Concentrated nitric acid preparation dilution tank

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a concentrated nitric acid preparation diluting tank. The concentrated nitric acid preparation and dilution tank comprises a tank body and a concentrated nitric acid distribution device arranged in the tank body, and the concentrated nitric acid distribution device is connected with a concentrated nitric acid pipeline; the concentrated nitric acid distribution device comprises a vertically arranged main pipe and a plurality of groups of transversely arranged branch pipes; the branch pipe is connected with the main pipe; a plurality of liquid outlet pipes are further arranged on the branch pipes; and the tank body is also connected with a water inlet pipeline. According to the concentrated nitric acid preparation diluting tank disclosed by the utility model, concentrated nitric acid can be quickly and dispersedly added into the tank, and meanwhile, the problem that heat is excessively concentrated in a concentrated nitric acid diluting process can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field, especially a kind of concentrated nitric acid preparation dilution tank. BACKGROUND

[0002] Concentrated nitric acid is a strong oxidizing substance, when concentrated nitric acid is mixed with water and diluted, a large amount of heat will be released, therefore, when preparing dilute nitric acid with concentrated nitric acid, continuous stirring is needed, and concentrated nitric acid can only be added to water, otherwise violent boiling will occur, causing danger.

[0003] When preparing dilute nitric acid in industry, the above rules must also be followed. For some large-volume preparation tanks, although stirring can also be used for heat dissipation, large-volume preparation tanks require large-scale mixers, and in order to ensure production safety, the stirring speed cannot be too fast, which results in slow heat dissipation and long preparation time.

[0004] It can be seen that the prior art needs to be improved and improved. UTILITY MODEL CONTENT

[0005] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a concentrated nitric acid preparation dilution tank, which aims to improve the heat dissipation efficiency of large-volume preparation tanks when diluting concentrated nitric acid.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A concentrated nitric acid preparation dilution tank, comprising a tank body and a concentrated nitric acid distribution device arranged in the tank body, wherein the concentrated nitric acid distribution device is connected with a concentrated nitric acid pipeline; the concentrated nitric acid distribution device comprises a vertical main pipe and a plurality of horizontal branch pipes; the branch pipes are connected with the main pipe; a plurality of liquid outlet pipes are arranged on the branch pipes; and a water inlet pipeline is connected to the tank body.

[0008] The concentrated nitric acid preparation dilution tank, wherein a plurality of liquid outlet holes are arranged on the liquid outlet pipes.

[0009] The concentrated nitric acid preparation dilution tank, wherein the liquid outlet pipes comprise upper pipes and lower pipes, the upper pipes are arranged above the branch pipes, and the lower pipes are arranged below the branch pipes.

[0010] The concentrated nitric acid preparation dilution tank, wherein a plurality of branch pipes are arranged equidistantly around the main pipe as the axis.

[0011] The concentrated nitric acid preparation dilution tank, further comprising a control device; a delivery pump and a flow valve are arranged on the concentrated nitric acid pipeline; and the delivery pump and the flow valve are electrically connected with the control device.

[0012] The concentrated nitric acid preparation and dilution tank further comprises a circulating pipeline, a first multi-way valve, a second multi-way valve and a liquid outlet pipeline; the first multi-way valve is connected with the outlet end of the concentrated nitric acid pipeline, the inlet end of the concentrated nitric acid distribution device and the outlet end of the circulating pipeline respectively; the first multi-way valve is electrically connected with the control device, so as to make the concentrated nitric acid distribution device communicate with the concentrated nitric acid pipeline or the circulating pipeline; the bottom of the tank body is provided with a liquid outlet; the second multi-way valve is connected with the liquid outlet, the inlet end of the circulating pipeline and the inlet end of the liquid outlet pipeline respectively; the second multi-way valve is electrically connected with the control device, so as to make the liquid outlet communicate with the liquid outlet pipeline or the circulating pipeline.

[0013] The concentrated nitric acid preparation and dilution tank further comprises a circulating pipeline, a first multi-way valve, a second multi-way valve and a liquid outlet pipeline; the first multi-way valve is connected with the outlet end of the concentrated nitric acid pipeline, the inlet end of the concentrated nitric acid distribution device and the outlet end of the circulating pipeline respectively; the first multi-way valve is electrically connected with the control device, so as to make the concentrated nitric acid distribution device communicate with the concentrated nitric acid pipeline or the circulating pipeline; the bottom of the tank body is provided with a liquid outlet; the second multi-way valve is connected with the liquid outlet, the inlet end of the circulating pipeline and the inlet end of the liquid outlet pipeline respectively; the second multi-way valve is electrically connected with the control device, so as to make the liquid outlet communicate with the liquid outlet pipeline or the circulating pipeline.

