[Methanol Technical Version] Process Questions, July 19
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This post was last edited by qy576100527 on 2017-7-18 at 22:39. To increase the popularity of this section, daily quizzes on equipment, processes, and safety are held; the purpose of these quizzes is: \"Knowledge is acquired through accumulation.\" I hope everyone will participate actively; by learning and making progress, they can also earn wealth. How to control the temperature of the synthesis tower? 1. 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. 2. Adjust the H/C ratio. 3. Increase the amount of recycled gas. 4. Reduce the amount of fresh gas. Prize for replies: 1–3 wealth points ； Correct answer: Reward of 5-10 wealth points ； Note: Questions for that day are valid only on that day; this post is valid for 24 hours.
Control the temperature of the synthesis tower by controlling the drum pressure!
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 produce 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
The temperature of the synthesis tower is primarily controlled by adjusting the steam pressure in the drum
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The reaction temperature of synthesis is controlled by regulating the pressure of the steam system.
Generally, water-cooled systems are regulated by the pressure of the steam generated as a by-product in the synthesis tower; by adjusting the temperature at the exit of the synthesis tower, the temperature at its inlet is also adjusted. The inlet temperature of the synthesis tower is generally controlled between 210 and 230 degrees. The temperature of the synthesis tower can also be adjusted through the bypass of the inlet gas preheater.
1. Cold shock gas 2. Electric heating 3. Circulation volume 4. Cooling water 5. Feed gas 6. Pressure
1. 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 degrees℃； 2. Adjust the H/C ratio ； 3. Increase the circulation air volume.
1. Adjust the flow rate and temperature of the absorbent (rough steam and stabilized steam). 2. Improve the inlet temperature of the rich gas, paying attention to the cooling effect； 3. Adjust the mid-section return flow rate of the absorption tower ；