DK161003B - PROCEDURE AND APPARATUS FOR CHEMICAL PREPARATION BY WHEEL LAYER - Google Patents

PROCEDURE AND APPARATUS FOR CHEMICAL PREPARATION BY WHEEL LAYER Download PDF

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Publication number
DK161003B
DK161003B DK73684A DK73684A DK161003B DK 161003 B DK161003 B DK 161003B DK 73684 A DK73684 A DK 73684A DK 73684 A DK73684 A DK 73684A DK 161003 B DK161003 B DK 161003B
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Denmark
Prior art keywords
germs
vortex
granulate
preparing
granules
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DK73684A
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Danish (da)
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DK161003C (en
DK73684D0 (en
DK73684A (en
Inventor
Joerg Kliefoth
Joerg Schmidt
Lothar Moerl
Christof Eversmann
Frank Neupert
Gerald Caspers
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Thaelmann Schwermaschbau Veb
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    • 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
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/40—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution
    • A23L3/50—Fluidised-bed drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Description

- i -- i -

DK 161003 BDK 161003 B

Opfindelsen angår en fremgangsmåde og et apparat til udøvelse af fremgangsmåden til tilberedning af kim, som sammen med et kohæsionsfattigt stof tørres i en kontinuerligt arbejdende hvirvel lagsgranulattørrer til granulater. Fremgangsmåden og apparatet kan anvendes over-5 alt, hvor kohæsionsfattige stoffer, som foreligger som suspensioner, opløsninger eller smelter, skal tørres i kontinuerligt arbejdende hvir-vellagsgranulattørrere til granulater.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method and apparatus for practicing the process of preparing germs, which, together with a cohesion-poor substance, is dried in a continuous-working swirl granule dryer granulate. The process and apparatus can be used anywhere where cohesion-poor substances present as suspensions, solutions or melts are to be dried in continuous-working, granular granular dryers.

For at drive et kontinuerligt arbejdende hvirvel lagsgranulattørringsanlæg skal dette med bestemte afstande tilføres nye kim, som derpå 10 vokser til en defineret størrelse, udgangsstørrelsen, som afhænger af tætheden af det materiale, som skal tørres, og tætheden samt hastigheden af luften, der hersker i det centrale udgangsrør.In order to operate a continuous working vortex pellet granulator, this must be applied at certain distances to new germs, which then grow to a defined size, the output size, which depends on the density of the material to be dried, and the density and velocity of the air prevailing in it. the central exit pipe.

Ved kendte kontinuerligt arbejdende hvirvellagsgranulattørrere, DD-patentskrift 140.005, 137.005 og CH-patentskrift 558.674, sønderde-15 les en del af det udtagne granulat udenfor hvirvellagsapparatet til kim, eller småpartikler og atter ført tilbage til hvirvellaget. Mængden af kim retter sig efter tilførslen af faststof, og mængden af den væske, som skal tørres, retter sig efter kimdiameteren og granulatets udgangsdiameter.In known continuous working fluidized bed granule dryers, DD patent 140,005, 137,005 and CH patent 558,674, a portion of the granular extracted outside the vortex bedding apparatus is disintegrated or small particles and returned to the fluidized bed. The amount of germ is directed to the supply of solids, and the amount of the liquid to be dried is directed to the germ diameter and the outlet diameter of the granulate.

20 Som bekendt ligger kimtilførslen omkring ca. 5% - 10% af slutpro duktet. Fremstillingen og tilførslen af kim i granuleringstørreren er forbundet med et yderligere transportopbud. På grund af den med sønderdelingen opståede støvudvikling øges eksplosionsrisikoen. Ved tilførslen af kim til hvirvellaget fjernes en del af kimene på grund af over-25 skride!se af udgangshastigheden, fra granuleringstørreren, og der fremkommer i udskilleren en forøget støvmængde.20 As is known, the seed supply is about 5% - 10% of the final product. The production and supply of germs in the granulation dryer are associated with a further transport supply. Due to the dust development that resulted from the decomposition, the risk of explosion increases. Upon application of germs to the vertebrate, part of the germs is removed from the granulation dryer by excess of the output velocity, and an increased amount of dust appears in the separator.

Det er formålet med opfindelsen at regulere sønderdelingen således, at transportopbudet og støvudviklingen mindskes, eksplosionsrisikoen indskrænkes og belastningen af udskilleren med småpartikler mind-30 skes.It is the object of the invention to regulate the decomposition so that the transport supply and dust development are reduced, the risk of explosion is reduced and the load of the separator with small particles is reduced.

