Acta Photonica Sinica, Volume. 52, Issue 3, 0352101(2023)
Research and Application of Flue Gas Ammonia Slip Detection Based on Tunable Diode Laser Absorption Spectroscopy（Invited）
Figures & Tables(11)
Fig. 1. Absorption spectrum distribution of NH3 and main components of flue gas（from HITRAN database）
Fig. 4. Schematic diagram of the structure of the four absorption cells
Table 1. Comparison of the advantages and disadvantages of four types of absorption cells
View tableView in ArticleTable 1. Comparison of the advantages and disadvantages of four types of absorption cells
Absorption cell type Advantages Disadvantages White type 1）Large aperture angle，suitable for general and laser light sources；2）Adjustable light path 1）More reflectors used（3 pieces）；2）Insufficient use of mirrors Herriott type 1）Simple structure；2）Easy adjustment of light path 1）light path fixation；2）Insufficient use of mirrors；3）Smaller aperture angle，suitable for laser light sources only Chernin type 1）Large aperture angle，suitable for general and laser light sources；2）Adjustable light path；3）Fuller use of mirrors 1）More reflectors used（5 pieces）；2）Structural complexity；3）Larger volume Circular type 1）Smaller size and compactness；2）Adjustable light path；3）Easy adjustment of light path 1）More difficult to process
Table 2. Performance indicators of flue gas ammonia slip analyzer
View tableView in ArticleTable 2. Performance indicators of flue gas ammonia slip analyzer
Manufacturer Country Model Measuring way Detection limit or sensitivity/ppm Reference SIEMENS Germany LDS 6 In-situ 0.1 ［ 57 ］ABB Germany AO2000-LS25 In-situ 0.3 ［ 58 ］NEO Norway LaserGas™ Ⅱ SP In-situ 0.15 ［ 59 ］SERVOMEX Britain Laser 3 Plus In-situ 0.1 ［ 60 ］SICK Germany GM700 Permeation tube 0.3 ［ 61 ］UNISEARCH Canada LasIR R PIMs 0.1 ［ 62 ］JUGUANG China LGA-5500 Sampling 0.1 ［ 63 ］XUEDILONG China SCS-900LS Sampling 0.25 ［ 64 ］DAFANG China DLGA-3000 Sampling 0.1 ［ 65 ］ZETIAN China GA-5000DN Sampling 0.38 ［ 66 ］GUANGLI China AEMS10 In-situ sampling 0.1 ［ 67 ］XINYE China NLAM1512 In-situ sampling 0.1 ［ 68 ］
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Shunchun YAO, Songjie GUO, Yan YANG, Jiatong LI, Zhimin LU. Research and Application of Flue Gas Ammonia Slip Detection Based on Tunable Diode Laser Absorption Spectroscopy（Invited）[J]. Acta Photonica Sinica, 2023, 52(3): 0352101
Paper Information
Category: Special Issue for Frontiers and Techniques of Laser Spectroscopy
Received: Oct. 28, 2022
Accepted: Dec. 2, 2022
Published Online: Jun. 21, 2023
The Author Email: YAO Shunchun (epscyao@scut.edu.cn)
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