613 results about "Waste tires" patented technology

The invention relates to a waste tire cracking furnace, and belongs to the field of solid waste comprehensive utilization equipment, the waste tire cracking furnace comprises a cracking furnace body, the cracking furnace body is internally provided with a material stirring part used for turning over waste tires in the cracking furnace body, and the material stirring part is connected with a driving assembly driving the material stirring part to rotate; an opening is formed in one end of the cracking furnace body, a slag discharging device is connected to the opening of the cracking furnace body, the slag discharging device is used for blocking the opening in one side of the cracking furnace body, and a water inlet pipe penetrates through the slag discharging device and is slidably connected with the slag discharging device in an inserted mode. The waste tire treatment device has the effect of improving the waste tire treatment efficiency of the cracking furnace.

The invention discloses a technology for manufacturing a thin film by recycling and calendering a polytetrafluoroethylene material, and belongs to the technical field of high polymer material recycling and processing, the technology for manufacturing the thin film by recycling and calendering the polytetrafluoroethylene material comprises the following steps: crushing waste products, and carrying out three-stage screening impurity removal and melt index detection; after being cleaned by supercritical carbon dioxide, the qualified material is mixed with industrial by-product filler, waste tire rubber powder and the like, low-temperature mixing is conducted through a double-screw extruder, and mixing parameters are automatically regulated and controlled through a tension sensor; performing calendaring forming by a five-roller calendaring unit, preheating the first two rollers, performing differential stretching by the middle three rollers, engraving a micro groove by the third roller, and controlling the thickness precision to be + / -3% by an online thickness gauge; the film is slit after being compounded according to requirements, and scrap edges are crushed and recycled. The method realizes efficient recovery of waste polytetrafluoroethylene, and has the advantages of thorough impurity removal, stable performance, environmental protection and energy saving.

The invention discloses a multi-solid waste interface collaborative optimization regenerant and a preparation method of a regenerated asphalt mixture thereof, and belongs to the technical field of road material regeneration. In order to solve the problems that a traditional single regenerant is insufficient in performance improvement, low in solid waste utilization rate and high in carbon emission, citric acid is used for activating steel slag powder to enhance the reactivity of the steel slag powder and fatty acid methyl ester (FAME) ester groups, and a silane coupling agent is used for modifying waste tire rubber powder to improve the interfacial compatibility of the waste tire rubber powder with steel slag and asphalt; lignosulfonate stabilizes FAME, reduces interfacial tension of FAME and improves dispersibility of FAME, and then three-component interface collaborative optimization is achieved. According to the invention, the rigid reinforcing effect of the steel slag powder, the elastic recovery characteristic of the rubber powder and the regeneration function of the FAME are fully utilized, and a gradient temperature mixing process is combined to form a'rigid reinforcing-elastic buffering-dynamic regeneration 'synergistic mechanism. The composite regenerant can recover the viscosity, rheology and other characteristics of the aged asphalt, improve the high and low temperature and other comprehensive pavement performance of the regenerated asphalt mixture, and achieve the purposes of multi-element solid waste recycling and low carbonization.

The utility model discloses a waste tire stacking device which comprises a base, a supporting table and a vertical pipe. The base is a fixed platform, the four corners of the base are each provided with a counterbore to form a locking hole, the center of the base is provided with a circular embedded position, a supporting table of a disc structure is embedded in the embedded position, the center of the supporting table is vertically provided with a rod-shaped vertical pipe, and the center of the bottom of the supporting table is provided with a positioning column of a cylindrical structure. A cylindrical cavity used for containing the positioning column is formed in the bottom of the center of the embedded position of the base to form a positioning cavity, and the supporting table is embedded in the positioning cavity through the positioning column to complete center positioning. The tire stacking device has the beneficial effects that stacked tires can be prevented from slipping off from a high position; marks on the tire can be conveniently inquired; unified transfer can be achieved through a forklift and a crane.