Til grund for opfindelsen ligger den opgave at tilvejebringe en fremgangsmåde og et apparat til udøvelse af fremgangsmåden til fremstilling af kim af allerede fremstillede granulater, hvor sønderdelingen, tilførslen til hvirvellaget og udtagningen fra hvirvellaget skal 35 ske i et i sig selv regulerbart lukket system i hvirvel lagsanlægget.The object of the invention is to provide a method and apparatus for practicing the process for the production of germs of already prepared granules, in which the disintegration, the supply to the vertebrate layer and the withdrawal from the vertebrate layer must be carried out in a self-regulated closed vortex system. tier system.

Ifølge opfindelsen løses opgaven ved, at DK 161003 E3^ - 2 - a) granulaterne, som har nået en bestemt diameter og dermed en bestemt masse, udtages fra hvirvel kammereret under tyngdekraftbetingelser i modstrømning mod den udgangsluft, som tilføres til udtagsrøret nedenfra, 5 b) den til kim-dannelsen nødvendige mængde granulat sønderdeles til kim, medens resten af granulatet bortledes uden sønderdeling, c) de af granulatet fremstillede kim atter føres med udgangsluften tilbage til hvirvel!åget, hvor de danner nye kim til granulatdannelsen.According to the invention, the task is solved by DK 161003 E3 ^ - 2 - a) the granules which have reached a certain diameter and thus a certain mass, are withdrawn from the vortex chamber under gravity conditions in counter-flow to the outlet air supplied to the outlet pipe from below; ) the amount of granulate needed for the germ formation is decomposed into germs, while the rest of the granulate is dissipated without decomposition; c) the germs produced by the granulate are returned to the vortex with the exit air where they form new germs for the granulation formation.

1010

Det hører endvidere til opfindelsen, at hvirvel lagskammeret er forbundet med et sønderdelingsrum, som er anbragt neden under hvirvel-lagskammeret, ved hjælp af en granulatudtagningskanal, som fortrinsvis er luftgennemstrømmet, og som ud for sønderdelings rummet er udformet 15 som en parallel strækning og nedenfor sønderdelingsrummet står i forbindelse med dette, hvorhos der mellem denne forbindelse og forbindelsesstedet mellem hvirvel lagskammeret og udtagskanalen er anbragt en sønderdeler, og at der i den centrale granulatudtagningskanal ved forgreningen til parallelstrækningen er anbragt en fordelerklap med henblik 20 på fastsættelse af den til kim-dannelsen nødvendige mængde granulat. Sønderdelerens drev er forbundet med et reguleringsorgan.Further, it is an object of the invention that the fluidized bed chamber is connected to a disintegrating space disposed below the fluidized space by means of a granular withdrawal duct, which is preferably air flowed and which is formed outside the disintegrating space as a parallel stretch and below. the disintegration space is associated therewith, between this connection and the point of connection between the vortex layer chamber and the outlet duct, a disintegrator is disposed, and in the central granule withdrawal duct at the branch to the parallel section there is provided a distributor flap for fixing it to the germ required amount of granules. The crusher drive is connected to a regulator.

Det hører også til opfindelsen, at sønderdeleren fortrinsvis består af to valser, som roterer mod hinanden i retning mod udtagskanalen og er anbragt parallelt med hinanden på tværs af hvirvel lagskammerets 25 længdeakse, hvorhos spalten mellem valserne er variabel i størrelsen ved forskydning af én eller begge valser.It is also an object of the invention that the splitter preferably consists of two rollers which rotate towards each other in the direction of the outlet channel and are arranged parallel to each other across the longitudinal axis of the swirl chamber 25, the gap between the rollers being variable in size by displacing one or both rollers.

Det er også i overensstemmelse med opfindelsen, at sønderdeleren fortrinsvis er forsynet med en indretning til indstilling af kimstørrelsen.It is also in accordance with the invention that the shredder is preferably provided with a device for adjusting the seed size.

30 Sønderdeleren arbejder ikke kontinuerligt, men styres ved hjælp af tryktabet i hvirvel laget. Granulaterne udtages via en parallelstrækning i udtagsrøret. Granulatstrømmen ledes ved hjælp af et regulerbart fordelerorgan i den til enhver tid nødvendige retning. På grund af kimtilberedningssystemet inden i det centrale udtagsrør reduceres støvudvik-35 lingen væsenligt, og mængden af det granulat, som er sønderdelt forThe crusher does not operate continuously, but is controlled by the pressure loss in the vortex layer. The granules are withdrawn via a parallel section of the outlet tube. The granular flow is conducted by means of an adjustable distributor in the direction necessary at all times. Due to the germ preparation system within the central outlet tube, the dust development is substantially reduced and the amount of granulate decomposed for

DK 161003 BDK 161003 B

- 3 - småt, og som hidtil blev ført ud af hvirvellaget, mindskes.- 3 - small, and so far removed from the vertebra, diminishes.

