Mixed acid treatment method using hydrofluoric acid and hydrochloric acid
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The mixed acid contains 36% hydrofluoric acid and 2% hydrochloric acid. Question: 1. Can hydrochloric acid be separated from mixed acid? Is it uneconomical to use hydrochloric acid and hydrofluoric acid in conjunction due to their azeotropy? 2. If mixed acid is used as a raw material for further processing, what products would be suitable to produce?
Hydrochloric acid can be separated out; distillation under azeotropic conditions results in reasonable costs, though the investment required is high, unless high-purity hydrofluoric acid is to be produced.
Could you explain the manufacturing process in more detail? What are the main types of equipment?
Is it hydrated? It’s more troublesome if it contains water
Is electrolytic separation and purification possible? What are the operating costs?
Is this mixed acid waste liquid? We possess technology for processing mixed solutions of hydrofluoric acid and hydrochloric acid. This mixed acid can be used as a raw material, and the fluorine contained in it can be converted into fluorspar products. The particle size of these fluorspar particles is over several dozen micrometers, making separation very easy; moreover, the fluorspar products obtained after separation have a very low moisture content.
It’s waste liquid; can it be treated if the mixed acid also contains sulfuric acid?
Sulfuric acid has little effect. Is the sulfuric acid content high?
Downstream products of fluorine can be produced.