SI9400139A - Process and device for producing concentrated extract of albumen from liquid part of manure - Google Patents

Abstract

The invention relates to a process and also an apparatus for producing a concentrated protein extract from the liquid phase of slurry (liquid manure). The latter is substantially freed from solids by centrifugation and is enriched with a rapidly-growing yeast having a high carbon content, a high oxygen proportion and containing nitrogen and hydrogen, the slurry being circulated (3, 4) under the action of a slight superatmospheric pressure in two vessels (1, 2) at a temperature of about 37@ Celsius up to the formation of assimilated protein so that the remaining liquid can be taken off as a purified product (7, 8). <IMAGE>

Description

Process and apparatus for producing concentrated protein extract from liquid portion of slurry

The invention relates to a process and apparatus for the biological restoration of a liquid slurry for the purpose of purification of a slurry and for the recovery of basic value substances.

From an ecological point of view, biological methods for purifying livestock excrement in complexly constructed installations are recommended. Aerobic procedures are known in which this desirable purification is achieved through the shared family life of microorganisms. With the constant addition of air-oxygen, the living conditions are reached to multiply microorganisms very quickly and thus cause biological conversion of slurry components. In the so-called underwhelming process, water can be separated from the bottom at the end of the process, but the residue can be consumed e.g. as fertilizer. Part of this draft (sludge) is returned as a catalyst with a return to further process.

DD 146 616 discloses a process for the preparation of a concentrated extract of a protein from a slurry with the addition of fast-growing yeast with a high content of oxygen, nitrogen and hydrogen and, after analyzing the slurry, dosed microelements below 30 to 40 hundred. Celsius and at a pH between 3 and 8. This process takes a time of 3 - 15.

ur.

DD 41 20 143 - C 1 describes a device for the biological treatment of slurry and similar organically uncleaned liquids, in which a container with a slurry and a built-in mixer is housed around the vertical axis, in which there are mixing elements with a directing function. These mixing elements, which are formed by tilting lattice panels, which are mounted in a definite angle to the rotary axis and are transversely diverted when rotated, rotate into the slurry. The purpose of this measure is to create as much space as possible for micro-organisms to settle in order to improve the purification effect.

DE 33 19 276 - A 1 - describes a process for the irradiation of a slurry in which a certain amount of air is bubbled from below and one other amount of air at desired intervals and by the formation of large bubbles, is added. Thus, mild and alternative pipe-effect calculations are performed.

The treatment of slurry in numerical steps is known from DE 32 43 103 - A 1 -.

It is an object of the present invention to provide a stepwise process for obtaining a concentrated extract of a protein from a slurry from which a solid has generally been removed prior to processing.

In order to accomplish this task, the present invention provides a stepwise step based on the requirement of 1.

The basic idea behind this process is that highly productive yeast has the ability, biogenic elements from organic solids of animal excreta, to actively assimilate and in this process accumulate a significant amount of biological mass with a high amount of protein, up to 60% of dry matter. This process also achieves a high cleaning rate of the remaining liquid. Some raw materials are needed to grow this yeast - compounds that contain carbon-hydrogen compounds such as paraffins, wood hydrolysates, ethanol, natural gas, and others. Yeast cells do not aggregate during fermentation and can then be eliminated as soon as the required concentration of the yeast is reached. The composition of the yeast may preferably contain 43% hydrocarbon, 30% oxygen, 7.5% nitrogen, 6.5% hydrogen, 1.5% phosphorus, 1% sulfur, 0.5% magnesium and 8% ash, always referring to the dry matter. . The analysis is shown in the table below:

Component of Carbon .. Oxygen ... Nitrogen ....

Hydrogen ...

Phosphorus .. Sulfur .. Magnesium Ash ...

Content in% dry matter

............................ 43

............................ 30

............................. 7.5

a .... * .. · .. ·. ·. ···· .. ·. ·· ... · 6.5

............................. 1.5

............................. 1

............................ .0.5

............................ .8

Ash contains: Mg, Cu, Fe, Mn, Mo, Zn, Ca, K and Na. The slurry contains, as can be seen from the table, all the elements except the hydrocarbon necessary for the cultivation of the control yeast. Zinc and manganese occur in small quantities.

