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56 results about "Biohydrogen" patented technology
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Biohydrogen is H₂ that is produced biologically. Interest is high in this technology because H₂ is a clean fuel and can be readily produced from certain kinds of biomass. Many challenges characterize this technology, including those intrinsic to H₂, such as storage and transportation of a noncondensible gas. Hydrogen producing organisms are poisoned by O₂. Yields of H₂ are often low.
Use of Methanol in the Production of Hydrogen and Fuel, Processes and Plants for the Production of Hydrogen and Fuel
InactiveUS20100317905A1Removes malodorous sulphurRefining to change hydrocarbon structural skeletonCombustible gas catalytic treatmentHydrogenBlack liquor
The invention relates to the use of biomethanol from the pulp industry in the production of biohydrogen. The preferred biomethanol comprises purified biomethanol derived from black liquor. The invention also relates to a process for the production of biohydrogen from crude biomethanol recovered from black liquor and to a process for producing hydrocarbon biofuel using such biohydrogen as a hydrogen source. The invention further relates to a biofuel production facility for producing fuel from biohydrogen and biohydrocarbon, and to biofuel so produced. The invention makes it possible to produce a biofuel, wherein 100% of the raw material stems from non-fossil sources.
Owner:UPM-KYMMENE OYJ
Method and apparatus for rapid biohydrogen phenotypic screening of microorganisms using a chemochromic sensor
InactiveUS6277589B1Microbiological testing/measurementVolume/mass flow measurementMicroorganismHydrogen
The invention provides an assay system for identifying a hydrogen-gas-producing organism, including a sensor film having a first layer comprising a transition metal oxide or oxysalt and a second layer comprising hydrogen-dissociative catalyst metal, the first and second layers having an inner and an outer surface wherein the inner surface of the second layer is deposited on the outer surface of the first layer, and a substrate disposed proximally to the outer surface of the second layer, the organism being isolated on the substrate.
Owner:ALLIANCE FOR SUSTAINABLE ENERGY
Method for separating acetic acid in fermentation liquid for biohydrogen production by bipolar membrane electrodialysis technique
InactiveCN101525285AIncrease productionAvoid inhibitionSemi-permeable membranesCarboxylic compound separation/purificationBiohydrogenPollutant emissions
The invention relates to a method for separating acetic acid in fermentation liquid for biohydrogen production by bipolar membrane electrodialysis technique. The invention solves the problem that the prior method for separating acetic acid has complex technology, low current efficiency, large energy consumption and long operation time. The method comprises a first step of circularly pumping the pre-treated fermentation liquid for biohydrogen production into a separation chamber of a bipolar membrane electrodialyzer; a second step of circularly pumping pure water or acetic acid solution into an enriched chamber of the bipolar membrane electrodialyzer; and a third step of circularly pumping Na2SO4 electrolyte with the mass concentration of 5% into an anode chamber and a cathode chamber, and performing bipolar membrane electrodialysis so as to accomplish the separation of acetic acid in fermentation liquid for biohydrogen production. The operation time in the invention is decreased by more than 80%, the technology is simple, a separation system is of closed cycling, no pollutant is discharged, and the method is green and environment-friendly. The removal rate of acetic acid in the invention is more than 85%, the recovery rate of acetic acid is more than 85-95%, the current efficiency is up to 60-70%, and the energy consumption is reduced.
Owner:HARBIN INST OF TECH
Fossil fuel-free process of lignocellulosic pretreatment with biological hydrogen production
InactiveUS20110136196A1Bioreactor/fermenter combinationsBiological substance pretreatmentsCelluloseMicroorganism
The invention provides an isolated haloalkaliphilic microorganism designated as strain sapolanicus belonging to the genus Halanaerobium, which is capable of producing hydrogen from biomass. Methods of producing biohydrogen comprising the fermentation of the microorganism with alkaline pretreated biomass are also provided. Fermentation is preferably carried out without neutralization of the pretreated biomass and at a pH of greater than or equal to about 10.
Owner:UNIVERSITY OF MISSOURI
Biohydrogen production by an artificial enzymatic pathway
The present invention comprises an in vitro enzymatic process that effectively converts renewable polysaccharides into high yields of hydrogen at mild conditions, using only enzymes and water. The process comprises a number of enzymes: (1) phosphorylases, (2) phosphoglucomutases, (3) hydrogenases, and (4) enzymes involved in the pentose-phosphate pathway. Preferred embodiments of the process produce only hydrogen and carbon dioxide as net products, translating into an inexpensive method of generating hydrogen in very large quantities from low-cost feedstocks.
