Numerical study of air staging in a coke oven heating system

Jakub Poraj,Jakub Bodys,Jacek Smolka,Wojciech Adamczyk,Stanislaw Gamrat

doi:10.1007/s10098-016-1234-8

Jakub Poraj, Jakub Bodys + Show 3 more

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https://doi.org/10.1007/s10098-016-1234-8

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Abstract

The air staging to combustion approach introduced to a coke oven heating system as a primary method of nitrogen oxide (NO) formation reduction is considered in this paper. To numerically investigate the thermal and prompt NO formation, a heating flue model representing the most popular Polish coke oven battery was used. The model was developed and experimentally validated as a transient coupled model for the representative heating flue and the two coke ovens. Numerical simulations were performed to estimate the amount of NO passing into the atmosphere during the operation of such a heating system with and without the secondary air inlets. Various strategies for the secondary air distribution along the flue gas flow as well as the secondary air velocity were studied. The results of the numerical investigation demonstrated the substantial positive effect of the considered air staging on NO formation reduction.

Highlights

Considering its emission and significantly toxic characteristics, nitrogen oxide (NO) pollution represents an important issue in modern combustion technologies
The air staging to combustion approach introduced to a coke oven heating system as a primary method of nitrogen oxide (NO) formation reduction is considered in this paper
An illustration of the European Union developed on the basis of NO and SO2 emission coming from Spain was presented by Garcıa-Gusano et al (2015)

Summary

Introduction

Considering its emission and significantly toxic characteristics, nitrogen oxide (NO) pollution represents an important issue in modern combustion technologies. This substance contributes to smog formation, causes plant decay and negatively impacts living creatures. The economic aspects were investigated by those authors, and conclusions based on renewable energy sources were presented. Ilamathi et al (2013) analysed renewable sources located in sea-shore district of Poland. The investigation of this character was not presented for other districts of Poland. According to Houshfar et al (2014), the emission due to pyrolisis and combustion processes takes a position of serious pollutant in such an industrial sectors as those located in the south of Poland

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