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Fundamentals of Purification (12)

2018-10-03View Original

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Is it better to have a lower methanol content at the bottom of the methanol water distillation tower? Why? No. This is because the lower the methanol content, the higher the bottom temperature; as a result, the thermal load on the tower increases, which leads to an increase in the water content in the methanol at the top, affecting the operation of the main washing process.
Reply #22018-10-03
No. This is because the lower the methanol content, the higher the bottom temperature; as a result, the thermal load on the tower increases, which leads to an increase in the water content in the methanol at the top, affecting the operation of the main washing process.
Reply #32018-10-03
Error: The lower the methanol content, the higher the bottom temperature, which increases the thermal load on the tower and leads to an increase in the water content in the methanol at the top, affecting the proper operation of the main washing process.
Reply #42018-10-03
Error??Because the lower the methanol content, the higher the bottom temperature becomes; this increases the thermal load on the tower, resulting in an increase in the water content in the methanol at the top, which affects the proper operation of the main washing process.
Reply #52018-10-03
No. This is because the lower the methanol content, the higher the bottom temperature; as a result, the thermal load on the tower increases, which leads to an increase in the water content in the methanol at the top, affecting the operation of the main washing process.
Reply #62018-10-03
It’s not the case that the lower, the better. At constant pressure, to achieve an extremely low methanol content in the wastewater, it is necessary to increase the operating temperature at the bottom of the water separation tower; this leads to an increase in the temperature at the top of the tower as well. As a result, the water content in the methanol vapor at the top of the tower increases, which in turn raises the water content in the methanol-rich stream.
Reply #72018-10-03
No. Because the lower the methanol content, the higher the bottom temperature becomes; this increases the thermal load on the tower, resulting in an increased water content in the methanol at the top, which affects the operation of the main washing process
Reply #82018-10-03
No. Because the lower the methanol content, the higher the bottom temperature becomes; this increases the heat load, leading to an increase in the water content in the methanol at the top, which affects the operation of the main washing process.
Reply #92018-10-03
Error??Because the lower the methanol content, the higher the bottom temperature becomes; this increases the thermal load on the tower, resulting in an increase in the water content in the methanol at the top, which affects the proper operation of the main washing process.
Reply #102018-10-03
No, because the lower the methanol content, the higher the bottom temperature becomes. This increases the thermal load on the tower, resulting in an increase in the water content in the gas phase at the top. This water is then reintroduced into the circulating methanol, reducing the dehydration capacity of the methanol-water separation tower.
Reply #112018-10-03
It’s not the case that the lower, the better. At constant pressure, to achieve an extremely low methanol content in the wastewater, it is necessary to increase the operating temperature at the bottom of the water separation tower; this leads to an increase in the temperature at the top of the tower as well. As a result, the water content in the methanol vapor at the top of the tower increases, which in turn raises the water content in the methanol-rich stream.

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