11 results about "Thermal pyrolysis" patented technology

The invention discloses a Joule thermal preparation method of a carbon-supported high-entropy sulfide catalyst and application of the carbon-supported high-entropy sulfide catalyst in a zinc-air battery. A metal chlorine salt solution is used as a metal precursor, and sulfur is used as a sulfur source. Sulfur, carbon powder and a metal chlorine salt solution are uniformly mixed and loaded on a conductive carrier, and Joule heat treatment is carried out. Instantaneous high temperature acts on a carbon-supported metal precursor, the metal precursor is decomposed, S8 is decomposed into high-activity S2 gas, diffusion of sulfur atoms is accelerated at high temperature, combination of S2 and reduced metal atoms is promoted, sulfide bonds are formed, meanwhile, segregation is inhibited through rapid cooling, and finally the uniform single-phase carbon-supported high-entropy sulfide catalyst is formed. The uniformly distributed carbon-loaded high-entropy sulfide catalyst is prepared by Joule thermal pyrolysis, the preparation method is simple, energy-saving and environment-friendly, and the catalyst can simultaneously catalyze an oxygen reduction reaction and an oxygen evolution reaction, is used as a bifunctional catalyst for a zinc-air battery, has excellent catalytic activity and stability, and is easy to popularize and use.

The present disclosure relates to a novel technology that uses concentrated solar radiation to convert hydrocarbons into olefins (such as ethylene and propylene), which are precursors to a myriad of industrial products, including plastics and resins. This process is a disruptive, emissions-free alternative to conventional steam-cracking olefin production that emits high levels of CO2, instead generating a valuable solid carbon co-product that can be used for battery electrodes and other applications.

This invention provides a method for preparing and applying a catalyst for co-thermal pyrolysis of waste plastics and biomass, comprising the following steps: Step 1, mixing FCC waste catalyst, sodium carbonate, and a metal oxide precursor uniformly to form a powder; Step 2, modifying HZSM-5 molecular sieve with phosphorus; Step 3, mixing the mixture obtained in Step 1, the phosphorus-modified ZSM-5 molecular sieve from Step 2, a binder, and water to form microspheres, calcining to obtain the catalyst for co-thermal pyrolysis of waste plastics and biomass. The catalyst prepared by this invention has a large pore size and pore volume, and when used for co-thermal pyrolysis of waste plastics and biomass, the liquid yield is greater than 70%.

The application relates to the technical field of resource recycling, and particularly discloses a resource recycling system based on concentrated solar pyrolysis, which comprises a feeding bin, a multistage heat absorption channel and a plurality of light concentrating components; the multistage heat absorption channel is internally provided with a plurality of flow guide plates, and the multistage heat absorption channel is internally configured to form a waste salt flow channel through the plurality of flow guide plates; the feeding bin is configured to be in communication with the multistage heat absorption channel; the multistage heat absorption channel is provided with at least one light transmission part for allowing a focused light source to enter the waste salt flow channel; the flow guide plates and / or the multistage heat absorption channel are provided with at least one reflection part for reflecting the light source; the resource recycling system based on concentrated solar pyrolysis can store and utilize the product salt after high-temperature pyrolysis as a molten salt material, can adopt pyrolytic carbon material as a molten salt thermal physical property enhancer, and can improve the cleanliness and resource property of the product.

This invention provides an energy-saving pyrolysis device and method for waste tire recycling. The pyrolysis method includes the following steps: S1: Feeding: Waste tires are hung horizontally on a feeding component; waste tires are fed; waste tires are discharged; S2: Pyrolysis: The feed inlet is sealed; waste tires are pyrolyzed; waste tires are dispersed: The pyrolysis furnace rotates to pyrolyze the waste tires, causing the feeding component to rotate and disperse the waste tires inside the pyrolysis furnace. In this invention, the waste tires are laid horizontally, sequentially, and evenly at the bottom of the pyrolysis furnace, replacing the existing method of using a feeder to push tires through the feed inlet into the inner furnace, which causes waste tires to accumulate near the feed inlet. This facilitates subsequent thermal pyrolysis of the waste tires inside the inner furnace, increases the pyrolysis speed, shortens the pyrolysis time, and achieves energy-saving effects.

The invention provides an industrial solid waste-based carbon powder catalyst as well as a preparation method and application thereof, and relates to the technical field of chemical recovery of waste plastics. The industrial solid waste-based carbon powder takes biochar as a substrate, and effective components comprise biomass components and element components such as silicon, aluminum, iron, calcium, magnesium and titanium. The waste plastic cracking method comprises the following steps: adding waste plastic and a catalyst into a batch reactor, and then carrying out waste plastic thermal cracking at a certain temperature to prepare oil. The plastic comprises polyethylene and polypropylene; the plastic oil is C5-C20 hydrocarbon substances and comprises alkane, olefin and aromatic hydrocarbon; the catalyst is an industrial solid waste-based carbon powder catalyst. Efficient conversion of waste plastics can be achieved, the prepared fuel oil is high in yield and heat value, and the problem of plastic garbage pollution can be effectively relieved; the adopted catalyst is low in cost and has good economic feasibility.

