Pig manure recycling method based on same-frequency resonance technology

Abstract

The invention discloses a pig manure recycling method based on a same-frequency resonance technology, and relates to the technical field of pig manure recycling. The pig manure recycling method comprises the following steps: step 1, carrying out solid-liquid separation on raw pig manure; 2, pushing the solid excrement into a same-frequency resonance reactor for cracking; step 3, performing multi-stage condensation separation on the organic steam to obtain a liquid-phase mixture and non-condensable combustible gas; step 4, extracting the liquid phase mixture; step 5, purifying and refining the non-condensable combustible gas; step 6, mixing solid activated carbon residues with the liquid manure obtained in the step 1 to prepare a carbon-based organic fertilizer; through the same-frequency resonance cracking technology, high-efficiency and harmless treatment of the pig manure is achieved, and the whole amount of the manure is converted into pipeline-grade natural gas, chemical raw materials rich in phenol / acetophenone and high-added-value products of functional carbon-based organic fertilizer.

Description

Technical Field

[0001] This application relates to the field of pig manure recycling technology, specifically a method for recycling and utilizing pig manure based on synchronous resonance technology. Background Technology

[0002] Pig farming has always dominated my country's animal husbandry. According to data released by the China Agricultural Information Network, my country has 519 million head of livestock, of which 330 million are pigs, and 189 million are cattle, sheep, horses, donkeys, and mules. Statistics show that each pig produces 1.1 tons of manure and 1.1 tons of urine per year. Therefore, it can be estimated that my country produces 730 million tons of pig manure annually. With the increasing environmental protection requirements, the technology for the resource utilization of pig manure has also made continuous progress.

[0003] Currently, reported technologies for the resource utilization of pig manure include: high-efficiency anaerobic fermentation beds, bio-enzyme treatment technology, microbial fermentation technology, aerobic fermentation, and composting. However, these technologies for the resource utilization of pig manure have the following significant limitations:

[0004] 1. The processing cycle is long. Anaerobic fermentation or composting usually takes dozens of days or even months, which is inefficient and cannot cope with the large amount of manure produced continuously.

[0005] 2. Incomplete treatment makes it difficult for biological processes to completely degrade antibiotic residues and kill all pathogens and insect eggs, resulting in biosafety risks in fertilizer products. Direct application to the field can easily lead to soil degradation and crop diseases.

[0006] 3. The added value of the products is low, the biogas produced by anaerobic fermentation is not pure and the purification cost is high; the fertilizer effect of compost products is unstable and the economic benefits are limited.

[0007] 4. There is a risk of secondary pollution. The treatment process may generate a large amount of biogas slurry or leachate, which requires further treatment; otherwise, it will cause secondary pollution.

[0008] Therefore, the industry urgently needs a disruptive technology that can quickly, thoroughly, and harmlessly treat pig manure and efficiently transform it into high-value-added products. Summary of the Invention

[0009] To overcome the shortcomings of the prior art, this invention discloses a method for recycling pig manure based on co-frequency resonance technology. Through co-frequency resonance pyrolysis technology, this invention not only achieves high-efficiency and harmless treatment of pig manure, but also converts the manure into high-value-added products such as pipeline-grade natural gas, chemical raw materials rich in phenol / acetophenone, and functional carbon-based organic fertilizer. This fundamentally solves the problem of pollution from livestock farming and creates significant economic and environmental benefits.

[0010] To achieve the above objectives, this application provides the following technical solution:

[0011] A method for recycling pig manure based on resonance technology includes the following steps:

[0012] Step 1: Raw material processing: Solid-liquid separation of pig manure is carried out to obtain non-flowing solid feces and flowable liquid urine or sewage.

[0013] Step 2, Resonant Decomposition: Non-flowing solid feces are pushed into a resonant reactor using a screw propeller. A specific frequency electromagnetic wave matching the vibration frequency of the C-C bond is applied to cause the organic macromolecules in the solid feces to resonate and break, resulting in organic vapor and solid activated carbon residue.

