JP3225830B2 - Foam gas recovery device in foam insulation - Google Patents
Foam gas recovery device in foam insulationInfo
- Publication number
- JP3225830B2 JP3225830B2 JP5130596A JP5130596A JP3225830B2 JP 3225830 B2 JP3225830 B2 JP 3225830B2 JP 5130596 A JP5130596 A JP 5130596A JP 5130596 A JP5130596 A JP 5130596A JP 3225830 B2 JP3225830 B2 JP 3225830B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- crusher
- crushing
- foam
- crushed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000006260 foam Substances 0.000 title claims description 14
- 238000011084 recovery Methods 0.000 title description 4
- 238000009413 insulation Methods 0.000 title 1
- 238000001816 cooling Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 70
- 238000005187 foaming Methods 0.000 description 14
- 239000000843 powder Substances 0.000 description 12
- 238000000926 separation method Methods 0.000 description 12
- 239000011810 insulating material Substances 0.000 description 11
- 239000006261 foam material Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 5
- 239000002360 explosive Substances 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷却装置に用いら
れている発泡断熱材の処理方法及び処理装置に関し、特
に前記発泡断熱材から発泡ガスを脱気して回収する方法
及び処理装置に関するもので、特に冷却装置が少なくと
も２種類以上の発泡ガスで製造されており、これらを前
処理で分別することなく混合状態で処理する場合に好適
なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for treating a foamed heat insulating material used in a cooling apparatus, and more particularly to a method and a processing apparatus for degassing and recovering foamed gas from the foamed heat insulating material. In particular, the cooling device is made of at least two or more types of foaming gas, and is suitable for a case where these are processed in a mixed state without being separated by pretreatment.
【０００２】[0002]
【従来の技術】従来、公知例として冷却装置の発泡断熱
材から発泡ガスとして特定フロンガスを回収する装置
（例えば特開平６−１８４３４８号公報）があるが、発
泡ガスとして可燃性を有する発泡ガスはほとんど使用さ
れてなかったため、冷却装置の発泡断熱材の発泡ガスと
して可燃性を有するガスを使用した物が混在する場合の
対策のための技術は無かった。2. Description of the Related Art Conventionally, as a known example, there is a device for recovering a specific CFC gas as a foaming gas from a foaming heat insulating material of a cooling device (for example, JP-A-6-184348). Since it was hardly used, there was no technique for countermeasures in the case where a mixture of combustible gases was used as the foaming gas for the foamed heat insulating material of the cooling device.
【０００３】[0003]
【発明が解決しようとする課題】本発明は回収システム
全体を対象としており、解決しようとしている課題は冷
却装置を破砕、分離する際の可燃性ガスの混入による燃
焼及び／叉は爆発を防止し、安全に特定フロンガスを回
収するシステムに関するものであり、破砕前に可燃性を
有する発泡ガスを含有した冷却装置か否か調査・分別す
ること無く、可燃性を有する発泡ガスを含有していない
冷却装置と一緒に安全に処理できる方法及び装置を提供
するものである。SUMMARY OF THE INVENTION The present invention is directed to an entire recovery system. The problem to be solved is to prevent combustion and / or explosion due to mixing of combustible gas when crushing and separating a cooling device. This is related to a system for safely recovering specific Freon gas, without investigating and separating whether or not it is a cooling device containing flammable foaming gas before crushing, without using flammable foaming gas. An object of the present invention is to provide a method and an apparatus which can be safely processed together with the apparatus.
【０００４】[0004]
【課題を解決するための手段】破砕すべき冷却装置の投
入を断続にして、破砕時に発泡断熱材から放出する発泡
ガスの種類を検出する手段を設け、放出ガスの種類と冷
却装置との関係を特定することによって、ガスの種類に
応じた処理手段への切り替え手段を設けることによっ
て、処理することで安全性が得られる。Means for solving the problems A means for detecting the type of foaming gas released from the foamed heat insulating material at the time of crushing by intermittently inputting a cooling device to be crushed is provided, and the relationship between the type of released gas and the cooling device is provided. By providing the switching means to the processing means according to the type of gas, safety can be obtained by performing the processing.
