4205results about "Waste based fuel" patented technology

The present invention relates to a hydrogen sulfide content detection device, and in particular to a hydrogen sulfide content detection device inside a biogas tank. Provided is a hydrogen sulfide content detection device inside a biogas tank that can be easily moved and has accurate detection results. A hydrogen sulfide content detection device inside a biogas tank includes a mounting block, rollers, a bracket, a detector, a pipeline, etc.; rollers are rotatably provided on the front and rear sides of the left and right sides of the lower part of the mounting block, a bracket is provided on the top of the mounting block, a detector is provided on the upper part of the bracket, and pipelines are connected to the left and right sides of the upper part of the detector, and the upper part of the pipeline passes through the top of the bracket. After the straight pipe moves downward, it enters the biogas tank, thereby extracting the gas inside the biogas tank for the detector to detect the hydrogen sulfide content, so that the detection result is more accurate. At the same time, because the device is easy to move, it is convenient for the staff to detect other biogas tanks in turn.

The invention relates to a system for producing methane through biogas reflux coupling microbial electrolysis cell (MEC) enhanced anaerobic digestion and application. A reactor system comprises an MEC anaerobic digestion system and a biogas reflux system. The MEC anaerobic digestion system is provided with a biological anode plate and a biological cathode plate, electroactive microorganisms attached to the biological anode plate convert organic matters into carbon dioxide and generate electrons, and electroactive microorganisms attached to the biological cathode plate convert carbon dioxide into methane; a secondary biogas separation tank is adopted for biogas separation in the biogas backflow system, carbon dioxide in the biogas is more effectively separated out, and the carbon dioxide intermittently flows back to a biological cathode plate of the MEC anaerobic digestion system after being collected. Compared with the prior art, the anaerobic digestion treatment of the organic solid waste is realized, and the in-situ upgrading of the biogas is also realized; and the separated carbon dioxide reflux can be efficiently methanated, so that the emission of the carbon dioxide is reduced, the in-situ treatment of the carbon dioxide is realized, the intermediate links are reduced, and the cost is reduced.

Methods for stimulating plant growth and / or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and / or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

The invention discloses a biogas fermentation purification liquefaction and carbon capture process. The process comprises a biogas fermentation system for performing high-temperature fermentation on biomass; the biogas purification and liquefaction system, the CO2 purification and liquefaction system and the organic fertilizer production system are arranged at the biogas residue output end of the biogas fermentation system to produce organic fertilizer; a thermal energy recovery system; according to the invention, a high-temperature facultative anaerobic hydrolysis and high-temperature anaerobic fermentation process is provided, so that high-concentration biomass biogas is produced; cH4, H2S and CO2 in the biogas are separated and liquefied by adopting a process of'wet process and dry process serial desulfurization, PSA (Pressure Swing Adsorption) + MDEA (Methyl Methanol Ether Alcohol) decarburization, molecular sieve dehydration, single-order two-stage mixed refrigerant compression and propane refrigeration compression ', and produced liquid CH4 and CO2 are recycled; meanwhile, the biogas residues are subjected to a secondary fermentation technology under the action of microorganisms to obtain a solid organic fertilizer; in addition, the solar heat collection and heat pump technology is utilized, and the whole-field heat energy is recycled to supply heat to the biogas fermentation system.

The invention belongs to the field of microbial electrochemistry and solid organic waste recycling, and discloses a microbial electrosynthesis enhanced solid wastewater hydrolysis and anaerobic digestion biogas high-value utilization system coupling microbial electrosynthesis, organic solid waste electrochemical-biological synergistic hydrolysis oxidation and anaerobic digestion. The system comprises a cathode chamber and an anode chamber which are separated by an ion exchange membrane, an electrochemical driving device and an anaerobic digestion unit communicated with the anode chamber. And the cathode chamber is provided with a cathode electrode and an anaerobic acetic acid production microbial system and is communicated with biogas generated by anaerobic digestion, so that carbon dioxide in the biogas is reduced at the cathode to generate acetic acid and methane-enriched gas is output. The anode chamber is provided with an anode electrode, organic solid waste and a hydrolytic microorganism system are added, electrochemical-biological synergistic hydrolytic oxidation of the organic solid waste and hydrolysates of the organic solid waste is used as an anode reaction, oxygen evolution is inhibited, and oxygen transmembrane migration is reduced; and the hydrolysate in the anode chamber flows into the anaerobic digestion unit to produce biogas, so that the integrated operation of solid wastewater hydrolysis and biogas upgrading is realized.

