Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps that includes new technologies, particularly designed for use in Hydrofluoric Acid (HF) Alkylation, have been developed in response to the challenges of dealing with HF acid.
The new HMD Kontro sealless pump ensures conformity with all environmental health and security requirements by way of full fluid containment. – Image: HMD Kontro
Hydrofluoric acid alkylation is a chemical/hydrocarbon processing utility which poses explicit challenges to process operators, together with the dangers associated with the handling of a deadly, highly corrosive fluid which poses a possible hazard to plant equipment, the people who work on website and the wider surroundings should 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 supply alkylate. A high-octane additive, alkylate is a critical safety element that offsets the high vapour pressure of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline provides. The continual tightening of fresh fuels’ legislation has elevated the demand for alkylate, which can also be liable for the anti-knocking property of unleaded petrol/gasoline in modern vehicles.
Potential risks
The HF alkylation process poses a number of critical environmental and health and security risks if poorly managed, with the potential for acid runaway, accelerated equipment corrosion and associated HF release. HF acid by its nature seeks out and attacks imperfections in solid steel elements that can finally cut back the life of pumps, valves and other gear and worse nonetheless, end in product leakage. Failure-prone mechanical seals can leak harmful process fluids. The aggressive and damaging nature of HF acid locations great significance on the choice of material of cast parts, particularly by means of the pump casing and impeller.
Designed for resistance towards extremely corrosive fluids similar to HF acids, magnetic drive sealless pumps offer complete containment with built-in reliability. Magnetic drive sealless pumps that includes new applied sciences have been particularly designed for use in hydrofluoric acid alkylation items and had been developed in response to the challenges of dealing with HF acid.
Magnetic drive sealless pumps featuring new applied sciences have been specifically designed to be used in hydrofluoric acid alkylation units and were developed in response to the challenges of handling 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 utilizing an revolutionary improvement course of, the HMD Kontro HF pump includes a excessive 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 options
Built into the design of those subsequent era pumps are options which meet operator-specific needs for the HF alkylation process. They embrace a pump casing in Alloy C22 materials, which has been proven to supply the required resistance to corrosion and in addition meets NDE necessities for HF acid. In Now , the pump’s secondary containment system is rated to forty bar (580 psi), eliminating the potential of leakage into the surroundings, and lowering operational risks and the associated prices to meet stringent environmental and health and security goals. Finally, there’s continuous monitoring to make sure a reliable sealless pump performance which includes leak detection instrumentation and safety towards dry pump working (power control monitor).
With no seals to leak, no seal buffer methods to assist and maintain and no supporting systems, the newest magnetic drive sealless pump know-how presents vital safety, cost and operational advantages. Lower end-user set up prices and simplified maintenance requirements, make it an efficient whole-life proposition in comparability with typical mechanically sealed pumps.
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