution containing

A drum dehumidifying breather for a liquid chemical container including a desiccant cannister having a top wall, a cylindrical transparent side wall, and a removable bottom wall;

Chemical drum dehumidifying breather

A boiler blowdown monitoring system wherein the conductivity of the water in the boiler blowdown line is monitored to determine if it exceeds either a preset maximum or minimum level. The system includes a blowdown sensor, a blowdown valve, a blowdown controller and an interrogation means. The water conductivity is sensed by the sensor located on the blowdown line and transmitted to the interrogation means (e.g. microprocessor) through the boiler blowdown controller. If the sensor senses a water conductivity level above a preselected maximum conductivity level or below a preselected minimum conductivity level after a predetermined time period has passed since the boiler blowdown valve was opened, then an alarm signal is sent to the boiler operator.

Boiler blowdown monitoring system and process for practicing same

A chemical process monitoring system wherein both a chemical process parameter control means (e.g. standard water treatment controller) and the means for adjusting the controlled process parameter (e.g. chemical feed pump) are simultaneously monitored through an interrogation means (e.g. microprocessor to determine if the adjusting means is successfully responding to the control means; and, if not, an alarm signal is generated to the operator.

Chemical process monitor

Disclosed is a positive displacement pump output monitor which is employed by (a) passing the discharged fluid from said pump through a pulse receiving chamber, the pressure of said pumped fluid during the discharge stroke of the pump causing a diaphragm in said pulse receiving chamber to be moved outwardly by said fluid; (b) causing the outward concurrent movement of a spring-loaded metal shaft when the diaphragm is moved outwardly; (c) contacting a fixed element with said outwardly moved spring-loaded shaft, thereby causing a time-delayed relay connected to said fixed element to be reset; and (d) causing said time-delayed relay to send an alarm signal to an alarm annunciation means if said relay is not reset within a predetermined amount of time.

Positive displacement pump output monitor

Described is a mixing apparatus and its use in the hydration of liquid polymers. The apparatus includes two packed mixing columns, each having two reducing couplings attached thereto to form an inlet and an outlet to each column. The outlet of the first mixing column is connected to the inlet of the second mixing column via means of a reducing passageway. The apparatus also has sources of supply for liquid polymer and water connected to the inlet of the first mixing column through metering means and injection check means. The apparatus provides controlled mixing velocity during the hydration with non-shearing agitation and without a chemical buildup.

Liquid polymer hydration

An improved chemical generation apparatus particularly adapted to the generation of chlorine dioxide. This apparatus includes a generation vessel having at least two reducing couplings attached thereto by leak-proof joints thereby forming at least one inlet and at least one outlet to said vessel. The reducing couplings advantageously have surfaces which form an angle of at least 110.degree. with the vessel walls to create a geometry which prevents chemical buildup during operation of the apparatus. The apparatus also has sources of supply for each of the reactive materials connected to said inlet of the vessel though a metering means and an injection check valve.

Chemical generation apparatus

The present invention is directed to a chlorine dioxide generation apparatus and a method of generating chlorine dioxide using the apparatus. The novel apparatus includes a generation vessel having leak-inhibiting solvent weld joints with reducing couplings which form an inlet and outlet. The reducing couplings advantageously have surfaces which form an angle of at least 110.degree. with the vessel walls to create a geometry which prevents chemicals buildup during operation of the apparatus.

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Leawood, KS, United States of America

Kenneth E Gasper