Experimental study on the effects of blast-cap configurations and charge patterns on coke descending in CDQ cooling shaft
✍ Scribed by Y. H. Feng; X. X. Zhang; M. L. Wu
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 747 KB
- Volume
- 37
- Category
- Article
- ISSN
- 1099-2871
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✦ Synopsis
Abstract
The coke descending behavior in a CDQ cooling shaft is studied experimentally by means of a tracing method with a digital camera. For three different blast‐caps, the law of coke flow is studied under five conditions of coke charge. The experimental results show that, for the sake of the uniformity of the coke burden descending, a blast‐cap with elliptical cross‐section is a better choice than that with circular cross‐section regardless of high or low placement. A coke charge pattern with a flat top burden surface is preferable to that with peak‐valley surface, a double‐peak superior to a one‐peak. Trajectory and average velocity distribution of coke behavior are depend weakly on whether the coke is continuously fed or not as the discharging began. The blast‐caps have local effects on the descending coke and hardly affect whether the cokes flow smoothly or not in the case of coke burden with enough depth. © 2008 Wiley Periodicals, Inc. Heat Trans Asian Res, 37(6): 352– 358, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.20212