1. Check whether the parts and foundation bolts of the equipment are loose, whether the reducer and the transmission mechanism need to be lubricated, and whether the vacuum pump and the filtrate pump are reversed. 2. Check whether the spindle, vacuum pump, pneumatic valve, ultrasonic power supply is hot or has abnormal sound, and whether the dilute acid pump and auxiliary equipment are normal. Second, the operating regulations: 1. The concentration of the slurry of the filter is controlled at ≥55%, and the level of the concentrate in the tank is kept within the range of 2-10 mm below the overflow. 2. The pulp pH must be controlled at 7.0-7.2 and measured once every hour. 3. The filtration vacuum is controlled at -0.093~-0.100Mpa, the backwashing pressure is controlled at 0.06~0.10Mpa, the stirring in the tank is controlled at 9-14 rpm, and the spindle speed is adjusted according to the water content of the filter cake. 4. The humidity of the residence slurry is controlled between 30-40 degrees. It is strictly forbidden to have steam in the retention tank. 5. Ensure the filtration and drainage of vacuum pumps, drain tanks, filtrate pumps, and automatic drains. 6. It is strictly forbidden to change the monitoring and management functions of the control system (upper and lower). If you want to change it, you can do it under the guidance of the technician. 7. When checking the cylinder, air line pipe and air hole components, cut off the pressure air source. Third, the cleaning regulations: 1. The ceramic plate is cleaned once every 8 hours, and the cleaning time is 1 hour. The nitric acid is cleaned while ultrasonic cleaning, and the acid amount is continuously added. 2. The ceramic plate is cleaned once every 72 hours with oxalic acid. The oxalic acid is cleaned with nitric acid before cleaning. The total cleaning time is 5 hours, of which oxalic acid cleaning and ultrasonic cleaning are 4 hours, and the rest is clear water. 3. Make sure that the semi-circle is clean when the ceramic plate is cleaned. 4. The temperature in the oxalic acid irrigation and oxalic acid immersion tank is controlled at 60-70 degrees; the temperature of oxalic acid in the cleaning semi-circular tank is controlled at 50-60 degrees; the liquid acid level in the semi-circular groove of the filter is controlled between 800-820 mm. 5, ultrasonic cleaning temperature should be less than 60 degrees, and the cleaning box all into the water, by the designated person or technical staff, and often check the filtrate pump sealed box deterioration. 6. The pressure difference between the vacuum zone and the backwash zone should not exceed 2.0 bar, and the backwash pressure should not exceed 1.1 bar. Fourth, other regulations 1. Ultrasonic transducers are strictly prohibited from entering water, damp and vibration, impact, and water shortage. 2, ultrasonic power supply and ultrasonic box have high pressure, can not be damp and corrosion, can not have dust into the chassis, non-professionals do not move. 3. When parking, the pressure of each branch should be reduced to zero, and the total gas source should be turned off. It is strictly forbidden to turn off the total gas source. 4. When the control cabinet is in the parking period, it must be locked to ensure safety. 5, do a good job in regional hygiene, keep indoor fresh air unblocked, make a good record, explain the operation of each equipment to the successor during the shift. A Heat Exchange Unit is composed of a heat exchanger, a temperature control valve group, a drain valve group (when the heat medium is steam), a circulating pump, an electrical control cabinet, a base, pipelines, valves, instruments, etc. It can also be equipped with expansion tanks, water treatment equipment, variable frequency control of water pumps, temperature control valves, remote communication control, etc., thus forming a complete heat exchange station. Integrated Heat Exchange Unit,Plate-Finheat Exchange Unit,Domestic Heat Exchange Unit,Heat Exchange Ventilation System Siping Juyuan Hanyang Plate Heat Exchanger Co., Ltd , https://www.tj-heatexchange.com
Safety operation procedures for ceramic filter of concentrator
First, preparation before starting