Air Flow Systems & Heat Recovery

Litzler CrossFlow

Cross-Flow

Suitable for all fiber ranges (1-480k tow), Cross-Flow is the most forgiving technology for producing oxidized fiber. Cross-Flow is proven in the field and continually improved via customer feedback and CFD engineering design.

  • Cross-Flow encourages product uniformity by its very nature of alternating airflow directions across the fiber band
  • High levels of uniformity allow the ovens to maximize speed and throughput
  • Each tow experiences even, gentle airflow to promote controlled oxidation – Alternating airflow provides even treatment of each tow over the length of the oven
  • Simple and clear airflow path through the heating system to maximize temperature, airflow and pressure uniformity
  • Airflows up to 3mps are available depending on requirements
  • Integrated heating/air systems mean smaller factory footprint
  • Cross-Flow ovens have a 100% open interior for more efficient cleaning, threading and maintenance functions – No dead spots!
  • Proven ovens with 300mm to 3,000mm wide tow bands

 Litzler Parallel Flow

Parallel-Flow

  • Airflow is directed parallel to the fiber tow path
  • Typically used for smaller tow with lighter oxidation requirements
  • Air velocities up to 5 mps
  • End-Seal design reduces tar formation versus existing designs
  • Compact design compared to existing designs
  • Improvements over competitive designs by integrating the Litzler Patent Pending G5 End-Seal chamber
  • Available in modular or field assembled configurations

Litzler Down Flow

Down-Flow

  • Airflow is directed from the top down, through and around the tow
  • Internal access for cleaning and thread-up
  • Special plenum design for uniform airflow over the tow band
  • Air velocities up to 5 mps
  • Improvements over existing designs with field tested nozzles
  • End-Seal design reduces tar formation versus existing designs
  • Improvements over competitive designs by integrating the Litzler Patent Pending G5 End-Seal chamber
  • Available in modular or field assembled configurations

Heat Recovery

Carbon fiber production requires a tremendous amount of energy during the manufacturing process. Litzler engineers have developed methods of recovering heat from the pollution control system to save costs.

  • Hot exhaust gases are treated in the pollution control device and fresh, clean, heated air is returned for use in the ovens as makeup air
  • Hot air is returned under controlled pressure to maintain proper oven balance
  • Recovered energy is used directly back in the ovens as heated makeup air
  • Recovered energy can be maximized through air-to-air or air-to-oil heat exchangers