JP3322766B2 - Method for producing granulated brown sugar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for producing granular brown sugar .

[0002]

2. Description of the Related Art Conventional sugars such as brown sugar contain natural useful trace components such as minerals and have a good taste. On the other hand, they have a characteristic viscosity of molasses, so they are sticky. slightly soluble in water Te, there was a difficulty in ease of use as a raw material.

[0003] In particular, when used as a raw material for the food industry, it is necessary to remove honey sugar by hand, which hinders automation of the working process.

[0004]

OBJECTS OF THE INVENTION It is an object of the present invention to provide granular brown sugar which has good flowability, is not sticky and is easily soluble in water.

[0005]

Means and embodiments for carrying out the present invention are as follows.

[0006] <Unit> brown sugar is molasses sugar coarsely pulverized, put powdered brown sugar having uniform particle size below a certain size by the rough sieve granulator, the powder granulating dryer The powdered brown sugar is suspended , heated and dried, and granulated while spraying water on the brown sugar to adjust so as to keep the initial moisture constant.

<Embodiment 1> The initial water content of powdered brown sugar in the granulating dryer in the above means is adjusted to 3 to 5%.

<Embodiment 2> The heating and drying in the above means is performed by blowing hot air of 80 to 120 ° C and heating the powdered brown sugar to 50 to 70 ° C while floating .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific examples of producing granular brown sugar by the production method according to the present invention will be described in the order of production steps with reference to the accompanying drawings. FIG. 1 is a flow chart showing the production process of granulated brown sugar. In the figure, the left column (S1 to S7) is a process for obtaining powdered brown sugar from raw sugar cane, and the right column (S8 to S12) is a powdered black. Fig. 2 shows a process of obtaining granular brown sugar from sugar.

First, sugar cane as a raw material is finely cut, and sugar juice is squeezed out with a squeeze roller (S1). The sugar juice obtained in the pressing step is heated (S2) and mixed with lime milk to precipitate and separate impurities in the sugar juice to obtain a clear liquid (S2).
3).

The clarified liquid obtained in the cleaning step (S3) is placed in a vacuum evaporator to evaporate excess water and concentrated (S4), and boiled down in an oven pan (S5). The concentrated solution obtained by boiling is put into a stirring and cooling machine to precipitate sugar crystals (S6), and it is sieved through a coarse sieve to remove large lumps (S7) to obtain powdered brown sugar, which is a bee sugar .

Next, the step of converting the powdered brown sugar obtained in the above steps (S1 to S7) into granular brown sugar by the method of the present invention will be described.

[0013] Brown sugar contains a large number of large and small sugar lumps called bees. Since the sugar lumps have high tackiness and are difficult to separate and pulverize only by drying, brown sugar is coarsely pulverized in advance (S8) and coarsely sieved to uniform the particle size to about 8 mm or less (S9). In addition,
The lump of brown sugar having a large particle size left in the coarse sieve (S9) is returned to the coarse grinding step (S8) and ground again.

The powdered brown sugar having a uniform particle size in the coarse sieving step (S9) is put into a fluidized granulating dryer described below and fluidized and granulated and dried (S10). In this fluidized granulation drying step, first flour
The powdered brown sugar is heated to 50 to 70 ° C. while floating by blowing hot air of 80 to 120 ° C. on the brown sugar.
Increase the adhesiveness of the honey film on the crystal surface of powdered brown sugar,
Due to this adhesiveness, the crystals are adhesively bonded to each other to make the powdery brown sugar into granules.

At this time, if the water content is too low or too high, the granules will not grow sufficiently. Therefore, water is sprayed on the powdered brown sugar in the dryer to keep the moisture constant at 3-5%. adjust.

After the granules have sufficiently grown, the spraying of water is stopped, and hot air is further blown to heat and dry (up to 110 ° C.) until the water content becomes 1% or less, thereby stabilizing the granules.
Next, it is cooled to about room temperature by blowing cold air.

