210 results about "Biogas production" patented technology

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation units are arranged into interconnected high-pressure and low-pressure gas recycling loops powered by high-pressure and low-pressure compressors. The multi-stage membrane system can be integrated with deoxygenation and auxiliary nitrogen removal systems. The combined system provides for the generation of efficient contaminant removal from raw biogas to generate high-purity methane products with reduced compression energy consumption.

To provide a methane manufacturing system that can reduce energy loss.SOLUTION: A system comprises a steam generating device 11 that generates steam, an electrolysis methanation device 12 that introduces a first gas mainly composed of carbon dioxide through a first pipe P1 and also introduces the steam generated in the steam generating device 11 through a second piping P2, causing electrolysis of the steam and the Sabatier reaction to produce a second gas mainly composed of methane and oxygen-containing steam that is steam containing oxygen, and sending the second gas to a third pipe P3 and the oxygen-containing steam to a fourth pipe P4. and a return pipe P5 that supplies the oxygen-containing steam sent to the fourth pipe P4 to at least one of the steam generating device 11 and the second pipe P2.SELECTED DRAWING: Figure 1

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation stages are integrated with high-pressure and low-pressure compressors with the low-pressure compressor operating in a defined pressure range. The combined system provides for efficient contaminant removal from raw biogas to generate high-purity methane products with reduced membrane area and compression energy consumption.

The invention belongs to the technical field of biogas production equipment, and particularly relates to a kitchen waste anaerobic digestion efficient treatment system, which comprises an anaerobic digestion tank, an exhaust pipe is communicated with one end of the top of the anaerobic digestion tank, and a slag discharge pipe is communicated with the bottom of the anaerobic digestion tank; the pretreatment mechanism is arranged at one end of the top of the anaerobic digestion tank; the garbage is crushed and dehydrated through the design of the pretreatment mechanism, the crushed garbage can be distributed more uniformly in the anaerobic digestion tank, microorganisms can be in full contact with the garbage, the decomposition efficiency of the microorganisms on organic matters in the garbage is improved, and therefore the overall efficiency of anaerobic digestion is improved; the solid concentration is increased, and the relatively high solid concentration is beneficial to forming a tighter reaction system in the anaerobic digestion process, so that the contact area between microorganisms and organic substances is increased, and the anaerobic digestion efficiency is further improved.

The invention discloses a method for preparing aviation kerosene (aromatic hydrocarbon components) from biogas. The method comprises the following steps: separating biogas to obtain methane and carbon dioxide, and then carrying out a two-step chemical reaction process. The method comprises the following steps: firstly, carrying out dehydrogenation aromatization on methane to obtain aromatic hydrocarbon mainly containing benzene and hydrogen, and separating methane for circulating dehydrogenation aromatization reaction; then hydrogen and aromatic hydrocarbon are merged into carbon dioxide, and the polysubstituted aromatic hydrocarbon is obtained by coupling methanol synthesis and alkylation reaction of benzene without external source hydrogen. The method provided by the invention avoids the problem of low selectivity of aviation kerosene fraction hydrocarbons in a route of Fischer-Tropsch synthesis after methane and carbon dioxide are converted into synthesis gas. According to the conversion method for highly coupling the reaction processes, a new route for producing sustainable aviation kerosene from biogas is developed.

A method for providing a fuel includes removing hydrogen sulfide and / or carbon dioxide from biogas to provide partially purified biogas, which is filled in a mobile storage system. The partially purified biogas is transported to a centralized processing facility, in the mobile storage system, by truck, rail, or ship. At the centralized processing the partially purified biogas is further processed, either to produce a fuel that is renewable or has renewable content, or to produce renewable natural gas, which is used to produce the fuel that is renewable or has renewable content.

