Ammonia removal equipment for hydrocyanic acid

Abstract

The utility model discloses ammonia removal equipment for hydrocyanic acid, relates to the technical field of chemical equipment, and can solve the problem that foam in a filler frame cannot be scraped at present. The ammonia removal equipment for hydrocyanic acid comprises a tower body of which the bottom is provided with a hydrocyanic acid synthesis gas inlet and the top is provided with a hydrocyanic acid gas outlet, and at least one filler frame main body arranged between the gas inlet and the gas outlet, the packing frame body comprises a connecting structure and a plurality of annular packing frames which are distributed at intervals in a layered mode in the axial direction of the packing frame body, the annular packing frames are fixedly connected with the connecting structure, each annular packing frame comprises a plurality of annular packing units, the sizes of the annular packing units are decreased progressively, the annular packing units are coaxially arranged in a nested mode, and annular gaps are formed between the adjacent annular packing units in the radial direction. The material scraping structure is used for scraping foam on the upper and lower end surfaces of the filler frame main body and the inner and outer peripheral wall surfaces of the annular filler units, is arranged in the tower body and is movably connected with the annular filler units.

Description

TECHNICAL FIELD

[0001] The utility model relates to a technical field of chemical equipment, concretely relates to a device for removing ammonia from hydrocyanic acid. BACKGROUND

[0002] In the synthesis method of hydrocyanic acid, the unreacted ammonia gas in the hydrocyanic acid synthesis gas needs to be removed. Currently, the hydrocyanic acid synthesis gas is usually introduced into an ammonia removal tower, and the ammonia gas is removed by neutralization with an acidic liquid. However, in the prior art, foam appears on the packing support inside the ammonia removal tower, which affects the flow of the hydrocyanic acid synthesis gas and the removal effect of the ammonia gas.

[0003] To solve the above problems, the present patent number CN202311738863.4, the invention patent with the patent name of an ammonia removal device for hydrocyanic acid production and process. To solve the above problems, the driving mechanism drives the rotation of the shaft, and then the scraper on the shaft scrapes along the wall surface of the packing support, which can avoid the influence of foam on the normal conduction of the gap between the packing supports. However, in the technical concept, the scraper can only remove the foam on the surface of the packing support, and cannot remove the foam inside the packing support.

[0004] Therefore, it is necessary to design a device for removing ammonia from hydrocyanic acid to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a device for removing ammonia from hydrocyanic acid, which solves the problem that the current scraper and packing support design cannot remove the foam inside the packing support.

[0006] To solve the above technical problems, the utility model adopts the following scheme:

[0007] The present application provides a device for removing ammonia from hydrocyanic acid, which comprises a tower body provided with a hydrocyanic acid synthesis gas inlet at the bottom and a hydrocyanic acid gas outlet at the top, and at least one packing support main body arranged between the gas inlet and the gas outlet, the packing support main body comprising:

[0008] A connecting structure and a plurality of circular ring packing supports arranged in layers along the axial direction, the circular ring packing supports are fixedly connected with the connecting structure, wherein:

[0009] Each circular ring packing support comprises a plurality of circular ring packing units arranged in size decreasing and coaxial nesting, and has a circular ring gap between the radially adjacent circular ring packing units;

[0010] Further comprising a scraper structure for scraping the foam on the upper and lower end faces of the packing support main body and the inner and outer peripheral wall surfaces of the circular ring packing units, the scraper structure is arranged in the tower body and is movably connected with the circular ring packing units.

[0011] Optionally, the connecting structure comprises a hollow connecting cylinder located at the innermost side of the plurality of circular ring-shaped packing supports, and at least two partition connecting plates arranged radially along the connecting cylinder;

[0012] The partition connecting plates are arranged radially through the circular ring-shaped packing units of the circular ring-shaped packing support, and partition the circular ring-shaped gaps between the plurality of adjacent circular ring-shaped packing units into fan-shaped gap holes.