The invention discloses a method for preparing a wave-absorbing material through Joule thermal pyrolysis of an out-of-service fan blade, and belongs to the technical field of waste recycling and electromagnetic wave absorbing materials. The pyrolysis temperature is regulated and controlled by controlling Joule heat input current and reaction time, chemical reaction of inorganic components in the fan blade powder can be realized within extremely short time in a high-temperature field, so that the high-performance composite wave-absorbing material under the combined action of various loss mechanisms is prepared; and the method is of great significance in improving the practical applicability and economical efficiency of the retired fan blade. According to the method, green resource recycling and high-value utilization of waste are achieved, meanwhile, Joule heat is adopted for pyrolysis, the heat transfer efficiency can be effectively improved, and compared with traditional pyrolysis, needed energy consumption is reduced.

The invention discloses a qualitative and semi-quantitative synchronous detection method for micro-plastics and polycyclic aromatic hydrocarbons loaded on the micro-plastics in an environmental water body. The method comprises the following steps: constructing a detection model for qualitative and semi-quantitative analysis of the micro-plastics and the polycyclic aromatic hydrocarbons loaded on the micro-plastics; determining detection conditions and setting instrument parameters; determining indication fragments corresponding to the target polycyclic aromatic hydrocarbon and the target micro-plastic; establishing a standard curve of each target polycyclic aromatic hydrocarbon and each target micro-plastic; the method comprises the following steps: collecting a to-be-detected environmental water sample, enriching micro-plastics in the to-be-detected environmental water sample, and sequentially carrying out thermal desorption-gas chromatography-mass spectrometry detection and thermal cracking-gas chromatography-mass spectrometry detection; and analyzing gas chromatography-mass spectrometry detection data according to the detection model to realize qualitative and semi-quantitative synchronous detection and analysis of the micro-plastics and the loaded polycyclic aromatic hydrocarbons in the environmental water body to be detected. The detection method provided by the invention can realize integrated sample treatment and qualitative and semi-quantitative analysis of micro-plastic-polycyclic aromatic hydrocarbon combined pollution in the environmental water body, and improves the detection efficiency and the comparability and integrity of data.

The application relates to the technical field of waste and old tire regeneration treatment, in particular to a waste and old tire thermal cracking regeneration equipment which comprises a crushing device, a heat exchange device, a heating device, a thermal cracking chamber, an exhaust valve, a first heat-conducting inner container, an exhaust pipe, a first shell, an auger conveyor and a first conveying pipe; the exhaust valve is communicatively arranged at the bottom end of the thermal cracking chamber; the first heat-conducting inner container is arranged on the inner side wall of the thermal cracking chamber; the output end of the exhaust pipe is communicatively arranged at the top of the thermal cracking chamber; the auger conveyor is arranged in the first shell, a heating cavity is arranged between the auger conveyor and the first shell, the input end of the exhaust pipe is communicatively arranged on the upper portion of the auger conveyor, and the lower portion of the auger conveyor is in communication with the crushing device; the input end of the first conveying pipe is communicatively arranged at the top of the thermal cracking chamber, and the output end of the first conveying pipe is in communication with the heat exchange device; the waste and old tire thermal cracking regeneration equipment can improve the thermal cracking efficiency of the tire, improve the full recycling effect of heat, reduce the processing energy consumption and improve the energy-saving and environment-friendly effect.

The invention belongs to the field of thrusters, and particularly relates to an electrical stimulation response type thruster combustion enhancing device and method.The device comprises an electronic control solid thruster afterburning grain arranged between a main combustion chamber outlet and a spray pipe of an electronic control solid thruster; a through hole communicated with the main combustion chamber and the spray pipe is formed in the middle of the electronic control solid thruster afterburning grain; the electronic control solid thruster afterburning grain is used for generating oxygen-enriched fuel gas through thermal pyrolysis, the oxygen-enriched fuel gas and high-temperature fuel-enriched fuel gas generated through incomplete reaction combustion in the main combustion chamber are subjected to mixed combustion, and the electronic control solid thruster afterburning grain has combustion controllability. According to the electrical stimulation response type thruster combustion enhancing device, the electronic control solid thruster afterburning grain with the controllable non-self-sustaining combustion characteristic is introduced, and the overall energy conversion efficiency and thrust performance of the thruster are greatly improved on the premise that the inherent switching accuracy and responsiveness of the electronic control solid thruster are not sacrificed at all.

The invention belongs to the technical field of detection, and particularly relates to a method for detecting PE micro-plastic in a lipid-containing organic matrix and application. Comprising the following steps: (1) mixing a PE standard substance with a solvent to prepare a standard working solution; sequentially cleaning and extracting a to-be-detected sample, and extracting PE in the to-be-detected sample to obtain a to-be-detected sample solution; and (2) evaporating the standard solution and the to-be-detected solution in the step (1) to remove the solvent, and then carrying out thermal cracking-gas chromatography-mass spectrometry detection analysis to complete the detection of the PE micro-plastic in the lipid-containing organic matrix. The detection method provided by the invention can be used for detecting the PE micro-plastic in the lipid-containing organic matrix, accurate qualitative and quantitative analysis of the PE micro-plastic in the lipid-containing organic matrix can be realized through a thermal cracking-gas chromatography-mass spectrometry combined detection method, and the method is stable and good in repeatability.