Polyethylene wax separation device

Abstract

The utility model belongs to the technical field of chemical separation equipment, and particularly relates to a polyethylene wax separation device which comprises a heating tank, a vacuum pump and a condensation tank which are sequentially connected, the heating tank and the condensation tank are both of a sealed tank body structure, and the vacuum pump is respectively connected with the top of the heating tank and the top of the condensation tank through pipelines. The polyethylene wax separating device disclosed by the utility model is relatively simple in composition, the whole device is sealed, the polyethylene wax can be quickly separated in a micro-negative pressure environment by adopting the vacuum pump, and the requirements of separating the polyethylene wax in small places such as laboratories and the like and subsequently quickly analyzing the content or components of the polyethylene wax can be met.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical separation equipment, specifically relating to a separation device for polyethylene wax. Background Technology

[0002] Polyethylene wax is a byproduct of high-density polyethylene (HDPE) polymerization. It is an amorphous polymer with extremely short molecular chains and is mostly soluble in the dispersion medium hexane. Polyethylene wax typically has a molecular weight below 10,000. Due to its low molecular weight and small particle size, it is difficult to separate by centrifugation, resulting in a significant amount of polyethylene wax in hexane. This substance must be separated from hexane by methods such as distillation; otherwise, it will affect the properties of the hexane dispersion medium, which is particularly crucial for the stable operation of the extruder.

[0003] Currently, industrial polyethylene wax separation devices typically consist of distillation towers, flash tanks, and purification tanks. These devices occupy a large space and have low separation efficiency, making them unsuitable for the separation and measurement of polyethylene wax in small locations such as laboratories. Utility Model Content

[0004] The purpose of this invention is to provide a polyethylene wax separation device with a simple structure that can meet the needs of polyethylene wax separation and measurement in small places such as laboratories.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] An embodiment of this utility model provides a polyethylene wax separation device, comprising a heating tank, a vacuum pump, and a condensing tank connected in sequence. The heating tank and the condensing tank are both sealed tank structures, and the vacuum pump is connected to the top of the heating tank and the condensing tank respectively through pipelines.

[0007] As a further technical solution, the heating tank includes a heating tank sealing cover, a heating tube, and a heating controller; the heating tank sealing cover is located on the top of the heating tank, and the heating tank sealing cover is provided with an openable sample dispensing port; the bottom and side walls of the heating tank are provided with heating tubes, and the heating tubes are connected to the heating controller.

[0008] As a further technical solution, the heating tank is provided with an inner sleeve, which can be removed from the heating tank.

[0009] As a further technical solution, the condenser includes a condenser sealing cover, a condenser pipe, and a condenser controller; the condenser sealing cover is located on the top of the condenser, and the condenser pipe is provided on the bottom and side wall of the condenser, and the condenser pipe is connected to the condenser controller.

[0010] As a further technical solution, the top of the condenser is also provided with an vent pipe, which is connected to a collection device, and the collection device centrally processes the uncondensed gas in the vent pipe.

[0011] As a further technical solution, the condenser is provided with an inner sleeve, which can be removed from the inside of the condenser.

[0012] As a further technical solution, the working pressure of the vacuum pump is controlled within the range of -1.5kPa to -2.5kPa.

[0013] As a further technical solution, the heating tank is also equipped with a stirrer, and the outer wall of the heating tank is also equipped with heat insulation cotton.

[0014] As a further technical solution, a filter screen is provided at the inlet of the vacuum pump pipeline.

[0015] As a further technical solution, a gas-liquid separator is provided in the vent pipe.

[0016] The beneficial effects of the above-described embodiments of this utility model are as follows:

[0017] (1) The polyethylene wax separation device in this utility model has a relatively simple composition and can quickly separate polyethylene wax, which can meet the needs of small places such as laboratories for the separation of polyethylene wax and subsequent rapid analysis of the content or composition of polyethylene wax.

[0018] (2) The polyethylene wax separation device in this utility model is a fully sealed device to prevent the hexane gas after precipitation from accumulating in the air and causing safety accidents such as fire or explosion.

[0019] (3) In this utility model, a vacuum pump is used to separate polyethylene wax under a slight negative pressure environment, which is beneficial to the complete removal of hexane in the heating tank. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of the polyethylene wax separation device in this utility model;

[0022] The diagram is for illustrative purposes only.

[0023] The components include: heating tank 1, heating tank sealing cover 2, heating tube 3, vacuum pump 4, heating controller 5, sample to be tested 6, condenser 7, condenser sealing cover 8, condenser tube 9, vent pipe 10, condenser controller 11, and hexane 12. Detailed Implementation

[0024] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] The components of each device used in this utility model are all commercially available products in the field.