Owner:VIRGINIA TECH INTPROP INC +1
Method of extracting butyric acid from a fermented liquid and chemically converting butyric acid into biofuel
Disclosed is a method of converting butyric acid contained in a fermentation broth into biofuel. This chemical conversion method includes separating biohydrogen from gases generated in the course of production of butyric acid through fermentation of carbohydrate, extracting butyric acid from the broth using an insoluble solvent, esterifying butyric acid thus producing butylbutyrate, and hydrogenolyzing all or part of butylbutyrate, thus obtaining butanol. Thereby, biobutanol can be efficiently and economically produced, and butylbutyrate, which has oxidation stability superior to that of conventional biodiesel (fatty acid methyl ester) and is thus regarded as novel biofuel, can be produced together.
Owner:SK INNOVATION CO LTD +1
Composite microbial agent for making low-rank coal to produce biogas and application thereof
ActiveCN110066742AStrong targetingThe role and effect are obviousFungiBacteriaBiohydrogenMicrobial agent
The invention belongs to the technical field of coal resource utilization, particularly relates to a composite microbial agent for making low-rank coal to produce biogas and discloses a preparation method and application of the composite microbial agent. The composite microbial agent is used for making the low-rank coal such as brown coal and low metamorphic soft coal (long flame coal, non-cakingcoal and slightly caking coal) produce the biogas; Angel distiller's yeast, Angel brewing high-activity dry yeast, Angel flavoring additive brewing composite functional bacteria, Gutian red yeast andacetic acid bacteria for vinegar are carefully selected as effective components to be precisely compounded; with the help of the synergistic effect of microorganisms in the composite microbial agent,specific chemical bonds of the low-rank coal are ruptured and dissociated, the low-rank coal is converted into environment-friendly low-carbon energy such as biomethane and biohydrogen by adopting corresponding functional groups, therefore, the low-rank coal can be effectively decomposed, on the condition of not adding external nutrient substances, high-carbon resource low-carbon conversion of thelow-rank coal is achieved, the yield of the biogas can be increased, the efficiency of converting the low-rank coal into clean energy is improved, and the biocatalysis efficiency is high.
Owner:INNER MONGOLIA UNIV OF SCI & TECH
Biological hydrogen production method and special strain thereof
InactiveCN101597587AImprove hydrogen production performanceRaise the ratio of control bacteriaBacteriaMicroorganism based processesBiotechnologyBiohydrogen
The invention discloses a biohydrogen production method and a special strain thereof. The special strain is a recombination strain which is obtained from introducing genes inciting anaerobic fermentation of the host strain into the hydrogen production host strain, positively correlating with the host strain anaerobic metabolism and containing the introduced genes. Proved by tests, the hydrogen production capability of the recombination strain is obviously improved compared with the hydrogen production capability of a contrast strain; therefore, the recombination strain and the biohydrogen production method of the invention have wide application prospect in biohydrogen production field and great significance for saving energy.
Owner:TSINGHUA UNIV
Method for removing CO2 from biohydrogen alkane gas by ionic liquid supported on graphene
ActiveCN108554141AIncrease the absorption reaction rateAbsorption balance time shortenedGas treatmentGaseous fuelsAlkaneReaction rate
The invention relates to an energy-saving environmental protection and CO2 emission reduction technology, and aims to provide a method for removing CO2 from biohydrogen alkane gas by ionic liquid supported on graphene. The method comprises the following steps of mixing ionic liquid [P66614][Triz] with anhydrous ethanol, adding the graphene, and stirring to obtain a liquid-solid mixed suspension; heating and evaporating to remove ethanol to obtain supported ionic liquid; loading into a fixed bed reactor, and introducing the biohydrogen alkane gas for chemical absorption reaction; desorbing thesupported ionic liquid which absorbs CO2 by heating to obtain CO2; recycling the regenerated ionic liquid for use. When the ionic liquid [P66614][Triz] is supported on the graphene with a high specific surface area, the absorption reaction rate of the ionic liquid to the CO2 in the biohydrogen alkane gas can be significantly increased, the rate of a mixed absorbent removing the CO2 is increased by20-70%, compared with the rate of pure ion liquid [P66614][Triz] removing the CO2, and the absorption equilibrium time is shortened by 20-40%.
