GB1389821A - Prilling - Google Patents

Prilling

Info

Publication number
GB1389821A
GB1389821A GB1389371*[A GB1389371A GB1389821A GB 1389821 A GB1389821 A GB 1389821A GB 1389371 A GB1389371 A GB 1389371A GB 1389821 A GB1389821 A GB 1389821A
Authority
GB
United Kingdom
Prior art keywords
plate
epoxy resin
prilling
coated
tubes
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
GB1389371*[A
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.)
Fisons Ltd
Original Assignee
Fisons Ltd
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 Fisons Ltd filed Critical Fisons Ltd
Priority to GB1389371*[A priority Critical patent/GB1389821A/en
Priority to ZA722402A priority patent/ZA722402B/en
Priority to IL39197A priority patent/IL39197A/en
Priority to CA140,706A priority patent/CA1000017A/en
Priority to AT374172A priority patent/AT326619B/en
Priority to BE782863A priority patent/BE782863A/en
Priority to JP4266172A priority patent/JPS5522137B1/ja
Priority to FR7215459A priority patent/FR2137516B1/fr
Priority to AU41842/72A priority patent/AU475546B2/en
Priority to DE2222008A priority patent/DE2222008C3/en
Priority to DK225772AA priority patent/DK130918B/en
Priority to SE7206000A priority patent/SE373755B/xx
Priority to ES402465A priority patent/ES402465A1/en
Priority to BR2845/72A priority patent/BR7202845D0/en
Priority to NL7206227A priority patent/NL7206227A/xx
Priority to IT24058/72A priority patent/IT955299B/en
Publication of GB1389821A publication Critical patent/GB1389821A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Epoxy Resins (AREA)
  • Fertilizers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1389821 Prilling FISONS Ltd 10 April 1972 [8 May 1971] 13893/71 Heading B5A A prilling head distributor plate has a plurality of bores the interior surface of which are of epoxy resin. Either the bores are coated with epoxy resin, or the plate is made thereof. Preferably, the plate is of mild or stainless steel with tubes of these materials, either integral or removable, forming the bores, the tubes being coated internally with epoxy resin and, preferably, coated externally with material which will not readily be wetted by the material being prilled. The external coating may be, e.g. a fluorocarbon, a mixture of ceramic and fluorocarbon, or a silicone rubber and may also be applied to the plate surface between the tubes. Alternatively, the plate may be of polytetrafluoroethylene in which case it need not be coated. Preferably, the tubes taper to a sharp nozzle rim (Fig. 2, not shown), and project below the plate. Suitable dimensions for all components are given. The epoxy resin coating is obtained by applying a prepolymer and curing in situ by catalyst and/or hardener of which examples are given. The epoxy resin prepolymer is preferably derived from epichlorhydrin and a bisphenol such as diphenylol methane, diphenylol propane or di-(dichlorophenylol)propane, a formula for the preferred type of bisphenol being given. The construction of a heated prilling head embodying such a distributor plate (Fig. 1, not shown), is described together with its use for prilling melts of ammonium nitrate, urea, ammonium nitrate/ammonium phosphate; mixtures of urea and potassium chloride or of ammonium nitrate and ammonium sulphate. The prilling tower may have a flexible lining of p.v.c. coated nylon or canvas or of p.v.c. or polyethylene sheeting. The molten material may have pressure waves induced in it by providing a transverse plate just above the distributor and reciprocating the former at 50 to 120 c.p.s. The droplets may fall through an upward stream of gas which may contain dust of the material being prilled, or of another fertilizer, or of some other material of which a large number of examples is given. A second fluidized bed of larger solid particles may be formed below this dust zone; these particles being of the same or different materials and formed either in the same or a separate gas stream.
GB1389371*[A 1971-05-08 1971-05-08 Prilling Expired GB1389821A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
GB1389371*[A GB1389821A (en) 1971-05-08 1971-05-08 Prilling
ZA722402A ZA722402B (en) 1971-05-08 1972-04-10 Prilling plate
IL39197A IL39197A (en) 1971-05-08 1972-04-12 Process and apparatus for prilling molten material
CA140,706A CA1000017A (en) 1971-05-08 1972-04-27 Prilling
AT374172A AT326619B (en) 1971-05-08 1972-04-28 METHOD OF PRILLING MOLTEN MATERIAL AND PRILLING HEAD FOR CARRYING OUT THE PROCEDURE
BE782863A BE782863A (en) 1971-05-08 1972-04-28 GRANULATION APPARATUS AND METHOD
JP4266172A JPS5522137B1 (en) 1971-05-08 1972-05-01
FR7215459A FR2137516B1 (en) 1971-05-08 1972-05-02
AU41842/72A AU475546B2 (en) 1971-05-08 1972-05-03 Prilling
DE2222008A DE2222008C3 (en) 1971-05-08 1972-05-05 Nozzle plate for prilling molten material and use of such a nozzle plate for prilling ammonium nitrate and / or urea
DK225772AA DK130918B (en) 1971-05-08 1972-05-05 Process for prilling molten ammonium nitrate and / or urea, optionally containing ammonium phosphate, and prilling head for use in the process.
SE7206000A SE373755B (en) 1971-05-08 1972-05-05
ES402465A ES402465A1 (en) 1971-05-08 1972-05-06 Prilling
BR2845/72A BR7202845D0 (en) 1971-05-08 1972-05-08 HEAD TO FORM MATERIAL IN PEARLS AND THE FORMATION PROCESSES THAT USE SUCH A HEAD
NL7206227A NL7206227A (en) 1971-05-08 1972-05-08
IT24058/72A IT955299B (en) 1971-05-08 1972-05-08 SPHERULIZATION HEAD AND PROCEDURES THAT MAKE USE OF IT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1389371*[A GB1389821A (en) 1971-05-08 1971-05-08 Prilling

Publications (1)

Publication Number Publication Date
GB1389821A true GB1389821A (en) 1975-04-09

Family

ID=10031295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1389371*[A Expired GB1389821A (en) 1971-05-08 1971-05-08 Prilling

Country Status (16)

Country Link
JP (1) JPS5522137B1 (en)
AT (1) AT326619B (en)
AU (1) AU475546B2 (en)
BE (1) BE782863A (en)
BR (1) BR7202845D0 (en)
CA (1) CA1000017A (en)
DE (1) DE2222008C3 (en)
DK (1) DK130918B (en)
ES (1) ES402465A1 (en)
FR (1) FR2137516B1 (en)
GB (1) GB1389821A (en)
IL (1) IL39197A (en)
IT (1) IT955299B (en)
NL (1) NL7206227A (en)
SE (1) SE373755B (en)
ZA (1) ZA722402B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188864A (en) * 1986-04-11 1987-10-14 Imp Colour Masterbatches Ltd Masterbatch production
US5514307A (en) * 1992-10-13 1996-05-07 Laroche Industries, Inc. Process for the reducing emissions during prilling of material such as ammonium nitrate
DE102007061408A1 (en) * 2007-12-11 2009-06-18 Sandvik Materials Technology Deutschland Gmbh Method and drop former for producing pastilles and method for producing a sulfur-containing fertilizer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1241797A (en) * 1983-03-22 1988-09-06 Teruhiko Sugimori Method for coagulation of polymer latices and extruder therefor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250411B (en) * 1967-09-21 Chicago Bridge &. Iron Company Oak Brook 111 (V St A) Device for making prills
DE1442900B2 (en) * 1964-12-04 1971-05-13 Siemens AG, 1000 Berlin u 8000 München Method and apparatus for the manufacture of spherical particles made of high temperature-resistant material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188864A (en) * 1986-04-11 1987-10-14 Imp Colour Masterbatches Ltd Masterbatch production
GB2188864B (en) * 1986-04-11 1990-01-31 Imp Colour Masterbatches Ltd Masterbatch production
US5514307A (en) * 1992-10-13 1996-05-07 Laroche Industries, Inc. Process for the reducing emissions during prilling of material such as ammonium nitrate
DE102007061408A1 (en) * 2007-12-11 2009-06-18 Sandvik Materials Technology Deutschland Gmbh Method and drop former for producing pastilles and method for producing a sulfur-containing fertilizer
US8349229B2 (en) 2007-12-11 2013-01-08 Sandvik Materials Technology Deutschland Gmbh Method and drop former for producing tablets and method for producing a sulfurous fertilizer

Also Published As

Publication number Publication date
IT955299B (en) 1973-09-29
DK130918B (en) 1975-05-05
BR7202845D0 (en) 1974-01-22
DE2222008C3 (en) 1981-08-13
ZA722402B (en) 1973-02-28
ES402465A1 (en) 1976-01-01
FR2137516A1 (en) 1972-12-29
JPS5522137B1 (en) 1980-06-14
DE2222008A1 (en) 1972-11-16
FR2137516B1 (en) 1978-05-26
AT326619B (en) 1975-12-29
NL7206227A (en) 1972-11-10
IL39197A0 (en) 1972-06-28
AU475546B2 (en) 1976-08-26
ATA374172A (en) 1975-03-15
AU4184272A (en) 1973-11-08
IL39197A (en) 1975-02-10
CA1000017A (en) 1976-11-23
DE2222008B2 (en) 1980-10-30
BE782863A (en) 1972-10-30
DK130918C (en) 1975-10-06
SE373755B (en) 1975-02-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee