JPH085821B2 - Chlorination reactor - Google Patents
Chlorination reactorInfo
- Publication number
- JPH085821B2 JPH085821B2 JP2204548A JP20454890A JPH085821B2 JP H085821 B2 JPH085821 B2 JP H085821B2 JP 2204548 A JP2204548 A JP 2204548A JP 20454890 A JP20454890 A JP 20454890A JP H085821 B2 JPH085821 B2 JP H085821B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- liquid
- tube
- pipe
- heat transfer
- 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
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、例えばアリルアルコールを塩酸水溶液中で
塩素と反応させ２・３−ジクロルプロパノールを生成さ
せるような塩素化反応を効率よく行なう濡壁式の塩素化
反応器に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a wet method for efficiently carrying out a chlorination reaction such as reaction of allyl alcohol with chlorine in an aqueous hydrochloric acid solution to form 2,3-dichloropropanol. It relates to a wall type chlorination reactor.
［従来の技術］ 従来、塩素化反応は、攪拌機および冷却器を有する槽
型反応器に有機冷媒、或いは塩酸水溶液を入れ、これに
被塩素化有機物を溶解し、攪拌、冷却しながら塩素を吸
込んで反応させている。しかし、一般に塩素化反応は、
反応熱の高い反応であるにも拘わらず、反応温度は比較
的低いことが要求される。そのため、上記方式では、伝
熱面積が十分にとれず、また冷却負荷を工業的に実用範
囲に止めようとすると、必然的に反応時間が長くなる。
反応時間が長くなると生産効率が低下し、また反応の種
類によっては、副生物が多くなる等の不都合を生ずる。[Prior Art] Conventionally, in the chlorination reaction, an organic refrigerant or an aqueous hydrochloric acid solution is put into a tank reactor having a stirrer and a cooler, and an organic substance to be chlorinated is dissolved therein, and chlorine is sucked in while stirring and cooling. I am making it react. However, in general, the chlorination reaction is
Despite the high heat of reaction, the reaction temperature is required to be relatively low. Therefore, in the above method, the heat transfer area cannot be sufficiently taken, and if the cooling load is industrially limited to the practical range, the reaction time inevitably becomes long.
When the reaction time is long, the production efficiency is lowered, and depending on the type of reaction, there are disadvantages such as an increase in by-products.
そのため、管状の塔の上部から、内壁或いは外壁に原
料液を薄膜状に流下させ、同時に塔の下部または上部よ
り塩素を導入して向流または並流で接触反応させる濡壁
式の塩素化反応器が使用されるようになった。Therefore, a wet-wall chlorination reaction in which the raw material liquid is made to flow down in a thin film form from the upper part of the tubular tower to the inner wall or the outer wall, and chlorine is introduced from the lower part or the upper part of the tower at the same time to cause a countercurrent or cocurrent contact reaction. Vessels have come to be used.
しかしながら、塩素化は非常に速い反応であって、塔
上部での局部反応を抑制することが求められ、又濡壁式
反応器は壁面を流下する液膜の厚さを薄くしなければな
らないため、反応処理量を増大するには、濡壁塔の径を
大きくして、液の流下面積を拡大しなければならず、一
本当たりの濡壁面積は大きくなるが、設置面積当たりの
濡壁面積は小さくなる不都合を生ずる。However, chlorination is a very fast reaction, and it is required to suppress the local reaction in the upper part of the tower, and in the wet wall type reactor, the thickness of the liquid film flowing down the wall surface must be thin. In order to increase the reaction processing amount, the diameter of the wetting wall tower must be increased to increase the liquid flow-down area, and the wetting wall area per line is large, but the wetting wall per installation area is large. There is a disadvantage that the area becomes small.
本発明者らは、上記の問題を解決すべく、鋭意検討し
た結果、多管式熱交換器状の濡壁を用い管外部に冷媒を
流して冷却し、管内部に均一に反応液および塩素を分配
導入することができれば、効率よく低い反応温度でかつ
高い冷却能力を持つ装置で塩素化反応器が行なわれると
考えた。The inventors of the present invention have conducted extensive studies to solve the above problems, and as a result, use a multi-tube heat exchanger-like wetting wall to flow a refrigerant to the outside of the tube to cool it, and to uniformly mix the reaction solution and chlorine inside the tube. It was thought that the chlorination reactor would be efficiently operated at a low reaction temperature and a high cooling capacity if it could be distributed and introduced.
