2923results about "Solid fuels" patented technology

A method for thermal treatment and chemical transformation of waste comprising carbonaceous materials for generation of a fuel gas or methanol, and for processing solid particles using a cyclonic particle separator, comprising adjusting the humidity of the materials, introduction into thermolysis reactor(s), introduction into a conversion unit, causing gasification of solid carbonaceous material, introducing the solid rest into char handling unit for further treatment in a cyclonic particle separator.

The present invention relates to (1) a method for producing biochar having bio stimulating effects, (2) biochar that has been produced to having increased bio stimulating effects, (3) a method for capturing material extracted from biochar and (4) biochar extracts, comprising desired compounds extracted from biochar and suspended in an extract solution. The methods above all involve obtaining a particular biomass source and pyrolyzing the biomass source under specific conditions to increase the bio stimulating effects of the biochar. The method for capturing the material extracted from the biochar produced to have such stimulating effects includes contacting the biochar with a treating liquid, separating the biochar from the biochar extract, collecting the biochar extract from which the biochar has been separated and resuspending the biochar extract in an modified aqueous solution for further use and / or processing separate from, or prior to, disposal. The biochai" extract suspended in solution then includes desired compounds (a) at least 0.1 ppm of one or more of the following phenylpropanoid, phenylalanine, flavonoids, sterols, terpenes, terpenoids, tannins, coumarins, benzaldehydes and phenols; (b) at least 0.1 g / L of humics, fulvics or a combination of both humics and fulvics and / or (c) one or more of the following salicylic acid, jasmonic acid, abscisic acid, cytokinin, gibberellic acid and ethylene, by way of example.

Production systems and methods for producing pellets or pellet products, which can be used, e.g., in an electric arc furnace (EAF) to produce metal alloys, are disclosed herein. In some embodiments, a method for forming coke pellets includes (i) blending biomass with a set of materials to form an input blend, (ii) preconditioning the input blend by hydrating the input blend to generate a first plurality of particles, (iii) charging the first plurality of particles into an oven to produce a second plurality of particles via pyrolysis, (iv) post-conditioning the second plurality of particles to produce a third plurality of particles by exposing the second plurality of particles to at least one of an amphipathic binder, a hydrophobic binder, or a hydrophilic binder, and (v) physically altering the third plurality of particles to form coke pellets. The biomass can have a first volatility and the set of materials can have a second volatility lower than the first volatility.

Methods and systems for coking coal blends to produce foundry coke products are disclosed herein. Methods for producing coke products can include charging a coal blend into a coke oven; and heating the charged coal blend such that a crown temperature of the coke oven is greater than a lower bound coking temperature. The pyrolysis duration begins when the crown temperature of the oven is greater than the lower bound coking temperature, and ends when the crown temperature of the oven is less than the lower bound coking temperature.

The invention relates to the technical field of municipal sludge treatment, in particular to a method for recycling nitrogen and phosphorus elements from municipal sludge. According to the method, the municipal sludge is subjected to hydrothermal carbonization treatment, the treated solid-phase product is dried and ground to a specific particle size, the solid-phase product is subjected to acid leaching under a specific condition to extract the phosphorus element, and then heavy metal and metal elements such as Al and Fe in the acid leaching liquid are removed by adopting strong-acid ion exchange resin and a chemical precipitant, so that the phosphorus element is obtained. And finally, mixing the struvite with a hydrolyzate which is subjected to hydrothermal carbonization treatment and is rich in ammonia nitrogen, and precipitating by adjusting the element proportion and the pH value to obtain a solid-phase product struvite crystal. According to the method, external nitrogen-containing substances do not need to be added, the content of heavy metal in the solid-phase product struvite can be effectively reduced, the recovery rate of phosphorus can reach 93% or above, the recovery rate of ammonia nitrogen can reach 63% or above, the recovery rate of nitrogen and phosphorus is high, energy consumption is low, and the treatment cost is low.

