RU2640843C1 - Method for obtaining microcapsulated choline chloride from its water solution - Google Patents

Abstract

FIELD: agriculture.SUBSTANCE: after drying, powdered choline chloride is sent for encapsulation by applying a heated gelatine solution to its surface, the heating being carried out with the condensate of spent superheated atmospheric-pressure steam; the resulting capsules are sent to the cooler, from which they are withdrawn as a finished product; for obtaining cold and hot coolant streams, a steam-jet refrigerating machine is used, consisting of an ejector, a condenser represented by an atmospheric-pressure superheater, a heat exchanger-recuperator, a thermostatic valve, a steam generator, wherein the mixture of working steam and ejected vapours after the ejector is sent to the condenser for superheating the atmospheric-pressure steam, and the resulting condensate - into the second section of the air heater, which is then returned to the steam generator to form a recuperation circuit; spent atmospheric air after the heater is fed to the heat exchanger-recuperator for cooling and then divided into two streams, one of which is sent to the condenser to condense the spent superheated flashed steam followed by feeding into the two-sectional air heater, and the other - into the cooler to cool the capsules, and then - into the two-section air heater together with air; after the condenser, it is sent to the dryer with the formation of a closed loop.EFFECT: finished product positively influencing the rumen microflora during digestion in ruminant animals and having low hygroscopicity due to the use of a gelatine capsule, to obtain material flows with different thermal potential due to the use of a steam-jet refrigerating machine, to reduce specific energy costs due to the heat of spent coolants.1 dwg,1 tbl

Description

The invention relates to methods for producing a granular form of choline chloride from its aqueous solution having a biological effect.

The closest in technical essence and the achieved effect is a method for producing a granular form of powdered choline chloride / from its aqueous solution [Patent No. 2486773 of the Russian Federation, A23L 1/302, A23K 1/16; C07C 215/40. A method of obtaining a granular form of powdered choline chloride from its aqueous solution [Text] / A.V. Drannikov, A.A. Shevtsov, E.V. Kostina, E.Yu. Storozhenko (Russia) - No. 2012104317/13; claimed 02/07/2012; published on July 10, 2013; Bull. No. 19], which provides for the use of dry beet pulp as an active adsorbent, which is crushed, fractionated, mixed with a pre-heated aqueous solution of choline chloride, and then dried in a vibratory dryer with superheated atmospheric pressure steam, separation of the spent superheated steam stream into the main one, which is sent to the vibratory dryer, forming a recirculation loop, and an additional one, directed to heating the choline chloride before feeding it to the mixing.

However, the known method has the following disadvantages:

- the resulting product has a negative effect on the microflora of the rumen during digestion in ruminants;

- the finished product is highly hygroscopic, and therefore it must be transported in special packaging;

- the developed method does not provide for the use of a steam ejector refrigeration machine to obtain material flows with different thermal potentials;

- the heat of the spent heat carrier is not fully used, which leads to increased energy consumption.

An object of the invention is to improve the quality of the product and reduce energy costs when obtaining microencapsulated choline chloride.

The object of the invention is achieved in that in a method for producing microencapsulated choline chloride from its aqueous solution, comprising mixing a 70% aqueous solution with an active sorbent obtained as a result of a two-stage drying process in a two-section dryer, the spent superheated steam from the first section of the dryer is separated into two streams, one of which is fed to the atmospheric pressure superheater for overheating, and then returned to the first section with the formation of a river circuit perration, and the other stream in the amount formed during the drying of the product at the first stage is directed to a reduced pressure superheater, the spent superheated reduced pressure steam from the second section of the dryer is divided into two streams, one of which is fed by a fan to the reduced pressure superheater for overheating, and then return to the second section with the formation of a recirculation loop, and another steam stream in the amount generated during the drying of the adsorbent in the second stage, is sent to the condenser, where its condensation and preliminary heating of the atmospheric air through the separating wall of the condenser proceeds, the condensate of the heating steam from the atmospheric pressure superheater and the condensate of the spent superheated atmospheric pressure steam from the reduced pressure superheater are fed into the two-section air heater for the final heating of the atmospheric air through the separating wall of the heater, while the resulting dry the adsorbent is crushed, fractionated, and the gathering of the sieve is sent to regrind, and about the passage through the sieve is mixed with a pre-heated aqueous solution of choline chloride in a ratio of 2: 3, then the resulting mixture is fed to the dryer, where it is dried in a fluidized bed with heated atmospheric air, while the exhausted atmospheric air from the dryer is first sent for cleaning to a cyclone cleaner, and then into the heater to heat the initial solution of choline chloride before feeding it into the mixer, and the finely divided fraction of choline chloride obtained after purification is combined with the stream of finished powdery choline Lorida after the dryer, it is new that the powder choline chloride obtained after the dryer is sent for encapsulation by applying a heated gelatin solution to its surface, and heating is carried out by the condensate of the spent superheated atmospheric pressure steam, the resulting capsules are sent to a cooler, from which they are removed as a finished product, To obtain cold and hot coolant flows, a steam ejector refrigeration machine is used, consisting of an ejector, a condenser, which о they use a superheater of atmospheric pressure, an evaporator, a heat exchanger-recuperator, a thermostatic expansion valve, and a steam generator; moreover, the mixture of working steam and ejected vapors after the ejector is sent to the condenser to superheat the atmospheric pressure steam, and the condensate formed is sent to the second section of the heater, which is then returned to the steam generator to form recovery circuit; the exhaust air after the heater is fed to a heat exchanger-recuperator for cooling, and then it is divided into two flows, one of which is sent to a condenser to condense the exhaust superheated steam of reduced pressure, followed by supply to a two-section air heater, and the other to the cooler to cool the capsules, and then in a two-section heater, together with the air after the condenser, is sent to the dryer with the formation of a closed loop.

