How to operate the multi-effect distilled water machine correctly?
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1. First open the multi-effect distilled water machine drain valve (heat source steam pipe sewage), the distillation tower drain valve, and drain the sediment and water in the heat source steam line and the effect material water line, and then close.
2. Open the cooling water control valve so that the reading of the cooling water pressure gauge reaches 0.2-0.3 MPa (according to the cooling condition, it can be adjusted below this number), and the valve handle of the condensate drain valve and the vent valve is opened 45 degrees. .
3. Open the heat source steam valve so that the pressure is between 0.3 and 0.35 MPa.
4. Press the electric lock start button to observe the water pressure of the material, which should be around 0.4~0.7MPa, then slowly open the water control valve to adjust the flow rate of the material. Observe that the water surface of the sight glass should be 1/2 of the sight glass. Below and stable, if it is higher than 1/2 of the mirror, the water valve will be closed smaller.
5. The final effect concentrated water discharge valve is slightly open. If the water level is high, the valve can be opened larger. When the temperature at the outlet of the distilled water is between 90 and 98 ° C and the temperature at the outlet of the cooling water is between 80 and 90 ° C, the machine is in normal operation.
6. The initial distillate should be discarded, and distilled water can be collected after being inspected.
7. Stop, first close the heat source steam valve, then close the start electric lock, open all the drain valve to drain the distilled water in the tower, and close the water valve.
8. If the machine is temporarily shut down, only the starting electric lock, water valve and heat source steam valve will be closed, and other valves will not move. When the steam pressure reaches 0.4 MPa, it is a large load operation. At this time, the feed water pressure can be increased to 0.5 MPa, and the concentrated water discharge valve can be appropriately closed.
9. When the steam pressure is less than 0.3MPa, it is a small load operation, then the feed water pressure can be reduced (the water level is observed at 1/2 of the sight glass at any time), and the concentrated water discharge valve can be opened appropriately.
10. The conductivity of raw material water should be less than 2〃5us/cm (resistivity should be greater than 0.4M?cm), the temperature should be about 20"C, and should not exceed 40 °C; the cooling water pressure should be 0.3~0. 4MPa, can also be adjusted to less than 0.3MPa according to the actual situation; working pressure should not exceed 0.4MPa; condensate, cooling water, concentrated water discharge pipeline must be unblocked, no blockage. Open the exhaust fan in time to eliminate indoor heat. Winter Be careful to keep the temperature of the equipment room below 0 °C and record the operation.
11. After the work is completed, fill in the equipment usage record, and carry out equipment maintenance and cleaning, and make the equipment status mark.