RU2269575C2 - Method for sugar production - Google Patents

Abstract

FIELD: sugar refining industry.

SUBSTANCE: claimed method includes juice filtration from the first saturation, raw sugar liquoring with said filtered juice in liquoring blender. In liquoring process sodium hypochloride in amount of 0.05-0.10 % (based on raw sugar mass) and haydite powder in amount of 0.3-0.5 % (based on raw sugar mass) are introduced into blender. Then melt liquor is blended with filtered beet juice from the first saturation. Mixture is defecated, filtered, sulphitated, and filtered and purified mixture is boiled.

EFFECT: sugar containing solution of high effect, syrup obtained from mixture of raw sugar melt liquor and filtered juice from the first saturation of improved quality.

2 ex

Description

The invention relates to sugar production and can be used in the joint processing of sugar beets and raw cane sugar.

A known method of producing sugar, comprising filtering the juice of the first saturation, clairing the raw sugar with the filtered juice of the first saturation, mixing the obtained klerovka with the filtered juice of the first saturation, defecating the mixture, the second saturation, filtering, sulfitation, filtering, evaporation to syrup / Bugaenko I.F. , Cheap I.Yu. Processing of raw cane sugar together with beets. Sugar. - M., 2001, No. 3, C 21-22 /.

The disadvantage of this method is the incomplete removal of high molecular weight compounds from the cleaned mixture of sugar and raw juice of the first saturation.

The technical result of the proposed method is to reduce the content of macromolecular compounds in the mixture of raw sugar and juice of the first carbonation, increase the cleaning effect and improve the quality of the mixture of raw sugar and juice of the first carbonation.

To achieve this result, in the proposed method, filtering the juice of the first saturation, cloning the raw sugar with this filtered juice in a trowel mixer, then mixing the klerovka with the filtered juice of the first saturation, defecating the mixture, the second saturation, filtering, sulfitation, filtering and evaporating the purified mixture, in the process of clering, bleach is introduced into the mixer in an amount of 0.05-0.10% by weight of raw sugar and expanded clay powder in an amount of 0.3-0.5% by weight of raw sugar.

The method is as follows.

Filtered juice of the first saturation is added to the cling mixer to the raw cane sugar until the CB reaches 35-40%. In the mixer, bleach is introduced in an amount of 0.05-0.10% by weight of raw sugar and 0.3-0.5% finely dispersed expanded clay powder. Simultaneous clering and processing of clergy by bleach and expanded clay powder is carried out at a temperature of 85-90 ° C for 10-15 minutes. The sugar sweetening treated in this way is mixed with filtered juice of the first saturation, the mixture is heated to a temperature of 85-90 ° C, defecation is carried out 0.2-0.3% CaO to beet mass for 5-6 minutes, the second saturation to pH 9 , 0-9.2, filtration, sulfitation to a pH of 8.2-8.5, filtration, evaporation to syrup with a CB content of 60-65%.

The proposed method allows to increase the effect of removing non-sugars during the cleaning process of a mixture of raw sugar and juice of the first carbonation compared to the known method. This is because the high molecular weight compounds (IUDs) of the raw sugar decompose with the addition of bleach. Destruction products of IUDs and coloring substances of raw sugar are adsorbed on the introduced particles of expanded clay powder. Subsequent defecation and saturation allows more complete adsorption of sugar, to form a coarse sediment, which increases the filtration properties of the juice of the first saturation. This leads to the removal of a large number of different groups of non-sugars, an increase in the effect of defecation saturation, and an increase in the filtration properties of the juice of the first saturation. The use of bleach for cleaning can reduce the consumption of calcium oxide for defecation of the mixture before the second saturation. The use of bleach in an amount of less than 0.05% is not enough, because it is not possible to achieve maximum decomposition of the IUD, and when the consumption of bleach is more than 0.10%, costs increase significantly, which increases the cost of finished products. This also applies to the consumption of expanded clay powder. At a rate of less than 0.3%.

The process of adsorption of products of destruction of the IUD is not effective enough, which does not provide the necessary quality indicators of the purified mixture of sugar sugar and raw juice of the first carbonation. When the powder consumption is more than 0.5%, the efficiency of this process is negligible compared to the powder consumption indicated above. In this regard, an increase in the consumption of the latter above 0.5% is impractical.

Example 1. The process of sugar production by the proposed method. Raw cane sugar in an amount of 50 g is served in a trowel mixer and glued at a temperature of 87 ° C with the addition of 130 cm ^{3 of} filtered juice of the first saturation, 0.05 g of bleach and 0.2 g of fine expanded clay powder for 12 minutes at vigorous stirring. Treated in this way klerovka with a content of CB 37% is mixed with 1000 cm ^{3 of} filtered juice of the first saturation. A mixture of 0.25% CaO to the beet mass is defecated, heated to 90 ° C, kept for 5 minutes, saturated to pH 9.1, filtered and sulfonated to pH 8.2. After sulfitation, the mixture is filtered and concentrated to obtain a syrup with CB 60.2%. Qualitative indicators of syrup: purity (H) 93.1%, color 14.6 conventional units, the content of high molecular weight compounds (IUDs) 0.104%, the content of calcium salts 0.112%.

Example No. 2. The sugar production process by a known method: 50 g of raw cane sugar is glued to 37 cm ^{3 of} filtered juice of the first saturation with a CB of 13.0% and get clinging with a CB content of 62.8%. This klerovka is mixed with 1000 cm ^{3 of} filtered juice of the first saturation and heated to 90 ° C. A mixture of 0.25% CaO to the beet mass is defecated, kept under stirring for 7 minutes, carbonated to a pH of 9.1, filtered, sulphonated to a pH of 8.2, filtered and concentrated to obtain a syrup with a CB content of 60.2%. Qualitative indicators of syrup: purity (H) 92.8%, color 20.2 conventional units, the content of the IUD 0.213%, the content of calcium salts of 0.219%.

As follows from the above data, the proposed method makes it possible to increase the cleaning effect by 1.5-2.0%, reduce the content of IUDs and calcium salts by almost half, and lower the color of the syrup by 23-28%, which allows receive granulated sugar of standard quality.

Claims (1)

A method for producing sugar, comprising filtering the juice of the first saturation, cloning the raw sugar with this filtered juice in a trowel mixer, then mixing the klerovka with the filtered juice of the first saturation, defecating the mixture, second saturation, filtering, sulfitating, filtering and evaporating the purified mixture, characterized in that in the process of clering, bleach is introduced into the mixer in an amount of 0.05-0.10% by weight of raw sugar and expanded clay powder in an amount of 0.3-0.5% by weight of raw sugar.