Present situation of coking heater technology

被引：0

作者：

Li N. ^{[1
]}

Li P. ^{[1
]}

机构：

[1] CNOOC R. I. of Refining and Petrochemicals, Shandong, Qingdao

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2020年 / 39卷 / S2期

关键词：

coking heater; development course; heater type; key technology;

D O I：

10.16085/j.issn.1000-6613.2020-1109

中图分类号：

学科分类号：

摘要：

The design and operation of coking heater is the key technology of delayed coking. The paper expounded the development course of coking heater, summarized scale and heater type of the coking unit in each production enterprise of three major oil companies, and described the technical characteristics of double-sided radiant box heater and step heater. The key technology of coking heater developed in China in recent years was emphatically introduced form the coking mechanism of coking furnace tube, the characterization of raw material reaction and its industrial application. At present, most of the coking heater in the oil refineries are double-sided radiant box furnaces, and the newly-built devices mostly adopt the stepped furnace type. Based on the coking mechanism of the furnace tube in China, through the establishment of a coking raw material processing performance evaluation method, the coking furnace process simulation technology was developed, and new guidelines for the design and operation of the furnace tube coking were proposed, and a process technology that increased the reaction heat with a low temperature and long residence time was established. In the future, in the design and transformation of coking equipment, it is necessary to judge the coking characteristics in advance based on the nature of the raw materials, adopt advanced combustion methods, reasonable furnace tube layout and process design, improve the flow state in the tube, and optimize key operations, etc. On the premise of controlling the coking of the furnace tube, try to increase the cracking reaction depth at the furnace outlet as much as possible, so as to achieve the purpose of improving product distribution and extending the operation cycle of the device. © 2020, Chemical Industry Press Co., Ltd.. All rights reserved.

引用

页码：115 / 120

页数：5

共 12 条

[1]

LI Chuhe, LI Jinlou, Discussion on the challenge and development of delayed coking technology in China, Petrochemical Design, 32, 4, pp. 56-61, (2015)

[2]

WU Zhengsong, Discussion on design of new type delayed coking furnace, Petro & Chemical Equipment, 20, 8, pp. 19-21, (2017)

[3]

LI Zhiguo, LING Yiqun, Status quo of domestic delayed coking process and suggestions, Petroleum Refinery Engineering, 31, 7, pp. 1-4, (2001)

[4]

XIAO Hongliang, Development of the on-line optimization model for delayed coking furnace, (2008)

[5]

DOND Gang, Review of coking heater technology used in delayed coking construction at abroad, Process Equipment & Piping, 49, 4, pp. 26-28, (2012)

[6]

ZHAO Rifeng, Impacts of medium residence time in coking furnace on coke yield, Petroleum Refinery Engineering, 43, 5, pp. 24-25, (2012)

[7]

LI Peng, Development of the on-line optimization model for delayed coking furnace, (2015)

[8]

XIAO Jiazhi, WANG Lanjuan, CAI Sheng, Et al., Research on check method for coking heater, Petroleum Refinery Engineering, 31, 10, pp. 18-19, (2001)

[9]

LIU Fuzhou, WANG Wenqiang, ZHANG Jingru, Et al., Evaluation method for determining the coking tendency of residual oil in the course of thermal processing, Petroeum Processing and Petrochemicals, 37, 12, pp. 53-56, (2006)

[10]

WANG Xiaoli, The performance evaluation of coking feedstock and theoptimizing analysis of corresponding operation[D], (2010)

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