E series low temperature plasma exhaust gas purification equipment
- Product introduction
———————————— ◆ E series low temperature plasma purification equipment ◆ ————————————
E series low temperature plasma purification equipment
>>E series low temperature plasma purification equipment
Plasma is composed of a large number of electrons, ions, neutral atoms, excited atoms, photons, and free radicals, but because the number of electrons and positive ions are equal, the overall appearance is electrically neutral, so it is called "plasma" From the perspective of changes in the state of matter, plasma can be called the fourth state of matter.
Most of the plasmas used for VOCs removal belong to the category of low temperature plasmas. In the field of environmental protection, low-temperature plasmas can generally be generated by corona discharge, creeping discharge, and dielectric barrier discharge. Low-temperature plasmas generated by dielectric barrier discharge, glow discharge, corona discharge, and forehead discharge are used in the system. The temperature of electrons is as high as tens of thousands of degrees Celsius. When high-energy electrons collide with VOCs molecules, these volatile organic compound molecules are directly bombarded and degraded. With the occurrence of reactions such as excitation, ionization, dissociation, these VOCs The macromolecules are converted into non-toxic and harmless molecules such as H2O and C, thereby achieving purification effects.
Experiments and field verifications show that low-temperature plasma technology has a better purification effect on VOCs exhaust gas such as benzene, toluene, m-xylene, styrene, sulfide, and ammonia.
>>Mechanism of Low Temperature Plasma Technology for VOCs
Under the action of an external electric field, the electrons obtain energy from the electric field and become high-energy electrons. These high-energy electrons are very fast. When they contact the pollutants, they transfer their own energy to the pollutants through inelastic collisions and turn them into pollution. The internal energy or kinetic energy of biomolecules. These energy-getting molecules are excited or ionized to form active groups. On the one hand, these active genes react with pollutant molecules to finally produce CO2 and H2O. On the other hand, when the pollutant molecules obtain When its energy is greater than its own binding bond energy, the molecular bonds of the pollutant molecules are broken and decomposed into harmless gases or elemental atoms.
The plasma contains a large number of high-energy electrons, positive and negative ions, and excited particles. After the oxygen and water in the air are ionized, they become oxygen atoms and hydrogen atoms. When the oxygen atoms combine with oxygen and other single atoms, a large amount of OH and H2O are generated. Active free radicals such as O and O and highly oxidizing O3, these radicals undergo a series of complex chemical reactions with harmful gas molecules, and finally produce harmless or low-hazard products.
The physical effect is manifested in that the plates have the function of charging and collecting dust. A large number of electrons in the plasma collide with particles and cause inelastic collision and adhere to the surface to charge them. Under the action of an external electric field, the charged particles move to the dust collector and are collected by the dust collector.
The biological effect is manifested in the effect of sterilization. The positive and negative particles in the plasma cause the shear force of the electrical energy generated by the surface of the microorganism to be greater than the surface tension of the cell membrane, resulting in the destruction of the cell membrane and the death of the microorganism.
>>Typical characteristics of low-temperature plasma technology in treating VOCs exhaust gas
u Plasma equipment is basically operated at normal temperature and pressure, and the operation is simple.
u This technology can remove multi-component VOCs simultaneously.
u Plasma technology is suitable for the removal of low and medium concentrations of VOCs. It requires a higher voltage during operation, but the energy consumption is very low.
u It is usually made of 304 stainless steel. The material can be carbon steel, 201, 316L, etc.
u The purification efficiency is high. The final products are H2O, CO and CO2. When the organics are chlorinated, chlorides should be added without other intermediate by-products, which reduces the toxicity of organics and avoids the problems of post-processing in other ways.
u Excellent fire protection performance, designed with triple automatic protection function of switch, power supply and circuit.
u The equipment is small in size, compact in structure, modular in structure, and convenient to install and maintain.
>>Application scope of low temperature plasma technology for VOCs exhaust gas treatment
u Treatment of various harmful gases such as H2S, SOX, NOX, NH3, trimethylamine, methyl sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide, benzene, toluene, xylene, styrene and other malodorous gases
u Painting, spraying, ink printing, printing and dyeing workshop.
u Food, medicine, papermaking workshop.
u Exhaust gas treatment from refineries, rubber plants, chemical plants, etc.
>>Basic model and technical parameters of low temperature plasma purification equipment
The specifications and models of different manufacturers are not the same. It is common to see small and large products on the market. The following are the most reasonable and optimized size specifications designed by our company based on detailed and parameter calculations and engineers' years of field experience. We can also customize low-temperature plasma purification equipment of corresponding size and material according to customer requirements.
The basic model naming rules are as follows:
The technical parameter table is all based on 304 stainless steel. The basic dimensions of other specifications and models are the same as their corresponding air volume:
The above are the dimensions and technical parameters of conventional low-temperature plasma equipment. For larger air volume or special dimensions, please contact our engineers to customize them for you.
>>Typical application cases of plasma exhaust gas purification
>>Guangzhou Puyi Environmental Technology Co., Ltd.
Address: A1, Courtyard No. 4, Yongfeng Road, Yongshan Village, Shiji Town, Panyu District, Guangzhou
Contact: Mr. Zou