RU2766009C1 - Method for processing guar seeds and installation for its implementation - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to methods for complex processing of guar seeds, can be used for production of guar gum in food, oil industry, as well as in agriculture. Method of processing guar seeds includes the following stages: cleaning seeds from the shell, which includes soaking guar seeds in an aqueous solution at temperature of 45 to 65 °C and subsequent separation of the seed shells; milling peeled guar seeds; separation of milled guar seeds into germs and milled endosperm; cooking of milled endosperm in aqueous solution at temperature from 65 to 85 °C; separation of guar gum from cooked milled endosperm. Guar seeds processing plant includes in-series connected device in which guar seeds are soaked at temperature from 45 to 65 °C, device providing separation of seed coats, a device for grinding of guar seeds cleaned from shells. Apparatus also includes a device for separating crushed guar seeds into embryos and crushed endosperm, a device in which crushed endosperm is boiled at temperature of 65 to 85 °C, and a device in which guar gum is separated.

EFFECT: invention increases output of guar gum, as well as simplifies separation of guar seeds into separate components.

40 cl, 2 dwg, 2 tbl

Description

The invention relates to methods for the complex processing of guar seeds, can be used to obtain guar gum in the food, oil industry, and also in agriculture.

Guar (lat. Cyamopsis tetragonoloba) is a species of herbaceous plants of the legume family (Fabaceae). The main product of guar seed processing is guar gum, which is widely used in various fields of technology: as a thickener in the food industry, used in the textile, pharmaceutical and cosmetic industries, and is also widely used in the oil drilling industry as a component of drilling fluids.

The main volume of production of guar gum and, accordingly, the processing of guar seeds is located in India (about 80%). In this case, the processing of seeds is carried out by step-by-step grinding and grinding of dry seeds.

A known method for producing guar gum powder (patent RU2403264, publ. 11/10/2010, IPC: C08B 37/14, C09K 8/20, C09K 8/60, C09K 8/68), which includes the steps of rolling non-husked guar fragments and grinding flaky non-husked fragments of guar to obtain a powder of guar gum, namely: the splitting of guar seeds with the separation of the germ, the peeling of the non-husked guar fragments with the separation of the husk (shells), the rolling of the husked guar fragments and the subsequent grinding with hot air.

Common features of the known and claimed methods are the stages of grinding (rolling) fragments of guar and separating the germ.

However, the known method refers to "dry" methods, as a result of which the loss of a dry powdered product will occur during peeling, rolling, and also to the fact that the products may contain traces of other processed products, in particular, in guar gum obtained from the endosperm, may contain traces of the embryo and husks (shells), which are firmly attached to the endosperm.

A technical solution is known - a method and device (patent RU2539207, publ. 01/20/2015, IPC: B02B 1/04), which simplifies the separation of shells (husks/peels) from the floury part (endosperm) of cereals (including legumes), according to which to separate the shells, the seeds are moistened by vibration treatment, which can also be provided with heating of the moistened seeds.

Common features of the known and claimed methods are moistening the seeds to separate the shell from the endosperm. Common features of the known and claimed plant is a device for moistening seeds.

However, in the known technical solution, heating is provided only due to the vibration effect and is optional. Such a solution will reduce the effectiveness of the softening of the shells for various types of crops, and may also lead to the formation of mucus during the processing of various crops, which will lead to a decrease in the yield of products due to processing losses.

To solve the problems of separating the endosperm from other parts of the guar seeds, various solutions are considered. In particular, a method is known (patent US3080355, publ. 03/05/1963, IPC: C08B 37/14), in which, in order to separate from the endosperm, guar flakes are heated at a temperature of 60-110 ° C in an aqueous alkaline solution for a period of time sufficient , at least for partial destruction of germs and husks, while the specified aqueous alkaline solution contains at least one salt in an amount of from 2% to 60% by weight of guar, which prevents the swelling of guar flakes.

A common feature of the known and claimed methods is the use of moisture and heat to separate guar fragments.