[0026] Example 1

[0027] In a typical embodiment of this utility model, such as Figure 1 As shown, a separation device for polyethylene wax is provided, comprising a heating tank 1, a vacuum pump 4, and a condenser 7 connected in sequence. The heating tank 1 is a tank structure with a sealing cap 2 at its top. The sealing cap 2 has an openable sample inlet. Heating tubes 3 are provided on the bottom and side walls of the heating tank 1. The heating tubes 3 are used to heat the sample 6 to be tested in the heating tank 1, causing the hexane in the sample 6 to evaporate. The heating tubes 3 are connected to a heating controller 5, which controls the heating temperature of the heating tubes 3. A stirrer is also provided inside the heating tank 1, and the outer wall of the heating tank is also lined with insulating cotton, thereby improving the evaporation efficiency of the hexane in the sample 6 to be tested in the heating tank 1.

[0028] The heating tank sealing cover 2 is equipped with a pipeline connected to the vacuum pump 4, which operates within a pressure range of -1.5 kPa to -2.5 kPa. A filter screen is installed at the pipeline inlet of the vacuum pump 4. This filter screen is used to filter and remove impurities from the volatilized gas. The vacuum pump 4 is used to transport the hexane gas evaporated in the heating tank 1 to the condenser 7, thereby improving the hexane evaporation efficiency.

[0029] The condenser tank 7 has a tank structure. A condenser tank sealing cover 8 is provided on the top of the condenser tank 7. An vent pipe 10 is provided on the condenser tank sealing cover 8, and a gas-liquid separator is provided in the vent pipe 10. The gas-liquid separator is used to separate hexane liquid mixed in the vented gas. The vent pipe 10 is used to discharge gases that cannot be condensed in the condenser pipes. Condenser pipes 9 are provided on the bottom and side walls of the condenser tank 7. The condenser pipes 9 are used to condense the hexane gas in the condenser tank 7 to obtain liquid hexane 12. The condenser pipes 9 are connected to a condenser controller 11, which is used to control the condensation temperature of the condenser pipes 9.

[0030] The working principle of the polyethylene wax separation device in this utility model is as follows:

[0031] The sample 6 to be tested is added into the heating tank 1 through the sample inlet on the sealing cap 2 of the heating tank. The heating temperature of the heating tube 3 is adjusted by the heating controller 5 to evaporate the hexane in the sample 6. At the same time, the vacuum pump 4 is turned on to transport the hexane gas in the heating tank 1 to the condenser 7. The temperature of the condenser tube 9 is adjusted by the condenser controller 11 to condense the hexane gas into liquid hexane 12. The gas that cannot be condensed is fed into the collection device through the vent pipe 10 for centralized adsorption treatment.

[0032] In some other embodiments, the heating tank 1 or the condensing tank 7 is provided with a sleeve, which can be removed from the heating tank 1 or the condensing tank 7, thereby facilitating the weighing of the polyethylene wax content in the sample 6 to be tested or the analysis of the polyethylene wax composition in the sample 6 to be tested by chromatography.

[0033] The heating controller 5 and the condensing controller 11 used in this utility model are both conventional temperature controllers.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for separating polyethylene wax, characterized in that, It includes a heating tank, a vacuum pump, and a condensing tank connected in sequence. The heating tank and the condensing tank are both sealed tank structures. The vacuum pump is connected to the top of the heating tank and the condensing tank respectively through pipelines.

2. The polyethylene wax separation device according to claim 1, characterized in that, The heating tank includes a heating tank sealing cover, heating tubes, and a heating controller; the heating tank sealing cover is located on the top of the heating tank and has an openable sample dispensing port; the bottom and side walls of the heating tank are provided with heating tubes, which are connected to the heating controller.

3. The polyethylene wax separation device according to claim 2, characterized in that, The heating tank has an inner sleeve that can be removed from the heating tank.

4. The polyethylene wax separation device according to claim 1, characterized in that, The condenser includes a condenser sealing cover, condenser pipes, and a condenser controller; the condenser sealing cover is located on the top of the condenser, and condenser pipes are provided on the bottom and side walls of the condenser, and the condenser pipes are connected to the condenser controller.

5. The polyethylene wax separation device according to claim 4, characterized in that, The top of the condenser is also equipped with an vent pipe, which is connected to a collection device that centrally processes the uncondensed gas in the vent pipe.

6. The polyethylene wax separation device according to claim 4, characterized in that, The condenser is equipped with an inner sleeve that can be removed from the condenser.

7. The polyethylene wax separation device according to claim 1, characterized in that, The working pressure of the vacuum pump is controlled within the range of -1.5 kPa to -2.5 kPa.

8. The polyethylene wax separation device according to claim 2, characterized in that, The heating tank is also equipped with a stirrer, and the outer wall of the heating tank is also equipped with heat insulation cotton.

9. The polyethylene wax separation device according to claim 7, characterized in that, The vacuum pump is equipped with a filter screen at the pipeline inlet.

10. A polyethylene wax separation device according to claim 5, characterized in that, The vent pipe is equipped with a gas-liquid separator.

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