Reaction device for reducing nitrite content

Abstract

The utility model discloses a reaction device for reducing nitrite content, which comprises a vacuum tower, a conversion liquid tank is arranged at the lower position of the left side of the vacuum tower, an alkali liquor tank is arranged on the left side of the conversion liquid tank, and the top of the conversion liquid tank and the top of the alkali liquor tank are fixedly connected with liquid conveying pumps. The input end of the liquid conveying pump is respectively communicated with the tops of the conversion liquid tank and the alkali liquid tank, and the output end of the liquid conveying pump is communicated with a feeding pipe. According to the utility model, the vacuum pump is firstly started, gas generated by reaction is pumped away in real time by utilizing the vacuum pump, then the infusion pump is started, raw materials are atomized and sprayed out, the two raw materials are mutually mixed, the mixed raw materials fall onto the baffle plate and flow downwards layer by layer along the baffle plate, and meanwhile, the aeration fan is started to carry out airflow stirring on the raw materials; finally, the reacted raw materials fall into the bottom of the vacuum tower, and the sodium nitrate product can be processed and produced.

Description

Technical Field

[0001] This utility model relates to the field of sodium nitrate production technology, specifically a reaction device for reducing nitrite content. Background Technology

[0002] Sodium nitrate is an inorganic compound, a hygroscopic, colorless, transparent trigonal crystal. It is extremely soluble in water and liquid ammonia, soluble in methanol and ethanol, very slightly soluble in acetone, and slightly soluble in glycerol. It is endothermic when dissolved in water, and the solution cools upon dissolution. The aqueous solution is neutral. It is used in the production of nitric acid and sodium nitrite, as an ingredient in the glass, match, enamel, and ceramic industries, as well as in fertilizers and as a catalyst in the sulfuric acid industry. Currently, the conversion process involves continuously adding mother liquor and nitric acid to a conversion tower to convert sodium nitrite in the mother liquor into sodium nitrate. However, in actual production, due to the short conversion time and large conversion volume, the conversion of sodium nitrite in the mother liquor is not complete, leading to unstable sodium nitrite levels in the sodium nitrate product.

[0003] In the process of sodium nitrate production, a reaction device is required. Traditional reaction devices often use stirring to reduce the sodium nitrite content in the conversion liquid. Due to the short conversion time and large conversion volume, the sodium nitrite in the mother liquor is not completely converted, resulting in unstable sodium nitrite levels in the sodium nitrate product. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a reaction device for reducing nitrite content. This device has the advantage of reducing the nitrite content in sodium nitrate, and solves the problem that traditional reaction devices often use stirring to reduce the sodium nitrite content in the conversion liquid. Due to the short conversion time and large conversion volume, the sodium nitrite in the mother liquor is not completely converted, resulting in unstable sodium nitrite index in the sodium nitrate product.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reaction device for reducing nitrite content, comprising a vacuum tower, a conversion liquid tank located on the lower left side of the vacuum tower, an alkali tank located on the left side of the conversion liquid tank, a pump fixedly connected to the top of both the conversion liquid tank and the alkali tank, the input end of the pump being connected to the top of the conversion liquid tank and the alkali tank respectively, the output end of the pump being connected to a feed pipe, and the right side of the feed pipe extending through to the upper left side of the inner wall of the vacuum tower and connected to an atomizing spray pipe;

[0006] A vacuum pump is installed at the rear of the vacuum tower. The input end of the vacuum pump is connected to a suction pipe, and the other end of the suction pipe is connected to the top of the vacuum tower.

[0007] A baffle plate is fixedly connected to the inner wall of the vacuum tower and at the bottom of the atomizing spray pipe. A discharge pipe is connected to the lower right side of the vacuum tower. The other end of the discharge pipe is connected to a discharge pump. The output end of the discharge pump is connected to a connecting pipe. The bottom of the connecting pipe is connected to a finished product tank.

[0008] As a preferred embodiment of this utility model, an aeration fan is provided on the front side of the vacuum tower, the output end of the aeration fan is connected to a diversion pipe, the rear side of the diversion pipe is connected to an aeration pipe, the rear side of the aeration pipe extends to the rear side of the inner wall of the vacuum tower, and the aeration pipe is located in the liquid storage section of the baffle plate.

