How much feed gas is required to produce one ton of methanol? How much fresh air? How to calculate it?

Average fresh gas per hour/Average methanol production per hour = Fresh gas/ton of methanol； Average hourly raw gas output/Average hourly methanol output = Feed gas/ton of methanol

There are many of these on the internet; you can give it a search! Theoretical calculations are derived from H2 and CO as raw materials, based on the simple molecular formula of methanol; for greater accuracy, the content of CO2 can also be taken into account. Of course, this is based on ideal conditions – in reality, the conversion efficiency is not such, so a conversion rate needs to be considered. When calculated based on the actual feed and methanol production, it is prone to being affected by flow rate fluctuations!

Thank you for the answer from above!!!!!!!!

If the raw material components are of good quality, based on empirical data, about 1860 Nm3 is required to produce one ton of methanol.

In reality, it’s around 2000–2200; if the intermediate stream is recovered, the volume can be reduced by 50 cubic meters. Compared to ammonia synthesis, this involves gaseous hydrogen and carbon monoxide, whereas ammonia synthesis involves nitrogen gas.

How much raw material is needed for one ton of methanol? In methanol synthesis, the ratio of CO to H2 follows this formula: (H2 – CO2)/(CO + CO2) = 2.05; this is generally the case. There are also those that keep the ratio at 2.15. According to theoretical calculations, producing one ton of methanol requires 2,100 cubic meters of effective gas (CO+H2), while producing one ton of ammonia requires 1,900 cubic meters of effective gas ； As for coal consumption, there are many influencing factors; coal quality, process parameters, load, operating conditions, and so on all have an impact, with a theoretical value of 1.3 tons of standard coal. For pressure vaporization and low-pressure monohydric alcohol processes, the consumption to produce one ton of methanol is 2250 Nm3 of refined gas. The coal consumption is around 1.5 tons. In the diol or dimethyl (alcohol alkylation) system, the consumption to produce one ton of methanol is 2800 Nm3 of refined gas. Generally, 2250 Nm3 of (CO+H2) is required to produce one ton of methanol. Assuming an effective gas content of 88% in the raw gas used for SHELL’s powder gasification (a somewhat conservative figure), the amount of raw gas needed per ton of methanol produced is 2557 Nm3. Shell’s furnaces use CO2 as the carrier gas, and 2200 Nm3 of effective synthesis gas (CO+H2) is required per ton of methanol.