2154results about "Biofuels" patented technology

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

An integrated process having an ultra-low GHG footprint for converting Camelina based biomass to liquid fuels and lubricant base stocks in which a Camelina based biomass feed is converted to liquids by a multistep hydroprocessing method and the liquids are upgraded to produce premium hydrocarbon fuels and lubricants.

The invention relates to the field of biodiesel catalytic materials, and particularly discloses a catalyst for kitchen waste oil, a preparation method and biodiesel. The catalyst for the kitchen waste oil is prepared from a Fe3O4-SiO2-Pr < 3 + > nano-particle carrier and a lipase solution, the catalyst is prepared from a Pr (NO3) 3 solution doped with Pr < 3 + > being 0.88-0.92 wt%, the lipase solution is a pseudomonas lipase solution with the concentration being 22-28 mg / mL, and the pH is 7.0; the preparation method comprises the following steps: preparing Fe3O4 nanospheres, coating the surfaces of the Fe3O4 nanospheres with SiO2 layers, dipping the Fe3O4 nanospheres in a Pr (NO3) 3 solution, carrying out calcination treatment to obtain a Fe3O4-SiO2-Pr < 3 + > nanoparticle carrier, placing the carrier in a lipase solution, carrying out adsorption fixation, and separating out the carrier to obtain the catalyst. The catalyst is used for processing biodiesel and has the advantages of being easy to recycle, high in loading capacity, low in activity loss and good in stability.

The invention discloses a color consistency control method in a bamboo kitchen ware carbonization process, and belongs to the technical field of bamboo processing. The method comprises the following steps: acquiring a multi-dimensional spectral data vector of the surface of the bamboo kitchen ware; determining a multi-dimensional change rate vector of the spectral data; respectively generating a first candidate control signal and a second candidate control signal based on the spectral data and the change rate vector; determining a system dynamic state index based on the change rate vector; generating a dynamic weighting coefficient according to the dynamic state index of the system; and performing weighted fusion on the first candidate control signal and the second candidate control signal by using a dynamic weighting coefficient to generate a final heat regulation control signal. According to the invention, the method achieves the self-adaptive optimal control of all working conditions through the construction of a dual-mode decision fusion composite control system, guarantees the quick response in a dynamic stage, guarantees the smooth convergence in a steady-state stage, and fundamentally improves the thermal inertia problem of the system.

Escherichia coli is modified by means of metabolic engineering, a genetically engineered bacterium for high yield of O-succinyl-L-homoserine is obtained, and a construction method of the genetically engineered bacterium comprises the following steps: weakening a synthetic route of an organic acid metabolic byproduct of a chassis strain E.coli W3110 [delta] metI [delta] metJ [delta] thrB [delta] metB; wherein the synthetic route of the organic acid metabolic byproducts is selected from at least one of a formic acid synthetic route, a lactic acid synthetic route and an ethanol synthetic route. The constructed genetically engineered bacterium is applied to microbial fermentation production of the O-succinyl-L-homoserine, effective accumulation of the O-succinyl-L-homoserine is achieved, the sugar acid conversion rate reaches 46.8%, and a foundation is laid for subsequent construction of high-yield O-succinyl-L-homoserine engineering bacteria.

The invention discloses a method for improving the performance of clostridium aerovorans for synthesizing ethanol by utilizing gas fermentation. The method comprises the following steps: enabling the clostridium aerovorans to over-express ethanol synthesis pathway genes ald, adhE1 and adhE2; the expression of genes CLJU23220, CLJU25810 and CLJU25840 in the synthetic route of the 2, 3-butanediol is inhibited; and overexpressing acetic acid reuse genes aor1 and aor2. According to the clostridium yangdall engineering bacteria constructed by the method, the yield of ethanol synthesized by fermentation of synthesis gas is increased by 700% or above and reaches 1.70 g / L or above, and the synthesis amount of a by-product acetic acid is reduced by 18%.

