JPH0372646B2 - - Google Patents
Info
- Publication number
- JPH0372646B2 JPH0372646B2 JP57078207A JP7820782A JPH0372646B2 JP H0372646 B2 JPH0372646 B2 JP H0372646B2 JP 57078207 A JP57078207 A JP 57078207A JP 7820782 A JP7820782 A JP 7820782A JP H0372646 B2 JPH0372646 B2 JP H0372646B2
- Authority
- JP
- Japan
- Prior art keywords
- condenser
- polymerized
- monomer
- polymerization
- polymerization reaction
- 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
- 239000000178 monomer Substances 0.000 claims description 25
- 238000006116 polymerization reaction Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000012662 bulk polymerization Methods 0.000 claims description 8
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229920001890 Novodur Polymers 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
本発明は、熱可塑性樹脂の連続塊状重合法に係
り、特にスチレン系樹脂を連続的に製造するのに
好適な熱可塑性樹脂の連続塊状重合法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous bulk polymerization method for thermoplastic resins, and particularly to a continuous bulk polymerization method for thermoplastic resins suitable for continuously producing styrenic resins.
スチレン系樹脂等熱可塑性樹脂の連続塊状重合
においては、撹拌混合されている被重合物の塊状
重合反応で生じる反応熱および撹拌熱を除去する
ことが最重要課題である。この反応熱および撹拌
熱を除去する方法として、特公昭53−46871号、
特公昭55−50951号および特願昭54−141348号が
提案されている。 In the continuous bulk polymerization of thermoplastic resins such as styrene resins, the most important issue is to remove the reaction heat and stirring heat generated in the bulk polymerization reaction of the materials to be polymerized that are being stirred and mixed. As a method for removing this reaction heat and stirring heat, Japanese Patent Publication No. 53-46871,
Japanese Patent Publication No. 55-50951 and Japanese Patent Application No. 54-141348 have been proposed.
この内、特公昭53−46871号、特公昭55−50961
号記載の方法は、撹拌混合されている被重合物の
表面に水等の被重合物より沸点が低い非溶媒を散
布して蒸発させ反応熱および撹拌熱を除去するも
のである。 Among these, Special Publication No. 53-46871, Special Publication No. 50961, No. 55-50961
In the method described in the above issue, a non-solvent having a boiling point lower than that of the material to be polymerized, such as water, is sprayed onto the surface of the material to be polymerized, which is being stirred and mixed, and evaporated to remove reaction heat and stirring heat.
このような方法では、次のような欠点があつ
た。 This method has the following drawbacks.
(1) 重合物中に非溶媒が残留し製品の品質が劣化
する。(1) Non-solvent remains in the polymer and product quality deteriorates.
(2) ギアポンプ等の重合物の抜出し装置の部分で
非溶媒が分離し、重合物の安定した抜出しが阻
害される。(2) The non-solvent separates in the polymer extraction device such as a gear pump, which impedes stable extraction of the polymer.
また、特願昭54−141348号記載の方法は、撹拌
混合されている被重合物の表面にモノマを散布し
て蒸発させ反応熱および撹拌熱を除去するもので
ある。この方法を第１図により説明する。 In addition, the method described in Japanese Patent Application No. 141348/1983 involves spraying the monomer onto the surface of the material to be polymerized, which is being stirred and mixed, and evaporating it to remove the heat of reaction and the heat of stirring. This method will be explained with reference to FIG.
第１図で、重合器本体（以下、本体と略）１０
には、駆動装置（図示省略）で回転する回転軸１
１に串差し状態で設けられた撹拌翼１２が回転可
能に内設されている。本体１０の頂部には、散布
器１３とノズル１４とが設けられ、底部両側に
は、ノズル１５，１６とが設けられている。凝縮
器２０には、Ｕ字型の伝熱管２１が内設されてい
る。凝縮器２０の上部および底部には、ノズル２
２，２３が設けられている。ノズル１４とノズル
２２とは、導管３０で連結されている。散布器１
３とノズル２３とは、送液ポンプ４０が設けられ
た導管３１で連結されている。伝熱管２１には、
冷却水供給用の導管３２と冷却水排出用の導管３
３とが連結されている。 In Figure 1, the polymerization vessel main body (hereinafter abbreviated as main body) 10
, there is a rotating shaft 1 rotated by a drive device (not shown).
A stirring blade 12 provided in a skewered manner in 1 is rotatably installed inside. A sprayer 13 and a nozzle 14 are provided at the top of the main body 10, and nozzles 15 and 16 are provided at both sides of the bottom. A U-shaped heat transfer tube 21 is installed inside the condenser 20 . Nozzles 2 are installed at the top and bottom of the condenser 20.