[0013] The scraping structure comprises end face scraping plates for scraping the foam on the upper and lower end faces of the packing support body, and side wall scraping plates for scraping the foam on the inner and outer peripheral wall surfaces of the circular ring-shaped packing units.

[0014] Optionally, the scraping structure further comprises a connecting shaft cylinder located in the connecting cylinder and movably connected thereto.

[0015] The end face scraping plates are arranged radially along the connecting shaft cylinder, and at least two end face scraping plates are arranged on the upper and lower end faces of the packing support body, respectively.

[0016] The side wall scraping plates are arranged axially along the connecting shaft cylinder, the number of the side wall scraping plates is the same as the number of the fan-shaped gap holes, the side wall scraping plates are fixedly connected with the end face scraping plates and arranged in the fan-shaped gap holes, and the radial width of the side wall scraping plates along the connecting shaft cylinder is equal to the gap width of the fan-shaped gap holes.

[0017] Optionally, the partition connecting plates are arranged in two, and the two partition connecting plates are located on opposite sides of the connecting cylinder, respectively.

[0018] The central angle range of the arc where the fan-shaped gap hole is located is 170° to 180°.

[0019] Optionally, the circular ring-shaped gaps between the adjacent circular ring-shaped packing supports are arranged radially in a staggered manner.

[0020] The scraping structure further comprises a connecting rod for connecting the side wall scraping plates.

[0021] Optionally, the circular ring-shaped packing supports arranged axially along the packing support body are arranged in 3 or 4 layers.

[0022] Optionally, the width of the connecting rod along the axis of the connecting shaft cylinder is equal to the gap width between the adjacent circular ring-shaped packing supports.

[0023] Optionally, the scraping structure further comprises a forward and reverse motor arranged at the top of the tower body, and a rotating shaft arranged in the connecting shaft cylinder and fixedly connected thereto, the top end of the rotating shaft is in transmission connection with the output shaft of the forward and reverse motor.

[0024] Further comprising a mounting bracket located below the packing support body, and the end of the rotating shaft away from the forward and reverse motor is mounted on the mounting bracket.

[0025] Optionally, the filler holder body is provided with two, the structures of the two filler holder bodies are same and are distributed up and down along the axial direction.

[0026] The acid spraying structure is arranged directly above the filler holder.

[0027] The acid spraying structure comprises a plurality of spray heads arranged at the upper end of the filler holder body.

[0028] The beneficial effects of the present application are as follows:

[0029] The design concept of the present application is to redesign the filler holder body and the scraping structure, so that the filler holder has multiple gaps in the axial and radial directions, and the scraping structure can scrape the foam from the multiple gaps in the radial and axial directions of the filler holder body, thereby effectively solving the problem that the foam in the filler holder body cannot be scraped in the prior art, which affects the flow of hydrogen cyanide synthesis gas. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The structure of the embodiment of the present application is shown.

[0031] Figure 2 The structure of the single-layer filler holder in the embodiment of the present application is shown.

[0032] Figure 3 The structure of the scraping structure in the embodiment of the present application is shown.

[0033] The reference signs are as follows: 1-tower body, 11-inlet, 12-outlet, 13-liquid outlet, 14-mounting bracket, 21-forward and reverse motor, 22-rotating shaft, 23-scraping structure, 231-end face scraper, 232-side wall scraper, 233-connecting rod, 234-connecting shaft cylinder, 3-filler holder body, 31-circular ring filler holder, 311-circular ring filler unit, 32-connecting structure, 321-separation connecting plate, 322-connecting cylinder, 323-mounting hole, 33-fan ring gap hole, 4-acid spraying structure, 41-spray head. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below in combination with the embodiments and the drawings, but the implementation mode of the present application is not limited thereto.

[0035] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "internal", "external", "front", "back", "top", "bottom" and so on indicate the orientation or position relationship based on the orientation or position relationship shown in the drawing, or the orientation or position relationship of the utility model product when it is usually placed, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation of the utility model.

