KR20180092369A - The method and device to recycleused polyethylene of the crosslinker - Google Patents

The method and device to recycleused polyethylene of the crosslinker Download PDF

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KR20180092369A
KR20180092369A KR1020170017914A KR20170017914A KR20180092369A KR 20180092369 A KR20180092369 A KR 20180092369A KR 1020170017914 A KR1020170017914 A KR 1020170017914A KR 20170017914 A KR20170017914 A KR 20170017914A KR 20180092369 A KR20180092369 A KR 20180092369A
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polyethylene
melting
gas
section
crosslinked polyethylene
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이대성
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이대성
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B2013/005—Degassing undesirable residual components, e.g. gases, unreacted monomers, from material to be moulded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/0496—Pyrolysing the materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The present invention relates to a method and a device for recycling waste crosslinked-polyethylene, in which a crosslinked polyethylene, which is considered to be hardly recycled in the meantime, is mechanically re-pulverized, heated, melted and stirred to cut a crosslinked state. The method comprises: a melting process in which crosslinked polyethylene (crosslinked polyethylene obtained by removing foreign substances and pulverized to a predetermined size) is charged into a melt cylinder hopper, heated and melted at the temperature of 340 to 360°C, and gas generated in the process of cutting the crosslinked state is discharged it to a gas outlet by operating a dust collector; and a cooling and melting process in which a molten material having been subjected to the melting process is charged into a cooling cylinder, cooled to the temperature of 100 to 120°C, and discharged, and thus the device makes it possible to recycle the waste crosslinked polyethylene by injection molding or extrusion molding by de-crosslinking.

Description

폐 가교 폴리에틸렌 재활용하기 위한 방법 및 장치{The method and device to recycleused polyethylene of the crosslinker}BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for recycling waste polyethylene,

본 발명은 폐 가교 폴리에틸렌(이물질 제거하고 일정한 크기로 분쇄된 가교 폴리에틸렌)을 기계적으로 재분쇄 및 가열 용융교반토록 하여 가교상태를 끊어주도록 하고, 그 상태에서 일정한 점도를 갖도록 기계적으로 연화냉가고가정과 냉각용융과정이 이루어짐으로서, 다른 제품으로서의 압출성형에 재활용이 가능토록 하는 장치에 관한 것이다.The present invention relates to a method for producing a thermoplastic elastomer composition, which comprises pulverizing crosslinked polyethylene (a crosslinked polyethylene obtained by removing impurities and having a predetermined size) mechanically re-pulverized, heated and stirred to break the crosslinked state, mechanically softening, The present invention relates to a device for allowing a recycling process to be performed for extrusion molding as another product.

최근 저탄소 녹색성장의 시대에서 자원순환형 사회를 구현하기 위해 폐플라스틱 특히대부분 소각 매립 폐기시키는 폐 가교 폴리에틸렌 재활용을 위한 개발이 주요한 문제로 되어 있다.In order to realize a resource recycling society in the era of low-carbon green growth, the development of waste plastics, especially incineration landfill, and waste crosslinked polyethylene recycling, has become a major problem.

폐 가교 폴리에틸렌은 가교 망상구조로 인해 열을 가해도 잘 용융되지 않아 재 성형이 거의 불가능하며 따라서 폐 가교 폴리에틸렌은 아직까지도 적절한 처리방법이나 재활용방법이 제대로 개발되어 있지 않아 단순 파쇄, 폐기, 소각, 매립될 뿐 효율적인 재활용이 이루어지지 않고 있는 것이 지금의 실정이다.Since the crosslinked polyethylene is not melted well due to the crosslinked network structure, it can not be re-molded. Therefore, the pulverized polyethylene has not yet been properly processed and recycled. It is the present situation that efficient recycling is not achieved.

한국, 일본, 중국 그 외에도 공개특허 공보에서 보다시피 폐 가교 폴리에틸렌 탈 가교화 시키는 방법과 장치가 개시되어 일부 시도되어 있으나 장기간의 높은 고온이 필요한 용융실린더의 온도 340℃-360℃를 가스 또는 전기히터에만 존함으로서 경제적인 측면에서 상용화함에 걸림돌이 되고 있다.As a result, it has been attempted to overcome the above-mentioned problems. However, the temperature of the melting cylinder, which requires a high temperature for a long period of time, is in the range of 340 ° C. to 360 ° C., And it is becoming a stumbling block to commercialization from the economic point of view.