The invention relates to the technical field of pest prevention and control, in particular to a method for treating pine wood nematode infected wood through poria cocos. The method comprises the following steps: cutting down current-year epidemic wood, and treating tree heads, tree trunks and boughs to complete peeling and tendon retaining treatment; uniformly cutting the trunk and the boughs into standard cut-logs; the method comprises the following steps: selecting fresh poria cocos sclerotium skin tissues as strains, and cutting according to an area greater than 50% of a cross section; pit pits are dug in the sunny slope; laying small branches on the bottom layer, placing the cut-logs in the pits, fixing the cut-logs with non-woven fabrics after inoculation, covering the upper layer with thin branches and leaves, and covering with soil; the two-stage biological process of mycelium planting, propagation expanding and pine wood nematode and medium insect killing is sequentially completed through a soil heat and moisture preservation environment; the propagation path of pine wood nematodes is blocked through the natural isolation effect of soil, deadwood obtained after poria cocos is subjected to biological verification and then smashed on site to return to forests or be made into fuel particles, and harmless and resource recycling of epidemic wood is achieved. According to the method, the problems of pine wood nematode propagation and epidemic wood treatment are synchronously solved.

The invention relates to a double-circulation symmetrical airflow type straw flash carbonization device which comprises a feeding mechanism, a conveying mechanism, a rotary carbonization furnace, a carbonization separator, a carbon outlet separator, a pyrolysis gas channel, a combustion furnace and a combustion separator, the rotary carbonization furnace is of a double-layer jacket type structure, and the design of an outer-layer high-temperature heating inner wall and an inner-layer tangential rotational flow inner cavity is adopted; the raw materials form a thin layer under the action of centrifugal force to finish flash carbonization. According to the invention, the combustion furnace and the rotary carbonization furnace which are symmetrically arranged, and the carbonization separator and the combustion separator are adopted, so that cyclic re-carbonization and graded collection of carbonized products, split-flow utilization of pyrolysis gas and stepped recovery of high-temperature flue gas are realized; the problems that a traditional device is low in continuous degree, high in energy consumption and insufficient in product purity are solved, and the straw carbonization efficiency and the resource utilization rate are remarkably improved.

The invention discloses a method for efficiently preparing a fatty acid type anti-wear agent based on biodiesel, which comprises the following steps: freezing and crystallizing the raw material biodiesel, filtering, evaporating and dealcoholizing, carrying out enzyme hydrolysis, insulating and layering, and rectifying under reduced pressure to finally obtain the fatty acid type anti-wear agent. Wherein the fatty acid composition of the crude methyl ester can be directionally regulated and controlled through freezing crystallization and filtering processes; through the synergistic effect of enzyme hydrolysis reaction and high-vacuum rectification separation coupling, efficient production of the fatty acid anti-wear agent prepared from biodiesel is achieved, the production period is greatly shortened, and the product quality is improved. According to the technology disclosed by the invention, the high-quality fatty acid type anti-wear agent can be produced economically, greenly, efficiently and stably, and the acid value of the product is stabilized between 198-203mgKOH / g oil and meets the Q / SHCG 57-2017 standard. The method has the advantages of low raw material requirement, wide application range, high production efficiency, high product quality, reproducible and reusable catalyst and the like, and is suitable for industrial production.

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu / lb, 13,000 Btu / lb, 14,000 Btu / lb, or 14,500 Btu / lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and / or strength that derive from the feedstock, heat rate, and additives.

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu / lb, 13,000 Btu / lb, 14,000 Btu / lb, or 14,500 Btu / lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and / or strength that derive from the feedstock, heat rate, and additives.

The invention provides a method for preparing carbon fuel from corn straw based on a functional composite binder, and belongs to the technical field of biomass solid fuel preparation. The preparation method comprises the following steps: uniformly mixing corn stalk charcoal powder with a functional composite binder to obtain a mixture, and then carrying out hot-pressing activation molding to obtain the corn stalk charcoal fuel. The functional composite binder comprises the following raw materials: phosphoric acid, polysilicic acid, polyethylene and sodium lignin sulfonate; the addition amount of the functional composite binder in the corn stalk carbon powder is 10-15 wt.%. According to the method, the controllability of the quality of the raw material carbon is greatly improved, the functional composite binder is adopted, the forming density, falling and breaking resistance and durability of the carbon fuel are improved, the process stability and repeatability are high, and a foundation is laid for large-scale production.

The subject invention provides compositions and methods for reducing the carbon footprint of producing biofuels. Microbe-based soil treatment compositions are utilized to reduce greenhouse gas emissions resulting from the agricultural practices of producing feedstock crops.

