DD225609A1 - Method and device for mixing or neutralizing solids parts - Google Patents

Method and device for mixing or neutralizing solids parts Download PDF

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Publication number
DD225609A1
DD225609A1 DD25937884A DD25937884A DD225609A1 DD 225609 A1 DD225609 A1 DD 225609A1 DD 25937884 A DD25937884 A DD 25937884A DD 25937884 A DD25937884 A DD 25937884A DD 225609 A1 DD225609 A1 DD 225609A1
Authority
DD
German Democratic Republic
Prior art keywords
liquid
mixing
mixer
neutralizing
horizontal
Prior art date
Application number
DD25937884A
Other languages
German (de)
Inventor
Rolf Elspass
Gerald Caspers
Frank Neupert
Joerg Schmidt
Original Assignee
Thaelmann Schwermaschbau Veb
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thaelmann Schwermaschbau Veb filed Critical Thaelmann Schwermaschbau Veb
Priority to DD25937884A priority Critical patent/DD225609A1/en
Publication of DD225609A1 publication Critical patent/DD225609A1/en

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Abstract

The invention relates to a method for continuously neutralizing concentrates with a 3-10% dilute sodium hydroxide solution and a device with which both the mixing of solid particles, z. As extraction shot with a liquid, as well as neutralizing, z. As protein concentrate with liquids with high p H values, is continuously possible. The mixing and neutralization should be homogeneous, without densification of the substance and without moisture gradient formation and avoiding protein losses. The device according to the invention is characterized by a ring mixer inclined to the horizontal up to 6 and equipped with adjustable nozzles which have an opening angle of 60 and a stripper deviating from the horizontal and with inlet and outlet devices. The nozzle-equipped liquid feed tube located in the humidification zone is adjustable according to the product to be treated.

Description

Field of application of the invention
The invention relates to a method for the continuous neutralization of protein concentrates and a device with which both neutralizing, z. As protein concentrates with high pH liquids, is possible, as well as the mixing of solid particles, eg. B. Extraction shot with a liquid. The invention is preferably applicable in the food industry for processing of materials for further processing in other processes.
Characteristic of the known technical solutions
In the practice and methods for producing homogeneous products by mixing the solids. With liquids, DD-AP 100400, or neutralizing the solids, undesirable side effects occur in the form of wet clumps and lumps that cause uneven neutralization or mixing throughout the product. To circulate the solid during irrigation, mechanical mixers of various designs are used, such. B. the planetary mixer, various kneaders and Paddelschnecken. In these devices, it comes through the mechanical installations to local compaction. The consequences are tough masses and caking with moisture gradients.
In order to exclude local compaction, fluid bed mixers are also used in practice. The disadvantage of these systems, however, is that due to the different solid particles, a part of the fluidized bed is discharged through the air flow without wetting or the large solids are not agitated. The result is inconsistent humidification of the meal or neutralization of the protein concentrate.
The preparation of homogenous neutralized products by mixing the solid with the neutralizing liquid is difficult because uneven distribution of the neutralizing liquid causes unwanted by-effects such as wet accumulation and lumping, which results in uneven neutralization throughout the product , To eliminate these side effects, it is common practice in practice to neutralize large volumes of liquid at low pHs in stirred tanks. Thus, although a uniform neutralization of the entire solid is achieved, but it is necessary that the introduced liquid is separated from the solid-liquid mixture by separation devices again. As a result, a necessary space and equipment costs is required. The main disadvantage of this method, however, is that in the large excess of liquid proteins are washed out of the solid, which can not be used for the further processing of solids.
Object of the invention
It is the object of the invention to homogeneously wet extraction meal with liquid with reduced equipment expenditure or to neutralize protein concentrates continuously while avoiding protein losses.
Explanation of the essence of the invention
The invention has for its object to provide a method in which a liquid wetted, non-compressed, neutralized protein concentrate is formed in which a pH gradient occurs during wetting no pressure is exerted on the solid and no proteins during neutralization be washed out of the solid and to provide a means by which both protein concentrate can be neutralized with a Fiüssigkeitsanteil> 50 wt .-%, as well as extraction meal without compaction and moisture gradient formation is homogeneously wetted with liquids and mixed. According to the invention the object is achieved in that the circulating in a continuously rotating ring mixer protein concentrate, with a liquid content> 40Ma .-%, during the residence time of 20s to 5 min, is wetted with a liquid having a high pH directly by small liquid drops.
It is also to the invention that the zugedüste liquid consists of a 3-10% dilute sodium hydroxide solution. With the aid of a nozzle, high-pH liquids are sprayed onto the solid to be neutralized. Due to the inclination of the ring mixer enters a transport effect of the solid and a uniform neutralization in the entire solid, without proteins are dissolved out. According to the flow rate and the pH of the solid, the necessary amount of liquid is sprayed onto the solid.
It also belongs to the invention that a modified ring mixer is used for the mixing and moistening of extraction shot as well as for neutralizing protein concentrates, equipped with a continuously variable geared motor and with input and discharge devices and at an angle of 3 ° -6 ° to Horizontal is arranged inclined. In the first half of the ring mixer protrudes an adjustable and lockable according to the number of revolutions of the mixer Figuressigkeitszufüh tube with nozzles which are formed with a spray angle of 60 °. It belongs to the invention that in the mixer a fixed scraper 15 ° is arranged to the horizontal. The ring mixer has a peripheral speed below the entrainment speed of the fabric, preferably 50m / min. Due to the inclination of the mixer to the horizontal occurs a transport effect of the solid from the entry to the discharge. The marriage time is determined by inclination. The nozzle tube for Flüssigkeitsseindüsung is rotatably mounted and locked to achieve a defined spraying at different products or other peripheral speeds of the mixer, since it has surprisingly been found to be beneficial to supply small drops of liquid to the solid, instead of a
Fiüssigkeitsnebels. Moistening is short-term and even. The nozzles themselves have a spray cone of 60 ° and are arranged so that the entry device is not sprayed with liquid. The fixed, 15 ° to the horizontal arranged in the mixer scraper ensures that no solid adheres to the mixer wall and is brought closer to each revolution of the discharge. The discharged solid is free-flowing and the granules contain no liquid gradients.
embodiment
The invention will be explained in more detail with reference to embodiments and an accompanying drawing with Figs. 1 and 2.
Ground soybean meal with a mean grain diameter of 250 ^ m passes through the entry device 1 in the rotating ring mixer 2. The peripheral speed is set to 50m / min, so that a uniform circulation of the soybean is given. Due to the inclination of the mixer 2 of 3 ° relative to the horizontal, there is a transport effect, whereby the Festoff is conveyed evenly rolling to the discharge device 3, after it has been wetted in the first half of the mixer 2 through the nozzle 5 equipped with liquid supply pipe 4. By the scraper 6 deposits are removed on the mixer wall. The abandoned soybean meal has a moisture content of 8% by weight and leaves the discharge device 3 with 50% by weight.
Per hour 2000 kg of soy protein concentrate with a pH of 4.8 and a moisture content of 70Ma .-% via the entry device 1 are continuously added to the rotating ring mixer 2. Due to the inclination of the mixer 2 of 3 ° and a speed of 10U / min, the concentrate is continuously conveyed to the discharge device 3. With the help of the liquid supply pipe 4 and the nozzle 5 5% sodium hydroxide solution is continuously sprayed onto the solid. Due to the intensive mixing, a pH value of 6.6 is established over the entire solid. Since neutralized concentrate has a liquid content of about 72% by mass and can be dried directly.

