Separation system for high-density polyethylene wax

Abstract

The invention discloses a separation system for high-density polyethylene wax, and belongs to the technical field of chemical separation equipment, a feeding kettle is sleeved in a high-temperature steam spraying tank, the high-temperature steam spraying tank is hermetically connected with the feeding kettle through a group of circular rings, and a liquid discharge pipe is arranged on the circular ring close to the bottom of the feeding kettle; steam spraying pipes are arranged between the high-temperature steam spraying tank and the feeding kettle, the steam spraying pipes are evenly arranged on the high-temperature steam spraying tank, the feeding kettle is sleeved with the high-temperature steam spraying tank, the condensation kettle is installed above the feeding kettle, a group of steam conveying pipes are arranged on a circular ring close to the top of the feeding kettle, and the steam conveying pipes are communicated with the side edge of the condensation kettle. The steam conveying pipe is communicated with the feeding kettle through an inclined connecting pipe, the bottom of the condensation kettle is communicated with the steam conveying pipe through an inclined pipe, and a liquid return valve is arranged on the inclined pipe. The horizontal pushing polyethylene wax discharging tank solves the technical problem that an existing horizontal pushing polyethylene wax discharging tank needs a scraper knife to slowly shovel during discharging and is extremely inconvenient, and is mainly applied to chemical separation equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical separation equipment, and in particular relates to a separation system for high-density polyethylene wax. Background Art

[0002] Polyethylene wax (PE wax for short) is a by-product produced in the production process of polyethylene.

[0003] Polyethylene wax is usually a low molecular weight polyethylene with different molecular weights and molecular structures produced under the action of a catalyst during the polymerization reaction. Generally speaking, its molecular weight is less than 10,000.

[0004] From the physical properties, polyethylene wax is mostly white or light yellow solid waxy substance. It has good chemical stability, cold resistance, water resistance and electrical insulation properties.

[0005] In practical applications, polyethylene wax has a wide range of uses. For example, in the plastic processing industry, it can be used as a lubricant, release agent, dispersant, etc., which can improve the processing performance and surface properties of plastics; in the coating industry, it can improve the wear resistance, scratch resistance and stain resistance of coatings; in the ink industry, it helps to improve the friction resistance and smoothness of inks; in addition, it also has corresponding applications in rubber processing, textiles, papermaking and other fields.

[0006] The traditional method is to add water as a coolant to the wax collection tank, resulting in a high water content in the polyethylene wax. Water separation is required to obtain high-quality wax blocks. The existing water separation tank is extruded through a screw extruder. Wax molecules will adhere to the screw rod for a long time, resulting in poor extrusion effect. At the same time, the huge screw rod occupies a lot of space in the wax tank. We designed a flat push-out tank, but the polyethylene wax produced by this design needs to be slowly shoveled off with a spatula when discharging, which is extremely inconvenient. In response to the above problems, our company has proposed a high-density polyethylene wax separation system. Summary of the invention

[0007] Purpose of the invention: The purpose of the present invention is to provide a separation system for high-density polyethylene wax to solve the technical problem that the existing flat-push polyethylene wax discharging tank needs to use a shovel to slowly shovel down the material, which is extremely inconvenient.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a separation system of high-density polyethylene wax, comprising an air supply tank, a high-temperature steam spray tank, a high-temperature steam I end, a high-temperature steam II end, a feed kettle and a condenser kettle, the air supply tank is connected to the high-temperature steam spray tank respectively, and is characterized in that: a feed kettle is sleeved inside the high-temperature steam spray tank, the high-temperature steam spray tank and the feed kettle are sealed and connected by a group of circular rings, a drain pipe is arranged on the circular ring near the bottom of the feed kettle, a steam spray pipe is arranged between the high-temperature steam spray tank and the feed kettle, the steam spray pipes are evenly arranged on the high-temperature steam spray tank, a feed kettle is sleeved inside the high-temperature steam spray tank, a condenser kettle is installed above the feed kettle, a group of steam transmission pipes are arranged on the circular ring near the top of the feed kettle, the steam transmission pipe is connected to the side of the condenser kettle, the steam transmission pipe and the feed kettle are connected by an oblique connecting pipe, the bottom of the condenser kettle is connected to the steam transmission pipe through an oblique pipe, and a liquid return valve is arranged on the oblique pipe.

