Process for preparing bamboo-based activated carbon and dedicated device therefor

Abstract

The invention discloses a preparing method and specific equipment of bamboo activated-carbon, which comprises the following steps: grinding; carbonizing continuously in the multi-pipe retort at 550-750 deg.c for 1-4 h; activating continuously in the retort at 800-950 deg.c for 48-72 h; pickling; bleaching; dehydrating; drying. The retort possesses stove base, furnace, several carbonizing pipes in the furnace vertically, feeder inlet on the top of retort, discharge device on the lower end, which is divided into preheating segment, carbonizing segment and cooling segment, wherein the retorting furnace contains furnace, heat-reserving chamber, chimney with furnace and heat-reserving chamber displaying left and right symmetrical structure; the furnace is separated into left and right half-furnaces by baffle; the heat-reserving chamber is divided into left and right two heat-reserving half-chamber correspondingly; the steam injecting pipe is set on the bottom of heat-reserving half-chamber; the vertical activating band is set in the furnace with several up-to-down carbonizing material channel and transverse gas flux to connect carbonizing material channel.

Description

technical field [0001] The invention relates to a preparation method of bamboo activated carbon and special equipment thereof, in particular to a method for preparing activated carbon by using bamboo branches and branches as raw materials and a carbonization furnace and an activation furnace used for realizing the method. Background technique [0002] Activated carbon is an excellent adsorbent with developed pore structure, large specific surface area and adsorption capacity. It is stable in nature, insoluble in water and organic solvents, resistant to acid and alkali, and easy to regenerate after use. There are many types of activated carbon, but the history of activated carbon manufacturing and application proves that compared with activated carbon produced from other raw materials, activated carbon produced from bamboo and wood materials has the advantages of large total pore volume, large specific surface area, large reactivity and less impurities. However, with the impr...

AI Technical Summary

Problems solved by technology

It can be seen that the position of the material is also fixed, so there are also large differences in the heating conditions of the materials in different positions and the contact and reaction with water vapor, and the defect that the uniformity and stability of product quality are difficult to guarantee.

[0008] Chinese patent 01131145.2 discloses "the method for preparing activated carbon from bamboo raw materials", in which there is no specific description about the equipment used, as far as the method used is concerned, there are both descriptions about the use of physical activation methods and descriptions about the use of chemical activation methods , but not very detailed

The consumption of raw materials for the production of one ton of activated carbon is: 3 to 5 tons by chemical method and 10 to 15 tons by physical method. Among them, when the physical method is used for activation, the carbon yield in the activation stage is less than 30%.

Images