64 results about "Agricultural biomass" patented technology

A particle is provided that includes 5 wt % to 90 wt % of agricultural biomass, combustion residues, biosolids, or a combination thereof. A binder intermixed with the agricultural biomass, combustion residues, biosolids, or a combination thereof retains the mixture in the form of a particle. The resultant particle creates a use for existing waste streams while also improving soil quality. A process of stabilizing agricultural biomass, combustion residues, biosolids, or a combination thereof particles is also provided that includes combining agricultural biomass, combustion residues, biosolids, or a combination thereof with mineral and/or synthetic chemical fragments having a bulk density of greater than about 40 pounds per cubic foot and a sizing of about 100% passing through a 30 mesh screen and about 50% or more passing through a 200 mesh screen. By adding binder, a particle is formed that is deodorized and/or stabilized. Through the choice of binder, the particle can be rendered dispersible to rapidly disintegrate into soil.

An integrated combustion chamber and fluidized bed pyrolysis reactor. In one embodiment, the combustion chamber is cylindrical and the pyrolysis reactor is provided annularly about the combustion chamber with an annular wall that provides a common surface for heat transfer. A lift tube in fluid communication with the pyrolysis reactor is provided within the combustion chamber for circulating biomass and an inert fluidizable media upwardly through the lift tube; this advantageously increases heat transfer and leads to more rapid pyrolysis. The media and biomass exit the lift tube into either a freeboard area of the pyrolysis reactor or into a low density region of the fluidized bed. A condensable gaseous product is produced during pyrolysis that has economic value. The apparatus and process are especially well suited to the pyrolysis of low density agricultural biomass. The apparatus is compact and particularly well suited to mobile operation.

The invention is directed to compositions comprising at least one agricultural biomass, at least one nitrogen source, at least one organic acid and at least one active agent wherein the agricultural biomass is impregnated with about 5% wt to about 45% wt of the active agent. Methods of their preparation and methods of use are also described. The composition effectively reduces the leaching of, and facilitates the metering of, loaded active agents for plant protection.

The invention relates to lignin-bound biochar coated urea and a preparation method thereof and belongs to the technical field of utilization of agricultural biomass. A binder used in the lignin-bound biochar coated urea comprises acid-precipitated lignin, a pyroligneous liquid and water in different weight ratios. The preparation method comprises the following steps of dissolving acid-precipitated lignin in a pyroligneous liquid or a pyroligneous liquid and water to obtain the binder; and granulating, spraying and drying to obtain the lignin-bound biochar coated urea finished product. The binder is novel in components and environment-friendly; the preparation method is reasonable and simple, the preparation process is simple and feasible, low in production cost; and the urea has the advantages of high fertilizer utilization rate, long fertilizer effect time, light environmental pollution and good antibacterial effect, and the soil structure is improved.

The invention relates to the field of desulfurization in circulating fluidized bed furnace, in particular to a carbide slag composite calcium-based sorbent based on biomass quenching and tempering anda preparation method thereof. According to the sorbent, the biomass is mixed with the wet carbide slag to adjust the moisture in the carbide slag, so that the furnace charging problem of the wet carbide slag can be solved without a heating the drying process; the carbide slag is quenched and tempered by utilizing biomass, chemical modification of carbide slag is realized, rich soluble potassium is contained in the biomass, the migration of potassium in the biomass to the carbide slag surface of solid waste-based calcium-based sorbent can be realized through the quenching and tempering, so that the diffusion capacity of CaO in the CaSO4 dense product layer is improved during the desulfurization process, and the calcium conversion rate of the calcium carbide slag in the furnace when put into the furnace as small particle diameters can still be achieved when the carbide slag is put into the furnace with relatively large particle diameters; the sorbent has the advantages of high utilization efficiency, good desulfurization performance, short preparation process, low production cost and the like. Not only can the synergistic effective utilization of solid waste carbide slag and agricultural biomass be realized, but also the cost of desulfurization in the circulating fluidized bed furnace can be reduced.

The invention discloses a recomposed Escherichia coli and a method for producing PHB by using cheap biomass raw materials fermented by the recomposed Escherichia coli. The invention knocks out ptsG gene of the Escherichia coli MG1655 by homologous recombination technology, the Escherichia coli Q3 is obtained by injecting phbCAB gene cluster from alcaligenes eutrophus, and the strain is collected in China Center for Type Culture Collection on July 9, 2008, with the collection number of CCTCC NO of M 208105. The Escherichia coli Q3 can compose PHB by effective utilization of agricultural biomass raw material hydrolyzate, and a maximum concentration of the strains of 8.88g/L is reached 24 hours after the fermentation; PHB reaches a maximum concentration of 6.42g/L and the PHB content in the cell reaches 72.3 percent 20 hours after the fermentation. Under the same fermentation condition, by the technology, the output of PHB equal to that obtained through the utilization of glucose to produce PHB without reforming Escherichia coli can be obtained, and the production cost is far less than that by the simple utilization of glucose, thus having great practical value in the actual application.

