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Streamline phosphoric acid purification and cut CAPEX with our extraction solution

Download our case study to see how OptimEXT™ replaces the traditional three-column process with just two, reducing footprint, simplifying operations, and maintaining high purity performance

Reduced
CAPEX

 Achieve up to 30% savings by consolidating stages into a single extraction column.

Compact and
streamlined design

Combines extraction and washing in one unit to save space and simplify flowsheets.


Reduced
inventory

Smaller total column volume means less solvent hold-up and fewer shutdown losses.

 Download the case study to see how top producers are boost efficiency, and CAPEX  performance in phosphoric acid purification by:

  • Replacing the traditional three-column process with a compact two-column system.
  • Reducing column CAPEX by up to 30%, plus an additional 10% on auxiliaries.
  • Minimizing fouling and extending uptime with Kühni™ internals designed to handle solids.
  • Lowering solvent losses and inventory through a 15–20% reduction in column volume.
  • Cutting plant footprint by up to 30% compared to conventional setups.
  • Adapting to varying feed conditions with high process flexibility.
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How OptimEXT™ helps simplify phosphoric acid purification while cutting cost and footprint.

Sulzer’s OptimEXT™ offers a modern, scalable approach to wet phosphoric acid purification by replacing the traditional three-column process with a compact two-column system based on high-performance Kühni™ technology. The result is fewer process steps, less solvent inventory, and a smaller overall plant footprint.

With successful installations worldwide and decades of experience, OptimEXT™ delivers reliable operation even under challenging feed conditions—helping producers meet purity targets, reduce solvent inventory, and optimize plant design.

Looking to reduce CAPEX or improve purification efficiency in phosphoric acid processing? Contact our team at optimext@sulzer.com to discuss your application.

Guaranteed performance with confidence

Our ability to offer performance guarantees stems from Sulzer’s comprehensive pilot testing capabilities, deep application know-how, and robust process validation. Before implementation, we simulate and optimize your process under real conditions—ensuring the final solution meets your recovery, selectivity, and capacity targets with minimal scale-up risk.

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Got questions? We have your answers.
How is this different from traditional phosphoric acid extraction setups?
Traditional systems use three separate columns for extraction, scrubbing, and stripping. OptimEXT™ combines them into just two, reducing equipment needs and plant footprint.
Can this handle variable feed conditions or impurities?
Yes. OptimEXT™ uses Kühni™ internals that adjust to changing feed compositions without compromising separation performance.
Is this proven in real-world phosphoric acid plants?
Yes. OptimEXT™ has been successfully deployed worldwide, backed by Sulzer’s pilot testing and extensive process experience.
What kind of support does Sulzer provide?
Sulzer supports your project from lab testing to startup, including solvent selection, piloting, scale-up, and on-site implementation.
Can I reduce solvent losses and inventory?
Yes. OptimEXT™ reduces total column volume by 15–20 percent, lowering material hold-up and minimizing losses during shutdowns.