OG Gas Recovery System and Its Gas Utilization

Abstract

In these days when energy saving is urgently emphasized in steel works, LD gas recovery is expected to become more and more popular since it satisfied the requirement of the time as the most effective energy saving in the BOF plant.
60 percent or more of total energy contained in the gas generated in the BOF vessel can be recovered as usable gas.
Recently, the recovered LD gas accounts for approx.
6 percent of the total by-product gas in the integrated steel works.
In this paper, the concept, equipment, operation, and actual results of OG system are mentioned as the typical process for the gas recovery system.
Only a half year is enough to recover the additional investment for gas recovery facilities in case of two out of three BOF.
In Japan, more than 60 percent of BOF are operating with gas recovery system in 1977.
In foreign countries, BOF with gas recovery equipment are increasing in number too.