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 health and security requirements through complete fluid containment. – Image: HMD Kontro
Hydrofluoric acid alkylation is a chemical/hydrocarbon processing application which poses specific challenges to course of operators, together with the dangers associated with the handling of a lethal, extremely corrosive fluid which poses a possible hazard to plant gear, the individuals who work on site and the wider surroundings ought to leaks occur.
The course of
HF Alkylation combines olefins (primarily a mixture of propylene and butylene) with isobutene within the presence of a hydrofluoric acid catalyst to produce alkylate. A high-octane additive, alkylate is a crucial security component that offsets the excessive vapour pressure of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline provides. The continuous tightening of clean fuels’ laws has increased the demand for alkylate, which is also liable for the anti-knocking property of unleaded petrol/gasoline in modern vehicles.
Potential dangers
The HF alkylation process poses a selection of severe environmental and well being and security dangers if poorly managed, with the potential for acid runaway, accelerated equipment corrosion and related HF launch. HF acid by its nature seeks out and attacks imperfections in cast metallic parts that will finally scale back the life of pumps, valves and other tools and worse nonetheless, end in product leakage. Failure-prone mechanical seals can leak dangerous course of fluids. The aggressive and damaging nature of HF acid places great importance on the choice of material of cast components, notably by way of the pump casing and impeller.
Designed for Last chance towards extremely corrosive fluids corresponding to HF acids, magnetic drive sealless pumps provide whole containment with built-in reliability. Replicate featuring new applied sciences have been particularly designed to be used in hydrofluoric acid alkylation items and had been developed in response to the challenges of dealing with HF acid.
Magnetic drive sealless pumps that includes new applied sciences have been particularly designed to be used in hydrofluoric acid alkylation units and have been developed in response to the challenges of handling HF acid. – Image: HMD Kontro
HMD Kontro HF pump
The result of close collaboration between UOP Honeywell, the leading licensor of HF alkylation know-how and HMD Kontro, and utilizing an progressive development course of, the HMD Kontro HF pump contains a excessive integrity pump casing manufactured from Alloy C22 (ASTM A194 Gr. CX2MW) which has been tested using new strategies of Non-Destructive Examination (NDE).
Specialist design options
Built into the design of these next technology pumps are features which meet operator-specific wants for the HF alkylation course of. They include a pump casing in Alloy C22 materials, which has been confirmed to supply the necessary resistance to corrosion and likewise 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 surroundings, and decreasing operational dangers and the associated prices to fulfill stringent environmental and health and safety targets. Finally, there’s continuous monitoring to make sure a reliable sealless pump performance which includes leak detection instrumentation and safety against dry pump running (power control monitor).
With no seals to leak, no seal buffer methods to support and preserve and no supporting methods, the newest magnetic drive sealless pump technology presents vital security, cost and operational benefits. Lower end-user installation costs and simplified upkeep requirements, make it an efficient whole-life proposition compared to standard mechanically sealed pumps.
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