阅读说明：本技术 一种双酚af的制备方法 (Preparation method of bisphenol AF ) 是由 何春雷 张辉 于 2021-09-01 设计创作，主要内容包括：本发明属于化合物制备技术领域,具体涉及一种双酚AF的制备方法,所述制备方法包括以下原料：苯酚晶体、六氟丙酮气体以及氟化氢气体；所述制备方法包括下述设备：高压反应釜；所述制备方法包括以下步骤：将苯酚晶体加入高压反应釜,六氟丙酮气体以及高压氟化氢气体通入高压反应釜中,使反应釜内部压力增加至0.8Mpa至1Mpa；高压反应釜加热至43℃,使苯酚晶体熔化形成液态苯酚；高压反应釜加热升温至100℃,通过液态苯酚与六氟丙酮气体在氟化氢气体作为催化剂,且高温高压的环境下反应制得双酚AF；本发明通过以苯酚晶体和六氟丙酮气体为反应原料,氟化氢气体为催化剂,在高温高压环境下反应制得双酚AF。(The invention belongs to the technical field of compound preparation, and particularly relates to a preparation method of bisphenol AF, which comprises the following raw materials: phenol crystals, hexafluoroacetone gas and hydrogen fluoride gas; the preparation method comprises the following equipment: a high-pressure reaction kettle; the preparation method comprises the following steps: adding phenol crystals into a high-pressure reaction kettle, introducing hexafluoroacetone gas and high-pressure hydrogen fluoride gas into the high-pressure reaction kettle, and increasing the internal pressure of the reaction kettle to 0.8Mpa to 1 Mpa; heating the high-pressure reaction kettle to 43 ℃ to melt the phenol crystals to form liquid phenol; heating the high-pressure reaction kettle to 100 ℃, and reacting liquid phenol and hexafluoroacetone gas in a high-temperature high-pressure environment to obtain bisphenol AF as a catalyst in the presence of hydrogen fluoride gas; the bisphenol AF is prepared by taking phenol crystals and hexafluoroacetone gas as reaction raw materials and hydrogen fluoride gas as a catalyst and reacting under a high-temperature and high-pressure environment.)

1. A method for preparing bisphenol AF is characterized in that: the preparation method comprises the following raw materials:

phenol crystals, hexafluoroacetone gas and hydrogen fluoride gas, wherein the phenol crystals and the hexafluoroacetone gas are used as reaction raw materials, and the hydrogen fluoride gas is used as a catalyst;

the preparation method comprises the following equipment:

a high-pressure reaction kettle;

the preparation method comprises the following steps:

the method comprises the following steps: adding phenol crystals into a high-pressure reaction kettle, introducing hexafluoroacetone gas and high-pressure hydrogen fluoride gas into the high-pressure reaction kettle, and increasing the internal pressure of the reaction kettle to 0.8Mpa to 1 Mpa;

step two: heating the high-pressure reaction kettle to 43 ℃ to melt the phenol crystals to form liquid phenol;

step three: heating the high-pressure reaction kettle to 100 ℃, and reacting liquid phenol and hexafluoroacetone gas in a high-temperature high-pressure environment by taking hydrogen fluoride gas as a catalyst to obtain the bisphenol AF.

2. The process for producing bisphenol AF of claim 1, which is characterized in that: in the first step, the phenol crystal and the hexafluoroacetone gas are prepared according to a molar ratio of 2: 1.

3. The process for producing bisphenol AF of claim 1, which is characterized in that: in the third step, the reaction time is 10 hours.