[0036] In the description of the utility model, it also needs to explain that, unless otherwise specified and limited, the terms "set", "open", "install", "connect", "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] The utility model will be described in detail below by referring to the drawings and combining with the embodiments.

[0038] As Figures 1 to 3 shown, the embodiment provides a kind of for hydrocyanic acid ammonia removal equipment, including the bottom of the hydrogen cyanide synthesis gas inlet 11, and the top of the hydrogen cyanide gas outlet 12 of tower body 1, it also includes at least one setting in the gas inlet 11 and the packing frame main body 3 of gas outlet 12, packing frame main body 3 includes:

[0039] Connecting structure 32 and multiple circular ring packing frames 31 distributed in the axial stratified interval, annular packing frame is fixedly connected with connecting structure 32, wherein:

[0040] Each circular ring packing frame 31 includes multiple circular ring packing units 311 of size decreasing and coaxially nested setting, and circular ring gap between radially adjacent circular ring packing units 311;

[0041] It also includes the scraping structure 23 for scraping the foam on the upper and lower end surfaces of packing frame main body 3 and circular ring packing unit 311 inner and outer peripheral wall surface, scraping structure 23 is set in tower body 1, and is movably connected with circular ring packing unit 311.

[0042] The embodiment re-designs the packing frame body 3 and the scraping structure 23, so that the packing frame has multiple gaps in the axial and radial directions, and the scraping structure 23 can scrape the foam from the multiple gaps in the axial and radial directions of the packing frame body 3, thereby effectively solving the problem that the foam in the packing frame body 3 affects the flow of the hydrogen cyanide synthesis gas.

[0043] Specifically, in the embodiment, as shown in Figure 1 and Figure 3 The connecting structure 32 includes a hollow connecting cylinder 322 located at the innermost side of the multiple circular packing frames 31, and at least two partition connecting plates 321 arranged radially along the connecting cylinder 322.

[0044] The partition connecting plate 321 is arranged along the radial direction through the circular packing unit 311 of the circular packing frame 31, and partitions the circular gap between the multiple adjacent circular packing units 311 into a fan-shaped gap hole 33.

[0045] The scraping structure 23 includes an end face scraper 231 for scraping the foam on the upper and lower end faces of the packing frame body 3, and a side wall scraper 232 for scraping the foam on the inner and outer circumferential wall surfaces of the circular packing unit 311. The end face scraper 231 in the embodiment can scrape the foam on the upper and lower end faces of the packing frame body 3, and because the circular packing units 311 have the fan-shaped gap hole 33 therebetween, the side wall scraper 232 of the scraping structure 23 can scrape the foam on the inner and outer circumferential wall surfaces of the circular packing unit 311. Compared with the original design, the scraping of the foam no longer stops on the surface, but penetrates into the interior of the packing frame body 3, and the scraping effect of the foam is good.

[0046] Specifically, in the embodiment, as shown in Figure 3 The scraping structure 23 further includes a connecting shaft cylinder 234 located in the connecting cylinder 322 and movably connected thereto.

[0047] The end face scraper 231 is arranged along the radial direction of the connecting shaft cylinder 234, and the end face scraper 231 is provided with at least two end face scrapers 231 arranged on the upper and lower end faces of the packing frame body 3, respectively. By arranging the connecting shaft cylinder 234, multiple end face scrapers 231 can be connected as a whole, which facilitates overall driving.

[0048] The side wall scrapers 232 are arranged along the axial direction of the connecting shaft cylinder 234, the number of the side wall scrapers 232 is the same as the number of the fan-shaped annular gap holes 33, the side wall scrapers 232 are fixedly connected with the end face scrapers 231 and arranged in the fan-shaped annular gap holes 33, and the radial width of the side wall scrapers 232 along the connecting shaft cylinder 234 is equal to the gap width of the fan-shaped annular gap holes 33, so that the side wall scrapers 232 can simultaneously scrape the inner and outer side walls of two adjacent circular ring-shaped filler units 311, thereby reducing the complexity of the structure and improving the scraping efficiency and effect of the foam

[0049] Specifically, in the embodiment, as shown in Figure 2 The partition connecting plates 321 are arranged on the opposite sides of the connecting cylinder 322.