However, the processing conditions indicated in the known method are aimed at the destruction of germs and husks, which does not allow obtaining a product line, can lead to the destruction of guar polymer chains in the endosperm, which will lead to a decrease in the yield of guar gum, and require additional purification after using an alkaline solution. with salts, which complicates the technological scheme for processing guar seeds.

This method is chosen as a prototype.

The technical result is to increase the purity of the product, increase the yield of guar gum, as well as simplify the separation of guar seeds into individual components (shell, endosperm, germ) and reduce the amount of liquid used in processing.

The technical result is achieved by implementing a method for processing guar seeds, which includes the following steps: cleaning the seeds from the shell, which includes soaking the guar seeds in an aqueous solution at a temperature of 45 to 65°C and then separating the seed shells; grinding guar seeds, peeled; separation of crushed guar seeds into embryos and crushed endosperm; boiling the crushed endosperm in an aqueous solution at a temperature of 65 to 85°C; separation of guar gum from boiled crushed endosperm.

The achievement of the technical result is ensured as a result of complex "wet" processing of guar seeds. Soaking guar seeds in a solution at the specified temperature leads to effective soaking of the shell (peel) of the seeds for its subsequent separation, while not causing the formation of mucus as a result of swelling and boiling of the endosperm. Decreasing the temperature at which guar seeds are soaked will reduce the effectiveness of shell softening, with part of the shell remaining associated with the endosperm. This will lead, for example, to contamination of the subsequently obtained guar gum with traces of the shell. Increasing the temperature above 65°C will lead to the formation of slime, especially when seeds are soaked for a long time, and to the loss (reduction in yield) of guar gum as a result of processing the seeds with the resulting slime. The loss of product in this case, in particular, will occur at the stages of separation of the shell, separation of the seed germ and endosperm.

Humidified at an elevated (in the stated range) temperature, guar grains, after separation of the shells, are easily crushed, followed by separation of the germ. The separation of guar seed germ and crushed endosperm is based on the difference in their properties, namely hardness and density.

When crushing, it is preferable to take into account that the size of the resulting particles should preferably correspond to the size of the germ for the subsequent separation of the whole germ from the crushed endosperm in order to prevent the elements of the germ from entering the endosperm processing products.

The guar endosperm separated from the shell and the embryo is boiled in solution at a temperature of 65 to 85°C. In the specified temperature range, the formation of a mucous suspension (thick solution) is ensured, but the destruction of the polymer chains of the galactomannan contained in the endosperm does not occur. Lowering the temperature below 65°C will not ensure the digestion of the solid endosperm and its transfer to a liquid form (suspension), and an increase in temperature above 85°C can lead to the destruction of guar gum in the endosperm due to its low thermal stability. Preferably, endosperm digestion is carried out at a temperature of 70 to 80°C.

Separation of guar gum from the resulting suspension can be carried out by precipitation of the resulting guar gum suspension by adding an organic solvent, followed by separation of the resulting guar gum precipitate, for example, by filtration. Carrying out sedimentation from a thick suspension obtained as a result of endosperm digestion makes it possible to increase the efficiency of sedimentation. As an organic solvent, an organic alcohol, preferably ethyl alcohol, can be used, which dissolves the impurities contained in the original syrup (suspension) and initiates the precipitation of guar gum fibers.

The separation of guar gum can also be carried out using membrane filtration, which is also a known method for separating similar products from thick suspensions (solutions), which also makes it possible to effectively separate guar gum.

The resulting guar gum can be dried and ground to the desired size.

Additionally, an extension of the line of products obtained from the processing of guar seeds can be achieved if the method additionally includes a step for processing seed hulls, which includes the steps of pressing, pelleting and drying, and/or additionally includes a stage for processing guar seed germs, which includes the steps of pressing, pelleting and drying. drying.

As a result of the additional step, the separated casing is separately processed to produce a feed product. The processing of the shell (peel) of the seeds into feed material is carried out by methods known in this field and includes pressing to remove excess moisture after soaking the guar seeds, pelleting and drying the granules obtained by pelleting. The removal of moisture (squeezing) can be carried out by any known method, for example, by filtration or using extruders.

