Weekly Topic (1) Discussion on Methane Synthesis Process Routes
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This post was last edited by lflsedin on 2015-8-4 08:17 from Reaction 1: CO+H2O=CO2+H2+10250 kcal/kilomole (water-gas shift)； Reaction 2: CO + 3H2 = CH4 + H2O + 49,250 kilocalories per kilomole (methanation) ； The reaction equation for 1+2 is: 2H2 + 2CO = CH4 + CO2. The advantage of this methane synthesis process is that the shift reaction and the methane formation reaction are carried out as two separate steps; the steam added helps to prevent carbon deposition, and the concentration of the recovered carbon dioxide is high. What do you think of the feasibility of this methane synthesis process?
The feasibility of this methane synthesis process route
Could you specifically explain the advantages and disadvantages compared to the traditional route?
I don’t know how the catalyst and reactor are designed.
Poor feasibility: When 1.co reacts in a 1:1 ratio with hydrogen, there is no transformation, indicating a problem with the matching of the feed gases. 2. The presence of large amounts of CO2 inhibits the progress of the methane synthesis reaction, and the process of removing CO2 at intermediate stages of synthesis is complex.
It is theoretically feasible, but the subsequent separation of methane and CO2 might be a challenge.
Why say that? What is the difficulty in separating methane and carbon dioxide?
I’m just saying that maybe gas-gas separation is ultimately not as easy as gas-liquid separation.
The main concern is to what extent the reaction depth can be achieved by doing this, and it is likely that the methane synthesis rate will not meet the required standards
It is for this reason that GCC catalysts are added to the upper layer of the methane reactor in Topso technology