GB1026329A - Preparation of pelletized solid materials - Google Patents

Preparation of pelletized solid materials

Info

Publication number
GB1026329A
GB1026329A GB3306064A GB3306064A GB1026329A GB 1026329 A GB1026329 A GB 1026329A GB 3306064 A GB3306064 A GB 3306064A GB 3306064 A GB3306064 A GB 3306064A GB 1026329 A GB1026329 A GB 1026329A
Authority
GB
United Kingdom
Prior art keywords
pellets
line
bed
particles
reintroduced
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
GB3306064A
Inventor
Frederic Chanler Tuttle
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB3306064A priority Critical patent/GB1026329A/en
Priority to DED45201A priority patent/DE1265715B/en
Publication of GB1026329A publication Critical patent/GB1026329A/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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
    • C07C39/24—Halogenated derivatives
    • C07C39/44—Metal derivatives of an hydroxy group bound to a carbon atom of a six-membered aromatic ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

Pellets of alkali and alkaline earth metal chlorides or silicates, such as sodium or calcium chloride or silicate, are formed by spray coating particles of the material with an aqueous solution thereof in one or more dilute zones in a fluidized bed, said zones being formed by injecting steam into the bed transverse to the flow of circulatory air. As in Fig. 1, particles of the material are fluidized in a vessel 1 by a stream of heated air from heater 6, which passes upwards through screen 10. Steam under pressure, together with a saturated aqueous solution of the material, is injected into the fluidized bed through a bifluid nozzle 1 and forms a dilute zone, as shown, in which the particles are coated, a solid coat being formed by the subsequent evaporation of the water. The pellets thus produced are drawn off through line 18 and elevator 3 to a screening mechanism 4, whence the oversized pellets are crushed at 5 and reintroduced to the bed through line 24, the underized pellets reintroduced through lines 22 and 24, and the pellets of the required size discharged into storage means through line 21. Any particles carried upwards, by the air, pass through line 16 to a cyclone 2 whence they are reintroduced into the bed through line 24.ALSO:Pellets of alkali metal pentachlorophenates such as sodium pentachlorophenate, or of alkali metal sulfonates of alkylated diphenyl oxide, are formed by spray coating particles of the material with an aqueous solution thereof in one or more dilute zones in a fluidized bed, said zones being formed by injecting steam into the bed transverse to the flow of circulatory air. As in Figure 1, particles of the material are fluidized in a vessel 1 by a stream of heated air from heater 6, which passes upwards through screen 10. Steam under pressure, together with a saturated aqueous solution of the material, is injected into the fluidized bed through a bifluid nozzle 1 and forms a dilute zone, as shown, in which the particles are coated, a solid coat being formed by the subsequent evaporation of the water. The pellets thus produced are drawn off through line 18 and elevator 3 to a screening mechanism 4, whence the oversized pellets are crushed at 5 and reintroduced to the bed through line 24, the undersized pellets reintroduced through lines 22 and 24, and the pellets of the required size discharged into storage means through line 21. Any particles carried upwards, by the air, pass through line 16 to a cyclone 2 whence they are reintroduced into the bed through line 24.
GB3306064A 1964-08-13 1964-08-13 Preparation of pelletized solid materials Expired GB1026329A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3306064A GB1026329A (en) 1964-08-13 1964-08-13 Preparation of pelletized solid materials
DED45201A DE1265715B (en) 1964-08-13 1964-08-17 Continuous process for the granulation of water-soluble solids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3306064A GB1026329A (en) 1964-08-13 1964-08-13 Preparation of pelletized solid materials

Publications (1)

Publication Number Publication Date
GB1026329A true GB1026329A (en) 1966-04-20

Family

ID=10348017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3306064A Expired GB1026329A (en) 1964-08-13 1964-08-13 Preparation of pelletized solid materials

Country Status (1)

Country Link
GB (1) GB1026329A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2263968A1 (en) * 1972-12-29 1974-07-11 Basf Ag PROCESS FOR MANUFACTURING NON-DUSTING OR PRACTICALLY NON-DUSTING COLORANT CORES
FR2519562A1 (en) * 1982-01-09 1983-07-18 Sandoz Sa PROCESS AND APPARATUS FOR THE PREPARATION OF A DUST-FREE GRANULAR PRODUCT
US4804146A (en) * 1985-05-30 1989-02-14 Alpine Aktiengesellschaft Method for the continuous production of granulates from a solid in a fluidized bed of material
WO1995013864A1 (en) * 1993-11-17 1995-05-26 Niro Holding A/S A process and a spray drying apparatus for producing an agglomerated powder
EP1426332A1 (en) * 2002-12-04 2004-06-09 Degussa AG Process for the preparation of anhydrous alkali metal sulfide

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2263968A1 (en) * 1972-12-29 1974-07-11 Basf Ag PROCESS FOR MANUFACTURING NON-DUSTING OR PRACTICALLY NON-DUSTING COLORANT CORES
FR2519562A1 (en) * 1982-01-09 1983-07-18 Sandoz Sa PROCESS AND APPARATUS FOR THE PREPARATION OF A DUST-FREE GRANULAR PRODUCT
US4804146A (en) * 1985-05-30 1989-02-14 Alpine Aktiengesellschaft Method for the continuous production of granulates from a solid in a fluidized bed of material
WO1995013864A1 (en) * 1993-11-17 1995-05-26 Niro Holding A/S A process and a spray drying apparatus for producing an agglomerated powder
US5632100A (en) * 1993-11-17 1997-05-27 Niro Holding A/S Process and a spray drying apparatus for producing an agglomerated powder
EP1426332A1 (en) * 2002-12-04 2004-06-09 Degussa AG Process for the preparation of anhydrous alkali metal sulfide

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