The drawing shows a diagram that implements the proposed method for producing microencapsulated choline chloride from its aqueous solution.

The scheme contains: dryers 1, 5; crusher 2; sifter 3; mixer 4; cyclo-cleaner 6; capsulator 7; capsule cooler 8; atmospheric pressure superheater 9; reduced pressure superheater 10; atmospheric pressure fan 11; reduced pressure fan 12; fan 13; two-section air heater 14; capacity for gelatin 15; pumps 16, 17; capacitor 18; a pump for supplying an aqueous solution of choline chloride 19; water choline chloride heater 20; ejector 21; heat exchanger-recuperator 22; evaporator 23; condensate collector 24; steam generator 25; safety valves 26; fan 27; thermostatic valve 28.

A method of obtaining a microencapsulated choline chloride from its aqueous solution is as follows.

Wet material is fed into the drying section by superheated atmospheric pressure steam of a two-section dryer 1, where drying takes place in a pulsed vibratory boiling layer. As a drying agent, superheated atmospheric pressure steam is used. In this case, the spent superheated steam from the first section of the dryer 1 is divided into two streams, one of which is fed to the atmospheric pressure superheater 9, and then the first section of the dryer 1 is returned with the formation of a recovery circuit, and the other stream in the amount generated during the drying of the product at the first stage , sent to the superheater of reduced pressure 10. The spent superheated steam of reduced pressure from the second section of the dryer 1 is divided into two streams, one of which is fed by the fan 12 to the superheater lower pressure for overheating, and then returned to the second section with the formation of a recirculation loop, and another steam stream in the amount generated during the drying of the adsorbent in the second stage is sent to the condenser 18, where it is condensed and pre-heated atmospheric air through the dividing wall capacitor.

The resulting condensate of the heating steam from the atmospheric pressure superheater 9 and the condensate of the spent superheated atmospheric pressure steam from the reduced pressure superheater 10 are fed into a two-section air heater 14 for the final heating of atmospheric air through the separating wall of the air heater 14.

The obtained dry adsorbent is crushed, fractionated, and the sieve gathering is sent to grinding mill 2, and the passage through the sieve of the sieving machine 3 is mixed with a pre-heated aqueous solution of choline chloride in a ratio of 2: 3 in mixer 4. Next, the resulting mixture is fed to dryer 5, where it is carried out its drying in a fluidized bed with heated atmospheric air.

The exhaust air from the dryer 5 is first sent for cleaning to a cyclone-cleaner 6, and then to the heater 20 for heating the initial solution of choline chloride before feeding it into the mixer.

The finely dispersed choline chloride fraction obtained after cleaning is combined with the stream of finished powdery choline chloride after dryer 5, then sent to encapsulation in capsulator 7 by applying heated gelatin solution to container 15 on its surface. The heated superheated steam of atmospheric pressure is heated by condensate, the capsules obtained are sent to cooler 8 , from which they are removed in the form of a finished product.

