1. College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China
2. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
Abstract：Utilization of agricultural residues as compacted fuels (in pellet or briquette form) for both domestic furnace and industrial boiler is more and more promising. Gross calorific value (GCV) is an important performance for biomass as a solid fuel, indicating the useful energy content of biomass. Measurement of gross calorific value using oxygen bomb calorimeter is time consuming. Thus, it is necessary to develop a fast and accurate method to evaluate the GCV of raw biomass residues. This is conducive to control the quality of feedstock for biomass pellets production. In this study, different GCV predicting models for multiple agricultural residues were proposed and analyzed, and optimal modeling and statistical methods for the GCV prediction of 5 crop residues viz. rice straw, wheat straw, corn stalk, rape stalk and cotton stalk were developed. Multiple linear regression (MLR), stepwise regression analysis (SWR), back propagation artificial neural networks (BPNN) models were proposed to predict the GCV from proximate and/or ultimate analysis of 5 crop feedstock. The best coefficients of determination of R2, root mean square error of predict (RMSEP), and the ratio of standard error of prediction to standard deviation of the reference data (RPD) of 0.921 1, 0.135 1 and 3.49 were obtained, respectively, when corresponding variables were introduced to MLR models. Additionally, GCV models developed based on visible-near infrared spectroscopy (Vis-NIR) also showed the highest R2 and RMSEP values of 0.881 2 and 0.412 9, respectively, when partial least squares regression (PLR) was used. This study demonstrates that MLR model and PLR model can be used to estimate the GCV of agricultural feedstock from proximate analysis, ultimate analysis and Vis-NIR technology.
Key words：Crop residues; BPNN; NIR; Gross calorific value
基金资助: The Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), the Natural Science Foundation of Jiangsu Province (BK20150881), the Natural Science Foundation of Zhejiang Province (LY16E030003), and the National Natural Science Foundation of China (31471417)
通讯作者:
盛奎川
E-mail: kcsheng@zju.edu.cn
作者简介: XIONG Xian-qing, (1975—), Associate Professor, College of Furnishings and Industrial Design, Nanjing Forestry University
引用本文:
熊先青，钱少平，盛奎川，何 勇，方 露，吴智慧. 基于工业分析/元素分析和可见-近红外光谱预测农作物秸秆高位热值[J]. 光谱学与光谱分析, 2017, 37(05): 1622-1627.
XIONG Xian-qing, QIAN Shao-ping, SHENG Kui-chuan, HE Yong, FANG Lu, WU Zhi-hui. Predicting Gross Calorific Value of Agricultural Feedstock Based on Proximate/Ultimate Analysis and Visible-Near Infrared Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(05): 1622-1627.
[1] Das O, Sarmah A K. Sci. Tot. Environ., 2015, 537: 323.
[2] Gillespie G D, Everard C D, Fagan C C, et al. Fuel, 2013, 111: 771.
[3] Acar S, Ayanoglu A. Energ. Edu. Sci. Technol. Part A, 2012, 28(2): 749.
[4] Niu W, Huang G, Liu X, et al. Energ. Fuel, 2014, 28(12): 7474.
[5] National Bureau of Statistics of China. China Statistical Yearbook. Beijing：China Statistical Publishing House, 2014.
[6] Gillespie GD, Everard CD, McDonnell KP. Energy, 2015, 80: 582.
[7] Nhuchhen D R, Salam P A. Fuel, 2012, 99: 55.
[8] Demirbas A. Energ. Sour., 2003, 25(7): 629.
[9] Kavsek D, Bednárová A, Biro M, et al. Open Chemistry, 2013, 11(9): 1481.
[10] Huang C, Han L, Yang Z, et al. Waste Manage., 2009, 29(6): 1793.
[11] Qian SP, Yan W, Yang GF, et al. Int. Agr. Eng. J., 2015, 24: 119.
[12] He C, Chen L, Yang Z, et al. Bioresour. Technol., 2012, 110: 314.
[13] Huang C, Han L, Yang Z, et al. Energy Convers. Manage., 2008, 49(12): 3433.
[14] Pandit YP, Badhe YP, Sharma B, et al. Fuel, 2011, 90(1): 339.
[15] Fagan C C, Everard C D, McDonnell K. Bioresour. Technol., 2011, 102(8): 5200.
