供 莱芜木质柱状活性炭厂家

 莱芜活性炭厂家 莱芜活性炭供应 莱芜活性炭用途 莱芜活性炭种类

活性炭外观为黑色粉末状，在一般溶液下均不溶解。无臭无味，具有表面积大吸附力强、纯度高、滤速快、质量稳定，具有絮凝效应和助滤效应等特点。广泛适用于食品、医药、味精化工等产品的脱色、除杂精制。也可以用于水的净化处理。椰壳活性炭采用椰子壳为原料精制而成，外形为不定形颗粒，具有机械强度高，孔隙结构发达，比表面积大，吸附速度快，吸附容量高，易于再生，经久耐用等特点。主要用于食品、饮料、酒类、空气净化活性炭和高纯饮用水的除臭、去除水中重金属、除氯及液体脱色。并可广泛用于化学工业的溶剂回收和气体分离等。净化空气用活性炭　净化空气用的活性炭的微孔直径，必须是略大于有毒有害气体分子直径，才具备对有毒有害气体的吸附能力。影响空气净化活性炭使用寿命的关键因素：使用环境中有害物质的总量大小以及脱附的频率。由于活性炭吸附有害气体的质量可以接近甚至达到其本身的质量，而在普通家庭空间空气中，有害气体的质量远远小于活性炭的使用量。因此，只要经常将活性炭放置在太阳下爆晒，活性炭就可以相对来说长期使用。

按炭化物质分类，活性炭可分为：椰壳类活性炭、果壳类活性炭（包括果核壳活性炭、杏壳活性炭、核桃壳活性炭）、木质类活性炭、煤质类活性炭。按照外观分类，活性炭可分为：粉状活性炭、颗粒活性炭、不定型颗粒活性炭、圆柱形活性炭、球形活性炭、其他型的活性炭。按孔径分：大孔活性炭半径>20000nm、过渡孔活性炭半径150-20000nm、微孔活性炭半径<150nm。活性炭吸附能力很强，是把硬木、果壳、骨头等放在密闭的容器中烧成炭再增加其孔隙后制成的。防毒mj中用来过滤气体，工业上用来脱色、使溶液纯净，医药上用来吸收胃肠中的毒素、细菌或气体。

通常都认为应用活性炭没有安全问题，但实际没有绝对的安全，对活性炭应用中的安全不能掉以轻心，对活性炭的性质和不安全的可能性要有所认识。A. 关于着火1) 活性炭不列入危险品类，但是可燃的。着火后不会发生有焰燃烧，只是阴燃。2)活性炭不会自燃，在空气中可能会着火，与汽油、柴油等混合，可引起燃烧。3)活性炭燃烧时如果通风不足，会生成有毒的一氧化碳。 B、关于贮存1) 活性炭必须存放在尽可能防火的建筑内。2)活性炭不可与氧化剂混放3)贮放处禁止明火，火花和吸烟。

Where dost thou stand behind them all, my lover, hiding thyself in the shadows? They push thee and pass thee by on the dusty road, taking thee for naught. I wait here weary hours spreading my offerings for thee, while passers-by come and take my flowers, one by one, and my basket is nearly empty.
The morning time is past, and the noon. In the shade of evening my eyes are drowsy with sleep. Men going home glance at me and smile and fill me with shame. I sit like a beggar maid, drawing my skirt over my face, and when they ask me, what it is I want, I drop my eyes and answer them not.
Oh, how, indeed, could I tell them that for thee I wait, and that thou hast promised to come. How could I utter for shame that I keep for my dowry this poverty. Ah, I hug this pride in the secret of my heart.
I sit on the grass and gaze upon the sky and dream of the sudden splendour of thy coming---all the lights ablaze, golden pennons flying over thy car, and they at the roadside standing agape, when they see thee come down from thy seat to raise me from the dust, and set at thy side this ragged beggar girl a-tremble with shame and pride, like a creeper in a summer breeze.
But time glides on and still no sound of the wheels of thy chariot. Many a procession passes by with noise and shouts and glamour of glory. Is it only thou who wouldst stand in the shadow silent and behind them all? And only I who would wait and weep and wear out my heart in vain longing?​