Brooks Instrument offers vaporisers for liquid-to-vapour applications

Published: 13-Jul-2009

The latest high-performance direct liquid injection (DLI) vaporisers from Brooks Instrument use heated gas, rather than a hot metal surface, to achieve liquid vaporisation. A carrier gas stream atomises liquid as it enters the heated gas chamber. Once the atomised liquid contacts the hot gas, it immediately changes to chemically pure vapour, which the US provider of flow controllers says is free of decomposition byproducts or liquid carry-over. The vaporisers can also accept multiple liquid inlets and generate perfectly mixed vapours.

‘Working with key customers in the semiconductor, solar, fuel cell, glass coating, r&d and other markets, we’ve applied our application knowledge to develop the DLI vaporiser,’ said Ed Fisher, solutions manager at Brooks Instrument.

‘Each is easily customisable and overcomes the operational limitations of conventional vaporising technologies such as bubblers or vapour draw systems and flash vaporisers. Additionally, none of the conventional vaporiser technologies can eliminate the potential for liquid carry-over and its attendant problems like a DLI vaporiser.’

Brooks offers vaporiser designs to accommodate a wide range of liquid properties: low vapour pressures (sub 1 torr), low flow rates (sub 5g per hour), and high flow rates (more than 15kg/hr). Unlike bubblers and hot-surface vaporisers, the company says the DLI vaporisers are very efficient at producing vapour from liquid. www.BrooksInstrument.com

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