Apparatus for measuring flowability of metallocene catalyst

Abstract

A metallocene catalyst flowability measuring device is disclosed. The metallocene catalyst flowability measuring device comprises: a body portion having a measuring space formed therein; a lifting and rotating portion installed to be capable of lifting and rotating within the measuring space; a driving portion transmitting driving force to the lifting and rotating portion; a powder storage portion installed at the lower part of the body portion and storing powder; a catalyst loading portion installed at the end of the lifting and rotating portion, having a catalyst loaded therein and lowered to the position of the powder storage portion as the lifting and rotating portion lowers; and a cover portion installed above the catalyst loading portion and covering the outside of the powder storage portion when the catalyst loading portion is lowered to the position of the powder storage portion.

Description

Technology Field

[0001] The present invention relates to a metallocene catalyst flowability measuring device capable of improving the reliability of catalyst flowability measurement. Background Technology

[0002] Generally, metallocene catalysts, which are one of the catalysts used for polymerizing olefins, are compounds in which ligands such as cyclopentadienyl, indenyl, and cycloheptadienyl are coordinately bonded to a transition metal or a transition metal halogen compound, and have a sandwich structure as their basic form.

[0003] Unlike Ziegler-Natta catalysts, another catalyst used for polymerizing olefins, in which the active metal component is dispersed on an inert solid surface and the properties of the active site are non-uniform, metallocene catalysts are known as single-site catalysts because they are a single compound with a fixed structure, and therefore all active sites possess identical polymerization characteristics.

[0004] Polymers polymerized with such metallocene catalysts exhibit a narrow molecular weight distribution and a uniform distribution of comonomers.

[0005] Meanwhile, when polymerizing olefins in a fluidized bed reactor using a metallocene catalyst, if the flowability of the catalyst is not smooth, there is a problem where the catalyst input line becomes clogged.

[0006] Therefore, accurate evaluation of the flowability of the metallocene catalyst is required to ensure smooth polymerization of olefins in a fluidized bed reactor.

[0007] In conventional metallocene catalyst flowability evaluation, the evaluation is conducted with the powder and catalyst exposed to the atmosphere during the flowability evaluation process.

[0008] However, in the conventional metallocene total catalyst evaluation process, there is a problem in that the reliability of the flowability evaluation is reduced because the intrinsic properties of the catalyst change when the metallocene catalyst is exposed to the atmosphere. The problem to be solved

[0009] One embodiment of the present invention aims to provide a metallocene catalyst flowability measuring device capable of measuring the flowability of a catalyst without exposure to the atmosphere. means of solving the problem

[0010] One embodiment of the present invention comprises a body portion having a measuring space formed therein, a lifting and rotating portion installed to be capable of lifting and rotating within the measuring space, a driving portion that transmits driving force to the lifting and rotating portion, a powder storage portion installed at the lower part of the body portion and storing powder, a catalyst loading portion installed at the end of the lifting and rotating portion and having a catalyst loaded therein and lowered to the position of the powder storage portion as the lifting and rotating portion lowers, and a cover portion installed above the catalyst loading portion and covering the outside of the powder storage portion when the catalyst loading portion is lowered to the position of the powder storage portion.

[0011] The lifting rotating part may be a cylinder member comprising a rod member on which a catalyst loading part is installed, wherein one side of the body part is connected to a driving part and is rotatably installed.

[0012] The driving unit may be a driving motor installed on the upper side of the body unit to transmit rotational driving force to the cylinder member.

[0013] The powder storage section is located at the bottom of the measuring space of the body section, and a storage space can be formed inside which powder is stored and which is open to the top.

[0014] The catalyst loading section may include a loading body installed at the end of a load member, and a catalyst insertion section formed inside the loading body, into which a catalyst is inserted, and which comes into contact with powder stored inside a storage space.

