CN217164349U

CN217164349U - Polystyrene equipment for producing polystyrene with high light transmittance and high transparency

Info

Publication number: CN217164349U
Application number: CN202221078934.3U
Authority: CN
Inventors: 金丰富; 易健丰; 滕庆; 张国柱; 曹志仁; 杨蜀黔; 钟向宏
Original assignee: Lianyungang Petrochemical Co Ltd
Current assignee: Lianyungang Petrochemical Co Ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-08-12
Anticipated expiration: 2032-05-07

Abstract

The utility model discloses a production high light transmissivity, polystyrene equipment of high transparency polystyrene belongs to polystyrene production facility technical field, including holding vessel and styrene treater, the styrene holding vessel is linked together through pipeline and first delivery pump, first delivery pump is linked together through pipeline and styrene treater, styrene treater is linked together with the feeding pre-heater, the feeding pre-heater is linked together through pipeline and prepolymerization cauldron, the prepolymerization cauldron is linked together through pipeline and plug flow reactor group, install delivery pump two on the continuous pipeline, first devolatilization ware is linked together through pipeline and second devolatilization ware, install delivery pump three on the continuous pipeline, the second devolatilization ware is linked together through pipeline and eager grain unit, install delivery pump four on the continuous pipeline. The circulating liquid tank is communicated with the feeding preheater through a pipeline, and a conveying pump V is installed on the connected pipeline. Solves the technical problems of low light transmittance and low transparency of the polystyrene produced by the existing equipment, and is mainly applied to the production aspect of the polystyrene.

Description

Polystyrene equipment for producing polystyrene with high light transmittance and high transparency

Technical Field

The utility model belongs to the technical field of polystyrene production facility, concretely relates to polystyrene equipment of production high light transmissivity, high transparency polystyrene.

Background

The GPPS high-transparency product has wide application, is mainly used as a light guide plate and a diffusion plate in a high-end market at present, has limited production capacity in the industry, can be recognized by customers, has insufficient aging resistance, can be yellowed after being irradiated by lamplight for 1-2 years, and needs a set of equipment capable of producing high-transparency polystyrene to produce high-transparency polystyrene, so that the produced high-transparency polystyrene not only has high light transmittance, high transparency and oxidation resistance, but also can meet the requirements of social development.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model aims to provide a polystyrene equipment of production high light transmissivity, high transparency polystyrene, the high polystyrene material luminance of this device production is more than or equal to 96.3%, the luminousness is more than or equal to 90.7%, the utility model discloses the technical scheme who adopts as follows:

the utility model provides a production high light transmissivity, high transparency polystyrene equipment, includes holding vessel and styrene treater, the holding vessel be linked together through pipeline and delivery pump one, delivery pump one be linked together through pipeline and styrene treater, its characterized in that, the styrene treater is 2, is styrene treater one and styrene treater two respectively, styrene treater one and styrene treater two respectively through pipeline and feeding preheater be linked together, the styrene process that comes from the holding vessel is equipped with aluminium oxide's styrene treater, absorbs polymerization inhibitor TBC that contains in the styrene. The styrene processor is provided with 2 processors, 1 is opened for 1 in normal operation, and series-parallel switching adjustment can be carried out when internal fillers are replaced.

The first styrene processor and the second styrene processor are respectively communicated with a feeding preheater through pipelines, the preheater is communicated with a prepolymerization kettle through a pipeline, the prepolymerization kettle is communicated with a plug flow reactor group through a pipeline, and a delivery pump II is installed on the connected pipeline. Adding an auxiliary agent A, an auxiliary agent B, an auxiliary agent C and an auxiliary agent D into a prepolymerization reaction kettle for improving the anti-aging capability of a GPPS product, dissolving the auxiliary agent A, the auxiliary agent B, the auxiliary agent C and the auxiliary agent D in a preparation tank with stirring according to a specific proportion, and pumping the fully dissolved auxiliary agent A, the auxiliary agent B, the auxiliary agent C and the auxiliary agent D into the prepolymerization kettle according to a specific flow rate by a metering pump. Plug flow reactor group include four plug flow reactors, establish ties through the pipeline between each plug flow reactor, each plug flow reactor all installs the agitator, plug flow reactor group be linked together through pipeline and devolatilization pre-heater, the devolatilization pre-heater be linked together through pipeline and first devolatilization ware, first devolatilization ware be linked together through pipeline and second devolatilization ware, the continuous pipeline on install delivery pump three, the second devolatilization ware be linked together through pipeline and eager grain unit, the continuous pipeline on install delivery pump four. The utility model discloses a use specific initiating agent to reduce the production of oligomer, often contain dimer and trimer 0.2% ~ 1.5% in the polystyrene resin that obtains by the polymerization of thermal initiation, these harmful substance can influence GPPS's light transmissivity, transparency. Compared with thermal initiation, the initiator initiated for bulk polymerization of styrene greatly reduces the generation of dimer and trimer, thereby greatly improving the light transmission and transparency of GPPS finished products. The first devolatilization device and the second devolatilization device are communicated with a vacuum unit through pipelines, and the vacuum unit is communicated with a circulating liquid tank through a pipeline. The circulating liquid tank is communicated with the feeding preheater through a pipeline, and a conveying pump V is installed on the communicating pipeline.