[0009] Preferably, the condensing kettle comprises a kettle body I, a finned heat sink and a truncated cone, a truncated cone is arranged inside the kettle body I and the bottom of the truncated cone is not in contact with the kettle body I, a finned heat sink is arranged on the truncated cone, and a steam exhaust port is arranged on the kettle body I.

[0010] Preferably, the feeding kettle includes a kettle body II and a linear stroke mechanism, a sealing groove I is arranged on the inner side of the kettle body II, a groove is arranged on the top of the kettle body II, a connecting rod is arranged inside the groove, a through hole is arranged on the kettle body II, a sealing plate is arranged inside the kettle body II, and the sealing plate is above the oblique connecting pipe. A linear stroke mechanism is installed on the top of the kettle body II, and the telescopic end of the linear stroke mechanism passes through the through hole and is connected and fixed to the sealing plate. A vertical rod is arranged at the bottom of the sealing plate, a dividing plate is sleeved on the vertical rod, and the dividing plate slides on the vertical rod. A wire hole is arranged on the sealing plate, and a connecting wire is arranged on the top surface of the dividing plate. The connecting wire passes through the wire hole and is fixedly connected to the top surface of the sealing plate through the upper end of the connecting rod. A sealing bottom plate is arranged at the bottom of the sealing plate, and a sealing ring is fixedly arranged on the side of the sealing bottom plate. A mixed material feeding pipe is also arranged on the sealing plate, and the mixed material feeding pipe is connected to the feeding spring tube.

[0011] Preferably, a drain valve is provided on the drain pipe.

[0012] Preferably, the linear travel mechanism is any one of an electric push rod, a pneumatic cylinder and an electric cylinder.

[0013] Preferably, the dividing plate is a circular ring plate with vertical and horizontal meshes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The gas supply tank evenly sprays the high-temperature hot steam into the feed kettle. The water vapor in the polyethylene wax water in the feed kettle is sprayed to the condenser through the steam pipe to condense into water, and part of the water vapor is discharged;

[0016] Then the wax is shaped, the gas supply tank stops supplying gas, the return valve on the inclined pipe is opened, one of the return valves is not opened, and the condensed water in the condenser flows into the high-temperature steam spray tank and the feed kettle through the inclined pipe with the open return valve to shape the wax. The condensed water in the condenser meets the needs of shaping the polyethylene wax inside the feed kettle and will not exceed the horizontal plane of the inclined connecting pipe. The drain valve on the bottom drain pipe is finally opened;

[0017] The linear travel mechanism moves the sealing plate downward, and the partition plate rises during the downward movement of the sealing plate. The whole process not only facilitates the partition plate to cut the high-density polyethylene wax, but the sealing plate and the partition plate can also cooperate to scrape off the wax sheet inside the kettle body II.

[0018] Compared with the prior art, when the flat-push polyethylene wax discharging tank is used, the polyethylene wax can be discharged quickly and also has the function of condensation and shaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial system diagram of the present invention;

[0020] Figure 2 It is a three-dimensional diagram of the high-temperature steam spray tank and the condensing kettle of the present invention;

[0021] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0022] Figure 4 It is a cross-sectional view of the high-temperature steam spray tank and the feed kettle in the present invention;

[0023] Figure 5 It is the internal structure diagram of the feed kettle of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged view of point B;

[0025] Figure 7 It is a three-dimensional diagram of the condensing kettle of the present invention;

[0026] Figure 8 A three-dimensional diagram of a partition plate of the present invention;

[0027] Fig. 9 It is a three-dimensional diagram of the sealing bottom plate of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example