[0014] Step 3, Multi-stage condensation: The organic vapor is extracted and separated by multi-stage condensation to obtain a liquid mixture and a non-condensable combustible gas;

[0015] Step 4, Extraction: The liquid mixture is extracted using an ester solvent to separate the organic phase containing phenol and acetophenone, yielding a crude aqueous wood vinegar solution.

[0016] Step 5, Purification and Refining: The non-condensable combustible gas is purified and refined to obtain pipeline-grade natural gas;

[0017] Step 6: Preparation of carbon-based organic fertilizer: Mix the solid activated carbon residue with the liquid manure obtained in Step 1 to prepare carbon-based organic fertilizer.

[0018] Furthermore, the electromagnetic wave emission frequency during the co-frequency resonance decomposition process is between 24 THz and 36 THz, and the energy density is greater than 350 kWh / L;

[0019] The reaction temperature inside the resonant reactor is 320℃ to 380℃, and the reaction pressure is 5,000 Pa to 10,000 Pa.

[0020] Furthermore, the multi-stage condensation in step three includes the following steps:

[0021] a. Primary air cooling: Organic vapor is introduced into the primary air cooler to cool the temperature of the organic vapor to the range of 180°C - 220°C, and the high-temperature heavy components in the organic vapor are separated to obtain gas phase I;

[0022] b. Secondary air cooling: Gas phase I is introduced into the secondary air cooler to cool the temperature of gas phase I to 80°C - 100°C, and the medium oil phase in gas phase I is separated to obtain gas phase II;

[0023] c. Primary water cooling: Introduce gas phase II into the primary water cooler to cool the temperature of gas phase II to 20°C - 40°C, resulting in a mixture of gas phase III and liquid phase;

[0024] d. Secondary water cooling: The gas phase III is introduced into the secondary water cooler to cool the temperature of the gas phase III to 0°C - 5°C, capturing the very light components in the gas phase III to obtain non-condensable combustible gas.

[0025] Furthermore, the extraction in step four includes the following steps:

[0026] a. Oil-water separation: The liquid mixture is introduced into an oil-water separator and allowed to separate into layers by standing due to density difference, resulting in an upper layer of light oil or a lower layer of crude wood vinegar.

[0027] b. Solution extraction: The crude wood vinegar solution is introduced into the extraction vessel, an ester solvent is added, and the mixture is stirred and allowed to stand for separation to obtain an upper organic phase and a lower aqueous phase.

[0028] c. Distillation: The upper organic phase is introduced into a distillation column for fractionation to obtain organic chemical products such as phenol and acetophenone with high purity;

[0029] d. Aqueous phase treatment: The pH value of the lower aqueous phase was measured, and glacial acetic acid was added and stirred to adjust the pH value to 3.0, thus obtaining the wood crude liquor.

[0030] Furthermore, the ester solvent is ethyl acetate or butyl acetate.

[0031] Furthermore, the purification and refining in step five includes the following steps;

[0032] a. Acid removal: Non-condensable combustible gas is introduced into a packed tower filled with alkaline substances to obtain acid-removed gas and waste liquid rich in acidic salts.

[0033] b. Purification: The acid-removed gas is introduced into the purification tower to obtain purified gas;

[0034] c. Refining: The purified gas is refined using membrane separation or pressure swing adsorption to remove impurities and obtain pipeline-grade natural gas.

[0035] Furthermore, the temperature of the solid activated carbon residue is 320°C to 350°C.

[0036] Furthermore, when solid activated carbon residue is mixed with liquid fecal waste, one or more additives from humus, kaolin, amino acids, protein, pepper cake, soybean meal, and sawdust are added.

[0037] Compared with the prior art, the beneficial effects of this application are:

[0038] This invention utilizes electromagnetic waves of a specific frequency to directly break the chemical bonds of organic macromolecules in pig manure through synchronous resonance treatment, achieving a rapid pyrolysis reaction triggered in seconds and completed in minutes. This contrasts sharply with the traditional biological treatment technology, which has a cycle of tens of days. The treatment efficiency is improved by several orders of magnitude, making large-scale, continuous, and workshop-style treatment possible, and completely eliminating the dependence on large-scale composting sites and long fermentation cycles.

