A device and process for high-temperature enzymatic hydrolysis of dead animals to make them harmless

Abstract

The invention discloses a device and a treatment process for high-temperature enzymolysis harmless treatment of dead animals, comprising an enzymolysis tank for performing enzymolysis reaction and enzyme inactivation reaction on materials after high-temperature treatment and centrifugation, the enzymolysis tank comprising a tank body, the tank body comprising an inner cavity and an interlayer outside the inner cavity, the interlayer being used for circulating steam and performing heat exchange with the inner cavity; and an adjusting mechanism being arranged in the interlayer, the adjusting mechanism being configured to control the steam to circulate in a specified area of ​​the interlayer; the steam can be controlled to circulate in the specified area of ​​the interlayer, so as to quickly perform heat exchange with the specified area in the inner cavity, reduce heat exchange loss in unnecessary areas, and improve resource utilization; a stirrer is provided with a plurality of stirring blades, and in conjunction with the function of an electric telescopic rod, the spacing between the stirring blades can be adjusted according to the liquid level in the inner cavity, so that they can all perform effective stirring work, avoid idling of some stirring blades, improve stirring effect, and thus improve enzymolysis efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of harmless treatment of dead animals, and in particular to a device and a treatment process for harmless treatment of dead animals by high-temperature enzymatic hydrolysis. Background Art

[0002] According to the Technical Specifications for the Harmless Treatment of Dead and Diseased Animals, the harmless treatment methods include incineration, chemical treatment, deep burial and sulfuric acid decomposition. The chemical treatment method is mainly a method of treating animal carcasses and related animal products in a closed high-pressure container by introducing high-temperature saturated steam into the interlayer or container of the container under the action of dry heat, pressure or high temperature and pressure; according to relevant laws and regulations, dead livestock and poultry treatment facilities should give priority to chemical treatment, fermentation and other process technologies that can achieve harmless treatment and resource utilization, support the research of new, efficient and environmentally friendly harmless treatment technologies and equipment, and enzymatic treatment can be carried out after high-temperature chemical treatment to facilitate subsequent physical and chemical drying to produce useful oils and meat and bone meal. Among them, the existing enzymatic treatment device adds materials into the enzymatic treatment tank and adds a catalyst to stir through a stirrer, and performs enzymatic treatment under a moderate temperature and pH value environment. Since each enzymatic hydrolysis requires heating and stirring the entire tank, it is easy to cause resource waste and the efficiency is relatively low. Therefore, a high-temperature chemical enzymatic harmless treatment device and a treatment process for dead animals are urgently needed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a device and process for high-temperature enzymatic hydrolysis and harmless treatment of dead animals, which can effectively solve the problems existing in the above-mentioned prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a high temperature enzymatic hydrolysis harmless treatment device for dead animals, comprising an enzymatic hydrolysis tank for performing enzymatic hydrolysis and enzyme inactivation reactions on the high temperature processed and centrifuged materials, the enzymatic hydrolysis tank comprising:

[0005] A tank body, comprising an inner cavity and an interlayer outside the inner cavity, wherein the interlayer is used for circulating steam and performing heat exchange with the inner cavity; and

[0006] A regulating mechanism is provided in the interlayer, and the regulating mechanism is configured to control the steam to circulate in a designated area of ​​the interlayer;

[0007] The interlayer includes a guide layer and a heat exchange layer, the heat exchange layer is in contact with the inner cavity, the guide layer is arranged outside the heat exchange layer, and the guide layer is in communication with the heat exchange layer; and

[0008] An air inlet and an air outlet are provided near the top of the tank body, and both the air inlet and the air outlet are connected to the guide layer;

[0009] The regulating mechanism comprises:

[0010] A plurality of sealing plates, each of which is arranged in the heat exchange layer along the vertical direction and divides the heat exchange layer into a plurality of spaces along the vertical direction;

[0011] A channel is provided between the guide layer and each space and connects the guide layer and each space. A valve is installed in the channel and the valve is used to close or open the channel.

[0012] A stirrer is used to perform stirring action in the inner cavity.

[0013] Preferably, the inner cavity is used to store meat sludge and filtrate, and the solid content in the inner cavity is ≤35%.

[0014] Preferably, the bottom end of the guide layer is connected to the heat exchange layer; and the regulating mechanism comprises:

[0015] A sealing plate, which is an annular structure and is disposed in the heat exchange layer to divide the heat exchange layer into two layers, an upper layer and a lower layer;

[0016] The power part is connected to the sealing plate and is used to drive the sealing plate to move in the vertical direction to adjust the ratio of the upper and lower layers of the heat exchange layer.

