Material filtering equipment for processing methyl carbamate

Abstract

The utility model mainly relates to the field of filtering equipment, and provides material filtering equipment for processing methyl carbamate, which structurally comprises a kettle body, an annular seat is fixedly connected to the top of the inner wall of the kettle body through bolts, and a conical filtering sleeve is fixedly arranged at the bottom of the annular seat. An auxiliary conical sleeve is fixedly connected to the middle of the top end of the conical filter sleeve through a bolt, and a connecting pipe is inserted into the top of the auxiliary conical sleeve; a material pumping pipe is fixedly arranged at the input end of the material pumping pump, an extension pipe is fixedly arranged at one end of the material pumping pipe, a solid-liquid mixture enters the auxiliary conical sleeve, and a solid catalyst at the bottom of the auxiliary conical sleeve is squeezed into a filtering area between the conical filtering sleeve and the auxiliary conical sleeve to be continuously filtered due to the accumulation weight of materials in the auxiliary conical sleeve; at the moment, the solid catalyst pushed to be close to the upper part of the conical filtering sleeve is basically filtered, and is pumped out through equipment such as a material pump, so that dynamic continuous filtering operation of the solid catalyst by the equipment is realized.

Description

Technical Field

[0001] This utility model mainly relates to the field of filtration equipment, specifically to a material filtration device for methyl carbamate processing. Background Technology

[0002] In the synthesis process of methyl carbamate, the solution after the reaction contains a large amount of unreacted solid catalyst. It is necessary to separate this solid catalyst from the liquid product. Generally, a filter press or centrifuge is considered for separation. Considering that the synthesis process is a continuous production stage, a filter press is selected as the continuous filtration equipment. To avoid clogging of the filter press by the solid catalyst, it is planned to install a pre-filtration device before the filtration process unit of the filter press to pre-filter the larger solid catalyst.

[0003] The inventors have proposed a material filtration device for methyl carbamate processing. The device consists of a conical filter sleeve, an auxiliary conical sleeve, and a connecting pipe inside the reactor. The sandwich structure design facilitates the filtration of solid catalysts during solid-liquid separation. The filtered solid catalysts below the auxiliary conical sleeve are pushed between the conical filter sleeve and the auxiliary conical sleeve. With the help of a pump and other equipment, the filtered solid catalysts are pumped out for further processing, thus achieving dynamic and continuous filtration of solid catalysts. Utility Model Content

[0004] 1. The problem that the utility model aims to solve:

[0005] This invention provides a material filtration device for methyl carbamate processing, which solves the design goal of achieving dynamic and continuous operation in existing methyl carbamate solid catalyst filtration mentioned in the background art.

[0006] 2. Technical Solution:

[0007] To achieve the above objectives, the technical solution provided by this utility model is: a material filtration device for methyl carbamate processing, comprising the following structure:

[0008] The vessel body has an inner wall top fixedly connected to a ring seat by bolts. A conical filter sleeve is fixedly provided at the bottom of the ring seat. An auxiliary conical sleeve is fixedly connected to the top center of the conical filter sleeve by bolts. A connecting pipe is inserted into the top of the auxiliary conical sleeve. One end of the connecting pipe extends to the inner side of the top of the conical filter sleeve.

[0009] A material pump, wherein a material pumping pipe is fixedly provided at the input end of the material pumping pump, and an extension pipe is fixedly provided at one end of the material pumping pipe, wherein the inlet port of the extension pipe extends to the top inner side of the conical filter sleeve.

[0010] Furthermore, the top and bottom of the vessel body are respectively provided with a feed hole and a drain hole, the top of the vessel body is provided with a discharge hole that cooperates with the extension pipe, the vessel body is a split structure, the interface of the upper and lower structures is located above the connection between the ring seat and the vessel body, and the top of the vessel body is provided with a vent hole.

[0011] Furthermore, a positioning ring is detachably snapped onto the bottom of the conical filter sleeve, and a perforated partition filter plate is detachably snapped onto the top of the positioning ring. A second filter hole is fixedly provided on the middle and outer sides of the bottom surface of the perforated partition filter plate, and the bottom of the inner wall of the perforated partition filter plate is 27 mm to 42 mm away from the bottom outlet of the auxiliary conical sleeve.

