One-pass conversion rate of methanol synthesis
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How is the one-pass conversion rate for methanol synthesis calculated? Are air-cooled towers the same as water bath towers?
The one-way conversion rate refers to the conversion rate of CO or CO2 from entering the reactor to exiting it. In fact, this indicator reflects the catalyst’s activity more accurately; if the one-way conversion rate is high, then the cycle ratio will be very low. If there is no alcohol separator between the air-cooled and water-cooled towers, then the one-pass conversion rate refers to the conversion rate of the gas as it passes through the two towers. If there is a separator between the two reactors, and due to the presence of bypass lines, the space-time yield should be calculated as the individual space-time yields of each reactor; of course, it can also be calculated by considering the two columns together, as long as it is clearly stated.
Calculating the volume difference between the inlet and outlet gases gives an approximate value. The conversion rate is a parameter used to assess the efficiency of the reaction in the tower; it refers to the proportion of gases that have undergone reactions, such as CO and CH3OH. The methods for calculating these conversion rates are similar
Reply to 2# workinging: Thank you for participating! How are water-cooled towers and air-cooled towers calculated? It would be helpful if there were formulas to explain this.
Reply to 3# TH373637: Thank you for the reply! So how is it calculated specifically? Do different types of synthesis towers result in different calculation formulas?
The calculation formula is the same: it assumes that the total amount of raw material is A = B + C + D, where B represents the amount of raw material used to produce the main product, C represents the amount of raw material gas used to form by-products, and D represents the amount of unreacted raw material gas. Then: Conversion rate = (B+C)/A; Yield = B/(B+C); Recovery = B/A. If calculating the one-pass conversion rate, replace the feed gas in the first formula with the amount that passes through the reactor once.
Reply to 6# TH373637: Thank you to the person above. The information I found mentions carbon conversion rate as well – how is that calculated?
Divide the amount of methanol produced by the total amount of inlet CO+CO2, expressed as a molar fraction