延长导热油使用寿命的方法

讨论了影响导热油使用寿命的因素。揭示了导热油在高温运行中的变化趋势呈曲线状，提出了导热油在线清洗的方法，通过清除导热油中的垃圾，减缓导热油的变化速率，使导热油在高温运行的变化速率成线性状，以延长导热油的使用寿命。     

高效换热器在双环戊二烯解聚系统的研究应用

以C9裂解产品为热聚原料的双环戊二烯解聚系统,原设计采用普通列管式换热器作为解聚物料进料加热器,高温导热油用量大,易结焦,仅运行30 d就需停车清洗;高效单旋式换热器与螺旋板式换热器组合技术的应用,将热聚原料进行切割加热,在气/液段分别选择合理的流速及停留时间,用中温导热油替代高温导热油,已连续运行4个月以上,且未拆开...     

导热油加热系统的清洗

通过分析导热油中污垢的形成机理,将导热油污垢分为三类,并针对不同的类别推荐了相应的清洗方法.同时,提出了稳定工况运行导热油加热系统、添加合适的添加剂预防结垢和定期清洗的运行建议.     

低闪点导热油处理工艺

河南煤化集团商丘龙宇化工导热油运行4年来,由于导热油长期在高温状态下裂解,低沸点物质增高,造成一定的安全危险性,经过对一间歇精馏系统改造,对导热油进行在线闪蒸,使导热油的闪点从处理前的170℃提高到200℃,解决了导热油置换需停车处理的难题。     

导热油加热系统的清洗

通过分析导热油中污垢的形成机理,将导热油污垢分为三类,并针对不同的类别推荐了相应的清洗方法。同时,提出了稳定工况运行导热油加热系统、添加合适的添加剂预防结垢和定期清洗的运行建议。     

PET装置导热油系统再生清洗及节能改造

对传统的PET装置导热油加热系统进行在线再生清洗,导热油指标和生产情况明显好转,改造后,通过新老装置运行情况对比发现,降低高位槽的温度,轻组分排出及时、彻底,轻组分的生成明显减少,导热油的闪点、残碳等指标稳定,能耗降低,系统运行平稳。     

在役导热油系统检修化学清洗常见问题及解决方法

导热油又叫传热油和热载体油,是用于间接传递热量的一类稳定性较好的专用油品。导热油系统主要是以导热油代替其他介质作为热载体进行热交换。以中石油某沥青油库导热油系统检修化学清洗施工为实例,阐述导热油系统在检修化学清洗过程中常见的问题及其解决方法,有效解决导热油系统清洗不彻底、油品污染及传热效率下降等运行问题。     

精密设备高温导热油积炭的清洗方法及清洗剂

正申请公布号:CN105312283A申请公布日:2016.02.10申请号:2014103376628申请人:上海博世科技发展有限公司发明人:胡晓博地址:200333上海市普陀区真北路3370号摘要:本发明提供了一种应用于吹瓶机加热系统中的精密设备高温导热油积炭清洗方法及清洗剂。本发明提供的精密设备高温导热油积碳清洗方法包括:排放旧油,第一次清洗,第二次清洗,第三次     

导热油在线再生装置的介绍与计算分析

聚酯工业中液相导热油在高温使用环境中会发生裂解甚至劣化的现象,从而影响导热油的使用性能。对劣化后的合成导热油的再生工艺流程进行了说明,提出了理论推导得到的导热油中低沸物质量分数、在线再生量、低沸物初始质量分数和再生批次之间的关系式。然后根据具体案例进行了导热油在线再生的计算分析,得出结论:导热油再生比更换导热油有较大的经济性优势;在导热油再生中确定合理的再生低沸物质量分数,能够以较小的能耗代价完成再生导热油的再生;另外选取适当大一点的单批次再生量,也有利于降低再生过程的能耗。     

太阳能光热发电中导热油结焦机理与清洗技术的研究

介绍了太阳能光热发电系统的组成,设计开发了槽式光热发电站中导热油循环系统的工艺流程,给出了导热油循环回路系统中注油和排油的方法。研究了太阳能光热发电中导热油结焦积垢的机理,分析了导热油结焦积垢清洗最常用的两种方法,即无机清洗剂清洗和有机清洗剂清洗,最后总结了有机清洗剂的清洗机理和清洗效果。     

劣化导热油的离心沉降处理探索

采用离心沉降方法处理受到粗对苯二甲酸（TA）污染和劣化的加氢精制系统导热油,对离心沉降时间、离心沉降转速等工艺条件对导热油的固体杂质和胶质含量、酸值的影响进行了讨论,确定了最佳的工艺条件,试验结果表明离心沉降的处理方法可以显著降低导热油中的固体杂质和胶质含量及酸值。     

