【Production Version】Daily Question 2018-6-2 (Short Answer)

Answer: The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the steam drum. At around 4.0 Mpa, a change of 0.1 Mpa in steam pressure results in a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis steam drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst. When the methanol production or the pressure difference in the synthesis tower cannot be maintained above the specified values even by adjusting temperature, pressure, and space velocity, it is necessary to shut down the plant to replace the catalyst.

The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum; at around 4.0 Mpa, a change of 0.1 Mpa in steam pressure corresponds to a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst. When the methanol production or the pressure difference in the synthesis tower cannot be maintained above the specified values even by adjusting temperature, pressure, and space velocity, it is necessary to shut down the plant to replace the catalyst.

The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum. At around 4.0 Mpa, a change of 0.1 Mpa in steam pressure results in a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst. When the methanol production or the pressure difference in the synthesis tower cannot be maintained above the specified values even by adjusting temperature, pressure, and space velocity, it is necessary to shut down the plant and replace the catalyst.

The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum; at around 4.0 Mpa, a change of 0.1 Mpa in steam pressure corresponds to a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst. When the methanol production or the pressure difference in the synthesis tower cannot be maintained above the specified values even by adjusting temperature, pressure, and space velocity, it is necessary to shut down the plant to replace the catalyst.

The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum; at around 4.0 Mpa, a change of 0.1 Mpa in steam pressure corresponds to a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst. ...

The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum

The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum; at around 4.0 Mpa, a change of 0.1 Mpa in steam pressure corresponds to a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst.

Answer: The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the steam drum. At around 4.0 Mpa, a change of 0.1 Mpa in steam pressure results in a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis steam drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst. When the methanol production or the pressure difference in the synthesis tower cannot be maintained above the specified values even by adjusting temperature, pressure, and space velocity, it is necessary to shut down the plant to replace the catalyst.

Among the process parameters of the methanol synthesis reaction, temperature has a significant impact on both the chemical equilibrium of the reaction mixture and the reaction rate. From the perspective of chemical equilibrium, lower temperatures are favorable for methanol yield, while higher temperatures are beneficial for the reaction rate. To determine an appropriate temperature, it is necessary to take into account the properties of the catalyst as well. The reactions of CO and CO2 with H2 to form methanol are both reversible exothermic reactions. Therefore, although an increase in temperature raises the reaction rate constant, it reduces the value of the equilibrium constant. As a result, when the composition of the reaction mixture remains constant and the temperature is changed, the reaction rate is influenced by these two opposing factors.

The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum; at around 4.0 Mpa, a change of 0.1 Mpa in steam pressure corresponds to a temperature change of approximately 1.35°C. Using the steam pressure in the synthesis drum to control the tower temperature is both simple and reliable. The temperature of the synthesis tower is generally adjusted appropriately depending on the usage time of the catalyst. When the methanol production or the pressure difference in the synthesis tower cannot be maintained above the specified values even by adjusting temperature, pressure, and space velocity, it is necessary to shut down the plant to replace the catalyst.