Minimising the environmental footprint of industrial-scaled cleaning processes by optimisation of a novel clean-in-place system protocol
Minimising the environmental footprint of industrial-scaled cleaning processes by optimisation of a novel clean-in-place system protocol
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通过优化新颖的就地清洁系统协议，最大限度地减少工业规模清洁过程的环境足迹
DOI：
10.1016/j.jclepro.2015.07.114
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发表时间：
2015
影响因子：
11.1
通讯作者：
Palabiyik I
中科院分区：
文献类型：
--
作者：
Palabiyik I
清洗加工设备中的食物污垢沉淀物既昂贵又耗时。污垢沉积是由于物质与表面的粘连和材料元素之间的粘合而形成的。粘结剂和粘结剂故障中的一种或两种都可能导致清洗。在这项研究中，目的是研究粘合材料的去除动力学，并设计一种新的工业规模的粘结材料就地清洗(CIP)方案，以减少清洗过程对环境的影响。检测到不同的变量控制着清除粘结物的清洗过程。在清洁的初始阶段，温度没有被发现是一个显著的变量。由于弱结合作用的破坏，流体机械去除沉积物顶层时，清洗水的速度控制着清洗的进行。在清洗后期，速度和温度都对清洗有显著的贡献，这表明需要流体动力和流变学的变化来克服沉积层与表面之间的粘附力。因此，由于清洗过程中存在不同的清洗机制，提出了一种新的“两步CIP方案”。与目前加工厂使用的传统一步CIP协议相比，该协议在不降低清洗效率的情况下，能耗降低了40%。
Cleaning of food fouling deposits in processing equipment is costly and time consuming. Fouling deposits form as a result of adhesion of species to the surface and cohesion between elements of the material. Cleaning can result from either or both adhesive and cohesive failure. In this study, the aim was to investigate the removal kinetics of an adhesive material and to design a novel cleaning in place (CIP) protocol for these kinds of materials at industrial scale to reduce environmental impact of cleaning processes. It was detected that different variables controlled the cleaning process in removal of adhesive deposit. Temperature was not found as a significant variable in the initial stage of cleaning. Velocity of cleaning water controlled the cleaning at this stage when top layers of the deposit were removed by fluid mechanical removal due to breakdown of weak cohesive interaction. In the later cleaning stage, both velocity and temperature significantly contributed to cleaning, which suggested that both hydrodynamic forces and rheological changes are needed to overcome adhesion forces between the deposit and surface. Hence, a novel “two step CIP protocol” was proposed due to existence of different mechanisms in cleaning. When compared with conventional one step CIP protocols currently used in the processing plants, the proposed CIP protocol reduced the energy consumption by 40% without decreasing the cleaning efficiency.
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