CN213726531U

CN213726531U - Low acid value triphenyl phosphite apparatus for producing

Info

Publication number: CN213726531U
Application number: CN202022460487.5U
Authority: CN
Inventors: 胡全胜; 余新伟; 胡伟炳
Original assignee: Changhe Chemical New Material Jiangsu Co ltd
Current assignee: Changhe Chemical New Material Jiangsu Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-07-20
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a low acid number triphenyl phosphite apparatus for producing, including reation kettle and dropwise add device, agitating unit and heating device, the dropwise add device includes unloading pipe, feeder hopper, mount, first solenoid valve, adds a section of thick bamboo, a scale section of thick bamboo and second solenoid valve, four supporting legs of reation kettle's bottom fixed connection, four supporting leg symmetric distribution are at reation kettle's bottom lateral wall, reation kettle's top fixed connection unloading pipe, the top fixed connection feeder hopper of unloading pipe. Through starting the servo motor, the servo motor drives the transmission rod to rotate, the transmission rod drives the two driven rods to rotate through the belt pulley and the transmission belt, the two driven rods and the transmission rod drive the stirring blades to rotate inside the inner container, so that the molten phenol is suitable for being stirred at the uniform speed inside the inner container, and the vacuum pump is started to work to vacuumize the inside of the inner container through the vacuum tube, so that the internal pressure of the reaction kettle is controlled to be 0.02 vacuum degree, the reaction is accelerated, and the reaction is more sufficient.

Description

Low acid value triphenyl phosphite apparatus for producing

Technical Field

The utility model relates to a production technology and a device, in particular to a low acid value triphenyl phosphite production device.

Background

Triphenyl phosphite, abbreviated as TPP, also known as triphenoxy phosphine, is a phosphite compound, and has a molecular formula: (C6H 5O) 3P, the molecular weight is 310.29, the triphenyl phosphite is colorless or yellowish oily liquid, is colorless or yellowish monoclinic crystal below 16 ℃, has slight phenol odor and pungent odor, is corrosive, is insoluble in water, can be dissolved in organic solvents such as ethanol, ether and chloroform, can be used as an antioxidant and a stabilizer of a plurality of polymers, has good synergistic effect with a plurality of phenolic antioxidants, and can also be used as an auxiliary antioxidant of polyvinyl chloride, polypropylene, polystyrene, ABS resin and the like. Triphenyl phosphite is an auxiliary antioxidant and has light stabilizing effect, is mainly suitable for an antioxidant stabilizer of polyvinyl chloride, polyethylene, polypropylene, polystyrene, polyester, ABS resin, epoxy resin, synthetic rubber and the like, is used as a chelating agent in polyvinyl chloride products, can reduce the harm of metal chloride by matching with the triphenyl phosphite when metal is used as a main stabilizer, keeps the transparency of the products and inhibits the color change, is also a good chemical intermediate, can play the antioxidation role of a flame retardant when used together with a halogen flame retardant, has light stabilizing performance, can be used for synthesizing alkyd resin and polyester, is mainly used as a raw material of resin, and can also be used for preparing trimethyl phosphite which is a pesticide intermediate, and triphenyl phosphite is a flame-retardant auxiliary plasticizer of cellulose resin, vinyl resin, natural rubber and synthetic rubber; the volatility is low, and the coating has excellent transparency, flexibility, toughness and certain flame retardance; is a plasticizing and physical plasticizer of nitrocellulose, cellulose acetate (film base), epoxy resin, synthetic plastics, polyvinyl chloride and butadiene acrylonitrile rubber; and non-flammable substitutes for camphor in viscose fibers; is suitable for films, organic glass, engineering plastics and the like.

A plurality of production processes of triphenyl phosphite with low acid value exist in the prior art, and the existing production processes do not have good production devices, are inconvenient to maintain the temperature of the production processes, and are inconvenient for adding additive solution, thereby influencing the production efficiency. Therefore, a low acid value triphenyl phosphite apparatus for producing is proposed to the above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

A production process of triphenyl phosphite with low acid value comprises a reaction kettle, a dripping device, a stirring device and a heating device;

