GB1266874A - - Google Patents

Info

Publication number
GB1266874A
GB1266874A GB1266874DA GB1266874A GB 1266874 A GB1266874 A GB 1266874A GB 1266874D A GB1266874D A GB 1266874DA GB 1266874 A GB1266874 A GB 1266874A
Authority
GB
United Kingdom
Prior art keywords
pipe
dust
nitrate
molten material
air
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
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 filed Critical
Publication of GB1266874A publication Critical patent/GB1266874A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C05C9/005—Post-treatment
    • 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
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
    • 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
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C1/00—Ammonium nitrate fertilisers
    • C05C1/02—Granulation; Pelletisation; Stabilisation; Colouring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Fertilizers (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

1,266,874. Prilling. FISONS Ltd. 27 Oct., 1969 [30 July, 1968; 11 April, 1969], Nos. 36273/68 and 18609/69. Heading B5A. Molten material is prilled by causing it to flow through the orifice of a cylindrical bore at such a rate that the nozzle streams and inducing pressure waves of a uniform frequency less than 200 cps. and harmonic-free in the material during its flow through the orifice and cooling the drops formed to a solid. The prilling head 14, Fig. 2, may comprise a base 15 having nozzles 16, tapered at their ends and surrounded by P.T.F.E. sleeves 17, an air vent 21, and an electromagnetic vibrator 20 acting through rod 19 to vibrate the plate 18 which is immersed in the molten material. As shown in Fig. 1, the molten material is fed through pipe 5 to a constant level weir 4 having an overflow pipe 6, and through pipe 3 to the prilling head 1, the droplets formed falling through column 2. Dust from hopper 10 is fed by screw 11 through pipe 9 and into the column by air from pipe 24 where it is formed into a fluidized bed by air from pipe 7. A dust-laden gas zone is formed by air from pipe 8, the dust being returned via pipe 13 and filter 12. The dust-coated particles are fed out through pipe 21 having a valve 23 to a cooler 22. The molten material to be prilled may be ammonium nitrate; ammonium sulphate; ammonium phosphate nitrate; mixtures of ammonium nitrate with mono- or diammonium phosphate, potassium chloride or magnesium oxide; potassium phosphate; potassium nitrate; sodium nitrate; urea or mixtures of urea with the above. The dust may be the material being prilled, limestone, sand, mica, bentonite, gypsum, talc, clays, fertilizers, e.g. phosphate rock, magnesium oxide, magnesium carbonate, cement, earths, montmorillonite clays or micronized plastics.
GB1266874D 1968-07-30 1968-07-30 Expired GB1266874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3627368 1968-07-30

Publications (1)

Publication Number Publication Date
GB1266874A true GB1266874A (en) 1972-03-15

Family

ID=10386603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266874D Expired GB1266874A (en) 1968-07-30 1968-07-30

Country Status (1)

Country Link
GB (1) GB1266874A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710360A (en) * 1984-11-05 1987-12-01 Union Oil Company Of California Apparatus for dissolving urea and other endothermic materials
US8652367B2 (en) 2012-03-14 2014-02-18 Honeywell International Inc. Method and apparatus for prilling with pressure control
CN105498628A (en) * 2014-09-26 2016-04-20 中山市中智药业集团有限公司 Ultramicro powder trapping device for fluidized bed granulation system
CN106824023A (en) * 2017-01-10 2017-06-13 四川大学 A kind of spouted fluidized bed apparatus of sound field
CN112891039A (en) * 2021-01-14 2021-06-04 王书德 Gypsum treatment facility for orthopedics

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710360A (en) * 1984-11-05 1987-12-01 Union Oil Company Of California Apparatus for dissolving urea and other endothermic materials
US8652367B2 (en) 2012-03-14 2014-02-18 Honeywell International Inc. Method and apparatus for prilling with pressure control
CN105498628A (en) * 2014-09-26 2016-04-20 中山市中智药业集团有限公司 Ultramicro powder trapping device for fluidized bed granulation system
CN105498628B (en) * 2014-09-26 2018-02-09 中山市中智药业集团有限公司 A kind of ultrafine powder capturing device for fluidized bed granulation system
CN106824023A (en) * 2017-01-10 2017-06-13 四川大学 A kind of spouted fluidized bed apparatus of sound field
CN112891039A (en) * 2021-01-14 2021-06-04 王书德 Gypsum treatment facility for orthopedics

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee