Charging of coal powder particles in dense phase pneumatic conveying system at low pressure

2009 ◽  
Vol 16 (2) ◽  
pp. 386-390 ◽  
Author(s):  
Xu Chuanlong ◽  
Tang Guanghua ◽  
Wang Shimin
Keyword(s):  
Low Pressure ◽  
Pneumatic Conveying ◽  
Dense Phase ◽  
Coal Powder ◽  
Powder Particles ◽  
Conveying System

Experimental Research of Granular Silica Pneumatic Conveying System in Tyre Factory

2013 ◽  
Vol 561 ◽  
pp. 244-249
Author(s):  
Yong Li ◽  
Hong Jiang Li ◽  
Guang Li
Keyword(s):  
Experimental Research ◽  
Plug Flow ◽  
Pneumatic Conveying ◽  
Characteristic Parameters ◽  
Dense Phase ◽  
Open Pressure ◽  
The Stability ◽  
Tank Pressure ◽  
Conveying System

Through the experimental research of granular silica in dense phase pneumatic conveying in the tyre plants, the characteristic parameters of granular silica pneumatic conveying have been obtained. By adjusting the main and bypass pipe pressure values, the stable plug flow conveying of granular silica can be realized, which considerably reduces the broken ratio of the granular silica. The plug flow conveying will be even more stable, when the opening blow tank pressure is set at zero. Additionally the same research has also proven that bypass valves open pressure in the end of pipeline will affect the stability of the entire conveying system as well.

Numerical Simulation and Analysis of Carbon Black in Pneumatic Conveying Pipe

2014 ◽  
Vol 1052 ◽  
pp. 561-566
Author(s):  
Zhi Hua Li ◽  
Yan Qing Yang ◽  
Ya Zhou Yu ◽  
Guang Peng Liu ◽  
Xu Chao Li
Keyword(s):  
Carbon Black ◽  
Cross Section ◽  
Fluid Pressure ◽  
Flow State ◽  
Pneumatic Conveying ◽  
Dense Phase ◽  
Bent Pipe ◽  
The Mathematical Model ◽  
Research And Design ◽  
Conveying System

Based on establishment of the mathematical model about the carbon black dense phase pneumatic conveying, using computational fluid dynamics ( referred to as CFD) methods, this paper stimulated the carbon black flow state inside the bent pipe. Through simulation and analysis, the carbon black particles' flow condition along the bent pipe, the carbon black particles' distribution variation at the bent pipe cross-section, the bent pipe part where worn most easily, the fluid pressure cloud and the optimum R/D have been gotten. All these provide basis for the research and design of carbon black dense phase pneumatic conveying system.

Analysis of Low Velocity Dense Phase Pneumatic Conveying System to Extend System Conveying Capability

2011 ◽  
Vol 239-242 ◽  
pp. 112-115
Author(s):  
Sheng Ming Tan ◽  
Bin Chen ◽  
Kenneth Charles Williams ◽  
Mark Glynne Jones
Keyword(s):  
Slug Flow ◽  
Pneumatic Conveying ◽  
Dense Phase ◽  
Bulk Materials ◽  
Air Velocity ◽  
Low Velocity ◽  
Lower Velocity ◽  
Pipe Line ◽  
Conveying System ◽  
Velocity Zone

This paper reports the current development of technologies to analyse the conveying performance of bypass low velocity dense phase pneumatic conveying system for transporting powder bulk materials and slug flow low velocity dense phase pneumatic conveying system for transporting granular sized bulk materials. It reveals that the bypass system can be operated at a lowered air velocity than conventional pipe line and slug flow system can be also controlled to operate at a lower velocity zone. Hence these technologies have the potential to extend the conveying capability of a pneumatic conveying system to a broader range of materials, also provide better performance in reduction in pipe wear and product degradation.

Experimental Research on Carbon Black Flowing in Pneumatic Conveying System

2009 ◽  
Vol 87-88 ◽  
pp. 256-262
Author(s):  
Zhi Hua Li ◽  
Yan Qing Liu ◽  
Peng Xia ◽  
Li Ma
Keyword(s):  
Carbon Black ◽  
System Design ◽  
Gas Flow ◽  
Particle Diameter ◽  
Diameter Distribution ◽  
Pneumatic Conveying ◽  
Gas Flow Rate ◽  
Dense Phase ◽  
Main Factors ◽  
Conveying System

The article analyses the main factors such as the species and character of the carbon black, the conveying pressure and gas-flow rate which influence the flow character of carbon black during pneumatic conveying. And also studies the flow character of carbon black in dense phase pneumatic conveying system with experiment. It raises the view that the carbon black with narrow particle diameter distribution, especially with bigger size is favorable for saving energy and reducing fragmentation; the conveying pressure approach lowest point should be chosen during carbon black pneumatic conveying, and the quantity of elbow pipe should be used as less as possible; on condition that the conveying capacity is guaranteed, the lower air feeding volume is preferable; the higher the conveying pressure is, the lower the fragmentation of the carbon black will be. The article also supplies the reference for technology parameter choosing and carbon black conveying system design.

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