264 results about "Waste tires" patented technology

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.

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 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 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 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.

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.

The invention relates to the technical field of building materials, in particular to an energy-saving and environment-friendly recycled concrete pipe pile and a preparation method thereof. The recycled concrete is prepared from the following raw materials in parts by weight: 35 to 45 parts of recycled aggregate, 22 to 28 parts of P.O42.5 Portland cement, 6 to 9 parts of magnesium phosphate cement composite admixture, 18 to 22 parts of river sand, 1.0 to 1.3 parts of hydroxylated graphene-chitosan-nano zinc oxide ternary composite modifier, 6 to 8 parts of modified waste tire rubber powder, 0.5 to 0.8 part of basalt fiber and the like. The rubber powder is soaked in a sodium hydroxide solution and then treated with a maleic anhydride grafted polyethylene solution; the metakaolin is prepared by calcining coal gangue; the ternary modifier is prepared by grafting, crosslinking and dispersing; the magnesium phosphate admixture contains light calcined magnesia, ammonium dihydrogen phosphate and borax. The tubular pile is excellent in mechanical and durable performance and high in solid waste utilization rate, carbon emission and production energy consumption are reduced, the cost is reduced, the problems that a traditional regenerated tubular pile is low in strength and poor in environmental protection performance are solved, the tubular pile is suitable for multiple engineering scenes, and economic and environmental benefits are remarkable.

The invention discloses a waste tire continuous thermal cracking feeding control method and system based on machine learning, and relates to the technical field of plastic waste recovery. The method comprises the following steps: acquiring a historical rear end socket temperature sequence and a historical internal pressure sequence of a cracker in a historical time window, and a rotation angular velocity and feeding rate sequence in a future preset time window; on the basis of the long and short-term memory network, predicting a predicted end socket temperature sequence and a predicted internal pressure sequence in a future window; with improvement of temperature, pressure and feeding rate stability as multiple targets, an adaptive feeding rate sequence is searched and output in a feeding rate adjustment space through digital twinborn simulation and an intelligent optimization algorithm in combination with the prediction sequence; and finally, carrying out feeding control on the cracker according to the sequence in a preset time window. According to the method, prospective optimization control over the cracking working condition is achieved, the hysteresis quality of traditional control is effectively overcome, and the stability, safety and automation level of the continuous thermal cracking process are improved.

The application discloses a high-viscosity recycled asphalt mortar based on oil-rich RAP fine materials and a preparation method thereof, and belongs to the technical field of highway engineering materials. The high-viscosity recycled asphalt mortar comprises the following components: oil-rich RAP fine materials, base asphalt, a high-viscosity modifier, a recycling agent and a dissolving agent. The high-viscosity modifier comprises the following components: waste tire rubber powder grafted with GMA (glycidyl methacrylate), BMI (bismaleimide), an adhesive, isooctanol polyoxyethylene ether and sulfur. The waste tire rubber powder grafted with GMA can improve the interfacial bonding strength of the oil-rich RAP fine materials and the base asphalt, thereby improving the water damage resistance of the recycled asphalt mixture. The BMI forms an interpenetrating structure (crosslinking network) among the rubber powder, the oil-rich RAP fine materials and the base asphalt, thereby improving the crack resistance of the recycled asphalt mixture.

The utility model provides waste tire rubber breaking and sorting equipment, which belongs to the technical field of waste tire treatment, and comprises a sorting device, the sorting device comprises a first sorting piece, a second sorting piece, a third sorting piece and a fourth sorting piece, the second sorting piece comprises a cylindrical second screen mesh and second connecting parts connected to the two ends of the second screen mesh; the second connecting part located at the feeding end of the second sorting piece is fixedly connected with the first connecting part located at the discharging end of the first sorting piece. The mesh diameter of the second screen is larger than that of the first screen; and the transmission part drives the first sorting part and the second sorting part to coaxially rotate. The waste tire rubber crusher solves the technical problem that particles with different particle sizes cannot be effectively graded after waste tires are crushed into particles by the existing tire rubber crusher, and has the characteristic of being capable of efficiently grading according to the sizes of rubber particles.

