{"id":4432,"date":"2021-12-17T09:16:39","date_gmt":"2021-12-17T09:16:39","guid":{"rendered":"https:\/\/paramountlimited.com\/?page_id=4432"},"modified":"2024-09-25T11:37:32","modified_gmt":"2024-09-25T11:37:32","slug":"products_emission-control-systems","status":"publish","type":"page","link":"https:\/\/paramountlimited.com\/?page_id=4432","title":{"rendered":"PRODUCTS_Emission Control Systems"},"content":{"rendered":"\t\t
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Emission Control Systems<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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High Efficiency Venturi Scrubber<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Paramount designed high efficiency venturi scrubbers which is a cost-effective solution making them ideal for Fine Particulate Matter removal over a broad range of industrial and manufacturing applications. \u201cVenturi\u201d type scrubbers fall under the category of wet scrubbers for removal of solid particulate matter from gas streams.<\/p>

Paramount Limited designs and supplies Venturi type wet scrubbers in two models \u2013 Fixed throat venturi wet scrubber and Variable throat venturi wet scrubber.<\/p>

Venturi scrubbers are employed where the solid sizes are fine wherein the regular cyclone separator becomes inefficient and use of bag filters call for frequent purging to maintain the differential pressure across the bag filter. Venturi type wet scrubbers can also effectively work with sub micron particulate less than 3 microns.<\/p>

The pressure drops across a venturi type wet scrubbers are normally higher than the conventional dry scrubbers like a cyclone separator or a bag filter. The pressure drop across the system is also a function of separation size of the solid particles. Finer the size for separation, higher is the pressure drop.<\/p>

The scrubbed liquid with solid particles is normally dewatered to recover the liquid and re-circulated to the practical extent with some fresh air makeup.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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If employed with flue gas wherein a scrubber is also present, a part of the scrubber recycle liquid can also be effectively utilized for the Venturi wet scrubber.<\/p>

The Venturi scrubbers are offered in two models<\/p>

  • Fixed throat used primarily for particulate removal, recommended for exhaust streams containing particles with a defined size distribution and can achieve moderate gas absorption for soluble\/reactive gases<\/li>
  • Adjustable\/ variable throat ideal for applications with variable exhaust volumes with Adjustable throat size and pressure drop<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Fixed throat venturi scrubber<\/strong> is employed in systems wherein the flue gas flow rate is constant and having minimal variations. The constant flow rate enables to maintain a consistent velocity across the venture throat for effective removal of the solid particle. In units wherein the constant flow rate cannot be maintained and the client prefers a fixed throat venture, an adaptable system with clean flue gas recirculation arrangement is also provided to maintain a constant flow and hence a constant velocity across the venturi. Under very low flow conditions, the flow rate in such case will have to be enhanced by bleeding in fresh air to the system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Variable throat venturi scrubber<\/strong>\u00a0is employed in systems wherein the flue gas flow rate is variable and the system requires operation in turn down condition for longer durations. The constant velocity across the venture is maintained with the help of a variable throat plummer to vary the cross-sectional area across the throat and hence velocity. The plummer is adjusted with the help of a pneumatic cylinder arrangement and controlled by the differential pressure across the venture.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    The material of construction of the Venturi wet scrubbers depends on the solids characteristics and the flue gas condition. It is normally of Stainless steel construction. The variable throat can also be provided in Titanium or Hastelloy materials.<\/p>

    Industrial units are made for capacities up to 425000 m3\/hr (250000 acfm).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Typical applications of High Efficiency Venturi scrubbers for Fine particulate removal are:<\/strong>

