Simulation of Burning Off Carbon Deposition in Coke Oven

• Main Authors: Joo-GuanHang, 韓裕源
• Other Authors: Keh-Chin Chang
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/76188379351658823131

碩士 === 國立成功大學 === 航空太空工程學系 === 102 === Carbon Deposits are often occurred inside the industrial coke oven during coking process. Accumulation of carbon deposits may cause a big issue, which seriously influences the coking operation. The carbon is burning off by injecting fresh air through pipes into coke oven which is an efficient way practically operated in industries. The burning off carbon deposition in coke oven performed by Computational Fluid Dynamics (CFD) method has provided an evaluation of the feasibility study. A three dimensional, transient, turbulent reacting flow simulation has performed with three different injecting air flow rate and another kind of injecting configuration. The result shows that injection higher air flow rate would effectively reduce the carbon deposits. In the meantime, the opened charging holes would suck extra oxygen from atmosphere to participate in reactions. In term of coke oven operating limits, the wall temperatures are monitored to prevent over-heating of the adiabatic walls during burn-off process. It is demonstrated that the burn-off method by injecting fresh air is feasible to remove the carbon deposits in coke oven. Due to the number of computational nodes being as huge as about 5×10^7, a result at time of 8.3 s would require 3 months computation time in the present study.