These developments affect the efficiency of modern industrial furnaces: With optimized vacuum systems, the efficiency will be much higher as compared to older ovens. Today, a user should evaluate all the options that arise due to modern and innovative technology.
Vacuum Pump Operation in Steel Degassing
The power intake of the forevacuum system only represents a comparably small part of the vacuum furnace’s overall power consumption. However, over the entire service life of the vacuum furnace, cost savings can be significant, and an investment makes sense.
Modular vacuum systems
In modern steel degassing, innovative mechanical pump systems are used instead of energy-intensive steam ejector systems. They enable operators to reduce operating costs and emissions. The modular concept of Oerlikon Leybold pumps for vacuum technology in steel degassing systems has proven its merits: customers such as Siemens Metals Technologies and Inteco ordered mechanical vacuum systems for steel degassing plants, e.g., for end users in Mexico or China. In order to meet with the growing requirements for explosion protection, some of these projects have been supplied with ATEX certified degassing modules.
A Worldwide Solution
Within the modules, the company only uses two different vacuum pump types, both of which were developed in-house and are manufactured in the Cologne plant in large quantities. These are mainly the Roots pump RUVAC WH7000 and the screw type vacuum pump DRYVAC DV1200. Both types of pumps are the most advanced versions of their pump types, optimized for use in demanding applications.
The use of just two types of pumps which are quickly available worldwide, simplifies service and spare parts stock keeping for the end customer. Modern pump technology is robust, reliable, and environment friendly thus, reducing operating costs. Hence, the systems fit exactly to the increasing requirements of steel manufacturers in order to produce high quality steel with lower emissions and costs.
* First published in PROCESS Worldwide, Subcontinent Edition, August 2015