LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Effects of top gas recycling on in-furnace status, productivity, and energy consumption of oxygen blast furnace

Photo from wikipedia

Abstract With its advantages of high productivity, high pulverized coal rate, low fuel rate, and low CO2 emissions, the oxygen blast furnace (OBF) process with top gas recycling is considered… Click to show full abstract

Abstract With its advantages of high productivity, high pulverized coal rate, low fuel rate, and low CO2 emissions, the oxygen blast furnace (OBF) process with top gas recycling is considered as a promising ironmaking process. In this work, a two-dimensional computational fluid dynamics model was established to simulate the transfer process and reaction behavior in an OBF with different flowrates of recycled gas. The effects of top gas recycling on in-furnace status, productivity, and energy consumption of the OBF were analyzed. The results indicated that, with an increase of the flowrate of the recycled gas in the shaft (under conditions ranging from 300 to 600 Nm3/t hot metal), the overall temperature, CO concentration, and degree of reduction in the OBF increased significantly. Comparing the performance of a traditional blast furnace with this system, the productivity of the OBF increased by 5.3%–35.3% and the energy savings reached 27.3%–35.9% when employing different criteria for energy consumption. This study may provide important perspectives for OBF application and industrial energy conservation.

Keywords: energy; productivity; top gas; furnace; blast furnace

Journal Title: Energy
Year Published: 2018

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.