The utility model discloses a pyrolyzing furnace for waste tire treatment, which comprises a combustion tank, a rolling crushing mechanism, an anti-overloading mechanism and a support adjusting mechanism, the rolling crushing mechanism comprises a rolling motor, an output shaft, a rotating shaft, a rotating block, a leak hole plate and a rolling shaft, the anti-overloading mechanism comprises an anti-overloading pipe, an anti-overloading rod, a stretching-in frame, a stretching-in groove, a moving groove, a moving block, a supporting spring and a sliding rod, and the supporting adjusting mechanism comprises a sliding sleeve, a threaded plate, a supporting plate, a lead screw, rotating teeth and an outer tooth ring. Meanwhile, uniform distribution of materials is achieved, the pyrolysis efficiency is improved, in the operation process of the device, part damage caused by overload or abnormal conditions can be effectively prevented, the stability and safety of equipment operation are improved through linkage protection design, a supporting adjusting mechanism can adjust the pre-tightening force of a supporting spring according to needs, and the safety of equipment operation is improved. Therefore, different working environments and load requirements can be met.

The invention discloses an aramid fiber reinforced concrete material for a light sound barrier plate and a preparation method of the aramid fiber reinforced concrete material, and relates to the field of light building materials, and the aramid fiber reinforced concrete material is prepared from cement, fly ash, silica fume, quartz sand, light ceramsite, rubber fine sand, a water reducer, a fiber plasticizer, water and modified aramid fiber. The waste tire rubber powder is heated by using the aqueous alkali to prepare the fine rubber sand, so that exploitation of natural sand can be reduced, and energy conservation and emission reduction are realized. The interface bonding force between the modified aramid fiber and cement and other raw materials is enhanced, the acid and alkali resistance is high, the tensile strength of the concrete material can be improved, and the durability of the concrete performance under complex conditions is guaranteed.

The present application relates to the technical field of modified asphalt, and relates to cottonseed biological oil pre-desulfurization rubber powder modified asphalt and a preparation method thereof, wherein cottonseed oil residues containing unsaturated fatty acids are used to pre-swelling desulfurization of waste rubber powder, a three-dimensional cross-linking network of the rubber powder is effectively destroyed, functional group reconstruction is promoted, the compatibility and interface physical embedding of the rubber powder and base asphalt are improved, and the problem of easy delamination is overcome; the lubricating and diluting effects of the biological oil can reduce the tackifying effect of the rubber powder and reduce the structural viscosity of the modified system; the swelling rubber powder forms a dense elastic network in the matrix, which not only retains strong high-temperature anti-rutting and anti-permanent deformation capability, but also reduces the low-temperature stiffness modulus, improves the low-temperature flexibility and stress relaxation capability of the asphalt; the preparation method realizes high-value utilization of waste tires and oil refining waste residues, and has environmental protection and economic benefits.

This invention relates to a stable and durable high-content waste tire rubber powder modified asphalt, its mixture, and a preparation method. The raw materials, by weight percentage, are: 100 parts base asphalt; 40-50 parts waste tire rubber powder; 5-7 parts viscosity reducer; 0.1-0.8 parts crosslinking agent; and 1-2 parts reinforcing agent. The crosslinking agent is ABS, and the viscosity reducer is at least one selected from naphthenic rubber oil, alkane rubber oil, aromatic rubber oil, and polycyclic aromatic rubber oil. In the mixture, 40-mesh and 200-mesh waste tire rubber powder are added. The combination of rubber powder with different particle sizes replaces aggregate and filler in equal amounts, and forms a combination with some incompletely swollen rubber powder in the modified asphalt, achieving stable gradation. This high-content waste tire rubber powder modified asphalt not only significantly increases the waste tire rubber powder content but also exhibits good product stability and can be stored for a longer period. The stability and durability of its modified asphalt mixture are significantly improved, further enhancing the road performance of rubber asphalt and extending the service life of the pavement.

This utility model relates to the field of cement production technology, and in particular to a cement kiln that uses waste tires as fuel for cement clinker calcination. It includes a base, with the main body of the cement kiln fixedly installed on the top of the base. A burner is fixedly installed on the right side of the base, and a feeding cylinder is fixedly installed on the top of the burner. A drive motor is fixedly connected to the top of the feeding cylinder, and the output end of the drive motor passes through the inner cavity of the feeding cylinder and is fixedly connected to a crushing shaft. This utility model can treat exhaust gas. During use, the exhaust pipe guides the exhaust gas, and during this guidance, the water in the recovery box recovers and treats the exhaust gas. Simultaneously, the exhaust gas is introduced into the treatment box, allowing the filter plate, filling box, and adsorption packing material to treat the exhaust gas. Furthermore, during use, the feeding cylinder, drive motor, crushing shaft, and spiral shaft guide tire material into the burner, enabling the use of waste tires as fuel.

