3378 results about "Pulp and paper industry" patented technology

The invention relates to the technical field of packaging, in particular to an intelligent metering method for remnant base paper rolls of a corrugated paper board assembly line. The intelligent metering method for the remnant base paper rolls of the corrugated paper board assembly line comprises steps as follows: a plurality of base paper feeding positions are arranged in the conveying direction of the assembly line at intervals, a base paper feeding frame is arranged in each base paper feeding position, and two base paper feeding rolls located on two sides of each base paper feeding frame are arranged on the base paper feeding frame; each base paper feeding roll is provided with lap recording sensors and incremental encoders, the lap recording sensors are used for monitoring the number of paper feeding laps of base paper clamped on the corresponding base paper feeding roll, the incremental encoders are used for monitoring the length of each lap after the base paper on the base paper feeding roll passes by one lap, and the lap recording sensors and the incremental encoders are connected with a controller. Intelligent metering can be realized, the operation cost of an enterprise is reduced, labor is saved, and the utilization rate of enterprise resources is increased.

The invention relates to a high-utilization-rate RAP asphalt regenerant and a preparation method thereof. The regenerant comprises the following components in percentage by mass: 30%-50% of a petroleum-based softener, 10%-20% of biomass oil, 5%-15% of a polymer modifier, 1%-5% of a surfactant, 0.5%-2% of an antioxidant and 2%-10% of a functional additive. All the components have a synergistic effect, so that the asphalt modifier can effectively permeate aged asphalt, supplement light oil, reduce viscosity, recover flexibility and remarkably improve high-temperature rut resistance and low-temperature crack resistance of regenerated asphalt. By reasonably selecting the raw materials and proportioning, the production cost is reduced, the RAP utilization rate is improved, and the environment-friendly raw materials are adopted, so that the requirements of environmental regulations are met. The result of the embodiment shows that after the regenerant is added, the performance recovery of the aged asphalt is good, the viscosity of the regenerated asphalt mixture is moderate, the needle penetration recovery rate is high, the softening point is high, the ductility is large, the comprehensive performance is excellent, and the regenerant is superior to commercially available products.

The invention discloses a wastewater degradation and recovery device for white spirit production, and particularly relates to the technical field of wastewater degradation, the wastewater degradation and recovery device comprises a treatment tank and an impurity storage box arranged on one side of the surface of the treatment tank and used for collecting impurities after wastewater treatment, and the other side of the treatment tank is further provided with an input and output assembly; sealing plates for isolating wastewater are arranged on the upper side and the lower side of an inner cavity of the treatment tank respectively, a sealing column is arranged on the opposite surfaces of the two sealing plates, a liquid storage tank is arranged on one side of the sealing plate located on the upper portion, and an air injection stirring assembly is arranged at the bottom of the sealing column. According to the wastewater degradation and recovery device for white spirit production, the mode that large bubbles are directly injected and scattered by a rotary stirring rod to form small bubbles is achieved through the arranged air injection stirring assembly, and meanwhile the injection mechanism is matched for synchronous operation, so that a flocculating agent is rapidly dispersed by means of bubble kinetic energy and the stirring effect, and the flocculation reaction is accelerated; the pollutants can be more quickly coagulated into large-particle flocs, and the wastewater purification efficiency is improved.

The invention discloses a continuous turning and discharging compost fermentation device and a treatment method thereof, and belongs to the technical field of compost ferment.The continuous turning and discharging compost fermentation device comprises a compost fermentation tank, and a compost feeding mechanism, a fermentation assisting mechanism and a continuous collecting mechanism are sequentially arranged on the compost fermentation tank from top to bottom. Through cooperation of the feeding hopper and the collecting hopper, a continuous feeding and discharging mechanism is constructed, and after being covered by bacterial powder in the dust box, an input new material is mixed with a semi-cured material to form a strain relay transmission mode, so that the operation efficiency of the compost fermentation tank is effectively improved, the material turning and discharging continuity of the compost fermentation tank is improved, and the labor intensity of workers is reduced. And external air introduced through the ventilation window can reduce the temperature gradient of the semi-finished fertilizer and preheat the newly fed material by using the waste heat of the pile body, so that the overall energy consumption of the device is reduced, the inactivation of mesophilic flora due to local overheating is avoided, and the activity of the fermentation bacterial colony in the fermentation process is remarkably improved.

