What are the advantages of U-gas gas generation furnaces?
Thread Content
Some companies are now promoting U-gas in China, and not many people are aware of this type of furnace. I would like to know what the current operating conditions for these gas generation furnaces are like This gas generator is not suitable for low-sulfur bituminous coal; how much can be mixed in?
The U-Gas gasification furnace utilizes the principle of ash agglomeration for reactions and ash discharge. In such a gasification furnace, it is allowed for the parts of the ash with lower melting points to melt first, thereby bonding together the other unmelted ash and forming agglomerates. The advantage of this process is that it does not require melting all of the ash, and it does not demand high fluidity from the ash residue. The ash from this type of gasification furnace causes less environmental pollution than the ash from pure dry ash discharge.
Oh, I heard that there are places where gray pyrolysis and SES’s U-GAS share similar names; I didn’t expect that to be the case. But currently, gray pyrolysis isn’t working well. How is U-GAS then? :(
I heard that it works fairly well. There is one unit in operation in China, located in Shandong, but it is currently shut down because the back-end system no longer requires gas, following a partnership with Haihua. The specific details are unknown.
The so-called ash agglomeration gasification involves forming agglomerates with low carbon content from ash within the furnace, which are then discharged; the carbon conversion rate can reach over 96%. This gasification method enables desulfurization within the furnace, with an efficiency of 89%–90%, allowing the gas to be used as fuel coal without the need for further desulfurization. Typical furnace types include the U-Gas gasification method and the KRW pressurized fluidized bed gasifier. In 1994, the world’s first U-Gas gasification industrial plant was built at the Shanghai Coking Plant.
According to the available data, the U-GAS furnaces in Shanghai perform poorly, and those in Shandong don’t seem to perform very well either; compared to other types of furnaces, they have no advantages at all:time:
The U-GAS produced by Shanghai Coking cannot really be described as \"poor\". I think calling it a “failure” is more accurate. Of course, those spectacular installations from back then no longer exist. In comparison, Shandong’s U-GAS is much more successful.
That’s indeed the case; those “outposts” in Shanghai no longer exist. I thought they were still there. It seems that the U-GAS furnaces have never been able to burn coal properly – they keep using low-quality coal for burning, which makes it meaningless to compare anything. I really don’t understand why he doesn’t try using better quality coal so that we can have some basis for comparison. So I wanted to get information about the furnaces in Shanghai, but now there’s nothing to do about it:time:
Features of U-GAS: 1. High gasification efficiency; under the same conditions, the production capacity per unit can reach 3 to 5 times that of a fixed-bed system. 2. It provides good environmental protection, as the gas contains no oil, phenols, or similar substances, and S is converted to H2S, thus avoiding environmental pollution. 3. High carbon conversion rate
This is only true for fixed-bed reactors; it is they that achieve a higher conversion rate of fixed carbon. It doesn’t apply in the case of pressurized gasification! Also, there are no comparable data available for systems that are currently operating stably. As for the gasification intensity, well, is the amount of effective gas per unit area higher in pressurized gasification?
It seems that those upstairs don’t understand U-gas technology, and what they said is also contradictory!