200results about "Waste processing" patented technology

This invention belongs to the field of photovoltaic recycling, specifically relating to a method for the comprehensive recycling of waste photovoltaic modules, comprising: disassembling waste photovoltaic panels to separate photovoltaic laminates, aluminum frames, and junction boxes; crushing the photovoltaic laminates to obtain photovoltaic crushed material; subjecting the photovoltaic crushed material to a decomposition reaction to break down the EVA adhesive into non-adhesive molecules; sorting the decomposition reaction-treated photovoltaic crushed material to separate glass, plastic backsheets, and copper powder to obtain a silicon powder mixture; dissolving the silicon powder mixture to obtain a silver-containing solution and silicon powder precipitate; separating the silicon powder precipitate and converting the silver-containing solution into elemental silver for recycling. This invention performs in-depth processing based on physical sorting, further purifying the silicon powder while obtaining valuable metallic silver, increasing economic benefits, reducing recycling costs, and achieving efficient and green recycling of photovoltaic modules.

The material sorting equipment comprises a first granularity sorting device, the first granularity sorting device is connected with a shape sorting device and a specific gravity sorting device, and the shape sorting device is connected with the first granularity sorting device; the specific gravity sorting device is connected with the second granularity sorting device, and the second granularity sorting device is connected with the first optical characteristic sorting device and the second optical characteristic sorting device. The method comprises the steps that (1) the waste assemblies enter the first granularity sorting device to be sorted; (2) the shape sorting device sorts out metal strips, and the step (1) is repeated for other substances; (3) a glass mixture and a silicon wafer mixture are sorted out by the specific gravity sorting device and enter a second granularity sorting device and a second optical characteristic sorting device respectively; 4, the silicon wafer mixture is sorted by the second granularity sorting device and enters the first optical characteristic sorting device.The device has the advantages that the recovery speed and the recovery rate of glass, silicon wafers and metal strip materials in photovoltaic module recovery are increased.

A process is disclosed for recovering soft poly(vinyl butyral) from a plasticized poly(vinyl butyral) multilayer sheet comprising stiff poly(vinyl butyral) and soft poly(vinyl butyral). The multilayer sheet. which may be scrap or recycled material. is first converted to a granulate form and then treated with plasticizer. This plasticizer treatment serves to remove the soft poly(vinyl butyral) component from the granulate. but thereby provides a varnish comprising the soft poly(vinyl butyral) mixed with excess plasticizer. This varnish is however highly viscous and thus difficult to handle or mechanically process. The present disclosure provides a solution to this handling problem by the addition of soft poly(vinyl butyral) having a lower concentration of plasticizer to the varnish. until a product is obtained having a sufficiently low concentration of plasticizer to render the product capable of mechanical processing. for example pelletizing. The resulting product can then be utilized to form soft poly(vinyl butyral) sheets, thereby improving the recyclability of scrap multilayer poly(vinyl butyral) materials.

A battery recycling system according to the present disclosure includes: a primary crushing device configured to crush a case of a discharged secondary battery to expose an electrode material; an electrolytic solution recovery device configured to heat the secondary battery whose electrode material has been exposed under a reduced-pressure environment to recover an electrolytic solution contained in the electrode material; a secondary crushing device configured to further crush the secondary battery whose electrolytic solution has been recovered; a sorting device configured to sort crushed objects of the secondary battery; and an adjustment device configured to adjust an atmosphere in each of the devices to an N2 atmosphere, and further includes: a plurality of first sensors configured to detect oxygen concentrations in the respective devices; a second sensor; and a control device that causes the second sensor to selectively detect the oxygen concentration in each of the devices.

The utility model discloses a waste solar panel pyrolysis recovery system, which relates to the technical field of battery panel recovery, and comprises a pyrolysis furnace, a water-cooling spiral, a gravity separator, a slag bin, a pretreatment device, a condenser, a secondary combustion chamber, a heat exchanger, a tail gas purifier, an induced draft fan, a chimney and a liquid storage tank, the pretreatment device is connected to the input end of the pyrolyzing furnace, the input end of the condenser is connected with the output end of the pyrolyzing furnace, the non-condensable gas output end of the condenser is connected with the input end of the secondary combustion chamber, the condenser, the secondary combustion chamber, the heat exchanger, the tail gas purifier, the induced draft fan and the chimney are sequentially connected, and the condensate output end of the condenser is connected with the liquid storage tank. According to the waste solar panel pyrolysis recovery system provided by the utility model, the waste solar panel can be effectively recovered and treated, the resource recovery utilization rate can be improved, the adverse effect on the environment can be reduced, and a powerful guarantee is provided for green and efficient recovery and utilization of the waste solar panel.

