Magnetic drive pump chemical process project case

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New Chemical Material Integration Project - Magnetic Pump for 1202U Unit

2023-05-15 00:00:00

In order to meet the demand for the production of methyl crosslinking agent and mixed crosslinking agent, the project adopts 78 sets of magnetic drive pumps (including magnetical drive centrifugal pumps, magnetical drive vortex pumps and fluorine-lined magnetic pumps) for conveying highly corrosive, toxic and explosive media (e.g. trichloromethylsilane methyl, ethylene oxide and butanone oxime hydrochloride, etc.).

Project brief

Industry	New chemical materials
Media	Methyltrichlorosilane, hydroxylamine aqueous solution, butanone oxime, liquid alkali, 120# gasoline, ethylene oxide, propylene oxide, etc.
Flow rate	1.2~90 m³/h
Head	10~50 m
NPSHr	1.5 to 4.5 m (customized according to pump model)

Special working conditions, pain points and solutions

Special working conditions	Pain Points	Solutions
High temperature media (some media temperature up to 120℃)	Conventional seals are prone to failure and bearing lubrication is difficult	Internal circulation cooling design + silicon carbide bearings, temperature resistance up to 150°C
Strongly corrosive media (e.g. 32% liquid alkali, hydrogen chloride)	Corrosion of metal parts, short service life	S30408/F46 fluorine lining material + tungsten carbide shaft system (corrosion resistant PV value>3.0MPa-m/s)
Flammable and explosive environment (e.g. 120# gasoline, ethylene oxide)	High risk of leakage and safety hazard	Full magnetic seal-less design + explosion-proof motor (Exd II BT4)
Viscous/solids-containing media (e.g. methyl silicate mixtures)	Conventional pumps are inefficient and prone to clogging	Customized wide flow channel impeller + high head vortex pump design (15% efficiency increase)
Low temperature liquids (e.g. -5°C ethylene oxide)	Material low temperature brittleness risk	Titanium alloy insulation sleeve + jacket insulation design (temperature control accuracy ±1℃)