Hydrogen production from methanol
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Why develop hydrogen production from methanol? It takes a lot of effort to produce methanol from coal or oil through processes such as gasification, purification, synthesis, and distillation; and then hydrogen is produced from that methanol. Isn’t this result in higher energy consumption? Is it not a form of waste? In the methanol-to-hydrogen process, where does the carbon dioxide go? Does it add to the environmental burden? Industry veterans are welcome to discuss and share your opinions
Same doubts! Coal or natural gas is gasified to produce H2, CO, and CO2, which can be used directly to generate hydrogen and syngas. So why is it necessary to go through methanol to produce hydrogen? Is it because there are no gasification facilities available and only methanol as a finished product?
Yes, that’s also what I’m wondering about. In some places, coal quotas impose restrictions, but the facilities require large amounts of hydrogen, so people resort to clever workarounds
Comprehensive utilization of resources, coordinated development between the east and west. 1. Methanol is easier to transport than gas. 2. Hydrogen produced from methanol contains fewer impurities. 3. There are fewer coal resources in the eastern region. 4. The scale of hydrogen production from methanol can be adjusted flexibly, ranging from laboratory levels to larger scales
Aren’t we considering energy consumption? Will carbon emissions be higher?
Energy consumption and emissions cannot be understood in a narrow sense; they are relative concepts. Based on science, what’s practical is always the best approach. Both the synthesis of methanol and its decomposition are scientific processes. Development is the key to progress; without it, society would remain in a primitive state. In such a state, there would be no need for energy consumption, and thus no carbon emissions. In reality, however, even in primitive societies, some level of carbon emissions still occurs.
Coal is an energy source, and methanol after liquefaction is also used as an energy source. When methanol is burned directly, it produces formaldehyde and formic acid, which pollute the environment (our company has resolved this issue by using catalysts for combustion). Methanol is an energy carrier and also a hydrogen carrier. If coal could be directly converted into hydrogen, it would be convenient for storage and transportation. Reusing hydrogen produced from methanol meets environmental requirements.
Coal is not a clean energy source; hydrogen produced from methanol is a clean energy source
I have no objection to the development you mention, but this is indeed an issue related to energy consumption and carbon emissions that cannot be ignored. Since hydrogen can be produced from coal, as well as through the pyrolysis of methanol or natural gas, it is necessary to compare which process is more suitable for the current environmental requirements. Rather than considering what social development is or what primitive society is.
I really don’t think that hydrogen production from methanol meets environmental standards Is methanol part of natural gas? Does the production of methanol not cause environmental pollution? Is it reasonable to simply consider methanol-based hydrogen production without taking into account the source of the methanol?
Coal is never at fault; it’s the way it is used that is the problem. Therefore, coal cannot simply be classified as an unclean energy source. The pollution in the deep processing of coal arises because it is not utilized to the fullest extent, which is what leads to pollution.