1. The oil fume collecting cover adopts a simple cover to collect the oil fume, and the oil fume is discharged to the outdoor through an exhaust fan. The removal rate of oil fume was 0% without purification treatment.
2. Using lye as detergent, the fume is purified by means of spraying, and then collected and discharged by exhaust fan. At present, the best products remove about 30-40% of oil fume. The oil fume removal rate does not meet the requirements of the cooking fume emission standard GB18483 -2001.
3. The purification process of the water spray scrubber adopts the way that the smoke cover is collected and sent into the absorption tower (spray, sieve plate, packing) , and then is discharged through the exhaust fan. The removal rate of oil fume is about 80-90% . The smoke removal rate meets the requirements of GB18483-2001. But the equipment installation space is big, the system is complex.
4, high-voltage electrostatic (plasma) under the use of high-pressure gas ionization and electric field forces, so that dust particles charged from the gas separation. The product has a nominal smoke removal rate of 95% . In the first week of use, the smoke removal rate was 95% in line with GB18483 -2001. After 3 months of continuous use, the smoke removal rate decreased linearly to zero. If you need to ensure that the fume purification effect, and fume removal rate up to the standard, must be cleaned every two weeks, a professional electrostatic fume purifier cleaning service company on behalf of the cost of each 1000-5000 Yuan. If not cleaned according to the standard, the oil accumulation in the smoke exhaust pipe is serious and the risk of fire is great.
5, physical filter screen, activated carbon, one of steel wire or several composite. The oil fume removal rate of this kind of products is actually 20-30% , when used alone can not meet the requirements of GB18483-2001. Easy to jam, need weekly cleaning.
6. Photocatalytic decomposition of oil mist by ultraviolet light. The smoke removal rate of this product can reach 90% , in line with GB18483-2001 requirements, the premise is to need at least 30 meters of pipe, easy to install UV light. At present, only the imported UV light tube can guarantee the reliability and durability of the product. The disadvantage is that UV light carcinogenic, must be sealed tight, leakage, there is no benefit to everyone. Right, a little leakage can sterilize, disinfection.
7. Biological purification the oil mist in oil fume was decomposed and purified by oil-loving microorganism. The smoke removal rate of this product can reach 90% , in line with GB18483-2001 requirements. A dedicated microbial pool is required, and microbial metabolism needs to be treated regularly for renewal. This treatment is the most environmentally friendly.
8. Liquid-foam scrubbing uses a combination of physical and chemical processes based on the two-film theory of mass transfer. A mechatronics engineering product, strictly speaking, should not be called a fume purifier. It is more reasonable to call it a fume purifier. The smoke removal rate of this product can reach 90% , in line with GB18483-2001 requirements. Special purifying agent is used to improve the power of double-film mass transfer between gas-liquid two-phase, which can quickly capture particles such as oil fume in the gas phase At the same time, a 600mm thick liquid foam layer (1.5 mm in diameter) generated by the negative pressure of its own fan is used to carry out a washing-type purification of oil fume gas. The purification effect is equivalent to about 600 meters of natural rainfall. The removal rate of oil in oil fume is 90% , the removal rate of black smoke particles is 90% , the removal rate of impurities such as dust in air is 90% , the removal rate of all kinds of odors is 70% , the removal rate of blue smoke (chemical gel) is 60% . Products need to use every 2-3 days to do a sewage, add professional purifying agent work. The product is stable in operation, long in service life and super-grade fire-proof.
