Introduction to photocatalyst production technology and fully automatic filling equipment

Introduction to photocatalyst production technology and fully automatic filling equipment
Wuhan Jieruishi Electromechanical Co., Ltd. is a professional manufacturer of aerosol filling equipment and various water treatment equipment. The company has more than 20 years of production practice experience and absorbs advanced technologies from home and abroad to continuously improve its products, enjoying a high reputation among users. Today, the editor will give you a detailed explanationIntroduction to photocatalyst production technology and fully automatic filling equipment
1Introduction to Photocatalyst Production Technology

Photocatalyst technology was discovered by Professor Kenichi Honda and graduate student Akira Fujishima at the University of Tokyo in 1967. They accidentally discovered that under ultraviolet radiation, titanium dioxide electrodes could decompose water into hydrogen and oxygen. In 1972, a paper on the photocatalytic effect was co published in the British journal Science, giving rise to photocatalytic technology.

The process of nanomaterials converting light energy into chemical energy under the irradiation of light, promoting the synthesis or degradation of organic matter, is called photocatalytic technology. This process is also called photocatalysis, so photocatalytic technology is also called photocatalytic technology.

Principle of Photocatalyst Technology

Under light irradiation, the valence band electrons of nano photocatalysts are excited to the conduction band, forming electrons and holes, which react with O2 and H2O adsorbed on their surfaces to generate superoxide anion radicals, O2- and hydroxyl radicals - OH. These radicals have strong oxidative decomposition ability and can break down C-C bonds, C-H bonds, C-N bonds, C-O bonds, O-H bonds, and N-H bonds in organic matter, decomposing organic matter into carbon dioxide and water; Simultaneously destroying the cell membrane of bacteria and solidifying virus proteins, altering the living environment of bacteria and viruses to kill them.

Introduction to production methods of photocatalysts

The main component of photocatalytic liquid is nano titanium dioxide, and the methods for preparing titanium dioxide include:

Precipitation method, sol gel method, W/O micro lotion method, gas phase reaction method

Uniform precipitation methodPreparation of intermediate product in titanium dioxide by H2SO4 method - titanium solution as raw material, with addition of rutile titanium dioxide seeds as promoter, sodium dodecyl sulfonate surfactant and urea as precipitant, to prepare nano rutile titanium dioxide molecules.

sol-gel methodUnlike the uniform precipitation method, titanium alkoxide Ti (OR) 4 (R=- C2H5, - C3H7, - C4H9) is generally used as the main raw material for nano titanium dioxide. The main steps are as follows: titanium alkoxide is dissolved in the solvent to form a homogeneous solution, so as to ensure that the hydrolysis reaction of titanium alkoxide is carried out on a molecular uniform hydrolysis plane. Because the solubility of titanium alkoxide in water is not large, small alcohol (ethanol, propanol, butanol, etc.) is generally selected as the solvent. Titanium alkoxide and water undergo hydrolysis reaction, and at the same time water loss and alcohol loss polycondensation reaction occur. The products gather to form a sol. After aging, the sol forms a three-dimensional network to form a gel. Dry the gel to remove residual water, organic groups, organic sol and water, to obtain nano titanium dioxide powder.

When anhydrous ethanol is used as a solvent to prepare nano TiO2, according to current research results, the typical reagent ratio is:

Ti (OC4H9)4：C2H5OH：H2O = 4：16：1

This process has a long production cycle, low yield, and uses a large amount of organic compounds such as anhydrous ethanol during the production process, making it unsuitable for producing pure inorganic photocatalysts.

Steam condensation methodBy using high-frequency plasma technology to heat industrial crude titanium dioxide, it can be vaporized and evaporated, and then rapidly cooled to obtain nanoscale titanium dioxide.