또 한 폐 가교 폴리에틸렌을 호퍼에 투입하여 분쇄 용융하여 가교된 상태를 절단하고, 그 상태에서 냉각시켜 압출 성형하여 펠릿형상으로 가공하고는 있으나 이러한 장치의 문제는 가교상태를 끊어주기 위한 필요한 적정온도 360℃을 가스 또는 전기히터에만 의존함으로서, 일정한 적정온도를 유지되지 못할 경우, 가교상태를 끊어주지 못한다는 것과 반면 높은 온도로 가열될 경우, 물성이 탄화되어 물처럼 흐름으로 점성이 저하되어 가공이 불가능하다는 것이다.In addition, pulverized and cross-linked polyethylene is put into a hopper to melt the cross-linked polyethylene, and the cross-linked polyethylene is cut into a crosslinked state. The cross-linked polyethylene is extruded and cooled to form pellets. The temperature depends on only the gas or electric heater, so that the crosslinking state can not be interrupted if the temperature is not maintained at a constant temperature. On the other hand, when heated to a high temperature, the properties are carbonized, It is.

따라서 이러한 점성이 불이치한 성형제품은 또 별도의 장치나 별도의 가공방법이 요구되어 재활용을 위한 추가적인 가공에 따른 비용증가로 현실적으로 재활용이 불가능하다는 것이다.Therefore, a molded product having such a viscosity is required to have a separate apparatus or a separate processing method, which means that it is impossible to recycle the product due to an increase in cost due to additional processing for recycling.

따라서 본 발명은 이상과 같은 과제를 해결하기 위한 것으로 스크류를 순차적으로 구획하여, 폐 가교 폴리에틸렌(이물질을 제거하고 일정한 크기로 분쇄된 가교폴리에틸렌)을 기계적으로 분쇄, 가열, 용융교반 그리고 온도유지와 연화냉각구간을 구획하여 가교고리를 끊어지도록 함으로써 재생은 물론 일반 폴리에틸렌 수지로 전화시켜 재활용할 수 있도록 하는데 있다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to solve the above problems, and an object of the present invention is to provide a method and apparatus for separating waste crosslinked polyethylene (bridged polyethylene obtained by removing foreign matters and having a predetermined size) by mechanically pulverizing, By dividing the cooling zone to break the crosslinking ring, it is possible to recycle by recycling it by means of ordinary polyethylene resin.

이을 달성하기 위한 본 발명의 다른 특징은 상기한 장치(용융실린더)를 이용하여 폐 가교 폴리에틸렌(이물질 제거하고 일정한 크기로 분쇄된 가교폴리에틸렌)을 호퍼(1001)로 투입하여 제1차 재분쇄이송구간(10)과 제2차 재분쇄가열(340℃-360℃)구간(20) 그리고 제3차로 형성된 용융교반구간(30)에서는 가교상태를 절단하고, 제4차로 연화냉각토록 하는 구간(40)을 특징으로 하는 재생방법이다.Another feature of the present invention to accomplish this is that the waste crosslinked polyethylene (crosslinked polyethylene that has been freed of impurities and pulverized to a certain size) is introduced into the hopper 1001 using the apparatus (melting cylinder) (40) for cutting off the crosslinking state and causing the softening-cooling to occur in the second molten resin agglomeration section (10), the second re-pulverization heating section (340 ° C. to 360 ° C.) section 20 and the third molten agitation section .

본 발명은 대부분 파쇄, 소각, 매립되는 폐 가교 폴리에틸렌을 효과적으로 재활용 할수 있는 경제적인 방법을 개발하고자 노력한 결과, 폐 가교 폴리에틸렌을 기계적으로 분쇄, 가열, 용융교반, 연화냉각토록 하여 가교된 상태를 끊어지도록 하고, 그 상태에서 바로 냉각용융토록 함으로서, 점도를 향상시켜 저온에서도 재성형이 가능한 폴리에틸렌 수지로 재생시키는 장치를 개발하였다.As a result of efforts to develop an economical method which can effectively recycle the pulverized polyethylene, which is mainly pulverized, incinerated and buried, the present invention has been made so that pulverized polyethylene is mechanically pulverized, heated, melted, And by cooling it immediately in the state, it is possible to improve the viscosity and regenerate the polyethylene resin which can be re-formed even at a low temperature.

