What is an RTO Incinerator? What does RTO Furnace Mean?
What is an RTO Incinerator? What does RTO Furnace Mean?
RTO furnace refers to a device or equipment for chemical reactions under high temperatures. It includes two parts: heating and reaction. Generally, the heating part is called the hot chamber or combustion chamber, and the reaction part connected to the hot chamber is called the reactor (or workshop).
Regenerative Thermal Oxidizer (RTO) is also called a regenerative incinerator. This technology is to heat the organic waste gas, directly oxidize and decomposes it into C02 and H20 when it reaches a high temperature, so as to treat the waste gas pollutants and recover the heat generated during decomposition. It is an energy-saving environmental protection device for treating medium and high-concentration organic waste gas.
RTO furnace is generally composed of three parts: heat source (such as electricity, oil, gas), fuel (such as coal, oil, etc.), and oxidant. The heat source is usually steam or hot water.
In order to distribute the temperature evenly, porous materials are usually made into jackets as heat transfer channels; In order to quickly transfer heat to reactants and make them reach the required temperature, appropriate heat exchangers must be used; In order to prevent accidents caused by local overheating, a cooling water system is also provided to take away excess heat; In addition, there are oxygen supply system and safety protection system. Intermittent heaters and continuous heaters are commonly used in industrial applications.
Working principle of RTO furnace:
Common RTOs are divided into two chamber types, three-chamber type, and more supporting combustion chambers. Their working principles are similar: the organic waste gas is transported to the heat storage chamber 1 through the induced draft fan for temperature rise, absorbing the heat stored in the heat storage body, and then entering the incinerator for further combustion. The temperature rises to the set temperature. In this process, the organic components are completely decomposed into C02 and H2O. As the exhaust gas absorbs the heat recovered in the previous cycle in heat storage chamber 1, the fuel consumption is reduced. The treated high-temperature waste gas enters heat storage chamber 2 for heat exchange, and the heat is absorbed by the heat storage body and then discharged. The heat stored in heat storage chamber 2 can be used to heat the newly imported exhaust gas in the next cycle. After the process is completed, the system automatically switches the inlet and outlet valves to change the flow direction of waste gas, so that the organic waste gas enters through the heat storage chamber 2. After incineration, it is discharged after heat exchange by heat storage chamber 1. In this way, the system continues to operate alternately.
The working principle of the RTO furnace is to put the organic waste gas into the heat storage chamber 1 through the induced draft fan for heat absorption, and then into the incineration chamber for further heating after the temperature rise so that the organic waste gas will continue to rise until the organic components are completely decomposed into C02 and H2O. As the waste gas uses the heat recovered from the heat accumulator during the heating process, the fuel consumption is less. The waste gas leaves the combustion chamber after treatment and enters the heat accumulator chamber 2 to release heat before emission. The heat accumulator in heat accumulator chamber 2 absorbs heat and is used to heat the newly imported low-temperature waste gas in the next cycle. At the same time, the partially purified gas is introduced to purge the heat storage chamber 3 for the next round of heat exchange.
At this moment, after, process 1 is completed, switch the inlet and outlet valves. The gas enters from the heat storage chamber 2, discharges from the heat storage chamber 3, and the heat storage chamber 1 is purged; The next cycle is switched to regenerative chamber 3 for entering, regenerative chamber 1 for discharging, and regenerative chamber 2 for purging. In this way, the gear sequence operation is switched alternately. In addition, in order to improve the utilization rate of heat energy, a heat exchanger can be set behind the RTO incinerator to enhance the utilization of waste heat.