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Process Intensification in Pneumatically Agitated Slurry Reactors Review

Shujun Geng, Zai-Sha Mao, Qingshan Huang, Chao Yang

Engineering 2021, Volume 7, Issue 3,   Pages 304-325 doi: 10.1016/j.eng.2021.03.002

Abstract:

Pneumatically agitated slurry reactors, including bubble column reactors and airlift loop reactors (ALRs), are important gas–liquid–solid multiphase reactors. These reactors have been widely applied in many processes, especially in the biological fermentation and energy chemical industry, due to their low shear stress, good mixing, perfect mass-/heat-transfer properties, and relatively low costs. To further improve the performance of slurry reactors (i.e., mixing and mass/heat transfer) and to satisfy industrial requirements (e.g., temperature control, reduction of back-mixing, and product separation), the process intensification of slurry reactors is essential. This article starts by reviewing the latest advancements in the intensification of mixing and mass/heat transfer in these two types of reactors. It then summarizes process-intensification methods for mixing and separation that allow continuous production in these slurry reactors. Process-intensification technology that integrates directional flow in an ALR with simple solid–liquid separation in a hydrocyclone is recommended for its high efficiency and low costs. This article also systematically addresses vital considerations and challenges, including flow regime discrimination, gas spargers, solid particle effects, and other concerns in slurry reactors. It introduces the progress of numerical simulation using computational fluid dynamics (CFD) for the rational design of slurry reactors and discusses difficulties in modeling. Finally, it presents conclusions and perspectives on the design of industrial slurry reactors.

Keywords: Slurry reactors     Pneumatic agitation     Bubble column     Airlift loop reactor     Process intensification     Solid    

Design of damping valve for vehicle hydro pneumatic suspension

DONG Mingming, HUANG Hua, GU Lian

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 97-100 doi: 10.1007/s11465-008-0014-5

Abstract: According to the design features of a hydro pneumatic spring, the necessity of a separate damping valveThe design method and damping valve structure are useful guides for hydro pneumatic suspension, especially

Keywords: ability     pneumatic     necessity     flowrate     equivalent linearization    

Design and modeling of a novel soft parallel robot driven by endoskeleton pneumatic artificial muscles

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0678-2

Abstract: light weight, high efficiency, non-polluting characteristic, and environmental adaptability provide pneumaticthis paper, a soft robot with 10 soft modules, comprising three uniformly distributed endoskeleton pneumatic

Keywords: pneumatic artificial muscles     soft robot     modeling approach     principle of virtual work     external load    

A pneumatic cylinder driving polyhedron mobile mechanism

Wan DING, Sung-Chan KIM, Yan-An YAO

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 55-65 doi: 10.1007/s11465-012-0301-z

Abstract:

A novel pneumatic cylinder driving polyhedron mobile mechanism is proposed in this paper.The mechanism is comprised of 5 tetrahedrons which includes a pneumatic cylinder in each edge.

Keywords: mobile mechanism     polyhedron     cylinder    

Simulation of horizontal slug-flow pneumatic conveying with kinetic theory

GU Zhengmeng, GUO Liejin

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 336-340 doi: 10.1007/s11708-007-0050-6

Abstract: Wavelike slug-flow is a representative flow type in horizontal pneumatic conveying.can represent the physical characteristics of the non-suspension dense phase flow of wavelike slug pneumaticThe experiment in this paper introduced a new idea for the numerical calculation of slug-flow pneumatic

Keywords: velocity distribution     detailed     slug-flow     gas-solid     theory    

Design and experiment of a novel pneumatic soft arm based on a deployable origami exoskeleton

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0770-2

Abstract: Soft arms have shown great application potential because of their flexibility and compliance in unstructured environments. However, soft arms made from soft materials exhibit limited cargo-loading capacity, which restricts their ability to manipulate objects. In this research, a novel soft arm was developed by coupling a rigid origami exoskeleton with soft airbags. The joint module of the soft arm was composed of a deployable origami exoskeleton and three soft airbags. The motion and load performance of the soft arm of the eight-joint module was tested. The developed soft arm withstood at least 5 kg of load during extension, contraction, and bending motions; exhibited bistable characteristics in both fully contracted and fully extended states; and achieved a bending angle of more than 240° and a contraction ratio of more than 300%. In addition, the high extension, contraction, bending, and torsional stiffnesses of the soft arm were experimentally demonstrated. A kinematic-based trajectory planning of the soft arm was performed to evaluate its error in repetitive motion. This work will provide new design ideas and methods for flexible manipulation applications of soft arms.

Keywords: pneumatic soft arm     soft airbag     deployable origami exoskeleton     bistable characteristics     cargo-loading    

Modular crawling robots using soft pneumatic actuators

Nianfeng WANG, Bicheng CHEN, Xiandong GE, Xianmin ZHANG, Wenbin WANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 163-175 doi: 10.1007/s11465-020-0605-3

Abstract: In this work, several crawling robots are developed using two types of soft pneumatic actuators (SPAs

Keywords: soft robot     soft pneumatic actuator     kinematic model     crawling robot     modular design    

Static balancing of planar articulated robots

Giuseppe QUAGLIA,Zhe YIN

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 326-343 doi: 10.1007/s11465-015-0355-9

Abstract: solution consists of linkages and springs; the other consists of pulleys, cross mechanisms and (hydro-) pneumaticPneumatic, hydro-pneumatic and mechanical springs are discussed and their parameters are decided according

Keywords: robotics     static balancing     pneumatic spring     mechanical spring     torque compensation    

Posture control of a 3-RPS pneumatic parallel platform with parameter initialization and an adaptive Article

Guo-liang TAO,Ce SHANG,De-yuan MENG,Chao-chao ZHOU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 3,   Pages 303-316 doi: 10.1631/FITEE.1500353

Abstract: A control algorithm for a 3-RPS parallel platform driven by pneumatic cylinders is discussed.