本発明は上記の考えに基づいてなされたもので、コン
パクトで、効率よく反応生成物が得られる塩素化反応器
を提供することを目的とする。The present invention has been made based on the above idea, and an object thereof is to provide a compact chlorination reactor capable of efficiently obtaining a reaction product.
［課題を解決するための手段］ 上記の目的を達成するため、本発明の塩素化反応器は
冷媒の導入管および導出管が外面上下に設けられ、水平
な上管板および下管板が設けられ、これら上管板および
下管板の間には多数の垂直な伝熱管が取付けられ、前記
伝熱管を介して、前記上管板の上部および下管板の下部
が連通されている筒状の胴部と、 導出入管が取付けられている、前記胴部の下管板を覆
う下カバーと、 水平な整流板によって、液導入管を有する下部の液貯
留部およびガス導入管を有する上部のガス貯留部に２分
割され、上部が密閉されている前記上管板を覆う上カバ
ーとを有し、前記上管板上面には、伝熱管の延長上にそ
れぞれ位置する分配管が取付けられ、これら分配管の前
記上管板の上面近傍には液孔が穿設され、前記分配管の
先端は、前記整流板に近接し、かつ整流板に穿設され
た、オリフィス部を有する整流板孔とをそれぞれ対向し
ている。[Means for Solving the Problems] In order to achieve the above object, in the chlorination reactor of the present invention, a refrigerant inlet pipe and a refrigerant outlet pipe are provided above and below the outer surface, and a horizontal upper tube plate and a lower tube plate are provided. A plurality of vertical heat transfer tubes are attached between the upper tube plate and the lower tube plate, and a cylindrical body in which the upper part of the upper tube plate and the lower part of the lower tube plate are communicated with each other via the heat transfer tubes. Part, a lower cover that covers the lower tube plate of the body part to which the lead-in / out pipe is attached, and a horizontal liquid straightening plate that allows a lower liquid storage part having a liquid introduction pipe and an upper gas storage part having a gas introduction pipe. An upper cover that covers the upper tube sheet that is divided into two parts and that has an upper portion that is hermetically sealed. On the upper surface of the upper tube sheet, distribution pipes that are respectively located on extensions of the heat transfer tubes are attached. A liquid hole is formed near the upper surface of the upper tube plate of the pipe, and the distribution pipe Tip, adjacent to the current plate, and is formed in the rectifying plate, and a rectifier plate hole having an orifice portion opposed respectively.
［作用］ 本発明の塩素化反応器は上記の構成となっているの
で、塩素ガスは、ガス貯留部に一定の圧で保持され、整
流板孔に設けられたオリフィスを通って、伝熱管に供給
されるので、それぞれの伝熱管に供給される塩素量は均
一となる。[Operation] Since the chlorination reactor of the present invention has the above-mentioned configuration, the chlorine gas is held in the gas storage portion at a constant pressure, passes through the orifice provided in the flow straightening plate hole, and enters the heat transfer tube. Since they are supplied, the amount of chlorine supplied to each heat transfer tube becomes uniform.
また、反応液は、一定の液深に保持された液貯留部か
ら液孔を介して分配管に導入され、かつ、分配管先端と
整流板下面には間隙が設けられているので、内外ヘッド
差は一定となり、液はそれぞれの分配管に均一に導入さ
れる。しかも、前記オリフィス部を通って分配管に吹込
まれる塩素は、エジェクタ作用を有するので塩素が間隙
より液貯留部に流入することが殆どない。Further, the reaction liquid is introduced into the distribution pipe through the liquid hole from the liquid storage portion held at a constant liquid depth, and a gap is provided between the distribution pipe tip and the lower surface of the straightening plate. The difference is constant and the liquid is uniformly introduced into each distribution pipe. Moreover, the chlorine blown into the distribution pipe through the orifice portion has an ejector function, so that chlorine hardly flows into the liquid storage portion through the gap.
