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Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps featuring new technologies, particularly 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 well being and safety requirements through complete fluid containment. – Image: HMD Kontro

Hydrofluoric acid alkylation is a chemical/hydrocarbon processing application which poses specific challenges to course of operators, including the risks associated with the dealing with of a lethal, extremely corrosive fluid which poses a possible hazard to plant tools, the individuals who work on web site and the broader setting ought to leaks occur.
The process

HF Alkylation combines olefins (primarily a mixture of propylene and butylene) with isobutene within the presence of a hydrofluoric acid catalyst to produce alkylate. A high-octane additive, alkylate is a critical safety component that offsets the high vapour strain of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline supplies. The continual tightening of unpolluted fuels’ legislation has increased the demand for alkylate, which is also answerable for the anti-knocking property of unleaded petrol/gasoline in fashionable automobiles.
Potential dangers

The HF alkylation process poses a quantity of critical environmental and well being and safety risks if poorly managed, with the potential for acid runaway, accelerated gear corrosion and related HF release. HF acid by its nature seeks out and attacks imperfections in cast metal elements that can finally reduce the lifetime of pumps, valves and other tools and worse nonetheless, end in product leakage. Failure-prone mechanical seals can leak harmful process fluids. The aggressive and damaging nature of HF acid places great importance on the choice of fabric of cast parts, notably when it comes to 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 particularly designed to be used in hydrofluoric acid alkylation items and were developed in response to the challenges of handling HF acid.
Magnetic drive sealless pumps that includes new applied sciences have been specifically designed for use in hydrofluoric acid alkylation models and were developed in response to the challenges of dealing with HF acid. – Image: HMD Kontro

HMD Kontro HF pump

The results of close collaboration between UOP Honeywell, the leading licensor of HF alkylation technology and HMD Kontro, and using an progressive development process, the HMD Kontro HF pump contains a high integrity pump casing manufactured from Alloy C22 (ASTM A194 Gr. CX2MW) which has been examined using new methods of Non-Destructive Examination (NDE).
Specialist design features

Built into the design of these subsequent technology pumps are features which meet operator-specific needs for the HF alkylation process. They embrace a pump casing in Alloy C22 materials, which has been confirmed to offer the mandatory resistance to corrosion and also meets NDE necessities 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 surroundings, and lowering operational risks and the related costs to meet stringent environmental and health and safety objectives. Finally, there is continuous monitoring to make sure a reliable sealless pump efficiency which includes leak detection instrumentation and protection towards dry pump working (power management monitor).
With digital pressure gauge to leak, no seal buffer techniques to help and maintain and no supporting systems, the latest magnetic drive sealless pump technology presents vital security, value and operational benefits. Lower end-user set up prices and simplified upkeep requirements, make it an efficient whole-life proposition in comparison with typical mechanically sealed pumps.
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