The invention discloses a method for preparing high-quality dissolving pulp from low-grade plant fiber raw materials, and belongs to the technical field of biomass pulping. The preparation method comprises the following steps: screening a low-grade plant fiber raw material to obtain a fiber raw material of which the length is 20-30 mm, the width is 10-15 mm and the thickness is 3-5 mm; carrying out deep prehydrolysis-sulfate cooking treatment on the screened fiber raw materials to obtain unbleached sulfate pulp fibers; performing deep eutectic solvent and elemental chlorine-free bleaching treatment on the unbleached sulfate pulp fiber to obtain paper pulp fiber with low kappa number; and carrying out biological enzyme treatment on the paper pulp fibers with low kappa number to obtain the high-quality dissolving pulp. According to the method, the morphology and the structure of chemical pulp fibers are effectively regulated and controlled by designing deep eutectic solvent treatment, and deep dissolution of residual hemicelluloses and lignin is achieved; through biological enzyme treatment, the alpha-cellulose content and the Fock reaction performance are further improved, and finally the high-quality dissolving pulp is prepared.

The invention discloses a continuous bamboo fiber preparation method, and belongs to the technical field of bamboo fiber preparation. The blasted bamboo wood is subjected to enzymolysis; the bamboo wood subjected to enzymolysis is conveyed into a separator to be continuously separated, and fiber bundles are obtained; preparing a fiber suspension from the fiber bundles, and screening to obtain purified fiber bundles; the purified fiber bundles are drafted; freezing the drafted fiber bundles, then unfreezing the fiber bundles, and then drying the fiber bundles to obtain the continuous bamboo fibers. By adopting the continuous bamboo fiber preparation method disclosed by the invention, the bamboo fibers with excellent performance, high purity and good uniformity can be prepared, the problems of poor fiber quality, insufficient stability and the like existing in a traditional method are effectively solved, the production efficiency can be improved, the environmental pollution and energy consumption are reduced, the production cost is reduced, and the method is suitable for industrial production. And high performance, continuity and green economy are considered.

The invention belongs to the technical field of wastewater treatment and energy recovery, and provides a regulation and control method for promoting anaerobic acid production by taking soybean molasses as a substrate through cooperation of ferroferric oxide and bamboo charcoal. Soybean molasses is used as a substrate carbon source, anaerobic activated sludge is inoculated in a medium-temperature SBR reactor, the volume ratio of reactor inflow sewage to sludge is 2: 1, ferroferric oxide and bamboo charcoal composite conductive particles which are subjected to ball milling treatment and have the concentration of 1 g / L are added to promote an anaerobic fermentation system to produce acid, and then anaerobic fermentation is carried out. The mass ratio of ferroferric oxide to bamboo charcoal in the ferroferric oxide and bamboo charcoal composite conductive particles is (1: 2)-(2: 1); monitoring the acid yield, the pH value change and the product type; and the variety and concentration of the acid-producing substance are analyzed, and the interaction of all the components in the reaction process is evaluated. The acid production rate and the total acid production amount in the anaerobic acid production process are obviously improved. And the activity of anaerobic flora is promoted. The variety distribution of acid-producing substances is obviously optimized, and the stability of the acidification process is improved.

The application discloses a method for improving the quality and moisture content distribution of bean curd by soaking and using water for pulp grinding, and comprises the following steps: (1) pretreatment: accurately weighing CaCl2, MgCl2, KCl and cellulase according to different proportions, dissolving in deionized water, and preparing for use; (2) adjusting pH value: taking sodium bicarbonate, dissolving in the prepared deionized water, and adjusting the pH value; (3) raw material preparation: weighing 500g of yellow beans, pouring into the prepared deionized water in step (2), and soaking for about 8-10h; (4) bean curd preparation: preparing the bean curd product rich in various ions according to the process flow by using the soaked yellow beans. The application has the advantages of simple process, low production cost and suitability for industrial production, and solves the problem that the quality of bean products is different due to different water qualities in different regions for yellow bean processing enterprises.