［実施例］ 本発明の塩素化反応器は、腐食生の高い原料が使用さ
れるため、耐腐食性の材料を用いなければならない。そ
のため、装置には、合成塩酸等の装置材料として広く使
用されている炭素材（カーベイト）或いは硝子ライニン
グ材等が用いられる。[Example] In the chlorination reactor of the present invention, since a raw material having a high corrosion rate is used, a corrosion resistant material must be used. Therefore, a carbon material (carbate), a glass lining material, or the like, which is widely used as a device material, such as synthetic hydrochloric acid is used for the device.
第１図ないし第２図は、本発明に係る塩素化反応器１
の一実施例を示すもので、第１図は縦断面図である。1 and 2 show a chlorination reactor 1 according to the present invention.
FIG. 1 is a longitudinal sectional view showing an embodiment.
図中符号２は円筒状の胴部で、この胴部２には、胴部
２内部に冷媒を導入、導出する導入管３、導出管４が設
けられている。また前記胴部２の上下の開口部には、水
平な上管板５および下管板６が取付けられている。これ
ら上管板５および下管板６間には、第２図に横断面を示
すように多数の伝熱管７が取付けられている。前記上管
板５、および下管板６には、それぞれ、伝熱管７に、前
記伝熱管７を介して上管板５の上部および下管板６の下
部を連通する上孔８、下孔９が設けられている。In the figure, reference numeral 2 is a cylindrical body portion, and the body portion 2 is provided with an introduction pipe 3 and a lead-out pipe 4 for introducing and discharging the refrigerant into the body portion 2. Horizontal upper and lower tube plates 5 and 6 are attached to the upper and lower openings of the body 2. A large number of heat transfer tubes 7 are attached between the upper tube sheet 5 and the lower tube sheet 6 as shown in the cross section in FIG. The upper tube plate 5 and the lower tube plate 6 respectively have an upper hole 8 and a lower hole that connect the heat transfer tube 7 to the upper part of the upper tube plate 5 and the lower part of the lower tube plate 6 via the heat transfer tube 7. 9 is provided.
前記伝熱管７には、これらに直交する邪魔板10が邪魔
板ステー11によって支持され、間隔をおいて配置されて
いる。また、前記胴部２の外面には反応器を垂直に支持
する支持脚12が取付けられている。A baffle plate 10 orthogonal to the heat transfer pipes 7 is supported by a baffle plate stay 11 and arranged at intervals. Support legs 12 for vertically supporting the reactor are attached to the outer surface of the body 2.
前記胴部２の下部には下管板６を覆って下カバー13が
取付けられ、この下カバー13にはガス導出管14、液導出
管15および原料液導入管16が設けられている。A lower cover 13 is attached to the lower part of the body 2 so as to cover the lower tube sheet 6, and a gas outlet pipe 14, a liquid outlet pipe 15 and a raw material liquid inlet pipe 16 are provided in the lower cover 13.
また前記胴部２の上部には上管板５を覆って、水平な
整流板21によって下部の液貯留部22、上部のガス貯留部
23に２分割され、このガス貯留部23が、蓋部24によって
密閉されている上カバー25が取付けられている。前記液
貯留部22には、反応液の導入管26が取付けられ、ガス貯
留部23の蓋部24には、ガス貯留部23内に塩素を導入する
導入管27が取付けられている。Further, the upper tube plate 5 is covered on the upper part of the body part 2, and the horizontal liquid straightening plate 21 is used to form the lower liquid storage part 22 and the upper gas storage part
An upper cover 25, which is divided into two and is closed by a lid portion 24, is attached to the gas storage portion 23. A reaction liquid introduction pipe 26 is attached to the liquid storage portion 22, and an introduction pipe 27 for introducing chlorine into the gas storage portion 23 is attached to the lid portion 24 of the gas storage portion 23.