또한 가교상태를 끊어주게 되는 것이고, 재분쇄 용융교반과정에서 발생되는 온도 99%를 활용토록 하는 용융실린더(스크류)을 개발함으로써 비용이 저렴한 친환경적이고, 경제적인 효과도 갖도록 한 것이다.In addition, the crosslinking state is cut off, and a melting cylinder (screw) for utilizing a temperature of 99% generated in the re-pulverization-melting agitation process is developed, thereby achieving an eco-friendly and economical effect at a low cost.

결론: 본 발명은 그동안 오직 외부의 온도(가스 또는 전기히터)에만 의존해 탈가교화시키는 비겨제적인 용융시스템에서 벗어나, 폐 가교 폴리에틸렌 재분쇄 및 가열 용융교반과정에서 발생하는 온도 99%를 활용, 고온 340℃-360℃으로 전환, 탈 가교화함으로써 저온에서도 재성형이 가능한 재생 폴리에틸렌으로 생산이 가능하도록 하는 탈가교화하는 용융실린더(스크류)를 개발, 상용화하는데 완성했다. CONCLUSION: The present invention utilizes 99% of the temperature generated during the pulverization and heating and melting agitation process of waste crosslinked polyethylene, leaving the non-brittle melting system which only depends on the external temperature (gas or electric heater) ℃ to -360 ℃, and it is made to develop and commercialize a melting cylinder (screw) which can be produced with recycled polyethylene which can be re-formed even at low temperature by degreasing.

도(1)은 본 발명에 따른 폐 가교 폴리에틸렌의 재생장치(용융실린더, 냉각실린더)를 나타내는 단면도이다.
도(2)은 본 발명에 따른 폐 가교 폴리에틸렌의 재생장치(스크류)를 나타내는 단면도이다.
도(3)은 본 발명에 따른 폐 가교 폴리에틸렌 재생과정에서 재분쇄, 탈가교, 용융교반, 연화냉각시켜 배출된 재생폴리에틸렌 와이어를 나타내는 사진이다.
도(4)은 본 발명의 실시예에 따라 생산된 재생폴리에틸렌 와이어를 절단한 칩을 나타내는 사진이다. 1 (a) is a cross-sectional view showing a regenerator (melting cylinder, cooling cylinder) of a closed polyethylene of the present invention according to the present invention.
Fig. 2 is a cross-sectional view showing a regenerator (screw) of the closed-cell polyethylene according to the present invention.
3 is a photograph showing the regenerated polyethylene wire discharged by re-pulverization, de-crosslinking, melt agitation, softening and cooling in the process of regenerating waste polyethylene in accordance with the present invention.
4 is a photograph showing a chip obtained by cutting a recycled polyethylene wire produced according to an embodiment of the present invention.

이하 본 발명의 실시예를 하기에서 첨부된 도면을 참조하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

대표도은 본 발명에 따른 폐 가교 폴리에틸렌의 재생장치를 나타내는 단면도로서 용융실린더(100) 집진기(200) 냉각실린더(300)가 순차적으로 연결 설치되어 구성된다.1 is a cross-sectional view showing a regeneration apparatus for a closed-loop polyethylene according to the present invention, wherein a melting cylinder 100 dust collector 200 cooling cylinder 300 is sequentially connected and installed.

도(1)은 (상)본 발명에 따른 폐 가교 폴리에틸렌의 재생장치(용융실린더)를 나타내는 단면도로서 투입구(1001)와 스크류(1002) 온도감지히터(1003)과 가스배출구(1004) 그리고 연화냉각부분과 배출구(1005)거 순차적으로 연결토록 한 것이고 (1) is a cross-sectional view showing a regenerator (melting cylinder) of a closed polyethylene of the present invention in which the inlet port 1001, the screw 1002, the temperature sensing heater 1003 and the gas outlet port 1004, (1005) and the discharge port

도(1)은 (하)본 발명에 따른 폐 가교 폴리에틸렌의 재생장치(냉각실린더)를 나타내는 단면도로서 투입구(1006)와 스크류(1007) 냉각탱크(1008)과 배출구(1009)가 순차적으로 구비토록 한 것이다. (1) is a sectional view showing a regenerator (cooling cylinder) of a closed-end polyethylene according to the present invention (bottom), in which a charging port 1006, a screw 1007, a cooling tank 1008 and a discharge port 1009 are sequentially It is.

