Flue Gas Treatment Pollution Control Systems

Approx. Rs 2 Lakh / UnitGet Latest Price

Dust Extraction System:

In thermal power stations, Metal Furnaces , Coal/material Material conveying, Dust Generation is one of the most Nusiance .

Dust generation in a Material handling plant:

Loading point, Unloading point of belt conveyor, Discharge Chutes: Dust from the operation of belt conveyors originates mainly at the trail pulley where material is received and at the head pulley where material is discharged. Dust generation depends on belt width, speed, height of fall of coal.

Bunker Feeding Point: Crushed coal either directly from crushers or from the crushed coal stockyard is conveyed to boiler bunkers through traveling trippers or reversible shuttle conveyors. Dust is generated while loading the bunkers, spreading of which is controlled to some extent by conveyor sealing arrangement, and needs to be extracted from bunkers.

Crusher area: Crushers are used for size reduction in the coal or other particle. The huge gyratory or roller crushers are used for primary size reduction, while jaw or gyratory crushers are used for secondary size reduction. Large side hoods are used for dust extraction.

Dust Extraction Process:

The arrangement for dust extraction system for bunkers consists of eight Suction points, four on either side of Tripper Conveyor. The Tripper Conveyor feeds only two feeding points out of the eight, at a time. Thus for those two feed points, corresponding two suction hoods sucks dust laden gas in the system. While other six feeding points are closed using belt sealing arrangement. This dust laden gas is carried to the bag filer through interconnecting ducting.The gas is filtered through the bags due to the entrapment of dust particles into filter media. Each row of the bags, receives periodic pulses of compressed air, thus pulsing the bags, thereby dislodging the dust to the hopper. The pulsejet system is provided with a pressure switch to control the maximum pressure in the air header. The pressure drop across the bag house is measured by a Differential pressure Indicator or by a water tube manometer. In case of the excessive pressure drop, a Differential pressure switch comes into operation and provides a signal, which would be interlocked with Control Panel. The dislodged dust is collected in the hopper and discharged through the RAV. RAV is provided with zero speed switches to ensure overload protection of Geared motor. To improve the flow characteristics or to avoid chocking, rat holing, arching of dust in the hopper, Pneumatic knockers are provided on the hopper.

In order to control maximum level of dust in the hopper, a Level switch is provided. The level switch is to be interlocked with the control panel so that the dust level in the hopper should not rise above the set level. Coal dust is combustible and tends to form dust clouds, hence precautions for explosions is taken by providing explosion vent, to reduce the risks of property damage and personal injury. The Fan provided develops the necessary draft. The draft control of the Fan is carried by VFD. The VFD is provided with PID controller. The PID controller receives the signal from Differential pressure transmitter across the Flow measuring device, and gives controlling signal to VFD, to maintain necessary RPM of fan thereby maintaining necessary draft in the system. The clean air is discharged at the outlet of I.D. Fan.

Approx. Rs 1 Lakh / SetGet Latest Price

''Defective or mismanaged ventilation in chemical industries may expose workers to major health impacts like damage to the lungs, kidneys, liver and sensory organs, as well as death in extreme cases.

So to avoid these adverse health effects of over-exposure to the harmful gases generated from Chemical industries, we recommend you to avail the Ventilation systems specially designed and manufactured by keeping OSHA Laws & Regulations in mind.''

Industrial Ventilation systems:

The importance of clean uncontaminated air in the industrial work environment is well known. Modern industry with its complexity of operations and processes uses an increasing number of chemical compounds and substances, many of which are highly toxic. The use of such materials may result in particulates, gases, vapors, and/or mists in the workroom air in concentrations which exceed safe levels. Heat stress can also result in unsafe or uncomfortable work environments. Effective, well designed ventilation offers a solution to these problems where protection is needed. Ventilation can also serve to control odor, moisture, and other undesirable environmental conditions. The systems are offered according to guidelines of OSHA and ACGIH norms that are worldwide accepted.

