Scrubbers
  

Scrubbers are used for removal of particulate matters and toxic gases.

Venturi Scrubbers

PECMA Venturi scrubber comprises a contact section called a venture section in combination with a separator section. Dust laden gas is led into the venture section where it passes through a water screen at the venture throat at high velocity. This results in a through mixing of water droplets and dust particles which agglomerate to form large particles which are then collected from the gas in the separator section. The water supply units and the atomizing system permits recirculation of water with high dust content.

Venture Scrubbers have successfully been installed for cleaning particulate matter from exhaust gas streams of foundries crushing plants, electric are furnaces , basic oxygen furnaces and urea prilling towers, phosphatic fertilizer plants and other chemical and petrochemical industries.

Pecma Impingement Scrubber

Pecma impingement scrubbers are available in different arrangements like spray tower.


The air may be forced to impinge on a seriesof baffles. These are gain low energy category scrubbers and have relatively low degree of particulate removal. The efficiency will range from 90 to 95 % for 10 microns particulars . Water consumption will range from 35 to 70 litres of liquid for per1000 M3 of gas.

DRY SCRUBBING SYSTEMS

This system uses the principal of gas and solid chemisorption technique for the removal of toxic gases like hydrofluoric acid,So2. ect. The system usually consists of gas-solid reactor followed by a fabric filter for collecting reaction products. This system is specially suitable for removal of particulate and gaseous fluorides from pot gases in an aluminium smelter and also for cleaning exhaust gases from refuse/chemical incinerators.

PACKED BED SCRUBBERS

PECMA vertical packed bed scrubbers are equipped with a very efficient contact zone, a gas distribution section, a liquid distribution system and a mist eliminator,The specially designed gas distribution section ensures even distribution of gases over the entire cross-section of the tower.

The highly efficient liquid distribution system combined with an even gas flow ensures a very intimate gas-liquid contact . The mist eliminator section effectively removes the carry over of liquid dropets from the contact zone. Packed Bed Scrubbers offer very high collection efficiencies at comparatively lower pressure drops. The effluent liquid can be recylcled in this process.

Packed Bed Scrubbers are used to remove corrosive fumes and toxic gases like sulphur dioxide , chlorine hydrochloric,hydrofluoric ,hydrogen sulphide,phosphatic acid , cyanides ammonia and other organic and inorganic gases etc.

OUTLET EMISSIONS ARE EVEN LESS THEN 1 PPm. CAN BE ACHIEVED

MECHANICAL COLLECTORS

Mechanical separation of particulate matter from the gas stream by centrifugal force is commonly used in mechanical dust collectors . PECMA offers medium and high efficiency cyclones . multi clones,Pulse Jet and Reverse Jet Bag Filter for different applications in Cement,Fertilizer,Pharmaceuticals , Coel fired Boilers, Cinter, Steel , Zinc and Copper smelter and many others where dust extraction and control is required.

Pecma Pulse jet has a compressed – air jet operating for a fraction of a second causing rapid vibration of ripple of the fabric which dislodges accumulated dust cake. The Pulse –jet design is predominantly used, because it is easier to maintain . Flow rates for pulse jet design is maintain.Flow rates for Pulse jet design ranges from 0.03 to 0.05 m/s for favourable dust. Felted fabrics are used for these designs because the cleaning mechanism is so vigorous that the pores of woven cloth are opened and excessive leakage may result.