The present invention relates to the field of asphalt modification technology, and more particularly to a modified asphalt composite material, a preparation method and its application in ultra-thin wearing layer, including the following parts by mass of raw materials: 4 6 parts of SBS, 3 5 parts of LDPE, 3 5 parts of epoxy castor oil, 2 4 parts of octamercapto POSS modified wood fiber, 1 3 parts of antifreeze agent, 0.1 0.2 parts of mixed catalyst, 6 10 parts of modified asphalt, 5 8 parts of waste tire rubber powder, 100 parts of basalt wear-resistant aggregate; the antifreeze agent is mixed by (0.7 0.9) with AB modified mesoporous copper sulfide, ILs GO, and bisaldehyde PEG in a mass ratio of (0.2 0.3) : (1); the modified asphalt is mixed and kneaded by 10 parts of petroleum asphalt and 0.6 1.2 parts of tetraallylsilane. The modified asphalt composite material prepared by the present invention has good anti-freeze cracking performance, and has certain intrinsic self-repairing performance.

The invention provides a waste tire pyrolysis device, system and method, and relates to the technical field of waste tire treatment.The waste tire pyrolysis device comprises a pyrolysis chamber and a high-temperature flue gas unit, and the pyrolysis chamber is provided with a heating area, a first pyrolysis area and a second pyrolysis area which are sequentially connected in the extending direction of the pyrolysis chamber; the temperature of the heating area, the temperature of the first pyrolysis area and the temperature of the second pyrolysis area are sequentially increased; each of the heating area, the first pyrolysis area and the second pyrolysis area is provided with a flue gas inlet, and the high-temperature flue gas unit is communicated with the flue gas inlets so as to supply heat to corresponding sections. The waste tire pyrolysis energy consumption can be effectively reduced, and the waste tire pyrolysis degree is ensured.

The invention relates to the field of modified asphalt mixtures, and provides an SBS / waste tire rubber powder composite modified asphalt mixture and a preparation method thereof. The SBS / waste tire rubber powder composite modified asphalt mixture comprises coarse aggregate, fine aggregate, mineral powder, an SBS modifier, modified waste tire rubber powder, a composite bio-based silane coupling agent and matrix asphalt, wherein the modified waste tire rubber powder is obtained through interface pre-modification; according to interface pre-modification, sulfur-sulfur cross-linking bonds in rubber powder are selectively broken through a regeneration activating agent; enabling the surface of the waste tire rubber powder to be self-assembled through an interface guiding agent to form a nano interface layer; the high-temperature stability, low-temperature crack resistance, water stability and aging resistance of the SBS / waste tire rubber powder composite modified asphalt provided by the invention are remarkably improved, and the SBS / waste tire rubber powder composite modified asphalt is green, environment-friendly and high in fatigue self-repairing capability.

Provided is a method for producing chemical products, including: a pyrolysis step of obtaining a first gas fraction, a pyrolysis oil, and a residual fraction by pyrolysis of a crushed material of a waste material including waste tires; a hydrogenolysis step of obtaining a second gas fraction, a light fraction with a boiling point of 350° C. or lower, and a heavy fraction with a boiling point higher than 350° C. by hydrogenolysis of a raw material oil containing at least a part of the pyrolysis oil; and a steam-cracking step of obtaining a chemical product by steam cracking of a steam-cracking raw material oil containing at least a part of the light fraction.

The invention relates to a high-damping shock-absorption anti-collision waste tire ecological retaining wall and an accident alarm system thereof. Staged energy absorption and impact force dissipation are achieved through a three-stage energy dissipation damping structure. A first-stage damping module conducts elastic deformation and friction absorption kinetic energy through waste tires filled with ceramsite. The secondary damping module is further compressed and deformed by a spiral spring group and ceramsite so as to dissipate impact force; the three-stage module disperses residual stress through geometric deformation of a coupling structure of a U-shaped damper and ceramsite, the impact resistance is remarkably improved, and the counter-acting force to a vehicle is reduced. An intelligent monitoring and early warning system powered by solar energy is integrated, the system comprises the thin film array pressure sensor, the buzzer alarm and the wireless communication module, collision data can be collected in real time, the buzzer alarm is triggered when abnormal pressure is detected, and rear-end collision accidents are effectively reduced. Vine plants can be planted in the retaining wall, the water retention characteristic of ceramsite is combined, the greening function is achieved, and the ecological environmental protection effect is enhanced.