The brown sugar granulated in the fluidized granulation and drying step (S10) is sieved with a sieve of about 20 to 24 mesh (S11). Note that the granules that have grown to a predetermined particle size or more are separated in this sieving step (S11), and the granulation step (S8
In A), the mixture is again put into a fluidized-granulation dryer together with the coarsely sieved powdered brown sugar and granulated.

[0018] The granular brown sugar having a uniform particle size in the sieving step (S11) is passed through a strong magnet lattice to remove foreign substances made of a magnetic material such as iron pieces (S12).
The product is granulated brown sugar.

Next, an example of the configuration of the fluidized granulation dryer used in the fluidized granulation drying step (S10) will be described with reference to FIG. In the drawing, reference numeral 1 denotes a granulating dryer, 2 denotes a supply port of powdered brown sugar, 3 denotes an outlet of granular brown sugar as a product, 4 denotes a supply port of hot air for drying and cool air for cooling, and 5 denotes the same temperature. Air and cold air outlets, 6 is a water supply pipe for spraying, 7 is an air deck made of a perforated plate, and 8 is a sugar dust collecting device.

The air deck 7 is provided with a large number of ventilation holes, and the holes are directional so that hot air for drying or cold air for cooling supplied from below is blown obliquely upward along the inner wall of the granulation dryer. The hot air or the cold air that has passed through the holes of the air deck 7 spirally rises in the dryer.

When the powdered brown sugar is put into the dryer 1 through the raw material supply port 2, it is blown up by the warm air blown out from the hole of the air deck 7 and heated while floating .

At this time, the water content of the powdered sugar is kept constant by the water sprayed from the nozzle of the water supply pipe 6, and the viscosity of the nectar film on the crystal surface of the powdered sugar is increased by the heat of the warm air. The crystals are adhesively bonded and granulated.

The granulated brown sugar is further dried by heating with hot air, then blown up with cold air and cooled to about room temperature.

The warm air for drying and the cool air for cooling pass through a sugar dust collecting device 8 provided in the upper part of the dryer 1, and are discharged from the exhaust port 5. At this time, sugar dust (fine powder of brown sugar) in the hot air or the cold air is collected by the collecting device 8.

The analytical test results of the granulated brown sugar obtained by the above method are shown in Table 1 below.

[0026]

[Table 1] From the above analytical test results, it can be seen that the granular brown sugar obtained by the above-mentioned method is rich in minerals from ash to magnesium shown in Table 1.

In the above embodiment, a fluidized granulation dryer is used in the granulation and drying step, but a vacuum rotary dryer may be used instead.

[0028]

The granular brown sugar obtained by the present invention described above.
It has the following advantages. While granules to have been brown sugar remains leaving a useful minor components, such as molasses sugars original minerals, greasy and good fluidity, and since has excellent solubility, ease of use as a food material but it improved, also,
As a raw material for the food industry, it can be used widely without hindering the automation of work processes.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a manufacturing process of the method of the present invention.

FIG. 2 is a cross-sectional view showing an example of a granulation dryer used in the method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Granulation dryer 2 Raw material supply port 3 Product outlet 4 Hot air supply port 5 Exhaust port 6 Water supply pipe 7 Air deck 8 Sugar dust collection device

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) C13F 3/00-5/00 JICST file (JOIS) JAFIC file (JOIS)

Claims (2)

(57) [Claims] [Claim 1] A mixture solid sugar serving brown sugar coarsely pulverized, put powdered brown sugar having uniform particle size below a certain size by the rough sieve granulator, powdery black granulation dryer Sprinkle water on the sugar and adjust the powdered brown sugar while adjusting it to keep the initial moisture at 3-5%.
A method for producing granulated brown sugar , which comprises causing the granulated sugar to float, heat dry, and granulate. 2. A powdery brown sugar which has been coarsely pulverized and whose particle size has been adjusted to a certain size or less by a coarse sieve is put into a granulating dryer,
Water is sprayed on the powdered brown sugar in a granulation dryer to obtain an initial moisture of 3 to
Play powdered brown sugar with warm air while adjusting to 5%.
Granulation by heating and drying at 50-70 ° C
A method for producing granular brown sugar .