JP2000273465A - Device for oiling waste plastic - Google Patents
Device for oiling waste plasticInfo
- Publication number
- JP2000273465A JP2000273465A JP8536899A JP8536899A JP2000273465A JP 2000273465 A JP2000273465 A JP 2000273465A JP 8536899 A JP8536899 A JP 8536899A JP 8536899 A JP8536899 A JP 8536899A JP 2000273465 A JP2000273465 A JP 2000273465A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- waste plastic
- pyrolysis
- gas
- cooler
- 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.)
- Pending
Links
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
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、廃プラスチック油
化装置に関する。The present invention relates to a waste plastic oiling device.
【０００２】[0002]
【従来の技術】廃プラスチックを熱分解して発生する熱
分解ガスを冷却して油を回収する廃プラスチック油化装
置は、通常熱分解槽の内部温度が一定になるように運転
する。しかし、プラスチックは種類により熱分解特性が
異なるため、熱分解温度が一定の下では、廃プラスチッ
クの組成が変わると熱分解ガスの発生量も変動する。し
たがって、廃プラスチックを熱分解槽に定量供給する油
化装置の場合、組成が変動すると熱分解に滞留する溶融
物の量が変動する。特に溶融物の量が増加し続けると熱
分解槽内のレベルが上昇し危険なため、溶融物の量を一
定に保つような運転制御が必要である。そのため特開昭
49−21481 号公報には合成高分子廃棄物の乾留炉に温度
検出装置および液レベル検出装置を設置し、一定の液レ
ベルが維持されるように乾留炉の温度制御をする方法が
記載されている。2. Description of the Related Art A waste plastic oiling apparatus for recovering oil by cooling a pyrolysis gas generated by pyrolysis of waste plastic is usually operated so that the internal temperature of a pyrolysis tank is kept constant. However, plastics have different thermal decomposition characteristics depending on the type. Therefore, when the thermal decomposition temperature is constant, when the composition of the waste plastic changes, the amount of generated pyrolysis gas also changes. Therefore, in the case of an oiler that supplies waste plastic to the pyrolysis tank in a fixed amount, if the composition changes, the amount of the melt that stays in the pyrolysis changes. In particular, if the amount of the melt continues to increase, the level in the pyrolysis tank rises and is dangerous, so that operation control is required to keep the amount of the melt constant. For this reason,
Japanese Patent Publication No. 49-21481 describes a method for installing a temperature detector and a liquid level detector in a dry distillation furnace for synthetic polymer waste and controlling the temperature of the dry distillation furnace so that a constant liquid level is maintained. I have.
【０００３】[0003]
【発明が解決しようとする課題】しかし、軽質な油を得
るために、熱分解槽で発生した熱分解ガスから重質な高
沸点成分を液化して分離し、熱分解槽へ還流することに
より軽質な低沸点成分のみを油として回収する還流手段
を有する油化装置では、液レベルの上昇を抑制するため
に、従来技術のように熱分解槽の温度を上げても、その
一部は還流槽で液化されて熱分解槽へ還流してくるため
液レベルが低下するまでに時間を要し、その間も液レベ
ルが上昇し続けるという問題があった。特にポリエチレ
ンやポリプロピレンを多く含む廃プラスチックの場合に
は、熱分解温度を上げることにより熱分解ガスに占める
高沸点成分の割合が増えるために還流槽から熱分解槽へ
還流してくる液が増加し、熱分解槽の液レベルが下がり
にくいという問題があった。さらに、熱分解槽に滞留す
る廃プラスチックの溶融物は、黒色で粘性が高く、また
融点が高いことから固化しやすいため、通常のレベルゲ
ージは適用できず、熱分解槽の外部から非接触で測定す
るタイプのセンサを用いる必要があり設備コストがかか
るという問題があった。However, in order to obtain light oils, heavy high-boiling components are liquefied and separated from the pyrolysis gas generated in the pyrolysis tank, and refluxed to the pyrolysis tank. In an oiling apparatus having a reflux means for recovering only light low-boiling components as oil, in order to suppress a rise in the liquid level, even if the temperature of the pyrolysis tank is increased as in the prior art, a part of the oil is refluxed. Since it is liquefied in the tank and refluxed to the pyrolysis tank, it takes time for the liquid level to decrease, and during that time, there is a problem that the liquid level continues to increase. In particular, in the case of waste plastics containing a large amount of polyethylene and polypropylene, increasing the pyrolysis temperature increases the proportion of high-boiling components in the pyrolysis gas. However, there is a problem that the liquid level of the thermal decomposition tank is hard to decrease. Furthermore, the waste plastic that remains in the pyrolysis tank is black and highly viscous, and because of its high melting point, it is easy to solidify. There is a problem that it is necessary to use a sensor of a type for measurement, which increases the equipment cost.
