RIECO INDUSTRIES LIMITED
ISO 9001-2008 CERTIFIED COMPANY
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AIR POLLUTION CONTROL SYSTEMS (APC)
RIECO has been a pioneering name in the field of Air Pollution Control and
specializes in the engineering and design, manufacturing and erection,
installation and commissioning of nuisance Bagfilters, Baghouses and entire
dedusting systems, Electrostatic precipitators and Scrubber systems. The Bagfilters also form parts for collection of products in SRE systems and Pneumatic handling systems.
RIECO developed the first patented compressed air reverse jet cleaning filter combined with the use of high density felt material for gas filtration. From here we have come along way accumulating rich experience, update and advanced knowhow and extensive database.
The RIECO dry Electrostatic Precipitator (ESP) can be used to extract fine dust particles from process gases up to a temperature of 400 Celsius by means of an artificial electrostatic charge. The dust-laden process gas enters the ESP horizontally, and is spread to a uniform flow profile across the entire filter cross-section by means of a gas distribution system. By means of the high voltage applied between the corona discharge electrodes and the collecting electrodes, the process gas and the dust particles are electrically charged.
The Wet Electrostatic precipitator is for applications where the special dust or gas characteristics make separation difficult. The RIECO wet Electrostatic Precipitator (ESP) is reliable and unbeatable since many years in view of operational safety, long life cycle and the collection efficiency. These are excellently suited for fine dust afflicted with water drops or aerosols and emissions containing tar or oil. An added and distinct advantage is the binding and control of toxic emissions like HCl, SO2 and HF fumes.
The process gas enters the wet ESP horizontally, and is spread to a uniform flow profile across the entire filter cross-section by means of a gas distribution system. By means of the high voltage (78 to 135 KV) applied between the corona discharge electrodes and the specially designed honeycomb-type collecting electrodes, the process gas and the dust particles are electrically charged. On the route through the electric field, the charged particles are transported to the honeycomb type collecting electrodes by the electric field strength where they agglomerate with the existing dust particles and are flushed off by a periodically working washing system. The drain water flows from the honey comb through the gas distribution system to the filter bottom. The purified gas leaves the filter through the gas outlet hood.
We have an established expertise in Low Energy Scrubber for Liquids, particularly applicable for a various sectors like Steel, Foundry, Cement, Thermal power, Aluminum, Chemical, Food and Pharma industry. Scrubbers provide a versatile means of removing both particles and pollutant gases from the exhaust stream of many industrial processes. These devices use water to make small, hard-to-collect particles easier to collect by incorporating them in larger water droplets. Gases can be absorbed by virtue of their solubility in water or by adding chemicals to the water. Scrubbers can be constructed in all sizes. They can be small enough to accommodate low volumetric gas flow rates of small chemicals processes, or they can be designed large enough to remove gases such as sulfur dioxide from large coal fired power boilers.
The Ventriscrub is conventional in every respect. This venturi scrubber features wet approach inlet which eliminates wet/dry line build-up problems. Unit can be furnished with a fixed, butterfly or two door venturi throat section; smooth or flooded elbow and a conventional cyclonic mist separator. Larger separators may be furnished with radial inlet and mesh pad or chevron type demister section.
Dust laden gases enter the unit vertically. Scrubbing liquid is introduced utilizing tangential pipes and a spray header, if required, over the venturi throat section to ensure complete coverage. The venturi throat is set to operate at desired pressure drop for highest collection efficiency. Scrubbed gases then make a 90 degree turn and enter a cyclonic separator where separation of the gases and free liquid droplets takes place. The slurry is discharged through the bottom and dewatered scrubbed gases are exhausted vertically via the top outlet.
A typical Lime/Limestone Flue Gas Desulfurization (FGD) system consists of three major sub-systems : The reagent (lime or limestone slurry) preparation; the scrubber/SO2 absorber and mist eliminator; and the slurry/solid waste disposal systems. A quencher may be added to cool and pre-condition the inlet gases when high-temperature gases are to be handled.
Combining the design features of a spray tower and a turbulent contact absorber, RIECO Multiscrub-V system can easily achieve more than 98% SO2 absorption efficiency at total energy consumption for fan and pumps lower than that of a spray tower system.
For a lime FGD system, a lime slaker, processing pebble lime is required in place of the limestone wet ball mill. To facilitate the disposal of the solid waste, or to produce a saleable product in the form of high quality gypsum, a forced oxidation system may be utilized to oxidize the main reaction product, calcium sulfite, to gypsum. A schematic flow diagram of the system is depicted. We can assist by designing the most suitable system for you based on these lines.
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