18 results about "Refuse-derived fuel" patented technology

To provide a compression pelletizer for a waste solid fuel, capable of adjusting a flow rate, frictional force, or mixing condition of a waste in a flow path.SOLUTION: A compression pelletizer for a waste solid fuel according to the present invention includes a raw material tube 1 and a screw shaft 2. An interior of the raw material tube 1, which includes a front large-diameter part 11 and a rear small-diameter part 12, is provided with a flow path formed by the front large-diameter part 11 and the rear small-diameter part 12. The screw shaft 2 includes a shaft body having a front large-blade part 21 and a rear small-blade part 22. The front large-diameter part 11 of the raw material tube 1 is formed by fixedly connecting at least one pipe part, and the rear small-diameter part 12 thereof is formed by fixedly connecting at least one pipe part, whereby the front large-diameter part 11 and the rear small-diameter part 12 are connected to constitute the raw material tube 1. The screw shaft 2 is inserted into a flow path inside the raw material tube 1. The pipe part forming the front large-diameter part 11 of the raw material tube 1 includes a tapered flow path segment 111. A rear part of the front large-blade part of the screw shaft 2 is a tapered section 211 formed in a tapered shape.SELECTED DRAWING: Figure 1

The invention discloses a method for reducing and solidifying chlorine escape in household garbage derived fuel, which comprises the following steps: S1, screening to remove inorganic matters in household garbage, drying, and controlling the water content of the household garbage to be 2-25%; and S2, the dried household garbage is smashed, and the smashed particle size of the household garbage is controlled to range from 0.1 mm to 0.8 mm. And S3, adding a chlorine fixing agent into the crushed household garbage, and uniformly stirring and mixing. And S4, the household garbage and the chlorine fixing agent which are stirred and mixed uniformly are pressed, and the garbage derived fuel is obtained. The chlorine-containing harmful waste generated during combustion of the household garbage derived fuel is controlled by controlling the water content and adding the chlorine fixing agent. A gas-phase reaction path for generating polychlorinated dibenzo-p-dioxin and similar substances and precursors thereof from chlorine sources and organic components in the garbage in a high-temperature environment is inhibited, the chlorine sources in low-temperature flue gas are reduced, and the fixation of chlorine in the garbage derived fuel is realized.

The invention belongs to the technical field of energy and chemical industry, and mainly relates to a refuse derived fuel blending combustion system and a refuse derived fuel blending combustion method for peak regulation of a large coal-fired boiler. The system controls opening and closing of a smoke exhaust port of the coal-fired boiler, when the coal-fired boiler normally operates at full load, the smoke exhaust port of the coal-fired boiler is closed, and the smoke exhaust port of the coal-fired boiler is opened and closed; superheated steam generated by boiler flue gas heating enters a steam power generation system through a steam port, and the coal-fired boiler is completely used for heating feed water to generate steam to push a turbine power generation mechanism to generate power; when electricity is used in a low ebb, flue gas generated by the coal-fired boiler is supplied to the gasification furnace and is combined with the garbage drying and separating mechanism and the coal-fired boiler system to produce fuel with high calorific value and good combustibility, boiler combustion is stabilized, and the problem that combustion is unstable in the peak shaving process of the coal-fired boiler is solved.

The application relates to the technical field of garbage compression molding, and discloses a molding equipment for garbage derived fuel, which comprises a base, a motor fixedly installed on the base, a molding bin fixedly installed on the base, a feeding cylinder fixedly installed on the molding bin, a rotating shaft rotatably installed in the molding bin and driven to rotate by the motor, a plurality of compression rollers rotatably installed on the rotating shaft, and a plurality of mold grooves annularly arranged on the inner wall of the molding bin. A baffle for providing pressure to the material is arranged at the discharging end of each mold groove. The garbage molding equipment drives the rotating shaft to rotate by the motor, so that the compression rollers press the material into the mold grooves. The material is extruded when passing through the compression section, so that the compactness of the material is improved. With the material being continuously extruded, the baffle is slid along the fixed rod against the elastic force of the spring, the lower end of the baffle is slid in the mold strip, and the baffle always applies pressure to the discharging end of the material, so that the compactness of the fuel rod is improved. The mold strip provides support for the fuel rod, so that the fuel rod is prevented from being broken or from dropping slag.