To obtain cold and hot coolant flows, a steam ejector refrigeration machine is used, consisting of an ejector 21, a condenser, which uses an atmospheric pressure superheater 9, an evaporator 23, a heat exchanger-recuperator 22, a thermostatic valve 28, a steam generator 25. A mixture of working steam and ejected vapors after the ejector 21 is sent to the condenser 18 for overheating the atmospheric pressure steam, and the condensate formed is in the second section of the heater 14, which is then returned to the steam generator 25 about mation recovery circuit. The exhaust atmospheric air after the heater 20 enters the heat exchanger-recuperator 22 for cooling, and then is divided into two streams, one of which is sent to the condenser 18 to condense the spent superheated steam of reduced pressure, followed by supply to the two-section air heater 14, and the other to the cooler 8 on cooling the capsules, and then into two sectional air heaters 14 together with the air after the condenser 18 are sent to the dryer with the formation of a closed loop.

An example implementation of the method

The proposed method was implemented in the conditions of OJSC “Voronezh Experimental Feed Mill” with the following operating parameters (apple squeezes are used as the active adsorbent) Table 1.

Table 1 - Performance parameters for the production of microencapsulated choline chloride from its aqueous solution

As a result of applying the method, it was possible to obtain a high quality product. The gelatin capsule reduces the hygroscopic properties of the product and protects against environmental influences during storage. Through the use of a steam jet machine, it was possible to reduce energy consumption by 10-15%.

Thus, the proposed method for producing microencapsulated choline chloride from its aqueous solution allows:

- to obtain a finished product that has a positive effect on the microflora of the rumen during digestion in ruminants and has low hygroscopicity due to the use of a gelatin capsule;

- to obtain material flows with different thermal potential due to the use of steam ejector refrigeration machine;

-decrease specific energy consumption through the use of the heat of waste heat carriers.

Claims (1)

A method of producing a microencapsulated choline chloride from its aqueous solution, comprising mixing a 70% aqueous solution with an active sorbent obtained as a result of a two-stage drying process in a two-section dryer, with this spent superheated steam from the first section of the dryer is divided into two streams, one of which is fed into atmospheric pressure superheater for overheating, and then returned to the first section with the formation of the recovery circuit, and another stream in the amount generated during the drying process and the product at the first stage, is sent to a reduced pressure superheater, the spent superheated reduced pressure steam from the second section of the dryer is divided into two flows, one of which is fed by a fan to the reduced pressure superheater for overheating, and then returned to the second section to form a recirculation loop, and another steam stream in the amount generated during the drying of the adsorbent in the second stage is directed to the condenser, where it is condensed and preheated by atmospheric air ear through the separating wall of the condenser, the formed condensate of the heating steam from the superheater of atmospheric pressure and the condensate of the spent superheated steam of atmospheric pressure from the superheater of reduced pressure is fed into a two-section air heater for the final heating of the atmospheric air through the separating wall of the air heater, while receiving a dry adsorbent, then it is crushed, fractionated moreover, the gathering of the sieve is directed to regrinding, and the passage through the sieve is mixed with preheated water with a solution of choline chloride in a ratio of 2: 3, then the resulting mixture is fed to the dryer, where it is dried in a fluidized bed with heated atmospheric air, while the exhaust atmospheric air from the dryer is first sent for cleaning to a cyclone cleaner, and then to a heater to heat the source choline chloride solution before feeding it into the mixer, and the finely divided fraction of choline chloride obtained after purification is combined with the stream of finished powdery choline chloride after drying, characterized in that it is obtained after dryers, powdery choline chloride is sent for encapsulation by applying a heated gelatin solution to its surface, and heating is carried out by condensate of spent superheated atmospheric pressure steam, the resulting capsules are sent to a cooler, from which they are withdrawn in the form of a finished product, a steam-ejected refrigeration machine is used to obtain cold and hot fluids of heat carriers consisting of an ejector, a condenser, which is used as a superheater of atmospheric pressure, vapor an heater, a heat exchanger-recuperator, a thermostatic expansion valve, a steam generator, and the mixture of working steam and ejected vapors after the ejector is sent to a condenser to superheat atmospheric pressure steam, and the condensate formed is sent to the second section of the heater, which is then returned to the steam generator with the formation of a recovery circuit; the exhaust air after the heater is fed to a heat exchanger-recuperator for cooling, and then it is divided into two streams, one of which is sent to a condenser to condense the spent superheated steam of reduced pressure, followed by supply to two sectional air heaters, and the other to the capsule cooler, and then into a two-section air heater, together with the air after the condenser, they are sent to the dryer with the formation of a closed loop.

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