Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps that includes new technologies, specifically designed for use in Hydrofluoric Acid (HF) Alkylation, have been developed in response to the challenges of handling HF acid.
The new HMD Kontro sealless pump ensures conformity with all environmental health and safety standards via complete fluid containment. – Image: HMD Kontro
Hydrofluoric acid alkylation is a chemical/hydrocarbon processing application which poses particular challenges to course of operators, together with the risks associated with the handling of a deadly, extremely corrosive fluid which poses a possible hazard to plant gear, the individuals who work on site and the wider environment ought to leaks occur.
The process
HF Alkylation combines olefins (primarily a mix of propylene and butylene) with isobutene within the presence of a hydrofluoric acid catalyst to provide alkylate. A high-octane additive, alkylate is a crucial safety part that offsets the excessive vapour strain of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline provides. The continual tightening of fresh fuels’ legislation has increased the demand for alkylate, which can also be liable for the anti-knocking property of unleaded petrol/gasoline in fashionable automobiles.
Potential dangers
The HF alkylation process poses a selection of critical environmental and health and security risks if poorly managed, with the potential for acid runaway, accelerated equipment corrosion and associated HF launch. HF acid by its nature seeks out and attacks imperfections in cast metal parts that can finally cut back the lifetime of pumps, valves and different equipment and worse nonetheless, result in product leakage. Failure-prone mechanical seals can leak harmful course of fluids. The aggressive and damaging nature of HF acid places nice significance on the choice of fabric of cast components, significantly by way of the pump casing and impeller.
Designed for resistance in opposition to highly corrosive fluids corresponding to HF acids, magnetic drive sealless pumps provide total containment with built-in reliability. Magnetic drive sealless pumps that includes new applied sciences have been specifically designed to be used in hydrofluoric acid alkylation models and have been developed in response to the challenges of dealing with HF acid.
Magnetic drive sealless pumps featuring new technologies have been specifically designed to be used in hydrofluoric acid alkylation items and were developed in response to the challenges of dealing with HF acid. – Image: HMD Kontro
HMD Kontro HF pump
The result of close collaboration between UOP Honeywell, the leading licensor of HF alkylation know-how and HMD Kontro, and utilizing an progressive improvement course of, the HMD Kontro HF pump includes a high integrity pump casing manufactured from Alloy C22 (ASTM A194 Gr. CX2MW) which has been tested using new methods of Non-Destructive Examination (NDE).
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Built into the design of those subsequent generation pumps are options which meet operator-specific needs for the HF alkylation course of. They include a pump casing in Alloy C22 materials, which has been confirmed to supply the mandatory resistance to corrosion and also meets NDE requirements for HF acid. In addition, the pump’s secondary containment system is rated to forty bar (580 psi), eliminating the potential for leakage into the environment, and decreasing operational risks and the associated prices to fulfill stringent environmental and well being and safety goals. Finally, there is continuous monitoring to make sure a reliable sealless pump efficiency which incorporates leak detection instrumentation and protection against dry pump running (power management monitor).
With no seals to leak, no seal buffer systems to assist and keep and no supporting methods, the newest magnetic drive sealless pump know-how offers significant security, value and operational advantages. Lower end-user set up costs and simplified upkeep requirements, make it an effective whole-life proposition in comparison with standard mechanically sealed pumps.
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