【０００４】本発明の目的は、熱分解槽内の液レベルを
一定に保つために熱分解槽の加熱量と熱分解槽への廃プ
ラスチックの供給量を制御する制御装置を備えた廃プラ
スチック油化装置を提供するものである。An object of the present invention is to provide a waste plastic oil provided with a control device for controlling the amount of heating of the pyrolysis tank and the amount of waste plastic supplied to the pyrolysis tank in order to keep the liquid level in the pyrolysis tank constant. The present invention provides a chemical conversion device.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
め、本発明による廃プラスチック油化装置は、廃プラス
チックを熱分解する熱分解槽と、廃プラスチックを熱分
解槽に定量供給する手段を有する廃プラスチック供給装
置と、廃プラスチックの熱分解ガスを冷却する第一冷却
器と、第一冷却器において生成した液状の重質成分とガ
ス状の軽質成分とを分離し、液状の重質成分を熱分解槽
へ循環する還流槽と、還流槽において得られたガス状の
軽質成分を冷却する第二冷却器と、第二冷却器において
生成する油と非凝縮ガスとを分離する気液分離槽とを有
する廃プラスチック油化装置において、前記気液分離槽
内の油の生成量の時間変動量の計測値に基づいて、前記
熱分解槽の内部温度と廃プラスチックの供給速度の少な
くとも一方を調節する制御装置を備えたことを特徴とす
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a waste plastic oiling apparatus according to the present invention comprises a pyrolysis tank for thermally decomposing waste plastic, and a means for quantitatively supplying waste plastic to the pyrolysis tank. A waste plastic supply device, a first cooler for cooling the pyrolysis gas of the waste plastic, and a liquid heavy component generated by the first cooler to separate the gaseous light component from the liquid heavy component. Tank that circulates gas to the thermal decomposition tank, a second cooler that cools gaseous light components obtained in the reflux tank, and gas-liquid separation that separates oil and non-condensed gas generated in the second cooler In a waste plastic oiling apparatus having a tank, at least one of the internal temperature of the pyrolysis tank and the supply rate of waste plastic based on a measured value of a time variation of an amount of oil generated in the gas-liquid separation tank. Adjustment Characterized by comprising a that controller.
【０００６】前述したように還流槽を備えた油化装置で
は、液レベルの上昇を抑制するために熱分解温度を上げ
ても、液レベルが低下するまでに時間を要し、その間も
液レベルが上昇し続けるという問題があったが、本発明
では、熱分解温度を上げても液レベルが下がる傾向が見
られない場合には、廃プラスチックの定量供給を解除し
供給量を漸次減らしていくことにより、短時間で液レベ
ルを所定のレベルに回復することができるため安全性が
向上する。また、熱分解槽内の液レベルを直接測定する
のではなく、安価な設備で容易に測定できる油の量と、
廃プラスチックの供給量から熱分解槽の液レベルを推定
することにより設備コストの低減が図れる。[0006] As described above, in the oiling apparatus provided with a reflux tank, even if the pyrolysis temperature is raised to suppress the rise in the liquid level, it takes time for the liquid level to drop, and during that time, the liquid level is reduced. However, in the present invention, when there is no tendency to decrease the liquid level even when the pyrolysis temperature is increased, the quantitative supply of the waste plastic is released and the supply amount is gradually reduced. Thereby, the liquid level can be restored to the predetermined level in a short time, so that the safety is improved. Also, instead of directly measuring the liquid level in the pyrolysis tank, the amount of oil that can be easily measured with inexpensive equipment,
By estimating the liquid level of the pyrolysis tank from the supply amount of waste plastic, the equipment cost can be reduced.
