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Regenerative Thermal Oxidizer (RTO) Incinerator

Regenerative Thermal Oxidizer (RTO) Incinerator

Regenerative Thermal Oxidizer(RTO) is a kind of organic waste gas treatment equipment for medium and high concentration. The regenerative incinerator oxidizes the organic matter (VOCs) in the waste gas into corresponding carbon dioxide and water at high temperature, thereby purifying the waste gas and recovering the heat released when the waste gas is decomposed. The three-chamber RTO waste gas decomposition efficiency reaches more than 99%. The heat recovery efficiency reaches more than 95%, the operating cost is low, and it can handle low-concentration exhaust gas with large air volume. When the concentration is slightly higher, it can also perform secondary waste heat recovery, which greatly reduces production and operation costs. The main structure of RTO is composed of combustion chamber, regenerator and switching valve.

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Application

Coating industry, Printing industry, Painting industry, Pharmaceutical Chemicals, Paint and ink manufacturing, Circuit board production etc.

Working Princple

The exhaust gas with VOC enters the RTO. In the preheating chamber, the honeycomb ceramic body preheats the exhaust gas to above 760°C, and stays in the oxidation chamber for about 1.0s. VOC is oxidized into carbon dioxide (CO2) and water (H2O) by oxygen in a high temperature environment. , heat is released during the oxidation process, which further increases the temperature of the exhaust gas. The burner controls the minimum temperature of the oxidation chamber to not be lower than 820°C, and then passes through the regenerator, and the ceramic body absorbs the heat of the high-temperature gas to prepare for the next cycle to preheat the exhaust gas. , the cooled flue gas is discharged from the chimney to the atmosphere. Each regenerator goes through the process of heat storage-release-purge in turn, reciprocating and working continuously; due to the existence of the third chamber, the switching of airflow is more stable. Part of the treated clean exhaust is replaced by VOC before the blower, and the regenerator is purged. After the cleaning is completed, it enters the heat storage program, which eliminates the instantaneous direct discharge state of the two-chamber RTO, making the purification efficiency reach More than 99%.

Components	Functions
Upper chamber	It provides time for the oxidation of organic matter, and also has the function of heat storage and heat release.
Lower chamber	Bear the load of the upper chamber, control the flow direction of the exhaust gas and flow out of the regenerator.
Burning system	Provide heat for the temperature rise of the system startup process and the heat balance of the operation process.
Blower	Provide sufficient power for the gas to overcome system resistance
Overtemperature relief device	Mix high-temperature gas with low-temperature gas to prevent the high-temperature gas from softening the air duct and scalding the insulation cotton
Intake device	Dilute high-concentration organic waste gas and filter tiny particles in the waste gas
Chimney	Since the treatment efficiency cannot reach 100%, the treated waste gas must be led to high altitude

Composition of RTO waste gas treatment system

Features

1. VOC removal rate: 95% to 99%, heat exchange efficiency up to 95%; 2. Processing capacity: the three-chamber RTO can handle air volume up to 100,000Nm3/h 3. Treatment concentration:

Safe operating concentration: below 18%LEL;
Stable operating concentration: below 9%LEL;
Heat balance concentration: 3.5%LEL~4.5%LEL;
Economic benefit concentration: 4.5%LEL~9%LEL, can be used for heat recovery;
Non-economic concentration: 3.5%LEL~2.5%LEL, need to add a certain amount of gas

4. System resistance: 5000pa. 5. Operating temperature:

Heating temperature: ambient temperature ~820°C
Normal operating temperature: 820°C~850°C
Turn off the burner temperature: 850°C
Overtemperature release temperature: 870°C
Shutdown temperature: 900°C (alarm at 890°C)

6. Component configuration:

Horizontal push or lift switching valve, leakage rate 0.1%, valve plate is stainless steel, generally 304 grade, and 316 or duplex steel is configured according to needs;
High refractory aluminum silicate fiber insulation layer in the oxidation chamber and regenerator chamber, the maximum working temperature is 1260°C; the outer surface temperature ≤ ambient temperature +45°C
Heating device: gas, oil burner or electric heater

7. Operability: high degree of automation, low maintenance cost, no secondary pollution such as thermal NOx;

Model

Flow（Nm3/h）	Regenerative consumption（m3）	Area（m2）	Weight（t）	Power（kw）
5000	5	40	20	30
10000	10	46	28	37
15000	15	54	36	55
20000	20	59	44	75
25000	25	65	51	90
30000	30	71	59	110
35000	35	78	68	132
40000	40	83	73	160
50000	50	93	96	200
60000	60	104	111	220
70000	70	114	126	260

Engineering case

Regenerative Thermal Oxidizer (RTO) project case 1

Regenerative Thermal Oxidizer (RTO) loading to shipping

Related Tags

Regenerative Thermal Oxidizer rto system

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Regenerative Thermal Oxidizer (RTO) Incinerator

Application

Working Princple

Features

Model

Engineering case

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