废润滑油的回收与再生利用

阐述了废润滑油的危害,回收利用的意义,介绍了国内外废润滑油再生的工艺技术和最新进展。     

车用润滑油的再生研究

做好车用润滑油的再生工作 ,可以说是扩大润滑油来源和节约润滑油的重要措施之一。为了提高已用润滑油的再生技术 ,本文针对已用润滑油质量变化的不同情况 ,对其不同的再生方法加以分析和研究     

车用润滑油的再生研究

做好车用润滑油的再生工作，可以说是扩大润滑油来源和节约润滑油的重要措施之一。为了提高已用润滑油的再生技术,本文针对已用润滑油质量变化的不同情况，对其不同的再生方法加以分析和研究。     

日本石油能源的再生——废润滑油的再资源化

日本为弥补能源之不足,十分重视废润滑油的再生利用。各类工业(建筑、矿业、电气、运输、通讯和农业、渔业等)用润滑油销售量分别为:     

灰分对柴油机微粒捕集器性能及再生的影响

针对柴油机微粒捕集器(diesel particular filter,DPF)再生的可靠性问题,分析DPF灰分的主要成分及来源,灰分在DPF中的沉积过程,灰分对DPF效率及再生过程的影响。分析表明灰分的主要来源是润滑油,为了满足柴油机润滑要求,润滑油中添加了大量的金属成分,产生大量的灰分影响DPF的再生过程。针对灰分的成分及沉积方式,提出使用低金属含量润滑油降低DPF灰分沉积、采用高压空气反吹作为DPF的主要清灰措施。     

废油回收一举数得

<正> 废润滑油回收,既能节约资源,缓和润滑油供需矛盾,又能减少传染,可以收到一举数得之效,因此,急需加强废油回收再生工作。各种机械都需要润滑油来润滑。润滑油在使用过程中,由于混入灰尘、泥沙、水、及受空气的氧化和热分解作用生成的酸类及氧化中间产物生成的树脂和沥清等,使油的酸值增加,老化变质而成为废油。若把这些废油回收上来,加工处理后可以再用。     

铸造废砂再生及其环境影响评价分析

铸造废砂资源化再生循环利用是一种低碳高效节能减排的有效方法.对铸造废砂再生进行了阐述,并对废砂再生进行了环境影响评价分析.     

柴油机使用再生润滑油的摩擦学性能试验研究

为验证发动机使用再生润滑油的可行性,以某公交车柴油机用15W-40润滑油为研究对象,开展了再生润滑油理化指标、摩擦学性能和发动机摩擦功试验。结果表明:再生润滑油的理化指标与原润滑油处于同一水平,满足GB11122—2006中黏度等级15W-40柴油机润滑油的黏温性能、抗氧化性能等要求。与原15W-40润滑油相比,再生15W-40润滑油的磨斑直径相对较大,钢球磨斑形貌表面的犁沟相对较长、较深,划痕相对较宽,极压润滑性能相对较差。热机倒拖时,发动机使用两种润滑油的摩擦功相当;冷机倒拖时,再生15W-40润滑油的摩擦功略有降低。     

利用分子蒸馏技术再生废旧润滑油的应用

利用分子蒸馏技术再生废旧润滑油,是将废旧润滑油经过过滤,进入真空薄膜蒸馏脱除轻质组分汽柴油,剩余组分经分子蒸馏进行润滑油基础油的分离和重质杂质组分分离。分子蒸馏是远离沸点的分离,它优越于传统蒸馏利用沸点差来分离,它是在高真空技术发展基础上的一个创新技术。采用分子蒸馏技术再生废旧润滑油,润滑油基础油收率高。     

湿冷汽轮发电机组润滑油系统热量回收利用方法探讨

文章主要介绍了一种对湿冷汽轮发电机组润滑油系统在运行时产生的废热进行利用的方法.本方法节约了电厂运行成本,延长了冷油器使用寿命,提高了机组经济性.     

基于不同润滑油的内燃机轴承性能研究

对内燃机连杆轴承和主轴承进行动力学分析,得到了轴承最大载荷和最小油膜厚度等可靠性参数,进而评估了轴承润滑油消耗和摩擦损失等性能指标。研究发现,与使用15W-40润滑油相比,使用高黏度20W-50润滑油的轴承,其最小油膜厚度、润滑油消耗量和摩擦损失等参数都有很大的改善。     

某型柴油机滑油压力低故障原因分析

针对某型船用柴油机在试验过程中出现的滑油压力偏低的问题,通过系统排查,确定故障系滑油泵衬套脱落,引起滑油泵流量减小所致。在此基础上对柴油机开展了整改。验证结果表明:故障原因定位准确,整改有效。     

