109results about How to "High nitrogen content" patented technology

The remediation method for the moderately and severely cadmium-polluted rice field aims at strictly controlled cadmium-polluted rice fields, and is divided into two stages of strict control and safe utilization for remediation. In the strict management and control stage, an activating agent is applied to the soil in spring, then microalgae are inoculated, cadmium-enriched plants are planted, the plants are collected after being full of the microalgae, the plants are harvested when the plants grow to the enrichment extreme value, stubbles are reserved for growth, and the steps are repeated till winter; applying an activating agent in winter, planting green manure, and harvesting in spring in the next year; the process is cyclically carried out until the cadmium content of the soil is reduced to a safe utilization level. Entering a safe utilization stage, applying an activating agent in spring, inoculating nitrogen-fixing cyanobacteria, collecting the cyanobacteria after the cyanobacteria overgrow, and repeating the steps until the rice seedlings are transplanted; applying nitrogen-fixing blue-green algae, and planting rice; applying an activating agent after rice harvesting, planting winter green manure, and harvesting in next spring; the process is cyclically carried out until the cadmium content of the soil is reduced to a preferential protection level. The method is low in cost, high in remediation efficiency and good in effect, and a new way is provided for cadmium-polluted rice field remediation.

The invention discloses a method for preparing anisotropic samarium-iron-nitrogen magnetic powder, and belongs to the technical field of magnetic materials, the method comprises the following steps: preparing Sm and Fe according to design components, and smelting to obtain samarium-iron alloy molten steel; casting the samarium-iron alloy molten steel onto a cooling roller to obtain an iron-samarium alloy sheet; the iron-samarium alloy sheet is placed in a vacuum heat treatment furnace to be subjected to homogenization treatment, the alloy sheet obtained after homogenization treatment is cooled to 200-300 DEG C, in the vacuum environment, hydrogen is introduced into the furnace, the absolute pressure of the hydrogen is controlled to be 0.05-0.1 MPa, and hydrogenation treatment is conducted for 2 h; after hydrogenation is completed, the temperature is increased to 400 DEG C, nitrogen is introduced to 0.5 MPa, the temperature is increased to 530 DEG C, then the furnace temperature is reduced to the room temperature, and the anisotropic samarium-iron-nitrogen magnetic powder is obtained.The preparation method of the samarium-iron-nitrogen magnetic powder has the advantages of being simple in preparation process, low in energy consumption, high in production efficiency, small in magnetic powder particle size, high in magnetic performance and good in magnetocrystalline anisotropy.

The invention provides a method for preparing a nitrogen-rich liquid fertilizer and a soil conditioner from agricultural biomass wastes, and belongs to the technical field of humic acid synthesis. According to the agricultural biomass waste treatment method, nano-bubble nitrogen sources are coupled with agricultural biomass waste for a hydrothermal reaction, and the nitrogen sources in the method serve as additives to provide nitrogen elements to improve the quality of humic acid and serve as catalysts to improve the yield; by adopting a nano bubble solution system, the contact area of a nitrogen source, agricultural biomass waste and water is increased, and the yield and quality of a product are improved. According to the method disclosed by the invention, the quality and yield of humic acid and hydrothermal carbon are improved, the content of nutrient elements such as nitrogen element in the product is increased, the problems of low nitrogen fertilizer utilization rate, single returning nutrient of fulvic acid, humic acid or hydrothermal carbon and the like are solved, and a new thought is provided for resource utilization of agricultural biomass wastes such as straws and the like.

The invention belongs to the technical field of biological fertilizers, and particularly provides a carbon sequestration and nitrogen conservation biological organic fertilizer and a preparation method thereof.Molybdenum, copper, cobalt and composite flora are loaded on biomass charcoal to prepare load type biomass charcoal; and jointly preparing the supported biomass charcoal, the perilla biomass extracting solution and animal waste into the biological organic fertilizer. According to the biological organic fertilizer provided by the invention, unnecessary waste of strain resources can be avoided, and the organic fertilizer can remarkably promote the immobilization effect of soil on ammonium nitrogen and nitrate nitrogen; the compound bacteria liquid promotes decomposition of organic matters and effectiveness of nutrients, and promotes improvement of soil, so that improvement of soil productivity is facilitated; meanwhile, the organic fertilizer can obviously improve the enzyme activity of the soil and promote the improvement of the fertility of the soil, so that the effect of conditioning the soil is finally realized.