Ventilation systems are of two generic types

• The SUPPLY system is used to supply air, usually tempered, to a work space.
• The EXHAUST system is used to remove the contaminants generated by an operation in order to maintain a healthful work environment.

These systems are designed for chemical & pharma industries, fettling shops of foundry and others. Our team of experts makes sure to produce a range of products, which meets the OSHA requirements in an efficient manner.

Exhaust Systems

Exhaust ventilation systems are classified in two generic groups:

• GENERAL exhaust system.
• LOCAL exhaust system.

The general exhaust system can be used for heat control and / or removal of contaminants generated in a space by flushing out a given space with large quantities of air.

Local exhaust ventilation systems operate on the principle of capturing a contaminant at or near its source. It is the preferred method of control because it is more effective and the smaller exhaust flow rate results in lower heating costs compared to high flow rate general exhaust requirements. The present emphasis on air pollution control stresses the need for efficient air cleaning devices on industrial ventilation systems, and the smaller flow rates of the local exhaust system result in lower costs for air cleaning devices.

Local exhaust systems are comprised of up to four basic elements:

1. Hood(s),
2. Duct system (including the exhaust stack and/or recirculation duct).
3. Air cleaning / Conditioning device (Dryer / Humidifiers / Dehumidifiers / Filters etc).
4. The fan.

In many pharma industries accidents are caused by uncontrolled emissions of noxious chemicals that can compromise the safety of workers in workplaces and destroy costly business.

And for all the above problems there''s just one stop solution, Whizz Engineering Services Pvt. Ltd. We with our expertise provide you with exact solutions which are of superior quality and made to last long.

Our objectives:

• To ensure the health of workers.
• To ascertain the safety of workers and business assets.
• To guarantee the efficiency and effectiveness of equipment and operational processes.
• To help bring about a cleaner and safer global environment.

Benefits of our Exhaust ventilation systems:

• Better control on chemical vapours
• Better ergonomics
• More efficient use of available local exhaust ventilation

Approx. Rs 2.5 Lakh / UnitGet Latest Price

Heat recovery is a method of salvaging a portion of the energy wasted by inefficient Heating, Venting and Air Conditioning (HVAC) systems. The systems have a limited efficiency due to the laws of thermodynamics and inherent inefficiencies with real applications.

Depending on the model, HRVs can recover up to 85 percent of the heat in the outgoing airstream, making these ventilators a lot easier on your budget.

We are known for offering exclusive Engineering Solutions for Heat Recovery Systems, Energy Management for Furnace Exhaust Gases . We provide complete study of the Processes and provide engineered solutions for Heat recovery and Energy Saving.

With heating costs increasing every year, it’s a good idea to make your boiler more efficient. A flue gas heat recovery system is very helpful in this condition.

By replacing the existing load with our recovered energy, many industrial and institutional organizations have been able to achieve savings of 20% on their fuel bills

We provide high quality Heat Exchangers, Gas Coolers, Centrifugal Fans, Pollution Control Systems and undertake turnkey execution to the customers at industry leading prices. Available in different technical specifications, these Heat Recovery Systems are highly demanded in different industries and sectors.

Some of the quality attributes are as follows:

• Durable standards
• Easy installation
• Corrosion resistant finish

Advantages & Applications:

· Reduces energy costs: All recovered waste heat directly replaces purchased energy, thereby reducing energy costs;

· Reduces cost of capital equipment: Reuse of waste heat allows for the use of smaller energy conversion equipment capacity, often resulting in savings in capital expenditures offsetting the cost of the heat recovery system;

· Reduces operating costs: Since waste heat recovery reduces energy costs and often also reduces capital costs, it reduces operating costs;

· Reduces environmental impact: Because all waste-heat recovery directly replaces purchased energy, it also reduces the environmental impact on air and water;

· Reduces GHG emissions: Waste-heat recovery by industry reduces GHG emissions associated with industrial operation;

· Global Energy Partners, in collaboration with EPRI, has conducted about 70 waste-heat recovery analysis for a wide range of manufacturing industries in North America.

