JPH09271315A - Heat-treatment of discharged blood of livestock or the like and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for heat-treating a blood of a livestock, etc., capable of preventing the generation of foul smell and a device from the scorching of the blood component by continuously heat-treating the discharged blood, and a device therefor. SOLUTION: This method for heat treating a discharged blood of a livestock, etc., is to fill a boiling vessel 1 with water, heat the water close to boiling point thereof, rotate a screw conveyer 2, charge the blood 41 from a charging port 4 and at the same time inject a steam 51 form a steam injecting port 5, transfer the blood 41 in a direction to an opening part 11 by a rotation of the screw conveyer 2, discharge the gelled blood component 41a from the opening part 11, and separate the blood component 41a from water in a separating vessel.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As a final treatment method of blood discharged from livestock slaughterhouses, there are methods such as chemical production and conversion into feed or fertilizer, and wastewater treatment and disposal. Most of the collected blood is water, and because of its large volume, it costs too much to carry it to the final treatment site, such as a special vehicle, and it also accumulates until it reaches the amount that can be carried, and then it produces a foul odor. .

As a countermeasure against these problems, there is a method of reducing the volume by heat-treating with a boil device to cause gelation and separation from water. The conventional boiling device is a batch processing device that is put into a boil tank after being accumulated and is heated, and the blood component is gelated and then poured into a separation tank to separate gelated blood and water.

[0004]

However, in order to perform heat treatment by such a batch processing apparatus, it is necessary to accumulate until a certain amount, and therefore a bad odor is generated during the accumulation. was there. Also,
Since the blood component is seized on the inner wall of the boil tank, there is a problem that labor is required for maintenance and maintenance and the service life of the device is shortened. The present invention has been made in view of the above problems, and a method for heat treating blood of livestock or the like, which can prevent the generation of a foul odor by continuously heat treating the discharged blood and prevent the blood component from burning into the device. And a heat treatment apparatus thereof.

[0005]

Therefore, according to the present invention, a method for heat treating blood discharged from livestock or the like is provided in which a boil tank is filled with water and overheated, and then the discharged blood is charged into the boil tank and steam is discharged. Is injected, and these are agitated to sequentially eject gelated blood components.

In addition, a heat treatment device for blood discharged from livestock,
A boil tank for charging the discharged blood, a heating means for overheating the boil tank, a charging port for charging blood into the boil tank, steam provided in the boil tank in the vicinity of the charging port. It comprises a steam inlet for injecting, a stirrer for stirring the inside of the boiling tank, and a discharging means for scraping blood components out of the boiling tank.

Further, the apparatus for heat treating blood discharged from livestock and the like is provided with a substantially cylindrical boiling tank, an overheating means for overheating the inside of the boiling tank, and a longitudinal length of the boiling tank which is housed in the boiling tank. A spiral screw conveyor that rotates around a direction, a rotation drive unit that rotates the screw conveyor, an inlet provided at the bottom of the boil tank for introducing blood into the boil tank, and a proximity to the inlet. And a steam injection port for injecting steam into the boiling tank, the charging port is arranged at a position away from the superheating means, and steam injected from the steam discharging port is discharged from the charging port. It is designed so that it can be ejected toward the input blood.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the heat treatment method of the present invention, a boil tank is filled with water and boiled, and then blood is introduced, and at the same time, steam is blown from a steam inlet provided near the blood inlet. In order to prevent the water temperature from dropping due to the addition of water, the boiling component is agitated while being heated to cause the blood component to gel, and at the same time, the gelled blood component is continuously discharged to the separation container for separation. As a result, it is not necessary to accumulate the blood of discharged livestock, so that it is possible to prevent the generation of offensive odors by sequentially taking it into the heat treatment device, and the heat treatment before partial solidification facilitates its handling. . Also, since the blood is not directly overheated, it is possible to prevent the blood from burning into the boil tank, which makes maintenance easy.
The service life can be extended as compared with the 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 the present embodiment has a cylindrical boil tank 1 having an opening 11 at the top and installed obliquely, and is wound around the outer circumference of the boil tank 1. A steam chamber 3 which is provided in order to superheat the inside of the boiling tank 1 by injecting steam therein, a spiral screw conveyor 2 which is housed in the boiling tank 1 and rotates about its longitudinal axis, and a screw conveyor 2 A rotary drive unit 21 for rotating the pump, a feed port 4 provided in the lower portion of the boil tank 1 for feeding blood into the boil tank 1, steam provided near the feed port 4 and injected into the boil tank 1. A steam inlet 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 inside of the boil tank 1 after the heat treatment, and an opening 11 provided outside the boil tank 1. A 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 boil tank 1.

The inlet 4 is provided at a position apart from the steam chamber 3 that overheats the inside of the boiling tank 1 to prevent the blood to be introduced from burning near the inlet 4.

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

The lower end of the boil tank 1 is pivotally supported so that its inclination angle can be adjusted, and the boil tank 1 is efficiently discharged depending on the discharge capacity of the screw conveyor 2 and the gelled state of the heat-treated blood. So that it is fixed.