The invention relates to the technical field of preparation of catalysts, and particularly discloses a preparation method and application of a nitrogen-doped porous carbon supported metal catalyst. Tetra (4-pyridyl) porphyrin, a tetra (4-pyridyl) porphyrin M (Ru, Ir or Pd) complex and polybrominated methyl benzene are evenly mixed according to a certain proportion, and then the mixture is added into a nitrogen-doped porous carbon supported metal catalyst. Heating and polymerizing at 70-150 DEG C to form a porous ionic polymer; after the obtained porous ionic polymer adsorbs a certain amount of saturated urea solution, performing vacuum drying to obtain a porous ionic polymer / urea solid mixture; and heating the obtained porous ionic polymer / urea solid mixture to 550-1000 DEG C under the protection of inert gas for pyrolysis to obtain the nitrogen-doped porous carbon supported metal catalyst. The nitrogen-doped porous carbon supported metal catalyst has the advantages of large specific surface area, adjustable metal loading capacity and metal atom spacing, clear active center structure and the like, and shows excellent catalytic performance and recycling performance in catalysis of N-formylation reaction of amine and CO2.

The present invention discloses a nitrogen-doped porous graphene and a preparation method and application thereof. The preparation method comprises the following steps: uniformly dispersing graphene oxide aerogel, a nitrogen-containing precursor and an activator in deionized water, followed by drying and high-temperature calcination to obtain nitrogen-doped porous graphene; wherein the nitrogen-containing precursor is selected from at least one of urea, melamine and ammonium hydroxide; and the activator is selected from at least one of KFeO4 and KOH. The present invention uses KOH and KFeO4 as activators, and urea, melamine and ammonium hydroxide as nitrogen sources to simply and efficiently prepare nitrogen-doped porous graphene. The obtained nitrogen-doped porous graphene has a large specific surface area, developed pores and a high nitrogen content. When applied to the catalytic reduction of aromatic nitro compounds, its catalytic activity is far superior to the catalysts reported in the literature, including metal catalysts and carbon-based metal-free catalysts. It can efficiently reduce aromatic nitro compounds in aqueous solution under mild conditions, and also has the advantages of low cost and environmental friendliness.

The invention discloses a biological conditioner for improving coastal salinized soil and promoting crop growth and application, and belongs to the technical field of soil improvement and crop cultivation. The biological conditioner is prepared from micromolecular organic carbon, polyglutamic acid, azotobacter chroococcum BNCC192292 and bacillus amyloliquefaciens, and the compounding ratio of the micromolecular organic carbon to the polyglutamic acid to the azotobacter chroococcum BNCC192292 to the bacillus amyloliquefaciens is 1: 1. The raw materials of the biological conditioner are reasonably compounded, and each raw material has specific functions: the micromolecular organic carbon and the polyglutamic acid not only do not increase the salt content of soil, but also can effectively increase the organic matter content and the total nitrogen content of the soil, and are organic carriers for good survival of effective bacteria; azotobacter chroococcum and bacillus amyloliquefaciens can increase the total nitrogen content of soil and increase the crop yield. The whole biological conditioner not only can remarkably reduce the salt content of soil, promote crop germination, improve the microbial activity of soil and increase the crop yield, but also has the advantages of being sufficient in raw materials, low in cost, easy to implement, green, environmentally friendly and the like.

According to the plug-in type low-temperature plasma array soil nitrogen fixation device, a plurality of low-temperature plasma reactors are inserted into soil in an array mode, a plurality of through holes are evenly distributed in the surface of a stainless steel pipe, the bottom of the stainless steel pipe is a circular truncated cone, and an opening is formed in the bottom of the stainless steel pipe; the stainless steel pipe is fixed at the lower end of the connecting firmware, the air pipe is arranged on the side edge of the connecting firmware, and the stainless steel electrode is fixed at the upper end of the connecting firmware; the metal electrode is arranged in the stainless steel tube as a high-voltage electrode and is fixed by the connecting firmware; the quartz tube is arranged in the stainless steel tube and sleeves the outer surface of the metal electrode to serve as a barrier medium; the power supply is connected with metal electrodes and stainless steel tubes; the air source is connected with the air pipe.

