JPH0454143A - Production of bisphenol a - Google Patents

Production of bisphenol a

Info

Publication number
JPH0454143A
JPH0454143A JP2159625A JP15962590A JPH0454143A JP H0454143 A JPH0454143 A JP H0454143A JP 2159625 A JP2159625 A JP 2159625A JP 15962590 A JP15962590 A JP 15962590A JP H0454143 A JPH0454143 A JP H0454143A
Authority
JP
Japan
Prior art keywords
reactor
reaction
distributor
bisphenol
secondary reactor
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
Application number
JP2159625A
Other languages
Japanese (ja)
Other versions
JP2504857B2 (en
Inventor
Shigeru Iimuro
飯室　茂
Susumu Takase
晋 高瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP2159625A priority Critical patent/JP2504857B2/en
Publication of JPH0454143A publication Critical patent/JPH0454143A/en
Application granted granted Critical
Publication of JP2504857B2 publication Critical patent/JP2504857B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、２．２−ビス（４−ヒドロキシフェニル）プ
ロパン（以下、ビスフェノールＡと称する）の製造方法
に関する。更に詳しくは、フェノールとアセトンを塩酸
触媒の存在下に反応させてビスフェノールＡを製造する
方法において、連続的に運転されている一次反応機から
回分的に運転されている二次反応機への液の供給を、反
応機間の配管に反応液を実質的に滞留させることなく行
うことを特徴とするビスフェノールへの製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing 2,2-bis(4-hydroxyphenyl)propane (hereinafter referred to as bisphenol A). More specifically, in a method for producing bisphenol A by reacting phenol and acetone in the presence of a hydrochloric acid catalyst, liquid is transferred from a continuously operated primary reactor to a batchwise operated secondary reactor. The present invention relates to a method for producing bisphenol, characterized in that the supply of the reaction solution is carried out without substantially retaining the reaction liquid in the piping between the reactors.

〔従来の技術〕[Conventional technology]

ビスフェノールＡは酸性触媒存在下に、成る場合にはイ
オウ化合物のような助触媒を加えて、アセトンと過剰の
フェノールから製造される。Bisphenol A is prepared from acetone and excess phenol in the presence of an acidic catalyst, optionally with the addition of a cocatalyst such as a sulfur compound.

この縮合反応の触媒としては塩酸又は強酸性イオン交換
樹脂が知られている。塩酸を使用し、た場合には低温で
操作することにより、ビスフェノールＡとフェノールの
付加物を晶出させなから反応させるため、反応を進めな
から主要副生成物であるｏ、　ｐ’一体をｐ、ｐ一体で
あるビスフェノールＡに異性化することにより減らすこ
とかできる。　しかし、反応を連続的に行う場合には、
付加物結晶を含むスラリーの移送のために、フェノール
をより過剰に使用する必要からｏ、　ｐ’一体の増加か
避けられず、一方、回分式で反応を行う場合には、アセ
トンの初期濃度か高い為にもう一つの主要副原料である
シアニン化合物か増加してしまうという欠点かあった。Hydrochloric acid or a strongly acidic ion exchange resin is known as a catalyst for this condensation reaction. By using hydrochloric acid and operating at low temperature in some cases, the adducts of bisphenol A and phenol are reacted without crystallization. It can be reduced by isomerizing to bisphenol A, which is a combination of p and p. However, when the reaction is carried out continuously,
An increase in o and p' is unavoidable due to the need to use phenol in excess for the transfer of the slurry containing adduct crystals, whereas when the reaction is carried out batchwise, the initial concentration of acetone Due to its high price, it had the disadvantage of increasing the content of cyanine compounds, which is another major auxiliary raw material.

これらを補う方法として、特開平１−１８０８４３号公
報には、原料として使用するアセトンの２０乃至６０％
までを連続的に操作される反応機内で反応させ、この未
反応アセトンを含む反応混合物を塩酸触媒の存在下にさ
らに回分式反応機で反応させた後に、反応生成物を精製
工程で処理することを特徴とするビスフェノールＡの製
造方法か提案されている。As a method of supplementing these, JP-A-1-180843 discloses that 20 to 60% of the acetone used as a raw material is
to react in a continuously operated reactor, and the reaction mixture containing unreacted acetone is further reacted in a batch reactor in the presence of a hydrochloric acid catalyst, and then the reaction product is treated in a purification step. A method for producing bisphenol A characterized by the following has been proposed.

この改良された方法においても、最初の段階の反応を行
う一次反応機から、次の段階を行う二次反応機へ反応液
を装入する際に、反応液を移送する配管系に滞留部が出
来てしまうと、配管内でビスフェノールＡへの反応が更
に進行して、ビスフェノールＡとフェノールとの結晶を
含むスラリーを形成したり、配管内壁から結晶が成長し
たりして、ついには配管閉塞等の事故か発生し、プロセ
スの正常な運転か不可能となってしまう。Even in this improved method, when charging the reaction liquid from the primary reactor for the first stage reaction to the secondary reactor for the next stage, a stagnation part is created in the piping system that transfers the reaction liquid. Once formed, the reaction to bisphenol A further progresses within the pipe, forming a slurry containing crystals of bisphenol A and phenol, and crystals grow from the inner wall of the pipe, eventually leading to pipe blockage, etc. Accidents may occur, making normal operation of the process impossible.

〔発明が解決しようとする課題〕 本発明は、このような問題を解決する方法を提供するも
のである。[Problems to be Solved by the Invention] The present invention provides a method for solving such problems.

すなわち、本発明の課題はフェノールとアセトンを塩酸
触媒の存在下に反応させてヒスフェノールＡを製造する
プロセスにおいて、−次反応機から二次反応機への反応
液の装入方法を提供することである。That is, an object of the present invention is to provide a method for charging a reaction liquid from a secondary reactor to a secondary reactor in a process for producing hisphenol A by reacting phenol and acetone in the presence of a hydrochloric acid catalyst. It is.

〔課題を解決するための手段〕[Means to solve the problem]

本発明者らは、上記目的を達成するために鋭意検討し遂
に本発明に到った。In order to achieve the above object, the present inventors conducted extensive studies and finally arrived at the present invention.

すなわち、本発明は、フェノールとアセトンを塩酸触媒
の存在下に反応させてヒスエノール八を製造する方法に
おいて、連続的に運転されている一次反応機から回分的
に運転されている二次反応機への液の供給を、これらの
反応機間の配管に反応液を実質的に滞留させることなく
行うことを特徴とするヒスフェノールへの製造方法であ
る。That is, the present invention provides a method for producing hisenol 8 by reacting phenol and acetone in the presence of a hydrochloric acid catalyst, from a continuously operated primary reactor to a batchwise operated secondary reactor. This is a method for producing hisphenol, which is characterized in that the liquid is supplied without substantially retaining the reaction liquid in the piping between these reactors.

この方法では、−次反応機に塩酸および／または塩化水
素を流入させながら、フェノールおよびアセトンを連続
的に装入して反応させる。通常、アセトンの転化率か２
０〜６０９６の状態の反応液を、−機以上の二次反応機
に送り、必要に応じてフェノールまたはアセトン、およ
び触媒を各反応機に送入させて反応を進めている。In this method, phenol and acetone are continuously charged and reacted while flowing hydrochloric acid and/or hydrogen chloride into the second reactor. Usually, the conversion rate of acetone is 2
The reaction solution in a state of 0 to 6096 is sent to secondary reactors of -1 or higher, and phenol or acetone and a catalyst are fed to each reactor as needed to proceed with the reaction.

このような反応において、通常−次反応機から二次反応
機への反応液の移送は、配管を通して複数個の二次反応
機に移送される。In such a reaction, the reaction solution is usually transferred from a secondary reactor to a plurality of secondary reactors through piping.