[0012] Furthermore, the bottom outlet of the conical filter sleeve faces the drain hole, and the conical filter sleeve is fixed with a first filter hole from the middle to the bottom.

[0013] Furthermore, a filter cavity is formed between the outer side of the auxiliary conical sleeve and the inner side of the conical filter sleeve. This filter cavity cooperates with the feed port of the extension tube, and the bottom opening of the auxiliary conical sleeve faces upward towards the second filter hole.

[0014] Furthermore, the outer side of the auxiliary conical sleeve is movably sleeved with the outer side of the extension tube, and the bottom of the auxiliary conical sleeve extends to the top inner side of the perforated partition filter plate.

[0015] Furthermore, it also includes a frame, in which multiple nitrogen storage cylinders are detachably snapped together. A solenoid valve is fixedly installed at the air port of each nitrogen storage cylinder. An air filling pipe for the air compressor is fixedly installed at the input end of the solenoid valve, and an air delivery pipe is fixedly installed at the output end of the solenoid valve.

[0016] Furthermore, a cover is snapped into the middle of the positioning ring, and a gas collecting pipe is detachably snapped into the bottom of the cover. The air inlet of the gas collecting pipe is fixedly connected to the air outlet of the air supply pipe. Multiple branch air pipes are fixedly provided on the outside of the gas collecting pipe. One-way valves are fixedly provided at one end of each branch air pipe. The outside of the one-way valve is detachably snapped into the top of the positioning ring. The output end of the one-way valve passes through the bottom to the top of the perforated partition filter plate, and the output port of the one-way valve faces the filter chamber.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0019] This invention provides a material filtration device for methyl carbamate processing. The solid-liquid mixture enters the auxiliary conical sleeve. Due to the weight of the material accumulation inside the auxiliary conical sleeve, the solid catalyst at the bottom of the auxiliary conical sleeve is squeezed into the filtration zone between the conical filter sleeve and the auxiliary conical sleeve for further filtration. At this time, the solid catalyst pushed close to the top of the conical filter sleeve is basically filtered and is extracted by a pump or other equipment, realizing the dynamic continuous filtration operation of the solid catalyst in this device.

[0020] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0021] Figure 1 This is a perspective view of the novel structure of this utility model;

[0022] Figure 2 This is a half-sectional perspective view of the novel vessel structure of this utility model;

[0023] Figure 3 This is an exploded view of the novel conical filter sleeve structure of this utility model;

[0024] Figure 4 This is an exploded view of the novel auxiliary conical sleeve structure of this utility model;

[0025] Figure 5 This is a half-sectional perspective view of the novel vessel structure of this utility model;

[0026] Figure 6 This is a perspective view of the novel frame structure of this utility model.

[0027] Figure label:

[0028] Kettle body-1; Inlet port-11; Drain port-12; Discharge port-13;

[0029] Ring seat-2;

[0030] Conical filter sleeve-3; Positioning ring-31; Perforated partition filter plate-32;

[0031] Auxiliary conical sleeve-4; connecting pipe-41;

[0032] Pump-5; Pump pipe-51; Extension pipe-52;

[0033] Frame-6; Nitrogen storage cylinder-61; Solenoid valve-62; Filling pipe-63; Gas supply pipe-64;

[0034] Casing-7; Gas collection pipe-71; Branch gas pipe-72; One-way valve-73. Detailed Implementation

[0035] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0038] Reference Figure 1-6 A material filtration device for processing methyl carbamate, comprising the following structure:

[0039] The vessel body 1 has a ring seat 2 fixedly connected to the top of its inner wall by bolts. A conical filter sleeve 3 is fixedly provided at the bottom of the ring seat 2. An auxiliary conical sleeve 4 is fixedly connected to the middle of the top of the conical filter sleeve 3 by bolts. A connecting pipe 41 is inserted into the top of the auxiliary conical sleeve 4. One end of the connecting pipe 41 extends to the inner side of the top of the conical filter sleeve 3.

