46 results about "Hydrothermal liquefaction" patented technology

The embodiment of the application discloses a nitrogen content prediction method, a program product, an equipment and a storage medium, comprising: obtaining experimental data of each biomass raw material under each hydrothermal liquefaction reaction condition, and constructing a data set according to the experimental data; performing cluster analysis on the data set based on the element composition of the raw material and the organic composition of the raw material to obtain each sub-data set corresponding to the data set; performing data enhancement on each sub-data set according to a predetermined random disturbance to obtain each enhanced sub-data set, and determining a model training data set according to each enhanced sub-data set; training a predetermined initial nitrogen migration and conversion prediction model based on the model training data set to obtain a target nitrogen migration and conversion prediction model. The application constructs a nitrogen migration and conversion prediction model suitable for small sample and high heterogeneity data conditions. The prediction accuracy and generalization ability of the target nitrogen migration and conversion prediction model are improved.

The present disclosure relates to a continuous biomass hydrothermal liquefaction reaction intelligent control method and system, comprising: real-time monitoring of biomass feed solid content and feed flow rate by mass flow meter, dynamic adjustment of feed flow rate by feed pump frequency converter combined with pre-input material characteristic parameters, control of reaction residence time; based on real-time sampling data and feed flow rate, dynamic adjustment of reaction temperature and reaction pressure by prediction model, and adjustment of discharge valve opening to optimize reaction residence time; real-time monitoring of flow rate, regulating valve opening, separation temperature, separation pressure and liquid level of gas-liquid separation buffer tank and solid-liquid separation buffer tank, automatic adjustment of regulating valve opening according to separation pressure of gas-liquid separation buffer tank and solid-liquid separation buffer tank, and staged recovery of heat by three-stage cooler; judging whether the current key parameters exceed the warning value, if yes, triggering an emergency alarm signal and emergency process. The present disclosure improves the intelligence and safety of the continuous biomass hydrothermal liquefaction reaction process.

Systems and methods of producing biocrude oil include a well having a depth, a top positioned at surface, a bottom portion positioned at a subterranean location, the well comprising casing and tubing positioned therein, forming an annulus. The casing and tubing define a hydrothermal liquefaction (HTL) reaction zone in a bottom portion of the well and a heat transfer and separation zone above the HTL reaction zone. The well includes a cable having an electric heating element positioned in the tubing in the HTL reaction zone configured to transfer energy to biomass slurry flowing through the tubing, converting some of the biomass slurry into biocrude oil by HTL. The well depth and the electrical heating element are sized to produce temperature and pressure in the HTL reaction zone sufficient to form sub-critical water and produce a product fluid comprising the biocrude oil.

The present application relates to the technical fields of hydrothermal liquefaction, and discloses an electrode reaction kettle, which comprises a reaction kettle cavity, a drain port arranged at the bottom of the reaction kettle cavity, a cavity cover arranged at the top of the reaction kettle cavity, and a feed inlet, a liquid inlet, an air inlet and an exhaust port arranged on the cavity cover; and a plasma device fixed to the reaction kettle cavity and / or the cavity cover, which is used to discharge electricity into the reaction kettle cavity to generate plasma. The present application does not involve the use of catalysts, is green and environmentally friendly, and is used for plastic degradation without involving the use of a large amount of catalysts, thus avoiding the phenomenon of subsequent separation and purification difficulties. The electrode reaction kettle can realize the plasma electrolytic degradation of plastics, and the operation process is simple and suitable for industrial production.

This invention discloses a method for preparing a composite flotation reagent using biomass hydrothermal liquefaction products, comprising the following steps: Raw material preparation: providing biomass raw materials rich in lipids or proteins; Catalytic hydrothermal liquefaction: placing the biomass raw materials and a composite catalyst in a reactor, reacting at a temperature of 250-350℃ and a pressure of 4-20 MPa, wherein the water content of the biomass raw materials is 70-95%, and the composite catalyst contains alkaline components, metal oxide components, and rare earth element components; Product separation: separating the reaction products into oil and water to obtain bio-crude oil containing amphiphilic molecules; Flotation application: applying the bio-crude oil as a composite flotation reagent to mineral flotation, where the bio-crude oil simultaneously functions as a frother and a collector. This invention uses waste biomass as raw material to prepare a composite flotation reagent with both frother and collector functions, realizing the resource utilization of waste and the green upgrading of flotation reagents, and has the characteristics of wide raw material sources, excellent reagent performance, and environmental friendliness.