The invention relates to the technical field of production of potassium fulvate, in particular to a process for producing edible alcohol and co-producing potassium fulvate by fermenting beet. The method comprises the following steps: performing coarse crushing and fine crushing on beet to form slurry, adding squeezed water, and collecting into an adjusting tank; transferring the slurry into a conversion tank for biological conversion, then carrying out solid-liquid separation treatment to obtain juice and wet residues, and squeezing the wet residues; mixing the juice with the wine mother liquor, performing two-stage fermentation to obtain fermentation liquor, and concentrating the fermentation liquor to obtain edible alcohol and waste liquor; distilling the waste liquid and adding a fulvic acid transforming agent for fermentative degradation, and then evaporating to remove moisture and concentrating to generate a concentrated solution; lime milk and the concentrated solution are uniformly mixed and stirred for neutralization, and the neutralized concentrated solution is dehydrated and dried to generate potassium fulvic acid dry powder. According to the method disclosed by the invention, polysaccharide substances in the beet are subjected to sufficient enzymolysis by utilizing the biotransformation agent, and sugar contained in the beet is sufficiently released, so that the utilization rate of beet sugar is increased.

The present invention relates to a process for producing alcohols, according to which a sugary fluid (2) is introduced into a reaction section (1) comprising a support (4) on which microorganisms are immobilized, in order to produce, by fermentation, an alcohol-enriched must (3) under the action of said microorganisms, characterized in that the process is carried out continuously, and such that a portion of spent support (41) is periodically replaced by a portion of new and / or regenerated support (46).

The invention provides a sludge-based composite fuel as well as a preparation method and application thereof. The sludge-based composite fuel is prepared from the following raw materials in percentage: 40-60% of dewatered sludge, 20-40% of biomass powder, 3-8% of a nano catalyst and 2-5% of a composite adhesive. According to the sludge-based composite fuel, sludge, biomass and other fuels are mixed according to a certain proportion, the nano-catalyst is added to improve the combustion performance of the sludge fuel, the composite adhesive enhances the forming strength and waterproofness of the fuel, the component proportion and process conditions are optimized, and the sludge-based composite fuel is prepared. The problems that traditional sludge fuel is low in heat value, poor in combustion stability, high in pollutant emission and insufficient in forming storage performance are solved.

The invention relates to a process for extracting alcohols from an initial mixture (1) comprising alcohols in aqueous phase, with:a distillative separation by an isopropanol-butanol distillation column (III) equipped at the top with a condenser (c3), intended for separating said mixture into a water-isopropanol azeotrope stream (6) at the top and into a water-butanol azeotrope stream (7) at the bottom,a distillative separation intended for separating the water-butanol azeotrope stream into water and butanol, by a hetero-azeotropic distillation system comprising at least one water-recovering water column (IV) and at least one butanol (9)-recovering butanol column (V) equipped with a reboiler (r5),such that a heat transfer is performed from the top water-isopropanol azeotrope stream (6) entering the condenser of the isopropanol-butanol distillation column (III), to the stream entering the reboiler of the butanol column (V).

The invention discloses a melanin-producing aureobasidium for co-producing pullulan and converting American ginseng and application, and relates to the technical field of bioengineering fermentation. The melanin producing aureobasidium is aureobasidium melanogenum F8449, and the preservation number of the aureobasidium melanogenum F8449 is CGMCC (China General Microbiological Culture Collection Center) No. 23228. The strain can be used for simultaneously producing pullulan and biologically converting American ginseng extract in liquid, so that efficient utilization of fermentation substances is realized, the fermentation cost is reduced, and the fermentation income is increased.

