Technical Application

Introduction to VOCs Process

I. Environmental Protection Policy Requirements

Shandong Province's "Emission Standards for Volatile Organic Compounds, Part 7: Other Industries" (DB37/2801.1-2016) relevant regulations on benzene, toluene, xylene, benzene series, and volatile organic compounds (VOCs) emissions from special-purpose vehicles; "Comprehensive Emission Standards for Regional Air Pollutants in Shandong Province" (DB37/2376-2013) emission concentration regulations for SO2, NOx, and particulate matter in the fourth-stage key control area; "Comprehensive Emission Standards for Air Pollutants" (GB37/16297-1996) emission rate regulations for SO2, NOx, and particulate matter.

 

 

 

 

VOC treatment process: pretreatment-activated carbon adsorption-desorption regeneration-catalytic combustion, then discharged through the exhaust pipe

Waste gas treatment process is as follows:

             

II. Technology Application

The VOCs process adopts a concentrated adsorption + RTO incineration scheme. The waste gas currently emitted from the workshop is collected through pipelines, and the collected waste gas is treated through activated carbon adsorption desorption + catalytic combustion, and finally discharged into the atmosphere through a single exhaust pipe. The pipeline connections and routes should be smooth, the air flow resistance in the pipe should be minimized, the natural air lift should be fully utilized, and the pipeline layout should be based on the principle of not affecting the later optimization of this equipment, with reasonable and durable pipe diameter and wall thickness.

Technology Application

The VOCs process adopts a concentrated adsorption + RTO incineration scheme. The waste gas currently emitted from the workshop is collected through pipelines, and the collected waste gas is treated through activated carbon adsorption desorption + catalytic combustion, and finally discharged into the atmosphere through a single exhaust pipe. The pipeline connections and routes should be smooth, the air flow resistance in the pipe should be minimized, the natural air lift should be fully utilized, and the pipeline layout should be based on the principle of not affecting the later optimization of this equipment, with reasonable and durable pipe diameter and wall thickness.

 

 

 

III. Process Characteristics

The system design adopts a dust pretreatment + activated carbon adsorption concentration + desorption + catalytic combustion process. The waste gas generated in the workshop is collected by a fume hood, enters the branch pipe, the branch pipe is equipped with a regulating valve to adjust the air volume, the waste gas enters the main pipe from the branch pipe, and then enters the dust remover to remove dust particles, and then enters the activated carbon adsorption system. The adsorbed gas is the standard gas, which is directly discharged into the atmosphere through the adsorption fan and a 20m high exhaust pipe.

When the activated carbon adsorption is saturated, the system enters the desorption state, the electric heater of the catalytic combustion is started, the desorption air valve of the corresponding activated carbon is opened, and the adsorption air valve of the activated carbon is closed, and the system enters the desorption state.