JP2864368B2 - Method and apparatus for heat treatment of blood discharged from livestock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for heat-treating blood discharged from livestock or the like, which performs an intermediate treatment before final processing such as dumping or chemical processing of blood discharged from a slaughterhouse of livestock or the like. It is about.

[0002]

2. Description of the Related Art As a final treatment method of blood discharged from a slaughterhouse of livestock, there is a method of converting the blood into feed or fertilizer, or a method of treating wastewater and discarding it. Most of the collected blood is water, and because of its large volume, the transportation cost of a dedicated vehicle or the like is too high to transport it to the final treatment plant, and since it is transported after it is collected to the amount that can be transported, an odor is generated. .

[0003] As a countermeasure against these, there is a method of reducing the volume by heat treatment with a boiler to cause gelation and separation from moisture. A conventional boil apparatus is a batch processing apparatus that puts it into a boil tank after being accumulated, overheats it, gels blood components and then flows it into a separation tank to separate gelled blood and water.

[0004]

However, in order to perform the heat treatment by such a batch processing apparatus, it is necessary to accumulate a certain amount of the heat, which causes a problem that a bad smell is generated during the accumulation. was there. Also,
The blood component burns on the inner wall of the boiler tank, which requires labor for maintenance and maintenance, and shortens the service life of the apparatus. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has a method for heat-treating blood of livestock or the like, which can continuously heat-treat discharged blood to prevent generation of offensive odor and prevent burning of blood components in the apparatus. And a heat treatment apparatus therefor.

[0005]

Therefore, according to the present invention, a method for heat-treating blood discharged from livestock or the like is performed by filling a tank disposed at an angle with water, heating the tank, and then discharging the blood. Injecting blood into the lower part of the boil tank and injecting steam,
These are stirred and moved upward in the inclined direction so that the gelled blood components are sequentially discharged from the upper portion of the boil tank .

Further, a heat treatment apparatus for blood discharged from livestock or the like is
A boil tank for injecting the discharged blood which is arranged in an inclined manner , a heating means for heating the boil tank, and
An inlet for introducing blood into a lower portion of the boiler, a steam inlet provided in close proximity to the inlet for injecting steam into the boil tank, and moving the blood in the inclined direction while stirring the boil tank.
Stirrer for ascending and transferring blood components to the boil tank
And a discharge means which is drawn out from the upper part of the upper part .

Further, a heat treatment apparatus for blood discharged from livestock or the like is provided with a substantially cylindrical boil tank disposed at an angle, a heating means for heating the inside of the boil tank, and a longitudinal section housed in the boil tank to extend the boil tank. A spiral screw conveyor that rotates around a direction, a rotation drive unit that rotates the screw conveyor, an input port provided at a lower part of the boil tank to input blood into the boil tank, and close to the input port. And a steam inlet for injecting steam into the boil tank, wherein the inlet is disposed at a position away from the superheating means, and steam injected from the steam inlet is supplied from the inlet. It is designed so that it can be sprayed toward the injected blood.

[0008]

Heat treatment method of the embodiment of the present invention is inclined
The placed boiled tank after boiling filled with water, Bo
Blood is injected into the lower portion of the boiler tank, and steam is injected from a steam injection port provided in the vicinity of the blood inlet to prevent a drop in water temperature due to the injection of blood and to overheat the boiler tank. While agitating the blood while moving the blood upward in the inclined direction to gel the blood component, the gelled blood component is scraped out from the upper portion of the boil tank and continuously discharged to the separation tank for separation. It is. This eliminates the need to accumulate the blood of the excreted livestock and the like, so that it is possible to prevent the generation of offensive odor by sequentially taking the blood into the heat treatment apparatus, and to facilitate the handling because the heat treatment is performed before partial coagulation. . In addition, because it does not directly overheat the blood, it is possible to prevent blood from burning in the boiler tank, so maintenance is easy,
The service life can be extended as compared with a conventional heat treatment apparatus.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a blood heat treatment apparatus according to the present invention, and FIG. 2 is a schematic view showing a blood heat treatment method according to the present invention.

