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Experiment and optimal design of a collection device for a residual plastic film baler

Qi NIU,Xuegeng CHEN,Chao JI,Jie WU

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 4, Pages 347-354 doi: 10.15302/J-FASE-2015077

Abstract: The residual plastic film baler was designed as a package for film strip collection, cleaning and balingand the impurity of film package.The results show that the factors affecting the collection rate of residual film and the impurity ofthe film package are the speed ratio ( ) between the trash removal roller and eccentric collection mechanismwas 88.9% and the impurity of residual film package was 14.2% for the baler.

Keywords： residual film collection device collection rate of residual film impurity of film package optimization

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Liquefaction and impurity separation of oxygen-bearing coal-bed methane

Qiuying LI, Yonglin JU, Li WANG,

Frontiers in Energy 2010, Volume 4, Issue 3, Pages 319-325 doi: 10.1007/s11708-010-0115-9

Abstract: Coal-bed methane (CBM) is a type of clean energy. However, most oxygen-bearing CBM have not yet to be utilized due to limited techniques, and when utilized, the discharged gas leads to resource wastage and environment pollution. In this paper, a liquefaction process is proposed and designed for the specified oxygen-bearing CBM obtained from the Daqing Qingshen gas field. The distillation column is employed to separate the oxygen and nitrogen components present in the CBM. HYSYS software is adopted to simulate the process, and the results reveal that the energy consumption of the whole liquefaction process is low. Moreover, oxygen and nitrogen are nearly removed completely, achieving a high-purity liquefied natural gas product with a high methane recovery rate. The applicability and safety of the liquefaction process are also analyzed. The simulation results can offer references for the separation of the oxygen component from CBM.

Keywords： coal bed methane oxygen-bearing liquefaction distillation

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Antenna-in-Package (AiP) Technology

Yueping Zhang

Engineering 2022, Volume 11, Issue 4, Pages 18-20 doi: 10.1016/j.eng.2021.08.012

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Numerical simulation of liquid falling film on horizontal circular tubes

Fengdan SUN, Songlin XU, Yongchuan GAO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3, Pages 322-328 doi: 10.1007/s11705-012-1296-z

Abstract: The objective of this study is to investigate numerically the flow characteristics of falling film onThe volume of fluid method is used to track the motion of liquid falling film and the gas-liquid interfaceThe velocity distribution and the film thickness characteristics on the top tube, some special flow characteristicsdistributions of the upper and lower parts of the tube are not strictly symmetric and non-uniform, 2) the filmare distinguished, and 5) the liquid feed height plays an important role on the formation of falling film

Keywords： falling film horizontal tube flow characteristics film thickness liquid feeder height

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Retrospect and Prospect of Study on Thin Film Lubrication

Ge Jianbin,Zhang Chaohui,Wen Shizhu

Strategic Study of CAE 2003, Volume 5, Issue 7, Pages 84-89

Abstract:

Thin film lubrication (TFL) has been well studied as a new lubrication regime since the 90s of lastof TFL, which involves the origin of the TFL concept, advancement of measuring technique, TFL's film-forming

Keywords： thin film lubrication ordered film film thickness measurement microstructure

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Thin-liquid-film evaporation at contact line

Hao WANG, Zhenai PAN, Zhao CHEN

Frontiers in Energy 2009, Volume 3, Issue 2, Pages 141-151 doi: 10.1007/s11708-009-0020-2

Abstract: regions: a nonevaporating region, where the liquid is adsorbed on the wall; a transition region or thin-filmThe thin liquid film, with thickness from nanometers up to micrometers, covering the transition regionIn this paper, a review was made of the researches on thin-liquid-film evaporation.The major characteristics of thin film, thin-film modeling based on continuum theory, simulations basedon molecular dynamics, and thin-film profile and temperature measurements were summarized.

Keywords： meniscus thin film contact line disjoining pressure evaporation

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Multi-Component Resource Recycling from Waste Light-Emitting Diode Under Hydrothermal Condition: Plastic Package

Yongliang Zhang,Lu Zhan,Zhenming Xu,

Engineering doi: 10.1016/j.eng.2023.04.008

Abstract: Light emitting diodes (LEDs) have accounted for most of the lighting market as the technology matures and costs continue to reduce. As a new type of e-waste, LED is a double-edged sword, as it contains not only precious and rare metals but also organic packaging materials. In previous studies, LED recycling focused on recovering precious and strategic metals while ignoring harmful substances such as organic packaging materials. Unlike crushing and other traditional methods, hydrothermal treatment can provide an environment-friendly process for decomposing packaging materials. This work developed a closed reaction vessel, where the degradation rate of plastic polyphthalamide (PPA) was close to 100%, with nano-TiO₂ encapsulated in plastic PPA being efficiently recovered, while metals contained in LED were also recycled efficiently. Besides, the role of water in plastic PPA degradation that has been overlooked in current studies was explored and speculated in detail in this work. Environmental impact assessment revealed that the proposed recycling route for waste LED could significantly reduce the overall environmental impact compared to the currently published processes. Especially the developed method could reduce more than half the impact of global warming. Furthermore, this research provides a theoretical basis and a promising method for recycling other plastic-packaged e-waste devices, such as integrated circuits.