【０００５】[0005]
【発明の実施の形態】以下、本発明の一実施を図１によ
り説明する。図１は装置全体の構成を示したもので、廃
冷蔵庫１０１は投入コンベア１により二段破砕機に送ら
れる。二段破砕機は、一次破砕機として粗破砕機２、二
次破砕機として剥離破砕機３から構成される。破砕片コ
ンベア４の途中に軽量物分離フード７が設けられ、破砕
片コンベア４の後段には重量破砕片コンベア５、金属・
樹脂分別装置６が設置される。軽量物分離フード７には
ダクト８、空気バイパス弁５２が取り付き、風力選別機
９は空気の整流板１０、発泡材分別機１１は集塵機１
２、発泡材ホッパ１３、排風機１４から構成され、粉砕
・圧縮機１５は発泡材フィーダ１６、粉砕機１７、粉末
ホッパ１８、粉末圧縮機１９、から構成される。フロン
冷却・凝縮器２０はフィルター２１、コンプレッサ２
２、凝縮器２３、フロン液ポット２４から構成される。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows the configuration of the entire apparatus. The waste refrigerator 101 is sent to a two-stage crusher by a charging conveyor 1. The two-stage crusher includes a coarse crusher 2 as a primary crusher and a peel crusher 3 as a secondary crusher. A light-weight separation hood 7 is provided in the middle of the crushed piece conveyor 4, and a weight crushed piece conveyor 5,
A resin separation device 6 is installed. A duct 8 and an air bypass valve 52 are attached to the light-weight separation hood 7, a wind separator 9 is an air straightening plate 10, and a foam material separator 11 is a dust collector 1.
2. A foam material hopper 13 and an air blower 14 are provided. The pulverizing / compressor 15 is constituted by a foam material feeder 16, a pulverizer 17, a powder hopper 18, and a powder compressor 19. The CFC cooling / condenser 20 includes a filter 21 and a compressor 2
2. It comprises a condenser 23 and a CFC liquid pot 24.
【０００６】破砕装置にはガス検出器５０，粉砕・圧縮
装置１５にはガス検出器５１を設け、ダクト８には空気
バイパス弁５２，粉末ポッパ１８には空気吸入弁５３，
ガス排気弁５４が設けられる。これらの付属品は弁制御
盤５５，弁制御盤５６につながっている。A gas detector 50 is provided in the crushing device, a gas detector 51 is provided in the crushing / compressing device 15, an air bypass valve 52 is provided in the duct 8, an air intake valve 53 is provided in the powder popper 18, and the like.
A gas exhaust valve 54 is provided. These accessories are connected to a valve control panel 55 and a valve control panel 56.
【０００７】冷却装置、例えば冷蔵庫１０１は投入コン
ベア１から破砕装置に投入される。破砕装置は二段破砕
機の場合を示しており、一次破砕機として低速剪断式の
粗破砕機２によって、数十ｍｍから数百ｍｍのサイズに
破砕される。一次破砕機は４００リットルクラスの大型
品を粗破砕するのに好適で、処理対象外のスプレイボン
ベなどの混入による爆発を防止する効果もある。一次破
砕機で粗破砕されるので、二次破砕機の投入口は数百ｍ
ｍ以上有れば良い。[0007] A cooling device, for example, a refrigerator 101 is charged into the crushing device from the charging conveyor 1. The crusher is a two-stage crusher, and is crushed to a size of several tens mm to several hundred mm by a low-speed shearing type coarse crusher 2 as a primary crusher. The primary crusher is suitable for roughly crushing large items of 400 liter class, and has an effect of preventing explosion due to mixing of spray cylinders and the like which are not to be treated. The primary crusher is roughly crushed, so the inlet of the secondary crusher is several hundred meters.
m or more.