As shown in FIG. 1, the heat treatment apparatus of this embodiment has a cylindrical boil tank 1 having an opening 11 at an upper portion and installed at an angle, and is wound around the outer periphery of the boil tank 1. A steam chamber 3 for injecting steam into the boil tank 1 to heat the inside thereof, a screw conveyor 2 housed in the boil tank 1 and rotating around its longitudinal direction, and a screw conveyor 2 A rotary drive unit 21 for rotating the boiler, an input port 4 provided at the lower part of the boil tank 1 for feeding blood into the boil tank 1, and a steam provided near the input port 4 for injecting steam into the boil tank 1. A steam injection port 5, a water supply port 6 for supplying water for heat treatment into the boil tank 1, a drain port 62 for discharging water from the boil tank 1 after the heat treatment is completed, and an opening 11 provided outside the boil tank 1 Separation tank 7 for separating blood components discharged from water from water, Provided above the Le vessel 1 exhaust port 1
2 and a scrubber unit (not shown) for purifying exhaust gas from the boiler tank 1.

The inlet 4 is provided at a position distant from the steam chamber 3 which heats the inside of the boiler tank 1, and prevents blood to be injected from burning around the inlet 4.

A steam injection port 5 for injecting into the boil tank 1 is provided at a position opposite to the injection port 4 so that steam can be injected from the injection port 4 toward the blood injected into the boil tank 1. Has been.

The boil tank 1 is supported at its lower end so as to adjust its inclination angle, and is efficiently discharged by the discharge capacity of the screw conveyor 2 and the gelled state of the heat-treated blood. Adjusted and fixed.

A steam chamber 3 for heating the inside of the boiler tank 1 has a steam inlet 31 provided at a lower portion of the steam chamber 3 for injecting steam into the steam chamber 3 and a drain port 32 for discharging steam which has been cooled to form water droplets. And a heat insulating material 33 that covers the outer periphery of the steam chamber 3 and prevents the steam injected into the steam chamber 3 from cooling. Further, the mounting position of the steam chamber 3 is wound around the outer peripheral surface of the boil tank 1 except for the lower portion so that the heat is not transmitted directly to the vicinity of the inlet 4.

The screw conveyor 2 has a rotating shaft 22 having an upper end connected to a rotation drive unit 21 and a lower end supported on a bottom surface in the boiler tank 1, and a spiral ridge provided on an outer peripheral portion of the rotating shaft 22. The outer edge of the ridge 23 is provided so as to approach the inner peripheral surface of the boil tank 1. By rotating the screw conveyor 2, the boil tank 1
The blood and the steam introduced into the water in the inside are agitated, thereby performing heat treatment, and the blood component gelled by the heat treatment is discharged from the opening 11.

Next, a method for heat-treating blood of the present invention by the operation of the heat-treatment apparatus will be described. As shown in FIG. 2A, water 61 is supplied from the water supply port 6 to fill the boil tank 1. Steam 51 is injected into the steam chamber 3 from the steam inlet 31 to heat the boil tank 1 to near the boiling temperature.

As shown in FIG. 2 (b), the screw conveyor 2 is rotated, and then the blood 41 is injected into the boil tank 1 through the inlet 4 and simultaneously the steam 51 is injected through the steam inlet 5
Inject. As a result, the vapor 51 is jetted toward the introduced blood 41, and the blood 51 is stirred and the temperature of the blood 41 rises.

As shown in FIG. 2 (c), the blood 41 whose temperature has risen moves in the direction of the opening 11 due to the rotation of the screw conveyor 2, and the temperature rises further due to the overheating by the steam chamber 3. Will be. As a result, the blood 41 rapidly coagulates and becomes a gel-like blood component 41a, which is discharged from the opening 11 and falls into the separation tank 7. Since the discharged blood component 41a still contains a large amount of water, it is separated from the water by the separation tank 7.

The separated water becomes sewage at a level that can be sufficiently treated by the sewage treatment apparatus.