[0050] The circular arc where the fan-shaped annular gap hole 33 is located corresponds to a central angle range of 170° to 180°. By arranging the partition connecting plates 321, the multiple circular ring-shaped filler frames 31 and the connecting cylinder 322 can be connected into a whole, facilitating installation, disassembly and maintenance operation.

[0051] Specifically, in the embodiment, as shown in Figure 3 The circular ring-shaped gaps between the adjacent circular ring-shaped filler frames 31 are arranged in a radial staggered manner.

[0052] The scraping structure 23 further comprises a connecting rod 233 for connecting the side wall scrapers 232. By arranging the connecting rod 233, when the circular ring-shaped gaps between the adjacent upper and lower circular ring-shaped filler frames 31 are arranged in a radial staggered manner, the connecting rod 233 can connect the side wall scrapers 232 into a whole, thereby improving the structural strength of the scraping structure 23.

[0053] Specifically, in the embodiment, the circular ring-shaped filler frames 31 arranged along the axial direction of the filler frame body 3 are arranged in 3 or 4 layers. In the embodiment, the number of the circular ring-shaped filler frames 31 of the filler frame body 3 is 3, and in some embodiments, the number can be 4, 5, 6 or other numbers, which can be arranged as needed.

[0054] Specifically, in the embodiment, the width of the connecting rod 233 along the axial direction of the connecting shaft cylinder 234 is equal to the gap width between the adjacent circular ring-shaped filler frames 31. In the embodiment, as shown in Figure 1 and Figure 3 The connecting rod 233 is arranged along the radial direction of the connecting shaft cylinder 234, and through the width design, it can bear a part of the function of the scraper and scrape the foam at the upper and lower ends of the circular ring-shaped filler frames 31 inside the filler frame.

[0055] Specifically, in the embodiment, the scraping structure 23 further comprises a forward-reverse motor 21 arranged at the top of the tower body 1, and a rotating shaft 22 arranged in the connecting shaft cylinder 234 and fixedly connected with the connecting shaft cylinder 234, the top end of the rotating shaft 22 is in transmission connection with the output shaft of the forward-reverse motor 21.

[0056] The mounting frame 14 is arranged below the filler support body 3, the end of the rotating shaft 22 away from the forward-reverse motor 21 is mounted on the mounting frame 14, the maximum angle of single rotation of the forward-reverse motor 21 is the same as the central angle of the arc corresponding to the circular-arc gap, specifically, in the embodiment, the single rotation angle of the forward-reverse motor 21 is 175°.

[0057] Specifically, in the embodiment, the filler support body 3 is arranged in two, the two filler support bodies 3 are the same in structure and are distributed in the axial direction.

[0058] The acid spraying structure 4 is arranged directly above the filler support.

[0059] The acid spraying structure 4 comprises a plurality of nozzles 41 arranged on the upper end of the filler support body 3.

[0060] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the present application, and the present application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present application, and these modifications and improvements are also regarded as the protection scope of the present application.

Claims

1. A device for removing ammonia from hydrocyanic acid, comprising a tower body (1) with a hydrocyanic acid synthesis gas inlet (11) at the bottom and a hydrocyanic acid gas outlet (12) at the top, characterized in that: It also includes at least one filler frame body (3) disposed between the air inlet (11) and the air outlet (12), the filler frame body (3) including: The connecting structure (32) and a plurality of annular packing racks (31) spaced apart and distributed in layers along the axial direction thereof, wherein the annular packing racks are all fixedly connected to the connecting structure (32), wherein: Each annular packing frame (31) comprises a plurality of annular packing units (311) of decreasing size and coaxially nested, with annular gaps being provided between radially adjacent annular packing units (311); It also includes a scraping structure (23) for scraping foam from the upper and lower end surfaces of the filler frame body (3) and the inner and outer peripheral walls of the annular filler unit (311). The scraping structure (23) is arranged in the tower body (1) and is movably connected to the annular filler unit (311).

