5-acetoacetamidobenzimidazolone ammonia gas recovery system
By optimizing ammonia distribution and mixing, the 5-acetoacetylaminobenzimidazolone ammonia recovery system solves the problems of multiple equipment, large space and high cost caused by multi-stage recovery tanks, achieving more efficient ammonia absorption and reducing costs.
Patent Information
- Application Number
- CN202422918863.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The existing 5-acetoacetylaminobenzimidazolone ammonia recovery system requires multi-stage recovery tanks, resulting in problems such as multiple equipment, large floor space and high cost.
A 5-acetoacetylaminobenzimidazolone ammonia recovery system is adopted, including a primary absorption tank and a secondary absorption tank. Components such as a distribution ring pipe, a venturi tube, a hollow disc and a spray tower are used to achieve uniform distribution and mixing of ammonia, reduce the number of absorption tanks, and improve absorption efficiency.
By optimizing ammonia distribution and mixing, the number of absorption tanks is reduced, equipment costs and floor space are reduced, and ammonia absorption efficiency is improved.
Smart Images
Figure CN223464630U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of 5-acetyl acetylamino benzimidazolone ammonia recovery system, belong to ammonia recovery technical field. BACKGROUND
[0002] 5-acetyl acetylamino benzimidazolone is commonly used in the synthesis of medicine, pesticide, pigment and special material, and also used as pigment intermediate in petroleum chemical industry. Ammonia is generated in the production process of 5-acetyl acetylamino benzimidazolone, and multi-stage absorption is generally used in ammonia recovery process. The current ammonia recovery system includes one to four recovery tanks, and ammonia recovery is carried out in each recovery tank. However, the recovery efficiency of each recovery tank is low, and four-stage recovery is required, which results in more system equipment, larger floor area and increased cost. SUMMARY
[0003] The utility model provides a kind of 5-acetyl acetylamino benzimidazolone ammonia recovery system, solve the current ammonia recovery system including one to four recovery tanks, and ammonia recovery is carried out in each recovery tank. However, the recovery efficiency of each recovery tank is low, and four-stage recovery is required, which results in more system equipment, larger floor area and increased cost.
[0004] The utility model relates to a kind of 5-acetyl acetylamino benzimidazolone ammonia recovery system, including primary absorption tank and secondary absorption tank, primary absorption tank is connected with conveying pipe, conveying pipe is connected heat exchanger, heat exchanger is connected with inlet pipe, the top of primary absorption tank is fixed with communicating pipe, communicating pipe is connected with venturi, the outlet end of venturi is fixed with flow guide pipe, the lower part of primary absorption tank is equipped with the distribution ring pipe connected with conveying pipe, the inside lower part of distribution ring pipe is evenly equipped with the inclined distribution hole, the lower part of secondary absorption tank is fixed with support column, hollow disc is rotatably installed on support column, a plurality of liquid guide pipes are circularly arranged on the outer periphery of hollow disc, funnel-shaped flow limiting pipe is arranged on the outer end of liquid guide pipe, the bottom of support column is fixedly connected with flow guide pipe, the bottom of secondary absorption tank is connected with suction pipe, the other end of suction pipe is connected with the inlet end of venturi, circulation liquid pump is arranged on suction pipe, the top of secondary absorption tank is fixed with spray tower, spray tower is equipped with sprayer, sprayer is connected with spray liquid supply pipe, spray liquid supply pipe is connected with suction pipe, the top of spray tower is equipped with outlet pipe, outlet pipe is connected with fan.
[0005] As a preferred, a plurality of connecting pipes are fixedly arranged on the inner side of distribution ring pipe, the other end of connecting pipe is fixedly connected on the outer side wall of the bottom of conveying pipe, and conveying pipe is located at the central axis of distribution ring pipe, so that ammonia can be more uniformly distributed in the absorption liquid in primary absorption tank, and ammonia absorption effect is better.
[0006] As a kind of preferred, the bottom of primary absorption tank and secondary absorption tank is equipped with liquid discharge pipe, and the top of primary absorption tank and secondary absorption tank is equipped with liquid inlet pipe, which is convenient for discharging and adding absorption liquid.
[0007] As a kind of preferred, the sprayer includes flow guide ring pipe connected with spray liquid inlet pipe, and a plurality of connecting hoses are fixed on the upper and lower flow guide ring pipes, and the other end of the connecting hose is fixed with spray pipe, and the other end of the spray pipe extends into the spray tower and is fixed with spray head, and the spray tower below the spray head is fixed with packing layer, which can guide liquid to the upper and lower spray pipes through the flow guide ring pipe, and the liquid supply is more uniform, and the spray effect is better.
