JPH03239727A - Apparatus for continuously agitating viscous substance - Google Patents
Apparatus for continuously agitating viscous substanceInfo
- Publication number
- JPH03239727A JPH03239727A JP2036062A JP3606290A JPH03239727A JP H03239727 A JPH03239727 A JP H03239727A JP 2036062 A JP2036062 A JP 2036062A JP 3606290 A JP3606290 A JP 3606290A JP H03239727 A JPH03239727 A JP H03239727A
- Authority
- JP
- Japan
- Prior art keywords
- cocoon
- liquid
- shaped plate
- members
- treated
- 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.)
- Granted
Links
- 239000011345 viscous material Substances 0.000 title claims description 7
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 36
- 238000007790 scraping Methods 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000006068 polycondensation reaction Methods 0.000 abstract description 8
- 239000010409 thin film Substances 0.000 abstract description 4
- 238000011282 treatment Methods 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
- B01F27/708—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms characterised by the shape of the stirrer as a whole, i.e. of Z- or S-shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/43—Mixing liquids with liquids; Emulsifying using driven stirrers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G85/00—General processes for preparing compounds provided for in this subclass
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、粘性物質から揮発物を除去する連続処理装置
に関し、特にポリエチレンテレフタレート等の重絽合系
高分子の連続重縮合に好適なｉＩＭ続攪拌装置に関する
ものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a continuous processing device for removing volatile matter from a viscous substance, and in particular an iIM suitable for continuous polycondensation of polysilicate polymers such as polyethylene terephthalate. This relates to a continuous stirring device.
粘性物質から揮発物を除去しながらａＳ攪拌し、重縮合
等の処理を行う装置においては、装置内のデッドスペー
スをできるだけ少なりシ、かつ、良好な表面更新が要求
される。そのために、特公昭５０−２１５１４号公報に
示すような、平行に設置した２本の回転軸に環状の支持
板を複数個固着し、それぞれの環状の支持板の先端にか
き取り板を取りつけて槽内をくまなく攪拌し、装置内壁
面のデッドスペースをできるだけ少なくすると共に、か
き取り板で被処理液を持上げ角筒状の薄膜を形成して、
液の表面更新作用を促進させたものである。このような
装置で処理する場合の最適粘度は約１００ポアズ（約１
０Ｐａ−ｓ）以上である。In an apparatus that performs aS agitation and processes such as polycondensation while removing volatile matter from a viscous substance, it is necessary to minimize dead space within the apparatus and to perform surface renewal in a good manner. For this purpose, as shown in Japanese Patent Publication No. 50-21514, a plurality of annular support plates are fixed to two rotating shafts installed in parallel, and a scraping plate is attached to the tip of each annular support plate. The inside of the tank is thoroughly stirred to minimize the dead space on the inner wall of the device, and the liquid to be treated is lifted up with a scraping plate to form a rectangular cylindrical thin film.
This promotes the surface renewal action of the liquid. The optimum viscosity for processing with such equipment is approximately 100 poise (approximately 1
0 Pa-s) or more.
上記従来技術は、低粘度の攪拌について配慮がされてお
らず、被処理液の粘度が入口側で数ポアズ（０，５Ｐａ
−ｓ ）から数十ポアズ（数Ｐａ−５）と低い場合には
−かき取り板で十分液が持ち上げられず、液の表面更新
作用が十分に得られないという問題があった。The above conventional technology does not take into consideration low viscosity stirring, and the viscosity of the liquid to be treated is several poise (0.5 Pa) at the inlet side.
-s) to several tens of poise (several Pa-5), there was a problem in that the liquid could not be sufficiently lifted by the scraping plate and the surface renewal effect of the liquid could not be obtained sufficiently.
本発明の目的は被処理液の表面更新が十分に得られ、低
粘度液の攪拌ができる粘性物質の連続攪拌装置を提供す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous stirring device for a viscous substance that can sufficiently renew the surface of a liquid to be treated and can stir a low-viscosity liquid.
上記目的を達成するために、回転軸表面に取りつけたま
ゆ形板状部材をかき取り板で連結した攪拌翼を、軸方向
に複数段配設したものである。In order to achieve the above object, a plurality of stirring blades are arranged in the axial direction in which cocoon-shaped plate-like members attached to the surface of the rotating shaft are connected by scraping plates.