A solar panel disassembling apparatus includes a supporting plate that supports the bottom of a solar panel so that the top surface thereof is in contact with a glass plate, a moving scraper module that includes a first body, a first elevator, and a blade connected to the first elevator and changing in height with respect to the supporting plate for scraping the stacked film, a moving pressing module that includes a second body, a second elevator, and a pressing unit connected to the second elevator and changing in height with respect to the supporting plate, that is disposed forward in the forward movement direction of the moving scraper module, and that presses and aligns the stacked film using the pressing unit ahead of the moving scraper module, and a bending guide plate disposed over the blade, and rolling and keeping therein the stacked film separated from the blade.

Provided are a gasification furnace operating method, a gasification furnace, a two-stage gasification apparatus, a gasification method for an organic raw material, and a two-stage gasification method for organic waste that make it possible to stably operate a gasification furnace over a long period of time. The present invention provides a gasification furnace operating method including, in a gasification furnace into which an organic raw material is introduced and that produces gas and slag, directly or indirectly introducing an alkali metal-containing compound into the gasification furnace to reduce the viscosity of the slag.

This invention relates to a resin-based nano-iron oxide-enhanced microbial preparation, a method for preparing the same, and its applications. In this invention, after mixing resin-based nano-iron oxide, the microbial preparation, and food waste, at room temperature, the resin-based nano-iron oxide enhances the decomposition of food waste by the microbial preparation through multiple actions, including promoting microbial growth, inducing high activity of functional proteases, and accelerating electron transport processes. The alternating aerobic and anaerobic environments allow the microbial preparation to exert its full effect, resulting in high biochemical activity of metabolites. A reaction under room temperature conditions of 3 to 5 hours can achieve a food waste reduction rate of 80% to 99%. This invention is technically simple, consumes little energy, does not cause secondary pollution, and effectively achieves the goals of food waste reduction, resource recovery, and detoxification.

A crusher (1) comprising: a ball mill (2) having a steel drum (3) containing a plurality of steel balls (4) therein, configured to obtain powder having a particle size of 25 μm to 500 μm, preferably 200 μm to 300 μm, i.e., the main size of each powder particle being 25 μm to 500 μm, preferably 200 μm to 300 μm; and a refrigeration circuit (6) for refrigerating at least a portion of the steel drum (3), comprising a refrigeration unit (5) suitable for supplying a carrier fluid at a temperature of -150 degrees or less, a sleeve (7) for the inflow of the carrier fluid supplied by the refrigeration unit (5), and a discharge sleeve (9) for complete circulation in the refrigeration circuit (6) and discharge of the carrier fluid at the end of transport to the suction duct (10) of the refrigeration unit (5).

A method and system for separating materials using a combination of screen beds and gravity separators is included. Materials are collected from the waste stream and pass through a screen. The collected larger materials are then directed to a first gravity separator with a specific gravity. Plastics are recovered and residual metals are recovered.

A method of forming an ionomer blend during a process of recycling waste solid ionomer material, the method comprising: heating the waste solid ionomer material in a solvent to disperse the waste solid ionomer material; and mixing ionomer from the waste solid ionomer material with a second ionomer material to co-mingle ionomer from the waste solid ionomer material with ionomer from the second ionomer material forming a co-mingled ionomer blend during the process of recycling the waste solid ionomer material.

A solar panel recycling mechanism, which uses a material picking unit to pick up waste solar panels for a frame unloading unit to receive waste solar panels, and uses a robot arm to dismantle the frame of each waste solar panel for a feeding channel to receive each waste solar panel after the frame is removed, so that an inner crushing zone can press the glass panel on each waste solar panel and a discharge port can send each waste solar panel with the removed glass panel to a placement area outside for stacking. A operation unit of a control area controls a power supply unit to provide the material picking unit, frame unloading unit, glass removal unit and placement area with the required power, and also controls the operation of each unit to process waste solar panels, so as to achieve the purpose of quickly dismantling waste solar panels.