The invention belongs to the technical field of silicon steel materials, and discloses an ultrahigh-magnetic-induction oriented silicon steel strip for a low-frequency transformer and a preparation method of the ultrahigh-magnetic-induction oriented silicon steel strip. A casting blank is subjected to hot rolling, primary cold rolling, decarburization annealing, nitriding, secondary cold rolling, magnesium oxide coating and annealing; a casting blank is prepared from the following components in percentage by mass: 0.02 percent to 0.065 percent of C, 2.7 percent to 3.7 percent of Si, 0.04 percent to 1.1 percent of Mn, 0.002 percent to 0.01 percent of S, 0.015 percent to 0.025 percent of N, 0.030 percent to 0.040 percent of Als and 0.01 percent to 0.3 percent of Cu. According to the method, aluminum nitride is used as an inhibitor, the inhibitor is formed by nitriding an initial alloy component, the sum of the nitrogen content and the nitriding amount in the initial component is about 500 ppm, and the obtained ultrahigh-magnetic-induction oriented silicon steel strip without the island crystal structure and with B800 larger than or equal to 1.95 T is suitable for machining of a 50 / 3 Hz low-frequency transformer iron core.

The invention belongs to the field of monatomic materials, and particularly relates to a carbon material rich in nitrogen and monatomic zinc and application of the carbon material in catalytic activation of carbon dioxide, the content of nitrogen in the carbon material is 16.1 wt%-21.6 wt%, the monatomic zinc is distributed in the carbon material in a monatomic state, and the content of the monatomic zinc in the carbon material is 10.3 wt%-18.7 wt%. The high zinc loading capacity and nitrogen content can increase the catalytic active site density, optimize the electronic structure, and significantly improve the activity of the carbon material rich in nitrogen and monatomic zinc in catalyzing the activation of carbon dioxide.

The invention discloses a preparation method of a 700MPa-grade ultra-fine grain aseismic steel bar with ultra-high strength. The 700 MPa grade ultra-high strength ultra-fine grain aseismic steel bar is prepared from the following chemical components in percentage by weight: 0.27 to 0.29 weight percent of C, 0.70 to 0.80 weight percent of Si, 0.60 to 0.70 weight percent of Mn, 1.05 to 1.15 weight percent of Cr, 0.165 to 0.180 weight percent of V, 0.012 to 0.016 weight percent of Nb, less than or equal to 0.030 weight percent of S, less than or equal to 0.030 weight percent of P, less than or equal to 0.0040 weight percent of O, 0.0300 to 0.0350 weight percent of N and the balance of Fe and inevitable impurities. The yield strength of the steel is 710-745 MPa, the tensile strength of the steel is 895-950 MPa, the maximum force total elongation of the steel is larger than or equal to 10.0, and the ferrite grain size of the steel is 12.5-14.0. According to the process, chemical component design, converter smelting, deoxidation alloying, argon station treatment, LF furnace refining, continuous casting, a steel rolling heating schedule, rolling temperature and a controlled cooling process are integrated and innovated, so that multiple strengthening effects of precipitation strengthening, fine grain strengthening, structure strengthening and the like are fully exerted; the produced reinforcing steel bar has the advantages of excellent and stable high-strength performance, fine and uniform microscopic structure, excellent corrosion resistance, excellent anti-seismic performance and the like, and has remarkable economic and social benefits.

The present invention provides a high-quality high-carbon steel wire and a method for smelting all scrap steel thereof, and belongs to the technical field of steelmaking. The present invention systematically optimizes the all-scrap steel electric furnace smelting process, and reduces the amount of harmful elements such as nickel, chromium, copper, arsenic and molybdenum introduced by improving the type, size and matching method of the scrap steel entering the furnace in terms of raw materials. At the same time, in order to control the problem of difficult-to-control nitrogen content in steel caused by long-term power-on of all-scrap steel smelting in the electric furnace, a low-nitrogen carburizer is added to the scrap steel entering the furnace to increase the carbon content of the molten pool during electric furnace smelting, and at the same time, the furnace wall gun oxygen supply and carbon powder spraying process are optimized to improve the foam slag effect and reduce the nitrogen absorption of molten steel. A precise continuous casting and rolling control method is adopted to obtain highly homogenized ingots and high-quality wire rods, providing high-purity parent materials for high-end wire products. The present invention is used to produce high-cleanliness and high-homogenization wire products, and reduce the carbon emission level of the entire smelting process.