In the steam chamber 3 that superheats the inside of the boil tank 1, a steam inlet 31 is provided in the lower part of the steam chamber 3 for injecting steam into the steam chamber 3, and a drain port 32 for discharging steam that has cooled to become water drops. 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 boiling tank 1 so that the heat is not directly transmitted to the vicinity of the charging port 4 while leaving the lower part thereof.

The screw conveyor 2 has an upper end connected to the rotary drive unit 21, and a lower end bearing a rotary shaft 22 borne by the bottom surface of the boiling tank 1, and a spiral ridge provided on the outer peripheral portion of the rotary shaft 22. 23, and the outer edge of the protrusion 23 is provided so as to be close to the inner peripheral surface of the boiling tank 1. By rotating the screw conveyor 2, the boiling tank 1
The blood and steam that are put into the water inside are stirred and heat-treated by this, and the blood component gelled by the heat-treatment is discharged from the opening 11.

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

As shown in FIG. 2B, the screw conveyor 2 is rotated, and then the blood 41 is charged into the boiling tank 1 through the charging port 4, and at the same time, the steam 51 is discharged from the steam injection port 5.
Inject. As a result, the steam 51 is jetted toward the introduced blood 41, and the temperature of the blood 41 is increased by being stirred.

As shown in FIG. 2 (c), the blood 41 whose temperature has risen is moved in the direction of the opening 11 by the rotation of the screw conveyor 2, and the temperature of the blood 41 is further increased by the overheating of the steam chamber 3. It will be. As a result, the blood 41 is rapidly coagulated to form a gel blood component 41 a, 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 a level of sewage that can be sufficiently treated by the sewage treatment apparatus.

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

As shown in FIG. 2 (d), when the heat treatment apparatus is stopped, the blood 41 is first stopped, the steam 51 is injected, the screw conveyor 2 is rotated, and the boil tank 1 is overheated. Let As a result, most of the blood component 41a in the boil tank 1 is discharged to the outside of the boil tank 1, leaving only water 61. Next, the injection of the steam 51, the rotation of the screw conveyor 2 and the overheating of the boiling tank 1 are stopped, and the water is drained from the drain port 62. By stopping this heat treatment apparatus by this procedure, blood 4
It is possible to prevent 1 from burning into the boiling tank 1 and to easily maintain and maintain the heat treatment apparatus.

In the above embodiment, the heating means for the boiling tank was steam, but the heating means is not limited to this, and other heating means such as electric heating or hot air from the boiler may be used.

[0023]

According to the present invention, the configuration is as described above.
It has the following excellent effects. (1) The generation of offensive odor can be prevented by sequentially taking in the blood of the livestock that has been input and discharged without accumulating it in the heat treatment apparatus. (2) It can be handled easily because it can be heat-treated before it is partially solidified. (3) Since the blood is not directly overheated, it is possible to prevent the blood from burning into the boil tank, which facilitates cleaning and prolongs the service life of the conventional heat treatment apparatus.

[Brief description of 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 blood heat treatment method according to the present invention.

[Explanation of symbols]

 1 ... Boil tank 11 ... Opening 12 ... Exhaust port 2 ... Screw conveyor 21 ... Rotating drive unit 22 ... Rotating shaft 23 ... Ridge 3 ... Steam chamber 31 ... Steam inlet 32 ... Drain port 33 ... Heat insulation material 4 ... Inlet port 41 ... Blood 41a ... Blood component 5 ... Steam inlet 51 ... Steam 6 ... Water inlet 61 ... Water 62 ... Drain port 7 ... Separation tank

Claims (6)

[Claims] 1. A boil tank is filled with water and overheated,
A heat treatment method for discharged blood of livestock or the like, characterized in that discharged blood is put into the boiling tank and steam is injected to stir the discharged blood components to sequentially discharge gelated blood components. 2. A boil tank for charging discharged blood,
An overheating means for overheating the boil tank, an inlet for introducing blood into the boil tank, a steam inlet for injecting steam into the boil tank, which is provided in the vicinity of the population, and the boil tank A heat treatment device for discharged blood of livestock or the like, which comprises a stirring device for stirring the inside, and a discharging means for discharging a blood component to the outside of the boil tank. 3. A substantially cylindrical boil tank arranged obliquely, a heating means for overheating the inside of the boil tank, and a helical screw housed in the boil tank and rotating about its longitudinal axis. A conveyor, a rotation drive unit for rotating the screw conveyor, an inlet provided in the lower part of the boil tank for introducing blood into the boil tank, and a steam provided in the vicinity of the inlet for supplying steam into the boil tank. And a steam injection port for injecting the steam into the blood vessel, the injection port being disposed at a position distant from the superheating means, and the steam injected from the steam injection port can be injected toward the blood injected from the injection port. A heat treatment device for blood discharged from livestock and the like, which is provided in the. 4. The heat treatment apparatus for discharged blood of livestock according to claim 3, wherein the inclination angle of the boil tank is adjustable. 5. The heat treatment apparatus for discharged blood of livestock or the like according to claim 3, wherein the heating means of the boiling tank is a steam chamber wound around the boiling tank. 6. The heat treatment apparatus for discharged blood of livestock according to claim 3, further comprising a scrubber unit for sucking vapor discharged from the boil tank.