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对稻壳和稻秸进行了机理性热解试验,并采用TG、SEM、EDS和XDR方法研究和分析了半焦的孔隙结构、结渣特性、氯和硫元素迁移和无机化合物晶相等物化特性的变化规律.结果表明:在500～800℃,生物质热解半焦孔隙结构的变化较大.当热解温度为1 000℃时,稻壳半焦的凸面呈现熔融现象,稻秸半焦呈现熔融黏结现象.在800～1 000℃,半焦中剩余的氯和硫大部分会析出;在稻壳和稻秸热解过程中,当终温为1 000℃时,物相发生较大变化并且出现非晶态的无机化合物.
Pyrolysis experiments of rice husk and rice straw were carried out. The pore structure, slagging characteristics, the migration of chlorine and sulfur, and the physical and chemical properties of inorganic compounds were studied and analyzed by TG, SEM, EDS and XDR methods. The results showed that the pore structure of the biomass pyrolysis semi-coke changed greatly at 500-800 ℃ .When the pyrolysis temperature was 1000 ℃, the convex surface of rice husk semicoke presented the melting phenomenon, Showing the phenomenon of melt-bonding. Most of the residual chlorine and sulfur in the semi-coke would precipitate at 800-1000 ℃. During the pyrolysis of rice husks and rice straw, the phase appeared larger when the final temperature was 1 000 ℃ Change and appear amorphous inorganic compounds.