도(2)은 본 발명에 따른 폐 가교 폴리에틸렌의 재생장치(스크류)를 나타내는 단면도로서 분쇄이송구간(10)과 분쇄가열구간(20) 그리고 용융교반구간(30)과 연화냉각구간(40) 순차적으로 연결되고, 실린더 외부에는 온도감지히터와 냉각탱크가 설치 구비토록 한 것이다. FIG. 2 is a cross-sectional view showing a regenerator (screw) of closed-end polyethylene according to the present invention . FIG. 2 is a sectional view showing a crushing / conveying section 10, a crushing section 20, a melting / stirring section 30, And a temperature sensing heater and a cooling tank are installed outside the cylinder.

상기에서 용융실린더(100) 내부에 재분쇄 가열되는 스크류(1002)가 설치되고 호퍼(1001)와 배출구(1005) 및 가스배출구(1004)가 상부에 설치되어 있고, 상기한 가스배출구(1004)에는 집진기가 설치되어 호퍼(1001)로 투입된 폐 가교 폴리에틸렌(이물질 제거하고 일정한 크기로 분쇄한 가교 폴리에틸렌)이 재분쇄 및 가열 용융교반 되어 배출구(003)으로 배출되고, 용융교반과정에서 발생되는 가스는 집진기(002)애 의하여 가스배출구(1004)로 배출된다.A screw 1002 which is re-pulverized and heated in the melting cylinder 100 is installed and a hopper 1001, a discharge port 1005 and a gas discharge port 1004 are installed on the upper part, and the gas discharge port 1004 The pulverized crosslinked polyethylene (the crosslinked polyethylene obtained by removing the foreign material and pulverized to a predetermined size) charged with the dust collector is re-pulverized, heated, melted and stirred and discharged to the discharge port (003) (002) to the gas outlet 1004.

이때 상기 용융실린더(100)은 탈가교에 필요한 적정온도 340℃-360℃을 분쇄 용융교반과정에서 발생되는 온도를 고온으로 얻을 수 있는 특징과 가교상태를 절단하고 용융교반과정에서 발생하는 가스는 가스배출구(1004)로 최종 배출하는 것으로At this time, the melting cylinder 100 cuts off an appropriate temperature 340 ° C. to 360 ° C. necessary for decross-cross-linking to obtain a high temperature generated by the pulverization-melting stirring process and a crosslinked state, and the gas generated in the melting- And finally discharged to the discharge port 1004

상기에서 폐 가교 폴리에틸렌을 가교상태를 절단하고, 재활용이 가능한 폴리에틸렌으로 성형되도록 하기 위해서는 용융실린더 온도를 최고 360℃로 유지해야하는 특징을 가지고 있다.In the above, the temperature of the melting cylinder must be maintained at a maximum of 360 DEG C in order to cut the cross-linked polyethylene into a cross-linked state and to be formed into recyclable polyethylene.

본 발명의 특징은 스크류의 재분쇄가열과정에서 온도 340℃-360℃ 자동으로 가열되면서 용융교반이 이루어짐으로서, 폐 가교 폴리에틸렌의 가교고리를 기계적으로 끊어지도록 하는 것이 특징이다.A feature of the present invention is that the crosslinking ring of pulverized crosslinked polyethylene is mechanically broken by melting and stirring while being automatically heated at a temperature of 340 ° C to 360 ° C in the re-pulverization heating process of the screw.

상기와 같이 용융교반되어 배출된 재생 폴리에틸렌은 냉각실린더(300) 동일한 냉각조건으로 100℃-120℃로 냉각되면서 저온도에서도 재성형이 가능한 점도를 갖춘 완벽한 재생 폴리에틸렌 와이어를 배출하게 된다. 도면(3) The regenerated polyethylene, which is melted and discharged as described above, is cooled to 100 ° C to 120 ° C under the same cooling conditions as that of the cooling cylinder 300, thereby discharging a completely regenerated polyethylene wire having a viscosity capable of re-molding even at a low temperature. Drawing (3)

배출된 와이어는 냉각 및 절단과정을 걸쳐 재생이 가능한 폴리에틸렌으로 재활용할 수 있도록 도면(4)에 나타난 칩 형태로 형성되어 최종 가공 배출된다. 도면(4) The discharged wire is formed in the shape of the chip shown in Fig. 4 so that it can be recycled into polyethylene that can be regenerated through cooling and cutting processes, and finally processed and discharged. Drawing (4)

한편 상기 가스배출구(1004) 과도를 통해서 배출된 가스는 집진기 탱크(200)로 연결되어 집진기에서는 냉각수 분사 순환장치에 의하여 가스가 액화되어 냉각수 탱크에 포집된다.Meanwhile, the gas discharged through the gas outlet 1004 is connected to the dust collector tank 200 where the gas is liquefied by the cooling water spray circulation device and is collected in the cooling water tank.