[0039] This invention utilizes resonance pyrolysis at a medium-high temperature of 320℃-380℃ in a closed environment to completely decompose residual antibiotics, hormones, and other organic pollutants in pig manure, and to completely inactivate all pathogenic microorganisms, bacteria, and insect eggs. The carbon-based organic fertilizer produced thereby fundamentally eliminates biosafety risks.

[0040] This invention achieves a revolutionary leap in pig manure treatment from "inefficient, low-value, and polluting" to "efficient, high-value, and zero-emission" through co-frequency resonance pyrolysis technology. This method has extremely high treatment efficiency and can completely eliminate harm, ultimately converting all manure into high-value-added products such as pipeline-grade natural gas, chemical raw materials rich in phenol / acetophenone, and functional carbon-based organic fertilizer. It fundamentally solves the problem of livestock pollution and creates significant economic and environmental benefits. Detailed Implementation

[0042] This invention provides a technical solution:

[0043] Pig manure is a complex organic mixture, and its main degradable organic components include:

[0044] Carbohydrates include cellulose, hemicellulose, and starch, whose basic structural unit is the sugar ring, which is rich in COC bonds and C-OH bonds.

[0045] Proteins are composed of amino acids linked by peptide bonds (CN bonds and amide bonds with some double bond characteristics), and also contain various side chain groups;

[0046] Fats / Lipids: Composed of glycerol and long-chain fatty acids linked by ester bonds (C(=O)-OC), with fatty acid chains rich in C-C bonds and CH bonds;

[0047] Lignin: a complex aromatic polymer containing abundant benzene rings, C-C bonds, and CO-C bonds;

[0048] Since each of the above chemical bonds (such as CC, CH, CO, C=O, NH) is like a "spring" of different weights and stiffness, it has its own inherent vibration frequency. This frequency depends on the mass of the constituent atoms and the strength of the bond. When the frequency of the electromagnetic wave applied from the outside is consistent with the inherent vibration frequency of a certain chemical bond, a resonance phenomenon will occur. At this time, the energy of the electromagnetic wave will be efficiently and selectively absorbed by the chemical bond, rather than being absorbed evenly by the entire molecule. The absorbed energy is converted into the violent vibrational kinetic energy of the chemical bond. When the vibration amplitude exceeds its bond energy limit, the chemical bond will break, thereby achieving the same-frequency resonance cleavage of solid feces and realizing the recycling and treatment of pig manure.

[0049] A method for recycling pig manure based on resonance technology includes the following steps:

[0050] Step 1, Raw material processing: Solid-liquid separation of pig manure is performed to obtain non-flowing solid feces and flowable liquid urine or sewage;

[0051] Step 2, Resonant Decomposition: Non-flowing solid feces are pushed into a resonant reactor using a screw propeller. A specific frequency electromagnetic wave matching the vibration frequency of the C-C bond is applied to cause the organic macromolecules in the solid feces to resonate and break, resulting in organic vapor and solid activated carbon residue.

[0052] The electromagnetic wave emission frequency during the resonance cleavage process is between 24 THz and 36 THz, with an energy density greater than 350 kWh / L. This band perfectly covers the intrinsic vibrational frequencies of C-C and CO-C bonds, which are the core of the molecular skeleton and connecting bonds of the three major organic compounds (carbohydrates, proteins, and lignin) in pig manure. Breaking these bonds can most effectively achieve the depolymerization and cleavage of macromolecules. If too high a frequency is used (such as 84-93 THz for CH bonds), energy may be absorbed by a large number of non-core CH bonds, leading to a decrease in efficiency. The high energy density is due to the high water content of pig manure (usually >70%) and the large latent heat of phase transition. The high energy density ensures that the system can quickly reach and maintain the reaction temperature, allowing water to vaporize rapidly and participate in the reaction, while providing sufficient energy for the resonance cleavage of organic matter.

