RU2304416C2 - Method for preparing of dry distillery dregs and apparatus for performing the same - Google Patents

Abstract

FIELD: food-processing industry.

SUBSTANCE: method involves preliminarily preparing basic distillery dregs to drying process; increasing content of dry substances therein, followed by drying of distillery dregs. Preliminary stage of preparing distillery dregs is completed with additional process of forming distillery dregs in continuous layer provided on carrier surface. After producing of dry substance, part of it is fed in recirculation mode to stage for increasing content of dry substances in basic distillery dregs, said stage being combined with basic distillery dregs preparing stage. Also, apparatus for preparing of dry distillery dregs is described.

EFFECT: increased efficiency and reduced drying time.

6 cl, 1 dwg

Description

The invention relates to methods for drying viscous sticky media and can be used in the food and alcohol industries.

A known method of preparing a dry dietary supplement, comprising a preliminary stage of preparing the source of raw materials for drying and subsequent drying to obtain the final dry product [1].

In the specified technical solution, the feedstock is preliminarily divided into two components and then separately fed to the drying apparatus, where they are co-dried.

The disadvantage of the described method is the complexity of the process and the significant preparation time of the stillage before drying and the drying itself.

It is also known a device for preparing a dry dietary supplement containing a loading chamber of the components of the feedstock, a dispensing unit, a drying apparatus and a storage hopper of the formed product [1].

The disadvantage of this device is the significant dimensions of the processing equipment.

The closest technical solution in part of the method is a method of preparing dry stillage, including the preliminary stage of preparing the initial post-alcohol stillage for drying, the stage of increasing the solids content in it and subsequent drying of the stillage with obtaining the final dry product [2].

In the indicated technical solution, at the preparation stage, the initial post-alcohol distillery stillage is homogenized by stirring, then it is divided into two components, then the formed components are separately dried and mixed to form the resulting distillery stillage with a high solids content, after which the resulting distillery stillage is fed into the drying apparatus, where its final drying takes place.

The disadvantage of the described method is the complexity of the process of increasing the solids content in the original bard and the significant preparation time of the bard before drying.

The closest technical solution in terms of the device is an apparatus for preparing dry vinasse, containing a drying apparatus with inlet and outlet sections, a dispensing unit located on the inlet side, a unit for increasing the solids content and a preparation chamber for the initial post-alcohol stillage vinasse with loading and unloading paths, and from the side output section - storage hopper [2].

In the specified technical solution, the initial post-alcohol distillation stillage is subjected to standard processing in the preparation chamber, then in the stand-alone unit the content of dry substances in it is increased, after which the distillery stillage is sent to the drying apparatus.

The block for increasing the solids content is made in the form of a system of elements structurally integrated into a single whole.

The disadvantages of this device are the significant dimensions of the processing equipment and the considerable preparation time of the stillage before drying.

The aim of the invention is to reduce the size of technological equipment, simplify the process, increase the uniformity of the stillage and reduce the time it takes to prepare before drying.

This goal in terms of the method is achieved by the fact that in the known method of preparing dry stillage, including the preliminary stage of preparing the initial post-alcohol stillage for drying, the stage of increasing the dry matter content in it and the subsequent drying of the stillage with obtaining the final dry product, the preliminary preparation step is completed by an additional molding operation bards in the form of a continuous layer on the bearing surface, and after receiving the dry product, part of it in the recirculation mode is fed to the stage of increasing the dry matter content ETS in the initial vinasse, wherein the step of increasing the content of solids is combined with the initial stage of preparation stillage.

In addition, a dry product can be fed to the stage of increasing the solids content in the initial post-alcohol distillery stillage in an amount equal to 40-60% of the mass quantity of the initial distillery stillage, and grind to a particle size of not more than 1 mm, and the drying process itself can be carried out in a radiant field energy, while the thickness of the continuous layer is chosen no more than 2 mm.

Before the molding operation, the bards can be wetted with a substance that prevents the bards from sticking to the surface, for example, edible vegetable oil.

This goal in terms of the device is achieved by the fact that in the known installation for the preparation of dry vinasse containing a drying apparatus with inlet and outlet sections, a dispensing unit located on the inlet side, a unit for increasing the solids content and a preparation chamber for the initial post-alcohol distillery stillage with loading and unloading paths and from the output section side there is a storage hopper, the dispensing unit is directly connected to the discharge chamber of the preparation chamber, and the storage hopper is equipped with a cutting scraper and a message en by the recirculation line with the loading path of the preparation chamber for the initial stillage with the formation of a block for increasing the solids content.

The drawing schematically depicts the described installation.

