BETH® Tar-Electrostatic Precipitator Filters are a special development for use Hydrocarbons, tar, oil and fly ash are securely filtered out of the gas flow from 20 . Elex India Private Limited offering Electrostatic Tar Precipitator in Wagle Industrial Estate, Thane, Maharashtra. Get contact details, address, map on Indiamart. This type of precipitator is used in removal of tar from flue gases of carbon baking furnaces, producer gas plants, etc. Functional description of Electrostatic Tar.

Author: Nizilkree Voodoomi
Country: Russian Federation
Language: English (Spanish)
Genre: Marketing
Published (Last): 18 March 2005
Pages: 357
PDF File Size: 5.29 Mb
ePub File Size: 16.83 Mb
ISBN: 974-5-97458-769-3
Downloads: 36268
Price: Free* [*Free Regsitration Required]
Uploader: Moogunos

Also, raising or lowering the temperature can decrease cement dust resistivity for all the moisture percentages represented. While resistivity is an important phenomenon in the inter-electrode region where most particle charging takes place, it has a particularly important effect on the dust layer at the collection electrode where discharging occurs.

Reduced collection performance due to 1 and 2. Cottrell first applied the device to the collection of sulphuric acid mist and lead oxide fumes emitted from various acid-making and smelting activities. Particles build up on the collection plates and are removed from the air stream. The air stream flows horizontally through the spaces between the wires, and then passes through the stack of plates.

If the applied voltage is high enough, an electric corona discharge ionizes the air around the electrodes, which then ionizes the particles in the air stream. Particles that exhibit high resistivity are difficult to charge. Principles of Electrostatic precipitator and factors affecting performance. If these conductive particles are coarse, they can be removed upstream of the precipitator by using a device such as a cyclone mechanical collector.

Wet Electrostatic Tar Precipitator

Automatic plate-rapping systems and hopper-evacuation systems remove the collected particulate matter while on line, theoretically allowing ESPs to stay in continuous operation for years rlectrostatic a time. Experimental data lacking to substantiate which of these is predominant.


Reduced operating voltage levels; high operating current levels if power supply controller is not operating properly. As the dust layer builds up, and the electrical charges accumulate on the surface of the dust layer, the voltage difference between the discharge and collection electrodes decreases.

The moving-electrode type electrostatic precipitator we developed is suitable for high-performance collection of high-resistivity dust. The effects of relatively small amounts of acid vapor can be seen in the figure below and to the right. A negative voltage of several thousand volts is applied between wire twr plate. One solution, suggested by several manufacturers, is to wash the collector plates in a dishwasher.

American inventions Filters Chemical equipment Pollution control technologies Air pollution control systems Particulate control Gas technologies Solid-gas separation. Cottrell used proceeds from his invention to fund scientific research through the creation of a foundation called Research Corporation into which he assigned the patents.

Traditional CRT television sets tend to accumulate dust on the screen because of this phenomenon a CRT is a direct-current machine operating at about 15 kilovolts. Carbon can act, at first, like a high resistivity dust in the precipitator. NaCl – natural conditioner when mixed with coal. Functional description of Electrostatic Tar Precipitator: Another stainless steel electrode weight sits on top of the sample direct contact with elwctrostatic dust layer.

BETH Tar Electrostatic Precipitator

When back corona is present, the dust particles build up on the electrodes forming a layer of insulation. The test is run as a function of ascending or descending temperature, or both.

Thus, attractive and repulsive electrical forces that are normally at work at normal and higher resistivities are lacking, and the binding forces to the plate are considerably lessened.


When dust collection is performed on an aerosol with different size particles using an electrostatic precipitator, the precipiyator efficiency is high for the large particles, and low for the small particles.

The dust collection efficiency of Electrostatic precipitator is affected by the electrical resistivity of the dust collected.

In contrast to wet scrubbers which apply energy directly to the flowing fluid medium, an ESP applies energy only to the particulate matter being collected and therefore is very efficient in its consumption of energy in the form of electricity.

The operational theory was developed later in Germany, with the work of Walter Deutsch and the formation of the Lurgi company. Resistivity modifier if injected into gas stream. Pages with citations lacking titles Pages with citations having bare URLs All articles with unsourced statements Articles with unsourced statements from May Wikipedia articles needing clarification from May Articles with unsourced statements from November Commons category link is on Wikidata. Research Corporation has provided vital funding to many scientific projects: Then, a threshold voltage level is reached.

This additional cohesivity makes up for the loss of electrical attraction forces.

Electrostatic Tar Precipitator – ETP – Helios Infrapro (p) Ltd., Kolkata | ID:

Very significant voltage loss across dust layer. Pecipitator is the term used for migration of gas-suspended charged particles in a direct-current electrostatic field. In an ESP, where particle charging and discharging are key functions, resistivity is an important factor that significantly affects collection efficiency. By using this site, you agree to the Terms of Use and Privacy Policy.