Shell coal powder transportation and slag discharge issues
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Let’s discuss what the main issues are with the coal powder transportation and slag discharge systems in Shell’s gasification units, and how these issues have been addressed
I think the area with the most problems is likely coal powder transportation; to keep the gasifier stable, a stable coal supply is a necessary prerequisite. There must be a stable flow rate and density. These require the combined efforts of process and instrumentation to ensure proper coal circulation.
It seems there are many people browsing here, but they’re not very active in contributing their opinions. If everyone shares more of their questions, people in our country will be able to avoid many detours, and sectors other than gasification will also benefit from this. Additionally, foreigners’ restrictions on us will decrease, which is something that’s very important for ** and for future generations as well. Apple once locked down and monopolized its own technology, which led to it being rejected by the market and giving Microsoft an opportunity to take advantage of the situation; this incident is indeed worth careful reflection!
The problem of slag accumulation is more common in the initial stage, as control measures are somewhat less effective at that time; coal variety stability and coal quality are also important factors. As for coal powder transportation, the situation should be a bit better now, and vibration screens play a quite important role in this process
Could you be more specific and talk about exactly what the problems and faults are?
The feeding to the Shell gasification unit is done via screw feeding, and in my opinion this does not ensure a stable feeding pressure; in other words, the screw feeding method is not suitable! It should be improved!
In many aspects, the Shell gasification unit exhibits poor stability in coal powder transportation, making it difficult to achieve stable and continuous delivery, which is a challenge in dense-phase transportation. By spiral feeding, you mean gas, not the feeding mechanism of a force-conveying device
There is very little information available on high-voltage transmission; I have also been researching this issue recently!