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The principle of photocatalytic oxidation for deodorization
The photocatalytic oxidation method uses catalysts to accelerate the rate of liquid-phase oxidation and decomposition of odors.The photocatalytic oxidation method using neodymium dioxide as a catalyst has a good removal effect on odor. In the past 20 years of research, it has been found that photocatalytic technology directly uses 02 in the air as an oxidant, under mild reaction conditions (room temperature, normal pressure), and has the ability to purify almost all pollutants. Common photocatalysts are mostly metal oxides or sulfides, such as TiC) 2, ZnO, ZnS, CdS, and PbS.However, due to photo corrosion and chemical corrosion, TiC) 2 * ZnO has better practicality, with Ding 102 being the most widely used. TiO2 has the best comprehensive performance, with high photocatalytic activity (higher than ZnO), stable chemical properties, strong redox properties, insoluble, non-toxic, and low cost. It is the most widely studied and applied single compound photocatalyst. The essence of semiconductor photocatalysis is the redox reaction in photoelectric conversion. According to the electronic structure of semiconductors, when they absorb a photon with energy not less than their bandgap energy (? G), the electron (e2) will transition from the full valence band to the empty conduction band, leaving a positively charged hole (h+) in the valence band. Valence band holes have strong oxidizing properties, while conduction band electrons have strong reducing properties. They can directly interact with reactants and also react with other electron donors and acceptors adsorbed on the catalyst. For example, holes can oxidize H20, and electrons can reduce 02 in the air, generating H2() 2 The OH group and Hoy group have strong oxidation ability and can effectively oxidize odor pollutants, ultimately decomposing them into inorganic small molecules such as CO2 and H2O, achieving the goal of eliminating odor. Date：2024-01-12 -
Knowledge of Installation and Maintenance of Waste Gas Treatment Tower
The exhaust gas treatment tower is a device that completes the absorption operation. It can be divided into three categories based on the shape of gas-liquid phase touch. The first type is plate tower, bubbling absorption tower, and mixing bubbling absorption tower where gas is dispersed in the liquid phase in the shape of bubbles; The second type is the ejector, Venturi tube and spray tower with liquid dispersed in the gas phase in the form of droplets; The third type is packed absorption towers and falling film absorption towers where the liquid moves in a film like manner and touches the gas phase. The activity method of gas-liquid two-phase flow inside the tower can be either counter flow or parallel flow. Generally, countercurrent operation is used, and the absorbent participates in top-down activity at the top of the tower, touching the gas moving from bottom to top. The liquid that absorbs the absorbent is discharged from the bottom of the tower, and the purified gas is discharged from the top of the tower.In the era of increasingly developed industry, exhaust gas treatment towers play a crucial role. They can treat industrial exhaust gases and have a crucial effect on air purification. If there were no exhaust gas treatment towers, it's hard to imagine what a mess industry would become. So, how much do you know about the installation and maintenance of waste gas treatment towers?Users carry out concrete foundation construction based on foundation data; The equipment should be installed on a concrete foundation that is more than 100mm above the ground; Supporting pipelines, valves, etc. should have independent support and cannot be fixed on tower equipment; During installation, attention should be paid to maintaining the equipment and avoiding damage to the body and exposed components. When connecting the tower flange with the external flange, the correct tightening method should be selected, and excessive force should not be applied to avoid cracking of the flange. Steel gaskets shall not be used for flange gaskets, and corrosion-resistant and oil resistant rubber gaskets can be used; After the equipment installation is completed, water is used for cyclic debugging, and it operates normally without any signs of running, emitting, dripping, leaking, or clogging.In addition, to ensure the normal operation of the tower equipment, a dedicated person must be responsible for handling it. It is necessary to frequently check whether the fan and water pump are running normally, whether the spray pipe and air pipe are unobstructed, whether the liquid level in the storage tank is normal, whether the water replenishment float switch is normal, whether the gas-liquid concentration is within the regular range, etc. If problems are found, they should be dealt with in a timely manner.Understanding the scientific installation and maintenance measures of waste gas treatment towers is beneficial without any harm, and can extend their lifespan and improve their functionality.The Three Ladder Clean Equipment is a professional manufacturer of environmental protection equipment such as waste gas treatment equipment, photocatalytic oxidation equipment, rubber waste gas treatment, foul odor waste gas treatment, clean sheds, and environmental protection equipment. It provides customers with a long-term safety guarantee and technical support, based on data and facts, all in-depth analysis of specific requirements, tailored to customers, providing professional proposals, detailed operational protection explanations, and more Evaluate operating costs and provide comprehensive services to ensure maximum benefits for customers. We are your trusted long-term partner. Date：2024-01-12 -