Owner:ZHEJIANG UNIV
Method for preparing biological hydrogen by using traditional Chinese medicine residue
InactiveCN104817056AReduce contentAvoid generatingHydrogen separationHydrogen productionCycloneHydrogen
The invention provides a method for preparing biological hydrogen by using traditional Chinese medicine residue. The method comprises that: 1) traditional Chinese medicine residue enters a pyrolysis device, and air enters from the bottom portion of the pyrolysis device so as to make the traditional Chinese medicine residue be subjected to pyrolysis under a fluidized state; 2) the pyrolysis product enters a gasification bed, and gasification is performed by adopting water vapor and oxygen as gasification agents; 3) the gasification product enters a two-stage cyclone separation device to separate; 4) the gas being subjected to the cyclone separation is the gasified gas, and the gasified gas is sequentially purified through a venturi washing device, a washing tower, and a desulfurization tower; 5) the purified gasified gas sequentially passes through a reforming reactor, a high-temperature conversion reactor and a low-temperature conversion reactor so as to complete reforming and conversion; and 6) hydrogen purification is performed. The present invention provides the method for carrying out pyrolysis gasification on the traditional Chinese medicine residue so as to prepare the biological hydrogen. According to the present invention, the pyrolysis gasification of the traditional Chinese medicine residue is performed by using the double-bed system, the appropriate process parameters are controlled to avoid the generation of the tar in the gasification product, and the gasified gas is directly reformed and converted to prepare the biological hydrogen without cracking.
Owner:BEIJING GUOHUAN TSINGHUA ENVIRONMENT ENG DESIGN & RES INST CO LTD BEIJING CHINA +1
Fossil fuel-free process of lignocellulosic pretreatment with biological hydrogen production
InactiveUS8034592B2Bioreactor/fermenter combinationsBiological substance pretreatmentsCelluloseMicroorganism
The invention provides an isolated haloalkaliphilic microorganism designated as strain sapolanicus belonging to the genus Halanaerobium, which is capable of producing hydrogen from biomass. Methods of producing biohydrogen comprising the fermentation of the microorganism with alkaline pretreated biomass are also provided. Fermentation is preferably carried out without neutralization of the pretreated biomass and at a pH of greater than or equal to about 10.
Owner:UNIVERSITY OF MISSOURI
Apparatus for rapid biohydrogen phenotypic screening of microorganisms using a chemochromic sensor
InactiveUS20010041351A1Bioreactor/fermenter combinationsBiological substance pretreatmentsMicroorganismBiological body
Provided is a system for identifying a hydrogen gas producing organism. The system includes a sensor film having a first layer comprising a transition metal oxide or oxysalt and a second layer comprising a hydrogen-dissociative catalyst metal, the first and second layers having an inner and an outer surface wherein the inner surface of the second layer is deposited on the outer surface of the first layer, and a substrate adjacent to the outer surface of the second layer, the organism isolated on the substrate.
Owner:ALLIANCE FOR SUSTAINABLE ENERGY
Biological hydrogen production method for coupling coal seam microbial community and beet pulp waste
The invention discloses a biological hydrogen production method for coupling a coal seam microbial community and beet pulp waste. The biological hydrogen production method comprises the following steps: step 1, collecting coal seam microorganisms; step 2, sample pretreatment; 3, preparing a culture solution; step 4, flora enrichment culture; and 5, constructing a biological hydrogen production system to obtain hydrogen-rich gas. Microorganisms adopted in the method are original microorganisms in underground in-situ coal seam or ground coal-bed gas well drainage and mining water, sugar industry waste beet pulp is adopted as a hydrogen production substrate, and aiming at the bottlenecks of high strain cost, limited substrate applicability and the like in an existing biological hydrogen production technology, the coal seam microorganisms and sugar industry waste residues are coupled, so that the yield of hydrogen is increased. A low-cost hydrogen production system is constructed, so that the economic cost in the microbial hydrogen production process is reduced, and the beet pulp has the advantages of being safe, easy to obtain, low in cost and high in gas production rate, has the advantages of being easy and convenient to operate, economical, efficient, environmentally friendly and the like, and has a good industrial application prospect.
