I. U-shaped photolysis lamp tube
Lamp length: 40-2250 pixels
Lamp power: 80-300 watts
Wavelength:185nm+254nm
Ambient temperature: up to 90 degrees Celsius.
Average lamp life: 13000 hours.
B, linear photolysis lamp with ozone
Lamp length: 25-4000px
Lamp power: 50-600W W.
Wavelength:185nm+254nm
Ambient temperature: up to 90 degrees Celsius.
Average lamp life: 13000 hours.
C, liquid mercury photolysis lamp with ozone
Lamp length: 10-4000px
Lamp power: 5- 150 W
Wavelength:185nm+254nm
Ambient temperature: up to 50 degrees Celsius.
Average life of lamp: 10000 hours.
Two. Use of Junrui Photolysis Lamp
( 1)? Removing peculiar smell and purifying industrial waste gas
The light in 185nm band emitted by the photolysis lamp can decompose oxygen molecules in the air to produce ozone. Ozone has a strong oxidation effect, which degrades industrial waste gas into low molecular compounds, water and carbon dioxide, and has an immediate effect on removing industrial waste gas and other irritating odors.
At the same time, high-energy ultraviolet rays are used to decompose the molecular bonds of bacteria in malodorous gas, destroy the DNA of bacteria, and then ozone O3 is used for oxidation reaction, so as to completely achieve the purpose of deoxidation and sterilization.
(b) kitchen fume purification
Ultraviolet lamps that can generate ozone O3 are widely used in kitchen fume purification equipment, especially in restaurants, hotels and other large catering facilities. Ultraviolet light with the wavelength of 185nm will cool the oil molecules, produce trace amounts of powder, carbon dioxide and water, photooxidize the organic matter in the oil fume, and eliminate the peculiar smell in the flue.
After ultraviolet treatment, there is no oil residue in the oil fume exhaust pipeline, which can eliminate the fire hazard to the maximum extent.
Third, the history of development
Ultraviolet light was discovered in 180 1 year. Since 1877 British scientists published the experiment that ultraviolet radiation can kill Bacillus subtilis and budding bacteria, the bactericidal ability of ultraviolet radiation has been proved. It was proved in 190 1 year, which further clarified the wavelength characteristics of sterilization. According to the conclusion, the bactericidal characteristics have nothing to do with the kinds of bacteria, and the ultraviolet ray with the wavelength of 250~270NM has the strongest bactericidal effect. After more than 200 years of research, development and experiments, the use of ultraviolet rays has become very common.
Ultraviolet light is invisible light outside the ultraviolet spectrum and exists outside the ultraviolet end of the spectrum, so it is called ultraviolet light. It is also a kind of light wave, which is divided into three sections according to different wavelengths. A wave? B wave? C wave? Among them, the wavelength of C-band ultraviolet is between 240 and 260 nm, which is the most effective sterilization band. The wavelength of the strongest point in this band is 260NM.
Sunlight is the largest source of ultraviolet radiation, but after being separated by the ionosphere and ozone layer, what remains to reach the ground is mainly a wave? B wave that can kill bacteria, C wave is very small. In order to get enough ultraviolet rays conveniently and quickly, scientists invented an artificial ultraviolet radiation source: ultraviolet germicidal lamp. Can achieve the purpose of killing bacteria more effectively and intensively.
4. Comparison and application of mercury lamp and ordinary low-voltage ultraviolet germicidal lamp
When the ordinary low-pressure ultraviolet sterilization lamp tube works, the low-pressure mercury vapor in the tube will be activated to emit ultraviolet rays of 253.7nm and 185nm, and the ultraviolet rays of 253.7nm will be irradiated on the adjacent mercury atoms, resulting in * * * vibration absorption effect and further releasing the ultraviolet rays in the irradiated mercury atoms. With the accumulation of heat generated during lamp operation, the temperature in the tube will increase, resulting in the increase of mercury vapor pressure and mercury atom concentration in the tube. At the initial stage of temperature rise, the absorption effect of vibration will be enhanced, and the ultraviolet output of the lamp will increase. However, in the absence of amalgam, without good ventilation and cooling conditions, with the further increase of temperature and mercury vapor pressure in the tube, the collision between mercury atoms will be intensified, and the ultraviolet radiation at 253.7nm will be quickly suppressed. At this time, the ultraviolet output of the lamp shows a downward trend. Therefore, for ordinary ultraviolet lamps, in order to make the ultraviolet output strongest, there is an optimal mercury vapor pressure (generally 0.8~ 1Pa) in the tube, and the lamp can only achieve good ultraviolet output in such a narrow temperature range. For commonly used low-voltage ultraviolet lamps, the optimum working temperature is about 40℃. -From Foshan Junrui Photoelectric Technology Co., Ltd.