Mechanisms of Liquid and Solid Contaminant Removal from Cylindrical Tubes

摘要克里斯汀·格兰特北卡罗来纳州立大学CTS-9500399金属表面污垢是化工和食品加工行业中普遍存在的问题。由于换热表面积增加、能量损失、维护和机组停机造成的生产损失，结垢的换热表面会导致成本增加。由于清洗效率低，产量低，生产不规范，造成了巨大的经济损失。在美国，与食品和化学工业的污染相关的成本估计为每年18亿至29亿美元。拟议的研究集中在两个特定的工艺领域，其中去污是一个主要问题：(1)清除高温牛奶加工(例如无菌工艺)过程中从不锈钢管道中产生的污垢残留物；(2)从不锈钢管道中清除油类。

ABSTRACT Christine Grant North Carolina State University CTS-9500399 The fouling of metal surfaces is a widespread problem in the chemical and food processing industries. Fouled heat transfer surfaces lead to increased costs due to added heat transfer surface area, energy losses, maintenance, and production losses caused by unit down-time. Poor yield and off-specification production due to inefficient cleaning results in substantial economic losses. In the United States the costs associated with fouling in the food and chemical industry have been estimated to be 1.8-2.9 billion dollars per year. The proposed research focuses on two specific process areas where decontamination is a major problem: (1) the removal of fouling residues generated during high temperature milk processing (e.g., aseptic processes) from stainless steel pipes and (2) the removal of oils from stainless steel tubes.