Experimental research on measurement of soot concentration under spraying on exhaust gas of diesel engine

级别	粒径范围/μm
第1级	0.028 1～0.056 5
第2级	0.056 5～0.094 4
第3级	0.094 4～0.154 0
第4级	0.154 0～0.258 0
第5级	0.258 0～0.377 0
第6级	0.377 0～0.605 0
第7级	0.605 0～0.935 0
第8级	0.935 0～1.580 0
第9级	1.580 0～2.360 0
第10级	2.360 0～3.950 0
第11级	3.950 0～6.600 0
第12级	6.600 0～9.800 0
第13级	9.800 0～10.000 0

Table 2. Flue gas measurement conditions, location and sampling depth

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Table 2. Flue gas measurement conditions, location and sampling depth

工况	取样深度/mm
工况	取样孔1	取样孔2	取样孔3	取样孔4
100%负荷，干烟气	150, 250, 350, 450, 550	150, 250, 350, 450, 550	150, 250, 350, 450, 550	150, 250, 350, 450, 550
100%负荷，喷淋流量为22 t/h的湿烟气	150, 250, 350, 450, 550	150, 250, 350, 450, 550	150, 250, 350, 450, 550	150, 250, 350, 450, 550

Table 3. DLPI sampling time determination test
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Table 3. DLPI sampling time determination test
工况取样深度/mm 喷淋取样时间/min
100%负荷，干烟气 350 无 40
100%负荷，喷淋流量为22 t/h的湿烟气 350 有 20
100%负荷，干烟气 350 无 10

Table 4. Soot purification efficiency under different spray flow rates at 100% and 50% loads
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Table 4. Soot purification efficiency under different spray flow rates at 100% and 50% loads
喷淋流量/(t·h⁻¹) 100%负荷 50%负荷
13级烟黑总质量/mg 净化效率/% 13级烟黑总质量/mg 净化效率/%
17.5 4.723 43.1 4.070 42.6
22.0 4.139 50.1 3.962 44.1
26.0 4.064 50.6 3.764 46.9

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Lianwei WU, Xinggang WANG, Shuai SHI, Zhen WANG, Jianping CHENG, Qiang CHENG. Experimental research on measurement of soot concentration under spraying on exhaust gas of diesel engine[J]. Chinese Journal of Ship Research, 2023, 18(1): 269

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