To provide a methane producing apparatus that can reduce an amount of methanation catalyst.SOLUTION: A methane producing apparatus 1 produces methane by allowing raw material gas to pass through a first reactor 10 and a second reactor 20. Each reactor comprises: a heating part 112 which heats raw material gas to an optimal temperature; a reaction part 113 which allows raw material gas to perform methanation reaction by a catalyst maintained at an optimal temperature; a cooling part 114 which cools reaction gas; and a heat medium flow channel 13 which is a flow channel arranged in a state of surrounding the parts, and through which heat medium is flown. A heat medium in a first temperature zone which has been supplied to the heat medium flow channel performs heat exchange with reaction gas of the cooling part 114 to enter a second temperature zone higher than the first temperature zone, performs heat exchange with a catalyst of the reaction part 113 to enter a third temperature zone higher than the second temperature zone, and performs heat exchange with raw material gas of the heating part 112 to enter a fourth temperature zone lower than the third temperature zone and higher than the first temperature zone.SELECTED DRAWING: Figure 1

Provided is an anaerobic digestion process monitoring system that predicts the amount of biogas generation with high accuracy even when the activity of anaerobic microorganisms in a digestion tank changes. The present invention is provided with: a first sensor (4) for measuring the amount of organic waste fed into a digestion tank (2) and outputting load data as the measurement result; a second sensor (5) for measuring the property of the fermentation broth inside the digestion tank (2) and outputting fermentation broth property data as the measurement result; a preprocessing unit (12) that uses the first estimation model to obtain estimated activity index data indicating the degree of activity of the anaerobic microorganisms from the load data and the fermentation broth property data; and a gas generation amount prediction unit (13) that uses the second estimation model to obtain a biogas generation amount predicted value from the load data, the fermentation broth property data, and the estimated activity index data.

A method for producing a fuel includes transporting one or more pressure vessels containing pressurized biogas from a first location to a second location, and removing biogas from the one or more pressure vessels at the second location. The fuel production process is improved by controlling the decanting flow rate to provide a total decant time greater than 30-40 minutes, by actively heating biogas contained within the one or more pressure vessels, or some combination thereof.

Straw crushing equipment suitable for biogas production belongs to the technical field of biogas production and comprises a straw spreading and conveying part, a straw compacting and longitudinal cutting part, a transverse cutting part and a vibrating screen and secondary transverse cutting part. The straw spreading and conveying part conveys the embraced straw from the left end to the straw compacting and longitudinal cutting part, the longitudinal cutting part is provided with a longitudinal cutter assembly to cut the straw into thin strips, then the thin strips enter the transverse cutting part to be transversely cut off to form particles, and finished product small particles are leaked through a vibration screen, the secondary transverse cutting part and a vibration screen. And large particles are moved to the secondary transverse cutter assembly to be cut into small particles. According to the straw cutting machine, straw can be cut into small particles, the particle size can be smaller than or equal to 3 mm, and the requirement of biogas production is fully met.

The invention relates to the technical field of organic solid waste treatment, in particular to a process system for hydrogen production and co-production of biological natural gas from biological crude synthesis gas, which comprises a purification unit, a hydrocarbon regulation unit, an acid removal unit, a methane upgrading unit, a hydrogen recycling and purifying unit and a methane recycling and purifying unit which are connected in sequence. The purification unit is used for removing impurities through pre-impurity removal, compression, dry-process impurity removal and wet-process desulfurization to produce purified synthesis gas and sulfur; the hydrocarbon adjusting unit is pressurized through a centrifugal compressor and adjusts the hydrogen-carbon ratio; the acid removal unit is used for removing acid gas and organic sulfur; the methane upgrading unit is used for converting CO / CO2 into methane through methanation reaction; and the recycling unit purifies hydrogen through pressure swing adsorption and recycles methane by using a membrane separation technology to produce biogas. The problems of low purity and insufficient raw material utilization rate of the traditional process are solved through the circulation process, the co-production of high-purity hydrogen and biogas is realized, and the additional value of resources is improved.

The invention relates to a pre-fermentation method for improving biogas production of straws and a biogas production fermentation system. The pre-fermentation method comprises the following steps: S1, preparing a mixed microbial agent to be fermented; the mixed microbial agent is prepared by inoculating the following zymophyte in parts by weight into a fermentation culture medium according to the total inoculation amount of 3-10% (v / v): 5-50 parts of bacillus subtilis, 10-20 parts of white-rot fungi, 5-10 parts of aspergillus oryzae, 5-10 parts of trametes versicolor and 5-10 parts of trichoderma viride; s2, uniformly mixing the mixed microbial agent with the micro-nano bubble water, and fermenting to form an enhanced hydrolysis bacterium solution containing a microbial agent fermentation solution and an enzyme solution; s3, spraying enhanced hydrolysis bacteria liquid onto the straws for enhanced hydrolysis so as to complete pretreatment before fermentation and biogas production; wherein the volume of the reinforced hydrolytic bacteria liquid required by each kg of straw is 3-5L. Compared with the prior art, the mixed microbial agent and the micro-nano bubble water are used for carrying out cooperative treatment on the straw, so that the gas production efficiency and the methane production amount of the straw can be effectively improved.

