Methanol Technical Version Daily Question (Short Answer) [2018-1-30]
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Reasons for excessive water content in refined methanol product and solutions? Reasons: ① Cooler leakage; ② Low reflux ratio and high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Elevated temperatures in various layers; ⑤ Low pressure at the tower top. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat added to the reboiler as well as its pressure; ④ Reduce the temperatures in each layer to normal levels; ⑤ Direct the output to the crude alcohol tank, and transfer it to the refined alcohol tank once it meets the required standards.
Reasons: ① Cooler leakage; ② Low reflux ratio and high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Elevated temperatures in various layers; ⑤ Low pressure at the tower top. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat supplied to the reboiler as well as its pressure; ④ Reduce the temperatures in each layer to normal levels; ⑤ Direct the output to the crude alcohol tank, and transfer it to the refined alcohol tank once it meets the required standards
Reasons: 1. Leakage in the cooler; 2. Low reflux ratio resulting in high reflux temperature; 3. High flow rate or pressure of the heat source in the reboiler; 4. Elevated temperatures in various layers; 5. Low pressure at the tower top. Solutions: 1. Repair the internally leaking heat exchanger; 2. Increase the reflux rate and lower the temperature of the reflux liquid; 3. Control the amount of heat supplied to the reboiler as well as its pressure; 4. Reduce the temperatures in each layer to normal levels; 5. Direct the output to the crude alcohol tank, and once it meets the required standards, transfer it to the refined alcohol tank.
Reasons: ① Cooler leakage; ② Low reflux ratio and high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Elevated temperatures in various layers; ⑤ Low pressure at the tower top. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat added to the reboiler as well as its pressure; ④ Reduce the temperatures in each layer to normal levels; ⑤ Direct the output to the crude alcohol tank, and transfer it to the refined alcohol tank once it meets the required standards.
①Cooler leakage: ② Low reflux ratio, high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Elevated temperatures in each stage; ⑤ Low pressure at the top of the tower. Solutions: ① Repair the heat exchanger with internal leakage; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat supplied to the reboiler as well as its pressure; ④ Reduce the temperatures in each stage to normal levels; ⑤ Direct the output to the crude alcohol tank, and transfer it to the refined alcohol tank once it meets the required standards.
This post was last edited by renchy2000 on 2018-1-30 09:16. Reasons: ① Cooler leakage; ② Low reflux ratio resulting in high reflux temperature; ③ High flow rate or pressure of the heat source for the reboiler; ④ Abnormally high temperatures in various layers; ⑤ Low pressure at the tower top. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate to lower the temperature of the reflux liquid; ③ Control the amount of heat supplied to the reboiler as well as its pressure; ④ Reduce the temperatures in various layers to normal levels; ⑤ After the crude alcohol in the outlet tank meets the required standards, it should be transferred to the refined alcohol tank.
Reasons: ① Cooler leakage; ② Low reflux ratio and high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Abnormally high temperatures in various layers; ⑤ Low pressure at the tower top. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat input and the pressure in the reboiler; ④ Reduce the temperatures in various layers to normal levels; ⑤ Direct the output to the crude alcohol tank, and transfer it to the refined alcohol tank once it meets the required standards.
Reasons: ① Cooler leakage; ② Low reflux ratio and high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Elevated temperatures in various layers; ⑤ Low top pressure of the tower. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat supplied to the reboiler as well as its pressure; ④ Reduce the temperatures in various layers to normal levels
Reasons: ① Cooler leakage; ② Low reflux ratio and high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Elevated temperatures in various layers; ⑤ Low pressure at the tower top. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat added to the reboiler as well as its pressure; ④ Reduce the temperatures in each layer to normal levels; ⑤ Direct the output to the crude alcohol tank, and transfer it to the refined alcohol tank once it meets the required standards.
Reasons: ① Cooler leakage; ② Low reflux ratio and high reflux temperature; ③ High flow rate or pressure of the heat source in the reboiler; ④ Elevated temperatures in various layers; ⑤ Low pressure at the tower top. Solutions: ① Repair the internally leaking heat exchanger; ② Increase the reflux rate and lower the temperature of the reflux liquid; ③ Control the amount of heat added to the reboiler as well as its pressure; ④ Reduce the temperatures in each layer to normal levels; ⑤ Direct the output to the crude alcohol tank, and transfer it to the refined alcohol tank once it meets the required standards.
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