【０００７】また、本発明による廃プラスチックの油化
装置は、前記廃プラスチック油化装置において、前記気
液分離槽内の油と非凝縮ガスの生成量の時間変動量の計
測値の合計値に基づいて、前記熱分解槽の内部温度と廃
プラスチックの供給速度の少なくとも一方を調節する制
御装置を備えたことを特徴とする。油の生成量と非凝縮
ガスの生成量の合計値を用いることにより、液レベルの
推定精度が向上する。また別の本発明の特徴は、前記廃
プラスチック油化装置において、前記還流槽において液
状の重質成分から分離されたガス状の軽質成分の生成量
の時間変動量の計測値に基づいて、前記熱分解槽の内部
温度と廃プラスチックの供給速度の少なくとも一方を調
節する制御装置を備えたことを特徴とする。還流槽にお
いて液状の重質成分から分離されたガス状の軽質成分の
生成量を制御に用いることにより、油と非凝縮ガスの合
計値を用いるよりも運転制御のタイムラグを短縮でき精
度の向上が図れる。The waste plastic oiling apparatus according to the present invention is characterized in that, in the waste plastic oiling apparatus, the total value of the measured values of the time variation of the amount of oil and non-condensed gas generated in the gas-liquid separation tank is obtained. And a controller that adjusts at least one of the internal temperature of the pyrolysis tank and the supply rate of the waste plastic based on the temperature. By using the sum of the amount of generated oil and the amount of generated non-condensable gas, the accuracy of estimating the liquid level is improved. Still another feature of the present invention is that, in the waste plastic oiling device, based on a measured value of a time variation of a generation amount of a gaseous light component separated from a liquid heavy component in the reflux tank, A control device for adjusting at least one of the internal temperature of the pyrolysis tank and the supply rate of the waste plastic is provided. By using the amount of gaseous light components separated from the liquid heavy components in the reflux tank for control, the time lag of operation control can be shortened compared to using the total value of oil and non-condensable gas, and the accuracy is improved. I can do it.
【０００８】[0008]
【発明の実施の形態】以下、この発明の詳細を図を参照
しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings.
【０００９】図１は、本発明による第一の実施例を示
す。FIG. 1 shows a first embodiment according to the present invention.
【００１０】廃プラスチック１０は定量供給装置を備え
た供給装置３００から熱分解槽100に空気を伴わないよ
うにして投入され、熱分解槽１００は加熱炉２００によ
り加熱される。熱分解ガス２０は第一冷却器４００で任
意の温度まで冷却され、還流槽５００に入る。ここで、
第一冷却器４００において凝縮液化した高沸点成分２１
は凝縮液化しない低沸点ガス２２と分離され、熱分解槽
１００に戻されて再度熱分解される。一方、凝縮液化し
ない低沸点ガス２２は第二冷却器６００でさらに冷却さ
れた後気液分離槽７００において油３０と非凝縮ガス４
０とに分離される。油３０は気液分離槽から弁Ｖ１を介
して油貯留槽８００へ抜き出され、さらに制御弁ＣＶ１
を介して加熱炉２００へ熱源として供給される。[0010] The waste plastic 10 is supplied from a supply device 300 provided with a fixed-rate supply device to the pyrolysis tank 100 without air, and the pyrolysis tank 100 is heated by the heating furnace 200. The pyrolysis gas 20 is cooled to an arbitrary temperature in the first cooler 400 and enters the reflux tank 500. here,
High boiling point component 21 condensed and liquefied in first cooler 400
Is separated from the low-boiling gas 22 that does not condense and liquefy, is returned to the pyrolysis tank 100, and is pyrolyzed again. On the other hand, the low-boiling gas 22 which is not condensed and liquefied is further cooled by the second cooler 600 and then the oil 30 and the non-condensed gas 4
0. The oil 30 is extracted from the gas-liquid separation tank to the oil storage tank 800 via the valve V1, and is further controlled by the control valve CV1.
Is supplied as a heat source to the heating furnace 200 via the heating furnace.
【００１１】気液分離槽７００は油の生成量を測定する
ための計測手段を備えており、その計測値は制御装置９
００に入力される。また、制御装置９００には、廃プラ
スチックの供給速度が入力されており、気液分離槽７０
０における油生成量の変化量、すなわち油の生成速度と
廃プラスチックの供給速度から熱分解槽内の液レベルが
推定される。その液レベルの推定結果に基づいて、制御
弁ＣＶ１の開度と供給装置３００に備えられた定量供給
手段の設定値が制御される。[0011] The gas-liquid separation tank 700 is provided with a measuring means for measuring the amount of generated oil, and the measured value is stored in the control device 9.
