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248 results about "Mixed waste" patented technology

Mixed waste can refer to any combination of waste types with different properties. Typically commercial and municipal wastes are mixtures of plastics, metals, glass, biodegradable waste including paper and textiles along with other nondescript junk.

Low carbon footprint integrated process for recycle content olefin producers

Integrated processes and facilities for providing recycled content hydrocarbon products (r-products) from mixed waste plastic are provided. Carbon dioxide capture and energy recovery from one or more process streams described herein increase energy efficiency and help reduce overall environmental impact while producing valuable final products from chemically recycled waste plastic.
Owner:EXXONMOBIL PRODUCT SOLUTIONS CO

Treatment equipment for building mixed waste

The invention relates to treatment equipment for building mixed waste, which comprises a crushing mechanism, an extrusion mechanism and a screening mechanism, the crushing mechanism comprises a crushing structure and a counterattack structure, the bottom end of the crushing structure and the bottom end of the counterattack structure are clamped to form a discharge port, the crushing structure is in driving connection with a driving mechanism, and the counterattack structure is connected with a feeding mechanism; the extrusion mechanism is located below the discharge port and comprises at least two extrusion rollers which are arranged in parallel, and the two extrusion rollers are provided with extrusion teeth in an oppositely staggered mode; the screening mechanism comprises a screening roller and a separation mechanism, the screening roller is located below the extrusion mechanism, a plurality of strong magnetic structures are arranged in the circumferential direction of the screening roller, the screening roller is sequentially connected to the screening mechanism and the separation mechanism in the rotating direction, the separation mechanism is provided with the separation structure facing the screening roller, and the separation structure is connected to the periphery of the screening roller; the separating mechanism and the screening mechanism are connected with a recycling structure. The invention aims to quickly and stably treat the building waste and reduce the waste treatment cost.
Owner:SHENZHEN XINGZHONGHENG CONSTR ENG CO LTD

Industrial flue gas denitration treatment zero emission device

The utility model discloses an industrial flue gas denitration treatment zero-emission device, which relates to the technical field of industrial flue gas urea hydrolysis denitration water treatment, and comprises a hydrolyzer, the hydrolyzer is provided with a liquid inlet pipeline, a sewage discharge pipeline, a pressurization pipeline, a pressure relief pipeline and an ammonia conveying pipeline, the inner wall of the hydrolyzer is fixedly provided with a tube bundle, an inlet of the tube bundle is connected with a steam valve, and the steam valve is connected with a water outlet of the tube bundle. The tube bundle outlet is connected with a drain valve; according to the application, through the arrangement of the pressurization pipeline, the sewage discharge pipeline, the pressure relief pipeline and the dilution water pipeline, unreacted urea solution wastewater in the hydrolyzer is ensured to be pumped into the urea solution storage tank through pressurization, so that cyclic utilization is realized; when overpressure occurs, the ammonia gas mixer in the hydrolyzer can be transferred into the urea solution storage tank, and dilution water is used for dilution and spraying, so that the ammonia gas mixed waste gas can be effectively blended into the urea solution storage tank, the recycling of waste water and waste gas is realized, and the goal of zero emission is achieved. Compared with a traditional process, the device is simpler in structure and higher in practicability.
Owner:DALIAN BEST ENVIRONMENTAL ENG EQUIP CO LTD

Waste mixing device and waste mixing processing equipment

Waste mixing processing equipment has a waste mixing device and a feeding device. The waste mixing device has a major mixing set, a sub-mixing set, and an extruding-and-shaping set arranged in sequence. The major mixing device and the sub-mixing device each have a y-shaped mixing passage in a base and tapering toward a discharging port, a driving screw, and a driven screw obliquely disposed therein. Waste and additives / fillers are fed into the major mixing set by proportion, and are mixed sequentially through the major mixing set and the sub-mixing set. The waste and the additives / fillers are mixed, extruded, and conveyed by the driving screw and the driven screw in the y-shaped mixing passages of the major / sub-mixing sets, whereby mixing efficiency is improved.
Owner:YEAN HORNG MACHINERY CO LTD +1

