Suggestions for coal powder transportation in the two-stage furnaces at Xi’an Thermal Power Research Institute
Thread Content
In the two-stage furnaces at Xi’an Thermal Engineering Research Institute, nitrogen is primarily used for transporting coal powder. Is there any better method? I suggest using domestically produced gas along with a booster pump for transportation, as this helps to maintain stability in the composition of the gas
Use flammable gas as a transport gas? The original poster’s idea is a bit too bold; what if leakage leads to an explosion? Leaks in pressurized coal powder delivery systems are not uncommon either. How would you deal with that situation?
It is also feasible to use gas for transportation; the key lies in the selection of the feeding valve and the gas-locking chamber. For coal liquefaction, carbon monoxide and water vapor are generally used. Hydrogen is an active form of hydrogen before coal is liquefied, which facilitates the reaction. Therefore, using gas for transportation is not a technical issue – it depends mainly on the approach of the designers. This portion of gas is reused, which is theoretically energy-saving as well, so it deserves attention. The original poster has a great idea that deserves to be promoted
Nitrogen is used for transportation while driving; when production is stable, carbon dioxide gas can be used, which also increases the amount of effective gas
It’s absolutely unacceptable – it’s 100% dangerous. What kind of passages are there in those mines? A dust explosion can occur at any moment, not to mention those tanks and pipes; no amount of money justifies doing such things.
This post was last edited by Zhao Yuanqi on 2010-3-10 at 17:00. There is no absolute danger; decades ago, even the process of drying powder and causing it to gasify was considered dangerous. This idea is certainly bold, but the argument presented for stabilizing the composition of gas isn’t very convincing. Compared to the idea of using carbon dioxide, that approach is better for recovering carbon elements and increasing the concentration of carbon dioxide in the reaction mixture. My suggestion is to adopt the two-stage structure of the K-T furnace again
I don’t think using gas for transportation is a good idea; it’s safer to use N2 or CO2.
For gas, the corrosion issue of backflow prevention equipment also needs to be considered~~
It’s a good idea; if safety can be ensured, it could be a method worth considering. The cycle release method used during transportation may need to be changed. It seems there are still many problems with using this method for the conveying gas in the lock hoppers
Yes, how is the gas used for pressurization in the coal powder lockhopper utilized? If not utilized, thousands of cubic meters of CO will be released into the atmosphere during the next coal use! What else, security issues? Environmental protection? Efficiency?