The processing of the germs is carried out in a manner similar to that of the seed coats, by methods known in the art, and includes pressing, pelleting and drying, as a result of which fodder material is also obtained.

After separation of the guar gum, the guar gum (low molecular weight) remaining in the liquid phase is retained in the filtrate. After removing the excess solvent, a concentrated solution of low molecular weight guar gum is another product of the processing of guar seeds - guar gum concentrate. After additional purification, for example, sorption, it is possible to isolate guar gum with a lower molecular weight for use in pharmacology and/or cosmetology.

The soaking of guar seeds may be carried out in water, or may be carried out in a neutral or slightly alkaline aqueous solution, the pH of which may be from 6.5 to 8.5. The solution may also contain additional chemical additives to reduce the swelling of the endosperm. The additives are known to those skilled in the art and may be selected from the group of organic or inorganic compounds that contain at least one of the Fe/Ni/Co/Cr/Pb/B/Ba/Mg/Ca ions. For example, ferric chloride or copper sulfate, or calcium chloride. The soak time is preferably determined by the change in color of the solution, which will change from clear to deep brown. Or, depending on the volume of guar seeds, it can be from 2 hours to 10 hours.

The ratio of guar seed to solution may preferably be 1:2. With this ratio, the optimal moisture content of the seed coat is ensured and in the future it is not required to separate excess liquid.

The soaking of the guar seeds in the solution preferably, but not necessarily, is carried out with agitation to ensure uniform penetration of the solution. The soaking of the guar seeds can be carried out, for example, in a stirring reactor, or in any other device known to the person skilled in the art, in which the seeds can be soaked.

The endosperm digestion solution may further include chemical additives that break down non-guar gum compounds (polymers) contained in the guar seed endosperm. Such additives are known to the person skilled in the art and may be selected, for example, from the group of hydrolytic enzymes (in particular hydrolytic enzymes of alpha-amylases).

The ratio of endosperm to endosperm digestion solution may preferably be 2:1, at which ratio the possibility of clot formation will be reduced and a thick slurry will be formed.

When lumps or clots are formed during endosperm digestion, an additional step of separating and grinding clots (lumps) can be added. To do this, they can be separated from the mass with a sieve, ground and returned to the cooking apparatus, in which the crushed endosperm is boiled.

Drying of the obtained (separated) guar gum can be carried out using IR radiation, for example, on a conveyor belt, through which it then goes to additional crushing and grinding, and then to sieving. The moisture content of the dried gum may preferably be in the range of 3-5%. overdried gum: 1) will lead to increased dust formation at subsequent stages; 2) can lead to a loss (decrease) in the viscosity properties of the target product due to the thermal degradation of galactomannan.

Additionally, the method may include the step of regenerating the filtrate after separating the guar gum to purify it. Regeneration can be carried out using distillation columns.

The suspension can additionally be subjected to pasteurization (high temperatures) to suppress the vital activity of microorganisms harmful to the gum. Temperature limits for pasteurization of such products are known to those skilled in the art.

The technical result is achieved by using a plant that includes a series-connected device, which ensures the soaking of guar seeds at a temperature of 45 to 65 ° C, a device for separating seed hulls, a device for grinding peeled guar seeds, a device for separating crushed guar seeds into germs and crushed endosperm, a device in which the crushed endosperm is boiled at a temperature of 65 to 85°C, and a device in which guar gum is separated.

The technical result is provided by a set of devices that provide consistent "wet" processing of guar seeds under the specified conditions.

The installation may additionally include an additional module for processing guar seed hulls, which includes squeezing, pelletizing and drying devices connected to a device that provides separation of seed hulls, and may also include an additional module for processing guar seed germs, which includes squeezing, pelletizing and drying devices, which connected to a device for separating the guar seed germ from the crushed endosperm. In this case, an additional technical result is provided - expanding the range of products obtained by processing guar seeds.

