CN215538628U

CN215538628U - Demulsification device for ASA resin production

Info

Publication number: CN215538628U
Application number: CN202121238063.2U
Authority: CN
Inventors: 张振东; 马超
Original assignee: Shandong Yuanbang New Material Co ltd
Current assignee: Shandong Yuanbang New Material Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-01-18
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a demulsification device for ASA resin production, which belongs to the technical field of ASA resin production devices and comprises a demulsification kettle, a first filter tank, a flocculation kettle and a second filter tank which are sequentially connected, wherein a first filter membrane layer is arranged inside the first filter tank, a second filter membrane layer is arranged inside the second filter tank, an emulsion pipeline, a distilled water dilution pipeline and a demulsification solution pipeline are arranged at the top of the demulsification kettle, a flocculation solution pipeline is arranged at the top of the flocculation kettle, the demulsification kettle and the flocculation kettle both comprise a kettle body, a stirring device is arranged inside the kettle body, and a heating jacket is arranged on the outer wall of the kettle body. Through carrying out the flocculation process again after the breakdown of emulsion, twice breakdown of emulsion has been carried out in other words, and the breakdown of emulsion all adopts the mode that physics and chemistry combined together with flocculation process for the polymer emulsion breakdown of emulsion is thorough, and in addition, adopts the earlier filterable mode after the breakdown of emulsion, compares in the mode of the direct washing after the breakdown of emulsion, can improve the efficiency of washing, also saves water, reduce cost.

Description

Demulsification device for ASA resin production

Technical Field

The utility model relates to the technical field of ASA resin production devices, in particular to a demulsification device for ASA resin production.

Background

ASA resins are graft copolymers composed of acrylates, styrene and acrylonitrile. ASA resins have many excellent properties such as high impact resistance, good heat resistance, high mechanical strength, chemical resistance, and electrical insulation, and also have excellent colorability. With the development of society, the demand of people for high-performance products is gradually enlarged, and the demand of people for ASA is also increased. ASA is now increasingly used in the field of outdoor and building materials to replace ABS and in the manufacturing industry with other resin alloys. The most basic polymerization process adopted for producing the ASA graft copolymer at present is an emulsion polymerization system, and after polymerization, a series of post-treatment processes such as emulsion breaking, water washing, filtering, drying and the like need to be carried out on a polymer emulsion to finally obtain the ASA core-shell graft polymer powder. The existing demulsification process usually adopts a single demulsification mode, so that the problem of incomplete demulsification and waste is caused, and meanwhile, the process of directly washing after demulsification not only wastes water, but also has the problem of low efficiency.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems, the utility model provides the demulsification device for producing the ASA resin, which is characterized in that a primary flocculation process is carried out after demulsification is carried out, namely, two times of demulsification are carried out, and the demulsification and flocculation processes adopt a mode of combining physics and chemistry, so that the polymer emulsion is thoroughly demulsified.

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

a demulsification device for ASA resin production comprises a demulsification kettle, a first filter tank, a flocculation kettle and a second filter tank which are sequentially connected, wherein the bottom of the demulsification kettle is connected to the top of the first filter tank through a pipeline, the bottom of the first filter tank is connected to the top of the flocculation kettle through a pipeline, the bottom of the flocculation kettle is connected to the top of the second filter tank, a first filter membrane layer is arranged inside the first filter tank, a second filter membrane layer is arranged inside the second filter tank, an emulsion pipeline, a distilled water dilution pipeline and a demulsification solution pipeline are arranged at the top of the demulsification kettle, the flocculation kettle and the flocculation kettle both comprise a kettle body, a stirring device is arranged inside the kettle body, a heating jacket is arranged on the outer wall of the kettle body, and the lower end of the heating jacket is connected with a heating medium inlet pipeline, the higher end of the heating jacket is connected with a heating medium discharge pipeline.

Preferably, the two ends of the first filtering membrane layer and the second filtering membrane layer are respectively embedded on the inner walls of the first filtering tank and the second filtering tank, and the first filtering membrane layer and the second filtering membrane layer are obliquely arranged.

Preferably, a plurality of uniformly arranged spoilers are arranged on the inner wall of the kettle body.

Preferably, the spoiler is obliquely and upwards arranged along one end far away from the inner wall of the kettle body.

Preferably, the distilled water dilution pipeline, the demulsifying solution pipeline and the flocculating solution pipeline are respectively provided with a flow meter.

The beneficial effects of the utility model are as follows:

1. the utility model carries out a flocculation procedure again after carrying out emulsion breaking, which is equivalent to carrying out two times of emulsion breaking, so that the emulsion breaking is more thorough;

2. the demulsification and flocculation processes adopt a physical and chemical combined mode, and the physical modes of stirring and heating are combined with a chemical mode of adding a demulsifier or a flocculant, so that the polymer emulsion is thoroughly demulsified;

3. after the demulsification is finished, filtering is carried out firstly, the filtered water solution also contains residual oil drops, flocculation is continuously carried out to recover the oil drops, and then secondary filtering is carried out, compared with a mode of directly washing after the demulsification, the mode of filtering firstly after the demulsification can improve the washing efficiency, saves water and reduces the cost;

4. the stirring effect can be further improved by arranging the spoilers in the demulsification kettle and the flocculation kettle, the full mixing with the demulsifier or the flocculating agent is facilitated, and the demulsification effect is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a demulsification device for producing ASA resin.

