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逐级酸处理对锡盟褐煤的结构及热解特性的影响:气相产物的生成 《燃料化学学报》2013,41(10):1160-1165
为了考察逐级酸处理对锡盟褐煤热解过程中气相产物生成的影响,对锡盟褐煤进行了HF-HNO3-HCl逐级处理,原煤和酸处理煤样采用固定床热解-气相色谱法在线分析气相产物释放行为和变化的研究。结果表明,逐级酸处理过程对锡盟褐煤热解过程中含氢气体、含氧气体和含硫气体的释放有着明显的影响。不同气体的形成途径、形成阶段和温区不同,导致酸处理过程对其的影响有明显的差异。逐级酸处理的煤样,除因矿物质对煤热解气相产物的影响减弱外,HNO3处理样还因其氧化作用引起了气相产物释放趋势的变化,使得含氢气体的释放量降低、含氧气体释放量增加;降低了H2S的累积释放转化率而促进COS的释放。 相似文献
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References: 《声学学报:英文版》2008,27(1):23-33
The performance of port/starboard discrimination of dual-line array will be seriously degraded when the space between the two line arrays of the dual-line array is mismatched. The directivity function of the delay-sum and delay-subtract beamforming is deduced and the port/starboard discrimination of the delay-sum and delay-subtract beamforming is also studied both under the ideal status and the status under which the space between the two line arrays of the dual-line array is mismatched. Analysis results show the delay-subtract beamforming has better performance of port/starboard discrimination. At last, the sea trial results demonstrate the theoretical results. 相似文献
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