Patent GB-1112553-A (GB)
Title: A process for producing crystallized granules
Inventor: NIIMI MASAHIRO
IPC: A23L27/30
Filed: 1965-06-28
Abstract: Crystalline granules of a crystalloid are prepared by producing an aqueous slurry consisting essentially of crystals of the crystalloid and saturated aqueous solution of the crystalloid, subjecting the aqueous slurry to a spray-drying operation, the conditions being such that crystalline granules are formed, which granules are composed of agglomerated crystals, the interstices of which granules contain supersaturated aqueous solution of the crystalloid, and subsequently gradually evaporating the free water content of each granule. According to an Example (1), a starch hydrolysate liquor having a dextrose equivalent of 97 is evaporated to a density of Brix 97.  The resulting concentrate is allowed to crystallize over a period of about 8 hours by slow agitation in a crystallizer at 20 DEG C. into which it is preferable to add 0.5% by weight of dextrose monohydrate crystals for seeding.  The slurry thus obtained is composed of relatively small size crystals and saturated solution, and is sufficiently fluid and stable to be pumped to a spray-drying chamber. The slurry is spray-dried into small droplets or particles which are allowed to drop through a current of air at a temperature below 50 DEG C.  The spray-dried granules have an appearance resembling melting snow flakes and are found to contain 65% of dextrose monohydrate crystals and 35% of solution.  When the product has been aged in a stream of air for 3-5 hours, it is completely crystallized and is sufficiently free flowing to be transported pneumatically. For the spray-drying, a chamber of specified size may be equipped with an atomizing device 350 mm. in diameter, capable of rotating at 6,500 r.p.m. to spray the slurry at a rate of 1,000 Kg./hr.  The ageing and drying may take place in a rotary conveyer, on a belt conveyer, or in pneumatic equipment in which the temperature, relative humidity and velocity of the air stream are controlled. Further examples are directed to the production of crystalline granules of dextrose including small proportions (specified) of (3) sodium cyclohexylsulphamate, (4) organic acid such as citric, succinic and tartaric acids, (6) concentrated fruit or vegetable juices, coffee extracts or cocoa powder, as exemplified by an "instant" orange juice prepared from glucose slurry, concentrated orange juice, sodium cyclohexylsulphamate, soluble saccharine, orange oil and citric acid; and of (7) sodium glutamate, (8) sodium glutamate with inosinic acid, (9) sucrose, (10) homogeneous mixed spheres containing sucrose, concentrated apple juice, orange oil and permitted yellow colour, (11) urea, and (12) sodium cyclohexylsulphamate.ALSO:Crystalline granules of a crystalloid are prepared by producing an aqueous slurry consisting essentially of crystals of the crystalloid and saturated aqueous solution of the crystalloid, subjecting the aqueous slurry to a spraydrying operation, the conditions being such that crystalline granules are formed, which granules are composed of agglomerated crystals, the interstices of which granules contain supersaturated aqueous solution of the crystalloid, and subsequently gradually evaporating the free water content of each granule.  According to an example (1), a starch hydrolysate liquor having a dextrose equivalent of 97 is evaporated to a density of Brix 97.  The resulting concentrate is allowed to crystallize over a period of about 8 hours by slow agitation in a crystallizer at 20 DEG  C. into which it is preferable to add 0.5% by weight of dextrose monohydrate crystals for seeding.  The slurry thus obtained is composed of relatively small size crystals and saturated solution, and is sufficiently fluid and stable to be pumped to a spray-drying chamber.  The slurry is spray-dried into small droplets or particles which are allowed to drop through a current of air at a temperature below 50 DEG  C.  The spray-dried granules have an appearance resembling melting snow flakes and are found to contain 65% of dextrose monohydrate crystals and 35% of solution. When the product has been aged in a stream of air for 3-5 hours, it is completely crystallized and is sufficiently free flowing to be transported pneumatically.  For the spray-drying, a chamber of specified size may be equipped with an atomizing device 350 mm. in diameter, capable of rotating at 6,500 r.p.m., to spray the slurry at a rate of 1,000 kg./hr. The ageing and drying may take place in a rotary conveyer, on a belt conveyer, or in pneumatic equipment in which the temperature, relative humidity and velocity of the air stream are controlled.  