微波加热在纱线烘干中的应用

介绍了微波加热的基本原理、特点以及影响微波加热的因素,与蒸汽烘干、射频烘干相比,微波加热比蒸汽烘干节能40％,比射频烘干节能20％,仅每年运营维护费用比射频烘干节省4．5万元。提出应重点加强微波与物料间相互作用理论、微波场中物料的传热、传质机制,微波加热工艺与设备、微波加热技术与其它技术的有机结合等方面的研究。     

微波加热技术在材料工业中的应用前景

本文依据各种材料加工中微波加热性能和实际应用的综述,探讨了微波加热技术在材料工业中的实际应用和可行性及微波加热用于高技术材料生产中的前景。     

微波加热在陶瓷及其他工业上的应用

微波指的是能够渗透到物体内部 ,使物体整体加热的一种电磁波。微波加热系统由电磁波发生器和可将微波反射到被加热物体上的金属加热室组成。现代化的微波加热炉通常炉膛截面为圆形 ,这种炉膛设计比方型炉加热更均匀。除了单一微波加热炉外 ,还有复合式加热炉。微波加热结合以其他形式的加热 ,或几种不同频率微波加热 ,复合以热空气的微波炉可以用于材料的加热或干燥。这种加热炉最适合于解决高温、大物流量 ,仅使用微波加热经济成本高的应用。多频微波炉除了使用常规的 2 .4 5 4ＧＨｚ频率外 ,还要配以 1或 2种其他频率。其优点是适用于那…     

微波加热在油脂皂化中的应用

本文研究了微波加热在油脂皂化反应中的应用，结果表明油脂的皂化可在3～6min内完成。反应时间大大缩短，耗能大大降低。     

微波加热在化学反应中的应用进展

介绍了微波加热的基本原理,并就微波加热在有机合成、高分子合成及加工、无机合成、天然气转化等方面的最新应用情况进行了综述分析,指出应加强微波对化学反应作用机理的研究。     

微波加热在陶瓷领域中的应用

本文对微波加热和常规加热进行了对比，分析了微波加热在陶瓷领域中应用时优于常规加热的特性，看重介绍了微波烧结陶瓷和微波焊接陶瓷技术的发展与近况。     

微波技术在陶瓷工业中的应用

本文综述了近年来微波技术在陶瓷工业中的一些最新研究状况，包括微波加热。烧结，微波加热干燥，并对应用中的经济效益和应注意的问题做了分析。     

微波加热技术在催化反应中的应用

本文概括了微波加热的机理,阐述了微波与碳材料的耦合效应的作用原理,综述了微波加热技术在催化反应中应用的研究进展,指出了微波技术在催化反应中的应用所面临的主要问题,并对其发展方向进行了展望,为微波加热技术在催化反应中的研究与应用提供参考。     

Kinetics of microwave heating and drying of drilling fluids and drill cuttings

Drill cutting decontamination by microwave drying has been studied over the past few years and has proved to be a promising technology. This study aimed to investigate fundamental aspects of kinetics of heating and drying of drilling fluids and drill cuttings by microwaves. The microwave heating curve of cuttings free of fluid, drilling fluids, and pure organic compounds usually used in the formulation of these fluids was evaluated to understand the behavior of each component in microwave cutting decontamination. Furthermore, commercial software was used to describe the heating kinetics of the drilling fluids used in this study. The drying kinetics of cuttings contaminated with these drilling fluids was also studied at three temperatures of control. Some classic models of conventional drying of solids were used to describe the removal kinetics of the liquid components present in contaminated cuttings (water and organic compounds). Important aspects related to the interaction of these components in the drying operation and solid heating, water evaporation, and the drag of organic compounds were investigated. Both drilling fluids showed a very similar kinetic heating. Pure organic bases did not show a significant heating. For the same drying time, the removal of paraffin is more intense than the olefin. In respect to organic component removal from cuttings contaminated with both fluids, the kinetic drying curves are similar. The Page model was the one that best describes the drying operation of drill cuttings contaminated with both drilling fluids. The microwave drying model (MDM) model is proposed in this work as a simple modification in the Henderson–Pabis model: the addition of a third parameter. The incorporation of this parameter enabled a better fit of the experimental data. Computational simulations show an electric field with symmetrical patterns for the two BR-MUL fluids analyzed.     

