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Byproduct Recovery
Our HARDTAC process is able to treat spent KOH from HF alkylation processes that use KOH as the neutralizing agent, producing:
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• "Regenerated" KOH that may be internally recycled back to the refinery
• Calcium fluoride that may be recycled in an external market
• Regenerated KOH with minimal water dilution |
Key aspects of HARDTAC for HF Alkylation spent caustic treatment:
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• The fluoride concentration in the regenerated KOH is reduced to about 5,000 to 10,000 mg/L (depending on the KOH concentration).
• Reagent usage is typically about 15 to 100 percent less than comparable, conventional precipitation technologies, significantly reducing the reagent cost.
• Any level of automation can be incorporated to meet your needs. Typically, we provide HARDTAC on a service contract basis whereby the entire operation is fully automated and operates independently of the HF Alkylation unit controls.
• Regeneration of the KOH drastically reduces the amount of fresh KOH that must be purchased, thereby saving the refinery significantly in operating costs. |
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