[0015] The cover portion is installed on the load member and can be installed to cover the outside of the powder storage portion while the catalyst loading portion is lowered to come into contact with the powder storage portion.

[0016] A sealing member that contacts the inner surface of the cover portion may be installed on the outer surface of the powder storage portion. Effects of the invention

[0017] According to one embodiment of the present invention, in the process of measuring the flowability of a metallocene catalyst, measurement can be performed without exposure to the atmosphere, thereby improving measurement reliability. Brief explanation of the drawing

[0018] FIG. 1 is a schematic perspective view illustrating a metallocene catalyst flowability measuring device according to one embodiment of the present invention. FIG. 2 is a schematic perspective view illustrating a state in which a catalyst loading unit installed in a lifting rotating part according to one embodiment of the present invention is located on the upper side of a powder storage part. FIG. 3 is a schematic perspective view of the main parts illustrating the catalyst loading part and the cover part according to one embodiment of the present invention. FIG. 4 is a schematic perspective view illustrating a catalyst loading section according to one embodiment of the present invention. FIG. 5 is a perspective view schematically illustrating the catalyst loading section of FIG. 4 from another side. Specific details for implementing the invention

[0019] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts unrelated to the explanation have been omitted to clearly explain the present invention, and the same reference numerals have been used throughout the specification for identical or similar components.

[0020] FIG. 1 is a schematic perspective view illustrating a metallocene catalyst flowability measuring device according to one embodiment of the present invention, and FIG. 2 is a schematic perspective view illustrating a catalyst loading part installed in a lifting rotating part according to one embodiment of the present invention, positioned above a powder storage part.

[0021] As illustrated in FIGS. 1 and 2, a metallocene catalyst flowability measuring device (100) according to one embodiment of the present invention comprises: a body part (10) having a measuring space (12) formed inside; a lifting and rotating part (20) installed to be able to lift and rotate within the measuring space (12); a driving part (30) that transmits driving force to the lifting and rotating part (20); a powder storage part (50) installed at the bottom of the body part (10) and storing powder; a catalyst loading part (40) installed at the end of the lifting and rotating part (20) and loaded with catalyst inside, which descends to the position of the powder storage part (50) as the lifting and rotating part descends; and a cover part (60) installed on the upper side of the catalyst loading part (40) and covering the outside of the catalyst loading part (40) in the descended state to the position of the powder storage part (50).

[0022] The body part (10) is positioned on the floor surface of the measurement location and can be installed on the floor surface of the measurement location with a measurement space (12) formed inside.

[0023] This body part (10) may include a base part (11) located on the floor surface of the measurement location, a side part (13) protruding upward from one edge of the base part (11), and an upper part (15) protruding upward from the upper side of the side part (13) and having a lifting rotation part (20) installed thereon.

[0024] In this embodiment, the body part (10) is exemplarily described as including a base part (11), a side part (13), and an upper part (15), but is not necessarily limited thereto and may be appropriately modified into a predetermined shape in which a predetermined measuring space for measurement is formed inside.

[0025] The body part (10) may be formed of a metal material to maintain stable durability during the measurement process. Of course, the body part (10) is not necessarily limited to a metal material, and it may also be formed of a specific material such as an engineering plastic material capable of maintaining sufficient measurement durability.

[0026] A lifting and rotating part (20) may be installed in this body part (10).

[0027] The lifting and rotating part (20) is installed on the upper part (15) of the body part (10) and can be installed to be able to rise, fall, or rotate within the measurement space (12). In this way, the lifting and rotating part (20) is installed on the body part (10) to enable the catalyst loading part (40) to be installed to be able to rise, fall, or rotate within the measurement space (12).

[0028] More specifically, the lifting rotation part (20) can be applied as a cylinder member comprising a rod member (21) on which a catalyst loading part (40) is installed, wherein one side of the rod member (21) is connected to the driving part (30) and is rotatably installed on the body part (10). In the following, the lifting rotation part and the cylinder member use the same reference numerals.

