CIESC Journal ›› 2024, Vol. 75 ›› Issue (7): 2433-2445.DOI: 10.11949/0438-1157.20240212
• Fluid dynamics and transport phenomena • Previous Articles Next Articles
Xianggang ZHANG1(), Yulong CHANG2, Hualin WANG3, Xia JIANG2(
)
Received:
2024-02-27
Revised:
2024-05-23
Online:
2024-08-09
Published:
2024-07-25
Contact:
Xia JIANG
通讯作者:
江霞
作者简介:
张香港(1994—),男,博士研究生,672468678@qq.com
基金资助:
CLC Number:
Xianggang ZHANG, Yulong CHANG, Hualin WANG, Xia JIANG. Low energy consumption non-phase change second drying of waste straw and other biomass[J]. CIESC Journal, 2024, 75(7): 2433-2445.
张香港, 常玉龙, 汪华林, 江霞. 废弃秸秆等生物质低能耗非相变秒级干燥[J]. 化工学报, 2024, 75(7): 2433-2445.
技术类型 | 干燥效率 | 能耗水平 | 时间 | 应用阶段 | 成熟度 | 热媒温度 |
---|---|---|---|---|---|---|
旋转鼓式干燥机 | 高 | 中等 | 短 | 工业规模 | 高 | 150~400℃ |
流化床干燥机 | 中等 | 低 | 中等 | 工业/小规模 | 中等 | 100~200℃ |
喷雾干燥机 | 高 | 高 | 短 | 工业规模 | 高 | 200~300℃ |
微波干燥机 | 高 | 中等 | 短 | 实验室规模 | 中等 | 50~150℃ |
真空干燥机 | 中等 | 中等 | 长 | 实验室/小规模 | 中等 | 50~100℃ |
红外干燥机 | 中等 | 低 | 短至中等 | 小规模 | 中等 | 100~200℃ |
Table 1 Comparative analysis of common sludge thermal drying technologies[18]
技术类型 | 干燥效率 | 能耗水平 | 时间 | 应用阶段 | 成熟度 | 热媒温度 |
---|---|---|---|---|---|---|
旋转鼓式干燥机 | 高 | 中等 | 短 | 工业规模 | 高 | 150~400℃ |
流化床干燥机 | 中等 | 低 | 中等 | 工业/小规模 | 中等 | 100~200℃ |
喷雾干燥机 | 高 | 高 | 短 | 工业规模 | 高 | 200~300℃ |
微波干燥机 | 高 | 中等 | 短 | 实验室规模 | 中等 | 50~150℃ |
真空干燥机 | 中等 | 中等 | 长 | 实验室/小规模 | 中等 | 50~100℃ |
红外干燥机 | 中等 | 低 | 短至中等 | 小规模 | 中等 | 100~200℃ |
实验仪器 | 型 号 | 生产公司 |
---|---|---|
鼓风干燥箱 | DHG-9145A | 上海泰坦科技股份有限公司 |
分析天平 | BSA124S | 德国赛多利斯公司 |
扫描电镜 | HITACHI SU5000+ | 日本日立公司 |
超声仪 | KH800KDE | 昆山禾创超声仪器有限公司 |
水浴锅 | DF-101S | 北京科伟永兴仪器有限公司 |
Table 2 Main instruments and equipment of experiment
实验仪器 | 型 号 | 生产公司 |
---|---|---|
鼓风干燥箱 | DHG-9145A | 上海泰坦科技股份有限公司 |
分析天平 | BSA124S | 德国赛多利斯公司 |
扫描电镜 | HITACHI SU5000+ | 日本日立公司 |
超声仪 | KH800KDE | 昆山禾创超声仪器有限公司 |
水浴锅 | DF-101S | 北京科伟永兴仪器有限公司 |
Fig.3 (a) Grid of model; (b) Comparison of tangential velocity distribution along a diameter in cylinder and cone connection surface at different mesh density
生物质名称 | 初始含水率/% | 密度/(kg/m3) | 粒径/mm | 脱水效率/% |
---|---|---|---|---|
酒糟 | 67.8 | 650 | 0.5~1.0 | 69.4 |
木屑 | 55.3 | 200 | 1.0~2.5 | 70.2 |
玉米胚芽 | 60.0 | 300 | 1.0~3.0 | 68.7 |
市政污泥 | 80.0 | 1000 | 0.1~5.0 | 63.8 |
Table 3 Physical properties and drying effects of different types of biomass
生物质名称 | 初始含水率/% | 密度/(kg/m3) | 粒径/mm | 脱水效率/% |
---|---|---|---|---|
酒糟 | 67.8 | 650 | 0.5~1.0 | 69.4 |
木屑 | 55.3 | 200 | 1.0~2.5 | 70.2 |
玉米胚芽 | 60.0 | 300 | 1.0~3.0 | 68.7 |
市政污泥 | 80.0 | 1000 | 0.1~5.0 | 63.8 |
参数 | 数值 |
---|---|
处理量,G/(kg/h) | 84 |
初始含水率,n1/% | 68 |
剩余含水率,n2/% | 19.11(40 s) |
环境空气温度,T0/℃ | 25 |
入口载气温度,T1/℃ | 90 |
出口载气温度,T2/℃ | 40 |
初始物料温度,Tm1/℃ | 25 |
干燥后物料温度,Tm2/℃ | 35 |
气量,Q/(m³/h) | 1300 |
Table 4 Basic parameters for calculating proportion of non-phase change moisture
参数 | 数值 |
---|---|
处理量,G/(kg/h) | 84 |
初始含水率,n1/% | 68 |
剩余含水率,n2/% | 19.11(40 s) |
环境空气温度,T0/℃ | 25 |
入口载气温度,T1/℃ | 90 |
出口载气温度,T2/℃ | 40 |
初始物料温度,Tm1/℃ | 25 |
干燥后物料温度,Tm2/℃ | 35 |
气量,Q/(m³/h) | 1300 |
项目 | 非相变旋流 干燥装置 | 管束式干燥装置 |
---|---|---|
能耗 | 65.96 kW·h/t | 耗电:26.37 kW·h/t; 耗汽:1.118 t/t |
成本 | 36.28 CNY/t | 226.61 CNY/t |
装置占地面积 | 约24 m2 | 约3600 m2 |
Table 5 Cost comparison of two drying technologies
项目 | 非相变旋流 干燥装置 | 管束式干燥装置 |
---|---|---|
能耗 | 65.96 kW·h/t | 耗电:26.37 kW·h/t; 耗汽:1.118 t/t |
成本 | 36.28 CNY/t | 226.61 CNY/t |
装置占地面积 | 约24 m2 | 约3600 m2 |
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