Gas-phase oxidation methodHigh purity TiCl4 is oxidized at high temperature to prepare titanium dioxide. The reaction temperature, residence time, and cooling rate all affect the particle morphology of titanium dioxide obtained by gas-phase oxidation method. In the study, it was found that titanium dioxide increases with the prolongation of residence time and the increase of reaction temperature, and the content of rutile titanium dioxide increases with the prolongation of residence time. When the reaction temperature reaches 1300 ℃, the content of rutile titanium dioxide increases. This production process method consumes a lot of energy, is highly corrosive to equipment, requires a large investment, and has a complex equipment structure. The materials used require high temperature resistance and corrosion resistance.

Tick 4 (g) + or 2 (g) —— > TiO 2 (g) + 2 Cl 2 (g)

n TiO2(g) ——> n TiO2(s)

Gas-phase hydrolysis methodGas phase hydrolysis method, also known as aerosol method, can use TiCl4 as raw material or Ti (OR) as raw material, which contains about 70% rutile type and 30% rutile type, with an average particle size of 30 nanometers and a specific surface area of 50 square meters per gram. Gas phase hydrolysis method does not directly use steam gas hydrolysis, but relies on steam gas hydrolysis produced by hydrogen oxygen flame combustion, with a reaction temperature of over 1800 ℃. During the reaction, the particle size and crystal structure of titanium dioxide can be controlled by adjusting parameters such as temperature, material ratio, flow rate, and reaction time. However, the nano titanium dioxide produced by high-temperature hydrolysis of high-purity TiCl4 in a hydrogen flame is difficult to control the reaction temperature and pressure, and requires a large investment and complex process.

The benefits of photocatalytic technology for daily life

air purification

Toxic substances such as formaldehyde, benzene derivatives, volatile organic compounds, ammonia, sulfur dioxide, carbon monoxide, nitrogen oxides, and automobile exhaust that affect human health are decomposed into carbon dioxide and water through photocatalysis, thereby purifying the air.

Antibacterial and Antifungal

It has the ability to kill bacteria such as Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, and mold, while also decomposing harmful substances released by the bacteria.

Deodorization and deodorization

The odor of living environment is mostly organic matter, such as organic solvents in paint, nitrogen-containing organic gases in spoiled water, cigarette odor, toilet odor, animal odor, etc. Organic matter has carbon bases that are easily reacted with nano photocatalysts, thereby decomposing into pollution-free CO2 and H2O.

Anti fouling and self-cleaning

The dirt on the surface of an object is mostly composed of oily pollutants. Oils and fats are also organic substances, and based on the mechanism of photocatalysis, they can decompose and peel off from the surface of objects.

Hydrophilic anti fog

The contact angle between the surface of titanium dioxide photocatalyst and water droplets is almost zero degrees, so objects coated with titanium dioxide photocatalyst have hydrophilic and anti fog functions.

Hydrophilicity diagram of photocatalyst

water purification

Purifying harmful substances in water.

The Development of Photocatalytic Industry at Home and Abroad

Japan is a leading country in photocatalyst technology, and in recent years has reached a practical level in many aspects such as anti fouling, antibacterial, hydrophilic materials, water treatment, biodegradable plastics, and environmental protection, forming a considerable scale of industry. For example, TOTO in Japan has launched photocatalyst self-cleaning antibacterial ceramic sanitary ware, NISSAN、 Toyota cars use photocatalyst anti fog rearview mirrors, etc. By 2005, the market size of photocatalysts and related products in Japan will reach $12 billion. The potential of the future world market can reach 100 billion US dollars, forming a brand new industry.

In recent years, due to the wide range of applications and profound impact of photocatalysts in environmental purification, it has been called the light purification revolution. According to experts' predictions, the domestic photocatalyst market will reach 500 million yuan in two years.

Photocatalyst production technology is an aerosol technology that uses specialized equipment to complete its production process. The production process is as follows: raw material production - raw material filling - valve sealing - propellant gas filling - nozzle fastening - cap fastening - coding - packaging and delivery.
IIIntroduction to Fully Automatic Filling Equipment

Introduction to small fully automatic production and filling equipment for photocatalysts:

Equipment configuration: The equipment investment ranges from 20000 to 270000 yuan.

