Hci or hbr vapor carbonization of vegetable material in the manufacture of activated carbon
    2.
    发明授权
    Hci or hbr vapor carbonization of vegetable material in the manufacture of activated carbon 失效
    活性碳制品中的植物材料的HCI或HBR蒸气碳化

    公开(公告)号:US3557020A

    公开(公告)日:1971-01-19

    申请号:US69700868

    申请日:1968-01-11

    CPC classification number: C01B32/336

    Abstract: WOOD OR OTHER VEGETABLE MATERIAL HAVING A NON-UNIFORM SHAPE SUCH AS SHAPELESS PARTICLE POWDER, FLAKY POWDER, CHIP AND THE OTHERS IS CARBONIZED IN AN ACIDIC ATMOSPHERE CONTAINING VAPOR OR GAS OF HYDROCHLORIC OR HYDROBROMIC ACID OR ITS ANHYDRIDE FOR 10 MINUTES TO 10 HOURS AT A TEMPERATURE OF 80-1200* C. TO OBTAIN ACTIVATED CARBON OF SUPERIOR ADSORPTION ACTIVITY IN VERY HIGH YIELDS. IF DESIRED, THE ACTIVATED CARBON SO OBTAINED IS HEATED FURTHER IN AN ATMOSPHERE CONTAINING AN OXIDIZING GAS SUCH AS STEAM, CARBON DIOXIDE GAS OR AIR, OR IN AN INERT ATMOSPHERE TO IMPROVE THE ADSORPTION ACTIVITY OF SAID CARBON.

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