Elements

The amount of yeast grown on the basis of n-paraffin in mg / 1

Amount in mg / 1 slurry

N ....... . . ............ 300 ......... ..... 700 P ....... . . . ........... 100-150 ..... ..... 350 K. ........ ............ 120 ......... ..... 200 Mg ........ ............. 20. ........ . . . ...... 30 Fe ........ . . ........... .7 -IO ...... ...... 16 Zn ........ .............. 3 - 5 ... . . ... 1 - 2

.3,

Mn .........

CU ....... «n

Sugar ....

.0.5 .0.01

The most favorable pH value for yeast cultivation is at 4 - 4.5.

This pH is required to destroy the bacterial microflora contained in the slurry with a pH between 6 and 8.5. If these basic conditions are met, the bacterial microflora is capable of purifying the animal slurry and producing large quantities of biomass in the process.

In one case, molasses and ferrous sulphate (FeSO4) were added as the solution in the required amount in the first cleaning step in a pool filled with live mud. After a while, the biomass so grown contained 62.77, pure protein.

The purification rate of the slurry is shown in the table below: Components

in mg / 1: N D I K Mg Fe Zn Mn Cu Slurry before cleaning 237 102 264 74 0.12 0.28 0.10 In molasses 800 4 2460 394 12,4 4.0 1,2 Slurry after cleaning 20 10 360 48 11,1, - 0.1

Nitrites: None (max allowed, 0.005 mg / 1)

Nitrates: 20 mg / l (max. 45 mg / l allowed)

Chlorides: 279.9 mg / 1 (max. 350 mg / 1 allowed)

The economic value of breeding feed yeast by means of slurry, which is produced in large quantities by the mass production of pigs, poultry and cattle, is also indisputable. Comparing the cost of raising industrial yeast to basic pig slurry, we get the following values of the basic elements:

table

Raw material;

Paraffin Education:

Based on slurry

Paraffin ............

Ammonia phosphorus ......

Sodium phosphorus .......

Ammonia water ........

Potassium ..............

Zinc ...............

Manganese ..............

Sodium lye ......

1.851 ....................

2.400. ...................

3.100 ....................

. .143.3. .................

. .240 ................. . . .

1.045,8 ..................

1.170 ....................

..579 ....................

1,851

500

600

1,000

Sum of Units 10,529.1 3,351

The economic value of slurry-based feed yeast cultivation is undeniable iv. This is clearly demonstrated by comparing the costs of raw materials and reagents required for the industrial cultivation of artificial yeast on basic paraffins and the cost of cultivating feed yeast on basic feed materials contained in the slurry.

The drawing shows schematically the basic individual elements of an inventive device and process. Displayed:

Figure 1: Side view of this device

Figure 2: Top view of the second copy mode of one device

Drawing 3: front view of the device according to Figure 3, and Drawing 4: one facing a side-by-side view of the drawing 3.

In order to carry out the present invention, at least two receptacles 1 + 2 are provided according to the exemplary example of Figure 1, the interior spaces of which are then interconnected by pipes 3 + 4. These 3 + 4 pipes are connected with one end at the bottom of one container and the other end at the top of the other container. On the upper side of both 1 + 2 vessels, 5 + 6 connections are provided to create air overpressure and reduce it in the 1 + 2 vessels. At the bottom of the 1 + 2 vessels, there are 7 + 8 outflows for the fluid. At least one container i is fitted with 9 + 10 connections for devices for dosing additional elements - substances used in this process. In this embodiment, a separate increase in the internal pressure in the vessels is then made by the multidirectional valve in port 6 and the associated pipe 5. The source of the air pressure is not shown in the drawing. The air is fed through the multi-way valve and the connector pipe 5 into the tank 1 or directly into the tank 2.

The device operates as follows;

Both containers 1 and 2 are filled with slurry, which has been cleaned by centrifuge from all solids prior to filling. Filling is done to the pre-marked level. Slurry is added to the slurry in an amount determined empirically beforehand. The control control valve directs the air pressure to one of the two vessels 1 and 2. In this container, a small air pressure is formed which causes the amount of slurry from one vessel through one of the two pipes 3 or 4 to flow out (push) into the other. container. The special construction of the 3 + 4 pipe results in the displaced fluid flowing from the lower compartment of one container to the upper compartment of the other container. With the help of valves mounted on the outlet of the 3 + 4 pipe, the upper part of the liquid slowly flows into the 3 + 4 pipe and thus creates a jet at an angle of 30 degrees to the level surface of the liquid in the lower part of the adjacent vessel, this jet disperses the air flowing from it. pressurized containers to cause fluid to mix in the container under normal pressure. this mixing process prevents the formation of foam while also flooding the yeast, so no chemical constituents need to be added to prevent foam formation. At the same time, however, the final product is free of these additional chemical ingredients.