The Guar Seed Hull Processing Module and the Guar Seed Germ Processing Module include squeezing devices (for example, filters can be used to separate excess liquid), pelletizing (in particular, a granulator) and drying (any known type of dryer used in the food industry ).

The device in which the soaking of the guar seeds is provided can be a mixer reactor, in which the mixing of the guar seeds with the solution can also be carried out to further increase the efficiency of the soaking (distributing the solvent evenly between the seeds), or any other device in which the soaking can be carried out seeds (for example, an industrial boiler used in the food industry). The device for mechanically separating the seed coats may be a shelling machine.

The device for crushing the shelled guar seed can be, for example, a crusher that is set to grind according to the average size of the germ of the guar seeds, or a meat grinder, the diameter of the openings of which can preferably be the average size of the germ of the guar seeds.

The device for separating the guar seed germ from the crushed endosperm can be a screening machine with wet screening capability, such as a vibrating screen, using a washing liquid.

The device in which the crushed endosperm is boiled can be a mixing reactor or an industrial boiler with a heat source.

At the same time, if the variant of precipitation of guar gum from the suspension obtained by boiling the endosperm is used to separate guar gum, precipitation can be carried out in the mixer reactor itself, however, it is preferable to carry out precipitation in another device, for example, in a flow displacement reactor. In this case, the displacement flow reactor will be part of a device that provides separation of guar gum, which may also include a druk filter, the mesh size of which can be no more than 2 mm.

The installation may further include a device for drying guar gum connected to a device for separating guar gum. Also, the guar seed processing plant may additionally include devices for crushing and/or grinding guar gum, connected to a device that provides drying of guar gum.

The device for drying guar gum can be an infrared dryer, which, for example, can be made on a conveyor belt, through which the separated guar gum goes to additional crushing and grinding, and then to sieving.

The guar seed processing plant may further include a distillation column connected to a device for separating guar gum.

The inventive installation may also include at least one organic solvent recovery module connected to a device that provides separation of guar gum.

The installation for processing guar seeds may additionally include a device for condensing the vapor evaporated in the drying devices, which is connected to the drying (drying) devices. This, in turn, can be connected to a device in which the soaking of guar seeds is provided at a temperature of 45 to 65°C, and a device in which the crushed endosperm is boiled at a temperature of 65 to 85°C. It can also be connected to a device that separates crushed guar seeds into germs and crushed endosperm, in a variant that uses a washing liquid. This makes it possible to use the condensed water again at the stages of separating the shells of the guar seeds and boiling the crushed endosperm. Said device may be a capacitor.

The invention is illustrated by the following figures.

The figure 1 shows a general block diagram of the proposed method indicating the stages, where 1 - cleaning the guar seeds from the shell, 2 - processing the shells, 3 - grinding the shelled guar seeds, 4 - separating the crushed guar seeds into germs and crushed endosperm, 5 - processing of the germ, 6 - digestion of the crushed endosperm, 7 - separation of guar gum.

The figure 2 shows a possible variant of the general hardware - technological scheme for the complex processing of guar seeds, where 8 is a mixer reactor, 9 is a shelling machine, 10 is a filter, 11 is a granulator, 12 is a dryer, 13 is a crusher, 14 is a vibrating screen, 15 is flow reactor, 16 - distillation column, A - crushed guar seeds, B - separated shells (peel) of guar seeds, C - separated germ, D - crushed endosperm, E - guar gum concentrate solution, F - regenerated organic solvent.

The method for processing guar seeds includes cleaning the seeds from the shell 1, which consists in soaking the guar seeds in a solution at a temperature of 45 to 65°C and subsequent mechanical separation of the seed shells. The shells of guar seeds are additionally processed 2 into fodder material by pressing, pelletizing and drying. The hulled guar is crushed to the size of a seed germ 3, then the germ is separated from the crushed guar 4. Additionally, the guar seed germs are processed into fodder material, which includes pressing, pelleting and drying 5. The crushed endosperm is boiled 6 at a temperature of 65 to 85°C , then guar gum is separated from the suspension of boiled endosperm 7.

