富勒型篦冷机的性能特点和技术改造

富勒型篦冷机具有急冷熟料、热回收效率高和冷却效率高等性能。自1985年引进富勒篦冷机设计和制造技术以来，我国的篦冷机技术已完成了第一代、第二代、茅三代的技术更新和发展历程。针对第二篦冷机一些固有的缺陷，巢湖铁道水泥厂采用第三代篦冷机技术，对原609S-819S／809S-1025S型第二代篦冷机进行了改造并获成功。改造4年来，篦冷机运行稳定，维修较少，经济效益明显。     

1 000t/d生产线的技术改造

青铜峡水泥集团l000t／d预分解窑生产线，自投产以来，因部分辅机及工艺设备问题，一直处于不正常状态，熟料产量低。质量差。后对该生产线进行了多次改造，主要改造内容为：改造熟料斗式输送机；将生料提升机由链斗式改为胶带斗式提升机；改进窑尾密封；对TD分解炉进行扩客改造；改进喂煤系统；对第二代TC型篦冷机进行换代改造。技改后，窑运转率、产量提高，熟料质量明显改善。     

煤气初冷器喷洒洗萘工艺的改进

针对初冷器喷洒洗萘存在的堵塞和阻力大等问题，相应采取了改进工艺和调整操作参数等措施，即确保了出厂煤气的质量，又提高了生产的安全性。     

甲烷化工艺中用氨冷器替代分子筛吸附器的可行性研究

以某30万t/a合成氨装置净化工序的甲烷化工艺为研究对象,探讨了甲烷化工艺中用氨冷器代替分子筛吸附器的可行性。通过模拟计算,确定了增设氨冷器后的甲烷化工艺流程;分析了删除分子筛吸附器对氨合成的影响;进行了氨冷器和分子筛吸附器的投资评估对比;结果表明,甲烷化工艺中用氨冷器替代分子筛吸附器,不仅工艺可行,且装置投资降低477.76万元。     

Effect of emulsion temperature on physical properties of palm oil-based margarine

Margarines made from refined, bleached, and deodorized palm oil at different emulsion temperatures showed no significant difference in their consistency, polymorphic behavior, and solid fat content (SFC) during storage, although differences were observed during processing. The emulsion temperatures studied were 40, 45, and 50°C, with other parameters such as emulsion flow rates, tube cooler temperature, and pin rotor speed kept constant. The SFC developed during processing and storage at 28°C was measured to evaluate the quality of margarine. The emulsion contained no SFC at any emulsion temperature studied. However, the amount of SFC in the perfector or tube cooler unit increased to 15.9, 13.9, and 15.6% in margarine produced at emulsion temperatures of 40, 45, and 50°C, respectively. At 40°C, the lowest SFC was developed during storage even though this margarine had the highest consistency. The softening point of this sample was moderately high and closely related to the type of crystal developed, which was a mixture of β′ and β crystals. Emulsion at 45°C gave the most stable margarine consistency and SFC with crystal in the β′ form even after the fourth week. At 50°C, moderately soft product was produced, which might be undesirable for some applications, although the crystals were in the β′ form.     

Effect of scraped-surface tube cooler temperatures on the physical properties of palm oil margarine

The effects of scraped-surface tube cooler temperatures on the isothermal solid fat content (SFC) of palm oil margarine during processing and on margarine consistency (yield value, g/cm²), SFC, and polymorphic changes in storage were studied. SFC was measured in the mixing tank after leaving the tube cooler and the pin worker. The SFC at the tube cooler exit was proportional to the amount of cooling; a higher SFC was produced by more extreme cooling treatment. The SFC of all margarines were reduced in the pin worker, and the reduction was related to the initial SFC profile of palm oil. Margarine samples were stored at 28°C for 28 d and tested daily. Margarine processed at 25°C in the tube cooler had the highest consistency and the least change in SFC, but by the second week crystals had transformed into the β form. Uniform product consistency and SFC were observed in margarines processed at 20 and 15°C. These margarines retained the β′ crystal form for 3 and 4 wk, respectively. The best palm oil margarine was obtained with a tube cooler temperature of 15°C and a residence time of 1.8 min.     

碳酸丙烯酯脱碳装置技术改造小结

在碳丙脱碳装置中增加了贫液氨冷器 ,改造了碳丙泵 ,增设了变换气氨冷器 ,从而提高了碳丙脱碳装置的吸收和再生效果     

空冷器对吸收稳定系统的影响

为保证吸收塔的吸收效果,进而保证产品质量,分析了影响吸收效果的因素,找出了进入吸收塔的压缩富气温度是主要影响因素,提出应将空冷器电机改装为变频电机,可控制进入吸收塔压缩富气的温度,既节能,又方便操作。     

冷渣机装置的结构改进

热电车间75t／h循环流化床煤锅炉除渣系统,运行了一段时间后,辅助设备百叶滚筒冷渣机出现大量漏渣,影响了设备的正常运行,并且对环境造成了严重的污染。通过对存在问题进行了分析和论证,从结构上对冷渣机进行了改进。改进后,既满足了生产需要,同时又减少了环境污染。     

横管初冷器阻力增大原因分析与改进

介绍了横管初冷器在运行中存在的问题并进行改进,解决了初冷器阻力大、冷却效果差、蒸汽吹扫频繁的问题,实现了横管初冷器的连续、稳定运行。