How do electrostatic precipitators reduce air pollution?
The electrostatic precipitator works by removing particles and smoke from a gas stream using an electrostatic charge. Introducing a water spray can reduce the electrical resistance of the dust particles, allowing them to accept the charge more easily.
How does a electrostatic precipitator use static electricity?
An electrostatic precipitator is a type of filter (dry scrubber) that uses static electricity to remove soot and ash from exhaust fumes before they exit the smokestacks. When these fuels undergo combustion, smoke is produced. Smoke consists of tiny particles of soot that are suspended in hot, rising air.
How do electrostatic precipitators work quizlet?
In the electrostatic precipitator, particles are given a negative charge. This causes them to be attracted to a positively charge plate, where they are held. Periodically they are removed from the plate and collected for disposal. The scrubber is when particles are “scrubbed” from the exhaust stream by water droplets.
Where and why are electrostatic precipitators used?
Originally designed for recovery of valuable industrial-process materials, electrostatic precipitators are used for air pollution control, particularly for removing harmful particulate matter from waste gases at industrial facilities and power-generating stations.
How does a electrostatic precipitator work for kids?
Electrostatic smoke precipitators work by forcing dirty flue gas (the gas escaping from a smokestack) past two electrodes (electrical terminals), which take the form of metal wires, bars, or plates inside a pipe or smokestack. The first electrode is charged to a very high negative voltage.
What is the use of electrostatic precipitator Mcq?
Originally designed for recovery of valuable industrial-process materials, electrostatic precipitators are used for air pollution control, particularly for removing particles from waste gases at industrial facilities and power-generating stations.
Which pollutants are reduced in automobile exhaust emissions by using a catalytic converter quizlet?
The combustion of petrol in car engines produces toxic carbon monoxide and unburied hydrocarbons. Catalytic converters are made to reduce these pollutants in exhaust gases. Catalytic converters help combine carbon monoxide and unburned petrol with oxygen to form carbon dioxide.
What are the major sources of anthropogenic air pollution quizlet?
Anthropogenic means it is caused by human activity. List three sources and types of natural air pollutants. 1, natural fires – smoke; 2, volcanoes – ash and acid; 3, sea spray – sulfur.
What are the advantages of electrostatic precipitators?
Advantages of electrostatic precipitator: It can be used for the collection of both dry and wet impurities. It has low operating costs. The collection efficiency of the device is high even for small particles. It can handle large gas volumes and heavy dust loads at low pressures.
What are the major steps of the process of electrostatic precipitator?
The process of trapping particulate matter by electrostatic precipitator includes four steps: (1) negative high-voltage discharge, flue gas ionization, generation of negative ions; (2) fly ash is charged by electric field and negative ions; (3) charged fly ash is collected to the anode plate; (4) after rapping, the fly …