[0008] As a kind of preferred, the top of the spray tower is fixed with demister, which removes water mist in the gas.
[0009] As a kind of preferred, the bottom of the liquid guide pipe is provided with a plurality of liquid outlet holes, which is convenient for uniform distribution of liquid and better mixing.
[0010] As a kind of preferred, the heat exchanger includes heat exchange cylinder, and the top and bottom of the heat exchange cylinder are connected with distribution pipe head, the bottom distribution pipe head is connected with conveying pipe, and the top distribution pipe head is connected with gas inlet pipe, two flow guide plates are arranged on the distribution pipe head below the gas inlet pipe and are symmetrical about the center axis of the lower end, a spacing is arranged between the two flow guide plates, a distribution hole plate is arranged below the flow guide plate, a support sleeve is arranged on the bottom outside of the distribution hole plate, and the top and bottom of the heat exchange cylinder are fixed with pipe plate, the heat exchange pipe is fixed in the pipe hole of the pipe plate, and the cooling outlet pipe and the cooling inlet pipe are arranged on the top and bottom of the heat exchange cylinder respectively, the bottom of the support sleeve is in contact with the pipe plate of the top, and the ammonia gas can be more uniformly distributed in the upper distribution pipe head after entering the heat exchanger, and can be more uniformly entered into the plurality of heat exchange pipes for better heat exchange and cooling.
[0011] The utility model has the following beneficial effects:
[0012] By arranging the distribution ring pipe in the primary absorption tank, the heat exchange and cooling ammonia gas can be uniformly distributed and introduced into the absorption liquid in the primary absorption tank, the ammonia gas can be better absorbed, then the gas discharged from the primary absorption tank is mixed with the absorption liquid extracted from the secondary absorption tank in the venturi pipe, and then the hollow disc is hit, then the liquid is sprayed from the flow limiting pipe through the liquid guide pipe, the reaction force during spraying can drive the rotation of the liquid guide pipe and the hollow disc, the liquid is sprayed from the flow limiting pipe, and the liquid in the secondary absorption tank can be stirred and mixed, the ammonia gas absorption effect of each absorption tank is better, the number of absorption tanks is reduced, the cost is reduced, and the land occupation is small. DRAWINGS
[0013] Figure 1 The structure of the utility model is shown in the figure;
[0014] Figure 2 isFigure 1 part structure diagram of the distribution ring pipe Figure 1 ;
[0015] Figure 3 part structure diagram of the bottom structure of the distribution ring pipe
[0016] Figure 4 part structure diagram of the distribution ring pipe Figure 1 Figure 2 ;
[0017] Figure 5 part structure diagram of the top structure of the hollow disc
[0018] In the figure: 1, air inlet pipe; 2, heat exchanger; 201, distribution pipe head; 202, flow guide plate; 203, distribution hole plate; 204, support sleeve; 205, pipe plate; 206, heat exchange cylinder; 207, heat exchange pipe; 3, conveying pipe; 4, primary absorption tank; 5, distribution ring pipe; 6, communication pipe; 7, venturi pipe; 8, flow guide pipe; 9, secondary absorption tank; 10, flow limiting pipe; 11, support column; 12, circulating liquid pump; 13, liquid guide pipe; 14, hollow disc; 15, suction pipe; 16, filler layer; 17, spraying liquid conveying pipe; 18, flow guide ring pipe; 19, demister; 20, spraying pipe; 21, spraying tower; 22, liquid outlet hole; 23, distribution hole; 24, connecting pipe. DETAILED DESCRIPTION
[0019] The utility model will be further explained in connection with the embodiments below.
[0020] Embodiment one, as Figures 1 to 5 The utility model discloses a 5-acetyl acetylamino benzimidazolone ammonia recovery system, including primary absorption tank 4 and secondary absorption tank 9, the primary absorption tank 4 is connected with the conveying pipe 3, the conveying pipe 3 is connected heat exchanger 2, heat exchanger 2 is connected inlet pipe 1, the top of primary absorption tank 4 is fixed with the communicating pipe 6, the communicating pipe 6 is connected with venturi 7, and venturi 7 is gas-liquid mixing venturi, and the export end of venturi 7 is fixed with the flow guide pipe 8, and the lower part of primary absorption tank 4 is equipped with the distribution ring pipe 5 of connecting conveying pipe 3, and the inner side lower part of distribution ring pipe 5 is evenly equipped with the inclined distribution hole 23, and the lower part of secondary absorption tank 9 is fixed with the support column 11, and the hollow disc 14 is rotatably installed on the support column 11, and the outer periphery of hollow disc 14 is circular array with multiple liquid guide pipes 13, and the outer end of liquid guide pipe 13 is equipped with the funnel-shaped flow limiting pipe 10, and the bottom of support column 11 is fixedly connected with flow guide pipe 8, and the bottom of secondary absorption tank 9 is connected with suction pipe 15, and the other end of suction pipe 15 is connected with the import end of venturi 7, and the circulation liquid pump 12 is equipped on suction pipe 15, and the top of secondary absorption tank 9 is fixed with the spray tower 21, and the spray tower 21 is equipped with the sprayer, and the sprayer is connected with the spray liquid pipe 17, and the spray liquid pipe 17 is connected with suction pipe 15, and the top of spray tower 21 is equipped with the outlet pipe, and the outlet pipe is connected with the fan, and the fan is not marked in the drawing, and the outlet of the reaction kettle is connected with inlet pipe 1, and the reaction kettle is not marked in the drawing.
[0021] When using, ammonia gas enters heat exchanger from inlet pipe 1, after heat exchange and cooling in heat exchanger, enters distribution ring pipe 5 from conveying pipe 3, then is evenly distributed in the absorption liquid in primary absorption tank 4 from distribution hole 23 on distribution ring pipe 5, and the unabsorbed ammonia gas carries out gas-liquid mixing with the absorption liquid in secondary absorption tank 9 that is transported by circulation liquid pump 12 into venturi 7 through communicating pipe 6, after mixing, enters the liquid channel in support column 11 from flow guide pipe 8, then enters hollow disc 14, and then is sprayed from flow limiting pipe 10 through liquid guide pipe 13, and the reaction force of the sprayed liquid will push flow limiting pipe 10 and hollow disc 14 to rotate around support column 11, and the absorption liquid after gas-liquid mixing is sprayed from flow limiting pipe 10 is rotated at the same time of stirring and mixing the absorption liquid, increases the absorption effect, and then the gas enters spray tower 21, is sprayed and absorbed, and then is discharged to air from outlet pipe through fan.
[0022] In the embodiment two, on the basis of the embodiment one, the inner side of distribution ring pipe 5 is evenly fixed with multiple connecting pipes 24, the other end of connecting pipe 24 is fixedly connected on the bottom outside wall of conveying pipe 3, and conveying pipe 3 is at the central axis of distribution ring pipe 5.
[0023] The bottom of the first absorption tank 4 and the second absorption tank 9 is provided with a liquid discharge pipe, and the top of the first absorption tank 4 and the second absorption tank 9 is provided with a liquid inlet pipe.
[0024] The sprayer comprises a flow guide ring pipe 18 connected with the spray liquid inlet pipe 17, a plurality of connecting hoses are fixed on the upper and lower portions of the flow guide ring pipe 18, the other end of the connecting hose is fixed with a spray pipe 20, the other end of the spray pipe 20 extends into a spray tower 21, a spray head is fixed on the spray tower 21, and a filler layer 16 is fixed on the spray tower 21 below the spray head.
[0025] The top of the spray tower 21 is fixed with a demister 19.
[0026] The bottom of the liquid guide pipe 13 is provided with a plurality of liquid outlet holes 22.
[0027] The heat exchanger 2 comprises a heat exchange cylinder 206, the top and bottom of the heat exchange cylinder 206 are connected with distribution pipe heads 201, the distribution pipe head 201 at the bottom is connected with the conveying pipe 3, the distribution pipe head 201 at the top is connected with the gas inlet pipe 1, two flow guide plates 202 which are symmetrical about the center axis of the lower end are arranged on the distribution pipe head 201 below the gas inlet pipe 1, a spacing is arranged between the two flow guide plates 202, a distribution hole plate 203 is arranged below the flow guide plates 202, a support sleeve 204 is arranged on the outside of the bottom of the distribution hole plate 203, the top and bottom of the heat exchange cylinder 206 are fixed with pipe plates 205, the pipe holes of the pipe plates 205 are fixed with heat exchange pipes 207, the bottom of the support sleeve 204 is in contact with the pipe plates 205 at the top and bottom. When the ammonia gas enters the heat exchanger from the gas inlet pipe 1, the ammonia gas is guided into three parts by the flow guide plates 202, then is uniformly distributed through the distribution hole plate 203, and then is uniformly distributed into the plurality of heat exchange pipes 207 on the pipe plates 205.
[0028] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.