The invention relates to the technical field of wastewater treatment, and provides a treatment method of glycine production wastewater. The treatment method of glycine production wastewater comprises the following steps: (1) rectifying glycine wastewater to recover methanol, adding dilute sulphuric acid to adjust the pH value to 2.5-3.0, stirring, and standing; (2) transferring the supernate into another container, adding a ZIF-8 modified material, stirring, standing, filtering, collecting filter residues and filtrate, washing the filter residues with diethyl ether, and recovering urotropine; and (3) evaporating and concentrating the filtrate under the vacuum condition of-0.08 MPa and the temperature of 50-60 DEG C, and separating out high-purity ammonium chloride crystals. According to the treatment method for the glycine production wastewater, the problem that an existing treatment method is poor in removal effect on urotropin in the glycine production wastewater is solved; and the treated glycine production wastewater reaches the discharge standard.

The invention discloses a textile drying device for textile processing, and relates to the technical field of textile drying. The device comprises a supporting frame, and a first frame body and a second frame body which are matched for use are fixedly mounted at the top end of the supporting frame; through cooperative use of the water removal mechanism and the treatment mechanism, a first extrusion roller and a second extrusion roller can be driven to synchronously rotate reversely, so that wastewater adsorbed in the to-be-dried textile can be extruded and discharged; in addition, external cold air can be continuously sucked into the second frame body after being filtered, the sucked air is heated and then guided to the to-be-dried textile subjected to extrusion and drainage, then the textile subjected to extrusion and drainage can be rapidly dried, and therefore the drying efficiency of the textile is effectively improved. And the continuously sucked external cold air can cool the dried textile, so that the phenomenon that the textile is damaged due to heat accumulation caused by overheating and winding of the dried textile can be avoided.

The invention discloses a passion fruit pulp separation system and method, and belongs to the technical field of agricultural product processing. The system aims to solve the technical problems of incomplete separation of pulp and peel, more pulp residues, low yield, low efficiency and the like in the traditional modes of manual digging, mechanical scraping or hydraulic impact and the like. Comprising a discharging channel through which passion fruits pass one by one; the puncturing and stirring unit is arranged on the side of the discharging channel and comprises a puncturing rod piece, a stirring part arranged on the puncturing rod piece in a sleeving mode, a vibration mechanism for driving the puncturing rod piece to generate high-frequency micro vibration, a rotating mechanism for driving the puncturing rod piece to rotate and a puncturing movement mechanism for driving the whole puncturing rod piece to do linear reciprocating motion. The stirring part is configured to be radially expanded into an expanded structure from a folded state under the action of centrifugal force; and a cutting unit disposed downstream. The system is mainly used for realizing efficient and automatic separation of passion fruit pulp, remarkably improves the pulp yield and the seed integrity rate, and is suitable for deep processing processes such as subsequent pulp freeze-drying.

The invention provides a preparation method of lignin sulfonate and application of the lignin sulfonate in water retention and flocculation, and relates to the technical field of utilization of camellia oleifera shells, the lignin sulfonate prepared through the method can be used for preparing a water-retaining agent and a flocculating agent, the obtained water-retaining agent has high water absorption, the obtained flocculating agent has the ethyl violet removal capacity, and in addition, the lignin sulfonate can be used for water retention and flocculation. When the sulfonated lignin is used for preparing the water-retaining agent and the flocculating agent, the production cost of the water-retaining agent and the flocculating agent can be reduced, the environmental pollution is reduced, and efficient recovery and cyclic utilization of resources are realized.