[0040] The pump 5 has a pump pipe 51 fixed at its input end. One end of the pump pipe 51 is fixed with an extension pipe 52. The feed port of the extension pipe 52 extends to the top inner side of the conical filter sleeve 3.

[0041] In this embodiment, the top and bottom of the vessel body 1 are respectively provided with a feed hole 11 and a drain hole 12. The top of the vessel body 1 is provided with a discharge hole 13 that cooperates with the extension pipe 52. The vessel body 1 is a split structure with the upper and lower parts connected above the connection between the ring seat 2 and the vessel body 1. The top of the vessel body 1 is provided with a vent hole.

[0042] The feed port 11 is connected to the pipeline in the workshop to guide the solid-liquid mixture in the methyl carbamate synthesis reactor into the reactor body 1 of this equipment. The discharge port 13 is used for the assembly of the pump 5 and the pipeline. The pump 5, the pump pipe and the extension pipe 52 work together to extract the filtered solid catalyst from the filter chamber and send it to the next process. The drain port 12 of the reactor body 1 discharges the filtered liquid from the solid-liquid mixture.

[0043] The conical filter sleeve 3 is assembled inside the vessel body 1 via the ring seat 2 to filter the solid-liquid mixture. An auxiliary conical sleeve 4 and a perforated partition filter plate 32 are added to the middle of the conical filter sleeve 3 to filter the solid-liquid mixture. Due to the weight of the material accumulation inside the auxiliary conical sleeve 4, the solid catalyst at the bottom of the auxiliary conical sleeve 4 is squeezed into the filtration zone between the conical filter sleeve 3 and the auxiliary conical sleeve 4 for further filtration. At this time, the solid catalyst pushed close to the top of the conical filter sleeve 3 is basically filtered and is extracted by the pump 5 and other equipment to realize the dynamic continuous filtration operation of the solid catalyst in this equipment.

[0044] In this embodiment, a positioning ring 31 is detachably snapped onto the bottom of the conical filter sleeve 3, and a perforated partition filter plate 32 is detachably snapped onto the top of the positioning ring 31. A second filter hole is fixedly provided on the middle and outer sides of the bottom surface of the perforated partition filter plate 32, and the bottom of the inner wall of the perforated partition filter plate 32 is 27 mm to 42 mm away from the bottom outlet of the auxiliary conical sleeve 4.

[0045] The positioning ring 31 provides installation support for the perforated partition filter plate 32 to be assembled in the conical filter sleeve 3. The distance between the perforated partition filter plate 32 and the auxiliary conical sleeve 4 should not be set too large to avoid the solid catalyst that has not been filtered directly entering the filter chamber and being discharged by the pump 5.

[0046] The second filter hole design on the perforated partition filter plate 32 facilitates the filtration of the solid-liquid mixture docked inside the conical sleeve 4. Filtration is achieved by the compression of the solid-liquid mixture by its own weight, avoiding the reduction of the structural strength of the solid catalyst caused by the shear force of mechanical equipment stirring. At the same time, the solid catalyst inside the conical sleeve 4 is guided to the filter chamber of the conical filter sleeve 3. Before the pump 5 is started, the accumulated solid catalyst forms an angle of repose. After the pump 5 is started, the formation of the angle of repose is broken, and the filtered solid catalyst can be extracted.

[0047] In this embodiment, the bottom outlet of the conical filter sleeve 3 faces the drain hole 12. The conical filter sleeve 3 is fixed with a first filter hole from the middle to the bottom.

[0048] The conical filter sleeve 3 works in conjunction with the first filter hole to further filter the solid catalyst in the filter chamber.

[0049] In this embodiment, a filter cavity is formed between the outer side of the auxiliary conical sleeve 4 and the inner side of the conical filter sleeve 3. The filter cavity cooperates with the feed port of the extension tube 52, and the bottom opening of the auxiliary conical sleeve 4 faces upward towards the second filter hole.

