Purification Technology Edition: Daily Question [2017-11-7]
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Why can the reboiler, located outside the methanol-water separation tower and the regeneration tower, effectively transfer heat into the towers? Answer: Because of the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.
The reboiler transfers heat to the medium; after absorbing the heat, the medium returns to the tower
Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.
Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.
Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.
Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.
#Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower. #
Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.
Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.
This post was last edited by sqlzl on 11/7/2017 at 11:52. Through heat transfer, methanol is heated and turns into methanol vapor that rises continuously. Methanol liquid enters. A natural cycle is formed.
Due to the use of natural circulation heating, the tubes inside the heat exchanger are usually above the liquid level, and the temperature of the heat source is higher than the boiling point of methanol. When methanol in these tubes is heated, it continuously vaporizes and rises. Since the density of methanol vapor is much lower than that of liquid methanol, this density difference creates a driving force that causes the methanol to keep vaporizing and rising into the tower. The liquid methanol at the bottom of the tower then continues to flow into the heat exchanger where it is heated by the steam, thus establishing a natural circulation that ensures continuous heating of the methanol inside the tower.