The invention describes the coupling of an anaerobic biological system (110) with a bioelectrochemical system (120) in order to intensify the operation of the anaerobic system and recover the ammoniacal nitrogen contained in a digestate (3). The invention determines at least one operating parameter of an evaporation extraction system drawing off volatile organic matter from a liquid medium as a function of a value of a characteristic ratio of the mixture of this volatile organic matter with the digestate (3), this ratio being representative of an amount of biodegradable organic matter relative to an amount of ammonium ions. The value of this ratio is determined as a function (bi) of a target yield of ammonium ions extracted from the bioelectrochemical treatment system or of a target concentration of ammonium ions separated by this system, and (bii) of the value of at least one parameter representative of the capacity of the electrochemical treatment system to separate the ammonium ions and of at least one quality parameter of the digestate.

The invention belongs to the technical field of feces treatment, particularly relates to integrated rural toilet feces deep separation treatment equipment, and aims to solve the problems that existing equipment is poor in operation stability and not ideal in total phosphorus and ammonia nitrogen pollutant removal rate, the integrated rural toilet feces deep separation treatment equipment comprises a solid-liquid separation module, an anaerobic treatment tank, an aerobic treatment tank and a liquid-phase flocculation unit, a solid phase and a liquid phase of feces are separated through the solid-liquid separation module, the liquid phase is flocculated through the liquid phase flocculation unit, the liquid phase and the solid phase are put into corresponding fermentation areas of the anaerobic treatment tank to be subjected to anaerobic fermentation treatment, the liquid phase is conveyed to the aerobic treatment tank to be subjected to further aerobic treatment, and the liquid phase and the aerobic treatment tank are subjected to anaerobic fermentation treatment. The integrated treatment of solid-liquid separation, anaerobic biogas production and aerobic denitrification of rural toilet feces is realized, the solid phase and the liquid phase after the integrated treatment can be respectively subjected to further resource utilization, and the system is extremely suitable for being used in rural areas.

The invention discloses an advanced organic wastewater treatment method and treatment device based on an advanced oxidation coupling coagulation denitrification method, and relates to the technical field of landfill leachate treatment, kitchen waste treatment, kitchen garbage treatment and the like, the treatment device comprises a coagulation tank unit, a flocculation tank unit, an air floatation and filter tank unit, an ozone catalysis unit and an activated carbon filter unit which are connected in sequence, the ozone generation unit and the tail gas decomposition unit are connected with the ozone catalysis unit. According to the invention, a traditional nanofiltration membrane advanced treatment process in the industry is replaced by an advanced treatment process of coagulation, flocculation, air floatation, filtration, ozone catalysis and activated carbon filtration, so that the generation of a concentrated solution is avoided; the defect that the biogas yield of an anaerobic digestion system is reduced due to the fact that the sulfate-containing concentrated solution flows back to the anaerobic digestion system of the landfill leachate treatment plant or the kitchen waste treatment plant is overcome, the load of a biogas desulfurization system of the landfill leachate treatment plant and the kitchen waste treatment plant is reduced, and the consumption cost of the concentrated solution is greatly reduced.

The invention discloses an integrated anaerobic fermentation self-heating biogas production system and method, and belongs to the technical field of biomass energy. In the system disclosed by the invention, a thermal medium outlet of a solar heat collection unit is connected with a thermal medium inlet of a heat storage unit; a heat medium outlet of the heat storage unit is connected with a heat medium inlet of the anaerobic fermentation unit; a gas outlet of the anaerobic fermentation unit is respectively connected with the post-treatment system and the torch incineration device; a natural gas outlet of the post-treatment system is connected with the torch incineration device; a waste heat outlet of the post-treatment system is connected with a thermal medium inlet of the anaerobic fermentation unit; a cold medium outlet of the anaerobic fermentation unit is connected with a cold medium inlet of the heat storage unit; and a cold medium outlet of the heat storage unit is connected with a cold medium inlet of the solar heat collection unit. The system solves the technical problem that an existing method is high in energy consumption and difficult to achieve efficient operation of the whole system.