すなわち、反応液の移送か一次反応機と二次反応機とを
結ぶ配管を通して行われる場合、この配管内に反応液の
滞留部か生じると、ここで反応か進行し配管閉塞等の事
故を起ニす。In other words, when the reaction liquid is transferred through piping that connects the primary reactor and the secondary reactor, if a stagnation part of the reaction liquid occurs in this piping, the reaction will proceed there and cause an accident such as piping blockage. Nis.

本発明は、このような事故の発生を未然に防ぐような反
応液の分配装置であり、−次反応機から二次反応機へ反
応液を装入する方法である。The present invention is a reaction liquid distribution device that prevents the occurrence of such accidents, and a method for charging the reaction liquid from the secondary reactor to the secondary reactor.

本発明の方法で使用する、−次反応機と複数の二次反応
機との間に介在させる反応液を実質的に滞留させること
のない分配器は、プロセスの安全上の設計を勘案して、
−次反応機にてきる限り最短の位置に設置された複数の
反応機との間に設け、分配器から複数の二次反応機への
各配管の長さかほぼ等しい配管で結ばれるのか好ましい
。The distributor used in the method of the present invention, which is interposed between the secondary reactor and the plurality of secondary reactors and which does not substantially allow the reaction liquid to stagnate, is designed in consideration of the safety design of the process. ,
- It is preferable that the distributor be installed between a plurality of reactors installed at the shortest possible position to the secondary reactor, and connected by pipes having substantially equal lengths from the distributor to the plurality of secondary reactors.

また、−次反応機から分配器への配管は、分配器の頭頂
部へ、また分配器から二次反応機への配管は分配槽の底
に近い位置から各二次反応機種へ反応液の自重で流入す
るように各二次反応機へ結ばれるのが好ましい。In addition, the piping from the secondary reactor to the distributor goes to the top of the distributor, and the piping from the distributor to the secondary reactor connects the reaction liquid from a position near the bottom of the distribution tank to each secondary reaction model. Preferably, it is connected to each secondary reactor so that it flows under its own weight.

各配管の途中には設計上可能な限り、分配器に近い位置
に開閉弁を設ける。Install an on-off valve in the middle of each pipe as close to the distributor as possible based on the design.

これらにより一次反応機から二次反応機への反応液の移
送は実質的に滞留かなく円滑に流れる状態て行うことか
てきるのて、配管内で反応か進行して生じる生成物が、
配管を閉塞するのを防止できる。Because of these, the reaction liquid can be transferred from the primary reactor to the secondary reactor in a state where it flows smoothly without substantial stagnation, so that the products produced by the reaction proceeding in the piping are
It can prevent clogging of pipes.

〔実施例〕 本発明を更に詳し〈実施例により説明する。〔Example〕 The present invention will be explained in more detail with reference to Examples.

実施例 図面に示す分配器を用いて実施した。Example The experiment was carried out using the distributor shown in the drawing.

図１に示す分配器は、−次反応機からの反応液を移送す
る配管■か分配器の頭頂に結ばれ、分配器から各二次反
応機への配管■は分配器の周囲に設置された各二次反応
機と放射状に結はれ、かつ、二次反応機方向に低くなる
ように斜めに取りつけられ、さらに、分配器の側壁の上
端に、−次反応機と連結しているオーバフロー管を設け
てなるものである。また、この間の弁■は出来る限り分
配器に近く設けられ、配管内に反応液の滞留部かできる
のを極力少なくするように設計されたものである。The distributor shown in Figure 1 is connected to the top of the distributor by the piping (■) that transfers the reaction liquid from the secondary reactor, and the piping (■) from the distributor to each secondary reactor is installed around the distributor. The overflow is connected radially to each of the secondary reactors and is installed diagonally so as to be lower in the direction of the secondary reactor, and is further connected to the secondary reactor at the upper end of the side wall of the distributor. It is made up of a pipe. In addition, the valve (2) in between is installed as close to the distributor as possible, and is designed to minimize the formation of a stagnation part of the reaction liquid in the piping.