The invention discloses a method for directly preparing molten steel from high-silicon iron ores. The method comprises the following steps of: preparation and grinding of biomass charcoal, grinding and ball milling of the high-silicon iron ores, preparation of carbon-containing pellets, direct reduction, and separation of high-temperature iron slag. Compared with existing methods for processing the high-silicon iron ores, the method has the advantages that biomass charcoal is prepared from wide-source agricultural biomass waste and is utilized as a reducer for preparing the carbon-containing pellets, and the carbon-containing pellets are subjected to direct reduction and electric furnace high-temperature melting by virtue of a commercial FASTMELT process; by controlling reduction conditions, high metallized pellets with extremely carbon residue are obtained in a direct reduction stage; and the molten steel with the quality directly reaching or exceeding converter tapping standards is directly obtained in a high-temperature melting stage. The method has the advantages that the recovery rate of iron is high, the quality of the obtained liquid-state low-carbon and low-silicon molten steel is good, and the like. According to the method, the conventional sintering-blast furnace-converter flow for iron-making and steel-making is avoided, so that the flow of processing the high-silicon iron ores is greatly simplified.

A method for utilizing agricultural biomass components, namely cellulose, hemicellose, and lignin, and converting them to value-added biobased chemical products is described herein. The present method provides treatments to obtain a plurality of component streams from agricultural biomass for producing derivative products while minimizing waste products.

The invention discloses a method for regulating and controlling the alkalinity of red mud through pyrolysis of agricultural biomass waste, which belongs to the technical field of environmental protection. The method comprises the following steps: (1) placing red mud in a ventilated place for natural air drying and sieving treatment to obtain sieved red mud; (2) cleaning collected farmland straw, removing impurities in the straw, cleaning, drying, crushing and sieving to obtain sieved straw; (3) fully mixing the sieved red mud and the sieved straw in a stirring barrel; and (4) putting an obtained mixed red mud and straw into an oxidizing atmosphere for pyrolytic reaction, thereby obtaining the product after the reaction is finished. According to the method, the alkalinity of red mud is reduced by utilizing a product from biomass pyrolysis process; the agricultural biomass waste material straw is adopted, and through the synergistic effect of straw and red mud, the resource utilization problem of straw and strong basicity problem of red mud are solved.

The invention relates to a lignin plastified adhesive biological carbon-base urea and a preparation method thereof, belonging to the an agricultural biomass fertilizer and a preparation technique thereof. The biological carbon-base urea is composed of pyrolytic biomass carbon, urea and alkali lignin in different weight ratios. The preparation method comprises the following steps: pulverizing crop waste, pyrolyzing to perform carbonizing treatment to obtain the pyrolytic biomass carbon, uniformly mixing the pyrolytic biomass carbon with the urea and alkali lignin, adding 100 wt% of water, heating at 60 DEG C in a sealed environment for 5-10 minutes to obtain a raw material, adding the raw material into a mold, carrying out pressure forming, and drying the formed lignin plastified adhesive biological carbon-base urea at 45 DEG C for 2 hours to obtain the finished product. The lignin plastified adhesive biological carbon-base urea has novel, reasonable an simple components; and the manufacturing technique is simple and easy to implement, and has the advantages of low production cost, high utilization ratio of fertilizer, long fertilizer effect time and low environmental pollution.

The invention belongs to the technical field of agricultural biomass forming and particularly relates to an extrusion forming device for agricultural biomass fuel. The extrusion forming device comprises a rack (1) and is characterized in that a shell (2) is further arranged on the rack (1), the shell (2) is provided with an inclined channel (3), an auger feeding device (4) and a compression hydraulic cylinder (5) are arranged in the channel (3), a compression channel (6) is formed below the compression hydraulic cylinder (5), and an extrusion hydraulic cylinder (7) is arranged below the compression channel (6); a motor (9) is arranged on one side of the shell (2), and a control cabinet (8) is further arranged on the rack (1). A gearbox (11) is further installed on one side of the motor (9), and the compression hydraulic cylinder (5) and the extrusion hydraulic cylinder (7) are respectively connected with the gearbox (11). The extrusion forming device is simple in structure, low in cost and high in pressure, the compactness rate of the biomass fuel is high, and the moisture content is low, and formed pressed blocks can be directly packaged, stored and transported.