2 and 23 are provided. Nozzle 14 and nozzle 22 are connected by a conduit 30. Spreader 1
3 and the nozzle 23 are connected through a conduit 31 provided with a liquid feeding pump 40. In the heat exchanger tube 21,
Conduit 32 for cooling water supply and conduit 3 for cooling water discharge
3 are connected.
本体１０には、ノズル１５より中間重合物又は
モノマ等の被重合物が供給れる。本体１０に供給
された被重合物は、撹拌翼１２で撹拌混合されな
がら本体１０を第１図では左から右方向へ移動す
る。この間、被重合物の重合反応が行われる訳で
あるが、この重合反応で生じる反応熱および撹拌
熱は、散布器１３より被重合物の表面にモノマを
散布し、このモノマを蒸発させることで除去され
る。蒸発したモノマは、本体１０からノズル１
４、導管３０、ノズル２２を経て凝縮器２０に導
入される。凝縮器２０に導入された気体状のモノ
マは、導管３２より伝熱管２１に供給され伝熱管
２１を流通した後に導管３３より排出される冷却
水で凝縮、液化する。凝縮、液化したモノマは、
凝縮器２０から送液ポンプ４０を介しノズル２
３、導管３１を経て散布器１３に循環供給され、
散布器１３より被重合物の表面に再び散布され
る。なお、重合反応が完了し得られた重合物は、
ノズル１６より取出される。 A material to be polymerized, such as an intermediate polymer or a monomer, is supplied to the main body 10 from a nozzle 15 . The material to be polymerized supplied to the main body 10 moves from the left to the right in FIG. 1 through the main body 10 while being stirred and mixed by the stirring blades 12. During this time, a polymerization reaction of the material to be polymerized takes place, and the reaction heat and stirring heat generated in this polymerization reaction can be absorbed by spraying monomer onto the surface of the material to be polymerized from the sprayer 13 and evaporating the monomer. removed. The evaporated monomer is transferred from the main body 10 to the nozzle 1.
4, is introduced into the condenser 20 via the conduit 30 and the nozzle 22. The gaseous monomer introduced into the condenser 20 is supplied to the heat exchanger tube 21 through the conduit 32, flows through the heat exchanger tube 21, and is then condensed and liquefied by cooling water discharged from the conduit 33. The condensed and liquefied monomer is
From the condenser 20 to the nozzle 2 via the liquid sending pump 40
3. Circulatingly supplied to the sprayer 13 via the conduit 31,
It is again sprayed onto the surface of the material to be polymerized by the sprayer 13. In addition, the polymer obtained after the polymerization reaction is completed is
It is taken out from the nozzle 16.
このような方法では、特公昭53−46871号、特
公昭55−50961号記載の方法が有する上記欠点は
解消されるものの、凝縮器の伝熱管表面に凝縮し
たモノマの一部が、凝縮器に導入された気体状モ
ノマにより加熱されて重合反応を起し、スケール
となつて付着、集積するため、このスケール除去
するには運転を一旦停止する必要があり、したが
つて、重合装置を連続して運転できないといつた
欠点があつた。 Although such a method eliminates the above-mentioned drawbacks of the methods described in Japanese Patent Publication No. 53-46871 and Japanese Patent Publication No. 55-50961, some of the monomer condensed on the surface of the heat exchanger tube of the condenser The introduced gaseous monomer heats up and causes a polymerization reaction, which adheres and accumulates as scale. To remove this scale, it is necessary to temporarily stop the operation. One of the drawbacks was that I couldn't drive.
本発明の目的は、上記欠点を解消することで、
重合装置を連続的に運転できる熱可塑性樹脂の連
続塊状重合法を提供することにある。 The purpose of the present invention is to eliminate the above-mentioned drawbacks,
An object of the present invention is to provide a continuous bulk polymerization method for thermoplastic resins in which a polymerization apparatus can be operated continuously.
本発明の特徴は、撹拌混合され重合反応で蒸発
したモノマを重合反応を起さない温度以下となる
ような圧力に調節された凝縮器で凝縮、液化し、
該凝縮、液化したモノマを循環させて前記撹拌混
合されている被重合物の表面に散布することで、
凝縮器でのスケールの付着、集積を防止して重合
装置を連続して運転できるようにしたことにあ
る。 The present invention is characterized by condensing and liquefying the monomers that have been stirred and mixed and evaporated during the polymerization reaction in a condenser whose pressure is adjusted to a temperature below which the polymerization reaction does not occur.