The invention discloses a vertical circular mould biomass granulator which comprises a rack, the rack is formed by welding a bottom plate and a top plate, the left side of the top end of the bottom plate of the rack is fixedly connected with a mounting seat through a column body, the top of the mounting seat is provided with a grinding disc, and the top of the mounting seat is further provided with a circular mould mechanism. The circular mold mechanism is arranged, the circular mold mechanism is composed of a plurality of circular mold pieces, the circular mold mechanism is provided with two granulation hole sets, in the production process, if the lower granulation hole set is damaged, the circular mold mechanism can be turned over through matched use of the lifting mechanism and the turnover mechanism, the granulation hole set originally located on the upper portion is turned over to the lower portion, and therefore the circular mold mechanism can be turned over. Compared with the prior art, the circular mold mechanism can be replaced without manual operation of workers, continuous production is guaranteed, if a certain circular mold part is damaged, the whole ring-shaped circular mold mechanism is replaced in a traditional mode, only the circular mold part needs to be replaced, resources are saved, and waste is avoided.

To provide a hydrogen production system that can perform aqueous reaction to superheated steam by utilizing high-temperature gas exhausted from a carbonization furnace.SOLUTION: A hydrogen production system 1 that hydrolyzes biomass into pellets by using a continuous-type subcritical water comprises: a carbonization furnace 3 which incompletely burns and carbonizes pellets; a carbonization rate measuring device 31 which measures a ratio of carbide; a superheated steam generator 4 which generates superheated steam; a thermal decomposition furnace 5 which generates thermally decomposed gas; a water gas recovery device 6; and a control device 90, where the carbonization furnace 3 has: an input port 301a into which pellets are input; a housing part 301 which houses the input carbide; an exhaust port 301b which exhausts carbide created by carbonizing pellets; and a carbonization degree evaluation part 313 which evaluates a carbonization degree of the created carbide, where a control device 90 controls an atmospheric temperature inside the housing part 301 such that a ratio of the carbide measured by the carbonization rate measuring device 31 and a carbonization degree evaluated by the carbonization degree evaluation part 313 become constant.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of inhibitors, and provides a temperature-controlled targeted release composite inhibitor and a preparation method and application thereof. The preparation method comprises the following steps: carrying out a neutralization reaction on an acrylic acid solution, cellulose, acrylamide and water to obtain an intermediate solution, carrying out a polymerization reaction on an initiator, a cross-linking agent and the intermediate solution to obtain water-absorbing gel, and soaking the water-absorbing gel into an aqueous solution of an antioxidant for adsorption. The temperature-controlled targeted release composite stopping agent is composed of water-absorbing gel (a physical stopping agent) and an antioxidant (a chemical stopping agent), the water-absorbing gel is of a three-dimensional network structure, cellulose in the water-absorbing gel contains a large number of water-absorbing groups, a solution containing the antioxidant can be wrapped in the three-dimensional network structure, and the stability of the antioxidant is effectively improved; the water-absorbing gel can play roles in physical cooling and fire extinguishing, and is a biodegradable material; along with the rise of the temperature, the water-absorbing gel slowly releases the antioxidant, so that the effect of continuously inhibiting spontaneous combustion of the coal is exerted.

High quality coke products including unique properties, such as Coke Reactivity Index (CRI) properties, fixed carbon content, and sulfur content.

The invention relates to the technical field of catalysts, in particular to a catalyst for fire coal and a preparation process thereof, and the catalyst comprises the following materials in parts by weight: 2-8% of rare earth nitrate, 5-18% of alkaline earth metal salt, 2-5% of alkali metal salt, 0.5-1% of copper-manganese composite oxide, 0.2-1.5% of transition metal salt, 0.1-0.3% of nonionic surfactant, 0.05-0.15% of organosilicon compound and the balance of water. The coal-fired catalyst is specially designed for a power plant, has excellent permeation and adsorption performance, solves the problem that the coal-fired catalyst is difficult to uniformly disperse in blocky coal, promotes full combustion of the coal in the power plant, improves the combustion rate and the burn-off rate, eliminates solid hazardous wastes from the preparation raw materials, ensures safety and environmental protection, and is suitable for industrial production. The power plant can be assisted to save coal resources, emission of harmful pollutants can be reduced from the source, and remarkable economic benefits and environmental benefits are brought to the power plant.

