H2S optimization for lignite liquefaction

Two lignite samples, Beulah No. 3 and Big Brown No. 1, were liquefied at 420 °C using H₂ and synthesis gas to determine the optimum beneficial amount of H₂S in the batch autoclave reactor. Under the conditions employed, 50–100 psi partial pressure of H₂S, nominally 4–10 wt% of daf lignite, was optimum for both samples. Synthesis gas outperformed H₂ with and without H₂S for the liquefaction of the two coals.     

Coal liquefaction using a hydrogenated creosote oil solvent: H-atom transfer from hydrogen donor components in the solvent

The presence of hydroaromatic, hydrogen donor components in a coal-derived solvent is one of the more important factors in the successful operation of a non-catalytic coal liquefaction process. Various hydrogen donor species present in a hydrogenated creosote oil have been identified. Their rate of disappearance under conditions that are consistent with a short residence time coal liquefaction process has been used to rank the reactivities of the various hydrogen donors. 1,2,3,10b-Tetrahydrofluoranthene was found to be an exceptional donor while 4,5-dihydropyrene, the hexahydropyrenes and 9,10-dihydrophenanthrene were found to be quite active. Sym.-octahydrophenanthrene and 2a,3,4,5-tetrahydroacenaphthene exhibited moderate activity. Tetralin and the four methyltetralin isomers were found to be unreactive under the coal liquefaction conditions employed.     

Analysis of polar compound classes in SRC-II liquids: Comparison of non-aqueous titrametric,i.r. spectrometric and h.p.l.c. methods

Results for various types of polar compounds in SRC-11 coal-derived liquids and other fuels were obtained by one or more of the three analytical methods: non-aqueous titration, i.r. spectroscopy and h.p.l.c. Practical aspects as well as precision, accuracy and assumptions necessary for effective application of each of the methods are discussed. H.p.l.c. is applicable to the widest variety of compound types, is the most rapid, most sensitive and shows the best promise for increased development and improvement. Application and development of these techniques is a logical step toward improving process monitoring, catalyst development, toxicological screening and general fuel analysis.     

Analysis of protein transport through the golgi in a reconstituted cell-free system

The processes which transport membrane proteins between compartments of the Golgi apparatus have been reconstituted in vitro using isolated Golgi fractions. This cell-free system allows a detailed analysis of protein transport not possible in intact cells. Transport of the membrane glycoprotein (G protein) of vesicular stomatitis virus (VSV) is measured from a “donor” to an “acceptor” Golgi fraction. The donor Golgi fraction is prepared from VSV-infected Chinese hamster ovary (CHO) mutant cells deficient in the glycosylation enzyme N-acetylglucosamine transferase I. “Acceptor” is prepared from uninfected wild-type CHO cells. Transport is measured by the addition of N-acetylglucosamine to G protein, which can occur only upon movement of G protein from donor to acceptor. Transport requires physiological pH and osmolarity, is dependent on nucleotide triphosphates, and is mediated by proteins both from cytosol and on the Golgi membranes. Protein movement is inhibited by the non-hydrolyzable GTP analogue, GTPγS. The process of transport proceeds through the budding, pinching off, targeting, and fusion of transport vesicles. In this system these vesicles are initially coated with a non-clathrin coat and are targeted with this coat intact. Several of the proteins which mediate transport have been characterized, and isolated to homogeneity. The successful development of this assay has led to the formulation of cell free assays for protein transport between other compartments. Comparison of these systems indicates that some common mechanisms of vesicular movement are used in transport between a variety of membrane compartments.     

The new structure of fibre glass reinforced plastics bolt

The develop actuality and direction of FRP (fibre glass reinforced plastics) bolt in the world are analyzed. The new type structure of FRP bolt was designed. Trial data indicate that, all kinds of capability target of this FRP bolt all achieve and exceed the country stand-ard, substitute present metal bolt, wood bolt and bamboo bolt and other side bolt, it can gain magnitude technology and economy benefit. FRP bolt mechanization product line produce ef-ficiency is high, its throughput a day are 750 base, this can meet demand of hit-small mining company.     

我国煤炭资源产业循环经济发展策略研究

在系统分析的基础上提出煤炭资源产业循环经济发展策略:研发、推广环境友好技术和先进技术包括清洁开采技术、推广和利用水煤浆、先进火力发电技术等进行生产;改变狭义的资源观,用好“废物”资源,如矿井水、煤层气、粉煤灰等;发展煤炭资源深加工,提高产品附加值;行业耦合发展,如煤电联营,提高资源利用效率;大力发展节能技术,减少煤炭资源消耗。并为我国煤炭资源产业发展循环经济的产业政策提出了几点建议。     

新型煤填充高分子复合材料的研制与应用

根据煤的结构特点,对煤进行闭环的超细粉碎,脱除部分挥发分,表面傅-克烷基化化学改性,与塑料经强制排气式共混,研制了一种新型的煤填充高分子复合塑料母料.将该母料用于聚丙烯,可制得具有较好强度、韧性和优良电绝缘性能的复合材料,在煤含量为20%(质量分数)时,复合材料的拉伸屈服强度大于24.0MPa,缺口冲击强度不小于8.0 kJ/m2;同时,煤/聚丙烯复合材料在较大的煤含量范围内(0%～50%,质量分数),直流绝缘电阻率保持在1014 Ω·cm以上.新型煤填充高分子复合材料在电线电缆中的应用表明,加工性能良好,成品绝缘层力学性能满足标准要求,绝缘性能优良,并可有效降低材料的成本.     

基于PLC技术的矿井提升机电控系统安全可靠性设计

针对应用日益广泛的矿井提升机PLC技术的电控系统,采取安全可靠的技术措施,既提高了工作效率,又加强了系统的控制功能,进一步提高矿井提升机电控系统的现代化水平,实现经济效益和社会效益的良性循环。     

煤巷锚杆支护技术的探讨

从巷道围岩强度,原岩自重应力,地质构适应力,煤柱留设宽度和巷道断面形状等方面对影响煤巷稳定性的因素进行了分析,提出了煤巷锚杆支护注意的6个问题。     

裂缝各向异性介质中P-SV转换波正演模拟

裂缝介质正演是研究裂缝性油藏的各向异性、裂缝检测方法、裂缝AVO反演等的前提。在裂缝方位各向异性(EDA)介质模型的基础上，重点研究了纵波震源激发的地震波所产生P-SV波的有限差分正演模拟方法。从各向异性单斜对称系统的刚性矩阵推导出的波动方程，可以满足EDA介质模型不同方位角入射的二维差分模拟要求。在有限差分模拟中，采用了普通的Kelly差分格式、二阶各向异性吸收边界条件和一般的纵波震源的解析形式，并应用修正的通量传输校(FCT)方法来消除频散。同时，对纵波震源的解析式进行了技术处理，取得了较好的效果。