    \u2022 Lime Kilns
    \u2022 Bark and Hog Fuelled Boilers
    \u2022 Coal Fired Boilers
    \u2022 Oil Fired Boilers
    \u2022 Cupolas
    \u2022 Calciners and Kilns
    \u2022 Paper Plant Recovery Boiler
    \u2022 Electric Furnace Emissions
    \u2022 Coal Dryers
    \u2022 Scrap Incinerators
    \u2022 Liquid Waste Incinerators
    \u2022 Sewage Sludge Incinerators
    \u2022 Coke Ovens
    \u2022 Fertilizer Plants
    \u2022 Municipal Incinerators
    \u2022 Sintering Plants
    \u2022 Cement Kilns
    \u2022 Pathogenic Incinerators<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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    High Efficiency Air Filter \u2013 HEAF For sticky and oily particulates, Aerosols and Mists\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    High Efficiency Air Filtration devices manufactured under the trademark HEAF are used to control emissions from sources where fabric filters cannot be used because they plug up with sticky or viscous particulate materials, where as wet scrubber require excessive energy consumption because of extremely small size distribution of the particulate matter, or where electrostatic precipitators cannot be used, because the particulate matter fouls the collection plates and causes shorting between the electrodes.<\/p>

    HEAF devices are manufactured in four different types. These units are Mini HEAF, the Stationary Drum HEAF, the Flat Bed HEAF and the Rotary Drum HEAF.<\/p>

    The Mini HEAF is used for small air pollution sources and uses a manually changed cartridge filter for the capture of air pollutants. The stationary Drum HEAF is used only for a pressurized gas stream where the fully automatic operation is required. The Flat Bed HEAF uses roll type filters for moderate gas flows and fully automatic in operation. The Rotary Drum HEAF unit is a fully automatic filter used for individual emission control applications up to 210100 m3\/hr (125000 acfm) in a single unit.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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    Paramount offered systems are well-suited to a broad range of industrial applications, including the plasticizer, asphalt saturator, and food processing industries. All of our systems boast extremely high removal efficiencies, often exceeding 99.99%, even for difficult-to-remove emission.<\/p>

    The typical areas of applications of the HEAF units are:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    \u2022 Asphalt Roofing Manufacture
    \u2022 Asphalt Pipe Coating
    \u2022 Plasticizer Emissions
    \u2022 Meat and Fish Smokehouses
    \u2022 Fiber Glass Curing Ovens
    \u2022 Core Bake Ovens
    \u2022 Polymeric Coating and Curing Ovens
    \u2022 Vegetable Oil Expellers and Extractors
    \u2022 Floor Tile Manufacturing
    \u2022 Scrap Metal Preheaters and Dryers
    \u2022 Tube and Wire Drawing Emissions
    \u2022 Plywood Veneer Dryers
    \u2022 Restaurant Broilers
    \u2022 Latex Dryers
    \u2022 Wire Coating and Curing
    \u2022 Electrode Manufacturing Emissions
    \u2022 Rubber Vulcanizing and Compounding
    \u2022 Pouring Foundries<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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    \u2022 Phenolic Resin Emissions
    \u2022 Sulphur Emissions
    \u2022 Organic Chemical Reactor Discharges
    \u2022 Nylon Extrusion Emissions
    \u2022 Heat Treating Smoke
    \u2022 Commercial Food Frying Operations
    \u2022 Adhesive Curing Ovens for Tape
    \u2022 Aluminium Foil Rolling
    \u2022 Coffee\/Cocoa Bean Roasting Emissions
    \u2022 Peanut Roasting Emissions
    \u2022 Hardboard Tempering Ovens
    \u2022 Electroplating Aerosols
    \u2022 Mobile Asphalt Kettles and Tankers
    \u2022 Automobile Shredders
    \u2022 Drop Forge and Forge Press Emissions
    \u2022 Coal Gasification & Conversion
    \u2022 Mineral Wool Curing Ovens<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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    Cleanable High Efficiency Air Filter (CHEAF)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Paramount offers unique solutions with a complete line of submicron aerosol removal systems to remove from traditional aerosol and mist elimination applications to the removal of difficult-to-control sticky, oily, or soluble aerosol emissions.<\/p>

    The Cleanable High Efficiency Filtration device manufactured under the trade mark of CHEAF is a wet collector system which uses either a polymeric, metallic or glass fibre filtration mat to remove submicron particulate matter from the exhaust gas streams. For many applications, the CHEAF unit offers substantially reduced energy consumption over that required for a venturi scrubber on the same application. The CHEAF can be used on a most particulate matter which is not sticky or viscous and which does not deposit scale on the fibre mat.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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    The two different types of CHEAF are the fully cleanable type and the renewable media type. Fully cleanable CHEAF units can be used<\/strong><\/p>