[0029] The cylinder member (20) can be installed so that its body part is connected to the drive shaft of the drive unit (30) and can rotate in one direction or in the reverse direction.

[0030] The cylinder member (20) can be installed to be rotatable in one direction or in the reverse direction on the upper part (15) of the body part (10) by the driving force of the driving part (30).

[0031] The driving unit (30) is installed on the upper part (15) of the body part (10), and the driving shaft can be connected to the body part of the cylinder member (20). In this embodiment, the driving unit (30) can be applied as a driving motor that provides rotational driving force.

[0032] Accordingly, the cylinder member (20) can be installed to rotate in one direction or in the reverse direction inside the measurement space (12) according to the driving operation of the driving unit (30).

[0033] A catalyst loading portion (40) may be installed on the load member (21) of the cylinder member (20).

[0034] The catalyst loading section (40) is installed at the end of the load member (21) and operates to rise or fall together with the rise or fall of the load member (21), and can be rotated in one direction or in the reverse direction by the rotational driving force of the driving section (30).

[0035] FIG. 3 is a schematic perspective view illustrating a catalyst loading section and a cover section according to one embodiment of the present invention, FIG. 4 is a schematic perspective view illustrating a catalyst loading section according to one embodiment of the present invention, and FIG. 5 is a schematic perspective view illustrating the catalyst loading section of FIG. 4 from another side.

[0036] As illustrated in FIGS. 3 to 5, the catalyst loading portion (40) may include a loading body (41) installed at the end of the load member (21) and a catalyst insertion portion (43) formed inside the loading body (41) and into which a catalyst is inserted.

[0037] The loading body (41) has an end of the load member (21) connected to the center position of the upper surface, and the edge may be formed in a round shape. Of course, the loading body (41) is not necessarily limited to a round shape, and it is also possible to appropriately change it to a predetermined shape that does not interfere with adjacent equipment.

[0038] A catalyst insertion part (43) can be formed inside such a loading body (41).

[0039] The catalyst insertion portion (43) is formed inward from the lower surface of the loading body (41), so that a catalyst can be inserted. Thus, the catalyst insertion portion (43) is formed in the loading body (41) so as to properly measure flowability by contacting the powder while the catalyst loading portion (40) is lowered to the position of the powder storage portion (50).

[0040] That is, the catalyst loading section (40) is lowered to the position of the powder storage section (50) according to the operation of the driving section (30) and the cylinder member (20) and rotates in one direction or the reverse direction, so that the flowability can be properly measured in the contact state between the powder and the catalyst.

[0041] Meanwhile, a powder storage unit (50) may be installed in the lower part of the measurement space (12) of the body part (10).

[0042] The powder storage section (50) is located at the bottom of the measuring space (12) of the body section (10), and may have a storage space (51) formed therein that is open to the top and stores powder.

[0043] That is, the powder storage unit (50) is formed in a round shape, and a storage space (51) that is open to the top can be formed inside.

[0044] The storage space (51) is formed inside the powder storage section (50), and a circular opening (52) may be formed at the top. The diameter of this opening (52) may be formed to correspond to the diameter of the catalyst insertion section (43).

[0045] Accordingly, the powder is exposed to the outside through the opening (52) of the storage space (51) and comes into contact with the catalyst insertion part (43) by the downward operation of the catalyst loading part (40), so that the flowability of the catalyst can be easily measured.

[0046] Meanwhile, a cover part (60) may be installed on the load member (21).

[0047] The cover portion (60) is installed on the load member (21), and can be installed on the load member (21) at an upper position of the catalyst loading portion (40).

[0048] The cover portion (60) is lowered or raised in conjunction with the upward or downward operation of the load member (21), and can be installed to cover the outside of the powder storage portion (50) when the catalyst loading portion (40) is lowered in accordance with the downward operation of the load member (21) and comes into contact with the powder storage portion (50).