【０００８】破砕対象物の大きさが、二次破砕機の投入
口より小さい場合は一次破砕機は省略される事もある。
二次破砕機としては回転衝撃式の剥離破砕機３が好適
で、破砕に伴って数十ｍｍの大きさになり、金属材料、
樹脂材料、発泡断熱材などがそれぞれ構成材料毎に剥離
・分離される。When the size of the object to be crushed is smaller than the inlet of the secondary crusher, the primary crusher may be omitted.
As the secondary crusher, a rotary impact type peeling crusher 3 is preferable, and the size becomes several tens mm according to the crushing, and a metal material,
The resin material, the foamed heat insulating material, and the like are separated and separated for each constituent material.
【０００９】これらの破砕片混合体１０２は、破砕片コ
ンベア４によって搬送され、破砕片コンベア４の途中に
設けられた軽量物分離フード７によって軽量の発泡断熱
材と樹脂の一部がダクト８に吸引され、風力選別機９に
導かれ発泡体破砕片１０５は発泡材分別機１１に搬送さ
れる。破砕片コンベア４上で残った重量物破砕片１０４
と風力選別機９で飛ばなかった重量物破砕片１０６は重
量物破砕片コンベア５によって金属・樹脂分別装置６に
搬送され金属と樹脂その他のダストに分別され再資源化
される。The crushed piece mixture 102 is conveyed by the crushed piece conveyor 4, and a lightweight foam insulating material and a part of the resin are transferred to the duct 8 by the lightweight material separating hood 7 provided in the middle of the crushed piece conveyor 4. It is sucked, guided to the wind separator 9, and the foam fragment 105 is conveyed to the foam separator 11. Crushed pieces 104 remaining on the crushed piece conveyor 4
The heavy material crushed pieces 106 not flew by the wind separator 9 are transported by the heavy material crushed piece conveyor 5 to the metal / resin separation device 6 where they are separated into metal, resin and other dust and recycled.
【００１０】発泡材分別機１１に搬送された発泡体破砕
片１０５は発泡材ホッパ１３を経て、発泡材フィーダ１
６により粉砕機１７へ送られ、微粉砕されて発泡気泡中
のフロンガスが脱気し発泡体粉末１０８は粉末ホッパ１
８から粉末圧縮機１９で圧縮し、粉末圧縮体１０９とし
て取り出される。脱気したフロンガスは、フィルター２
１と経てコンプレッサ２２により加圧され、凝縮器２３
で冷却・液化しフロン液ポット２４を経て、フロン液１
１０として回収される。[0010] The foam crushed pieces 105 conveyed to the foam material sorting machine 11 pass through a foam material hopper 13 and are supplied to the foam material feeder 1.
The foamed powder 108 is sent to a pulverizer 17 by pulverization, finely pulverized, and degassed from the CFC in the foamed bubbles.
8 and compressed by a powder compressor 19 and taken out as a powder compact 109. The degassed Freon gas is passed through the filter 2
1 and is pressurized by the compressor 22 and the condenser 23
To liquefy and cool through the CFC liquid pot 24
Collected as 10.