The utility model has the advantages that:

the utility model has simple production flow and novel design, gets rid of the limitation of the traditional polymerization equipment on the production method of the high-transparency GPPS, not only saves the one-time investment of the production line construction, but also develops the potential of the existing device; the GPPS with high light transmittance and high transparency can be produced by the equipment of the utility model, the whole process is more convenient to operate, the application is wider, the practicability is strong, and the feasibility is higher; the process of transferring other GPPS brands to high-transparency GPPS is stable, the high-transparency GPPS is successfully produced after 6h, and less transition materials are produced by the system during the stage of transferring the brands; the device is utilized to produce GPPS with high light transmittance and high transparency, the brightness of which is more than or equal to 96.3 percent and the light transmittance of which is more than or equal to 90.7 percent; the high-transparency GPPS product produced by the method has excellent light stability, and can replace acrylic plates for use; the high-transparency GPPS meets the requirements of customers in the aspects of alignment, light transmission, residual quantity and the like.

Drawings

FIG. 1 is a schematic diagram of an apparatus for producing high transmittance, high transparency polystyrene according to the present invention;

fig. 2 is a working principle diagram of the device for producing polystyrene with high light transmittance and high transparency of the present invention.

Detailed Description

Example 1

As shown in fig. 1-2:

a device for producing high-light-transmittance and high-transparency polystyrene comprises a storage tank 1 and a styrene processor, wherein the storage tank 1 is communicated with a first delivery pump 16 through a pipeline, the first delivery pump 16 is communicated with the styrene processor through a pipeline, and the device is characterized in that the styrene processor is 2, namely a first styrene processor 2 and a second styrene processor 3, the first styrene processor 2 and the second styrene processor 3 are respectively communicated with a feeding preheater 4 through pipelines, the feeding preheater 4 is communicated with a prepolymerization reactor 5 through a pipeline, the prepolymerization reactor 5 is communicated with a plug flow reactor group through a pipeline, the connecting pipeline is provided with a second delivery pump 17, the plug flow reactor group comprises four plug flow reactors 6, and each plug flow reactor 6 is connected in series through a pipeline, each plug flow reactor 6 is provided with a stirrer 6-1, the plug flow reactor group is communicated with a devolatilization preheater 7 through a pipeline, the devolatilization preheater 7 is communicated with a first devolatilization device 8 through a pipeline, the first devolatilization device 8 is communicated with a second devolatilization device 9 through a pipeline, the connected pipeline is provided with a third delivery pump 22, the second devolatilization device 9 is communicated with a granulating unit through a pipeline, the connected pipeline is provided with a fourth delivery pump 23, the prepolymerization kettle 5 is communicated with a vacuum unit 10 through a pipeline, a first auxiliary feeding tank 12 is communicated with the prepolymerization kettle 5 through a pipeline, the communicated pipeline is provided with a sixth delivery pump 18, a second auxiliary feeding tank 13 is communicated with the prepolymerization kettle 5 through a pipeline, the communicated pipeline is provided with a seventh delivery pump 19, a third auxiliary feeding tank 14 is communicated with the prepolymerization kettle 5 through a pipeline, the communicating pipeline is provided with eight 20 delivery pumps, the four auxiliary agent feeding tanks 15 are communicated with the penultimate plug flow reactor 6 through pipelines, nine 21 delivery pumps are arranged on the communicating pipeline, the vacuum unit 10 is communicated with the circulating liquid tank 11 through a pipeline, the circulating liquid tank 11 is communicated with the feeding preheater 4 through a pipeline, and five 24 delivery pumps are arranged on the connected pipelines.

The working principle of the utility model is as follows:

TBC removal: styrene from a storage tank 1 passes through a styrene processor I2 and a styrene processor II 3 which are filled with aluminum oxide, absorbs TBC polymerization inhibitor contained in the styrene, the styrene processor is provided with 2 sets, and the operation is 1 division 1 at ordinary times. When the internal packing is replaced, series-parallel switching adjustment can be performed.

