A device for converting methanol into low-carbon olefins

Abstract

The utility model relates to the technical field of low carbon olefin production, and disclose a kind of for methanol conversion preparation low carbon olefin equipment, including equipment shell, the outer wall of equipment shell is connected with gas inlet, the upper end in the inside of equipment shell is equipped with for water spraying water spraying mechanism, the inner wall of equipment shell is equipped with for filtering filter mechanism;The water spraying mechanism includes mounting piece, the upper end in the inside of equipment shell is fixed in mounting piece, the inside of mounting piece is rotatably connected with water wheel by bearing, the lower end of water wheel is fixed with connecting pipe.The utility model high pressure water pump will be stored in the bottom of equipment shell Water is pumped out, is transported to mounting piece by delivery pipe, water enters to mounting piece after will promote water wheel rotation, water wheel rotation drives connecting pipe rotation, is sprayed out again through spraying head, connecting piece is driven rotation by connecting pipe, so that spraying head can evenly water, and then improve washing effect, improve practicability.

Description

Technical Field

[0001] This utility model relates to the field of low-carbon olefin production technology, specifically to a device for converting methanol to low-carbon olefins. Background Technology

[0002] Methanol-to-olefins (MTO) equipment is a key unit in modern coal chemical industry. Its core function is to convert methanol into low-carbon olefins such as ethylene and propylene through a catalytic reaction. In methanol-to-olefins (MTO) or dimethyl ether (DME) processes, methanol consumption (the amount of methanol required to produce one ton of olefins) is a key indicator of economic efficiency. Dimethyl ether is an intermediate or byproduct of the MTO reaction. It is separated from the gas phase and recovered using a scrubbing tower to prevent it from being emitted with the tail gas or entering subsequent separation systems, thus reducing non-target methanol conversion.

[0003] In existing technologies, such as the methanol-to-olefins (MTO) reaction gas washing system disclosed in CN204502643U, a water washing tower and a wastewater stripping tower are connected in sequence. The water washing tower contains a catalyst washing section, a steam condensation section, and a water washing section arranged sequentially from top to bottom. The catalyst washing section of the water washing tower has a reaction gas inlet connected to the MTO reactor. The water washing system also includes an external superheating section, which is connected between the reaction gas inlet and the MTO reactor. This external superheating section removes superheat from the reaction gas, allowing it to quickly reach saturation. In the catalyst washing section, solid catalyst particles are easily removed, effectively alleviating the problem of catalyst-induced blockage in the water washing tower.

[0004] Existing olefin equipment uses an external superheating section to desuperheat the reactant gas, allowing it to quickly reach saturation. This facilitates the removal of solid catalyst particles in the catalyst washing section, effectively mitigating the problem of catalyst clogging in the water washing tower. However, the fixed position of the water spray nozzles during use can easily lead to uneven water washing, resulting in poor practicality. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that the spray nozzles in the above-mentioned or existing technologies are fixed in position during use, uneven water washing is likely to occur during water washing, resulting in poor applicability.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A device for converting methanol to low-carbon olefins includes a housing, an air inlet connected to the outer wall of the housing, a water spraying mechanism for spraying water at the upper end of the inner side of the housing, and a filtration mechanism for filtering water on the inner wall of the housing.

[0009] The water spraying mechanism includes a mounting component, which is fixed to the upper part of the equipment housing. A water wheel is rotatably connected to the inside of the mounting component via a bearing. A connecting pipe is fixed to the lower end of the water wheel. A fixed bearing embedded in the mounting component is sleeved on the outer surface of the connecting pipe. A through hole communicating with the mounting component is opened on the outer wall of the connecting pipe.

[0010] As a further improvement of this utility model: the lower end of the connecting pipe is symmetrically connected to four connecting parts, and the lower ends of the four connecting parts are equidistantly connected to several spray heads.

[0011] As a further improvement of this utility model: one side of the mounting component is connected to a conveying pipe, and the end of the conveying pipe is connected to a high-pressure water pump.

[0012] As a further improvement of this utility model: the input end of the high-pressure water pump is connected to a filter element, and a fine filter screen is installed vertically inside the filter element.