The invention relates to the field of waste tire thermal cracking, and discloses a waste tire thermal cracking treatment device which comprises a heating cavity, mounting holes are formed in the two sides of the heating cavity, the interiors of the two mounting holes are jointly and rotationally connected with a thermal cracking cavity, and the interior of the thermal cracking cavity is fixedly connected with an annular filter screen plate. A circular hole is formed in one end of the thermal cracking cavity, a connecting pipe is fixedly connected to the interior of the circular hole, and a flapping mechanism is arranged at one end of the connecting pipe. According to the waste tire thermal cracking treatment device, the driving mechanism drives the thermal cracking cavity and the connecting pipe to rotate synchronously, and the stirring rods on the inner wall of the thermal cracking cavity can turn over tire materials, so that uniform heating is ensured; the connecting pipe drives the beating plate to continuously beat the annular filter screen plate, carbon black attached to the steel wires after pyrolysis is shaken off, the carbon black falls into the cavity bottom through the filter screen holes, the steel wires are intercepted by the filter screen, and separation of the carbon black and the steel wires is achieved.

The invention relates to the technical field of waste tire recovery, in particular to a method and a system for preparing biological aviation fuel by hydrogenation of waste tire pyrolysis oil, a pretreatment unit is used for performing multi-stage filtration and preheating treatment on the waste tire pyrolysis oil; the hydrogenation reaction unit is used for carrying out hydrogenation reaction and shallow cracking reaction on the pretreated waste tire pyrolysis oil; the separation and purification unit comprises a hot high-pressure separator, a dechlorination reactor, a cold high-pressure separator, a hot low-pressure separator and a cold low-pressure separator, and is used for carrying out dechlorination reaction and gas-oil-water separation treatment on a product of the shallow cracking reaction; the circulating hydrogen unit is used for providing mixed hydrogen for the system; and the fractionation unit is used for fractionating the product separated by the separation and purification unit to obtain the biological aviation fuel. According to the method, the waste tire pyrolysis oil is converted into the biological aviation fuel by adopting a series hydrogenation process, so that the problem of waste tire treatment is solved, and high-value utilization of resources is also realized.

The invention provides an upgrading and purifying method for waste tire pyrolysis carbon black, and belongs to the technical field of upgrading, purifying and high-value utilization of waste tires and waste rubber pyrolysis carbon black. The upgrading and purifying method comprises the following steps: carrying out wet magnetic separation on waste tire pyrolysis carbon black to obtain pyrolysis carbon black subjected to magnetic separation; mixing the cracked carbon black subjected to magnetic separation with hydrobromic acid for acid leaching to obtain first acid leaching filtrate and a first carbon black product; adding zinc particles into the first acid leaching filtrate to obtain second filtrate; evaporating and crystallizing the zinc bromide solution to obtain zinc bromide; zinc bromide is prepared into heavy liquid, the first carbon black product is subjected to reselection, and a pure carbon black product and silicon dioxide tailings are obtained; introducing hydrogen sulfide gas into the ferric ion solution for purification and absorption to obtain sulfur and a third filtrate; and the third filtrate is subjected to electrolytic regeneration, and a regenerated ferric ion solution and hydrogen are obtained after electrolytic regeneration is finished. According to the method, the acid leaching byproduct zinc bromide is used as a reselection medium, and resource recycling is achieved while efficient separation and impurity removal are achieved.

The invention provides a light-weight automobile appearance decorating part added with recycled waste and a forming process of the light-weight automobile appearance decorating part, and belongs to the technical field of automobile part manufacturing. The preparation method comprises the following steps: mixing a core layer melt containing polypropylene recycled after consumption, waste tire rubber and a styrene-ethylene-butylene-styrene block copolymer with a supercritical fluid to form a uniform dispersion; after an acrylonitrile-styrene-acrylate copolymer surface membrane is formed in a mold cavity, injecting the uniform dispersion to drive the membrane to extend and fill; and gas is induced to generate heterogeneous nucleation on the surfaces of the waste tire rubber particles through pressure relief and grow into bubbles. On the premise that the surface glossiness is not degraded, light weight and high toughness of the appearance decorating part and efficient utilization of renewable resources are achieved.

