Dust Purification Equipment
Dust purification equipment is designed to control contaminant levels in the air. The system draws contaminated air into a filter that then exhausts clean filtered air back into the work area.
Cartridge dust collectors use pleated non-woven fabric filters in a cylindrical or oval shape to capture dust, smoke and fumes. They can also be equipped with a pulse-jet cleaning system that keeps the filters particulate-free between cleanings.
Industrial-grade dust collectors
Industrial-grade dust collectors are used to reduce hazardous airborne particles in workshop settings and plant environments. They are a type of air pollution control equipment that is used to comply with EPA regulations and protect workers in manufacturing, processing, and fabrication industries.
Industrial dust filtration systems include industrial vacuum systems, downdraft tables, and collection booths. A downdraft table or booth uses a fan to generate a downdraft that pulls the dust particulate into a filtering area. The filtered air is then returned to the workspaces. These systems are usually used for sanding, grinding, welding, plasma cutting, and industrial painting.
Other types of industrial-grade dust collection systems include baghouses, cartridge collectors, and cyclone separators. Baghouses provide larger-scale filtration and collect large to moderately-sized particulate with the use of fabric bags and cages. They are ideal for high-use applications and come in different sizes to suit your needs.
Cartridge dust collectors offer quality filtration in a compact size. They contain cylindrical or triagonal cartridges that are wrapped in pleated filtering material. The design of the cartridges allows for more surface area, which helps them to remove a higher concentration of particles from the work environment. The air moves through the filters and a differential pressure sensor reads the difference between dirty and clean air, which triggers the filter cleaning system.
Almost any industrial environment can benefit from the use of an industrial-grade shop vacuum. These vacuums suck up debris, dust, and heavy objects and don’t throw these irritants into the Dust purification equipment air like sweeping might do. This can save a company time and money on clean-up and waste management costs.
These vacuums usually have a large, tough hose and canister for holding the debris that gets sucked up. Most are mounted on caster wheels and are easy to move around the work area. They also feature a power cord and a cover for the power switch to prevent accidental turns on the machine. They are designed to withstand harsh environments.
Most shop vacuums have a bigger motor than home vacuums so that they can suck heavy objects and liquids. They are typically designed to have bigger gallon capacities as well. They may be able to accommodate multiple attachments for specific tasks, and some can even function as blowers.
Industrial-grade vacuums are often designed with washable filters to reduce the need for replacements. Some even come with a HEPA filter that is ideal for sucking up fine particulate matter. These can be helpful if you have employees who are sensitive to allergens. In addition to these features, many of these machines come with a hose attachment for sucking up wet debris.
Cyclone separators use a circular motion to separate coarse, large-sized particulate matter from air streams. They’re often used in woodshops, shot blasting processes, and grain mills to filter dust particles out of incoming gases. They’re able to remove between 50-99% of all fine and rough debris from gas streams.
They work by rotating at high speed in an upside-down cone or cylinder container. An airflow inside the cyclone creates two spiraling vortexes, one managing coarse, large-sized material while another filters out finer, smaller particles. The resulting grit is collected in a hopper, while clean air moves out the top of the cyclone.
Particle density is a major factor determining the efficiency of a cyclone separator. Dense particles are more easily separated, while less dense ones require a higher separation pressure to remain entrained in the spinning motion. The materials a cyclone separator is made from are also important. They must be hard and abrasion-resistant, able to handle corrosive air and gas, and withstand the high-speed particle impacts.
The inlet and outlet designs of a cyclone separator also affect its separation efficiency. The inlet must be designed to allow the contaminated air stream to enter tangentially, allowing the cyclone separator to accelerate its rotation and promote particle separation. The inlet must also be a size that allows for proper gas flow through the body, while the dust outlet should be a quarter of the cyclone’s body diameter.
An inertial separator, also known as an inertia dust collector or air cleaner, is an effective precleaner for gas turbine inlet air streams that Dust purification equipment contain heavy concentrations of particulate. It removes the heavier particulate and moisture from the stream, prolonging the life of more efficient secondary or final stage filters.
In operation, the inertial separator comprises a tubular body having a plurality of vanes to swirl the air passing through it and centrifugally separate contaminants based on their size. The inertial separator is constructed of injection molded plastic, preferably polypropylene, with aluminum or equivalent fibers well dispersed therein to provide static charge dissipation.
The axis of the separators in one stage is offset from the axes of the separators in another stage, allowing for different particulate separation efficiency at different particulate sizes. The design allows the inertial separator to operate at a wide range of flow velocities without losing efficiency, making it a versatile precleaner for a variety of applications.
Field tests performed in a coal-fired power plant indicate that the rod-grid inertial separator is an effective dust trap for ESPs, achieving high removal efficiency of fly ash from flue gases at flow velocities up to 20 m/s-1. The results also show that particle trajectories of smaller particles are dominated by the flow direction, while paths of larger particles are influenced by their inertia and bounce characteristics from the rod-grid inertial separator.