Drizgas Tech Inbuilt Fume Hood scrubber is used to filter out acids and prevent them from being released into the environment. The scrubber is built-in as an integral part of the Hood. Fume Hoods protect users from toxic fumes released by acids, hazardous gas and organic solvents which regular steel hoods might not withstand.
Inbuilt fume hood scrubbers has been specifically designed to stay inside laboratory fume hoods. Contaminated air enters through two inlet ports from the bottom side of the Fume hood Scrubber and passes vertically upwards through a packed bed.
The scrubbing liquid is uniformly introduced above the packings and flows down through packed bed. The air and the scrubbing liquid pass in a counter-current flow for efficient gas/liquid contact.
The scrubbing of gases occurs within the scope of the fume hood scrubber before the gas is exhausted into the ductwork and shields valuable building ventilation systems.
Its upper mist eliminator prevents mist from reaching the exhaust fan then it passes through the reducer and clean gas exits the system.
Technical Specifications
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MODEL |
DHS – 60 |
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Air Handling volume |
1000 CMH |
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Removal method |
Gas absorption |
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Gas-liquid flow |
Vertical counter current flow |
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Material of construction |
8 mm Polypropylene |
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Scrubber Recirculation tank |
• Rectangular tank |
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• Tank Dimension : 570 mm (L) X 575 mm (W) X 450 mm (H) (Approx.) |
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• Tank working volume: 150 Litres |
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Pressure drop |
• 65 mm Water Column |
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Mist Eliminator |
• 150 mm thick PVC Vane |
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Scrubber column |
• Rectangular Packed bed column |
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• 1776 mm (L) X 608 mm (W) X 500 (H) mm Height |
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• Packing volume: 11 Cubic feet |
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Accessories |
• Water inlet port and outlet port |
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• Caustic dosing port |
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• Drain valve |
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• Overflow port |
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• Inspection view port with acrylic glass |
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Scrubbing circulation line |
CPVC |
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Packing material |
• Size: 38 mm |
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• Surface area: 128 m2/m3 |
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• Void space: 90 % |
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Flooding |
• 65 % |
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Tower Internals |
• Supporting plate for packing material |
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Scrubber inlet port |
• 300 mm Diameter |
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Scrubber outlet port |
• 250 mm X 250 mm |
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Scrubbing Liquid |
• 5 % Caustic solution |
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Efficiency |
• Above 99 % |
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Recirculation pump |
1 Nos. |
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Type |
• Centrifugal |
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• Horizontal mounted |
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Make |
Iwaki |
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Model |
MD40RLXT Water pump (Japanese Motor) |
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MOC |
Glass Fiber Reinforced Polypropylene |
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Discharge capacity |
75 LPM |
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Pressure |
4 metres of head |
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Connections |
1 inch |
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Motor |
• 1/12 HP, 120 V /50 Hz /Single Phase |
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• 3200 rpm |
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• 1.9 Amps |
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Recirculation pump |
1 Nos. |
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Type |
• Centrifugal • Horizontal mounted
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Make |
Iwaki |
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Model |
MD40RLXT Water pump (Japanese Motor) |
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MOC |
Glass Fiber Reinforced Polypropylene |
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Discharge capacity |
75 LPM |
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Pressure |
4 metres of head |
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Connections |
1 inch |
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Motor |
• 1/12 HP, 120 V /50 Hz /Single Phase • 3200 rpm • 1.9 Amps |
Standard available fume hood sizes
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Dimensions |
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Model No. |
CFM @29″ |
CFM @18″ |
Super structure |
Worktop |
Hood opening |
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W (mm) |
H (mm) |
D (mm) |
W (mm) |
H (mm) |
D (mm) |
W (mm) |
H (mm) |
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DGFH-90 |
567 |
354 |
915 |
1425 |
845 |
915 |
40 |
762 |
660 |
740 |
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DGFH-120 |
833 |
521 |
1220 |
1425 |
845 |
1220 |
40 |
762 |
965 |
740 |
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DGFH-150 |
1100 |
688 |
1525 |
1425 |
845 |
1525 |
40 |
762 |
1270 |
740 |
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DGFH-180 |
1367 |
854 |
1830 |
1425 |
845 |
1830 |
40 |
762 |
1575 |
740 |
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DGFH-240 |
1900 |
1188 |
2440 |
1425 |
845 |
2440 |
40 |
762 |
2185 |
740 |
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Features
- Scrubbing liquid recirculation system
- Scrubbing liquid make up system
- Dosing of chemical for pH adjustment
- Compact size
- Easy access for maintenance and repairs