[0053] The reaction temperature in the resonant reactor is 320°C to 380°C, and the reaction pressure is 5,000 Pa to 10,000 Pa. The lower limit of 320°C ensures that the pyrolysis reaction can proceed at a considerable rate and that the product vapor can escape effectively. The upper limit of 380°C prevents excessive pyrolysis from producing too much non-condensable small molecule gas, which would reduce the yield of liquid product (wood vinegar) and at the same time avoid damage to the structure of solid carbon product, ensuring its porosity and adsorption activity. The reaction pressure of 5,000 Pa to 10,000 Pa helps to quickly remove the organic vapor generated by pyrolysis from the top of the reaction chamber and into the condensation system, reducing the residence time of the vapor in the high-temperature zone and preventing secondary pyrolysis or coking.

[0054] Step 3, Multi-stage condensation: The organic vapor is extracted and subjected to multi-stage condensation separation to obtain a liquid mixture and a non-condensable combustible gas. This specifically includes the following steps:

[0055] a. Primary air cooling: Organic vapor is introduced into the primary air cooler and cooled to the range of 180°C - 220°C. At this temperature, the components with the highest boiling point, such as heavy tar, macromolecular phenols, and long-chain fatty acids, condense into liquid first due to the decrease in saturated vapor pressure, thus obtaining gas phase I.

[0056] b. Secondary air cooling: Gas phase I is introduced into the secondary air cooler and its temperature is cooled to 80°C - 100°C. In this intermediate temperature range, fuel oil components with higher boiling points, some neutral oils (such as some long-chain alkanes and olefins), and some wood tar will condense down to obtain gas phase II.

[0057] c. Primary water cooling: Gas phase II is introduced into the primary water cooler and its temperature is cooled to 20°C - 40°C. Hundreds of water-soluble or partially water-soluble organic compounds, such as acetic acid, propionic acid, methanol, acetone, low-molecular-weight phenols, aldehydes, and ketones, with low boiling points, form a liquid mixture together with the simultaneously condensed water vapor. At the same time, some light oils (immiscible with water) will also condense at this temperature, resulting in a mixture of gas phase III and liquid phase.

[0058] d. Secondary water cooling: The gas phase III is introduced into the secondary water cooler and cooled to 0°C - 5°C. Under this deep cooling, naphtha components with extremely low boiling points (C5-C8), some chlorinated alkanes, and highly volatile organic compounds (VOCs) such as benzene series compounds are liquefied and recovered to obtain non-condensable combustible gas.

[0059] Step 4: Extraction: The liquid mixture is extracted using an ester solvent to separate the organic phase containing phenol and acetophenone, yielding a crude aqueous wood vinegar solution. This process includes the following steps:

[0060] a. Oil-water separation: The liquid mixture is introduced into an oil-water separator and allowed to separate into layers by standing due to density difference, resulting in an upper layer of light oil or a lower layer of crude wood vinegar.

[0061] b. Solution extraction: The crude wood vinegar is introduced into the extraction vessel, and an ester solvent such as ethyl acetate or butyl acetate is added. After stirring, the mixture is allowed to stand and separate into layers. The solubility of substances such as phenol and acetophenone in organic ester solvents is much higher than their solubility in water. Through liquid-liquid extraction, these high-value chemicals are selectively "transferred" from the aqueous phase to the organic phase, achieving preliminary separation and enrichment, resulting in an upper organic phase and a lower aqueous phase.

[0062] c. Distillation: The upper organic phase is introduced into a distillation column for fractionation. First, the solvent is recovered by distillation at a lower temperature (e.g., the boiling point of ethyl acetate is about 77°C). The recovered solvent can be recycled for the next extraction. Then, according to the different boiling points of the target products, such as acetophenone fraction (boiling point about 202°C) and phenol fraction (boiling point about 182°C), different fractions are collected to obtain organic chemical products such as phenol and acetophenone with higher purity.

[0063] d. Aqueous phase treatment: Detect the pH value of the lower aqueous phase and add glacial acetic acid and stir to adjust the pH value to 3.0. Since organic acids such as acetic acid will be lost in small amounts during the extraction process, the pH value at this time may be higher than the target value. By adding pure glacial acetic acid, the total acid content of the wood vinegar is compensated and unified to ensure the stability between product batches and obtain the crude wood liquor.