There is described a hydrogen production system comprising: a gasification sub-system to produce a syngas stream from a biomass and / or refuse derived fuel feed stream; and a steam methane reformer (SMR) sub-system to produce an SMR syngas stream from a hydrocarbon feed, and to produce a low carbon hydrogen final product by integrating the syngas stream from the gasification sub-system and the SMR syngas stream.

A novel thermoplastic baling wire suitable for baling waste destined for either recycling or for refuse derived fuel, having recyclable properties and good self- knotting properties comprises recycled thermoplastic material is polyethylene5 terephthalate comprising 6% ± 2% by weight of polyethylene. A method of manufacture of said baling wire comprises preparing a masterbatch of recycled polyethylene terephthalate (rPET) including one or more multi-functional acrylic oligomers to obtain a modified recycled polyethylene terephthalate; combining said modified rPET with a phthalocyanine based nucleating agent; transitioning 0 said modified rPET from molten to solid state; and extruding said modified rPET material into an elongate band.

A novel thermoplastic baling wire suitable for baling waste destined for either recycling or for refuse derived fuel, having recyclable properties and good self-knotting properties comprises recycled thermoplastic material is polyethylene terephthalate comprising 6%±2% by weight of polyethylene. A method of manufacture of said baling wire comprises preparing a masterbatch of recycled polyethylene terephthalate (rPET) including one or more multi-functional acrylic oligomers to obtain a modified recycled polyethylene terephthalate; combining said modified rPET with a phthalocyanine based nucleating agent; transitioning said modified rPET from molten to solid state; and extruding said modified rPET material into an elongate band.

The invention discloses chromium slag detoxification and innocent treatment equipment and method based on a fixed bed, and relates to the technical field of chromium slag detoxification and innocent treatment. The equipment comprises a fixed bed reactor, a screening cylinder, a crushing cylinder and a lifting cylinder, integrates crushing, screening, lifting and circulating, does not need external complex crushing equipment, and reduces the pretreatment difficulty and cost of the refuse derived fuel. The method comprises the following steps: by taking the refuse derived fuel as an additive, drying, crushing and screening, mixing the refuse derived fuel with qualified particle size with chromium slag in a fixed bed reactor, and carrying out pyrolytic reaction under the protection of nitrogen to reduce hexavalent chromium into trivalent chromium. According to the chromium slag detoxification equipment, through sequential transmission coupling of the lifting auger, the linkage mechanism and the vertical vibration mechanism, multi-element driving input of a single power source is achieved, the equipment cost is saved, chromium slag detoxification treatment of treating waste with waste is achieved, the treatment cost is low, high efficiency and stability are achieved, Cr (III) reoxidation can be effectively avoided, and harmless, reduction and resourceful treatment of chromium slag is achieved.

The invention provides a method for improving RDF (Refuse Derived Fuel) raw material homogenization by using a microwave-assisted pretreatment technology, which belongs to the technical field of preparation of Refuse Derived Fuel and adopts an integrated process of accurate raw material sorting, multi-stage particle size grading, staged variable power microwave treatment, online component closed-loop regulation and secondary homogenization mixing. Double homogenization of physical characteristics and chemical components of the raw materials is realized; gradient microwave parameters are designed according to dielectric properties of different components, and raw material calorific value fluctuation and ash content difference are remarkably reduced by combining near infrared spectrum online detection and functional aid regulation and control. The method has the beneficial effects that the heat value fluctuation range of the RDF raw material prepared by the method is less than or equal to 5%, the ash content fluctuation range is less than or equal to 3%, the energy consumption is reduced by 25-30% compared with that of traditional mechanical pretreatment, and a high-quality raw material basis is provided for subsequent RDF forming and efficient and clean combustion. The method has the characteristics of compact process, low energy consumption and wide adaptability, and is suitable for large-scale industrial application.