The invention provides a method for preparing pigment carbon black from waste tires, which solves the problems of low product quality and resource waste in traditional waste tire treatment by optimizing a synergistic process of thermal cracking, oxidation modification, pyrolysis oil carbonization and tail gas closed-loop utilization. The method comprises the following specific steps: crushing the waste tires into rubber powder, and performing thermal cracking to generate a carbon residue and oil-gas mixture; carrying out magnetic separation, grinding and oxidation treatment on the carbon residues to generate oxidized carbon black; fractionating and refining the pyrolysis oil, mixing with carbon black oil, and spraying into a carbon black reaction furnace to generate carbon black; and finally, mixing and granulating the two parts of carbon black to prepare the pigment carbon black. The specific surface area of the prepared pigment carbon black reaches 80-200 m < 2 > / g, the coloring strength is 80-120%, the ash content is smaller than or equal to 18%, and the pigment carbon black can be applied to color master batches and black plastic products by limiting thermal cracking conditions, oxidation conditions and the ratio of mixed oil. The tail gas is recycled after being dedusted and purified, so that efficient cyclic utilization of resources is realized.

The invention discloses nano-composite high-viscosity and high-stability modified asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. The modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 3 to 10 parts of star-shaped SBS (Styrene Butadiene Styrene), 5 to 25 parts of waste tire rubber powder, 2 to 6 parts of C5 / C9 petroleum resin, 2 to 8 parts of naphthenic oil, 0.1 to 0.5 part of sulfur, 1 to 3 parts of organic montmorillonite, and 0.5 to 2 parts of optional maleic anhydride grafted polypropylene and / or 0.1 to 0.5 part of silane coupling agent. The core of the preparation method is that through a three-stage process of swelling and nano dispersion, development and interface reaction and cross-linking stabilization, the technical problems of poor compatibility and easy segregation of an SBS / rubber powder composite system are fundamentally solved by utilizing the physical barrier effect of a nano sheet layer and the synergistic effect of vulcanization / interface chemical bonding. The obtained product has ultrahigh viscosity (dynamic viscosity gt at 60 DEG C, 80000 Pa.s), excellent storage stability (segregation error 1t at 48 hours, 2.0 DEG C) and excellent aging resistance, and the comprehensive performance of the product is far better than that of the prior art.

The utility model relates to the technical field of dust removal equipment, and discloses a waste tire rubber powder preparation device with a dust removal device, which comprises a dust suction device, a screen body is arranged below the dust suction device, a rubber crusher is arranged on the side surface of the screen body, a cleaning device is arranged in the dust suction device, and a dust removal device is arranged in the dust suction device. A limiting device is arranged on the side face of the cleaning device, a collecting frame is arranged in the cleaning device, the dust suction device is composed of a dust suction hood, a connecting pipe, a barrel, a filter screen, a first frame and a fan, and the dust suction hood is arranged at the top of the screen body. According to the waste tire rubber powder preparation device with the dust removal device, dust on the surface of a filter screen can be cleaned through a driving motor and a cleaning brush, the dust can enter a water tank, a water pump is started, water in the water tank can be transferred into a rectangular pipe through a water inlet pipe and a water outlet pipe, and the water is atomized and sprayed out through an atomizing nozzle; and dust can be subjected to dust falling treatment, and the dust removal effect is good.

The utility model relates to a carbon black and steel wire separation device suitable for vertical waste tire cracking, and belongs to the technical field of solid waste treatment. Comprising a carbon black and steel wire separation device body, a curved kick-out device, a filter screen, a carbon black discharge port, a first sealing valve, a carbon black storage tank, a second sealing valve, a water seal tank, a falling pipe and a steel wire discharge port. The carbon black and steel wire separation device suitable for vertical waste tire cracking is simple and reasonable, carbon black and steel wires of a vertical cracking furnace can be effectively separated easily, continuous operation of the vertical rotary cracking furnace is further achieved, wide application and popularization are facilitated, and the carbon black and steel wire separation device is suitable for separation of carbon black and steel wires produced by the cracking furnace for waste tires.