The invention relates to the technical field of building waterproof materials, in particular to a modified asphalt waterproof coiled material and a preparation method thereof. The invention provides a modified asphalt waterproof coiled material. The modified asphalt waterproof coiled material comprises an anti-aging layer; the bonding layer is formed on the anti-aging layer; the anti-aging layer comprises a polyester base; the cross-linked modified asphalt coating is formed on the outer surface of the polyester base; the bonding layer is a non-crosslinking modified asphalt coating; the cross-linked modified asphalt coating is prepared from the following raw materials: 70 # asphalt, 200 # asphalt, SBS (Styrene Butadiene Styrene), waste tire powder, stone powder and a cross-linking agent; the non-crosslinking modified asphalt coating is prepared from the following raw materials: 70 # asphalt, 200 # asphalt, SBS (Styrene Butadiene Styrene), waste tire powder and stone powder. The modified asphalt waterproof coiled material provided by the invention can be quickly crosslinked, and has excellent bonding and peeling strength and thermal aging performance.

The invention relates to the field of construction materials, in particular to a backfill material composed of mixed industrial waste applied to a low load level, the backfill material composed of the mixed industrial waste applied to the low load level comprises broken tempered glass, old plastic and waste tire rubber particles according to the volume ratio of 6: (1-1.5): (2.5-3), the water content of the backfill material is 0.7-1.2%, and the water content of the backfill material is 0.5-1.5%. And when the backfill material is dumped to the backfill area, the ground clearance of the backfill material is 1.5-2m. The backfill material composed of the mixed industrial waste materials applied to the low load level is composed of pure waste materials, the waste materials meet environmental safety, the backfill material only needs to be directly poured into a backfill area at a certain height during use, the compaction degree can be larger than 90% without being compacted, the vertical strain of a formed backfill body under the load of 6 kPa is smaller than 0.42%, and the vertical strain of the backfill body under the load of 6 kPa is smaller than 0.42%. And the method can be applied to low-load-level engineering parts such as municipal pipe gallery backfilling and park greenway lower cushion layers.

The application relates to the technical field of waste tire treatment, and discloses a waste tire recycling treatment equipment, which comprises a fixed base, a disc for placing waste tires is rotationally arranged on the fixed base, a positioning frame capable of ascending and descending is arranged above the disc, a cutting knife for cutting the waste tires is rotationally arranged on the outer side of the positioning frame; a positioning block is fixed to the outer surface of the disc, a rotating shaft is rotationally arranged on the positioning block, a rotating plate is fixed to the circumference of the rotating shaft, an elastic movable rod is arranged in the disc, a spherical ball is fixed to the end of the movable rod, and a fixed disc is arranged in the disc. When the waste tires are cut, the rotating plate is rotated, the side ring can be lifted outward, the side ring at the cutting position can be kept at a certain angle with the tread, the cutting is facilitated, and the side ring and the tread can be separated more sufficiently.

The utility model relates to the technical field of separation treatment, especially to a waste and old tire steel wire separation equipment, including the separation machine main part, be provided with two extruding rollers that are used for crushing the tire waste on the steel wire surface on the separation machine main part and the guide seat that is located extruding roller top, be equipped with the scraper assembly that is used for stripping the broken tire waste simultaneously when extruding roller extruding the tire waste on the steel wire on the guide seat, the scraper assembly includes two stripping scrapers that blade surface opposite settings, wherein one stripping scraper is connected with the inner wall of guide seat, the utility model discloses setting scraper assembly on the guide seat, two extruding rollers extrude the tire waste, and the tire waste is driven to rotate by the extruding roller, and the stripping scraper of two blade surface opposite settings simultaneously scrapes the already crushed tire waste, and manual stripping of steel wire is not needed, which reduces the labor intensity of operating personnel and improves work efficiency.

The present application relates to coal gangue treatment technical field, provide a kind of coal gangue-containing biofuel particle and its preparation method and application.The biofuel particle provided by the present application includes: coal gangue powder 60~62%;14~15% of oil-stained mixture;High molecular waste powder 24~26%;The oil-stained mixture is waste engine oil and / or oil-stained material;The oil-stained material is obtained by crushing and drying in turn from swill.The oil-stained mixture used in the present application is rich in oil and fat, with high volatile matter, easy to ignite, coal gangue and waste tires and / or waste plastic bottles have high fixed carbon content, long burning time, so that the biofuel particle of the present application has high calorific value, stable combustion, can be used as alternative fuel to alleviate the problem of traditional fossil fuel shortage.The present application uses catering leftovers swill, waste tires and / or waste plastic bottles and coal gangue powder, to prepare biofuel particles, which solves the various hazards caused by long-term storage of coal gangue.