The invention relates to the technical field of filtering devices, and particularly discloses a sustainable aviation fuel raw material treatment device and method.The sustainable aviation fuel raw material treatment device comprises a barrel, a filtering mechanism and a cleaning mechanism, the filtering mechanism comprises a plurality of filtering assemblies and a first driving structure, and each filtering assembly comprises two filtering plates and a hinge shaft; the two filter plates are hinged to the hinge shafts through first torsional springs correspondingly, every two adjacent filter assemblies can abut against each other, the interior of the barrel is divided into a pre-filter cavity and a post-filter cavity, the cleaning mechanism comprises a back-flushing assembly and a collecting assembly, and the back-flushing assembly comprises an adjusting rod and a second driving structure. The adjusting rod is used for driving the two filter plates in the same group to reversely rotate around a hinged shaft and are arranged in a V shape, the collecting assembly comprises a scraping plate and a third driving structure, filter holes are densely distributed in the scraping plate, and an impurity collecting groove is formed in the lower end of the scraping plate; when the filter plate is blocked, the filter plate can be subjected to back-flushing cleaning through the back-flushing assembly, washed impurities are collected through the collecting assembly, and the separation effect is guaranteed.

A device for separating a gas stream which has a compressor and three membrane separation units in series, connected to pass the retentate stream of each of the first two units to the subsequent membrane separation unit, comprises conduits for recycling the permeate streams of the second and the third membrane separation unit to upstream of the compressor and a control device controlling the fraction of the second permeate stream which is recycled. Adjusting which fraction of the second permeate is recycled can be used to maintain a target composition of the retentate obtained in the third membrane separation unit when the flow rate or the composition of the gas stream changes.

The utility model discloses a water distribution device of an IC anaerobic reactor, which relates to the technical field of wastewater treatment and comprises an IC anaerobic reactor tank body, a plurality of water distribution branch pipes are fixedly connected inside the IC anaerobic reactor tank body, extend to the outer side of the IC anaerobic reactor tank body and are fixedly connected with a water distribution main pipe, and the water distribution main pipe is connected with a water distribution pipe. A first flow guide plate is fixedly connected in the IC anaerobic reactor tank body, a second flow guide plate is fixedly connected in the IC anaerobic reactor tank body, a plurality of gas-liquid separation tanks are fixedly connected to the top of the IC anaerobic reactor tank body, downcomers are fixedly connected in the gas-liquid separation tanks, and the downcomers are fixedly connected in the IC anaerobic reactor tank body. The water distribution device has the beneficial effects that through the mutual matching of the water distribution main pipe, the water distribution branch pipes and the first guide plates, after wastewater is sprayed into the tank body of the IC anaerobic reactor through the water distribution branch pipes, rotational flow is formed through the first guide plates, so that water distribution is uniform, and the wastewater and granular sludge are fully mixed.

A process and / or system for processing a pressurized gas mixture by membrane separation. Portions of the pressurized gas mixture are withdrawn and provided as a plurality of pressurized gas streams at successively lower pressures. Each portion, provided as a respective pressurized gas stream, is provided for processing in a respective membrane system, each of which is at a different pressure level. Partially purified streams produced by one or more membrane systems are provided for processing at lower pressure levels (e.g., where they are combined with one of the pressurized gas streams). Accordingly, costs associated with recycle compression are reduced and / or eliminated.

The present disclosure provides agronomically stable liquid agricultural compositions, methods of formulation thereof, and methods of application thereof. The agricultural compositions comprise nitrogen-fixing microorganisms and one or more of a buffering agent, a microbial stabilizer, and a physical stabilizer. The disclosed liquid agricultural compositions have a longer shelf life and greater ease of application than other existing dry and liquid formulations. The disclosed liquid agricultural compositions are stable for a period of thirty days or longer with low toxin accumulation and high microbial stability. The compositions are suitable for use on agricultural plant tissues or the environs thereof for providing a source of fixed atmospheric nitrogen to the agricultural plant. The compositions are used to increase crop yield and decrease yield variance.