Method for recovering multiple metals from sintering machine head ash

A method for recycling various metals from sintering machine head ash comprises the steps that S1, the sintering machine head ash is subjected to pulping and magnetic separation, and tailing pulp and iron-containing concentrate are separated; s2, settling the tailing pulp to obtain bottom mud and supernate, carrying out filter pressing on the bottom mud to obtain silver-containing tailings and beneficiation water, and mixing the supernate and the beneficiation water to obtain mixed waste liquid; s3, treating the mixed waste liquid to obtain a heavy filter cake and high-salt waste water, and concentrating and separating out salt to obtain potassium sodium salt, condensed water and high-chlorine waste liquid; and S4, leaching the silver-containing tailings by using the high-chlorine waste liquid to obtain a silver-rich liquid, and carrying out an iron powder replacement reaction to obtain crude silver. Through the steps of magnetic separation, sedimentation, leaching and replacement, iron, silver, potassium, sodium and other metals are efficiently recycled, the process is simplified, and the efficiency is improved.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD

Shot blasting screening and recycling device of shot blasting machine

The shot blasting screening and recycling device comprises the shot blasting machine and a screening box, a discharging pipe is arranged at the bottom of one side of the shot blasting machine, the other section of the discharging pipe and the top of the screening box are fixedly installed, a first screening plate is arranged in the screening box, and a second screening plate is arranged in the screening box. A second screening plate located below the first screening plate is arranged in the screening box, a supporting frame is fixedly installed at one end of the first screening plate, the bottom of the supporting frame is rotationally connected with a connecting rolling wheel, the bottom of the connecting rolling wheel makes rolling contact with the top of the second screening plate, and a rolling wheel frame is fixedly installed at one end of the bottom of the second screening plate; the bottom of the roller carrier is rotationally connected with supporting rollers, and the screening box is rotationally connected with a rotating shaft located below the roller carrier in a penetrating mode. And by arranging the first screening plate and the second screening plate, mixed waste conveyed by the discharging pipe and shot blasting are screened, the labor intensity of workers is reduced, and the screening efficiency is improved.
Owner:WUXI ZHUCAI TECH CO LTD

Recycled carbon fiber manufacturing apparatus and recycled carbon fiber manufacturing method using same

The present invention relates to an apparatus for manufacturing recycled carbon fibers and, more specifically, to an apparatus for manufacturing recycled carbon fibers using induction heat generation by high-frequency electromagnetic radiation of carbon fibers in carbon fiber mixed waste, and a method for manufacturing recycled carbon fibers using the same.
Owner:ILSUNGCOMPOSITES CO LTD

Intelligent catalytic thermal cracking reaction system and method for complex mixed waste plastics

The invention discloses an intelligent catalytic thermal cracking reaction system and method for complex mixed waste plastics, and belongs to the technical field of waste plastic resourceful treatment. The system comprises a feeding device, a high-pressure multi-section cracking reaction kettle, a spraying type heat exchange temperature control system, a heating system, a sensing and analyzing unit, an intelligent control system and a product condensation separation and utilization unit, the method specifically comprises the following steps: (1) pretreating and feeding raw materials; (2) multi-section temperature control cracking reaction; (3) intelligent feedback control; (4) the catalyst has a synergistic effect; and (5) product separation and recovery. According to the invention, a unique spraying type high-pressure multi-section temperature control system is combined with intelligent control of a rate matching algorithm, so that efficient, directional and stable cracking of complex mixed waste plastics is realized, the yield of high-value products such as light olefins, aromatic hydrocarbons and the like is remarkably improved, byproduct residues and energy consumption are reduced, and long-term continuous operation is realized.
Owner:北京绿安创华环保科技有限公司

