Experimental investigation and stability analysis on dense-phase pneumatic conveying of coal and biomass at high pressure

被引：13

作者：

Liang Cai ^{[1
]}

Cai Jiaying ^{[1
]}

Xu Guiling ^{[1
]}

Xu Pan ^{[1
]}

Chen Xiaoping ^{[1
]}

Zhao Changsui ^{[1
]}

机构：

[1] Southeast Univ, Sch Energy & Environm, Minist Educ, Key Lab Energy Thermal Convers & Control, Nanjing 210096, Jiangsu, Peoples R China

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2013年 / 30卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Pneumatic Conveying; Flow Characteristics; High Pressure; Stability; Shannon Entropy; VARIABLE MOISTURE-CONTENT; PULVERIZED COAL; FLOW CHARACTERISTICS; DYNAMIC-BEHAVIOR; TRANSPORT; PIPE; BED;

D O I：

10.1007/s11814-012-0165-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Conveying characteristics and flow stability are very important for design and control of a conveying system at high pressure. The influences of operating parameters and material properties on conveying characteristics were investigated in an experimental test facility with a conveying pressure up to 4MPa. Wavelet transform and Shannon entropy analysis were applied to analyzing pressure drops through horizontal pipe in order to obtain the stability criterion. Results indicated that the mass flow rate of biomass decreased, while the mass flow rate of pulverized coal increased at first and then decreased with the increase in fluidization velocity. Solid loading ratios for four kinds of powders decreased with the increase in fluidization velocity. Conveying phase diagrams and pressure drops through different test sections of pulverized coal and biomass at high pressure were obtained and analyzed. The influences of coal category, fracture characteristics and particle size on conveying characteristics were determined.

引用

页码：295 / 305

页数：11

共 20 条

[1]

Carpinlioglu M.O., 2000, POWDER HANDLE PROCES, V12, P145

[2] Investigation on characteristics of pulverized coal dense-phase pneumatic conveying under high pressure [J].