There are huge losses caused by mildew of grain in China every year.Grain drying is one of the important links to realize safe storage.In addition, low temperature ventilation dehumidification drying has become a major development direction of grain drying with the continuous improvement of grain quality requirements.Liquid dehumidification technology has a lot of advantages compared with condensation dehumidification, for example, it has a good dehumidification effect, accurate temperature and humidity control, and is energy saving, and its application is increasingly widespread.Based on the concept of “green, healthy, and ecological” grain storage, this design developed a new grain drying equipment based on solution dehumidification and analyzed the performance of the unit through experiments.The experimental results showed the outlet air parameters of the unit could meet the design requirements under different ambient air conditions.The system was driven by electric energy, and the waste heat of condensation was used to drive the solution dehumidification cycle.The coefficient of refrigeration performance (COPC) of the new design system could be more than 4.2, and the dehumidification coefficient (COPD) was not less than 3.1.The energy-saving effect of this system was more than 50% compared with the low temperature condensation dehumidification drying method.In addition, it could save about 20% energy compared with the dryer.In terms of environmental protection, storage grain quality improvement, and the effect of energy saving, this equipment has a lot of advantages, and its market application prospect is bound to be broad.
YAN Junhai
,
GAO Long
,
LIU Yin
,
DING Yangzheng
,
MENG Zhaofeng
,
WANG Shun
,
WU Feijun
,
XIE Yaqi
,
ZHANG Shiwen
. Design and performance analysis of new grain drying equipment based on solution dehumidification[J]. Food and Fermentation Industries, 2024
, 50(5)
: 290
-296
.
DOI: 10.13995/j.cnki.11-1802/ts.032434
[1] 李杰. 我国粮食干燥节能减排技术发展现状与展望[J].粮食储藏, 2011, 40(4):13-16;45.
LI J.Present situation and development of energy saving and emission reduction technology in grain drying[J].Grain Storage, 2011, 40(4):13-16;45.
[2] 毕文雅, 张来林, 郭桂霞.我国粮食干燥的现状及发展方向[J].粮食与饲料工业, 2016(7):12-15.
BI W Y, ZHANG L L, GUO G X.Current situation and development direction of grain drying in China[J].Cereal & Feed Industry, 2016(7):12-15.
[3] 闫景凤. 粮食烘干机械化发展分析与建议[J].农机使用与维修, 2021(1):25-26.
YAN J F.Brief discussion on development of grain drying mechanization[J].Agricultural Mechanization Using & Maintenance, 2021(1):25-26.
[4] 孙椰望, 王冠斌, 杨秋娟, 等.大型热泵粮食烘干塔结构特性分析[J].农业工程, 2020, 10(3):59-62.
SUN Y W, WANG G B, YANG Q J, et al.Structural analysis of heat-pump grain drying tower[J].Agricultural Engineering, 2020, 10(3):59-62.
[5] 董殿文, 卜春海, 高素芬, 等.粮食干燥系统节能减排技术研究与应用[J].粮油食品科技, 2010, 18(4):6-7.
DONG D W, BU C H, GAO S F, et al.Research and application of energy saving and emission reduction technology in grain drying system[J].Science and Technology of Cereals, Oils and Foods, 2010, 18(4):6-7.
[6] 翁拓, 吴家正, 范立, 等.粮食干燥技术的能耗浅析[J].节能技术, 2014, 32(3):210-213;218.
WENG T, WU J Z, FAN L, et al.Grain drying technology of energy utilization research[J].Energy Conservation Technology, 2014, 32(3):210-213;218.
[7] 邸坤, 李杰.中国粮食干燥节能减排新技术和新设备[J].粮食与饲料工业, 2011(12):16-21.
DI K, LI J.New technology and equipment of energy saving and emission reduction on grain drying system in China[J].Cereal & Feed Industry, 2011(12):16-21.
