Nitric acid evaporation device with high evaporation efficiency

Abstract

The utility model relates to a nitric acid evaporation device with high evaporation efficiency. The nitric acid evaporation device comprises an evaporation tank, a rotary spraying mechanism, an auxiliary evaporation pipe and a heating piece, in the actual nitric acid processing process, when dilute nitric acid needs to be evaporated, the dilute nitric acid can be guided into the feeding pipeline, then the rotating driving assembly is operated to drive the feeding pipeline and the rotating spray head to rotate, and the dilute nitric acid in the rotating spray head is sprayed to the inner walls of the evaporation tank and the auxiliary evaporation pipe; meanwhile, the evaporation tank and the auxiliary evaporation pipe are heated through the heating piece, dilute nitric acid is evaporated through the evaporation tank and the auxiliary evaporation pipe, and then evaporated gas is discharged through the discharging assembly, so that nitric acid can be better evaporated, the evaporation efficiency of the nitric acid is improved, the evaporation processing time is shortened, subsequent processing of the nitric acid is guaranteed, and the product quality is improved. The production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical engineering, in particular to a nitric acid evaporation device with high evaporation efficiency. Background Technique

[0002] Nitric acid is a chemical raw material. Mostly, dilute nitric acid is used as the raw material, and concentrated sulfuric acid is prepared by rectification and concentration.

[0003] In the production process of nitric acid, ammonia gas needs to be oxidized to nitric oxide under the action of a catalyst; carbon monoxide is further oxidized to nitrogen dioxide; nitrogen dioxide is absorbed by water to obtain nitric acid products. The obtained nitric acid products are dilute nitric acid, in which nitric oxide is dissolved in the nitric acid, reducing the quality of nitric acid. In order to improve the quality of nitric acid, an evaporator is usually used to remove or reduce the content of nitric oxide.

[0004] Traditional nitric acid evaporation equipment has a low evaporation efficiency when evaporating dilute nitric acid, resulting in a long evaporation processing time, which easily affects the subsequent processing of nitric acid and increases production costs. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In order to solve the above problems of the prior art, the utility model provides a nitric acid evaporation device with high evaporation efficiency, which can better evaporate nitric acid, improve the evaporation efficiency of nitric acid, shorten the evaporation processing time, ensure the subsequent processing of nitric acid, and reduce production costs.

[0007] (2) Technical Solutions

[0008] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0009] A nitric acid evaporation device with high evaporation efficiency includes an evaporation tank, a rotary spraying mechanism, an auxiliary evaporation pipe and a heating element. The rotary spraying mechanism is arranged at the top of the evaporation tank. The auxiliary evaporation pipe is installed inside the evaporation tank. The auxiliary evaporation pipe is arranged below the rotary spraying mechanism. Heating elements are arranged inside both the evaporation tank and the auxiliary evaporation pipe;

[0010] A discharging assembly is arranged at the upper part of the evaporation tank;

[0011] The rotary spraying mechanism includes a rotation driving assembly, a feeding pipeline and a rotary nozzle. The feeding pipeline is rotatably connected to the top of the evaporation tank. The rotation driving assembly is drivingly connected to the feeding pipeline. The rotary nozzle is arranged inside the evaporation tank. The upper part of the rotary nozzle is connected to the bottom of the feeding pipeline. The rotary nozzle is arranged above the auxiliary evaporation pipe.

[0012] Furthermore, the rotation driving assembly includes a rotation driving member, a driving wheel, a driven wheel and a transmission belt. The rotation driving member is installed on the outer surface of the evaporation tank, the driving wheel is drivingly connected to the rotation driving member, the driven wheel is fixedly installed on the outer surface of the feed pipe, and the driving wheel is connected to the driven wheel through the transmission belt.

[0013] Furthermore, an aggregate chamber is provided at the upper part of the rotary spray head. A plurality of first liquid spraying channels are circumferentially arranged in the middle of the rotary spray head. The first liquid spraying channels are all communicated with the aggregate chamber, and the first liquid spraying channels are all inclined downward. A plurality of second liquid spraying channels are circumferentially arranged at the lower part of the aggregate chamber. The second liquid spraying channels are all communicated with the aggregate chamber, and the second liquid spraying channels are all inclined outward.

[0014] Furthermore, the top of the auxiliary evaporation pipe is open.

[0015] Furthermore, a confluence port is provided at the bottom of the auxiliary evaporation pipe.