Owner:XIAN UNIV OF SCI & TECH
Fossil fuel-free process of lignocellulosic pretreatment with biological hydrogen production
The invention provides an isolated haloalkaliphilic microorganism designated as strain sapolanicus belonging to the genus Halanaerobium, which is capable of producing hydrogen from biomass. Methods of producing biohydrogen comprising the fermentation of the microorganism with alkaline pretreated biomass are also provided. Fermentation is preferably carried out without neutralization of the pretreated biomass and at a pH of greater than or equal to about 10.
Owner:UNIVERSITY OF MISSOURI
Method of extracting butyric acid from a fermented liquid and chemically converting butyric acid into biofuel
Disclosed is a method of converting butyric acid contained in a fermentation broth into biofuel. This chemical conversion method includes separating biohydrogen from gases generated in the course of production of butyric acid through fermentation of carbohydrate, extracting butyric acid from the broth using an insoluble solvent, esterifying butyric acid thus producing butylbutyrate, and hydrogenolyzing all or part of butylbutyrate, thus obtaining butanol. Thereby, biobutanol can be efficiently and economically produced, and butylbutyrate, which has oxidation stability superior to that of conventional biodiesel (fatty acid methyl ester) and is thus regarded as novel biofuel, can be produced together.
Owner:SK INNOVATION CO LTD +1
A BI-phasic solid-state anaerobic digester system for the generation of biogas with methane (BI-ADS≥90% ch4)
PCT designated stage expiredWO2025046627A1Water treatment parameter controlWater treatment compoundsCelluloseBiohydrogen
The present invention discloses a bi-phasic anaerobic digestion (AD) system [100] designed to produce biohydrogen, biohythane, and high-purity biogas with at least 90% methane content from various organic wastes, including lignocellulosic biomass. This system utilizes a single, closed, horizontal cylindrical reactor with two chambers: acidification chamber I and biomethanation chamber II. It facilitates high-pressure solid-state AD through optimal supplementation of nutrient nanoparticles and bioaugmented inoculum. The system's novel design, featuring a central duct, cones, and perforated plates, ensures efficient mixing and heat and mass transfer. The system can also generate biohythane, containing 15-25% hydrogen and 75-85% methane, by controlling the flow of gases between chambers. Additional features include micro-aeration to enhance hydrolysis, gravity settling chambers for slurry withdrawal, controlled gas passage between chambers to optimize methane production, and a programmable logic controller (PLC) for automated pH, temperature monitoring, and process control.
Owner:COUNCIL OF SCI & IND RES +1
Water treatment apparatus and water treatment process comprising high-efficiency biohydrogen production using microbial strain activated by magnetite carrier
PCT designated stage expiredWO2024248483A1BacteriaTreatment with anaerobic digestion processesMicroorganismBiohydrogen
According to an embodiment of the present invention, provided is a water treatment apparatus comprising a fermentation tank for receiving wastewater containing organic matter and decomposing the organic matter contained in the wastewater to produce hydrogen, wherein the fermentation tank comprises a microbial strain activated by a magnetite carrier. The water treatment process and apparatus according to the present invention can maintain high hydrogen production efficiency regardless of the environment in the fermentation tank, and thus are effective in the industrial production of biohydrogen.
Owner:KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
Removal of CO from biohydrogen gas by ionic liquid supported on graphene 2 Methods
ActiveCN108554141BIncrease the absorption reaction rateAbsorption balance time shortenedGas treatmentDispersed particle separationAlkaneAnhydrous ethanol
The invention relates to an energy-saving environmental protection and CO2 emission reduction technology, and aims to provide a method for removing CO2 from biohydrogen alkane gas by ionic liquid supported on graphene. The method comprises the following steps of mixing ionic liquid [P66614][Triz] with anhydrous ethanol, adding the graphene, and stirring to obtain a liquid-solid mixed suspension; heating and evaporating to remove ethanol to obtain supported ionic liquid; loading into a fixed bed reactor, and introducing the biohydrogen alkane gas for chemical absorption reaction; desorbing thesupported ionic liquid which absorbs CO2 by heating to obtain CO2; recycling the regenerated ionic liquid for use. When the ionic liquid [P66614][Triz] is supported on the graphene with a high specific surface area, the absorption reaction rate of the ionic liquid to the CO2 in the biohydrogen alkane gas can be significantly increased, the rate of a mixed absorbent removing the CO2 is increased by20-70%, compared with the rate of pure ion liquid [P66614][Triz] removing the CO2, and the absorption equilibrium time is shortened by 20-40%.