[0064] Step 5, Purification and Refining: The non-condensable combustible gas is purified and refined to obtain pipeline-grade natural gas. This includes the following steps:

[0065] a. Acid removal: Non-condensable combustible gas is introduced into a packed tower filled with alkaline substances. The non-condensable combustible gas comes into countercurrent contact with dilute alkaline solution or special amine solution sprayed from top to bottom. The purified gas is discharged from the top of the tower, and the waste liquid rich in acidic salts is discharged from the bottom of the tower and collected for treatment, so as to obtain acid-removed gas and waste liquid rich in acidic salts.

[0066] b. Purification: The acid-removed gas is introduced into the purification tower. When the gas passes through the adsorbent bed, trace impurities (such as moisture, trace sulfides, heavy hydrocarbons, benzene, naphthalene, etc.) are selectively adsorbed and retained to obtain purified gas.

[0067] c. Refining: The purified gas is refined using membrane separation or pressure swing adsorption to remove impurities (such as nitrogen, oxygen, and any residual hydrogen and carbon monoxide) to obtain pipeline-grade natural gas.

[0068] Membrane separation involves passing purified gas through a series of hollow fiber membrane modules under pressure. The gas components are separated by the difference in their dissolution-diffusion rates within the membrane material. Typically, "fast gases" such as CO2, H2S, H2O, and H2 can pass through the membrane wall more quickly, while "slow gases" such as CH4 and N2 are retained on the high-pressure side, thereby achieving the enrichment of methane.

[0069] Pressure swing adsorption (PSA) involves periodically performing pressure adsorption followed by pressure desorption in multiple adsorption towers containing specialized adsorbents (such as carbon molecular sieves). By utilizing the difference in kinetic diameters of nitrogen and methane in carbon molecular sieves, N2 molecules diffuse at a slightly faster rate than CH4. Under high pressure, N2 molecules can enter the pores of the molecular sieve more quickly and be adsorbed, thereby enriching methane in the gas phase.

[0070] Step Six: Preparation of Carbon-Based Organic Fertilizer: Mix the solid activated carbon residue with the liquid manure obtained in Step One. The temperature of the solid activated carbon residue is 320℃ to 350℃. When it is mixed with the liquid manure, it uses its own high temperature to disinfect and sterilize the liquid manure. The mixture is then used to prepare carbon-based organic fertilizer. During the mixing process, one or more additives can be added from humus, kaolin, amino acids, protein, pepper cake, soybean meal, and sawdust to adjust the physical state and nutrient composition so that the final product meets the product standards for carbon-based organic fertilizer.

[0071] Example 1: 1 kg of pig manure was collected and processed. The specific steps are as follows:

[0072] Step 1, Raw material processing: Separate the solid and liquid using a screw extrusion solid-liquid separator to obtain approximately 0.5 kg of solid feces and 0.5 kg of liquid fecal waste.

[0073] Step 2, Resonant Decomposition: Solid feces are continuously fed into the resonant reactor via a screw propeller. The electromagnetic wave generator is turned on, and its emission frequency is controlled at 28 THz with an energy density of 360 kWh / L. The internal temperature of the reactor is maintained at 350℃ and the pressure at 6000 Pa through the temperature and pressure control system. The residence time of solid feces in the reactor is 4 minutes.

[0074] Step 3, Multi-stage condensation: The organic vapors drawn from the top of the reactor pass sequentially through:

[0075] Primary air cooler: controls the outlet gas phase temperature to 200℃, condenses and separates heavy tar.

[0076] Secondary air cooler: controls the outlet gas phase temperature to 90℃, condenses and separates medium-quality fuel oil.

[0077] Primary water cooler: uses circulating cooling water, controls the outlet gas phase temperature to 30℃, and condenses to obtain a liquid phase mixture.

[0078] Two-stage water cooler (deep cryogenic): uses chilled brine to control the outlet gas phase temperature at 2°C, captures the very light component naphtha, and finally obtains non-condensable combustible gas;

[0079] Step 4: Extraction

[0080] The liquid mixture was allowed to stand for oil-water separation to obtain the lower layer of crude wood vinegar.