The invention discloses a net zero-carbon solar-driven high-quality bio-fuel oil production system, and relates to the technical field of biomass energy conversion. The system comprises: a hydrothermal liquefaction reactor for a hydrothermal liquefaction reaction of biomass; the photovoltaic electric heating device is used for heating the reactor; the solar molten salt device is used for heat preservation of the reactor; the waste heat recovery device is connected with an outlet of the reactor to recover waste heat; the separation device is connected with an outlet of the waste heat recovery device and used for separating biological crude oil and organic wastewater; the biological hydrogen production device is used for producing hydrogen by utilizing wastewater photosynthesis; the hydrogenation upgrading device is used for producing biological fuel oil by using biological crude oil and hydrogen; and the controller is in communication connection with each device. Through solar heat supply and photosynthetic biological hydrogen production, dual dependence on fossil energy is avoided, and net zero carbon emission of a high-quality biofuel production whole chain is achieved.

A waste stream of organic matter such as sewage, plant and plastic matter is received for recycling and treated with high temperature and pressure to generate useful organic products such as bio-oil and gas. Byproducts such as char and an aqueous phase including water can be selectively recycled or beingly discarded. An oxidant added to a reactor containing waste from the waste stream facilitates an autothermal reaction under the temperature and pressure applied to the reactor, boosting the temperature slightly from the reactions therein. The reactor generates useful hydrocarbons such as bio-oil resulting from disruption of organic bonds. A combination of oxidation and radical initiation results from the oxidant and / or radical initiators, and provides an increased yield of bio-oil and substantially pure aqueous phase. A stoichiometric quantity of the oxidant limits complete conversion of carbon into carbon dioxide by limiting available oxygen and therefore favoring hydrocarbon formation.

The present invention provides an improved hydrothermal liquefaction process for managing and sequestering PFAS contaminants in waste materials.

This invention belongs to the field of hydrothermal liquefaction technology and discloses a method for CO2-promoted hydrothermal liquefaction demulsification and separation of rolling mill sludge. The method involves weighing rolling mill sludge into a high-pressure reactor, adding water, and introducing sufficient carbon dioxide gas to purge air from the reactor. A hydrothermal liquefaction reaction is then carried out, and the liquid phase product in the high-pressure reactor is collected and washed with acetone. The washing liquid and the liquid phase product in the high-pressure reactor are then vacuum filtered together. After washing the filter residue with acetone, a filtrate and a filter residue are obtained. The filter residue is dried to obtain the solid phase product of the reaction. Dichloromethane is added to the filtrate, and after thorough stirring and extraction, the liquid is separated. The upper layer is an aqueous solution, and the lower layer is a mixed solution of acetone, dichloromethane, and bio-oil. Rotary evaporation is used to remove the organic solvent from the oil phase mixture, yielding the oil phase. This invention improves the oil phase separation efficiency and calorific value of rolling mill sludge by using CO2 as a reaction atmosphere during the hydrothermal liquefaction process.

The invention provides a method for modifying thickened oil by utilizing a biomass hydrothermal liquefaction water-phase byproduct, and relates to the technical field of petroleum processing. The method provided by the invention comprises the following steps: mixing the biomass hydrothermal liquefaction water-phase byproduct and the thickened oil to form a reaction system, and carrying out hydrothermal cracking reaction to obtain the modified oil, the mass ratio of the biomass hydrothermal liquefaction water-phase byproduct to the thickened oil is (3-8): 10, the hydrothermal cracking reaction temperature is 200-320 DEG C, and the hydrothermal cracking reaction time is 6-30 hours. The hydrothermal liquefaction water-phase byproduct is used as a conversion water source for the hydrothermal cracking reaction of the thickened oil, active hydrogen upgrading is provided for the modification of the thickened oil, the viscosity reduction and modification of the thickened oil are realized, meanwhile, the treatment cost of wastewater generated when the target product bio-oil is prepared through the hydrothermal liquefaction reaction of the biomass is reduced, and the economic benefit is improved.