【００１１】破砕装置（粗破砕機２及び／叉は剥離破砕
機３）には、ガス検収器５０が設けられ空気バイパス弁
５２の開閉をコントロールする弁制御盤５５に接続され
る。図２に冷蔵庫投入、破砕機１台の場合の破砕、フロ
ンガス放出、破砕片搬送の運転時間チャートを示す。横
軸は運転時間を、縦軸は上段が破砕片の単位時間当りの
生成量ＣＲと発泡ガスの単位時間当りの放出量ＧＡと
を、下段は破砕片コンベア４上の軽量物分離フードの点
での破砕片の搬送量ＣＡを示す。時間０で投入した冷蔵
庫は破砕時間Ｔｈ１の間に破砕され、破砕に伴って発泡
断熱材の破断表面の発泡ガスが放出され破砕機内のガス
濃度が徐徐に濃くなりガス検出濃度Ｇｔｈに時間Ｔｇ１
で達し、破砕時間Ｔｈ１以降ガスの放出がなくなり、破
砕機内は換気されているのでガス濃度は０となる。破砕
片コンベア４上の軽量物分離フードの点において、破砕
片は破砕開始後Ｔｕ１−１時間後に達し、Ｔｕ１−２ま
で続く。投入間隔Ｔｐ１時間後に第２回目の冷蔵庫が投
入される。以降同様のピッチで繰り返される。時間Ｔｇ
１あるいは時間Ｔｇ２にて検出されたガスが回収すべき
でないガスの場合、弁制御盤５５により空気バイパス弁
５２が時間Ｔｕ１−１あるいはＴｕ２−１より早い時間
Ｔｓ１で開となりバイパス空気２０３が吸入され、軽量
物フード７の輸送空気２００の流速が低下し軽量物破砕
片１０３はダクト８に搬送される事なく、重量破砕片１
０４と共に重量破砕片コンベア５により金属・樹脂分別
装置に搬送される。The crushing device (coarse crusher 2 and / or peeling crusher 3) is provided with a gas detector 50 and connected to a valve control panel 55 for controlling the opening and closing of the air bypass valve 52. FIG. 2 shows an operation time chart of refrigeration charging, crushing in the case of one crusher, discharge of CFCs, and transportation of crushed pieces. The horizontal axis represents the operating time, the vertical axis represents the generated amount CR of the crushed pieces per unit time and the release amount GA of the foaming gas per unit time, and the lower row represents the point of the light-weight separation hood on the crushed piece conveyor 4. Shows the transport amount CA of the crushed pieces in FIG. The refrigerator charged at time 0 is crushed during the crushing time Th1, the foaming gas on the rupture surface of the foamed heat insulating material is released with the crushing, and the gas concentration in the crusher gradually increases, and the gas detection concentration Gth becomes the time Tg1.
And the gas is no longer released after the crushing time Th1, and the gas concentration becomes 0 because the inside of the crushing machine is ventilated. At the point of the lightweight separation hood on the crushed piece conveyor 4, the crushed pieces reach Tu1-1 hours after the start of crushing and continue to Tu1-2. The second refrigerator is turned on one hour after the feeding interval Tp. Thereafter, this is repeated at the same pitch. Time Tg
If the gas detected at 1 or at time Tg2 is a gas that should not be recovered, the valve control panel 55 opens the air bypass valve 52 at time T1-1 or at time Ts1 earlier than Tu2-1, and the bypass air 203 is sucked. Then, the flow rate of the transport air 200 of the light-weight hood 7 decreases, and the light-weight crushed pieces 103 are not conveyed to the duct 8.
Along with the material 04, the material is conveyed to a metal / resin separation device by a weight crushed piece conveyor 5.
【００１２】図３は破砕機２台の場合の破砕、フロンガ
ス放出、破砕片搬送の運転時間チャートを示す。時間０
で投入した冷蔵庫は破砕時間Ｔｈ１−１の間に破砕さ
れ、破砕に伴って発泡断熱材の破断表面の発泡ガスが放
出され破砕機内のガス濃度が徐徐に濃くなりガス検出濃
度に時間Ｔｇ１−１で達し、破砕時間Ｔｈ１−１以降ガ
スの放出がなくなり、破砕機内は換気されているのでガ
ス濃度は０となる。一次破砕された破砕片は二次破砕機
に搬送され、時間Ｔｈ２−１まで破砕され二次破砕に伴
うガスは時間Ｔｇ２−１で検出濃度に達する。破砕片コ
ンベア４上の軽量物分離フードの点において、破砕片は
破砕開始後Ｔｕ２−１時間後に達し、Ｔｕ２−２まで続
く。投入間隔Ｔｐ１時間後に第２回目の冷蔵庫が投入さ
れる。以降同様のピッチで繰り返される。時間Ｔｇ１−
１および／叉は時間Ｔｇ２−１あるいは時間Ｔｇ１−２