The invention discloses a granulated fermentation fertilizer and a production process and application thereof, belonging to the technical field of fermentation fertilizers. Chicken manure and crushed straw are uniformly mixed, a primary fermentation bacterial agent and a nitrogen retaining adsorbent are added, the mixture is added into a horizontal fermentation tank and stirred and mixed, the water content is adjusted to 50-55%, the mixture is fermented at 65±5°C for 15 days, and the mixture is stirred every 3-4 days to obtain a primary fermentation fertilizer; the primary fermentation fertilizer and a secondary fermentation bacterial agent are stirred and mixed according to a mass ratio of 10:0.3, the water content is adjusted to 45-50%, the mixture is fermented at 45±5°C for 5 days, and the mixture is stirred every 3-4 days to obtain a secondary fermentation fertilizer, and disc granulation is performed to complete the production process of the granulated fermentation fertilizer; the nitrogen retaining adsorbent is added during the primary fermentation process, so as to reduce the loss of nitrogen during the fermentation process of the organic fertilizer and improve the nitrogen content of the organic fertilizer; and field test results show that the nitrogen retaining adsorbent added to the granulated fermentation fertilizer can reduce the cadmium content in peanut grains.

The invention relates to the field of sodium ion batteries, in particular to a hard carbon negative electrode material of a fast-charging sodium ion battery and a preparation method of the hard carbon negative electrode material, which are used for solving the problem that the popularization of the sodium ion battery in practical application is limited due to the defects of low capacity and poor cycle performance of the existing hard carbon negative electrode material of the fast-charging sodium ion battery. The nickel-cobalt metal oxide is doped into the nitrogen-containing hard carbon microspheres, so that the conductivity and reaction kinetics of the material can be improved, the theoretical capacity of the material is further improved, the charge-discharge rate of the sodium-ion battery can be remarkably improved, and the electrochemical performance of the battery is enhanced; and after being coated by the composite gel structure, the composite gel structure can effectively improve the structural stability of the material, reduce the volume change of the material in the cycle process, remarkably improve the cycle stability of the sodium-ion battery, and maintain longer cycle life and higher capacity retention rate while realizing quick charging. The service life of the battery is prolonged.

The application relates to the field of food biotechnology, and discloses a low-salt bean paste production process based on segmented temperature control fermentation, which is made of fava bean koji, water, edible salt, sodium hexametaphosphate, lactococcus lactis nisin, edible alcohol, granulated coarse granular calcium carbonate and glucono-delta-lactone. The production process comprises the following steps: constructing a composite matrix, and first performing buffer-type medium-temperature enzymolysis; then adding a glucono-delta-lactone aqueous solution in a flow manner, utilizing the stoichiometric coupling reaction of the glucono-delta-lactone aqueous solution and the granulated coarse granular calcium carbonate to generate carbon dioxide in situ to construct a micropore structure and regulate the pH value of the system; and finally, connecting a Zygosaccharomyces rouxii to perform low-temperature aroma-producing after-ripening. Through the synergistic effect of the components, the application effectively solves technical problems in the low-salt fermentation process, such as low protein solubility, easy compaction of the matrix and breeding of miscellaneous bacteria, and improves the amino acid nitrogen content and protein hydrolysis rate of the finished product.

The invention belongs to the field of organic waste resource utilization, and particularly relates to a system for reducing ammonia emission in compost and producing a nitrogen-rich organic fertilizer and a use method of the system. Comprising a condenser pipe, a composting reactor main body, a gas flowmeter and an aeration pump, the condensation pipe is communicated with the top of the composting reactor main body; the composting reactor main body is connected with the gas flow meter; the gas flow meter is connected with the aeration pump; the method is low in operation cost, good in ammonia emission reduction effect and suitable for large-scale application, and the nitrogen content in compost products can be remarkably increased.

The application relates to the technical field of functional materials, in particular to nitrogen-doped graphitized carbon microspheres and a preparation method and application thereof. The preparation method provided by the application comprises the following steps: performing carbonization treatment on polymer-based microspheres to prepare polymer-based carbon microspheres; performing activation treatment on the polymer-based carbon microspheres by using an activator to prepare porous carbon microspheres; mixing the porous carbon microspheres, a catalyst, a nitrogen source and a solvent, and performing heat treatment under vacuum conditions to prepare nitrogen-doped carbon microspheres; the catalyst comprises one or more of metal salt catalysts and non-metal oxide catalysts; the temperature of the heat treatment is 90 DEG C-200 DEG C; under a protective atmosphere, the nitrogen-doped carbon microspheres are subjected to graphitization treatment at 900 DEG C-1700 DEG C to prepare nitrogen-doped graphitized carbon microspheres. The preparation method provided by the application has the advantages of low graphitization temperature, low energy consumption and easy large-scale production, and the nitrogen-doped graphitized carbon microspheres prepared by the method have a high nitrogen doping amount.