Provided is a method for producing an oil comprising feeding an olefin-based resin into a reactor, converting the olefin-based resin into an oil by thermal degradation reaction, and recovering the produced oil, wherein the olefin-based resin is a low molecular weight (LMW) olefin-based resin. The LMW olefin-based resin comprises a molecular weight of less than 50,000 g / mol, preferably less than 40,000 g / mol measured according to ISO 16014-4. In an embodiment, method comprises a further step of cracking a higher molecular weight (HMW) olefin-based resin to produce the LMW olefin-based resin. Also provided are an oil produced according to the method and a use of the oil for as a feedstock for production of olefin-based resins. In the examples, a Hydrothermal liquefaction (HTL) process, which uses super-critical water as reaction media, is used for the thermal degradation reaction.

The invention relates to the technical field of biomass resource utilization, and discloses a multi-modal fusion feeding device for continuous hydrothermal liquefaction, which comprises a pretreatment and supply unit for mixing a biomass raw material with water to form slurry; a feeding hole of the active cyclone centrifugal separation unit is connected with the pretreatment and feeding unit, and the active cyclone centrifugal separation unit is used for receiving the slurry and separating the slurry into solid-containing underflow and purified overflow under a centrifugal force field. According to the multi-mode fusion feeding device and method for continuous hydrothermal liquefaction, an active rotational flow centrifugal separation unit is adopted to replace traditional gravity sedimentation, solid particles are efficiently separated through centrifugal force, the separation state is mastered in real time through ultrasonic monitoring, and the depth of an overflow pipe is dynamically adjusted through an intelligent controller. According to the mode, fine particles and light fibers which are difficult to treat in a traditional method are effectively removed, meanwhile, solids are continuously discharged along with underflow, accumulation and shutdown cleaning are avoided, and efficient and continuous slurry purification is achieved.

Provided is a method for preparing a transportation fuel from a hydrothermal liquefaction produced bio-crude oil. A hydrothermal liquefaction produced bio-crude oil is subjected to distillation to obtain a purified bio-oil and a distillation residue; the purified bio-oil is subjected to hydrocracking to obtain a cracked bio-oil; the cracked bio-oil is subjected to catalytic hydrogenation to obtain a refined bio-oil; and the refined bio-oil is subjected to fractionation to obtain a transportation fuel.

The present application relates to a kind of paper plastic aluminum packaging waste resource utilization system and method, its system includes water supply unit, material pretreatment unit, reactor, electromagnetic induction heater and three-phase separator, wherein water supply unit is connected with reactor, material pretreatment unit is connected with the feed inlet of reactor, condensing coil is arranged in the interior of reactor and is connected with water supply unit to form cooling water supply circuit, electromagnetic induction heater is arranged in the middle and lower part of reactor;The feed inlet of three-phase separator is connected with the discharge port of reactor.The system uses hydrothermal liquefaction method to process paper plastic aluminum packaging waste, realizes the in-situ online synthesis of high-quality bio-oil, and recycles high-value-added hydrated alumina;While reducing energy consumption and pollution emissions, resource utilization efficiency is significantly improved.The present application is green and environmentally friendly, avoids the use of organic solvents or high-acidity separating agent in traditional recycling methods, reduces secondary pollution;By-product hydrogen can be used as clean energy, and carbon emissions are reduced.

