generally speaking, the oil consumption coefficient of edible oil in \x1d\ general canteens is 7kg/111 people *d\x1d\ and the volatile amount of oil fume and oil accounts for 2%~4% of the total oil consumption, so it can be revised \x1d\ or better calculated if the builder can provide relevant parameters \x1d\ generally, an oil fume purifier is installed and operated well. X1d\ Send an example for your discussion: \x1d\ The kitchen of this project, which has just built a catering industry, has four cookers. According to the Cooking Smoke Emission Standard for Catering Industry (GB18483-2111), it belongs to a medium-sized catering industry, and the average consumption of edible oil is 1.13kg/ person. If the number of diners is 21 employees and the daily passenger flow is 411, the daily fuel consumption is 12.6kg/d and the annual fuel consumption is 4.54 t/a.. \x1d\ According to the analogy investigation, the smoke concentration and volatile amount in the oil smoke are different under different burning and frying conditions, and the average volatile amount of oil is 2.83% of the total oil consumption. After accounting, the oil fume output of this project is 1.36kg/d, and the annual oil fume output is 1.131t/a.. If the cooking time is 7h/d, the amount of oil fume discharged by this project is 1.151kg/h, and the oil fume emission concentration is 2.55mg/m3 (calculated by air volume of 21,111 m3/h). Exceeding the standard limit requirement of the maximum allowable emission concentration of oil fume of 2.1mg/m3 in the Emission Standard of Oil Fume for Catering Industry (GB18483-2111), if it is directly discharged, it will have an impact on the surrounding environment. It is suggested that two sets of electrostatic oil fume purification equipment be used to purify the oil fume, and the purification efficiency is 91%. After purification, the oil fume emission concentration is 1.26mg/m3 and the emission is 1.113 t/a..