The invention provides an inoculum domestication method for relieving acid or ammonia nitrogen inhibition of an anaerobic fermentation system, which comprises the following steps of: carrying out constant-temperature anaerobic fermentation culture at medium temperature (30-35 DEG C) or high temperature (50-55 DEG C) until the gas yield is stable by taking livestock manure, activated sludge, industrial anaerobic digestion residues or mineralized refuse biogas fermentation liquor and the like as inoculums; the obtained inoculum is an inoculum which has relatively strong acid tolerance or ammonia nitrogen tolerance after domestication. The domesticated inoculum with good tolerance and the original untreated inoculum are mixed according to a certain proportion and then put into an anaerobic fermentation system, and wet fermentation (TS = 5-10% and total solid content) or dry fermentation (TS = 20-30%) is carried out, so that the pH value of the anaerobic fermentation system is recovered to a state suitable for growth of methanogens.

The invention relates to pig manure biomass granular fuel and a preparation method thereof, belongs to the technical field of biomass fuel and environmental protection, and particularly relates to a comprehensive treatment and resource utilization technology of livestock and poultry breeding manure. Carrying out solid-liquid separation on the pig farm fresh pig manure through a spiral dry-wet separator to obtain pig manure residues; the method comprises the following steps: drying pig manure residues to reduce the water content to 22-30wt%, then crushing and screening, burdening the pig manure residues, the pretreated sawdust and chicken manure biochar, and further mechanically stirring and mixing for 10-15 minutes to obtain a uniform mixture with the water content of 22-28wt%; carrying out extrusion forming on the obtained mixture by adopting a biomass granulator to obtain the pig manure biomass granular fuel; and naturally cooling the formed pig manure biomass pellet fuel to room temperature, and screening out unqualified products with the length of less than 4mm to obtain oversize products which are qualified pig manure biomass pellet fuel finished products. The method not only solves the problem of ecological environment pollution caused by the pig manure, but also provides thinking and direction for reduction, harmlessness and resource comprehensive utilization of the livestock and poultry manure.

The invention relates to the technical field of biomass particle fuel preparation, in particular to straw biomass particle fuel preparation equipment which comprises a conveying pipe, a caliber adjusting mechanism, a particle length adjusting mechanism and a particle size adjusting mechanism and further comprises an outer side mounting seat fixedly mounted at one end of the conveying pipe and a synchronous belt wheel set rotationally mounted on one side of the mounting seat. A servo steering engine is fixedly mounted at the top of the mounting base, a driving bevel gear is fixedly mounted at the output end of the servo steering engine, and a transmission assembly extending to the bottom is rotationally mounted at the bottom of the mounting base. A servo steering engine drives a driving bevel gear to adjust different particle sizes of a particle size adjusting mechanism, and meanwhile, a bevel gear ring in the particle size adjusting mechanism drives a particle length adjusting mechanism and a caliber adjusting mechanism to work cooperatively through a transmission assembly, so that the length of straw particles is controlled in a coordinated mode; therefore, the prepared straw biomass particles are ensured to reach ideal particle shapes, and synchronous adjustment of particle sizes and particle lengths in the preparation process is ensured.

The biomass particle discharging device comprises a conveying frame and a conveying belt arranged at the top end of the conveying frame in a transmission mode, a material storage box is fixed to one side of the top end of the conveying frame, vertical plates are fixed to the two sides of the top end of the material storage box, a sliding plate is arranged between the two vertical plates in a liftable mode, and the sliding plate is connected with the vertical plates through sliding assemblies. A plurality of dredging rods are fixed to the bottom end of the sliding plate, a reciprocating assembly for driving the sliding plate to move is arranged on one side of the vertical plate, the sliding assembly comprises sliding blocks fixedly arranged at the two ends of the sliding plate, and sliding grooves allowing the sliding blocks to slide are formed in the opposite sides of the two vertical plates; according to the scheme, when the biomass particles are discharged, the reciprocating assembly moves to drive the sliding plate to reciprocate up and down, the sliding plate drives the dredging rod to reciprocate up and down, the biomass particles in the storage box can be dredged, rapid discharging of the biomass particles is facilitated, and the discharging efficiency of the biomass particles is improved.