Application and Use of Deodorization Tower Scheme for Odor Waste Gas Treatment
The environmental deodorization tower for the treatment of foul odor waste gas is specially designed to treat the waste gas discharged from natural rubber drying. After treatment, it will emit colorless gas and all comply with the national waste gas emission standards.The deodorization tower scheme for treating odorous waste gas can be applied to:All kinds of odor and odor gases produced in sewage treatment station, garbage treatment plant, garbage transfer station, poultry farm, pump station, municipal administration, cigarette factory, essence factory, dung treatment, meat processing plant, slaughterhouse and other fields.Toxic gases such as formaldehyde, benzene, ammonia, as well as microorganisms and suspended particulate matter produced in hospitals, restaurants, hotels, entertainment venues, public places, laboratories, etc. Date：2024-01-12 -
Advantages of photocatalytic oxidation method for treating waste gas
Photocatalytic oxidation technology is an environmentally friendly green water treatment technique that can completely oxidize and degrade organic pollutants in wastewater. This skill involves using a central product that is easy to absorb photon energy to first form an excited state, and then inducing the oxidation process of reactant molecules.Photocatalytic oxidation uses nano technology to composite multiple metal oxides, activated carbon, and adhesives into a composite photocatalyst. This composite photocatalyst preparation method is simple and has the characteristics of wide spectral response scale, high photoactivity, and fast response rate.1. Efficient deodorization: It can efficiently remove primary pollutants such as volatile organic compounds (VOCs), inorganic substances, hydrogen sulfide, ammonia, thiols, and various odors, with a deodorization power of over 99%.2. No need to add any substances: simply set up corresponding exhaust pipes and exhaust power to allow the odor gas to undergo deodorization, differentiation, and purification through this equipment, without adding any substances to participate in chemical reactions.3. Strong Habituality: Can be accustomed to the deodorization and purification treatment of high concentration, atmospheric volume, and different odorous gas substances, and can operate continuously 24 hours a day, ensuring stable and reliable operation.4. Low operating cost, only about 0.1 kWh of electricity is consumed for every 1000 cubic meters per hour of processing, and the equipment has extremely low wind resistance<30pa, which can save a lot of exhaust power energy consumption.5. The equipment has a small footprint, stable functions, and a long service life. 6. No secondary pollution occurs, achieving efficient disinfection and sterilization together. Date：2024-01-12 -
Overview of the functions of photocatalytic oxidation purification equipment
Principle of photocatalytic oxidation commodity technology:1、 This product uses a specially designed high-energy and high ozone UV ultraviolet beam to illuminate foul smelling gases, modifying the molecular chain structure of foul smelling gases such as ammonia, trimethylamine, hydrogen sulfide, methylthiol, methylthiol, dimethyl disulfide, carbon disulfide, styrene, sulfide H2S, VOC, benzene, toluene, and xylene, so that the molecular chains of organic or inorganic high molecular weight foul smelling compounds are illuminated by high-energy ultraviolet beams, Degradation and transformation into low molecular weight compounds such as CO2, H2O, etc.2、 Using high-energy and high ozone UV beams to differentiate oxygen molecules in the air into free oxygen, also known as reactive oxygen species. Due to the imbalance of positive and negative electrons carried by free oxygen, it needs to combine with oxygen molecules to generate ozone. UV+O2 → O -+O * (reactive oxygen species) O+O2 → O3 (ozone), as is well known, ozone has a strong oxidizing effect on organic matter, and has a quick and successful eradication effect on foul odors and other irritating odors.3、 After the foul smelling gas is input into the purification equipment through exhaust equipment, the purification equipment uses high-energy UV ultraviolet beams and ozone to synergistically differentiate and oxidize the foul smelling gas, causing it to degrade and transform into low molecular weight compounds, water, and carbon dioxide, which are then discharged outdoors through exhaust pipes.4、 Using high-energy UV beams to break down the molecular bonds of bacteria in foul smelling gases, damaging their nucleic acid (DNA), and then undergoing ozone oxidation to achieve complete deodorization and bacterial killing.Overview of the functions of photocatalytic oxidation equipment:1、 Efficient deodorization: It can efficiently remove major pollutants such as volatile organic compounds (VOCs), inorganic substances, hydrogen sulfide, ammonia, thiols, and various odors. The deodorization power can reach over 99.9%, and the deodorization effect greatly exceeds the national emission standards for odor pollutants.2、 No need to add any