tElectrostatic dust collector (Electrostatic Precipitator ,ESP)
It is a tool that uses electrical force to separate particles by adding a charge to the particles. Then the charged particles pass into the electrostatic field. Particles move towards the collecting plate with opposite electric potentials. ESP is highly efficient in capturing dust smaller than 1 microns more than 99.5%. Pressure loss is low and can capture hot gases. This device Has the ability to trap dust particles. Oil vapors smaller than 1 microns have a trapping efficiency of up to 99%. Currently, they are used to capture small oil mist and dust. In the dyeing industry, such as exhaust gas from a Stenter machine, etc., the working principle of this ESP machine is to create a static electric field. To separate dust particles out and oil vapor from the exhaust gas. which this separated oil Can be reused for combustion in place of oil. The stove is very good, divided into
ESP For the dyeing industry
ESP For the plastic production industry
ESPFor the aluminum casting industry
ESP for kitchens, cafeterias, hotels, hospitals
ESP for boiler or ESP for radiator
Electrostatic dust trap (Electrostatic Precipitator ,ESP) This is commonly used in power plants such as biomass power plants, waste power plants, and coal-fired power plants.
Because dust from incomplete combustion causes small particles to come out, causing dust pollution problems. such as PM dust events
2.5 in the heart of Bangkok and dust from burning agricultural sector as well
Working principle of ESP have 3 steps is
– Putting an electric charge on a particle
– Collection of charged particles using electrostatic forces from an electric field.
– Separation of particles from the stored in storage tanks
Components of the machine ESP There are important components. 4 part is
Discharge Electrodes are wires, sheets or pipes that are then applied with high voltage to cause them to break down into ions.
Collection Electrodes Collection Electrodes Collection electrodes are mostly sheets. Because it can accept a large amount of gas.
Rappers Dust Separator Dust Separator is used to separate dust from the collection plate.
Hopper tank
Machine safety considerations ESPThe operator must be trained in the operation of the machine because of the high voltage current. The ESP machine cannot work if there is a fuel gas (CO, CH4) or a voltage drop. Dust or particles trapped on the metal plate can be cleaned by knocking them out. Scrub off with a brush and rinse with water or metal plate cleaner. which saves on cleaning costs But you must be careful of the dangers of High electrical potential should be treated by a technician.
From the system mentioned Electrostatic precipitator is a system that uses a high voltage potential. And traps dust with the force of coulombs, which can increase the efficiency of absorbing gases and eliminating various odors with the ACTIVATED CARBON filter as well. In addition, the efficiency of trapping dust of each size is different. There are factors that depend on the intensity of the electric potential between the plates. Metal and wire and the time of the particle moving through the electric field. To increase the efficiency of dust trapping, a HEPA FILTER filter is used in the last step of dust trapping as well.
RElectrostatic dust collection system (Electrostatic Precipitators : ESP) Use electrical force to separate Particles leave the gas stream. By putting an electric charge on the particles then passes electrically charged particles into Static electric field these particles will move in is found and stored on a storage plate which has an electrical potential opposite to that of
Source:
ESP particles are highly effective in collecting dust particles smaller than 1 microns, generally with 99.5 % or higher efficiency. Currently, ESP is widely used as an air pollution treatment system in industrial plants, such as Power plant, foundry, steel, cement plant chemical production plant
From comparing the selection of dust trapping methodsvarious types
It shows that it is used. Electrostatic dust collector Electrostatic Precipitators : ESP Capable of capturing less dust than 0.1 Mocron.
Found thatDust collection system Gravity Settler, Cyclone, Spray Tower Scrubber, Packed Bed Scrubbercommonly used Unable to trap PM 2.5 dust. Tray or Plate Scrubber and Venturi Scrubber have moderate dust trapping efficiency. Can trap dust with sizes starting from 1 microns. The bag filter system and electric dust collection systemstatic (Electrostatic Precipitators : ESP) Can trap PM 2.5 very well