The invention is illustrated by an implementation example for which material flows are modeled and calculated.

The guar seeds are fed to the dehulling stage where they are soaked in an alkaline solution of pH = 8 (which may contain the above chemical additives) in a mixing reactor 8 with heating to provide a mixture temperature of 70°C. Soaking is carried out preferably with stirring until a dark solution is obtained. At this stage, the seeds are impregnated with a solution, due to which the shells become fragile, and they are quite easily separated from the seed at the stage of separation - peeling in the peeling machine 9.

The separated wet shells enter the processing cycle for feed material, which includes the stages of pressing, which can be carried out by extruders and / or filters 10, pelletizing in a granulator 11 and drying 12. The filtrate is evaporated to obtain a protein concentrate, which is then dried on granules /pellets shell and/or germ. The water evaporated during drying is condensed, for example, in a condenser (not shown in the figures), and is reused at the stages of soaking, boiling, washing, etc.

Partially soaked guar grain, peeled from the shells, is sent to the stage of crushing (wet grinding) in the crusher 13, where it is destroyed under mechanical action, forming a heterogeneous slurry of ground endosperm cotyledons and germs. Then the germs are screened out, which is carried out on vibrating screens 14 with the addition of washing liquid (circulating water), which separates the wet endosperm pieces and the germs. The embryos have a regular size and are hard. The difference in the properties of the embryo and endosperm makes it possible to separate them and send the embryos for further processing to obtain a feed product, which is similar to that for shells.

Pieces of crushed endosperm cotyledons separated from the embryos are sent to the stage of digestion at a temperature of 80°C, which is carried out in a mixing reactor 8. It is possible to use chemical additives for the efficient flow of the process, namely, hydrolytic enzymes of alpha-amylases. Here, the moist but partially firm endosperm is boiled into a purée-like suspension. In this suspension, inhomogeneities in the form of clots and lumps may be partially present, which are separated from the main mass with a sieve (or ground), returned to the cooking apparatus again. The boiling time is 40 minutes.

Next, the precipitation of guar gum occurs, which is carried out by treating the boiled suspension with an organic solvent (ethyl alcohol), which takes, i.e. dissolves the impurities contained in the original syrup, and initiates the precipitation of guar gum fibers. This stage is carried out in a flow reactor 15. After squeezing on filters 10, the filtrate (ethyl alcohol) goes through the regeneration stage, which is carried out in distillation columns 16, after which the finished (regenerated) solvent leaves, and a promising product (guar gum concentrate) remains in the distillation residue , which after the stages of additional, for example, sorption, cleaning can find application in pharmacology and / or cosmetology.

The precipitated and squeezed gum in the form of compressed fibers is fed to the dryer 12 for drying, which can be carried out by means of infrared radiation on a conveyor belt, from where it is fed to the crusher 13 for crushing and then to sifting on vibrating screens 14.

For the correct selection of equipment, the following are the calculated material flows that take place in the above-described technological scheme. The results are presented in Table 1. Calculations are made in relative units of mass, the yield of guar gum is 25%, the rest falls on feed materials and guar gum concentrate.

Based on the known material flows, calculations were made of the productivity of the processing complex (installation for processing guar seeds using the claimed method) based on a given amount of the finished product (guar gum). The results of the calculation options are shown in Table 2.

The presented example and calculations confirm that the claimed method and installation for processing guar seeds allow expanding the range of products obtained by processing guar seeds, increasing the yield of guar gum through the use of a "wet" method of processing seeds, taking into account the properties of the components of the seeds (which eliminates the loss of dry product), as well as simplify the separation of guar seeds into individual components (shell, endosperm, germ) and reduce the amount of liquid used during processing.

Table 1. Calculation of material flows of the guar seed processing method.

