Electrolysis plants for chlorine production

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 7. Electrical equipment of special installations

Electrolysis installations and installations of galvanic coatings. Electrolysis plants for chlorine production

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Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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7.10.46. In installations for the electrolysis of table salt by mercury, membrane and diaphragm methods, as well as in the electrolysis of hydrochloric acid, the following must be provided:

the possibility of emergency manual shutdown of the electrolytic power supply in accordance with 7.10.36, as well as from the control panel room and by the driver of chlorine compressors when they are stopped;
automatic shutdown of the electric motors of chlorine and hydrogen compressors for all electrolysis methods, except for the electric motors of chlorine compressors for the mercury method of electrolysis, in the event of a sudden shutdown of the rectified current supplying the electrolyzers (with a delay of 2-3 s after the current is turned off);
automatic shutdown (with a delay of up to 3 minutes) of the electric motors of chlorine compressors in the mercury electrolysis method with simultaneous activation of the emergency chlorine absorption system;
automatic shutdown by the blocking system with a delay of 3-5 s of the rectifiers supplying the electrolyzers for all electrolysis methods in the event of a sudden stop of all electric motors of chlorine compressors, if self-starting does not occur within the specified period, as well as when a group of electric motors of mercury pumps stops (the number of electric motors in a group is determined in each specific case) with simultaneous activation of the emergency chlorine absorption system from the system and simultaneous signaling to the electrolysis room, compressor room and instrumentation panel;
automatic shutdown of the rectifier of the electrolysis plant when the pressure of chlorine gas in the compressor suction manifold rises above the set limit;
signaling to the electrolysis room, to the room of the instrumentation panel and to the converter substation in case of a sudden shutdown of one of several operating chlorine compressors;
signaling to the electrolysis hall and placement of the instrumentation and control panel when the mercury pump motors stop or the circulation of mercury in electrolyzers with a mercury cathode stops.

7.10.47. In the main production premises, in addition to the general lighting network, a stationary local lighting network with a voltage of up to 50 V, powered from the general lighting network through an isolating transformer, should be provided.

See other articles Section Rules for the installation of electrical installations (PUE).

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