化工学报 ›› 2019, Vol. 70 ›› Issue (12): 4536-4545.DOI: 10.11949/0438-1157.20190721
收稿日期:
2019-06-25
修回日期:
2019-09-09
出版日期:
2019-12-05
发布日期:
2019-12-05
通讯作者:
于广锁
作者简介:
程晨(1996—),女,硕士研究生,基金资助:
Chen CHENG(),Zhicun XUE,Qinghua GUO,Yan GONG,Guangsuo YU()
Received:
2019-06-25
Revised:
2019-09-09
Online:
2019-12-05
Published:
2019-12-05
Contact:
Guangsuo YU
摘要:
基于实验室规模的撞击气流床气化炉,以水煤浆为原料进行气化实验,采用高温内窥镜及工业相机组成的可视化成像系统,在操作条件下,对水煤浆雾化过程进行拍摄。运用图像处理算法来识别和检测所得图像中的颗粒信息,利用颗粒示踪算法对颗粒进行轨迹测算。对颗粒的平均粒径、速度及角度进行统计分析。结果表明,喷嘴出口射流区内平均粒径主要集中在325~375 μm,相较于原煤颗粒较大;大部分颗粒速度集中在1~2 m·s-1且运动过程中速度变化不大;大部分颗粒运动方向不随时间而变化,呈简单直线运动;颗粒轨迹呈现以喷嘴为起始点的扇形射线。
中图分类号:
程晨, 薛志村, 郭庆华, 龚岩, 于广锁. 撞击气流床气化炉内雾化过程中颗粒运动特性[J]. 化工学报, 2019, 70(12): 4536-4545.
Chen CHENG, Zhicun XUE, Qinghua GUO, Yan GONG, Guangsuo YU. Particle motion characteristics of atomization process in impinging entrained-flow gasifier[J]. CIESC Journal, 2019, 70(12): 4536-4545.
工业分析/%(质量分数) | 元素分析/%(质量分数) | 灰熔点/℃ | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Ad | Vd | FCd | Cd | Hd | Nd | Sd | Od | DT | ST | HT | FT |
9.82 | 31.42 | 58.76 | 73.96 | 4.47 | 0.75 | 0.77 | 10.23 | 1162 | 1248 | 1310 | 1335 |
表1 煤质分析数据
Table 1 Coal properties
工业分析/%(质量分数) | 元素分析/%(质量分数) | 灰熔点/℃ | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Ad | Vd | FCd | Cd | Hd | Nd | Sd | Od | DT | ST | HT | FT |
9.82 | 31.42 | 58.76 | 73.96 | 4.47 | 0.75 | 0.77 | 10.23 | 1162 | 1248 | 1310 | 1335 |
平均颗粒直径/μm | 质量分数/% | 黏度/(mPa·s) | 密度/(kg·m-3) |
---|---|---|---|
46.5 | 61 | 274.3 | 1129 |
表2 水煤浆的物性参数
Table 2 Properties of CWS
平均颗粒直径/μm | 质量分数/% | 黏度/(mPa·s) | 密度/(kg·m-3) |
---|---|---|---|
46.5 | 61 | 274.3 | 1129 |
水煤浆流速/(kg·h-1) | O2流速/(m3·h-1) | (O/C)/(mol·mol-1) |
---|---|---|
10 | 4.21 | 1.0 |
表3 水煤浆气化操作条件
Table 3 Operating conditions of CWS gasi?cation
水煤浆流速/(kg·h-1) | O2流速/(m3·h-1) | (O/C)/(mol·mol-1) |
---|---|---|
10 | 4.21 | 1.0 |
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