生物质热裂解双仓式气力输送喂料装置输料特性

doi:10.16085/j.issn.1000-6613.045

摘要/Abstract

摘要：

设计制造了一套生物质热裂解用双仓式气力输送喂料装置，研究流化气速、喷动气速、有效喷射距离（s=50mm、100mm、150mm、200mm）、输料管内径（d ₁=21mm、24mm、29mm）和生物质颗粒粒径对进料率的影响。试验结果表明，进料率随着流化流速、喷动气速、输料管内径、生物质颗粒粒径的增大而增大。在有效喷射距离为100mm时，进料率最高。固气比随着流化气或喷动气速的增加先增加后降低，在流化气和喷动气的共同作用下，随着气体流速的增加固气比一直在降低。为了描述进料率与喷动气速、流化气速、有效喷射距离、输料管内径以及生物质颗粒粒径之间的关系，采用多元线性回归分析，建立了多元线性回归模型。开展了额外试验验证模型的准确性，结果表明试验值和预测值误差在±10.2%以内，表明所建立的模型可靠，可以利用该模型预测喂料器的进料率。

关键词: 生物质, 喂料器, 流化床, 气力输送, 模型, 热裂解

Abstract:

A double bins pneumatic feeding device for biomass pyrolysis was designed and manufactured. The feeding rate of the biomass power was studied at the different fluidization gas velocity, injection gas velocity, effective injection distance（s=50mm,100mm,150mm,200mm）, inner diameter of conveying pipe（d ₁=21mm,24mm,29mm） and biomass particle size. The experimental results showed that the feeding rate increased with the increase of fluidization gas velocity, injection gas velocity, inner diameter of conveying pipe and biomass particle size. When the effective injection distance was 100mm, the feeding rate was the highest. The solid-gas ratio firstly increased and then decreased with the increase of fluidization gas velocity or injection gas velocity. Under the combined action of fluidization gas and injection gas, the solid-gas ratio decreased with the increase of gas flow velocity. To describe the link of the feeding rate with the fluidization flow velocity, injection flow velocity, effective injection distance, inner diameter of conveying pipe and biomass particle size, a multivariate linear regression model was established by using multivariate linear regression analysis. Extra experiments were carried out to verify the accuracy of the model. The results showed that the error between the experimental value and the predicted value was within ±10.2%, which indicated that the model was reliable and could be used to predict the conveying efficiency of the feeder.

Key words: biomass, feeder, fluidized bed, pyrolysis pneumatic conveying, model, pyrolysis

中图分类号:

王娜娜,李萍,司慧,齐敬一. 生物质热裂解双仓式气力输送喂料装置输料特性[J]. 化工进展, 2019, 38(10): 4780-4785.

Nana WANG,Ping LI,Hui SI,Jingyi QI. Conveying characteristics of double bins feeding device for biomass fast pyrolysis[J]. Chemical Industry and Engineering Progress, 2019, 38(10): 4780-4785.

图/表 9

图1 流化床式喂料装置示意图 1—料斗；2—过渡仓；3—扰动管；4—进料仓；5—喷动管；6—布风板；7—流化气入口；8—输料管；9—电动蝶阀；10—玻璃转子流量计；11—接收罐；12—电子秤

表1 落叶松物料颗粒特性

粒度/目	堆密度/kg·m^-3	粒径/mm	含水率/%
30～60	152.31	0.364	7.58
60～90	160.48	0.198	7.72
90～120	167.55	0.137	7.94
30～120	163.37	0.184	7.75