The invention relates to the technical field of wine brewing, and discloses a bamboo leaf powder added distilled liquor and a preparation method thereof, and the distilled liquor is prepared from 75-85 parts of grain powder and 15-25 parts of enzyme-deactivated bamboo leaf powder. The preparation method comprises the following steps: mixing the raw materials to obtain a dry mixture; adding a compound enzyme preparation containing cellulase and pectinase, preserving heat at 50-55 DEG C, performing enzymolysis and moistening, destroying a fiber structure and converting fermentable sugar; cooking the moistened material, and adding a saccharifying enzyme for saccharifying; primary fermentation is performed at 28-32 DEG C, and then secondary fermentation is performed at 22-25 DEG C; during distillation, foreshot with the expected wine yield of 1.5%-2.0% is intercepted and abandoned to remove methanol, fractions with the volume of 50% or above are collected to obtain raw wine, and the wine is obtained through ageing. The raw material utilization rate and the wine yield are improved through enzymolysis, the methanol content is controlled through temperature-variable fermentation and precise cut distillation, the raw and green taste of bamboo leaves is eliminated, and the finished wine has the unique composite style of bamboo fragrance and grain fragrance.

The utility model discloses a biomass filter device, including support seat, shell, drive motor, roller and filtration pore, shell is fixed installation in the both sides of support seat inner wall, drive motor is fixed installation in the left side of shell, roller is fixed connection in the output end of drive motor, and the filtration pore is fixed connection in the support seat inner wall. The right side of the roller is movably connected with the right side of the inner wall of the shell through a bearing, and the filtering holes are formed in the surface of the shell. By arranging the annular scraping ring, the connecting block, the threaded block, the reciprocating assembly and the lifting assembly, the lifting assembly can effectively drive the connecting block to enable the annular scraping ring to be adjusted to the surface of the roller, then the reciprocating assembly drives the threaded block to enable the arc-shaped scraping ring to scrape and clean the surface of the roller, and the problem that the surface of the roller is scraped and cleaned when the roller is used for filtering is solved. The problems that due to lack of a cleaning structure, a part of biomass particles can be clamped into filter holes to cause blockage, and due to lack of the cleaning structure, a user difficultly cleans the particles in the filter holes are solved.

The invention discloses a method for improving the fermentation performance of clostridium aerovorans and application of the clostridium aerovorans, and according to the method, an effective amount of methionine or a derivative thereof is added into a fermentation culture medium of the clostridium aerovorans to completely replace expensive complex organic nitrogen sources such as yeast extracts. The method successfully solves the three technical bottlenecks of slow biomass accumulation, low ethanol yield and dependence on expensive nitrogen sources in the fermentation process of the clostridium aerovorans by utilizing synthesis gas or CO2 / H2 mixed gas. Experiments prove that methionine or a derivative thereof can synergistically promote growth metabolism of thalli and a synthesis path of a product, so that the gas conversion efficiency of a carbon source is remarkably improved and metabolism is guided to flow to ethanol synthesis while the growth rate and the final biomass of the thalli are improved, and thus the production capacity of alcohols is synchronously enhanced. The method is simple in process and remarkable in effect, and an efficient and economical new strategy is provided for reducing the production cost of biofuel and promoting industrial application of a synthesis gas biorefinery technology.

The invention relates to the technical field of biomass fuel processing, in particular to a biomass fuel raw material processing production line and a processing technology. Comprising a smashing assembly and a drying cylinder installed at the bottom of the smashing assembly, a driving assembly used for pushing raw materials to move is arranged in the drying cylinder, and a heating assembly is further arranged at the bottom of the drying cylinder. The crushing assembly is directly mounted at the top of the drying cylinder, so that a compact integrated structure is formed, and material transfer links and site occupation are effectively reduced. And a driving assembly is arranged in the drying cylinder, so that mechanical propulsion of the materials in the drying process is realized, and the continuity and stability of the processing flow are guaranteed. And meanwhile, a heat source can directly and efficiently act on the materials through the layout of the bottom heating assembly, and the heat energy utilization rate and the drying efficiency are remarkably improved. The overall design simplifies the operation process, and reduces the equipment investment and operation cost.

The invention belongs to the technical field of biomass pyrolysis, and particularly discloses a biomass solid particle pyrolysis reactor which comprises a reaction tank, a material conveying device is arranged in the reaction tank, and the material conveying device comprises an inner pipe, an outer pipe, a guide cover, a spiral protrusion, an auger blade, a driving assembly and a heating assembly. Compared with the single pyrolysis operation of the existing ablation vortex reactor, the pyrolysis time of the biomass raw material is prolonged, so that the heating coil only needs half of the power of a heating pipe in the existing ablation vortex reactor, the energy consumption is greatly saved, and the energy consumption is greatly reduced due to the fact that the power of the heating coil is reduced. Therefore, the phenomenon that some small-particle biomass raw materials are excessively pyrolyzed due to overhigh pyrolysis temperature and large-particle biomass raw materials are externally coked and internally generated can be avoided, and the pyrolysis effect of the whole biomass raw materials is improved.