[0016] Furthermore, the discharging assembly includes a collecting ring pipe and a gas guiding pipe. A plurality of the gas guiding pipes are fixedly connected to the top of the evaporation tank. The gas guiding pipes are all connected to the collecting ring pipe, and an exhaust pipe is arranged on the outer surface of the collecting ring pipe.

[0017] Furthermore, a guiding platform is further included. The guiding platform is fixedly connected to the inner surface of the evaporation tank. The guiding platform is arranged outside the rotary spray head, and the inner surface of the guiding platform is arc-shaped.

[0018] Furthermore, a material guiding assembly is further included. The material guiding assembly is arranged at the top of the feed pipe;

[0019] The material guiding assembly includes a material guiding pipe and a connecting piece. The top of the feed pipe is rotatably and sealingly connected to the lower part of the connecting piece through a rotary seal, and the upper part of the connecting piece is fixedly connected to the material guiding pipe.

[0020] Furthermore, a support frame is further included. The support frame is fixedly connected to the outer surface of the evaporation tank.

[0021] Furthermore, a controller is further included. The controller is electrically connected to the rotary spraying mechanism.

[0022] (III) Beneficial effects

[0023] The beneficial effects of the present utility model are as follows: During the actual nitric acid processing, when it is necessary to evaporate dilute nitric acid, the dilute nitric acid can be introduced into the feeding pipeline. Subsequently, the rotation driving assembly is operated, causing the rotation driving assembly to drive the feeding pipeline and the rotating nozzle to rotate, so that the dilute nitric acid in the rotating nozzle is sprayed onto the inner walls of the evaporation tank and the auxiliary evaporation pipe. At the same time, the evaporation tank and the auxiliary evaporation pipe are heated by the heating element, enabling the evaporation tank and the auxiliary evaporation pipe to evaporate the dilute nitric acid. Subsequently, the evaporated gas is discharged through the discharging assembly. Thus, the evaporation of nitric acid can be better carried out, improving the evaporation efficiency of nitric acid, shortening the evaporation processing time, ensuring the subsequent processing of nitric acid, and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. is a schematic diagram of the overall structure of the nitric acid evaporation device with high evaporation efficiency according to an embodiment of the present utility model;

[0025] Figure 2 FIG. is a front view of the overall structure of the nitric acid evaporation device with high evaporation efficiency according to an embodiment of the present utility model;

[0026] Figure 3 FIG. is a cross-sectional view of the overall structure of the nitric acid evaporation device with high evaporation efficiency according to an embodiment of the present utility model;

[0027]

DESCRIPTION OF THE REFERENCE NUMERALS

[0028] Material guiding pipe 1, connecting member 2, transmission belt 3, driving wheel 4, rotation driving member 5, support frame 6, evaporation tank 7, mounting plate 8, air guiding pipe 9, feeding pipeline 10, collecting ring pipe 11, exhaust pipe 12, discharging pipe 13, guiding platform 14, aggregate cavity 15, rotating nozzle 16, first liquid spraying channel 17, second liquid spraying channel 18, auxiliary evaporation pipe 19, confluence port 20. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below with reference to the accompanying drawings and through specific embodiments.

[0030] Please refer to Figures 1 to 3 As shown, a nitric acid evaporation device with high evaporation efficiency of the present utility model includes an evaporation tank 7, a rotary spraying mechanism, an auxiliary evaporation pipe 19 and a heating element. The rotary spraying mechanism is arranged at the top of the evaporation tank 7. The auxiliary evaporation pipe 19 is installed inside the evaporation tank 7. The auxiliary evaporation pipe 19 is arranged below the rotary spraying mechanism. The heating element is arranged inside both the evaporation tank 7 and the auxiliary evaporation pipe 19;

[0031] A discharging assembly is arranged at the upper part of the evaporation tank 7;

[0032] The rotary spraying mechanism includes a rotation driving assembly, a feed pipe 10, and a rotary nozzle 16. The feed pipe 10 is rotatably connected to the top of the evaporation tank 7. The rotation driving assembly is drivingly connected to the feed pipe 10. The rotary nozzle 16 is disposed inside the evaporation tank 7. The upper part of the rotary nozzle 16 is connected to the bottom of the feed pipe 10. The rotary nozzle 16 is disposed above the auxiliary evaporation pipe 19.