In the figure: the device comprises a demulsification kettle 1, a flocculation kettle 2, a first filter tank 3, a second filter tank 4, a first filter membrane layer 5, a second filter membrane layer 6, an emulsion pipeline 7, a distilled water dilution pipeline 8, a demulsification solution pipeline 9, a flocculation solution pipeline 10, a stirring device 11, a heating jacket 12, a turbulence sheet 13 and a flowmeter 14.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

The demulsification device for ASA resin production as shown in figure 1 comprises a demulsification kettle 1, a first filter tank 3, a flocculation kettle 2 and a second filter tank 4 which are connected in sequence, wherein the bottom of the demulsification kettle 1 is connected with the top of the first filter tank 3 through a pipeline, the bottom of the first filter tank 3 is connected with the top of the flocculation kettle 2 through a pipeline, the bottom of the flocculation kettle 2 is connected with the top of the second filter tank 4, a first filter membrane layer 5 is arranged inside the first filter tank 3, a second filter membrane layer 6 is arranged inside the second filter tank 4, an emulsion pipeline 7, a distilled water dilution pipeline 8 and a demulsification solution pipeline 9 are arranged at the top of the demulsification kettle 1, a flocculation solution pipeline 10 is arranged at the top of the flocculation kettle 2, the demulsification kettle 1 and the flocculation kettle 2 both comprise a kettle body, a stirring device 11 is arranged inside the kettle body, and a heating jacket 12 is arranged on the outer wall of the kettle body, the lower end of the heating jacket 12 is connected with a heating medium inlet pipeline, and the upper end of the heating jacket 12 is connected with a heating medium outlet pipeline.

The two ends of the first filtering membrane layer 5 and the second filtering membrane layer 6 are respectively embedded on the inner walls of the first filtering tank 3 and the second filtering tank 4, and the first filtering membrane layer 5 and the second filtering membrane layer 6 are all obliquely arranged. And a plurality of uniformly arranged spoilers 13 are arranged on the inner wall of the kettle body. The spoiler 13 is obliquely and upwards arranged along one end far away from the inner wall of the kettle body. And flow meters 14 are arranged on the distilled water dilution pipeline 8, the demulsifying solution pipeline 9 and the flocculating solution pipeline 10.

Firstly, adding a polymer emulsion obtained by polymerization into a demulsification kettle 1 through an emulsion pipeline 7, adding distilled water into the demulsification kettle 1 for dilution, starting stirring and heating, adding a prepared demulsifier solution, demulsifying to obtain aggregated large droplets, layering and separating out, then filtering through a first filtering tank 3, continuously feeding the filtered water solution containing residual polymer into a flocculation kettle 2 for second coagulation, starting stirring and heating in the flocculation kettle 2, adding a prepared flocculant solution, flocculating to obtain aggregated products, layering and separating out, then filtering through a second filtering tank 4, further recycling the filtered solution, and performing the next washing process on the polymer products obtained through the first filtering tank 3 and the second filtering tank 4. The stirring effect can be further improved by arranging the spoilers 13 in the demulsification kettle 1 and the flocculation kettle 2, and the demulsification kettle is favorable for fully mixing with a demulsifier or a flocculating agent, so that the demulsification effect is further improved. The flow meter 14 is provided to facilitate control of the amount of distilled water, emulsion breaker solution and flocculant solution added.

The foregoing is merely exemplary and illustrative of the present invention, and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. The demulsification device for ASA resin production is characterized by comprising a demulsification kettle, a first filter tank, a flocculation kettle and a second filter tank which are sequentially connected, wherein the bottom of the demulsification kettle is connected with the top of the first filter tank through a pipeline, the bottom of the first filter tank is connected with the top of the flocculation kettle through a pipeline, the bottom of the flocculation kettle is connected with the top of the second filter tank, a first filter membrane layer is arranged inside the first filter tank, a second filter membrane layer is arranged inside the second filter tank, an emulsion pipeline, a distilled water dilution pipeline and a demulsification solution pipeline are arranged at the top of the demulsification kettle, a flocculation solution pipeline is arranged at the top of the flocculation kettle, the demulsification kettle and the flocculation kettle both comprise a kettle body, a stirring device is arranged inside the kettle body, a heating jacket is arranged on the outer wall of the kettle body, and the lower end of the heating jacket is connected with a heating medium inlet pipeline, the higher end of the heating jacket is connected with a heating medium discharge pipeline.

2. The demulsification device as claimed in claim 1, wherein both ends of the first and second filter membrane layers are embedded in the inner walls of the first and second filter tanks, respectively, and the first and second filter membrane layers are inclined.

3. The demulsification device for producing ASA resin as claimed in claim 1, wherein a plurality of uniformly arranged spoilers are arranged on the inner wall of the kettle body.

4. The demulsification device as claimed in claim 1, wherein the spoiler is arranged obliquely upwards along one end far away from the inner wall of the kettle body.

5. The demulsification device as claimed in claim 1, wherein flow meters are arranged on the distilled water dilution pipeline, the demulsifying solution pipeline and the flocculating solution pipeline.