4. The process for producing bisphenol AF of claim 1, which is characterized in that: the high-pressure reaction kettle comprises a kettle body and a kettle cover, wherein the kettle body and the kettle cover are fixedly connected through bolts, an electric heating assembly is installed on the kettle body, the lower side inner wall of the kettle body is fixedly connected with the bottom of the kettle body, T-shaped ring grooves which are symmetrical up and down are formed in the lower side inner wall of the kettle body, a T-shaped ring platform is assembled in a rotating mode in the T-shaped ring grooves at the upper side, a rectangular ring platform is assembled in a rotating mode in the T-shaped ring grooves at the lower side, assembling ring grooves are connected between the T-shaped ring grooves at the upper side and the lower side, a plurality of rigid C-shaped guide pipes are communicated between the T-shaped ring platform and the rectangular ring platform, each rigid C-shaped guide pipe is arranged in the assembling ring grooves in a circumferential array mode, vent holes matched with the rigid C-shaped guide pipes are formed in the T-shaped ring platform, one-way valves matched with the rigid C-shaped guide pipes are installed on the rectangular ring platform, and each one-way valve is communicated with an outlet pipe, each the outlet duct all towards cauldron body bottom mid point level extends, each the venthole that a plurality of upper and lower run through is seted up to the outlet duct equidistance, the frame is installed at the kettle cover top, the frame mounting has the slide bar electric jar, the pressure disk is installed to the internal portion upper end of cauldron, the pressure disk with cauldron internal wall phase-match, the pressure disk rotates and is equipped with the crown plate, the output of slide bar electric jar runs through the kettle cover with crown plate fixed connection.

5. The process for producing bisphenol AF of claim 4, which is characterized in that: the electric heating assembly comprises an electric heater and a heating wire, the inner wall of the kettle body is further provided with an electric heating cavity, the heating wire is installed inside the electric heating cavity, and the electric heater is electrically connected with the heating wire.

6. The process for producing bisphenol AF of claim 4, which is characterized in that: the kettle body bottom center department fixedly connected with dead lever, the dead lever with fixedly connected with third connecting rod between the internal wall of cauldron body downside.

7. The process for producing bisphenol AF of claim 6, which is characterized in that: the kettle body bottom center department still processes there is the toper arch, the dead lever is fixed set up in the bellied top of toper.

8. The process for producing bisphenol AF of claim 4, which is characterized in that: cauldron body upside intercommunication has two mutual symmetrical intake pipes, cauldron body upside still intercommunication has the feeder hopper, two intake pipe and a feeder hopper all are provided with the valve, under the initial condition, the pressure disk is located the intake pipe upside.

9. The process for producing bisphenol AF of claim 4, which is characterized in that: still install temperature transmitter and pressure transmitter by the cauldron body, cauldron external wall welding has a plurality of supporting legss, each the common fixedly connected with base of supporting legs.

10. The process for producing bisphenol AF of claim 4, which is characterized in that: the welding of cauldron body inner wall has the spacing platform of annular, the spacing platform of annular is located the annular bench side of T.

Technical Field

The invention belongs to the technical field of compound preparation, and particularly relates to a preparation method of bisphenol AF.

Background

The bisphenol AF is also called hexafluoroisopropylidene diphenol, is white crystalline powder at room temperature, has the molecular weight of 336, the melting point of 160-161 ℃, the boiling point of 350-400 ℃, the flash point of 205 ℃, and can be decomposed and combusted when heated to 510 ℃. Is easily soluble in ethanol, diethyl ether, toluene, etc., slightly soluble in carbon tetrachloride, insoluble in water, and soluble in alkali water solution. Bisphenol AF is an important fluorine-containing fine chemical and fluorine-containing high-molecular cross-linking agent in the chemical field, and can be widely applied to medicines, pesticides, aviation, electronics, rubber, synthetic materials and the like.

With the widespread use of bisphenol AF in industrial and biological fields, the preparation process of bisphenol AF and related equipment are an important research topic, and therefore, we propose a preparation method of bisphenol AF.