The utility model relates to the technical field of sewage treatment, in particular to a multi-stage ecological pig raising wastewater treatment system, which comprises an anaerobic baffled reactor, an anaerobic baffled reactor, an anaerobic baffled reactor and an anaerobic baffled reactor, a plurality of partition walls are arranged in the anaerobic baffled reaction tank and are divided into a plurality of independent anaerobic baffled reaction chambers, water passing pipes are arranged at the upper parts of the partition walls, and sewage sequentially flows among the anaerobic baffled reaction chambers through the water passing pipes; mud guide inclined walls are arranged on two sides of the bottom of the anaerobic baffling reaction tank; a settling mud inclined wall is arranged below the water outlet of the anaerobic baffling reaction tank; the multi-stage reverse-flow anaerobic biological filtration unit is communicated with the anaerobic baffling reaction tank; comprising a plurality of filter chambers filled with filler, and the filter chambers are sequentially communicated through water passing holes which are formed in a high-low staggered manner; the aerobic ecological purification system comprises a middle water tank, and part of effluent of the middle water tank flows back to the anaerobic baffled reactor and the microalgae purification tank. The device is friendly to ecological environment, low in energy consumption, small in dosage, low in operation cost and simple and convenient to operate.

Methods for stimulating plant growth and / or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and / or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

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.

The invention discloses a self-gas-stirring partition plate type efficient anaerobic bioreactor and a method, and belongs to the field of nitrogen and sulfur-containing organic wastewater biological treatment devices. The reactor sequentially comprises a first reaction zone, a second reaction zone, a third reaction zone and a three-phase separation zone which are communicated with one another from bottom to top. Anaerobic granular sludge is inoculated in the first reaction zone for hydrolytic acidification reaction; anaerobic activated sludge with denitrification and sulfate reduction functions is inoculated in the second reaction area, and nitrate and sulfate reduction reaction is carried out. Anaerobic activated sludge with a methanogenesis function is inoculated in the third reaction area, and a methanogenesis reaction is carried out. The three reaction zones are separated by ecological partition plates to ensure water and air permeability and no mud permeability. According to the reactor, the ecological partition plates are arranged to realize anaerobic reaction function division, and multiple components in complex organic wastewater are synergistically removed, so that the pollutant removal efficiency is improved; the flow state in the reactor is improved through self-produced gas backflow, the mass transfer and detoxification effects are enhanced, and the decontamination effect and stability of the reactor are improved.

The invention belongs to the technical field of organic solid waste resource utilization, and particularly relates to iron modified waste residue biochar as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing lignin-rich waste residues with a specific ferric salt solution, obtaining a carbon precursor by virtue of an impregnation method, and promoting biomass pyrolysis to form a graphitized structure by virtue of pyrolysis calcination, so as to obtain the Fe-loaded modified waste residue biochar. The obtained iron-modified waste residue biochar is added into an anaerobic digestion system with organic waste as a substrate, the stability of the anaerobic system can be enhanced by means of the high adsorption and buffering capacity of the biochar, Fe loaded on the surface of the iron-modified waste residue biochar can serve as an electronic mediator, the activity of related enzymes in the anaerobic system is enhanced, and the anaerobic digestion efficiency is improved. Meanwhile, the electrochemical performance of the biochar is enhanced, microelements required by growth can be provided for microorganisms, and the digestion efficiency of the system is improved, so that the total yield of methane subjected to anaerobic digestion is increased, and harmless treatment and resource utilization of organic wastes can be realized.

A method for providing a fuel includes providing biogas from a plurality of biogas sources, the biogas from each biogas source produced in a process comprising filling a vessel with raw biogas or partially purified biogas to a pressure of at least 1500 psig and transporting the filled vessel to a centralized processing facility by vehicle. A fuel is produced in a fuel production process that includes feeding the biogas transported to the centralized processing facility to a biogas upgrading system that is configured to provide a carbon dioxide removed from the biogas. The removed carbon dioxide is provided for transport by vehicle and / or pipeline and / or sequestered to offset greenhouse gas emissions attributed to compressing the biogas for transport.

A process and / or system for producing fuel using renewable hydrogen having a reduced carbon intensity. The renewable hydrogen is produced in a hydrogen production process comprising methane reforming, wherein at least a portion of the feedstock for the hydrogen production process comprises upgraded biogas sourced from a plurality of biogas plants. Each of the upgraded biogases is produced in a process that includes collecting biogas comprising methane and carbon dioxide, capturing at least 50% of the carbon dioxide originally present in the collected biogas and producing the upgraded biogas. Storage of the captured carbon dioxide reducing a carbon intensity of the fuel, without having to provide carbon capture and storage of carbon dioxide from hydrogen production.