Waste plastic film-forming thermal cracking device and method

The invention belongs to the technical field of waste plastic recovery, and discloses a waste plastic film-forming thermal cracking device and method.The waste plastic film-forming thermal cracking device comprises a pre-treatment assembly, a film-forming thermal cracking assembly and a post-treatment assembly which are sequentially communicated; the film-forming cracking assembly comprises a melting module communicated with the pretreatment assembly, and the melting module is communicated with a cracking module used for cracking plastic through a cleaning module; the cracking module comprises a cracking cylinder, a material distribution pipe is rotationally connected into the cracking cylinder, the outer wall of the material distribution pipe communicates with a plurality of spirally arranged flow distribution pipes, and the flow distribution pipes smear molten waste plastics on the inner wall of the cracking cylinder through smearing heads; a spiral scraping and washing plate is arranged on the shunting pipe, the shunting pipe and the scraping and washing plate are arranged in a staggered manner, and the scraping and washing plate is in sliding contact with the inner wall of the cracking cylinder. Modular design is adopted, through cooperative work of all the assemblies, waste plastic treatment can be continuously conducted, the device has the advantages of being high in efficiency, low in energy consumption and long in period operation, equipment faults are reduced, and the device is suitable for recycling of mixed waste plastic.
Owner:QINGDAO UNIV OF SCI & TECH

System and process for sorting and recovery of recyclable materials from mixed municipal solid waste

A system and process for sorting and recovery of recyclable materials, and in particular, sorting and recovery of recyclable materials from mixed waste comprising municipal solid waste in a materials recovery facility or “MRF” are provided. Advanced technology and machinery are integrated into a multi-step system and process that are designed to treat contaminated MSW streams to meet or exceed minimum material quality specifications while also reducing and minimizing headcount of sorter personnel. Because the mix of materials in MSW can be so varied and unpredictable, the system and process are designed to effectively sort and recover desired materials from MSW streams having a variety of material compositions.
Owner:WM INTELLECTUAL PROPERTY HOLDINGS LLC

Method for the separation and recovery of plastics and contaminants through multi-stage separation process

PCT designated stage expiredWO2025080898A1SievingGas current separationPolystyrenePolypropylene
Methods and systems presented herein are designed for processing waste material to extract plastics. An system and method for separating and recovering plastics from mixed waste feedstock are disclosed. The process involves initial size reduction, moisture removal, and sequential sink-float density separation at different specific gravities to separate low-density plastics such as polypropylene (PP) and polyethylene (PE) from denser materials like acrylonitrile butadiene styrene (ABS) and polystyrene (PS). The system is adaptable to various waste streams and feedstock compositions.
Owner:VALERIO THOMAS A

Self-adaptive model prediction control system for mixed plastic pyrolysis process

The embodiment of the invention relates to the technical field of industrial process control and mixed waste plastic pyrolysis, in particular to a self-adaptive model prediction control system for a mixed plastic pyrolysis process. The system comprises a state sensing unit, a key energy mapping unit, an enthalpy flow planning unit and an execution feedback unit. The system identifies a chemical reaction dominant type by analyzing a gas generation rate curve; the core of the method is that a reaction type is converted into a physical energy demand containing energy flow density and action time, and a three-dimensional dynamic enthalpy flow control instruction and a self-adaptive switching strategy are generated according to a differential energy barrier of polyvinyl chloride dechlorination and polyolefin cracking; according to the invention, conversion from single steady state control to space-time energy potential accurate matching is realized, and the problem of energy level mismatching is effectively avoided.
Owner:GREEN HARVEST ENERGY (BEIJING) TECHNOLOGY CO LTD

Hot flue gas backflow method for increasing temperature of waste gas at inlet of incinerator