(1) adding materials, namely firstly, externally connecting electrical components in the device with a control switch and a power supply, then adding the molten phenol into a reaction kettle under the switching action of a second electromagnetic valve through a feed hopper and a blanking pipe, then starting a servo motor, driving a transmission rod to rotate by the servo motor, driving two driven rods to rotate by a transmission rod through a belt pulley and a transmission belt, and driving stirring blades to rotate inside the inner container by the two driven rods and the transmission rod, so that the molten phenol is stirred at a constant speed inside the inner container;

(2) vacuum regulation, wherein the vacuum pump is started and works to vacuumize the inner container through the vacuum tube so as to keep the internal pressure of the reaction kettle at 0.02 vacuum degree,

(3) heating and adjusting, wherein the heating pipe inside the vacuum cavity is started to heat the inner part of the liner, the heating pipe and the vacuum cavity keep the inner part of the liner at a constant temperature, and the fused phenol inside the liner is kept at 30-35 ℃;

(4) adding liquid, namely adding a phosphorus trichloride solution to be added into an adding cylinder, working by a heating plate to keep the phosphorus trichloride solution at 30-35 ℃, allowing the phosphorus trichloride solution in the adding cylinder to enter the inside of a scale cylinder, observing the amount of the added phosphorus trichloride solution through the scale on the outer side of the scale cylinder, opening a first electromagnetic valve, dropwise adding the phosphorus trichloride solution at a constant speed, and controlling the dropwise adding time to be 1.5-2.0 h;

(5) and (3) continuously heating, continuously stirring and reacting for a period of time at the temperature of the step (4), adjusting the heating temperature of the heating pipe to the inner container to heat the inner container to 130-140 ℃, continuously performing enhanced reaction for 5-6 h, keeping the stirring blades continuously stirring, opening a third electromagnetic valve, enabling the solution in the inner container to enter a quantifying cylinder, discharging the reactant through a discharging pipe, removing HCI by using an external water ring pump, replacing the HCI by using N2, then removing unreacted phenol and HCl by reducing pressure, removing the removed HCl, enabling the removed HCl to enter a buffer tank through a condenser, and absorbing the HCl into hydrochloric acid through a falling film absorber, thereby preparing the triphenyl phosphite with the low acid value.

Furthermore, the dripping device comprises a discharging pipe, a feeding hopper, a fixing frame, a first electromagnetic valve, an adding cylinder, a scale cylinder and a second electromagnetic valve, wherein the bottom end of the reaction kettle is fixedly connected with four supporting legs, the four supporting legs are symmetrically distributed on the side wall of the bottom end of the reaction kettle, the top of the reaction kettle is fixedly connected with the discharging pipe, and the top of the discharging pipe is fixedly connected with the feeding hopper;

the stirring device comprises an inner container, a vacuum cavity, an installation box, a servo motor, a belt pulley, a bearing, a second electromagnetic valve, a transmission belt, a sealing box, a driven rod, a transmission rod, an electric cabinet and a stirring blade, wherein the inner container is fixedly connected inside the reaction kettle, the vacuum cavity is arranged between the inner container and the reaction kettle, and the side wall of the top end of the reaction kettle is fixedly connected with the installation box;

heating device includes hot plate, a quantitative section of thick bamboo, arranges material pipe, control panel, heating pipe, vacuum tube and vacuum pump, the top lateral wall fixed connection seal box of the inside of inner bag, the bottom intercommunication of inner bag has a quantitative section of thick bamboo, the electric cabinet is installed to reation kettle's one end lateral wall, control panel is installed to the one end lateral wall of electric cabinet.

Furthermore, the number of the discharging pipes is two, the two discharging pipes are symmetrically distributed on two sides of the top end of the reaction kettle, the bottom end of the discharging pipe is communicated with the top of the inner container, and a second electromagnetic valve is mounted inside the discharging pipe.

Furthermore, one end of the blanking pipe is communicated with one end of the scale drum, a first electromagnetic valve is installed inside the scale drum, and the top end of the scale drum is fixedly connected with the fixing frame.

Further, the inside fixed connection of mount adds a section of thick bamboo two add a section of thick bamboo symmetric distribution in the inside both sides of mount, two add a section of thick bamboo and communicate the one end of two scale section of thick bamboos respectively, the internally mounted of mount has the hot plate.

Further, the internally mounted of install bin has servo motor, servo motor's output cup joints the transfer line, the transfer line passes through the bearing and rotates the top of connecting at reation kettle, the transfer line runs through the seal box and extends to the inside of inner bag.