The invention relates to a roundness detection method, a roundness detection system, a roundness detection device, a medium and electronic equipment. The method comprises the following steps: acquiring three-dimensional contour data of a circle of a tire on line, and processing the three-dimensional contour data to obtain three-dimensional data representing a circle of tire area; data of corresponding positions needing to be detected are extracted from the data of the circle of tire area, the distances between all adjacent space points in the data are calculated, all the distances are summed, and the sum value is the tire perimeter; the maximum value and the minimum value representing the tire thickness are extracted from the data of the circle of tire area, and a surface run-out value is obtained after processing; and judging the roundness of the tire according to the perimeter and the surface runout value of the tire. Compared with the existing manual measurement technology, the device has the following remarkable advantages that unqualified tires can be effectively screened out, the waste tire rate is reduced, and the tire forming quality is improved.

The invention relates to the technical field of solid waste resource utilization and building materials, in particular to magnesium slag-based aggregate and a preparation method thereof. According to the specific technical scheme, the industrial magnesium slag is ground into powder; performing surface activation and organic-inorganic hybrid coating modification on the waste tire rubber powder; grading and mixing the magnesium slag powder, the modified rubber powder and a chemical foaming agent to obtain a composite dry material; mixing and granulating the composite dry material and a special bio-based composite cementing solution; and finally, the raw material balls are placed in an alkaline carbon dioxide-rich atmosphere for low-temperature carbonization maintenance. The bio-based cementing solution is stably cured through mechanisms such as ionic crosslinking, mineralization induction and organic-inorganic network interpenetration. The obtained aggregate has a compact shell structure, the bulk density is 650-850 kg / m < 3 >, the cylinder compressive strength is 6-12 MPa, the water absorption rate is lower than 10%, the impact toughness is excellent, efficient synergistic utilization of various solid wastes is achieved, high-temperature sintering is not needed in the process, and low carbon and energy saving are achieved.

The present application relates to biomass compound modified waste tire rubber powder and its preparation method and application. The rubber activator is fully contacted with the waste tire rubber powder under the action of high-speed shearing and the surface of the waste tire rubber powder is activated, and the activated rubber powder is obtained after uniform stirring for a certain time; the biomass modifier is slowly added into the reaction container containing the activated rubber powder in the process of uniform stirring, and the mixed solution is obtained after uniform stirring; the catalyst is added into the mixed solution, and the product obtained by the reaction is centrifuged, washed, suction filtered and dried to obtain the biomass compound modified waste tire rubber powder. Compared with the prior art, the waste tire rubber powder is subjected to reactive surface modification by using the biomass compound as the surface modifier, the biomass modifier is loaded on the surface of the rubber powder through the chemical action between the hydroxyl groups in the molecular structure of the biomass compound and the oxygen-containing groups on the surface of the activated rubber powder, and the activated rubber powder is effectively modified.

The utility model relates to the technical field of waste tire rubber powder processing, and discloses a waste tire rubber powder grinding device which comprises a grinding device main body, supporting legs are fixedly connected to the bottom of the grinding device main body, a base is fixedly connected to the bottoms of the supporting legs, a discharging port is fixedly connected to the bottom of the grinding device main body, and a discharging port is fixedly connected to the bottom of the grinding device main body. A material screening mechanism is arranged below the discharging port, a vibration mechanism is arranged at the bottom of the material screening mechanism, and the material screening mechanism comprises a material screening assembly, a discharging assembly, a supporting assembly and a reset assembly. According to the grinding device for the waste tire rubber powder, the screening mechanism and the screening plate are arranged in the screening box, the rubber powder entering the screening box through the discharging opening is screened, and qualified rubber powder and large-particle rubber blocks with unqualified sizes can be separated; the rubber powder recycling device is convenient for workers to recycle rubber powder and secondarily process unqualified rubber blocks at the same time, does not need to be transferred for multiple times, and is convenient for the workers to use.

The invention relates to the technical field of waste tire crushing, and discloses a waste tire crusher with an anti-blocking function, the waste tire crusher with the anti-blocking function comprises a conveyor and a crushing bin, the upper part of the crushing bin is rotatably provided with a group of first crushing rollers, and one end of each first crushing roller is provided with a driving motor; one end of the crushing bin is provided with a driving wheel, the other end of the crushing bin is provided with a driving wheel, a group of second crushing rollers are rotationally mounted in the crushing bin, driven wheels are mounted at the two ends of each second crushing roller, and the driving wheels and the driven wheels on the same side are sleeved with transmission chains; and under the transmission effect of a belt wheel composed of a driving wheel, a transmission chain and a driven wheel, the second crushing roller crushes the materials again, so that it can be guaranteed that the sizes of tire fragments are kept consistent, and the tire fragments can be prevented from being blocked at an output port.