[0033] The working principle of the present utility model is as follows: During the actual nitric acid processing, when it is necessary to evaporate dilute nitric acid, the dilute nitric acid can be introduced into the interior of the feed pipe 10. Subsequently, the rotation driving assembly is operated to drive the feed pipe 10 and the rotary nozzle 16 to rotate by the rotation driving assembly, so that the dilute nitric acid in the rotary nozzle 16 is sprayed onto the inner walls of the evaporation tank 7 and the auxiliary evaporation pipe 19. At the same time, the evaporation tank 7 and the auxiliary evaporation pipe 19 are heated by the heating element, so that the evaporation tank 7 and the auxiliary evaporation pipe 19 evaporate the dilute nitric acid. Subsequently, the evaporated gas is discharged through the discharge assembly.

[0034] Further, the rotation driving assembly includes a rotation driving member 5, a driving wheel 4, a driven wheel, and a transmission belt 3. The rotation driving member 5 is installed on the outer surface of the evaporation tank 7. The driving wheel 4 is drivingly connected to the rotation driving member 5. The driven wheel is fixedly installed on the outer surface of the feed pipe 10. The driving wheel 4 is connected to the driven wheel through the transmission belt 3.

[0035] As can be seen from the above description, when it is necessary to drive the rotary nozzle 16 to rotate, the rotation driving member 5 can be operated to drive the driving wheel 4 to rotate. At the same time, the driving wheel 4 drives the driven wheel and the feed pipe 10 to rotate through the transmission belt 3, and the feed pipe 10 drives the rotary nozzle 16 to rotate, so that the rotary nozzle 16 rotates and sprays the dilute nitric acid onto the inner walls of the evaporation tank 7 and the auxiliary evaporation pipe 19.

[0036] Further, an aggregate chamber 15 is provided at the upper part of the rotary nozzle 16. A plurality of first liquid spraying channels 17 are circumferentially provided in the middle of the rotary nozzle 16. The first liquid spraying channels 17 are all communicated with the aggregate chamber 15. The first liquid spraying channels 17 are all inclined downward. A plurality of second liquid spraying channels 18 are circumferentially provided at the lower part of the aggregate chamber 15. The second liquid spraying channels 18 are all communicated with the aggregate chamber 15. The second liquid spraying channels 18 are all inclined outward.

[0037] As can be seen from the above description, it is beneficial for the dilute nitric acid to enter the aggregate chamber 15 through the feed pipe 10, and then flow to each of the first liquid spraying channels 17 and the second liquid spraying channels 18 through the aggregate chamber 15, and the dilute nitric acid is sprayed onto the inner wall of the evaporation tank 7 through the first liquid spraying channels 17 and onto the inner wall of the auxiliary evaporation pipe 19 through the second liquid spraying channels 18.

[0038] Further, the top of the auxiliary evaporation pipe 19 is open.

[0039] As can be seen from the above description, it is beneficial to better collect the scattered dilute nitric acid through the auxiliary evaporation pipe 19 with an open top.

[0040] Further, a confluence port 20 is provided at the bottom of the auxiliary evaporation pipe 19.

[0041] As can be seen from the above description, it is beneficial for the nitric acid in the auxiliary evaporation pipe 19 and the nitric acid in the evaporation tank 7 to converge through the confluence port 20.

[0042] Further, the discharging assembly includes a collecting ring pipe 11 and a gas guiding pipe 9. A plurality of the gas guiding pipes 9 are fixedly connected to the top of the evaporation tank 7. The gas guiding pipes 9 are all connected to the collecting ring pipe 11. An exhaust pipe 12 is provided on the outer surface of the collecting ring pipe 11.

[0043] As can be seen from the above description, it is beneficial for the vapor generated by evaporation in the evaporation tank 7 to enter the interior of the collecting ring pipe 11 through the gas guiding pipe 9 and then be discharged through the exhaust pipe 12.

[0044] Further, a guiding platform 14 is further included. The guiding platform 14 is fixedly connected to the inner surface of the evaporation tank 7. The guiding platform 14 is arranged outside the rotary spray head 16. The inner surface of the guiding platform 14 is arc-shaped.

[0045] As can be seen from the above description, it is beneficial for the dilute nitric acid sprayed out from the first liquid spraying channel 17 to adhere to the inner surface of the guiding platform 14 and slide down along the arc-shaped guiding platform 14 to the inner wall of the evaporation tank 7.