Disclosure of Invention

The purpose of the invention is: the preparation method of the bisphenol AF aims to provide the preparation method of the bisphenol AF, wherein the bisphenol AF is prepared by taking phenol crystals and hexafluoroacetone gas as reaction raw materials and hydrogen fluoride gas as a catalyst through reaction under a high-temperature and high-pressure environment.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

a preparation method of bisphenol AF comprises the following raw materials:

phenol crystals, hexafluoroacetone gas and hydrogen fluoride gas, wherein the phenol crystals and the hexafluoroacetone gas are used as reaction raw materials, and the hydrogen fluoride gas is used as a catalyst;

the preparation method comprises the following equipment:

a high-pressure reaction kettle;

the preparation method comprises the following steps:

the method comprises the following steps: adding phenol crystals into a high-pressure reaction kettle, introducing hexafluoroacetone gas and high-pressure hydrogen fluoride gas into the high-pressure reaction kettle, and increasing the internal pressure of the reaction kettle to 0.8Mpa to 1 Mpa;

step two: heating the high-pressure reaction kettle to 43 ℃ to melt the phenol crystals to form liquid phenol;

step three: heating the high-pressure reaction kettle to 100 ℃, and reacting liquid phenol and hexafluoroacetone gas in a high-temperature high-pressure environment by taking hydrogen fluoride gas as a catalyst to obtain the bisphenol AF.

The bisphenol AF is prepared by taking phenol crystals and hexafluoroacetone gas as reaction raw materials and hydrogen fluoride gas as a catalyst and reacting under a high-temperature and high-pressure environment.

In the first step, the phenol crystal and the hexafluoroacetone gas are prepared according to a molar ratio of 2: 1.

In the third step, the reaction time is 5-7 hours.

The high-pressure reaction kettle comprises a kettle body and a kettle cover, wherein the kettle body and the kettle cover are fixedly connected through bolts, an electric heating assembly is installed on the kettle body, the lower side inner wall of the kettle body is fixedly connected with the bottom of the kettle body, T-shaped ring grooves which are symmetrical up and down are formed in the lower side inner wall of the kettle body, a T-shaped ring platform is assembled in a rotating mode in the T-shaped ring grooves at the upper side, a rectangular ring platform is assembled in a rotating mode in the T-shaped ring grooves at the lower side, assembling ring grooves are connected between the T-shaped ring grooves at the upper side and the lower side, a plurality of rigid C-shaped guide pipes are communicated between the T-shaped ring platform and the rectangular ring platform, each rigid C-shaped guide pipe is arranged in the assembling ring grooves in a circumferential array mode, vent holes matched with the rigid C-shaped guide pipes are formed in the T-shaped ring platform, one-way valves matched with the rigid C-shaped guide pipes are installed on the rectangular ring platform, and each one-way valve is communicated with an outlet pipe, each the outlet duct all towards cauldron body bottom mid point level extends, each the venthole that a plurality of upper and lower run through is seted up to the outlet duct equidistance, the frame is installed at the kettle cover top, the frame mounting has the slide bar electric jar, the pressure disk is installed to the internal portion upper end of cauldron, the pressure disk with cauldron internal wall phase-match, the pressure disk rotates and is equipped with the crown plate, the output of slide bar electric jar runs through the kettle cover with crown plate fixed connection.

Putting a proper amount of phenol crystals into a kettle body, introducing hexafluoroacetone gas into the kettle body, increasing the internal pressure of the reaction kettle to 0.8Mpa to 1Mpa by introducing high-pressure hydrogen fluoride gas, heating the interior of the kettle body to 43 ℃ by an electric heating assembly, melting the phenol crystals into liquid phenol, simultaneously ensuring that the liquid level of the liquid phenol is not higher than the bottom of a T-shaped ring groove at the upper side, preventing the liquid phenol from entering a rigid C-shaped guide pipe through a vent hole of a T-shaped ring platform, continuously heating the interior of the kettle body to 100 ℃ by the electric heating assembly for reaction, in the reaction process, controlling the output end of a slide bar electric cylinder of a rack to extend out and retract in a reciprocating manner, and pushing a sliding plate to move downwards when the output end of the slide bar electric cylinder extends out, so as to press a pressure plate to compress the space in the kettle body, increase the air pressure in the kettle body, and installing a check valve on a rectangular ring platform, therefore, the liquid phenol can not enter the rigid C-shaped guide pipe from the one-way valve, so that the gas in the kettle body is forced to enter the rigid C-shaped guide pipe through the vent hole of the T-shaped ring platform on the upper side and is sent to the one-way valve of the rectangular ring platform on the lower side, and then the gas is led into the lower side of the kettle body through the gas outlet holes of the gas outlet pipes, so that the gas can react from the inside of the liquid phenol, and the reaction between the liquid phenol, the hexafluoroacetone gas and the hydrogen fluoride gas is quicker and more efficient; when the output of slide bar electric jar was received in, the initial position was got back to the pressure disk, through the reciprocal holding down of pressure disk and reset, can be with the gaseous inside leading-in toward liquid phenol of relapseing of internal portion of cauldron to improve reaction efficiency, practice thrift the time of preparation, in addition, people can also adjust the reciprocal distance that stretches out and income of output of slide bar electric jar according to actual need.

