Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps featuring new applied sciences, 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 security standards by way of full fluid containment. – Image: HMD Kontro

Hydrofluoric acid alkylation is a chemical/hydrocarbon processing software which poses particular challenges to process operators, including the dangers associated with the dealing with of a lethal, highly corrosive fluid which poses a potential hazard to plant equipment, the people who work on web site and the broader environment ought to leaks occur.
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HF Alkylation combines olefins (primarily a combination of propylene and butylene) with isobutene in the presence of a hydrofluoric acid catalyst to produce alkylate. A high-octane additive, alkylate is a critical security component that offsets the excessive vapour strain of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline provides. The continuous tightening of unpolluted fuels’ laws has elevated the demand for alkylate, which can be responsible for the anti-knocking property of unleaded petrol/gasoline in trendy autos.
Potential risks

The HF alkylation course of poses a number of severe environmental and well being and security risks if poorly managed, with the potential for acid runaway, accelerated gear corrosion and associated HF release. HF acid by its nature seeks out and assaults imperfections in solid steel components that can ultimately cut back the lifetime of pumps, valves and different equipment and worse nonetheless, lead to product leakage. Failure-prone mechanical seals can leak dangerous process fluids. The aggressive and damaging nature of HF acid locations great importance on the choice of fabric of solid components, significantly in phrases of the pump casing and impeller.
Designed for resistance against 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 technologies 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 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 result of shut collaboration between UOP Honeywell, the main licensor of HF alkylation expertise and HMD Kontro, and using an innovative development course of, the HMD Kontro HF pump includes a excessive 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 subsequent era pumps are options which meet operator-specific wants for the HF alkylation course of. They embrace a pump casing in Alloy C22 supplies, which has been proven to supply the required resistance to corrosion and in addition meets NDE requirements for HF acid. In addition, the pump’s secondary containment system is rated to 40 bar (580 psi), eliminating the possibility of leakage into the surroundings, and lowering operational dangers and the related prices to fulfill stringent environmental and health and security goals. Finally, there’s continuous monitoring to make sure a dependable sealless pump efficiency which includes leak detection instrumentation and protection in opposition to dry pump operating (power control monitor).
With no seals to leak, no seal buffer methods to assist and keep and no supporting systems, the newest magnetic drive sealless pump expertise presents vital safety, price and operational benefits. Lower end-user installation prices and simplified upkeep requirements, make it an efficient whole-life proposition in comparison with typical mechanically sealed pumps.

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