Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11000610 | Fuel Processing Technology | 2018 | 8 Pages |
Abstract
The effects of alkali and alkaline earth metals and the retention time of tar precursors during the diffusion processes on the yield and composition of tar are discussed. The removal of these metals increased the tar yield of coal. Increase in the absorbance of tar was attributed to the increase in aromatic ring systems. Ion-exchangeable Na plays a dominant role in the retention of tar precursors, mainly polycondensed aromatic rings, by connecting them with the char matrix. Increasing the retention time in interparticle diffusion decreased the tar yield, especially for polycondensed aromatic rings. Increasing the retention time in inner-furnace diffusion slightly decreased the tar yield.261
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Hui Liu, Lianfei Xu, Deng Zhao, Qingxi Cao, Jihui Gao, Shaohua Wu,