Introduction
A special pickling acid regeneration system is the natural completion to a full hot dip galvanizing plant. Thanks to the use of regeneration systems we can positively impact the environment while elevating the production performance in the plant.
Great savings in disposal costs are the main advantage of installing an acid regeneration system in the plant. Any modern hot dip galvanizing installation should include this specific system, which saves money and improves surface quality. In addition, the great reduction in environmental impact can help the galvanizer in gaining important credits for specific public or private tenders where sustainability is a plus.
Introduction:
a). Principle of waste acid regeneration unit:
Distillation, separation and crystallization of ferrous chloride in waste acid through distillation process.
b) This waste acid regeneration unit composition:
graphite evaporator, graphite condenser, preheater, graphite crystallizer, crystal and liquid separator.
c) Process flow:
The raw material liquid is first preheated to 80ºC through the preheating condenser, and then enters the heater, heated and evaporated, and then enters the gas-liquid separator for separation. Use the circulation pump for forced circulation, to increase the concentration of the concentrated liquid to 60% through the liquid level difference and temperature, put the material into the crystallizer, use circulating water for cooling, and then put it in the separator to separate the mother liquor from the crystals, and return the mother liquor to the evaporator for secondary distillation , collect the crystal for sale.
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