Reactor and heat exchanger system for cyanide waste water treatm

Details Reactor and heat exchanger system for cyanide waste water treatm Reactor and heat exchanger system for cyanide waste water treatm

1988-06-28

1989-10-31

Fisher, Richard V.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Material level or thickness responsive

165 13, 165 66, 210104, 210149, 210181, 210904, 422106, 422110, 422198, B01D 1712

Patent

active

048775193

ABSTRACT:
A waste water treatment system for high temperature hydrolysis of cyanides has a reactor operating at a sufficiently high temperature and pressure to effect hydrolysis of cyanide in the waste waters. A heat exchanger system is provided through which reactor effluent and reactor influent streams flow. The improved waste water treatment system includes a first tube in tube heat exchanger for an influent stream and a second tube in tube heat exchanger for an effluent stream. A heat exchange medium is circulated between the effluent heat exchanger and the influent heat exchanger to cool down the effluent and in turn use the heat to heat up the influent to the reactor. The heat exchangers are arranged such that the influent and effluent streams pass through the tube side of each heat exchanger to minimize clogging of the first and second heat exchangers, while at the same time providing for effective heat exchange in cooling the effluent and heating up the waste waters to be treated.

REFERENCES:
patent: 3592586 (1971-07-01), Scott
patent: 3808126 (1974-04-01), Pradt
patent: 3833056 (1974-09-01), McMinn et al.
patent: 3945919 (1976-03-01), Schindewolf
patent: 4042502 (1977-08-01), Schmidt et al.
patent: 4294706 (1981-10-01), Kakihara et al.
patent: 4402837 (1983-09-01), Okugawa
patent: 4610298 (1986-09-01), Van Schagen et al.
patent: 4651813 (1987-03-01), Witt et al.
patent: 4738302 (1988-04-01), Abma

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