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光氧催化废气净化器用紫外线灯的技术处理

来源:http://www.educneves.com/   发布时间:2019-01-16 14:30:31
紫外线是电磁波谱中波长从100nm(纳米)到400nm辐射的总称,其间波长100nm到200nm的为真空紫外线(UV-D),波长200nm到280nm为短波紫外线(UV-C),波长280nm到315nm的为中波紫外线(UV-B),波长315nm到400nm的为长波紫外线(UV-A)。紫外线的波长与能量成反比。波长越长,穿透皮肤或空气能力越强。波长越短,能量越强,越容易导致皮肤病变。UV-D无法在空气中有效传达,而波长较短的UV-C则简直被臭氧层吸收,故自然界太阳光中的紫外线,首要以UV-A和UV-B为主,其间UV-A约占98.1%,UV-B占1.1%。
Ultraviolet radiation is the general term of electromagnetic spectrum, whose wavelength ranges from 100 nm (nanometer) to 400 nm. The wavelength ranges from 100 to 200 nm are vacuum ultraviolet radiation (UV-D), from 200 to 280 nm are short-wave ultraviolet radiation (UV-C), from 280 to 315 nm are medium-wave ultraviolet radiation (UV-B), and from 315 to 400 nm are long-wave ultraviolet radiation (UV-A). The wavelength of ultraviolet radiation is inversely proportional to energy. The longer the wavelength, the stronger the ability to penetrate the skin or air. The shorter the wavelength is, the stronger the energy is, and the more likely it is to cause skin lesions. UV-D can not be effectively transmitted in the air, while the shorter wavelength of UV-C is almost absorbed by the ozone layer. Therefore, in the natural sunlight, UV-A and UV-B are the main types of ultraviolet radiation, in which UV-A accounts for 98.1% and UV-B accounts for 1.1%.
多说几句,UV-A可穿透皮肤表皮到达真皮,并对皮肤的表皮黑色素发作作用,然后引起皮肤黑色素沉着,使皮肤变黑。而UV-B简直无法穿透皮肤表皮,少数照耀皮肤会促进血液循环,生成维生素D3,有保健作用,发射UV-B波段的紫外线灯也俗称保健灯,但当能量较高的UV-B长时间作用于皮肤时,可发作光照性皮炎,皮肤上出现红斑、痒、水疱、水肿等,而紫外线过量照耀,还可引起皮肤癌。
Say a few more words, UV-A can penetrate the skin epidermis to reach the dermis, and the skin epidermis melanin attack, and then cause skin melanin calm, make the skin black. Ultraviolet-B can hardly penetrate the skin epidermis. A few irradiation of skin can promote blood circulation and produce vitamin D3. It has health function. Ultraviolet lamp emitted in UV-B band is also commonly called health lamp. But when high-energy UV-B acts on the skin for a long time, it can cause photodermatitis, erythema, itching, blisters, edema and so on. Excessive irradiation of ultraviolet rays can also cause skin damage. Skin cancer.
在线正规赌博,光氧催化设备
每天适量晒晒太阳,能弥补钙质,对人体是有益处的,一般一天晒15分钟就足够了,假如被紫外线过多辐射的话,就会危害人体的皮肤。除了晒黑晒伤皮肤,紫外线还会加快皮肤老化。短波紫外线灯使用汞原子特性在气体放电时把汞蒸气激起放射出254nm的UV-C和185nm的UV-D波长的紫外线,UV-A和和UV-B是254nm的UV-C照耀对应的荧光粉宣布的紫外线,趁便提一下,短波UV-C目前被广泛用于杀菌消毒功用产品,它放射的紫外线能量较大,假如没有防护办法,极易对人体形成巨大损伤。假如暴露的肌肤被这类紫外线灯照耀,轻者会出现红肿、疼痒、脱屑;重者甚至会引发癌变、皮肤肿瘤等。同时,它也是眼睛的“隐形杀手”,会引起结膜、角膜发炎,长时间照耀可能会导致白内障。
A moderate amount of sunshine every day can make up for calcium, which is beneficial to the human body. Generally, 15 minutes of sunshine a day is enough. If it is overexposed to ultraviolet radiation, it will endanger the human skin. In addition to sunburn, ultraviolet radiation also accelerates skin aging. Short-wave ultraviolet lamp uses mercury atom characteristics to stimulate mercury vapor to emit 254 nm UV-C and 185 nm UV-D wavelength ultraviolet, UV-A and UV-B corresponding to 254 nm UV-C irradiation of fluorescent powder announced ultraviolet, while mentioning, short-wave UV-C is currently widely used in disinfection products, it radiates a large amount of ultraviolet energy, if there is no protection method, polar. It is easy to cause great damage to human body. If exposed skin is illuminated by this kind of ultraviolet lamp, light people will appear redness, itching, desquamation; heavy people will even cause canceration, skin tumors and so on. At the same time, it is also the "invisible killer" of the eyes, can cause conjunctivitis, corneal inflammation, long-term exposure may lead to cataracts.