Claims (2)

-ι - Invention claims:
1. A method for the continuous neutralization of protein concentrates in a mixer with neutralization liquid, characterized in that the circulating in a ring mixer protein concentrate, with a liquid content> 40 wt .-%, during the residence time of 20 s to 5 min, with a 3- 10% sodium hydroxide solution is wetted by small drops of liquid.
2. Device for carrying out the method according to item 1, and continuous mixing of extraction shot, characterized in that the device as infinitely variable, 3 ° to 6 ° inclined to the horizontal, running with Bedüsungs- and mixing zone ring mixer (2), in the Bedüsungszone with an adjustable Flüssigkeitszuführrohr (4), which is filled with nozzles (5), which have a Düsensprühwinkel of 60 ° and with a 1 5 ° to the horizontal deviating, fixedly arranged scraper (6) is formed.
For this 1 page drawings
DD25937884A 1984-01-13 1984-01-13 Method and device for mixing or neutralizing solids parts DD225609A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DD25937884A DD225609A1 (en) 1984-01-13 1984-01-13 Method and device for mixing or neutralizing solids parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD25937884A DD225609A1 (en) 1984-01-13 1984-01-13 Method and device for mixing or neutralizing solids parts
AT196484A AT384527B (en) 1984-01-13 1984-06-15 Method for continuously neutralizing protein concentrates and for continuous mixing

Publications (1)

Publication Number Publication Date
DD225609A1 true DD225609A1 (en) 1985-08-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DD25937884A DD225609A1 (en) 1984-01-13 1984-01-13 Method and device for mixing or neutralizing solids parts

Country Status (2)

Country Link
AT (1) AT384527B (en)
DD (1) DD225609A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102728281A (en) * 2012-07-04 2012-10-17 中国科学院过程工程研究所 Continuous feeding device for normal-pressure biomass pretreatment reactor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440054A (en) * 1964-03-05 1969-04-22 Griffith Laboratories Production of proteinates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102728281A (en) * 2012-07-04 2012-10-17 中国科学院过程工程研究所 Continuous feeding device for normal-pressure biomass pretreatment reactor

Also Published As

Publication number Publication date
ATA196484A (en) 1987-05-15
AT384527B (en) 1987-11-25

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