The invention relates to the field of sludge circulation treatment, in particular to a sludge circulation treatment method capable of reducing pollution and carbon. The sludge circulation treatment method capable of reducing pollution and carbon comprises the following treatment steps: S1, sludge disintegration: selecting a sludge sample in sewage, and screening out dominant bacteria and reproduction conditions; s2, anaerobic digestion treatment: adding the screened strains into a sludge anaerobic digestion device for anaerobic digestion treatment; s3, sewage treatment: conveying the sewage subjected to anaerobic digestion treatment into a sewage treatment device, and selecting organic matters dissolved out of sludge in the step of anaerobic digestion treatment as a denitrification carbon source for biological treatment. According to the present invention, the sludge digestion innovative process is adopted, the original anaerobic reaction process in the sewage process is utilized, the decomposition and acidification effects on the biochemical excess sludge are enhanced, the methanogenesis reaction is inhibited through the internal ammonia nitrogen, the dissolution acid production efficiency is improved, the reaction time is shortened, and the on-site resource utilization of the sludge is achieved.

The utility model belongs to the technical field of biomass biogas treatment, and discloses a biogas filtering device which comprises a tank body, a wire mesh demister and a cleaner, and the tank body is provided with a gas inlet, a gas outlet and a water outlet; the interior of the tank body is divided into an upper cavity and a lower cavity by the wire mesh demister, the upper cavity is communicated with the air outlet, and the lower cavity is respectively communicated with the air inlet and the water outlet; the cleaners are connected with the tank body through flanges, each cleaner comprises a water inlet end and a water outlet end, the number of the cleaners is two, and the two water outlet ends extend into the upper cavity and the lower cavity respectively and face the wire mesh demister. Through the arrangement of the cleaner, the wire mesh demister can be quickly cleaned, the time cost and the labor cost required for disassembling the tank body and the wire mesh demister are saved, and the biogas treatment efficiency is effectively improved.

To provide means for preparing semi-carbonized pellets of consistently uniform quality.SOLUTION: A preparation method for semi-carbonized pellets comprises a heating step of heating biomass powder in a reactor to obtain a semi-carbonized material, a washing step of washing the semi-carbonized material with a washing liquid, and a compression molding step of compression-molding the washed semi-carbonized material to obtain semi-carbonized pellets.SELECTED DRAWING: None

The utility model discloses a soy sauce wine cellar bottom water biogas slurry evaporation concentration and crystallization device, which relates to the technical field of wastewater treatment and comprises an evaporation treatment tank body, heat recovery mechanisms are arranged on the side surface and the top of the evaporation treatment tank body, and a rapid evaporation mechanism is arranged at the bottom of the evaporation treatment tank body. The heat recovery mechanism comprises a first extension table and a second extension table, a first hollow plate is fixedly mounted at the top of the first extension table, a heat exchange copper pipe is fixedly connected to the top of the first hollow plate, a condensate water drainage pipe is fixedly connected to the bottom of the first hollow plate, and a second hollow plate is fixedly connected to the top of the heat exchange copper pipe. Steam flows through the inner cavity of the heat exchange copper pipe under the guidance of the flexible air pipe, external cold water flows through the outer wall of the heat exchange copper pipe due to the design of the sealing cover and the water inlet and outlet pipe, the steam can heat the cold water through the heat exchange copper pipe, the heat recovery function is achieved, and the waste rate of energy is reduced.

The invention discloses a biomass boiler fuel adaptability enhanced feeding system and a control method. The biomass boiler fuel adaptability enhanced feeding system comprises a feeding device, a fuel pretreatment module, a multi-parameter detection module, a control unit and an execution mechanism. The feeding device comprises a screw feeder and a vibrating feeder which are arranged in parallel, outlets of the screw feeder and the vibrating feeder are converged into the same blanking channel, a wear-resistant ceramic lining plate is laid on the inner wall of the channel, and a pneumatic arch breaker is mounted at the bottom of the channel. Through a multi-stage pretreatment and intelligent feedback control cooperation mechanism, the adaptability of the complex biomass fuel is remarkably improved. The two-stage pretreatment module effectively breaks caking, screens out overrun particles and adjusts the water content, and the blocking risk is eliminated from the source; multi-parameter real-time detection is combined with a self-adaptive control algorithm, the feeding rate and the air-coal ratio are dynamically optimized, the combustion stability is ensured, and the heat efficiency is remarkably improved; due to the abnormal working condition self-diagnosis function, the manual intervention frequency is reduced, and multi-fuel combustion of multiple components in any proportion is supported.

