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    REMOVAL OF CO2 AND/OR H2S FROM CRACKED GASES
    1.
    发明专利
    REMOVAL OF CO2 AND/OR H2S FROM CRACKED GASES 未知

    公开(公告)号：CA1078145A

    公开(公告)日：1980-05-27

    申请号：CA253571

    申请日：1976-05-28

    Applicant: BASF AG

    Inventor： HARTERT ERWIN ,  SCHWARZ HANS G ,  SLIWKA ARTUR

    IPC: B01D53/40 ,  B01D53/14 ,  B01D53/52 ,  B01D53/77 ,  C07C7/11 ,  C10K1/12 ,  B01D53/16

    Abstract: A process for removing CO2 and/or H2S from a cracked gas by bringing the said gas, at from 20 to 60.degree.C and under atmospheric pressure or superatmospheric pressure, into contact, in an absorption zone, with an aqueous solution of the alkali metal salts of aminoacids as the scrubbing liquor, freeing the solution leaving the absorption zone from CO2 and/or H2S by heating in a desorption zone, if necessary after first letting down the pressure, and then recycling the so-regenerated scrubbing liquor to the absorption zone, wherein the scrubbing liquor used is an aqueous solution of an alkalimetal salt of a N-dialkyl-.alpha.-aminomonocarboxylic acid.

    MANUFACTURE OF SUBSTITUTED GLYCINONITRILES
    2.
    发明专利
    MANUFACTURE OF SUBSTITUTED GLYCINONITRILES 未知

    公开(公告)号：CA1056402A

    公开(公告)日：1979-06-12

    申请号：CA243945

    申请日：1976-01-19

    Applicant: BASF AG

    Inventor： SCHLECHT HELMUT ,  DISTLER HARRY ,  HARTERT ERWIN

    IPC: C07C20060101 ,  C07C255/24 ,  C07C121/16

    Abstract: N-Alkylglycinonitriles are manufactured by reaction of N-alkylamines with formaldehyde and hydrocyanic acid under specific conditions of temperature, reaction time and hydrocyanic acid concentration. The N-alkylglycinonitriles obtainable by the process of the invention are valuable starting materials for the manufacture of dyes, fungicides, bactericides, textile assistants, and assistants used in dental cosmetics, gas purification and water repellent finishing.

    Drying of wet solid sodium cyanide
    3.
    发明专利
    Drying of wet solid sodium cyanide 未知

    公开(公告)号：GB926350A

    公开(公告)日：1963-05-15

    申请号：GB3816461

    申请日：1961-10-25

    Applicant: BASF AG

    Inventor： HARTERT ERWIN ,  SCHWARZ HANS GEORG

    IPC: C01C1/08 ,  C01C3/10 ,  F26B3/08

    Abstract: Wet solid sodium cyanide may be dried by suspending it in an air stream having a temperature of up to 500 DEG C., e.g. 100 to 200 DEG C. This process may be carried out in an air suspension drier, flash drier or fluidized bed. The wet solid is fed to a fluidized bed of solid sodium cyanide of water content below 0,5%. The drying air is free from CO2 and after passage through the bed, has entrained dust removed in a cyclone. The air is then recycled after washing with aqueous 30-50% NaOH, to remove water vapour and reheating. Specifications 802,091 and 834,765 are referred to.

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