一次能源的动向及石油资源的有效利用

介绍了全球一次能源的消费情况,着重介绍了石油资源的分布情况、原油生产情况、石油消费及石油贸易情况.从全球一次能源的消费情况及石油消费量的预测情况来看,石油资源仍然是最重要的一次能源,确保并有效利用石油资源是摆在我们前面的重要课题.提出了有效利用石油资源的建议.     

己二酸行业发展将趋缓

介绍了己二酸的性能、应用以及发展情况。概述了全球己二酸行业的供需现状及发展前景。介绍了近几年中国己二酸行业的最新发展情况,包括生产情况、消费情况以及产品进出口情况。分析了中国己二酸行业所面临的问题以及未来发展方向。     

我国汽油供需现状及需求预测

分析了近年我国汽油生产、消费情况和出口情况,展望了2006年的我国汽油市场,预测了今后汽油的需求情况.     

我国汽油供需现状及需求预测

分析了近年我国汽油生产、消费情况和出口情况,展望了2006年的我国汽油市场,预测了今后汽油的需求情况。     

浅析漂粉精国际市场格局

介绍了漂粉精的用途、生产情况、市场格局,重点分析了国内漂粉精的生产情况和出口情况,预测了漂粉精的市场并提出了相应的营销策略。     

中国氧化铁行业2015年运行回顾及2016年展望

全面回顾了中国氧化铁行业2015年经济运行情况和运行特点,分析了氧化铁行业2015年综合利用实效、经济指标完成情况、生产营销情况、进出口贸易情况等,并对2016年氧化铁行业的发展进行了前瞻。     

进入新常态保持平稳增长,适应新常态培育竞争新优势 中国氧化铁行业2014年回顾及2015年展望(下)

综述了在新常态下2014年我国氧化铁颜料行业的经济运行情况,分析了氧化铁行业2014年综合利用实效、经济指标完成情况、生产营销情况、进出口贸易情况等,并对2015年氧化铁行业的发展进行了前瞻。     

中国二氧化硫排放情况及其对环境的影响(待续)

概述了30年来国内二氧化硫排放的整体情况及各行业、各地区的情况,分析了SO2排放对环境造成的影响,介绍了国内对酸雨区的监测情况及环境空气质量的变化情况,并总结了国内二氧化硫排放大幅降低与环境空气质量明显好转的原因.     

进入新常态 保持平稳增长,适应新常态 培育竞争新优势 中国氧化铁行业2014年回顾及2015年展望(上)

综述了在新常态下2014年我国氧化铁颜料行业的经济运行情况,分析了氧化铁行业2014年综合利用实效、经济指标完成情况、生产营销情况、进出口贸易情况等,并对2015年氧化铁行业的发展进行了前瞻。     

国内丁苯橡胶及丁二烯市场现状及发展趋势

综述了2012~2013年国内丁苯橡胶现有的装置能力、开工情况以及新建装置情况,统计了近几年的进出口情况。介绍了2012~2013年国内丁苯橡胶市场情况,具体分析了国内丁苯橡胶市场2012~2013年价格变化情况以及影响价格的各种因素,重点分析了原料丁二烯对丁苯橡胶发展的影响。对国内丁苯橡胶及丁二烯的发展趋势进行了分析和预测,针对国内丁苯橡胶的发展提出几点建议。     

页岩气水平井扫塞技术研究

在油田开发中,页岩气井一般经历钻井、固井、固放磁测试、通探洗、TCP射孔、压裂、扫塞、放喷、下生产管柱投产的过程,而扫塞涉及的内容比较广泛,它包括检测地面流程连接的合理性、套管压裂后的变化程度评估、侧面反映连续油管和压裂车的密切配合、捕塞工具的合理组合,在本文对压后扫塞技术进行研究。     

催化-分离脱氢膜反应器的透氢性能研究

1 前言在化学化工领域中利用膜材料的选择性渗透和催化作用来改善反应性能正越来越受到人们的重视。与传统的颗粒状催化剂-固定床反应器体系相比较,膜催化反应器在质量传递、热量传递和活化反应物方面有较大的差异。例如,用传统的固定床反应器由于受热力     

蒸汽渗透法脱除丙烯中微量水分的研究

采用涂敷法制备了CS/PS,PVA/PS,PVA-CS/PS中空纤维复合膜并用于气相丙烯中微量水分的脱除.研究了PS基膜、原料气湿含量、流速及吹扫气流速等因素对蒸汽渗透分离性能的影响.结果表明,这些复合膜均具有良好的分离性能,其中CS-PVA/PS中空纤维复合膜具有最优的蒸汽渗透性能.     

