Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps featuring new technologies, particularly designed to be used 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 safety standards by way of full fluid containment. – Image: HMD Kontro
Hydrofluoric acid alkylation is a chemical/hydrocarbon processing software which poses specific challenges to course of operators, including the dangers related to the dealing with of a deadly, extremely corrosive fluid which poses a possible hazard to plant tools, the individuals who work on web site and the wider environment should leaks occur.
The course of
HF Alkylation combines olefins (primarily a combination of propylene and butylene) with isobutene within the presence of a hydrofluoric acid catalyst to supply alkylate. A high-octane additive, alkylate is a important safety 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 increased the demand for alkylate, which can also be liable for the anti-knocking property of unleaded petrol/gasoline in modern automobiles.
Potential dangers
The HF alkylation course of poses a variety of critical environmental and well being and safety dangers if poorly managed, with the potential for acid runaway, accelerated tools corrosion and associated HF release. HF acid by its nature seeks out and attacks imperfections in cast metal elements that can ultimately cut back the lifetime of pumps, valves and other gear and worse nonetheless, result in product leakage. Failure-prone mechanical seals can leak dangerous course of fluids. The aggressive and damaging nature of HF acid places great significance on the choice of material of solid elements, notably by way of the pump casing and impeller.
Designed for resistance towards extremely corrosive fluids corresponding 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 particularly designed for use in hydrofluoric acid alkylation units and were developed in response to the challenges of handling HF acid.
Magnetic drive sealless pumps featuring new technologies have been particularly designed for use 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 results of shut collaboration between UOP Honeywell, the leading licensor of HF alkylation know-how 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 tested utilizing new methods of Non-Destructive Examination (NDE).
Specialist design features
Built into the design of those next generation pumps are features which meet operator-specific needs for the HF alkylation process. Discount include a pump casing in Alloy C22 materials, which has been proven to supply the necessary 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 environment, and reducing operational risks and the related costs to satisfy stringent environmental and health and security targets. Finally, there is continuous monitoring to make sure a reliable sealless pump performance which includes leak detection instrumentation and safety against dry pump operating (power management monitor).
With no seals to leak, no seal buffer systems to assist and keep and no supporting systems, the most recent magnetic drive sealless pump know-how provides vital safety, price and operational benefits. Lower end-user set up costs and simplified upkeep requirements, make it an efficient whole-life proposition in comparison with standard mechanically sealed pumps.

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