SU1454858A1 - Method of producing sugar - Google Patents

Abstract

The invention relates to sugar production and can be used in factories in the processing of sugar-containing raw materials. The purpose of the invention 1. . The invention relates to sugar production and can be used in factories in the processing of sugar-containing raw materials. The purpose of the invention is to increase the sugar yield. The drawing shows a flow chart that implements the proposed method. The method is carried out as follows. Purifying the diffusion juice with filtering the juice. II satura is an increase in sugar yield. The method of obtaining sugar includes cleaning the diffusion juice with filtering the juice by saturation II, evaporating the juice, boiling the crucible 1 crystallization, centrifuging it to obtain white sugar, first and second edemas, the first swelling is diluted to 40-45% CB and subjected to chromatography separation by passing through a column filled with cation-exchange resin in Ca form to obtain a product with a purity of at least 80% and molasses fractions. In the established mode, 40-60% of the product fraction is taken and recirculated to the column before passing the first puff at a flow rate of 0.1-0.2 volume of solution per 1 volume of cationite per hour, and the rest of the product fraction is mixed with saturation juice II before filtering. 1 dw., 3 tab. 10, evaporation of the juice, boiling of the massecuite, its centrifugation to obtain white sugar, the first and second edemas. The first effluent is diluted to 40-45% from the ear material and subjected to the chromatographic separation by passing it through a column filled with a cation exchange resin. Loi in Ca to obtain a product with DB of at least 80% and molasses fractions, while in steady state 40-60% of the product fraction is taken and recycled to the column (L 4: SL СХ) СП 00

Description

1454858

before passing through the first otta-ka with a flow rate of 0.1-0.2 volume of solution per 1 volume of cation exchanger per hour, the remaining amount of the product fraction is mixed with juice of saturation II before filtering. Then, according to a known technological scheme, a syrup is obtained, which is decolorized with active granulated charcoal or decolorizing anionite and sent to cook the sugar massecuite.

The molasses fraction obtained during the chromatographic separation of the first mother liquor with Yes 20-30 condenses to 60-65% solids and is removed from the plant in the form of residual molasses.

Experiments have shown that when recycling is less than 40% and the transmission rate is more than 0.2 volume / volume per hour, a decrease in the benignity of the main part of the product fraction is observed, in the case of recycling more than 60% and

ten

The quality of PF decreases its benignity and the work with one crystallization of sugar is not ensured; if a smaller amount is selected, the losses of sugar with molasses increase.

On the diffusion installation 1 of the beet chips get a diffusion juice. Juice is cleaned from a part of non-sugars at cleaning station 2 with filtration of juice II of carbonation. In this case, the unfiltered juice of the second saturation is mixed with a product fraction containing at least 80% dB, 15 the mixture is filtered and evaporated on an evaporator unit 3 to a syrup concentration of 60-65% CB. The syrup is decolorized with an adsorbent or decolorized anion exchange resin and the precipitate is filtered on filters 4. In vacuum apparatus 5 of the bleached filtered syrup, the sugar massecuite is boiled under vacuum. Crystalline sugar massecuite is separated from the mother liquor20

transmission speeds of less than 0.1 vol. 25 and spaced in mountain / volume v / v centrifuges for 1 hour; a slight increase in benignity is noted and the productivity of the chromatographic column decreases.

whose water. Get wet white sugar first and second edema. Sugar is dried and prepared

,) product, Second output returned to

The method of obtaining sugar with chromate 30 boiling over mash. The first effluent by a graphical separation of the first one is ground in the broom 6 of the recirculation and the recycling of part of the product fraction to the chromatographic separation provides an increase in the fractionation (tail parts of the product fraction with low sugar content) and hot water or condensate.

the progress of the sugar and the work of the sugar factory 40-45% of dry matter and filtered

yes on a single product crystallization process scheme. Digestion of massecuites of the intermediate and final products, as well as crystallization of the massecuite of the latter product in the crystallizer mixers and centrifugation of the specified massecuites, are excluded from the known method for producing sugar and the brown sugar according to the proposed method is not obtained. Due to this, the total duration of sugar crystallization is reduced by 10-15 times.

When working on the proposed method, only massecuite is boiled down. 1

on filters 7.

