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    PROCESS FOR MAKING PHOSPHORUS PENTOXIDE WITH UTILIZATION OF THE REACTION HEAT
    41.
    发明专利
    PROCESS FOR MAKING PHOSPHORUS PENTOXIDE WITH UTILIZATION OF THE REACTION HEAT 未知

    公开(公告)号：IN160622B

    公开(公告)日：1987-07-18

    申请号：IN268MA1984

    申请日：1984-04-17

    Applicant: HOECHST AG

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

    IPC: F22B33/18 ,  C01B25/12 ,  C01B25/20 ,  F22D1/02 ,  C01B25/00

    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.

    46.
    发明专利
    未知

    公开(公告)号：DD219169A5

    公开(公告)日：1985-02-27

    申请号：DD26295684

    申请日：1984-05-11

    Applicant: HOECHST AG

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

    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.

    PRODUCTION OF PHOSPHORUS PENTOXIDE WITH UTILIZATION OF REACTION HEAT
    47.
    发明专利
    PRODUCTION OF PHOSPHORUS PENTOXIDE WITH UTILIZATION OF REACTION HEAT 未知

    公开(公告)号：CA1156426A

    公开(公告)日：1983-11-08

    申请号：CA384645

    申请日：1981-08-26

    Applicant: HOECHST AG

    Inventor： DANIEL HELLMUTH ,  QUECK ROBERT ,  KUXDORF BERNHARD ,  PUESCHE HERBERT

    IPC: C01B25/12 ,  C01B25/20

    Abstract: PRODUCTION OF PHOSPHORUS PENTOXIDE WITH UTILIZATION OF REACTION HEAT The invention relates to process for making phosphorus pentoxide by subjecting elementary phosphorus to a combustion reaction with the aid of air, the reaction heat being utilized for the production of energy. To this end, the invention provides for the phosphorus to be subjected to combustion with dry air containing, per m3, 5 g down to 0.01 g of water, inside a combustion chamber of which the metallic walls are arranged so as to form a cooling system with cavities therein and for a liquid and liquid/steammixture, respectively, to be circulated through the cooling system under pressure within the range 1 to 150 bars, the liquid or mixture assuming a temperature of more than 150.degree.C up to 500.degree.C. Steam which is formed in the cooling system is continuously taken therefrom and replaced by an equivalent proportion of fresh liquid.

    REMOVAL OF RESIDUAL HYDROCARBONS FROM POLYOLEFINS
    48.
    发明专利
    REMOVAL OF RESIDUAL HYDROCARBONS FROM POLYOLEFINS 未知

    公开(公告)号：AU529574B2

    公开(公告)日：1983-06-09

    申请号：AU5505980

    申请日：1980-01-30

    Applicant: HOECHST AG

    Inventor： KAISER KARL ,  WILLMS ROBERT ,  KUXDORF BERNHARD

    IPC: C08F6/00 ,  C08F6/06 ,  C08F6/10 ,  C08F10/00 ,  C08F6/24

    Abstract: The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises A. introducing the hydrocarbon-containing polyolefin into an aqueous emulsifier-containing solution having a surface tension at 20 DEG C. of about 50 to 60 dynes/cm with respect to air; stirring the resulting mixture and converting it to a homogeneous dispersion, the aqueous dispersion containing about 10 to 40 weight % of the polyolefin; B. introducing the dispersion into the upper portion of a column provided with 5 to 30 sieve plates and overflow weirs and contacting the dispersion in countercurrent fashion with steam of about 100 DEG to 120 DEG C.

    PRODUCTION OF PHOSPHORUS PENTOXIDE
    50.
    发明专利
    PRODUCTION OF PHOSPHORUS PENTOXIDE 未知

    公开(公告)号：ZA816077B

    公开(公告)日：1982-09-29

    申请号：ZA816077

    申请日：1981-09-02

    Applicant: HOECHST AG

    Inventor： DANIEL HELLMUTH ,  QUECK ROBERT ,  KUXDORF BERNHARD ,  PUESCHE HERBERT

    IPC: C01B25/12 ,  C01B25/20 ,  C01B

    Abstract: The invention relates to process for making phosphorus pentoxide by subjecting elementary phosphorus to a combustion reaction with the aid of air, the reaction heat being utilized for the production of energy. To this end, the invention provides for the phosphorus to be subjected to combustion with dry air containing, per m3, 5 g down to 0.01 g of water, inside a combustion chamber of which the metallic walls are arranged so as to form a cooling system with cavities therein and for a liquid and liquid/steam-mixture, respectively, to be circulated through the cooling system under pressure within the range 1 to 150 bars, the liquid or mixture assuming a temperature of more than 150 DEG C. up to 500 DEG C. Steam which is formed in the cooling system is continuously taken therefrom and replaced by an equivalent proportion of fresh liquid.

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