Optimal design of heat exchanger header for coal gasification in supercritical water through CFD simulations

Lei Huang; Lin Qi; Hongna Wang; Jinli Zhang; Xiaoqiang Jia

doi:10.1016/j.cjche.2017.03.017

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Optimal design of heat exchanger header for coal gasification in supercritical water through CFD simulations

Article | Updated：2026-01-06

- Optimal design of heat exchanger header for coal gasification in supercritical water through CFD simulations
- Chinese Journal of Chemical Engineering Vol. 25, Issue 8, Pages: 1101-1108(2017)
- Affiliations：
  
  1. Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  2. Key Laboratory of Systems Bioengineering(Ministry of Education), Tianjin University,Tianjin,China,300072
  3. SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.03.017
  CLC：
- Published：2017
- Accepted：
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Lei Huang, Lin Qi, Hongna Wang, Jinli Zhang, Xiaoqiang Jia. Optimal design of heat exchanger header for coal gasification in supercritical water through CFD simulations[J]. , 2017, 25(8): 1101-1108.
DOI：

Lei Huang, Lin Qi, Hongna Wang, Jinli Zhang, Xiaoqiang Jia. Optimal design of heat exchanger header for coal gasification in supercritical water through CFD simulations[J]. , 2017, 25(8): 1101-1108. DOI： 10.1016/j.cjche.2017.03.017.

摘要

Abstract

Heat exchangers play an important role in supercritical water coal gasification systems for heating feed and cooling products. However

serious deposition and plugging problems always exist in heat exchangers. CFD modeling was used to simulate the transport characteristics of solid particles in supercritical water through the shell and tube of heat exchangers to alleviate the problems. In this paper

we discuss seven types of exchangers (A

F and G)

which vary in inlet nozzle configuration

header height

inlet pipe diameter and tube pass distribution. In the modeling

the possibility of deposition in the header was evaluated by accumulated mass of particles; we used the velocity contour of supercritical water (SCW) to evaluate the uniformity of the velocity distribution among the tube passes. Simulation results indicated that the optimum heat exchanger had structure F

which had a rectangular configuration of tube pass distractions

a bottom inlet

a 200-mm header height and a 10-mm inlet pipe diameter.

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