Since a steam containing a lot of odors and impurities rises from the opening 11 in the boiling boil tank 1 and pollutes the atmosphere, a scrubber unit (not shown) is connected to an exhaust port 12 to exhaust air. To purify.

As shown in FIG. 2 (d), when the heat treatment apparatus is stopped, the supply of the blood 41 is first stopped, and the injection of the steam 51, the rotation of the screw conveyor 2 and the overheating of the boil tank 1 are continued. Let it. Thereby, the blood component 41a in the boiler tank 1 is almost entirely discharged out of the boiler tank 1 and becomes only the water 61. Next, the injection of the steam 51, the rotation of the screw conveyor 2 and the overheating of the boil tank 1 are stopped, and the water is drained from the drain port 62. By stopping the heat treatment apparatus according to this procedure, the blood 4
1 can be prevented from being seized in the boil tank 1, and maintenance and maintenance of the heat treatment apparatus can be easily performed.

In the above embodiment, the heating means for the boil tank is steam. However, the present invention is not limited to this, and other heating means such as electric heating or hot air from a boiler may be used.

[0023]

As described above, according to the present invention , the inclined arrangement is provided.
The blood in the boiled tank
To sequentially drain the gelled blood components from the top of the boiler tank
As a result , the following excellent effects can be obtained. (1) It is possible to prevent the generation of offensive odors by sequentially taking in the blood of the livestock and the like that have been input and discharged without accumulating them in the heat treatment apparatus. (2) Since the heat treatment can be performed before partial solidification, the handling becomes easy. (3) Since the blood is not directly overheated, it is possible to prevent the blood from burning in the boil tank, so that it is easy to clean and its service life is longer than that of the conventional heat treatment apparatus.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a blood heat treatment apparatus according to the present invention.

FIG. 2 is a schematic view showing a method for heat-treating blood according to the present invention.

[Explanation of symbols]

 1 boil tank 11 opening 12 exhaust port 2 screw conveyor 21 rotary drive 22 rotary shaft 23 ridge 3 steam chamber 31 steam inlet 32 drain port 33 heat insulating material 4 inlet 41 blood 41a blood component 5 steam inlet 51 steam 6 water supply 61 water 62 drain 7 ‥‥‥ Separation tank

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A22B 7/00 A47J 27/14-27/16 JICST file (JOIS)

Claims (6)

(57) [Claims] 1. A After heating filled with water inclined with arranged boiled vessel, the discharged blood was bubbler vapors with charged into the bottom of the boiling vessel, the inclined They were stirred In the direction to transfer the gelled blood components
A method for heat treating blood discharged from livestock or the like, wherein the blood is discharged sequentially from the upper part of a boil tank . 2. A boil tank for injecting discharged blood which is arranged in an inclined manner , a heating means for heating the boil tank, an inlet for injecting blood into a lower portion of the boil tank, and a vapor bubbler outlet for bubbler steam into the boiling vessel provided near the front of the blood while stirring the boiling bath
A heat treatment apparatus for blood discharged from livestock or the like, comprising: a stirring device for ascendingly transferring the blood in the inclined direction; and a discharge means for discharging a blood component from an upper portion of the boil tank. 3. A boil tank having a substantially cylindrical shape disposed obliquely, heating means for heating the inside of the boil tank, and a helical screw housed in the boil tank and rotating around its longitudinal direction as an axis. A conveyor, a rotation drive unit for rotating the screw conveyor, an input port provided at a lower portion of the boil tank for inputting blood into the boil tank, and a steam provided in proximity to the input port to supply steam to the boil tank. The injection port is disposed at a position away from the superheating means, so that the steam injected from the steam injection port can be jetted toward the blood injected from the input port. A heat treatment device for blood discharged from livestock, etc. 4. The apparatus according to claim 3, wherein the inclination angle of the boil tank is adjustable. 5. The apparatus for heat treating blood discharged from livestock or the like according to claim 3, wherein the means for heating the boil tank is a steam chamber wound around the boil tank. 6. The apparatus for heat treating blood discharged from livestock or the like according to claim 3, further comprising a scrubber unit for sucking steam exhausted from the boil tank.