[0049] In this way, the cover portion (60) is installed so that the flowability measurement can be effectively performed by contacting the powder without the catalyst being exposed to the atmosphere.

[0050] That is, if the catalyst is exposed to the atmosphere, the inherent properties of the catalyst may change. Therefore, the cover portion (60) of the present embodiment is installed to cover both the powder storage portion (50) and the catalyst loading portion (40), thereby preventing exposure of the catalyst to the atmosphere and enabling effective measurement of catalyst flowability.

[0051] To further prevent exposure of the catalyst to the atmosphere, a sealing portion (70) may be installed on the outer surface of the powder storage portion (50).

[0052] The sealing portion (70) can be applied as a rubber ring installed on the outer surface of the powder storage portion (50). In the following, the sealing portion and the rubber ring use the same reference numeral.

[0053] Since at least two or more rubber rings (70) are installed on the outer surface of the sealing portion (70), when the cover portion (60) is inserted outside the powder storage portion (50), the outer surface of the powder storage portion (50) and the inner surface of the cover portion (60) can be sealed in a sealed state. Accordingly, air is not introduced into the catalyst insertion portion (43), so the flowability of the catalyst can be measured more effectively.

[0054] As described above, the metallocene catalyst flowability measuring device (100) of the present embodiment can measure the flowability of the metallocene catalyst without being exposed to the atmosphere during the process of measuring the flowability of the metallocene catalyst, thereby improving measurement reliability.

[0055] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that such modifications also fall within the scope of the present invention. Explanation of the symbols

[0056] 10...Body part 11...Bass part 12...measurement space 13...side 15...Upper part 20...Lifting rotating part, cylinder member 30...Drive unit, drive motor 40...Catalyst loading unit 41...Loading body 43...Catalyst insertion part 50...Powder storage compartment 51...Storage space 52...opening 60...cover 70...Sealing part, rubber ring

Claims

Claim 1 A body part having a measuring space formed inside; a lifting and rotating part installed to be capable of lifting and rotating within the measuring space; a driving part that transmits driving force to the lifting and rotating part; a powder storage part installed at the bottom of the body part, having a storage space formed therein that is open to the top and stores powder inside; and a catalyst loading part installed at the end of the lifting and rotating part, having a catalyst loaded inside, and lowering to the position of the powder storage part as the lifting and rotating part descends. A metallocene catalyst flowability measuring device comprising: a cover portion installed on the upper side of the catalyst loading portion and covering the outside of the powder storage portion when the catalyst loading portion is lowered to the powder storage portion position; wherein the lifting and rotating portion is a cylinder member having one side connected to the driving portion and rotatably installed thereon, and the catalyst loading portion includes a rod member on which the catalyst loading portion is installed; wherein the catalyst loading portion includes a loading body installed at the end of the rod member and a catalyst insertion portion formed inward from the lower surface of the loading body, into which a catalyst is inserted, and which contacts the powder stored inside the storage space; wherein the catalyst loading portion rotates in one direction or in the reverse direction while lowered to the powder storage portion position according to the operation of the driving portion and the cylinder member, and the catalyst inserted in the catalyst insertion portion is in contact with the powder stored in the powder storage portion, and the catalyst flowability is measured. Claim 2 delete Claim 3 A metallocene catalyst flowability measuring device according to claim 1, wherein the driving unit is a driving motor installed on the upper side of the body unit and transmitting rotational driving force to the cylinder member. Claim 4 delete Claim 5 delete Claim 6 A metallocene catalyst flowability measuring device according to paragraph 3, wherein the cover portion is installed on the load member and is installed to cover the outside of the powder storage portion while the catalyst loading portion is lowered to contact the powder storage portion. Claim 7 A metallocene catalyst flowability measuring device according to claim 6, wherein a sealing member that contacts the inner surface of the cover portion is installed on the outer surface of the powder storage portion.

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