ALSTOM Regenerative Oxidizers are devices that use heat to convert harmful pollutants such as VOCs, air toxicants and odors into harmless CO2 and water vapor. Regenerative thermal oxidizers (RTOs) operate at over 815 oC. This system is equipped with ceramic-packed bed regenerative heat exchangers to recover valuable heat generated during the oxidation process and use it as the energy source to preheat incoming process gases.

 

 

Food processing, printing (for paper, wooden boards, metals), painting, synthetic leather making, paper processing, pharmaceutical, detergent making, synthetic resin making, fish offal and remnant processing, petrochemical, organic synthesis, activated carbon making, rubber producing, insulation material producing, sewage treatment, etc.

• ALSTOM RTOs achieve and maintain destruction/removal efficiency (DRE) levels of 95% to 99+%.
• Regenerative heat exchange canisters are packed with heat transfer media to recover and reuse 80% up to 95% of the available energy from waste heat generated during the oxidation process. You save fuel, money and minimize CO2 generation.
• Automatic control system with various safety devices assures safe operation and saves labor.
• Installation is simple and quick. Inspection and maintenance are also easy.
• ALSTOM K.K. will design and manufacture a complete RTO system, optimizing waste heat recovery for economical operation and which matches the needs of your industry, your company and your process.
  

Fig. A
VOC containing or odorous process exhaust gases enter the system passing vertically through one ceramic bed (shown in yellow) which preheats the gas to almost final oxidation temperature. These preheated process gases then enter a combustion chamber (shown red) where they are further heated to final oxidation temperature and held at that temperature to achieve high destruction efficiency. The now-purified, hot gases exit this chamber through the other ceramic bed cooled in an earlier cycle. Heat from the process gases is absorbed by these beds before the gases exit to atmosphere at an outlet temperature only slightly higher than the inlet temperature.

Fig. B
The cycle is repeated alternating between ceramic beds for heating and cooling.

- Fig. C
Heat transfer media - Structured packing

- Fig. D
Heat transfer media - Random packing.