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填料支撑件包括支撑栅板、支撑梁等结构,支撑件与罐壁不锈钢复合板直接焊接时,存在复合板结合面被撕裂的风险,本文总结了复合板容器填料支撑结构的强度计算及设计经验,对结构型式及焊接方法提出了要求,可作为同类设备设计时的参考. 相似文献
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利用有ANSYS软件建立脱臭塔栅板的力学模型,进行栅板的强度和刚度计算及屈曲分析,得到栅板在工作状态下的应力和位移分布规律及屈曲临界载荷,分析结果表明:栅板的强度和刚度符合要求,但从长期使用考虑应对栅板进行适当加固. 相似文献
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三、设备的构造及其计算方法1)吸收塔的结构如图3所示,系一钢制塔身,顶部是平的,底部呈锥形。吸收塔的底部通常作为吸收液的贮槽,以便操作停止时之用。吸收塔内满布木制栅板填料,以增大煤气与吸收液间的接触表面,使操作中吸收H_2S的能力大为提高。栅板的规格通常采用:厚10~12毫米;高100~ 相似文献
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有机盐酸尾气吸收设备的介质为有机盐酸、游离氯和微量强溶解性有机溶剂,对浸渍石墨和钢衬PE/PO设备都有溶解作用。在不改变工艺设计的情况下,将尾气吸收设备改型为填料式吸收塔,通过改造材料、液体分布器、填料支撑栅板和多孔板结构,有效解决了尾气吸收塔故障率高和使用寿命短的问题,对其在强酸、有机酸和其他恶劣工况下的应用有很好的借鉴、推广意义。 相似文献
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本文以高负荷导向垂直栅板(简称HVGT)塔板流体力学研究为基础,对该塔板的传质性能进行了研究,探讨了塔板气相氨吸收效率与板孔气速和液流强度的关系,推导出了HVGT气相Murphree板效率数学模型。理论模型的计算值与实测值吻合良好。 相似文献
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针对填料种类和填料复配对胶粘剂试样稠度、拉剪强度和压剪强度的影响问题,优化了填料复配比例。结果表明,在进行填料复配处理后,ZT-100/A23复配体系的稠度相对ZT-100有所增加,可以一定程度上解决稠度大而难以搅拌的问题。随着ZT-100/A23填料配比或者ZT-100/400A填料配比从1∶2增加至9∶1,胶粘剂试样的拉剪强度和压剪强度都呈现先增加后减小的特征,在填料配比为1∶1时取得拉剪强度和压剪强度最大值。胶粘剂体系的热重从大至小顺序依次为:A23、ZT-100/A23、ZT-100;复配填料胶粘剂的热重介于2种单一填料之间,且填料A23的耐热性能最好,ZT-100/A23填料的耐热性次之。 相似文献
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A. M. Trushin E. A. Dmitriev V. V. Akimov 《Theoretical Foundations of Chemical Engineering》2008,42(3):264-270
Gas bubbling on sieve and grid trays is considered. From the energy balance for the bubbled layer, a theoretical equation is derived for calculating the average gas content of the liquid on the trays of a bubble column. The data calculated using this equation are compared with experimental data available on the average gas content of the liquid on sieve and grid trays for water-gas and organic liquid-gas systems. The equation is compared with some empirical and theoretical relationships. 相似文献
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All the present experiments confirm that there is some liquid channelling on trays. Liquid channelling is extensive on trays of large diameters. It largely depends on the tilting of the plate, modifications of the inlet weirs and on non-uniform bubble cap spacing. Consequences of liquid channelling for plate efficiency are clear; the higher the degree of liquid channelling the lower the plate efficiency. However, own experimental and theoretical investigations indicate that plate efficiency never falls below the value of point efficiency. Therefore, liquid channelling only affects the crossflow on trays. Liquid channelling reduces the mass transfer performance to a similar extent as does the backmixing of liquid. Consequently, plate efficiency is not very sensitive to liquid channelling. Since the liquid is completely mixed in the downcomer, the effects of liquid channelling are restricted to a single tray. The behaviour of tray columns completely differs from that of packed columns, where the effects of liquid channelling are cumulative over the packed height. Consequently, trays represent a suitable design for columns of large diameters. 相似文献
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The hydraulic and mass transfer performance of a combined knitted mesh packing and sieve tray has been measured for the distillation of methanol-water mixtures. It was found that by adding a shallow bed of packing, the Murphree tray efficiency increased by 40–50% over a wide range of concentrations and flow rates. This increase in tray efficiency can be attributed to a much smaller and more uniform bubble formation on the packed tray. Hydraulic measurements have shown that the packed trays have lower weeping and entrainment, as well as slightly higher froth heights and pressure drops. 相似文献
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Mass transfer efficiency models for plate and packed columns in distillation applications were examined. The influence of operating conditions, hardware parameters and physical properties on the height equivalent of a theoretical plate (HETP) were investigated. Recommendations on the choice of packings or trays were developed for different cases to maximize column efficiency. Some inconsistencies in the efficiency models for plate and packed columns reported in the literature were also discussed. 相似文献
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甲醇常压精馏塔底层塔板脱落原因分析及处理措施 总被引:1,自引:0,他引:1
造成塔板脱落的直接原因为气流或液流对塔板的冲击力过大所至,这个冲击力与塔的负荷大小、塔釜上升气流的波动情况等有关,这就要求精馏塔板在设计上必须满足额定负荷情况下抗气流的冲击力,同时精馏系统不可能保持在绝对稳定的状态下运行,这就要求精馏塔板必须满足一定范围内的负荷波动要求,因此塔板就应该具有一定的强度;而设计负荷条件下的塔板强度大小就和塔板的安装固定设计、塔径的大小、塔内气流的均匀分布设计等有关。 相似文献
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塔设备改造选型的分析 总被引:2,自引:0,他引:2
就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后,着重介绍一种新型塔板(导向梯形浮阀塔板)和一种新型填料(波环填料——乾隆帕克)。 相似文献
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介绍一套小型硫铁矿制酸装置扩建改造的设计特点。装置产能由60kt/a增加到80kt/a,净化工序由水洗净化工艺改为稀酸洗净化工艺。净化工序使用了下段为泡沫板、上段为填料床的组合式洗涤设备泡填塔,具有投资省和效率高的优点。预期改造投资回收期为4.5年,经济效益和环境效益良好。 相似文献