Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
Bioresour Technol. 2012 Apr;109:188-97. doi: 10.1016/j.biortech.2012.01.019. Epub 2012 Jan 15.
Rapid pyrolysis of rice straw (RS) and Shenfu bituminous coal (SB) separately, and rapid co-pyrolysis of RS/SB blends (mass ratio 1:4, 1:4, and 4:1), were carried out in a high-frequency furnace which can ensure both high heating rate and satisfying contact of fuel particles. Synergies between RS and SB during rapid co-pyrolysis were investigated. Intrinsic and morphological structures of residual char from co-pyrolysis, and their effects on gasification characteristics were also studied. Synergies occurred during rapid co-pyrolysis of RS and SB (RS/SB=1:4) resulting in decreasing char yields and increasing volatile yields. Synergies also happened during gasification of the char derived from co-pyrolysis of RS and SB with mass ratio of 1:4. The increased mass ratio of RS to SB did not only weaken synergies during co-pyrolysis, but significantly reduced the gasification rates of the co-pyrolysis char compared to the calculated values. Results can help to optimize co-conversion process of biomass/coal.
分别对稻草（RS）和神府烟煤（SB）进行快速热解，以及在高频炉中进行 RS/SB 混合物（质量比为 1:4、1:4 和 4:1）的快速共热解，高频炉可以保证燃料颗粒的高加热速率和良好的接触。研究了快速共热解过程中 RS 和 SB 之间的协同作用。还研究了共热解残余炭的本征和形态结构及其对气化特性的影响。RS 和 SB（RS/SB=1:4）的快速共热解过程中发生了协同作用，导致炭产率降低，挥发分产率增加。当以质量比 1:4 共热解 RS 和 SB 得到的炭进行气化时，也发生了协同作用。RS 与 SB 的质量比增加不仅削弱了共热解过程中的协同作用，而且与计算值相比，显著降低了共热解炭的气化速率。研究结果有助于优化生物质/煤的共转化过程。
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