The invention discloses a carbon-based electrode-microorganism self-assembled compound, a preparation method thereof and application of the carbon-based electrode-microorganism self-assembled compound in strengthening anaerobic fermentation of agricultural wastes. The compound is formed by self-assembly of direct interspecific electron transfer (DITE) functional microorganisms (anode reduction geobacter and methanobacterium flexural) on the surface of a high-conductivity carbon-based electrode under the induction of a micro electric field, the relative abundance of the anode reduction geobacter is 65-82%, and the relative abundance of the methanobacterium flexural is 18-35%. During preparation, the carbon-based electrode is cleaned by acetone, ethanol and water, then the carbon-based electrode, a reference electrode and a counter electrode form a three-electrode system, and the three-electrode system is induced for 3-5 days in a micro electric field of-0.2-0.2 V to form a compound. 1-5 g / L of the compound is added into a straw-excrement mixed substrate (25-40 g VS / L) subjected to alkali pretreatment, anaerobic fermentation is conducted for 50 d after biogas slurry is inoculated, the pH can be stably maintained at 7.2-8.0, the accumulated biogas yield reaches up to 450-630 mL / g VS, and the volume fraction of methane is 68-82%. The process is simple, the compound is high and stable in activity, and efficient resource utilization of agricultural waste can be achieved.

Disclosed is a system for reducing an amount of organic waste and increasing biogas production, combined with a hydrothermal carbonization device having improved energy consumption efficiency. According to an aspect of the present invention, provided is a system for reducing an amount of organic waste and increasing biogas production, the system comprising: a storage tank configured to receive and store organic waste; an anaerobic digester configured to digest organic waste from the storage tank, digest organic matter, and produce biogas; a dewatering unit configured to primarily dewater organic waste discharged from the anaerobic digester; a hydrothermal carbonization device configured to receive and hydrothermally carbonize the dewaterd organic waste; and a filter press configured to secondarily dewater the hydrothermally carbonized product discharged from the hydrothermal carbonization device.

The invention discloses a variable-volume CSTR anaerobic fermentation tank which comprises a fermentation tank body, the fermentation tank body is composed of a top cover and a tank body, the bottom of the tank body is connected with a tank foundation, and the interior of the tank body is divided into a jacking area at the bottom and a fermentation area at the top by a middle sealing layer; a plurality of jacking units controlled by a controller to stretch out and draw back are arranged at the bottom of the middle sealing layer, and the jacking units can drive the middle sealing layer to ascend and descend, so that the volume of the fermentation area is changed. The volume of a fermentation area in the fermentation tank body can be changed along with the fluctuation of the feeding amount through the lifting of the jacking unit, so that the hydraulic retention time in the tank tends to be stable, and the fermentation effect is ensured; and the submersible stirrer and the shell breaking stirrer are used for breaking shells, so that the fermentation reaction is not influenced, the fermentation effect and the biogas yield are improved under the condition of saving energy consumption, and the fermentation effect is further ensured.

The invention is suitable for the field of digital control, and discloses an energy recovery method and system for agricultural non-point source pollution treatment and a storage medium. The energy recovery method for agricultural non-point source pollution treatment comprises the steps that if to-be-treated pollutants are detected, component information of the to-be-treated pollutants is detected, the component information comprises the carbon nitrogen ratio, the water content and the organic matter content, and the to-be-treated pollutants comprise at least one of livestock and poultry breeding waste, crop straw, rural domestic sewage and agricultural production wastewater; according to the component information, a target energy conversion process is selected, and the target energy conversion process comprises at least one of an anaerobic fermentation biogas preparation process, a biomass pyrolysis fuel gas production process, a sewage anaerobic electricity production process and a straw solidification heat production process; according to the target energy conversion process, the recovered energy is output, collected and stored, and the energy comprises at least one of methane, combustible mixed gas, electric energy and heat energy. The conversion efficiency of energy recovery is improved.

The invention discloses a method for improving anaerobic gas production stability of kitchen waste by adding carbon and iron materials in a combined mode, and the method comprises the following steps that S1, after the kitchen waste is fully smashed, the kitchen waste is added into an anaerobic reactor to be subjected to anaerobic fermentation methane production treatment; s2, a certain amount of biochar is added into an initial system for producing methane through anaerobic fermentation of the kitchen waste, a mixed solution is formed through mixing and stirring, and the effect of improving the anaerobic fermentation stability is obvious after the reaction; and S3, adding a certain amount of ferroferric oxide into the mixed solution, stirring and carrying out anaerobic digestion reaction so as to improve the enzyme activity of microorganisms and increase the biogas production rate of biogas. The biochar and the ferroferric oxide are added in the initial stage of anaerobic fermentation, so that the inhibition effect of harmful substances on microorganisms can be relieved, growth sites and nutrient elements are provided for the microorganisms, the growth of the microorganisms is accelerated, the activity of the microorganisms is improved, and the generation of methane is promoted; further, the biogas production rate of biogas is improved, and the stability of a reaction system is maintained.