상기와 같은 장치를 이용한 폐 가교 폴리에틸렌 재생 방법은 우선 이물질 제거한 후 일정한 크기로 분쇄하여 사용한다.In the method for regenerating waste polyethylene in the above-described apparatus, the foreign substance is first removed and then pulverized to a predetermined size.

그리고 냉각실린더(300)는 투입구(1006)와 배출구(1009)가 형성되고, 내부에 스크류(1007)가 설치되어 투입구(1006)로 투입되는 용융물을 배출구(1009)로 100℃-120℃로 냉가고디어 와이어 상태로 배출한다.The cooling cylinder 300 is provided with a charging port 1006 and a discharging port 1009. A screw 1007 is provided in the inside of the cooling cylinder 300 so that the molten material charged into the charging port 1006 is discharged to the discharging port 1009 at 100 ° C to 120 ° C And discharged in the state of the wire wire.

상기에서 냉각 실린더(300) 외주에는 별도의 냉각수 탱크(1008)가 설치되어 냉각실린더(300)을 일정한 온도로 유지하도록 냉각수를 순환 흘려주어 냉기를 공급함으로써 원하는 온도 110℃를 얻을 수 이다.A separate cooling water tank 1008 is provided on the outer circumference of the cooling cylinder 300 to circulate the cooling water to keep the cooling cylinder 300 at a constant temperature to supply cool air to obtain a desired temperature of 110 ° C.

(도1면)
용융실린더 부호의 설명
1001: 투입구
1002: 스크류
1003: 온도감지히터
1004: 가스배출구
1005: 배출구
냉각실린더 부호의 설명
1006: 투입구
1007: 스크류
1008: 냉각탱크
1009: 배출구
(도2면)
호퍼(1001)로 투입한 폐 가교 폴리에틸렌(이물질을 제거하고 일정한 크기로 분쇄된가교 폴리에틸렌)을 제1차 분쇄이송구간(10)과 제2차 분쇄가열구간(20)에서 온도 340℃-360℃로 가열시키고, 제3차 용융교반구간(30)에서 가교상태를 절단하고, 제4차 연회냉각구간(40)에서 가스를 배출시키고, 점도를 향상시키는 특징으로 하는 재생방법 및 장치이다.
스크류 부호의 설명
10: 1단계 분쇄이송구간
20: 2단계 분쇄이송구간
30: 3단계 분쇄이송구간
40: 4단계 분쇄이송구간(Fig. 1)
Explanation of Melting Cylinder Code
1001:
1002: Screw
1003: Temperature sensing heater
1004: gas outlet
1005: Outlet
Description of Cooling Cylinder Codes
1006:
1007: Screw
1008: Cooling tank
1009: Outlet
(Fig. 2)
The pulverized crosslinked polyethylene put into the hopper 1001 (the crosslinked polyethylene which has been ground and pulverized to a predetermined size) is heated in the first pulverization transfer section 10 and the second pulverization heating section 20 at a temperature of 340 ° C to 360 ° C , The cross-linking state is cut off in the third melting and stirring section (30), and the gas is discharged in the fourth zone cooling section (40) to improve the viscosity.
Explanation of screw code
10: 1st stage grinding transfer section
20: Two-stage crushing transfer section
30: Three-stage crushing transfer section
40: Four-stage crushing transfer section

Claims (7)