The invention belongs to the technical field of environment-friendly energy, and particularly relates to a refuse derived fuel and a preparation method thereof. The refuse derived fuel comprises the following components in percentage by weight: 55-85% of household refuse and 15-45% of industrial refuse, wherein the household refuse comprises the following raw materials in parts by weight: 10-30 parts of dry refuse, 20-30 parts of waste plastic, 10-20 parts of waste textile and 10-20 parts of waste paper; and / or the industrial wastes comprise the following raw materials in parts by weight: 5-15 parts of dried biogas residues, 5-15 parts of construction waste light substances and 5-15 parts of general industrial solid wastes. According to the invention, through a simple process route of conveying, crushing, sorting and impurity removal, and extrusion forming, the refuse derived fuel with high calorific value and excellent combustion performance is prepared from low-value fuel with reasonable compatibility, so that resource utilization of solid wastes is realized, part of fossil fuel is replaced, greenhouse gas emission is reduced, and environmental pollution is reduced. And the problems of resource waste and secondary pollution are avoided.

This invention discloses a sulfur and chlorine fixation agent for waste-derived fuel, its application, and the waste-derived fuel itself. The raw materials for the sulfur and chlorine fixation agent include the following components by weight: 50-80 parts calcium-based desulfurization ash; 5-30 parts sodium-based desulfurization ash; 5-30 parts quicklime; and 3-15 parts oxidant. This invention also provides the application of the sulfur and chlorine fixation agent for waste-derived fuel in waste-derived fuel and the waste-derived fuel itself. The sulfur and chlorine fixation agent of this invention can significantly reduce the volatilization rate of S and Cl during the combustion of waste-derived fuel, making it suitable for the subsequent utilization of waste-derived fuel in incinerators and gasifiers. It can co-process calcium-based and sodium-based desulfurization ash from steel plants, achieving the effects of waste-to-waste treatment, low investment, and rapid results.

A thermoplastic baling strap suitable for baling waste destined for either recycling or for refuse derived fuel, having recyclable properties and good self- knotting properties comprises recycled thermoplastic material is polyethylene terephthalate comprising 6% ± 2% by weight of polyethylene. A method of manufacture of the baling strap comprises preparing a masterbatch of recycled polyethylene terephthalate (rPET) including one or more multi-functional acrylic oligomers to obtain a modified recycled polyethylene terephthalate; combining the modified rPET with a phthalocyanine based nucleating agent; transitioning the modified rPET from molten to solid state; and extruding the modified rPET material into an elongate band. Also disclosed is an apparatus for manufacture of the thermoplastic bailing strap.

The present application relates to the technical field of pulverizing device, and mainly relates to an energy-saving pulverizing device for garbage-derived fuel, which comprises a cloth tearing machine, a feeding bin is installed on the cloth tearing machine, a conveyor for cloth transmission is arranged on the outer side of the cloth tearing machine, and the device further comprises a mounting shaft which is rotatably installed at the inlet of the feeding bin, a dispersing part for dispersing the cloth on the conveyor is installed on the mounting shaft; and a blowing part is fixed in the feeding bin, cloth particles flying up are blown downward through the blowing part, the traditional cloth tearing machine is optimized, the dispersing part and the dust falling part are additionally arranged in the feeding bin above the cloth tearing machine, the cloth conveyed on the conveyor is dispersed and moistened, a large amount of cloth is prevented from entering the tearing machine at one time, the flying of large particles during the tearing process is avoided, the flying particles can be moved downward with the aid of the designed blowing part, and the particles are prevented from flying out of the feeding bin.