In the chromatographic column 8 first serves the return part of the product fraction from collection 9,

40 heated to 70-90 ° С, at a rate of 0.1-0.2 volume of solution per volume of cationite per hour, and then a hot solution of the first mother liquor. Next, from box 10, hot (70-90 C)

45 condensate

At the exit from the chromatographic column, the product fraction is collected and sent to collectors 9 and 11, and to the collection 12 - the recirculation fraction

 i y .-- - .-., j, njrirv 1 / - v-4J, i --- ----- -

crystallization, the duration of the crystal gQ and in the collection 13 is the residual fraction

 ..Am l "h. that OTPGLGM YAGTTYAT YATb.GCH; .т-гттт i ОЧТГТТО / Т ТЗ Т7 СТ Э Т

which in a vacuum apparatus is 195 minutes, and according to the method of the prototype, the duration of crystallization is 3095 minutes with a three-product and 2445 minutes with a two-product scheme,

Extraction of the product fraction with db less than 80% of sugar is due to the fact that the selection of a larger kolimelassy. The selection of fractions is carried out automatically. From collector 13, the residual molasses fraction is sent to an evaporator unit, 55 is concentrated and removed from production as an animal-friendly product and for technical needs. From collection 11, the product fraction is sent for purification,

The quality of PF decreases its benignity and the work with one crystallization of sugar is not ensured; if a smaller amount is selected, the losses of sugar with molasses increase.

On the diffusion installation 1 of the beet chips get a diffusion juice. Juice is cleaned from a part of non-sugars at cleaning station 2 with filtration of juice II of carbonation. In this case, the unfiltered juice of the second saturation is mixed with a product fraction containing at least 80% dB, 5 the mixture is filtered and evaporated on an evaporator unit 3 to a syrup concentration of 60-65% CB. The syrup is decolorized with an adsorbent or decolorized anion exchange resin and the precipitate is filtered on filters 4. In vacuum apparatus 5 of the bleached filtered syrup, the sugar massecuite is boiled under vacuum. Crystalline sugar massecuite is separated from mother liquor.

boiling massecuite. The first effluent is diluted in the recycling baffle 6.

fraction (tail parts of the product fraction with low sugar content) and hot water or condensate

dd 40-45% solids and filtered

on filters 7.

In the chromatographic column 8 first serves the return part of the product fraction from collection 9,

40 heated to 70-90 ° С, at a rate of 0.1-0.2 volume of solution per volume of cationite per hour, and then a hot solution of the first mother liquor. Next, from the collection 10 serves hot (70-90 C)

45 condensate

At the exit from the chromatographic column, the product fraction is collected and sent to collections 9 and 11, and to the collection 12, the recycling fraction

 njrirv 1 / - v-4J, i --- ----- -

gQ and in collection 13 - residual fraction

gQ and in collection 13 - residual fraction

.GH; .т-гттт i ОЧТГТТО / Т ТЗ Т7 СТ Э Т

molasses The selection of fractions is carried out automatically. From collector 13, the residual molasses fraction is sent to an evaporator unit, 55 is concentrated and removed from production as an animal-friendly product and for technical needs. From collection 11, the product fraction is sent for purification,

where it is mixed with unfiltered juice of the second saturation. The mixture is filtered and concentrated on an evaporator 3. Next, the syrup is decolorized and the massecuite is boiled in the previously described order. The recycle fraction from the chromatographic separation of the first mother liquor is used to dilute the first mother liquor in collector 6 with pre-filters 7.

The whole process of obtaining sugar by the proposed method is carried out continuously. The purity of the sugar-containing product, recirculation, and residual fractions is easily controlled by changing in the automation system the setting of boundary benignities of the selected fractions from the chromatographic column.

Example 1. From sugar beet on the proposed technological scheme receive granulated sugar. The second swelling is taken to the last swap in the vacuum crystallization apparatus 1. The first effluent is diluted to 42.3% CB, 34.2% Sac. ,9%. The solution is filtered through the washed

perlite layer on the filter base.

The cation exchanger KU-2-4 in calcium form is placed in the chromatographic column, which operates during the chromatographic separation of the first mother liquor in the mode with lagging electrolyte. At the beginning, 5.5 l of the product fraction of the past cycle, containing 14% DM and 13.4% Sakh, Db 95.7%, are fed into the column. Behind it, 3 l of the first mother liquor solution are passed through, and then hot condensate is fed at rates of 0.3, 0.2, 0.1, 0.05 v / v-h, respectively (see table 1). At the exit from the column, 12 L of product fraction, 2 L fraction for dilution of the first mother liquor, 2 L are obtained.

fraction of residual molasses. At the exit from the column, equal portions of a 1 liter solution are taken in succession. Carry out continuous cyclic chromatography of the first mother liquor with a return of 30, 40, 50, 60 and 70%.

product fraction. In the selected portions at steady state, the content of dry substances (CB), sugar (Sakh) and purity are determined.

(Db) one

Table

I

thirty

8.6 9.5 90.5 10.0 10.8 92.6 10.3 11.2 91.8 9.5 Proportions of the solution of each experiment, having a DB of more than 80%, are combined and a product fraction is obtained that has a DB of less than 30% - a fraction of residual molasses is obtained, having a DB of 79 to 31% - a fraction is obtained for diluting the first mother liquor before chromatography. From 3 l of the solution of the first mother liquor and 4.5 l of the product fraction of the past cycle, 9 l pro 11, 0 86.0 are obtained

duct fraction, the composition of which, depending on the amount of return of the product fraction and transmission rate, is presented in Table 1, 4 l of the fraction of residual molasses and 3 l

fractions to dilute the first mother liquor. 4.5 liters of product fraction are returned for the next cycle.