[0030] See also Figure 1-Figure 9 The present invention provides a technical solution: a separation system of high-density polyethylene wax, comprising a gas supply tank 6, a high-temperature steam spray tank 1, a high-temperature steam I end 11, a high-temperature steam II end 12, a feed kettle 2 and a condenser 3, wherein the gas supply tank 6 is connected to the high-temperature steam spray tank 1, and the gas supply tank 6 is connected to the high-temperature steam spray tank 1, and the gas supply tank 6 is connected to the high-temperature steam spray tank 1, and the gas supply tank 6 is connected to the high-temperature steam spray tank 1, and the high-temperature steam spray tank 1 is sealed and connected to the feed kettle 2 through a group of circular rings 13, a liquid discharge pipe 14 is arranged on the circular ring 13 near the bottom of the feed kettle 2, and a liquid discharge pipe 14 is arranged between the high-temperature steam spray tank 1 and the feed kettle 2. A steam spray pipe 16 is arranged, and the steam spray pipe 16 is evenly arranged on the high-temperature steam spray tank 1. A feed kettle 2 is sleeved inside the high-temperature steam spray tank 1, and a condensing kettle 3 is installed above the feed kettle 2. A group of steam transmission pipes 17 are arranged on the ring 13 near the top of the feed kettle 2. The steam transmission pipe 17 is connected with the side of the condensing kettle 3. The steam transmission pipe 17 and the feed kettle 2 are connected through an inclined connecting pipe 171. The bottom of the condensing kettle 3 is connected with the steam transmission pipe 17 through an inclined pipe 21. A liquid return valve 22 is arranged on the inclined pipe 21, and the liquid return valve 22 is a one-way valve. A liquid discharge valve 15 is arranged on the liquid discharge pipe 14.

[0031] In one embodiment, see Figure 7 The condensing kettle 3 includes a kettle body Ⅰ31, a fin radiator 32 and a truncated cone 33. The truncated cone 33 is arranged inside the kettle body Ⅰ31 and the bottom of the truncated cone 33 does not contact the kettle body Ⅰ31. The truncated cone 33 is fixedly connected to the top of the kettle body Ⅰ31. The fin radiator 32 is arranged on the truncated cone 33, and the kettle body Ⅰ31 is arranged on the exhaust port 34.

[0032] In one embodiment, see Figures 5 to 7 The rated unit amount of wax-water mixture enters the feed kettle 2 through the feed spring tube 55, and the gas supply tank 6 evenly sprays the high-temperature hot steam into the feed kettle 2. The water vapor in the polyethylene wax water in the feed kettle 2 is sprayed to the condensation kettle 3 through the steam pipe 17 to condense into water, and part of the water vapor is discharged through the exhaust port 34 to separate the wax and water.

[0033] In one embodiment, see Figures 1 to 5The feeding kettle 2 includes a kettle body Ⅱ4 and a linear stroke mechanism 5. A sealing groove Ⅰ41 is arranged on the inner side of the kettle body Ⅱ4, a groove 42 is arranged on the top of the kettle body Ⅱ4, a connecting rod 43 is arranged inside the groove 42, a through hole 44 is arranged on the kettle body Ⅱ4, and a sealing plate 45 is arranged inside the kettle body Ⅱ4. The sealing plate 45 is above the oblique connecting pipe 171. The dividing plate 47 rises during the downward movement of the sealing plate 45, which not only facilitates the cutting of the high-density polyethylene wax by the dividing plate 47, but also enables the sealing plate 45 and the dividing plate 47 to cooperate to scrape off the wax sheet inside the kettle body Ⅱ4. A linear stroke mechanism 5 is installed on the top of the kettle body Ⅱ4. The linear stroke mechanism 5 is any one of an electric push rod, a cylinder and an electric cylinder. The telescopic end of the linear stroke mechanism 5 passes through the through hole 44 and is connected and fixed to the sealing plate 45. The bottom of the sealing plate 45 A vertical rod 46 is provided, on which a partition plate 47 is sleeved, and the partition plate 47 slides on the vertical rod 46; a wire hole 48 is provided on the sealing plate 45; the partition plate 47 is a circular ring plate with a vertical and horizontal net 471; a connecting wire 49 is provided on the top surface of the partition plate 47; the connecting wire 49 passes through the wire hole 48 and is fixedly connected to the top surface of the sealing plate 45 through the upper end of the connecting rod 43; a sealing bottom plate 51 is provided at the bottom of the sealing plate 45; a sealing ring 53 is fixedly provided on the side of the sealing bottom plate 51; the sealing ring 53 enters the sealing groove I 41 for sealing; a mixed material feed pipe 54 is also provided on the sealing plate 45; the mixed material feed pipe 54 is connected to a feed spring tube 55; the feed spring tube 55 is connected to an external feed kettle (not shown in the figure); and the partition plate 47 is a circular ring plate with a vertical and horizontal net 471.

