基于厌氧发酵混合原料流变特性的CFD流场模拟分析

孙浩; 陈高攀; 刘双; 王超; 侯俊英; 王雅雅

doi:10.19912/j.0254-0096.tynxb.2022-0594

PDF(4595 KB)

太阳能学报 ›› 2023, Vol. 44 ›› Issue (8) : 542-549. DOI: 10.19912/j.0254-0096.tynxb.2022-0594

基于厌氧发酵混合原料流变特性的CFD流场模拟分析

孙浩¹, 陈高攀¹, 刘双², 王超², 侯俊英¹, 王雅雅¹

作者信息 +

CFD FLOW FIELD SIMULATION ANALYSIS BASED ON RHEOLOGICAL CHARACTERISTICS OF ANAEROBIC FERMENTATION MIXED RAW MATERIALS

Sun Hao¹, Chen Gaopan¹, Liu Shuang², Wang Chao², Hou Junying¹, Wang Yaya¹

Author information +

文章历史 +

摘要

为确定不同搅拌器下厌氧发酵体系原料的运动规律,以单一鸡粪、鸡粪与玉米秸秆干重比1∶4混合原料为研究对象,对不同含固率下鸡粪以及混合原料的流变特性进行测定。基于混合原料的流变特性,运用CFD对4种搅拌器进行数值模拟分析。结果表明：与鸡粪类似,混合原料为非牛顿假塑性流体,其流变特性可用幂律模型表征,二者黏度均随转速的增大而减小,但混合原料的稠度系数和流变指数均低于鸡粪;六弯叶搅拌器对其附近流场影响较大,六斜叶圆盘涡轮式搅拌器的死区范围最小,六弯叶搅拌器相较于六斜叶搅拌器具有更高的径向速度。

Abstract

In order to determine the movement characteristic of raw materials in the anaerobic fermentation reactor under different agitators, the rheological properties of pure chicken manure and mixed raw materials of chicken manure and corn stover with ratio of 1：4 （weight basis） under different total solid content were measured. Based on the rheological properties of mixed raw materials, the numerical simulation of four kinds of agitators were analyzed by using CFD. The results show that mixed raw materials is non-Newtonian fluids which is similar to the chicken manure, and its rheological properties can be characterized by power law model. The viscosity of mixed materials decreases with the increasing of siring speed, while the consistency coefficient and rheological index of mixed raw materials are lower than those of chicken manure. The six curved blade agitator has greater influence on the nearby flow field, and the dead zone of the six inclined blade disk turbine agitator is smallest. In addition, the six curved blade agitator has higher radial velocity than the six inclined blade agitator.

导出引用

孙浩, 陈高攀, 刘双, 王超, 侯俊英, 王雅雅. 基于厌氧发酵混合原料流变特性的CFD流场模拟分析[J]. 太阳能学报. 2023, 44(8): 542-549 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0594

Sun Hao, Chen Gaopan, Liu Shuang, Wang Chao, Hou Junying, Wang Yaya. CFD FLOW FIELD SIMULATION ANALYSIS BASED ON RHEOLOGICAL CHARACTERISTICS OF ANAEROBIC FERMENTATION MIXED RAW MATERIALS[J]. Acta Energiae Solaris Sinica. 2023, 44(8): 542-549 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0594

