一款新型双向数字PWM整流器的设计

设计了一款具有高功率因数的数字整流设备,其中控制核心是具有高精度PWM模块的高性能DSC芯片TMS320F28035,控制方式采用内环电流环,外环电压环的双环控制。实验证明,该数字电源控制精度高,而且具有高功率因数,谐波污染小等特点,是一款高效的绿色电源。     

油页岩的干馏废水的处理

本文主要介绍油页岩干馏废水的羟基自由基（CAOT）处理工艺及该工艺中各构筑物作用和效益分析。     

四川飞仙关鲕滩储层高电阻率成因分析

川东北飞仙关鲕滩储层普遍存在高电阻率现象,给储层识别和流体性质判别带来了很大的困难.从模型模拟和实测资料2个方面研究了岩性、饱和度、孔隙结构和侵入特性对川东北飞仙关鲕滩高电阻率储层的影响.结果表明:当其它因素不变时,泥质含量对电阻率影响程度的范围是0～10%,飞仙关鲕滩储层极低的泥质含量是飞仙关鲕滩储层高电阻率出现深浅双侧向大幅度正差异的前提条件;其储层孔隙结构复杂和高含气饱和度是形成高电阻率储层深浅双侧向正差异的一个重要原因;另一方面,鲕滩储层发育的溶蚀孔洞由于大小、充填情况及连通情况千差万别,导致深浅双侧向曲线相关性差,增加了两者幅度值的差异.综合分析各种因素,才能准确评价川东北飞仙关鲕滩高电阻率储层.     

Influence of sedimentary environment on the shale gas reservoir of Sahai formation in Fuxin Basin,northeast China

Fuxin Basin is a continental faulted lacustrine basin in northeast China with significant shale gas resources. The shale reservoir mainly developed in the sedimentary environment of the deep and semi-deep lake, swamp, and the interdistributary bay. Deep and semi-deep lake shale has considerable thickness, high clay content, dominant type II₁ kerogen, and more pyrite framboid pores; swamp shale has the highest TOC content, type III kerogen, high clay content, and more organic pores; interdistributary bay shale shows high brittle mineral contents, type II₂ kerogen, and more intergranular pores. The methane adsorption capacity is highest in swamp shale, followed by the deep and semi-deep lake and interdistributary bay.     

油页岩燃烧污染物排放特性的影响因素分析

在小型热态流化床燃烧实验台上,研究了循环倍率、床料高度、二次风率对油页岩流化床燃烧过程中SO2、NO、NO2、NOx等污染物排放特性的影响。结果表明,在循环倍率为6、床料高度为炉膛高度的5%时各种污染物排放量相对最低,流化床在此工况下运行最合理;随循环倍率的增加,SO2浓度急剧下降,而随床料高度的增加,各排放气体浓度均有上升,但是上升的幅度不明显;随二次风率的增加,NO、NO2、NOx排放量均下降,但SO2排放量有所增加,二次风率应以40%~50%为宜。     

Mineralogical and Geochemical Studies of Oil Shale Deposits in the Cretaceous/Paleogene succession at Quseir Area,Egypt

Cretaceous/Paleogene succession in Quseir area represents one of the most important economic sedimentary rocks, which contain phosphate and oil shale beds. Oil shale samples selected from nine mines around Quseir area were subjected to mineralogical, petrographical and geochemical analyses. As raveled by X-ray diffraction analysis, the oil shale samples are composed of calcite, quartz, dolomite, smectite, kaolinite, gypsum and pyrite. The petrographical investigation of the studied oil shales indicates the dominance of two microfacies: calcareous foraminiferal claystone and Calci-mudstone. The EDX results of oil shale samples show that the pyrite found as framboidal-disseminated particles in smectite. The high ratio of the sulfur and organic carbon contents in the selected mines indicate highly reducing environment. Five mines (El-Nakheil, Abu Tundub, Abu Tundub Bahree, El Beida and Hammadat) are markedly rich in organic content and can be considered as good to excellent source rock.     

外墙自保温体系的施工技术

结合工程实例,介绍了采用JN节能型烧结页岩空心砌块为墙体的外墙自保温体系的构造、组成材料及施工过程,积累了相关施工经验,同时推广外墙自保温体系的应用。     

油页岩溶剂萃取技术研究

为寻找油页岩清洁、高效利用的途径,分别进行了油页岩在温和条件下溶剂萃取、添加剂辅助萃取、微波辅助萃取等工艺的研究。采用气相色谱/质谱联用技术(GC/MS)对三种不同萃取工艺获得的萃取产物进行了成分分析。结果表明:萃取法是油页岩资源利用的有效途径,萃取率可以达到8.2%以上。在萃取过程中加入添加剂或采用微波辅助萃取均可提高油页岩的萃取率,且微波辅助萃取工艺可有效地缩短萃取时间、降低萃取剂的用量。GC/MS分析表明,萃取物主要由脂肪烃构成,其次是含杂原子的化合物,芳环族化合物含量较少。微波辅助萃取可获得更多种类的有机化合物。     

基于DSP的网络摄像模块设计

在视频监控领域,网络摄像系统的应用越来越广泛。基于TI公司的DSP芯片TMS320DM642的网路摄像单元的设计。此系统以DM642为主体,将CMOS图像传感器0V7660传送来的数字化视频信号进行压缩编码,然后通过网卡芯片LXT971传送到网络上。网络上的用户可以直接用浏览器观看Web服务器上的摄像机图像。     

不同升温速率干馏对桦甸及龙口页岩油性质的影响

随着我国经济的快速发展,石油的产量已不能满足市场需求.页岩油工业是能源工业的一个组成部分,页岩油也是天然石油的一种补充能源.对吉林桦甸和山东龙口油页岩的基础特性进行研究,主要包括油页岩的含油率、工业分析、元素分析及发热量等.并介绍了油页岩的干馏试验,在不同升温速率(5 ℃/min、10℃/min、15 ℃/min、20...