蒸汽管道吹扫的合适参数和流量

按吹扫力倍率确定吹扫蒸汽的参数和流量，改进吹扫方式，力求用效、节能、简便。     

燃油烟气净化电收尘器的应用

由于燃油烟气污染绝缘装置，电收尘器不能正常运行。为此，新上1台电收尘器。针对燃油烟气的特性，新电收尘器绝缘系统采用了“热风吹扫”，150—200℃空气分两路进入高压绝缘系统，一路进入绝缘子保温箱，通过设在阴极吊挂杆上的吹风孔及防尘筒上的环管进入绝缘子内部，绝缘子内部与电场本体内形成一个压力差，从而起到气封与清扫作用；另一路进入电瓷轴箱，通过电瓷轴箱环管和喷管，热空气在电瓷轴箱与电场内形成压力差。“热风吹扫”的投入使用，基本解决了绝缘装置的污染。     

The electrical conduction mechanism of multiwalled carbon nanotubes film synthesized by microwave plasma chemical vapor deposition

Multiwalled carbon nanotubes (MWNTs) were synthesized by microwave plasma chemical vapor deposition (MPCVD) on Ti/Si substrate with Ni catalyst. Then MWNT films were annealed at 300 °C for 10 min. Micro-Raman spectroscopy was performed to analyze the micro structure of the samples. It was noted from the Raman spectra that the ratio of I_D/I_G decreased after the annealing process, indicating more MWNTs were transformed to graphite structure at the temperature of 300 °C. In this research, the electrical properties of MWNTs film were investigated before and after the annealing process, different from the past research that focused on single or bundle of MWNTs. It was found that the I–V traces of the unannealed MWNTs film exhibited abrupt current increase and decrease phenomena by sweeping up and down voltages, respectively, and with different traces. Moreover, the threshold voltages for the saturation region increased after some successive measurements during sweeping up, but the similar effect was not observed during sweeping down. Similar phenomena were observed for the annealed MWNTs film; however, the threshold voltages, compared to that of the unannealed MWNTs film, spread out more during sweeping up and became smaller during sweeping down. It suggests that the nanotubes have thermally activated defects in rectifying conduction contacts between tungsten probes and MWNTs at the higher temperature induced by high applied voltages. Therefore, the breakdown voltages of the rectified contacts would change due to various thermally activated defects at higher temperatures. The equivalent circuit for the W-probe/MWNT-films/W-probe structure will be further presented in this study.     

气扫式膜蒸馏传质传热过程

对气扫式膜蒸馏（SGMD）的热量和质量传递机理进行了研究,建立了该过程的热量和质量传递模型,并对模型进行了计算,得出了吹扫气流速、组件长度、进料流速和进料温度对膜通量的影响。通过实验对模型计算结果进行了验证。实验结果表明模型计算值与实验值非常接近。随吹扫气流速的增大,通量先增加然后趋近于平衡。组件长度越短通量越高。进料流速对通量的影响很小,随膜丝内Reynolds数的增加,通量稍有增加,随进料温度的升高,通量呈指数倍增加。     

eat and mass transfer of sweeping gas membrane distillation

对气扫式膜蒸馏（SGMD）的热量和质量传递机理进行了研究,建立了该过程的热量和质量传递模型,并对模型进行了计算,得出了吹扫气流速、组件长度、进料流速和进料温度对膜通量的影响。通过实验对模型计算结果进行了验证。实验结果表明模型计算值与实验值非常接近。随吹扫气流速的增大,通量先增加然后趋近于平衡。组件长度越短通量越高。进料流速对通量的影响很小,随膜丝内Reynolds数的增加,通量稍有增加,随进料温度的升高,通量呈指数倍增加。     

COKE COMBUSTION AND REACTIVATION KINETICS OF A ZSM-5 ZEOLITE BASED CATALYST USED FOR THE TRANSFORMATION OF METHANOL INTO HYDROCARBONS

The effect of the operating conditions and aging of a catalyst deactivated in the MTG process on its regeneration by coke combustion is studied. Due to the nature of the coke, an equilibration treatment (sweeping with N² at 550°C for 0.5 h) prior to its combustion must be carried out in order for this to be reproducible and independent of the operating conditions. The combustion kinetics has been studied by experiments in a differential scanning calorimeter and following the gaseous products (CO, CO² and H²O) by FTIR analysis. The kinetics of catalyst reactivation is determined by experiments in a fluidized bed reactor.     

Conversion of polyester into heat‐resistant polyamide by reacting with aromatic diamine compound II. Semibatch reaction by nitrogen gas sweeping process

The conversion of poly(ethylene terephthalate) (PET) into heat‐resistant polyamide was carried out in the solid state polycondensation by applying a nitrogen gas sweeping process. The reaction product obtained by the catalyzed and uncatalyzed batch reaction with the specified reaction condition was used as the starting material in the semibatch reaction process. Nitrogen gas was introduced into the reactor to remove a volatile reaction byproduct from the reaction mixture. Effect of the semibatch reaction variables such as temperature, time, and nitrogen gas sweeping rate on the extent of reaction and the heat‐resistant property of polyamide obtained was investigated. A comparison of the extent of reaction in the semibatch reaction process was made between the catalyzed starting material and the uncatalyzed one. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 2223–2232, 2004