Keywords: Parameter initialization     Adaptive robust control     Parallel mechanism     Pneumatic cylinders    

Control of the agglomeration of crystals in the reactive crystallization of 5-(difluoromethoxy)-2-mercapto-1

Yongli WANG, Shuyuan MA, Xiaodong Lü, Chuang XIE

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 423-431 doi: 10.1007/s11705-012-1211-7

Abstract: We found that the low feeding rate of acetic acid, high crystallization temperature, low agitation rate

Keywords: benzimidazole (DMB)     reactive crystallization     agglomeration     feeding rate     crystallization temperature     agitation    

Analysis of actuating mechanics characteristics for a flexible miniature robot system

YU Lianzhi, YAN Guozheng, MA Guanying, ZAN Peng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 66-70 doi: 10.1007/s11465-008-0006-5

Abstract: The system is actuated by a pneumatic rubber actuator with three degrees of freedom, and it holds itsAn electro-pneumatic pressure system is designed to control the motion of the robot.

Keywords: calculation     consistent     endoscope inspection     electro-pneumatic     miniature endoscope    

Al-NaOH-Composited Liquid Metal: A Fast-Response Water-Triggered Material with Thermal and Pneumatic Article

Bo Yuan, Xuyang Sun, Jing Liu

Engineering 2020, Volume 6, Issue 12,   Pages 1454-1462 doi: 10.1016/j.eng.2019.08.020

Abstract: several seconds along with gas production, indicating its big potential to be used as a thermal and pneumatic

Keywords: Liquid metal     Water-triggered materials     Self-heating materials     Soft actuator    

Original position statistic distribution analysis characterization of niobium on the vertical section of casting of superalloypneumatic plate wheel

Wang Haizhou,Li Meiling,Zhuang Jingyun

Strategic Study of CAE 2011, Volume 13, Issue 10,   Pages 19-27

Abstract: text-align: justify;">The distribution of niobium on the vertical section of casting of GH169 superalloy pneumaticThe biggest segregation degrees of niobium in different areas of pneumatic plate wheel vertical sectionhomogeneity and statistic fitting degree of niobium in the vertical section of casting of GH169 superalloy pneumatic

Keywords: original position statistic distribution analysis     superalloy pneumatic plate wheel     niobium     statistic    

Design of a Lightweight Force-Feedback Glove with a Large Workspace Article

Yukai Zheng, Dangxiao Wang, Ziqi Wang, Yu Zhang, Yuru Zhang, Weiliang Xu

Engineering 2018, Volume 4, Issue 6,   Pages 869-880 doi: 10.1016/j.eng.2018.10.003

Abstract: curved sliding slot, a hybrid cam-linkage mechanism is proposed to transmit the resistance from the pneumatic

Keywords: Force-feedback glove     Lightweight     Large workspace     Pneumatic     Virtual reality    

Title Author Date Type Operation

Process Intensification in Pneumatically Agitated Slurry Reactors

Shujun Geng, Zai-Sha Mao, Qingshan Huang, Chao Yang

Journal Article

Design of damping valve for vehicle hydro pneumatic suspension

DONG Mingming, HUANG Hua, GU Lian

Journal Article

Design and modeling of a novel soft parallel robot driven by endoskeleton pneumatic artificial muscles

Journal Article

A pneumatic cylinder driving polyhedron mobile mechanism

Wan DING, Sung-Chan KIM, Yan-An YAO

Journal Article

Simulation of horizontal slug-flow pneumatic conveying with kinetic theory

GU Zhengmeng, GUO Liejin

Journal Article

Design and experiment of a novel pneumatic soft arm based on a deployable origami exoskeleton

Journal Article

Modular crawling robots using soft pneumatic actuators

Nianfeng WANG, Bicheng CHEN, Xiandong GE, Xianmin ZHANG, Wenbin WANG

Journal Article

Static balancing of planar articulated robots

Giuseppe QUAGLIA,Zhe YIN

Journal Article

Posture control of a 3-RPS pneumatic parallel platform with parameter initialization and an adaptive

Guo-liang TAO,Ce SHANG,De-yuan MENG,Chao-chao ZHOU

Journal Article

Control of the agglomeration of crystals in the reactive crystallization of 5-(difluoromethoxy)-2-mercapto-1

Yongli WANG, Shuyuan MA, Xiaodong Lü, Chuang XIE

Journal Article

Analysis of actuating mechanics characteristics for a flexible miniature robot system

YU Lianzhi, YAN Guozheng, MA Guanying, ZAN Peng

Journal Article

Al-NaOH-Composited Liquid Metal: A Fast-Response Water-Triggered Material with Thermal and Pneumatic

Bo Yuan, Xuyang Sun, Jing Liu

Journal Article

Original position statistic distribution analysis characterization of niobium on the vertical section of casting of superalloypneumatic plate wheel

Wang Haizhou,Li Meiling,Zhuang Jingyun

Journal Article

Design of a Lightweight Force-Feedback Glove with a Large Workspace

Yukai Zheng, Dangxiao Wang, Ziqi Wang, Yu Zhang, Yuru Zhang, Weiliang Xu

Journal Article