[0017] Preferably, the bottom end of the guide layer located on the air inlet side is connected to the heat exchange layer, and the top end of the guide layer located on the air outlet side is connected to the heat exchange layer;

[0018] The sealing plate is provided with a plurality of through holes, each of which is provided with a flow cavity, and a sealing ball is provided in the flow cavity. The diameter of the sealing ball is larger than the inner diameter of the through hole, and the sealing ball is configured to: block the bottom opening of the through hole in a natural state or when the gas flows downward from the top; and retreat into the flow cavity when the gas flows upward from the bottom, and form a gap between the sealing ball and the flow cavity for gas circulation.

[0019] Preferably, the agitator comprises:

[0020] A stirring shaft is arranged in the inner cavity, and its top end extends to the top end of the tank body and is connected to the stirring motor;

[0021] A plurality of stirring blades, each of which is arranged at intervals along the axis direction of the stirring shaft, and adjacent stirring blades are connected by a foldable connecting rod, wherein the stirring blade at the bottom is fixedly connected to the stirring shaft, and the remaining stirring blades are movably connected along the axis direction of the stirring shaft; an annular frame is arranged outside the stirring blade at the top;

[0022] The electric telescopic rod has a telescopic end in sliding contact with the annular frame. The electric telescopic rod is used to drive the annular frame to rise or fall, and to adjust the spacing between the stirring blades by driving the stirring blades at the top to rise or fall.

[0023] Preferably, an annular groove is provided at the top of the annular frame, and the cross-section of the annular groove is a T-shaped structure, and the telescopic end of the electric telescopic device is equipped with a T-shaped connecting block, and the T-shaped connecting block is inserted into the annular groove.

[0024] Preferably, the enzymatic hydrolysis tank also includes a controller and a liquid level meter, the liquid level meter is used to monitor the liquid level data in the inner cavity and feed back to the controller, the regulating mechanism and the electric telescopic rod are both connected to the controller, and based on the liquid level data, the controller controls the regulating mechanism and the electric telescopic rod to execute corresponding instructions.

[0025] The present invention also discloses a high-temperature enzymolysis and harmless treatment process for dead animals, which uses a high-temperature enzymolysis and harmless treatment device for dead animals, and comprises the following steps:

[0026] S1. After the material is processed in the chemical tank, the upper layer of oil and water enters the oil-water tank, and the lower layer of slag enters the separator. The bones larger than 10mm are initially screened out through the separation process and returned to the chemical tank as the raw material for the next batch of chemical reaction;

[0027] S2. The material in the oil-water tank enters the horizontal screw centrifuge to separate the oil, water and slag. The filtrate enters the enzymolysis tank, and the condensed water from the chemical tank is passed into the enzymolysis tank to adjust the solid content to ≤35%;

[0028] S3, preparing a reaction catalyst by mixing a biological enzyme preparation and sodium hydroxide, and introducing the catalyst into an enzymatic hydrolysis tank;

[0029] S4, monitoring the liquid level in the enzymatic hydrolysis tank through a liquid level meter, and feeding back the liquid level data to the controller;

[0030] S5. Based on the liquid level data, the controller issues an instruction:

[0031] Control the regulating mechanism to work and regulate the steam to circulate in the designated area of ​​the interlayer of the enzymatic hydrolysis tank;

[0032] Control the operation of the electric telescopic rod and adjust the spacing between each mixing blade;

[0033] S6. Steam is introduced into the interlayer to adjust the temperature in the inner cavity to carry out enzymatic hydrolysis and enzyme inactivation reactions.

[0034] Beneficial effects: In the present invention, by introducing the high-temperature processed and centrifuged materials into the enzymolysis tank, and cooperating with the biological enzyme preparation to carry out enzymolysis reaction and enzyme inactivation reaction, the steam can be controlled to circulate in the designated area of ​​the interlayer through the action of the regulating mechanism in the enzymolysis tank, so as to quickly exchange heat with the designated area in the inner cavity, reduce the heat exchange loss in unnecessary areas, and improve resource utilization;

[0035] Among them, in the present invention, through the action of the guide layer, the steam can be guided to be evenly distributed inside the interlayer, and through the action of the sealing plate, the heat exchange layer can be divided into a number of independent spaces. Combined with the action of the channel and the valve, the designated space can be connected to the guide layer according to demand, thereby guiding the gas to flow into the designated space and performing heat exchange on the inner cavity on one side of the designated space.

