Is the use of activated carbon adsorption oil and gas recovery technology in vehicle loading safe?

We are carrying out technical exchanges in this area.

Any progress? Communicate more, :handshake

Actually, this is quite safe; there are no effective measures to avoid being within the explosive range, and that’s the case with all methods. But the adsorption process itself is actually very safe. It's sufficient to have a temperature monitoring and alarm system.

The person upstairs isn’t being objective; what does it mean that all recycling is like this! It is well known that adsorption itself is an exothermic process, involving the accumulation of heat. The concentration of oil vapor released during the loading process is variable; at the beginning of loading, the concentration of oil vapor emitted is almost 0, with almost all of it being air. As loading proceeds and the oil gradually evaporates, the concentration of oil vapor emitted increases steadily until it reaches saturation (a concentration of around 50%). During the process in which the oil and gas concentration increases from 0 to saturation, it is inevitable to pass through the explosion limit. The explosion limit for gasoline vapor is around 1.8% to 8%. When the oil and gas are within this explosion limit range, and adsorption exothermy provides additional energy, the consequences are easy to imagine. Therefore, the issue of the explosion limit is also the most troublesome problem for the adsorption method; no matter how many temperature sensors are added, such measures can only serve as a form of prevention and cannot resolve the issue at its root, as it is inherently unsafe. Methods such as absorption, membrane, and condensation do not have this problem. Feel free to communicate!

During the oil and gas recovery process, the instability of the oil and gas concentration on the suction side represents a significant safety hazard; it is difficult to ensure that this concentration remains outside the explosive range. It seems that no recovery method can avoid this issue. The adsorption process mentioned above is an exothermic reaction, and there are concerns that excessively high temperatures could lead to accidents; however, in practice, there is no need to worry about this. During normal operation, the temperature of the adsorption tower bed continuously decreases due to gas convection; it is usually around 40 degrees in summer, and even lower in winter. The temperature of the distillation tower is relatively high; the distillation temperature is generally above 100 degrees. It should be noted that adsorption and desorption are processes in which a large amount of static electricity is generated; friction between oil and gas and activated carbon fibers produces significant amounts of static electricity. Therefore, special attention should be paid to the anti-static facilities of the adsorption device. Of course, since there is a large amount of water vapor during the decomposition process, static electricity can be easily dissipated. Moreover, the presence of such a large amount of water vapor significantly alters the explosive limit of the substance, reducing it effectively. Introducing an inert gas into the inhalation pipeline to alter the explosive limit of a substance in order to prevent explosions seems to be one such method. Attempting to design a scheme for introducing nitrogen into the inhalation pipeline.

Sinopec has secured 8 more orders in the areas surrounding Beijing, all for oil and gas recovery units that use activated carbon adsorption.