[0013] As a further improvement of this utility model, both ends of the fine filter screen are fixed with connecting blocks that are plugged into and connected to the filter element.

[0014] As a further improvement of this utility model: the filtration mechanism includes a coarse filter screen, which is detachably installed on the inner wall of the equipment housing.

[0015] As a further improvement of this utility model, a first filler layer is provided above the coarse filter screen and is detachably connected to the equipment housing.

[0016] As a further improvement of this utility model, a second packing layer is provided above the first packing layer and is detachably connected to the equipment housing.

[0017] As a further improvement of this utility model: a demister is provided above the second packing layer and is fixedly connected to the equipment housing.

[0018] As a further embodiment of this utility model: the outer wall of the equipment housing is hinged with two maintenance doors corresponding to the first packing layer and the second packing layer, and the upper surface of the equipment housing is connected to an exhaust pipe.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The high-pressure water pump of this utility model extracts water stored at the bottom of the equipment casing and delivers it to the mounting component through the conveying pipe. After the water enters the mounting component, it will drive the water wheel to rotate. The rotation of the water wheel will drive the connecting pipe to rotate and then spray it out through the spray head. The connecting component is driven to rotate by the connecting pipe, so that the spray head can spray water evenly, thereby improving the water washing effect and improving practicality.

[0021] 2. When water passes through the coarse filter screen, the larger impurities in the water can be filtered out and then enter the bottom of the equipment shell for recycling. The fine filter screen set inside the filter element can filter out smaller impurities in the water, thereby reducing the possibility of blockage in subsequent conveying. The fine filter screen can be disassembled and replaced by pulling it vertically through the connecting block set on the fine filter screen. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of an equipment for methanol-to-olefins conversion;

[0023] Figure 2 This is a schematic diagram of the internal structure of the outer shell of a methanol-to-olefins equipment.

[0024] Figure 3 This is a schematic cross-sectional view of the outer casing of a methanol-to-olefins equipment.

[0025] Figure 4 This is a schematic cross-sectional view of an installation component used in a methanol-to-olefins conversion equipment.

[0026] Figure 5 This is a three-dimensional structural diagram of a connecting pipe used in a methanol-to-olefins conversion device.

[0027] Figure 6 This is a schematic cross-sectional view of a filter element used in a methanol-to-olefins conversion device.

[0028] In the diagram: 1. Equipment casing; 2. Air inlet; 3. Mounting components; 31. Water wheel; 32. Connecting pipe; 33. Fixed bearing; 34. Through hole; 35. Connecting component; 36. Spray head; 37. Delivery pipe; 38. High-pressure water pump; 4. Filter element; 5. Fine filter screen; 6. Connecting block; 7. Coarse filter screen; 71. First packing layer; 72. Second packing layer; 73. Demister; 74. Maintenance door; 8. Exhaust pipe. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0032] Example 1:

[0033] Please see Figures 1-6 This is the first embodiment of the present utility model. This embodiment provides a device for converting methanol to low-carbon olefins, including a device shell 1, an air inlet 2 connected to the outer wall of the device shell 1, a water spraying mechanism for spraying water at the upper end of the inside of the device shell 1, and a filter mechanism for filtering on the inner wall of the device shell 1.

[0034] The water spraying mechanism includes a mounting component 3, which is fixed to the upper part of the equipment housing 1. A water wheel 31 is rotatably connected inside the mounting component 3 via a bearing. A connecting pipe 32 is fixed to the lower end of the water wheel 31. A fixed bearing 33 embedded in the mounting component 3 is fitted on the outer surface of the connecting pipe 32. A through hole 34 communicating with the mounting component 3 is opened on the outer wall of the connecting pipe 32.

[0035] Specifically, the lower end of the connecting pipe 32 is symmetrically connected to four connectors 35, and the lower ends of the four connectors 35 are equidistantly connected to several spray heads 36.

[0036] Furthermore, after water enters the mounting component 3, it will drive the water wheel 31 to rotate. The rotation of the water wheel 31 will drive the connecting pipe 32 to rotate, and the connecting component 35 will be driven to rotate by the connecting pipe 32, so that the spray head 36 can spray water evenly, thereby improving the water washing effect.

