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    DESENSITIZED RED PHOSPHORUS
    12.
    发明专利
    DESENSITIZED RED PHOSPHORUS 未知

    公开(公告)号：CA1284016C

    公开(公告)日：1991-05-14

    申请号：CA490085

    申请日：1985-09-05

    Applicant: HOECHST AG

    Inventor： STAENDEKE HORST ,  THUMMLER URSUS

    IPC: C01B25/00 ,  C01B25/023 ,  C01B25/043 ,  C08K3/02

    Abstract: DESENSITIZED RED PHOSPHORUS Desensitized pulverulent red phosphorus obtained by treating red phosphorus with a organic desensitizer which is liquid, inactive with respect to red phosphorus and has a minor vapor pressure at room temperature and atmospheric pressure, is comprised of 98 to 99.95 mass % red phosphorus having a particle size of up to about 2 mm and of 0.05 up to less than 2 mass % organic compound emulsifiable in water. The densitized phosphorus is made by introducing an aqueous emulsion of an organic desensitizer into an aqueous suspension of red phosphorus consisting of particles with a size of up to about 2 mm so as to have less than 2 to 0.05 mass parts organic desensitizer in more than 98 up to 99.95 mass parts red phsophorus; next, a pH within the range 5 to 9 is established and the mixture is stirred over a period of 0.5 to 3 hours at a temperature of 20 to 90.degree.C; the desensitized red phosphorus is ultimately filtered and dried at elevated temperature.

    13.
    发明专利
    未知

    公开(公告)号：MX162353A

    公开(公告)日：1991-04-26

    申请号：MX20133084

    申请日：1984-05-11

    Applicant: HOECHST AG

    Inventor： KUXDORF BERNHARD ,  LUHR PETER ,  THUMMLER URSUS ,  WERNER HUGO ,  KLEMM WALTER

    IPC: C01B25/12 ,  C01B25/20 ,  F22B33/18 ,  F22D1/02

    Abstract: The disclosure relates to a process for making phosphorus pentoxide by subjecting elemental yellow phosphorus to combustion with dried air inside a steel-made combustion chamber with utilization of the reaction heat for the production of energy. To this end, the disclosure provides for the combustion to be effected inside a combustion chamber of which the walls are arranged so as to form a cooling system with cavities therein; for water or a water/steam-mixture as a heat carrier abstracting the reaction heat to be circulated through the cooling system, the water or water/steam-mixture assuming an increased temperature being circulated, preferably under increased pressure; for steam formed in the cooling system to be continuously taken therefrom; for an equivalent proportion of fresh desalted water to be introduced into the cooling system; for hot gaseous phosphorus pentoxide issuing from the combustion chamber to be condensed or worked up into phosphoric acid; for the steam taken from the cooling system to be passed through a steam delivery pipe disposed in the upper portion of the combustion chamber, or through a delivery conduit for product gas containing phosphorus pentoxide; for the steam to be heated therein to a temperature of 400 DEG to 600 DEG C. under constant pressure, and for the steam so superheated to be used.

    PHLEGMATIZED RED PHOSPHORUS
    14.
    发明专利
    PHLEGMATIZED RED PHOSPHORUS 未知

    公开(公告)号：CA2010227A1

    公开(公告)日：1990-08-18

    申请号：CA2010227

    申请日：1990-02-16

    Applicant: HOECHST AG

    Inventor： STAENDEKE HORST ,  THUMMLER URSUS

    IPC: C01B25/00 ,  C08K3/02 ,  C08K9/04 ,  C08K9/08 ,  C01B25/023 ,  C01B25/043

    Abstract: HOE 89/H 008 Phlegmatized red phosphorus : Phlegmatized, pulverulent red phosphorus with good freeflowing properties comprises 95 to 99.95 % by weight of red phosphorus having a particle size of up to 2 mm, and 0.05 to 5 % by weight of polyurethane as phlegmatization agent. This red phosphorus is prepared by introducing an aqueous polyurethane dispersion into an aqueous suspension of red phosphorus having a particle size of up to 2 mm, after a pH of from 5 to 9 has been set, in a manner such that 5 to 0.05 parts by weight of polyurethane are present per 95 to 99.95 parts by weight of red phosphorus, then stirring the mixture at a temperature of from 20 to 90.degree.C for 0.5 to 3 hours, and finally drying the phlegmatized red phosphorus at elevated temperature after filtration.

    MAKING PHOSPHORUS PENTOXIDE
    18.
    发明专利
    MAKING PHOSPHORUS PENTOXIDE 未知

    公开(公告)号：AU2796284A

    公开(公告)日：1984-11-15

    申请号：AU2796284

    申请日：1984-05-11

    Applicant: HOECHST AG

    Inventor： KUXDORF BERNHARD ,  WERNER HUGO ,  KLEMM WALTER ,  LUHR PETER ,  THUMMLER URSUS

    IPC: F22B33/18 ,  C01B25/12 ,  C01B25/20 ,  F22D1/02

    Abstract: The disclosure relates to a process for making phosphorus pentoxide by subjecting elemental yellow phosphorus to combustion with dried air inside a steel-made combustion chamber with utilization of the reaction heat for the production of energy. To this end, the disclosure provides for the combustion to be effected inside a combustion chamber of which the walls are arranged so as to form a cooling system with cavities therein; for water or a water/steam-mixture as a heat carrier abstracting the reaction heat to be circulated through the cooling system, the water or water/steam-mixture assuming an increased temperature being circulated, preferably under increased pressure; for steam formed in the cooling system to be continuously taken therefrom; for an equivalent proportion of fresh desalted water to be introduced into the cooling system; for hot gaseous phosphorus pentoxide issuing from the combustion chamber to be condensed or worked up into phosphoric acid; for the steam taken from the cooling system to be passed through a steam delivery pipe disposed in the upper portion of the combustion chamber, or through a delivery conduit for product gas containing phosphorus pentoxide; for the steam to be heated therein to a temperature of 400 DEG to 600 DEG C. under constant pressure, and for the steam so superheated to be used.

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