The application discloses a recycling method of tobacco waste powder extraction waste residue, comprising the following operation steps: S1, first, tobacco essential oil is extracted from tobacco waste powder by using a supercritical carbon dioxide extraction method, and extraction waste residue is collected; S2, the collected extraction waste residue is mixed with an alkaline solution, and then poured into a high-pressure reaction kettle to perform a hydrothermal carbonization reaction; S3, after the reaction kettle returns to a normal temperature and pressure state, the product in the reaction kettle is poured out and filtered and dried, the obtained solid product is biochar, and the liquid product is collected and stored in a specific anaerobic cool environment for a period of time, and then organic fertilizer is obtained. The method can realize effective recycling of tobacco waste by using hydrothermal liquefaction to process the waste residue after supercritical extraction of the tobacco waste powder.

The invention discloses a blue leather scurf recovery treatment method and system, a complete'pretreatment-hydrothermal conversion-precise separation-product conversion 'is constructed, chromium is removed through front-end pretreatment, meanwhile, the quality of product bio-oil obtained after hydrothermal liquefaction is improved, waste gas is discharged after reaching the standard after being subjected to high-temperature combustion treatment, secondary pollution is avoided, and the blue leather scurf recovery treatment method and system are suitable for industrial production. According to the method, slurry is subjected to multi-stage thermal reaction, four-phase products are generated, the reaction efficiency is improved, the four-phase products are separated, bio-oil, chromium slag, a water-phase product and combustible gas are obtained, reactants are sequentially treated to achieve different purposes, secondary pollution to the outside can be reduced, the energy utilization efficiency can be improved, and the method is suitable for industrial production. According to the method, synergistic improvement of environmental benefits and economic benefits is achieved, and an optimal solution is provided for resourceful treatment of the blue leather scrap waste.

The present technology integrates multiple technologies to substantially reduce the economic and environmental cost of managing municipal solid waste (MSW) and the biomass growth in forests or rangelands. The technology employs rotary kiln gasification of MSW to generate steam, renewable electrical energy, and an inorganic sintered ash suitable for a variety of uses. Net electrical power from the power plant is used to operate a pyrolysis system or a hydrothermal liquefaction unit that converts wood biomass to liquid hydrocarbon fuels. A carbon capture and utilization system uses CO2 recovered from the power plant exhaust stack to generate a variety of fuels and / or specialty chemicals. Steam from the power plant is used to make activated carbon from the char residue from pyrolysis. Revenue from the technology includes gate fees for MSW diverted from landfill, renewable electrical power to the grid, a variety of liquid hydrocarbon fuels and activated carbon.

The disclosure relates to processes of combining algae and waste feedstocks comprising digestate or food waste for the production of bio-oil via hydrothermal liquefaction. The disclosure further relates to bio-oil and sustainable fuels such as sustainable aviation fuel derived from said processes, as well as systems for producing bio-oil.

The invention provides a two-section organic solid wastewater thermal liquefaction method and equipment, and relates to the field of organic garbage treatment equipment.The equipment comprises a reaction tank, fixed teeth are fixed to the upper end of an inner cavity of the reaction tank, a sleeve tooth cylinder is sleeved with the fixed teeth, a long pipe is fixed to the outer surface of the sleeve tooth cylinder, and a hollow ball is fixed to the lower end of the long pipe; a connecting rod is sleeved with the hollow ball, an inserting rod is fixed to the upper end of the connecting rod, an inserting opening cylinder is sleeved with the upper end of the long pipe, the other end of the inserting rod extends into the inserting opening cylinder, and movable teeth corresponding to the fixed teeth are annularly fixed to the outer surface of the inserting opening cylinder at equal intervals. By rotating the arc-shaped scraping block, the arc-shaped scraping block not only can scrape organic fertilizer deposited on the bottom surface of the reaction tank, but also can extrude grease in the organic kitchen waste fertilizer, so that the problems that a large amount of grease in the organic kitchen waste fertilizer after reaction cannot be discharged and kitchen waste slurry is deposited at the bottom and cannot react better at present are solved.

A process where a liquid or supercritical CO2 co-solvent is used in a hydrothermal liquefaction (HTL) process. The process improves yield of the HTL process.

