Rotary Regenerative Thermal Oxidizer (R-RTO)

Rotary Regenerative Thermal Oxidizer (R-RTO)

Widely used in film production lines, etc.

Product Overview

Since the revision of the Air Pollution Control Law in 2004, VOC emission regulations have been promoted in Japan, and many RTO (Regenerative Thermal Oxidizer) systems have been introduced. We have delivered more than 500 RTO units. We have a wide range of models, including rotary types with minimal pressure fluctuation and five-tower types capable of handling large air volumes, and we have extensive experience in energy conservation, including heat recovery using waste heat boilers and regenerative solvent combustion. We also have an independent maintenance department to provide full support.

The system consists of 6 to 8 chambers, with special rotary valves that continuously switch the exhaust gas between ascending and descending flows, thus minimizing pressure fluctuations in the production line, and is widely used in film production lines. At the top, the temperature is controlled at 820°C by a heater, and the exhaust gas is heated by the heat storage material as it rises, then cooled and exhausted as it descends while giving heat to the heat storage material. Organic matter is oxidized and decomposed in the upper hot zone and rendered harmless. When switching from up-flow to down-flow, the system is purged with clean gas to prevent unprocessed organic matter that has remained in the lower part from mixing with the purifying gas.
processing mechanism
(Cycle 1)
inspiration The process gas is directed to the heat storage chambers (1) to (3) by the distribution valve, and is heated to near the temperature of the combustion chamber by being given heat as it rises through the heat storage chambers.
disassembly The exhaust gas components are further oxidized and decomposed by heating to 820°C in the combustion chamber.
exhaust The decomposed clean gas is exhausted by giving heat to the heat storage elements as it descends through the heat storage chambers (5) to (8).
purge At this time, in the thermal storage chamber (4), as a preliminary step before switching from intake to exhaust, residual unprocessed gas in the thermal storage chamber is driven out to the combustion chamber by a portion of clean gas.
processing mechanism
(Cycle 2)

Rotation of the distribution valve switches intake from (1) to (3) to (8) (1) (2), exhaust from (5) to (8) to (4) to (7), and purge from (4) to (3), respectively.Thus, efficient exhaust gas treatment is achieved by continuously switching between intake, exhaust, and purge.

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