Numerical study on the effects of homogeneous reactions on the composition distributions of syngas in radiant syngas cooler

Wang, Bo; Qiu, Jianyong; Guo, Qinghua; Liu, Xiang; Gong, Yan; Xu, Jianliang; Yu, Guangsuo

doi:10.1016/j.applthermaleng.2022.118307

Cited by 4 publications

(1 citation statement)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conventional coal utilization techniques cause significant energy losses and harmful emissions, resulting in serious environmental pollution. , Coal gasification technology is an effective way to realize the clean and efficient utilization of coal, in which the entrained-flow gasification technology has been commonly used nowadays in the coal chemical industry with the advantages of good adaptability of coal types, high gasification efficiency, and large capacity scale. , Raw coal undergoes a complex gasification reaction in the gasifier to produce high-temperature syngas dominated by CO and H 2 , and the sensible heat in the syngas needs to be recovered to improve the energy utilization rate. − According to the different cooling methods of the outlet syngas, the entrained-flow gasification process can be divided into the quenching process, radiant syngas cooler (RSC) process, and radiation-quenching process. The radiation-quenching process combines the advantages of the other two processes, which has more potential for development as it cools and humidifies the syngas, recovering the sensible heat in the syngas. − …”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Integral Thermal Deformation Behavior of a Radiant Syngas Cooler for an Entrained-Flow Gasifier

Zhang,

Xu,

Gong

et al. 2023

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

A radiant syngas cooler (RSC) is an important device in the heat recovery type of entrained-flow gasifier that can effectively improve the energy utilization efficiency. In this work, a three-dimensional (3D) industrial RSC model is established. Heat transfer characteristics and integral thermal deformation behavior are studied by numerical simulation, combining the principle of fluid–structure coupling to explore the variation of integral thermal deformation under different operating conditions. The simulation results indicate that the setting of the radiation screen has different effects on the uneven heating of the membrane wall in the circumferential direction, varying with heights. An equivalent stress concentration area in the middle and upper parts under industrial constraints is shown on the cylinder membrane wall. The equivalent stress of the upper cone membrane wall surface exceeds the allowable stress of the material. The thermal deformation of the top sealing structure and the bottom is 45.6 mm and 64.5 mm, respectively. The upward movement of the fixed support reduces the thermal deformation of the top sealing structure while increasing the thermal deformation of the bottom. An increase in the inlet temperature causes an increase in the thermal deformation of the top sealing structure and the equivalent stress at the middle and upper parts of the cylinder membrane wall while having an insignificant impact on the thermal deformation of the bottom. The deposition of ash and slag reduces the thermal deformation of the top sealing structure and the total heat transfer rate of the cylinder membrane wall. With a slight effect on the total thermal deformation, increasing the slag thickness decreases the total heat transfer rate.

show abstract