Further examples are directed to the production of crystalline granules of dextrose, including small proportions (specified) of (3) sodium cyclohexyl-sulphamate, (4) organic acid such as citric, succinic and tartaric acids, (6) concentrated fruit or vegetable juices, coffee extracts or cocoa powder, as exemplified by an "instant orange juice prepared from glucose slurry, concentrated orange juice, sodium cyclohexylsulphamate, soluble saccharine, orange oil and citric acid; and of (7) sodium glutamate, (8) sodium glutamate with inosinic acid, (9) sucrose, (10) homogeneous mixed spheres containing sucrose, concentrated apple juice, orange oil and permitted yellow colour, (11) urea, and (12) sodium cyclohexylsulphamate.ALSO:Crystalline granules of a crystalloid are prepared by producing an aqueous slurry consisting essentially of crystals of the crystalloid and saturated aqueous solution of the crystalloid, subjecting the aqueous slurry to a spray-drying operation, the conditions being such that crystalline granules are formed, which granules are composed of agglomerated crystals, the interstices of which granules contain supersaturated aqueous solution of the crystalloid, and subsequently gradually evaporating the free water content of each granule.  According to an example (1), a starch hydrolysate liquor having a dextrose equivalent of 97 is evaporated to a density of Brix 97.  The resulting concentrate is allowed to crystallize over a period of about 8 hours by slow agitation in a crystallizer 20 DEG C. into which it is preferable to add 0.5% by weight of dextrose monohydrate crystals for seeding. The slurry thus obtained is composed of relatively small size crystals and saturated solution, and is sufficiently fluid and stable to be pumped to a spray-drying chamber.  The slurry is spray-dried into small droplets or particles which are allowed to drop through a current of air at a temperature below 50 DEG C.  The spray-dried granules have an appearance resembling melting snow flakes and are found to contain 65% of dextrose monohydrate crystals and 35% of solution.  When the product has been aged in a stream of air for 3-5 hours, it is completely crystallized and is sufficiently free flowing to be transported pneumatically.  For the spray-drying, a chamber of specified size may be equipped with an atomizing device 350 mm. in diameter, capable of rotating at 6,500 r.p.m., to spray the slurry at a rate of 1,000 Kg./hr. The ageing and drying may take place in a rotary conveyer, on a belt conveyer, or in pneumatic equipment in which the temperature, relative humidity and velocity of the air stream are controlled. Further examples are directed to the production of crystalline granules of dextrose including small proportions (specified) of (3) sodium cyclohexylsulphamate, (4) organic acid such as citric, succinic and tartaric acids, (6) concentrated fruit or vegetable juices, coffee extracts or cocoa powder, as exemplified by an "instant" orange juice prepared from glucose slurry, concentrated orange juice, sodium cyclohexylsulphamate, soluble saccharine, orange oil and citric acid; and of (7) sodium glutamate, (8) sodium glutamate with inosinic acid, (9) sucrose, (10) homogeneous mixed spheres containing sucrose, concentrated apple juice, orange oil and permitted yellow colour, (11) urea, and (12) sodium cyclohexylsulphamate.ALSO:Crystalline granules of a crystalloid are prepared by producing an aqueous slurry consisting essentially of crystals of the crystalloid and saturated aqueous solution of the crysalloid, subjecting the aqueous slurry to a spray-drying operation, the conditions being such that crystalline granules are formed, which granules are composed of agglomerated crystals, the interstices of which granules contain supersaturated aqueous solution of the crysalloid, and subsequently gradually evaporating the free water content of each granule.  According to an example (1), a starch hydrolysate liquor having a dextrose equivalent of 97 is evaporated to a density of Brix 97.  The resulting concentrate is allowed to crystallize over a period of about 8 hours by slow agitation in a crystallizer at 20 DEG C into which it is preferable to add 0.5% by weight of dextrose monohydrate crystals for seeding.  The slurry thus obtained is composed of relatively small size crystals and saturated solution, and is sufficiently fluid and stable to be pumped to a spray-drying chamber.  The slurry is spray-dried into small droplets or particles which are allowed to drop through a current of air at a temperature below 50 DEG C.  The spray-dried granules have an appearance resembling melting snow flakes and are found to contain 65% of dextrose monohydrate crystals and 35% of solution.  When the product has been aged in a stream of air for 3-5 hours, it is completely crystallized and is sufficiently free flowing to be transported pneumatically.  For the spray-drying, a chamber of specified size may be equipped with an atomizing device 350 mm. in diameter, capable of rotating at 6,500 r.p.m., to spray the slurry at a rate of 1,000 Kg./hr.  The ageing and drying may take place in a rotary conveyer, on a belt conveyer, or in pneumatic equipment in which the temperature, relative humidity and velocity of the air stream are controlled. Further examples a