1、 Technical Introduction
The TDL (Pulse High Voltage DC Honeycomb Ion) technology, which has independent intellectual property rights, uses a dual dielectric barrier discharge form to generate plasma. The density of the generated plasma is 1500 times that of other technologies. This technology was jointly developed by the Chengdu Branch of the Chinese Academy of Sciences and Fudan University. Since 1994, it has been developed by Fudan University and was initially used for the decomposition and treatment of Freon and Halong substances. It is a scientific research project established by the country to study and protect the Earth's ozone layer. Later, we collaborated with Zhongke Purui to develop and expand its application areas, extending it to industrial odor, peculiar smell, and toxic and harmful gas treatment. Zhongke Purui has pioneered the large-scale industrial application of TDL technology, which is energy-saving, environmentally friendly, and has a wide range of applications. Almost all odors and odors generated in chemical production processes can be treated, and it has a good decomposition effect on dioxins. Academician Hou Li'an commented that "the invention of TDL technology lays the foundation for clean chemical production and is a technological revolution in modern chemical industry production." This technology is the world's first and internationally leading, and belongs to the true creation of China.
TDL plasma industrial waste gas treatment technology has developed standardized waste gas treatment equipment, which uses the generated high-energy electrons, free radicals and other active particles to activate, ionize, and crack various components in industrial waste gas, causing a series of complex chemical reactions such as decomposition and oxidation. After multi-stage purification, it eliminates various odor and odor pollutants emitted from pollution sources, achieves low toxicity and non toxicity of toxic and harmful gases, and protects the human living environment.
TDL plasma industrial waste gas treatment technology, as a new environmental pollution control technology, has opened up a new idea for the treatment of industrial waste gas due to its efficient decomposition of pollutant molecules and low treatment energy consumption. The application of this technology has the significance of a milestone in modern industrial production.

2、 Principle of Technical Function
Low temperature plasma is the fourth state of matter after solid, liquid, and gas. When the applied voltage reaches the discharge voltage of the gas, the gas is broken down, producing a mixture including electrons, various ions, atoms, and free radicals. During the discharge process, although the electron temperature is high, the temperature of heavy particles is low, and the entire system exhibits a low-temperature state, hence it is called low-temperature plasma. Low temperature plasma degradation of pollutants utilizes the interaction between high-energy electrons, free radicals, and other active particles with pollutants in exhaust gas, causing pollutant molecules to decompose in a very short period of time and undergo various subsequent reactions to achieve the goal of pollutant degradation. (Note: Compared to high-temperature plasma, low-temperature plasma operates at room temperature.)
The TDL plasma reaction zone is rich in highly energetic substances such as high-energy electrons, ions, free radicals, and excited state molecules. The pollutants in the exhaust gas can react with these high-energy substances, causing them to decompose in a very short period of time and undergo various subsequent reactions to achieve the purpose of explaining pollutants. Compared with the low-temperature plasma technology generated by traditional corona discharge, TDL plasma technology has a discharge density 1500 times higher than corona discharge, which is why traditional low-temperature plasma technology fails to treat 99% of industrial waste gas.


3、 The basic process of plasma removal of pollutants
Process 1: Direct bombardment of high-energy electrons
Process 2: Oxidation of O atoms or ozone
O2+e→2O
Process 3: Oxidation of OH radicals
H2O+e→OH+H
H2O+O→2OH
H+O2→OH+O
Process 4: Reaction of Molecular Fragments and Oxygen
4、 Technical features
The TDL plasma industrial waste gas treatment equipment has independent intellectual property rights. After 18 years, the invention of this technology has laid the foundation for clean chemical production and is a technological revolution in modern chemical industry production. Applied for 26 national patents, leading the world in the industrial application of plasma technology, internationally advanced, and truly created by China.
Compared with the commonly used odor gas treatment methods in China, TDL plasma industrial waste gas treatment technology has the following characteristics:
The application of TDL low-temperature plasma technology in the treatment of odorous gases has the advantages of good treatment effect, low operating cost, no secondary pollution, stable operation, easy operation and management, and immediate use.
① TDL dielectric barrier discharge generates high electron energy and high low-temperature plasma density, reaching 1500 times that of commonly used plasma technology (corona discharge), and can interact with almost all odorous gas molecules;
② TDL technology has a fast reaction speed, with gas passing through the reaction zone at a speed of 3-15 meters per second, achieving good processing results. Other technologies have difficulty achieving the processing effect of ZLDL with gas passing through the reaction zone at a speed of 0.01 meters per second;
③ The gas passage section is entirely made of corrosion-resistant materials such as stainless steel, and the electrodes do not come into direct contact with the exhaust gas, fundamentally solving the corrosion problem of low-temperature plasma technology equipment; Other technologies involve direct contact between gas and electrodes, which can cause severe corrosion within 3 months or 1 year. Even if the gas passing through is not corrosive, the generated ozone can corrode the electrodes;
④ The TDL host is a complete industrial waste gas treatment device, equipped with a TDL dedicated tower in front, which can effectively remove dust and moisture from the waste gas and is easy to operate;
⑤ The automation level is high, and the equipment starts and stops very quickly. It can be turned on as needed. For some chemical production discontinuities, it can be turned on during production and stopped during non production intervals, saving a lot of energy;
⑥ The operating cost is relatively low, saving 5-8 times the operating cost compared to commonly used regenerative combustion furnaces RTO. The operating cost per cubic meter of gas is only 0.3-0.9 cents, and some high concentration exhaust gases can be diluted with air and treated with TDL technology;
⑦ Widely applicable, basically unaffected by temperature and pollutant components, it has a good decomposition effect on the odor concentration of foul odors. The removal rate of foul odors reaches 80-98%, and the concentration of treated gas odor meets national standards;
⑧ TDL technology for treating industrial waste gas is not a water washing technology, but rather a direct breakdown and bombardment of pollutants by high-energy plasma, causing molecular chain breakage rather than pollutant transfer;
⑨ Important feature: Taking non methane total hydrocarbons as an example, when detected by chromatography, the removal rate of non methane total hydrocarbons may only be 45%, but the removal rate of foul odors can reach 93%. This is because after processing, some molecules of non methane total hydrocarbons become small molecules, and when detected by chromatography, they still appear as non methane total hydrocarbons; The removal rate of foul odors is high, indicating that 93% has actually decomposed
5Schematic diagram of low-temperature plasma technology process route:


The above pollutants, because some of the decomposed substances also have peculiar odors;
⑩ TDL technology is truly created in China, and European, American, and Asian countries are introducing Chinese technology to solve the problem of dioxin pollution. TDL technology is already a mature process for the world's difficult problem of dioxin, because dioxin like substances contain chlorine, most of which are electrophilic groups that are more easily bombarded by electrons.
Schematic diagram of low-temperature plasma technology process route:
After the odor gas is collected from the gas collection system, a portion of the exhaust gas needs to be pre treated to remove water and enter the plasma reaction zone. Under the action of high-energy electrons, the odor molecules are excited, and the chemical bonds between charged particles or molecules are broken. At the same time, water and oxygen in the air also produce strong oxidizing substances such as OH radicals and reactive oxygen species under high-energy electron bombardment. These strong oxidizing substances will react with the odor molecules to decompose, thereby promoting the elimination of odor. The purified gas is discharged at high altitude through the exhaust pipe.
6、 Applicable places for deodorizing equipment:
Deodorization equipment is widely used for deodorization of paint factory, rubber factory, plastic factory, paint factory, paint shop, electronics factory, paper factory, circuit board factory, packaging factory, resin factory, ink factory, medicine factory, feed factory, coating factory, textile and clothing factory, breeding and slaughterhouse, sewage pump station, garbage treatment station, sludge drying station, waterproof material factory, asphalt factory, electroplating factory, fertilizer factory, furniture factory, leather factory, tobacco factory, chemical factory, refrigeration factory, Food factory deodorization, paper factory deodorization, printing factory deodorization, feed factory deodorization, essence factory deodorization, sewage treatment plant deodorization VOC organic waste gas treatment deodorization, turtle house deodorization, 4S shop painting waste gas deodorization, hotel deodorization, shopping mall deodorization, hospital deodorization, feces treatment, synthetic fiber, synthetic resin, industrial wastewater, domestic wastewater treatment and other industries' waste gas treatment, odor treatment, exhaust gas treatment, odor purification, air purification, disinfection and sterilization.
Types of exhaust gases suitable for deodorization equipment:
Deodorizing equipment is suitable for: acetone, butanone, ethyl acetate VOC 、 Formaldehyde, acetaldehyde, ethyl acetate, benzene derivatives, benzene, toluene, xylene, styrene, alkanes, alkenes, alkynes, aromatic hydrocarbons, phenols, hydrogen sulfide, thiols, sulfides, ammonia, amines, indoles, nitro and other odors and exhaust gases.


Professional environmental governance unit: Chengdu Zhongke Purui Purification Equipment Co., Ltd. National Environmental Protection Consultation Hotline: Contact: Mr. He
Keywords: Sichuan Environmental Protection Technology Company, Chengdu Environmental Management Company, Waste Gas Treatment, VOCs Organic Waste Gas Treatment, Dust Treatment, Environmental Protection Engineering, UV Photolysis Equipment, Bag Dust Collector, Cyclone Dust Collector, Activated Carbon Box, Regenerative Thermal Incinerator (RTO), Catalytic Combustion Equipment (RCO), Spray Tower, Wastewater Treatment, Galvanized Threaded Duct, Centrifugal Fan, Furniture Paint Room Waste Gas Treatment, Wood Dust Treatment, Chemical Waste Gas Treatment, Plastic Waste Gas Treatment, Sichuan Environmental Protection Engineering, Engineering Construction, Environmental Treatment Design, China Environmental Protection Engineering,