この分配器を使用する本発明のビスフェノールへの製造
は、−次反応機にフェノール、アセトンを装入し塩化水
素を吹き込みなから反応接円に塩化水素を満たして反応
させ、アセトンの転化率か２０〜６０％に達した反応液
を分配器を通して各二次反応機に連続的に供給した。In the production of bisphenol according to the present invention using this distributor, phenol and acetone are charged into the reactor, hydrogen chloride is blown in, and then the reaction circle is filled with hydrogen chloride to cause the reaction, and the conversion rate of acetone is increased. The reaction solution reaching 20 to 60% was continuously supplied to each secondary reactor through a distributor.

必要に応してアセトン、フェノールを装入し、塩化水素
を各二次反応機に流通させて二次反応機での反応を行っ
た。反応液からは、この後、常用の方法でビスフェノー
ルＡを得た。Acetone and phenol were charged as necessary, and hydrogen chloride was passed through each secondary reactor to carry out a reaction in each secondary reactor. Thereafter, bisphenol A was obtained from the reaction solution by a conventional method.

−次反応機から二次反応機への反応液の供給に際して、
分配器をオーバフローする反応液はオーバーフローライ
ンを通して一次反応機に連続的に戻された。また、二〇
オーバーフロー管は分配器から二次反応機への配管のい
ずれかか万一閉塞した場合に反応液を一次反応機に戻し
て、配管閉塞によるトラブルを防止する効果を補うこと
かできる。- When supplying the reaction liquid from the next reactor to the second reactor,
The reaction liquid overflowing the distributor was continuously returned to the primary reactor through the overflow line. In addition, the 20 overflow pipe can be used to return the reaction liquid to the primary reactor in the event that any of the pipes from the distributor to the secondary reactor is blocked, thereby supplementing the effect of preventing troubles caused by pipe blockage. .

本発明の方法により反応液装入部における滞留部分か実
質的になくなり高濃度ビスフェノールＡによる配管閉塞
等のトラブルは全く無くなった。By the method of the present invention, there is virtually no stagnation in the reaction liquid charging section, and troubles such as pipe clogging due to high concentration bisphenol A are completely eliminated.

〔発明の効果〕〔Effect of the invention〕

本発明の方法により、−次反応機からの反応液は、二次
反応機への装入部分における滞留部分か実質的になくな
り、ビスフェノールＡによる配管閉塞等のトラブルは全
くなくなり、生産性の向上に大いに寄与した。By the method of the present invention, the reaction liquid from the secondary reactor is substantially eliminated from the stagnation in the charging section to the secondary reactor, and troubles such as piping clogging due to bisphenol A are completely eliminated, improving productivity. contributed greatly to.

【図面の簡単な説明】[Brief explanation of drawings]

図面の第１図は、本発明の方法で使用する分配器の一例
を示した。 図中、各記号は次を示す。 ■・−次反応機から分配器への反応液供給ライン、 ■：分配器、 ■ニオバフローライン、 ■：分配器から二次反応器への反応液供給ライン 第２図は、上記の分配器で一次反応機と二次反応機を連
結した部分の工程図を示すものである。 図中、各記号は次を示す。 ０ニ一次反応機 ＠：ポンブ ＠：液分配器 ＠二二次反応機FIG. 1 of the drawings shows an example of a distributor for use in the method of the invention. In the figure, each symbol indicates the following. ■・-Reaction liquid supply line from the secondary reactor to the distributor, ■: Distributor, ■Nioba flow line, ■: Reaction liquid supply line from the distributor to the secondary reactor. This figure shows a process diagram of a portion in which a primary reactor and a secondary reactor are connected by a vessel. In the figure, each symbol indicates the following. 0 Ni primary reactor @: Pump @: Liquid distributor @ 2 Secondary reactor

Claims (1)