The resulting product fraction before crystallization is directed to

7.14

evaporation together with the juice of the main technological stream of sugar production yields a syrup.

Example 2, Sugar is obtained from sugar beet. The second swelling is taken to the last swap in the crystallization vacuum apparatus.

The first swell with DB 81.2, containing 80% dry matter (CB), is diluted with a recirculation fraction and hot condensate to 35, 40, 45–50% CB. The solutions are filtered.

3 liters of the filtered solution is heated to, carefully poured into a chromatographic column with cation exchanger KU-2-4 in the Ca form and passed at a rate of 0.2 v / v-hr, at the moment when the level of the solution coincides with the level of cation exchanger , 12.5 liters of hot (75 ° C) condensate from the evaporator are fed to the colony and continue to flow through it at a given speed.

At the exit from the column, equal portions of the solution are taken each in 1 liter and their purity (DB) is determined. Equal volumes of the solution of each experiment, having a DB of 80% or more, are combined together in product fractions and analyzed.

The results of chromatographic separation of solutions of the first mother liquor of various concentrations are given, as shown in Table 2.

Table 2

Froze The first sweep containing 80% solids is diluted with a recycle fraction and hot condensate up to 42.3% CB and 34.2% Sac, DB 80.9% and filtered through a layer of perlite.

15

4858

 20

eight

In the chromatographic column with i-cation exchanger KU-2-4 in the calcium form, initially, 5.5 liters of the product fraction containing 14% CB and 13.4% Sac., DB 95.7% are fed, followed by 3 liters heated to 75 From the solution of the first mother liquor, and then hot condensate is supplied. Chromatographic swelling is performed at 10 speeds of 0.3; 0.2; 0.1; 0.05 v / v-h In each experiment, at the exit from the column, a product fraction is obtained, the composition of which is characterized by the parameters given in Table 3.

Table3

Example 4 Akhar-sand is obtained from a sugar beet about the technological scheme. The second swell is taken to boil the massecuite in a crystallization vacuum apparatus 1. The first sweep with DB of 80.9% is diluted to 42.3% of CB, before chromatographic separation is carefully filtered through a layer of perlite applied to the filter,

In a chromatographic column filled with cation exchanger KU-2-4 in calcium form, first, 5.5 liters of the product fraction of the previous cycle with DB 95.7% and 14% DM content are fed. Then, 3 l of the filtered solution of the first mother liquor is passed, after which, for chromatographic separation, it is supplied with hot condensate at a rate of 0.2 v / v. At the exit from the column, 12 l of product fraction with DB of 94.4% containing 13.4% is obtained Sakh and 14.2% CB, 2 l fractions for diluting the first puff with 9.8% Sac and 10.9% CB, 2 l residual fraction

9

molasses, containing 1.75% Sakh and 5.9% ST.

The resulting product fraction was sent & into the unfiltered juice 11 of the saturation of the main process stream to produce sugar.

The yield of sugar from the first mother liquor to the food fraction with a pass of 1 petrol with a speed of 0.2 v / v-h was 94.7%, 5.3% to the mass of sugar of the first mother liquor passed into the residual molasses.

When processing beets of average quality and high quality of syrup 91.8%, the sugar content in molasses of the proposed method is 0.4% by weight of beets

The method allows to obtain sugar with a single crystallization according to a single-production technological scheme, which excludes capital expenditures on equipment for boiling and fugging intermediate and last massecuite eggs, crystallizing the last massecuite during cooling, refining and klerovanie yellow sugars.

Sy / ryo

Editor N.Kishtulinets

Compiled by A. Gavrilov Tehred M. Khodanych

Order 7412/30

Circulation 313

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

Claims (1)

58 Formula of the invention. A method of obtaining sugar, including cleaning the diffusion juice with filtering juice II carbonation, evaporation of juice, cooking crucible 1 crystallization, centrifuging it to obtain white sugar, first and second edemas, characterized in that, in order to increase the sugar yield, the first sweep is diluted to 40-45% solids and subjected to chromatographic separation by passing through a column filled with cation-exchange resin in Ca form to obtain a product with a DB of at least 80% and molasses fractions, while 40-60% of the product fraction is taken in the steady state and recirculated in the column before pro- maternal flow with a flow rate of 0.1-0.2 volume of solution per volume of cation exchanger per hour, and the rest of the product fraction is mixed with carbonation juice II before filtering. .but -but chelossa d Corrector With Shekmar Subscription