以烯碱和烯盐酸两步处理脱除煤中矿物质和硫 Ⅱ.脱硫作用及机理

选用兖州、东林和南桐高硫煤以烯碱和烯盐酸两步处理，在考察脱矿物质效果的同时研究了脱硫作用及机理。南桐煤全硫含量Std为4.25%，在120－240℃以6W％NaOH水溶液处理，再在100℃以5W％HCl巡取，脱硫率从38.8%增加到62.4%，其中主要脱的是Ss和Sp,So变化很小。当在370℃进行碱处理后，东林煤有机硫的脱除率达到50.6%,兖州煤则达到57.3%。文中还 对无机硫和有机硫的脱除机理进行了初步研究。     

以稀碱和稀盐酸两步处理脱除煤中矿物质和硫——Ⅱ.脱硫作用及机理

选用兖州、东林和南桐高硫煤以稀碱和稀盐酸两步处理,在考察脱矿物质效果的同时研究了脱硫作用及机理。南桐煤全硫含量S_(td)为4.25%,在120～240℃以6W%NaOH水溶液处理,再在100℃以5W%HCl浸取,脱硫率从38.8%增加到62.4%,其中主要脱除的是S_s和S_p,S_o变化很小。当在370℃进行碱处理后,东林煤有机硫的脱除率达到50.6%,兖州煤则达到57.3%。文中还对无机硫和有机硫的脱除机理进行了初步研究。     

以稀碱和稀盐酸两步处理脱除煤中矿物质和硫 Ⅰ.矿物质的脱除

选用四种不同煤化程度的煤在不同条件下以6W％NaOH和5W％ HCl溶液进行处理，考察了它们的脱矿物质作用。经210℃，N2初压2MPa和60min碱处理与100℃、常压、30min的酸浸取，淮北煤的灰分从7.19％降 低到0.90%，精煤收率达98%；依兰煤的灰分则从2.46%降低到0.19%，精煤收率为90％，其它煤的试验结果相似。还考察了煤的粒度、碱液浓度和处理时间对脱矿物质的影响。试验和分析证明，在一定条件下，碱可与粘土类矿物质反应生成易被盐酸分解的方沸石之类的矿物。     

Multiformity of Optical Quantum Coherence Systems with Y and Inverted Y-type Schemes

Y and inverted Y-type four-level schemes for optical quantum coherence systems, which may be intuitively considered to be very simple, have not been studied intensively till now. In this paper, we present the multiformity of these two types of schemes by considering that they can be classified into nine possible level styles as the second-order sub-schemes using laser fields. Further we point out the complexity of their more than one hundred realistic configurations as the third-order four-level sub-schemes that may appear in the optical quantum coherence experiments. Throughout this paper we review which configurations have been studied in some research aspects and which ones not, according to our knowledge, in order to be propitious to next steps of theoretical and experimental investigations, especially for applications in the fields of quantum optics, quantum information science, laser spectroscopy, and so on.