Patent
1973-05-22
1978-02-14
Behrend, Harvey E.
176 22, 176 37, G21C 700
Patent
active
040736830
ABSTRACT:
Two sets of ion exchangers or other means which are capable of reversibly storing borate ions are continuously or semi-continuously utilized to provide a nuclear reactor with a supply of both a highly concentrated boric acid solution and a solution having a very low concentration of boron. The process is essentially a timed-two-cycle flow scheme. During the first cycle, fluid is sent from a high concentration storage tank via a cooler and a first set of ion exchanger to a low concentration storage tank while simultaneously sending fluid from a low concentration storage tank via a heater and a second set of ion exchanger to the high concentration storage tank. During the second cycle, the flow through the ion exchangers is reversed such that the flow from the high concentration storage tank which has been cooled is sent to the low concentration storage tank via the second set of ion exchangers, and the flow from the low concentration storage tank which has been heated is sent to the high concentration storage tank via the first set of heat exchangers. The two-cycle flow scheme is repeated continuously or as often as necessary to obtain the proper concentration in the two storage tanks.
REFERENCES:
patent: 3365367 (1968-01-01), Dolle
patent: 3378450 (1968-04-01), Gramer et al.
patent: 3380889 (1968-04-01), Loose
patent: 3666626 (1972-05-01), Gramer et al.
Behrend Harvey E.
Campbell J. R.
Dermer Z. L.
Westinghouse Electric Corporation
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