および／叉は時間Ｔｇ２−２にて検出されたガスが回収
すべきでないガスの場合、弁制御盤５５により空気バイ
パス弁５２が時間Ｔｕ２−１あるいはＴｕ２−１より早
い時間Ｔｓ２で開となりバイパス空気２０３が吸入さ
れ、軽量物フード７の輸送空気２００の流速が低下し軽
量物破砕片１０３はダクト８に搬送される事なく、重量
破砕片１０４と共に重量破砕片コンベア５により金属・
樹脂分別装置に搬送される。FIG. 3 shows an operation time chart of crushing, chlorofluorocarbon gas discharge and crushed piece transport in the case of two crushers. Time 0
Is crushed during the crushing time Th1-1, the foaming gas on the rupture surface of the foamed heat insulating material is released with the crushing, the gas concentration in the crusher gradually increases, and the gas detection concentration reaches the time Tg1-1. After the crushing time Th1-1, no gas is released, and the gas concentration becomes 0 since the inside of the crusher is ventilated. The primary crushed fragments are conveyed to a secondary crusher and crushed until time Th2-1, and the gas accompanying the secondary crushing reaches the detection concentration at time Tg2-1. At the point of the light-weight separation hood on the crushed piece conveyor 4, the crushed pieces reach Tu2-1 hours after the start of crushing and continue to Tu2-2. The second refrigerator is turned on one hour after the feeding interval Tp. Thereafter, this is repeated at the same pitch. Time Tg1-
1 and / or time Tg2-1 or time Tg1-2
And / or if the gas detected at the time Tg2-2 is a gas that should not be recovered, the valve control panel 55 opens the air bypass valve 52 at the time Tu2-1 or at a time Ts2 earlier than the Tu2-1, thereby bypassing the bypass air. 203 is sucked in, the flow velocity of the transport air 200 in the light-weight hood 7 is reduced, and the light-weight crushed pieces 103 are not conveyed to the duct 8, but the metal crushed pieces 104 and metal crushed pieces are conveyed by the heavy-weight crushed piece conveyor 5.
It is transported to the resin separation device.
【００１３】二段破砕の場合は、一段目の破砕における
ガス検出時間Ｔｇ１−１により一段破砕の破砕片を二段
破砕に搬送する前に別工程に切り替える事も同様の考え
で出来る。In the case of the two-stage crushing, it is possible to switch to another process before transferring the crushed pieces of the first-stage crushing to the two-stage crushing according to the gas detection time Tg1-1 in the first-stage crushing.
【００１４】投入の方法としては、冷蔵庫１台ずつ断続
的に投入する事が最も簡単であるが、１回当たりの投入
量を冷蔵庫複数台、例えば３〜４台とする事は破砕作業
の効率化からは有効である。但し、３〜４台に１台でも
特定のガスが放出されると３〜４台全てが特定ガス扱い
になって処理されるので処理精度の低下の欠点がある。
この考えを発展させると、投入を必ずしも断続にする必
要はなく連続的に処理して特定のガスを検出するとその
近傍の冷蔵庫複数台を全て特定ガス扱いする事も有効で
ある。この方法は、特定のガスの冷蔵庫が極まれにしか
混入しない場合に有効である。As the charging method, it is easiest to insert the refrigerators one by one intermittently. It is effective from conversion. However, if a specific gas is released even in one out of three or four units, all of the three or four units are treated as a specific gas and processed, so that there is a drawback that the processing accuracy is reduced.
If this idea is developed, it is also effective to treat all the refrigerators in the vicinity when a specific gas is detected by continuously processing and detecting a specific gas. This method is effective when a refrigerator of a specific gas is rarely mixed.