00 is input. Further, the supply rate of the waste plastic is input to the control device 900, and the gas-liquid separation tank 70
The liquid level in the pyrolysis tank is estimated from the amount of change in the amount of oil production at zero, ie, the rate of oil production and the rate of waste plastic supply. Based on the estimation result of the liquid level, the opening of the control valve CV <b> 1 and the set value of the quantitative supply means provided in the supply device 300 are controlled.
【００１２】次に、制御装置９００による運転制御の方
法を図２を用いて説明する。図２のａは気液分離槽７０
０における油３０の生成速度、ｂは加熱炉２００への燃
料供給速度、ｃは熱分解槽内部温度、ｄは熱分解槽への
廃プラスチックの供給速度である。運転は先ず設計条件
に従い開始する。油３０は熱分解槽１００の加熱開始か
ら少し遅れて気液分離槽に溜まり始めレベルが上昇し始
める。油３０の生成速度がいったん安定した時点(ｔ１)
で目標値に満たない場合、制御弁ＣＶ１の開度を大にし
加熱炉２００へ供給する燃料油量を増やす。その結果、
熱分解槽１００の内部温度が上昇し、それに伴い油生成
速度も上昇する。再び熱分解槽１００の内部温度が安定
した時点（ｔ２）で油３０の生成速度が目標値に達して
いない場合には、さらに制御弁ＣＶ１を開き熱分解槽１
００の内部温度レベルを上げる。ただし、熱分解槽の内
部温度を高くしすぎると、油の割合が減り非凝縮ガスが
増えるため、内部温度には上限値が設けられている。上
限を超えない範囲で内部温度を上げても油３０の生成速
度が目標のレベルに達しない場合には、次に供給装置３
００からの廃プラスチックの定量供給を一旦解除し、熱
分解槽１００へ供給する廃プラスチック量を減らす(ｔ
３)。その結果、供給された廃プラスチックの昇温と溶
融に消費されていた熱が溶融物のガス化に利用されるた
めに液レベルが低下し、分解ガスの発生量が増加する。
また、その結果として油の生成速度が上昇する。この操
作を油３０の生成速度が目標値に達する(ｔ４)まで繰り
返す。油３０の生成速度が目標値に達したら、すなわち
熱分解槽の液レベルが所定のレベル以下になったら、ｔ
４における供給速度で定量供給を再開する。Next, a method of operation control by the control device 900 will be described with reference to FIG. FIG. 2A shows a gas-liquid separation tank 70.
At 0, the generation rate of the oil 30, b is the fuel supply rate to the heating furnace 200, c is the internal temperature of the thermal decomposition tank, and d is the supply rate of the waste plastic to the thermal decomposition tank. Operation first starts according to design conditions. The oil 30 begins to accumulate in the gas-liquid separation tank slightly after the start of heating of the pyrolysis tank 100, and starts to increase in level. The point at which the production rate of oil 30 is once stabilized (t1)
Is smaller than the target value, the opening of the control valve CV1 is increased to increase the amount of fuel oil supplied to the heating furnace 200. as a result,
The internal temperature of the pyrolysis tank 100 increases, and the oil generation rate increases accordingly. When the generation rate of the oil 30 has not reached the target value at the time (t2) when the internal temperature of the pyrolysis tank 100 is stabilized again, the control valve CV1 is further opened to open the pyrolysis tank 1
Increase internal temperature level of 00. However, if the internal temperature of the pyrolysis tank is set too high, the proportion of oil decreases and the amount of non-condensable gas increases, so an upper limit is set for the internal temperature. If the generation rate of the oil 30 does not reach the target level even if the internal temperature is raised within the range not exceeding the upper limit, the supply device 3
00, the quantitative supply of waste plastic is temporarily released, and the amount of waste plastic supplied to the pyrolysis tank 100 is reduced (t
3). As a result, since the heat consumed for raising and melting the supplied waste plastic is used for gasification of the melt, the liquid level decreases, and the amount of generated decomposition gas increases.
Also, as a result, the oil generation rate increases. This operation is repeated until the generation speed of the oil 30 reaches the target value (t4). When the generation rate of the oil 30 reaches the target value, that is, when the liquid level in the pyrolysis tank falls below a predetermined level, t
The metering feed is restarted at the feed speed in 4.
【００１３】油の生成量の計測には、既存の重量センサ
やレベル計を使用できるため、本実施例によれば、容易
かつ低コストで安全性の向上が図れる。Since the existing weight sensor and level gauge can be used for measuring the amount of generated oil, according to this embodiment, safety can be improved easily and at low cost.
