What are the classifications of dust removal equipment

(1) Mechanical force dust removal equipment including gravity dust removal equipment, inertia dust removal equipment, centrifugal dust removal equipment and so on. (2) washing dust removal equipment including water bath dust removal equipment, foam dust removal equipment, venturi dust removal equipment, water film dust removal equipment. (3) Filtering dust removal equipment including bag dust removal equipment and particle layer dust removal equipment. (4) Electrostatic dust removal equipment. (5) Magnetic dust removal equipment. Mechanical inertia dust removal equipment is to make dusty gas and baffle impact or sharp change in the direction of the gas flow, the use of inertial force separation and capture dust dust removal equipment. Inertia dust removal equipment is also called inert dust removal equipment. Inertial dust removal equipment is divided into collision and rotary two kinds: the former is installed along the direction of the gas flow one or more baffles, dusty gas collision to the baffle so that the dust particles from the gas to separate out. Obviously, the higher the speed of the gas before hitting the baffle, the lower the collision, the less dust is carried, the higher the dust removal efficiency. The latter is to make the dusty gas change direction several times, and separate the dust out during the steering process. The smaller the radius of curvature of the gas steering. The higher the steering speed, the higher the dust removal efficiency. The performance of inertial dust removal equipment varies depending on the structure. When the gas flow rate in the equipment is 10m/S or less, the pressure loss is between 200 and 1000 Pa, and the dust removal efficiency is 50% and 70%. In practice, inertial dust removal equipment is generally placed in the first stage of the multi-stage dust removal system, used to separate the coarser particles of dust. It is especially suitable for capturing dry dust with particle size larger than 10μm. It is not suitable for removing adhesive dust and fibrous dust. Inertial dust removal equipment can also be used to separate droplets, which requires the gas flow rate in the equipment to 1-2m / s is appropriate. Bio-nerve film bio-nerve film dust removal equipment is in recent years in foreign countries began to rise in the dust removal equipment, the use of today's more advanced bio-nerve film technology, through the BME nano-film sprayed on the surface of the material, to a large extent, to inhibit the material in the production and processing process to produce dust. This kind of dust removal technology belongs to dust removal before dust emission, compared with other dust removal after production, has a great advantage, so that in the whole process of material production, can effectively control the emission of dust. The dust produced in the crushing process are gathered into fine materials, and finally become finished materials, can increase the output of 0.5%-3%, in addition to the effective prevention and control of PM2.5, PM10 pollution, in line with the relevant national environmental protection and energy saving and emission reduction technology policy. Compared with wet type dust removal and bag type dust removal, biological nano-film dust suppression has no water pollution, the preparation will not have side effects on the environment, does not affect the quality of the finished material, the input cost is low, applicable to mines, construction, quarries, stockpiles, harbors, coal-fired power plants, iron and steel factories, garbage recycling and processing and other places in the treatment of dust pollution. Nano-film dust removal has been used in different applications overseas, and has gradually begun to be applied in many provinces and cities in China. Wash spray dust removal equipment is in the dust removal equipment water through the nozzle sprayed into a mist, when the dust-containing fumes through the mist space, due to the collision between the dust particles and droplets, interception and cohesion, the dust particles with the droplets to land down. This kind of dust removal equipment is simple in structure, less resistance and easy to operate. Its outstanding advantage is that the dust removal equipment is equipped with very small gaps and orifices, which can handle flue gas with high concentration of dust without causing clogging. And because it sprays coarse liquid droplets, so there is no need for fog nozzles, so that the operation is more reliable, Jetlin type dust removal equipment can use recycled water until the wash liquid in the particulate matter to reach a fairly high degree, thus greatly simplifying the water treatment facilities. So this kind of dust removal equipment is still used by many enterprises. Its disadvantage is that the volume of equipment is relatively large, the ability to deal with fine dust is relatively low, the amount of water required is relatively large, so it