图2 流化气速对进料率影响（d p=30～120目，d 1=21mm）

图3 喷动气速对进料率影响（d p=30～120目，d 1=21mm，s=100mm）

图4 有效喷射距离对进料率影响（d p=30～120目，d 1=21mm）

图5 喷动气速对进料率影响（d p=30～120目，d 1=21mm，s=100mm）

图6 输料管内径进料率影响（d p=30～120目，d 1=21mm，s=100mm）

图7 落叶松颗粒粒径对进料率的影响（d 1=21mm，s=100mm）

图8 试验值与预测值结果比较

参考文献 25

1	DAI J , CUI H , GRACE J R . Biomass feeding for thermochemical reactors[J]. Progress in Energy and Combustion Science, 2012, 38(5): 716-736.
2	BERRUTI F M , BRIENS C L . Novel intermittent solid slug feeder for fast pyrolysis reactors: fundamentals and modeling[J]. Powder Technology, 2013, 247(10): 95-105.
3	BOATENG, AKWASI A , DAUGAARD, et al . Bench-scale fluidized-bed pyrolysis of switchgrass for bio-oil production[J]. Industrial & Engineering Chemistry Research, 2007, 46(7): 1891-1897.
4	LAPPAS A A , DIMITROPOULOS V S , ANTONAKOU E V , et al . Design, construction, and operation of a transported fluid bed process development unit for biomass fast pyrolysis: effect of pyrolysis temperature[J]. Industrial & Engineering Chemistry Research, 2008, 47(3): 742-747.
5	ZHENG J L . Bio-oil from fast pyrolysis of rice husk: yields and related properties and improvement of the pyrolysis system[J]. Journal of Analytical & Applied Pyrolysis, 2007, 80(1): 30-35.
6	王建豪, 贺春辉, 倪红亮, 等 . 不同配比生物质粉与煤粉混合物的高压密相气力输送压降实验研究[J]. 中国电机工程学报, 2012, 48(23): 112-118.
	WANG Jianhao , HE Chunhui , NI Hongliang , et al . Experimental study on dense phase pneumatic conveying of pulverized blending of biomass and coal at high pressure[J]. Proceedings of the CSEE, 2012, 48(23): 112-118.
7	吴煜, 司慧, 王文亮, 等 . 木质生物质热解二级脉冲式气力进料试验研究[J]. 中国粉体技术, 2017, 23(4): 67-71.
	WU Yu , SI Hui , WANG Wenliang , et al . Study on two-stage feeding using pulse pneumatic conveying system for woody biomass fast pyrolysis[J]. China Powder Science and Technology, 2017, 23(4): 67-71.
8	SCOTT D S , PISKORZ J . Low rate entrainment feeder for fine solids[J]. Industrial & Engineering Chemistry Fundamentals, 1982, 21(3): 319-322.
9	YARGICOGLU E N , SADASIVAM B Y , REDDY K R , et al . Physical and chemical characterization of waste wood derived biochars[J]. Waste Manage., 2014, 26(6): 256-268.
10	张倩, 李志合, 李永军, 等 . 旋转刮刀生物质粉喂料器的实验研究[J]. 农机化研究, 2013, 29(2): 214-216.
	ZHANG Qian , LI Zhihe , LI Yongjun , et al . Characteristics of rotary blades feeder for biomass powder[J]. Journal of Agricultural Mechanization Research, 2013, 29(2): 214-216.
11	李永军, 易维明, 柏雪源, 等 . 刮板式生物质粉喂料机的喂料特性分析[J]. 太阳能学报, 2014, 35(2): 355-359.
	LI Yongjun , YI Weiming , BAI Xueyuan , et al . Characteristics of scraper feeder for biomass power[J]. Acta Energiae Solaris Sinica, 2014, 35(2): 355-359.
12	潘响明, 郭晓镭, 陆海峰, 等 . 不同载气供料对工业级竖直上升管粉煤气力输送的影响[J]. 化工学报, 2016, 67(4): 1169-1178.
	PAN Xiangming , GUO Xiaolei , LU Haifeng , et al . Effect of feeding gas on pneumatic conveying of pulverized coal in industrial-scale vertical pipe[J]. CIESC Journal, 2016, 67(4): 1169-1178.
13	何家斌, 冉煜, 段广彬, 等 . 正压开放式气力输送水泥的流动特性[J]. 中国粉体技术, 2016(5): 89-92.
	HE Jiabin , RAN Yu , DUAN Guangbin , et al . Flow characteristics for pneumatic conveying cement in positive pressure open type system[J]. China Powder Science and Technology, 2016(5): 89-92.
14	王明旭, 秦超, 李永祥, 等 . 气力输送过程中粮食颗粒的输送特性研究[J]. 农机化研究, 2014(9): 18-22.
	WANG Mingxu , QIN Chao , LI Yongxiang , et al . Study on transport characteristics of grain particles in pneumatic conveying[J]. Journal of Agricultural Mechanization Research, 2014(9): 18-22.
15	杨腾 . 石灰石粉密相气流输送中试研究[J]. 化工进展, 2003, 22(11): 1213-1216.
	YANG Teng . Pneumatic conveying research of limestone-powder in dense phase[J]. Chemical Industry and Engineering Progress, 2003, 22(11): 1213-1216.
16	荆荣鹤, 王晓宁, 任芳 . 气力变压输送能耗研究[J]. 化工进展, 2011, 30(s1): 525-528.
	JING Ronghe , WANG Xiaoning , REN Fang . Study on the energy loss in the pressure change of pneumatic conveying[J]. Chemical Industry and Engineering Progress, 2011, 30(s1): 525-528.
17	MOLINDER R , WIINIKKA H . Feeding small biomass particles at low rates[J]. Powder Technology, 2015, 49(9): 240-246.
18	WEN C Y , SIMONS H P . Flow characteristics in horizontal fluidized solids transport[J]. AIChE Journal, 1959, 5(2): 263-267.
19	MASSIMILLA L , BETTA V , ROCCA C D . A study of streams of solids flowing from solid-gas fluidized beds[J]. AIChE Journal, 1961, 7(3): 502–508.
20	SURI A , HORIO M . A novel cartridge type powder feeder[J]. Powder Technology, 2009, 189(3): 497-507.
21	WANG Xiao , SI Hui . Conveying characteristics of dual pneumatic feeder used for biomass pyrolysis[J]. Bioresources, 2017, 12(3): 5970-5983.
22	董卫宾, 郭晓镭, 龚欣, 等 . 上出料系统粉煤密相气力输送特性及其与下出料系统的比较[J]. 化工学报, 2011, 62(7): 1989-1997.
	DONG Weibin , GUO Xiaolei , GONG Xin , et al . Characteristic of top discharge blow tank conveying system and comparison with bottom discharge blow tank conveying system[J]. CIESC Journal, 2011, 62(7): 1989-1997.
23	WYPYCH P W , YI J . Minimum transport boundary for horizontal dense-phase pneumatic conveying of granular materials[J]. Powder Technology, 2003, 129(1/2/3): 111-121.
24	王思佳, 靳世平, 黄芬霞, 等 . 生物质粉末气力输送特性试验研究[J]. 工业加热, 2016, 45(6): 45-48.
	WANG Sijia , JIN Shiping , HUANG Fenxia , et al . Experimental study on characteristics in pneumatic conveying of biomass powder[J]. Industrial Heating, 2016, 45(6): 45-48.
25	龚欣, 郭晓镭, 代正华, 等 . 高固气比状态下的粉煤气力输送[J]. 化工学报, 2006, 57(3): 640-644.
	GONG Xin , GUO Xiaolei , DAI Zhenghua , et al . High solids loading pneumatic conveying of pulverized coal[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(3): 640-644.