substances: just set up corresponding exhaust pipes and exhaust power to make the odor gas undergo deodorization, differentiation and purification through this equipment, without adding any substances to participate in chemical reactions.3、 Strong adaptability: It can adapt to the deodorization and purification treatment of high concentration, atmospheric volume, and different odorous gas substances, and can operate continuously 24 hours a day, ensuring stable and reliable operation.4、 Low operating cost: This equipment has no mechanical action, no noise, and does not require special personnel to handle or maintain it regularly. It only needs to be checked regularly. The energy consumption of this equipment is low (only about 0.1 kWh of electricity is consumed for every 1000 cubic meters/hour of processing), and the wind resistance of the equipment is extremely low<30pa, which can save a lot of exhaust power energy consumption.5、 No need for pre-treatment: Odorous gases do not require special pre-treatment, such as heating, humidification, etc. The equipment can operate normally in operating environments with temperatures between -30o to 95o Celsius and humidity between 40% to 98%.6、 The equipment has a small footprint and a light weight: suitable for special conditions such as compact placement and narrow spaces. The equipment occupies an area of less than 1 square meter per 10000 m3/h of air volume.7、 Excellent imported material manufacturing: high fire and corrosion resistance, stable function, and long service life.8、 Environmentally friendly high-tech patented products: selected from the most advanced international technology concepts, developed through long-term repeated experiments by experts and our company's engineering and technical personnel, this high-tech environmental purification product with completely independent intellectual property rights. It can completely differentiate toxic and harmful substances in foul odor gases and achieve complete deodorization. The differentiated foul odor gases can completely achieve harmless emissions without secondary pollution, Together achieve the effect of efficient disinfection and sterilization. Date：2024-01-12 -
Knowledge of flue gas treatment for waste incineration power generation
Garbage incineration power generation refers to the work of using high-tech garbage incineration equipment to generate electricity in garbage incineration plants. However, the process of garbage incineration generates air pollution, which causes great harm to human health. Therefore, it is necessary to treat the air generated by garbage incineration technology. At present, the waste incineration power generation flue gas treatment technology is reliable, advanced, mature, and can provide the optimal flue gas treatment plan based on the treatment effect, achieving the goal of harmless to human health.1. What are the other emission indicators of waste incineration power plants? Compared to international standards, at what level?The biggest difference between domestic waste and foreign waste is that our waste is relatively wet. At present, the equipment is mature in technology, and the furnace temperature and flue gas emissions can be monitored in real time. That is to say, the data of various harmful emissions in the flue gas of incineration power plants can be seen by the Environmental Protection Bureau at all times, playing a supervisory role.All emission indicators in the flue gas can meet the requirements of the Notice on Further Strengthening the Management of Environmental Impact Assessment for Biomass Power Generation Projects issued by the National Environmental Protection Commission [2008] No. 82. The main project indicators can meet the requirements of this standard and also meet the standards of the European Union, which is very low and will not have an impact on the environment.The emission indicators of flue gas from incineration of garbage have reached the international level.2. What are the main components of smoke generated after garbage incineration?The main components of the flue gas after garbage incineration include dust, sulfur dioxide, carbon dioxide, nitrogen oxides, etc., as well as hydrogen fluoride, hydrogen chloride, furan, dioxins, etc. These harmful components will be treated and removed through advanced technological means, and the final emissions through the chimney are in accordance with the national environmental protection standard [2008] No. 82, with little impact on the environment.3. Will the smoke emitted from the chimney be toxic?After high-temperature combustion at temperatures ranging from 850 ℃ to 1100 ℃, some harmful gases can be decomposed, and then processed by a "semi dry method+activated carbon adsorption+bag dust removal" purification system. The harmful gases have been fully removed and can reach high standards. The dust (fly ash) adsorbed by harmful gases is treated as dangerous goods and strictly controlled. Finally, the gases discharged through the chimney are all up to standard, and the chimney height is generally 80 meters, Can be diffused in the atmosphere. Sometimes due to weather changes, white gas may be seen coming out of chimneys, which is just evaporated water vapor.4. Will the chimney emit ash outside?After high-performance special cloth bags are used to collect dust in the flue gas, there will be no floating ash phenomenon. Because the dust collection rate of bag dust removal can reach 99.99%, the dust