The invention discloses a preparation process of a pure plant essential oil disinfectant, and relates to the technical field of disinfectants. The problems that plant essential oil is poor in solubility in a water phase, low in stability and the like are solved. The method specifically comprises the following steps: preparing raw materials; preparing a nano emulsion; preparing a solvent and mixing; constructing a natural stable system to obtain a primary product; filtering and sterilizing; and carrying out sterile filling on the disinfectant finished product. The invention provides a pure plant essential oil disinfectant prepared by dissolving type 1 and 8 melaleuca alternifolia essential oil in water, efficient dispersion is realized through a nano-emulsification and natural stabilization technology so as to form a stable aqueous solution, an amphiphilic structure of soapbark saponin is utilized, aglycone and essential oil terpene form a supramolecular compound, and the stable aqueous solution can be used for sterilizing the melaleuca alternifolia essential oil and the melaleuca alternifolia essential oil and the melaleuca alternifolia essential oil. The technical problems of poor dissolvability and low stability of plant essential oil in a water phase are solved, and the plant essential oil has broad-spectrum antibacterial and antiviral characteristics and can meet the disinfection requirements in multiple fields such as medical treatment, object surface treatment, home furnishing and personal care.

The invention discloses a high-efficiency aerobic fermentation corncob-based biological conditioner and application thereof. Aiming at the common problems of unstable carrier effect, poor environmental adaptability, easiness in inactivation of the microbial inoculum, difficulty in continuously exerting efficacy and the like existing in the existing composting microbial inoculum, the agricultural waste corncob with a porous structure and excellent water-retaining and fertilizer-retaining natural characteristics is pretreated and modified; and the immobilized carrier of the aerobic fermentation inoculant with high activity and high stability is constructed. The carrier matrix can be used for efficiently loading and remarkably improving the expanding culture core aerobic fermentation functional flora to prepare a solid biological conditioner. The corncob-based biological conditioner is applied to the composting process of organic solid wastes, promotes the humification process of organic materials, shortens the composting period, improves the fermentation efficiency of the materials, and effectively improves the resource utilization level of the organic solid wastes.

The invention discloses a process for manufacturing bamboo charcoal fibers from a biomass material, and belongs to the technical field of biomass material processing, the process for manufacturing the bamboo charcoal fibers from the biomass material comprises the following steps: S1, pretreatment of bamboo wood: cutting the bamboo wood, soaking the cut bamboo wood in an alkaline solution with the mass fraction of 3-8%, and cooking to remove lignin; s2, pre-carbonization treatment is conducted, specifically, the bamboo wood is subjected to primary carbonization in an inert gas environment; s3, carrying out segmented carbonization-activation, and carrying out gradient heating in two stages under the nitrogen pressure of 0.2-1.2 MPa; and S4, fiber forming: carrying out melt spinning on the activated bamboo charcoal and the bio-based polymer to obtain the fiber. Through segmented gradient carbonization and activation, bio-based polymer blending and environment-friendly process integration, efficient and green preparation of the bamboo charcoal fibers is achieved, the adsorption performance, the mechanical strength and the degradability are remarkably improved, and meanwhile energy consumption and pollution are reduced.

The invention discloses an efficient treatment process for salt-containing industrial wastewater, and relates to the technical field of wastewater treatment. Salt-containing industrial wastewater sequentially passes through an adjusting tank, a silicon and hardness removal unit, a biochemical unit, a secondary sedimentation tank, a fluorine removal unit, a filter unit, a catalytic ozonation unit, a moving bed bio-membrane reactor treatment unit, a powder carbon sedimentation unit and an ultrafiltration-reverse osmosis double-membrane unit to be treated, produced water is recycled, and concentrated water enters an evaporation and concentration unit; the silicon removal and hardness removal unit is used for treating the wastewater by adding a flocculating agent and a composite coagulant aid; the flocculating agent is a chitosan-based flocculating agent, and the addition amount of the flocculating agent is 10 to 20 mg / L; the composite coagulant aid is composed of a magnesium-aluminum hydrotalcite coagulant aid and alginic acid-silicate hybrid microgel according to the mass ratio of 2: (1-4), and the addition amount of the composite coagulant aid is 5-15 mg / L. The treatment effect of the salt-containing industrial wastewater is remarkably improved.