Coming Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Consumption Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Guar Seed Dehulling Step Guar seeds 1.00 0.92 0.08 8.0 Wet shell 0.85 0.30 0.55 65.0 Fresh water 0.20 0.00 0.20 100.0 Grains without shell 0.90 0.72 0.18 20.0 Water return 1.70 0.00 1.70 100.0 Soak solution 1.25 0.00 1.25 99.8 Chemical additives 0.10 0.10 0.00 0.0 0.00 Total 3.00 1.02 1.98 Total 3.00 1.02 1.98 Seed hull processing 1. Spin Wet shell 0.85 0.30 0.55 65.0 Pressed sheath 0.37 0.28 0.09 25.0 Filtrate 0.48 0.02 0.46 96.1 Total 0.85 0.30 0.55 Total 0.85 0.30 0.55 2. Rolling Pressed sheath 0.37 0.28 0.09 25.0 shell pellets 0.46 0.30 0.16 35.2 Protein concentrate 0.09 0.02 0.07 76.1 0.00 Total 0.46 0.30 0.16 Total 0.46 0.30 0.16 3. Drying shell pellets 0.46 0.30 0.16 35.2 feed material 0.32 0.30 0.02 5.0 Evaporated water 0.15 0.00 0.15 100.0 Total 0.46 0.30 0.16 Total 0.46 0.30 0.16

Table 1. Continued.

Coming Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Consumption Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Evaporation/drying of the filtrate from the pressing step of guar seed husk processing and germ processing Filtrate from shell pressing 0.48 0.02 0.46 96.1 Evaporated water 0.49 0.00 0.49 100.0 Germ squeezing filtrate 0.14 0.01 0.13 92.2 Protein concentrate 0.12 0.03 0.09 76.1 Total 0.62 0.03 0.59 Total 0.62 0.03 0.59 Grinding shelled guar seeds Guar seeds 0.90 0.72 0.18 20.0 crushed seeds 0.90 0.72 0.18 20.0 Total 0.90 0.72 0.18 Total 0.90 0.72 0.18 Separation of crushed guar seeds into germs and crushed endosperm crushed seeds 0.90 0.72 0.18 20.0 Crushed endosperm 0.54 0.34 0.21 37.1 Wash water (evaporated) 0.23 0.00 0.23 100.0 wet germs 0.58 0.38 0.20 35.0 Total 1.13 0.72 0.41 Total 1.13 0.72 0.41 Germ processing 1. Spin wet germs 0.58 0.38 0.20 35.0 Pressed embryos 0.44 0.37 0.08 17.0 Filtrate 0.14 0.01 0.13 92.2 Total 0.58 0.38 0.20 Total 0.58 0.38 0.20

Table 1. Continued.

Coming Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Consumption Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % 2. Rolling Pressed embryos 0.44 0.37 0.08 17.0 Embryo pellets 0.47 0.38 0.10 20.8 Protein concentrate 0.03 0.01 0.02 76.1 Total 0.47 0.38 0.10 Total 0.47 0.38 0.10 3. Drying Embryo pellets 0.47 0.38 0.10 20.8 feed material 0.39 0.37 0.02 5.0 Evaporated water 0.08 0.00 0.08 100.0 Total 0.47 0.38 0.10 Total 0.47 0.38 0.10 Endosperm digestion Crushed endosperm 0.54 0.34 0.20 37.1 Boiled Endosperm Suspension 1.01 0.36 0.65 64.5 Water 0.43 0.00 0.43 100.0 Lumps 0.04 0.02 0.02 50.0 Total 1.01 0.36 0.65 Total 1.01 0.36 0.65 Lump separation Boiled Endosperm Suspension 1.01 0.36 0.65 64.5 Homogeneous endosperm suspension 0.98 0.34 0.63 65.0 Lumps 0.04 0.02 0.02 50.0 Total 1.01 0.36 0.65 Total 1.01 0.36 0.65

Table 1. Continued.