[0081] The crude wood vinegar was mixed with ethyl acetate (volume ratio 3:1) in an extraction vessel and stirred for 30 minutes, then allowed to stand for separation.

[0082] The upper organic phase is fed into a distillation column, where ethyl acetate is recovered, and the phenol fraction (boiling range 180-182℃) and the acetophenone fraction (boiling range 200-202℃) are collected.

[0083] Add glacial acetic acid to the lower aqueous phase to adjust the pH to 3.0 to obtain commercial wood vinegar.

[0084] Step 5: Gas purification and refining:

[0085] Non-condensable combustible gas is passed into a packed tower containing 5% NaOH solution for acid removal.

[0086] After acid removal, the gas is passed into a purification tower filled with activated carbon and 4A molecular sieve for deep desulfurization and dehydration.

[0087] Pressure swing adsorption (PSA) is used to refine the purified gas and increase the methane concentration.

[0088] Step Six: Preparation of Carbon-Based Organic Fertilizer: The solid activated carbon residue discharged from the bottom of the reactor at a temperature of approximately 335℃ is directly mixed with 0.5 kg of liquid manure obtained in Step 1, and the mixture is sterilized using residual heat. Subsequently, 50 g of humus and 30 g of soybean meal are added for compounding and granulation to obtain carbon-based organic fertilizer.

[0089] Results and Analysis:

[0090] Processing 1 kg of solid feces yields the following final products:

[0091] Pipeline-grade natural gas: 0.21 kg (approximately 0.294 NL), with a methane volume content of 77.5% as determined by testing.

[0092] Chemical raw materials: 18.2g of phenol and 15.1g of acetophenone were obtained by distillation;

[0093] Commercial wood vinegar: 0.205 kg;

[0094] Carbon-based organic fertilizer: approximately 0.58 kg. According to testing, its carbon content is 62% and its total nutrient (N+P2O5+K2O) content is 7.5%.

[0095] Example 2 illustrates a specific implementation of the present invention in continuous, large-scale production. The process parameters are optimized based on Example 1. The specific steps are as follows:

[0096] Step 1, Raw material processing: A continuous solid-liquid separator is used to process 1 ton of pig manure per hour, and the ratio of solid manure to liquid manure is approximately 1:1.

[0097] Step 2, Resonant Pyrolysis: In a continuously fed resonant reactor, the electromagnetic wave frequency is controlled at 25 THz, and the energy density is 380 kWh / L. The internal temperature of the reactor is stabilized at 380℃, and the pressure is maintained at 8000 Pa. The average residence time of the material is 3 minutes.

[0098] Subsequent steps: Multi-stage condensation: The processes of condensation, extraction, gas purification and refining, and fertilizer mixing are basically the same as in Example 1, and all are operated using continuous equipment. Among them, the gas refining unit adopts membrane separation.

[0099] Results and Analysis:

[0100] After 8 hours of continuous and stable operation, the total output of the products was calculated, and the output ratio remained stable.

[0101] Pipeline-grade natural gas: The yield is approximately 42.5% of the weight of solid feces fed in, and the methane volume content is consistently above 76.8%.

[0102] Chemical raw materials and wood vinegar: The yield of liquid products is about 43%, of which phenol, acetophenone and other products can be stably obtained through continuous extraction and distillation;

[0103] Carbon-based organic fertilizer: The activated carbon residue yield is about 14.5%. After being compounded with liquid manure and additives, the organic matter content and various indicators of the fertilizer meet the relevant national standards.