The invention relates to the technical field of dechlorination devices, and provides a high-chlorine coal washing dechlorination leaching device which comprises a dechlorination tank body provided with a washing dechlorination area, and a circulation opening is formed in the bottom of the washing dechlorination area; the conveying part is circularly arranged on the dechlorination tank body, the plurality of push plates are arranged on the conveying part, and the push plates are configured to move along the bottom of the washing dechlorination area under the driving of the conveying part; the screen piece is arranged on the circulation opening; the first spray pipe is arranged on the dechlorination tank body and located below the screen piece, the first spray pipe is provided with a first nozzle, and the first nozzle faces the screen piece. According to the technical scheme, the problems that in the prior art, the dechlorination effect needs to be improved when a traditional kettle body is subjected to water washing dechlorination, and a filter screen part in the kettle body is prone to being blocked are solved.

The invention belongs to the related technical field of metal fuels, and discloses an aluminum-lithium alloy powder fuel and a preparation method thereof, the aluminum-lithium alloy powder fuel is prepared from the following raw materials in percentage by mass: 2-10% of Li, 0.1-5% of Mg, 0.1-3% of RE and the balance of Al. The added Mg element can separate out stable, fine and uniformly-distributed intermetallic compounds besides a micro-explosion effect, the activity of Li in the alloy can be reduced, the stability of the fuel can be improved, the added RE element can form an Al3 (Li, RE) precipitated phase with a core-shell structure by taking the precipitated intermetallic compound Al3RE as a heterogeneous nucleation particle of a metastable phase delta '(Al3Li), and the stability of the fuel can be improved. Through targeted component design, the structure regulation and control of the precipitated phase in the alloy powder can be realized, so that the microstructure of the precipitated phase is improved, and the combustion performance of the fuel is improved.

Certain exemplary embodiments can provide systems and / or methods for producing dried biomass materials, such as from bales of biomass. Biomass materials can be converted into, e.g., pellets, briquettes, cubes, and / or other products with dried and / or densified states. These dried, densified products can be used for, e.g., bioenergy and / or animal feed applications.

The invention discloses a sludge treatment process based on an ultrasonic hydrothermal carbonization technology. The sludge treatment process comprises the following steps: intercepting and filtering out large impurities in biological sludge; carrying out solid-liquid separation on the intercepted sludge, and carrying out concentration treatment on the sludge to obtain concentrated sludge; discharging the concentrated sludge into an ultrasonic hydrothermal carbonization reaction kettle, adding water to adjust the concentration of the concentrated sludge to 10-20%, starting an ultrasonic generator, adding a composite catalyst when the temperature in the ultrasonic hydrothermal carbonization reaction kettle reaches 50 DEG C and the pressure reaches 0.8 Mpa, and converting to generate carbon slurry; wherein the composite catalyst is prepared from ferric oxide, platinum and activated carbon according to a preset proportion; carrying out primary solid-liquid separation on the carbonaceous slurry, separating solid-phase carbon mud and liquid-phase carbon mud in the sludge suspension, and carrying out filter pressing on the solid-phase carbon mud to obtain a mud cake; and drying the mud cake, and granulating in a granulator to obtain the hydrothermal carbon granules. According to the sludge treatment process based on the ultrasonic hydrothermal carbonization technology, the sludge treatment difficulty can be effectively reduced, and the sludge can be quickly treated.

The invention relates to pig manure biomass granular fuel and a preparation method thereof, belongs to the technical field of biomass fuel and environmental protection, and particularly relates to a comprehensive treatment and resource utilization technology of livestock and poultry breeding manure. Carrying out solid-liquid separation on the pig farm fresh pig manure through a spiral dry-wet separator to obtain pig manure residues; the method comprises the following steps: drying pig manure residues to reduce the water content to 22-30wt%, then crushing and screening, burdening the pig manure residues, the pretreated sawdust and chicken manure biochar, and further mechanically stirring and mixing for 10-15 minutes to obtain a uniform mixture with the water content of 22-28wt%; carrying out extrusion forming on the obtained mixture by adopting a biomass granulator to obtain the pig manure biomass granular fuel; and naturally cooling the formed pig manure biomass pellet fuel to room temperature, and screening out unqualified products with the length of less than 4mm to obtain oversize products which are qualified pig manure biomass pellet fuel finished products. The method not only solves the problem of ecological environment pollution caused by the pig manure, but also provides thinking and direction for reduction, harmlessness and resource comprehensive utilization of the livestock and poultry manure.