The invention relates to the technical field of wood-plastic floors, in particular to an anti-corrosion and anti-insect straw wood-plastic floor and a preparation process thereof.The anti-corrosion and anti-insect straw wood-plastic floor comprises a floor body, and the floor body further comprises an upper-layer plate, a middle-layer plate and a lower-layer plate which are sequentially and fixedly connected from top to bottom; the medicine box is mounted at the end part of the connected floor main body; the medicine loading assembly is mounted in the medicine box; the water flow channel is formed between the middle-layer plate and the lower-layer plate, and the end of the water flow channel communicates with a water inlet pipe penetrating through the upper-layer plate to form a water inlet; the medicine flow path is arranged between the upper-layer plate and the middle-layer plate; the water flow driving assembly is mounted in the pesticide box and used for driving water flow to pass through the pesticide loading assembly; according to the device, through the arrangement of the water flow driving assembly and the pesticide flow path, insect prevention protection on the floor is achieved, pesticide can remain in the pesticide flow path, the onset time of the pesticide can be prolonged, and therefore the insect prevention time efficiency of the floor is enhanced.

The invention discloses a method and a system for efficiently producing short-chain fatty acid by utilizing waste molasses in the sugar industry and municipal sludge through synergistic anaerobic fermentation, and belongs to the technical field of organic solid waste recycling. Waste molasses and municipal sludge are mixed according to a specific ratio, the carbon-nitrogen ratio is optimized to 20-30: 1, trace metal catalysts (Fe < 2 + >, Co < 2 + > and Ni < 2 + >) are added, and two-stage pH regulation (the initial pH is 6.0-7.0, and the later pH is 5.5-6.0) and a medium-temperature (35-37 DEG C) anaerobic fermentation process are combined, so that the yield of short-chain fatty acid is remarkably increased to 5.2-6.8 g COD / L and is increased by 200-300% compared with that of traditional sludge single-substrate fermentation. The method realizes recycling and high-value conversion of the organic solid waste, and has the characteristics of low cost, high acid production efficiency and environmental friendliness.

The invention provides a coconut coir processing technology. The coconut coir processing technology comprises the following steps: S1, crushing coconut shells; s2, coconut shell fiber shredding; s3, mixing and water treatment; s4, draining and desalting; and S5, compacting and forming. According to the method disclosed by the invention, mechanical cold pressing is integrated with desalting, dehydrating and compressing steps, so that the desalting and dehydrating efficiency can be remarkably improved, thermal damage and oxidative deterioration of a traditional process are avoided, and the fiber performance is reserved, thereby better maintaining the water absorption and elasticity of a coconut coir product, reducing the volume loss rate during transportation and improving the quality of the coconut coir product. And the low salinity, low EC value, high water absorption and high elasticity are all beneficial to the development of the root system of the plant.

The invention relates to the field of demulsifiers, in particular to an oil sludge demulsifier as well as a preparation method and application thereof. The oil sludge demulsifier comprises the following components in parts by mass: 20-35 parts of a surface active compound, 7-12 parts of a sodium alkyl sulfate cosolvent, 0.6-1.8 parts of a stabilizer and 48-55 parts of water, wherein the surface active compound comprises hyperbranched polyamidoamine and polyether amine modified magnetic nanoparticles. According to the oil sludge demulsifier, the problems that most of existing demulsifiers are small in dehydration amount, low in dehydration speed, poor in demulsification effect and low in treated oil content are solved, the demulsification performance of the oil sludge demulsifier is improved, the demulsification and dehydration efficiency is improved, and effective separation of oil sludge is achieved.

The invention discloses a method for detecting the content of chlorophenol substances in a bamboo material and a product for food contact, and belongs to the technical field of detection. The method specifically comprises the steps of standard liquid preparation, sample treatment and sample testing. According to the method, a content and migration quantity pretreatment mode without derivatization treatment is adopted, and an ultra-high performance liquid chromatography-tandem mass spectrometry detection technology is matched, so that the method for testing the content of the chlorophenol substances in the bamboo and wood materials and products for food contact, which is simple in pretreatment process, accurate in test, efficient, rapid, high in sensitivity and high in practicability, is realized.