The invention belongs to the technical field of agricultural biomass resource utilization, and particularly relates to a production system and a production method of a biochar-based coated nitrogen fertilizer, wherein the production system comprises: a pretreatment system, a carbonization system, an oil-gas-water separation system, a breaking device, a coating film material preparation system, a rotary drum fluidized bed system, a drying and rounding system and a power generation system. According to the present invention, by combining the biochar as the film coating material and the chemicalfertilizer, the novel biochar-based coated nitrogen fertilizer with advantages of convenient use, high fertilizer efficiency, high fertilizer utilization rate and environmental protection is prepared.

The invention discloses a porous slow-release carbon filler and a preparation method thereof. The filler is prepared from, by mass, 1% of zeolite, 0.3-0.4% of cement, 0.01-0.03% of agricultural biomass waste and 0.0005-0.0009% of aluminum powder. The invention further discloses application of the porous slow-release carbon filler for treating wastewater in a biological aerated filter. The porous slow-release carbon filler and the preparation method and application thereof have the advantages that compared with other fillers, the biofilm culturing speed is quick under the equal conditions; theremoval effect on contaminants (COD, NH4<+>-N and TN) is good, not only can the porosity, adsorbability, ion exchange performance and stronger supporting effect of the zeolite be exerted, but also theagricultural biomass waste is used as a solid carbon source, additional carbon resources are reduced, and the damage of the filler in the later period of operation is also avoided.

The invention relates to agricultural biomass-sourced soilless culture selenium-enriched nutrient solution and a preparation method thereof. The nutrient solution takes biomass straw waste as a raw material and a selenium element source, smashing, enzymolysis and centrifugation are carried out to obtain biomass straw waste treating fluid, then the biomass straw waste treating fluid is mixed with mineral salt, amino acids, urea, folic acid, a compound growth regulator, oxidized glutathione and deionized water in a certain ratio, the mixed solution is stirred by utilizing a magnetic stirrer, then centrifugation is carried out, supernatant is taken, and finally dialysis is carried out by adopting a nanofilm, so that the filtered selenium-enriched nutrient solution is obtained. The obtained agricultural biomass-sourced soilless culture selenium-enriched nutrient solution not only can release natural plant active factors and promote root growth of crops but also can improve the immunity ofthe crops in resistance to plant diseases and insect pests, promote photosynthesis of the crops and improve the yield and the quality of the crops.

The invention discloses a method for preparing a paper-making reconstituted tobacco substrate with high air permeability and high absorptivity; a fluffy auxiliary agent is added into the paper-makingreconstituted tobacco substrate, and the adopted fluffy auxiliary agent is derived from agricultural wastes and has the characteristics of light weight, looseness and porosity. The fluffy auxiliary agent is prepared by soaking inorganic waste powder generated after agricultural biomass wastes such as straws, rice husks, barks and the like are subjected to power generation by a biomass power plantin sodium hydroxide, separating a solid phase and a liquid phase, and reacting the liquid phase with calcium hydroxide. The goal of improving the air permeability and the absorptivity of the paper-making reconstituted tobacco is achieved. Firstly, tobacco stems and tobacco powder which are subjected to leaching, solid-liquid separation and defibering are mixed with additional plant fibers and fluffy auxiliary agents to prepare pulp, and finally, the pulp is made into the substrate. By improving the air permeability and absorptivity of the paper-making reconstituted tobacco, the smoking performance of cigarettes is improved, the combustion performance is improved, the effects of reducing tar and harm are achieved, and a new method is provided for continuous industrial production of the paper-making reconstituted tobacco.

The present invention relates to a microfibrillated cellulose composition comprising a microfibrillated cellulose originating from agricultural biomass, said microfibrillated cellulose composition comprising: 30 wt % cellulose, 1-15 wt % pectin, 8-25 wt % hemicellulose, 0-12 wt %, lignin, 0-15 wt % ash, and 0-8 wt % protein, based on dry solids content of said composition. The present invention further relates to its manufacture, and use in and manufacture of paper and paperboard products.