By circulating the condensed and liquefied monomer and scattering it on the surface of the material to be polymerized which is being stirred and mixed,
The purpose is to prevent scale adhesion and accumulation in the condenser and to enable continuous operation of the polymerization equipment.
本発明の一実施例を第２図により説明する。 An embodiment of the present invention will be explained with reference to FIG.
第２図は、本発明を実施した重合装置の部分系
統図で、なお、第２図で、第１図と同一機器等は
同一符号で示し説明を省略する。 FIG. 2 is a partial system diagram of a polymerization apparatus in which the present invention is implemented. In FIG. 2, the same equipment as in FIG.
第２図で、凝縮器２０と排気装置５０とは、導
管３４で連結されている。導管３４には、圧力調
節計６０と圧力調節弁７０とが設けられている。
圧力調節計６０と圧力調節弁７０とは、接続され
ている。導管３０には、調圧弁７１が設けられて
いる。 In FIG. 2, the condenser 20 and exhaust device 50 are connected by a conduit 34. The conduit 34 is provided with a pressure regulator 60 and a pressure regulating valve 70.
The pressure regulator 60 and the pressure regulating valve 70 are connected. A pressure regulating valve 71 is provided in the conduit 30 .
凝縮器２０内は、排気装置５０によりモノマが
重合反応を起さない温度以下、例えば、モノマが
スチレンモノマである場合には60℃以下となるよ
うな圧力に減圧される。この凝縮器２０内の圧力
は、圧力調節計６０により圧力調節弁７０の弁開
度を調節することで運転期間中適正に保持され
る。一方、本体１０の圧力は、被重合物の塊状重
合物反応に要する圧力に調圧弁７１により調節さ
れている。 The pressure inside the condenser 20 is reduced by an exhaust device 50 to a temperature below which the monomer does not cause a polymerization reaction, for example, when the monomer is a styrene monomer, the pressure is below 60°C. The pressure within the condenser 20 is maintained appropriately during the operation period by adjusting the opening degree of the pressure regulating valve 70 using the pressure regulator 60. On the other hand, the pressure of the main body 10 is regulated by a pressure regulating valve 71 to the pressure required for the bulk polymer reaction of the material to be polymerized.
撹拌混合されている被重合物の表面に散布器１
３で散布され、反応熱および撹拌熱を除去するこ
とで蒸発したモノマは、調圧弁７１を介しノズル
１４、導管３０、ノズル２２を経て凝縮器２０に
導入される。凝縮器２０に導入された気体状のモ
ノマは、導管３２より伝熱管２１に供給され伝熱
管２１を流通した後に導管３３より排出される冷
却水で凝縮、液化する。この場合、凝縮器２０内
の圧力はモノマが重合反応を起さない温度以下と
なるような圧力に調節、保持されているため、気
体状のモノマの温度は、この状態で低下し、それ
につれ気体状のモノマは凝縮、液化する。その
後、凝縮、液化したモノマは、凝縮器２０から送
液ポンプ４０を介しノズル２３、導管３１を経て
散布器１３に循環供給され、散布器１３より被重
合物の表面に再び散布される。 Spreader 1 on the surface of the material to be polymerized which is being stirred and mixed.
The monomer dispersed in step 3 and evaporated by removing the reaction heat and stirring heat is introduced into the condenser 20 via the pressure regulating valve 71, the nozzle 14, the conduit 30, and the nozzle 22. The gaseous monomer introduced into the condenser 20 is supplied to the heat exchanger tube 21 through the conduit 32, flows through the heat exchanger tube 21, and is then condensed and liquefied by cooling water discharged from the conduit 33. In this case, the pressure inside the condenser 20 is adjusted and maintained at a pressure below the temperature at which the monomer does not cause a polymerization reaction, so the temperature of the gaseous monomer decreases in this state, and accordingly Gaseous monomers condense and liquefy. Thereafter, the condensed and liquefied monomer is circulated from the condenser 20 via the liquid feed pump 40 to the sprayer 13 via the nozzle 23 and the conduit 31, and is again sprayed onto the surface of the material to be polymerized by the sprayer 13.
本実施例のような熱可塑性樹脂の連続塊状重合
法では、凝縮器で凝縮、液化されるモノマが重合
反応を起さないため、凝縮器でのスケールの付
着、集積を防止でき重合装置を連続して運転する
ことができる。 In the continuous bulk polymerization method for thermoplastic resins as in this example, the monomer that is condensed and liquefied in the condenser does not undergo a polymerization reaction, so it is possible to prevent scale adhesion and accumulation in the condenser, and it is possible to continuously operate the polymerization equipment. and can be driven.