The invention discloses a control method of a wine brewing wastewater anaerobic reactor, belongs to the technical field of wastewater biological treatment, and mainly solves the problems of inaccurate judgment of an operation stage and single control strategy in the prior art. According to the method, parameters such as a pH value, COD (Chemical Oxygen Demand), VFA (Volatile Fatty Acid) concentration, biogas yield and ATP (Adenosine Triphosphate) content are monitored in real time, and an operation process is divided into three stages, namely a starting stage, a steady-state stage and an abnormal recovery stage. The load increasing rate and the pH range are controlled in the starting period; in the steady-state period, the water inlet flow is adjusted through a PID algorithm to maintain stable operation; and measures of reducing flow, increasing stirring, adding an alkaline agent and the like are taken in an abnormal recovery period. Through multi-parameter collaborative judgment and differential control strategies, accurate recognition and dynamic adjustment of the operation stage are achieved, the stability and the treatment efficiency of the treatment system are remarkably improved, and the method is suitable for anaerobic biological treatment of various kinds of wine brewing wastewater.

The utility model provides a membrane filtration decarburization device for biogas production, which relates to the technical field of biogas production and comprises a reaction mechanism and a main body mechanism, the reaction mechanism comprises an oxidation tank, a cover plate is clamped at the top of the oxidation tank, a stirring shaft is inserted into the cover plate in a penetrating manner, a stirring paddle fixedly sleeves the outer surface wall of the stirring shaft, an agent inlet pipe, an oxygen inlet pipe and an air inlet pipe are fixedly communicated with the top of the cover plate, and a motor is fixedly mounted at the top of the cover plate. And the output end of the motor is fixedly connected with the top end of the stirring shaft. According to the device disclosed by the utility model, a catalyst is poured into the oxidation tank from the catalyst inlet pipe, biogas is introduced by utilizing the gas inlet pipe, oxygen is introduced by utilizing the oxygen inlet pipe, and the stirring paddle is driven to rotate by utilizing the motor, so that the catalytic oxidation efficiency is conveniently improved, hydrogen sulfide and volatile organic compounds in the biogas are removed, and metal parts in the device are prevented from being corroded; the separation performance of the membrane is influenced.

The invention describes the coupling of a digester (110) with a bioelectrochemical system (120) in order to intensify the operation of the digester and recover the ammoniacal nitrogen contained in the digestate (3). The invention determines at least one operating parameter of the digester as a function of a value of a characteristic ratio of the digestate (3) or of the liquid fraction (3a) thereof, representative of an amount of biodegradable organic matter relative to an amount of ammonium ions. The value of this ratio is determined as a function (bi) of a target yield of ammonium ions extracted from the bioelectrochemical treatment system or of a target concentration of separated ammonium ions present in the bioelectrochemical treatment system, and (bii) of the value of at least one operating parameter of the bioelectrochemical treatment system representative of the capacity of the electrochemical treatment system to separate the ammonium ions and of the value of at least one quality parameter of the digestate or of the liquid fraction thereof.

The invention describes the coupling of a digester (110) with a bioelectrochemical system (120) to intensify the operation of the digester and recover the ammoniacal nitrogen contained in the digestate (3). The invention determines at least one operating parameter of the digester as a function of a value of a ratio characteristic of the digestate (3) or its liquid fraction (3a), representative of a quantity of biodegradable organic matter relative to a quantity of ammonium ions.The value of this ratio is determined based on (bi) a target yield of ammonium ions extracted from the bioelectrochemical treatment system or a target concentration of separated ammonium ions present in the bioelectrochemical treatment system, and (bii) the value of at least one operating parameter of the bioelectrochemical treatment system representative of the electrochemical treatment system's capacity to separate ammonium ions, and the value of at least one quality parameter of the digestate or its liquid fraction. (Shorthand figure: Figure 1.)

