Which furnace should be used for gas production from smokeless coal particles of 1–10 mm?
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For gas production using smokeless coal particles of 1–10 mm, what kind of furnace should be used? Is a Ugas furnace suitable? Are there any existing cases of its use? I seek advice from experts!
Smokeless fly ash generally has a high melting point; it is recommended to use a dry coal powder gasification furnace, with the specific choice depending on the analysis results of the coal
Bituminous coal has a low volatile matter content and is considered a high-rank coal. Compared to low-rank coals such as lignite, subbituminous coal, inert coal, and weakly caking coal, it has low gasification activity. When using fluidized-bed gasification technologies like U-gas, the carbon conversion rate and cold gas efficiency are low, making it unsuitable for such applications. Fluidized bed gasification technology is more suitable for gasifying low-rank coals with high gasification activity. For anthracite, fluidized bed gasification technology is recommended. If the slurry-forming property is good, coal water slurry gasification technologies such as GE and multi-nozzle systems can be used; otherwise, dry coal powder gasification technologies such as Shell and space furnace systems are recommended. Of course it is necessary; it depends on the use of gas – whether it is to be used as an industrial fuel gas or as a raw material for chemical synthesis ； Requirements of downstream processes regarding total gas production, output per unit device, load adjustment range, and gas calorific value ； Technical and economic considerations are taken into account, including raw coal quality data (ash content, ash fusion point, grindability index), raw coal prices, and transportation distance. U-gas is a fluidized-bed gasification technology that uses ash fusion slag removal, with demonstration projects in Zaozhuang, Shandong, and Henan.
Jinmei Tianxi coal-to-oil plant used fluidized bed ash pyrolysis; it has now been dismantled and replaced with a space furnace.
How much of 10mm is produced from coal mining? Is this smokeless pulverized coal with a size of 1–10 mm the raw material used for manufacturing honeycomb coal? If there are many small particles, carbon molecular vaporization technology can be used to produce gas, which is cost-effective and offers a high carbon conversion rate.
If it is all powder, ball-making gasification can be used.
Mm-hmm, mainly because ball-making is a dirty process with many steps; it now seems that buying a fluidized-bed oxygen-enriched gas generation furnace is the most reasonable option
The carbon molecule vaporization technology consumes less than 50% less electricity compared to fluidized bed gas generation, and it also achieves a higher carbon conversion rate.