Continuously cracking technology of waste rubber or plastics and its equipment
First Claim
1. A method of continuously cracking waste rubber and/or plastics, comprising:
- at least partially extruding raw materials comprising waste rubber and/or plastics, with a catalyst, via an air-separating and/or oxidization-preventing material feeding unit comprising an extrusion unit and a feeding pipe connected to a cracking chamber, the extrusion unit further comprising a screw conveyor unit having a variable pitch and causing extrusion while propelling, wherein the screw conveyor unit includes a screw located in the feeding pipe, and the screw does not extend as deeply into a cracking chamber as does an end of the feeding pipe, such that there is a cavity formed by space between the end of the feeding pipe and an end of the screw;
transporting the at least partially extruded raw materials into the cracking chamber via the material feeding unit, wherein the screw conveyor unit and the cavity operate to reduce an amount of air and/or oxygen reaching an interior of the cracking chamber;
causing said raw materials to be moved from an inlet orifice of the cracking chamber to a discharge hole, during which cracking is performed; and
discharging the products through the discharge hole.
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Accused Products
Abstract
Certain examples relate to methods of continuously cracking waste rubber or plastics and apparatuses related to the same, to produce oil from waste rubber or plastics. Raw materials comprising a catalyst and rubber or plastics may be extruded in order to separate the air or to prevent oxidization. The raw materials are transported into the cracking chamber, and moved from the inlet to the discharge hole. After the cracking process is finished, the products are discharged automatically through the discharge hole. The separation of air and oxygen in the inlet and discharge hole of the cracking chamber can avoid dangers caused by oxygen entering the cracking chamber, and realize industrial production with continuous feedings. The ratio of the oil can be raised from 19% to 45%-48%, and the loss of production equipment reduced. Production costs are reduced, safety measurements improved, and continuous production is realized.
25 Citations
19 Claims
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1. A method of continuously cracking waste rubber and/or plastics, comprising:
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at least partially extruding raw materials comprising waste rubber and/or plastics, with a catalyst, via an air-separating and/or oxidization-preventing material feeding unit comprising an extrusion unit and a feeding pipe connected to a cracking chamber, the extrusion unit further comprising a screw conveyor unit having a variable pitch and causing extrusion while propelling, wherein the screw conveyor unit includes a screw located in the feeding pipe, and the screw does not extend as deeply into a cracking chamber as does an end of the feeding pipe, such that there is a cavity formed by space between the end of the feeding pipe and an end of the screw; transporting the at least partially extruded raw materials into the cracking chamber via the material feeding unit, wherein the screw conveyor unit and the cavity operate to reduce an amount of air and/or oxygen reaching an interior of the cracking chamber; causing said raw materials to be moved from an inlet orifice of the cracking chamber to a discharge hole, during which cracking is performed; and discharging the products through the discharge hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 18)
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11. An apparatus for continuously cracking waste rubber and/or plastics, the apparatus comprising:
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a hermetically sealed cracking chamber with an inlet orifice and a discharge hole; an air-separating and/or oxidization-preventing material feeding unit connected to the inlet orifice of the cracking chamber to transport raw materials comprising rubber and/or plastics into the cracking chamber, the material feeding unit comprising a feeding pipe, wherein an end of the feeding pipe is positioned in the cracking chamber, the material feeding unit also comprising an extrusion unit comprising a screw conveyor unit having a variable pitch to at least partially extrude the raw materials, wherein the screw conveyor unit includes a screw located in the feeding pipe, and the screw does not extend as deeply into the cracking chamber as does the feeding pipe such that there is a cavity formed by space between the end of the feeding pipe and an end of the screw; and a transporting unit in the cracking chamber to transport the at least partially extruded raw materials from the inlet orifice to the discharge hole while cracking occurs, wherein the discharge hole is isolated from the outside air. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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19. An apparatus for continuously cracking waste rubber and/or plastics, the apparatus comprising:
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a hermetically sealed cracking chamber with an inlet orifice and a discharge hole; a material feeding unit connected to the inlet orifice of the cracking chamber to transport raw materials comprising rubber and/or plastics into the cracking chamber, the material feeding unit comprising at least a feeding pipe and a screw; wherein the screw is located at least partially in the feeding pipe, and has a variable pitch; and wherein an end of the feeding pipe is positioned at a first distance into the cracking chamber, and an end of the screw is positioned at a second distance into the cracking chamber, the first distance is greater than the second distance such that there is a cavity formed by space between the end of the feeding pipe and the end of the screw, and the variable pitch and the cavity operate to reduce an amount of air and/or oxygen reaching an interior of the cracking chamber; and a transporting unit in the cracking chamber to transport the at least partially extruded raw materials from the inlet orifice to the discharge hole while cracking occurs, wherein the discharge hole is isolated from the outside air.
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Specification