Owner:ZHEJIANG UNIV
An upflow anaerobic granular bed microbial electrochemical reactor [UAGB-MER] for production of bio-h 2 from liquid waste / wastewater
PCT designated stage expiredWO2025158463A1Water treatment parameter controlTreatment by combined electrochemical biological processesChemical oxygen demandPtru catalyst
In the present invention, an integrated bio-electrochemical reactor system (BEC) has been developed for the production of bio-hydrogen from wastewater (domestic / municipal wastewater) and simultaneous treatment of wastewater respectively. The developed BEC system intrinsically couples the upflow anaerobic granular bed (UAGB) with microbial- electrochemical reactor (MER) together into an advance bio-reactor which employs biocatalyst to convert chemical energy stored in organics to electrical energy. Hence, the developed novel UAGB-MER technology aims towards the enhancement of the metabolic activity of electrochemically active biocatalyst by supplying organic / inorganic nutrients, electron acceptors, or donors, thus stimulating oxidation or reduction of contaminants for simultaneous remediation of water and clean bio-Hydrogen (green H2) production. The present invention also relates to a process for treatment of organic enriched wastewater to significantly reduce high concentrations of BOD and COD from effluent stream.
![An upflow anaerobic granular bed microbial electrochemical reactor [UAGB-MER] for production of bio-h 2 from liquid waste / wastewater](https://images-eureka.patsnap.com/patent_img/23882150-49b8-42dd-87fd-b62b4d4d39e3/IN2025050078_31072025_pf_fp.png "An upflow anaerobic granular bed microbial electrochemical reactor [UAGB-MER] for production of bio-h 2 from liquid waste / wastewater")
Owner:COUNCIL OF SCI & IND RES
Low-emission generation of renewable biohydrogen and biomethane from organic waste
PendingUS20250353771A1Bioreactor/fermenter combinationsBiological substance pretreatmentsBiohydrogenWaste stream
There is disclosed a system, method and apparatus for generating renewable energy from common waste streams in a low-carbon manner. This system is modular and applicable to operations of a range of sizes. The system comprises a waste homogenization system; a feedstock preparation component involving dilution, nutrient adjustment, and mixing; a pretreatment tank; a hydrolysis tank; and an optional photosynthetic bioreactor. Through use of the system, organic waste is converted into biohydrogen (H2) and / or biomethane (CH4). The choice between producing each gas individually or in combination is controlled via selective treatment of the incoming waste.
Owner:ITILITY LLC
Biofilm reactor for sewage treatment system and hydrogen production
The invention belongs to the technical field of sewage treatment, and particularly discloses a bio-membrane reactor for a sewage treatment system and hydrogen production, the bio-membrane reactor comprises an ascending bed and a descending bed, the outlet end of the ascending bed is communicated with the descending bed through a first reactor which is inclined downwards, and the first reactor is communicated with the descending bed through a second reactor which is inclined downwards; the outlet end of the descending bed is communicated with the ascending bed through a second reactor which is inclined upwards to form a circulation loop of which the flowing direction is sequentially the ascending bed, the first reactor, the descending bed and the second reactor. By adopting the biofilm reactor for the sewage treatment system and hydrogen production, the hydrogen production performance of chemical substances in sewage is optimized by regulating and controlling a fluid circulation path and a fluidization speed through external voltage, and sewage purification and long-acting stable production of biological hydrogen are synchronously realized.