Opfindelsen forklares nærmere ved hjælp af et udførelseseksempel og den dertil hørende tegning.The invention is further explained by means of an exemplary embodiment and the accompanying drawing.

Ved granuleringstørring af sol sikkeproteinsuspensioner udvindes 5 granulater med en diameter på 10 mm. Kimdiameteren andrager hensigtsmæssigt 4 mm. For at kunne opretholde den kontinuerlige tørrings- og granuleringsfremgangsmåde i hvirvel kammeret 2 er det nødvendigt atter at føre 1,5 masse-% af det fremstillede granulat tilbage som kim til hvirvel laget ved et faststofindhold i suspensionen på 12 masse-%. Med 10 relækobling opnås det, at den til kimudviklingen nødvendige granulatmængde i det centrale udtagsrør 3 ved hjælp af fordelerorganet 5 føres til en i udtagsrøret 3 monteret sønderdel er 1, og at det sønderdel te granulat atter føres tilbage som kim til hvirvellaget med udgangsluften. Ved denne fremgangsmåde kan det opnås, at støvmængden i en cyklon 15 kan sænkes med 15%, da de for meget sønderdel te granulater for det meste opfanges i hvirvel laget og bidrager til nydannelse af granulater.Upon granulation drying of sun sickle protein suspensions, 5 granules with a diameter of 10 mm are recovered. The germ diameter is suitably 4 mm. In order to maintain the continuous drying and granulation process in the vortex chamber 2, it is necessary to return 1.5 mass% of the granulate produced as germ to the vortex layer at a solids content in the suspension of 12 mass%. With relay coupling, it is achieved that the amount of granule needed for the germ development in the central outlet tube 3 is supplied by means of the distributor means 5 to a disintegrating element mounted in the outlet tube 3 and that the disintegrated granulate is returned as germ to the vortex layer with the outlet air. By this method, it can be achieved that the amount of dust in a cyclone 15 can be lowered by 15% as the too much decomposed granules are mostly trapped in the vortex layer and contribute to the formation of granules.

De til den videre anvendelse beregnede granulater ledes bort ved hjælp af det centrale udtagsrør 3 via en parallelstrækning 4. Ved hjælp af fordelerorganet 5, som ligesom drevet for sønderdeleren 1 reguleres ved 20 hjælp af et styresystem, kan granulatstrømmen ledes i den ønskede retning i udtagsrøret 3.The granules intended for further use are discharged by means of the central outlet tube 3 via a parallel section 4. By means of the distributor means 5, which, like the drive for the splitter 1, is controlled by a control system, the granulate flow can be directed in the desired direction in the outlet tube. third

2525

Claims (5)