The invention relates to a P.megatherium capable of improving tobacco leaf quality and a fungicide and application of the P.megatherium capable of improving tobacco leaf quality, the P.megatherium is a P.megatherium SYSUC27 strain, the preservation number is CCTCC NO: M 20251234, and the preservation date is May 30, 2025. A brand-new P.megatherium strain is separated from tobacco leaf raw materials and preserved, the strain has excellent capacity of producing amylase and protease, after the strain is enriched and applied to tobacco leaves for artificial fermentation, the starch content in the tobacco leaves is reduced, the total nitrogen content and the total plant alkaloid content are increased, and the yield of the tobacco leaves is increased. And finally, the aroma quality and the aroma amount of the tobacco leaves can be effectively improved, the sweetness is increased, offensive odor of the tobacco leaves is improved, the irritation is reduced, and the sensory quality of the tobacco leaves is obviously improved.

The invention discloses food fresh-keeping intelligent integrated packaging equipment, and particularly relates to the technical field of food fresh-keeping packaging, the food fresh-keeping intelligent integrated packaging equipment comprises a shell, the shell comprises an inlet and an outlet, the shell further comprises an ejection assembly, a packaging assembly and an inflation assembly, the ejection assembly comprises a first air cylinder arranged in the shell, and a first piston is slidably connected in the first air cylinder; and one end of the first piston is fixedly connected with a first piston rod, the packaging assembly comprises sliding rails arranged on the two opposite sides of the inner wall of the shell, the tops of the sliding rails are jointly in sliding connection with a sliding part, and the inflation assembly is arranged in the shell. A second piston rod extends out to drive a first movable plate to move, meanwhile, a pull rope pulls a connecting rod in a guide wheel, meanwhile, the second movable plate rotates clockwise around a connecting shaft at the hinged position of the second movable plate and the first movable plate, and an acute angle is formed between the second movable plate and the first movable plate; the nitrogen in the preservative film is further close to the sliding part, so that the nitrogen content in the preservative film at the sliding part is increased.

The invention discloses a preparation method of pig brain protein powder, and belongs to the field of biological medicine. The method comprises the steps of pretreatment, homogenization, degreasing, drying, packaging and the like, and by optimizing the proportion of pig brain homogenate to edible alcohol and the number of degreasing times, the total nitrogen content and the yield of protein powder are remarkably increased, the dosage of an organic solvent is reduced, the production time is shortened, the energy consumption and the production cost are reduced, and the production safety is improved. The invention provides a method for preparing high-quality brain protein powder. The prepared brain protein powder can be applied to the fields of foods, medicines and daily chemicals.

The invention relates to the technical field of soil remediation, in particular to a saline-alkali soil ecological remediation method. The ecological restoration method for the saline-alkali soil comprises the following steps: (1) adding a saline-alkali soil modifier into the saline-alkali soil; (2) applying a microbial fertilizer to the saline-alkali soil; (3) applying a mixed microalgae solution to the saline-alkali soil; and (4) carrying out rotation planting on saline-alkali tolerant plants in the treated saline-alkali soil. According to the comprehensive and systematic ecological restoration method for the saline-alkali soil, the saline-alkali soil modifier, the microbial fertilizer and microalgae treatment are organically combined, saline-alkali tolerant crops are planted in the saline-alkali soil in a rotation mode, the restoration effect of the saline-alkali soil can be effectively improved, and a solution is provided for an actual engineering project.

The invention discloses a catalyst for treating industrial organic waste gas, which is characterized in that one or more than two of Fe, Ni, Co, Cu, Zn, Mn, Ce and Nb are combined to prepare a catalyst activating solution, the distribution of active metals on the surface of the catalyst is effectively regulated and controlled, and the pH is regulated and controlled by ion substances containing Na < + >, K < + > and NH4 < + >, so that the pore structure of the catalyst is effectively improved in the roasting process, the nitrogen content of the catalyst is increased, and the catalyst has high catalytic activity. The catalyst activity is effectively improved, and the requirements of facilities for treating waste gases such as CO and RCO can be met.

