Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps that includes new applied sciences, specifically 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 requirements through complete fluid containment. – Image: HMD Kontro

Hydrofluoric acid alkylation is a chemical/hydrocarbon processing application which poses explicit challenges to process operators, including the risks associated with the dealing with of a lethal, highly corrosive fluid which poses a potential hazard to plant gear, the individuals who work on site and the wider setting ought to leaks occur.
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 important security component that offsets the high vapour strain of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline supplies. The continuous tightening of unpolluted fuels’ legislation has increased the demand for alkylate, which is also liable for the anti-knocking property of unleaded petrol/gasoline in fashionable automobiles.
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 tools corrosion and related HF release. HF acid by its nature seeks out and assaults imperfections in cast metallic elements that can ultimately reduce the life of pumps, valves and different gear and worse still, lead to 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 selection of material of forged components, significantly when it comes to the pump casing and impeller.
Designed for resistance in opposition to highly corrosive fluids similar to HF acids, magnetic drive sealless pumps supply total 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 particularly designed for use in hydrofluoric acid alkylation units and had 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 using an revolutionary growth process, the HMD Kontro HF pump includes a high 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 features

Built into the design of those subsequent generation pumps are options which meet operator-specific needs for the HF alkylation course of. They embody a pump casing in Alloy C22 materials, which has been proven to supply the necessary resistance to corrosion and in addition meets NDE necessities for HF acid. In pressure gauge , the pump’s secondary containment system is rated to forty bar (580 psi), eliminating the potential of leakage into the surroundings, and decreasing operational risks and the related costs to fulfill stringent environmental and well being and safety objectives. Finally, there could be continuous monitoring to ensure a dependable sealless pump performance which incorporates leak detection instrumentation and safety against dry pump running (power control monitor).
With no seals to leak, no seal buffer methods to help and keep and no supporting techniques, the newest magnetic drive sealless pump expertise presents vital safety, value and operational benefits. Lower end-user installation prices and simplified upkeep necessities, make it an effective whole-life proposition in comparability with conventional mechanically sealed pumps.
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