The invention relates to the technical field of waste gas treatment, discloses a hot flue gas backflow method for increasing the temperature of waste gas at an inlet of an incinerator, and is applied to a heat accumulating type incinerator. According to the method, part of purified flue gas is led back to a waste gas inlet pipeline through a branch pipeline connected between a purified flue gas outlet and a waste gas inlet of the heat accumulating type incinerator; mixing the returned purified flue gas with the original waste gas; monitoring the temperature of the mixed waste gas in real time; and the backflow amount of the purified flue gas in the branch pipeline is dynamically adjusted according to the temperature. According to the method, the initial temperature of the waste gas entering the incinerator is increased, the risk that substances prone to crystallization are separated out due to low-temperature waste gas is effectively relieved, and heat accumulator smoothness and system operation stability are maintained. And by adjusting the temperature, the stability of the combustion working condition is ensured while excessive consumption of auxiliary fuel is avoided.
Owner:SHANDONG KANGYUAN ENVIRONMENTAL PROTECTION TECH CO LTD

Adaptive robotic system for selective opening of flexible containers in waste streams

A system for selectively opening flexible containers, such as plastic bags, in a mixed solid waste stream is disclosed, for use in Material Recovery Facilities (MRFs) or other contexts. The system may include a conveyor configured to transport waste, a sensor configured to detect the presence and position of flexible containers, and a multi-degree-of-freedom positioning device that moves a cutting tool relative to the containers. A processor, in communication with the sensor and positioning device, may calculate a cutting path and control the positioning device to execute the cutting operation. The system may utilize various cutting tools, including punches, blades, spades, shovels, and motorized saws, as well as non-contact fluid-based cutting technologies such as air or water jets. Additionally, the system can dynamically adjust the cutting trajectory based on real-time feedback and environmental conditions. The method provides an adaptable solution to open bags without damaging recyclable materials, improving throughput and reducing waste in mixed waste streams.
Owner:CP MANUFACTURING INC

Recovery and conversion reaction system for mixed waste plastics

The invention discloses a mixed waste plastic recovery and conversion reaction system which comprises a waste plastic raw material bin, a spiral feeder, a reaction furnace, a combustion chamber, a condensing device and an oil storage tank. The reaction furnace is sequentially provided with a feeding end, a reaction area and a discharging end, the reaction area comprises a plurality of reaction sections which are connected in series, the reaction sections are sequentially and continuously arranged along the length of a furnace body, and each reaction section is provided with a temperature control device which is independently opened and closed; the discharging end is communicated with a condensing device, and the condensing device is provided with a condensed kerosene outlet and a non-condensed pyrolysis gas outlet; the non-condensing pyrolysis gas outlet is divided into two paths, one path is communicated with the reaction furnace, and the other path is communicated with the combustion chamber. According to the invention, multiple reaction sections are combined and connected in series, multiple reaction mode combinations are provided, and high-value aviation kerosene can be produced. According to the invention, dechlorination can be effectively carried out before pyrolysis, and equipment corrosion, catalyst poisoning, secondary pollution and the like are prevented; according to the invention, the non-condensed gas is recovered for hydrogenation upgrading of products and self-heating of the system, so that energy is saved.
Owner:ZHEJIANG UNIV

Man-machine interaction waste plastic fine sorting equipment and method

The invention discloses man-machine interaction waste plastic fine sorting equipment and method, and relates to the technical field of waste plastic treatment, the man-machine interaction waste plastic fine sorting equipment comprises a base, and a screening box is fixedly mounted at the top of the base. A proper liquid medium can be injected into the screening box, it is ensured that waste plastics made of different materials can show obvious floating and sinking differences in the liquid medium by means of the density differences of the waste plastics made of the different materials, the waste plastics which float above liquid and are small in density can be fished out through the fishing mechanism, and the screening efficiency is improved. And waste plastics with large density are settled at the bottom of the screening box and then taken out through cooperation of a pushing and extruding mechanism, a first air cylinder and a discharging plate, so that separation of the waste plastics of different materials is achieved, the waste plastics of different sizes can be screened through the arrangement of a shaking mechanism, a screening hopper and other structures, and through cooperation of all the assemblies, the screening efficiency is improved. Therefore, the fine screening effect of the size of the mixed waste plastics made of different materials is achieved.
Owner:BEIJING XINYI RESOURCES SCI & TECH CO LTD