1. Fremgangsmåde til tilberedning af kim, som sammen med et kohæsionsfattigt stof tørres i en kontinuerligt arbejdende hvirvel!agsgra-nulattørrer til granulater, kendetegnet ved, at 5 a) granulaterne, som har nået en bestemt diameter og dermed en bestemt masse, udtages fra hvirvel kammereret (2) under tyngdekraftbetingelser i modstrømning mod den udgangsluft, som tilføres til udtagsrøret (3) nedenfra, b) den til kim-dannelsen nødvendige mængde granulat sønderdeles til 10 kim, medens resten af granulatet bortledes uden sønderdeling, c) de af granulatet fremstillede kim atter føres med udgangsluften tilbage til hvirvel laget, hvor de danner nye kim til granulatdannelsen.A process for preparing germs, which, together with a cohesion-poor substance, is dried in a continuously operating vortex granule dryer for granules, characterized in that the a) granules which have reached a certain diameter and thus a certain mass are taken out from vortex chambered (2) under gravity conditions in counterflow to the outlet air supplied to the outlet tube (3) from below; b) the amount of granulate needed for germination is decomposed to 10 germs, while the remainder of the granulate is discharged without decomposition; produced germs are returned to the vortex layer with the exit air, where they form new germs for granulation formation. 2. Fremgangsmåde til tilberedning af kim ifølge krav 1, kendetegnet ved, at den i det centrale udtagsrør (3) strømmende luft indstilles efter størrelsen af de udtagne granulater.Method for preparing germs according to claim 1, characterized in that the air flowing in the central outlet tube (3) is adjusted according to the size of the granules taken out. 3. Apparat til udøvelse af fremgangsmåden til tilberedning af kim ifølge krav 1 og 2, kendetegnet ved, at hvirvel lagskammeret 20 (2) er forbundet med et sønderdelingsrum, som er anbragt neden under hvirvel!agskammeret (2), ved hjælp af en granulatudtagningskanal (3), som fortrinsvis er luftgennemstrømmet, og som ud for sønderdelingsrummet er udformet som en parallelstrækning (4) og nedenfor sønderdelingsrummet står i forbindelse med dette, hvorhos der mellem denne forbin-25 del se og forbindelsesstedet mellem hvirvellagskammeret (2) og udtagskanalen (3), er anbragt en sønderdel er, og at der i den centrale granulatudtagningskanal (3) ved forgreningen til parallelstrækningen (4) er anbragt en fordelerklap (5) med henblik på fastsættelse af den til kimdannelsen nødvendige mængde granulat.Apparatus for carrying out the method of preparing germs according to claims 1 and 2, characterized in that the vortex layer chamber 20 (2) is connected to a disintegrating space arranged below the vortex chamber (2) by means of a granulate withdrawal channel. (3), which is preferably air flowed, and which is configured in parallel to the disintegration space as a parallel stretch (4) and below the disintegration space, which between this connection and the point of connection between the fluidized bed chamber (2) and the outlet duct ( 3), a disintegrator is disposed and a distributor flap (5) is provided in the central granule withdrawal channel (3) at the branch to the parallel section (4) to determine the amount of granulation required for the nucleation. 4. Apparat til tilberedning af kim ifølge krav 3, kendetegne t ved, at sønderdeleren (1) fortrinsvis består af to valser, som roterer mod hinanden i retning mod udtagskanalen (3) og er anbragt parallelt med hinanden på tværs af hvirvel!agskammerets (2) længdeakse,Apparatus for preparing germs according to claim 3, characterized in that the splitter (1) preferably consists of two rollers which rotate towards each other in the direction of the outlet channel (3) and are arranged parallel to one another across the vortex chamber ( 2) longitudinal axis; - 5 - DK 161003 B hvorhos spalten mellem valserne er variabel i størrelsen ved forskydning af én eller begge valser.- 5 - DK 161003 B wherein the gap between the rollers is variable in size by displacing one or both rollers.
DK73684A 1983-05-30 1984-02-17 PROCEDURE AND APPARATUS FOR CHEMICAL PREPARATION BY WHEEL LAYER DK161003C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD25137283 1983-05-30
DD25137283A DD215379A1 (en) 1983-05-30 1983-05-30 PROCESS AND DEVICE FOR PREPARING GERMES FOR SWIVEL LAYERED GRANULAR DRYING

Publications (4)

Publication Number Publication Date
DK73684D0 DK73684D0 (en) 1984-02-17
DK73684A DK73684A (en) 1984-12-01
DK161003B true DK161003B (en) 1991-05-13
DK161003C DK161003C (en) 1991-11-04

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DK73684A DK161003C (en) 1983-05-30 1984-02-17 PROCEDURE AND APPARATUS FOR CHEMICAL PREPARATION BY WHEEL LAYER

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AT (1) AT387278B (en)
DD (1) DD215379A1 (en)
DE (1) DE3400398A1 (en)
DK (1) DK161003C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3006132A (en) * 1956-09-29 1961-10-31 Lely Nv C Van Der Devices for laterally displacing material lying on the ground
US2955407A (en) * 1956-11-30 1960-10-11 Lely Nv C Van Der Side delivery raking device
EP0441092A1 (en) * 1990-02-08 1991-08-14 Niro Holding A/S A method and apparatus for heat treating a particulate product

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH558674A (en) * 1971-07-01 1975-02-14 Ciba Geigy Ag METHOD AND DEVICE FOR MANUFACTURING GRANULES.
DD137005A1 (en) * 1978-06-16 1979-08-08 Horst Bergmann DEVICE FOR REGULATING THE DRYING PROCESS IN SWIVEL LAYER DRYERS
DD140005A1 (en) * 1978-11-30 1980-02-06 Horst Bergmann ANNEX FOR THE GRANULAR DRYING OF BIOMASSES AND ELEMENTS

Also Published As

Publication number Publication date
ATA7784A (en) 1988-05-15
DE3400398C2 (en) 1991-10-02
DD215379A1 (en) 1984-11-07
AT387278B (en) 1988-12-27
DK161003C (en) 1991-11-04
DE3400398A1 (en) 1984-12-06
DK73684D0 (en) 1984-02-17
DK73684A (en) 1984-12-01

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