The automatic stirring device is characterized in that the frame is further provided with a motor, an output shaft of the motor is fixedly connected with a polygonal rotating shaft, the pressure plate is provided with a polygonal hole matched with the polygonal rotating shaft, the polygonal rotating shaft penetrates through the kettle cover and the pressure plate and the bottom of the pressure plate and is parallel and level with the T-shaped ring platform in sequence, the polygonal rotating shaft is fixedly connected with a plurality of first connecting rods between the T-shaped ring platform, and each first connecting rod is fixedly connected with a plurality of first stirring rods extending downwards.

Through setting up the motor, when the motor starts, because the output shaft of motor can drive the polygon pivot and rotate, thereby make the pressure disk rotate, because the output of slide bar electric jar is fixed mutually with the crown plate of pressure disk, and simultaneously, the crown plate rotates with the pressure disk to be connected, therefore, can not appear interfering between slide bar electric jar and motor, when the polygon pivot rotates, can make each first connecting rod rotate, thereby drive T shape ring platform, C shape rigidity pipe and rectangle ring platform rotate, thereby make each outlet duct that is linked together with the rectangle ring platform can rotate, make gaseous more even dispersion and liquid phenol in, make the reaction more abundant and even, and, when first stirring rod rotates, can also stir the liquid phenol on upper portion, can further make the reaction abundant and even.

The equal fixedly connected with a plurality of second connecting rods of rectangle ring platform, each the equal fixedly connected with of second connecting rod a plurality of to the second that the cauldron body bottom extends stirs the pole.

The second connecting rod can be driven to rotate when the rectangular ring platform rotates, so that the liquid phenol at the lower part can be stirred by each second stirring rod, and the reaction can be further fully and uniformly carried out.

The electric heating assembly comprises an electric heater and a heating wire, the inner wall of the kettle body is further provided with an electric heating cavity, the heating wire is installed inside the electric heating cavity, and the electric heater is electrically connected with the heating wire.

The electric heater is electrified to heat the kettle body by the electric heating wire in the electric heating cavity, and the kettle is simple in structure and convenient to assemble and process.

The kettle body bottom center department fixedly connected with dead lever, the dead lever with fixedly connected with third connecting rod between the internal wall of cauldron body downside.

Through dead lever and third connecting rod, can make between cauldron body downside inner wall and the cauldron body bottom connection structure simple, the processing of being convenient for.

The kettle body bottom center department still processes there is the toper arch, the dead lever is fixed set up in the bellied top of toper.

Such structure, be convenient for after the reaction, the bisphenol AF that the cooling was appeared can slide to cauldron body avris along the toper arch, convenient unified collection.

Cauldron body upside intercommunication has two mutual symmetrical intake pipes, cauldron body upside still intercommunication has the feeder hopper, two intake pipe and a feeder hopper all are provided with the valve, under the initial condition, the pressure disk is located the intake pipe upside.

Two intake pipes are used for letting in hexafluoroacetone gas and high pressure hydrogen fluoride gas respectively, and the feeder hopper is used for under the initial condition, and the pressure disk is located the intake pipe upside to the gas flow that can avoid letting in reaches the pressure disk top.

