A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process

雷杨; 张冰剑; 侯小琼; 陈清林

doi:10.1016/S1004-9541(13)60472-4

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A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process

过程系统工程与过程安全 | Updated：2026-01-06

- A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process
- Chinese Journal of Chemical Engineering Vol. 21, Issue 3, Pages: 285-2941004-954160472-4(2013)
- Affiliations：
  
  School of Chemistry and Chemical Engineering, Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen University,Guangzhou,China,510275
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(13)60472-4
  CLC：
- Published：2013
- Accepted：
Scan QR Code
LEI Yang, ZHANG Bingjian, HOU Xiaoqiong, CHEN Qinglin . A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process[J]. Chin.J.Chem.Eng., 2013, 21(3): 285-294.
DOI：

LEI Yang, ZHANG Bingjian, HOU Xiaoqiong, CHEN Qinglin . A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process[J]. Chin.J.Chem.Eng., 2013, 21(3): 285-294. DOI： 10.1016/S1004-9541(13)60472-4.

摘要

Abstract

Delayed coking is an important process in refinery to convert heavy residue oils from crude distillation units (CDUs) and fluid catalytic cracking units (FCCUs) into dry gas

liquefied petroleum gas (LPG)

gasoline

diesel

gas oils and cokes. The main fractionator

separating superheating reaction vapors from the coke drums into lighter oil products

involves a de-superheating section and a rectifying section

and couldn't be simulated as a whole column directly because of non-equilibrium in the de-superheating section. It is very important to correctly simulate the main fractionator for operational parameter and energy-use optimization of delayed cokers. This paper discusses the principle of de-superheating processes

and then proposes a new simulation strategy. Some key issues such as composition prediction of the reaction vapors

selection of thermodynamic methods

estimation of tray efficiency

etc. are discussed. The proposed simulation approach is applied to two industrial delayed cokers with typical technological processes in a Chinese refinery by using PRO/II. The simulation results obtained are well consistent with the actual operation data

which indicates that the presented approach is suitable to simulate the main fractionators of delayed cokers or other distillation columns consisting of de-superheating sections and rectifying sections.

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