また、第１図中のＡおよびＢ部分の拡大図を第３図お
よび第４図に示すように、前記上孔８には、伝熱管７の
延長上に分配管28の基部が取付けられ、その先端は前記
整流板21の下面に近接し、間隔29が設けられている。前
記分配管28の先端開口部は、前記整流板21に穿設され
た、オリフィス部30を有する整流板孔31と対向してい
る。また、前記分配管28の前記上管板５の上面近傍に
は、第５図に示すように、液孔32が２個穿設されてい
る。Further, as shown in FIGS. 3 and 4 which are enlarged views of portions A and B in FIG. 1, the base portion of the distribution pipe 28 is attached to the upper hole 8 as an extension of the heat transfer tube 7, Its tip is close to the lower surface of the current plate 21, and a space 29 is provided. The front end opening of the distribution pipe 28 faces a straightening plate hole 31 having an orifice portion 30 formed in the straightening plate 21. Two liquid holes 32 are formed near the upper surface of the upper tube plate 5 of the distribution pipe 28, as shown in FIG.
なお、41はドレイン抜き、42はそれぞれLA、LI、TA、
TI、PIA等検出部取付座である。41 is drain-free, 42 is LA, LI, TA,
It is a mounting seat for the detector such as TI and PIA.
前記のように構成された塩素化反応器を用いて、塩素
化反応を行うには、第６図に示すように原料液を原料導
入管16より下カバー13内に導入しポンプ44によって、反
応液導入管26により液貯留部に導入する。反応液は分配
管28の液孔32より伝熱管７の内面に沿って流下し、濡壁
を形成する。同時にCl2ガスをガス導入管27より導入す
る。Ci2ガスはオリフィス部によって均一に分布され、
流下する反応液と反応する。この際、流下する反応液は
薄膜で、かつ外側からブラインで冷却されているので、
効率よく冷却され、所望の温度に保持される。また塩素
化反応は、反応速度が早く各伝熱管７に導入された塩素
は、下カバー13に到達するまでに反応消失する。反応が
定常状態に達した後には、液貯留部22および下カバー13
内の液面43を一定に保持しながら、原料液を導入すると
もに、生成した塩素化物を抜き出す。In order to carry out the chlorination reaction using the chlorination reactor configured as described above, as shown in FIG. 6, the raw material liquid is introduced into the lower cover 13 through the raw material introduction pipe 16 and the reaction is performed by the pump 44. The liquid is introduced into the liquid reservoir by the liquid introducing pipe 26. The reaction liquid flows down from the liquid hole 32 of the distribution pipe 28 along the inner surface of the heat transfer tube 7 to form a wetting wall. At the same time, Cl 2 gas is introduced through the gas introduction pipe 27. Ci 2 gas is evenly distributed by the orifice,
Reacts with the reaction liquid flowing down. At this time, since the reaction liquid flowing down is a thin film and is cooled with brine from the outside,
It is efficiently cooled and maintained at the desired temperature. In the chlorination reaction, the reaction speed is high, and the chlorine introduced into each heat transfer tube 7 disappears by the time it reaches the lower cover 13. After the reaction reaches a steady state, the liquid reservoir 22 and the lower cover 13
While keeping the liquid level 43 in the inside constant, the raw material liquid is introduced and the generated chlorinated product is extracted.
この操作によって、多数本の伝熱管７を流下する液
は、温度の上昇が防止され、効率のよい塩素化反応が行
なわれる。塩素化反応によって生成したHClはガス導出
管14より抜出回収される。By this operation, the temperature of the liquid flowing down through the large number of heat transfer tubes 7 is prevented from rising, and an efficient chlorination reaction is performed. The HCl generated by the chlorination reaction is withdrawn and collected from the gas outlet pipe 14.
上記反応器は、原料液の導入量、塩素の導入量をコン
トロールすることによって、塩素化の進行は調整可能で
ある。In the above reactor, the progress of chlorination can be adjusted by controlling the introduction amount of the raw material liquid and the introduction amount of chlorine.
［発明の効果］ 以上説明したように、本発明の塩素化反応器は、小径
の伝熱管を多数本まとめた、多管式熱交換器状の濡壁を
用い、各管に均一に原料液を導入して液膜を流下させる
とともに、並流に塩素ガスを均一に導入して、反応させ
ることができるので、コンパクトで、濡壁を形成する面
積が大きく、発熱量の大きい塩素化反応を比較的低い温
度で効率よく行うことが可能となり、経済的利点が発揮
される。[Effects of the Invention] As described above, the chlorination reactor of the present invention uses a multi-tube heat exchanger-like wetting wall in which a large number of small-diameter heat transfer tubes are gathered, and the raw material liquid is uniformly applied to each tube. In addition to allowing the liquid film to flow down, chlorine gas can be uniformly introduced in a parallel flow to react, so that a chlorination reaction that is compact, has a large area for forming a wetting wall, and has a large calorific value can be performed. It becomes possible to carry out efficiently at a relatively low temperature, and an economic advantage is exhibited.
