14 results about "Cellulosic ethanol" patented technology

The embodiment of the invention provides a method and a device for synthesizing cellulosic ethanol and co-producing methanol from biomass. The method comprises the following steps: carrying out cellulosic ethanol production treatment on biomass to obtain cellulosic ethanol fermentation residues and refined cellulosic ethanol; carrying out gasification treatment on the cellulosic ethanol fermentation residues to obtain crude synthesis gas; carrying out purification treatment on the crude synthesis gas to obtain purified synthesis gas; performing component modulation treatment on the purified synthesis gas to obtain component-modulated synthesis gas; and carrying out a methanation reaction on the component-modulated synthesis gas to obtain methanol. Through the method, high-purity methanol is directionally prepared while high-value cellulosic ethanol is prepared from biomass.

The invention relates to the technical field of biochemical engineering, and discloses a cellulosic enzymolysis reaction device for cellulosic ethanol production, the cellulosic enzymolysis reaction device for cellulosic ethanol production comprises a reaction device body, the cellulosic enzymolysis reaction device for cellulosic ethanol production is provided with a mixing assembly, a rotating rod rotates to drive an abutting plate to rotate, the surface of the abutting plate abuts against the surface of a sliding plate, and a rotating disc rotates to drive the sliding plate to rotate; under the action of centrifugal force, an arc-shaped connecting plate moves, a sliding block abuts against a concave rod, the concave rod drives a sliding plate to retract into a linkage groove of a rotary disc, a limiting rod limits the sliding plate, the rotary disc cannot continue to rotate at the moment, the sliding block and the arc-shaped connecting plate return to the original position, the surface of an L-shaped rod abuts against a slope block, the slope block drives the limiting rod to retract, and the limiting rod does not abut against the sliding plate any more; when the rotating disc rotates, the sliding plate returns, the abutting plate abuts against the surface of the sliding plate again, the rotating disc is driven to rotate again, the arc-shaped connecting plate can be folded inwards in a reciprocating mode, the thrown-out raw materials can be folded inwards again, and then more sufficient stirring and mixing can be achieved.

The present invention addresses to an optimized process for the production of ethanol from energy cane, by the integration of first-generation (1G) and second-generation (2G) technologies, which presents the advantages of reducing energy and water consumption. More specifically, the secondary juice from the second set of three rolls of mills of the conventional process (1G) is used for dilution, in the enzymatic hydrolysis step, in the cellulosic ethanol production process (2G).

The invention provides a curing device and process for a cellulosic ethanol raw material. The curing device comprises a screw conveyor, a high-pressure feeder, a digester, a spray explosion beating screw feeder, a spray explosion beating machine and a spray collection bin. After being crushed, the biomass raw materials enter the screw conveyor, meanwhile, a catalyst is added from a dosing port of the screw conveyor, and the biomass raw materials are scattered and conveyed in the screw conveyor, and meanwhile, the catalyst is infiltrated into the biomass raw materials; the biomass raw material added with the catalyst enters a high-pressure feeder to be compressed into a material plug for blocking steam, dynamic feeding is achieved, and the biomass raw material is crushed and enters a digester; in the digester, saturated steam is matched with a cooking spiral to carry out dynamic overturning active cooking and curing on the biomass raw materials; the cooked and cured biomass raw material is subjected to spray explosion and beating, and is in a velvet state under the condition of high-speed spray explosion and tearing. After spray explosion and beating, the fibers are uniform in particle size, length and particle size form and consistent in color and luster, and the later-stage enzymolysis yield can be increased.

The invention relates to the technical field of microorganisms, and particularly discloses saccharomyces cerevisiae IMPHA-6 and application thereof in fermentation production of ethanol. The invention provides a Saccharomyces cerevisiae strain capable of resisting multiple stress, which is Saccharomyces cerevisiae IMPHA-6, and the preservation number of the Saccharomyces cerevisiae strain is CCTCC (China Center for Type Culture Collection) NO: M 20251412. The saccharomyces cerevisiae strain can solve the problem of low fermentation efficiency caused by a composite inhibitor (such as potassium chloride, ethanol, furfural and vanillin) in the lignocellulose hydrolysate, and can remarkably improve the reducing sugar utilization rate and ethanol yield during fermentation of the corn straw cellulose hydrolysate; a novel efficient microbial resource and method are provided for biomass energy production, and promotion of industrial production of cellulosic ethanol is facilitated.