The invention relates to the technical field of water pollution treatment, in particular to a poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function. Comprising a cover body rotationally connected to a tank body, the tank body is provided with a liquid injection pipe communicated with the interior of the tank body, an inner cylinder is fixedly connected in the tank body, the inner cylinder is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a threaded rod, the threaded rod is in threaded connection with a filter plate, and a plurality of through holes are formed in the filter plate. The filter plate is slidably connected with a dredging plate, and the dredging plate is provided with dredging parts with the same number as the through holes. According to the device, fibers are blocked on the upper side of the filter plate through the filter plate, and a flocculant is injected into the lower side of the filter plate, so that the probability that the flocculant is blocked by the fibers in the process of injecting the flocculant into wastewater and reacting with the wastewater is reduced, the influence of the fibers on the flocculant is reduced while the fibers are collected, and the flocculation reaction efficiency of the wastewater is further improved.

The invention discloses a microbial fermentation pretreatment system based on straw treatment, and particularly relates to the technical field of microbial diagnosis degradation, the microbial fermentation pretreatment system comprises a straw recovery pretreatment module used for straw recovery to obtain pretreated straw; the fermentation reaction module is used for performing microbial strain inoculation on the pretreated straws; the multi-parameter detection module is used for measuring characteristic parameters of the fermentation process in the tank in real time; the parameter processing optimization module is used for calculating fermentation efficiency scores of the characteristic parameters and generating pre-processing parameter optimization values; and the closed-loop control module is used for carrying out pretreatment regulation and control according to the parameter optimization value. The microbial fermentation pretreatment system based on straw treatment is constructed through the straw recovery pretreatment module, the fermentation reaction module, the multi-parameter detection module, the parameter treatment optimization module and the closed-loop control module, and the problems that fermentation parameter regulation is lagged, the degradation conversion efficiency is insufficient, the fermentation process is unstable and the operation cost is high are solved.

The utility model discloses a straw mushroom base material aerobic fermentation device which comprises a controller, a temperature and humidity sensor, an ammonia gas detection sensor, a high-temperature steam generator, a combined ventilator, an exhaust fan, an aerobic fermentation chamber, a plurality of goods shelves, a stainless steel humidification pipe and an air return pipe. A plurality of containing frames used for containing straw mushroom base materials are arranged in the goods shelf, the stainless steel humidifying pipe is arranged on the bottom wall of the fermentation space and penetrates through the aerobic fermentation chamber to be communicated with the high-temperature steam generator, so that the high-temperature steam generator provides temperature and humidity for the fermentation space, and the air return pipe is arranged on the top wall of the fermentation space. According to the mode, an indoor fermentation mode is adopted for the straw mushroom base material, so that a stable fermentation environment can be provided for the straw mushroom base material, the straw mushroom base material is fully fermented, and the planting yield of straw mushrooms is effectively increased.

The invention discloses a knitwear and textile dyeing wastewater treatment device, and belongs to the technical field of textile wastewater treatment, the knitwear and textile dyeing wastewater treatment device comprises: a pretreatment mechanism, which comprises a screen frame, a first screen and a second screen, and two sides of the screen frame are both provided with a transmission mechanism and a guide mechanism; the treatment box is arranged at the top of the screen frame and is provided with a driving mechanism, and a stirring mechanism and an electro-catalytic reaction mechanism are arranged in the treatment box; and the salt separation mechanism comprises a booster pump and a nanofiltration membrane. Efficient purification is achieved through cooperative processing, firstly, a dynamic vibration screening system is adopted, a pressure sensor monitors the load of a screen in real time, the rotating speed of a driving motor is intelligently adjusted, an eccentric balance weight and guide rail linkage mechanism is matched, periodic lifting actions are overlaid in vibration, screen holes are effectively prevented from being blocked, and the filtering uniformity is improved; organic matters in the wastewater are decomposed through the electro-catalysis reaction mechanism, multivalent salt ions in the wastewater are separated through the salt separation mechanism, and sufficient purification of the wastewater is achieved.