[0029] In the description of the present utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and do not require the present utility model to be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present utility model.
Claims
1. A 5-acetyl acetyl amino benzimidazolone ammonia recovery system, comprising a primary absorption tank (4) and a secondary absorption tank (9), the primary absorption tank (4) is connected with a conveying pipe (3), the conveying pipe (3) is connected with a heat exchanger (2), the heat exchanger (2) is connected with a gas inlet pipe (1), the top of the primary absorption tank (4) is fixed with a communication pipe (6), the communication pipe (6) is connected with a venturi (7), the outlet end of the venturi (7) is fixed with a flow guide pipe (8), characterized in that: The lower part of the first absorption tank (4) is provided with a distribution ring pipe (5) connected with the conveying pipe (3), the inner side of the distribution ring pipe (5) is uniformly provided with inclined distribution holes (23) in the lower part, the inner lower part of the second absorption tank (9) is fixedly provided with a support column (11), the support column (11) is rotatably provided with a hollow disc (14), the outer periphery of the hollow disc (14) is circularly provided with a plurality of liquid guide pipes (13), the outer end of the liquid guide pipe (13) is provided with a funnel-shaped flow limiting pipe (10), the bottom of the support column (11) is fixedly connected with a flow guide pipe (8), the bottom of the second absorption tank (9) is connected with a suction pipe (15), the other end of the suction pipe (15) is connected with the inlet end of the venturi pipe (7), the suction pipe (15) is provided with a circulating liquid pump (12), the top of the second absorption tank (9) is fixedly provided with a spray tower (21), the spray tower (21) is provided with a sprayer, the sprayer is connected with a spray liquid conveying pipe (17), the spray liquid conveying pipe (17) is connected with the suction pipe (15), the top of the spray tower (21) is provided with an air outlet pipe, and the air outlet pipe is connected with a fan.
2. The 5-acetylacetamidobenzimidazolone ammonia recovery system of claim 1, wherein: The inner side of the distribution ring pipe (5) is uniformly fixed with a plurality of connecting pipes (24), the other end of the connecting pipe (24) is fixedly connected to the bottom outer side wall of the conveying pipe (3), and the conveying pipe (3) is located at the central axis of the distribution ring pipe (5).
3. The 5-acetylacetamidobenzimidazolone ammonia recovery system of claim 1, wherein: The bottom of the first absorption tank (4) and the second absorption tank (9) is provided with a liquid discharge pipe, and the top of the first absorption tank (4) and the second absorption tank (9) is provided with a liquid inlet pipe.
4. The 5-acetylacetamidobenzimidazolone ammonia recovery system of claim 1, wherein: The sprayer comprises a flow guide ring pipe (18) connected with the spray liquid conveying pipe (17), a plurality of connecting hoses are fixedly arranged on the flow guide ring pipe (18) in an up-down direction, the other end of the connecting hose is fixedly provided with a spray pipe (20), the other end of the spray pipe (20) extends into the spray tower (21) and is fixedly provided with a spray head, and a filler layer (16) is fixedly arranged on the spray tower (21) below the spray head.
5. The 5-acetylacetamidobenzimidazolone ammonia recovery system of claim 4, wherein: The top of the spray tower (21) is fixedly provided with a demister (19).
6. The 5-acetylacetamidobenzimidazolone ammonia recovery system of claim 1, wherein: The bottom of the liquid guide pipe (13) is provided with a plurality of liquid outlet holes (22).
7. The 5-acetylacetamidobenzimidazolone ammonia recovery system of claim 1, wherein: The heat exchanger (2) comprises a heat exchange cylinder (206), the top and bottom of the heat exchange cylinder (206) are connected with distribution pipe heads (201), the bottom distribution pipe head (201) is connected with the conveying pipe (3), the top distribution pipe head (201) is connected with the air inlet pipe (1), two flow guide plates (202) are arranged on the distribution pipe head (201) below the air inlet pipe (1) and are symmetrical about the central axis of the lower end, a space is arranged between the two flow guide plates (202), a distribution hole plate (203) is arranged below the flow guide plates (202), a support sleeve (204) is arranged on the bottom outer side of the distribution hole plate (203), the top and bottom of the heat exchange cylinder (206) are fixedly provided with pipe plates (205), the pipe holes of the pipe plates (205) are fixedly provided with heat exchange pipes (207), the top and bottom of the heat exchange cylinder (206) are respectively provided with a cooling water outlet pipe and a cooling water inlet pipe, and the bottom of the support sleeve (204) is in contact with the pipe plates (205) at the top and bottom.