[1]	徐晨阳, 都健, 张磊. 基于图神经网络的化学反应优劣评价[J]. 化工进展, 2023, 42(S1): 205-212.
[2]	陈林, 徐培渊, 张晓慧, 陈杰, 徐振军, 陈嘉祥, 密晓光, 冯永昌, 梅德清. 液化天然气绕管式换热器壳侧混合工质流动及传热特性[J]. 化工进展, 2023, 42(9): 4496-4503.
[3]	张帆, 陶少辉, 陈玉石, 项曙光. 基于改进恒热传输模型的精馏模拟初始化[J]. 化工进展, 2023, 42(9): 4550-4558.
[4]	张振, 李丹, 陈辰, 吴菁岚, 应汉杰, 乔浩. 吸附树脂对唾液酸的分离纯化[J]. 化工进展, 2023, 42(8): 4153-4158.
[5]	张智琛, 朱云峰, 成卫戍, 马守涛, 姜杰, 孙冰, 周子辰, 徐伟. 高压聚乙烯失控分解研究进展：反应机理、引发体系与模型[J]. 化工进展, 2023, 42(8): 3979-3989.
[6]	王帅晴, 杨思文, 李娜, 孙占英, 安浩然. 元素掺杂生物质炭材料在电化学储能中的研究进展[J]. 化工进展, 2023, 42(8): 4296-4306.
[7]	吴亚, 赵丹, 方荣苗, 李婧瑶, 常娜娜, 杜春保, 王文珍, 史俊. 用于复杂原油乳液的高效破乳剂开发及应用研究进展[J]. 化工进展, 2023, 42(8): 4398-4413.
[8]	郑梦启, 王成业, 汪炎, 王伟, 袁守军, 胡真虎, 何春华, 王杰, 梅红. 菌藻共生技术在工业废水零排放中的应用与展望[J]. 化工进展, 2023, 42(8): 4424-4431.
[9]	关红玲, 杨辉, 井红权, 刘玉琼, 谷守玉, 王好斌, 侯翠红. 木质素基控释材料及其在药物输送和肥料控释中的应用[J]. 化工进展, 2023, 42(7): 3695-3707.
[10]	于丁一, 李圆圆, 王晨钰, 纪永升. pH响应性木质素水凝胶的制备及药物控释[J]. 化工进展, 2023, 42(6): 3138-3146.
[11]	赵毅, 杨臻, 张新为, 王刚, 杨旋. 不同裂缝损伤和愈合温度条件下沥青自愈合行为的分子模拟[J]. 化工进展, 2023, 42(6): 3147-3156.
[12]	陆诗建, 张媛媛, 吴文华, 杨菲, 刘玲, 康国俊, 李清方, 陈宏福, 王宁, 王风, 张娟娟. 百万吨级CO₂捕集项目亚硝胺污染物扩散健康风险评估[J]. 化工进展, 2023, 42(6): 3209-3216.
[13]	吴锋振, 刘志炜, 谢文杰, 游雅婷, 赖柔琼, 陈燕丹, 林冠烽, 卢贝丽. 生物质基铁/氮共掺杂多孔炭的制备及其活化过一硫酸盐催化降解罗丹明B[J]. 化工进展, 2023, 42(6): 3292-3301.
[14]	周磊, 孙晓岩, 陶少辉, 陈玉石, 项曙光. 基于分离因数法的简捷炼油塔模型开发及应用[J]. 化工进展, 2023, 42(6): 2819-2827.
[15]	王雪, 徐期勇, 张超. 木质纤维素类生物质水热炭化机理及水热炭应用进展[J]. 化工进展, 2023, 42(5): 2536-2545.