Maintenance and renovation of electrostatic tar collectors

Thread Content

This post was last edited by sdos34 on 2015-10-19 at 16:25. Working principle of the magnetically controlled electric tar catcher: The magnetically controlled electric tar catcher consists of two main parts – a magnetically controlled high-voltage DC power supply and the actual electric tar catcher unit. The negative high voltage generated by the high-voltage DC power supply is applied to the corona electrode (cathode), and an electric field is created between it and the precipitation electrode (anode). When the intensity of this electric field exceeds a certain limit, corona discharge occurs between the two electrodes; at this point, the gas passing through the electric field region gets ionized, producing a large number of ions and electrons. A strong electromagnetic noise can be heard in this area, and a purple-blue corona can be seen in low-light conditions. In gas exposed to an electric field, particles such as tar, dust, and water mist become charged by combining with ions or electrons, and then move toward the poles under the force of the electric field. Due to the small mass of electrons, their extremely high speeds, and their wide spatial distribution, it are mainly negatively charged particles that move toward the precipitation electrode. Upon reaching this electrode and being neutralized, they adhere to it first due to residual electrostatic attraction and intermolecular cohesion, and then fall along the electrode plates under the force of gravity, eventually being discharged through the tar outlet. Market advantages of magnetic control electric tar capture purification devices: 1. Magnetic control electric tar capturers have a high power factor, with COSφ ranging from 0.9 to 1, resulting in significant energy savings; they consume 30% to 50% less electricity compared to other control methods ； 2. The magnetically controlled electrostatic tar catcher employs a variable flux control circuit in its control system, which reduces the need for traditional constant current source control modules and reactors, resulting in significantly lower operating power consumption ； Its size is about 40% smaller compared to similar products; it is compact, has low operating costs, and is easy to maintain ； 3. The voltage regulation of the magnetically controlled electric tar catcher is smooth with no shocks ； A main control chip is used to regulate the conduction angle of the thyristor module via feedback signals, thereby controlling the output and achieving smooth voltage increase or decrease. This approach avoids any stress on devices such as boost transformers and electric fields, extends the service life of these devices, and ensures their safe and normal operation ； 4. The control cabinet of the magnetically controlled electric tar catcher has high sensitivity, and it automatically adjusts the voltage based on the incineration rate.