Do you know how to choose LCM type long bag off-line pulse dust collector? Let me tell you how to choose the LCM type long bag off-line pulse dust collector.
1. Selection of filtration speed Filtration speed is a key factor in the selection of dust collectors. It should be based on the nature of the smoke or dust and the application. Dust particle size, viscosity, Gas temperature, water content, dust concentration and different filter materials and other factors to determine. When the dust particle size is fine, the temperature and humidity are high, the concentration is high, and the viscosity is high, a low value should be selected. Such as ≤1m/min; on the contrary, choose a high value, generally not more than 1.5m/min, for dust with large particle size, normal temperature, dry, non-viscous, and extremely low concentration, you can choose 1.5 ~ 2m/min. When selecting the filtration speed, it should be calculated that the net filtration wind speed should not exceed the above-mentioned value when reducing the filtration area of the chamber (during dust removal).
2. The filter material should be considered according to the temperature, water content, acid and alkali properties of the dust-containing gas, the viscosity, concentration and abrasiveness of the dust, and the size and size. - Generally, when the water content is small and there is no acidity, it is selected according to the temperature of the dusty gas. At room temperature or s 130* C, 500 ~ 550g/㎡ polyester needle felt is commonly used. When <250*C, choose aramid Nomex needle felt or 800g/㎡ glass fiber needle felt or 800g/㎡ weft double glass fiber fabric or FMS (FMS) high temperature filter material (glass fiber material cannot be used for fluorine-containing gases). When the water content is large and the dust is dense
When the temperature is relatively high, it is advisable to choose a waterproof and oil-proof filter material (or anti-condensation filter material) or a film-coated filter material (the base fabric should be needle-punched felt that has been waterproofed). when
The dusty gas contains acid and alkali and the gas temperature is 190*C, so Ryton polyphenylene sulfide (PPS) needle felt is often used. Gas temperature s 240°C. When the requirements for acid and alkali resistance are not too high, P84 (polyimide) needle felt is selected. When the dusty gas is flammable and explosive gas, use anti-static insulation fiber needle felt. When the dusty gas has a certain amount of moisture and is flammable and explosive gas, use waterproof, oil-proof, anti-static (three-proof) insulation Lun needle felt.
3. Controller LCM type long bag pulse dust collector adopts PLC microcomputer program controller for dust removal control, divided into constant pressure (automatic), timing (automatic), manual three control methods, constant pressure control: control according to the set pressure difference, The pressure difference of the dust collector exceeds the set value, and each room is automatically cleaned one by one. Timing control: according to the set time. Every other cleaning cycle, each room is cleaned one time in turn, manually controlled; on the field operation cabinet, each room can be manually controlled to automatically clean one time in turn, or each room can be cleaned separately. The control mode is selected by the user. If the user has no requirements, the supply will be controlled according to the timing.
