共查询到20条相似文献,搜索用时 125 毫秒
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在合成氨生产中,原料气及精制气在压缩过程中,有少量的压缩机润滑油进入气体。这些油若不经脱除而进入后续的变换、甲烷化、合成等工序,就会附着在催化剂表面,轻则造成阻力增大,重则使催化剂中毒。因此,需采取一定的措施来脱除原料气中的油。我厂在常压脱硫改造中,设计了滤油炭除油系统,滤油炭除油的好坏将直接影响后续系统中催化剂的使用寿命和生产的稳定运行。所以,必须对滤油炭的饱和状况及时进行分析。所以,必须对滤油炭和饱和状况及时进行分析,以便为生产控制提供依据。为此,我们经过实验,决定采用萃取法分析滤油炭中的油含量。 相似文献
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在煤化工的生产过程中,原料气和精制气在压缩过程中,有少量的压缩机润滑油进入气体。这些油若不经过脱除而进入后续的变换、甲烷化、合成等工序,就会附着在催化剂表面,轻则造成阻力增大,重则使催化剂中毒。因此,需采取一定的措施来脱除原料气中的油。我厂在常压脱硫改造中,设计了滤油炭除油系统,对滤油炭的饱和状况及时进行测定,以便为生产控制提供准确的依据。为此,我们经过实验,决定采用萃取法分析滤油炭中的油含量。 相似文献
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本文分析了汽轮机组在润滑油供油不足时机组的振动机理,并以某特定机组的振动频谱为例,分别从时域和频域角度阐述了润滑油供油不足时转子及轴承的振动特征。最后总结出4个在实际工程环境中诊断汽轮机组润滑油供油不足情况的方法。 相似文献
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浙江石油化工有限公司新建350万t·a-1柴油加氢裂化装置离心式压缩机组为装置核心动设备,该离心机组包含离心机、汽轮机、凝汽系统、润滑油系统等,其中润滑油系统包含润滑油箱、油泵、管道、高位油箱以及相应仪表设备等,该系统为离心机和汽轮机提供稳定并符合一定压力的润滑油,润滑油泵共计两台,一台小型汽轮机、一台螺杆泵。油站小汽机既是节能设备,也是离心机组的关键设备之一,小汽机的运行稳定与否直接影响离心机的运行安全。介绍了该机组自2021年6月份启机后至2022年4月期间小汽机运行上发生过的问题,并分析了这些以及对小汽机进行了技术改造,同时分析了小汽机改造效果,为后期小汽机稳定运行打下基础并提供依据。 相似文献
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为保证汽轮机、发电机、励磁机和盘车装置等轴瓦的润滑、冷却及带走因磨损而形成的杂质,余热发电系统有一套专门的由主油泵、高压电动油泵、低压润滑油泵、直流油泵、冷油器、事故油坑和过滤器等组成的润滑油系统。一般汽轮机厂房油系统的布置为:油箱在二楼;高压电动油泵、低压润滑油泵、直流油泵、冷油器和过滤器在一楼,在油箱的下部,便于利用位置差对油泵供油,事故油坑在油泵房外与油泵并排设置;汽轮发电机组在三楼,主油泵在汽轮机的机头由主轴直接带动。 相似文献
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全面排查500kt/a合成氨装置合成气压缩机运行过程中润滑油系统进水的问题,发现是汽轮机轴封蒸汽漏入润滑油系统,经过深入分析,制定了相应的预防措施。 相似文献
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Diesel lubricating oil contaminated with sunflower oil fuel was degraded under conditions simulating an engine crankcase environment
for metal wear testing. Wear analyses were performed using a fourball apparatus according to ASTM D 4172. Lubricity of oils
was characterized by ball scar dimensions. Contaminated lubricating oils exhibited lower metal wear indexes than pure lube
oil control samples, even when the former were severely degraded as measured by thickening and loss of alkaline reserve. 相似文献
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天津石化公司PTA装置干燥机采用滴油润滑,由于润滑油黏度高回收困难大,只能按废油降级处理。经过对所使用的油品特性分析及润滑机理的研究,采用滴油润滑,浸油润滑和回收循环再利用相结合方案,大大降低干燥机操作费用。 相似文献
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Wang Zhenhua You Fei Guillermo Rein Jiang Juncheng Han Xuefeng Han Junhua Sun Wei 《火与材料》2018,42(7):770-781
This study aims to develop a complete methodology for assessing flammability hazards of typical fuels (ie, transformer oil, hydraulic oil, gear oil, and lubricating grease) used in a wind turbine nacelle by combining different experimental techniques such as thermogravimetric analysis and cone calorimetry. Pyrolysis properties (onset temperature, temperature of maximum mass loss rate, and mass residue) and reaction‐to‐fire properties (ignition time, heat release rate, mass loss rate, and smoke release rate) were determined and used for a preliminary assessment of thermal stability and flammability hazards. Additional indices, for ignition and thermal behavior (effective heat of combustion, average smoke yield, and smoke point height, heat release capacity, fire hazard parameter, and smoke parameter, were calculated to provide a more advanced assessment of the hazards in a wind turbine. Results show that pyrolysis of transformer oil, lubricating grease, hydraulic oil, and gear oil occur in the range of 150°C to 550°C. Lubricating grease and transformer oil show the higher and lower thermal stabilities with maximum pyrolysis rate temperatures of 471°C and 282°C, respectively. The measured relation between ignition time and radiant heat flux agrees well with Janssens method (a power of 0.55). The aforementioned indices appear to provide a reasonable prediction of performance under real fire conditions according to a full‐scale fire test documented by Declercq and Van Schevensteen. The results of the study indicate that transformer oil is the easiest to ignite while lubricating grease is the most difficult to ignite but also has the highest smoke production rate; that transformer oil has the highest heat release rate while gear oil has the lowest; and that the fire hazard parameter is the highest for transformer oil and the smoke parameter is the highest for lubricating grease. The potential of this type of work to design safer wind turbines under performance‐based approaches is clearly clarified. 相似文献
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介绍国产小型氯气透平压缩机的内部流程。针对小型氯气透平压缩机运行中出现的各种问题(轴振动波动大、漏氯气、压缩机性能下降、油压低等),给出相应的解决措施。提出生产中的注意事项和控制措施,以确保压缩机长期、安全、稳定、高效运行。 相似文献
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本文介绍了国内外高速线材轧机的发展状况及其生产工艺,着重论述了高速线材轧机投产前应对其液压、润滑系统管线进行化学清洗、油冲洗的必要性及清洗的范围、方法和应达到的质量标准. 相似文献