MATERIALS HANDLING


CHEMICAL PRODUCTION F PUMPS T


heir names sound like sinister creations that would spring from the evil mind of a mad scientist in a futuristic novel or movie: hexafluorochloride, dexamethasone, germanium and cadmium telluride. In reality, they are among the many chemical ingredients that are indispensable foundational components in the manufacture of such commodities as pharmaceuticals, semiconductors and solar panels. Te main concern for the manufacturers of these so-called “high-purity” chemicals is not trying to pronounce their names


40 www.engineerlive.com OR HIGH PURITY


Tom Zuckett introduces the ideal technology for chemical manufacturers who can’t tolerate any deviation from established specifications in their processes


or remembering how to spell them, but ensuring that they are produced in a manner that guarantees the highest level of purity. When these chemicals are not manufactured according to strict specifications for purity, nightmarish scenarios can result that are worthy of a science-fiction novel for both the manufacturer and the end user. Tere is one type of pumping technology – solid-body plastic, air-operated double- diaphragm (AODD) pumps – that possesses the design, construction and operational characteristics that are necessary to


guarantee the high-purity manufacture of chemicals, while also offering the ultimate level of energy efficiency and reliability.


THE CHALLENGE Te universal chemical market consists of thousands of products that are used in hundreds of industries. At the most basic level are the low-grade chemicals that are used in making simple plastics or swimming-pool cleaners and sanitisers. As you move up the chemical food chain, you eventually arrive at the high-purity


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