在线式滑油品质分析传感测量技术在高速柴油机上应用

分析了高速柴油机运行过程中滑油的变质过程以及其参数的变化以及高速柴油机滑油监测的现状和存在的问题;介绍了在线式滑油品质分析传感测量新技术,并就具体产品的特点和应用进行了分析,指出该技术具有广阔的应用前景。     

An analysis of used lubricant recycling unit in Turkey

In chemical industries such as lube oil recycling units, stakeholders seek to continuously increase the productivity and profitability of the chemical processes to survive in the market. While scholars have investigated technological production options, recycling, and lube oil recycling flows, there is not enough study that evaluates the interplay between the production volume allocation and the recycled oil quality and quantity contingent upon the process temperature and pressure. The results based on a case study in the Kayalar Dorse production in Turkey show that by optimizing the chemical process mix, the volume of the lubricant oil can be increased by 20% at almost zero variable cost increase.     

某船用大功率电机轴承润滑系统的改进

针对柴油发电机轴承润滑系统体积大、可靠性差的状况,提出采用柴油机油代替汽轮机油润滑的方法,并分析了影响轴承润滑的主要因素,在此基础上确定润滑轴承的柴油机油的温度控制范围。试验结果表明,采用柴油机油代替汽轮机油润滑轴承是切实可行的。     

Biodiesel separation and purification: A review

Biodiesel as a biodegradable, sustainable and clean energy has worldwide attracted renewed and growing interest in topical years, chiefly due to development in biodiesel fuel and ecological pressures which include climatic changes. In the production of biodiesel from biomass, separation and purification of biodiesel is a critical technology. Conventional technologies used for biodiesel separation such as gravitational settling, decantation, filtration and biodiesel purification such as water washing, acid washing, and washing with ether and absorbents have proven to be inefficient, time and energy consumptive, and less cost effective. The involvement of membrane reactor and separative membrane shows great promise for the separation and purification of biodiesel. Membrane technology needs to be explored and exploited to overcome the difficulties usually encountered in the separation and purification of biodiesel. In this paper both conventional and most recent membrane technologies used in refining biodiesel have been critically reviewed. The effects of catalysts, free fatty acids, water content and oil to methanol ratios on the purity and quality of biodiesel are also examined.     

Progress in biodiesel processing

Biodiesel is a notable alternative to the widely used petroleum-derived diesel fuel since it can be generated by domestic natural sources such as soybeans, rapeseeds, coconuts, and even recycled cooking oil, and thus reduces dependence on diminishing petroleum fuel from foreign sources. The injection and atomization characteristics of the vegetable oils are significantly different than those of petroleum-derived diesel fuels, mainly as the result of their high viscosities. Modern diesel engines have fuel-injection system that is sensitive to viscosity change. One way to avoid these problems is to reduce fuel viscosity of vegetable oil in order to improve its performance. The conversion of vegetable oils into biodiesel is an effective way to overcome all the problems associated with the vegetable oils. Dilution, micro-emulsification, pyrolysis, and transesterification are the four techniques applied to solve the problems encountered with the high fuel viscosity. Transesterification is the most common method and leads to monoalkyl esters of vegetable oils and fats, now called biodiesel when used for fuel purposes. The methyl ester produced by transesterification of vegetable oil has a high cetane number, low viscosity and improved heating value compared to those of pure vegetable oil which results in shorter ignition delay and longer combustion duration and hence low particulate emissions.     

燃用重油的大功率柴油机滑油净化分析及系统优化

分析了燃用重油造成滑油污染的相关因素、特征及后果.介绍了燃重油柴油机对滑油特性指标要求.针对滑油净化处理装置的使用现状,提出了滑油净化系统优化设计方案,应用表明:优化后的机组滑油污染指标大大降低,有效解决燃用重油造成的滑油污染问题.     

新型柴油机试验车间的设计思路与方案总结

为了满足当今柴油机短时间试车要求,就要使柴油机上台架后即刻处于或经过很短时间后能处于标准的试验工况环境中。为此,作为试车工程设计,必须向试验台提供特定温度的冷却液、润滑油、燃油、进气等试验条件。本文介绍的新型柴油机试验车间采用一系列新的设计并结合计算机集中控制,大大缩短中等功率柴油机的台架试验时间。     

核电应急柴油发电机组滑油低压保护停机控制的设计优化

通过采用转速分段及增加短延时的改进方法,对当前核电应急柴油发电机组滑油低压保护停机控制设计进行了优化。经论证与试验表明:优化后的保护停机控制对机组起动及运行过程均起到了保护作用,同时确保了滑油压力的正常建立,避免了机组因受外部因素影响导致应急保护停机误动作,提高了机组起动的可靠性。该优化方案已经在核电厂应急柴油发电机组控制系统中得到广泛应用。