数ポアズ程度の低粘度の被処理液は、まゆ形板状部材で
両サイドを仕切られたかき取り板ですくい上げられ、攪
拌翼が回転する間にかき取り部材の一端から膜状に落下
して薄膜となり、被処理液内の揮発物が蒸発する。これ
により良好な表面更新が得られる。The liquid to be treated, which has a low viscosity of several poise, is scooped up by a scraping plate partitioned on both sides by a cocoon-shaped plate-like member, and falls in a film form from one end of the scraping member while the stirring blade rotates, forming a thin film. The volatile matter in the liquid to be treated evaporates. This results in good surface renewal.
以下、本発明の一実施例を第１図ないし第４図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
図において１は、攪拌装置本体で、第３図に示す断面を
持つ筒状容器で水平に設置されており、外周を加熱ジャ
ケット７で覆われている。２ｍ。In the figure, reference numeral 1 denotes the main body of the stirring device, which is a cylindrical container having a cross section shown in FIG. 3 and is installed horizontally, and its outer periphery is covered with a heating jacket 7. 2m.
２ｂは攪拌装置本体ｌの長手方向に貫通して並設されて
いる回転軸で攪拌装置本体１両端に設けられている軸受
３に支えられている。回転軸２１゜２ｂにはそれぞれ、
袖と直角方向に複数個のまゆ形板状部材４ａ、４ｂが固
着され、この部材に直角に、該部材４ｍ、４ｂ間をかき
取り板５ａ、５ｂで連結して攪拌翼６ａ、６ｂを形成し
ている。Reference numeral 2b denotes rotating shafts that extend through the stirring device main body 1 in the longitudinal direction and are arranged in parallel, and are supported by bearings 3 provided at both ends of the stirring device main body 1. Each of the rotating shafts 21゜2b has
A plurality of cocoon-shaped plate members 4a, 4b are fixed in a direction perpendicular to the sleeve, and stirring blades 6a, 6b are formed by connecting the members 4m, 4b with scraping plates 5a, 5b at right angles to this member. are doing.
このような攪拌翼６ｍ、６ｂが軸方向から見て９０度の
位相角となるように回ＥＭ２ａ、２ｂに多段に取り付け
られ、一方の攪拌翼６ａ、６ｂの先端で他方の回転軸２
ｂ、２ａに近接して通過するように設置されている。そ
して回転軸２ｍ、 ２ｂは攪拌装置本体ｌ内の被処理
液を内側から持上げる方向に互いに逆回転させる。攪拌
＊ａｉ本体ｌの端部の下側に被処理液の入口ノズル８が
設けられ、他の端部の下側に被処理液の出口ノズル９が
設けられ、さらに、攪拌装置本体１の上部に揮発物の出
口ノズル１０が設けられている。モしてＵおよび捻はそ
れぞれ熱媒の入口ノズルおよび出口ノズルである。Such stirring blades 6m, 6b are attached to the rotary EMs 2a, 2b in multiple stages so as to have a phase angle of 90 degrees when viewed from the axial direction, and the tip of one stirring blade 6a, 6b connects to the other rotating shaft 2.
b, is installed so as to pass close to 2a. The rotating shafts 2m and 2b rotate in opposite directions to lift the liquid to be treated within the stirring device main body l from the inside. An inlet nozzle 8 for the liquid to be treated is provided on the lower side of the end of the agitation body 1, an outlet nozzle 9 for the liquid to be treated is provided on the lower side of the other end, and an outlet nozzle 9 for the liquid to be treated is provided on the lower side of the other end. is provided with a volatile outlet nozzle 10. U and U are respectively an inlet nozzle and an outlet nozzle for the heating medium.
このような装置において、入口ノズル８より供給された
被処理液は、攪拌翼６ｍ、６ｂにより攪拌混合作用を受
けながら出口ノズル９の方向に移動じ、重縮合等の目的
とする処理操作を行って出口ノズル９より連続的に取り
出され、攪拌装置本体ｌ内で発生した揮発物は出口ノズ
ル１０より取り出される。この場合、被処理液は第４図
に示すように攪拌装置本体１内でまゆ形板状部材４ａ、
（４ｂ）で仕切られたかき取り板５ｍ、（５ｂ）上にす
くい上げられ、攪拌翼６ｍ、（６ｂ）が回転する面にか
き取り部材の一端から膜状（第４図の１３）に落下して
薄膜となり、被処理液内の揮発物が蒸発する。In such an apparatus, the liquid to be treated supplied from the inlet nozzle 8 is moved toward the outlet nozzle 9 while being stirred and mixed by the stirring blades 6m and 6b, and is subjected to a desired treatment operation such as polycondensation. The volatile matter generated within the stirring device main body 1 is taken out through the outlet nozzle 10. In this case, as shown in FIG.