This utility model discloses a centralized waste tire processing and crushing device, relating to the field of waste recycling. The device includes a crushing unit and a blocking unit. The crushing unit comprises a crushing box, crushing components, and a feed inlet, the feed inlet being located at the top of the crushing box. The blocking unit includes multiple fixing bars, each fixedly positioned at one of the four corners of the top of the feed inlet. Movable rods are mounted on the fixing bars, and multiple blocking nets are connected between the movable rods. This centralized waste tire processing and crushing device, with multiple blocking nets connected by the movable rods and fixing bars, forms an adjustable protective barrier outside the loading position of the loader, effectively intercepting tires ejected during feeding and fragments splashed during crushing. Simultaneously, the movable rods can slide up and down along the fixing bars, their positions fixed by a collar threaded connection to the movable rods, adapting to varying tire feeding conditions and on-site protection requirements.

The invention discloses a method and a system for preparing a high-performance carbon material by using a waste tire one-step method, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: carrying out crushing, crushing and magnetic separation on the waste tire to obtain rubber powder; mixing the rubber powder with a solid activating agent in proportion; feeding the mixed material into a rotary kiln reactor in an inert atmosphere to carry out a one-step pyrolysis-activation reaction, and controlling the reaction process through temperature programming; and carrying out acid pickling, water washing, drying and grinding on the reacted crude product to obtain the high-performance carbon material. According to the method, pyrolysis and activation processes are integrated, the problems of high energy consumption, equipment corrosion and blockage and unstable product performance of a traditional two-step method are solved, the technological process is short, the energy consumption is low, the obtained carbon material is high in specific surface area and excellent in pore structure, the method is suitable for high-end fields such as supercapacitors, meanwhile, cyclic utilization of energy is achieved, and the method is economical and environmentally friendly.

The present application relates to the field of solid waste treatment and relates to a vertical reverse-flame heating cracking furnace device having spiral cooling fins. The device mainly comprises a hopper, a first feed valve, a buffer chamber, a second feed valve, a gas outlet, a cylinder body, main reverse-flame flues, spiral cooling fins, a manhole, steel wire discharge ports, filter screens, carbon black discharge ports, first discharge valves, carbon black storage tanks, second discharge valves, discharge pipes, water seal tanks, a rotary mechanism, an external flue, a converging flue, a support frame, motors, speed reducers, a support seat, a straight cylinder section, a base, a curved pusher, a lower collection box, a burner, a heat transfer pipe, a main flue, and an upper collection box. In the device of the present application, a reverse-flame device greatly increases the heat transfer area, thereby improving heat radiation efficiency, and a spiral feeding structure is beneficial to slowing down the falling speed of waste tires and prolongs the retention time, thereby effectively preventing rapid falling and bottom accumulation of tires, further improving cracking efficiency. The device of the present application is suitable for cracking of waste tires.

The application discloses a method for preparing a novel catalyst from pyrolysis carbon black of waste tires, and the method comprises the following steps: low-temperature rapid pyrolysis and high-temperature water washing by steam to obtain pyrolysis carbon black with low impurities, so that the waste of waste tires is avoided. The pyrolysis carbon black is loaded with active metals to prepare a novel catalyst, and the catalyst is used for catalyzing pyrolysis of waste plastics (polypropylene and polyethylene) rich in carbon and hydrogen to prepare hydrogen-rich synthesis gas to produce hydrogen, so that the recycling of solid waste is realized.

The invention relates to a method for producing a label-free aromatic process oil from a pyrolysis oil from used tires. The method has the steps of distilling the pyrolysis oil from used tires in a fractional distillation process, wherein at least one low-boiling fraction, at least one high-boiling fraction, and optionally an atmospheric residue are obtained; and selectively hydrogenating the at least one high-boiling fraction or the atmospheric residue with hydrogen, a label-free aromatic process oil being obtained. The invention further relates to a label-free aromatic process oil and to the use of the process oil in tires or rubber mixtures.