[0036] Among them, in the present invention, through the action of the annular sealing plate, the heat exchange layer can be divided into two layers, and with the action of the power part, the annular sealing plate can be controlled to move in the vertical direction, thereby adjusting the proportion of the upper and lower layers of the heat exchange layer, thereby continuously and more flexibly adjusting the area of ​​​​the steam inflow, which is more convenient and effective to use.

[0037] In addition, the present invention is provided with a plurality of stirring blades, which are connected by a foldable connecting rod and cooperate with the function of the electric telescopic rod. The spacing between each stirring blade can be adjusted according to the liquid level in the inner cavity, so that they can all perform effective stirring work, avoid idling of some stirring blades, improve the stirring effect, and thus improve the enzymatic hydrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0039] In the attached picture:

[0040] Figure 1 It is a structural schematic diagram of the enzymolysis tank of the present invention;

[0041] Figure 2 It is a plan view of the enzymolysis tank of the present invention;

[0042] Figure 3 It is a schematic diagram of the structure inside the tank body of the present invention;

[0043] Figure 4 It is a structural schematic diagram of an adjustment mechanism of the present invention;

[0044] Figure 5 It is a structural schematic diagram of an annular sealing plate of the present invention;

[0045] Figure 6 It is a structural schematic diagram of the sealing ball and the flow chamber of the present invention;

[0046] Figure 7 It is a schematic diagram of the structure of multiple stirring blades of the present invention;

[0047] Figure 8 It is a structural schematic diagram of the annular frame of the present invention;

[0048] Numbers in the figure: 1. tank body; 2. inner cavity; 3. interlayer; 31. guide layer; 32. heat exchange layer; 4. air inlet; 5. air outlet; 6. sealing plate; 7. channel; 8. valve; 9. power part; 91. drive motor; 92. screw rod; 93. connecting pipe; 94. nut; 10. through hole; 11. flow chamber; 12. sealing ball; 13. elastic part; 14. stirring shaft; 15. stirring blade; 16. electric telescopic rod; 17. first connecting rod; 18. second connecting rod; 19. stirring motor; 20. annular frame; 21. annular groove; 22. T-shaped connecting block; 23. controller; 24. liquid level meter. DETAILED DESCRIPTION

[0049] The following describes the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. The terms used in the embodiments of the present invention are only used to explain the specific embodiments of the present invention, and are not intended to limit the present invention. The following describes the embodiments of the present application in conjunction with the drawings. It is known to those of ordinary skill in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems. The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, which is only to describe the distinction between the objects of the same attributes in the embodiments of the present application when describing them. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or device containing a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or devices.

[0050] Example: Figure 1-Figure 2 As shown, a device for high temperature enzymatic hydrolysis and harmless treatment of dead animals includes an enzymatic hydrolysis tank, which is used to perform enzymatic hydrolysis and enzyme inactivation reactions on the materials after high temperature treatment and centrifugation;

[0051] Among them, the enzymatic hydrolysis tank includes:

[0052] Tank 1, reference Figure 3As shown, the tank body 1 includes an inner cavity 2 and an interlayer 3 outside the inner cavity 2; the inner cavity 2 is used to store meat pulp and filtrate, and the solid content in the inner cavity 2 is ≤35%; the interlayer 3 is used to circulate steam and exchange heat with the inner cavity 2, and an air inlet 4 and an air outlet 5 are provided near the top of the tank body 1. The steam enters the interlayer 3 from the air inlet 4, and after heat exchange with the inner cavity 2 in the interlayer 3, it is discharged from the air outlet 5 to adjust the temperature of the inner cavity 2.

[0053] For the inner layer, the interlayer 3 includes a guide layer 31 and a heat exchange layer 32, the heat exchange layer 32 is in contact with the inner cavity 2, the guide layer 31 is arranged outside the heat exchange layer 32, and the guide layer 31 is in communication with the heat exchange layer 32, and a regulating mechanism is arranged in the interlayer 3, and the regulating mechanism is configured to control the steam to circulate in a specified area of ​​the interlayer 3;

[0054] In some embodiments, reference Figure 4 As shown, the regulating mechanism includes a plurality of sealing plates 6 and channels 7. Each sealing plate 6 is arranged in the heat exchange layer 32 along the vertical direction, and divides the heat exchange layer 32 into a plurality of spaces along the vertical direction. A channel 7 is arranged between each space and the guide layer 31. A valve 8 is installed in the channel 7, and the valve 8 is used to close or open the channel 7.