[0050] After the solid catalyst accumulated in the filter chamber is pumped away by the pump 5, the solid catalyst accumulated in the auxiliary conical sleeve 4 is pushed into the filter chamber by the weight of the material accumulated above the auxiliary conical sleeve 4 to replenish and continue filtration.

[0051] The connecting pipe 41 cooperates with the auxiliary conical sleeve 4 to avoid the pressure difference between the upper and lower parts of the conical filter sleeve 3 and the auxiliary conical sleeve 4, which would affect the flow efficiency of the material.

[0052] In this embodiment, the outer side of the auxiliary conical sleeve 4 is movably sleeved with the outer side of the extension tube 52, and the bottom of the auxiliary conical sleeve 4 extends to the top inner side of the perforated partition filter plate 32.

[0053] The design of the auxiliary conical sleeve 4 and the perforated partition filter plate 32 completes the accumulation of solid catalyst above the perforated partition filter plate 32 and forms an angle of repose. The material pumping and dynamic continuous operation of this equipment disrupt this angle of repose, allowing the material in the auxiliary conical sleeve 4 to continuously flow into the filter chamber for filtration.

[0054] In this embodiment, a frame 6 is also included. Multiple nitrogen storage cylinders 61 are detachably snapped into the middle of the frame 6. A solenoid valve 62 is fixed at the air hole of the nitrogen storage cylinder 61. An air filling pipe 63 that works with an air compressor is fixed at the input end of the solenoid valve 62. An air delivery pipe 64 is fixed at the output end of the solenoid valve 62.

[0055] The nitrogen storage cylinder 61, the solenoid valve 62, and the filling pipe 63 work together to complete the filling process of the nitrogen storage cylinder 61. An air compressor can be configured or the gas line in the plant area can be used. The solenoid valve 62 and the gas supply pipe 64 work together to supply gas to the gas collection pipe 71.

[0056] In this embodiment, a cover 7 is snapped into the middle of the positioning ring 31, and a gas collecting pipe 71 is detachably snapped into the bottom of the cover 7. The air inlet of the gas collecting pipe 71 is fixedly connected to the air outlet of the air supply pipe 64. Multiple branch air pipes 72 are fixedly provided on the outside of the gas collecting pipe 71. One-way valves 73 are fixedly provided at one end of each branch air pipe 72. The outside of the one-way valve 73 is detachably snapped into the top of the positioning ring 31. The output end of the one-way valve 73 passes through the bottom to the top of the perforated partition filter plate 32, and the output port of the one-way valve 73 faces the filter chamber.

[0057] Nitrogen is the preferred gas source for purging operations because the solvent in the solid-liquid mixture is flammable, and nitrogen must be used to avoid safety accidents.

[0058] To improve the fluidity of the solid catalyst in the filter chamber and avoid the influence of mechanical structure on the strength of the solid catalyst, after the gas collecting pipe 71 receives the gas supply from the gas supply pipe 64, the branch gas pipe 72 and the one-way valve 73 cooperate to blow air into the filter chamber at the bottom of the perforated partition filter plate 32. This improves the fluidity of the solid catalyst at the bottom of the perforated partition filter plate 32, making it easier for the solid catalyst here to be sent into the filter chamber and then extracted from the reactor body 1 by the pump 5 for subsequent processing.

[0059] In this embodiment:

[0060] The feed port 11 is connected to the pipeline in the workshop to guide the solid-liquid mixture in the methyl carbamate synthesis reactor into the reactor body 1 of this equipment. The solid-liquid mixture enters the auxiliary conical sleeve 4. Due to the weight of the material accumulation in the auxiliary conical sleeve 4, the solid catalyst at the bottom of the auxiliary conical sleeve 4 is squeezed into the filtration zone between the conical filter sleeve 3 and the auxiliary conical sleeve 4 for further filtration. At this time, the solid catalyst pushed close to the top of the conical filter sleeve 3 is basically filtered and is extracted by the pump 5 and other equipment to realize the dynamic continuous filtration operation of the solid catalyst of this equipment.

