A system for producing multiple by-products from livestock manure

Abstract

The utility model discloses a kind of livestock manure production multiple by-products systems, including receiving pool;Anaerobic reaction tank, with receiving pool connection, for manure carries out mesophilic concentration anaerobic fermentation;The top is provided with exhaust pipe, for discharging methane;Screw extruder, the import of screw extruder is connected with anaerobic reaction tank, for separating manure solid-liquid, form biogas slurry and solid manure;Biogas slurry temporary storage pool, with the outlet of screw extruder connection;CO2 storage tank, for storing CO2, reaction kettle, with biogas slurry temporary storage pool and CO2 storage tank connection, the upper portion of the reaction kettle is connected with external water pipe;Compared with prior art, the system of the utility model is collected and reused to all by-products of manure, improve the utilization efficiency of manure, while effectively protecting the environment;By setting screw extruder, manure is separated solid-liquid, and after other processes, more by-products can be produced after solid manure and biogas slurry of separation.

Description

Technical Field

[0001] This utility model relates to the field of livestock and poultry manure recycling technology, specifically to a system for producing various by-products from livestock and poultry manure. Background Technology

[0002] Currently, large-scale livestock manure treatment in China primarily focuses on storage for agricultural use and organic fertilizer production, with biogas production being relatively rare, accounting for only about 1% nationwide. This lack of utilization not only results in poor economic efficiency but also causes serious environmental pollution, particularly from livestock farming. The environmental pollution caused by livestock and poultry farming in my country is becoming increasingly severe, with large quantities of manure and wastewater generated. Currently, most domestic methods employ simple open-air composting or static ventilated fermentation, which are outdated, have long fermentation cycles, high energy consumption, and significant environmental impact from compost odors and wastewater. Furthermore, the use of manure solely as raw material for organic fertilizer production suffers from low utilization rates and other shortcomings. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing methods for producing various byproducts from livestock and poultry manure, which often involve simple open-air stacking or static ventilation fermentation, resulting in long fermentation cycles, high energy consumption, significant environmental impact from compost odors and wastewater, and low utilization rates.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A system for producing multiple byproducts from livestock and poultry manure includes: A receiving pool is used to receive sewage; The anaerobic reactor, connected to the receiving tank, is used for mesophilic high-concentration anaerobic fermentation of manure; an exhaust pipe is installed at the top to discharge methane. The screw extruder is connected to the anaerobic reactor at its inlet and is used to separate the solid and liquid components of manure to form biogas slurry and solid manure. The biogas slurry temporary storage tank is connected to the outlet of the screw extruder and is used to store biogas slurry; CO2 storage tank, used to store CO2. The reactor is connected to the biogas slurry storage tank and the CO2 storage tank. The upper part of the reactor is connected to an external water pipe for the reaction of ammonia, CO2 and water.

[0005] As a further preferred embodiment of this utility model, it also includes a submersible sewage pump and a transfer pump. The submersible sewage pump is located between the receiving tank and the anaerobic reactor for pumping and transferring manure. The transfer pump is located between the top of the biogas slurry storage tank and the top of the reactor for pumping and transferring ammonia.

[0006] As a further preferred embodiment of this utility model, a hot water tank is also provided. The hot water tank is equipped with an electric heating device and a water pump. A hot water pipe is connected to the outside of the hot water tank. One end of the hot water pipe is located at the bottom of the hot water tank, and the other end is located at the top of the hot water tank and connected to the inlet of the water pump. The hot water pipe is placed in the biogas temporary storage tank. In low temperature or cold weather, hot water is supplied through the hot water tank to heat the biogas slurry and allow ammonia gas to escape.

[0007] As a further preferred embodiment of this invention, the electric heating device is connected to a temperature control module.

[0008] As a further preferred embodiment of this invention, a spray device is installed in the upper part of the reactor and connected to an external water pipe for water replenishment.

[0009] The system for producing multiple by-products from livestock and poultry manure proposed in this utility model has the following advantages compared with the prior art: 1. This utility model separates manure into solid and liquid by setting up a screw extruder. The separated solid manure and biogas slurry can produce more by-products after being processed by other processes. 2. This utility model solves the problem of ammonia gas not being able to escape under low temperature or cold conditions by setting up a hot water tank and using electric heating to heat water to 75°C to form a closed loop. 3. The system involved in this utility model collects and reuses all by-products of fecal waste, which improves the utilization efficiency of fecal waste and effectively protects the environment. 4. The system structure involved in this utility model is simple to connect, stable and reliable in operation, and has a fast investment recovery. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of a hot water tank.