【００１４】図３に本発明の第二の実施例を示す。機器
の構成は実施例１と同じであり、非凝縮ガス４０の流路
に流量計１０００を設けた点に特徴がある。流量計１０
００により測定された非凝縮ガス４０の流量は、制御装
置９００に入力される。制御装置９００には廃プラスチ
ックの供給速度が入力されており、気液分離槽７００に
おける油３０の生成速度と非凝縮ガス４０の合計値とか
ら熱分解槽内の液レベルが推定される。その液レベルの
推定結果に基づいて、実施例１と同様に制御弁ＣＶ１の
開度と供給装置３００に備えられた定量供給手段の設定
値が制御される。FIG. 3 shows a second embodiment of the present invention. The configuration of the device is the same as that of the first embodiment, and is characterized in that a flow meter 1000 is provided in the flow path of the non-condensable gas 40. Flow meter 10
The flow rate of the non-condensable gas 40 measured at 00 is input to the control device 900. The supply rate of the waste plastic is input to the control device 900, and the liquid level in the pyrolysis tank is estimated from the generation rate of the oil 30 in the gas-liquid separation tank 700 and the total value of the non-condensable gas 40. Based on the estimation result of the liquid level, the opening of the control valve CV1 and the set value of the quantitative supply means provided in the supply device 300 are controlled in the same manner as in the first embodiment.
【００１５】第一の実施例では油３０の生成速度と廃プ
ラスチックの供給速度から熱分解槽１００内の液レベル
を推定したが、本実施例のように非凝縮ガス４０の流量
との合計値を用いることにより液レベルの推定値の精度
を向上できる。In the first embodiment, the liquid level in the pyrolysis tank 100 is estimated from the generation speed of the oil 30 and the supply speed of the waste plastic. However, as in this embodiment, the total value of the flow rate of the non-condensable gas 40 is calculated. Can improve the accuracy of the estimated value of the liquid level.
【００１６】図４は本発明の第３の実施例を示したもの
である。機器の構成は実施例１と同じであり、低沸点ガ
ス２２の流路に流量計２０００を設けた点に特徴があ
る。流量計２０００により測定された低沸点ガス２２の
流量は、制御装置９００に入力される。制御装置９００
には廃プラスチックの供給速度が入力されており、低沸
点ガス２２の流量と熱分解槽１００の液レベルが推定さ
れる。その液レベルの推定結果に基づいて、実施例１と
同様に制御弁ＣＶ１の開度と供給装置３００に備えられ
た定量供給手段の設定値が制御され、液レベルを所定の
レベルに維持する。FIG. 4 shows a third embodiment of the present invention. The configuration of the device is the same as that of the first embodiment, and is characterized in that a flow meter 2000 is provided in the flow path of the low-boiling gas 22. The flow rate of the low-boiling gas 22 measured by the flow meter 2000 is input to the control device 900. Control device 900
Is supplied with the supply rate of the waste plastic, and the flow rate of the low-boiling gas 22 and the liquid level of the pyrolysis tank 100 are estimated. Based on the estimation result of the liquid level, the opening degree of the control valve CV1 and the set value of the quantitative supply means provided in the supply device 300 are controlled as in the first embodiment, and the liquid level is maintained at a predetermined level.
【００１７】油３０と非凝縮ガス４０の計測は容易な反
面、油生成量の検出装置の検出限界を生成量の変化量が
上回るだけの測定間隔をとる必要があり、運転制御に遅
れを生じる。一方、低沸点ガス２２の流量は計測が多少
困難であるが、連続的に流量を把握できるため時間遅れ
が少なく、応答性のよい制御が可能となる。Although the measurement of the oil 30 and the non-condensed gas 40 is easy, it is necessary to set a measurement interval in which the amount of change in the amount of generation exceeds the detection limit of the device for detecting the amount of oil generation, which causes a delay in operation control. . On the other hand, it is somewhat difficult to measure the flow rate of the low-boiling gas 22, but since the flow rate can be continuously grasped, a time delay is small, and control with good responsiveness can be performed.
【００１８】[0018]
【発明の効果】本発明によれば、熱分解槽に供給される
廃プラスチックの種類が変化しても、熱分解槽内の液レ
ベルを一定に保つことができる。According to the present invention, the liquid level in the pyrolysis tank can be kept constant even if the type of waste plastic supplied to the pyrolysis tank changes.