The invention relates to the technical field of biomass particle fuel preparation, in particular to straw biomass particle fuel preparation equipment which comprises a conveying pipe, a caliber adjusting mechanism, a particle length adjusting mechanism and a particle size adjusting mechanism and further comprises an outer side mounting seat fixedly mounted at one end of the conveying pipe and a synchronous belt wheel set rotationally mounted on one side of the mounting seat. A servo steering engine is fixedly mounted at the top of the mounting base, a driving bevel gear is fixedly mounted at the output end of the servo steering engine, and a transmission assembly extending to the bottom is rotationally mounted at the bottom of the mounting base. A servo steering engine drives a driving bevel gear to adjust different particle sizes of a particle size adjusting mechanism, and meanwhile, a bevel gear ring in the particle size adjusting mechanism drives a particle length adjusting mechanism and a caliber adjusting mechanism to work cooperatively through a transmission assembly, so that the length of straw particles is controlled in a coordinated mode; therefore, the prepared straw biomass particles are ensured to reach ideal particle shapes, and synchronous adjustment of particle sizes and particle lengths in the preparation process is ensured.

Disclosed are antioxidants used in compositions and methods to stabilize synthetic feedstock derived from plastic. Some methods disclosed herein include adding an antioxidant composition to a plastic-derived synthetic feedstock composition. Some methods disclosed herein include heating plastic under substantially oxygen free conditions at a temperature of from about 400° C. to about 800° C. to produce a pyrolysis effluent, distilling the pyrolysis effluent, recovering the synthetic feedstock, and adding a stabilizer to the synthetic feedstock to reduce contamination. The disclosure also provides compositions including a synthetic feedstock derived from plastic and an antioxidant.

The invention discloses a high-efficiency coal-saving agent for cement clinker firing and a preparation process and application thereof. The coal saving agent comprises the following components in parts by weight: 10-20 parts of a penetrating agent, 7-15 parts of a dispersing agent, 20-25 parts of a catalyst, 9-13 parts of a swelling agent, 30-48 parts of a heat supply agent and 60-70 parts of hydrogen peroxide. Wherein the heat supply agent is powder formed by solidifying aluminum powder, iron oxide powder, magnesium powder and glass powder, and the mass ratio of the aluminum powder to the iron oxide powder is 1: (4-7). The magnesium powder accounts for 12-20% of the total mass of the aluminum powder and the iron oxide powder. The glass powder accounts for 14-16% of the total mass of the aluminum powder and the iron oxide powder. The coal saving agent not only can effectively reduce the use amount of coal, but also has a sulfur fixation effect, so that the emission of sulfur oxide gas is reduced.

The invention relates to a granulator for biomass fuel processing and a control method thereof. The granulator comprises a modulator, a conveyor and a pressing unit which are sequentially connected in series, the pressing unit includes: a pressing housing; a circular mold; and a compression roller assembly. The compression roller assembly comprises a compression roller body; and a driving lever part. The adjusting part is connected with the compression roller assembly; by arranging the deflector rod component, materials between the ring die and the compression roller can be stirred by the deflector rod component in the process that the ring die drives the compression roller to rotate, so that the flowability of the materials between the ring die and the compression roller can be improved, and the materials in the deformation compression area can be reduced or prevented from flowing out towards the direction of the feeding area when being extruded by high pressure; therefore, the granulation efficiency can be improved, and the energy consumption is reduced.

