振动穿流床干燥及带废气循环系统  

New Drying System with Exhaust Gas Circulation for Coal Drying by HotGas Penetrating Vibration Bed

作　　者：杨国华[1] 陈清如[1] 陶秀祥[1] 樊茂明[1] 

机构地区：[1]中国矿业大学能源利用与化学工程系

出　　处：《中国矿业大学学报》1999年第4期307-309,共3页Journal of China University of Mining & Technology

基　　金：国家九五重点科技攻关专题

摘　　要：简介了振动穿流床煤炭干燥中间试验．试验表明，振动穿流床煤炭干燥可使５０～６ｍｍ煤炭外水由５．８０％降为１．１１％，使５０～０ｍｍ煤炭外水由１０．０％降为１．９７％，进一步验证了该技术具有快速均匀干燥的特点．基于中试结果提出了部分废气循环的煤炭干燥系统及其设计计算方法．设计实例表明：与无废气循环干燥系统相比，该系统可节煤１８．３３％，节电１３．９％，且可降低系统内的氧气浓度。A pilot test on coal drying in a hotgas penetrating vibration bed is briefly introduced. The test results show that the coal surface moisture of 50￣6 mm size fraction can be reduced from 5.80% to 1.11%, and that of 50￣0 mm size fraction from 10.0% to 1.97%, thus further proving that this drying technique has characteristics of fast and homogenous drying. According to the pilot test results, a new coal drying system with part exhaust gas circulation and its design method are put forward. The calculating results of an industrial system show that this new coal drying system has advantages of saving fuel and electricity. In addition, it is safe due to reduction of oxygen content inside the system.

关 键 词：干燥系统 废气循环 振动穿流床 煤炭干燥 

分 类 号：TD942.623[矿业工程—选矿] X752.01[环境科学与工程—环境工程]