Development and Application of LIBS-XRF Coupled Multi-spectrum Coal Quality Analyser（Invited）

Zhihui TIAN; Shuqing WANG; Lei ZHANG; Peihua ZHANG; Zefu YE; Zhujun ZHU; Lei DONG; Weiguang MA; Wangbao YIN; Liantuan XION; Suotang JIA

doi:10.3788/gzxb20235203.0352109

Acta Photonica Sinica, Volume. 52, Issue 3, 0352109(2023)

Development and Application of LIBS-XRF Coupled Multi-spectrum Coal Quality Analyser（Invited）

Zhihui TIAN^1,2, Shuqing WANG³, Lei ZHANG^1,2、*, Peihua ZHANG^1,2, Zefu YE⁴, Zhujun ZHU⁴, Lei DONG^1,2, Weiguang MA^1,2, Wangbao YIN^1,2、**, Liantuan XION^1,2, and Suotang JIA^1,2

Author Affiliations

¹State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China

²Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

³Research Institute of Petroleum Processing, SINOPEC, Beijing 100089, China

⁴Shanxi Gemeng Sino American Clean Energy R&D Center Co., Ltd., Taiyuan 030006, China

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Figures & Tables(15)

Fig. 1. LIBS-XRF coal quality analyzer

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Fig. 2. LIBS analysis module

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Fig. 3. XRF analysis module

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Fig. 4. 3D model of the sample delivery module

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Fig. 5. 3D model of sample cell

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Fig. 6. Spiral laser ablation trajectory

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Fig. 7. Software operation display interface

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Fig. 8. Spectrum analysis process

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Fig. 9. Typical LIBS spectrum of coal samples

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Fig. 10. Typical XRF spectrum of coal samples

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Fig. 11. Coal quality analysis and calibration results

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Fig. 12. Comparison of measured industrial indexes of coal quality

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Table 1. XRF spectral element energy and location
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Table 1. XRF spectral element energy and location
Element Mg Al Si S Ca Ti Mn Fe
Energy/keV 1.30 1.56 1.84 2.47 4.04 4.96 6.54 7.11
Location 462 551 645 853 1 361 1 667 2 192 2 360

Table 2. Performance evaluation of PLS coal quality prediction model
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Table 2. Performance evaluation of PLS coal quality prediction model
Properties R² Δ SD GB^a
Calorific value/（MJ·kg^-1） 0.973 0.60 0.11 0.12
Ash/% 0.986 1.24 0.49 0.50
Volatile matter/% 0.977 0.18 0.15 0.30
Sulphur/% 0.979 0.19 0.09 0.10

Table 3. Comparison of measurement results of this instrument with standard assay data

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Table 3. Comparison of measurement results of this instrument with standard assay data

Sample No.	Calorific value/（MJ·kg^-1）			Ash/%			Volatile matter/%			Sulphur/%
Sample No.	M.V	S.V	Error	M.V	S.V	Error	M.V	S.V	Error	M.V	S.V	Error
Δ	0.385			0.830			0.496			0.239
1#	24.27	24.10	0.17	29.31	29.08	0.23	8.99	9.40	-0.41	1.87	1.61	0.26
2#	22.88	22.13	0.75	32.01	34.34	-2.33	8.32	9.35	-1.03	2.09	1.92	0.17
3#	23.17	23.07	0.10	30.83	30.85	-0.02	7.63	8.69	-1.06	2.18	1.94	0.24
4#	24.91	24.96	-0.05	26.35	26.60	-0.25	8.82	8.91	-0.09	1.86	2.04	-0.18
5#	22.94	22.49	0.45	31.96	33.08	-1.12	8.79	9.63	-0.84	2.48	2.27	0.21
6#	23.17	22.53	0.64	31.73	32.61	-0.88	8.82	9.21	-0.39	2.32	1.72	0.60
7#	19.44	19.39	0.05	40.92	39.92	1.00	7.03	7.16	-0.13	1.73	1.97	-0.24
8#	27.13	26.26	0.87	23.21	24.02	-0.81	9.61	9.63	-0.02	2.84	2.85	-0.01

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Zhihui TIAN, Shuqing WANG, Lei ZHANG, Peihua ZHANG, Zefu YE, Zhujun ZHU, Lei DONG, Weiguang MA, Wangbao YIN, Liantuan XION, Suotang JIA. Development and Application of LIBS-XRF Coupled Multi-spectrum Coal Quality Analyser（Invited）[J]. Acta Photonica Sinica, 2023, 52(3): 0352109

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