第１図および第２図は、本発明に係る塩素化反応器の一
実施例を示すもので、第１図は縦断面図、第２図は伝熱
管の配置を示す。第１図のII−II線矢視断面相当図、第
３図は第１図のＡ部分の拡大図、第４図は第１図のＢ部
分の拡大図、第５図は第３図の液孔の横断面図、第６図
は、第１図の反応器の使用状態の説明図である。 １……塩素化反応器、２……胴部、３……冷媒導入管、
４……冷媒導出管、５……上管板、６……下管板、７…
…伝熱管、８……上孔、９……下孔、10……邪魔板、11
……邪魔板ステー、12……支持脚、13……下カバー、14
……ガス導出管、15……液導出管、16……原料導入管、
21……整流板、22……液貯留部、23……ガス貯留部、24
……蓋部、25……上カバー、26……反応液導入管、27…
…ガス導入管、28……分配管、29……間隙、30……オリ
フィス部、31……整流板孔、32……液孔、41……ドレイ
ン抜き、42……各検出部の取付座、43……液面、44……
ポンプ。1 and 2 show one embodiment of the chlorination reactor according to the present invention. FIG. 1 shows a longitudinal sectional view and FIG. 2 shows an arrangement of heat transfer tubes. Fig. 1 is a sectional view taken along the line II-II of Fig. 1, Fig. 3 is an enlarged view of portion A in Fig. 1, Fig. 4 is an enlarged view of portion B in Fig. 1, and Fig. 5 is shown in Fig. 3. FIG. 6 is a cross-sectional view of the liquid hole, and FIG. 6 is an explanatory view of the usage state of the reactor of FIG. 1 ... Chlorination reactor, 2 ... Body, 3 ... Refrigerant introduction pipe,
4 ... Refrigerant outlet tube, 5 ... Upper tube plate, 6 ... Lower tube plate, 7 ...
… Heat transfer tube, 8 …… Upper hole, 9 …… Lower hole, 10 …… Baffle plate, 11
...... Baffle stays, 12 ...... Support legs, 13 ...... Lower cover, 14
…… Gas outlet pipe, 15 …… Liquid outlet pipe, 16 …… Raw material inlet pipe,
21 …… Rectifier plate, 22 …… Liquid storage part, 23 …… Gas storage part, 24
...... Lid part, 25 ...... Upper cover, 26 …… Reaction liquid inlet tube, 27 ・ ・ ・
… Gas inlet pipe, 28 …… Distribution pipe, 29 …… Gap, 30 …… Orifice part, 31 …… Rectifying plate hole, 32 …… Liquid hole, 41 …… Drain drain, 42 …… Mounting seat for each detector , 43 …… liquid level, 44 ……
pump.