Synthesizer for acetoxyacetyl chloride

The utility model provides an acetoxyacetyl chloride synthesizer which comprises a first synthesis kettle and a second synthesis kettle, the top of the first synthesis kettle and the top of the second synthesis kettle are both communicated with a first metering tank and a second metering tank through pipelines, and the first metering tank and the second metering tank are both provided with feeding pumps. The bottom of the first synthesis kettle and the bottom of the second synthesis kettle are communicated with a rectifying kettle through pipelines, a rectifying assembly is arranged at the top of the rectifying kettle, and a discharge port is formed in the bottom of the rectifying kettle; the whole device is simple in structure, the two synthesis kettles can be alternately used, so that the production efficiency is effectively improved, acidic mixed waste gases such as sulfur dioxide and hydrogen chloride are not generated, the utilization rate of raw materials theoretically reaches 100%, the device completely conforms to an environment-friendly and pollution-free green process, the reaction process is mild, and the production cost is low. The reaction speed can be controlled by controlling the temperature and the catalyst input amount, the production operation is safe, the production cost is low, and the benefit is high.
Owner:LIANYUNGANG BAIYU BIOTECHNOLOGY CO LTD

Method for recycling PA66 / PET (Polyamide 66 / Polyethylene Terephthalate) mixed waste

The invention discloses a method for recycling PA66 / PET (Polyamide 66 / Polyethylene Terephthalate) mixed waste. The recycling and regenerating method comprises the following steps: under the action of a catalyst, carrying out hydrolysis reaction on the PA66 / PET mixed waste; wherein the catalyst is adipic acid, and the use amount of the catalyst is 10-30 wt% of the amount of the mixed waste according to the mass percentage. An adipic acid autocatalysis system is adopted, efficient hydrolysis of PA66 and PET is achieved at the same time under the single reaction condition, the defect that step-by-step treatment is needed in a traditional process is overcome, the hydrolysis rate of PET is larger than or equal to 85%, the hydrolysis rate of PA66 is 50-70%, hydrolysis products can be further polymerized into polyesteramide with excellent mechanical performance and thermal stability, and the preparation method is suitable for industrial production. And the spanning from degradation recovery to upgrading regeneration is realized.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Electroplating waste gas treatment structure

The utility model relates to the field of electroplating waste gas treatment, and discloses an electroplating waste gas treatment structure which comprises a reaction tank, a top cover is rotatably connected to the top of the outer wall of the reaction tank, an exhaust pipe is fixedly connected to the interior of the top cover, a motor is fixedly connected to the outer wall of the top cover, and a rotating shaft is fixedly connected to the output end of the motor. Stirring blades are fixedly connected to the outer wall of the rotating shaft, a first scraper is fixedly connected to the outer wall of the rotating shaft, a connecting rod is fixedly connected to the outer wall of the rotating shaft, a sleeve plate is fixedly connected to the outer wall of the connecting rod, a second scraper is slidably connected to the interior of the sleeve plate, and a spring is arranged in the sleeve plate. According to the waste gas treatment structure disclosed by the utility model, the motor drives the rotating shaft to rotate, so that the rotating shaft can drive the stirring blades and the second scraping plate to rotate, and then the waste gas is filtered and adsorbed by the filter plate and the activated carbon plate, so that the problem that the waste gas cannot be fully purified and treated when the mixed waste gas is treated by the existing waste gas treatment structure is solved.
Owner:XIAMEN GAOHO TECH CO LTD

Pickling process for preparing high-purity quartz sand by using mixed waste acid of hydrofluoric acid and hydrochloric acid