A prepolymerization unit: styrene from a storage tank 1 is subjected to polymerization inhibitor TBC removal by a styrene processor I2 and a styrene processor II 3 and then is merged with circulating liquid from a circulating liquid tank 11 to enter a styrene feeding preheater 4 for preheating, the material temperature is preheated to a set temperature and then enters a prepolymerization kettle 5 for prepolymerization, and meanwhile, a blue material, an initiator, white oil and other auxiliary agents required by the formula are also required to be added into the prepolymerization kettle 5. The temperature of the prepolymerization reactor 5 is controlled between 120 ℃ and 130 ℃ and the pressure is controlled at about 400mmHgA in the prepolymerization process, and the temperature of the prepolymerization reactor is controlled by adjusting the pressure of the prepolymerization reactor 5. Meanwhile, the prepolymerization reactor is controlled at a specific liquid level to control the retention time.

Polymerization unit: the styrene reaction materials after being prepolymerized in the prepolymerization reactor 5 are sequentially and respectively sent to the rear 4 series-connected vertical plug flow reactors through a second delivery pump 17, and the reaction temperature is controlled to be 130 ℃, 145 ℃, 155 ℃ and 165 ℃ in sequence. Each plug flow reactor 6 is provided with a stirring device 6-1 with matched power, so that the materials in the reactor are uniformly stirred and heat dissipation is facilitated. Each plug flow reactor is provided with a temperature control system.

A devolatilization unit: the melt from the polymerization reaction is sent to a devolatilization preheater 7 through a pipeline to heat the polymer from 165 ℃ to 225-240 ℃, the polymer is sent to a first devolatilization kettle 8 through a distributor, and most of the unreacted monomers, the diluent ethylbenzene and other low volatile matters are removed under high vacuum to obtain the GPPS polymer. The PS polymer devolatilized by the first devolatilizer 8 still contains 0.5 to 1 percent of residual monomers, and then is conveyed to the second devolatilizer 9 by a third conveying pump 22 through a distributor, and secondary devolatilization is carried out under the conditions of high temperature and high vacuum so as to reduce the residual styrene monomers in the PS melt to 300ppm or less.

A pelletizing unit: the polymer material in the second devolatilizer 9 is conveyed to a pelletizing unit for pelletizing by a conveying pump four 23. The high-transmittance polystyrene material produced by the device has the brightness of more than or equal to 96.3 percent and the light transmittance of more than or equal to 90.7 percent.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The equipment for producing the polystyrene with high light transmittance and high transparency comprises a storage tank (1) and a styrene processor, wherein the storage tank (1) is communicated with a first delivery pump (16) through a pipeline, and the first delivery pump (16) is communicated with the styrene processor through a pipeline, and is characterized in that the styrene processor comprises 2 styrene processors (2) and a second styrene processor (3), the first styrene processor (2) and the second styrene processor (3) are respectively communicated with a feeding preheater (4) through pipelines, the feeding preheater (4) is communicated with a prepolymerization kettle (5) through a pipeline, the prepolymerization kettle (5) is communicated with a plug flow reactor group through a pipeline, a second delivery pump (17) is installed on the connecting pipeline, the plug flow reactor group comprises four plug flow reactors (6), establish ties through the pipeline between each plug flow reactor (6), agitator (6-1) are all installed to each plug flow reactor (6), plug flow reactor group be linked together through pipeline and devolatilization pre-heater (7), devolatilization pre-heater (7) be linked together through pipeline and first devolatilization ware (8), first devolatilization ware (8) be linked together through pipeline and second devolatilization ware (9), continuous pipeline on install delivery pump three (22), second devolatilization ware (9) be linked together through pipeline and eager grain unit, install delivery pump four (23) on the continuous pipeline.

2. The apparatus for producing high light transmittance and high transparency polystyrene as claimed in claim 1, wherein the prepolymerization reactor (5) is connected to the vacuum unit (10) through a pipeline, the first additive feeding tank (12) is connected to the prepolymerization reactor (5) through a pipeline, the connecting pipeline is provided with a conveying pump six (18), the second additive feeding tank (13) is connected to the prepolymerization reactor (5) through a pipeline, the connecting pipeline is provided with a conveying pump seven (19), the third additive feeding tank (14) is connected to the prepolymerization reactor (5) through a pipeline, the connecting pipeline is provided with a conveying pump eight (20), the fourth additive feeding tank (15) is connected to the penultimate plug flow reactor (6) through a pipeline, and the connecting pipeline is provided with a conveying pump nine (21).

3. The apparatus for producing high transmittance and high transparency polystyrene as claimed in claim 2, wherein the vacuum unit (10) is connected to the circulating liquid tank (11) through a pipeline, the circulating liquid tank (11) is connected to the feed preheater (4) through a pipeline, and a fifth transfer pump (24) is installed on the connecting pipeline.