Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps that includes new technologies, particularly 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 well being and safety standards via full fluid containment. – Image: HMD Kontro
Hydrofluoric acid alkylation is a chemical/hydrocarbon processing application which poses specific challenges to process operators, together with the risks related to the dealing with of a deadly, extremely corrosive fluid which poses a possible hazard to plant equipment, the people who work on website and the wider setting ought to leaks happen.
The process
HF Alkylation combines olefins (primarily a mix of propylene and butylene) with isobutene in the presence of a hydrofluoric acid catalyst to supply alkylate. A high-octane additive, alkylate is a critical security part that offsets the high vapour stress of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline provides. The continuous tightening of clean fuels’ legislation has increased the demand for alkylate, which can be responsible for the anti-knocking property of unleaded petrol/gasoline in fashionable vehicles.
Potential dangers
The HF alkylation course of poses numerous serious environmental and health and safety dangers if poorly managed, with the potential for acid runaway, accelerated equipment corrosion and associated HF launch. HF acid by its nature seeks out and assaults imperfections in forged metal parts that will finally scale back the life of pumps, valves and different tools and worse nonetheless, end in product leakage. Failure-prone mechanical seals can leak harmful course of fluids. The aggressive and damaging nature of HF acid locations nice importance on the selection of fabric of forged elements, notably in terms of the pump casing and impeller.
Designed for resistance towards extremely corrosive fluids corresponding to HF acids, magnetic drive sealless pumps offer whole containment with built-in reliability. Magnetic drive sealless pumps featuring 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.
Magnetic drive sealless pumps featuring new applied sciences have been particularly 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 result of close collaboration between UOP Honeywell, the main licensor of HF alkylation technology and HMD Kontro, and utilizing an innovative growth course of, the HMD Kontro HF pump features 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).
Specialist design options
Built into the design of these next generation pumps are options which meet operator-specific wants for the HF alkylation course of. เครื่องมือที่ใช้วัดความดันคือ include a pump casing in Alloy C22 supplies, which has been proven to supply the necessary resistance to corrosion and in addition meets NDE necessities for HF acid. In addition, the pump’s secondary containment system is rated to forty bar (580 psi), eliminating the potential of leakage into the setting, and decreasing operational dangers and the related costs to fulfill stringent environmental and health and security objectives. Finally, there could be continuous monitoring to ensure a dependable sealless pump efficiency which incorporates leak detection instrumentation and protection towards dry pump operating (power control monitor).
With no seals to leak, no seal buffer methods to help and keep and no supporting systems, the most recent magnetic drive sealless pump technology presents significant safety, value and operational advantages. Lower end-user set up prices and simplified maintenance requirements, make it an effective whole-life proposition compared to typical mechanically sealed pumps.

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