Modeling of Multiphase Flow and Heat Transfer in Radiant Syngas Cooler of an Entrained-Flow Coal Gasification

2009 ◽  
Vol 48 (22) ◽  
pp. 10094-10103 ◽  
Author(s):  
Guangsuo Yu ◽  
Jianjun Ni ◽  
Qinfeng Liang ◽  
Qinghua Guo ◽  
Zhijie Zhou
Keyword(s):  
Heat Transfer ◽  
Multiphase Flow ◽  
Coal Gasification ◽  
Entrained Flow ◽  
Flow And Heat Transfer

Design and Simulation of a Hybrid Entrained-Flow and Fluidized Bed Mild Gasifier: Part 2—Case Study and Analysis

2011 ◽  
Author(s):  
A. K. M. Monayem Mazumder ◽  
Ting Wang ◽  
Jobaidur R. Khan
Keyword(s):  
Multiphase Flow ◽  
Fluidized Bed ◽  
Flow Behavior ◽  
Flame Temperature ◽  
Heterogeneous Reactions ◽  
Thermal Flow ◽  
Entrained Flow ◽  
Progressive Development ◽  
Gasification Process ◽  
Flow And Heat Transfer

To help design a mild-gasifier, a reactive multiphase flow computational model has been developed in Part 1 using Eulerian-Eulerian method to investigate the thermal-flow and gasification process inside a conceptual, hybrid entrained-flow and fluidized-bed mild-gasifier. In Part 2, the results of the verifications and the progressive development from simple conditions without particles and reactions to complicated conditions with full reactive multiphase flow are presented. Development of the model starts from simulating single-phase turbulent flow and heat transfer in order to understand the thermal-flow behavior, followed by introducing seven global, homogeneous gasification reactions progressively added one equation at a time. Finally, the particles are introduced, and heterogeneous reactions are added in a granular flow field. The mass-weighted, adiabatic flame temperature is validated through theoretical calculation and the minimum fluidization velocity is found to be close to Ergun’s correlation. Furthermore, the predicted exit species composition is consistent with the equilibrium values.

Effects of the bubbles in slag on slag flow and heat transfer in the membrane wall entrained-flow gasifier

2017 ◽  
Vol 112 ◽  
pp. 1178-1186 ◽  
Author(s):  
Binbin Zhang ◽  
Zhongjie Shen ◽  
Dong Han ◽  
Qinfeng Liang ◽  
Jianliang Xu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Entrained Flow ◽  
Flow And Heat Transfer ◽  
Entrained Flow Gasifier

CFD Modeling of the Multiphase Flow and Heat Transfer for Piston Gallery Cooling System

2007 ◽  
Author(s):  
Yong Yi ◽  
Madhusudhana Reddy ◽  
Mark Jarrett ◽  
Pin Shyu ◽  
Cletus Kinsey ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Multiphase Flow ◽  
Cooling System ◽  
Cfd Modeling ◽  
Flow And Heat Transfer
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