It is scooped up onto the scraping plate 5m divided by (4b) and (5b), and falls in a film form (13 in Figure 4) from one end of the scraping member onto the surface on which the stirring blade 6m (6b) rotates. A thin film is formed, and the volatile matter in the liquid to be treated evaporates.
本装置によりポリエチレンテレフタレート（ポリカーボ
ネート）等の連続重縮合を行う場合には、例えば、粘度
が数ポアズの中間重合物を連続供給し、加熱ジャケット
７により攪拌装置本体１内を２６０〜３００℃に加熱し
、揮発物出口ノズル１０に真空ポンプ等の減圧装！（図
示せず）を接続して約Ｉ Ｔｏｒｒから約１０ Ｔｏｒ
ｒの真空圧に保つ。攪拌装置本体ｌ内において被処理物
である中間重合物は、上述したような（第４図参照）良
好な表面更新作用を受けてエチレングリコール、水等の
揮置物を蒸発させて、重縮合が進み、数千ポアズの高粘
度重合物となって出口ノズル９より連続して取り出され
る。When performing continuous polycondensation of polyethylene terephthalate (polycarbonate) or the like using this apparatus, for example, an intermediate polymer having a viscosity of several poise is continuously supplied, and the inside of the stirring apparatus main body 1 is heated to 260 to 300°C by the heating jacket 7. And, the volatile matter outlet nozzle 10 is equipped with a vacuum pump or other pressure reducing device! (not shown) from approximately I Torr to approximately 10 Torr.
Maintain the vacuum pressure at r. The intermediate polymer to be treated in the stirring device main body 1 undergoes a good surface renewal action as described above (see Figure 4), evaporates volatile substances such as ethylene glycol and water, and polycondensation occurs. The polymer becomes a highly viscous polymer with several thousand poise and is continuously taken out from the outlet nozzle 9.
本発明の推奨される実施例によれば、第５図に示すよう
に、攪拌装置本体ｌの入口ノズル８＠（図の左＠）にま
ゆ形板状部材４ｍ、’４．ｂの数を増した（４ａ、４ｂ
間のピッチを小さく）＆袢翼６ａ’ 、 ６ ｂ’を用
い、攪拌装置本体ｌの出口ノズル９＠（図の右側）に向
うに従ってまゆ形板状部材４ａ、４ｂの数を減した（４
ａ、４ｂ間のピッチを大きく）攪拌翼６ｍ’、６ｂ’
を用いたちのである。本実施例によれば、攪拌装置本
体ｌ内の入口側の被処理液の粘度の低いところでまゆ形
板状部材を密にして被処理液をすくい上げる効果が高め
られ、攪拌装置本体ｌ内の出口側の被処理液の粘度の高
いところでは、すくい上げた被処理液の膜厚の増加を適
当量に押えられるので、攪拌装置本体ｌ内で最適な条件
で攪拌処理ができる。According to a preferred embodiment of the present invention, as shown in FIG. 5, a cocoon-shaped plate member 4m, '4. Increased the number of b (4a, 4b
The number of cocoon-shaped plate-like members 4a, 4b was reduced toward the outlet nozzle 9@ (right side in the figure) of the stirring device main body 1 by using the undercoat blades 6a', 6b' (with a smaller pitch between them)
Increase the pitch between a and 4b) Stirring blades 6m', 6b'
This is what we use. According to this embodiment, the effect of scooping up the liquid to be treated is enhanced by making the cocoon-shaped plate-like member dense at the part of the inlet side of the agitator body l where the viscosity of the liquid to be treated is low, and the effect of scooping up the liquid to be treated is enhanced. In areas where the viscosity of the liquid to be treated is high, the increase in film thickness of the scooped liquid to be treated can be suppressed to an appropriate amount, so that the stirring process can be carried out under optimal conditions within the stirring device main body l.