[0011] The meanings of the labels in the attached diagram are as follows: 1. Receiving tank, 2. Submersible pump, 3. Anaerobic reactor, 4. Exhaust pipe, 5. Screw extruder, 6. Biogas slurry storage tank, 7. Hot water tank, 71. Electric heating device, 72. Water pump, 73. Hot water pipe, 8. Transfer pump, 9. Reactor, 10. CO2 storage tank, 11. Spraying device. Detailed Implementation

[0012] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0013] Example 1: Combining Figure 1-2A system for producing multiple by-products from livestock and poultry manure includes: a receiving tank 1 for receiving manure; an anaerobic reactor 3 connected to the receiving tank 1 for mesophilic high-concentration anaerobic fermentation of the manure; an exhaust pipe 4 at the top for discharging methane; a submersible pump 2 located between the receiving tank 1 and the anaerobic reactor 3 for pumping and transporting manure; a screw press 5, the inlet of which is connected to the anaerobic reactor 3 for separating the manure into solid and liquid components, forming biogas slurry and solid manure fertilizer; and a biogas slurry storage tank 6 connected to the screw press. The outlet connection of component 5 is used for storing biogas slurry. A hot water tank 7 is provided, containing an electric heating device 71 and a water pump 72. The electric heating device 71 is connected to a temperature control module. A hot water pipe 73 is connected to the outside of the hot water tank 7, with one end at the bottom and the other end at the top, connected to the inlet of the water pump 72. The hot water pipe 73 is placed inside the biogas temporary storage tank. In low temperatures or cold weather, hot water is supplied through the hot water tank 7 to heat the biogas slurry, allowing ammonia gas to escape. The electric heating device 71 and the temperature control module are existing technologies; therefore, their specific components and connection structures will not be described in detail in this application.

[0014] The reactor 9 is connected to the biogas slurry storage tank 6 and the CO2 storage tank 10. The delivery pump 8 is located between the top of the biogas slurry storage tank 6 and the top of the reactor 9. The CO2 storage tank 10 is used to store CO2. A spray device 11 is installed in the upper part of the reactor 9 and is connected to an external water pipe. The spray device 11 is a conventional water spray device, including a water supply pipe and several spray heads. This device is a commonly used spray device 11 by those skilled in the art, so its specific structure and connection relationship will not be described in detail in this technical solution. The reactor 9 is used for the reaction of ammonia, CO2 and water.

[0015] Working principle: Submersible pump 2 draws manure from receiving tank 1 and transports it to anaerobic reactor 3. The manure undergoes a medium-temperature, high-concentration anaerobic reaction in anaerobic reactor 3, producing ammonia gas, which is discharged through exhaust pipe 4. Screw extruder 5 extracts manure for solid-liquid separation, discharging solid manure which can be directly used as fertilizer for loading onto trucks and transported to farmland, or further processed into fertilizer. Biogas slurry enters biogas slurry storage tank 6. Depending on different climatic conditions, the temperature control module adjusts the temperature of the hot water in hot water tank 7 to heat the biogas slurry, allowing ammonia gas to be quickly released. Transfer pump 8 draws ammonia gas from the top of biogas slurry storage tank 6 and transports it to reactor 9. CO2 storage tank 10 transports CO2 to reactor 9. A spraying device 11 sprays water into reactor 9, causing ammonia gas, CO2, and water to react and generate NH4HCO3. The remaining biogas slurry is transported to various farmlands as fertilizer.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A system for producing multiple by-products from livestock and poultry manure, characterized in that, include: A receiving pool is used to receive sewage; An anaerobic reactor is connected to a receiving tank; the top of the anaerobic reactor is equipped with an exhaust pipe for discharging methane. The screw extruder is connected to the anaerobic reactor at its inlet and is used to separate the solid and liquid components of manure to form biogas slurry and solid manure. The biogas slurry temporary storage tank is connected to the outlet of the screw extruder and is used to store biogas slurry; CO2 storage tank, used to store CO2. The reactor is connected to the biogas slurry storage tank and the CO2 storage tank. The upper part of the reactor is connected to an external water pipe for the reaction of ammonia, CO2 and water.

2. The system for producing multiple by-products from livestock and poultry manure according to claim 1, characterized in that, It also includes a submersible sewage pump and a transfer pump. The submersible sewage pump is located between the receiving tank and the anaerobic reactor for pumping and transferring manure. The transfer pump is located between the top of the biogas slurry storage tank and the top of the reactor for pumping and transferring ammonia.

3. The system for producing multiple by-products from livestock and poultry manure according to claim 1, characterized in that, It is also equipped with a hot water tank, which contains an electric heating device and a water pump. A hot water pipe is connected to the outside of the hot water tank. One end of the hot water pipe is located at the bottom of the hot water tank, and the other end is located at the top of the hot water tank and connected to the water pump inlet. The hot water pipe is placed inside the biogas temporary storage tank.

4. A system for producing multiple by-products from livestock and poultry manure according to claim 3, characterized in that, The electric heating device is connected to the temperature control module.

5. A system for producing multiple by-products from livestock and poultry manure according to claim 1, characterized in that, The upper part of the reactor is equipped with a spray device, which is connected to an external water pipe for water replenishment.

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