The invention provides a cellulosic ethanol vinasse high-added-value utilization method, and belongs to the technical field of vinasse reutilization. The method comprises the following steps: (1) dehydrating cellulosic ethanol vinasse until the solid content is greater than or equal to 30%; (2) mixing and cooking the dehydrated vinasse and an alkaline agent, and separating to obtain a cellulose-containing solid and lignin alkaline solution; (3) washing and dehydrating the cellulose-containing solid to obtain pure cellulose and a washing solution, and combining the washing solution with the lignin alkali solution to obtain a combined solution; (4) concentrating the combined solution until the solid content is greater than or equal to 20% to obtain a concentrated solution; (5) dropwise adding an epoxidation reagent into the concentrated solution, and carrying out a modification reaction, so as to obtain the lignin-based adhesive; (6) mixing the pure cellulose with a papermaking additive, and preparing paper through papermaking; wherein the lignin-based adhesive is used for surface sizing or coating of paper. The method is used for integrally producing the high-purity cellulose and lignin adhesive for papermaking, the utilization rate of lignin is increased, and the problems of shortage of paper pulp raw materials and the like are solved.

The present disclosure provides a system for producing cellulosic ethanol by biomass saccharification and fermentation. The system includes a reactor A configured to carry out an enzymatic hydrolysis reaction of a biomass feedstock, a reactor B configured to carry out a fermentation reaction of the biomass feedstock, and a collection tank configured to collect the cellulosic ethanol produced from the fermentation reaction of the biomass feedstock. The reactor A is connected to the reactor B, the storage tank, and the collection tank, and the reactor B is connected to the storage tank. The present disclosure also provides a method for preparing cellulosic ethanol implemented by the system, by which multiple cycles processes of enzymatic hydrolysis, fermentation, and the ethanol extraction are carried out on the biomass feedstock at intervals, thereby reducing the inhibitory effect of the ethanol accumulation on the hydrolysis and fermentation processes and improving the conversion rate of the cellulosic ethanol. By setting a storage tank, two batches of materials can be processed simultaneously in one system, thereby greatly improving the production efficiency of cellulosic ethanol.

The invention provides a process and a device for co-production of synthesis gas and green organic products by non-grain biomass fermentation through dry powder feed gasification, non-grain biomass is subjected to pretreatment and enzymolysis to obtain a sugar solution and residues, the sugar solution is fermented to prepare a fermentation product, the residues are dried to obtain powder, the powder is gasified by pure oxygen or oxygen-enriched gas after entering a gasification furnace to obtain crude synthesis gas, and the crude synthesis gas is fed into the gasification furnace to be gasified by the pure oxygen or oxygen-enriched gas to obtain the green organic products. The purified product can be used as a product or can be further prepared into a green organic product; the residues are adopted as raw materials and are conveyed into a gasification furnace only through a powder conveying device after being dried, power consumption and heat energy consumption such as briquetting or granulation, carbonization and grinding of traditional biomass gasification are omitted, the technical route is relatively low in comprehensive energy consumption, the powder obtained after the residues are dried is uniform and stable in particle size and low in water content, and the energy consumption is low. The process cost and the equipment investment cost are low; and green organic products or synthesis gas products with relatively high additional values can be obtained while green cellulosic ethanol and other fermented products are obtained.

The present application relates to a kind of cellulose ethanol production closed loop recycling system, comprising the following steps: S1, cellulose biomass is placed in sodium citrate buffer solution, sulfomethylization modified lignin is added, and then cellulase is added, and cellulase enzymatic saccharification is carried out, and after saccharification, the sugar solution is inoculated with saccharomyces cerevisiae and enters fermentation process, and monosaccharide is converted into ethanol;S2, sulfomethylization modified lignin is recovered from the product obtained in S1 by solid-liquid separation method, and is regenerated by alkali elution or resulfonation, and is used in S1 for the next round of cellulose ethanol production process.Compared with prior art, the present application can reduce the non-productive adsorption of cellulase and lignin, while reducing the toxicity of inhibitors, thereby improving the saccharification and detoxification efficiency, and ultimately improving the ethanol yield;The present application recycles and utilizes the byproduct lignin in the ethanol production process, and constructs an efficient detoxification saccharification and resource recycling closed loop system.