Disclosed is a device for processing plastic materials, having a shredding unit, a conveying unit having a screw (7), and an extruder, having at least one extruder screw (11), adjoining the screw, wherein the central longitudinal axis (3) of the screw (7) is oriented at an angle to the central longitudinal axis (10) of the extruder screw (11), in particular at an angle of 80° to 100°, preferably 90°, and the longitudinal axis (3) of the screw (7) is offset with respect to the longitudinal axis (10) of the extruder screw (11) by an offset (v) in the direction of the direction of rotation (12) of the extruder screw (11) at or in the region of the discharge opening (8) or the intake opening (16) of the conveying unit.

Provided is a method for producing a recycled resin from a waste resin composition, wherein the waste resin composition comprises: a thermoplastic resin B which contains one or more thermoplastic resins that are selected from the group consisting of a thermoplastic resin B1 that contains a structural unit (b-1) which is derived from a monomer represented by general formula (1-1), a thermoplastic resin B2 that contains a structural unit (b-2) which is derived from a monomer represented by general formula (1-2), and a thermoplastic resin B3 that contains a structural unit (b-3) which is derived from a monomer represented by general formula (1-3); and at least one of a thermoplastic resin C which contains only a structural unit (c) that is derived from a monomer represented by general formula (2), and a thermoplastic resin D which contains at least one structural unit that is selected from the group consisting of general formulae (7) to (10). This method comprises: pulverizing the waste resin composition so as to obtain a pulverized material; and sorting out the thermoplastic resin B, and the thermoplastic resin C and the thermoplastic resin D by means of UV.

The invention relates to a method for processing a solar module, wherein the solar module has at least one silicon base body with a charge-doped zone, a hole-doped zone and an upper side, metallic conductor tracks on the upper side of the base body, a surface layer that is at least partially transparent to visible light, but preferably transparent to visible light, and at least one adhesive layer arranged between the surface layer and the conductor tracks, the method comprising the following steps:a) heating the at least one adhesive layer,b) removing the cover layer from the base body andc) mechanically removing the conductor tracks and collecting the machined material.

Provided is a coating film removing equipment that is a device including: a cleaning tank; a supply device configured to supply a cleaning liquid to the cleaning tank; a conveyance device configured to convey a coated film in a longitudinal direction of the coated film such that the coated film passes through the cleaning tank; a suction box that is disposed in the cleaning tank and surrounds a part of a conveyance path of the coated film with a gap through which a film can pass; a removing mechanism disposed in the suction box, the removing mechanism being configured to remove a coating film from the coated film; and a discharge device for discharging the cleaning liquid and the removed coating film from the suction box to an outside of the cleaning tank.

The present invention relates to a method for treatment of poly hydroxy alkanoate (PHA) containing post-consumer product, the method comprising contacting a post-consumer product with a polypeptide that can catalyze degradation of the PHA, the contact taking place at a temperature at least 40° C. and in the presence of salt at a concentration of 1 M or greater. In a specific embodiment, the polypeptide is a wild-type PHA depolymerase expressed by a halophilic microorganism or a modified PHA depolymerase that includes one or more single-site mutations as compared to the wild-type PHA depolymerase. In another specific embodiment, the polypeptide comprising a modified poly hydroxy butyrate (PHB) depolymerase comprising one or more single-site mutations as compared to SEQ ID NO: 1, and the modified PHB depolymerase having a solubility of 10 mg / L or greater. The present invention also relates to a host cell transformed to express a polypeptide that catalyzes degradation of a PHA in the presence of salt at a concentration of 1 M or greater, wherein the host cell is selected from an E. coli cell or a halophilic microorganism.

A battery recycling system (1) includes: a primary crushing device (12) configured to crush a case of a discharged secondary battery (TG); an electrolytic solution recovery device (13) configured to heat the secondary battery whose electrode material has been exposed under a reduced-pressure environment to recover an electrolytic solution; a secondary crushing device (14) configured to further crush the secondary battery whose electrolytic solution has been recovered; a sorting device (15) configured to sort crushed objects of the secondary battery; and an adjustment device (16) configured to adjust an atmosphere in each of the devices to an N2 atmosphere, and further includes: a plurality of first sensors (S1, S2, S3, S4) configured to detect oxygen concentrations in the respective devices; a second sensor (S5); and a control device (17) that causes the second sensor (S5) to selectively detect the oxygen concentration in each of the devices.