The invention provides a gradient crushing and multi-stage sorting treatment system and method for waste tires, and relates to the technical field of solid waste resourceful treatment. Comprising a first-stage coarse crushing unit, a second-stage intermediate crushing unit, a third-stage fine crushing unit, a first-stage magnetic separation device, a second-stage wind power separation device, a third-stage vibration screening device, a first inclined conveying belt, a first-stage magnetic separation device, a second horizontal conveying belt and a second-stage wind power separation device, and dust collecting openings are formed in the bottoms of machine shells of the first-stage coarse crushing unit, the second-stage intermediate crushing unit and the third-stage fine crushing unit. The efficient dissociation and precise separation of rubber, steel wires and fibers are realized through magnetic-wind-screen triple coupling separation and feedback adjustment of the particle size image recognition camera and in combination with linkage control of the steel wire residue detection unit and the temperature monitoring unit.

This utility model discloses a waste tire rubber granulation and reuse equipment, belonging to the technical field of processing equipment. It includes: a crushing box with a feed hopper at the top and a discharge port at the bottom side; a crushing assembly comprising two symmetrical rotating cylinders rotatably mounted on the inner wall of the crushing box, and crushing rollers fixed to the outer surfaces of the two rotating cylinders; and a screening assembly for screening and removing metal objects from the crushed rubber granules. By incorporating the crushing and screening assemblies, this utility model enables rapid crushing of waste tires and effective adsorption of falling metal objects by a cylindrical electromagnet under energization, thereby achieving effective screening and removal of metal objects from the crushed waste tire rubber granules. It has significant practical applications.

The utility model discloses a waste tire oil refining oil gas condensing device which comprises a condensing box body and a mounting shell mounted on the right side of the front end of the condensing box body, and a pre-cooling mechanism and a condensing mechanism are sequentially arranged in the condensing box body rightwards in the length direction of the condensing box body. The pre-cooling mechanism comprises a cooling coil, a guide cylinder, a cooling fan, a plurality of groups of rotating shafts, a plurality of grating plates, a mounting plate, an electric push rod, a fixed sliding rail and a strip-shaped rack; and the condensation mechanism comprises a cooling water tank, a cold water inlet and a hot water outlet. The condensation device has the beneficial effects that the pre-cooling mechanism arranged in the condensation box body adopts the cooling fan to be matched with the guide cylinder, air is used as a condensation medium, light oil gas in the cooling coil pipe is firstly subjected to air condensation, a grating plate can enable the air after heat exchange to be uniformly discharged, and the condensation mechanism adopts the cooling water tank, so that the heat exchange efficiency is improved. And light oil gas is subjected to secondary heat exchange condensation, so that the oil gas condensation recovery effect is improved.

This invention pertains to compositions of polymeric compounds, specifically a recycled rubber powder modified asphalt based on a renewable composite activator, its preparation method, and its application. The recycled rubber powder modified asphalt comprises a base asphalt and activated rubber powder in a mass ratio of 1:(0.2~0.3). The activated rubber powder comprises waste tire rubber powder and a composite activator in a mass ratio of 10:(0.8~1.5). The composite activator comprises an organic phase and an inorganic phase in a mass ratio of (1.5~3):1. The organic phase is a chitosan-amino acid derivative, and the inorganic phase is a layered bimetallic hydroxide. Compared with existing technologies, the rubber powder modified asphalt prepared by this invention exhibits good high-temperature storage stability and interfacial structural integrity, demonstrating excellent anti-aging properties and high-temperature rutting resistance during long-term service.

The application belongs to the technical field of rainwater recycling, and specifically discloses a rainwater collecting and purifying unit, a water resource saving and recycling irrigation system and a method. The collecting and purifying unit takes a tire ring cut from a waste tire as a carrier, is stably attached to a slope surface through a positioning rib, is filled with a filler in a cavity, and is provided with a water guide arranged in a corresponding area of the central hole and directly reaching a deep soil body. An intercepting filter screen is connected between adjacent tire rings, and is matched with an inverted V-shaped water stop plate and an elastic member to dynamically control the flood drainage rhythm. The irrigation system integrates the unit, a water pump, a controller and a soil sensor to build a system for collecting, purifying, dynamically draining and deep water supplementing rainwater on demand. The application realizes multi-target cooperation of rainwater utilization, ecological restoration and slope reinforcement, and significantly improves the rainwater recycling efficiency and the ecological restoration effect.