[0009] As a preferred embodiment of this utility model, a fine-tuning tank is fixedly connected to the bottom of the discharge pump. The bottom of the fine-tuning tank is fixedly connected to the top of the finished product tank via a bracket. A short pipe is connected to the upper right side of the fine-tuning tank. The right side of the short pipe is connected to the left side of the connecting pipe. A vertical pipe is connected to the middle of the bottom of the fine-tuning tank. The bottom of the vertical pipe is connected to the top of the finished product tank. Solenoid valves are provided on the surface of the short pipe and the vertical pipe, as well as near the bottom of the short pipe in the connecting pipe.

[0010] As a preferred embodiment of this invention, the output end of the vacuum pump is connected to a vacuum water tank.

[0011] As a preferred embodiment of this invention, a baffle plate is fixedly connected to the inner wall of the vacuum tower between the atomizing spray pipe and the baffle plate.

[0012] As a preferred embodiment of this invention, an acid-base detector is fixedly connected to the rear side of the inner wall of the vacuum tower and inside the liquid storage section of the diversion pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model first starts the vacuum pump to remove the gas generated by the reaction in real time. Then, the liquid pump is started to atomize the raw material and spray it out, so that the two raw materials are mixed together. The mixed raw material falls into the baffle plate and flows down layer by layer along the baffle plate. At the same time, the aeration fan is started to stir the raw material. Finally, the raw material that has completed the reaction falls to the bottom of the vacuum tower, at which point the sodium nitrate product can be processed and produced.

[0015] 2. By setting up an aeration mechanism, this utility model can further accelerate the reaction speed of the liquid in the liquid storage section of each baffle plate, making it more convenient for users. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the vacuum tower structure of this utility model;

[0017] Figure 2This is a front sectional view of the vacuum tower structure of this utility model;

[0018] Figure 3 This is a right view of the vacuum tower structure of this utility model;

[0019] Figure 4 This is a rear view of the vacuum tower structure of this utility model;

[0020] Figure 5 This is a bottom view of the vacuum tower structure of this utility model.

[0021] In the diagram: 1. Vacuum tower; 2. Conversion liquid tank; 3. Alkali tank; 4. Infusion pump; 5. Feed pipe; 6. Atomizing spray pipe; 7. Vacuum pump; 8. Extraction pipe; 9. Baffle plate; 10. Discharge pipe; 11. Discharge pump; 12. Connecting pipe; 13. Finished product tank; 14. Aeration blower; 15. Diverter pipe; 16. Aeration pipe; 17. Fine-tuning tank; 18. Short pipe; 19. Vertical pipe; 20. Solenoid valve; 21. Vacuum water tank; 22. Baffle plate; 23. pH detector. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 5 As shown, the present invention provides a reaction device for reducing nitrite content, including a vacuum tower 1, a conversion liquid tank 2 located on the lower left side of the vacuum tower 1, an alkali tank 3 located on the left side of the conversion liquid tank 2, a delivery pump 4 fixedly connected to the top of both the conversion liquid tank 2 and the alkali tank 3, the input end of the delivery pump 4 being connected to the top of the conversion liquid tank 2 and the alkali tank 3 respectively, and the output end of the delivery pump 4 being connected to a feed pipe 5, the right side of the feed pipe 5 penetrating to the upper left side of the inner wall of the vacuum tower 1 and connected to an atomizing spray pipe 6;

[0024] A vacuum pump 7 is installed at the rear of the vacuum tower 1. The input end of the vacuum pump 7 is connected to a suction pipe 8, and the other end of the suction pipe 8 is connected to the top of the vacuum tower 1.

[0025] A baffle plate 9 is fixedly connected to the inner wall of the vacuum tower 1 and at the bottom of the atomizing spray pipe 6. A discharge pipe 10 is connected to the lower right side of the vacuum tower 1. The other end of the discharge pipe 10 is connected to a discharge pump 11. The output end of the discharge pump 11 is connected to a connecting pipe 12. The bottom of the connecting pipe 12 is connected to a finished product tank 13.