さらに推奨される他の実施例によれば、第６図に示すよ
うに、穴のあいたまゆ形板状部材４１′を用いたものが
あり、本実施例ではかき取り板５ａ上にすくい上げられ
た被処理液の一部がまゆ形板状部材の穴のあいた部分１
４をｉＩＩ族状に落下し、この間に揮発物の蒸発が促進
される効果が得られる。According to another recommended embodiment, as shown in FIG. Part of the liquid to be treated is in the perforated part 1 of the cocoon-shaped plate member.
4 falls in the form of group III, and during this time the evaporation of volatiles is promoted.
さらに他の実施例によれば、第７図に示すように、回転
軸２ａ、２ｂ方向の攪拌翼６ａ、６ｂ間に第８図に示す
ようなせき板巧を攪拌装置本体ｌの下半分に取りつけて
、該本体内を複数段に仕切ったものがある。本実施例に
よれば、かき取り板５ａ、Ｓｂ上にすくい上げた被処理
液が、回転軸２ａ、２ｂの方向に流れ落ちて攪拌装置本
体ｌの長手方向に逆混合又はソ冒−トパスが起ることが
防止でき、攪拌装置本体１内をピストンフローの状態に
近づけ、被処理液の品質を高めることができる。According to still another embodiment, as shown in FIG. 7, a weir plate as shown in FIG. There is one that is attached and partitions the inside of the main body into multiple stages. According to this embodiment, the liquid to be treated that has been scooped up onto the scraping plates 5a and Sb flows down in the direction of the rotating shafts 2a and 2b, and back mixing or a soaking pass occurs in the longitudinal direction of the stirring device main body l. This makes it possible to bring the interior of the stirring device main body 1 close to a piston flow state, thereby improving the quality of the liquid to be treated.
また、他の実施例においては、第５図の出口ノズル９（
図の右側）側に示すように、まゆ形板状部材４ａ、４ｂ
の外側にかき取すリブ１６を設けた６のがある。本実施
例では、リブ１６により、攪拌翼６ｍ’、６ｂ’ の
回転軸方向のそれぞれの間隙の啓処理液の攪拌が促進で
きる。In other embodiments, the outlet nozzle 9 (
As shown on the right side of the figure, cocoon-shaped plate members 4a and 4b
There is a type 6 which has a rib 16 to be scraped on the outside. In this embodiment, the ribs 16 can promote stirring of the processing liquid in the respective gaps in the rotational axis direction of the stirring blades 6m' and 6b'.
なお本発明の連続攪拌装置を用いて、低粘度域での揮発
物蒸発性能を高め、処理粘度範囲を拡げた重縮合系高分
子の連続重合を行うこともできる。The continuous stirring apparatus of the present invention can also be used to perform continuous polymerization of polycondensation polymers with improved volatile matter evaporation performance in a low viscosity region and a wider treatment viscosity range.
本発明によれば、比較的低粘度液からの揮発物の蒸発が
促進できるので、被処理液の表面更新が十分に得られ、
広い粘度範囲の重縮合等の連続処理を短い滞留時間で行
うことができる。According to the present invention, since the evaporation of volatiles from a relatively low viscosity liquid can be promoted, the surface of the liquid to be treated can be sufficiently renewed.
Continuous processing such as polycondensation over a wide viscosity range can be performed in a short residence time.
第１図は本発明の一実施例の連続攪拌！！置の部分断面
平面図、第２図はｉＪ１図の１−量線部分断面正面図、
第３図は第１図の１−１線断面図、第４図は被処理液の
流下を示す説明図、第５図ないし第８図は本発明の他の
実施例の説明図である。Figure 1 shows continuous stirring in one embodiment of the present invention! ! Figure 2 is a partial cross-sectional front view of the 1-dose line of Figure iJ1,
3 is a sectional view taken along the line 1-1 in FIG. 1, FIG. 4 is an explanatory diagram showing the flow of the liquid to be treated, and FIGS. 5 to 8 are explanatory diagrams of other embodiments of the present invention.
