Open AccessNOx emission from a sulfur recovery unit thermal reactor with rounded corners or a vector wall
Author(s) -
Chun Lang Yeh
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/658/1/012016
Subject(s) - nox , thermal , nuclear engineering , sulfur , materials science , nitrogen oxides , chemistry , waste management , physics , engineering , thermodynamics , metallurgy , combustion , organic chemistry
A sulfur recovery unit (SRU) thermal reactor is important equipment in a sulfur plant. Because its operating temperature is very high, the nitrogen oxides (NOx) produced by a SRU thermal reactor is one of the possible sources of air pollution. In this paper, NOx emission from a practical SRU thermal reactor is analyzed. Both the prototype thermal reactor and its modifications, including modifying the reactor geometry and using a vector wall are compared. Simulation results show that the SRU thermal reactor with a radius of curvature 1m at the zone 1 corner has the lowest NO emission. Compared with using a choke ring, the NO concentration at the reactor exit is higher using a vector wall.