[0055] During operation, the flow direction of steam is adjusted by controlling the opening or closing of valve 8. For example, when steam needs to be introduced into the lowest end of the heat exchange layer 32, except for the valve 8 at the lowest end space, the other valves 8 are closed, and the steam enters the guide layer 31 from the air inlet 4, and flows to the channel 7 at the lowest end space under the guidance of the guide layer 31, enters the lowest end space along the channel 7, and then exchanges heat with the inner cavity 2 on one side of the space to achieve local rapid heat exchange, so that the local temperature is quickly raised to the specified temperature, and the steam after heat exchange flows out from the channel 7 on the other side and flows to the air outlet 5. Since this area in the inner cavity 2 is an effective heating area and the other areas are invalid heating areas, the specified flow of steam can reduce the energy loss caused by heat exchange when the steam flows in the other areas, as well as the problem of low heating efficiency in the inner cavity 2.

[0056] In some embodiments, reference Figure 3 and Figure 5 As shown, the bottom end of the guide layer 31 is connected to the heat exchange layer 32; the adjustment mechanism includes a sealing plate 6 and a power member 9, the sealing plate 6 is an annular structure, arranged in the heat exchange layer 32, and divides the heat exchange layer 32 into two layers, the upper and lower layers; the power member 9 is connected to the annular sealing plate 6, and is used to drive the annular sealing plate 6 to move in the vertical direction to adjust the ratio of the upper and lower layers of the heat exchange layer 32;

[0057] During operation, the annular sealing plate 6 is driven by the power part 9 to move vertically according to demand, and the bottom space of the heat exchange layer 32 is adjusted to an appropriate size. The steam enters the guide layer 31 from the air inlet 4, and flows to the lowest end under the guidance of the guide layer 31 to enter the heat exchange layer 32. Due to the action of the annular sealing plate 6 above, the steam can only circulate in the designated area at this time, and then flows into the guide layer 31 from the bottom end of the heat exchange layer 32 on the other side, and flows out from the air outlet 5, thereby realizing effective heat exchange in the designated area. In addition, the operation is continuous and the adjustment is more flexible.

[0058] For the setting of the power member 9, it is only necessary to apply a vertical force to the annular sealing plate 6 to control the annular sealing plate 6 to move in the vertical direction. For example, in some embodiments, refer to Figure 1 and Figure 5 As shown, a driving motor 91 is arranged at the top of the tank body 1, and the output shaft of the driving motor 91 is arranged by a screw rod 92. A connecting tube 93 is installed on the annular sealing plate 6. The screw rod 92 is inserted into the connecting tube 93 and connected to the screw rod 92 through a nut 94 at the end of the connecting tube 93. When the screw rod 92 is connected and rotated, the connecting tube 93 can be driven to move up and down through the nut 94, thereby driving the annular sealing plate 6 to move up and down synchronously. There is a certain space in the connecting tube 93 to facilitate the up and down movement of the connecting tube 93 to accommodate the screw rod 92. Figure 1 and Figure 5 As shown, a pair of the above structures are provided to achieve stable up and down movement of the annular sealing plate 6.

[0059] In some embodiments, reference Figure 5-Figure 6 As shown, a plurality of through holes 10 are provided in the sealing plate 6, each of which is provided with a flow cavity 11, and a sealing ball 12 is provided in the flow cavity 11, and the diameter of the sealing ball 12 is larger than the inner diameter of the through hole 10, and the sealing ball 12 is configured to: block the bottom opening of the through hole 10 in a natural state or when the gas flows downward from the top; retreat into the flow cavity 11 when the gas flows upward from the bottom, and a gap is formed between the sealing ball 12 and the flow cavity 11 for gas circulation; and the bottom end of the guide layer 31 located on the side of the air inlet 4 is connected to the heat exchange layer 32, and the top end of the guide layer 31 located on the side of the air outlet 5 is connected to the heat exchange layer 32;

[0060] Among them, in order to improve the realization of steam staying in the designated area and to better carry out heat exchange, an elastic member 13 is arranged at the top of the sealing ball 12, and a downward force is applied to the sealing ball 12 through the elastic member 13. Only when the pressure below increases to a certain extent and the effect of the pressure on the sealing ball 12 is greater than its own gravity and the elastic force of the elastic member 13, the sealing ball 12 is driven to move for steam circulation.