Furthermore, the inside of seal box rotates and connects two driven levers, the belt pulley has all been cup jointed to the outside of driven lever and transfer line, twine around the drive belt between the belt pulley of driven lever one end and the belt pulley of transfer line one end.

Furthermore, the transmission rod and the outer sides of the two driven rods are respectively sleeved with a stirring blade, and the transmission rod and the stirring blades sleeved with the two driven rods are respectively rotatably connected inside the inner container.

Furthermore, a heating pipe is installed inside the vacuum cavity, the heating pipe is wound on the outer side wall of the inner container, one end of the top of the inner container is communicated with one end of the vacuum pipe, the other end of the vacuum pipe is communicated with the vacuum pump, and the vacuum pump is installed on the outer side wall of one end of the reaction kettle.

Further, the bottom of the quantitative cylinder is communicated with one end of a discharge pipe, and a third electromagnetic valve is installed inside the discharge pipe.

The utility model has the advantages that: the utility model provides a make things convenient for temperature regulation and keep and be convenient for low acid value triphenyl phosphite apparatus for producing that the addition liquid added, improve production efficiency, the structure is reliable, has good application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic overall three-dimensional structure of an embodiment of the present invention;

fig. 2 is a schematic view of the overall internal structure of an embodiment of the present invention;

fig. 3 is a schematic position diagram of the seal box, the driven rod and the transmission rod according to an embodiment of the present invention.

In the figure: 1. the device comprises a reaction kettle, 2, supporting legs, 3, an inner container, 4, a vacuum cavity, 5, a blanking pipe, 6, a feeding hopper, 7, a fixing frame, 8, a heating plate, 9, a first electromagnetic valve, 10, an adding cylinder, 11, a scale cylinder, 12, an installation box, 13, a servo motor, 14, a belt pulley, 15, a bearing, 16, a second electromagnetic valve, 17, a transmission belt, 18, a sealing box, 19, a driven rod, 20, a transmission rod, 21, an electric cabinet, 22, a stirring blade, 23, a quantifying cylinder, 24, a discharging pipe, 25, a control panel, 26, a heating pipe, 27, a vacuum pipe, 28, a vacuum pump, 29 and a third electromagnetic valve.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1-3, a process for producing triphenyl phosphite with a low acid value comprises a reaction kettle 1, a dripping device, a stirring device and a heating device;

(1) adding materials, firstly, externally connecting electrical components in the device with a control switch and a power supply, then adding molten phenol into the reaction kettle 1 through a feed hopper 6 and a discharge pipe 5 under the switching action of a second electromagnetic valve 16, then starting a servo motor 13, driving a transmission rod 20 to rotate by the servo motor 13, driving two driven rods 19 to rotate by the transmission rod 20 through a belt pulley 14 and a transmission belt 17, and driving stirring blades 22 to rotate inside the inner container 3 by the two driven rods 19 and the transmission rod 20, so that the molten phenol is stirred at a constant speed inside the inner container 3;

(2) vacuum adjustment, wherein the vacuum pump 28 is started, the vacuum pump 28 works to vacuumize the inner container 3 through the vacuum tube 27, so that the internal pressure of the reaction kettle 1 is kept at 0.02 vacuum degree,

(3) heating adjustment is carried out, the heating pipe 26 inside the vacuum cavity 4 is started, the heating pipe 26 heats the inside of the inner container 3, the heating pipe 26 and the vacuum cavity 4 keep the constant temperature inside the inner container 3, and the fused phenol inside the inner container 3 is kept at 30-35 ℃;

(4) adding liquid, namely adding a phosphorus trichloride solution to be added into an adding cylinder 10, working by a heating plate 8 to keep the phosphorus trichloride solution at 30-35 ℃, allowing the phosphorus trichloride solution in the adding cylinder 10 to enter the scale cylinder 11, observing the amount of the added phosphorus trichloride solution through the scale on the outer side of the scale cylinder 11, opening a first electromagnetic valve 9, dropwise adding the phosphorus trichloride solution at a constant speed, and controlling the dropwise adding time to be 1.5-2.0 h;

(5) and (3) continuously heating and reacting, continuously stirring and reacting for a period of time at the temperature of the step (4), adjusting the heating temperature of the heating pipe (26) to the inner container (3) to heat the inner container (3) to 130-140 ℃, continuously strengthening the reaction for 5-6 h, keeping the stirring blades (22) continuously stirring, opening the third electromagnetic valve (29), allowing the solution in the inner container (3) to enter a quantitative cylinder (23), discharging the reactant through a discharging pipe (24), removing HCI (hydrogen chloride) by using an external water ring pump, replacing the HCI by using N2, removing unreacted phenol and HCl by reducing pressure, removing the removed HCl, allowing the HCl to enter a buffer tank through a condenser, and absorbing the HCl into a falling film absorber, thereby preparing the low-acid-value triphenyl phosphite.