【図１】本発明の廃プラスチック油化装置の第一の実施
例を示す図である。FIG. 1 is a view showing a first embodiment of a waste plastic oil converting apparatus according to the present invention.
【図２】本発明の第一の実施例による廃プラスチック油
化装置の運転データを示す図である。FIG. 2 is a diagram showing operation data of the waste plastic oil converting apparatus according to the first embodiment of the present invention.
【図３】本発明の廃プラスチック油化装置の第二の実施
例を示す図である。FIG. 3 is a view showing a second embodiment of the waste plastic oil converting apparatus of the present invention.
【図４】本発明の廃プラスチック油化装置の第三の実施
例を示す図である。FIG. 4 is a view showing a third embodiment of the waste plastic oil converting apparatus according to the present invention.
１０…廃プラスチック、２０…熱分解ガス、２１…高沸
点成分、２２…低沸点ガス、３０…油、４０…非凝縮ガ
ス、１００…熱分解槽、２００…加熱炉、300…供給装
置、４００…第一冷却器、５００…還流槽、６００…第
二冷却器、700…気液分離槽、８００…油貯留槽、９０
０…制御装置、１０００，２０００，３０００…流量
計、Ｖ１…弁、ＣＶ１…制御弁。DESCRIPTION OF SYMBOLS 10 ... Waste plastic, 20 ... Pyrolysis gas, 21 ... High boiling point component, 22 ... Low boiling point gas, 30 ... Oil, 40 ... Non-condensable gas, 100 ... Pyrolysis tank, 200 ... Heating furnace, 300 ... Supply device, 400 ... first cooler, 500 ... reflux tank, 600 ... second cooler, 700 ... gas-liquid separation tank, 800 ... oil storage tank, 90
0: control device, 1000, 2000, 3000: flow meter, V1: valve, CV1: control valve.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小山 俊太郎 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 (72)発明者 斉藤 知行 東京都千代田区神田駿河台四丁目６番地 株式会社日立製作所機電事業部内 Ｆターム(参考） 4F301 CA07 CA26 CA41 CA51 CA52 CA64 CA71 CA72 4H029 CA01 CA14 CA15 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shuntaro Koyama 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Inside the Hitachi Research Laboratory, Hitachi, Ltd. Address F-term in Hitachi, Ltd. Machinery & Electric Power Division (reference)
Claims (3)
廃プラスチックを熱分解槽に定量供給する手段を有する
廃プラスチック供給装置と、廃プラスチックの熱分解ガ
スを冷却する第一冷却器と、第一冷却器において生成し
た液状の重質成分とガス状の軽質成分とを分離し、液状
の重質成分を熱分解槽へ循環する還流槽と、還流槽にお
いて得られたガス状の軽質成分を冷却する第二冷却器
と、第二冷却器において生成する油と非凝縮ガスとを分
離する気液分離槽とを有する廃プラスチック油化装置に
おいて、前記気液分離槽内の油の生成量の時間変動量の
計測値に基づいて、前記熱分解槽の内部温度と廃プラス
チックの供給速度の少なくとも一方を調節する制御装置
を備えたことを特徴とする廃プラスチック油化装置。1. A pyrolysis tank for pyrolyzing waste plastics,
A waste plastic supply device having a means for supplying a fixed amount of waste plastic to the pyrolysis tank, a first cooler for cooling the pyrolysis gas of the waste plastic, and a liquid heavy component generated in the first cooler and a gaseous component. A reflux tank that separates light components and circulates the liquid heavy components to the pyrolysis tank, a second cooler that cools the gaseous light components obtained in the reflux tank, and a second cooler that is produced In a waste plastic oil liquefaction apparatus having a gas-liquid separation tank for separating oil and non-condensable gas, based on a measured value of a time variation of an amount of generated oil in the gas-liquid separation tank, A waste plastic oiling device comprising a control device for adjusting at least one of an internal temperature and a supply speed of waste plastic.