再来说一下废气部分
Let's talk about the exhaust part.
VOC(挥发性有机物)首要包含苯、甲苯、二甲苯、苯乙烯、三氯乙烯、三氯甲烷、三氯乙烷、二异氰酸酯(TDI)、二异氰甲苯酯等和挥发性恶臭气体如不饱满烃(如丁二烯、苯乙烯)、氮化物(如氨、甲基胺、粪臭素)、硫化物(如硫化氢、硫化甲基)、氯烃(如氯仿)、含氧烃(如丙酮)、植物精油(如樟脑油)等化合物。
VOC (Volatile Organic Compounds) mainly includes benzene, toluene, xylene, styrene, trichloroethylene, trichloromethane, trichloroethane, diisocyanate (TDI), diisocyanate and other volatile odor gases such as unsaturated hydrocarbons (such as butadiene, styrene), nitrides (such as ammonia, methylamine, feces), sulfides (such as hydrogen sulfide, methyl sulfide), chlorohydrocarbons (such as butadiene, styrene). Compounds such as chloroform, oxyhydrocarbons (such as acetone), essential oils (such as camphor oil) and so on.
恶臭污染物质大多是气相污染物,首要由碳、氢、氧、氮、硫、卤素等元素构成。就化学结构而言,臭味物质分子多因具剩下电子,而有影响人类嗅觉的特性。
Odor pollutants are mostly gaseous pollutants, mainly composed of carbon, hydrogen, oxygen, nitrogen, sulfur, halogen and other elements. As far as chemical structure is concerned, odor molecules are mostly characterized by residual electrons, which affect human olfaction.
废气处理技能目前分为物理、化学、生物等三大类,一般可用单一技能或两种以上技能组合来完结单一臭气处理工作。常用的物理法是活性碳吸附或酸碱水洗喷淋,化学法是化学洗刷、焚化,生物规律包含生物洗刷、植物液喷洒、生物滴滤、生物滤床等,而在物理法除臭技能上,又研宣布了等离子体法除臭。
Exhaust gas treatment skills are currently divided into physical, chemical, biological and other three categories, generally using a single skill or combination of more than two skills to complete a single odor treatment work. The common physical methods are activated carbon adsorption or acid-alkali water washing and spraying. The chemical methods are chemical washing and incineration. The biological laws include biological washing, plant liquid spraying, biological trickling filtration, biological filter bed and so on.
而采用254nm波长+185nm波长双波段高效紫外线灯来处理废气在近两年由国外传至国内,目前在国内也得到广泛应用。实质一是应用了紫外线灯UVD185纳米波段和O2结合产生的O3臭氧来氧化复原反响废气,二是使用185纳米短波紫外线的高能量来裂解有机废气,三是使用254纳米紫外线照耀涂有TIO2的前言产生-OH来氧化有机废气。
In the past two years, the use of 254 nm wavelength + 185 nm wavelength dual-band high-efficiency ultraviolet lamp to treat waste gas has been transmitted from abroad to China, and has been widely used in China. In essence, the ozone generated by the combination of ultraviolet lamp UVD185 nano-band and O2 is used to oxidize and recover the reacting exhaust gas, the high energy of 185 nano-short-wave ultraviolet is used to crack the organic exhaust gas, and the organic exhaust gas is oxidized by -OH produced by the preamble of 254 nano-ultraviolet irradiation coated with TIO 2.
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