The invention discloses a pickling process for preparing high-purity quartz sand by using mixed waste acid of hydrofluoric acid and hydrochloric acid, and belongs to the technical field of purification production of high-purity quartz sand. Comprising the steps of ore selection, surface cleaning, jaw breaking, hammer breaking, screening, magnetic separation, impurity removal through flotation, gas-liquid inclusion removal through high-temperature microwaves, primary filtration of waste acid, fine filtration of waste acid, compounding of mixed waste acid, calcination, magnetic separation and the like. The pickling process has high purification efficiency, the acid liquor consumption can be further reduced by combining the recycling of the waste acid, the comprehensive cost is lower than that of the traditional process, the acid leaching waste liquor of the process can be repeatedly used for 2-3 times by supplementing 5-8% of the new acid after simple pH regulation, the comprehensive acid consumption is reduced by 55% or above, less pollutant emission is realized, and the method is suitable for industrial production. The treatment cost of the waste acid is reduced.
Owner:ANHUI VICTORY NEW MATERIAL TECH CO LTD

Shredding device for waste metal recovery

The utility model discloses a chopping device for waste metal recycling, relates to the technical field of waste metal chopping, and can solve the technical problems that in the prior art, due to tight combination of metal and plastic, after waste metal is crushed, a large amount of waste plastic left on the surface of the waste metal can be mixed with the crushed metal, and the waste metal is damaged. And in order to achieve separation of mixed waste plastic and crushed metal, an electromagnet is installed on the side face of a second separation hopper. And when the waste plastics and the crushed metal are crushed, guided by the guide plate and slide down along the inner wall of the second separation hopper, the electromagnet plays a role to adsorb the crushed metal material. And after all the waste plastics completely fall off, the electromagnet is demagnetized by operating the control assembly, so that the adsorbed metal fragments fall off, effective separation of the metal fragments and the electromagnets is realized, the working efficiency is improved, and the overall operation difficulty is reduced.
Owner:QIANWEI NANAN MASCH CO LTD

Combination heat and power air supply system of fuel cell

The utility model provides a combined heat and power supply air supply system of a fuel cell, which utilizes a byproduct high-pressure pure oxygen generated by hydrogen production through water electrolysis as a working fluid, realizes air humidification and cyclic utilization of electric pile waste gas through combination of an injection device and an air compressor branch, reduces the use of a humidifier and an intercooler, and reduces the complexity and air flow resistance of the system. The system comprises an air inlet main path, an oxygen inlet branch path, an air inlet branch path and an injection device, waste oxygen is introduced into the oxygen inlet branch path, the air inlet branch path is provided with an air compressor, and the injection device mixes the waste oxygen and fresh air and supplies the mixed waste oxygen and fresh air into a galvanic pile. The air outlet pipeline is connected with the water segregator, waste gas is recycled to humidify fresh air, and a backflow adjusting valve is arranged. The system reduces the power consumption of the air compressor and improves the cogeneration efficiency of the fuel cell.
Owner:ZHEJIANG TIANNENG HYDROGEN ENERGY TECH CO LTD

A crushed stone asphalt mixed waste sorting device

The invention relates to the technical field of crushed asphalt waste sorting, and discloses a crushed asphalt mixed waste sorting device, wherein a conveyor belt assembly driven by a motor is arranged inside a conveying trough, so that the conveyor belt assembly conveys the crushed asphalt mixed waste to a uniform distribution assembly arranged inside the front end of the conveying trough; an air blowing assembly of the invention blows air to the crushed asphalt mixed waste on the conveyor belt assembly, blows up impurities mixed in the crushed asphalt mixed waste and enters into an impurity collecting assembly on the conveying trough; the uniform distribution assembly reciprocates left and right, so that the uniform distribution assembly conveys the crushed asphalt mixed waste to a screen in a water washing trough through a material guide trough at the front end of the conveying trough, which can prevent the lighter parts of the crushed asphalt mixed waste from accumulating inside, so that the lighter parts of the crushed asphalt mixed waste can quickly float on the surface of the clear water in the water washing trough, and then the waste floating on the surface of the clear water can be quickly discharged from the water washing trough.
Owner:广东路华沥青工程有限公司

