除沫器自动冲洗装置的设计及应用

本文针对Ⅰ效二次蒸汽折流板式除沫器需定时冲洗的实际情况，设计了一套冲洗间隔灵活可调的自动冲洗装置，该装置结构简单、工作可靠，易于实现，有一定的实用价值。     

酒钢焦化厂无水氨装置优化

介绍了无水氨生产工艺,分析了影响无水氨生产的不利因素,提出增加水冷洗萘装置、改进脱硫后捕雾装置、强化无水氨系统保温等具体措施,以优化无水氨生产工艺,为类似地区新建、改建无水氨装置提供了借鉴。     

湿法脱硫系统弧形板带钩除雾器流场数值模拟与分析

采用计算流体力学方法对除雾器内流场进行数值模拟.除雾器内气液两相流动的数值计算主要用基于欧拉-拉格朗日方法的离散相模型.流体被当做连续相,其流场可通过时均N-S方程求得,而离散相液滴的轨迹则可通过已经计算的流场追踪得到.通过计算不同工作参数下除雾器的除雾效率和压降,分析并总结了不同参数对除雾效率和压降的影响规律,对除雾...     

大型燃煤电厂烟气脱硫系统吸收塔除雾模型的实验研究

针对目前我国大中型燃煤电厂烟气脱硫系统中吸收塔除雾器依靠进口的现状,提出了一种除雾模型,在实验室模拟条件下进行了石膏浆液-空气系统除雾器性能的实验研究,对除雾模型的出口气体压降、出口含雾量、含雾粒径等影响因素进行了初步的分析探讨,提出了实验条件下除雾器的计算模型。     

钛网孔波纹板除沫器的制造与应用

介绍了工业纯钛的特性和钛网孔波纹板除沫器的结构特点、制造焊接方法及抗腐蚀性能。实践证明在润滑油精制装置中使用具有较强的抗腐蚀能力,在含有卤化物和环烷酸的介质中,其抗腐蚀能力尤为突出。     

脱硫除雾器冲洗喷嘴性能指标优化

冲洗喷嘴是除雾器冲洗系统中最重要的执行部件,但目前所用冲洗喷嘴均存在边缘处冲洗水量较低的问题。经过大量试验,系统地研究了冲洗喷嘴的冲洗流量、扩散角、冲洗水量和均匀度的变化规律。研究结果表明,当喷嘴芯旋度为30°、排放口倒角半径在3.5 mm左右时,可以达到扩散角不小于90°、边缘处冲洗水量不小于20 mm的优化要求。     

Experimental and numerical analysis of a demister with vortex generators

An improved wave-plate demister equipped with vortex generators(VGs) has been proposed for wet flue gas desulfurization systems(WFGD) in this work. Numerical and experimental methods were used to evaluate the effect of VGs on the separation of small droplets. Five types of wave-plate demister with different VGs were analyzed. The vortex generators in question included rectangular plates, semi-elliptical plates, square tubes, round tubes, and triangular tubes, respectively. In order to explain the strengthening mechanism, the distribution of flow field, secondary flow, and droplet trajectory were shown, and the effect of VGs on the flow field in the demister was discussed in depth. The simulation results show that the separation performances of the demisters with VGs were significantly improved over that of the initial demister, and the accompanying pressure drop was small. For the vortex generators studied, the rectangular plate fully demonstrated its superior separation performance, followed by semi-elliptical plate. The strengthening effect of VGs was tested through experiments. Experimental data reveal that the average droplet diameter(D_(50)) at the outlet of the demister with a vortex generator can be reduced to 23.13 μm, whereas this value for the initial demister can be maintained at 32.07 μm. Moreover, compared with the original demister0.81, the overall separation efficiency of the improved demister was improved to 0.92.     

高效除沫器在乙烯装置上的应用

介绍了金属丝网式和折流板式除沫器的结构特点,分析了其除沫原理及影响除沫性能的主要因素。结合在乙烯装置上的应用情况,提出了除沫器的除沫效果是影响装置经济运行的关键因素之一。装置进行扩能改造时,选用垂直高效折流板式除沫器,是有效、可靠的除沫方法。     

新型传质分离塔器的应用与探讨

重点介绍国内近年来成功应用于石油化工行业的几种新型专利塔板、塔填料及除雾器,可供有关行业在新装置设计和老装置改造时参考选用。