2. The device for removing ammonia from hydrocyanic acid according to claim 1, characterized in that: The connecting structure (32) comprises a hollow connecting cylinder (322) located at the innermost side of the plurality of annular filler racks (31), and at least two partition connecting plates (321) arranged radially along the connecting cylinder (322); The partition connecting plate (321) is arranged to radially penetrate the annular packing unit (311) of the annular packing frame (31), and partition the annular gaps between a plurality of adjacent annular packing units (311) into fan-shaped annular gap holes (33); The scraping structure (23) comprises end scrapers (231) for scraping foam from the upper and lower end surfaces of the filler frame body (3), and side wall scrapers (232) for scraping foam from the inner and outer peripheral wall surfaces of the annular filler unit (311).

3. A device for removing ammonia from hydrocyanic acid according to claim 2, characterized in that: The scraper structure (23) further includes a connecting shaft cylinder (234) located in the connecting cylinder (322) and movably connected thereto; The end scraper (231) is arranged along the radial direction of the connecting shaft cylinder (234), and at least two end scrapers (231) are provided. The two end scrapers (231) are respectively arranged on the upper and lower end surfaces of the filler frame body (3); The side wall scrapers (232) are arranged along the axial direction of the connecting shaft cylinder (234), the number of the side wall scrapers (232) is the same as the number of the fan annular gap holes (33), the side wall scrapers (232) are fixedly connected to the end face scrapers (231) and are arranged in the fan annular gap holes (33), and the width of the side wall scrapers (232) along the radial direction of the connecting shaft cylinder (234) is equal to the gap width of the fan annular gap holes (33).

4. The device for removing ammonia from hydrocyanic acid according to claim 2, characterized in that: Two partition connection plates (321) are provided, and the two partition connection plates (321) are respectively located on two opposite sides of the connection tube (322); The arc where the fan annular gap hole (33) is located corresponds to a central angle range of 170° to 180°.

5. The device for removing ammonia from hydrocyanic acid according to claim 3, characterized in that: The annular gaps between adjacent annular filler frames (31) are staggered in the radial direction; The scraper structure (23) further comprises a connecting rod (233) for connecting to the side wall scraper (232).

6. The device for removing ammonia from hydrocyanic acid according to claim 5, characterized in that: The annular filling frame (31) arranged along the axial direction of the filling frame main body (3) is provided with three or four layers.

7. The device for removing ammonia from hydrocyanic acid according to claim 5, characterized in that: The width of the connecting rod (233) along the axial direction of the connecting shaft cylinder (234) is equal to the gap width between adjacent annular filler frames (31).

8. The device for removing ammonia from hydrocyanic acid according to claim 3, characterized in that: The scraper structure (23) further includes a forward and reverse motor (21) disposed on the top of the tower body (1), and a rotating shaft (22) disposed in and fixedly connected to the connecting shaft cylinder (234), wherein the top end of the rotating shaft (22) is drivingly connected to the output shaft of the forward and reverse motor (21); It also includes a mounting frame (14) located below the filler frame body (3), and one end of the rotating shaft (22) away from the forward and reverse motor (21) is mounted on the mounting frame (14).

9. The device for removing ammonia from hydrocyanic acid according to claim 1, characterized in that: Two filling frame main bodies (3) are provided, and the two filling frame main bodies (3) have the same structure and are distributed vertically along the axial direction; It also includes an acid spraying structure (4) arranged directly above the filler frame; The acid spraying structure (4) comprises a plurality of spray heads (41) with spray ports facing the upper end of the filler frame body (3).

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