Provided are a method for recycling and effectively using a waste emitted from a cement production process, in which calcium carbonate produced using a waste from a cement production process and hydrochloric acid produced in the process are effectively used for preparation of a vinyl chloride resin or the like, and a system that is useful for implementing the method. A method for reusing and recycling a waste generated from a cement production process, includes: electrodialyzing an aqueous solution containing potassium chloride to produce aqueous hydrochloric acid and an aqueous solution containing potassium hydroxide, the aqueous solution containing potassium chloride being obtained by washing chlorine bypass dust generated from a cement production step; adding a part of the aqueous hydrochloric acid to a calcium-containing waste to produce an aqueous solution containing a calcium ion; adjusting a pH of the aqueous solution containing a calcium ion and separating impurities; bringing carbon dioxide emitted from a cement production step into contact with the aqueous solution containing potassium hydroxide obtained through the electrodialysis to produce an aqueous solution containing potassium carbonate; and producing calcium carbonate and an aqueous solution containing potassium chloride using the aqueous solution containing a calcium ion having passed through the separation step and the potassium carbonate, in which a part of the aqueous hydrochloric acid obtained through the electrodialysis and the produced calcium carbonate are used for preparing a vinyl chloride resin or the like.

A process for recovering flexible poly(vinyl butyral) from poly(vinyl butyral) granules containing rigid poly(vinyl butyral) and flexible poly(vinyl butyral) is disclosed, the process comprising the steps of: adding an additional plasticizer to the poly(vinyl butyral) granules to remove at least a portion of the flexible poly(vinyl butyral) from the poly(vinyl butyral) granules to obtain (i) rigid poly(vinyl butyral)-rich granules and (ii) a varnish of flexible poly(vinyl butyral) and the additional plasticizer; physically separating the granules from the varnish of flexible poly(vinyl butyral) and the additional plasticizer; and adding water to the varnish to obtain a plasticizer layer and a water / flexible poly(vinyl butyral) / plasticizer layer.

Disclosed is a method for processing a plastic feedstock, the method comprising: (a) a dissolution step comprising contacting the feedstock with a dissolution solvent at a dissolution temperature of 100°C to 300°C and a dissolution pressure of 1 to 20.0 MPa, the dissolution solvent having a boiling point of -50°C to 250°C, to obtain a crude polymer solution; (b) an adsorption step comprising contacting the crude polymer solution with an adsorbent at a temperature of 100 to 300°C and a pressure of 1.0 to 20.0 MPa, to obtain a purified polymer solution; and then (c) a polymer recovery step, to obtain at least a solvent-poor fraction and a purified polymer fraction.

Disclosed herein is a process for producing an animal feed having a defined nutritional profile from food waste. The process comprises accumulating successive batches of a plurality of food wastes that have been macerated and dehydrated, every batch of each of the plurality of food wastes having been sourced from the same one of a plurality of categorized producers of food waste and maintained separately at all times from others of the plurality of food wastes; independently mixing each of the accumulated batches of the macerated and dehydrated food wastes to produce a plurality of homogenized ingredients for an animal feed; analysing each of the homogenized ingredients to determine one or more nutritional parameters of the ingredient; and blending two or more of the homogenized ingredients to produce the animal feed having a defined nutritional profile.

In a first aspect, the invention relates to a process for discoloration of a colored polymeric material comprising: (i) providing a colored polymeric material and providing a solvent comprising gamma-valerolactone; (ii) contacting the colored polymeric material with a solvent comprising gamma-valerolactone at a temperature in the range of from 40 to 170°C, thereby obtaining a solvent, which is enriched in colorant compared to the solvent provided in (i), and a polymeric material, which is depleted in colorant compared to the colored polymeric material provided in (i). A second aspect of the invention is related to a polymeric material, which is depleted in colorant obtained or obtainable from the process of the first aspect. In a third aspect, the invention is related to a use of the polymeric material, which is depleted in colorant according to the second aspect for textile applications, fiber applications, packaging applications or plastic applications. A fourth aspect of the invention is related to a method for preparing a textile or a packaging comprising (a) providing a polymeric material, which is depleted in colorant, preferably a polymeric material, which is depleted in colorant of the second aspect; (b) preparing a textile or a packaging from the polymeric material provided in (a).

