CN CN120888980A
The invention discloses a pure water supply pipeline system for producing hydrogen by electrolyzing water. A heat exchange pipeline is arranged in the pure water supply pipeline system, and the heat exchange pipeline is used for carrying out heat exchange on a water body before flowing through a make-up pump (72) and a water body after flowing through the make-up pump; the heat exchange pipeline comprises a cooling water supply source (3), a first heat exchanger (81) and a second heat exchanger (82); the first heat exchanger is arranged between a pipeline at a water outlet pipe orifice of the pure water storage tank (1) and a cooling water circulation pipeline, and the second heat exchanger is arranged between a pipeline for communicating a main port of a second three-way valve (92) to a deionizer (4) and the cooling water circulation pipeline; water flow in the cooling water circulation pipeline passes through the second heat exchanger and then passes through the first heat exchanger after being supplied by the cooling water supply source. The heat exchange pipeline arranged in the pure water supply pipeline system helps to cool high-temperature pure water, and meanwhile, heat is transferred to preheat normal-temperature pure water, so that waste heat is secondarily utilized.
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