    • On dust emissions in the mineral and mining industries,<\/li>
    • On inorganic chemicals, dryers and calciners,<\/li>
    • On prill tower emissions in the manufacture of ammonium nitrate and urea.<\/li>
    • For spray dryer emissions in the food products and flavouring industries and<\/li>
    • The perfume manufacturing industries.<\/li><\/ul>

      Where acidic emissions are encountered, the renewable media CHEAF unit is used. These industries include<\/strong><\/p>

      • Container glass and plate glass manufacturing<\/li>
      • Furnace grade phosphorous manufacturing<\/li>
      • Galvanizing emissions and several others<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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        Single units of CHEAF can be built to handle gas flows up to 680000 m3\/hr (400000 acfm).<\/p>

        The typical areas of applications of the CHEAF units are:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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        \u2022 Phosphoric Acid Mists
        \u2022 Hydrochloric Acid Mists
        \u2022 Nitric Acid Mists
        \u2022 Detergent Manufacturing
        \u2022 Food and Flavouring Spray Dryers
        \u2022 Ammonium Nitrate Prilling & Pelletizing
        \u2022 Compressed Air Filtration
        \u2022 Urea Prilling and Pelletizing<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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        \u2022 Soda Ash Calciners
        \u2022 Soda and Borosilicate Glass Furnaces
        \u2022 Vacuum Pump Discharges
        \u2022 Galvanizing Emissions
        \u2022 Potassium Chloride Dryers
        \u2022 Molten Salt Baths
        \u2022 Electroplating Bath Emissions
        \u2022 Phosphorus Furnace Emissions
        \u2022 Process Gas Filtration<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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        Flue Gas Desulphurization Systems (FGD)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        Paramount offers world famous and proven patented Sulphur dioxide scrubbing system with 95-99% + sulphur dioxide removal efficiencies. A unique feature worth mentioning is, the system works equally well on low and high inlet sulphur dioxide concentrations. Even with large variations in the inlet sulphur dioxide concentrations to the scrubbing system, the system produces an almost constant outlet sulphur dioxide concentrations. This characteristic of our scrubbing system is due to its operation in the \u201cConcentrated absorption chemical mode\u201d. This system differs substantially from the other sulphur-dioxide removal processes.<\/p>

        The acting chemical in the scrubbing system is sodium sulfite. The concentration of dissolved solids in this system is maintained at a much higher level than other conventional system enabling the system to have low recirculated liquid flow rate to the scrubbing system and more sulphur dioxide capturing capacity per unit volume of scrubbing liquid. This characterizes in the reduction of the recirculation system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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        \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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        The scrubbing system uses \u201cpatented, non-plugging, low differential pressure Horizontal spray-baffle type scrubber Though both horizontal and vertical versions (Disc and Donut Scrubber) are available, we recommend the horizontal unit which provides the greatest ease of operation and maintenance. This system can be combined with Venturi Scrubber if the gas stream has significant particulate matter.<\/p>

        Another unique feature of our scrubbing system is it always operates in an acidic mode. When NaOH is added to the system as a make up reagent, it converts to sodium bisulphite back to sodium sulphite, rather than existing in the scrubbing solution as free sodium hydroxide. The same is true in case soda ash is used in place of NaOH.<\/p>

        Another common problem in conventional scrubbers is calcium scaling in the scrubber. The scaling magnitude is predominant in the alkaline mode of operation as calcium precipitate as calcium carbonate and calcium sulfate causing severe scale formation in the scrubber. This scrubbing system operates on the acidic mode of operation and even dramatic variations in sulphur dioxide concentration cannot take back the system to the alkaline mode of operation thus calcium precipitation is practically avoided in this design of scrubbing system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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        Advantages of Paramount design FGD having Horizontal spray baffle scrubber:<\/strong><\/p>