A process (PHP) for hydrothermal liquefaction of a PUR-containing waste feedstock (WFT) is disclosed, the process comprising the steps of providing (PPF) the PUR-containing waste feedstock (WFT), the PUR-containing waste feedstock (WFT) comprising polyurethane, wherein at least 30% by weight of said polyurethane is polyether polyol-based polyurethane, subjecting the PUR-containing waste feedstock (WFT) to hydrothermal liquefaction (HTL) to obtain a HTL output stream (OPS), separating (SEP) polyether polyol (PEP) from the HTL output stream (OPS). Also, a system for decomposing PUR-containing waste feedstock is disclosed.

The present application relates to the technical field of hydrogenation reactor, in particular to a liftable biomass crude oil extraction liquid separation coupling catalytic hydrogenation reactor, which realizes the volume change of the reactor through a lifting driving device, and couples the separation of the hydrothermal liquefaction biomass crude oil extraction liquid and the catalytic hydrogenation upgrading process of the bio-crude oil. The packing seal structure sealing cover is arranged on the top port of the reactor cylinder, which improves the sealing in the reactor cylinder. The biomass crude oil extraction liquid is connected into the reactor cylinder through the inlet, and the plunger structure can be driven to move upward in the reactor cylinder by the lifting driving device, so as to increase the volume in the reactor. The reactor cylinder is heated by the heating assembly, so that the organic solvent (dichloromethane) in the extraction liquid can be evaporated conveniently, and the dichloromethane vapor can be removed from the upper outlet of the reactor cylinder to realize collection.

The application relates to a method for resourceful treatment of waste wind turbine blades, and relates to the technical field of solid waste resourceful treatment. In order to solve the problem of low resource utilization rate of wind turbine blades, the method comprises blade crushing, screening and washing. The wind turbine blade fragments are put into a hydrothermal liquefaction reactor, water is added at a mass ratio of the fragments to the water of 1:5-1:20, the temperature in the hydrothermal liquefaction reactor is gradually increased to a subcritical temperature, the pressure is increased to the saturated steam pressure at the temperature, the temperature and pressure state is maintained for 20-40 minutes, and the mixture is stirred during the period; the temperature of the mixture in the hydrothermal liquefaction reactor is slowly increased to a supercritical temperature, the pressure is increased to the pressure value in the supercritical state, the temperature and pressure state is maintained for 30-60 minutes; the product is cooled and separated and recovered, the temperature of the mixture in the hydrothermal liquefaction reactor is gradually reduced to a discharge temperature, and the gaseous phase, the liquid phase and the solid phase products after cooling are collected respectively; and fiber reinforced concrete is prepared. The application has the effects of harmless treatment and resource utilization.

The present invention relates to a method for use in a biogas plant having at least one digester (12) and a thermal treatment unit (50), the method comprising the steps of : a ) anaerobically digesting an organic biomass (18) in at least one digester (12) through microorganisms at a temperature below 50 ° C to produce methane-containing biogas (16) and a digestate (14); b) removing a major fraction (32) of the digestate (14) from the digestion process after a fast retention time t and subjecting at least part of said major digestate fraction (32) to a thermal treatment in a thermal treatment unit (50) at a temperature above 175 ° C for at least one minute, wherein the thermal treatment step involves at least one treatment selected from the group consisting of pyrolysis, torrefaction, gasification, hydrothermal gasification, hydrothermal carbonization and hydrothermal liquefaction; and c ) retrieving a minor fraction (34) of the digestate (14) from the digestion process after an inoculum retention time T that is longer than the fast retention time t, returning said minor digestate fraction (34) into the digestion process and mixing the minor digestate fraction with the organic biomass (18) within the digester (12).

The invention belongs to the technical field of preparation of biomass energy from high-nitrogen-content organic solid waste, and particularly relates to a method for preparing high-yield low-nitrogen biomass oil based on organic component regulation and control of algal mud co-hydrothermal liquefaction, and the method comprises the following steps: S1) carrying out alkali thermal hydrolysis pretreatment on waste algal mud, and then carrying out solid-liquid separation to obtain a low-nitrogen algal mud solid; and S2) taking an Fe-Co loaded modified molecular sieve as a catalyst, enabling the low-nitrogen algae mud solid to be in contact with the lipid-rich waste biomass, and performing co-hydrothermal liquefaction reaction to obtain the low-nitrogen biomass oil. Through the organic combination of the technical scheme, the key problem in the oil preparation process by algae mud hot liquefaction is solved synergistically, the source nitrogen reduction is obvious, the biomass oil yield is improved, the nitrogen migration path is optimized, and the high-quality low-nitrogen biomass oil product is obtained.