【００１５】発泡ガスの種類の例としては、回収すべき
ガスとしてオゾン層破壊の原因と云われている特定フロ
ン（ＣＦＣ）及び指定フロン（ＨＣＦＣ）があり、回収
対象外のガスとしてはノンフロン発泡剤としてのシクロ
ペンタンガスがある。シクロペンタンガスの爆発限界濃
度は、１．４〜９．８Ｖｏｌ％である。破砕試験の結果
の例として１次破砕としての粗破砕機２の形式が低速２
軸剪断式破砕機の場合、冷蔵庫１台の破砕時間は５〜１
５秒でガス濃度は数百ｐｐｍで爆発限界濃度の１／１０
０のオーダであり、破砕開始から数秒でガス検出でき
た。よって、数十秒の投入間隔で断続投入によって冷蔵
庫と発泡ガスの種類を特定可能である。２次破砕機とし
ての剥離破砕機３の形式が高速回転衝撃式破砕機の場
合、冷蔵庫１台分の１次破砕片の破砕時間は１０〜２０
秒でガス濃度は数千ｐｐｍで爆発限界濃度の１／１０の
オーダであり、破砕開始から数秒でガス検出できた。よ
って、数十秒の投入間隔で断続投入によって冷蔵庫と発
泡ガスの種類を２次破砕機に設けたガス検出器によって
も特定可能である。粗破砕機のない剥離破砕機１台のみ
での破砕装置の場合も有効である。１回当たりの投入量
を冷蔵庫複数台、例えば３〜４台とする場合はこれらを
群ととらえ、連続供給の場合もガス検出との関係で数秒
〜数十秒のタイムラグで群ととらえれば、特定に準じた
対応が可能である。[0015] Examples of the types of foaming gas include specific Freon (CFC) and designated Freon (HCFC) which are said to cause ozone layer destruction as gases to be recovered. There is cyclopentane gas as an agent. The explosive limit concentration of cyclopentane gas is 1.4 to 9.8 Vol%. As an example of the result of the crushing test, the type of the coarse crusher 2 as the primary crushing is low speed 2
In the case of a shaft shear crusher, the crushing time for one refrigerator is 5-1.
In 5 seconds, the gas concentration is several hundred ppm, which is 1/10 of the explosive limit concentration.
It was of the order of 0, and gas could be detected within a few seconds from the start of crushing. Therefore, it is possible to specify the refrigerator and the type of the foaming gas by intermittent charging at a charging interval of several tens of seconds. When the type of the separation crusher 3 as the secondary crusher is a high-speed rotary impact crusher, the crushing time of the primary crushed pieces for one refrigerator is 10 to 20.
In seconds, the gas concentration was several thousand ppm, which was on the order of 1/10 of the explosive limit concentration, and gas could be detected within seconds from the start of crushing. Therefore, the type of the refrigerator and the type of the foaming gas can be specified by the gas detector provided in the secondary crusher by intermittent charging at a charging interval of several tens of seconds. It is also effective in the case of a crusher using only one peeling crusher without a coarse crusher. If the amount of charge per operation is a plurality of refrigerators, for example, 3 to 4 units, these are regarded as a group, and in the case of continuous supply, if a group is captured with a time lag of several seconds to several tens of seconds in relation to gas detection, It is possible to respond according to the specification.
【００１６】発泡材分別機１１に搬送された発泡体破砕
片１０５は発泡材ホッパ１３を経て、発泡材フィーダ１
６により粉砕機１７へ送られ、微粉砕されて発泡気泡中
のフロンガスが脱気する。この時のガス濃度は数％〜数
十％になる。このため発泡体破砕片１０５中にシクロペ
ンタンガスが包含されていると、爆発限界以内の濃度と
なる。そこで粉砕・圧縮装置１５にはガス検出器５１を
設け、粉末ポッパ１８には空気吸入弁５３，ガス排気弁
５４が設け、可燃性ガスの検出，例えば、爆発限界の下
限値以下の１Ｖｏｌ％の濃度検出時に弁制御盤Ｂによっ
て空気吸入弁５３とガス排気弁５４を開し、吸入空気２
０４で系内の爆発性ガスをパージし排気ガス２０５とし
て追い出す事によって系内のガス濃度を爆発限界外にコ
ントロールし、ガス検出器５０と上流側の制御の万一の
不具合をカバーする事が出来る。The foam crushed pieces 105 conveyed to the foam material sorting machine 11 pass through the foam material hopper 13 and are supplied to the foam material feeder 1.
