Reheating furnace

Process description

Heat treatment changes material structure and properties. The annealing process is one of many heat treatment steps. The material is thereby heated in a controlled manner and, depending on the desired property, cooled after a certain holding time at different speeds. Continuous but also discontinuous heat treatment furnaces of different types are used for this purpose.   

Energy input to the furnace is carried out either electrically or with the help of burners, where burner systems and burner positions differ from furnace to furnace. Burner systems with air/oxygen-enrichment and oxyfuel burner systems fundamentally exhibit higher thermal efficiency and other advantages over cold air burner systems.       

Gas Application

Oxyfuel-Burner 

The combustion process is carried out using oxygen burners (oxyfuel-burners) operated with pure oxygen or oxygen-enriched air as an oxidising agent.    

Compared to burners using air as an oxidising agent they have a number of process technology advantages:  

• Higher combustion efficiency
• Higher melting rate
• Faster heating-up times
• Lower fuel consumption
• Higher processing temperatures possible
• Faster reaction speeds
• Lower exhaust gas levels
• Less dust
• Lower emissions
• Lower production costs

Messer Solution

In addition to the gases required for your process, Messer offers a variety of equipment for its optimisation under the brand names Oxipyr and Oxijet. 

In order to select the optimum system, experts from Messer first carry out a comprehensive process analysis. Following calculations and basic engineering, suggestions are made for optimisation and further procedures.

Oxipyr – Burner Technology

The characteristics of the burner types are versatile and range from low to high momentum burners, oxyfuel to oxygen/air mixing burners and burners for different fuels or fuel combinations. The systems are controlled manually, semi- or fully automatically following recipes or temperature.