共查询到18条相似文献,搜索用时 78 毫秒
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介绍了板式蒸发器的主要结构及工作原理,通过对板式蒸发设备表面成垢机理及结垢特点的分析,明确了供料不足、蒸汽太大、进料温度过低是造成结垢的主要原因.提出了控制进料流量和速度,改变加热介质以及加强乳品蒸发过程的浓度控制等措施,以便预防板面结垢. 相似文献
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介绍了乳品工业中对产品的安全和设备的动转有巨大影响的结垢问题,简述了结垢的形成、影响因素及相应的预防措施。 相似文献
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蒸发器的结垢问题是我们常见但又非常头疼的问题,结垢使得蒸发器的蒸发效率大大降低,热损耗增加,甚至使蒸发器不能正常工作或损坏。结合酒精糟分离清液蒸发操作的实际经验,对蒸发器结垢的成因进行了分析,总结了蒸发器垢层的预防与消除措施,提出了几种值得推广的简单有效防止蒸发器结垢的方法。 相似文献
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阐述了蒸发器结垢给生产所造成的危害,提出了混合油净化、降低混合油中水分和常压蒸发为负压蒸发等方面防止结垢的方法和措施。 相似文献
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蒸发器结垢的危害及防止 总被引:1,自引:1,他引:1
蒸发器的结垢会造成毛油残溶增高 ,易引起蒸发“液泛” ,热能消耗增大 ,粕残油升高 ,降低毛油质量等方面阐述了给生产所造成的危害 ,并提出了在生产中应在混合油净化、降低混合油中水分和有条件的企业可以改常压蒸发为负压蒸发等几方面注意防止结垢的方法和措施 ,以供油脂行业同仁们参考。 相似文献
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螺旋板式换热器是换热器的一种。在焦化厂粗苯生产中多处使用到了螺旋板式换热器。但螺旋板式换热器结垢导致换热效果不佳成为影响生产的重要问题。因此,有效的阻止结垢成为生产的关键。 相似文献
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Membrane separation processes have become part of the set of basic unit operations for dairy process design and product development. These processes are employed in a variety of separation and concentration duties, but in all cases, the membranes must be cleaned regularly to remove both organic and inorganic material deposited on the surface from the fluid stream being processed. Cleaning is a vital step in maintaining the permeability and selectivity of the membrane and is necessary to return the plant to its original capacity, to minimize risks of bacteriological contamination, and to produce acceptable products. Caustic-, acidic-, and enzyme-based cleaners may be used for membrane cleaning and are usually formulated with additives to best match the specific cleaning duty. Cleaning generates significant volumes of wastewater and reduces membrane life and plant productivity, so each regime must be optimized with respect to concentration, order and duration of cleaning steps, temperature, pressure, and flow rate. This article reviews the key mechanisms governing cleaning performance and suggests directions by which further optimization may be achieved. 相似文献
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酒糟离心液降膜蒸发过程中结垢的实验研究 总被引:1,自引:0,他引:1
在宽0.5m、高1.0m的点窝状异形竖板传热元件上进行了酒精离心液的结垢的实验研究,分析了酒糟离心液絮垢的形成过程,讨论了影响结垢的主要因素,提出了减缓成垢的措施。 相似文献
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Magnetic Treatment of Milk and Surface Treatment of Plate Heat Exchangers: Effects on Milk Fouling 总被引:1,自引:0,他引:1
After milk property effect was eliminated, relative fouling rates of electropolished stainless steel, 304 stainless steel, titanium, polysiloxane and Teflon were 0.99,1.00,1.01,1.14, and 1.20, respectively. No significant reduction of cleaning time was found on the Teflon-coated plate although Teflon had significantly larger contact angles in both surface-water-air and surface-water-octane than did stainless steel. Magnetic field treatment of milk and calcium phosphatase solution did not significantly affect fouling rates or type of calcium phosphate crystals in deposits. 相似文献
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微滤膜的污染与清洗保养 总被引:1,自引:1,他引:1
微滤是目前所有膜技术中应用最广、经济价值最大的技术。但在微滤过程中存在膜污染现象,极大地影响了微滤技术的实际应用。文章概述了膜污染的定义、膜污染的影响因素、防止膜污染的措施、膜污染的清洗及保养方法。 相似文献