The powder is sent to the crusher 17 by pulverizer 6 and is finely crushed to degas the CFCs in the foamed bubbles. The gas concentration at this time is several percent to several tens percent. For this reason, if cyclopentane gas is contained in the foam crushed pieces 105, the concentration will be within the explosion limit. Therefore, the pulverizing / compressing device 15 is provided with a gas detector 51, and the powder popper 18 is provided with an air intake valve 53 and a gas exhaust valve 54 for detecting flammable gas, for example, at 1 Vol% below the lower limit of the explosion limit. When the concentration is detected, the valve control panel B opens the air intake valve 53 and the gas exhaust valve 54, and the intake air 2
By purging the explosive gas in the system at 04 and purging it out as exhaust gas 205, the gas concentration in the system can be controlled outside the explosion limit, and it is possible to cover the trouble of control of the gas detector 50 and the upstream side. I can do it.
【００１７】[0017]
【発明の効果】本発明によれば、発泡断熱材の発泡ガス
回収装置において、廃冷却装置の発泡断熱材に使用され
ている発泡剤多品種の場合でも発泡ガスの種類に応じて
適切、かつ、安全に処理することが出来る。According to the present invention, in a foamed gas recovery device for foamed heat insulating material, even in the case of a wide variety of foaming agents used for foamed heat insulating material in a waste cooling device, it is appropriate according to the type of foamed gas, and , Can be processed safely.
【図１】本発明による発泡ガス回収装置の一実施例を示
す構成図である。FIG. 1 is a configuration diagram showing one embodiment of a foaming gas recovery device according to the present invention.
【図２】破砕装置が一段のみの場合の、冷蔵庫投入、破
砕機の破砕、フロンガス放出、破砕片搬送の時間関係を
示す運転時間チャートである。FIG. 2 is an operation time chart showing a time relationship of charging a refrigerator, crushing a crusher, discharging CFCs, and transporting crushed pieces when only one crushing device is used.
【図３】破砕装置が二段の場合の、冷蔵庫投入、破砕機
の破砕、フロンガス放出、破砕片搬送の時間関係を示す
運転時間チャートである。FIG. 3 is an operation time chart showing a time relationship of charging a refrigerator, crushing a crusher, discharging CFCs, and transporting crushed pieces when a crusher has two stages.
１…投入コンベア、２…粗破砕機、３…剥離破砕機、４
…破砕片コンベア、５…重量物コンベア、６…金属・樹
脂分別装置、７…軽量物分離フード、８…ダクト、９…
風力選別機、１０…整流板、１１…発泡材分別機、１２
…集塵機、１３…発泡材ホッパ、１４…排風機、１５…
粉砕・圧縮装置、１６…発泡材フィーダ、１７…粉砕
機、１８…粉末ホッパ、１９…粉末圧縮機、２０…フロ
ン冷却・凝縮器、２１…フィルター、２２…コンプレッ
サー、２３…凝縮器、２４…フロン液ポット、５０…ガ
ス検出器、５１…ガス検出器、５２…空気バイパス弁、
５３…空気吸入弁、５４…ガス排気弁、５５…弁制御
盤、５６…弁制御盤、１０１…冷蔵庫、１０２…破砕片
混合体、１０３…軽量物破砕片、１０４…重量物破砕
片、１０…発泡体破砕片、１０６…重量物破砕片、１０
７…重量物破砕片、１０８…発泡体粉末、１０９…粉末
圧縮体、１１０…フロン液、２００…輸送空気、２０１
…整流空気、２０２…排気、２０３…バイパス空気、２
０４…吸入空気、２０５…排気ガス。1 ... Conveyor for input 2 ... Coarse crusher 3 ... Peel crusher 4
... Crushed piece conveyor, 5 ... Heavy material conveyor, 6 ... Metal / resin separation device, 7 ... Light weight separation hood, 8 ... Duct, 9 ...
Wind separator, 10 ... Rectifier plate, 11 ... Foam separator, 12
... dust collector, 13 ... foam hopper, 14 ... exhaust fan, 15 ...
