Preparation of activated carbon with wood as raw material

(5) Preparation example

①Preparation of activated carbon with wood as raw material Two kinds of coniferous fir and masson pine in southern China and two broad-leaved paulownia and poplar in the north as raw materials, using zinc chloride as activator, and using different processes to prepare activated carbon

Raw material → sieving → zinc chloride impregnation → carbon activation → zinc chloride recovery → pickling → rinsing → drying → crushing

Main process parameters: sawdust drying air temperature is 280℃, after drying sawdust moisture 28%-30%; zinc chloride concentration (in °Be) is 45 (pH1), 48 (pH2) and 53 (pH2.

The ratio of zinc chips after mixing sawdust and zinc chloride at 45°Be is 1.

The main performance test results of activated carbon prepared under different process conditions are shown in Table 4-31

Table 4-31 The main performance test results of activated carbon prepared under different process conditions