Coming Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Consumption Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Branch of guar gum 1. Precipitation of guar gum Homogeneous endosperm suspension 0.98 0.34 0.63 65.0 Guar pulp. gums and organic solvent 1.66 0.34 1.32 79.4 organic solvent 0.68 0.00 0.68 100.0 Total 1.66 0.34 1.32 Total 1.66 0.34 1.32 2. Spin (separation of guar gum) Pulp of guar gum and organic solvent 16.66 0.34 132 79.4 Guar gum 0.53 0.24 0.29 55.0 Filtrate 1.13 0.10 1.03 90.9 Total 16.66 0.34 132 Total 1.66 0.34 1.32 Organic solvent recovery Filtrate 1.13 0.10 1.03 90.9 Solvent 0.68 0.00 0.68 100.0 Guar gum concentrate 0.45 0.10 0.34 76.9 Total 1.13 0.10 1.03 Total 1.13 0.10 1.03

Table 1. Continued.

Coming Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Consumption Quantity, units The amount of solid matter in the stream, units The amount of liquid in the flow, units Flow humidity, % Drying Guar Gum Guar gum 0.53 0.24 0.29 55.0 Dried guar gum 0.25 0.24 0.01 5.0 Evaporated water 0.28 0.00 0.28 100.0 Total 0.53 0.24 0.29 Total 0.53 0.24 0.29 Grinding Dried Guar Gum Dried guar gum 0.27 0.26 0.01 5.0 Crushed guar gum 0.27 0.26 0.01 5.0 Total 0.27 0.26 0.01 Total 0.27 0.26 0.01 Screening Crushed guar gum 0.27 0.26 0.01 5.0 Guar gum (size less than 150mesh) 0.25 0.24 0.01 5.0 Guar gum (fineness more than 150mesh) 0.02 0.02 0.00 5.0 Total 0.27 0.26 0.01 Total 0.27 0.26 0.01

Table 2. Productivity of the plant for processing guar seeds by main products and consumed raw materials, t/year.

Specifications Option 1 Option 2 Option 3 Gum performance 5000.0 18250.0 36500.0 Number of seeds for processing 20025.5 73093.2 146186.4 Dried shell pellets (feed material) 6332.0 23111.8 46223.6 Dried germ pellets (feed material) 7894.3 28814.2 57628.5 VAT residue (Guar Gum Concentrate) 799.2 2917.1 5834.3

Claims (45)