[0104] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that this invention can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A method for recycling pig manure based on synchronous resonance technology, characterized in that, Includes the following steps: Step 1, Raw material processing: Solid-liquid separation of pig manure is performed to obtain non-flowing solid feces and flowable liquid urine or sewage; Step 2, Resonant Decomposition: Non-flowing solid feces are pushed into a resonant reactor using a screw propeller. A specific frequency electromagnetic wave matching the vibration frequency of the C-C bond is applied to cause the organic macromolecules in the solid feces to resonate and break, resulting in organic vapor and solid activated carbon residue. Step 3, Multi-stage condensation: The organic vapor is extracted and separated by multi-stage condensation to obtain a liquid mixture and a non-condensable combustible gas; Step 4, Extraction: The liquid mixture is extracted using an ester solvent to separate the organic phase containing phenol and acetophenone, yielding a crude aqueous wood vinegar solution. Step 5, Purification and Refining: The non-condensable combustible gas is purified and refined to obtain pipeline-grade natural gas; Step 6: Preparation of carbon-based organic fertilizer: Mix the solid activated carbon residue with the liquid manure obtained in Step 1 to prepare carbon-based organic fertilizer.

2. The method for recycling pig manure based on synchronous resonance technology as described in claim 1, characterized in that: During the co-frequency resonance decomposition process, the emission frequency of electromagnetic waves is between 24 THz and 36 THz, and the energy density is greater than 350 kWh / L; The reaction temperature inside the resonant reactor is 320℃ to 380℃, and the reaction pressure is 5,000 Pa to 10,000 Pa.

3. The method for recycling pig manure based on synchronous resonance technology as described in claim 1, characterized in that: Step 3, multi-stage condensation, includes the following steps: a. Primary air cooling: Organic vapor is introduced into the primary air cooler to cool the temperature of the organic vapor to the range of 180°C - 220°C, and the high-temperature heavy components in the organic vapor are separated to obtain gas phase I; b. Secondary air cooling: Gas phase I is introduced into the secondary air cooler to cool the temperature of gas phase I to 80°C - 100°C, and the medium oil phase in gas phase I is separated to obtain gas phase II; c. Primary water cooling: Introduce gas phase II into the primary water cooler to cool the temperature of gas phase II to 20°C - 40°C, resulting in a mixture of gas phase III and liquid phase; d. Secondary water cooling: The gas phase III is introduced into the secondary water cooler to cool the temperature of the gas phase III to 0°C - 5°C, capturing the very light components in the gas phase III to obtain non-condensable combustible gas.

4. The method for recycling pig manure based on synchronous resonance technology as described in claim 1, characterized in that: Step four of the extraction process includes the following steps: a. Oil-water separation: The liquid mixture is introduced into an oil-water separator and allowed to separate into layers by standing due to density difference, resulting in an upper layer of light oil or a lower layer of crude wood vinegar. b. Solution extraction: The crude wood vinegar solution is introduced into the extraction vessel, an ester solvent is added, and the mixture is stirred and allowed to stand for separation to obtain an upper organic phase and a lower aqueous phase. c. Distillation: The upper organic phase is introduced into a distillation column for fractionation to obtain organic chemical products such as phenol and acetophenone with high purity; d. Aqueous phase treatment: Detect the pH value of the lower aqueous phase, add glacial acetic acid and stir to adjust the pH value to 3.0, thus obtaining wood vinegar.

5. A method for recycling pig manure based on synchronous resonance technology as described in claim 4, characterized in that: The ester solvent is ethyl acetate or butyl acetate.

6. The method for recycling pig manure based on synchronous resonance technology as described in claim 1, characterized in that: Step five, purification and refining, includes the following steps; a. Acid removal: Non-condensable combustible gas is introduced into a packed tower filled with alkaline substances to obtain acid-removed gas and waste liquid rich in acidic salts. b. Purification: The acid-removed gas is introduced into the purification tower to obtain purified gas; c. Refining: The purified gas is refined using membrane separation or pressure swing adsorption to remove impurities and obtain pipeline-grade natural gas.

7. The method for recycling pig manure based on synchronous resonance technology as described in claim 1, characterized in that: The temperature of the solid activated carbon residue is 320℃ to 350℃.

8. The method for recycling pig manure based on synchronous resonance technology as described in claim 7, characterized in that: When solid activated carbon residue is mixed with liquid sewage, one or more additives from humus, kaolin, amino acids, protein, pepper cake, soybean meal, and sawdust are added.