Owner:NORTH CHINA ELECTRIC POWER UNIV +1
A compound enzyme preparation and preparation method for producing clean energy from low-rank coal
The invention belongs to the technical field of coal resource utilization, specifically relates to a compound enzyme preparation for producing clean energy from low-rank coal, and further discloses a method for using low-rank coal to produce clean energy, so as to realize resource utilization of low-rank coal . The composite enzyme preparation for producing biomethane, biohydrogen or bioethanol from low-order coals according to the present invention uses protease, lipase, amylase, glucoamylase and pectinase as active ingredients for precise compounding, so that the low-order Coal (peat, lignite, low-metamorphic bituminous coal) breaks specific chemical bonds, dissociates corresponding functional groups, and converts them into biomethane, biohydrogen or carbon sources for microorganisms required for bioethanol conversion, and then obtains corresponding green low-carbon energy. The biodegradability of coal ensures the self-supply of nutrients required for microbial conversion of low-rank coal, so that low-rank coal can be transformed into high-carbon resources and low-carbon without adding exogenous nutrients.
Owner:INNER MONGOLIA UNIV OF SCI & TECH
Biohydrogen production by an artificial enzymatic pathway
The present invention comprises an in vitro enzymatic process that effectively converts renewable polysaccharides into high yields of hydrogen at mild conditions, using only enzymes and water. The process comprises a number of enzymes: (1) phosphorylases, (2) phosphoglucomutases, (3) hydrogenases, and (4) enzymes involved in the pentose-phosphate pathway. Preferred embodiments of the process produce only hydrogen and carbon dioxide as net products, translating into an inexpensive method of generating hydrogen in very large quantities from low-cost feedstocks.
Owner:VIRGINIA TECH INTPROP INC +1
Movable biological hydrogen alkane drying room
ActiveCN113280587ATake advantage ofAvoid accumulationDrying gas arrangementsDrying chambers/containersAlkaneThermodynamics
The invention discloses a movable biological hydrogen alkane drying room, which belongs to the technical field of power generation and comprises a straw fermentation device, a power generator and a drying room, wherein a first air outlet tube of the straw fermentation device communicates with an air inlet tube of the power generator. The drying room comprises a room body, a body, a first partition plate, a second partition plate and at least four guide plates, wherein a second air outlet tube of the power generator communicates with the room body, the body is installed in the room body, an airflow cavity is formed between the body and the room body, and the first partition plate and the second partition plate are installed at the two ends of the body. And the multiple guide plates which are spirally arranged are located between the first partition plate and the second partition plate. According to the movable biological hydrogen alkane drying room disclosed by the embodiment, the drying room is arranged behind a combustion room of the power generator; after hydrogen alkane is combusted in the power generator, airflow still having waste heat enters the airflow cavity between the room body and the body along the second air outlet tube, and the body can absorb heat in the airflow, so that moisture of objects in the body is dried, and therefore, the hydrogen alkane combustion heat is fully utilized.
Owner:HENAN AGRICULTURAL UNIVERSITY
Method and system for producing biomethane and ecological methane
InactiveCN106318417BReduce consumptionEmission reductionBiofuelsGasification processes detailsBiohydrogenEnvironmental engineering
Owner:BICARBO SP ZOO
Solid waste treatment and hydrogen production technology
The invention provides a solid waste treatment and hydrogen production technology. The technology pre-treats agricultural solid wastes by a chemical method and then uses known an anaerobic fermentation method to produce hydrogen. A chemical pretreatment process of agricultural solid waste includes: a, acidification: acidification of agricultural solid waste by adding hydrochloric acid; b. heating:direct heating or microwave heating of an acidified hydrochloric acid suspension containing agricultural solid waste; and c. neutralization: neutralization of the hydrochloric acid suspension after the heat treatment with a sodium hydroxide solution to make the hydrochloric acid suspension close to neutral. Biohydrogen production is then carried out using the known anaerobic fermentation.
Owner:宋智
Preparation of two-phase absorbent with ethylenediamine and dma for CO removal from biohydroalkanes 2 Methods
ActiveCN108178125BImprove removal rateAbsorption balance time shortenedProductsReagentsAlkaneCo2 removal
The invention relates to technologies of energy conservation and environmental protection as well as CO2 emission reduction, and aims to provide a method for removing CO2 from biological hydrogen alkane gas by a phase-changing solvent prepared from ethylenediamine and DMA (N,N-dimethylacetamide). The method comprises steps as follows: after being obtained from ethylenediamine and DMA through mixing, a liquid phase-changing solvent is sent into a spray decarbonization reactor, atomized, sprayed and subjected to countercurrent mixing with biological hydrogen alkane gas; solid precipitates produced through the reaction are subjected to solid-liquid two-phase separation with a liquid DMA solvent, and after gaseous phase products produced from the solid precipitates through heating decomposition are condensed and ethylenediamine is recovered, CO2 gas is collected and sent to a gas storage tank; the liquid DMA solvent obtained through separation, heating and condensation is recycled. With adoption of the novel solid-liquid phase-changing solvent prepared from ethylenediamine and DMA, the removal rate of CO2 in the biological hydrogen alkane gas is increased; compared with a traditionalalkylol amine aqueous solution EDA / H2O, the phase-changing solvent EDA / DMA has the advantages that the CO2 removal rate is increased by 15%-29%, the absorption balance time is shortened by 8%-20%, andCO2 absorption capacity is increased by 10%-21%.