The dripping device comprises a blanking pipe 5, a feeding hopper 6, a fixing frame 7, a first electromagnetic valve 9, an adding cylinder 10, a scale cylinder 11 and a second electromagnetic valve 16, wherein the bottom end of the reaction kettle 1 is fixedly connected with four supporting legs 2, the four supporting legs 2 are symmetrically distributed on the side wall of the bottom end of the reaction kettle 1, the top of the reaction kettle 1 is fixedly connected with the blanking pipe 5, and the top of the blanking pipe 5 is fixedly connected with the feeding hopper 6;

the stirring device comprises an inner container 3, a vacuum cavity 4, an installation box 12, a servo motor 13, a belt pulley 14, a bearing 15, a second electromagnetic valve 16, a transmission belt 17, a sealing box 18, a driven rod 19, a transmission rod 20, an electric cabinet 21 and a stirring blade 22, the inner container 3 is fixedly connected inside the reaction kettle 1, the vacuum cavity 4 is arranged between the inner container 3 and the reaction kettle 1, and the side wall of the top end of the reaction kettle 1 is fixedly connected with the installation box 12;

heating device includes hot plate 8, a quantitative section of thick bamboo 23, row's material pipe 24, control panel 25, heating pipe 26, vacuum tube 27 and vacuum pump 28, the top lateral wall fixed connection seal box 18 of the inside of inner bag 3, the bottom intercommunication of inner bag 3 has a quantitative section of thick bamboo 23, electric cabinet 21 is installed to reation kettle 1's one end lateral wall, control panel 25 is installed to the one end lateral wall of electric cabinet 21.

The number of the discharging pipes 5 is two, the two discharging pipes 5 are symmetrically distributed on two sides of the top end of the reaction kettle 1, the bottom end of each discharging pipe 5 is communicated with the top of the inner container 3, and a second electromagnetic valve 16 is installed inside each discharging pipe 5.

The one end of unloading pipe 5 communicates the one end of scale section of thick bamboo 11, the internally mounted of scale section of thick bamboo 11 has first solenoid valve 9, the top fixed connection mount 7 of scale section of thick bamboo 11, and the structure is more reasonable, the connection of being convenient for.

Two add a section of thick bamboo 10 of inside fixed connection of mount 7, two add a section of thick bamboo 10 symmetric distribution in the inside both sides of mount 7, two add a section of thick bamboo 10 and communicate the one end of two scale section of thick bamboos 11 respectively, the internally mounted of mount 7 has hot plate 8, and the structure is more reasonable, is convenient for connect.

The internally mounted of install bin 12 has servo motor 13, servo motor 13's output cup joints transfer line 20, transfer line 20 rotates through bearing 15 and connects at reation kettle 1's top, transfer line 20 runs through seal box 18 and extends to the inside of inner bag 3, and the structure is more reasonable, is convenient for connect.

Two driven levers 19 are connected in the inside rotation of seal box 18, belt pulley 14 has all been cup jointed in the outside of driven lever 19 and transfer line 20, drive belt 17 has been twined between belt pulley 14 of the belt pulley 14 of driven lever 19 one end and the belt pulley 14 of transfer line 20 one end, and the structure is more reasonable, is convenient for connect.

The stirring blades 22 are sleeved on the outer sides of the transmission rod 20 and the two driven rods 19, the stirring blades 22 sleeved on the transmission rod 20 and the two driven rods 19 are rotatably connected inside the inner container 3, the structure is more reasonable, and the connection is convenient.

The heating pipe 26 is arranged inside the vacuum cavity 4, the heating pipe 26 is wound on the outer side wall of the inner container 3, one end of the top of the inner container 3 is communicated with one end of the vacuum pipe 27, the other end of the vacuum pipe 27 is communicated with the vacuum pump 28, and the vacuum pump 28 is arranged on the outer side wall of one end of the reaction kettle 1, so that the structure is more reasonable, and the connection is convenient.