The invention provides an alginate fiber sanitary towel and a preparation method thereof, and belongs to the technical field of nursing materials. Through the directional water-repellent design of the double-sided reverse osmosis prevention functional layer and in combination with the three-dimensional leakage-proof partition edge structure, the risks of liquid back seepage and side leakage are remarkably reduced, and the use dryness and reliability are improved; the natural antibacterial effect of the alginate fibers is utilized, efficient peculiar smell control is achieved, irritation of traditional chemical bacteriostatic agents to the skin is avoided, and biological safety is guaranteed; the core material adopts alginate fiber renewable resources, the characteristics of high water absorption and degradability of the alginate fiber absorber are combined, the environmental protection sustainability of the product is enhanced, the common problems of reverse osmosis, side leakage, dependence on chemical addition and the like of the sanitary towel are solved, meanwhile, the unification of the protection performance, the health attribute and the sustainability is achieved through material and structure innovation, and the sanitary towel is suitable for being used for sanitary napkins. And a technical normal form capable of being flexibly expanded is provided for the industry.

The present invention discloses a system for retaining a piece of wood onto a saw mill in an orientation at an angle to the horizontal, such that horizontal cuts made to the wood result in shorter planks with full exposure of wood end grain, and further, a system for rotating a piece of wood on a saw mill in order to create lumber with specific polygonal cross sections; and methods for producing lumber from pieces of wood using said systems.

The utility model discloses a tobacco stem winnowing machine, and belongs to the field of tobacco processing. The cut tobacco stem winnowing machine comprises a winnowing machine, a winnowing air supply device, a caked cut tobacco loosening device, a cut tobacco output mechanism, a stem discharging device and the like. According to the tobacco stem winnowing machine, more than two layers of air separation can be carried out in one sorting box, stems in tobacco shreds can be finely separated, and therefore the content of the stems in the tobacco shreds is reduced. Due to the fact that only one winnowing box is used for processing, the loss of water in the tobacco shreds is relatively small, and the generated tobacco shred breakage is small. The tobacco stem winnowing machine is specially designed and manufactured for separating stems in tobacco shreds, and is simple and reliable in structure, convenient to operate and use and good in winnowing effect.

The invention belongs to the technical field of microbial fermentation and biological agriculture, and discloses a rice straw decomposition agent as well as a preparation method and application thereof. The rice straw decomposition agent is obtained by adopting bacillus megatherium (Bacillus megatherium) Z101 to be subjected to fermentation culture after activation of the bacillus megatherium Z101. The application method comprises the steps that harvested rice straw is flatly laid in a rice field, the water level of the rice field is kept to submerge the rice straw, then the rice straw decomposition agent is diluted with water and then sprayed to the surface of the laid rice straw for decomposition fermentation treatment, and decomposed rice straw is obtained. The rice straw decomposing inoculant is a fermentation culture solution of bacillus megatherium Z101, and compared with a fermentation culture solution obtained by conventional bacillus megatherium in the market, the rice straw decomposing inoculant has higher rice straw decomposing efficiency and speed, in-situ decomposing and field returning of rice straw are facilitated, and a new application way is provided for the bacillus megatherium Z101.

The invention discloses a method for preparing phenol by utilizing a biomass raw material, which comprises the following steps: 1) crushing biomass, adding the crushed biomass into a caustic alkali solution to carry out hemicellulose removal treatment, and carrying out solid-liquid separation to take a solid substance, so as to obtain hemicellulose-removed biomass; 2) adding the hemicellulose-removed biomass into an ethylene glycol-ferric chloride eutectic solvent for lignin extraction, then adding an acetone-water mixed solution, then carrying out solid-liquid separation, taking a liquid substance, adding water to precipitate the lignin, then carrying out solid-liquid separation, and taking a solid substance to obtain the lignin; and 3) pyrolyzing the lignin in a protective atmosphere to obtain lignin oil containing phenol. The method for preparing phenol from biomass raw materials has the advantages of simple operation, high phenol yield, high product purity, low energy consumption, safety, environmental protection and the like, and is suitable for large-scale industrial application.