Keywords： Waste LED Hydrothermal treatment Recycling Plastic PPA degradation Packaging materials

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Antenna-in-package system integrated with meander line antenna based on LTCCtechnology

Gang DONG,Wei XIONG,Zhao-yao WU,Yin-tang YANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 1, Pages 67-73

Abstract:

We present an antenna-in-package system integrated with a meander line antenna based on low temperaturecircuit (IC) bare chips.A microstrip feed line is used to reduce the interaction between patch and packageThis antenna-in-package system integrated with a meander line antenna was fabricated and the experimental

Keywords： Antenna-in-package (AiP) Meander line antenna Multi-chip module (MCM) Low temperature co-fired ceramic

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Digital design of a combine harvester using virtual prototyping

YAN Chuliang, LI Jie, ZHANG Shuming, YANG Fangfei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2, Pages 159-163 doi: 10.1007/s11465-007-0026-6

Abstract: The grain passed through the sieve easily after the optimization and reduced the loss rate and impurity

Keywords： excellent assembly impurity harvester vibration

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Effects of ionic impurities on crystallization of cobalamin

Baoli SHAO, Hui CHEN, Shuang WANG, Haijun WANG, Shenmin XU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1, Pages 70-74 doi: 10.1007/s11705-009-0293-3

Abstract: It is noted that impurity Mg has a more significant effect than Na in crystal growth of the whole crystallization

Keywords： cobalamin impurity particle addition technique

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Surface-tailoring chlorine resistant materials and strategies for polyamide thin film composite reverse

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5, Pages 564-591 doi: 10.1007/s11705-021-2109-z

Abstract: Polyamide thin film composite membranes have dominated current reverse osmosis market on account of theirsusceptibility of polyamide toward chlorine attack has been regarded as the Achilles’s heel of polyamide thin filmThe advancement in the development of chlorine resistant polyamide thin film composite membranes is reviewed

Keywords： reverse osmosis polyamide thin film composite membranes chlorine resistance surface modification

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Piezoelectric film-actuated motion platform with high resolution

HUA Shunming, ZHANG Hongzhuang, CHENG Guangming, FAN Zunqiang, LIU Jianfang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3, Pages 265-269 doi: 10.1007/s11465-008-0041-2

Abstract: A piezoelectric film-actuated motion platform with high resolution, which can run in two directions within

Keywords： mathematical stick-slip mechanism piezoelectric film-actuated analysis terrific

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Heat and mass transfer of ammonia-water in falling film evaporator

Xianbiao BU, Weibin MA, Huashan LI

Frontiers in Energy 2011, Volume 5, Issue 4, Pages 358-366 doi: 10.1007/s11708-011-0161-y

Abstract: investigate the performance of heat and mass transfer of ammonia-water during the process of falling filmSubsequently, a series of parameters, such as velocity, film thickness and concentration, etc., wereCalculated results show that the average velocity and the film thickness change dramatically at the entrancethat the roll-worked enhanced tube or other enhanced tube can reduce the concentration gradient in the film

Keywords： falling film evaporation ammonia-water heat and mass transfer

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Dynamic analysis of free-surface thin film flows driven by gravity over undulated substrate

Zhaomiao LIU, Xin LIU, Guobin WANG, Hong LIAO,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2, Pages 219-225 doi: 10.1007/s11465-010-0010-4

Abstract: This paper studies thin film flows with free surfaces driven by gravity through two types of undulatedcommenced from Navier-Stokes equations and continuity equation, the exact numerical results of free-surface filmfrom the waviness of the substrate planes profile, height of the triangle plane, and change of the filmheight on film flow dynamics properties are shown.

Keywords： waviness triangle height film thickness streamlines separation vortex

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Improved film evaporator for mechanistic understanding of microwave-induced separation process

Xin Gao, Dandan Shu, Xingang Li, Hong Li

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4, Pages 759-771 doi: 10.1007/s11705-019-1816-1

Abstract: Microwave-induced film evaporation separation process has been reported recently to separate the polarTo carry out these investigations, a novel microwave-induced falling film evaporation instrument wasimprovement of the enhancement effect of microwave-induced separation was observed based on the improved film

Keywords： process intensification microwave falling film evaporation separation azeotrope