Study on the influence of cleaning agent on the cleaning effect of palm oil on ships&nbsp;

LIU Xiaochao, ZHANG Bin, WU Wanqing, ZHANG Gaoyu

doi:10.16411/j.cnki.issn1006-7736.2025.01.017

Journal of Dalian Maritime University >

2025 , Vol. 51 >Issue 1: 163 - 170

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2025.01.017

Study on the influence of cleaning agent on the cleaning effect of palm oil on ships

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（Marine Engineering College, Dalian Maritime University, Dalian 116026, Liaoning，China）

Online published: 2025-01-09

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Abstract

In order to explore the influence mechanism of cleaning agent on the cleaning effect of chemical tanker during tank washing, palm oil cleaning experiment was carried out based on self-built experimental platform. Combined with FLUENT numerical simulation, the influence of cleaning water temperature and ethanol concentration in cleaning water on the cleaning effect of palm oil was systematically analyzed. The results showed that with the increase of cleaning water temperature, the adhesion of residual palm oil was decreased, and the cleaning effect of residual palm oil on the wall was accelerated at the initial stage of washing (0-8s). The cleaning speed of cleaning water at 30℃ and 40℃ was 3%/s and 6%/s, respectively, which was significantly higher than that of cleaning water at 20℃. With the increase of the concentration of cleaning agent added to the rinsing water, the viscosity of the oil alcohol mixture is critically affected. In the early stage of rinsing (0-8s), the higher concentration of cleaning water can effectively reduce the viscosity of the palm oil-ethanol mixture, thus improving the cleaning effect. With the extension of washing time (8-15s), the influence of cleaning water concentration on cleaning effect is gradually weakened. The influence degree of cleaning water temperature and concentration on the cleaning effect is compared, and it is found that the cleaning water concentration has a great influence on the cleaning effect at 0-2s and 12-15s, and the cleaning water temperature plays a key role in the cleaning effect at 5-10s. In order to reduce the consumption of cleaning agent and shorten the cleaning time, it is recommended to use cleaning water mixed with high concentration of cleaning agent to quickly flush the chemical tank during the pre-washing stage. After pre-washing, rinse the chemical tank with hot water.

Key words： chemical tanker; palm oil; cleaning agent concentration; cleaning water temperature; cleaning effect

Cite this article

LIU Xiaochao, ZHANG Bin, WU Wanqing, ZHANG Gaoyu . Study on the influence of cleaning agent on the cleaning effect of palm oil on ships [J]. Journal of Dalian Maritime University, 2025 , 51(1) : 163 -170 . DOI: 10.16411/j.cnki.issn1006-7736.2025.01.017

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