The production and filling equipment for photocatalysts, also known as aerosol filling machinery, is divided into experimental equipment, semi-automatic equipment, and fully automatic equipment. Below, Jieruishi editor will introduce you to small semi-automatic equipment, as follows:

The machine has been improved based on the 1600A model, consisting of a liquid filling machine, an automatic valve closing machine, a sealing machine, and a propellant inflation machine. The linear screw bottle pushing system replaces the original transmission, and the equipment can choose between jog and automatic modes during operation, which is flexible and efficient. Can be equipped with bottle sorting machine, nozzle press machine, capping machine, inkjet printer and packaging workbench. At present, the aerosol industry has entered a period of rapid growth, and aerosol products are constantly being introduced. The new type of aerosol, which is filled with propellant after being vacuumed in a can, is more popular in the market and can be customized with vacuum pumping systems based on samples. The machine has been widely used in daily chemical, automotive supplies, sanitation, industry and construction, food and medicine and other related industries, such as moisturizing spray, surface wax, chemical cleaning agent, air freshener, self spray paint, cartridge stove fire pot gas, alpine tourist cans, and other aerosol products filling production.

detail drawing

Technical Specifications:

Production speed: 800-1800cans/hour

Liquid filling volume: 10-1000ml

Gas filling volume: 10-750ml

Repeated filling accuracy: ± 1%

Applicable aerosol can diameter: 35-65mm

Applicable aerosol can height: 70-330mm

Valve: 25.4mm (1 inch)

Gas source: 0.75-0.9Mpa

Gas consumption: 1.3m ³/min

Wuhan Jieruishi Electromechanical Co., Ltd. has a complete set of production equipment and technology. We will provide a complete set of design solutions free of charge according to the actual requirements of customers for reference and selection, so that you can start production worry free. In the chemical industry, generally speaking, equipment providers do not care about technology. Once there is a product quality problem, the technical department will say there is a problem with the equipment, and the equipment manufacturer will say there is a problem with the technology. And now some technical departments do not come to the factory to make products and require learning from the manufacturer. I did well in my studies, but when I returned home, I couldn't do well. This has caused many chemical product manufacturers to take many detours when they first start production. Jieruishi deeply abhors this irresponsible social phenomenon! For 20 years, Jieruishi has been providing integrated services to a wide range of customers, making the production process easy and avoiding many detours, with a success rate of up to 100%. All colleagues of Jieruishi are here to work with you. You are welcome to call us for consultation and conduct on-site inspections.

Related products:

Photocatalyst production equipment, filling equipment

Jieruishi adheres to the concept of "precision technology, excellent manufacturing, and high-quality service" to provide customers with satisfactory pre-sales, in sales, and after-sales services.

1、 Provide professional technical consulting services before sales, offer technical solutions, and assist customers in making reasonable selections.

2、 Resolve training issues related to equipment production and assist customers in correctly using and maintaining equipment.

3、 Provide lifelong maintenance services and technical support for customers' long-term use of equipment.

4、 By customizing professional production equipment, we can improve the accuracy of raw material filling and packaging quality issues

5、 Professional after-sales team, 24-hour service hotline, just one phone call, quick response, timely resolution of deteriorating problems.

Delivery Method：

□ Logistics transportation agency. The first party entrusts the second party to handle the shipment of goods to domestic logistics points, and the transportation and insurance premiums shall be borne by the second party.

All equipment will be shipped through Debang Logistics, a large logistics company with guaranteed safety, and usually takes 3-4 working days to arrive.

□ Self pickup by Party A

Packaging Instructions：

□ Export packaging

□ Wooden crate (moisture-proof and vibration proof)

□ Packaging material recycling

Bare machine without packaging