[0061] Based on the above structure, during operation, steam enters the guide layer 31 from the air inlet 4, and under the guidance of the guide layer 31, flows to the lowest end and enters the heat exchange layer 32, and performs heat exchange in the designated area to achieve rapid heating of the designated area. After that, the steam flows upward and contacts the sealing plate 6. Due to the pressure, the sealing ball 12 is squeezed to move upward and enter the flow chamber 11. The size of the flow chamber 11 is larger than that of the sealing ball 12. At this time, the steam continues to flow upward from the gap between the sealing ball 12 and the flow chamber 11 to the upper area, and performs secondary heat exchange on the upper area, thereby achieving graded and sequential heat exchange, which can effectively and quickly heat up and avoid large temperature differences in the inner cavity 2, further improving resource utilization. The steam after the secondary heat exchange flows from the top of one side of the air outlet 5 to the guide layer 31, and flows out from the air outlet 5.

[0062] The enzymolysis tank also includes a stirrer, which is used to perform stirring action in the inner cavity 2, wherein the reference Figure 7-Figure 8 As shown, the stirrer includes a stirring shaft 14, a plurality of stirring blades 15, and an electric telescopic rod 16. The stirring shaft 14 is arranged in the inner cavity 2, and the top end extends to the top end of the tank body 1 and is connected to the stirring motor 19; each stirring blade 15 is arranged at intervals along the axis direction of the stirring shaft 14, and adjacent stirring blades 15 are connected by a foldable connecting rod, refer to Figure 7 A foldable connecting rod is provided, including a first connecting rod 17 and a second connecting rod 18, the first connecting rod 17 and the second connecting rod 18 are hinged to each other, the first connecting rod 17 is hinged to the upper stirring blade 15, and the second connecting rod 18 is hinged to the lower stirring blade 15; wherein the bottom stirring blade 15 is fixedly connected to the stirring shaft 14, and the remaining stirring blades 15 are movably connected along the axial direction of the stirring shaft 14; an annular frame 20 is arranged on the outer side of the top stirring blade 15; the telescopic end of the electric telescopic rod 16 is in sliding contact with the annular frame 20, and the electric telescopic rod 16 is used to drive the annular frame 20 to rise or fall, and by driving the top stirring blade 15 to rise or fall, the spacing between each stirring blade 15 is adjusted.

[0063] Among them, an annular groove 21 is arranged at the top of the annular frame 20 , and the cross section of the annular groove 21 is a T-shaped structure. The telescopic end of the electric telescopic device is equipped with a T-shaped connecting block 22 , and the T-shaped connecting block 22 is inserted into the annular groove 21 .

[0064] During operation, the electric telescopic rod 16 is started according to needs. For example, the electric telescopic rod 16 is extended, pushing the annular frame 20 downward, and simultaneously pushing the topmost stirring blade 15 downward, and driving the foldable connecting rod to fold to a certain angle. The angle can be pre-set by setting the maximum blocking angle of the foldable connecting rod; at this time, the second stirring blades 15 will be driven to move downward, and the above will be repeated until all the stirring blades 15 move downward to a suitable position, driving the stirring motor 19, and driving the stirring shaft 14 to rotate. Since the stirring blade 15 at the lowest end is fixedly connected to the stirring shaft 14, all the stirring blades 15 will be driven to rotate. Through the setting of the above-mentioned annular groove 21, the annular frame 20 will rotate independently of the telescopic end of the electric telescopic drive, and the two will not affect each other, and vice versa.

[0065] Among them, reference Figure 1 As shown, the enzymolysis tank also includes a controller 23 and a liquid level meter 24. The liquid level meter 24 is used to monitor the liquid level data in the inner cavity 2 and feed it back to the controller 23. The regulating mechanism and the electric telescopic rod 16 are both connected to the controller 23. Based on the liquid level data, the controller 23 controls the regulating mechanism and the electric telescopic rod 16 to execute corresponding instructions; the liquid level in the inner cavity 2 can be automatically monitored by the liquid level meter 24, and the above operation is automatically controlled by the control box to circulate steam in the designated area of ​​the interlayer 3 of the enzymolysis tank, and the liquid area is quickly and effectively heated up in a targeted manner, and the movement of each stirring blade 15 is controlled so that it can perform effective stirring work, avoid idling of some stirring blades 15, improve the stirring effect, and thus improve the enzymolysis efficiency.