The invention relates to the technical field of garbage compression forming, and discloses forming equipment for garbage derived fuel, which comprises a base and a motor fixedly mounted on the base, a forming bin is fixedly mounted on the base, a feeding cylinder is fixedly mounted on the forming bin, and a rotating shaft driven by the motor to rotate is rotatably mounted in the forming bin. According to the garbage forming equipment, the motor is used for driving the rotating shaft to rotate, so that the compression rollers press the materials into the mold grooves, the materials are extruded when passing through the compression section, and the materials are pressed into the mold grooves through the compression section; along with continuous extrusion of the materials, the baffle is pushed to overcome the elastic force of the spring to slide along the fixing rod, the lower end of the baffle slides in the mold strip, pressure is applied to the discharging end of the materials all the time, the compactness of the fuel rod is improved, the mold strip supports the fuel rod, and the fuel rod is prevented from being broken or falling off slag.

The application discloses a garbage derived fuel processing device, which comprises a box body with a feeding port, at least two toothed rollers are arranged in the box body and rotate in opposite directions, a feeding pipe is arranged on the feeding port of the box body, one end of the feeding pipe away from the box body is connected with a feeding hopper, a rotating shaft is rotatably arranged on one end of the feeding pipe close to the feeding hopper, a plurality of turnover blades are arranged on the rotating shaft in a circumferential direction, a rotating rod extending along the length direction of the feeding pipe is rotatably arranged on the top surface of the feeding pipe, at least one water spraying cover and at least one medicine spraying cover are arranged on the rotating rod, and the water spraying cover is arranged on the side of the medicine spraying cover away from the feeding port. The application simplifies the processing technology after crushing, increases the range of liquid flushing and disinfection of the garbage, improves the uniformity of the mixed liquid and garbage, and improves the cleaning and disinfection effect.

The invention relates to the technical field of solid waste resource utilization, in particular to a method for resource utilization of municipal solid waste. The method comprises the following steps: sorting parts with calorific value in the municipal solid waste, and then crushing to obtain a crushed material; according to the present invention, the crushed material is mixed with the dried sludge produced by the municipal sewage treatment plant and the organic matter solution, and then molding and aging are performed to prepare the refuse derived fuel RDF, such that the research results show that the refuse derived fuel RDF prepared by using the method has characteristics of high compaction density and high calorific value, the method indicates a research direction for improving the performance of the refuse derived fuel, and plays a positive role in exploring the resource utilization of the municipal solid waste.

A novel thermoplastic baling wire suitable for baling waste destined for either recycling or for refuse derived fuel, having recyclable properties and good self-knotting properties comprises recycled thermoplastic material is polyethylene terephthalate comprising 6%±2% by weight of polyethylene. A method of manufacture of said baling wire comprises preparing a masterbatch of recycled polyethylene terephthalate (rPET) including one or more multi-functional acrylic oligomers to obtain a modified recycled polyethylene terephthalate; combining said modified rPET with a phthalocyanine based nucleating agent; transitioning said modified rPET from molten to solid state; and extruding said modified rPET material into an elongate band.

The invention discloses a sludge and household garbage collaborative incineration treatment method. The method comprises the steps of sludge pretreatment, household garbage pretreatment, auxiliary material treatment, collaborative incineration, flue gas treatment and ash treatment. According to the method, the stability of collaborative incineration is guaranteed through low-temperature drying of the sludge, preparation of the refuse derived fuel and optimization of auxiliary materials. And a two-step combustion and quenching technology is adopted, so that the generation of NOx and dioxin is effectively inhibited. And preliminary incineration desalination and differential stabilization processes are innovatively introduced, so that the problems of high-salinity slagging and heavy metal leaching are solved. After the ash residues are separated and metal is recycled, accurate curing is carried out by combining a wide pH chelating agent and intelligent response microcapsules, and resource utilization and long-term environmental safety are achieved.