is basically completely removed, so there will be no dust in the smoke discharged from the chimney. In addition, because it is not visible to the naked eye, there will be no floating ash phenomenon.5. How to control the production of NOx (nitrogen oxides)?The mechanism of NOx generation includes two aspects: firstly, the nitrogen content in garbage generates NOx during combustion, and secondly, the nitrogen content in the air oxidizes to produce NO2 at high temperatures. The most reasonable way to suppress NOx generation is to control the amount of NOx produced during combustion by limiting the amount of primary combustion air. Practice has proven that this is an effective method. Based on this principle, this project ensures that the NOx content (equivalent to NO2) in the flue gas is less than 400mg/Nm3 through furnace design and combustion control. Industry actual data shows that NOx control can be achieved through combustion control. The design reserves the location of SNCR (Denitration, i.e. removal of nitrogen oxides) device and spray inlet, which can greatly reduce NOx emissions and have no impact on the environment. Date：2024-01-12 -
What questions should be paid attention to in different situations of exhaust gas treatment
What issues should be paid attention to in the treatment of exhaust gases in different situations?1. Treatment of inert gases:Although inert gases are not dangerous, the accumulation of a large amount of inert gases can reduce the surrounding oxygen content, leading to suffocation.(1) Discharge in an appropriate outdoor location.(2) If the steel cylinder or instrument is indoors, an exhaust duct can be connected to slowly discharge it outdoors.2. Treatment of combustion gas:(1) Powder, petroleum, grease, and flammable substances adhered to container valves or utensils must be thoroughly removed before proceeding with the treatment of auxiliary gas.(2) It is strictly prohibited to handle combustion gases and combustible gases in the same area or nearby to prevent explosion accidents.(3) There should be no sources of ignition, combustibles, or explosives around the area where combustion supporting gases are being processed.3. Handling of combustible gases:(1) If the emission of combustible gases is large, it is advisable to choose a place with fewer people as much as possible, pay attention to prohibiting fires in the surrounding area, and prepare corresponding fire extinguishers, sand, and water.(2) When discharging combustible gases from steel cylinders, workers should stand on the side of the gas outlet to prevent gas spraying and injuring people.(3) When using the combustion method for treatment, a pressure reducing valve should be installed to control the speed of combustible gas and try to slowly release the gas, so that it can be fully burned in the combustion device.4. Treatment of toxic gases:(1) When handling toxic gases, workers must wear protective equipment such as gas masks and gloves. Personnel unrelated to the handling work are prohibited from entering the toxic gas processing area.(2) The absorbents and adsorbents used in the treatment of toxic gases should ensure their effectiveness before use. Date：2024-01-12 -
Comparison of photocatalytic oxidation and biological deodorization methods for treating waste gas
Comparison between photocatalytic oxidation and biological deodorization methods for treating waste gas:Biological deodorization method, also known as biological decomposition method, is the process of using circulating water flow to contain pollutants in foul smelling gases in water, and then cultivating microorganisms in a water culture bed to degrade the pollutants into low harmful substances. The deodorization efficiency can reach 70%, but due to the influence of microbial activity, the cultivated microorganisms can only treat one or several gases with similar properties. In order to improve treatment efficiency and stable operation, Frequent addition of chemicals, control of pH value, temperature, etc. is necessary, which results in relatively high operating costs and requires more manual labor. In addition, once the organism dies, it will require a longer period of re cultivation.The photocatalytic oxidation method uses high-energy UV rays to decompose and oxidize the molecular chains of odorous substances in the photodegradation purification equipment, change the material structure, and decompose and oxidize polymer pollutants into low-molecularly harmless substances. Its deodorization efficiency can reach 99%, and the deodorization effect greatly exceeds the national emission standard for odorous substances issued in 1993 (GB14554-93). It can process ammonia, hydrogen sulfide, methyl mercaptan, methyl sulfide, benzene, styrene, carbon disulfide, etc High concentration mixed gases such as trimethylamine and dimethyl disulfide have an internal light source that can be used for three years, and the equipment has a lifespan of more than ten years. The purification technology is reliable and very stable, and the purification equipment does not require daily maintenance. It can be used normally by simply connecting the power supply, with low operating costs and no secondary pollution. Scope of application: Deodorization and purification treatment of organic and inorganic odorous gases in food processing plants, meat processing plants, slaughterhouses, poultry feed farms, paper mills, sewage treatment plants, garbage transfer stations, and fecal