廃プラスチックを熱分解槽に定量供給する手段を有する
廃プラスチック供給装置と、廃プラスチックの熱分解ガ
スを冷却する第一冷却器と、第一冷却器において生成し
た液状の重質成分とガス状の軽質成分とを分離し、液状
の重質成分を熱分解槽へ循環する還流槽と、還流槽にお
いて得られたガス状の軽質成分を冷却する第二冷却器
と、第二冷却器において生成する油と非凝縮ガスとを分
離する気液分離槽とを有する廃プラスチック油化装置に
おいて、前記気液分離槽内の油と非凝縮ガスの生成量の
時間変動量の計測値の合計値に基づいて、前記熱分解槽
の内部温度と廃プラスチックの供給速度の少なくとも一
方を調節する制御装置を備えたことを特徴とする廃プラ
スチック油化装置。2. A pyrolysis tank for pyrolyzing waste plastics,
A waste plastic supply device having a means for supplying a fixed amount of waste plastic to the pyrolysis tank, a first cooler for cooling the pyrolysis gas of the waste plastic, and a liquid heavy component generated in the first cooler and a gaseous component. A reflux tank that separates light components and circulates the liquid heavy components to the pyrolysis tank, a second cooler that cools the gaseous light components obtained in the reflux tank, and a second cooler that is produced In a waste plastic oil liquefaction apparatus having a gas-liquid separation tank for separating oil and non-condensable gas, based on a total value of measured values of time fluctuation amounts of generation amount of oil and non-condensable gas in the gas-liquid separation tank. And a controller for adjusting at least one of the internal temperature of the pyrolysis tank and the supply speed of the waste plastic.
廃プラスチックを熱分解槽に定量供給する手段を有する
廃プラスチック供給装置と、廃プラスチックの熱分解ガ
スを冷却する第一冷却器と、第一冷却器において生成し
た液状の重質成分とガス状の軽質成分とを分離し、液状
の重質成分を熱分解槽へ循環する還流槽と、還流槽にお
いて得られたガス状の軽質成分を冷却する第二冷却器
と、第二冷却器において生成する油と非凝縮ガスとを分
離する気液分離槽とを有する廃プラスチック油化装置に
おいて、前記還流槽において液状の重質成分から分離さ
れたガス状の軽質成分の生成量の時間変動量の計測値に
基づいて、前記熱分解槽の内部温度と廃プラスチックの
供給速度の少なくとも一方を調節する制御装置を備えた
ことを特徴とする廃プラスチック油化装置。3. A pyrolysis tank for pyrolyzing waste plastics,
A waste plastic supply device having a means for supplying a fixed amount of waste plastic to the pyrolysis tank, a first cooler for cooling the pyrolysis gas of the waste plastic, and a liquid heavy component generated in the first cooler and a gaseous component. A reflux tank that separates light components and circulates the liquid heavy components to the pyrolysis tank, a second cooler that cools the gaseous light components obtained in the reflux tank, and a second cooler that is produced In a waste plastic oil liquefaction apparatus having a gas-liquid separation tank for separating oil and a non-condensable gas, measurement of a time variation of a generation amount of a gaseous light component separated from a liquid heavy component in the reflux tank A waste plastic oiling device comprising a control device for adjusting at least one of an internal temperature of the pyrolysis tank and a supply speed of waste plastic based on the value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8536899A JP2000273465A (en) | 1999-03-29 | 1999-03-29 | Device for oiling waste plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8536899A JP2000273465A (en) | 1999-03-29 | 1999-03-29 | Device for oiling waste plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000273465A true JP2000273465A (en) | 2000-10-03 |
Family
ID=13856785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8536899A Pending JP2000273465A (en) | 1999-03-29 | 1999-03-29 | Device for oiling waste plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000273465A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011144331A (en) * | 2010-01-18 | 2011-07-28 | Bridgestone Corp | Heat decomposition unit for polymer-based waste, and heat decomposition method using the same |
| JPWO2013058366A1 (en) * | 2011-10-19 | 2015-04-02 | 株式会社ブレスト | Oiling equipment |
| CN108871496A (en) * | 2018-08-27 | 2018-11-23 | 北京京城环保股份有限公司 | A kind of waste plastics pyrolysis industry slag inclusion heavy oil measuring device and method |
-
1999
- 1999-03-29 JP JP8536899A patent/JP2000273465A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011144331A (en) * | 2010-01-18 | 2011-07-28 | Bridgestone Corp | Heat decomposition unit for polymer-based waste, and heat decomposition method using the same |
| JPWO2013058366A1 (en) * | 2011-10-19 | 2015-04-02 | 株式会社ブレスト | Oiling equipment |
| CN108871496A (en) * | 2018-08-27 | 2018-11-23 | 北京京城环保股份有限公司 | A kind of waste plastics pyrolysis industry slag inclusion heavy oil measuring device and method |
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