Methanol wax removal membrane separator

Abstract

The utility model belongs to the technical field of methanol wax removal separation equipment, and provides a methanol wax removal membrane separator, which comprises a hollow barrel, a membrane separator, a membrane separator, a membrane separator, a membrane separator and a membrane separator, the first partition plate is cylindrical, the two ends of the first partition plate are open, the first partition plate is arranged in the cylinder, and the bottom of the first partition plate is located below the air inlet; the second partition plate is annular, the second partition plate is arranged in the cylinder body, the second partition plate is arranged at the bottom of the first partition plate, and a wax guide pipe is arranged at the bottom of the second partition plate; the flow guide plates are in a V shape, the flow guide plates are inversely arranged in the pre-separation cavity and located above the air inlet, the multiple flow guide plates are evenly arranged around the axis of the barrel, and a channel is reserved at the opposite ends of any two adjacent flow guide plates; and the separation membrane group is arranged in the pre-separation cavity and is positioned above the guide plate. The methanol wax removal membrane separator provided by the utility model is simple in structure, and the separation membrane is not easy to block.

Description

Technical Field

[0001] This utility model relates to the technical field of methanol dewaxing and separation equipment, specifically to a methanol dewaxing membrane separator. Background Technology

[0002] In the industrial synthesis of methanol, paraffin impurities are inevitably produced. If the paraffin is treated, it will precipitate during the cooling and recovery of gaseous methanol, clogging the corresponding pipelines and causing system failure. To solve this problem, methanol dewaxing membrane separators have been developed.

[0003] However, in existing methanol dewaxing membrane separators, the wax in the gas is directly separated by the separation membrane during the separation process of wax-containing methanol gas entering the separator, without first separating the larger wax particles in the wax-containing methanol gas. This allows the larger wax particles to enter the separation membrane, which can easily cause blockage of the separation membrane. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a methanol dewaxing membrane separator to solve or alleviate the above-mentioned technical problems in the prior art.

[0005] To achieve the above objectives, this utility model provides a methanol dewaxing membrane separator, comprising:

[0006] A hollow cylinder has an air inlet on its outer side wall, which is connected to an air inlet pipe; an air outlet on its top side wall, which is connected to an air outlet pipe; and a wax discharge port on its bottom side wall, which is connected to a wax discharge pipe.

[0007] The first partition is cylindrical and open at both ends. The first partition is disposed inside the cylinder and coaxially arranged with the cylinder. The bottom of the first partition is located below the air inlet.

[0008] The second partition is annular and is disposed inside the cylinder and coaxially with the cylinder. The second partition is disposed at the bottom of the first partition. The outer side wall of the second partition is sealed to the inner side wall of the cylinder, and the inner side wall of the second partition is sealed to the outer side wall of the first partition, so that the first partition, the second partition and the cylinder form a pre-separation cavity. A wax inlet tube is disposed at the bottom of the second partition.

[0009] A V-shaped guide vane is placed inverted within the pre-separation chamber and above the air inlet. One side of the guide vane is sealed to the inner wall of the cylinder, and the other side is sealed to the outer wall of the first partition. Multiple guide vanes are evenly arranged around the axis of the cylinder, and a channel is provided at the opposite end of any two adjacent guide vanes for the passage of wax-containing methanol gas and the separated paraffin wax.

[0010] A separation membrane assembly is disposed within the pre-separation chamber and located above the guide plate.

[0011] Furthermore, the separation membrane assembly includes a plurality of first separation membranes, which are arranged sequentially at intervals along the axis of the cylinder, and the aperture of the plurality of first separation membranes decreases from bottom to top.

[0012] Furthermore, it also includes a separation tube, the bottom end of which is sealed and the top end is connected to and communicates with the air outlet, and the outer wall of the separation tube is provided with multiple membrane separation rods.

[0013] Furthermore, the bottom end of the separation tube extends below the second partition.

[0014] Furthermore, the length direction of the membrane separation rod extends radially along the separation tube.

[0015] Furthermore, the opposite ends of any two adjacent guide vanes are staggered.

[0016] Furthermore, the cross-section of the second partition is V-shaped.

[0017] The beneficial effects of this utility model are:

[0018] The methanol dewaxing membrane separator provided by this utility model has a simple structure and reasonable design. By setting a pre-separation chamber and installing a guide plate in the pre-separation chamber, the path of the gas is changed. By utilizing inertia and gravity, some of the larger waxes in the gas settle down, thereby achieving the purpose of initially separating a portion of the wax and thus avoiding the blockage of the separation membrane by larger waxes. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1This is a perspective view of a methanol dewaxing membrane separator provided in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A cross-sectional perspective view of the methanol dewaxing membrane separator shown.

[0022] Figure 3 for Figure 1 The image shows a cross-sectional view of a methanol dewaxing membrane separator.

[0023] Figure label:

[0024] 100. Cylinder body; 110. Air inlet; 120. Air outlet; 130. Wax discharge port; 200. First partition; 300. Second partition; 310. Wax guide tube; 400. Pre-separation chamber; 500. Guide plate; 600. Separation membrane assembly; 610. First separation membrane; 700. Separation tube; 800. Membrane separation rod. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] like Figure 1-3 As shown, this utility model provides a methanol dewaxing membrane separator, including a cylinder 100, a first partition 200, a second partition 300, a guide plate 500, and a separation membrane assembly.

[0032] The cylinder 100 is hollow, and an air inlet 110 is provided on the outer side wall of the cylinder 100, which is connected to an air inlet pipe. An air outlet 120 is provided on the top side wall of the cylinder 100, which is connected to an air outlet pipe. A wax discharge port 130 is provided on the bottom side wall of the cylinder 100, which is connected to a wax discharge pipe.