The invention belongs to the technical field of biomass and solid waste resource utilization, and particularly relates to a biomass activated waste rubber powder material and a preparation method and application thereof. Biomass, acetic acid and water are mixed, a reaction mixture is obtained through a hydrothermal reaction and acetone flushing, a moisture-containing biochar solid and a bio-oil-containing liquid are obtained through vacuum filtration, the moisture-containing biochar solid is dried to obtain biochar, a part of biochar is selected to be ground and dialyzed to obtain biomass carbon dots, and the biomass carbon dots are prepared into biomass carbon dots. Drying the liquid containing the bio-oil to obtain the bio-oil; mixing the obtained bio-oil, biochar, biomass carbon dots and waste rubber powder, and performing microwave activation to obtain biomass activated waste rubber powder. The regenerated asphalt can be obtained by doping the biomass activated waste rubber powder into the waste asphalt. The method provided by the invention can greatly reduce the stockpiling amount of biomass, waste tires and waste asphalt mixtures, improve the ecological environment of the expressway and reduce carbon emission, and has important significance for popularization and application of multi-source solid wastes in highway engineering.

The invention discloses a waste tire sorting and conveying system and a cracking produced gas recovery process thereof, the system comprises a tire classification module, a tire surface defect judgment unit, a repair priority processing module and a tire priority conveying module, and the tire classification module divides size according to tire diameter data and classifies materials in combination with cord thread magnetic attraction characteristics; the tire surface defect judgment unit analyzes and judges tire surface defect data by referring to the tire repair index database; the repair priority processing module constructs a multi-dimensional evaluation matrix to obtain a tire repair priority; and the tire priority conveying module scores, judges and distributes conveying queues according to the repair priority, so that the conversion from extensive recovery to refined classification and high-valued utilization of the waste tires is realized, the problems of low efficiency and high wrong classification rate of traditional manual sorting are solved, key support is provided for large-scale and intelligent operation of a waste tire circular economy industrial chain, and the economic benefit of the waste tires is improved. And the raw material quality and the treatment efficiency of a subsequent recycling process are ensured.

The invention discloses a thermal cracking carbon black iodine absorption value test detection method, and relates to the technical field of material detection. The method comprises the following steps: drying thermal cracking carbon black at 125 DEG C for 1 hour to remove water, weighing 0.5 g of a sample, stirring and adsorbing with 0.04730 mol / L iodine solution at the rotating speed of 10-30 r / min for 10-30 minutes, carrying out centrifugal separation at the rotating speed of 3000-5000 r / min, ensuring that no residual carbon black exists in supernate through light transmittance detection, titrating with 0.03940 mol / L sodium thiosulfate solution, and calculating an iodine absorption value by combining a blank test. The innovation point is an exclusive drying process, dynamic adsorption-centrifugation synergy and a quantitative quality control system. The method has the beneficial effects that the detection period is shortened to be within 1 hour, the measurement error is reduced to + / -1.5%, the problems of insufficient adsorption separation and the like of a conventional method are solved, and the method is suitable for carbon black quality control in the fields of waste tire recovery and the like.

The invention relates to the technical field of waste tire pyrolysis oil treatment, in particular to a method and system for series hydrotreatment of waste tire pyrolysis oil, and the method comprises the following steps: S1, mixing pretreated waste tire pyrolysis oil with mixed hydrogen, and then carrying out primary preheating and low-temperature hydrotreatment; s2, performing hydrofining reaction and shallow cracking reaction on the low-temperature hydrogenation effluent; s3, performing thermal high-pressure separation treatment on the cracking reaction product to obtain a first gas phase and a first liquid phase; s4, condensing the first gas phase, performing cold high-pressure separation treatment to obtain a second gas phase and a second liquid phase, and performing cold low-pressure separation treatment on the second liquid phase to collect an oil phase; the first liquid phase is subjected to thermal low-pressure separation treatment to obtain a third gas phase and a third liquid phase, and the third gas phase is condensed and then subjected to cold low-pressure separation treatment to collect an oil phase; and S5, mixing the third liquid phase and the oil phase, and carrying out reaction product fractionation treatment. According to the technical scheme, deep processing of the waste tire pyrolysis oil is achieved, energy consumption of the device is reduced, and the continuous operation period of the device is prolonged.