[0034] In one embodiment, see Figures 1 to 5 , wait for the water in the high-density polyethylene wax to evaporate, this process lasts for 30 minutes, and then the wax setting process is carried out, the gas supply tank 6 stops supplying gas, the return valve 22 on the inclined tube 21 is opened, one of the return valves 22 is not opened, and the condensation kettle 3 condenses into water. By opening the return valve 22 on the inclined tube 21, the condensed water flows into the high-temperature steam spray tank 1 and the feed kettle 2 for setting. The condensation kettle 3 condenses into water to meet the polyethylene wax setting inside the feed kettle 2 and will not exceed the horizontal plane of the inclined connecting pipe 171. The drain valve 15 on the bottom drain pipe 14 is finally opened;

[0035] The linear travel mechanism 5 moves the sealing plate 45 downward, and the dividing plate 47 rises during the downward movement of the sealing plate 45. The whole process not only facilitates the cutting of the high-density polyethylene wax by the dividing plate 47, but the sealing plate 45 and the dividing plate 47 can also cooperate to scrape off the inner wax sheet of the kettle body II 4.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separation system for high-density polyethylene wax, comprising a gas supply tank, a high-temperature steam spray tank, a high-temperature steam I end, a high-temperature steam II end, a feed kettle and a condenser, wherein the gas supply tank is connected to the high-temperature steam spray tank respectively, and characterized in that: A feed kettle is arranged inside the high-temperature steam spray tank, and the high-temperature steam spray tank and the feed kettle are sealed and connected by a group of circular rings. A drain pipe is arranged on the circular ring near the bottom of the feed kettle, and a steam spray pipe is arranged between the high-temperature steam spray tank and the feed kettle. The steam spray pipes are evenly arranged on the high-temperature steam spray tank. A feed kettle is arranged inside the high-temperature steam spray tank, and a condensing kettle is installed above the feed kettle. A group of steam transmission pipes are arranged on the circular ring near the top of the feed kettle. The steam transmission pipe is connected to the side of the condensing kettle, and the steam transmission pipe is connected to the feed kettle through an inclined connecting pipe. The bottom of the condensing kettle is connected to the steam transmission pipe through an inclined pipe, and a liquid return valve is arranged on the inclined pipe.

2. A high-density polyethylene wax separation system according to claim 1, characterized in that: The condensing kettle comprises a kettle body I, a finned radiator and a truncated table. The truncated table is arranged inside the kettle body I and the bottom of the truncated table is not in contact with the kettle body I. The finned radiator is arranged on the truncated table and the kettle body I is provided with a steam exhaust port.

3. A high-density polyethylene wax separation system according to claim 1, characterized in that: The feeding kettle comprises a kettle body II and a linear stroke mechanism, a sealing groove I is arranged on the inner side of the kettle body II, a groove is arranged on the top of the kettle body II, a connecting rod is arranged inside the groove, a through hole is arranged on the kettle body II, a sealing plate is arranged inside the kettle body II, the sealing plate is above the oblique connecting pipe, a linear stroke mechanism is installed on the top of the kettle body II, the telescopic end of the linear stroke mechanism passes through the through hole and is connected and fixed to the sealing plate, a vertical rod is arranged at the bottom of the sealing plate, a dividing plate is sleeved on the vertical rod, and the dividing plate slides on the vertical rod, a wire hole is arranged on the sealing plate, a connecting wire is arranged on the top surface of the dividing plate, the connecting wire passes through the wire hole and is fixedly connected to the top surface of the sealing plate through the upper end of the connecting rod, a sealing bottom plate is arranged at the bottom of the sealing plate, a sealing ring is fixedly arranged on the side of the sealing bottom plate, a mixed material feeding pipe is also arranged on the sealing plate, and the mixed material feeding pipe is connected to the feeding spring tube.

4. A high-density polyethylene wax separation system according to claim 1, characterized in that: A drain valve is provided on the drain pipe.

5. A high-density polyethylene wax separation system according to claim 2, characterized in that: The linear travel mechanism is any one of an electric push rod, a pneumatic cylinder and an electric cylinder.

6. A high-density polyethylene wax separation system according to claim 3, characterized in that: The dividing plate is a circular ring plate with vertical and horizontal meshes.

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