[0033] The first partition 200 is cylindrical with openings at both ends. It is disposed within the cylinder 100 and coaxially with the cylinder 100, with its bottom located below the air inlet 110. The second partition 300 is annular, also disposed within the cylinder 100 and coaxially with it. It is located below the first partition 200. The outer wall of the second partition 300 is sealed to the inner wall of the cylinder 100, and the inner wall of the second partition 300 is sealed to the outer wall of the first partition 200. This, along with the cylinder 100, forms a pre-separation chamber 400. A wax inlet tube 310 is located at the bottom of the second partition 300.

[0034] The guide vane 500 is V-shaped and inverted within the pre-separation chamber 400, positioned above the air inlet 110. One side of the guide vane 500 is sealed to the inner wall of the cylinder 100, and the other side is sealed to the outer wall of the first partition 200. Multiple guide vanes 500 are provided, evenly arranged around the axis of the cylinder 100. A channel is provided at the opposite end of any two adjacent guide vanes 500 for the passage of wax-containing methanol gas and the separated paraffin wax.

[0035] The separation membrane module 600 is disposed within the pre-separation chamber 400 and located above the guide plate 500.

[0036] During operation, the wax-containing methanol gas enters the pre-separation chamber 400 through the inlet 110. Under the action of the guide plate 500, the gas path is changed, thereby using inertia and gravity to cause some of the larger waxes in the gas to settle down, thus achieving the purpose of initially separating a portion of the wax. At the same time, it can also prevent larger waxes from clogging the separation membrane module 600.

[0037] Subsequently, the gas enters above the guide plate 500 through the channel between the guide plates 500, and under the action of the separation membrane module, the wax in the gas is separated.

[0038] Preferably, the separation membrane assembly includes a plurality of first separation membranes 610, which are arranged sequentially at intervals along the axis of the cylinder 100, and the aperture of the plurality of first separation membranes 610 decreases from bottom to top.

[0039] During operation, the pore size of the first separation membrane 610 in the separation membrane assembly decreases from bottom to top. Therefore, larger waxes can be separated through larger pores, and smaller waxes can be separated through smaller pores, which improves the separation effect and further reduces clogging.

[0040] Preferably, any two adjacent guide vanes 500 are staggered to further increase the change in gas path.

[0041] Preferably, the cross-section of the second partition 300 is V-shaped to facilitate the drainage of the separated wax.

[0042] like Figure 2-3 As shown, in this embodiment, a separation tube 700 is also included.

[0043] The bottom end of the separator 700 is sealed, and the top end is connected to and communicates with the air outlet 120. Multiple membrane separation rods 800 are provided on the outer wall of the separator 700.

[0044] During operation, the gas separated by the membrane module 600 enters the separation tube 700 through the membrane separation rod 800. Under the action of the membrane separation rod 800, the wax in the gas is further separated, thereby improving the separation effect. Furthermore, by setting multiple membrane separation rods 800, the specific area of ​​the membrane is increased, thereby improving the separation efficiency.

[0045] like Figure 2-3 As shown, the membrane separation rod 800 extends radially along the separation tube 700 in the longitudinal direction.

[0046] like Figure 2-3 As shown, the bottom end of the separation tube 700 extends below the second partition 300.

[0047] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A methanol dewaxing membrane separator, characterized in that, include: A hollow cylinder has an air inlet on its outer side wall, which is connected to an air inlet pipe; an air outlet on its top side wall, which is connected to an air outlet pipe; and a wax discharge port on its bottom side wall, which is connected to a wax discharge pipe. The first partition is cylindrical and open at both ends. The first partition is disposed inside the cylinder and coaxially arranged with the cylinder. The bottom of the first partition is located below the air inlet. The second partition is annular and is disposed inside the cylinder and coaxially with the cylinder. The second partition is disposed at the bottom of the first partition. The outer side wall of the second partition is sealed to the inner side wall of the cylinder, and the inner side wall of the second partition is sealed to the outer side wall of the first partition, so that the first partition, the second partition and the cylinder form a pre-separation cavity. A wax inlet tube is disposed at the bottom of the second partition. A V-shaped guide vane is placed inverted within the pre-separation chamber and above the air inlet. One side of the guide vane is sealed to the inner wall of the cylinder, and the other side is sealed to the outer wall of the first partition. Multiple guide vanes are evenly arranged around the axis of the cylinder, and a channel is provided at the opposite end of any two adjacent guide vanes for the passage of wax-containing methanol gas and the separated paraffin wax. A separation membrane assembly is disposed within the pre-separation chamber and located above the guide plate.

2. The methanol dewaxing membrane separator of claim 1, wherein, The separation membrane assembly includes a plurality of first separation membranes, which are arranged sequentially at intervals along the axis of the cylinder, and the aperture of the plurality of first separation membranes decreases from bottom to top.

3. The methanol dewaxing membrane separator according to claim 1 or 2, characterized in that, It also includes a separation tube, the bottom of which is sealed and the top of which is connected to and communicates with the air outlet. Multiple membrane separation rods are provided on the outer wall of the separation tube.

4. The methanol dewaxing membrane separator according to claim 3, characterized in that, The membrane separation rod extends radially along the separation tube.

5. The methanol dewaxing membrane separator of claim 4, wherein, The bottom end of the separation tube extends below the second partition.

6. The methanol dewaxing membrane separator of claim 1, 2, 4, or 5, wherein, The opposite ends of any two adjacent guide vanes are staggered.

7. The methanol dewaxing membrane separator of claim 1, 2, 4 or 5, wherein, The second partition has a V-shaped cross-section.

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