RTO Process Overview: Waste gases are pre-treated with various measures before mixing, removing sticky substances and particulates. They then pass through a zeolite molecular sieve wheel, where VOC molecules are adsorbed on its surface. The waste gases after passing through the zeolite wheel can be directly emitted. The zeolite wheel section that adsorbs a large amount of VOC enters the high-temperature desorption zone. Using a low airflow of high-temperature waste gases, the VOC molecules on the zeolite wheel are desorbed, forming high-concentration waste gases. These are then sent to the downstream catalytic oxidation system for thermal oxidation treatment, and the purified waste gases can be directly emitted.
Pre-treatment System: Due to the presence of solid particles like dust in the exhaust gases, the zeolite molecular sieve has strict requirements for the particle content and size of the exhaust gases. Therefore, a four-stage filter system is set before the zeolite wheel: preliminary filter + medium efficiency filter + sub-efficient filter + high efficiency filter. This achieves a dust purification rate of ≧99% for particles 0.5um and larger in the gas. Our company's designed and manufactured filters feature modular design for easy assembly and disassembly, ensuring the equipment is highly practical.
Zeolite Wheel Concentration Unit: After filtration, the waste gas enters the zeolite wheel adsorption. The zeolite wheel is divided into three zones.
Domain: An adsorption area, accounting for 5/6 of the total surface area, where organic gases are adsorbed in the honeycomb zeolite and clean gas is released. The 1/12 area of the rotating wheel is the desorption area, heated at high temperatures to volatilize VOCs from the gas; another 1/12 area is the cooling zone, where the waste gas at normal temperature is cooled by passing through the high-temperature area. The resulting gas is then heat-exchanged with high-temperature flue gas to reach 200°C and enters the desorption area, forming desorption gas, which is then processed by CO catalytic combustion.
RTO Regenerative Thermal Oxidizer Unit: After desorption, the gas has formed a high concentration of organic gases, which are then introduced into the RTO by the RTO fan. Inside the RTO, they undergo thermal oxidation to produce carbon dioxide and water, meeting emission standards. Additionally, the heat generated by thermal oxidation can reduce the consumption of auxiliary fuel in the system. Once a certain concentration is reached, the heat released by thermal oxidation can not only meet the RTO's own operational needs but also provide heat for temperature and humidity regulation as well as desorption air.
RTO Regenerative Thermal Oxidizer Overview:
Heating the organic waste gas to above 760°C, the volatile organic compounds (VOCs) in the waste gas are oxidized and decomposed into carbon dioxide and water in the combustion chamber. The high-temperature gas produced by the oxidation passes through specially designed ceramic regenerative heat exchangers, heating the ceramics and storing the heat. In the subsequent process, the waste gas passes through the "stored heat" ceramics, transferring the ceramic's heat to the waste gas. The organic waste gas, acting as a heat exchange medium through the ceramics, undergoes repeated heat exchange, thereby saving fuel consumption for waste gas heating and reducing operating costs. Under medium to high concentration conditions, the RTO can output excess heat, which can be utilized in the form of steam, hot air, or hot water, achieving both environmental protection goals and economic benefits.
Overview: Three-Bed Heat Storage RTO Incinerator
The three-bed regenerative thermal oxidizer (RTO) incinerator is primarily composed of the RTO main body, an air distribution and switching valve assembly, ceramic regenerative beds, combustion chamber, burner components, and an electrical control system.
The RTO equipment is designed with a three-tower structure, featuring high removal efficiency, stable operation, and low energy consumption. Exhaust gases containing volatile organic compounds (VOCs) are routed through valve switching into the RTO's heat storage bed. The exhaust is gradually heated by the heat storage ceramic before entering the combustion chamber. Inside the combustion chamber, VOCs are oxidized at high temperatures, releasing heat. The hot air formed is then exchanged with the stored ceramic in another heat storage bed, accumulating heat to reduce the consumption of auxiliary fuel. While the heat storage ceramic is heated by the hot air, the cleaned gas, which has been oxidized, gradually cools, resulting in an outlet temperature slightly higher than the RTO's inlet temperature.
The three-bunk thermal storage RTO incinerator features thermal expansion freedom, ensuring a service life of not less than 10 years during full-load production and long-term shutdowns.
Introduction to the three-bed heat retention RTO process principle:
This process utilizes a three-chamber regenerative ceramic RTO incineration unit. It features one incineration chamber and three energy recovery sections (Chambers A, B, and C), ceramic regenerators. By switching the inlet and outlet gas valves, the high-temperature flue gas temperature is recovered, achieving energy-saving and purification effects.