The bottom of the quantitative cylinder 23 is communicated with one end of a discharge pipe 24, and a third electromagnetic valve 29 is arranged in the discharge pipe 24.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a low acid value triphenyl phosphite apparatus for producing which characterized in that: the automatic feeding device comprises a dropping device, a reaction kettle (1), a stirring device and a heating device, wherein the dropping device comprises a discharging pipe (5), a feeding hopper (6), a fixing frame (7), a first electromagnetic valve (9), an adding cylinder (10), a scale cylinder (11) and a second electromagnetic valve (16), the bottom end of the reaction kettle (1) is fixedly connected with four supporting legs (2), the four supporting legs (2) are symmetrically distributed on the side wall of the bottom end of the reaction kettle (1), the top of the reaction kettle (1) is fixedly connected with the discharging pipe (5), and the top of the discharging pipe (5) is fixedly connected with the feeding hopper (6);

the stirring device comprises an inner container (3), a vacuum cavity (4), a mounting box (12), a servo motor (13), a belt pulley (14), a bearing (15), a second electromagnetic valve (16), a transmission belt (17), a sealing box (18), a driven rod (19), a transmission rod (20), an electric cabinet (21) and stirring blades (22), wherein the inner container (3) is fixedly connected inside the reaction kettle (1), the vacuum cavity (4) is arranged between the inner container (3) and the reaction kettle (1), and the side wall of the top end of the reaction kettle (1) is fixedly connected with the mounting box (12);

heating device includes hot plate (8), a quantitative section of thick bamboo (23), arranges material pipe (24), control panel (25), heating pipe (26), vacuum tube (27) and vacuum pump (28), the top lateral wall fixed connection seal box (18) of the inside of inner bag (3), the bottom intercommunication of inner bag (3) has a quantitative section of thick bamboo (23), electric cabinet (21) is installed to the one end lateral wall of reation kettle (1), control panel (25) are installed to the one end lateral wall of electric cabinet (21).

2. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: the number of the discharging pipes (5) is two, the two discharging pipes (5) are symmetrically distributed on two sides of the top end of the reaction kettle (1), the bottom end of each discharging pipe (5) is communicated with the top of the inner container (3), and a second electromagnetic valve (16) is installed inside each discharging pipe (5).

3. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: one end of the blanking pipe (5) is communicated with one end of a scale cylinder (11), a first electromagnetic valve (9) is installed inside the scale cylinder (11), and the top end of the scale cylinder (11) is fixedly connected with a fixing frame (7).

4. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: the inside fixed connection of mount (7) adds a section of thick bamboo (10), two add a section of thick bamboo (10) symmetric distribution in the inside both sides of mount (7), two add one end that a section of thick bamboo (10) communicate two scale section of thick bamboos (11) respectively, the internally mounted of mount (7) has hot plate (8).

5. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: the inside mounting of install bin (12) has servo motor (13), the output of servo motor (13) cup joints transfer line (20), transfer line (20) rotate through bearing (15) and connect at the top of reation kettle (1), transfer line (20) run through seal box (18) and extend to the inside of inner bag (3).

6. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: two driven levers (19) are connected in the inside rotation of seal box (18), belt pulley (14) have all been cup jointed in the outside of driven lever (19) and transfer line (20), drive belt (17) have been twined between belt pulley (14) of driven lever (19) one end and belt pulley (14) of transfer line (20) one end.

7. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: the stirring blades (22) are sleeved on the outer sides of the transmission rod (20) and the two driven rods (19), and the stirring blades (22) sleeved on the transmission rod (20) and the two driven rods (19) are rotatably connected inside the inner container (3).

8. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: the heating pipe (26) is installed inside the vacuum cavity (4), the heating pipe (26) is wound on the outer side wall of the inner container (3), one end of the top of the inner container (3) is communicated with one end of the vacuum pipe (27), the other end of the vacuum pipe (27) is communicated with the vacuum pump (28), and the vacuum pump (28) is installed on the outer side wall of one end of the reaction kettle (1).

9. The apparatus for producing triphenyl phosphite of low acid value according to claim 1, wherein: the bottom of the quantitative cylinder (23) is communicated with one end of a discharge pipe (24), and a third electromagnetic valve (29) is arranged in the discharge pipe (24).