中图分类号： S216.4

参考文献

[1] 徐文倩, 董红敏, 尚斌, 等. 典型畜禽粪便厌氧发酵产甲烷潜力试验与计算[J]. 农业工程学报, 2021, 37(14): 228-234.
XU W Q, DONG H M, SHANG B, et al.Experiment and calculation on the biochemical methane potential of typical livestock and poultry manure in anaerobic digestion[J]. Transactions of the Chinese Society of Agricultural Engineering, 2021, 37(14): 228-234.
[2] ZUBAYEDA Z, MAAZUZA Z O, TIM H M.Anaerobic digestion/co-digestion kinetic potentials of different agro-industrial wastes: a comparative batch study for C/N optimisation[J]. Waste management, 2018, 71: 663-674.
[3] 田玉菲, 杨莉, 周鸣人, 等. 玉米芯与鸡粪混合发酵提高甲烷发酵性能[J]. 化工进展, 2019, 38(6): 2898-2904.
TIAN Y F, YANG L, ZHOU M R, et al.Research on performance improvement of biomethane via codigestion of corncob and fowl dung[J]. Chemical industry and enggineering progress, 2019, 38(6): 2898-2904.
[4] 秦凯. 碳氮比和接种物对水稻秸秆厌氧发酵产生物甲烷的影响[D]. 宜昌: 三峡大学, 2020.
QIN K.Effect of carbon nitrogen ratio and inoculum on biogenic methane production from rice straw by anaerobic fermentation[D]. Yichang: China Three Gorges University, 2020.
[5] 潘怡博. 秸秆与畜禽粪便混合发酵产气特性研究[D]. 郑州: 河南农业大学, 2021.
PAN Y B.Characteristics of biogas production by mixed fermentation of straw and livestock manure[D]. Zhengzhou: Henan Agricultural University, 2021.
[6] 曹秀芹, 杨平, 赵振东. 污泥流变学及其厌氧消化混合特性数值模拟研究进展[J]. 环境工程学报, 2015, 9(3): 997-1003.
CAO X Q, YANG P, ZHAO Z D.Research progress of sludge rheology and numerical simulation of mixing characteristics in anaerobic digestion reactors[J]. Chinese journal of environmental engineering, 2015, 9(3): 997-1003.
[7] 库尔班江·热西提, 赵希强, 马春元. 生物质浆体的流变特性研究进展[J]. 农业工程, 2020, 10(5): 42-51.
KURBAN R, ZHAO X Q, MA C Y.Research progress on rheological properties of biomass slurry[J]. Agricultural engineering, 2020, 10(5): 42-51.
[8] 朱坤展, 刘建禹, 赵欣, 等. 牛粪发酵原料流变特性与表观粘度研究[J]. 农机化研究, 2016, 38(12): 260-263.
ZHU K Z, LIU J Y, ZHAO X, et al.Rheological properties and apparent viscosity research of cow dung fermentation raw material research[J]. Journal of agricultural mechanization research, 2016, 38(12): 260-263.
[9] BAUDEZ J C, MARKIS F, ESHTIAGHI N, et al.The rheological behaviour of anaerobic digested sludge[J]. Water research, 2011, 45(17): 5675-5680.
[10] MICHAEL M, MASSOUD R, CHRISTIAN E, et al.Mixing non-Newtonian flows in anaerobic digesters by impellers and pumped recirculation[J]. Advances in engineering software, 2018, 115: 194-203.
[11] MURRAY M Y.Comprehensive biotechnology[M]. Waterloo, Canada: University of Waterloo, 2019.
[12] 李少白, 胡钊晨, 寇巍. 基于非牛顿性的牛粪厌氧发酵过程的数值模拟[J]. 太阳能学报, 2021, 42(7): 469-473.
LI S B, HU Z C, KOU W.Numerical simulation of cow manure anaerobic digestion based on non-newtionian property[J]. Acta energiae solaris sinica, 2021, 42(7): 469-473.
[13] DAVIDE D, JOHN B.Assessment of mixing quality in full-scale, biogas-mixed anaerobic digestion using CFD[J]. Bioresource technology, 2018, 265: 480-489.
[14] 曹秀芹, 柴莲莲, 徐国庆, 等. 基于猪粪流变特性的厌氧消化反应器内的数值模拟[J]. 环境工程学报, 2020, 14(2): 498-505.
CAO X Q, CHAI L L, XU G Q, et al.Numerical simulation in anaerobic digestion reactor based on rheological properties of pig manure[J]. Chinese journal of environmental engineering, 2020, 14(2): 498-505.
[15] MAO L W, ZHANG J X, DAI Y J, et al.Effects of mixing time on methane production from anaerobic co-digestion of food waste and chicken manure: experimental studies and CFD analysis[J]. Bioresource technology, 2019, 294: 122177.
[16] 向闯, 李莉莉, 王琨, 等. 固态发酵反应器流场数值分析及搅拌参数优选[J]. 哈尔滨工业大学学报, 2021, 53(5): 65-71.
XIANG C, LI L L, WANG K, et al.Numerical analysis of flow field and optimization of agitation parameters in solid state fermentation reactor[J]. Journal of Harbin Institute of Technology, 2021, 53(5): 65-71.
[17] WEI L L, REN Y M, ZHU F Y, et al.Horizontal flow reactor optimization for biogas recovery during high solid organics fermentation: rheological characteristic analyses[J]. Journal of water process engineering, 2020, 40: 101776.
[18] 牛耕芜, 倪哲. 鸡粪接种污泥联合厌氧发酵过程中的流变特性研究[J]. 沈阳农业大学学报, 2020, 51(2): 245-249.
NIU G W, NI Z.Rheological study on anaerobic co-digestion of chicken manure and sludges[J]. Journal of Shenyang Agricultural University, 2020, 51(2): 245-249.
[19] 刘刈, 邓良伟, 王智勇. 几种厌氧消化原料的流变特性及其影响因素[J]. 农业工程学报, 2009, 25(8): 204-209.
LIU Y, DENG L W, WANG Z Y.Rheological properties of several kinds of feedstocks for anaerobic fermentation and their influencing factors[J]. Transactions of the Chinese Society of Agricultural Engineering, 2009, 25(8): 204-209.
[20] 王彦祥, 何琴, 李蕾, 等. 餐厨垃圾中温干式厌氧消化污泥的流变特性研究[J]. 环境科学学报, 2014, 34(12): 3171-3178.
WANG Y X, HE Q, LI L, et al.Rheological characteristic analysis of dry anaerobic digestion sludge of food waste under mesophilic conditions[J]. Acta scientiae circumstantiae, 2014, 34(12): 3171-3178.
[21] 赵兰兰. CSTR搅拌桨设计与试验研究[D]. 大庆: 黑龙江八一农垦大学, 2019.
ZHAO L L.Design and experimental study of CSTR impeller[D]. Daqing: Heilongjiang Bayi Agricultural University, 2019.
[22] MIHAELA M, MINH T T T. Valorization of triticale straw biomass as reinforcement in proficient polypropylene biocomposites[J]. Waste and biomass valorization, 2018, 9(10): 1971-1983.
[23] WU B X, KENNEDY S, ESHTIAGHI N, et al.CFD modeling of active volume creation in a non-newtonian fluid agitated by submerged recirculating jets[J]. Chemical engineering & technology, 2018, 41(7): 1441-1447.