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Normal driving and parking operation of the formaldehyde production equipment
- Jan 18, 2019 -

Before the normal production of formaldehyde production equipment, the preparations that need to be done are:

1. View methanol stock and formaldehyde stock;

2. Check whether the pipeline valve of the equipment is in good condition;

3. Check if the fan and pump are running normally;

4. Check whether the liquid level meter, the flow meter up and down the cork are open, and whether the liquid discharge check valve is closed;

5. Check whether the position of the valve should be closed and closed;

6. Check if each liquid level is in the normal position.

After preparation, you should follow the specific instructions:

1. When starting the blower for formaldehyde production equipment,

2. First turn the coupling to a few turns, check for obstacles, and check the oil level;

3. Confirm that there is no problem, officially turn on the fan, and notify the oxidation post to pay attention to adjust the air volume; 4. Open the methanol transfer pump, one tower and two tower circulation pump, cold water pump, etc.;

5. Turn on the cooling water (all coolers) into and out of the valve.

After the production task is completed, the formaldehyde production equipment parking operation is:

1. Gradually close the circulating exhaust valve entering the mixer and stop the circulating exhaust fan. And close all valves located on the main line of the exhaust gas cycle;

2. When the oxidation temperature is lower than 150 ° C and the air frequency is reduced to 10 Hz, the air blower is stopped;

3. Stop the methanol steam heating and close the methanol steam flow operation valve;

4. Stop the cycle of the absorption tower and stop all rotating equipment;

5, stop the exhaust gas processor, open the vent valve, close the exhaust valve;

6. Close the batching steam valve;

7. Thoroughly inspect all the valves, whether the pump is off or not, the ones that are open or not.