The invention belongs to the field of metal steel production, and discloses a steel nitrogen-increasing strengthening treatment method. The production process of the steel comprises the steps of steelmaking, steel ladle alloying, continuous casting, casting blank cutting and rolling. After the steelmaking procedure is finished, when molten steel is tapped and enters a steel ladle, coke nuts are added into the steel ladle along with flowing of the molten steel, the molten steel and the coke nuts are stirred under the dynamic conditions in the tapping process, the coke nuts are melted in the molten steel, and nitrogen increasing is achieved; and adding a vanadium-nitrogen alloy, a silicon-iron alloy, a silicon-manganese alloy, a manganese-iron alloy and an optional deoxidizer into the steel ladle along with the inflow of the molten steel, and alloying the steel ladle. According to the method, the nut coke is added in the early stage of the tapping process, then alloying is conducted, nitrogen increasing is achieved through the nut coke, microalloy elements added into the steel have sufficient conditions to be separated out, second-phase particles are formed, and improvement of the mechanical property of the steel is promoted.

The present invention provides a digital detection and control fermentation vehicle, which relates to the field of fermentation equipment, including: a fermentation box, a hydraulic cylinder is installed on one side of the fermentation box, a feeding mechanism is installed on the top of the fermentation box, and a discharge mechanism is installed at the bottom of the fermentation box, and the discharge mechanism includes a carrier plate, and one end of the top of the carrier plate is connected to one end of the bottom of the fermentation box through a rotating shaft, and a weighing sensor is installed on the top of the carrier plate; oxygen is delivered by using an aeration pipe to provide oxygen for enzymatic bacteria to quickly decompose the material; a control system is set outside the fermentation box, which can remotely control the temperature, fine-tune the aeration oxygen supply, aeration start, stop time and aeration volume, record the changes in fermentation temperature and oxygen content and generate curves, vehicle travel and position information, record weight changes during fermentation, etc., and cooperate with the four stages of fermentation parameters of the fermentation box for control, so that the temperature and aeration in each stage of the fermentation process can be accurately controlled to improve the fermentation efficiency.

The application provides a halogen-free copper-clad plate, which comprises 90-110 parts by weight of epoxy resin, 100-300 parts by weight of phosphorus-containing amine bismaleimide curing agent, 0.5-5 parts by weight of accelerator, 300-700 parts by weight of solvent and 150-400 parts by weight of inorganic filler according to the mass parts of raw materials. The halogen-free copper-clad plate provided by the application has a specific formula and composition, and the phosphorus-containing amine bismaleimide curing agent with a specific structure and composition has an amine group as an active group, high nitrogen content, better synergistic flame-retardant effect with phosphorus, better compatibility and stability of nitrogen elements on the main chain of the long-chain curing agent. Further, the curing agent contains a maleimide group, so that the cured product has excellent heat resistance. The halogen-free copper-clad plate with more excellent heat resistance and comprehensive performance is obtained by the combination of the other simple raw material formula and the specific pressing process.

This invention discloses a method for improving the dewatering efficiency of antibiotic bacterial residue through hydrothermal carbon conditioning combined with high-pressure filtration. The method involves placing sludge in a hydrothermal reaction vessel and carbonizing it at a constant temperature of 180℃–280℃ for 0.5–6 hours. The hydrothermal carbon from the hydrothermal carbonization reaction is then added to antibiotic bacterial residue with a moisture content of 85–98 wt.%, and after thorough mixing with hydrogen peroxide to break down the cell walls, high-pressure filtration is performed to obtain the dewatered antibiotic bacterial residue filter cake. The hydrothermal carbonization technology proposed in this invention requires no additional reagents, and the preparation temperature is lower compared to traditional carbon materials. Compared to traditional thermal treatment dewatering of antibiotic bacterial residue, only a very small proportion of hydrothermal carbon is needed to achieve highly efficient dewatering of the antibiotic bacterial residue, further reducing costs. Furthermore, this invention achieves both efficient dewatering of antibiotic bacterial residue and safe disposal and resource utilization of sludge waste.

