Organic waste gas catalytic incinerator

1Organic waste gas catalytic incineratorPurpose and Introduction

Organic waste gas is a common pollutant emitted by industries such as petrochemicals, light industry, plastics, printing, and coatings. Organic waste gas often contains hydrocarbon compounds (aromatics, alkanes, alkenes), oxygen-containing organic compounds (alcohols, ketones, organic acids, etc.), and so on. If these exhaust gases are not treated and directly discharged into the atmosphere, they will cause serious pollution to the environment and harm human health. Traditional methods for purifying organic waste gas include adsorption, condensation, and thermal combustion, which often have disadvantages such as secondary pollution, high energy consumption, and susceptibility to organic waste gas concentration and temperature limitations.

IIOrganic waste gas catalytic incineratortechnological process

The process flow of adsorption concentration desorption catalytic combustion. Composed of multiple activated carbon adsorbers and a catalytic burner (supplemented by low-pressure fans, valves, etc.). After pre-treatment to remove dust and particulate matter, the exhaust gas is sent to an activated carbon adsorber. Considering the amount of exhaust gas, the activated carbon adsorber adopts a multi adsorption desorption method, and the adsorption desorption bed adopts the principle of alternating desorption. When the adsorption of adsorption desorption bed I approaches saturation (pressure difference), the exhaust gas inlet and outlet at both ends of adsorption desorption bed I are closed (other sets continue to adsorb), and the desorption inlet and outlet are opened. Then, the activated carbon adsorber is desorbed and desorbed from the activated carbon using hot air flow, and organic matter is desorbed from the activated carbon. During the desorption process, the organic waste gas has been concentrated, with a concentration several tens of times higher than before. The concentrated waste gas is sent to the catalytic combustion device and discharged as CO2 and H2O.

After completing desorption and desorption, adsorption desorption bed I enters a standby state. When adsorption desorption bed II approaches saturation, the system automatically opens adsorption desorption bed I and simultaneously desorbs adsorption desorption bed II.

After completing desorption and desorption, adsorption desorption bed II enters a standby state. When adsorption desorption bed III approaches saturation, the system automatically opens adsorption desorption bed II and desorbs adsorption desorption bed III. Repeat this cycle.

When the concentration of organic waste gas reaches 8000-10000mg/m3, spontaneous combustion can be maintained in the catalytic bed without external heating. This solution not only greatly saves energy consumption, but also reduces equipment investment due to the catalytic burner's processing capacity only requiring 1/10 of the original exhaust gas treatment capacity. Suitable for both continuous and intermittent work.

IIIOrganic waste gas catalytic incineratoradvantage:

1. Due to its low ignition temperature, it is an ideal method for treating organic pollutants through catalytic reactions (without open flames), which has the advantages of wide applicability, simple structure, high purification efficiency, energy saving, and no secondary pollution;

2. High purification efficiency, reaching over 98%, ensuring that the exhaust meets environmental emission standards;

3. Carry out flameless combustion, set up multiple facilities, and ensure reliable equipment operation;

4. Low ignition temperature, high heat transfer and heating efficiency, low energy consumption, and low operating costs;

5. The equipment layout structure is compact, occupying a small area, saving civil engineering and installation costs, and facilitating operation and maintenance management;

6. Adopting a highly sophisticated waste heat recovery system to recover waste heat, the normal production process does not require any fuel and generates superheated high-temperature steam, which has significant economic benefits;

7. Adopting a rectangular catalytic reactor facilitates the loading of catalysts and facilitates easy replacement, installation, and maintenance;

8. Targeted use of palladium and platinum stainless steel honeycomb catalysts imported from abroad, with high activity, good high-temperature stability (up to 730 ℃), high mechanical strength, long service life (up to 4-5 years), reduced resistance pressure, easy cleaning, and wide adaptability.

9. Low ignition temperature, catalytic ignition temperature: 230-370 ℃, saving energy.

10. Compared with direct combustion, catalytic combustion of organic waste gas has significant characteristics of low ignition temperature and low energy consumption. In some cases, no external heating is required after reaching the ignition temperature.

4Organic waste gas catalytic incineratorBurning adaptability

Organic waste gas catalytic incineratorBurning objects: organic waste gas, coating waste gas, odorous waste gas

5Organic waste gas catalytic incineratorBurning occasion:

The concentration of organic waste gas is low, and the treatment capacity of organic waste gas is relatively large;

Commonly used in situations where a small amount of heat energy needs to be recovered during the production process;

For example: rotary printing, food baking, chemical production, etc.

Exhaust gas treatment capacity: 1000-100000 Nm 3/h