The invention discloses core-shell structure composite powder and a preparation method and application thereof.The core-shell structure composite powder is core-shell structure nickel-coated aluminum composite powder, and the core-shell structure nickel-coated aluminum composite powder comprises inner core aluminum powder and an outer shell nickel layer on the surface of the aluminum powder; the core-shell structure composite powder is prepared by adopting a method of combining ultrasonic chemistry and high-pressure liquid phase reduction. The core-shell structure composite powder provided by the invention is widely applied to various fields of railways, aviation, electric power, chemical engineering, petroleum, automobiles, metallurgy and the like. In the spraying process, nickel and aluminum can generate a strong alloying exothermic reaction, and a firm coating can be formed on the surface of a matrix in a metallurgical bonding mode, so that the coating has a wide application prospect especially in the spraying field.

The invention relates to the technical field of coal dechlorination, and provides a chain plate type leaching dechlorination system which comprises an immersion pool, the rack is divided into an immersion section and a leaching section, the immersion section is located in the immersion pool, and one end of the leaching section is located outside the immersion pool; the chain plate conveying belt is circularly and movably arranged on the rack and provided with a plurality of first partition plates, and the first partition plates are evenly distributed at intervals; the number of the guard plates is two, and the two guard plates are arranged on the two sides of the rack. The multiple material containing plates are arranged relative to the chain plate conveying belt in a swinging mode and located between the adjacent first partition plates. A material containing space is formed among the adjacent first partition plates, the two protection plates and the material containing plate. The material containing plate swings to enable the material containing space to swing; after the chain plate conveying belt circularly moves, the plurality of material containing spaces are sequentially separated from the immersion pool. By means of the technical scheme, the problems that in the prior art, coal can only be conveyed outwards after being dechlorinated in a dechlorination pool, and the overall production efficiency is low are solved.

The invention relates to the technical field of coal saving agents, and discloses a coal saving agent which is composed of a combustion improver, an oxidant, an emulsifier, a catalyst, a solvent, a thickener and a pH regulator. Wherein the combustion improver is a mixture of calcium nitrate tetrahydrate, calcium chloride, sodium chloride, sodium thiosulfate, D-trehalose, base oil, dicyclohexylamine and sodium acetate; the oxidant is sodium nitrate; the emulsifier is a mixture of polyethylene glycol monooleate and Tween 20; the catalyst is ferrocene; the pH regulator is hydrochloric acid; the solvent is a mixture of water and methanol. The coal-saving agent comprises a plurality of combustion improvers, such as calcium nitrate tetrahydrate, calcium chloride, sodium chloride, sodium nitrate, sodium thiosulfate, D-trehalose, dicyclohexylamine, sodium acetate and the like. The combustion improvers can promote the combustion reaction from different aspects in the coal combustion process, and the combustion improvers cooperate with one another, so that the combustion efficiency of the coal is remarkably improved.

The invention relates to the technical field of fire coal additives, in particular to a high-efficiency coal saving agent and a preparation method thereof. The coal saving agent is prepared from the following raw materials in percentage by mass: 7-14% of an oxygen supply agent, 5-12% of a combustion improver, 5-13% of a catalyst, 0.1-1% of industrial waste residues, 1-3% of a desulfurization additive, 1-2% of a dispersing agent and the balance of deionized water, wherein the catalyst is a Ce-Mn / TiO2 catalyst, and the catalyst is a TiO2 catalyst; the industrial waste slag is selected from at least one of cold-rolled iron oxide slag, nickel slag or steel slag; the desulfurization additive is selected from at least one of calcium acetate, calcium oxide or calcium carbonate. The coal-saving agent can effectively improve the combustion characteristic of coal, improve the combustion efficiency and the combustion effect, and realize the efficient coal-saving effect under the condition of low mixing amount; meanwhile, desulfurization and denitrification can be achieved, emission of sulfide and nitric oxide is reduced, and environmental pollution can be prevented and controlled.