[0061] The design of the auxiliary conical sleeve 4 and the perforated partition filter plate 32 completes the accumulation of solid catalyst above the perforated partition filter plate 32 and forms an angle of repose. After the pump 5 is started, it breaks the formation of the angle of repose and can extract the filtered solid catalyst.

[0062] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A filter apparatus for methyl carbamate process materials, characterized by: Includes the following structure: The vessel body (1) has an annular seat (2) fixedly connected to the top of its inner wall by bolts. A conical filter sleeve (3) is fixedly provided at the bottom of the annular seat (2). An auxiliary conical sleeve (4) is fixedly connected to the middle of the top of the conical filter sleeve (3) by bolts. A connecting pipe (41) is inserted into the top of the auxiliary conical sleeve (4). One end of the connecting pipe (41) extends to the inner side of the top of the conical filter sleeve (3). A material pump (5) is provided with a material pump pipe (51) at its input end. An extension pipe (52) is provided at one end of the material pump pipe (51). The feed port of the extension pipe (52) extends to the top inner side of the conical filter sleeve (3).

2. A filter apparatus for use in the processing of methyl carbamate materials as claimed in claim 1, wherein: The top and bottom of the vessel body (1) are respectively provided with a feed hole (11) and a drain hole (12). The top of the vessel body (1) is provided with a discharge hole (13) that cooperates with the extension pipe (52). The vessel body (1) is a split structure with the upper and lower parts connected above the connection between the ring seat (2) and the vessel body (1). The top of the vessel body (1) is provided with a vent hole.

3. A filter apparatus for use in the processing of methyl carbamate materials as defined in claim 1, wherein: The bottom of the conical filter sleeve (3) is detachably snapped with a positioning ring (31), and the top of the positioning ring (31) is detachably snapped with a perforated partition filter plate (32). The bottom center and outer side of the perforated partition filter plate (32) are respectively fixed with second filter holes. The bottom of the inner wall of the perforated partition filter plate (32) is 27 mm to 42 mm away from the bottom outlet of the auxiliary conical sleeve (4).

4. A filter apparatus for use in the processing of methyl carbamate materials as defined in claim 1, wherein: The bottom outlet of the conical filter sleeve (3) faces the drain hole (12). The conical filter sleeve (3) is fixed with a first filter hole from the middle to the bottom.

5. A filter apparatus for use in the processing of methyl carbamate materials as defined in claim 1, wherein: A filter cavity is formed between the outer side of the auxiliary conical sleeve (4) and the inner side of the conical filter sleeve (3). The filter cavity is matched with the feed port of the extension tube (52). The bottom opening of the auxiliary conical sleeve (4) faces upwards towards the second filter hole.

6. The material filtration device for methyl carbamate processing according to claim 1, characterized in that: The outer side of the auxiliary conical sleeve (4) is movably sleeved with the outer side of the extension tube (52), and the bottom of the auxiliary conical sleeve (4) extends to the top inner side of the perforated partition filter plate (32).

7. A filter apparatus for use in the processing of methyl carbamate materials as defined in claim 1, wherein: It also includes a frame (6), in which a plurality of nitrogen storage cylinders (61) are detachably snapped into the middle. A solenoid valve (62) is fixed at the air hole of the nitrogen storage cylinder (61). An air filling pipe (63) for the air compressor is fixed at the input end of the solenoid valve (62), and an air delivery pipe (64) is fixed at the output end of the solenoid valve (62).

8. A filter apparatus for use in the processing of methyl carbamate materials as defined in claim 3, wherein: The middle part of the positioning ring (31) is fitted with a cover (7), and the bottom of the cover (7) is detachably fitted with an air collecting pipe (71). The air inlet of the air collecting pipe (71) is fixedly connected to the air outlet of the air supply pipe (64). Multiple branch air pipes (72) are fixedly provided on the outside of the air collecting pipe (71). One-way valves (73) are fixedly provided at one end of the branch air pipes (72). The outside of the one-way valves (73) is detachably fitted with the top of the positioning ring (31). The output end of the one-way valves (73) passes through the bottom to the top of the perforated partition filter plate (32). The output port of the one-way valves (73) faces the filter chamber.

Images