Waste recycling device after waste gas treatment

A waste recycling device after waste gas treatment comprises a washing tower, an alkali washing circulating tank, an arsenic removal liquid preparation barrel, a motor supporting rod, a motor, a rotating shaft, stirring blades, a rotating rod, a scraping plate, a mixer and a solid-liquid mixing grinding machine. The sulfur-containing waste gas washing liquid obtained after waste gas treatment can be conveyed into the arsenic removal liquid preparation barrel through the solid-liquid mixing pump to be mixed and blended with the arsenic removal agent, the blended arsenic removal agent is mixed with phosphoric acid through the mixer and then enters the arsenic removal system, waste liquid recycling is achieved, the use amount of the arsenic removal agent is reduced, cost is reduced, and the arsenic removal efficiency is improved. When sulfur-containing solid waste is generated in the waste gas treatment process, the generated solid-liquid mixed waste can be conveyed into the solid-liquid mixing grinding machine through the solid-liquid mixing pump to be ground and then conveyed into the arsenic removal liquid preparation barrel to be mixed and blended with the arsenic removal agent, and recycling of the solid waste is achieved as well.
Owner:YANGZHOU RUIYANG CHEM IND CO LTD

Waste screening device and vertical mill ore grinding system

The utility model discloses a waste screening device and a vertical mill ore grinding system in the technical field of ore grinding, which comprises a casing, a mixed waste inlet arranged at the top of the casing, an oversize material outlet and an undersize material outlet respectively arranged at two sides of the bottom of the casing, a jolting screening ramp and a fixed guide ramp arranged in the casing, the jolting screening ramp is composed of a plurality of jolting screen units which are obliquely arranged and vertically spliced in a staggered mode, each jolting screen unit comprises a screen plate, the upper end of each screen plate is hinged to the machine shell, the lower end of each screen plate is connected with a jolting driving device, and the jolting driving devices drive the lower ends of the screen plates to move in a frequency mode to achieve material screening. Not only can the material screening efficiency be improved, but also nails and hard impurities clamped in the screen holes in the screen plate can be shaken out, and the screen holes are prevented from being blocked; the vertical grinding system is additionally provided with the waste screening device, impurities are prevented from being enriched in the system, and it is guaranteed that the vertical roller mill operates stably for a long time.
Owner:CHINALCO SOUTHEAST COPPER CO LTD

Sand blasting dust separation device

The utility model discloses a sand blasting dust separation device, a feeding hole of the sand blasting dust separation device is connected with sand blasting equipment, and the sand blasting dust separation device comprises a separated sand flowing groove and a separator, a feeding port of the separating type quicksand groove is communicated with sand blasting equipment, the separating type quicksand groove can separate sundries, a discharging port of the separating type quicksand groove is communicated with a feeding port of the separator, the separator is arranged below the separating type quicksand groove, and dust of grinding materials is separated through the separator and can be collected. According to the sand blasting dust separation device, mixed waste materials are separated through the arrangement of the separation type sand flowing groove, and waste caused by the fact that the abrasive materials which can be used are mixed into waste abrasive materials is avoided. And negative-pressure separation is carried out through the negative-pressure separation area in the separator, so that the quality of the recycled grinding materials is guaranteed, and dust pollution is avoided. And moreover, the separator can adjust, adsorb and separate abrasives with different specific gravities according to the characteristic that different abrasives have different specific gravities, so that the applicability of the sand blasting dust separation device is improved.
Owner:HENGYANG KEYING STEEL PIPE CO LTD

Method and apparatus for producing hydrocarbons

Disclosed is a method for producing hydrocarbons, the method comprising the steps of: S1) thermally decomposing a mixed waste to produce a first mixed gas; S2) steam-reforming the first mixed gas, removed of impurities, in a first fluidized bed reactor to produce a second mixed gas; S3) separating the second mixed gas into a first stream containing carbon dioxide and a second stream containing hydrogen and carbon monoxide; S4) introducing the first stream, separated in step S3), into a second fluidized bed reactor and converting the first stream into carbon monoxide through a reverse Boudouard reaction; S5) mixing the second stream and the carbon monoxide, converted in step S4), to produce a third mixed gas, and producing a synthesis gas (Syngas) through a water-gas conversion reaction using the third mixed gas; and S6) producing hydrocarbons from the synthetic gas through a catalytic reaction.
Owner:SK INNOVATION CO LTD

