The experimental results show that the surface structure of the activated carbon material modified by FeSO changes: the specific surface area decreases, the surface oxygen content increases, the plane of the random layer graphite carbon net is destroyed to a certain extent, and the ammonia absorption capacity and benzene absorption performance of the sample are greatly enhanced.He ChunHong et al. [reported the research progress of supporting activated carbon materials in the removal of SO; the removal ability of SO was significantly enhanced after supporting Co, Ni, Mg, and V compounds, which was due to the formation of Co(OH)2, Ni(OH)2, Mg (OH)2, and V,0 microcrystals on the surface of activated carbon after supporting, which enhanced the desulfurization activity of activated carbon.Study on modification of activated carbonChemical functional groups as the active center dominated the surface chemical properties of activated carbon and activated carbon number and variety of surface functional groups was mainly determined by the production of activated carbon raw materials, so in the process of the preparation of activated carbon material by physical and chemical methods to increase the specific surface area of activated carbon material, adjusting the aperture and its distribution, makes the adsorption of activated carbon material surface structure change, thereby increasing physical adsorption properties of activated carbon material, to improve the adsorption performance has important significance.Petroleum coke, the by-product of oil refinery, is rich in resources, low in price, high in carbon content, low in ash and volatile, and is a high quality raw material for producing medium and high grade carbon.But because petroleum coke is easy graphitization carbon, compact structure, high crystallinity, lack of activation required by the primary hole, need to use a large number of strong alkali to activate the hole, resulting in high production cost, serious pollution.activated carbon for gold
Therefore, optimizing the process conditions, reducing the amount of alkali and controlling the micropore structure are the key to the development of petroleum coke based activated carbon with high specific surface area on the basis of activation mechanism.This also promotes the formation of large-scale production of activated carbon at home and abroad.There are many kinds of activated carbon products, according to raw materials can be divided into: coal based activated carbon, wood activated carbon, nut shell activated carbon and synthetic activated carbon.Due to the demand of environmental protection, the production of wood activated carbon is subject to more and more restrictions.activated carbon manufacturers in china
Wood activated carbon in China since the 1970 s, the proportion of total domestic activated carbon production of 80% to 40% of the 90 s, but our country coal resources are relatively abundant, variety complete, and low cost, stable and reliable supply, taking coal base as raw material to the production of coal based activated carbon percentage rise gradually, in the 1970 s and 90 s, coal-based activated carbon in China increased from 15% to 60% of the total amount of active carbon, and present a trend of increasing 1 all the time.At present, about 80% of China's coal-based activated carbon products are exported, and it is the largest coal-based activated carbon exporter in the world. Shanxi and Ningxia account for about 90% of China's coal-based activated carbon production and 80% of the export of coal-based activated carbon.Therefore, the production of coal-based activated carbon products has a broad prospect and is expected to achieve good economic benefits in the regions with rich raw material resources.At present, the production of coal-based activated carbon is mainly in Shanxi, Ningxia and Henan.The production of activated carbon with nut shell as raw material is mainly in hebei province; the production of activated carbon with wood as raw material is mainly concentrated in fujian, jiangxi, southern zhejiang and northeast region.In recent years, has gradually formed to Henan Changge City, Ningxia Yinchuan City and surrounding areas, Shanxi Datong region as the representative of the "three" activated carbon production base.Ningxia Yinlong Activated Carbon Co., Ltd. is the largest active carbon manufacturer in Asia with an annual output of 50,000 tons.Ningxia Huahui Activated Carbon Co., Ltd. manufactures a wide variety of activated carbon products and some of the performance of the products up to the world's advanced level.