Air Pollution Control System

Our air pollution control plants, containing scrubbers control air pollution from stationary sources. It employs a liquid medium generally water, to remove particulate and gaseous contaminants from the exhaust by washing. From the application point of view, scrubbers can be classified in to 3 broad categories namely Fume Extraction Systems, Pneumatic Dust Handling Systems and Thermal Utility Systems.

We at EWS design Venturi Scrubbers characterized by high energy and high collection efficiency scrubber for collection of micron size particles. Our scrubbers are relatively maintenance free and are thus preferred for all application.

The venturi scrubber utilizes a venturi to entrain contaminated gases, generally without the need for a blower in some applications. The relatively high liquid to gas ratio, liquid atomisation and open internal design provide effective scrubbing of heavily contaminated gases with minimal maintenance and virtually unlimited turndown capabilities. It can handle wide-ranging conditions while removing both toxic gases and particulate matter. Contact between the scrubbing liquid and the gas results in high gas mass transfer and/or particulate capture.

This system generally consists of a venturi, separator, sludge/ recalculation tank, pumping and dosing system.

This scrubber can be classified as low energy and good collection and efficiency scrubber for gaseous pollutants.

Packed bed scrubbing equipment includes countercurrent, vertical flow packed beds and crossflow horizontal scrubbers. These units generally used to absorb gas phase contaminants from exhaust gas stream. They are generally combined with chemical treatment equipment to not only collect the gas phase contaminants but convert them into harmless substances which can be recovered or easily disposed.

The Packed Bed Scrubber System generally consists of packed bed column, pumping and dosing system and sludge disposal system.

EWS developed sieve tray scrubbers is of low energy, moderate collection efficiency for both gaseous and particulate pollutants. A sieve type scrubber consists of a hollow vertical tower one or more plates mounted transversely in the tower. Gas comes in at the bottom of the tower and must passes through perforation provided in the plates before exiting in the top. Liquid is introduced at the top plate and flows successfully across each plate as it moves downward to the liquid exit at the bottom. The gas and liquid contact allows the mass transfer or particulate removal.

The Sieve Tray Scrubber generally consists of column with number of sieve plates, pumping and dosing system.

• Gas flow and temperature
• Pressure drop available
• Gas stream composition
• Sludge disposal system
• Emission standards compliance

• All SS 304 or suitable stainless steel construction for temperature and corrosion resistance
• Compact package size, prewired and prepiped skid mounted Unit
• Low Moisture content Exhaust gases
• Induced fan is small and quit and uses very little power
• Higher Collection Efficiency
• Adjustable venturi-throat for better atomisation and liquid gas contact
• Non clogging and can high inlet gas temperatures
• Low differential pressures
• No High Voltage Hazards

• Liquid Fuel Fired Boilers
• Solid Fuel Fired Boilers
• Furnaces
• Incinerators
• DG sets
• Fuelgas Cleaning System

We at EWS can supply customized wet scrubber to our clients understanding the specific application and their need. We at WAPP has expertise in designing and commissioning of wet type scrubbers.

• Removal of particulate
• Removal of gaseous pollutants
• Simultaneous removal of particulate and gaseous contaminants up to any desired efficiency

EWS can supply the following types of scrubbers, which include:

• Venturi Scrubbers
• Packed Bed Scrubbers
• Sieve Plate Scrubbers

Additional to the above we at EWS also supplies Multiclones, Fabric Filter Systems for dust control and catalytic converters for oxidation/ reduction of air pollutants.