Method for Disposing Mud Based on Measurement of Radioactivity of In-Situ Leaching Uranium Drilling Mud

The present invention relates to a mud disposal method and system for calculating the radioactive activity of borehole mud in in-situ leaching uranium mining. The method includes: establishing a calculation model for the radioactive activity of borehole mud in in-situ leaching uranium mining based on the principle of material balance; for the mud that is not recycled, predicting the radioactive activity level of the mud according to the radioactive activity calculation model; for the recycled mud, predicting the radioactive activity level of the mud after recycling according to the radioactive activity calculation model and the mud recycling rate; determining the disposal method of the mud according to whether the radioactive activity level exceeds the radioactive activity exemption level. By using the method of the present invention, it is possible to pre-judge before the project implementation whether the radioactive activity level of the mixed waste drilling mud exceeds the radioactive activity exemption level that is exempt from radiation protection supervision, and accordingly determine the disposal method of the mud, so as to classify and dispose of the mud, improve the level of radiation protection and ecological environment protection, and enhance the effectiveness and pertinence of supervision.
Owner:BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY

Emptying waste gas treatment device in chemical synthesis

The utility model discloses an emptying waste gas treatment device in chemical synthesis, and relates to the technical field of waste gas treatment. Comprising a workbench, a cleaning mechanism is arranged on one side of the workbench and comprises a cleaning tank, a through hole is formed in one side of the cleaning tank, and an air inlet pipe is fixedly connected into the through hole. Through the arrangement of the cleaning mechanism and the filtering mechanism, in the using process, firstly, cleaning liquid is added into the water tank through the water inlet pipe, then the booster pump is started to spray the cleaning liquid into the cleaning tank through the spraying pipe and the nozzle, and in the process, waste gas enters the cleaning tank through the gas inlet pipe; meanwhile, a servo motor on a mounting plate drives a filter plate to rotate to quickly mix the waste gas and the cleaning solution, finally, a twisting cover is manually opened to discharge generated waste water through a drain pipe, the mixed waste gas enters a filter mechanism through a connecting pipe, the device can uniformly cover the waste gas, the contact between the waste gas and the cleaning solution is enhanced, and the waste gas treatment efficiency is improved.
Owner:HUAIBEI LONGXI BIOTECHNOLOGY CO LTD

High-concentration mixed type waste gas treatment device with recovery function

The utility model discloses a high-concentration mixed type waste gas treatment device with a recovery function, which comprises an alkaline washing tower, an outlet of the alkaline washing tower is connected with an inlet of a water washing tower, an outlet of the water washing tower is sequentially connected with a humidifying surface air cooler, a filter and a primary fan, and an outlet of the primary fan is respectively connected with an adsorber I, an adsorber II and an adsorber III through a first pipeline. The first adsorber, the second adsorber and the third adsorber are sequentially connected with the first-stage condenser, the second-stage condenser and the layering tank through a first pipeline, the first adsorber, the second adsorber and the third adsorber are sequentially connected with the first-stage condenser, the second-stage condenser and the layering tank through a second pipeline, and the first adsorber, the second adsorber and the third adsorber are connected with the steam device through a third pipeline. According to the waste gas treatment device, multiple purification of multiple waste gas components is achieved, recovery of high-concentration waste gas components is achieved by arranging the steam device, the first-stage condenser, the second-stage condenser and the layering groove, the whole device reduces the waste gas treatment operation and maintenance cost, and emission of carbon dioxide is reduced.
Owner:BEIJING MINGTAILAI ENVIRONMENTAL PROTECTION TECH