Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps that includes new applied sciences, specifically designed to be used 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 security standards via complete fluid containment. – Image: HMD Kontro
Hydrofluoric acid alkylation is a chemical/hydrocarbon processing utility which poses explicit challenges to process operators, together with the risks related to the handling of a deadly, highly corrosive fluid which poses a potential hazard to plant gear, the people who work on website and the wider surroundings ought to leaks happen.
The course of
HF Alkylation combines olefins (primarily a combination of propylene and butylene) with isobutene in the presence of a hydrofluoric acid catalyst to provide alkylate. A high-octane additive, alkylate is a critical security element that offsets the high vapour pressure of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline supplies. The continual tightening of clean fuels’ laws has elevated the demand for alkylate, which can be liable for the anti-knocking property of unleaded petrol/gasoline in modern automobiles.
Potential dangers
The HF alkylation course of poses a number of serious environmental and well being and safety risks if poorly managed, with the potential for acid runaway, accelerated equipment corrosion and related HF launch. HF acid by its nature seeks out and assaults imperfections in cast steel elements that can ultimately scale back the lifetime of pumps, valves and different equipment and worse nonetheless, result in product leakage. Failure-prone mechanical seals can leak harmful process fluids. The aggressive and damaging nature of HF acid locations nice significance on the selection of material of forged elements, notably when it comes to the pump casing and impeller.
Designed for resistance towards extremely corrosive fluids similar to HF acids, magnetic drive sealless pumps provide whole containment with built-in reliability. 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 handling HF acid.
Magnetic drive sealless pumps that includes new technologies have been specifically designed for use in hydrofluoric acid alkylation units and have been 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 expertise and HMD Kontro, and using an innovative development process, the HMD Kontro HF pump includes 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 next technology pumps are features which meet operator-specific wants for the HF alkylation course of. They embody a pump casing in Alloy C22 materials, which has been proven to offer the required resistance to corrosion and likewise meets NDE necessities for HF acid. In addition, the pump’s secondary containment system is rated to 40 bar (580 psi), eliminating the potential for leakage into the environment, and reducing operational risks and the associated costs to satisfy stringent environmental and health and safety targets. Finally, there’ Prize monitoring to make sure a reliable sealless pump efficiency which incorporates leak detection instrumentation and safety towards dry pump running (power control monitor).
With no seals to leak, no seal buffer systems to support and maintain and no supporting techniques, the most recent magnetic drive sealless pump technology offers important security, price and operational advantages. Lower end-user installation prices and simplified maintenance requirements, make it an efficient whole-life proposition compared to typical mechanically sealed pumps.
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