Owner:ZHEJIANG UNIV
A kind of composite microbial bacterial agent for producing biogas from low-rank coal and its application
ActiveCN110066742BStrong targetingThe role and effect are obviousFungiBacteriaBiotechnologyBiohydrogen
The invention belongs to the technical field of coal resource utilization, in particular relates to a composite microbial bacterial agent for producing biogas from low-rank coal, and discloses its preparation method and application. The compound microbial bacterial agent used in the production of biogas from low-rank coals such as lignite and low-modified bituminous coal (long-flame coal, non-sticky coal, and weakly sticky coal) according to the present invention is selected from Angel Brewing Koji and Angel Brewing High Activity Dry yeast, Angel Xiangba brewing complex functional bacteria, Gutian red yeast rice and acetic acid bacteria for vinegar are precisely compounded as active ingredients, and the specific chemical bonds of low-rank coal are broken and dissociated with the help of the synergistic effect of the complex bacteria and microorganisms , and use the corresponding functional groups to convert into green low-carbon energy such as biomethane and biohydrogen, which can effectively degrade low-rank coal, and realize low-carbon conversion of high-carbon resources and low-carbon resources of low-rank coal without adding exogenous nutrients , help to increase the gas production of biofuels, improve the efficiency of converting low-rank coal into clean energy, and have high biocatalytic efficiency.
Owner:INNER MONGOLIA UNIV OF SCI & TECH
System and method for producing green hydrogen by coupling catalytic pyrolysis of biomass with volatile chemical looping reforming
The present application relates to the field of biomass high-value conversion, and particularly relates to a biomass catalytic pyrolysis coupling volatile chemical chain reforming green hydrogen system and method, which comprises a catalytic pyrolysis reaction unit, a reduction reaction unit, an oxidation reaction unit and a hydrogen gas purification unit, the reduced oxygen carrier is sent into the catalytic pyrolysis reaction unit, and the catalytic pyrolysis of biomass is catalyzed by using the catalytic effect of the reduced oxygen carrier, which can not only promote the in-situ precipitation of biological hydrogen, realize the catalytic upgrading of volatile macromolecules, and improve the content of light components, but also provide more easily converted hydrogen production raw materials for the reduction reaction in the subsequent reduction reaction unit. Moreover, the biological oxygen in the volatile macromolecule is in-situ migrated to the oxygen carrier lattice during the catalytic upgrading process, realizing the primary recovery of the oxygen carrier lattice oxygen, converting the low-value biological oxygen into controllable released lattice oxygen, thereby reducing the reaction temperature and realizing the efficient production of green hydrogen, and solving the problems of low conversion rate and high oxygen content in the volatile in the existing biomass chemical chain gasification technology.
Owner:XI AN JIAOTONG UNIV
Combination of zeolite upgrading with hydrogenation upgrading to produce renewable gasoline from biomass
ActiveUS8993818B2Low vapor pressureReduce cokingMolecular sieve catalystsHydrocarbon by hydrogenationAlkaneParaffin wax
Technologies to convert biomass to liquid hydrocarbon fuels are currently being developed to decrease our carbon footprint and increase use of renewable fuels. Since sugars / sugar derivatives from biomass have high oxygen content and low hydrogen content, coke becomes an issue during zeolite upgrading to liquid hydrocarbon fuels. A self-sustainable process was designed to reduce the coke by co-feeding sugars / sugar derivatives with the paraffin products from hydrogenation of sugars / sugar derivatives. Paraffins without complete conversion result in products with less aromatics and relatively low density compared with the products directly from zeolite upgrading. Thus, the process is more economically favorable.
Owner:PHILLIPS 66 CO