activated carbon is a kind of very small granular has a large surface area, and more tiny holes in the granular - capillary. The capillary has very strong adsorption capacity, due to the granular surface area is large, so a good contact with with gas (impurities). When these gases (impurities) encounter capillary by adsorption, purification effect. Activated carbon surface area of the study is very important, only the BET specific surface area detecting data of active carbon method detected result is reliable, domestic at present there are many instruments can only make direct comparison method of detection,
In domestic has been eliminated. Specific surface area test unified the multi-point BET method at home and abroad, specific surface area measurement standards are developed at home and abroad is based on BET test method, please see our national standard (GB/T 19587-2004) - gas adsorption BET principle of solid material specific surface area measurement methods. Specific surface area testing is actually the more time-consuming jobs, as the adsorption capacity of sample is different, some sample testing may need to spend the whole dayTime, if the test process is not fully automated, the tester can not leave at any time, and should be highly focused, observe the dashboard, control the knob, a little careless will lead to the failure of the test process, which will waste a lot of valuable time of the tester.High-quality granular activated carbon must have good adsorption performance and strength.activated charcoal pellets wholesale
Like powdery activated carbon, the adsorption performance of granular activated carbon depends largely on the characteristics of pore structure. The adsorption performance index can be analyzed and characterized by different methods, such as the decolorization performance of activated carbon expressed by methylene blue. Other performance indexes include iodine adsorption value, caramel decolorization rate, etc.
The pore structure characteristics and specific surface area of activated carbon are usually obtained by measuring nitrogen adsorption isotherm at low temperature with adsorption apparatus.
For the gas phase adsorption, the size of the gas molecules is usually less than 1. ONM, the use of microporous activated carbon;The products of these activated carbon plants can be roughly divided into three categories:
One is the use of low temperature coking (blue carbon plant) by-product of small "coke slag", directly into the Slip activation furnace for steam activation, the production of iodine value of 500 to 700mg/g, ash content is not higher than 8%, strength of only 65 to 80%, bulk density of 350-380g /L granular carbon, Sell to other professional activated carbon factory or ask business processing into powdered activated carbon products;https://www.wyactivatedcarbon.com/
One is to take the extrusion molding T art production of cylindrical activated carbon. Shenfu coal is grinded into powder, and an appropriate amount of high temperature coal tar is added as binder. After being mixed and squeezed, extruders are extrudated in the extruder. After drying, converter carbonization and Slipp furnace activation are carried out to finally produce columnar activated carbon with iodine value of 950-1050mg /g, strength not less than 88%, bulk density 365-420g /L and ash content not higher than 12%. The carbon can be used as a water treatment agent or a gas phase adsorbent, the latter is more suitable; The other is to adopt a similar process to produce desulfurization and denitration active coke. Shenfu coal and auxiliary coal are mixed and ground, kneading and extrusion forming with high temperature tar are added, and then the carbonization and activation treatment are carried out through the process. The cylindrical semi-coke with iodine value of 400-500mg /g, mechanical wear-resisting strength of more than 99%, crushing strength of not less than 40kgf/cm2, bulk density of 550-700g /L, ash content of not more than 20% is prepared.
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Activated carbon why pore absorption capacity so strong Dingxinda global quality activated carbon supplier
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