微波干燥在聚氨酯水性木器涂料中的应用与研究

阐述了微波加热干燥的原理,以及微波干燥聚氨酯水性木器涂料的优势,研究和分析了微波干燥在单组分和双组分聚氨酯水性木器涂料中的应用。     

Experimental investigation on drying characteristic of titanium slag using microwave heating

Drying characteristic of titanium slag using microwave heating is attempted in the present work, so as to assess the effect of microwave power and sample mass, and to understand the mechanism and morphological changes. The results show that the water removal rate of titanium slag increased with both incident microwave power and sample mass. For the 50?g of sample microwaved at 600?W, for duration of 80?s, water content could be reduced to 0.02%. The thermal stability of the titanium slag and the morphological changes before and after microwave heating were characterized by TG/DSC and SEM. The results show an obvious endothermic peak at about 86°C, which indicates the dehydration processes of titanium slag, and the chemical stability of the drying materials within the drying temperature range. In addition, after certain duration, the sample under microwave heating developed internal microcracks, which augmented the release of internal water, improving the drying rate.     

微波干燥复肥初步研究

阐述了微波干燥复肥的可行性，进行了微波干燥复肥的实验，得到微波干燥尿基复肥的失水曲线、温度曲线及养分曲线。同时作了60℃常规干燥的对比实验，表明微波干燥复肥能够达到有关标准，并远优于常规干燥。     

微波干燥和热风干燥对金萱茶叶品质影响

将微波干燥和热风干燥应用于新鲜金萱茶叶的干燥,在3个不同的微波功率（350 W,470 W,800 W）和4个不同的空气温度（70 ℃,80 ℃,90 ℃,100 ℃）下,研究了干燥参数即微波功率或温度对干燥时间、失水量的影响,同时还考察了茶叶中茶多酚总量和儿茶素含量的变化、干茶叶的复水性。实验得出,与热风干燥相比,微波干燥的时间缩短了76%～95%,而且干燥后的茶叶有很好的复水性,但干燥后茶多酚总量少于热风干燥;同时随着功率增加,微波干燥时间由11 min降为6 min,随着温度升高,热风干燥时间由127 min缩短为45 min。这两种方法的茶叶干燥动力学模型均满足Page’s半经验公式。     

Criterion for selective microwave heating of sulphur in coal

A general criterion is developed for determining whether the selective heating of sulphur-bearing compounds in coal by microwave energy is more effective than conventional heating of the whole sample. Measurements of selective absorption are obtained as a function of microwave frequencies from 1 to 26 GHz. Using very conservative assumptions, it appears that unless absorption by sulphur compounds is 0.8–2.2 dB higher than absorption by other compounds, it is more efficient to use conventional heating techniques.     

微波加热在钛带冷轧酸洗中的应用

阐述了传统加热方式在钛带冷轧酸洗中的应用及其存在的问题,并分析了微波加热酸洗液的原理和技术特点,利用一种新型的微波加热设备,提出一种利用微波加热钛带冷轧酸洗液的新技术,通过中试实验证明新技术是有效合理的。并展望了微波加热技术在钢铁及有色金属行业冷轧酸洗工艺加热中的应用前景。     

基于束能推进的微波加热效率仿真

微波束能推进是一种新的微波能传输利用方式，使用高强度吸波材料将电磁能转化为热能。针对其热交换器系统构建了简化能量接收模型，对毫米波加热能量转换效率及最高温度进行了初步研究，并设计了三种结构进行模拟仿真，最高效率超过30%，稳定效率在23%左右。使用遗传算法对影响性能的参数进行了优化，结果表明热交换器性能受吸波材料有效损耗因子影响，应保持在一个适中的水平。     

Effect of microwave irradiation on the physical properties and structures of wool fabric

Microwaves are high frequency radio waves which are capable of penetrating many materials and causing heat to be generated in the process. To investigate the effect of microwave irradiation on the physical property, chemical structure, surface morphological structure, and fine structure of wool fabric, wool fabric was treated with microwave irradiation under variety of conditions in terms of the power and the time of microwave treatment. The breaking strength, breaking elongation, and whiteness of the treated wool fabric in different humid state were investigated. The structures of the untreated and treated wool were investigated with Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), and Laser Raman spectroscopy (LRS). The results show that the physical properties of the treated wool fabrics were changed with microwave irradiation time and power. The chemical structure had not significant change. The surface morphological structure, the concentration of cystine S S bonds and crystallinity of the treated wool were changed. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011