Plasma photocatalytic deodorization equipment

Operational principle

This product combines wet foam board dust removal, spray, UV photolysis, low temperature plasma and other technologies to coordinate dust removal and odor removal.

The high humidity, high temperature, dust and odorous exhaust gas to be treated enters from the entrance section, and the gas passes through the entrance at a speed of 9~15 m / per second. After entering the box body, the wind speed is 2 m / per second. At this time, due to gravity, about 30% of the large dust particles in the exhaust gas will fall into the water tank, realizing the first dust air purification.

Through the exhaust gas of the perforated plate and the filtered water sprayed by the perforated plate, a foam layer is formed of about 20MM high, which increases the adsorption area of fine dust. Under the influence of the perforation foam impact and washing, most of the dust and some water-soluble odor molecules are coated in water. The fine dust in the exhaust gas is filtered twice. At this time, the dust content in the waste gas has been less than 90%.

The UV radiation, ozone, free radicals, excited energy and electron produced in the exhaust gas are 4.7~6.4eV, so that the polluting molecules are activated, oxidized and decomposed; subsequently, the gas containing residual trace dust and odor is further washed. The dust content of the gas has now been reduced to 10%. And the stench has been removed by a small part.

The gas containing the remaining trace dust and odor is further washed, and the small water droplets condense into the large granular drops in the mist section. At this time, the dust content of the treated gas is reduced by 95%

After the low temperature plasma treatment section, the internal energy of low temperature plasma is 5 ~ 40 eV, free radical 20 eV, excited 20 eV, electronic 20 eV, the final treatment rate of odor pollutants is more than 90%, and the treated odor gas is discharged through the fan and the chimney.

Equipment characteristics

• The equipment uses a variety of technologies to dust removal function together, compact and reasonable structure, simple and generous appearance.
• The equipment adopts the online treatment method, and flexibly places the equipment according to the production situation and location of the pollution source, which simplifies the waste gas collection pipeline, saves the cost, reduces the wind resistance, and thus reduces the energy consumption.
• The equipment is installed in a modular stacking mode, and the modules can be added or decreased according to the actual process needs.
• The equipment is all made of stainless steel 304, with high strength, corrosion resistance, high reliability and other characteristics
• The whole equipment processing process has PLC automatic control, touch screen monitoring and operation, flexible setting of cleaning spray water volume and interval time.
• Plasma power supply using high voltage ac pulse power supply, working process is not fire, short circuit open protection, according to the concentration of electric field intensity, when abnormal conditions can intelligent judgment processing power open, to the greatest extent to ensure the safe and stable operation of the system, the front pretreatment process failure, dust, exhaust gas concentration over low temperature plasma set safety range, plasma power supply automatically closed and the alarm quickly.
• The purification system is equipped with safe and reliable high-voltage grounding and lightning protection measures.

Scope of application

It has extensive deodorization and oxidation degradation of malodorous gases, such as hydrogen sulfide, ammonia, methylthiol, etc. The equipment can be applied to cigarette factory, rubber factory, coating factory, ink factory, printing plant, garbage transfer station, sewage treatment plant, tannery, tannery, paper pulp plant, meat processing plant, slaughterhouse and other industry odor treatment.