CA1197959A - Device for feeding and spraying molten caustic soda - Google Patents

Device for feeding and spraying molten caustic soda

Info

Publication number
CA1197959A
CA1197959A CA000428692A CA428692A CA1197959A CA 1197959 A CA1197959 A CA 1197959A CA 000428692 A CA000428692 A CA 000428692A CA 428692 A CA428692 A CA 428692A CA 1197959 A CA1197959 A CA 1197959A
Authority
CA
Canada
Prior art keywords
caustic soda
molten caustic
feeding
soda
molten
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000428692A
Other languages
French (fr)
Inventor
Kurt Hannesen
Fritz Krahl
Heinz Steinrotter
Siegfried Benninger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of CA1197959A publication Critical patent/CA1197959A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1057—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces with at least two outlets, other than gas and cleaning fluid outlets, for discharging, selectively or not, different or identical liquids or other fluent materials on the rotating element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
    • B05B3/1021—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/42—Concentration; Dehydration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02—Apparatus characterised by their chemically-resistant properties
    • B01J2219/0204—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02—Apparatus characterised by their chemically-resistant properties
    • B01J2219/0204—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components
    • B01J2219/0227—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components of graphite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Processing Of Solid Wastes (AREA)
  • Detergent Compositions (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
  • Glanulating (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Abstract of the disclosure In this device which substantially consists of lye pump and spray cage, those parts being in direct contact with the molten caustic soda are coated with and/or made from glassy carbon in order to prevent wear.

Description

2 HOE 82/F 112 Subject of the invention is a device for feeding and spray-ing molten caustic soda, which substantially consists of lye pump and spray head.
In the manufacture of caustic soda according to the prill process, molten eaustic soda is fed by a lye pump, for example an immersion purnp, to a spray head by meclns of which it is divided into individual drops at the top o~ a prill tower.
It has been observed that apparatus parts which are eontaeted espeeially with the streaming molten eaustic soda and possibly with oxygen in addition, are prone to consider-able wear although made from stainless steel, nickel, nickel alloys, silver or noble metal alloys.
It was therefore the objeet of` the invention to pro-vide an apparatus the parts of whieh being in contaet withmolten eaustic soda are substantially protected from wear.
In aeeordanee with the invention, this objeet has been aehieved in that those apparatus parts whieh are in direet eontaet with the molten eaustic soda either consist of glassy carbon or are coated with glassy carbon.
All apparatus parts such as parts of pumps, screens, pipes, elbows, fittings, spray heads, which are in eontact with the molten eaustie soda ean eonsist of glassy earbon or be eoated with glassy earbon.
The invention will be better understood by reference to the aeeompanying drawings showing two examples, FIGU~E 1 of whieh represents a spray head for molten eaustic soda, FIGURE 2 of whieh represents an immersion pump for molten eaustie soda.
The spray head (FIGURE 1) eonsist of a tube 1 for the driving shaft (not shown), and the bottom piece 2. On the bottom pieee 2, the jacket 4 of the head is mounted, which is made from glassy earbon and eontains the perforations 10 through whieh the molten eaustic soda is atomized. The jaeket 4 is fixed by a eover, a ring eollar 3, and the ~7~
3 ~ HOE 82/F l12 anchors consisting of bolts 5, washers 6 and nuts 7. The bottom piece 2 and the tube 1 are protected by a lining 8 and the bolts 5 by bushings 9, each made from glassy carbon.
11 represents the feeder ducts for the molten caustic soda~
which penetrate into the spray head via annular gaps 12.
The pump nousing of the immersion pump (FIGURE 2) con-sits of the guide device 13 and the suction plate 14. The hub of the impeller 15 passes through the guide device 13 consisting of pump housing piece 18, lining 17 and guide blade 19, and it bears the driving shaft. The guide device 13 has a lining 17 for protecting the pump housing piece 18, which lining 17 bears the guide blades 19. Likewise, suction plate 14 is provided with a lining 20 procecting plate 14, and the tube 21 thereof serves as suction pipe for the molten caustic soda. Suction plate 14 and pump housing piece 18 form an annular channel 22, via which the molten caustic soda is forwarded to an outlet tube 23. The annular channel 22 is provided with a guide ring 24. Lining 17 with guide blades 19, lining 20 with tube 21, and the pump impeller are made from glassy carbon. Likewise, guide ring 24 may be made from glassy carbon.

Claims (2)

What is claimed is:
1. A device for feeding and spraying molten caustic soda which substantially consists of lye pump and spray head, wherein those parts of the device being in direct contact with the molten caustic soda are coated with glassy carbon.
2. A device for feeding and spraying molten caustic soda which substantially consists of lye pump and spray head, wherein those parts of the device being in direct contact with the molten caustic soda consist of glassy carbon.
CA000428692A 1982-05-25 1983-05-24 Device for feeding and spraying molten caustic soda Expired CA1197959A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823219497 DE3219497A1 (en) 1982-05-25 1982-05-25 DEVICE FOR FEEDING AND SPRAYING MELTING MELT
DEP3219497.8 1982-05-25

Publications (1)

Publication Number Publication Date
CA1197959A true CA1197959A (en) 1985-12-17

Family

ID=6164373

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000428692A Expired CA1197959A (en) 1982-05-25 1983-05-24 Device for feeding and spraying molten caustic soda

Country Status (8)

Country Link
EP (1) EP0095145B1 (en)
JP (1) JPS58208134A (en)
AT (1) ATE18513T1 (en)
CA (1) CA1197959A (en)
DE (2) DE3219497A1 (en)
FI (1) FI72901C (en)
NO (1) NO161615C (en)
ZA (1) ZA833722B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3834151C1 (en) * 1988-10-07 1989-12-07 Benckiser-Knapsack Gmbh, 6802 Ladenburg, De
DE4439924A1 (en) * 1994-11-08 1996-05-09 Bayerische Motoren Werke Ag Carbon@ cladding layer for electrostatic spraying
DE19801700A1 (en) * 1998-01-17 1999-07-22 Cit Alcatel Fiber coating equipment, especially for optical glass fiber
DE19914165A1 (en) * 1999-03-29 2000-10-19 Bk Giulini Chem Gmbh & Co Ohg Device for the production of corrosive phosphate melts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1475809A (en) * 1966-02-17 1967-04-07 Lorraine Carbone Application of vitreous carbon to the manufacture of dies, wire guides, wear parts
US3733151A (en) * 1972-03-01 1973-05-15 Dow Chemical Co Pump assembly for handling liquid materials
DE2451969C2 (en) * 1974-10-30 1976-11-08 Aerospace Corp PROCESS FOR GLAZING WORKPIECES MADE OF CERAMIC, CHARCOAL OR CARBON

Also Published As

Publication number Publication date
FI72901B (en) 1987-04-30
NO161615C (en) 1989-09-06
ATE18513T1 (en) 1986-03-15
FI72901C (en) 1987-08-10
NO161615B (en) 1989-05-29
EP0095145A3 (en) 1984-05-02
EP0095145A2 (en) 1983-11-30
DE3362521D1 (en) 1986-04-17
FI831830A0 (en) 1983-05-23
EP0095145B1 (en) 1986-03-12
DE3219497A1 (en) 1983-12-01
JPS58208134A (en) 1983-12-03
FI831830L (en) 1983-11-26
NO831837L (en) 1983-11-28
ZA833722B (en) 1985-01-30

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry