Questions about DAVY methanation
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In the design of large-scale units for DAVY’s main methanization process (those with a capacity of over 1 billion cubic meters per unit), two main methanization units are used, designated as #1 and #2. The process is arranged in series, with feed to unit #2 being used to increase the load later on. I would like to know why two parallel towers were not chosen instead, with their outlet temperatures controlled by recycled gas I would be very grateful if the pioneers who used this process could share their insights.
I haven’t looked at these in detail; based on experience, I would guess that it’s to avoid intellectual property disputes. In fact, there are several processes for methanation that are similar to each other, and they can all achieve the same results when used.
This method results in a relatively low volume of circulating air, as well as low power consumption for circulation
If it is merely to avoid property rights issues, then can the owners carry out technical upgrades at a later stage?
It’s best to avoid property rights issues in advance; after all, there will still be costs associated with later modifications, and no one wants to spend extra money
The second is the secondary reactor, which ensures complete reaction of carbon monoxide while keeping the carbon dioxide level within controlled limits.
Could you provide the range data for the CO2 content here? Are there any relevant text description files?
David isn’t sure; ours is synthesized with an output of below 300 ppm, and then acid is removed before liquefaction.