is often used to remove dust particle size, dust concentration of high flue gas. Commonly used spray dust removal equipment in accordance with the gas and liquid in the dust removal equipment flow type is divided into three structures: (1) downstream spray type, that is, the gas and water droplets flow in the same direction. (2) Countercurrent shower, that is, the liquid against the gas jet. (3) Staggered flow spray, that is, in the direction perpendicular to the airflow spray liquid. Aerosol aerosol dust removal has changed the traditional sense of the spray dust removal equipment caused by the relatively large volume, low dust removal capacity, water consumption shortcomings, greatly improving the effectiveness of dust removal. System technology principle. The implementation of gravity dust reduction and water mist pressure dust, through the pressure of the liquid and gas transported to the nozzle, the liquid and gas mixed at the nozzle to produce fine atomized droplets sprayed outside the nozzle, thus producing a diameter of 1 μm-10 μm very small water mist particles, suspended in the air for effective adsorption of dust, rapid cohesion into particles by gravity and deposited to achieve the purpose of suppressing dust and improve the environment. The system has a good atomization adjustment function, can be adjusted by changing the pressure of the gas and liquid to adjust the atomization device, so as to achieve the ideal ratio of gas flow rate and liquid flow rate, to provide micro-fine droplet size of the spray. Electric dedusting electric dedusting equipment is a necessary supporting equipment for thermal power plants, its function is to remove particles of soot in the flue gas emitted from the combustion stove or oil-fired boiler, thus significantly reducing the amount of soot discharged into the atmosphere, which is an important environmental protection equipment to improve environmental pollution and improve air quality. Its working principle is that the flue gas passes through the flue in front of the main structure of the electrostatic precipitator, so that the soot is positively charged, and then the flue gas enters the electrostatic precipitator channel with multi-layer cathode plate. Due to the mutual adsorption effect of positively charged soot and cathode plate, the particles of soot in the flue gas are adsorbed on the cathode, and the cathode plate is struck at regular intervals, so that the soot with a certain thickness will fall down under the dual effect of self-weight and vibration in the ash hopper below the structure of the electric dedusting equipment, so as to achieve the purpose of removing the soot in the flue gas. As the thermal power plant unit power is generally larger, such as 600,000 kilowatts unit, the hourly coal combustion amount of 180T or so, the amount of soot can be imagined. Therefore, the corresponding electric precipitator structure is also relatively large. General thermal power plants use the main structure of the main structure of the electric precipitator cross-section size of about 25 ~ 4010 ~ 15m, if you add 6 meters of the height of the ash hopper, as well as the density of the smoke transport space, the entire electric precipitator height are more than 35 meters, for such a huge steel structure of the main body, not only need to consider the autonomy, soot loads, wind loads, seismic loads under the action of static and dynamic analysis. At the same time, the stability of the structure must also be considered. The main structure of the electrostatic precipitator is a steel structure, all welded by the section steel, the outer surface covered with skin (thin steel plate) and thermal insulation materials, in order to design and manufacture and installation of the convenience. The structural design adopts a layered form, each piece consists of a number of main beams in a frame, and the pieces are connected with each other by large beams. In order to install the skin and insulation layer needs, between the main beam welding secondary beam, for such a huge structure, how are connected in kind, its workload and the number of units will be very large. According to the actual design requirements of the project and the design of the main structure of the electrostatic precipitator equipment, it mainly examines the structural strength, structural stability and the large displacement of the main beam of the suspended cathode plate. For the local area, it mainly examines the fatigue damage of the connection between cathode plate and main beam in the long term undergoing cyclic strikes; the very good frequency selection of soot shedding on the cathode plate; the very good selection of the structural surface skin (thin plate) under the action of wind load and the connection of main and secondary beams as well as the stiffness between them and so on.2 For more information, you can consult with Jiangsu Leiwardke Environmental Protection Science and Technology Co, Ltd, thank you!