华南农业大学学报2016，Vol.37Issue(6)：110-116,7.DOI:10.7671/j.issn.1001-411X.2016.06.017
密集烤房非金属耐火材料供热设备的设计及烘烤效果
Design of nonmetallic refractory heating equipment in bulk curing barn and its baking effects
摘要
Abstract
[Objective] To overcome the defects of 418-type heat interchanger in bulk curing barn, such as being susceptible to corrosion and having short service life, and to optimize the structure and perform-ance of heating equipment in bulk curing barn.[Method] A nonmetallic refractory material with high conductivity was choosen to make the heat interchanger.The heat interchanger was structured with three layers of circular horizontal dual pipelines and three heating interchange pipelines in the same vertical plane were connected by an S-shape connector.The heat interchanger was equipped with a squared and vaulted stove ( with a cast iron cover) feeding disposable coal.Using bulk curing barn with metal heating equipments as the control, the performances and baking effects of the nonmetallic refractory heating equipment in bulk curing barn were studied.[Result]The heating rate of bulk curing barn installed with the nonmetallic refractory heating equipment ( 5.36 ℃· h-1 ) was significantly lower than the control (21.73 ℃· h-1 ) without loading tobacco, while its cooling rate was slower than the control.The results showed that bulk curing barn installed with nonmetallic refractory heating equipment showed great tempera-ture stability and the trends at three key point temperatures(38,42,55 ℃)were the same.Its plane and vertical temperature difference was less than the control during curing.Compared with the control, the heat efficiencies of baking the middle and upper tobacco leaves increased by 12.42% and 6.74%, the coal consumption rates reduced by 22.50%and 15.13%, the average prices of the dried tobacco leaves after curing increased by 0.84 and 0.20 yuan per kilogram respectively, the proportion of medium-high grade tobacco leaves increased, and the effects of energy saving and quality improving was obvious in the bulk curing barn with nonmetallic refractory heating equipment.[Conclusion]The heating equipment made of nonmetallic refractory material with high conductivity has excellent baking performence and high corrosion resistant, and can be applied for heating equipment update in bulk curing barn.关键词
烤烟/密集烤房/非金属材料/耐火材料/换热器/一次性加煤火炉/热效率Key words
flue-cured tobacco/bulk curing barn/nonmetallic material/refractory material/heat inter-changer/stove feeding disposable coal/heat efficiency分类
农业科技引用本文复制引用
李俊业,郑荣豪,王晓宾,邹韬韵,周振超,邓世媛,陈建军..密集烤房非金属耐火材料供热设备的设计及烘烤效果[J].华南农业大学学报,2016,37(6):110-116,7.基金项目
广东省烟草专卖局项目 （）