[0026] refer to Figure 2 and Figure 3 An aeration blower 14 is installed on the front side of the vacuum tower 1. The output end of the aeration blower 14 is connected to a diversion pipe 15. The rear side of the diversion pipe 15 is connected to an aeration pipe 16. The rear side of the aeration pipe 16 extends to the rear side of the inner wall of the vacuum tower 1. The aeration pipe 16 is located in the liquid storage section of the baffle plate 9.

[0027] As a technical optimization of this utility model, by setting an aeration mechanism, the reaction speed of the liquid in the liquid storage section of each baffle plate 9 can be further accelerated, which makes it more convenient for users.

[0028] refer to Figure 5 The bottom of the discharge pump 11 is fixedly connected to a fine-tuning tank 17. The bottom of the fine-tuning tank 17 is fixedly connected to the top of the finished product tank 13 via a bracket. A short pipe 18 is connected to the upper right side of the fine-tuning tank 17. The right side of the short pipe 18 is connected to the left side of the connecting pipe 12. A vertical pipe 19 is connected to the middle of the bottom of the fine-tuning tank 17. The bottom of the vertical pipe 19 is connected to the top of the finished product tank 13. Solenoid valves 20 are installed on the surface of the short pipe 18 and the vertical pipe 19, as well as on the connecting pipe 12 near the bottom of the short pipe 18.

[0029] As a technical optimization of this utility model, by setting up a fine-tuning tank 17, it is possible to perform secondary alkali addition adjustment on the unqualified conversion liquid when the pH value of the finished product is lower than the qualified pH range, so as to ensure the stability and reliability of the final product quality.

[0030] refer to Figure 4 The output end of vacuum pump 7 is connected to vacuum water tank 21.

[0031] As a technical optimization of this utility model, by setting up a vacuum water tank 21, liquid can be prevented from directly entering the vacuum pump 7, thus avoiding damage to the pump body structure.

[0032] refer to Figure 2 A baffle plate 22 is fixedly connected to the inner wall of the vacuum tower 1 between the atomizing spray pipe 6 and the baffle plate 9.

[0033] As a technical optimization of this utility model, by setting the shielding plate 22, the conversion liquid can be shielded to prevent the conversion liquid from bypassing the first layer baffle plate 9 and entering the next layer.

[0034] refer to Figure 4 A pH detector 23 is fixedly connected to the rear side of the inner wall of vacuum tower 1 and inside the liquid storage section of the diversion pipe 15.

[0035] As a technical optimization of this utility model, by setting up an acid-base detector 23, the acid-base values ​​of the conversion liquid on each layer of baffles 9 in the vacuum tower 1 can be detected in real time, which facilitates the staff to judge the quality of the finished product.

[0036] The working principle and usage process of this utility model are as follows: First, the vacuum pump 7 is started to create a negative pressure state in the vacuum tower 1, continuously removing the gas generated during the reaction. Then, the delivery pump 4 is started to absorb the raw materials in the conversion liquid tank 2 and the alkali tank 3, allowing the raw materials to flow out from the output end of the delivery pump 4. The raw materials are then atomized and sprayed out through the feed pipe 5 and the atomizing spray pipe 6, mixing the two raw materials. The mixed raw materials fall onto the baffle plate 9, flowing downwards layer by layer along the baffle plate 9. Simultaneously, the aeration fan 14 is started, generating airflow at its output end. This airflow is blown into the raw materials in the storage section of the baffle plate 9 through the diversion pipe 15 and the aeration pipe 16, agitating the raw materials. Finally, the reacted raw materials fall to the bottom of the vacuum tower 1, utilizing the acidity and alkalinity... The detector 23 detects the quality of the raw materials. When the finished product is qualified, the discharge pump 11 is started. The input end of the discharge pump 11 generates suction to absorb the qualified product through the discharge pipe 10, so that the qualified product is discharged from the output end of the discharge pump 11 and flows into the finished product tank 13 through the connecting pipe 12. When the finished product is unqualified, the solenoid valve 20 on the connecting pipe 12 is closed and the solenoid valve 20 on the short pipe 18 is opened, so that the unqualified raw material is discharged from the output end of the discharge pump 11 and flows into the fine-tuning tank 17 through the connecting pipe 12 and the short pipe 18. The alkaline solution pre-stored in the fine-tuning tank 17 is used for a secondary reaction. After the reaction is completed, the solenoid valve 20 on the vertical pipe 19 is opened, so that the finished product after the secondary reaction falls into the finished product tank 13 through the vertical pipe 19. At this time, the sodium nitrate product can be processed and produced to reduce the nitrite content in the sodium nitrate.

