The HEIL Series 730 Vertical Countercurrent Scrubber is designed specifically for the efficient removal of corrosive, noxious and/or nuisance gases from process or ventilation air streams.
The air stream entering the scrubber is first contacted by the scrubbing solution as it drains from the packed bed to the integral sump below. A spray header located above the packing properly distributes the scrubbing solution across the top of the packing.
The air stream then moves upward through the packed bed in a countercurrent to the downward flowing liquid. Traveling a tortuous route through the packing extends the contact time between the air and the liquid and increases the intimacy of gas/liquid contact.
The gas then passes through the liquid spray above the packing. Before leaving the scrubber, the scrubbed air passes through a mist eliminator (HEILex EB 4-Bend Mist Eliminator Blades or mesh pad) to remove entrained droplets.
The type of gas and the desired removal efficiency determines the bed depth, packing size, irrigation rate and chemical requirement.
HEIL Series 730 Vertical Countercurrent Scrubbers are suited for a wide variety of applications in industries such as chemical, pulp and paper, steel and metal finishing, fertilizer and pharmaceuticals. The Series 730 Vertical Countercurrent Scrubber has also been used successfully for the control of odors generated in water and wastewater treatment, laboratory exhausts, heat transfer and air stripping/degasifying.
The Series 730 Vertical Countercurrent Scrubber is effective for the removal of corrosive and or noxious fumes and mists (5-7 microns and larger) from a gas stream.
High Efficiency Proper sizing of the unit, choose packing and packing depth, irrigation rate and chemical feed can result in efficiencies of 99% or better. Standard units contain 2, 5.5 or 10 feet of packing. Units are custom designed to the specific requirements of each individual application.
Low Operating Cost The static pressure drop at the rated capacity is less than a 4 inch water column for the standard 5.5 feet bed depth. In addition, scrubbing solutions can be recirculated using the integral pump. This reduces fresh water consumption and eliminates the need for extra tankage for the scrubber solution.
Versatility The Series 730 Vertical Countercurrent Scrubber is designed to handle a wide variety of applications, from removal of acid gases to degasifying a contaminated liquid. Units can be staged in a series to achieve maximum efficiencies even on the most difficult applications.
Extended Service Life The Series 730 Vertical Countercurrent Scrubber has been designed with maximum corrosion resistance as a primary consideration. The wide selection of corrosion resistant materials feature rigidon FRP (fiberglass reinforced plastic) as a standard material with thermoplastic, dual laminate (thermoplastic with FRP overlay), stainless steel and other alloy constructions are available.
Key factors for selecting the right countercurrent scrubber for a given application are the gas volume needing to be ventilated, type of contaminant(s) present, quantity of contaminant present, and the required removal efficiency.
Before providing a quote, HEIL engineers assist with the selection of a countercurrent model, as well as sizing and selection of accessory items, such as pumps, fans, and chemical feed systems to make a complete scrubber system.
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