In the drawing of this embodiment, only two 3 + 4 flow pipes are marked between the 1 + 2 vessels. To optimize this stepwise process, the number of these connecting pipes can be arbitrarily increased, along the entire length of the 1 + 2 vessels. It is recommended that these 3 + 4 pipes be so designed as to form an angle of 45 degrees to the vertical axis, in order to achieve the aforementioned jet of fluid from the pipes in the upper region of the vessel, than 30 degrees. The drawing shows a schematic illustration of the construction. However, the optimum performance of the device must be determined only after trials.

The device according to the drive example and drawings 2 to 4, consists of two parallel vessels 1 + 2 connected by pipes 3 + 4 and 3a + 4a respectively. Pipes 3 + 4 and 3a + 4a, respectively, are inclined to one another and connected in such a way that each pipe with one end in the lower part of one container and the other end in the upper area of the other container is connected. this is shown in Figure 2. In the front of the container 2 there is a contact port 11. At the other end of the same container 2 there is a drainage port 12. The container 1 is additionally equipped with a port 9 which is used for heating the liquid. Both 1 + 2 containers also have connectors 10 for additionally adding dosage and for supplying air. The accessories of the device such as pumps, separators, dryer, sterilizer, etc. are not specifically marked in the drawing. These equipment are standard products of the machine industry. Construction material for containers 1 + 2, pipe connections 3 and 4 respectively. 3a and 4a are steel.

List of components:

1 Dishes 8 Iztok 2 Dishes 9 Heating connection or 3 Tube for additional substances 3a Tube 10 Air inlet connector 4 Tube or for additional substances 4a Tube 11 Inflow connection 5 Connector 12 Drain connection 6 Connector 7 Iztok

For SOJCIC OTMAR and

LuHRS PETRA

Claims (9)

PATENT APPLICATIONS: A process for the production of a concentrated protein extract from a slurry by the addition of fast-growing yeast with a high content of nitrogen, oxygen, hydrogen and carbon, and after analysis of the slurry, of precisely dosed microelements, characterized in that the yeast is added to a slurry previously freed from by means of a solids centrifuge, to treat the slurry at a temperature of between 30 and 37 degrees Celsius under the influence of a small air pressure, to form a protein assimilate, at accelerating and soothing intervals, and to discharge the liquid again at the end of the process. 2. A process according to claim 1, characterized in that the mixing is carried out in small partial circulations between large soothing quantities. A device for copying this process according to claim 1, characterized in that it contains - at least two receptacles (1 and 2) whose inner spaces are then interconnected and interchangeable with the pipes (3 and 4), with one end at the bottom of one container and the other end at the upper part of the other container, - connections (5 and 6) for separately increasing or decreasing the air pressure in both vessels (1 and 2), - fluid outlet closures 7, 8 and 12, - connection (9, 10) for the dosage delivery of additional substances Apparatus according to claim 3, characterized in that the two vessels on the upper part are connected to each other by an additional pipeline containing inside the shut-off valve. Device according to claim 3 and 4, characterized in that the two vessels (1 and 2) are connected to each other by tubes (3 and 4 or 3a and 4a) at an angle of 45 degrees. Device according to Claims 1 and 3 to 5, characterized in that / are - the inner spaces of two, longitudinally and parallelly arranged vessels (1 and 2), at least in one area thereafter, the pipes (3, 4 and 3a, 4a respectively) ) interconnected, with one end at the bottom of one container and the other end at the upper part of another container, - at least one container (2) has an inlet connection (11) for the slurry at its end and at least one container (1) opposite - at least one container (1) provided with a connection (9) for heating and both two receptacles (1 and 2) with connections (10) for supplying air and increasing the air pressure inside the two vessels. . Device according to claim 6, characterized in that the interior spaces of the vessels are connected to each other by pipes (3, 4, or 3a, 4a) in several sections. Apparatus according to claim 6, characterized in that the tubes (3 and 4 and 3a and 4a, respectively) connect the two vessels are arranged in several sections along the entire length. Apparatus according to claims 6 and 8, characterized in that the inlet port (11) for the slurry is located at one end of the tank (2) and the drain port (12) for the fermenter at the other opposite the end of the tank (1).