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- 저자 : Ruting Wang (검색결과 2 건)
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Quan Li,Zongyong Wang,Ruting Lin,Shuai Li,Chao Wang 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.11
This paper adopts the standard k-ε model and mixture model of the FLUENT code to numerically analyze the components characteristics of the gravity separator. It intends to involve several combinations of four types of rectifiers and two types of coalescers of corrugated plates to optimize the structure of the components. Numerical simulation analysis is carried out on the synergistic effect of the reflective inlet component, the rectifier of square grids, and the coalescer of perforated corrugated plates under variable working conditions. The results illustrate that when the distance between the rectifier and the separator’s head is L 1 = 3/4 D, the width L 2 = 1/4 D, and the plate spacing L 3 = 1/10 D, the separation effect gets improved. Additionally, the perforated corrugated plates prove better effects of rectification and coalescence. And when the distance between the coalescer and the head is L 4 = 25/183 L and the elevation angle α = 2.5°, the separation performance will be further improved. What’s more, the influence of the Reynolds number (Re i , from 5640 through 8297 in the inlet component) and the volume fraction of the dispersed phase (from 5 % through 30 %) on the separation effects of various combination conditions of the internal components has also been investigated. As the former increases, the combined of reflective inlet component, rectifier and coalescer will perform the best separation effects. As the latter increases, the separation efficiency of low-oil ratio of oil-water mixture of the jointly structured separator will increase the most.
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Xuquan Huang,Xiuqing Xie,Zhuo Liu,Anyi Huang,Zaiqian Wang,Ruting Wang,Xiaorong Zhao 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.8
Massive shield waste slurry generated in shield tunnel construction is difficult to deal with because of its high water content (WC). Only when the WC of waste slurry is reduced to 40% − 60% it can be further disposed and reutilized. Three inorganic materials including attapulgite (AT), montmorillonite (MT) and water-washed kaolin (WK) were utilized to dehydrate the shield waste slurry and found that the WC of shield waste slurry dropped to 48.3%, 48.2% and 49.6% with 12.5% AT, 10% MT, and 12.5% WK as the desiccant, respectively. To enhance the dehydration efficiency, a composite desiccant was prepared with AT, MT and WK for the rapid dehydration of waste slurry. The optimized ratio of composite desiccant for AT: MT: WK was decided as 3.23%: 3.50%: 3.40% by response surface methodology based on Box-Behnken design, corresponding with the predicted WC as 44.9%. The WC of shield waste slurry can be decreased to 44.1% after the waste slurry has been dehydrated with the optimal composite desiccant after 6 days. The pH value of solidified shield waste slurry cured with the optimal composite desiccant was approximately 10.5, benefiting the further disposal and resource reutilization of shield waste slurry. The shield waste slurry was characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy. The results revealed that hydration products came into being during the hydration reaction when the shield waste slurry was cured with desiccant. The hydration products refabricated the microscopic lamellar structure of the waste slurry, squeezed the interlayer gap and drove the interlayer water away, leading to the depression of the WC of waste slurry.
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