Methanol shutdown plan
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Methanol shutdown procedure: 1. Contact the electrician to check that the electric furnaces in each tower are ready for use. 2. Contact the dispatch team two hours in advance to reduce the system’s operation level and lower the CO% level. 3. Once the CO% level is ≤1%, activate the external bypass route; when using this bypass, be careful to control the amount of methanol released. 4. Close the inlet and outlet valves of the system. 5. Shut down the auxiliary valves of the towers. 6. Turn on the electric furnaces and open the bypass valves to control the circulation rate, thereby reducing the temperature by 40°C per hour. 7. Adjust the pressure for alcohol release to ≤0.5 MPa to ensure all methanol is removed from the system. 8. Stop the furnaces when their temperature drops to 150°C. 9. Increase the circulation rate until the furnace temperature drops to 50°C. 10. Stop the circulation pump and use water to wash out the methanol from the towers. 11. Close the main and auxiliary valves as well as the alcohol release valve. 12. Shut off the water cooling return valve. 13. Open the vent valves of the towers and those of the circulation pump; maintain a pressure of 5.0 MPa once the pressure has been reduced, with a pressure reduction rate of ≤0. 4mpa/min (Venting: Do not open it to high levels to prevent fires)
Is it methanol? How can there be a \"trace amount of purification\" in the synthesis of methanol? That phenomenon occurs only in the synthesis of ammonia. Furthermore, the furnace temperature should be maintained at 210 degrees until the carbon monoxide level is below one percent.
(1) Upon receiving the command, the compressor stops supplying fresh gas, and the circulation phase continues, allowing CO and CO2 in the circulating gas to continue reacting until (CO+CO2)
1st floor； It should be called the diol shutdown scheme