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Oil fume removal efficiency of tubular electric tar precipitator in coal gas chemical industry by DC high voltage electric field

  • Publisher: Yan Wenhua

    Release date: August 31, 2020
  • Gas chemical tar tube type Electric tar precipitator Oil fume removal efficiency of DC high voltage electric field

    Electric tar precipitator There are three types of structures: concentric circle type, tubular type and honeycomb type. No matter what kind of structure, its working principle is to apply high-voltage direct current between the metal wire and the metal tube wall (or plate) to maintain a field sufficient to ionize the gas and form a corona area between the Yin and the Yang.

    The electric field of tubular electric tar precipitator is composed of steel pipe and corona wire separately, and its field strength voltage depends on the radius of steel pipe, and its value is 0 400R Because the electric field of tubular electric tar precipitator forms equidistant electric field in each tube section, and there is a vacancy between the tubes, which is blocked by the blind area of tube plate, which reduces the utilization rate of effective space in the cylinder and reduces the cross-sectional area of purification channel. This type of collector is easy to install because of the advantages of large electric field and steel . It is widely used in large and medium-sized gas purification plants.

    Technical scheme of tubular electric tar precipitator

    The three types of electric tar precipitator are composed of shell, precipitation, corona, upper and lower hangers, gas redistribution plate, steam purge pipe, insulation box and feeder box. The main differences are the form of precipitation, corona arrangement, insulation box and feed box( one )Concentric electric tar precipitator. It is composed of several steel plate cylinders with different diameters. The same vertical axis is the center of the circle, and the same spacing is set together to form the precipitation. Because of the same-sex repulsion between the corona, the electric field will appear small voids, that is, the field strength. In the process of trapping, the gas is easy to be trapped. At the same time, the concentric circle electric tar precipitator has high manufacturing precision and strict installation and debugging. It is easy to change concentricity, levelness and perpendicularity in manufacturing, installation and transportation, which will cause discharge between yin and yang or other parts.

    Oil fume removal efficiency of tubular electric tar precipitator in coal gas chemical industry by DC high voltage electric field

    Electric tar precipitator Principle of dust removal

      According to the theory of ionization, if a strong electric field is maintained between two metal plates to make the gas containing dust and tar mist pass through the two metal plates, the gas molecules will be ionized and produce ions with positive and negative charges When the potential difference increases, the electric field strength will increase, and the velocity and kinetic energy of ions and electrons will also increase. When ions and electrons with enough speed and kinetic energy collide with neutral molecules, new ions will be produced. When the potential difference is very high, collision ionization will occur rapidly in the electric field, making a large amount of gas separation between the two The ions meet with the particles of tar droplets And the charge is removed from the gas. The positively charged ions move to the tube wall, while the negatively charged tar particles move to the tube wall, where large droplets are formed Flow to the tar collection pipe for collection.

    Oil fume removal efficiency of tubular electric tar precipitator in coal gas chemical industry by DC high voltage electric field

    Electric tar precipitator The role of

      If the tar content in the gas exceeds the standard, it will first cause a burden on the blower, reduce the service life of the blower, and easily lead to the frequency of malignant occurrence; when the gas containing a large amount of tar mist enters the desulfurization section, the tar will adhere to the light porcelain filler of the desulfurization tower, causing equipment resistance and pollution of the desulfurization liquid, and also lead to the difficulty in producing sulfur foam in the regeneration tower, and the desulfurization liquid cannot be produced Regeneration, H2S It is saturated gradually in the desulfurizing solution and absorbed H2S If the gas passes through the ammonium sulfate section, it is easy to block the gas preheater and affect the operation. After the mother liquor is sprayed, the acid tar will stay in the saturator, causing equipment resistance, and the quality of ammonium sulfate crystallization will decline, which will hinder the absorption of ammonia in the gas. The gas from the saturator will enter the final cooling tower of the crude benzol section As a result, a large amount of benzene oil will be absorbed in the final scrubber, which will affect the quality of benzene generation oil in the final scrubber The waste of oil increases the production cost.

    Hebei Shouyang environmental protection equipment Co., Ltd. has been committed to the research, development, installation and production of environmental protection dust removal, waste gas, desulfurization and denitration engineering equipment for many years, mainly including boiler dust collector, bag filter, filter drum dust collector, cyclone dust collector, wet electrostatic precipitator, electrostatic precipitator and waste gas odor purifier. At the same time, our company produces dust collector bag and dust collector framework With the cooperation of high-tech engineers and excellent production and installation team, the company has won high praise from the industry and customers,


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