本発明は、撹拌混合され重合反応で蒸発したモ
ノマを重合反応を起さない温度以下となるような
圧力に調節された凝縮器で凝縮、液化し、該凝
縮、液化したモノマを循環させて前記撹拌混合さ
れている被重合物の表面に散布することで、凝縮
器でのスケールの付着、集積を防止できるので、
重合装置を連続して運転できる効果がある。 The present invention condenses and liquefies the monomers that have been stirred and mixed and evaporated during the polymerization reaction in a condenser whose pressure is adjusted to a temperature below which no polymerization reaction occurs, and circulates the condensed and liquefied monomers. By spraying it on the surface of the material being stirred and mixed, scale adhesion and accumulation in the condenser can be prevented.
This has the effect of allowing the polymerization equipment to be operated continuously.
第１図は、従来の重合装置の部分系統図、第２
図は、本発明を実施した重合装置の一実施例を示
す部分系統図である。
１０……本体、１１……回転軸、１２……撹拌
翼、１３……散布器、１４から１６，２２，２３
……ノズル、２０……凝縮器、２１……伝熱管、
３０から３４……導管、４０……送液ポンプ、５
０……排気装置、６０……圧力調節計、７０……
圧力調節弁、７１……調圧弁。
Figure 1 is a partial system diagram of a conventional polymerization apparatus;
The figure is a partial system diagram showing an embodiment of a polymerization apparatus in which the present invention is implemented. 10... Main body, 11... Rotating shaft, 12... Stirring blade, 13... Spreader, 14 to 16, 22, 23
... Nozzle, 20 ... Condenser, 21 ... Heat exchanger tube,
30 to 34...conduit, 40...liquid pump, 5
0... Exhaust device, 60... Pressure controller, 70...
Pressure regulating valve, 71...Pressure regulating valve.
Claims (1)
を配設し、前記本体の長手方向の一方に被重合物
の入口を設け、他方に前記被重合物の出口を設け
てなる連続重合機により撹拌混合されている被重
合物の表面に、該重合反応で蒸発したモノマを凝
縮、液化後循環させて散布し、連続的に塊状重合
反応を行わせる方法において、 前記蒸発したモノマの温度が重合反応を起さな
い温度以下となるように前記凝縮器の圧力を排気
用圧力調節手段で調節し、該凝縮器で冷却して凝
縮、液化させたモノマを前記被重合物の表面に散
布することを特徴とする熱可塑性樹脂の連続塊状
重合法。[Scope of Claims] 1. A rotating shaft with a stirring blade fixed thereon is disposed inside a cylindrical body, an inlet for a material to be polymerized is provided on one side in the longitudinal direction of the body, and an outlet for the material to be polymerized is provided on the other side. In the method of carrying out the bulk polymerization reaction continuously, the monomers evaporated in the polymerization reaction are condensed, liquefied, and then circulated and sprinkled on the surface of the material to be polymerized which is being stirred and mixed by a continuous polymerization machine provided. The pressure of the condenser is adjusted by the exhaust pressure adjusting means so that the temperature of the evaporated monomer is below the temperature at which no polymerization reaction occurs, and the monomer that has been cooled, condensed, and liquefied in the condenser is transferred to the polymerization target. A continuous bulk polymerization method for thermoplastic resin that is characterized by spraying it onto the surface of an object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7820782A JPS58196204A (en) | 1982-05-12 | 1982-05-12 | Continuous mass polymerization method of thermoplastic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7820782A JPS58196204A (en) | 1982-05-12 | 1982-05-12 | Continuous mass polymerization method of thermoplastic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58196204A JPS58196204A (en) | 1983-11-15 |
| JPH0372646B2 true JPH0372646B2 (en) | 1991-11-19 |
Family
ID=13655582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7820782A Granted JPS58196204A (en) | 1982-05-12 | 1982-05-12 | Continuous mass polymerization method of thermoplastic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58196204A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146390A (en) * | 1974-08-16 | 1976-04-20 | Bayer Ag | Binirukagobutsuno muyobairenzokujugoho |
-
1982
- 1982-05-12 JP JP7820782A patent/JPS58196204A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146390A (en) * | 1974-08-16 | 1976-04-20 | Bayer Ag | Binirukagobutsuno muyobairenzokujugoho |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58196204A (en) | 1983-11-15 |
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