Traditional Culture Encyclopedia - Traditional stories - Precautions for activated carbon
Precautions for activated carbon
1. Transportation, loading and unloading: During transportation, activated carbon should not be dragged by iron hooks, prevented from mixing with hard materials, not strongly vibrated, rubbed, stepped on, smashed, and forbidden to be thrown, and should be lightly loaded and unloaded in order to minimize the fragmentation of charcoal particles, which may affect the use.
2, storage: should be stored in a cool and dry place, to prevent rupture of internal and external bags, to prevent moisture and adsorption of other substances in the air, affecting the use of the effect. It is strictly prohibited to mix with toxic and harmful gases or volatile substances, and stored away from sources of pollution.
3. Flooding is strictly prohibited: activated carbon belongs to porous adsorbent substances, so it should be absolutely prevented from flooding in the process of transportation, storage and use, because after flooding, the water fills up the activated pores and reduces the direct contact between the specific surface of activated carbon and the gas, which will seriously affect the use effect.
4. Prevent tar-like substances: In the process of use, tar-like sticky substances should be prohibited from entering the activated carbon bed, so as not to block the pores of the activated carbon or cover the activated carbon surface, so that the gas can't be contacted with the activated carbon surface and lose the application effect. If the gas contains such substances, they should be removed before the gas enters the bed of the activated carbon (it is better to have a de-coking equipment) in order to achieve a good application effect.
5. Fire prevention: When the activated carbon is stored or transported, prevent it from direct contact with fire source to prevent it from catching fire. When regenerating the activated carbon, avoid entering oxygen and regenerate thoroughly, after regeneration, it must be cooled down to below 800℃ with steam, otherwise the temperature is high, and when it meets oxygen, the activated carbon will combust spontaneously.
6. Use: When filling, sieve out the debris and dust generated by transportation. Then spread evenly in layers, not directly from the feed hole, so as not to make the size of the particles loaded unevenly, and ultimately cause gas bias flow, affecting the use of the effect. At the end of loading, before driving, the air should be blown out to blow out the dust adhering to the surface of the activated carbon, so as to avoid affecting the normal production by bringing the dust into the back section after driving.
7, safety needs to know: wet activated carbon needs to remove oxygen from the air, the consumption of oxygen in the safe closed container will cause a toxic environment, if the workers into the container containing activated carbon to appropriate sampling or low oxygen space operation, should comply with the relevant national standards and codes of practice.
The key factors affecting the service life of activated carbon are: the total amount of harmful substances in the environment and the frequency of desorption. Since the mass of harmful gases adsorbed by activated carbon can be close to or even reach its own mass, the mass of harmful gases in the air of an ordinary household space is much smaller than the amount of activated carbon used. Therefore, as long as the activated carbon is often placed in the sun burst, can increase the life of the activated carbon, so that it can be used for a longer period of time.
Worldwide recognition: activated carbon for the "universal adsorbent"
Expert tip: activated carbon adsorption method to remove indoor pollution is the most widely used, the most mature, the safest, the most reliable effect, the absorption of the largest variety of substances in a method. Activated carbon as an excellent physical and chemical adsorbent, more and more attention.
Efficient environmental protection activated carbon package can adsorb formaldehyde, ammonia, benzene, xylene, radon and other indoor all harmful gas molecules in the air, quickly eliminate the decoration of the odor, uniformly regulate the humidity of the space, for the living room, furniture closet, bookcases, shoe cabinets, shoes, shoes, refrigerators, bathrooms, flooring, fish tanks, automobiles, air conditioning, computers, offices, hotels and entertainment venues, have a very good effect, it is a formaldehyde It is the nemesis of formaldehyde and the expert of killing poison.
Iodine value: iodine value is a performance difference of activated carbon, fruit shells, bamboo charcoal, coal-based iodine value are in the hundreds, raw material iodine value of activated carbon from 800,850,900,950,1000,1100mg/g and so on a variety of adsorption capacity is also different! The cost price is also different! The same iodine value of the activated carbon is only the best effect of coconut shell.
Weighing with the hand: it has been described above that under the same weight packaging, the performance of the activated carbon is much larger than the volume of poor quality activated carbon.
Look at the bubbles: put a small amount of activated carbon into the water, due to the penetration of water, the water will be gradually immersed into the pore structure of the activated carbon, forcing the air in the pores to be discharged, which will produce a series of extremely small bubbles, pulling out a small bubble line in the water, and at the same time, will emit the sound of bubbles, which is very interesting. The more intense this phenomenon occurs and the longer it lasts, the better the adsorption of the activated carbon.
Look at the decolorization ability: another manifestation of the adsorption ability of activated carbon is the decolorization ability, activated carbon has the magical ability to turn the colored liquid into light or colorless, which is actually caused by the adsorption of activated carbon to the pigment molecules in the colored liquid. Because of this characteristic, activated charcoal is widely used in the sugar industry in the production process of brown sugar to white sugar. Take two transparent cups, put pure water in one cup, and then put a drop of red ink (here you can use any kind of pigment that is easy to observe but does not change the nature of the water can be used, for example, blue ink, printer color ink, but can not use the ink and carbon ink), mix well and then pour half of the colored water into the other cup to stay as a comparison sample. Activated carbon into the colored water, the number should reach half of the water or more, so that the effect will be more obvious, after 10-20 minutes of resting with the comparison of water samples for comparison, under the same conditions, the stronger the effect of decoloration indicates that the activated carbon adsorption is better.
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