Pulverizing / compressing device, 16: foam material feeder, 17: pulverizer, 18: powder hopper, 19: powder compressor, 20: freon cooling / condenser, 21: filter, 22: compressor, 23: condenser, 24 ... CFC liquid pot, 50: gas detector, 51: gas detector, 52: air bypass valve,
53: air intake valve, 54: gas exhaust valve, 55: valve control panel, 56: valve control panel, 101: refrigerator, 102: crushed piece mixture, 103: lightweight crushed piece, 104: heavy crushed piece, 10 ... Fragment of foam, 106 ... Fragment of heavy material, 10
7: heavy material crushed pieces, 108: foam powder, 109: powder compact, 110: Freon liquid, 200: transport air, 201
... rectified air, 202 ... exhaust, 203 ... bypass air, 2
04: intake air, 205: exhaust gas.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 林 政克 茨城県土浦市神立町502番地 株式会社 日立製作所 機械研究所内 (56)参考文献 特開 平７−275831（ＪＰ，Ａ) 特開 平８−47682（ＪＰ，Ａ) 特開 平６−329827（ＪＰ，Ａ) 特開 平９−59419（ＪＰ，Ａ) 特開 平９−164220（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B09B 5/00 B29B 17/00 - 17/02 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masakatsu Hayashi 502, Kandachi-cho, Tsuchiura-shi, Ibaraki Machinery Research Laboratory, Hitachi, Ltd. (56) References JP-A-7-275831 (JP, A) JP-A-8 -47682 (JP, A) JP-A-6-329827 (JP, A) JP-A-9-59419 (JP, A) JP-A-9-164220 (JP, A) (58) Fields investigated (Int. . 7, DB name) B09B 5/00 B29B 17/00 - 17/02
Claims (1)
の破砕片から発泡体破砕片を選別する選別機と、選別さ
れた発泡体を粉砕する粉砕機と、粉砕時に放出するガス
の種類を検出する検出器と、 検出器からの検出結果に応じて、回収すべきガスかある
いは回収すべきでないガスかを判別する判別手段と、回
収すべきでないガスの場合、系統外へガス排気する排気
手段とからなる ことを特徴とする発泡ガス回収装置。 1. A crusher for crushing a cooling device and a crusher
Sorting machine for separating foam crushed pieces from crushed pieces
Crusher for crushing foam and gas released during crushing
A detector for detecting the type, according to the detection result from the detector, is the gas should be recovered
Means for determining whether the gas should not be recovered
In the case of gas that should not be collected, exhaust gas is exhausted out of the system
Means for recovering foamed gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5130596A JP3225830B2 (en) | 1996-03-08 | 1996-03-08 | Foam gas recovery device in foam insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5130596A JP3225830B2 (en) | 1996-03-08 | 1996-03-08 | Foam gas recovery device in foam insulation |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000081784A Division JP3341752B2 (en) | 1996-03-08 | 2000-03-17 | Method for recovering foam gas from foam insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09239351A JPH09239351A (en) | 1997-09-16 |
| JP3225830B2 true JP3225830B2 (en) | 2001-11-05 |
Family
ID=12883217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5130596A Expired - Lifetime JP3225830B2 (en) | 1996-03-08 | 1996-03-08 | Foam gas recovery device in foam insulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3225830B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102559007B1 (en) * | 2021-05-31 | 2023-07-21 | 김경진 | Dental Handpiece |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3745183B2 (en) * | 2000-02-10 | 2006-02-15 | 株式会社日立製作所 | Foam gas recovery method and recovery device for foam insulation |
| JP7171173B2 (en) * | 2017-08-25 | 2022-11-15 | Ｊｘ金属株式会社 | Method for recovering valuable metals from printed circuit board waste |
-
1996
- 1996-03-08 JP JP5130596A patent/JP3225830B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102559007B1 (en) * | 2021-05-31 | 2023-07-21 | 김경진 | Dental Handpiece |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09239351A (en) | 1997-09-16 |
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