The invention discloses a renewable resource sorting and recycling device and method, and relates to the technical field of resource sorting and recycling, the renewable resource sorting and recycling device comprises a screening frame, the outer wall of the bottom of the screening frame is fixedly connected with a supporting frame, the outer wall of the bottom of the supporting frame is fixedly connected with a spring, and the end, away from the supporting frame, of the spring is fixedly connected with a bottom frame; a first screening groove, a second screening groove and a third screening groove which are distributed at equal intervals are formed in the inner wall of the bottom of the screening frame, and the width of the first screening groove, the width of the second screening groove and the width of the third screening groove are gradually increased. Vibration is achieved under linkage of transmission structures such as the rack and the gear disc, materials of different sizes are further assisted to pass through all stages of screening grooves with the widths gradually increased, the materials stably fall through the corresponding discharging frames, and preliminary size grading is completed.

According to one embodiment of the present invention, a method for recycling waste solar panels including glass substrates, solar cells, an adhesive layer disposed between the glass substrate and the solar cells to bond the glass substrate and the solar cells, and a metal frame to fix a laminated structure of the glass substrate, the adhesive layer, and the solar cells includes a crushing process for crushing the waste solar panels to a predetermined size or smaller, a frame removing process for sorting and removing the frames included in the crushed materials crushed by the crushing process, and a dry furnace feeding process for feeding the final crushed materials from which the frames have been removed into a dry furnace of a pyrometallurgical process.

Herein is described a recycled material pellet comprising: shredded glass fiber waste material comprising glass fibers and a thermoplastic binder; wherein the thermoplastic binder constitutes at least about 2 wt.% of the recycled material pellet.

Disclosed herein is a method to recover constituent polymers in multilayer plastic films or mixed plastic wastes. The method comprises selectively dissolving a polymer in a solvent at a temperature, wherein the polymer is soluble, but other polymers in the multilayer plastic film or mixed plastic waste are not. The solubilized polymer is then separated from the multilayer plastic film or mixed plastic waste by mechanical filtration and precipitated by changing the temperature and / or adding a cosolvent. The process is repeated for each of the polymer component, resulting in a number of segregated streams that can then be recycled. Computational tools can be used to select solvent systems and temperatures that selectively dissolve different polymers from among all of the components.

This invention discloses a low-energy-consumption resource recycling method for photovoltaic modules, comprising a step of gradient heating treatment of the photovoltaic panel for sequentially peeling off the glass and backsheet to recover the solar silicon cells. The gradient heating treatment includes the following operations: First, heating a double-glass photovoltaic panel at 300~600 ℃ for 30s~4min, stopping heating, and quickly peeling off one side of the glass; or heating a single-glass photovoltaic panel at 100~200 ℃ for 10s~1min, stopping heating, and quickly peeling off the backsheet; Second, continuing to heat the photovoltaic panel treated in the first step at 400~700 ℃ for 10s~2min, stopping heating, and quickly peeling off the remaining side of the glass to obtain structurally intact solar silicon cells. The recycling method of this invention adopts a stepped short-time heating and peeling treatment, which effectively separates the glass, backsheet, and solar silicon cells of the photovoltaic panel while significantly shortening the processing time, greatly reducing separation energy consumption. Combined with the cleaning treatment of a green organic composite solution, it successfully recovers clean and intact solar silicon cells, which is conducive to promoting the green and circular development of the photovoltaic industry.

A solar module exterior dismantling device is provided. The solar module exterior dismantling device is for dismantling the exterior of a solar module, which is composed of a module body made of glass plates and a laminated film section, a frame surrounding the edge of the module body, and an exterior including a junction box attached to the outer surface of the laminated film section in a protruding manner. The device includes a position adjustment plate that supports one side of the module body from below the solar module and is movable up and down, a plurality of frame separation blades positioned above the position adjustment plate and moving parallel to the surface of the module body between a first position inside the frame and a second position outside the frame, and a plurality of pressure cylinders each connected to the plurality of frame separation blades, and a pressure drive unit that advances the frame separation blades from the first position to the second position by the pressure cylinders, thereby pressurizing the frame outwards and dismantling it, and at least one of the plurality of frame separation blades is composed of a foldable variable blade that folds when retracting to the first position and unfolds when advancing to the second position, making close contact with the entire side of the frame.