Problems encountered during commissioning and operation of coal-methanol plant
Thread Content
Please share the problems or solutions encountered during the commissioning and operation of each methanol unit. It is best to indicate the device and the time it occurred. There are rewards! ! ! ! ! ! ! ! ! ! !
Methanol job cases I have experienced: On April 1, 2004, the temperature of methanol tower B caused an overtemperature accident in tower A. The accident: On April 1, 2004, 27 machines were produced in the night shift, two cycle machines in system B, electric furnace in system A, and methanol imported CO: 5.5% CO2: 0.21-0.3%. 4: At 38 minutes, the furnace temperature in Tower B showed a downward trend, reaching 5: Around 07, the hot spot temperature dropped from 231.6°C, and the temperature of most points in the catalyst layer dropped below 200°C. Due to the two methanol systems being connected in series, Tower B lost activity after crossing the temperature, and the temperature of Tower A surged to 5: At 30 minutes, the temperature of tower A rose to above 320°C at 7 o'clock, 5: At about 10 minutes, the post-alcohol CO increased sharply from 0.017% to 5: Trace CO rose to 57PPm in 25 minutes, synthetic cutting guide, 5: Turn off the cold air in Tower B at 10 minutes, fully open the shortcut to increase the temperature in Tower B, and the electric furnace in Tower A retreats to zero, 5: 25 separate 3# cycle machine, to 5: At 35 minutes, the temperature of the methanol B tower is normal and the dosage begins. 5: 44 minutes, the trace amount drops below 50PPm, synthetic Qi supplement, 6: The temperature of tower A drops to normal around 00, and the machine is gradually added. Cause of accident: 1. The operation is not careful and the furnace temperature changes cannot be detected and adjusted in time. 2. Failure to deal decisively and fail to take timely measures such as cutting off the machine and reducing the machine. 3. Indoor and outdoor operations are not coordinated, which delays the processing time. Accident prevention measures: 1. Improve operational responsibility, stick to your job, and adjust carefully. 2. Strengthen learning * Training to improve operational skills. 3. Strengthen on-the-job training and on-site operation drills to ensure that indoor and outdoor operations cooperate tacitly.