HEBEIOUTAI ENVIRONMENTAL PROTECTION EQUIPMENT CO.,LTD

  The high-temperature dust collector bag is formed by padding, pre-baking, and baking treatments of needle-punched nylon with hydrophobizing agent and oleophobic agent. After the hydrophobizing agent and oleophobic agent are quickly dried, they are attached to the surface of the filter material fiber in a net shape, thereby reducing the surface tension of water and oil and the filter bag, so that the wet filter medium formed by water, oil and dust will not adhere to the surface of the filter bag, thus avoiding the bag sticking phenomenon.   During the operation of the bag filter, the high-temperature dust collector bags   contain more moisture and oily, hygroscopic and deliquescent dust in the gas, and it may generate water or oil film on the surface of the dust to increase adhesion, which can help capture dust, but will make cleaning difficult. Especially when the high temperature gas is in a high humidity state, condensation will occur due to the cooling effect of the outside air. T

  1. The characteristics of metal fiber high temperature dust collector bags   The metal fiber high temperature dust collector bag is made of micron-sized metal fiber sintered filter material as raw material, and is welded. The metal fiber sintered felt filter medium is composed of a three-layer composite of metal plate mesh, coarse metal fiber and fine metal fiber. Vacuum sintered into a whole to form a three-dimensional network structure.   High temperature dust collector bags   have the characteristics of high porosity, large specific surface area, uniform pore size distribution, high dirt holding capacity, and high filtration accuracy. In addition, it has high temperature resistance, corrosion resistance, high efficiency, low emission concentration, low operating resistance, long life, renewable, energy saving and other advantages, with excellent filtering performance, which is ideal high-temperature flue gas dust removal filter material, and has been widely used in industrial smok

  Ⅰ . Introduction of standard single-layer felt filter bag   Industrial polypropylene (PP) and polyester (PE) standard felt filter bags, single-sided slip surface to prevent fiber migration, gradient pore deep filter type, no internal support layer. Use nearly 30 kinds of fibers with different diameters, and use fiber mixing equipment to make filter bags.   Ⅱ . Features of standard single-layer felt filter bag   1. Stitching method: ultrasonic welding or thread suture.   2. Sealing ring: polypropylene and polyester SDS, STS, galvanized steel ring or stainless steel ring.   3. Sealing ring connection method: ultrasonic welding or thread stitching.   4. Accuracy range: 1, 3, 5, 10, 25, 50, 75, 100, 150, 200 microns.   5. Efficiency: relative accuracy, single filtration efficiency is 85%.   6. Surface treatment: Smooth surface treatment to prevent fiber and leachate from freeing.   7. Material grade: fully comply with FDA grade requirements, free of silicon and other types of pollutants.

  Bag filter is a kind of multi-purpose filtering equipment with novel structure, small size, simple and flexible operation, energy saving, high efficiency, airtight work and strong applicability. Bag filter is a new type of filtration system. Inside the bag filter, the filter bag is supported by a metal mesh basket. The liquid flows in from the inlet and flows out from the outlet after being filtered by the filter bag. Impurities are intercepted in the filter bag and can be used continuously after replacing the filter bag.   Working principle of bag filter   Here is the bag filter working principle : The bag filter has many advantages such as reasonable structure, good sealing, strong circulation performance, and easy operation. In particular, the probability of side leakage of the filter bag is small, the filtering accuracy can be correctly guaranteed, and the filter bag can be changed quickly, which reduces the operating cost. The inner and outer surfaces of the filter are solved by

  1. Introduction of electrostatic dust precipitators   The power supply of the electrostatic precipitator consists of a control box, a step-up transformer and a rectifier. The output voltage of the power supply also has a great influence on the dust removal efficiency. Therefore, the operating voltage of the electrostatic precipitator must be maintained at 40-75kV or even above 100kV.   2. Basic structure of electrostatic dust precipitators   The electrostatic dust precipitators  are composed of two parts: one part is the main system of the electrostatic precipitator; the other part is the power supply device that provides high-voltage direct current and the low-voltage automatic control system. The high-voltage power supply system supplies power to the step-up transformer, and the dust collector of the dust collector is grounded. The low voltage electric control system is used to control the temperature of the electromagnetic vibrating hammer, the ash discharging electrode, the ash c

  1. Selection principle of cyclone type dust collector   ① The amount of gas purged by the cyclone type dust collector should be consistent with the amount of dust-containing gas that needs to be treated. The diameter of the cyclone type dust collector should be as small as possible. If the required air volume is large, it is advisable to use several small diameter cyclones in parallel. 　　   ② The inlet wind speed of the cyclone dust collector should be maintained at 18~23m/s. When it is too low, the dust removal efficiency will decrease: when it is too high, the resistance loss and power consumption will increase, and the dust removal efficiency will not increase significantly. 　　   ③ The selected cyclone type dust collector  has small resistance loss, low power consumption, simple structure and easy maintenance. 　　   ④ The smallest dust particles that can be captured by the cyclone type dust collector should be slightly smaller than the dust particle size in the gas to be processed.

  Ⅰ . The measures that the baghouse dust collection system needs to take to deal with special dust   1. Gas with high dust concentration   To process gas with high dust concentration, cyclone dust collector or gravity dust removal equipment can be installed as pre-dust removal, but this will increase the resistance of the system and increase the power consumption. Therefore, when the dust or finished materials do not need to be classified, most of them directly use bag dust collector.   2. Dust-containing gas containing tar mist   It is difficult to deal with gas containing only tar mist by baghouse dust collection system . However, when the oil mist in the gas is not large and the amount of dust is considerable, it can be directly filtered. For example, in an asphalt concrete plant, the flue gas from the stone dryer is the main source, plus dust from the conveyor and other exhaust gases enter the equipment. In addition, the tar mist generated by the heated asphalt concrete also enter