The invention discloses a UASB (Upflow Anaerobic Sludge Blanket) wastewater treatment method. The method comprises the following steps: wastewater pretreatment; treating with a multi-stage UASB reactor; performing electrochemical oxidation treatment; product collection and biogas recovery; and post-treating the wastewater. Through the multi-stage UASB reactor system, the wastewater treatment efficiency and the biogas yield can be remarkably improved, and each stage of reactor runs under different operation conditions to adapt to the characteristic change of the wastewater, so that the problem of load fluctuation when a single-stage reactor is used for treating the high-concentration organic wastewater can be effectively solved; the stability and the impact resistance of the system are enhanced; before wastewater enters the first-stage UASB reactor, a heat exchanger is used for preheating the wastewater so as to improve the activity and degradation efficiency of anaerobic microorganisms and ensure the reaction effect, meanwhile, a plurality of reaction sections are arranged in the first-stage UASB reactor, each section has different sludge concentration and flow velocity, gradient flow is formed, degradation of different organic matters is promoted, and the wastewater treatment effect is improved. The wastewater treatment effect is further ensured.

A biogas optimization system, including a machine learning model trained to identify features indicative of biogas production based on past biogas production and the composition and flow of past substrates provided to a digester. Using the machine learning model, the biogas optimization system predicts biogas production from a digester in view of the composition of substrates provided to the digester (determined, for example, using sensor data from diffuse reflectance detectors). Some embodiments also predict an optimal composition of the digester for optimizing biogas production (e.g., optimal percentages of lipids, protein, and / or carbohydrates) and adjust the flow and / or volume of a substrate to the digester. To predict the optimal composition of the digester, the machine learning model may also be trained on a physics-based model of the anaerobic digestion processes (e.g., Anaerobic Digestion Model No. 1 (ADM1)) and / or data captured during laboratory simulations of the anaerobic digestion processes.

An anaerobic digestion process monitoring system can accurately predict the amount of biogas produced even when the activity of anaerobic microorganisms in a digester fluctuates. The system comprises: a first sensor (4) for measuring the amount of organic waste fed into a digester (2) and outputting load data as a measurement result; a second sensor (5) for measuring the properties of a fermentation liquid inside the digester (2) and outputting fermentation liquid property data as a measurement result; a preprocessing unit (12) for calculating estimated activity index data indicating the activity of anaerobic microorganisms based on the load data and the fermentation liquid property data using a first estimation model; and a gas production prediction unit (13) for calculating a predicted value of biogas production based on the load data, the fermentation liquid property data, and the estimated activity index data using a second estimation model.

The utility model provides raw material treatment equipment for biogas production. The raw material treatment equipment comprises an operation box, a cutting assembly is arranged at the top of the operation box, and a crushing assembly is arranged in the operation box; the cut-off assembly comprises a protective guard arranged on the top of the operation box, and a placing frame is arranged on the inner side of the protective guard and located on the top of the operation box. According to the raw material treatment equipment for biogas production, straw is put into the protective frame from the left side of the protective fence, the output end of the first motor rotates to drive the feeding roller to rotate, then the feeding roller pokes the straw to the right side, meanwhile, a cam rotates to drive the connecting plate to move up and down, and the straw is fed into the protective frame; according to the straw cutting device, the cutting knife can repeatedly move up and down on the inner side of the placing frame to segment straws by matching with the connecting block rotationally connected with the placing frame and the cutting knife moving up and down in a limiting manner, the structure is simple and practical, the straws with poor crushing effect can be conveniently segmented in advance, and the subsequent mixing and stack retting effects are improved.

The invention discloses a rural energy system multi-subject collaborative planning method considering biomass transaction, and the method comprises the steps: building a rural energy system multi-subject collaborative planning model, analyzing the seasonal characteristics of rural region biomass, and building a biomass available amount model and a biogas production rate model of a biogas station; according to the biomass available amount model and the gas production amount model, in combination with the interest appeal and transaction mode of each subject, constructing an objective function and constraint model of a rural integrated energy system operator and a pumped storage power station operator; and according to the objective function and the constraint model, solving the multi-agent collaborative planning model to obtain an optimal planning scheme and a transaction mechanism of the rural energy system. According to the invention, initiative of each subject can be exerted, biomass resources are fully scheduled, collaborative planning operation of multiple subjects in a rural energy system is realized, and benefits of each subject are effectively guaranteed.