[0066] Based on the above, the present invention also provides a high-temperature enzymatic hydrolysis harmless treatment process for dead animals, comprising the following steps:

[0067] S1. Add the material (the material after the high-temperature crushing of the dead animal carcasses) into the processing tank, start the heating device, and after the temperature and pressure in the tank reach the preset value, enter the heating and processing stage. The processing time for each batch is 5 hours (European and American sterilization standards, and the pressure and temperature can also be adjusted according to different materials). After that, a material containing about 30% of waste oil is obtained; the specific processing control parameters are as follows: the center temperature of the processed material is ≥160℃, the pressure is ≥0.5MPa, the insulation time is ≥0.5h, the processing time is 4h, the heating is stopped after 0.5h and the pressure relief valve 8 is opened. The single complete processing time is 5h.

[0068] Heating: Steam is provided by a 6t / h biomass boiler. Viruses from dead livestock and poultry are generally difficult to survive at 70°C. High-temperature treatment at 160°C for 30 minutes can kill most viruses, which meets the control parameter requirements of the "Technical Specifications for the Harmless Treatment of Dead and Diseased Animals" (Nongyifa

[2017] No. 25).

[0069] After the chemical reaction is completed, the upper layer of oil and water directly enters the oil-water tank, and the lower layer of slag enters the separator, where bones larger than 10 mm are initially screened out through the separation process and returned to the chemical reaction tank as the raw material for the next batch of chemical reaction;

[0070] S2. The materials in the oil-water tank enter the horizontal screw centrifuge to separate the oil, water and residue. The oil is directly pumped into the oil storage tank for sale. The filtrate enters the enzymatic hydrolysis tank. By setting the centrifuge parameters, the centrifuge only removes the broken bones and shredded meat to form residues. The residues are returned to the chemical tank as the raw materials for the next batch of chemical reactions.

[0071] The filtrate enters the enzymolysis tank, and the condensed water from the chemical tank is passed into the enzymolysis tank to adjust the solid content to ≤35%;

[0072] S3, preparing a reaction catalyst by mixing a biological enzyme preparation (which catalyzes large molecular proteins into small molecular proteins) and sodium hydroxide, and passing the mixture into an enzymatic hydrolysis tank;

[0073] S4, monitoring the liquid level in the enzymatic hydrolysis tank through the liquid level meter 24, and feeding back the liquid level data to the controller 23;

[0074] S5. Based on the liquid level data, the controller 23 issues an instruction:

[0075] The control regulating mechanism operates to regulate the steam to circulate in the designated area of ​​the interlayer 3 of the enzymatic hydrolysis tank;

[0076] Control the operation of the electric telescopic rod 16 to adjust the spacing between the stirring blades 15;

[0077] S6. Steam is introduced into the interlayer 3 to adjust the temperature in the inner cavity 2, and enzymatic hydrolysis is performed under a moderate temperature and pH environment to promote the formation of fibrin clots; finally, the temperature is controlled to 85° C. to perform enzyme inactivation reaction.

[0078] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. For ordinary technicians in this technical field, after knowing the contents recorded in the present invention, they can make several equivalent changes and substitutions without departing from the principle of the present invention. These equivalent changes and substitutions should also be regarded as belonging to the protection scope of the present invention.