Still install temperature transmitter and pressure transmitter by the cauldron body, cauldron external wall welding has a plurality of supporting legss, each the common fixedly connected with base of supporting legs.

The supporting kettle body that supporting legs and base can stabilize sets up temperature transmitter and pressure transmitter, makes the internal temperature and the pressure of the real-time control cauldron of people ability.

The welding of cauldron body inner wall has the spacing platform of annular, the spacing platform of annular is located the annular bench side of T.

The position that the distance exceeds T shape ring platform can be avoided pushing down by setting up the spacing slip table of annular.

Drawings

The invention is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic view of a process for preparing bisphenol AF according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a process for producing bisphenol AF according to the present invention;

FIG. 3 is a schematic cross-sectional view of a kettle according to an embodiment of the process for preparing bisphenol AF of the present invention;

FIG. 4 is a schematic cross-sectional view of a kettle cover according to an embodiment of the process for preparing bisphenol AF of the present invention;

FIG. 5 is a schematic sectional view of an assembled kettle body and kettle cover according to an embodiment of the method for preparing bisphenol AF of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5;

the main element symbols are as follows:

the device comprises a kettle body 1, a T-shaped ring groove 11, a T-shaped ring platform 111, a vent hole 1111, a rectangular ring platform 112, a one-way valve 1121, a gas outlet pipe 1122, a gas outlet hole 1123, an assembly ring groove 12, a rigid C-shaped guide pipe 121, a pressure plate 13, a ring plate 131, an electric heating cavity 14, a fixed rod 15, a third connecting rod 151, a conical protrusion 16, a gas inlet pipe 17, a valve 171, a feed hopper 18, a temperature transmitter 191, a pressure transmitter 192, a kettle cover 2, a frame 21, a sliding rod electric cylinder 211, a motor 22, a polygonal rotating shaft 221, a first connecting rod 222, a first stirring rod 223, a second connecting rod 224, a second stirring rod 225, an electric heater 31, an electric heating wire 32, supporting legs 41, a base 42 and an annular limiting platform 51.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in figure 1, the preparation method of bisphenol AF comprises the following raw materials:

phenol crystals, hexafluoroacetone gas and hydrogen fluoride gas, wherein the phenol crystals and the hexafluoroacetone gas are used as reaction raw materials, and the hydrogen fluoride gas is used as a catalyst;

the preparation method comprises the following equipment:

a high-pressure reaction kettle;

the preparation method comprises the following steps:

the method comprises the following steps: adding phenol crystals into a high-pressure reaction kettle, introducing hexafluoroacetone gas and high-pressure hydrogen fluoride gas into the high-pressure reaction kettle, and increasing the internal pressure of the reaction kettle to 0.8Mpa to 1 Mpa;

step two: heating the high-pressure reaction kettle to 43 ℃ to melt the phenol crystals to form liquid phenol;

step three: heating the high-pressure reaction kettle to 100 ℃, and reacting liquid phenol and hexafluoroacetone gas in a high-temperature high-pressure environment by taking hydrogen fluoride gas as a catalyst to obtain the bisphenol AF.

In the first step, the phenol crystal and the hexafluoroacetone gas are prepared according to the molar ratio of 2: 1.

Wherein, in the third step, the reaction time is 5 to 7 hours.

The bisphenol AF is prepared by taking phenol crystals and hexafluoroacetone gas as reaction raw materials and hydrogen fluoride gas as a catalyst and reacting under a high-temperature and high-pressure environment.