This invention discloses a method and system for regulating nitrogen-containing heterocyclic compounds in biomass hydrothermal liquefaction. The method for regulating the nitrogen-containing heterocyclic content in biomass includes acquiring a first dataset and a second dataset. The first dataset includes the elemental composition, hydrothermal liquefaction conditions, and nitrogen-containing heterocyclic content of a first biomass, while the second dataset includes the elemental composition of a second biomass to be regulated. Based on the first dataset and a pre-built initial machine learning model, a trained machine learning model and its output are obtained, including the highest nitrogen-containing heterocyclic content, the corresponding feature value, and the corresponding feature weight value. Based on the second dataset, the feature value corresponding to the highest nitrogen-containing heterocyclic content, and the corresponding feature weight value, the second biomass is regulated to obtain the regulated nitrogen-containing heterocyclic content of the second biomass, thereby improving the prediction accuracy and regulation effect of nitrogen-containing heterocyclic content.

The invention discloses an ectopic catalysis hydrothermal liquefaction device and a working method thereof, belongs to the technical field of catalysts, and solves the problems of difficulty in catalyst recovery, low product purity and non-uniform catalytic contact in a hydrothermal reaction. The device comprises a hollow cylinder, a plurality of micropores are formed in the cylinder wall of the hollow cylinder, a gas control mechanism is installed on the hollow cylinder, and the gas output end of the gas control mechanism is communicated with the interior of the hollow cylinder and used for conducting negative pressure pumping or pressure relief on the interior of the hollow cylinder; a bracket connected with a stirring mechanism in the hydrothermal reactor is also mounted on the hollow cylinder; the device can realize accurate amount control and efficient recovery of the catalyst, improves the catalysis uniformity and the product purity, is convenient to disassemble and assemble, is adaptive to the existing hydrothermal reactor, can be recycled, and reduces the reaction cost.

A system for converting a biomass into a biofuel including a biomass processing station arranged to receive the biomass from a biomass harvester, output the biomass to a hydrothermal liquefaction (HTL) converter, and receive a processed biomass from the HTL converter. The system includes a conduit arranged to transport the biomass from the biomass processing station to the HTL converter and transport the processed biomass from the HTL converter to the biomass processing station. The HTL converter includes a heat exchanger arranged to transfer thermal energy from a geothermal heat source to the biomass to convert the biomass into the processed biomass. The system also includes a controller arranged to monitor conditions of the biomass at locations along the conduit and adjust operations of components along the conduit to, thereby, adjust the conditions of the biomass at one or more locations along the conduit.

The application discloses a kind of processing traditional chinese medicine residue's tubular continuous hydrothermal liquefaction oil preparation process, it is related to chemical production technical field.The processing traditional chinese medicine residue's tubular continuous hydrothermal liquefaction oil preparation process, the tubular reactor includes heat exchange shell, the heat exchange shell bottom is close to left end and is provided with drainage, the heat exchange shell bottom is close to right end and is provided with liquid inlet, the heat exchange shell is internally provided with reaction mechanism, the heat exchange shell is internally provided with flow increasing mechanism, the reaction mechanism includes discharge pipe.The processing traditional chinese medicine residue's tubular continuous hydrothermal liquefaction oil preparation process, by spiral pipe rotation, simultaneously make its inner wall vibrate, can push the reactant in spiral pipe inside, in this process, spiral pipe inside slurry particle continuously flushes, wipes pipe wall, simultaneously vibration can reduce lignin and the attachment contact of spiral pipe inner wall, lignin high temperature is not easy to adhere coking, need not frequent shutdown, improve the effect of reaction.