[0046] Further, a guiding component is further included. The guiding component is provided at the top of the feed pipeline 10;

[0047] The guiding component includes a guiding pipe 1 and a connecting piece 2. The top of the feed pipeline 10 is rotatably sealed and rotatably connected to the lower part of the connecting piece 2. The upper part of the connecting piece 2 is fixedly connected to the guiding pipe 1.

[0048] As can be seen from the above description, it is beneficial to introduce the dilute nitric acid into the feed pipeline 10 through the guiding pipe 1 and prevent the rotation of the feed pipeline 10 from affecting the guiding pipe 1 through the connecting piece 2.

[0049] Further, a support frame 6 is further included. The support frame 6 is fixedly connected to the outer surface of the evaporation tank 7.

[0050] As can be seen from the above description, it is beneficial to support the overall device through the support frame 6.

[0051] Further, it further includes a controller, and the controller is electrically connected to the rotary spraying mechanism.

[0052] As can be seen from the above description, it is beneficial for users to control the overall device more conveniently.

[0053] Embodiment 1

[0054] Please refer to Figures 1 to 3 , a nitric acid evaporation device with high evaporation efficiency, including an evaporation tank 7, a rotary spraying mechanism, an auxiliary evaporation pipe 19 and a heating element. The rotary spraying mechanism is arranged at the top of the evaporation tank 7. The auxiliary evaporation pipe 19 is installed inside the evaporation tank 7. The auxiliary evaporation pipe 19 is arranged below the rotary spraying mechanism. Heating elements are arranged inside both the evaporation tank 7 and the auxiliary evaporation pipe 19;

[0055] The heating element uses an electric heating wire;

[0056] A discharge pipe 13 is welded to the bottom of the evaporation tank 7;

[0057] A discharge assembly is arranged at the upper part of the evaporation tank 7;

[0058] The rotary spraying mechanism includes a rotation driving assembly, a feed pipe 10 and a rotary spray head 16. The feed pipe 10 is rotatably connected to the top of the evaporation tank 7 through a rotary seal. The rotation driving assembly is drivingly connected to the feed pipe 10. The rotary spray head 16 is arranged inside the evaporation tank 7. The upper part of the rotary spray head 16 is connected to the bottom of the feed pipe 10. The rotary spray head 16 is arranged above the auxiliary evaporation pipe 19;

[0059] The rotation driving assembly includes a rotation driving member 5, a driving wheel 4, a driven wheel and a transmission belt 3. The rotation driving member 5 is installed on the outer surface of the evaporation tank 7 through a mounting plate 8. The driving wheel 4 is drivingly connected to the rotation driving member 5. The driven wheel is fixedly installed on the outer surface of the feed pipe 10. The driving wheel 4 is connected to the driven wheel through the transmission belt 3;

[0060] The rotation driving member 5 uses a reduction motor;

[0061] An aggregate cavity 15 is arranged at the upper part of the rotary spray head 16. A plurality of first liquid spraying channels 17 are arranged around the middle of the rotary spray head 16. The first liquid spraying channels 17 are all communicated with the aggregate cavity 15. The first liquid spraying channels 17 are all inclined downward. A plurality of second liquid spraying channels 18 are arranged around the lower part of the aggregate cavity 15. The second liquid spraying channels 18 are all communicated with the aggregate cavity 15. The second liquid spraying channels 18 are all inclined outward;

[0062] The top of the auxiliary evaporation tube 19 is open;

[0063] The second liquid spray channel 18 is inclined toward the opening at the top of the auxiliary evaporation tube 19;

[0064] The bottom of the auxiliary evaporation tube 19 is provided with a confluence port 20;

[0065] The discharge assembly includes a collecting ring pipe 11 and an air guide pipe 9. The top of the evaporator 7 is fixedly connected with a plurality of the air guide pipes 9 by welding. The air guide pipes 9 are all connected to the collecting ring pipe 11 by welding. The outer surface of the collecting ring pipe 11 is provided with an exhaust pipe 12 by welding.

[0066] It also includes a guide platform 14, the inner surface of the evaporation tank 7 is fixedly connected to the guide platform 14 by welding, the guide platform 14 is arranged on the outer side of the rotating nozzle 16, and the inner surface of the guide platform 14 is arc-shaped;

[0067] It also includes a material guiding component, and the top of the feed pipe 10 is provided with the material guiding component;

[0068] The material guide assembly includes a material guide pipe 1 and a connector 2. The top of the feed pipe 10 is rotatably connected to the lower part of the connector 2 through a rotary seal, and the upper part of the connector 2 is fixedly connected to the material guide pipe 1 by welding.