【特許請求の範囲】[Claims] １）フェノールとアセトンを塩酸触媒の存在下に反応さ
せてビスェノールＡを製造する方法において、連続的に
運転されている一次反応機から回分的に運転されている
二次反応機への液の供給を、これらの反応機間の配管に
反応液を実質的に滞留させることなく行うことを特徴と
するビスフェノールＡの製造方法1) In a method for producing bisenol A by reacting phenol and acetone in the presence of a hydrochloric acid catalyst, supplying a liquid from a continuously operated primary reactor to a batchwise operated secondary reactor. A method for producing bisphenol A, which is carried out without substantially retaining the reaction liquid in the piping between these reactors.
JP2159625A 1990-06-20 1990-06-20 Method for producing bisphenol A Expired - Fee Related JP2504857B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2159625A JP2504857B2 (en) 1990-06-20 1990-06-20 Method for producing bisphenol A

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2159625A JP2504857B2 (en) 1990-06-20 1990-06-20 Method for producing bisphenol A

Publications (2)

Publication Number Publication Date
JPH0454143A true JPH0454143A (en) 1992-02-21
JP2504857B2 JP2504857B2 (en) 1996-06-05

Family

ID=15697812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2159625A Expired - Fee Related JP2504857B2 (en) 1990-06-20 1990-06-20 Method for producing bisphenol A

Country Status (1)

Country Link
JP (1) JP2504857B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003511429A (en) * 1999-10-12 2003-03-25 ゼネラル・エレクトリック・カンパニイ Bisphenol prereactor cleaning method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01180843A (en) * 1988-01-08 1989-07-18 Mitsui Toatsu Chem Inc Production of bisphenol a

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01180843A (en) * 1988-01-08 1989-07-18 Mitsui Toatsu Chem Inc Production of bisphenol a

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003511429A (en) * 1999-10-12 2003-03-25 ゼネラル・エレクトリック・カンパニイ Bisphenol prereactor cleaning method

Also Published As

Publication number Publication date
JP2504857B2 (en) 1996-06-05

Similar Documents

Publication Publication Date Title
KR101279372B1 (en) Method for producing 1,2-dichloroethane by means of direct chlorination
JP5393483B2 (en) Method and apparatus for continuously producing hydrogen sulfide
US6368568B1 (en) Method for improving the efficiency of a silicon purification process
US4918245A (en) Process for preparing bisphenol A
US5439663A (en) Method for producing Caro's acid
US6013845A (en) Fixed bed reactor packing
JPH0454143A (en) Production of bisphenol a
US6262315B1 (en) Process and apparatus for producing dihydric phenolic compound
US2965455A (en) Apparatus for producing hydrogen sulfide
KR910003819B1 (en) Preparation method of bisphenol A
CN221981619U (en) Mixed dinitrobenzene two-stage nitration waste acid extraction device
US5470564A (en) Method for producing caro's acid
CN221108268U (en) Condensation reactor for octanol production
JPS60118231A (en) Method of carrying out chemical processes in packed shell-and-tube reactors
US6368570B1 (en) Process for manufacturing Caro's acid
CN115350651A (en) A kind of bisphenol A reactor that can replace catalyst without shutting down and using method thereof
JP5249495B2 (en) A fixed bed reactor and a process for producing 2,2-bis (4-hydroxyphenyl) propane using the same.
EP0377521B1 (en) High yield sodium hydrosulfite generation
US2552260A (en) Apparatus for the manufacture of
CN207929218U (en) CH based on minute bubbles reaction kettle3Cl synthesizers
US6011184A (en) Descaling of bisphenol-A reactor using water
CN115518589B (en) Bisphenol A reactor capable of reducing heat load and avoiding blocking of catalyst bed
CN214051584U (en) Diazonium salt hydrolysis reaction system
US4101581A (en) Preparation of azines by a cascade system
US2750419A (en) Production of oxygen-containing organic compounds

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080402

Year of fee payment: 12

R154 Certificate of patent or utility model (reissue)

Free format text: JAPANESE INTERMEDIATE CODE: R154

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090402

Year of fee payment: 13

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100402

Year of fee payment: 14

LAPS Cancellation because of no payment of annual fees