Installation for the preparation of dry stillage contains a drying apparatus 1 with input 2 and output 3 sections located on the side of the input section 2 of the dispensing unit 4, a block 5 for increasing the solids content and a chamber 6 for preparing the initial post-alcohol distillery stillage with paths 7, 8 for loading and unloading, and from the side of the output section 3 - the storage hopper 9. The dispensing unit 4 is directly connected to the discharge path 8 of the preparation chamber 6, and the storage hopper 9 is equipped with a cutting scraper 10 and communicated with a recirculation line 11 from the track the loading volume 7 of the chamber 6 preparation of the original stillage with the formation of block 5 increase the solids content. Block 5 may contain a number of auxiliary elements, such as a chopper, dispenser, etc.

Transportation of the original stillage to the drying apparatus 1 and delivery of the dried stillage to the collecting hopper 9 is carried out using the bearing surface 12.

In the General case, the bearing surface 12 can be made in any known manner, in particular, can be an endless conveyor belt located between the driven and drive shafts.

Any known apparatus may be selected as the drying apparatus 1, however, apparatuses with the heat being supplied directly to the medium to be dried from the side opposite the bearing surface, for example, drying in a field of radiant energy, are more preferred.

The described method is as follows.

The initial post-alcohol bard is fed into the preparation chamber 6 along the loading path 7. At the same time, the required amount of dry product is also fed through the loading path 7 to the chamber 6. The amount of dry product supplied is regulated depending on the composition and consistency of the post-alcohol stillage, the type of drying chamber, the type of bearing surface, and the like. For a wide range of post-alcohol stillage stillage used, the optimum value of the amount of dry product is 40-60% of the mass flow rate of the original stillage. Previously, before feeding into the preparation chamber, the dry product is crushed to a particle size of not more than 1 mm.

The post-alcohol distillery stillage and dry product are mixed in the chamber 6 until a homogeneous mixture is formed, after which the formed mixture with a given dry matter content is taken out of the chamber 6 along the discharge path 8. Using a dispensing unit 4 connected to the discharge path 8, a continuous unit 4 is formed on the supporting surface 12 the stillage layer is not more than 2 mm, and the stillage formed in this way is sent to the dryer 1 for drying. Before the formation of the stillage, the bearing surface is moistened with a substance that prevents adhesion of the stillage to the surface, for example measures edible vegetable oil. Because the mixture formed essentially consists of 50% of the particles of the dry product moistened with the initial liquid post-alcohol distillery stillage, the drying process of such a mixture reduces to drying the outer surface of the particles and is therefore significantly intensified.

After drying to the required condition, the dried stillage is fed to the storage hopper 9, where it is separated from the bearing surface 12 by means of a cutting scraper 10, and the resulting dry product is partially returned via the recirculation line 11 to the preparation chamber 6, and the remaining dry product is discharged for technological purposes.

Thus, the proposed technical solution reduces the dimensions of the process equipment, simplifies the process, increases the uniformity of the stillage composition and reduces the time of its preparation before drying, and drying itself.

Information sources

1. Patent of Russia No. 2204263, IPC A23K 1/06, 2003

2. Alcohol bard. Recycling technology. "Food Industry" No. 3, 2004, pp. 54-55.

Claims (6)

1. A method of preparing a dry vinasse stillage, including a preliminary stage of preparing the initial post-alcohol vinasse vinasse for drying, a stage of increasing the dry matter content in it and then drying the vinasse to obtain a final dry product, characterized in that the preliminary preparation stage is completed by an additional operation of forming vinasse as a continuous layer on the bearing surface, and after receiving the dry product, part of it in the recirculation mode is fed to the stage of increasing the solids content in the original bard, and Solutions of the solids content are combined with the stage of preparation of the initial stillage. 2. The method according to claim 1, characterized in that the dry product is fed to the stage of increasing the solids content in the initial post-alcohol stillage in an amount equal to 40-60% of the mass amount of the original stillage. 3. The method according to claim 1, characterized in that the dry product is ground to a particle size of not more than 1 mm before being fed to the stage of increasing the solids content in the initial post-alcohol bard. 4. The method according to claim 1, characterized in that the drying process is carried out in a field of radiant energy, and the thickness of the continuous layer is chosen no more than 2 mm 5. The method according to claim 4, characterized in that the bearing surface before the operation of forming the stillage is wetted with a substance that prevents adhesion of the stillage to the surface, for example, edible vegetable oil. 6. Installation for the preparation of dry vinasse, containing a drying apparatus with inlet and outlet sections, a dispensing unit located on the inlet side, a solids content increasing unit and a preparation chamber for the initial post-alcohol stillage vinas with loading and unloading paths, and a storage hopper on the side of the outlet section characterized in that the dispensing unit is directly connected to the discharge path of the preparation chamber, and the storage hopper is equipped with a cutting scraper and communicated with a recirculation line to the loading path original vinasse ki preparation chamber to form a unit increase dry matter content.