The invention disclosed a method for recycling rare earth elements from waste light-emitting electronic components by pyrolysis and alkaline melting-acid leaching. Based on the pyrolysis properties of the organic polymer, through catalytic pyrolysis of the organic polymer material in electronic components and convert the carbon in the residue into water gas, realize high-efficient dismantling of waste electronic component packaging materials. The traditional problems that the compositions of waste light-emitting electronic components are difficult to disassemble are solved, the generated pyrolysis gas and water gas can continuously supply energy for the pyrolysis system and recover the heat in the flue gas to save energy. Meanwhile, based on the chemical dissolution reaction mechanism of phosphors, the combination process of alkali melting, and acid leaching is used to efficiently recover rare earth elements from the waste light-emitting electronic components, and the step leaching of rare earth elements is realized. The rare earth oxalate can be recovered by precipitation, which greatly reduces the difficulty of late separation and purification.

A drag chain carbonizer is provided with a system and methods for anaerobic thermal transformation processing to convert waste into various solid carbonized products and varied further co-products. The drag-chain carbonizer includes an adjustable bed depth mechanism, a heating mechanism, a pressure management mechanism, and a chain tensioning mechanism containing at least one position sensor for communication of an actuator position to at least one programmable logic controller (PLC). Carbonaceous waste is transformed into useful co-products that can be re-introduced into the stream of commerce at various economically advantageous points. Depending upon the input materials and the parameters selected to process the waste, including real time economic and other market parameters, the system adjusts co-products output to reflect changing market conditions.

A drag chain carbonizer is provided with a system and methods for anaerobic thermal transformation processing to convert waste into various solid carbonized products and varied further co-products. The drag-chain carbonizer includes an adjustable bed depth mechanism, a heating mechanism, a pressure management mechanism, and a chain tensioning mechanism containing at least one position sensor for communication of an actuator position to at least one programmable logic controller (PLC). Carbonaceous waste is transformed into useful co-products that can be re-introduced into the stream of commerce at various economically advantageous points. Depending upon the input materials and the parameters selected to process the waste, including real time economic and other market parameters, the system adjusts co-products output to reflect changing market conditions.

A vacuum cracking method and a cracking apparatus for a power battery are disclosed. The vacuum cracking method includes the following steps that: waste power batteries are fed from a feed hopper and then enter a rolling unit for rolling treatment to obtain a crushed material; the crushed material is transported to a cracking unit for preheating, then heated and cracked under an inert atmosphere or vacuum to obtain cracked gas, solid cracked products and non-crackable products; and the solid cracked products and the non-crackable products are transported to a pyrolysis unit for pyrolysis at an aerobic atmosphere to obtain pyrolysis gas and non-pyrolysis products.

A vacuum cracking method and a cracking apparatus for a power battery are disclosed. The vacuum cracking method includes the following steps that: waste power batteries are fed from a feed hopper and then enter a rolling unit for rolling treatment to obtain a crushed material; the crushed material is transported to a cracking unit for preheating, then heated and cracked under an inert atmosphere or vacuum to obtain cracked gas, solid cracked products and non-crackable products; and the solid cracked products and the non-crackable products are transported to a pyrolysis unit for pyrolysis at an aerobic atmosphere to obtain pyrolysis gas and non-pyrolysis products.

A successive thermal pyrolysis apparatus for waste rubber has a pyrolysis furnace unit and a steam heating unit. The pyrolysis furnace unit is a tube chain type pyrolysis furnace and substantially has conveyor tubes and a chain disc conveyor mounted through the conveyor tubes for conveying waste rubber along the conveyor tubes. The steam heating unit encloses a segment of the conveyor tubes and has multiple baffles mounted therein to form a tortuous flowing path for steam passing through to heat the pyrolysis furnace unit. The successive thermal pyrolysis apparatus can prevent the carbonized fragments from sticking to and blocking inner surfaces of the conveyor tubes. The waste rubber fragments are successively thermally decomposed while being conveyed through the conveyor tubes.

Coke oven door sealing unit for sealing a coke oven door against a sealing surface of a coke oven door frame of a coke oven chamber, the coke oven door sealing unit including: a coke oven door for fitting into the coke oven door frame of the coke oven chamber; a fixture device for holding a sealing piece opposite to the coke oven door frame in a peripheral area of the coke oven door; the sealing piece, where the sealing piece is configured to be operated in a first operating state or a second operating state; a seal protection element for isolating the sealing piece from the coke oven chamber; where, in a first operating state, the sealing piece is spaced at a first distance from a sealing surface arranged opposite of the sealing piece; and where, in a second operating state, the sealing piece contacts the sealing surface; such that in the second operating state, the sealing piece and the seal protection element at least partially form a cavity.

Coke oven door sealing unit for sealing a coke oven door against a sealing surface of a coke oven door frame of a coke oven chamber, the coke oven door sealing unit including: a coke oven door for fitting into the coke oven door frame of the coke oven chamber; a fixture device for holding a sealing piece opposite to the coke oven door frame in a peripheral area of the coke oven door; the sealing piece, where the sealing piece is configured to be operated in a first operating state or a second operating state; a seal protection element for isolating the sealing piece from the coke oven chamber; where, in a first operating state, the sealing piece is spaced at a first distance from a sealing surface arranged opposite of the sealing piece; and where, in a second operating state, the sealing piece contacts the sealing surface; such that in the second operating state, the sealing piece and the seal protection element at least partially form a cavity.

A vacuum cracking method and a cracking apparatus for a power battery are disclosed. The vacuum cracking method includes the following steps that: waste power batteries are fed from a feed hopper and then enter a rolling unit for rolling treatment to obtain a crushed material; the crushed material is transported to a cracking unit for preheating, then heated and cracked under an inert atmosphere or vacuum to obtain cracked gas, solid cracked products and non-crackable products; and the solid cracked products and the non-crackable products are transported to a pyrolysis unit for pyrolysis at an aerobic atmosphere to obtain pyrolysis gas and non-pyrolysis products.

A vacuum cracking method and a cracking apparatus for a power battery are disclosed. The vacuum cracking method includes the following steps that: waste power batteries are fed from a feed hopper and then enter a rolling unit for rolling treatment to obtain a crushed material; the crushed material is transported to a cracking unit for preheating, then heated and cracked under an inert atmosphere or vacuum to obtain cracked gas, solid cracked products and non-crackable products; and the solid cracked products and the non-crackable products are transported to a pyrolysis unit for pyrolysis at an aerobic atmosphere to obtain pyrolysis gas and non-pyrolysis products.