The invention discloses a mineralized biological organic fertilizer production method, which comprises: S1, raw material collection and classification: automatically sorting various organic biological wastes including vegetable heads, vegetable leaves, leftovers, animal sclerotin, courtyard weeds, branches and leaves, straw, wheat straw and the like through a waste sorting system; s2, primary treatment: collecting swill formed by the leftovers in the S1, then carrying out oil-water separation treatment on the collected swill, and collecting separated water; s3, composting fermentation; and putting the classified organic garbage into a composting system, and carrying out secondary fermentation and tertiary decomposition. The mineralized bio-organic fertilizer prepared by the invention not only can quickly activate soil microorganisms and accelerate soil air circulation, but also can effectively improve the nitrogen content of soil, and secondly, plants are fed by utilizing secretions and metabolism of the microorganisms, so that the requirement of regular or periodic fertilization is reduced, and self-feeding circulation is formed.

The invention relates to a control method for stabilizing nitrogen increase of molten steel by using nitrogen in an argon station, and the production method comprises the following steps: accurately controlling the oxidability of converter tapping, combined blowing of gas, gas stirring control after tapping, alloying in the tapping process, use of nitrogen-containing alloy and the like, so that the nitrogen content is increased to 130-240 ppm, and the fluctuation of the nitrogen content of the same steel grade is controlled within 40 ppm; according to the method, a part of alloy is replaced by a relatively cheap nitrogen medium, so that the effects of saving energy and reducing consumption are achieved, and the problems of large nitrogen blowing and increasing fluctuation and easy generation of blow-by in the smelting process are well solved. According to the invention, the nitrogen content is integrally increased from the previous 86.4 ppm to 128.4 ppm, the steel strength is improved by about 30-50 Mpa, and the alloy cost is reduced by about 20 yuan / ton; the fluctuation of the nitrogen content is reduced and is reduced from 188 ppm to 40 ppm; and by means of automatic switching of the nitrogen and argon valve set, blow-by of nitrogen and argon is eradicated, and the influence on production of other steel types is avoided.

The invention discloses a microbial fermentation inoculant, a pepper harvesting waste organic fertilizer, a method for producing the organic fertilizer by rapidly decomposing pepper harvesting waste by using the microbial fermentation inoculant, and application of the microbial fermentation inoculant and the pepper harvesting waste organic fertilizer. The microbial fermentation inoculant disclosed by the invention comprises a bacterial strain penicillium ZC1 (the preservation number is CGMCC No.40237) and a bacterial strain trichoderma asperellum ZC3 (the preservation number is CGMCC No.40236), and the microbial fermentation inoculant can efficiently degrade lignocellulose and increase the total nitrogen content of a fermentation product; the zanthoxylum bungeanum harvested waste organic fertilizer is obtained by adding the microbial fermentation inoculant twice (after the initial stage of composting and the first high-temperature stage) to ferment zanthoxylum bungeanum harvested waste, so that the fermentation product is quickly decomposed, the ecological toxicity of zanthoxylum bungeanum residues directly returned to the field to plants is eliminated, and the plant growth is promoted or the soil is improved; the preparation method of the organic fertilizer disclosed by the invention is clean, environment-friendly and low in cost, and particularly realizes resource cyclic utilization of the harvested Chinese prickly ash. According to the invention, the fermentation efficiency of agricultural wastes is improved, the content of nutrient elements and fertilizer efficiency of the organic fertilizer is increased, natural recycling of biomass sources is realized, and the application prospect is wide.

The invention relates to the technical field of preparation of catalysts, and particularly discloses a preparation method and application of a carbon nanotube-nitrogen-doped porous carbon-loaded monatomic copper catalyst, water is used as a cosolvent, a 5, 5-divinyl-2, 2-dipyridyl copper complex and vinyl imidazole bromine salt are used as comonomers, azodiisobutyronitrile is used as an initiator, and the carbon nanotube-nitrogen-doped porous carbon-loaded monatomic copper catalyst is prepared through a hydrothermal method. Adding a certain amount of multi-walled carbon nanotubes, uniformly stirring the mixture, carrying out polymerization reaction at 80-140 DEG C for 12-48 hours, cooling, washing, and carrying out vacuum drying to obtain a nitrogen-containing porous polymer and carbon nanotube composite material; and further, heating the obtained nitrogen-containing porous polymer and carbon nanotube composite material to 550-700 DEG C under the protection of inert gas for pyrolysis, and cooling to room temperature to obtain the carbon nanotube and nitrogen-doped porous carbon loaded monatomic copper catalyst. The catalyst is of a core-shell structure, and copper is in monatomic dispersion. The catalyst shows excellent catalytic performance and recycling performance in the reaction of catalyzing methanol liquid phase oxidative carbonylation to prepare dimethyl carbonate.