Claims

1. A device for high temperature enzymatic hydrolysis and harmless treatment of dead animals, comprising an enzymatic hydrolysis tank for performing enzymatic hydrolysis and enzyme inactivation reactions on materials after high temperature treatment and centrifugation, characterized in that: The enzymolysis tank comprises: A tank body, comprising an inner cavity and an interlayer outside the inner cavity, wherein the interlayer is used for circulating steam and performing heat exchange with the inner cavity; and A regulating mechanism is provided in the interlayer, and the regulating mechanism is configured to control the steam to circulate in a designated area of ​​the interlayer; The interlayer includes a guide layer and a heat exchange layer, the heat exchange layer is in contact with the inner cavity, the guide layer is arranged outside the heat exchange layer, and the guide layer is in communication with the heat exchange layer; and An air inlet and an air outlet are provided near the top of the tank body, and both the air inlet and the air outlet are connected to the guide layer; The regulating mechanism comprises: A plurality of sealing plates, each of which is arranged in the heat exchange layer along the vertical direction and divides the heat exchange layer into a plurality of spaces along the vertical direction; A channel is provided between the guide layer and each space and connects the guide layer and each space. A valve is installed in the channel and the valve is used to close or open the channel. an agitator for performing a stirring action in the inner cavity; The bottom end of the guide layer is connected to the heat exchange layer; the regulating mechanism comprises: A sealing plate, which is an annular structure and is disposed in the heat exchange layer to divide the heat exchange layer into two layers, an upper layer and a lower layer; A power part is connected to the sealing plate and is used to drive the sealing plate to move in the vertical direction to adjust the ratio of the upper and lower layers of the heat exchange layer; The bottom end of the guide layer located on the air inlet side is connected to the heat exchange layer, and the top end of the guide layer located on the air outlet side is connected to the heat exchange layer; The sealing plate is provided with a plurality of through holes, each of which is provided with a flow cavity, and a sealing ball is provided in the flow cavity, the diameter of the sealing ball is larger than the inner diameter of the through hole, and the sealing ball is configured to: block the bottom opening of the through hole in a natural state or when the gas flows downward from the top; retreat into the flow cavity when the gas flows upward from the bottom, and form a gap between the sealing ball and the flow cavity for gas to flow; The agitator comprises: A stirring shaft is arranged in the inner cavity, and its top end extends to the top end of the tank body and is connected to the stirring motor; A plurality of stirring blades, each of which is arranged at intervals along the axis direction of the stirring shaft, and adjacent stirring blades are connected by a foldable connecting rod, wherein the stirring blade at the bottom is fixedly connected to the stirring shaft, and the remaining stirring blades are movably connected along the axis direction of the stirring shaft; an annular frame is arranged outside the stirring blade at the top; The electric telescopic rod has a telescopic end in sliding contact with the annular frame. The electric telescopic rod is used to drive the annular frame to rise or fall, and to adjust the spacing between the stirring blades by driving the stirring blades at the top to rise or fall.

2. The high temperature enzymatic hydrolysis harmless treatment device for dead animals according to claim 1, characterized in that: The inner cavity is used for storing meat sludge and filtrate, and the solid content in the inner cavity is ≤35%.

3. The high temperature enzymatic hydrolysis harmless treatment device for dead animals according to claim 1, characterized in that: The top of the annular frame is provided with an annular groove, and the cross section of the annular groove is a T-shaped structure. The telescopic end of the electric telescopic device is equipped with a T-shaped connecting block, and the T-shaped connecting block is inserted into the annular groove.

4. The high temperature enzymatic hydrolysis harmless treatment device for dead animals according to claim 3, characterized in that: The enzymatic hydrolysis tank also includes a controller and a liquid level meter. The liquid level meter is used to monitor the liquid level data in the inner cavity and feed it back to the controller. The regulating mechanism and the electric telescopic rod are both connected to the controller. Based on the liquid level data, the controller controls the regulating mechanism and the electric telescopic rod to execute corresponding instructions.

5. A high temperature enzymatic hydrolysis and harmless treatment process for dead animals, using the high temperature enzymatic hydrolysis and harmless treatment device for dead animals according to claim 4, characterized in that: The steps include: S1. After the material is processed in the chemical tank, the upper layer of oil and water enters the oil-water tank, and the lower layer of slag enters the separator. The bones larger than 10mm are initially screened out through the separation process and returned to the chemical tank as the raw material for the next batch of chemical reaction; S2. The material in the oil-water tank enters the horizontal screw centrifuge to separate the oil, water and slag. The filtrate enters the enzymolysis tank, and the condensed water from the chemical tank is passed into the enzymolysis tank to adjust the solid content to ≤35%; S3, preparing a reaction catalyst by mixing a biological enzyme preparation and sodium hydroxide, and introducing the catalyst into an enzymatic hydrolysis tank; S4, monitoring the liquid level in the enzymatic hydrolysis tank through a liquid level meter, and feeding back the liquid level data to the controller; S5. Based on the liquid level data, the controller issues an instruction: Control the regulating mechanism to work and regulate the steam to circulate in the designated area of ​​the interlayer of the enzymatic hydrolysis tank; Control the operation of the electric telescopic rod and adjust the spacing between each mixing blade; S6. Steam is introduced into the interlayer to adjust the temperature in the inner cavity to carry out enzymatic hydrolysis and enzyme inactivation reactions.

Images