[0037] In summary, this reaction device for reducing nitrite content, by incorporating a vacuum tower 1, conversion liquid tank 2, alkali liquid tank 3, delivery pump 4, feed pipe 5, atomizing spray pipe 6, vacuum pump 7, extraction pipe 8, baffle plate 9, discharge pipe 10, discharge pump 11, connecting pipe 12, and finished product tank 13, solves the problem that traditional reaction devices, which often use stirring to reduce sodium nitrite content in the conversion liquid, suffer from incomplete conversion of sodium nitrite in the mother liquor due to short conversion time and large conversion volume, resulting in unstable sodium nitrite levels in the sodium nitrate product.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reaction apparatus for reducing nitrite content, comprising a vacuum tower (1), characterized in that: A conversion liquid tank (2) is located on the lower left side of the vacuum tower (1). An alkali liquid tank (3) is located on the left side of the conversion liquid tank (2). A delivery pump (4) is fixedly connected to the top of both the conversion liquid tank (2) and the alkali liquid tank (3). The input end of the delivery pump (4) is connected to the top of the conversion liquid tank (2) and the alkali liquid tank (3) respectively. The output end of the delivery pump (4) is connected to a feed pipe (5). The right side of the feed pipe (5) extends to the upper left side of the inner wall of the vacuum tower (1) and is connected to an atomizing spray pipe (6). A vacuum pump (7) is provided on the rear side of the vacuum tower (1). The input end of the vacuum pump (7) is connected to a suction pipe (8), and the other end of the suction pipe (8) is connected to the top of the vacuum tower (1). A baffle plate (9) is fixedly connected to the inner wall of the vacuum tower (1) and at the bottom of the atomizing spray pipe (6). A discharge pipe (10) is connected to the lower right side of the vacuum tower (1). The other end of the discharge pipe (10) is connected to a discharge pump (11). The output end of the discharge pump (11) is connected to a connecting pipe (12). The bottom of the connecting pipe (12) is connected to a finished product tank (13).

2. The reaction apparatus for reducing nitrite content according to claim 1, characterized in that: An aeration fan (14) is provided on the front side of the vacuum tower (1). The output end of the aeration fan (14) is connected to a diversion pipe (15). The rear side of the diversion pipe (15) is connected to an aeration pipe (16). The rear side of the aeration pipe (16) extends to the rear side of the inner wall of the vacuum tower (1). The aeration pipe (16) is located in the liquid storage section of the baffle plate (9).

3. The reaction apparatus for reducing nitrite content according to claim 1, characterized in that: The bottom of the discharge pump (11) is fixedly connected to a fine-tuning tank (17). The bottom of the fine-tuning tank (17) is fixedly connected to the top of the finished product tank (13) through a bracket. A short pipe (18) is connected to the upper right side of the fine-tuning tank (17). The right side of the short pipe (18) is connected to the left side of the connecting pipe (12). A vertical pipe (19) is connected to the middle of the bottom of the fine-tuning tank (17). The bottom of the vertical pipe (19) is connected to the top of the finished product tank (13). Solenoid valves (20) are provided on the surface of the short pipe (18) and the vertical pipe (19) and near the bottom of the short pipe (18) of the connecting pipe (12).

4. The reaction apparatus for reducing nitrite content according to claim 1, characterized in that: The output end of the vacuum pump (7) is connected to a vacuum water tank (21).

5. The reaction apparatus for reducing nitrite content according to claim 1, characterized in that: A baffle plate (22) is fixedly connected to the inner wall of the vacuum tower (1) between the atomizing spray pipe (6) and the baffle plate (9).

6. The reaction apparatus for reducing nitrite content according to claim 1, characterized in that: A pH detector (23) is fixedly connected to the rear side of the inner wall of the vacuum tower (1) and inside the liquid storage section of the diversion pipe (15).

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