An illustration of a water wash injection spray lance in a Petrochemical Process

Water is injected into process lines in the refining, petrochemical, power generation, and chemical industries to wash contaminants from gas streams and piping components. This water wash process is important in refining crude oil into its component fractions. Initially, water is injected to remove salts and halides from the crude oil through precipitation before they can corrode and degrade the refining system itself. Later in refining, water wash injection nozzles spray into the hydrocarbon streams to clean residual solid particles.

BETE spray nozzles are designed to maximize efficiency in wash water injection applications as they atomize and distribute the water into the process stream or vessel, increasing the water’s coverage and reaction surface area. Spray nozzles coupled with BETE injection lances can distribute the water evenly along the centerline or desired areas of process streams or vessels.

Petrochemical Processing Brochure PDF

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Important factors to consider:

Process pipe/vessel size, velocity, pressure, temperature, and fluid composition

Available installation ports and required clearance diameters

  • In general process piping applications, a minimum of 3-5 pipe diameters of straight length upstream and 5-10 pipe diameters of straight length downstream are recommended to ensure spray dispersion

Required materials of construction for corrosive environments

Ease of maintenance/replacement

  • Retractable lances allow for quill/lance removal while leaving the process online

Required/available wash water flow rate

Available pressure drop (∆P) across the nozzle

  • ∆P = supply pressure at nozzle inlet -process pressure outsidenozzle

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