导热油加热在超高分子量聚乙烯滤板生产中的应用

对超高分子量聚乙烯滤板生产的各种加热方式进行了分析比较,阐述了导热油加热的优越性,设计了一套导热油加热冷却系统,并将其应用到超高分子聚乙烯滤板的实际生产中,取得了良好的效果。     

简述树脂(涂料类)制备中的加热方法

简述了树脂(涂料类)制备中的各种加热方法及其优缺点,着重论述了导热油加热系统在树脂(涂料)生产制备中的应用及设计中的工艺优化设计。     

导热塑料管应用于闭式冷却塔的实验研究

传统闭式冷却塔采用的金属盘管抗冻和耐腐蚀性差,严重制约了闭式冷却塔的推广使用。导热塑料管具有良好的抗冻性、耐腐蚀性和阻垢性,理论计算在闭式冷却塔中应用具有可行性。本文通过实验研究,得出现有的导热塑料管抗冻性可以满足闭式冷却塔需求,但是导热系数还偏小,大规模推广替代金属管还需要继续提高管材的导热系数。     

Estimation of the Maximum Efficiency of a Heat Recovery Burner

Estimates are obtained for the maximum efficiency of a system consisting of a heat recovery burner connected to an ideal Carnot heat engine. The burner serves as a heater of the ideal heat engine, and the cold side is at the ambient temperature. Combustion products heat the hot wall of the ideal engine and then transfer heat to the combustible mixture supplied to the combustion chamber. Recovery of the heat of the combustible mixture occurs through the heat-conducting wall of a countercurrent heat exchanger, in which the combustion products and the combustible mixture move toward each other in the channels connected by a heat-conducting partition. An estimate is obtained for the total efficiency of the system, which is defined as the ratio of the net power of the ideal engine to the chemical energy flux reaching the burner device. It is shown that the total efficiency of the system can approach the Carnot-cycle efficiency with the maximum possible temperature of the hot side of the ideal heat engine.     

Ni/MgO Catalysts on Structured Metal Supports for the Air Conversion of Low Alkanes into Synthesis Gas

Catalysis in Industry - Heat-resistant, heat-conducting, and selective catalysts based on nickel highly porous foam-cellular material (HPFCM) and a mesh support are developed for the air conversion...     

The viscosity of dimethyl silicone oil and the concentration of absorbed air

We studied the viscosity behavior of 500 cSt dimethyl silicone oil with considerable concentration of absorbed air. For this purpose, a Couette rheometer with a transparent rotating outer cylinder and a fixed inner cylinder was established, in which the ambient pressure is controlled by a piston–cylinder apparatus. Careful torque calibration and equilibrium examination for the air–silicone–oil mixture were carried out. In the range of ambient pressure from 1 to 5 atm, corresponding to the air molar fraction from 11 to 35%, it was found that viscosity of the silicone oil decreases monotonically as the air concentration increases. The viscosity variation can be explained by the Eyring's model in which the free energy of activation is modified to account for the nonideality of the air–silicone–oil mixture. The excess free energy used to fit the viscosity variation is approximately equal to that used in the Krichevsky–Ilinskaya equation, which accounts for the nonideal solubility of the air–silicone–oil solution. The activation energy in the Arrhenius equation for viscosity–temperature relationship is identified as the activation enthalpy. © 2011 American Institute of Chemical Engineers AIChE J, 2011     

Thermophysical Properties of Carbon-Carbon Materials Based on Graphite Foam

Refractories and Industrial Ceramics - Low density heat-conducting carbon-carbon materials containing coke from 2.8 to 40 wt.% and with density varying in the range from 0.065 to 0.81 g/cm3 are...     

Fabrication,heat-treatment and formation mechanism of MgO fiber using propionic acid as ligand

Magnesium oxide (MgO) fibers were prepared by sol-gel method with magnesium propionate as precursor. Pure micrometer-sized MgO fibers were obtained after pretreated in two different atmospheres (water steam and air). The structure diagram of magnesium propionate precursor was achieved by analyses of the precursor fibers. The MgO fibers pretreated in different atmospheres were characterized by the use of XRD, FT-IR, TG-DSC and SEM analytical techniques, and the heat-conducting property of fibers was characterized by thermal conductivity test. The results show that Mg(OH)₂ crystalline phase appeared at the temperature range from 300 °C to 400 °C during the heat-treating process in water steam. They also show that the water steam is beneficial for the removal of organics, the crystallization of the fibers and the formation of dense, smooth and crack free fibers, but leads to the increase of the heat-conducting property of MgO fibers.     

Filled cyanoacrylate adhesive compositions

Filled cyanoacrylate adhesive compositions possessing electro-and heat-conducting properties have been developed. These compositions are recommended for panel wiring of electro-and radioelements and hermetic sealing of aluminum casting.