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
  • B01J2/02—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
  • B01J2/06—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 liquid medium
  • B01J2/08—Gelation of a colloidal solution
• • 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
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties

Definitions

• the invention relates to a process for the continuous granulation of a mixture containing at least one solid and at least one liquid which tends to form gel.
• Such granulation takes place e.g. B. in the manufacture of detergents.
• Such granules have hitherto been produced as follows: The liquid ingredients have been sprayed onto a granulated carrier produced by spray drying or incorporated into a pre-prepared recipe using a granulation process. Solid ingredients, on the other hand, were either made into a slurry and spray-dried or directly mixed in as a powder.
• the invention has for its object to provide a method of the type mentioned, which works with a gel-like intermediate phase and can be operated continuously.
• This object is achieved according to the invention in a process of the type mentioned at the outset that a mixture containing liquid raw materials which does not tend to gel alone is used as the liquid which tends to gel formation and which is produced in a static mixer, the mean residence time in this Mixer is shorter than the gelation time that the liquid is then allowed to gel in a stirred tank, the mean residence time in the stirred tank being longer than the gelation time, and only then is the highly viscous mass obtained granulated together with the solid.
• the static mixer essentially consists of a tubular one Channel in which individual swirling elements are permanently installed, and when the liquid flows through this tubular element, it is thoroughly mixed.
• this viscosity can be influenced by using a coolable or heatable stirred tank.
• No special pelletizer is required for the invention.
• All commercially available granulating devices including, for example, continuous moistening mixers) are suitable for practicing the invention.
• a ploughshare mixer is used for granulating.
• the gel is granulated immediately after it has entered the granulating device is chopped and then swirled with the solid. The initial chopping results in a small particle size very soon after the gel has entered the granulator. This keeps the mass in the granulator free-flowing and does not cake into a large lump.
• a mixture of nonionic surfactants and what containing or. water-releasing substances such as B. Water glass or zeolite suspension is used. It is also advantageous if spray-dried zeolite and / or a layered silicate, in particular bentonite or. Solid mixtures of preferably non-polar or a few polar substances are used.
• the gel is continuously introduced and granulated by the liquids supplied to the stirred tank in a free-flowing manner or with the appropriate metering elements in the granulating device for producing the granules together with metered solids.
• nonionic surfactant e.g. B. Dehydol LST
• 20 parts water glass solution e.g. B. Water glass N
• 40 to 60 parts of zeolite suspension used.
• 35 to 55 parts of the gel described and 65 to 45 parts of solids or solid mixtures are used to form the granules.
• These solids consist of spray dried zeolite, e.g. B. Wessalith P, resp. Bentonite, or a mixture of zeolite and bentonite. It can also be a mixture of 30 to 70 parts of zeolite, 10 to 40 parts of bentonite and 10 to 30 parts of soda. The proportions are variable. However, soda should not make up more than 30 parts in the solid mixture.
• a specific example discloses a gel composed of 2.0 parts of nonionic surfactant, 10 parts of water glass and 20 parts of zeolite suspension, to which 50 parts of spray-dried zeolite are added. This gives a bulk density of 840 g / l, which is easy to pour.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Dispersion Chemistry (AREA)
• Detergent Compositions (AREA)
• Glanulating (AREA)
• Silicates, Zeolites, And Molecular Sieves (AREA)
• Medicinal Preparation (AREA)
• Saccharide Compounds (AREA)
• Mixers Of The Rotary Stirring Type (AREA)
• Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
• Housing For Livestock And Birds (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)
• Farming Of Fish And Shellfish (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
• Colloid Chemistry (AREA)
• Jellies, Jams, And Syrups (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6370352

Family Applications (2)

Family Applications After (1)

Country Status (11)

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Family Cites Families (4)

• 1988
  • 1988-12-27 DE DE3844025A patent/DE3844025A1/de not_active Withdrawn
• 1989
  • 1989-10-12 JP JP1511554A patent/JPH04502423A/ja active Pending
  • 1989-10-12 EP EP89912447A patent/EP0451159A1/de active Pending
  • 1989-10-12 KR KR1019900701221A patent/KR970010330B1/ko not_active Expired - Lifetime
  • 1989-10-12 ES ES89118963T patent/ES2057050T3/es not_active Expired - Lifetime
  • 1989-10-12 WO PCT/EP1989/001205 patent/WO1990007375A1/de not_active Ceased
  • 1989-10-12 AT AT89118963T patent/ATE91088T1/de not_active IP Right Cessation
  • 1989-10-12 DE DE8989118963T patent/DE58904842D1/de not_active Expired - Fee Related
  • 1989-10-12 EP EP89118963A patent/EP0375858B1/de not_active Expired - Lifetime
  • 1989-10-12 US US07/720,468 patent/US5188786A/en not_active Expired - Fee Related
  • 1989-11-08 TR TR89/0953A patent/TR24022A/xx unknown
• 1991
  • 1991-05-22 DK DK91963A patent/DK96391D0/da not_active Application Discontinuation
  • 1991-06-25 RU SU914895801A patent/RU1836137C/ru active

Non-Patent Citations (1)

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