[0037] Specifically, one side of the mounting component 3 is connected to a delivery pipe 37, and the end of the delivery pipe 37 is connected to a high-pressure water pump 38.

[0038] Furthermore, the high-pressure water pump 38 is installed to extract the water stored at the bottom of the equipment casing 1 and deliver it to the mounting component 3 through the delivery pipe 37.

[0039] Specifically, the input end of the high-pressure water pump 38 is connected to a filter element 4, and a fine filter screen 5 is installed vertically inside the filter element 4. Both ends of the fine filter screen 5 are fixed with connecting blocks 6 that are inserted and connected to the filter element 4.

[0040] Furthermore, during water circulation, the fine filter screen 5 can filter out smaller impurities in the water, thereby reducing the possibility of blockages in subsequent transport. The fine filter screen 5 can be pulled vertically by the connecting block 6 on the fine filter screen 5, thereby disassembling and replacing the fine filter screen 5.

[0041] In use, the equipment casing 1 is placed in a suitable position. The air inlet 2 on the casing 1 is connected to the output end of the SCU device via a pipe, allowing material to enter the casing 1. The high-pressure water pump 38 is started, drawing water stored at the bottom of the casing 1 and conveying it to the mounting component 3 via the conveying pipe 37. The water has a certain pressure during conveying, causing the water to enter the mounting component 3 and drive the water wheel 31 to rotate. The rotation of the water wheel 31 drives the connecting pipe 32 to rotate, and the fixed bearing 33 ensures the smooth rotation of the connecting pipe 32. Furthermore, the connecting pipe 32 has a passage... The hole 34 allows water to enter the connecting pipe 32 through the through hole 34, then flow to the four connecting parts 35, and then be sprayed out through the spray head 36. At this time, the connecting parts 35 are driven to rotate by the connecting pipe 32, so that the spray head 36 can spray water evenly, thereby improving the water washing effect and improving practicality. In addition, the fine filter screen 5 set in the filter element 4 can filter out small impurities in the water during water circulation, thereby reducing the possibility of blockage in subsequent transportation. The fine filter screen 5 can be pulled vertically through the connecting block 6 set on the fine filter screen 5, thereby disassembling and replacing the fine filter screen 5.

[0042] In summary, the water used in the methanol-to-low-carbon olefins equipment has a certain water pressure during transportation, which drives the water wheel 31 to rotate after the water enters the mounting part 3. The rotation of the water wheel 31 drives the connecting pipe 32 to rotate, and then sprays it out through the spray head 36. The connecting part 35 is driven to rotate by the connecting pipe 32, so that the spray head 36 can spray water evenly, thereby improving the water washing effect.

[0043] Example 2:

[0044] Please see Figures 1-6 This is the second embodiment of the present utility model.

[0045] Specifically, the filtration mechanism includes a coarse filter screen 7, which is detachably installed on the inner wall of the equipment housing 1. A first packing layer 71, which is detachably connected to the equipment housing 1, is provided above the coarse filter screen 7.

[0046] Furthermore, the material entering the equipment housing 1 will be processed through the first filler layer 71 and the second filler layer 72, and then washed with sprayed water.

[0047] Specifically, a second packing layer 72 is provided above the first packing layer 71 and is detachably connected to the equipment housing 1, and a demister 73 is provided above the second packing layer 72 and is fixedly connected to the equipment housing 1.

[0048] Furthermore, the demister 73 is made of multiple wire meshes and blades welded together. When the gas containing droplets passes through the demister 73 at a certain speed, the droplets deviate from the airflow direction due to inertia, collide with the surface of the demister 73 and are captured, thus achieving the function of demisting.

[0049] Specifically, the outer wall of the equipment housing 1 is hinged with two maintenance doors 74 corresponding to the first packing layer 71 and the second packing layer 72, and the upper surface of the equipment housing 1 is connected to an exhaust pipe 8.

[0050] Furthermore, by opening the maintenance door 74, the packing inside the first packing layer 71 or the second packing layer 72 can be replaced.

[0051] In use, materials entering the equipment housing 1 are processed through the first packing layer 71 and the second packing layer 72, and then washed with sprayed water. The washed materials are then demisted by the demister 73, which is made of multiple wire meshes and welded blades. When gas containing droplets passes through the demister 73 at a certain speed, the droplets deviate from the airflow direction due to inertia, collide with the surface of the demister 73 and are captured, thus achieving the demisting effect. The material is then discharged through the exhaust pipe 8 for further processing. The sprayed water flows down through the first packing layer 71 and the second packing layer 72. When the water passes through the coarse filter screen 7, it can filter out larger impurities in the water. The water then enters the bottom of the equipment housing 1 for recycling. By opening the maintenance door 74, the packing material inside the first packing layer 71 or the second packing layer 72 can be replaced.

[0052] In summary, the water used in the methanol-to-low-carbon olefins equipment has a certain water pressure during transportation, which drives the water wheel 31 to rotate after entering the mounting part 3. The rotation of the water wheel 31 drives the connecting pipe 32 to rotate, and then sprays it out through the spray head 36. The connecting part 35 is driven to rotate by the connecting pipe 32, so that the spray head 36 can spray water evenly, thereby improving the water washing effect. In addition, when the water is circulating, the fine filter screen 5 can filter out small impurities in the water, thereby reducing the possibility of blockage in subsequent transportation. Through the connecting block 6 set on the fine filter screen 5, the fine filter screen 5 can be pulled vertically, thereby disassembling and replacing the fine filter screen 5.

[0053] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0054] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0055] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A plant for the conversion of methanol to light olefins, comprising a plant shell (1), characterized in that: The outer wall of the device housing (1) is connected to an air inlet (2), the upper part of the inside of the device housing (1) is provided with a water spraying mechanism for spraying water, and the inner wall of the device housing (1) is provided with a filtration mechanism for filtration. The water spraying mechanism includes a mounting component (3), which is fixed to the upper end inside the equipment housing (1). A water wheel (31) is rotatably connected inside the mounting component (3) via a bearing. A connecting pipe (32) is fixed to the lower end of the water wheel (31). A fixed bearing (33) embedded in the mounting component (3) is fitted on the outer surface of the connecting pipe (32). A through hole (34) communicating with the mounting component (3) is opened on the outer wall of the connecting pipe (32).

2. The apparatus for converting methanol to light olefins according to claim 1, wherein: The lower end of the connecting pipe (32) is symmetrically connected to four connectors (35), and the lower ends of the four connectors (35) are equidistantly connected to several spray heads (36).

3. The apparatus for converting methanol to light olefins according to claim 2, wherein: One side of the mounting component (3) is connected to a delivery pipe (37), and the end of the delivery pipe (37) is connected to a high-pressure water pump (38).

4. The apparatus for converting methanol to light olefins according to claim 3, wherein: The input end of the high-pressure water pump (38) is connected to a filter element (4), and a fine filter screen (5) is installed vertically inside the filter element (4).

5. The apparatus for converting methanol to light olefins according to claim 4, wherein: Both ends of the fine filter screen (5) are fixed with connecting blocks (6) that are plugged into and connected to the filter element (4).

6. The apparatus for converting methanol to light olefins according to claim 5, wherein: The filtration mechanism includes a coarse filter screen (7), which is detachably installed on the inner wall of the equipment housing (1).

7. The apparatus for converting methanol to light olefins according to claim 6, wherein: The coarse filter screen (7) is provided with a first filler layer (71) that is detachably connected to the equipment housing (1) above it.

8. The apparatus for converting methanol to light olefins according to claim 7, wherein: A second packing layer (72) is provided above the first packing layer (71) and is detachably connected to the equipment housing (1).

9. The apparatus for converting methanol to light olefins according to claim 8, wherein: A demister (73) is provided above the second packing layer (72) and is fixedly connected to the equipment housing (1).

10. The apparatus for converting methanol to light olefins according to claim 9, wherein: The outer wall of the equipment housing (1) is hinged with two maintenance doors (74) corresponding to the first packing layer (71) and the second packing layer (72), and the upper surface of the equipment housing (1) is connected to an exhaust pipe (8).

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