1. Method for processing guar seeds, which includes the following steps: - cleaning the seeds from the shell, which includes soaking the seeds of guar in an aqueous solution at a temperature of from 45 to 65°C and then separating the shells of the seeds; - grinding of guar seeds, peeled; - separation of crushed guar seeds into embryos and crushed endosperm; - boiling the crushed endosperm in an aqueous solution at a temperature of 65 to 85°C; - separation of guar gum from boiled crushed endosperm. 2. The method of processing guar seeds according to claim 1, which further includes the step of processing seed hulls, which includes the steps of pressing, pelleting and drying. 3. The method for processing guar seeds according to claim 1, which further includes the step of processing guar seed germs, which includes the steps of pressing, pelleting and drying. 4. The method for processing guar seeds according to claim 1, which further comprises the step of separating the low molecular weight guar gum concentrate after the step of separating the guar gum. 5. The guar seed processing method according to claim 1, wherein the guar seed soaking solution is a neutral or alkaline aqueous solution with a pH of 6.5 to 8.5. 6. The guar seed processing method of claim 5, wherein the guar seed soak solution further comprises chemical additives to reduce seed swelling. 7. A method for processing guar seeds according to claim 1, wherein the ratio of soaking solution to guar seeds is 2:1. 8. A method for processing guar seeds according to claim 1, wherein the soaking of the guar seeds is carried out with agitation. 9. A method for processing guar seeds according to claim 2 or 3, wherein filtration is used in the pressing step. 10. The method of processing guar seeds according to claim 1, in which the grinding of the endosperm is carried out to the size of the seed germ. 11. A method for processing guar seeds according to claim 1, wherein a washing liquid is used in separating the guar seed germ from the crushed endosperm. 12. A method for processing guar seeds according to claim 1, wherein separating the guar gum includes the step of precipitating the guar gum with an organic solvent. 13. A method for processing guar seeds according to claim 12, wherein the organic solvent is ethyl alcohol. 14. The guar seed processing method of claim 1, wherein the endosperm digestion solution comprises chemical additives that break down compounds other than guar gum contained in the guar seed endosperm. 15. A method for processing guar seeds according to claim 1, wherein the ratio of endosperm to endosperm digestion solution is 2:1. 16. The method for processing guar seeds according to claim 1, which further comprises, after the step of boiling the endosperm, the step of separating and grinding the clumps. 17. The method of processing guar seeds according to claim 1, which further includes the step of regenerating the filtrate after the step of separating the guar gum from the boiled ground endosperm. 18. A method for processing guar seeds according to claim 1, which further comprises drying the separated guar gum. 19. A method for processing guar seeds according to claim 18, wherein the drying of guar gum is carried out to a moisture content of 3 to 5%. 20. A method for processing guar seeds according to claim 18 or 19, wherein the drying of the guar gum is carried out using IR radiation. 21. The process for processing guar seeds according to claim 18, which further comprises the steps of crushing and grinding the guar gum after drying. 22. A method for processing guar seeds according to claim 1, wherein the boiled ground endosperm is a suspension. 23. Installation for processing guar seeds, which includes a device connected in series, in which guar seeds are soaked at a temperature of 45 to 65 ° C, a device for separating seed hulls, a device for grinding peeled guar seeds, a device for separating crushed guar seeds on germs and crushed endosperm, a device in which the crushed endosperm is boiled at a temperature of 65 to 85°C, and a device in which guar gum is separated. 24. The guar seed processing plant of claim 23, which further includes a guar seed hull processing module that includes pressing, pelletizing and drying devices connected to a seed hull separation device. 25. The guar seed processing plant according to claim 23, which further includes a guar seed germ processing module, which includes pressing, pelletizing and drying devices, which is connected to a device for separating crushed guar seeds into germs and crushed endosperm. 26. A guar seed processing plant according to claim 23, wherein the device in which the soaking of the guar seeds is provided is a mixing reactor. 27. The guar seed processing plant according to claim 23, wherein the device for mechanically separating the seed hulls is a shelling machine. 28. The guar seed processing plant according to claim 23, wherein the dehulled guar seed grinding device is a crusher. 29. The guar seed processing plant according to claim 28, wherein the grinding is carried out in accordance with the average germ size of the guar seeds. 30. The guar seed processing plant according to claim 23, wherein the device for separating the crushed guar seeds into germs and crushed endosperm is a wet screening machine. 31. The guar seed processing plant according to claim 23, wherein the device for digesting the crushed endosperm is a mixing reactor. 32. A guar seed processing plant according to claim 23, wherein the guar gum separation device is a displacement flow reactor connected to a druk filter. 33. The guar seed processing plant according to claim 32, wherein the cell size of the druk filter is not more than 2 mm. 34. The guar seed processing plant of claim 23, further comprising a guar gum drying device connected to the guar gum separation device. 35. A guar seed processing plant according to claim 34, wherein the apparatus for drying the guar gum is an infrared dryer. 36. The guar seed processing plant according to claim 23, which further includes a distillation column connected to a device for separating guar gum. 37. The guar seed processing plant according to claim 34, which further includes devices for crushing and/or grinding guar gum connected to a device for drying guar gum. 38. The guar seed processing plant according to claim 23, which further includes a device for condensing the steam evaporated in the drying devices, which is connected to the drying devices. 39. The guar seed processing plant according to claim 38, wherein the device for condensing the vapor evaporated in the drying devices is a condenser. 40. A guar seed processing plant according to claim 38 or 39, wherein a device for condensing the steam evaporated in the drying device is connected to a device for soaking guar seeds at a temperature of 45 to 65°C, and a device for which ensures the digestion of crushed endosperm at a temperature of 65 to 85°C.

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