· Waste heat below 100 °C could be used for the production of bio-fuel by growing of algae farms or could be used in greenhouses or even used in Eco-industrial parks.

· Waste Heat of medium (120-650 °C) and high (>650 °C) temperature could be used for the generation of electricity or mechanical work via different capturing processes.

Approx. Rs 2 Lakh / UnitGet Latest Price

Furnace Fume and Dust Extraction

Classically applied to all types of melting systems generating fumes during the refining process

Dust and Fume Extraction Systems clubbed with Heat Recovery Systems , Bag filter systems .For Efficient operation of any furnace the draft control at various stages of melting/refining is most important , together with the Pollution control of the dust and fumes generated during the process.

Approx. Rs 2 Lakh / UnitGet Latest Price

Bag Filters / Cyclonic Bag Filters:

Recovery of particulate matter from exhaust gas is vital for any industry and in many instances a bag filter is deployed to separate fine particles from air/gas to recover, finished product and/or to limit the particulate pollution of flue gases emitting from the plant. We offer Reverse Pulse Jet Bag Filter, which are proven to be most suitable for vast pollution control needs.

Technical specifications:

• Flow Arrangement: Parallel flow / Reverse Pulse Jet.
• Temperature Rage: 0⁰C to 540⁰C.
• Material of Construction: Carbon Steel / AISI 304 / AISI 316 / FRP / Custom Made.
• Fabrics: Polyester / Polypropylene / Ryton (PPS) / P – 84 / Metal wire mesh /Acrylic / Nomex.

Exclusive features of our designed Bag Filter:

Very low pressure drop due to pre-settling of dust in chamber.

High particle size collection efficiency up to 99.99 % for 1 micron.

Dust with temperature ranges from 0⁰C to 540⁰C.

Moisture levels up to 10 %.

Applicable for acidic as well as well as basic conditions with the advances in the filters.

Compact design, with sufficient access points for easy maintenance.

Strong and externally stiffened casing suitable to withstand strong internal pressure.

Instrumentation and control systems for user friendly operations.

Ventury guided pulse cleaning for better dust cake removal and low air consumption.

Bottom Hopper mechanical force operated dust dislodgement arrangement.

Strong cage design, Solid fabricated/casted Ventury and positive locking arrangement for long and trouble-free operations.

Suitably designed Dust removal Device like Rotary Airlock Valve, Screw Conveyors etc.
Provision for Explosion Valve and Fire Preventing Sprinkler system.

Multi-tube Dust Collectors / Cyclones:
A multi Cyclone as was conventionally available was a battery of Axial or Radial entry Multi Cyclones. An axial entry cyclone is suitable to handle very large gas flows with lower collection efficiency however Radial entry cyclones used for handling relatively small gas flows with higher collection efficiency. Old Cyclones suffers from economical achievement of High fractional collection efficiency at lower pressure drop.

Technical specifications:

• Flow Configuration: Axial Entry / Radial Entry / Single Cyclone / Multi-cyclone.
• Handling media: Flue gas / Contaminated Air / Water.
• Material of Construction: Carbon Steel / AISI 304 / AISI 316 / hard lining / Custom Made.

Exclusive Features of our designed Cyclones:
Designed based on considering thermodynamic, Compressibility properties of media.
Highly efficient design with proven performance.
Customized solutions using flow modeling and simulations.
Modular design easy to transport and erect.

scrubbers

Gas scrubbers play vital role in gas cleaning as they not only separate out the dust but poisonous gases also. Classically scrubbers are classified according to application and structural design namely Spray Tower, Tray tower, Packed Bed Scrubber and Ventury Scrubber.

Operation Mode: Automatic, Semi-Automatic

Technical specifications.

• Handling media: Flue gas/Contaminated Air
• Scrubbing media: Water/Caustic/Lime/Limestone/Magnesium Oxide/Dual Alkali/Hydrogen Peroxide, etc.
• Material of Construction: Carbon Steel/AISI304/AISI316/FRP/Custom Made.
• Operation: Once through/Recirculation.

Additional Information: