Solution extraction device for recycling acetonitrile ammonia tail gas

Abstract

The utility model discloses a solution extraction device for recycling acetonitrile ammonia tail gas, and relates to the related technical field of organic chemical industry. The device comprises an extraction container, a mixed feeding cavity, a driving motor and a concentration hopper, the top end of the extraction container is fixedly communicated with the mixed feeding cavity, a spiral blade is fixed on the inner wall of the mixed feeding cavity, the top end of the extraction container on one side of the mixed feeding cavity is fixedly communicated with a breather pipe, and the bottom end of the extraction container is fixedly communicated with the concentration hopper. The bottom end of the concentration hopper fixedly communicates with a concentration pipe, the lower portion of the peripheral side of the concentration pipe fixedly communicates with a transparent hose, and a driving motor is fixed to the lower portion of the peripheral side of the extraction container. Through the arrangement of the extraction container, the mixed feeding cavity, the driving motor and the concentration hopper, the problems that the solution extraction device for recovering the acetonitrile ammonia tail gas is long in extraction time, low in working efficiency and not accurate enough in liquid separation after extraction during working are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the organic chemical related technical field, especially, a kind of solution extraction device of recycling acetonitrile ammonia tail gas. BACKGROUND

[0002] Acetonitrile ammonia synthesis is an important chemical synthesis method, mainly used for producing acetonitrile, and acetonitrile is a widely used organic chemical raw material, which can be used as the synthesis raw material of organic synthesis, medicine, pesticide, surfactant, dye and other fine chemicals, and as solvent, extractant or cleaning solvent, etc., in synthesis process, tail gas is generated, so when working, ammonia and acetonitrile in tail gas can be removed by water washing, but the waste water generated in gas washing needs to be extracted to recover acetonitrile in tail gas, but it still has the following problems in actual use:

[0003] When the solution extraction device of recycling acetonitrile ammonia tail gas works, the extractant and the washing gas solution of tail gas, that is, the solution of recycling acetonitrile and ammonia are directly transported to the extraction device, and extraction work is carried out through the interface of two liquids, the required extraction time is long, and the working efficiency is low during operation.

[0004] When the solution extraction device of recycling acetonitrile ammonia tail gas extracts and discharges, the transport between extractant and solution is directly controlled by valve, and during operation, a small amount of solution is left in the extractant after output, which affects the subsequent purification, and the liquid separation after extraction is not accurate. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of solution extraction device of recycling acetonitrile ammonia tail gas, by being provided with extraction container, mixed feed chamber, driving motor and concentration hopper, the problem that the required extraction time is long, the working efficiency is low when the solution extraction device of recycling acetonitrile ammonia tail gas works, and the liquid separation after extraction is not accurate is solved.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model discloses a solution extraction device of recycling acetonitrile ammonia tail gas, including extraction container, mixed feed chamber, driving motor and concentration hopper, the top fixed communication of extraction container has mixed feed chamber, the fixed spiral blade has on the inner wall of mixed feed chamber, the top fixed communication of extraction container of one side of mixed feed chamber has the air pipe, the bottom fixed communication of extraction container has concentration hopper, the bottom fixed communication of concentration hopper has concentration pipe, the lower part fixed communication of concentration pipe's circumferential side has transparent hose, the lower part fixed of extraction container circumferential side has driving motor, when working, the extraction agent and the solution of being extracted recycling acetonitrile and ammonia are contained in extraction container, the extraction agent and the solution of being extracted recycling acetonitrile and ammonia are fully mixed in input through the spiral blade in mixed feed chamber, the extraction agent and the solution of being extracted recycling acetonitrile and ammonia in extraction container are concentrated and delivered to concentration pipe through concentration hopper.

[0008] Further, the top end of the extraction container is centrally provided with a communication port, and the lower part of the extraction container circumferential side is provided with a movable hole, the extraction container is communicated with the mixed feed chamber through the communication port, and the driving shaft is movably connected through the movable hole.

[0009] Further, the center of the spiral blade is fixedly provided with a fixed shaft, and the top end of the fixed shaft is fixed to the inner top of the mixed feed chamber, so that the connection strength of the spiral blade on the mixed feed chamber is increased when the spiral blade works.

[0010] Further, the top end of the mixed feed chamber is symmetrically fixedly communicated with a feed pipe, the bottom end of the mixed feed chamber corresponds to the position of the communication port, the inner diameter of the mixed feed chamber is equal to the inner diameter of the communication port, and the extraction agent and the solution of being extracted recycling acetonitrile and ammonia are delivered into the mixed feed chamber through the feed pipe when the mixed feed chamber works.

[0011] Further, the output end of the driving motor is fixedly provided with a driving shaft, the driving shaft is movably connected in the movable hole, one end of the driving shaft away from the driving motor is fixedly provided with a stirring frame, and the stirring frame is arranged in the extraction container, so that the driving motor drives the driving shaft to rotate the stirring frame, and the liquid in the extraction container is stirred.

[0012] Further, the bottom end of the concentration pipe is closed, the circumferential side of the concentration pipe is fixedly provided with a control valve, the control valve is arranged above the transparent hose, and the liquid in the concentration pipe is delivered into the transparent hose when the bottom end is closed and the control valve is opened, and the liquid in the concentration pipe is stopped from being delivered when the control valve is closed.

[0013] The utility model has the following beneficial effects:

[0014] The utility model discloses a drive motor is started, and the drive shaft is rotated, and the stirring frame stirs the extractant and the solution of recycling ethylnitrile and ammonia tail gas in the extraction container, makes the extractant and the solution of recycling ethylnitrile and ammonia tail gas fully mix extraction, and the time required for full extraction is shorter, and the working efficiency is very high.

[0015] The utility model discloses a drive motor is started, and the drive shaft is rotated, and the stirring frame stirs the extractant and the solution of recycling ethylnitrile and ammonia tail gas in the extraction container, makes the extractant and the solution of recycling ethylnitrile and ammonia tail gas fully mix extraction, and the time required for full extraction is shorter, and the working efficiency is very high. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduces, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is a kind of solution extraction device for recycling ethylnitrile ammonia tail gas assembly structure perspective view;

[0018] Figure 2 It is the extraction container structure perspective view;

[0019] Figure 3 It is the mixed feed cavity structure perspective view;

[0020] Figure 4 It is the drive motor structure perspective view;

[0021] Figure 5 It is the concentrated bucket structure perspective view.

[0022] Signs:

[0023] 1, extraction container; 101, communication port; 102, air pipe; 103, movable hole; 2, mixed feed cavity; 201, feed pipe; 202, fixed shaft; 203, spiral blade; 3, driving motor; 301, driving shaft; 302, stirring frame; 4, concentration bucket; 401, concentration pipe; 402, control valve; 403, transparent hose. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment one

[0025] Please refer to Figures 1-5 The utility model discloses a kind of solution extraction devices of recycling acetonitrile ammonia tail gas, including extraction container 1, mixed feed cavity 2, driving motor 3 and concentration bucket 4, the top of extraction container 1 is fixedly connected with mixed feed cavity 2, when extraction container 1 works, acetonitrile and ammonia recovery solution and extraction agent carbon tetrachloride for carrying out extraction are contained therein, the inner wall of mixed feed cavity 2 is fixed with spiral blade 203, when spiral blade 203 works, extraction agent and acetonitrile and ammonia recovery solution in mixed feed cavity 2 are contained therein, the top of extraction container 1 on the side of mixed feed cavity 2 is fixedly connected with air pipe 102, the top of air pipe 102 is connected with the equipment of outside purified air, mixed feed cavity 2 is communicated with the equipment of purified air by air pipe 102, so that extraction container 1 can be ventilated and prevent gas volatilization pollution in it Air, the bottom of extraction container 1 is fixedly connected with concentration bucket 4, and extraction agent and extracted acetonitrile and ammonia solution in extraction container 1 are concentrated into concentration pipe 401 by concentration bucket 4, the bottom of concentration bucket 4 is fixedly connected with concentration pipe 401, the lower part of the periphery of concentration pipe 401 is fixedly connected with transparent hose 403, and different solutions are transported into transparent hose 403 by concentration pipe 401, and are output by transparent hose 403, and the position of solution stratification and flow is observed by transparent hose 403, the lower part of the periphery of extraction container 1 is fixed with driving motor 3, and driving motor 3 drives driving shaft 301 to rotate when working.

[0026] Specifically, the top of extraction container 1 is provided with communication port 101 in the center, and the lower part of the periphery of extraction container 1 is provided with movable hole 103, and extraction container 1 is communicated with mixed feed cavity through communication port 101 when working, and driving shaft 301 is movably connected through movable hole 103.

[0027] Further, the center of the spiral blade 203 is fixed with a fixed shaft 202, the top end of the fixed shaft 202 is fixed on the inner top of the mixing feed cavity 2, when the spiral blade 203 works, the fixed shaft 202 increases the strength of the center.

[0028] Further, the top end of the mixing feed cavity 2 is fixed with two feed pipes 201 in communication, the top end of the two feed pipes 201 is respectively communicated with the equipment for conveying the extraction solvent and the solution for recovering acetonitrile and ammonia tail gas, the bottom end of the mixing feed cavity 2 corresponds to the position of the communication port 101, the inner diameter of the mixing feed cavity 2 is equal to the inner diameter of the communication port 101, the extraction solvent and the solution for recovering acetonitrile and ammonia tail gas are conveyed into the mixing feed cavity 2 through the two feed pipes 201.

[0029] Further, the output end of the driving motor 3 is fixed with a driving shaft 301, the driving shaft 301 penetrates through the movable hole 103 and is movably connected, the end of the driving shaft 301 away from the driving motor 3 is fixed with a stirring frame 302, the stirring frame 302 is arranged in the extraction container 1, when the driving motor 3 works, the driving shaft 301 is driven to rotate, the stirring frame 302 is driven to stir the solution of the extraction solvent and the recovery of acetonitrile and ammonia tail gas in the extraction container 1, so that the solution of the extraction solvent and the recovery of acetonitrile and ammonia tail gas is fully mixed.

