Chlorine dioxide generating system

Details Chlorine dioxide generating system Chlorine dioxide generating system

1979-06-14

1981-02-10

Richman, Barry

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Control element is fluid pressure sensitive

210754, 422113, 422114, 422117, 422129, 423477, G05B 900, F16K 3112, G05D 700, C01B 1102

Patent

active

042501440

ABSTRACT:
A system for generating chlorine dioxide for use as a disinfectant in water or wastewater treatment, the system output including a percentage of chlorine at an acceptably low level, thereby avoiding the deleterious effect of chlorine in the disinfection process. The system is provided with a source of chlorine gas and a source of aqueous sodium chlorite, both of which are fed into a reactor to generate chloride dioxide therein. The output of the reactor is coupled to an ejector operated by a water stream to create a vacuum which draws chlorine dioxide from the reactor into the ejector to dilute the chlorine dioxide before it is supplied to a process being treated. The resultant negative pressure in the reactor acts to draw the chlorine gas therein from the source through a vacuum regulator which maintains the flow of chlorine gas into the reactor at a constant rate and acts to cut off the supply of chlorine in the absence of negative pressure.

REFERENCES:
patent: 2745714 (1956-05-01), Woodward
patent: 3322497 (1967-05-01), Martin
patent: 3627275 (1971-12-01), Gusmer
patent: 3864456 (1975-02-01), Winfield et al.
patent: 3975284 (1976-08-01), Lambert
patent: 4013761 (1977-03-01), Ward
patent: 4041981 (1977-08-01), Davis et al.
patent: 4143115 (1979-03-01), Ward

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