公开(公告)号：US3912245A

公开(公告)日：1975-10-14

申请号：US41351873

申请日：1973-11-07

Applicant: HOECHST AG

Inventor： THUMMLER URSUS ,  ROTHKAMP JOSEF

IPC: B03B9/04 ,  F27B19/04 ,  C21B7/14

CPC classification number: C01B25/003 ,  B03B9/04 ,  C01B25/01 ,  F27B19/04

Abstract: Phosphorus furnace slag and ferrophosphorus are separated from one another. To this end, a mixture of phosphorus furnace slag and ferrophosphorus, which is tapped off periodically from a phosphorus furnace, is introduced into a separating zone fitted with a bottom outlet and an overflow, through which the phosphorus furnace slag floating on the ferrophosphorus is delivered to a solidification zone. The separating zone has the dimensions necessary to receive the quantity of ferrophosphorus tapped off, which is allowed to remain therein for a period between 0.25 and 2 hours, so as to complete the separation of the phosphorus furnace slag by allowing it to solidify above the liquid ferrophosphorus. Liquid ferrophosphorus is finally discharged through the bottom outlet in the separating zone and delivered to a solidification zone.

公开(公告)号：IN165880B

公开(公告)日：1990-02-03

申请号：IN684MA1985

申请日：1985-09-02

Applicant: HOECHST AG

Inventor： STAENDEKE HORST ,  THUMMLER URSUS

IPC: C01B25/00 ,  C01B25/023 ,  C06C15/00

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.

公开(公告)号：CA1210563A

公开(公告)日：1986-09-02

申请号：CA450208

申请日：1984-03-22

Applicant: HOECHST AG

Inventor： KUXDORF BERNHARD ,  LUHR PETER ,  WERNER HUGO ,  THUMMLER URSUS ,  DORN FRIEDRICH-WILHELM

IPC: B01J19/00 ,  C01B25/12 ,  C01B25/20

Abstract: PROCESS AND APPARATUS FOR MAKING PHOSPHORUS PENTOXIDE WITH UTILIZATION OF REACTION HEAT 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 a liquid or liquid/steam-mixture as a heat carrier abstracting the reaction heat to be circulated through the cooling system, the liquid or liquid/steam-mixture assuming an increased temperature being preferably so circulated under increased pressure; for steam formed in the cooling system to be continuously taken therefrom; for an equivalent proportion of fresh liquid to be introduced into the cooling system; for hot P2O5 issuing in vapor form from the combustion chamber to be condensed or worked up into desirable final product, the combustion chamber being a cylindrical vessel with a height/diameter-ratio of 2.5 : 1 to 5 : 1 and having 1 to 10 burners disposed axisymmetrically in its circular base plate. The disclosure also relates to an apparatus for carrying out the process (Figure 1).

公开(公告)号：ZA842764B

公开(公告)日：1984-12-24

申请号：ZA842764

申请日：1984-04-13

Applicant: HOECHST AG

Inventor： THUMMLER URSUS ,  WERNER HUGO

IPC: B01J19/28 ,  C01B25/02 ,  C01B25/023 ,  C01B

公开(公告)号：CA996473A

公开(公告)日：1976-09-07

申请号：CA172823

申请日：1973-05-31

Applicant: HOECHST AG

Inventor： EBERT HANS ,  THUMMLER URSUS ,  WERNER HUGO

IPC: C01B25/02 ,  B03C3/88

Abstract: Continuous work-up of moist, phosphorus-containing residues, particularly of residues which originate from the filtration of yellow phosphorus or phosphorus-containing effluent water. To this end, intimate contact is produced, in an electrical precipitation zone adapted to free phosphorus furnace gas from dust, between the moist phosphorus-containing residue and hot dust originating from phosphorus furnace gas and covering the bottom portion of said electrical precipitation zone. Residue and dust are contacted in a quantitative ratio between 1 and 2. Resulting, substantially phosphorus-free residue is mechanically removed from the electrical precipitation zone together with dust precipitated from the phosphorus furnace gas, in the electrical precipitation zone. A phosphorus/water-mixture produced by vaporization of the moist residue is passed through the electrical precipitation zone and the mixture is introduced jointly with dust-free phosphorus furnace gas coming from the precipitation zone into a condensation zone placed downstream of the precipitation zone, wherein the mixture and dust-free phosphorus furnace gas are precipitated.

公开(公告)号：CA994251A

公开(公告)日：1976-08-03

申请号：CA165735

申请日：1973-03-09

Applicant: HOECHST AG

Inventor： EBERT HANS ,  KAMPMANN FRIEDRICH-WILHELM ,  THUMMLER URSUS ,  WERNER HUGO

公开(公告)号：CA2006076A1

公开(公告)日：1990-07-14

申请号：CA2006076

申请日：1989-12-20

Applicant: HOECHST AG

Inventor： STAENDEKE HORST ,  THUMMLER URSUS

IPC: C01B25/00 ,  C08K3/02 ,  C08K3/22 ,  C08K9/02 ,  C09K15/02

Abstract: In a stabilized, pulverulent red phosphorus comprising phosphorus particles having a maximum particle size of 2 mm whose surface is covered with a thin layer of an oxidation stabilizer, the oxidation stabilizer is composed of tin oxide hydrate.

公开(公告)号：CA1245422A

公开(公告)日：1988-11-29

申请号：CA451608

申请日：1984-04-10

Applicant: HOECHST AG

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

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

Abstract: 23343-768 PROCESS FOR MAKING PHOSPHOROUS PENTOXIDE AND OPTIONALLY PHOSPHORIC ACID WITH UTILIZATION OF THE REACTION HEAT The disclosure relates to a process for making phosphorous 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 to 600.degree.C under constant pressure, and for the steam so superheated to be used.

公开(公告)号：AU561506B2

公开(公告)日：1987-05-07

申请号：AU2796284

申请日：1984-05-11

Applicant: HOECHST AG

Inventor： KUXDORF BERNHARD ,  LUHR PETER ,  THUMMLER 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.