When the Formaldehyde Production Silver Process suddenly
loses power during production, how to deal with it, the power outage is divided
into all power outages and partial power outages.
It is necessary to take measures for the specific causes and locations of
power outages.
Generally there are the following treatment methods:
All power outages
Formaldehyde Production Silver Process
Fans and pumps should be completely stopped. Pay attention to "tempering".
For the air and methanol mixed evaporation process, it is necessary to prevent
the methanol from being pressed down to the blower.
1 The oxidizer is equipped with a bypass valve that should be opened
immediately, and the positive valve is closed to protect the catalyst;
2 Immediately close the air and exhaust blower outlet valve to prevent
methanol from being pressed down;
3 The evaporator is heated by steam to close the heating valve;
4 close the batch steam valve;
5 Stop the absorption tower and add water to stop the formaldehyde
production;
6 Close the methanol into the evaporator valve and the methanol gas into
the system valve;
7 Turn off the auto maintenance steam valve to maintain the oxidation
boiler pressure and liquid level;
8 Quickly contact the power supply department to resume production this
morning. If the power supply cannot be restored within a short period of time,
press the emergency stop.
Partial power outage
1 air blower power failure
a. Immediately open the oxidizer bypass valve, close the positive valve to
protect the catalyst;
b. Immediately stop adding tail gas, methanol, batch steam, top water and
formaldehyde to protect the aerobic temperature;
c. If the standby machine starts to resume production immediately, the
process of evaporating methanol directly into the system must wait for the
oxygen temperature to drop below 150 °C to reorganize the drive. If production
cannot be resumed at one time, it is handled by the emergency stop method.
2 exhaust gas circulation fan power failure
a, rapidly reduce the amount of air, maintain the oxidation
temperature;
b. Adjust the oxygen to alcohol ratio and the concentration of the
ingredients to maintain production;
3 methanol pump, boiler pump, methanol circulation pump power failure
a, immediately start the standby pump to resume production;
b. Pay special attention to the liquid level of the evaporator, absorption
tower and boiler during the treatment. If it cannot be recovered at one time, if
it cannot be maintained, it will be treated according to the emergency stop
scheme.
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