Efficient Combustion of the Fixed Coal Layer in an Advanced Combustion Chamber Design for Low-Power Boilers  

作　　者：A.B.Kudasheva M.Zh.Khazimov A.K.Niyazbayev A.A.Tursynzhanova B.A.Urmashev V.D.Gorburov K.M.Khazimov 

机构地区：[1]The Institute of Combustion Problems,050000 Almaty,Kazakhstan [2]The Almaty University of Power Engineering and Telecommunications,050013 Almaty,Kazakhstan [3]Kazakh National Agrarian Research University,050010 Almaty,Kazakhstan [4]Kazakh—British Technical University,050005 Almaty,Kazakhstan [5]Al-Farabi Kazakh National University,050038 Almaty,Kazakhstan [6]Moscow Power Engineering Institute,National Research University,Moscow,Russia 111250 [7]Suleyman Demirel University,040900 Kaskelen,Kazakhstan

出　　处：《Transactions of Tianjin University》2024年第6期471-487,共17页天津大学学报（英文版）

基　　金：The Committee of Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan(No.AP19679995)have funded this research.

摘　　要：In the long term,coal will remain a competitive resource in the thermal power sector,primarily due to its abundant global reserves and low costs.Despite numerous factors,including signifi cant environmental concerns,the global share of coal power generation has remained at 40%over the past four decades.Effi cient and clean coal combustion is a high priority wherever coal is used as a fuel.An improved low-power boiler design has been proposed to enhance effi ciency during fi xedbed coal combustion.This design reduces harmful emissions into the atmosphere by optimizing parameters and operating modes.In this study,mathematical modeling of gas velocity and temperature distribution during fi xed-bed coal combustion was conducted for a conventional grate system and an improved grate-free system.Experimental methods were employed to develop descriptive airfl ow models in the fi xed coal layer,considering nozzle diameter and air supply pressure in the furnace chamber without a grate system.Comparative evaluations of fi xed-bed coal combustion rates were performed using an experimental laboratory setup with both grate and grate-free stove systems.

关 键 词：Fixed-bed coal Grate system Air supply to coal layer Mechanical loss 

分 类 号：TQ534[化学工程—煤化学工程] TM621.2[电气工程—电力系统及自动化]