The application discloses a modification method of waste tire thermal cracking carbon black and the obtained carbon black. The method comprises the following steps: (1) high-temperature treatment of thermal cracking carbon black; (2) adding the thermal cracking carbon black after high-temperature treatment in step (1) into an acid solution, stirring to obtain an acid washing thermal cracking carbon black water suspension, and drying after water washing to obtain acid washing thermal cracking carbon black; and (3) mixing the acid washing thermal cracking carbon black obtained in step (2) with a silane coupling agent and performing heat treatment to obtain modified thermal cracking carbon black. The modification method reduces the ash content of the thermal cracking carbon black, enhances the surface activity of the thermal cracking carbon black, improves the reinforcing performance of the thermal cracking carbon black in rubber, increases the use amount of the thermal cracking carbon black, and makes the thermal cracking carbon black have a wider application.

The invention provides a collaborative recovery method for directionally converting SO2 into waste tire cord steel wires, and belongs to the technical field of solid waste recycling. According to the collaborative recovery method provided by the invention, the granular waste tire cord steel is roasted in an SO2 / O2 / N2 mixed atmosphere and an air atmosphere in sequence, and then the valuable metal components copper, zinc and iron in the waste tire cord steel wire are directionally converted into copper sulfate, zinc sulfate and iron oxide through further leaching and magnetic separation processes. According to the method, efficient recovery and resource utilization of valuable metal components of copper, zinc and iron in the waste tire cord steel wires are achieved, an innovative solution is provided for high-value utilization of the waste tire cord steel wires, and the method has good application prospects and social and ecological benefits.

The invention discloses a green and environment-friendly transition layer rubber material for a tire and a production process of the green and environment-friendly transition layer rubber material. The green and environment-friendly transition layer rubber material comprises the following raw materials: natural rubber, high-activity zinc oxide, a bio-based anti-aging agent RD, modified carbon black, N326 carbon black, bio-based bonding resin, sulfur and other auxiliaries. The production process comprises the following steps: 1) preparing modified carbon black; and 2) a third-stage internal mixing process. According to the invention, high-performance modified carbon black is firstly produced from waste tires, and then the high-performance modified carbon black is used as a part of filler to prepare the green and environment-friendly transition layer rubber material for tires; therefore, the scientific problems of poor reinforcing property and weak interface bonding of the recovered carbon black are solved, meanwhile, the quality of the filler is ensured through a multi-stage purification and activation process, finally, the performance breakthrough is realized on the molecular interface level, a green, circulating and sustainable production mode is realized on the process level, and the production cost is reduced. Therefore, the remarkable beneficial effects of high performance, high adhesion, high durability and low environmental load are comprehensively achieved.

This invention relates to the field of petroleum refining and chemical engineering, and discloses a method for hydrogenating waste tire pyrolysis oil. The method includes the following steps: (1) in the presence of hydrogen, the waste tire pyrolysis oil raw material undergoes a gas-phase desulfurization reaction in a first gas-phase hydrogenation reactor to obtain a gas-phase desulfurization reaction product; (2) the gas-phase desulfurization reaction product is subjected to gas-liquid separation to obtain a gas-phase component and a liquid-phase component; (3) the liquid-phase component is pressurized and mixed with hydrogen, and then subjected to a liquid-phase dearomatics reaction in a second hydrogenation reactor to obtain a liquid-phase dearomatics reaction product; the nitrogen content in the waste tire pyrolysis oil raw material is 3000-10000 μg / g. This method uses waste tire pyrolysis oil from the middle distillate as raw material, achieving deep desulfurization while reducing the removal of nitrogen oxides and monocyclic aromatic hydrocarbon saturation. It also simplifies the overall process flow, reduces the reaction severity, and lowers energy and hydrogen consumption.