[0030] The operation process of the embodiment is as follows: when working, the solution of the extraction solvent and the recovery of acetonitrile and ammonia tail gas is conveyed into the mixing feed cavity 2 through the two feed pipes 201 at the top end of the mixing feed cavity 2, when the liquid passes through the mixing feed cavity 2, the liquid is conveyed and mixed by the spiral blade 203, and then falls into the extraction container 1 through the communication port 101, then the driving motor 3 is started, the driving shaft 301 is driven to rotate, the stirring frame 302 is driven to stir the solution of the extraction solvent and the recovery of acetonitrile and ammonia tail gas in the extraction container 1, so that the solution of the extraction solvent and the recovery of acetonitrile and ammonia tail gas is fully mixed and extracted. Specific embodiment two

[0031] Please refer to Figure 1 , 2, 5, on the basis of the first embodiment, the bottom end of the concentration pipe 401 is closed, the control valve 402 is fixed on the side of the concentration pipe 401, the control valve 402 is arranged above the transparent hose 403, during operation, after the liquid in the extraction container 1 is extracted, the liquid is placed and waits for the liquid to be fully layered, the control valve 402 is opened, then the extraction agent carbon tetrachloride is transported to the concentration pipe 401, and then transported to the transparent hose 403 through the concentration pipe 401, the state of the extraction agent transported in the transparent hose 403 is observed, when the extraction agent and the extracted solution are layered into the transparent hose 403, the control valve 402 is closed, the end of the transparent hose 403 is placed in the waste tank, the control valve 402 is opened in the waste tank, all the carbon tetrachloride is transported to the waste tank, then the transparent hose 403 is aligned with the ammonia solution collecting tank, the control valve 402 is opened, and the remaining solution is transported to the ammonia solution collecting tank.

[0032] The operation process of the embodiment is as follows: during operation, after the liquid in the extraction container 1 is extracted, the liquid is placed and waits for the liquid to be fully layered, the control valve 402 is opened, then the extraction agent carbon tetrachloride is transported to the concentration pipe 401, and then transported to the transparent hose 403 through the concentration pipe 401, the state of the extraction agent transported in the transparent hose 403 is observed, when the extraction agent and the extracted solution are layered into the transparent hose 403, the control valve 402 is closed, the end of the transparent hose 403 is placed in the waste tank, the control valve 402 is opened in the waste tank, all the carbon tetrachloride is transported to the waste tank, then the transparent hose 403 is aligned with the ammonia solution collecting tank, the control valve 402 is opened, and the remaining solution is transported to the ammonia solution collecting tank.

[0033] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A solution extraction device for recycling acetonitrile ammonia tail gas, comprising an extraction container (1), a mixed feed cavity (2), a driving motor (3) and a concentration hopper (4), characterized in that: The top end of the extraction container (1) is fixedly communicated with a mixing feeding cavity (2), the inner wall of the mixing feeding cavity (2) is fixedly provided with a spiral blade (203), the top end of the mixing feeding cavity (2) on one side of the extraction container (1) is fixedly communicated with a breather pipe (102), the bottom end of the extraction container (1) is fixedly communicated with a collecting hopper (4), the bottom end of the collecting hopper (4) is fixedly communicated with a collecting pipe (401), the lower part of the periphery of the collecting pipe (401) is fixedly communicated with a transparent hose (403), and the lower part of the periphery of the extraction container (1) is fixedly provided with a driving motor (3).

2. The solution extraction apparatus for recovering acetonitrile ammonia tail gas according to claim 1, characterized in that: The top end of the extraction container (1) is centrally provided with a communicating port (101), and the lower part of the periphery of the extraction container (1) is provided with a movable hole (103).

3. The apparatus for recovering acetonitrile from an amine tail gas according to claim 2, wherein: The center of the spiral blade (203) is fixedly provided with a fixed shaft (202), and the top end of the fixed shaft (202) is fixedly arranged at the inner top of the mixing feeding cavity (2).

4. The apparatus for recovering acetonitrile from an ammonia tail gas according to claim 3, wherein: The top end of the mixing feeding cavity (2) is fixedly communicated with a feeding pipe (201) in a symmetrical mode, the bottom end of the mixing feeding cavity (2) corresponds to the position of the communicating port (101), and the inner diameter of the mixing feeding cavity (2) is equal to the inner diameter of the communicating port (101).

5. The apparatus for recovering acetonitrile from an ammonia tail gas according to claim 2, wherein: The output end of the driving motor (3) is fixedly provided with a driving shaft (301), the driving shaft (301) is movably connected in the movable hole (103), one end of the driving shaft (301) away from the driving motor (3) is fixedly provided with a stirring frame (302), and the stirring frame (302) is arranged in the extraction container (1).

6. The apparatus for recovering acetonitrile from an amine tail gas according to claim 1, wherein: The bottom end of the collecting pipe (401) is arranged in a closed mode, the periphery of the collecting pipe (401) is fixedly provided with a control valve (402), and the control valve (402) is arranged above the transparent hose (403).

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