共查询到19条相似文献,搜索用时 78 毫秒
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从刚性转子的动平衡原理入手,着重介绍了YL型烟气轮机转子的动平衡特点、方法和在生产中的实际应用情况。 相似文献
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根据某炼油厂催化裂化装置烟气轮机频繁振动报警停车的现象,从催化剂、旋风分离器和工艺操作方面分析烟气轮机的故障原因,提出合理的故障处理措施,缓解烟气轮机叶片结垢与磨蚀状况。 相似文献
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烟气轮机是催化裂化装置关键设备中出现故障几率最高的,其中烟气轮机振动超标成为影响催化裂化装置长周期运行的主要问题,本文主要针对烟气轮机因结垢而产生的振动问题进行分析,总结了烟机运行情况,分析了三旋、烟机结垢的原因,提出了解决措施。 相似文献
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通过对某型烟气轮机叶片进行分析研究,叶片的断裂事主要是疲劳断裂,故先用solidworks画出叶片模型,在利用有限元分析软件ANSYS 14.0对其进行弹塑性应力应变分析,在分析过程中没有人为假设边界条件,因而得出的结果比较有参考价值。 相似文献
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运用理化检验对某烟气轮机转子叶片断裂事故进行失效分析。通过断口宏、微观形貌、金相组织和化学成分分析表明:叶片在铸造时存在孔洞、裂纹等缺陷,材料组织中存在沿晶界分布的脆性相;烟机一直在较高温度下工作,热交变应力对叶片影响较大,烟机内各种固体颗粒对叶片有冲刷作用,最终导致叶片发生断裂。 相似文献
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运用时域、频谱分析与轴心轨迹分析相结合的方法,对烟气轮机常见故障(转子不平衡、不对中、动静摩擦、油膜涡动)的特征进行了全面分析。并结合机组的历史状况,通过2个典型案例所采集的信号分析了烟气轮机故障的诊断过程和处理故障的对应方案。 相似文献
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本文介绍了鄂尔多斯电厂2×300MW#机组石灰石-石膏湿法烟气脱硫系统调试过程中遇到的若干问题,并对问题进行了详细的分析和解决,以便对其它同类型脱硫系统的凋试工怍提供参考。 相似文献
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The mechanism and kinetics of the elemental Hg oxidation in flue gas by ozone injection are investigated in detail by using quantum chemistry, kinetic simulation and experimental research. The reaction processes, activation energies and kinetic parameters are calculated and analyzed by quantum chemistry. From the comparison of activation energies, the Hg0 oxidation ability of oxidizing radicals is that: NO3>O3>NO2. The calculated results are in good agreement with literature experimental results. The calculated kinetic parameters are employed for kinetic simulation. The results of kinetic simulation are in good agreement with the experimental results. Results show that, the Hg0 oxidization increases linearly when the mole ratio of O3/NO becomes larger or the reaction temperature becomes higher. The reaction Hg+NO3 = NO2+HgO is the key elemental reaction and the concentration of NO3 is the most important factor for affecting Hg0 oxidation. 相似文献
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A water‐swollen thin‐film composite membrane, which was a reverse osmosis membrane with a thin polyamide layer, was used to separate a model mixture of N2, CO2, and SO2. The polyamide swells with water, and thus, becomes more permeable to polar gases. The flue gas contains water vapor, which must be removed before it is subjected to SO2 removal. Here moisture is employed to keep the membrane swollen. Using the model mixture, the humidified feed stream is brought to the membrane, where it is cooled below the dew point, so that water condenses on the membrane to keep the polyamide swollen. The membrane showed high CO2 and SO2 permeance, but low selectivity, so it could be applied to separate these two gases from N2, and thus, is suitable for flue gas purification. 相似文献