장치 용융실린더(100) 내부에 재분쇄 및 가열 용융교반토록 하는 스크류(1002)가 설치되고, 투입구(1001)와 배출구(1005) 그리고 가스배출구(1004)가 형성되어, 호퍼(1001)에 투입된 폐 가교 폴리에틸렌(이물질을 제거하고 일정한 크기로 분쇄된 가교 폴리에틸렌)을 기계적으로 재분쇄 및 가열 용유토록 한다.A screw 1002 for re-grinding and heating, melting, and agitating the inside of the apparatus melting cylinder 100 is provided, and an inlet port 1001, an outlet port 1005, and a gas outlet port 1004 are formed, The crosslinked polyethylene (crosslinked polyethylene which has been removed from the foreign material and pulverized to a certain size) is mechanically re-pulverized and heated. 제 1항에 있어서, 스크류(1002)의 구획된 구간은 가교상태를 절단하고, 재활용을 위하여 호퍼(1001)에 투입된 폐 가교 폴리에틸렌(이물질 제거하고 일정한 크기로 분쇄된 가교 폴리에틸렌)을 전방으로 이송하기 위한 분쇄이송구간(101)과 분쇄가열구간(20)이 형성되어 있다.The method according to claim 1, wherein the divided section of the screw (1002) cuts the cross-linked state and transports the waste cross-linked polyethylene (the cross-linked polyethylene crushed to a predetermined size) to the hopper (1001) A crushing conveying section 101 and a crushing heating section 20 are formed. 제 2항에 있어서, 분쇄된 것을 요융이 더 용이토록하기 위한 용유교반구간(30)과 동시에 가교고리를 끊어지도록 하는 온도 (340℃-360℃)유지구간까지를 분쇄가열용융교반구간으로 구획한다.The method according to claim 2, wherein the crushed material is divided into a crushing heating and melting agitation section up to a temperature holding period (340 ° C to 360 ° C) for breaking the crosslinking ring at the same time as the oil-in-oil agitation section (30) . 제 3항에 있어서, 분쇄가열용융교반과정에서 발생하는 가스는 스크류의 피치간격이 넓은 밴트구간에서 집진기(200)를 가동시켜 가스배출구(1004)로 가스를 배기토록 하는것The method according to claim 3, wherein the gas generated in the pulverization-heating-melting agitating process is a gas having a large pitch interval between the screws, the dust collector (200) is operated to exhaust the gas to the gas outlet 제 4항에 있어서, 가스가 배기된 상태의 용융물이 냉각토록 하는 연화냉각구간(40)으로, 상기의 분쇄, 가열, 교반, 냉각, 용융구간(10,20,30,40) 순차적으로 이루어지는 것을 특징으로 한다.The method according to claim 4, wherein the softening cooling section (40) in which the molten material in a state where the gas is exhausted is cooled, and the grinding, heating, stirring, cooling and melting sections (10, 20, 30, 40) . 제 1항에 있어서, 호퍼(1001)에 투입되는 폐 가교 폴리에틸렌(이물질 제거하고 일정한 크기로 분쇄된 가교 폴리에틸렌) 투입구 측에서는 온도 200℃-270℃ (분쇄용융과정)이루어지다가, 후단부터 (가교절단과정)가스를 배출토록 하는 배출구간
(1004)까지는 340℃-360℃로 온도를 가열 유지하면서 용융교반토록 하는 것The method according to claim 1, wherein the waste crosslinked polyethylene introduced into the hopper (1001) is subjected to a temperature of 200 ° C to 270 ° C (pulverization and melting process) on the inlet side of the inlet (crosslinked polyethylene obtained by removing impurities and having a predetermined size) ) Discharge section to discharge gas
(1004) is to melt and stir while maintaining the temperature at 340 DEG C to 360 DEG C 제 6항에 있어서, 용융교반과정을 거친 용융물을 가스가 배기된 상태에서 냉각실런더(300)로 투입되어, 100℃-120℃로 냉각시켜 와이어로 배출되는 과정을 조합하여 구성되는 것을 특징으로 하는 폐 가교 폴리에틸렌의 재생방법The method according to claim 6, wherein the molten material which has undergone the melting and stirring process is injected into the cooling cylinder liner (300) in a state in which the gas is exhausted, Of regenerating spent crosslinked polyethylene
KR1020170017914A 2017-02-09 2017-02-09 The method and device to recycleused polyethylene of the crosslinker KR20180092369A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220146744A (en) * 2021-04-23 2022-11-02 한국과학기술연구원 Recycling apparatus for a cross-linked polyethylene resin using twin screw extruder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220146744A (en) * 2021-04-23 2022-11-02 한국과학기술연구원 Recycling apparatus for a cross-linked polyethylene resin using twin screw extruder

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