[0014] The concentrated nitric acid preparation and dilution tank further comprises a circulating pipeline, a first multi-way valve, a second multi-way valve and a liquid outlet pipeline; the first multi-way valve is connected with the outlet end of the concentrated nitric acid pipeline, the inlet end of the concentrated nitric acid distribution device and the outlet end of the circulating pipeline respectively; the first multi-way valve is electrically connected with the control device, so as to make the concentrated nitric acid distribution device communicate with the concentrated nitric acid pipeline or the circulating pipeline; the bottom of the tank body is provided with a liquid outlet; the second multi-way valve is connected with the liquid outlet, the inlet end of the circulating pipeline and the inlet end of the liquid outlet pipeline respectively; the second multi-way valve is electrically connected with the control device, so as to make the liquid outlet communicate with the liquid outlet pipeline or the circulating pipeline.

[0015] The concentrated nitric acid preparation and dilution tank further comprises a circulating pipeline, a first multi-way valve, a second multi-way valve and a liquid outlet pipeline; the first multi-way valve is connected with the outlet end of the concentrated nitric acid pipeline, the inlet end of the concentrated nitric acid distribution device and the outlet end of the circulating pipeline respectively; the first multi-way valve is electrically connected with the control device, so as to make the concentrated nitric acid distribution device communicate with the concentrated nitric acid pipeline or the circulating pipeline; the bottom of the tank body is provided with a liquid outlet; the second multi-way valve is connected with the liquid outlet, the inlet end of the circulating pipeline and the inlet end of the liquid outlet pipeline respectively; the second multi-way valve is electrically connected with the control device, so as to make the liquid outlet communicate with the liquid outlet pipeline or the circulating pipeline.

[0016] Beneficial effects: the concentrated nitric acid preparation and dilution tank is provided, concentrated nitric acid is evenly dispersed into the tank body by a concentrated nitric acid distribution device similar to a fishbone, a plurality of liquid outlet pipelines are adopted to add the concentrated nitric acid, local overheating is effectively avoided, and heat loss is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the concentrated nitric acid preparation and dilution tank.

[0018] Figure 2 It is a structural schematic view of the concentrated nitric acid distribution device.

[0019] Main element symbol explanation: 1-tank body, 2-nitric acid distribution device, 21-main pipe, 22-branch pipe, 23-liquid outlet pipeline, 3-water inlet pipeline, 231-upper pipe, 232-lower pipe, 4-conveying pump, 5-flow valve, 6-circulating pipeline, 7-first multi-way valve, 8-second multi-way valve, 9-liquid outlet pipeline, 11-liquid outlet, 61-circulating pump, 12-cooling coil, 13-cooling water pipeline, 14-weight sensor, 15-concentrated nitric acid pipeline. DETAILED DESCRIPTION

[0020] The concentrated nitric acid preparation and dilution tank is provided, the purpose, technical scheme and effect of the utility model are more clear and definite, and the utility model is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0021] In the description of the utility model, it needs to understand that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, and a particular orientation configuration and operation, therefore, it can not be understood as a limitation on the utility model. In addition, "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, "a plurality of" means two or more, unless otherwise specified.

[0022] Please refer to Figure 1 And Figure 2 The utility model provides a kind of concentrated nitric acid preparation dilution tank, wherein, including tank body 1 and the concentrated nitric acid distribution device 2 being arranged in tank body 1, the concentrated nitric acid distribution device 2 is connected with concentrated nitric acid pipeline 15;The concentrated nitric acid distribution device 2 includes vertically arranged main pipe 21 and multiple groups of transversely arranged branch pipes 22;The branch pipe 22 is connected with main pipe 21;Multiple liquid outlet pipes 23 are further provided on the branch pipe 22;Water inlet pipeline 3 is further connected on the tank body 1.Specifically, the concentrated nitric acid distribution device 2 is fishbone-like, expands from center to periphery, and a small amount of concentrated nitric acid is continuously released to each part in the tank through multiple liquid outlet pipes 23 to mix with water, which can effectively avoid local overheating and boiling, and improve dilution efficiency.During preparation, water is first added to tank body 1 through water inlet pipeline 3, and then concentrated nitric acid is injected into concentrated nitric acid distribution device 2 through concentrated nitric acid pipeline 15.Concentrated nitric acid first enters main pipe 21, then flows to each branch pipe 22, and finally flows out from the liquid outlet pipe 23 on each branch pipe 22.