Claims (1)
容器内部に平行に２本の回転軸を設け、一端に被処理液
の入口を、他端に被処理液の出を有する連続攪拌装置に
おいて、 前記２本の回転軸にそれぞれ相対応して軸と直角方向に
複数個のまゆ形板状部材を固着し、該まゆ形板状部材に
直角に板状部材間をかき取り板で連結して攪拌翼を形成
し、前記２本の回転軸に取付けられた相互に対応する該
攪拌翼が軸方向から見て９０度の位相角になるように配
置し、前記２本の回転軸を一方の攪拌翼の先端が他方の
回転軸に近接して通過するように設置し、かつ、容器本
体の内側より外側に向って互いに反対方向に回転させ、
板状部材で仕切られたかき取り板で被処理液をかき上げ
るように構成したことを特徴とする粘性物質の連続攪拌
装置。 ２、前記複数個のまゆ形板状部材は、容器本体の入口側
でまゆ形板状部材の数を増し、出口側に向ってその数を
順次減らしたことを特徴とする請求項第１項記載の粘性
物質の連続攪拌装置。 ３、前記容器本体は、複数個のまゆ形板状部材とかき取
り板で形成した前記攪拌翼の回転軸方向の相互の間隙に
せき板を設け、容器本体内を長手方向に複数段に仕切っ
たことを特徴とする請求項第１項記載の粘性物質の連続
攪拌装置。[Claims] 1. Two rotating shafts are provided in parallel inside a cylindrical container that is equipped with a heating device and installed substantially horizontally, and an inlet for the liquid to be treated is provided at one end and an inlet is provided at the other end. In a continuous stirring device having an output of the liquid to be treated, a plurality of cocoon-shaped plate-like members are fixed to each of the two rotating shafts in a direction perpendicular to the shaft, respectively, and a plurality of cocoon-shaped plate-like members are fixed at right angles to the cocoon-shaped plate-like members, respectively. A stirring blade is formed by connecting the plate-like members with a scraping plate, and the mutually corresponding stirring blades attached to the two rotating shafts have a phase angle of 90 degrees when viewed from the axial direction. and the two rotating shafts are installed so that the tip of one stirring blade passes close to the other rotating shaft, and are rotated in opposite directions from the inside to the outside of the container body,
A continuous stirring device for a viscous substance, characterized in that it is configured to scrape up a liquid to be treated with a scraping plate partitioned by a plate-like member. 2. Claim 1, wherein the plurality of cocoon-shaped plate-like members are increased in number on the inlet side of the container main body, and gradually decreased in number toward the outlet side. A device for continuously stirring the viscous substance described above. 3. The container main body is provided with a weir plate in the mutual gap in the rotational axis direction of the stirring blades formed by a plurality of cocoon-shaped plate-like members and scraping plates, and partitions the inside of the container main body into a plurality of stages in the longitudinal direction. The continuous stirring device for viscous substances according to claim 1, characterized in that:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2036062A JPH0819241B2 (en) | 1990-02-19 | 1990-02-19 | Continuous stirring device for viscous substances |
| KR1019910002340A KR910021257A (en) | 1990-02-19 | 1991-02-12 | Continuous stirring apparatus and method of viscous material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2036062A JPH0819241B2 (en) | 1990-02-19 | 1990-02-19 | Continuous stirring device for viscous substances |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03239727A true JPH03239727A (en) | 1991-10-25 |
| JPH0819241B2 JPH0819241B2 (en) | 1996-02-28 |
Family
ID=12459231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2036062A Expired - Lifetime JPH0819241B2 (en) | 1990-02-19 | 1990-02-19 | Continuous stirring device for viscous substances |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0819241B2 (en) |
| KR (1) | KR910021257A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05288655A (en) * | 1992-04-08 | 1993-11-02 | Showa Shell Sekiyu Kk | Analyzer for volatile component from asphalt |
| JP2010248531A (en) * | 2010-08-09 | 2010-11-04 | Hitachi Plant Technologies Ltd | Apparatus for producing polybutylene terephthalate, and method therefor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100751837B1 (en) * | 2006-09-26 | 2007-08-29 | 최종호 | Continuous and multipurpose mixer |
| JP4428417B2 (en) | 2007-07-19 | 2010-03-10 | 株式会社日立プラントテクノロジー | Polyester production apparatus and method |
-
1990
- 1990-02-19 JP JP2036062A patent/JPH0819241B2/en not_active Expired - Lifetime
-
1991
- 1991-02-12 KR KR1019910002340A patent/KR910021257A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05288655A (en) * | 1992-04-08 | 1993-11-02 | Showa Shell Sekiyu Kk | Analyzer for volatile component from asphalt |
| JP2010248531A (en) * | 2010-08-09 | 2010-11-04 | Hitachi Plant Technologies Ltd | Apparatus for producing polybutylene terephthalate, and method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0819241B2 (en) | 1996-02-28 |
| KR910021257A (en) | 1991-12-20 |
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