Claims (1)
けられ、水平な上管板および下管板が取付けられ、これ
ら上管板および下管板の間には多数の垂直な伝熱管が取
付けられ、前記伝熱管を介して、前記上管板の上部およ
び下管板の下部が連通されている筒状の胴部と、 導出入管が取付けられている、前記胴部の下管板を覆う
下カバーと、 水平な整流板によって、液導入管を有する下部の液貯留
部、およびガス導入管を有する上部のガラス貯留部に２
分割され、上部が密閉されている前記上管板を覆う上カ
バーとを有し、前記上管板上面には、伝熱管の延長上に
それぞれ位置する分配管が取付けられ、これら分配管の
前記上管板の上面近傍には液孔が穿設され、前記分配管
の先端には、前記整流板に近接し、かつ整流板に穿設さ
れた、オリフィス部を有する整流板孔とそれぞれ対向し
ていることを特徴とする塩素化反応器。1. A refrigerant inlet pipe and a refrigerant outlet pipe are provided above and below the outer surface, horizontal upper tube plate and lower tube plate are mounted, and a large number of vertical heat transfer tubes are mounted between these upper tube plate and lower tube plate. And a tubular body portion in which an upper portion of the upper tube sheet and a lower portion of the lower tube sheet communicate with each other via the heat transfer tube, and a lower tube sheet of the body portion to which an inlet / outlet pipe is attached. The lower cover and the horizontal flow straightening plate allow the lower liquid storage part having the liquid introduction pipe and the upper glass storage part having the gas introduction pipe to be 2
It has an upper cover that is divided and covers the upper tube sheet whose upper part is sealed.On the upper surface of the upper tube sheet, distribution pipes that are respectively located on the extensions of the heat transfer tubes are attached. A liquid hole is formed in the vicinity of the upper surface of the upper tube plate, and a tip of the distribution pipe is close to the straightening plate and faces a straightening plate hole having an orifice portion formed in the straightening plate. A chlorination reactor characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2204548A JPH085821B2 (en) | 1990-08-01 | 1990-08-01 | Chlorination reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2204548A JPH085821B2 (en) | 1990-08-01 | 1990-08-01 | Chlorination reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0489440A JPH0489440A (en) | 1992-03-23 |
| JPH085821B2 true JPH085821B2 (en) | 1996-01-24 |
Family
ID=16492333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2204548A Expired - Lifetime JPH085821B2 (en) | 1990-08-01 | 1990-08-01 | Chlorination reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH085821B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2597827A1 (en) | 2003-11-20 | 2005-06-16 | Solvay (Societe Anonyme) | Process for producing an organic compound |
| EP1885672A2 (en) * | 2005-05-20 | 2008-02-13 | Solvay SA | Method for making a chlorohydrin by chlorinating a polyhydroxylated aliphatic hydrocarbon |
| WO2012041816A1 (en) | 2010-09-30 | 2012-04-05 | Solvay Sa | Derivative of epichlorohydrin of natural origin |
-
1990
- 1990-08-01 JP JP2204548A patent/JPH085821B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0489440A (en) | 1992-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9528772B2 (en) | Multi-passage thermal sheet and heat exchanger equipped therewith | |
| US4544544A (en) | Plate reactors for chemical syntheses under high pressure in gaseous phase and with heterogeneous catalysis | |
| US5443695A (en) | Distillation apparatus for concentrating less volatile liquids | |
| JPWO2011016443A1 (en) | Reactor | |
| US20100068128A1 (en) | Reactor, and method for the production of hydrogen sulfide | |
| US3932139A (en) | Reactor for the catalytic ammonia synthesis at high temperatures and pressures | |
| JPH085821B2 (en) | Chlorination reactor | |
| US6579438B1 (en) | Molten salt electrolytic cell having metal reservoir | |
| Ribeiro Jr et al. | Direct-contact evaporation in the homogeneous and heterogeneous bubbling regimes. Part I: experimental analysis | |
| US5387396A (en) | Reactor for carrying out exothermic reactions | |
| CN214183079U (en) | Stirring cooling kettle for chemical industry | |
| CN209828936U (en) | A reation kettle condenser for hydroxypropyl methyl cellulose production | |
| US3308606A (en) | Method of drying moisture bearing chlorine gas | |
| CN206751748U (en) | Radiation waste-heat boiler | |
| CN106621444B (en) | A kind of novel double down film melting crystallizer and the technique for carrying out substance separation | |
| CN109045743A (en) | The novel double down film melting crystallizer of one kind and its substance separating technology | |
| SU812335A1 (en) | Gas-lift apparatus | |
| CN220610344U (en) | Fixing device for cold tube in reaction kettle | |
| CN220918186U (en) | Combined graphite concentrating tower | |
| CN101732878A (en) | Evaporator for thermosensitive substances | |
| JPH0326910Y2 (en) | ||
| EP0553376B1 (en) | Process for producing 2,3-dichloro-1-propanol and reactor used therefor | |
| US3319400A (en) | Apparatus for liquid-to-liquid heat exchange | |
| CN218248590U (en) | Be used for chlorobenzene nitrile rectifying column cooling device | |
| CN213528673U (en) | Reaction device for synthesizing chloroethanol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080124 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090124 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100124 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100124 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110124 Year of fee payment: 15 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110124 Year of fee payment: 15 |