[0023] In one embodiment, multiple liquid outlet holes are provided on the liquid outlet pipe 23.By providing multiple liquid outlet holes, the release of concentrated nitric acid can be more dispersed, reducing excessive concentration of heat.

[0024] Please refer to Figure 2 In one embodiment, the liquid outlet pipe 23 includes upper pipe 231 and lower pipe 232, the upper pipe 231 is arranged above the branch pipe 22;The lower pipe 232 is arranged below the branch pipe 22. Preferably, multiple liquid outlet holes are provided on the upper pipe 231 and the lower pipe 232, by extending above and below the branch pipe 22, the liquid outlet holes can reach each area in the tank, and the mixing of concentrated nitric acid and water can be more dispersed. The generated heat can also be better diffused outward.

[0025] Preferably, multiple groups of branch pipes 22 are circumferentially equidistantly arranged with main pipe 21 as the axis. Please refer to Figure 2In one embodiment, the concentrated nitric acid distribution device 2 comprises 6 groups of branch pipes 22, each group of branch pipes 22 has 7 branch pipes 22, and 5 liquid outlet pipes 23 are further arranged on each branch pipe 22 to form a liquid outlet pipe network covering the tank 1, thereby effectively avoiding excessive concentration of the concentrated nitric acid.

[0026] Please refer to Figure 1 In one embodiment, the concentrated nitric acid preparation and dilution tank further comprises a control device; the concentrated nitric acid pipeline 15 is provided with a delivery pump 4 and a flow valve 5; the delivery pump 4 and the flow valve 5 are electrically connected with the control device. Specifically, in the initial stage of preparation, the water level in the tank is low, so the flow valve 5 is needed to realize the addition of concentrated nitric acid with low flow. When the liquid level gradually increases, the flow can be gradually increased.

[0027] Please refer to Figure 1 In one embodiment, the concentrated nitric acid preparation and dilution tank further comprises a circulating pipeline 6, a first multi-way valve 7, a second multi-way valve 8, and a liquid outlet pipe 23; the first multi-way valve 7 is connected with the outlet end of the concentrated nitric acid pipeline 15, the inlet end of the concentrated nitric acid distribution device 2, and the outlet end of the circulating pipeline 6, respectively; the first multi-way valve 7 is electrically connected with the control device, and is used to make the concentrated nitric acid distribution device 2 communicate with the concentrated nitric acid pipeline 15 or the circulating pipeline 6; the bottom of the tank 1 is provided with a liquid outlet 11; the second multi-way valve 8 is connected with the liquid outlet 11, the inlet end of the circulating pipeline 6, and the inlet end of the liquid outlet pipe 23, respectively; the second multi-way valve is electrically connected with the control device, and is used to make the liquid outlet 11 communicate with the liquid outlet pipe 23 or the circulating pipeline 6.

[0028] When the addition of concentrated nitric acid is completed, there is still a lot of concentrated nitric acid in the concentrated nitric acid distribution device 2 that has not been released into the tank, at this time, the circulating pipeline 6 is needed to inject the dilute nitric acid in the tank into the concentrated nitric acid distribution device 2, so that the residual concentrated nitric acid in the concentrated nitric acid distribution device 2 is discharged, mixed sufficiently, and the concentration of the prepared dilute nitric acid is ensured to be accurate. When the concentrated nitric acid is injected, the first multi-way valve 7 makes the concentrated nitric acid pipeline 15 communicate with the concentrated nitric acid distribution device 2, and the second multi-way valve 8 is closed. After the injection of concentrated nitric acid is completed, the first multi-way valve 7 makes the outlet end of the circulating pipeline 6 communicate with the concentrated nitric acid distribution device 2; and the second multi-way valve 8 makes the inlet end of the circulating pipeline 6 communicate with the liquid outlet 11.