The application provides an acid ester composite diesel anti-wear agent and a preparation method thereof, and belongs to the technical field of diesel additives, and comprises the following steps: S1, preparing a silanized solid acid catalyst; S2, preparing C18 polyol ester; S3, mixing an acid type anti-wear component and the C18 polyol ester, and then stirring after heating, and then adding tetrahydropyrazole pyridine derivatives and a diluent to continue stirring, and then cooling and filtering to obtain the acid ester composite diesel anti-wear agent. The application can improve the lubricity and anti-wear performance of low-sulfur diesel at a lower additive dosage, and has low corrosion and good oxidation stability.

The invention relates to the technical field of carbonization furnace leakage monitoring, and discloses a biomass carbonization furnace leakage monitoring method and system, and the method comprises the steps: obtaining a hearth pressure change, flue gas component detection and furnace body surface temperature image sequence, building a comparison data set according to historical stable operation segments, and carrying out the comparison according to a time window; marking a first suspected section when the flue gas concentration rises in the continuous window and the pressure fluctuates aperiodically, determining a second suspected section if a continuous high-temperature strip appears near a furnace door, a pipeline interface or a sealing seam in the section, and judging a leakage section according to the consistency of the abnormal flue gas concentration and the high-temperature strip; and generating section-level and boundary-level positioning results according to the positions of the leaked sections, recording marks, triggering reproduction judgment when subsequent abnormalities occur, and archiving the results and updating a contrast data set after an operation cycle is ended. According to the invention, through data collaboration and determination, the leakage identification speed is improved.

Described herein are genetically engineered enzymes having amylase enzyme activity, compositions comprising the enzymes, and methods of making and using the enzymes. The genetically engineered amylase enzymes are useful in many different applications such as laundry detergents, dish washing detergents, and cleaning products for homes, industry, vehicle care, baking, animal feed, pulp and paper processing, starch processing, brewing, and ethanol production.

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu / lb, 13,000 Btu / lb, 14,000 Btu / lb, or 14,500 Btu / lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and / or strength that derive from the feedstock, heat rate, and additives.

The invention relates to the technical field of catalysis, and particularly discloses a method for preparing pure biodiesel from kitchen waste oil through enzyme catalytic desulfurization. The method comprises the following steps: adding a Sm2O3 / ZrO2 solid acid catalyst into the kitchen waste oil for pretreatment to obtain pretreated waste oil, and then adding lipase into the pretreated waste oil for catalyzing transesterification to obtain the biodiesel. According to the method for preparing the pure biodiesel from the kitchen waste oil through enzyme catalytic desulfurization, in-situ esterification and synchronous desulfurization of free fatty acid can be completed in a single-step reaction, the stability of a conversion reaction is effectively improved, the production process is simplified, and the conversion efficiency of preparing the biodiesel from the kitchen waste oil is improved.

A thermotolerant xylanase enzyme that is a variant of SEQ ID NO:2, wherein the variant comprises at least one amino acid substitution at a position selected from the group consisting of 90, 105, 114, and 115 and / or comprises any of the following sets of substitutions: (a) G48C and T206C; (b) Y123V, S125C and N171C; (c) S114C, Y123V, S125C and N171C; (d) Y123V, S125C, N171C, G48C and T206C; (e) S114C, Y123V, S125C, N171C, G48C and T206C; wherein the substitution or substitutions increases the thermotolerance of the xylanase relative to a parent xylanase lacking the substitution(s).

The invention relates to a method for producing a juice concentrate having a reduced sugar content, in which method the sugar content of a juice is reduced by means of fermentation after the addition of microorganisms, and the ethanol produced by the fermentation is separated using additional fermentation products in an evaporator, as a result of which the juice concentrate having a reduced sugar content is obtained. The invention also relates to: a juice concentrate, preferably a fruit juice concentrate or vegetable juice concentrate, which can be obtained using said method; and a method for producing a juice having a reduced sugar content from said juice concentrate.