Hydrogen purification system and water electrolysis hydrogen production system

The utility model relates to a hydrogen purification system and a water electrolysis hydrogen production system, the hydrogen purification system comprises three dryers, the three dryers share one regeneration cycle module, the number of heaters and coolers is remarkably reduced, and therefore the manufacturing cost of the system is low; meanwhile, a first gas-gas heat exchanger is arranged in the regeneration cycle system, so that low-temperature regenerated hydrogen before regeneration and high-temperature regenerated tail gas after regeneration can be subjected to heat exchange, on one hand, waste heat of the high-temperature regenerated tail gas can be fully utilized, and on the other hand, power consumption of a subsequent heater and a regeneration cooler can be remarkably reduced; the system is low in energy consumption. 本公开涉及一种氢气纯化系统和电解水制氢系统，该氢气纯化系统中包括三台干燥器，且三台干燥器共用一个再生循环模块，显著减少了加热器和冷却器的数量，因此，该系统的制造成本较低；同时，再生循环系统中设置有第一气气换热器，使得再生前的低温再生氢气与再生后的高温再生尾气能够进行热量交换，这一方面能够充分利用高温再生尾气的余热，另一方面能够显著减少后续加热器和再生冷却器的功耗，因此