The present invention relates to variants of an alpha-amylase which have an increased exoamylase activity compared to the parent alpha-amylase. The present invention also relates to methods of making the variant alpha-amylase and the use of the variant alpha-amylase in baking, detergents, personal care products, in the processing of textiles, in pulp and paper processing, in the production of ethanol, lignocellulosic ethanol or syrups and as viscosity breaker in oilfield and mining industries.

The application discloses a UCST response quaternary ammonium salt polymer enzymatic hydrolysis promoter, which is a polymer of a zwitterionic betaine monomer and a quaternary ammonium salt monomer, the zwitterionic betaine monomer is a sulfobetaine monomer shown in formula (I), a phosphobetaine monomer shown in formula (II) or a carboxybetaine monomer shown in formula (III), in the formula (I), (II) and (III), m=1 or 2; R is (CH2) n , wherein n=2 or 3, and the quaternary ammonium salt monomer is a quaternary ammonium salt monomer shown in formula (IV), in the formula (IV), m=1 or 2; X is halogen. n The application further discloses a preparation method of the enzymatic hydrolysis promoter and a method for recovering cellulase at room temperature. The enzymatic hydrolysis promoter can efficiently strengthen enzymatic hydrolysis and efficiently recover cellulase in an enzymatic hydrolysis system at room temperature, and is of great significance to reducing the production cost of biological refining and cellulose ethanol.

This invention relates to the field of cellulosic ethanol preparation and discloses a method for preparing cellulose ethanol. The method includes: (1) first crushing the cellulose raw material, wherein the proportion of raw material with a particle size of 10-20 cm after the first crushing is not less than 40 wt%; (2) conveying the material after the first crushing to a sieve with a sieve aperture of 0.2-1 cm for the first sieve; (3) air classifying the material after the first sieve; (4) cyclone separating the air-classified raw material and then crushing it a second time until the proportion of raw material with a particle size of 2 cm < ≤ 5 cm is not less than 70 wt%; (5) washing and dehydrating the material after the second crushing and then mixing it with a catalyst; (6) dehydrating the mixture obtained in step (5) so that the dry matter concentration of the material is ≥ 30 wt%. The preparation method of this invention has a high impurity removal rate, reduces the equipment wear and processing difficulty of subsequent processes, and increases the conversion rate of cellulosic ethanol.

The invention discloses a drug-loaded ethanol gel RDX-based composite explosive as well as a preparation method and application thereof. The composite explosive is prepared from the following raw materials: cyclotrimethylene trinitramine (RDX), methyl cellulose (MC), ethanol, deionized water and a dispersing agent. Wherein the MC-ethanol gel is used as a'carrier ', the RDX is used as a'main drug', a'solution blending-gel method 'is adopted, RDX-ethanol slurry is added into the methyl cellulose-ethanol gel, and after stirring or shearing dispersion, the drug-loaded MC-ethanol gel RDX-based composite explosive is prepared, and the drug-loaded MC-ethanol gel RDX-based composite explosive shows a remarkable shear thinning behavior and a rapid structure recovery capability; compared with a traditional mechanical dry mixing method, the RDX-based composite explosive prepared through the method has the advantages that RDX crystals in the RDX-based composite explosive are evenly coated with a gel network, interface bonding is tight, micro-nano-scale uniform dispersion and coating of RDX in a binder can be effectively achieved, mechanical sensitivity is remarkably reduced, and meanwhile good detonation performance is kept.

The present application relates to clay processing technology field, especially to a kind of high hardness antioxidant pottery and production method, the pottery includes embryo, embryo bubble filling solution, glaze solution;The embryo is made by kaolin, bentonite, water glass and water mixing;The embryo bubble filling solution raw material includes silica sol, methyl cellulose, ethanol and boric acid;The embryo bubble filling solution is prepared as follows: step 1, the solid content of silica sol is selected 30%;In the scheme, by bentonite, water glass, the binding force and density of green body are enhanced in green body preparation stage;Utilize specially-made embryo bubble filling solution, effectively fill the bubble in green body, eliminate defects;Adopt specially-made glaze solution composed of multiple high-performance components, form hard and antioxidant protective layer on the surface of pottery, realize the significant improvement of pottery in hardness and antioxidant performance, meet the market demand for high-quality pottery, have important practical application value and broad market prospect.