Referring to fig. 2 to 6, the high pressure reaction kettle comprises a kettle body 1 and a kettle cover 2, the kettle body 1 and the kettle cover 2 are fixedly connected through bolts, the kettle body 1 is provided with an electric heating assembly, the lower inner wall of the kettle body 1 is fixedly connected with the bottom of the kettle body 1, the lower inner wall of the kettle body 1 is provided with T-shaped ring grooves 11 which are symmetrical up and down, the upper T-shaped ring groove 11 is rotatably provided with a T-shaped ring platform 111, the lower T-shaped ring groove 11 is rotatably provided with a rectangular ring platform 112, an assembly ring groove 12 is connected between the T-shaped ring grooves 11 at the upper and lower sides, a plurality of rigid C-shaped guide tubes 121 are communicated between the T-shaped ring platform 111 and the rectangular ring platform 112, each rigid C-shaped guide tube 121 is arranged inside the assembly ring groove 12 in a circumferential array manner, the T-shaped ring platform 111 is provided with vent holes 1111 which are matched with the rigid C-shaped guide tubes 121, the rectangular ring platform 112 is provided with one-way valves 1121 which are matched with the rigid C-shaped guide tubes 121, and each one-way valve is communicated with an air outlet tube 1122, each outlet duct 1122 all extends towards cauldron body 1 bottom midpoint level, and a plurality of ventholes 1123 that run through from top to bottom are seted up to each outlet duct 1122 equidistance, and frame 21 is installed at 2 tops of kettle cover, and slide bar electric jar 211 is installed to frame 21, and pressure disk 13 is installed to the inside upper end of cauldron body 1, and pressure disk 13 and 1 inner wall phase-match of cauldron body, pressure disk 13 rotate to be equipped with crown plate 131, and the output of slide bar electric jar 211 runs through cauldron cover 2 and crown plate 131 fixed connection.

Putting a proper amount of phenol crystals into a kettle body 1, introducing hexafluoroacetone gas into the kettle body 1, increasing the internal pressure of the reaction kettle to 0.8Mpa to 1Mpa by introducing high-pressure hydrogen fluoride gas, heating the interior of the kettle body 1 to 43 ℃ by an electric heating assembly, melting the phenol crystals into liquid phenol, simultaneously ensuring that the liquid level of the liquid phenol is not higher than the bottom of a T-shaped ring groove 11 on the upper side, preventing the liquid phenol from entering a rigid C-shaped conduit 121 through a vent hole 1111 of a T-shaped ring platform 111, then continuously heating by the electric heating assembly, heating the interior of the kettle body 1 to 100 ℃ for reaction, in the reaction process, controlling the output end of a slide rod electric cylinder 211 of a rack 21 to stretch out and take in a reciprocating manner, pushing a sliding plate 131 to move downwards when the output end of the slide rod electric cylinder 211 stretches out, thereby pressing a pressure plate 13 downwards, compressing the space inside the kettle body 1, and increasing the air pressure inside the kettle body 1, because the check valve 1121 is installed on the rectangular ring platform 112, the liquid phenol cannot enter the rigid C-shaped conduit 121 from the check valve 1121, so that the gas in the kettle body 1 is forced to enter the rigid C-shaped conduit 121 through the vent hole 1111 of the upper T-shaped ring platform 111 and is sent to the check valve 1121 of the lower rectangular ring platform 112, and then the gas is introduced to the lower side of the kettle body 1 through the gas outlet holes 1123 of the gas outlet pipes 1122, so that the gas can react from the inside of the liquid phenol, and the reaction between the liquid phenol, the hexafluoroacetone gas and the hydrogen fluoride gas is more rapid and efficient; when the output of slide bar electric jar 211 was received, initial position was got back to pressure disk 13, through the reciprocal holding down of pressure disk 13 and reset, can be with the gaseous inside leading-in toward liquid phenol of 1 inside of cauldron body to improve reaction efficiency, practice thrift the time of preparation, in addition, people can also be according to actual need, adjust the reciprocal distance that stretches out and receive of the output of slide bar electric jar 211.

Motor 22 is still installed to frame 21, motor 22's output shaft fixedly connected with polygon pivot 221, pressure disk 13 set up with polygon pivot 221 assorted polygon hole, polygon pivot 221 runs through kettle cover 2 and pressure disk 13 and bottom and T ring platform 111 looks parallel and level in proper order downwards, a plurality of first connecting rods 222 of fixedly connected with between polygon pivot 221 and the T ring platform 111, the equal fixedly connected with of each first connecting rod 222 stirs the pole 223 that a plurality of downwardly extending, the equal fixedly connected with of rectangular ring platform 112 a plurality of second connecting rods 224, the equal fixedly connected with of each second connecting rod 224 stirs the pole 225 that a plurality of second that extend to kettle 1 bottom.