treatment. Deodorization and purification treatment of organic and inorganic odorous gases in refineries, rubber factories, leather factories, printing factories, chemical factories, traditional Chinese and Western medicine factories, metal casting factories, plastic recycling factories, spray solvents, etc.Photocatalytic treatment of waste gas technology is a technology that Zhuo Cui Environmental Protection has been researching and practicing for many years, and is the first to introduce and use on a large scale in the field of industrial waste gas purification in China. A series of industrial photocatalytic organic waste gas purification devices formed through continuous improvement.The photocatalytic deodorization device Zhuo Cui Environmental Protection uses biological spraying for pretreatment, and then enters the photocatalytic purification device. Under the action of the catalyst, it is an environmental protection equipment that converts organic waste gas into CO2 and H2O at room temperature. At present, this device has been widely used by domestic and foreign users, and has achieved good purification effects. Date：2024-01-12 -
Characteristics of Activated Carbon Adsorption Tower Equipment
Activated carbon adsorption tower can adsorb and recover waste gases from organic solvents such as benzene, alcohol, ketone, ester, gasoline, etc. It is more suitable for the treatment of low air volume and high concentration waste gases. Therefore, it can be used in industries such as spraying, food processing, printed circuit boards, semiconductor manufacturing, chemical industry, electronics, leather industry, latex product industry, papermaking, etc Activated carbon adsorption equipment mainly utilizes porous solid adsorbent activated carbon to have adsorption effect, which can effectively remove organic pollutants and odors in industrial waste gas. It is widely used in the end treatment of industrial organic waste gas purification, with good purification effect. After the gas enters the absorption tower through the pipeline, a diffusion process occurs between two different phase interfaces. The diffusion ends, and the gas is sucked out by the fan and discharged.Activated carbon adsorption technology has been used for refining and decolorization in industries such as medicine, chemical industry, and food in China for many years. It began to be used for industrial wastewater treatment in the 1970s. The activated carbon adsorption method has gradually become one of the main methods for secondary or tertiary treatment of industrial wastewater. Organic waste gas activated carbon adsorption tower is widely used in furniture and wood industry, chemical coatings, metal surface treatment, spraying, painting, drying and other places that produce organic waste gas and odor. High quality adsorbed activated carbon is used as the adsorption medium, and organic waste gas is filtered and adsorbed through multiple layers of adsorption layers to achieve the purpose of purifying waste gas.Process (main technical) characteristics:It is divided into manual and automatic types, with a compact and integrated structure that is easy to install, operate, and maintain;◆ High filtration rate, large processing capacity, stable operating effect, and small equipment footprint;◆ The filter material has a large interception capacity, high porosity, friction resistance, and moderate specific gravityThe main considerations for choosing exhaust gas treatment are: air volume, gas temperature, installation height, temperature of the operating environment, and the defogging device in front of the air inlet must be properly treated.If the above is done correctly, then we can meet the emission standards and easily deal with environmental protection. Date：2024-01-12 -
Working principle of activated carbon adsorption tower
The activated carbon adsorption tower device mainly consists of an activated carbon layer and a support layer. Activated carbon has developed pores, a large specific surface area, and high adsorption capacity. It is precisely because of this characteristic of activated carbon that it is widely used in the deep treatment of water, such as domestic water supply, deep treatment of wastewater treatment in the later stage (purified water), etc.Dust containing gas is powered by a fan and enters the tower at either positive or negative pressure. Due to the presence of unbalanced and unsaturated molecular attraction or chemical forces on the surface of activated carbon solids, when the solid surface comes into contact with the gas, it can attract gas molecules, causing them to concentrate and remain on the solid surface. The pollutants are then adsorbed, and the exhaust gas enters the equipment's dust removal system after passing through the filter, purifying the gas and achieving high altitude emission standards.1. High adsorption efficiency, large adsorption capacity, and wide applicability2. Easy maintenance without technical requirements3. Large specific surface area and good selective adsorption4. Activated carbon has the characteristics of a wide range of sources and low price5. High adsorption efficiency and strong ability6. Easy to operate and safeAfter using activated carbon for a period of time, it adsorbs a large amount of adsorbate and gradually saturates, losing its working ability. In severe cases, it will penetrate the filter layer. Therefore, activated carbon should be regenerated or replaced. Date：2024-01-12