[8] 任广跃, 张忠杰, 朱文学, 等.粮食干燥技术的应用及发展趋势[J].中国粮油学报, 2011, 26(2):124-128.
REN G Y, ZHANG Z J, ZHU W X, et al.Application and development trend of grain drying technique[J].Journal of the Chinese Cereals and Oils Association, 2011, 26(2):124-128.
[9] 戴亚俊, 裘骏凯, 张陈晨.环流热泵粮食干燥系统的应用研究[J].现代食品, 2020(10):15-17.
DAI Y J, QIU J K, ZHANG C C.Study on the application of circulating heat pump grain drying system[J].Modern Food, 2020(10):15-17.
[10] 章慧全. 低温慢速粮食通风干燥技术及其应用[J].农业科技与装备, 2010(1):49-51.
ZHANG H Q.Ventilation and drying techniques for grains with low temperature and slow speed and their applications[J].Agricultural Science & Technology and Equipment, 2010(1):49-51.
[11] 岳治强. 利用冷凝热的冷冻除湿在种质库中的应用[J].冷藏技术, 2017, 40(2):30-32.
YUE Z Q.Application of refrigeration dehumidifying using condensing heat in germplasm repository[J].Journal of Refrigeration Technology, 2017, 40(2):30-32.
[12] 顾广东, 曹磊, 刘超, 等.粮食就仓干燥技术研究与应用[J].粮食与饲料工业, 2021(3):10-15;21.
GU G D, CAO L, LIU C, et al.Research and application of grain storage drying technology[J].Cereal & Feed Industry, 2021(3):10-15;21.
[13] 郭海霞, 王建国, 刘坤.粮食就仓干燥技术可有效提高粮食存储质量[J].中国食品工业, 2021(24):127-128.
GUO H X, WANG J G, LIU K.Grain drying technology in warehouse can effectively improve the quality of grain storage[J].China Food Industry, 2021(24):127-128.
[14] 赵思孟. 粮食干燥技术简述(续十二)[J].粮食流通技术, 2004(3):23-26.
ZHAO S M.Brief introduction of grain drying technology (continued 12)[J].Grain Distribution Technology, 2004(3):23-26.
[15] 李再贵. 日本粮食通风除湿干燥设施的发展特点[C]//2002农业工程青年科技论坛论文集.北京, 2002:79-81.
LI Z G.Development characteristics of ventilation, dehumidification and drying facilities for grain in Japan[C]//Proceedings of 2002 Agricultural Engineering Youth Science and Technology Forum.Beijing, 2002:79-81.
[16] 张馨予, 段洁利, 吕恩利, 等.仓储除湿技术研究进展[J].现代农业装备, 2015(4):39-44;49.
ZHANG X Y, DUAN J L, LYU E L, et al.Progress on storage dehumidification technologies[J].Modern Agricultural Equipment, 2015(4):39-44;49.
[17] 王鑫, 苏宏凯, 唐有为, 等.溶液除湿机组在高温高湿储粮区低温粮库中的应用[J].科技创新与应用, 2018(26):179-180.
WANG X, SU H K, TANG Y W, et al.Application of solution dehumidifier unit in low temperature grain depot in high temperature and high humidity grain storage area[J].Technology Innovation and Application, 2018(26):179-180.
[18] 彭冬根, 聂江涛, 孙万富.热泵驱动的溶液除湿在谷物就仓干燥中的应用[J].中国农业科技导报, 2021, 23(6):67-76.
PENG D G, NIE J T, SUN W F.Application of grain In-Bin drying based on liquid desiccant dehumidification driven by heat pump[J].Journal of Agricultural Science and Technology, 2021, 23(6):67-76.
[19] 刘寅, 闫俊海, 王聪民, 等.基于双级溶液除湿的粮食干燥装置:中国, CN209594316U[P].2019-11-08.
LIU Y, YAN J H, WANG C M, et al.Grain drying device based on two-stage solution dehumidification:China, CN209594316U[P].2019-11-08.