The invention relates to the technical field of biomass fuel processing, and discloses biomass fuel production and processing equipment, which comprises a granulation box body, a flat die rotationally connected in the granulation box body, a compression roller arranged above the flat die, a rotating assembly mounted at the bottom of the granulation box body and used for driving the flat die to rotate, and a control assembly mounted at the bottom of the granulation box body and used for controlling the compression roller to rotate, the telescopic assembly is mounted on the side wall of the granulating box body and is used for driving the compression roller to move up and down and adjusting the distance between the flat die and the compression roller; and the spacing control system is in communication connection with the control end of the telescopic assembly and is used for accurately controlling the spacing between the flat die and the compression roller. The distance control system obtains raw material characteristics, equipment states and particle quality data in real time, constructs a multi-dimensional evaluation model and dynamically adjusts the distance between the pressing roller and the flat die, the problems that manual adjustment is low in precision and high in machine blockage risk are solved, intelligent and accurate control is achieved, safe operation of equipment is guaranteed, and the particle quality is optimized.

The invention discloses a method for efficiently degrading sludge containing a large amount of microplastics through sodium hydroxide hydrothermal pretreatment. The method comprises the following steps: injecting sodium hydroxide and activated sludge containing micro-plastics into a reaction kettle together, continuing for 30 minutes under the condition of 170 DEG C, taking out the reaction kettle after the reaction is finished, and naturally cooling. The obtained sludge is fed into a sludge anaerobic reactor in a daily feeding form, all the reactors operate in a water bath at 37 DEG C under the stirring condition of 120 rpm, and various pollutant indexes, methane production amount changes and the like in an anaerobic system are monitored every day. The method can effectively improve the degradation efficiency of the sludge containing a large amount of micro-plastics, improve the stability and resource utilization efficiency of the sludge, obviously reduce the content of the micro-plastics in a sludge system and reduce environmental pollution.

The invention relates to a method for enriching anaerobic fermentation acid-producing microbial communities, a flora and application of the flora, belonging to the field of biological fermentation. The method comprises an F1 stage, an F2 stage and an F3 stage, and the organic load of the straw is gradually increased in the three stages until the straw is stably operated in the F3 stage. Wherein the stage F1 is a reactor starting stage, and the solid content and the load are low. After the acid production of the F2 is stable, the straw proportion in the material is increased, the C / N ratio is increased, and the material enters the F3 stage, so that the flora adapts to the straw material with the high C / N ratio. According to the method disclosed by the invention, the microbial flora capable of efficiently producing the SCCAs by utilizing the straw material is obtained. The medium-temperature flora and the high-temperature flora can generate SCCAs close to 20 g / L by utilizing the straw with the initial solid content of 5%, and the method has a good application prospect.

The invention provides a biomass fuel particle preparation device and a biomass fuel particle preparation method, and belongs to the technical field of granulators. The device for preparing the biomass fuel particles comprises a support, a plurality of supporting rods and a plurality of supporting rods, the fixed shell is fixedly connected to the mounting seat; the driving shaft is rotationally connected to the mounting base, and the driving shaft penetrates through the fixing shell and is rotationally connected with the fixing shell; the mounting shaft is detachably connected to the driving shaft, and the mounting shaft is rotationally connected with two grinding rollers which are distributed in a central symmetry manner; and the millstone is arranged on the driving shaft, and the millstone is in sealed sliding connection with the fixed shell. The position of the millstone is changed, the distance between the millstone and the grinding roller on the mounting shaft is increased, the local pressure between the millstone and the grinding roller on the mounting shaft is reduced, a redistribution space is provided for materials between the millstone and the grinding roller, the clamped materials can enter a grinding area again, shutdown treatment is not needed any more, and the overall working efficiency is improved.