A new dry coke cooling process of delayed coking units and its parameter analysis

被引：0
|
作者：
Cao L. [1 ]
Zhou Y.-H. [1 ]
Fan Z.-Y. [1 ]
Wang G.-H. [1 ]
Yan J.-B. [1 ]
Lei Y. [1 ]
机构：
[1] School of Chemistry and Chemical Engineering, Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2021年 / 35卷 / 01期
关键词：
Aspen Plus; Delayed coking; Dry coke cooling; Economy;
D O I：
10.3969/j.issn.1003-9015.2021.01.016
中图分类号：
学科分类号：
摘要：
A new dry coke cooling process was proposed for the wet quenched coke process of delayed coking units. The process effectively avoided the generation of wastewater in the water supply during coke cooling processes, utilized coke heat and improved coke quality. Following the dry quenched process in coal coking, the flue gas generated in the fluid catalytic cracking process was introduced into the coke tower for coke cooling, and the heat absorbed flue gas was used as the secondary heat source. The heat was then released in the waste heat boiler. Therefore, the process of coke-cooling water replacement with flue gas was achieved. The dry coke cooling process was simulated by Aspen Plus, and the effects of main parameters on cooling results were studied and evaluated. The results show that the effects of the main parameters on total annual cost are: heat capacity of circulating flue gas > split ratio > outlet pressure of compressor > temperature of coke cooling > temperature of flue gas from fluid catalytic cracking units. When the outlet pressure of compressor is higher than 0.16 MPa and the split ratio is more than 0.12, the economy of the process are infeasible. © 2021, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.
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页码：140 / 147
页数：7
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