The invention discloses a coal briquette forming device and method, and belongs to the technical field of coal briquette machining.The coal briquette forming device comprises a rack, the rack comprises an upper beam, a lower beam and a supporting rod used for connecting the upper beam and the lower beam, and the coal briquette forming device further comprises a downward pressing part, the lower pressing part comprises a first oil cylinder fixedly arranged on the upper beam and a pressing head arranged at the end part of a piston rod of the first oil cylinder; the stirring heat preservation hopper is fixedly arranged on the side edge of the upper beam and is used for stirring and mixing the pulverized coal; the feeding hopper is arranged on the lower beam in a sliding mode, a pre-extrusion assembly is arranged in the feeding hopper, and a second oil cylinder used for driving the feeding hopper to move transversely is arranged on the lower beam; the mold cavity is formed in the lower beam; according to the coal briquette stacking device, the compactness of briquettes can be conveniently improved, the briquettes can be automatically stacked, the briquettes are effectively prevented from loosening, the rejection rate of the briquettes is reduced, and the processing quality and processing efficiency of the briquettes are improved.

Disclosed is a pyrolysis reaction method including a raw material input step of inputting a raw material and acquiring first data, a pyrolysis reaction step of pyrolyzing the input raw material, a reactant discharge step of discharging a pyrolyzed reactant and acquiring second data, an image sample collection step of additionally obtaining image samples, a DB storage step of normalizing the obtained image samples into time series data and storing RGB code values in a DB, a labeling step of assigning labels to the first data and the second data, a data processing step of comparing the first data and the second data with the data stored in the DB to generate third data and fourth data, and a control value deriving step of deriving control values of a pyrolysis temperature and a pyrolysis time based on the third data and the fourth data.

To provide means for preparing semi-carbonized pellets of consistently uniform quality.SOLUTION: A preparation method for semi-carbonized pellets comprises a heating step of heating biomass powder in a reactor to obtain a semi-carbonized material, a washing step of washing the semi-carbonized material with a washing liquid, and a compression molding step of compression-molding the washed semi-carbonized material to obtain semi-carbonized pellets.SELECTED DRAWING: None

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.

A method of producing an agglomerate mainly composed of carbon of biomass origin is provided. The method of producing an agglomerate mainly composed of carbon includes a grinding step of grinding biomass having a volatile matter of 1 mass% or more and less than 20 mass% on a dry basis to obtain a biomass powder having a maximum particle size of 300 µm or less, and a hot pressing step of compacting the biomass powder at a temperature included in a temperature range of 600 °C or more and 1250 °C or less in an oxygen-deprived environment to obtain an agglomerate.

The invention belongs to the technical field of coal combustion, and particularly relates to an environment-friendly rare earth catalyst as well as a preparation method and application thereof in promoting coal combustion. The catalyst is prepared from composite rare earth oxide, calcium oxide, potassium carbonate, ferrous sulfate, kaolin, diatomite and a multi-component composite assistant component in a specific proportion through the steps of slurry ultrasonic activation, rare earth coating, assistant step-by-step doping, microwave drying, protective atmosphere roasting and the like. The catalyst is unique in structure and good in dispersity, the coal combustion efficiency can be remarkably improved, the burnout temperature and the carbon content of fly ash are reduced, emission of flue gas pollutants such as CO, NOx and SO2 is effectively reduced, and the catalyst is suitable for the fields of energy conservation, carbon reduction and environment-friendly treatment of coal-fired power plants and industrial boilers.

The invention provides application of a Lewis acid-base eutectic solvent in sludge modification, modified sludge, a preparation method and application of the modified sludge, sludge coke slurry and application of the sludge coke slurry, and relates to the technical field of sludge resource utilization. According to the invention, the Lewis acid-base eutectic solvent is adopted to modify the sludge, so that the catalytic degradation of hydrophilic oxygen-containing functional groups (HOFG) in the sludge can be effectively promoted, the interaction between the hydrophilic oxygen-containing functional groups and water molecules is weakened, the conversion from bound water to free water is promoted, and the water content of the sludge is remarkably reduced. Moreover, the Lewis acid-base eutectic solvent promotes bound water to be converted into free water, so that not only is the viscosity of the sludge reduced, but also the flowability of the sludge is improved, and the treatment and processing characteristics of the sludge are optimized. The modified sludge obtained through modification of the Lewis acid-base eutectic solvent is used for preparing slurry fuel, the addition amount of the modified sludge is large, and resource utilization of the sludge is achieved.