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本文通过集中除尘系统在巢湖水泥厂包装车间的成功应用,提出针对水泥厂包装车间粉尘治理集中除尘的方案;并提出应根据包装车间的具体情况进行通风系统的工艺设计及除尘设备器的选型。 相似文献
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本文对橡胶厂炼胶车间几种主要粉尘、烟气的特性进行了介绍,对除尘、通风、粉尘爆炸特性进行了分析,对橡胶工业大气污染物排放标准进行了综合、分析,提出炼胶车间粉尘、烟气污染的现状和治理办法。 相似文献
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介绍了橡胶厂几种主要粉尘、烟气的特性,并对除尘、通风、粉尘爆炸特性及橡胶工业大气污染物排放标准进行了分析,提出了炼胶车间粉尘、烟气污染的现状和治理办法. 相似文献
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该书由苏联冶金出版社于1980年出版。作者是德·符·柯波捷夫。全书128页,共分六章,其主要内容是: 一、生产环境的卫生特点 生产中的有害物质,改善劳动条件的一般原则。 二、在生产车间的粉尘的形成及扩散 电极和电碳生产中排出粉尘的理化性能,在各个工艺过程中发生粉尘的原因,在生产车间粉尘扩散的规律;采用循环空气的局部通风时计算车间空气中的粉尘含量,采用全通风时计算车间空气中的粉尘量。 相似文献
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红河磷肥厂 1 2万吨 /年磷铵装置自 1 993年 5月开车生产以来 ,设备通风系统的操作状况很差 ,厂房内粉尘大 ,操作环境恶劣 ,袋式除尘器粉尘排放量严重超标。针对这些问题 ,我厂于 1 996年 1 1月~1 997年 5月进行了技术改造 ,在国内同类装置设备通风系统上首次采用湿式除尘代替 相似文献
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谈包装车间的粉尘治理纪滕飞山东省淄博水泥厂(255100)包装车间是水泥厂最为严重的尘源之一。连续测试结果表明,我公司老式包装机处于工作状态时,作业点粉尘浓度高达9.6mg/Nm3,室内平均粉尘浓度7.8mg/Nm3,外排浓度2l0mg/Nm3,三项... 相似文献
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Dinesh Singh J. K. Gehlawat Musti S. Rao 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1990,47(2):127-136
Oslefins and diolefins are important intermediates in the petrochemical industry and the future promises a further substantial increase in demand. While several catalysts have been formulated in the past for the abstraction of hydrogen from butenes and propylene, these catalysts are inefficient in the abstraction of first hydrogen from butane. Bismuth molybdates (β and γ-phases) containing iron oxide and supported on alumina are used as catalysts in the present investigation on the oxidative dehydrogenation of n-butane. Effects of catalyst content, temperature and oxygen: n-butane ratio on conversion and selectivity to butadiene and (C4H8 + C4H6) are studied in the following ranges of experimental conditions: β-bismuth molybdate/100 mol support I(K), 3–9; γ-bismuth molybdate/100 mol support I(K), 5-20; temperature, 400–500°C; O2: butane ratio, 0.6:1.7. 相似文献
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A viscometer used to measure the viscosity of 10 μl of a liquid, must be miniaturized down, and the liquid velocity gradient in the channel used to determine the viscosity coefficient. Two major factors that affect the liquid velocity are the mechanical forces exerted by the mechanical motors and electromagnetic forces. In this study, electrowetting on dielectric (EWOD) is adopted to drive liquids. Variously sized electrodes on a chip, and two shapes of channel are employed to measure the velocity gradient to determine the viscosity coefficient. The device is fabricated by microelectromechanical system (MEMS) technology. The dielectric layer used in EWOD has a high dielectric constant, BST (Ba0.7Sr0.3TiO3), to reduce the required applied voltage; its surface is coated with hydrophobic polymer, polytetrafluoro-ethylene (PTFE, Teflon® AF DuPont). Experimental results demonstrate that liquids can be pulled at 660 μm/s in linear channels by applying a voltage of 15 V. 相似文献
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考登钢作为一种高耐候结构钢,广泛应用于各个领域。在火力发电方面,考登钢主要应用在工作环境比较恶劣的烟气加热器和空气预热器中。考登钢表面涂搪的目的就是进一步提高其耐腐蚀性能,延长使用寿命。为了提高考登钢元件的使用寿命,对考登钢表面涂搪瓷的可行性、密着性能、瓷釉、工艺控制、质量保证等方面进行了研究。 相似文献
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In reexamining medium effects on photochemical reactions, we have emphasized those on unequilibrated excited species such as the Franck-Condon species. Despite recent advances in femtochemistry, such a discussion in molecular photochemistry is uncommon, and the problem remains challenging on account of the extremely short-lived excited species. However, in such cases, a small perturbation resulting from, for example, weak guest-host interactions could turn into a determining factor in dictating the course of a photochemical channel of deactivation. Examples of medium-directed diabatic processes have been examined with this idea in mind. A modified view on rhodopsin photoisomerization is presented along with the consideration that confinement does not necessarily lead to inhibition of reactions of the trapped substrate. 相似文献
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研究了温度和pH值对漆酶酶活以及漆酶处理纤维压制纤维板性能的影响。结果表明,pH较低、温度较高时漆酶酶活较高,压制的纤维板强度性能较好。但温度太高(60~80℃),延长加热时间,漆酶稳定性变差,酶活明显降低,压制纤维板的强度下降。 相似文献
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采用密度泛函理论(DFT)考察了丙烷在Pt(111)表面上脱氢生成丙烯的反应机理。通过在Pt(111)面上预吸附一定数量H原子模拟共吸附H对丙烷脱氢过程的影响。结果表明:H共吸附能降低丙烷及其脱氢产物的吸附能,促进丙烯脱附,有利于提高丙烯的选择性;H共吸附会导致丙烷脱氢能垒变大,降低催化剂的脱氢活性;共吸附的影响随着H覆盖率增加而增大。 相似文献