共查询到20条相似文献,搜索用时 93 毫秒
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Rombopak填料是近几年研究成功的一种规整结构的塔填料,它的应用已经相当普遍。这种填料由与其它规整填料不同的小薄片组成。在考虑填料全部的设计参数如效率、压降、能力和放大的情况下,借助标准试验物系测定了Rombopak填料的效率。通过比较证明这种新的填料优于传统的塔填料和其它的规整填料。 相似文献
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泡沫碳化硅波纹规整填料的流体力学及传质性能 总被引:1,自引:0,他引:1
将碳化硅陶瓷材料用于精馏过程,将该材料与波纹板类填料形状相结合开发出泡沫碳化硅波纹规整填料和光滑碳化硅波纹规整填料.对2种填料进行了流体力学性能与传质性能的测试,研究了泡沫结构对规整填料性能的影响.在直径100mm的有机玻璃塔中使用空气-水体系对填料进行干填料压降、湿填料压降、泛点气速、持液量等流体力学性能测试;在直径100mm的常压玻璃塔中,使用环己烷-正庚烷标准物系进行全回流操作,对填料进行传质性能测试.实验结果表明,在填料外形相同的情况下,与光滑填料相比,泡沫填料的干、湿填料压降较高,泛点气速相当,持液量增大,传质效率显著提高. 相似文献
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进行了固体垃圾与污水污泥合成样品在管式焚烧炉内的混烧实验,采集样品进行化学成分分析,表征了污水污泥中的重金属在焚烧过程中向飞灰和烟气迁移的特性及对灰渣的毒性影响。结果表明,混烧显著提高了飞灰和底灰中重金属含量,其中Zn表现最明显。毒性测试结果显示,污水污泥的混烧导致了垃圾焚烧飞灰中Zn和Pb的浸出浓度超过中国危险废物浸出的控制标准值。 相似文献
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《Carbon》2014
A superhydrophobic surface with stability against moderate drop impact was quickly created with only a candle. There was no further need for any additional solvent, further surface treatment, drying process or post-treatment process. The fabrication is very simple. A surface is coated with a candle paraffin wax and then sooted with a candle flame. The paraffin wax was used to fix the fragile candle soot. This paraffin wax-fixed candle soot (PFCS) coating showed improved drop impact durability by up to a factor of 50, compared to a bare soot coating without a paraffin wax treatment. Thermal stability, compression tolerance, and pH tolerance of the PFCS coating were tested. The mechanism behind the PFCS coating and durability enhancement of the coating is explained. The simple PFCS coating method can be applied to various surfaces, such as metal, ceramic, wood, plastic and even paper. We provide proof-of-concept demonstrations in the application of this PFCS coating method. We foresee PFCS coating as opening up a new avenue for the development of an inexpensive and quick process for the fabrication of superhydrophobic surfaces. 相似文献
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考察了全瘦煤及部分配入肥煤两处煤料的热压成型性能,描述了试验所制热压型焦的优势指标。试验表明:全瘦煤及配入20%肥煤的两各煤料具有优良的热压成型性能。 相似文献
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The catalytic effects of liquid metals for low-temperature (336 °C) asphalt-cracking have been examined using a semi-batch reactor. All the liquid metals examined (Bi, Cd, Ga, In, Pb and Sn) effectively catalysed the reduction of molecular weight with minimal gasification (<1 wt%). Gasification had a positive correlation with the reduction in molecular weight in the processed asphalts. The catalytic activities of liquid metals tor these two reactions were proportional to a parameter which represents the interaction between the atoms of the catalyst metal and the radicals formed in the course of the reaction. Mass flow among four fractions (saturates, aromatics, resins and asphaltenes) had two independent paths: conversion of resins to saturates and of aromatics to asphaltenes. The former path dominated when catalytic dehydrogenation activity was relatively low, whereas the latter dominated when the catalytic activity was high. 相似文献
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煤等离子热解制乙炔反应器可用能利用研究 总被引:2,自引:1,他引:2
介绍了煤等离子热解制乙炔的工艺过程及煤等离子热解制乙炔反应器装置的结构形式。通过对煤等离子热解反应器系统的热力学分析,得出了该反应器系统的分析模型,分析了(yong)损失产生的原因,提出降低损失的措施。改进后的反应器系统采用淬冷器、换热器的多级热传递及原料的预热等热量利用方式。实验结果表明,改进后的反应器系统的(yong)损失由改进前的591.4kJ/kg—coal下降为448.0kJ/kg—coal,减少了24.2%。 相似文献
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