[0069] It also includes a support frame 6, and the outer surface of the evaporation tank 7 is fixedly connected to the support frame 6 by welding;

[0070] Also included is a controller, the controller being electrically connected to the rotary spraying mechanism;

[0071] The controller model is DATA-7311, and the controller is electrically connected to the rotating driving member 5 .

[0072] The above shows and describes the basic principle, main features and advantages of the utility model, and the standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description and the drawings, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0073] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A nitric acid evaporation device with high evaporation efficiency, characterized in that: It includes an evaporation tank, a rotary spraying mechanism, an auxiliary evaporation pipe, and a heating element. The rotary spraying mechanism is arranged at the top of the evaporation tank. The auxiliary evaporation pipe is installed inside the evaporation tank and is arranged below the rotary spraying mechanism. The heating element is arranged inside both the evaporation tank and the auxiliary evaporation pipe; A discharging assembly is arranged at the upper part of the evaporation tank; The rotary spraying mechanism includes a rotation driving assembly, a feeding pipeline, and a rotary nozzle. The feeding pipeline is rotatably connected to the top of the evaporation tank. The rotation driving assembly is drivingly connected to the feeding pipeline. The rotary nozzle is arranged inside the evaporation tank. The upper part of the rotary nozzle is connected to the bottom of the feeding pipeline. The rotary nozzle is arranged above the auxiliary evaporation pipe.

2. The nitric acid evaporation device with high evaporation efficiency according to claim 1, characterized in that: The rotation driving assembly includes a rotation driving member, a driving wheel, a driven wheel, and a transmission belt. The rotation driving member is installed on the outer surface of the evaporation tank. The driving wheel is drivingly connected to the rotation driving member. The driven wheel is fixedly installed on the outer surface of the feeding pipeline. The driving wheel is connected to the driven wheel through the transmission belt.

3. The nitric acid evaporation device with high evaporation efficiency according to claim 1, characterized in that: An aggregate chamber is arranged at the upper part of the rotary nozzle. A plurality of first liquid spraying channels are arranged around the middle part of the rotary nozzle. The first liquid spraying channels are all communicated with the aggregate chamber. The first liquid spraying channels are all arranged obliquely downward. A plurality of second liquid spraying channels are arranged around the lower part of the aggregate chamber. The second liquid spraying channels are all communicated with the aggregate chamber. The second liquid spraying channels are all arranged obliquely outward.

4. The nitric acid evaporation device with high evaporation efficiency according to claim 3, characterized in that: The top of the auxiliary evaporation pipe is open.

5. The nitric acid evaporation device with high evaporation efficiency according to claim 4, characterized in that: A confluence port is arranged at the bottom of the auxiliary evaporation pipe.

6. The nitric acid evaporation device with high evaporation efficiency according to claim 1, wherein: The discharging assembly includes a collecting ring pipe and a gas guide pipe. A plurality of the gas guide pipes are fixedly connected to the top of the evaporation tank. The gas guide pipes are all connected to the collecting ring pipe. An exhaust pipe is arranged on the outer surface of the collecting ring pipe.

7. The nitric acid evaporation device with high evaporation efficiency according to claim 1, characterized in that: It further includes a guiding platform. The guiding platform is fixedly connected to the inner surface of the evaporation tank. The guiding platform is arranged outside the rotary nozzle. The inner surface of the guiding platform is arc-shaped.

8. The nitric acid evaporation device with high evaporation efficiency according to claim 1, characterized in that: It further includes a material guiding assembly. The material guiding assembly is arranged at the top of the feeding pipeline; The material guiding assembly includes a material guiding pipe and a connecting member. The top of the feeding pipeline is rotatably connected to the lower part of the connecting member through a rotary seal. The upper part of the connecting member is fixedly connected to the material guiding pipe.

9. The nitric acid evaporation device with high evaporation efficiency according to claim 1, characterized in that: It further includes a support frame. The support frame is fixedly connected to the outer surface of the evaporation tank.

10. The nitric acid evaporation device with high evaporation efficiency according to claim 1, characterized in that: It further includes a controller. The controller is electrically connected to the rotary spraying mechanism.

Images