The invention discloses a method of utilizing rice bran hydrolysate fermentation to prepare bacterial cellulose and belongs to the technical field of biology. The method includes: 1), mechanically pretreating rice bran; 2), subjecting rice bran powder to compound enzymolysis; 3), subjecting rice bran hydrolysate to controllable fermentation; 4), sterilizing a bacterial cellulose membrane; 5), purifying a sterile bacterial cellulose membrane. Raw materials of the method are from rice processing byproducts, so that cost is low, process is simple, high bacterial cellulose generating ability is realized while product high crystallinity is ensured, production cost of bacterial cellulose can be lowered effectively, agricultural biomass waste resources can be utilized fully, high-value and comprehensive utilization of the agricultural biomass waste resources is promoted, and ecological environment is protected.

The invention relates to a dry fermentation system and a using method thereof, and belongs to the technical field of agricultural biomass utilization. The system comprises a fermentation bank body, wherein an inlet is positioned on one side of the top part of the fermentation bank body, a discharge port is positioned at one end of the bottom part of the fermentation bank body, a spiral conveyer is arranged at the bottom of the fermentation bank body, and a feed device is arranged above the inlet; a bent-tube shaped piston cylinder is arranged in the feed device; the lower end of the vertical section of the piston cylinder is communicated with the inlet; and a piston driven by a reciprocating mechanism is arranged in the horizontal section of the piston cylinder. According to the dry fermentation system, automatic feeding and discharging operation and continuous gas production can be realized, the labor intensity of methane engineering operation can be greatly reduced, the automatic operation function is promoted, and the fermentation bank body is immersed in hot water and uniformly heated; biogas slurry enhanced spraying operation is adopted in the fermentation process, and a biogas slurry shell breaking injection device is arranged inside the fermentation bank body, so that the function of mass and heat transfer by shell breaking and biogas slurry injection can be enhanced, and the gas production rate and gas production quality can be greatly improved.

The invention discloses a dust collection device for agricultural biomass feed processing equipment, comprising an air barrel and a dust collection box; an intake end connection flange and an exhaustend connection flange are arranged at the front and rear ends of the air barrel respectively; the intake end connection flange is used for being connected with the biomass feed processing equipment; amotor is mounted in the air barrel through a motor fixture; air blades are fixed to the output end of the motor; a strainer is arranged to one side of the air blades and is fixed in the air barrel; aresidue outlet is arranged in the part, between the air blades and the strainer, of the sidewall of the air barrel and is connected with the dust collection box; the exhaust end connection flange isconnected with an exhaust bend; an end of the exhaust bend is connected with the dust collection box; a positive plate for producing positive charge is mounted in the exhaust bend. The dust collectiondevice has the advantages that dust produced by the biomass feed processing equipment during operating can be effectively treated, the efficiency is high, and the quality of a field work environmentcan be effectively guaranteed.

The invention discloses a split type hot blast stove which comprises a burner, a secondary burning furnace and a flue gas heat exchange device. A flame nozzle of the burner communicates with a flame receiving port of the secondary burning furnace, a flue gas outlet of the secondary burning furnace communicates with a flue gas inlet of the flue gas heat exchange device, an air inlet interlayer is arranged in the furnace wall of the secondary burning furnace, a blower is arranged on the furnace wall, an air outlet of the blower communicates with an air inlet of the air inlet interlayer, and theair inlet interlayer communicates with a hearth of the secondary burning furnace through the air inlet. The split-type hot blast stove is small in heat loss, high in heat utilization rate, sufficientin biomass particle combustion and environmentally friendly, the flue gas temperature is convenient to adjust, and the split type hot blast stove is suitable for burning granular fuels manufactured byvarious forestry and agricultural biomass leftover materials without slagging.

The invention relates to the technical field of biomass modification processing, and provides a Ni-Fe hydrotalcite biochar composite catalyst and a preparation method and application thereof. The preparation method comprises the following steps: (1) carbonizing and pyrolyzing agricultural biomass at a high temperature under a protective atmosphere to prepare biochar; (2) dispersing biochar in water to prepare a biochar dispersion liquid, adding nickel nitrate, ferric nitrate, sodium fluoride and urea into the dispersion liquid, mixing, and stirring to obtain a suspension liquid; and (3) carrying out hydrothermal reaction on the suspension to obtain the Ni-Fe hydrotalcite biochar composite catalyst. After Ni-Fe hydrotalcite is loaded to the biochar substrate, the dispersion degree of hydrotalcite is improved, leaching of nickel is reduced, pollution to the environment is relieved while the production cost is reduced, and the win-win situation of the Ni-Fe hydrotalcite and the biochar material is achieved. The composite catalyst provided by the invention can be applied to activating peroxymonosulfate (PMS) to degrade organic pollutants in a water body and has an excellent catalytic effect.