By arranging the motor 22, when the motor 22 is started, because the output shaft of the motor 22 drives the polygonal rotating shaft 221 to rotate, the pressure plate 13 rotates, because the output end of the sliding rod electric cylinder 211 is fixed with the ring plate 131 of the pressure plate 13, and meanwhile, the ring plate 131 is rotatably connected with the pressure plate 131, interference between the sliding rod electric cylinder 211 and the motor 22 does not occur, when the polygonal rotating shaft 221 rotates, each first connecting rod 222 can rotate, so as to drive the T-shaped ring platform 111, the C-shaped rigid conduit 121 and the rectangular ring platform 112 to rotate, so as to enable each air outlet pipe 1122 communicated with the rectangular ring platform 112 to rotate, so as to enable air to be more uniformly dispersed in liquid phenol, so as to enable the reaction to be more sufficient and uniform, and when the first stirring rod 223 rotates, the upper liquid phenol can be stirred, when the rectangular ring platform 112 rotates, the second connecting rod 224 can be driven to rotate, so as to enable each second stirring rod 225 to stir the lower liquid phenol, the reaction can be further made sufficient and uniform.

The electric heating assembly comprises an electric heater 31 and an electric heating wire 32, the inner wall of the kettle body 1 is further provided with an electric heating cavity 14, the electric heating wire 32 is arranged inside the electric heating cavity 14, and the electric heater 31 is electrically connected with the electric heating wire 32.

The electric heater 31 is electrified to enable the heating wire 32 in the electric heating cavity 14 to heat the kettle body 1, and the kettle is simple in structure and convenient to assemble and process.

The fixed rod 15 is fixedly connected to the center of the bottom of the kettle body 1, the third connecting rod 151 is fixedly connected between the fixed rod 15 and the inner wall of the lower side of the kettle body 1, the conical protrusion 16 is further processed at the center of the bottom of the kettle body 1, and the fixed rod 15 is fixedly arranged at the top of the conical protrusion 16.

Through the fixing rod 15 and the third connecting rod 151, the connecting structure between the inner wall of the lower side of the kettle body 1 and the bottom of the kettle body 1 is simple, and the processing is convenient; meanwhile, after the reaction is finished, the cooled and precipitated bisphenol AF can slide to the side of the kettle body 1 along the conical protrusion 16, and the collection is convenient and uniform.

The 1 upside intercommunication of the cauldron body has two mutual symmetry intake pipes 17, and 1 upside of the cauldron body still communicates there is feeder hopper 18, and two intake pipes 17 and a feeder hopper 18 all are provided with valve 171, and under the initial condition, pressure disk 13 is located the intake pipe 17 upside.

Two intake pipes 17 are used for letting in hexafluoroacetone gas and high pressure hydrogen fluoride gas respectively, and feeder hopper 18 is used for under the initial condition, and pressure disk 13 is located the intake pipe 17 upside to can avoid the gaseous pressure disk 13 top that flows that lets in.

Still install temperature transmitter 191 and pressure transmitter 192 in the cauldron body 1, the welding of cauldron body 1 outer wall has a plurality of supporting legs 41, the common fixedly connected with base 42 of each supporting leg.

The supporting kettle body 1 with the supporting legs 41 and the base 42 capable of being stabilized is provided with the temperature transmitter 191 and the pressure transmitter 192, so that people can monitor the temperature and the pressure inside the kettle body in real time.

An annular limiting table 51 is welded on the inner wall of the kettle body 1, and the annular limiting table 51 is positioned above the T-shaped annular table 111.

The provision of the annular limit slide table 51 can prevent the platen 13 from being depressed beyond the position of the T-shaped ring table 111.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.