[0029] Specifically, the circulating pipeline 6 is provided with a circulating pump 61. The circulating pump 61 is electrically connected with the control device, and is used to make the liquid in the circulating pipeline 6 flow.

[0030] Please refer to Figure 1 In one embodiment, the tank 1 is provided with a cooling coil 12, and the cooling coil 12 is connected with a cooling water pipeline 13. By arranging the cooling coil 12, the heat generated in the tank can be quickly removed, and the temperature in the tank is prevented from being too high.

[0031] Please refer to Figure 1 In an embodiment, a weight sensor 14 is arranged below the tank 1, and the weight sensor 14 is electrically connected with the control device. Compared with preparing the specified concentration of dilute nitric acid by controlling the volume of concentrated nitric acid and water, the concentration of dilute nitric acid prepared by controlling the weight of concentrated nitric acid and water is more accurate. This is because the volume of liquid is affected by temperature and the volume of entrained gas, resulting in that the volume detection of liquid is often inaccurate. By using the weight sensor 14, the weight increase of the tank 1 can be directly measured, so that the addition amount of water and concentrated nitric acid can be accurately determined.

[0032] In summary, the concentrated nitric acid preparation and dilution tank of the utility model can effectively avoid the problem of violent boiling in the dilution process by arranging the concentrated nitric acid distribution device 2, using multiple outwardly extending branch pipes 22 and liquid outlet pipes 23 to realize the dilution of concentrated nitric acid, and speeding up the heat dissipation and improving the preparation speed.

[0033] It can be understood that for those skilled in the art, equivalent replacement or change can be made according to the technical scheme and the utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the claims attached to the utility model.

Claims

1. A concentrated nitric acid preparation dilution tank characterized by, The application relates to a concentrated nitric acid distribution device, which comprises a tank body and a concentrated nitric acid distribution device arranged in the tank body and connected with a concentrated nitric acid pipeline; the concentrated nitric acid distribution device comprises a vertically arranged main pipe and a plurality of groups of transversely arranged branch pipes; the branch pipes are connected with the main pipe; a plurality of liquid outlet pipes are further arranged on the branch pipes; and a water inlet pipeline is further connected with the tank body.

2. The concentrated nitric acid formulation dilution tank of claim 1, wherein, A plurality of liquid outlet holes are arranged on the liquid outlet pipes.

3. The concentrated nitric acid formulation dilution tank of claim 2, wherein, The liquid outlet pipes comprise upper pipes and lower pipes, the upper pipes are arranged above the branch pipes, and the lower pipes are arranged below the branch pipes.

4. The concentrated nitric acid formulation dilution tank of claim 1, wherein, The plurality of groups of branch pipes are circumferentially equidistantly arranged around the main pipe.

5. The concentrated nitric acid formulation dilution tank of claim 1, wherein, The application further comprises a control device; a delivery pump and a flow valve are arranged on the concentrated nitric acid pipeline; and the delivery pump and the flow valve are electrically connected with the control device.

6. The concentrated nitric acid formulation dilution tank of claim 5, wherein, The application further comprises a circulating pipeline, a first multi-way valve, a second multi-way valve and a liquid outlet pipeline; the first multi-way valve is respectively connected with an outlet end of the concentrated nitric acid pipeline, an inlet end of the concentrated nitric acid distribution device and an outlet end of the circulating pipeline; the first multi-way valve is electrically connected with the control device and is used for making the concentrated nitric acid distribution device communicate with the concentrated nitric acid pipeline or the circulating pipeline; a liquid outlet is arranged at the bottom of the tank body; the second multi-way valve is respectively connected with the liquid outlet, an inlet end of the circulating pipeline and an inlet end of the liquid outlet pipeline; the second multi-way valve is electrically connected with the control device and is used for making the liquid outlet communicate with the liquid outlet pipeline or the circulating pipeline.

7. The concentrated nitric acid formulation dilution tank of claim 6, wherein, A circulating pump is arranged on the circulating pipeline.

8. The concentrated nitric acid formulation dilution tank of claim 1, wherein, Cooling coils are arranged outside the tank body and connected with a cooling water pipeline.

9. The concentrated nitric acid formulation dilution tank of claim 1, wherein, A weight sensor is arranged below the tank body and electrically connected with the control device.

Images