Series 7000/8000 Gas Atomized Venturi Scrubber

Overview

The extremely efficient gas atomized Series 7000 and 8000 Venturi Scrubbers are the best choice for applications requiring the removal of smaller micron and submicron size particulate down to 0.2 microns and meeting EPA classified PM 10 and PM 2.5 standards. Soluble or chemically reactive gaseous contaminants are easily removed with these highly efficient devices. Both Series 7000 Rectangular and Series 8000 Annular throat units feature Bionomic proprietary Maxi-Impact optimized  long liquid-gas contact throat sections offering reduced pressure drop and superior collection of smaller micron sized particles then conventional venturi, rod deck or cylinder element throat configurations. Throat sections are offered as standard with an adjustment mechanism with manual or automatic actuators for maximum flexibility in meeting the needed operating conditions, collection efficiency and gas volume range. To further the energy savings, Series 7000 and 8000 Venturis include long taper static pressure regain sections to achieve particle growth and droplet agglomeration to reduce fan horsepower.

Choose the Series 7000 Rectangular Venturi for the majority of applications as the most cost effective solution, and the Series 8000 Annular Venturi for troublesome scale forming and surface adhering particulate. Both designs are engineered for rugged simplicity for reduced downtime and maintenance.

 

Series Features

Series 7000 Rectangular Venturi Scrubber

Scrubbing liquid is introduced into the converging section through large fully open pipe distributors.  Specially designed inlet shields ensure even distribution of the liquid eliminating the need for spray nozzles, orifices or other narrow passages that can plug.  Slurries with 10% solids are easily handled with this plug free design.

Standard fixed or optional adjustable area throat assemblies with single or double blade configurations are available.  Choose the fixed type for constant gas volume and pressure drop, and for varying volumes, the adjustable option to maintain a constant pressure drop and collection efficiency. Throat adjustment mechanisms include manual with lever handle or wheel and automatic for differential pressure control signal feedback employing elector-pneumatic actuators.   Adjustable throat designs feature extra-large diameter blade support shaft with heavy duty outboard bearings and protective shaft sleeve eliminating shaft deflection while assuring smooth operation and added protection from corrosion and erosion.

Regain diverging sections are available with a choice of sweep elbow for normal nonabrasive solids handling or flooded type with liquid impaction bottom for abrasive services.

A horizontal version of the series 7000 is also available to meet layout arrangements favoring a lower height inline duct connection.

Series 8000 Aerodynamic Venturi Scrubber

Designed for those services where troublesome slurry liquids or scaling dusts exist, scrubbing liquid is circulated to the scrubber through tangential open pipe headers and spins down the converging section to the throat. Liquid is also fed through a central pipe header to ensure thorough washing of the center cone.This extremely effective washing action permits the recirculation of slurries greater than 20%. 

Any potential buildup of solids on the scrubber interior surfaces is completely eliminated by projecting the gas inlet neck into the scrubber beyond the liquid distributors.

The Series 8000 incorporates our exclusive aerodynamic boat tail cone adjustable throat to generate maximum gas shear of the scrubbing liquid for smaller size droplet production and combined with vortex mixing results in superior collection of particulate at reduced energy requirements. This adjustable cone assembly utilizes a large diameter shaft as the only moving part with protective sleeve to isolate the shaft from the liquid-gas stream designed to withstand the most severe service conditions. Heavy duty intermediate shaft support spiders guide the shaft. Up and down adjustment of the cone is accomplished manually via a screw jack actuator or hydraulic assist, or automatically with a hydraulic cylinder with positioner and feedback loop control from a differential pressure controller analog signal. 

A diverging section for static pressure regain and flooded elbow enables recovery of energy and pre-removal of entrained droplets. 

Entrainment Separators and Further Gas Treatment Components

The Series 7000 and 8000 Venturi scrubbers are complemented with a full line of entrainment separators with volumetric capacities to match all venturi sizes. These entrainment separators are designed to remove the fine liquid droplets generated by the venturi gas induced liquid atomization.

A variety of separator types are available to meet the demands of any application need. Vertical cyclonic with tangential gas inlet standard for low gas turndown applications. When extremely large gas volumes are encountered or large gas turndowns are needed, the optional Bionomic exclusive radial element secondary fine mist removal stage or chevron and filament mist eliminators with radial gas inlets are offered in both horizontal and vertical vessel configurations. For fouling services mist eliminator elements are fitted with wash down cleaning sprays.

When further gas treatment for odor control, gas sub-cooling or absorption is needed, entrainment separators can be fitted with a packed bed stage, tray or patented RotaBed® components to meet the performance requirements. For forced draft high temperature gas applications, separators can include integrally mounted stacks complete with service platforms, access ladders and analytical gas sampling instrumentation.

All separator sizes are available with choice of top central or side tangential gas discharge configurations to meet specific height limitations or layout configurations.

Available Materials of Construction

• Mild Steel, 304, 316, 317L and AL6XN Stainless Steels, Duplex Alloys, High Nickel Alloys, Titanium, Monel, FRP, FRP-Dual Laminate, Silicon Oxide/Carbide lined FRP, All Thermoplastics, Abrasion Resistant Ceramic/Castable and Corrosion Resistant Linings

Capacity Size Range (Gas Handling Capacity)

• 6" thru 100" w.c.

Contaminant Removal Efficiencies

• Particulate Removal: PM 10, PM 2.5 down to 0.2 microns from 90 thru 99.99%
• Water soluble chemical reactive gases up to 95% alone and greater than 99.99% with separator fitted with packing, trays or RotaBed components

Typical Applications

• High efficiency collection in all industry applications of both PM 10 and PM 2.5 particulate and mists from process operations including reactors, dryers, calciners, furnaces, kilns, boilers and incinerators
• Particulate and mists generated from metal cleaning/de-scaling operations
• Iron briquetting and pelletizing emissions
• Cleanup of syngas tars and particulate from reformers, gasifiers and reactors (syngas cleaning)
• Abrasive dusts including taconite ores, catalysts, metal carbides and oxides
• Explosive, radioactive and other hazardous particulate and gaseous emissions
• Dusts from material conveying, unloading and silo filing
• Particulate in humidified gas streams that can plug fabric filter collectors or as a final polishing step due to broken bags
• Heavy scale forming dusts and scrubbing solutions
• Chemical and metal deposition generated nano particles
• Acid gas scrubbing
• Forced condensation scrubbing
• General particulate scrubbing

For a more complete listing of the applications suited for the Series 7000/8000 Venturi Scrubbers, please visit our Industries/Applications section.

Please click here for pdf of the Bionomic Air Pollution Control, Product and Heat Recovery Systems Guide.