A negative pressure distillation equipment for high-concentration nitric acid waste liquid treatment

Abstract

The utility model discloses a high concentration nitric acid waste liquid treatment is with negative pressure distillation equipment, including distillation jar body, the right side of distillation jar body top is connected with the liquid guide tube, and the right -hand end of liquid guide tube is connected with the left side of the liquid storage jar and sets up, the top of distillation jar body is fixed with motor, and the output end key of motor bottom is connected with the stirring rod, and the stirring rod is located inside distillation jar body, the outside end inside of stirring rod is slidably connected with the cleaning plate, and the outside end of cleaning plate is bonded on the inner wall of distillation jar body and constitutes the cleaning mechanism, and the inner end of cleaning plate is connected with first spring, the inner end of first spring is connected in the inside of stirring rod. This high concentration nitric acid waste liquid treatment is with negative pressure distillation equipment and is installed the cleaning plate, and the stirring rod is rotated through motor drive, thereby making the stirring rod can drive the cleaning plate to clean the impurity adsorbed in the inner wall of distillation jar body and thereby avoids needing manual cleaning operation.

Description

Technical Field

[0001] This utility model relates to the field of high-concentration nitric acid waste liquid treatment technology, specifically a negative pressure distillation device for treating high-concentration nitric acid waste liquid. Background Technology

[0002] In the treatment of high-concentration nitric acid waste liquid, negative pressure distillation equipment is one of the core treatment units, and its functions revolve around reducing treatment energy consumption, improving nitric acid recovery rate, ensuring operational safety, and reducing environmental risks.

[0003] Currently, high-concentration nitric acid waste liquid is treated by low-temperature distillation due to the low temperature, resulting in low efficiency and inconvenience.

[0004] To address the aforementioned deficiencies, a distillation apparatus for high-concentration organic waste liquid, authorized by publication number CN209010177U, is described. This apparatus comprises a nut and a screw, with a motor operating to rotate the screw and move the nut left and right outside the screw, thereby agitating the waste liquid in the corners of the distillation column, achieving thorough mixing and accelerating the separation speed. Furthermore, support legs are provided to support the distillation column.

[0005] In actual use, the above-mentioned device improves the efficiency of distillation by stirring. However, during distillation, the stirred liquid will adhere to the inner wall of the distillation column, and the impurities produced by the distillation of high-concentration organic waste liquid will be adsorbed on the inner wall of the distillation column, thus requiring manual cleaning.

[0006] Therefore, we proposed a negative pressure distillation device for treating high-concentration nitric acid waste liquid, which can effectively solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a negative pressure distillation device for treating high-concentration nitric acid waste liquid, in order to solve the problem mentioned in the background art that the stirred liquid in the current market will adhere to the inner wall of the distillation tower, and then the impurities generated by the distillation of high-concentration organic waste liquid will be adsorbed on the inner wall of the distillation tower, thus requiring manual cleaning.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure distillation device for treating high-concentration nitric acid waste liquid, comprising a distillation tank body, wherein a liquid guide pipe is connected to the top right side of the distillation tank body, and the right end of the liquid guide pipe is connected to the left side of the storage tank.

[0009] A motor is fixed to the top of the distillation tank body, and a stirring rod is keyed to the output end of the motor. The stirring rod is located inside the distillation tank body. A cleaning plate is slidably connected to the outer end of the stirring rod, and the outer end of the cleaning plate is attached to the inner wall of the distillation tank body to form a cleaning mechanism. A first spring is connected to the inner end of the cleaning plate, and the inner end of the first spring is connected to the inside of the stirring rod.

[0010] Preferably, the stirring rod is provided with inclined blocks at equal intervals, and the inclined blocks on the stirring rod are arranged at equal vertical intervals.

[0011] Preferably, a condenser tube is provided on the left side of the liquid guide tube, and the condenser tube is connected to an external power supply device through a wiring harness.

[0012] Preferably, the liquid guide tube is inclined, and a push plate is slidably connected to the middle of the liquid guide tube, and a scraper is fixed to the bottom of the push plate.

[0013] Preferably, the scraper slides against the inner wall of the liquid guide tube, and the scraper is arranged in a circular shape.

[0014] Preferably, a second spring is connected to the right side of the push plate, and the right end of the second spring is connected to the inside of the liquid guide tube.

[0015] Preferably, a slider is fixed in the middle of the push plate, and the outer end of the slider extends into the interior of the groove to form a limiting mechanism, and the groove is opened inside the liquid guide tube.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the negative pressure distillation equipment for treating high-concentration nitric acid waste liquid can avoid adhesion and accelerate condensation; the use of a cleaning plate can clean impurities adsorbed on the inner wall of the distillation tank, thereby avoiding the need for manual operation; and the condenser tube can condense the distilled gas, thereby improving the distillation efficiency. The specific details are as follows:

[0017] (1) A cleaning plate is provided, and the stirring rod is driven by a motor to rotate, so that the stirring rod can drive the cleaning plate to clean the impurities adsorbed on the inner wall of the distillation tank, thereby avoiding the need for manual cleaning.

[0018] (2) A condenser is provided, through which the distilled gas can be condensed, thus condensing into water droplets, thereby achieving rapid treatment of high-concentration nitric acid waste liquid, thereby improving the distillation efficiency.

[0019] (3) A second spring is provided, which is connected to the right side of the push plate and the right end of the second spring is connected to the inside of the liquid guide tube, so that the second spring can limit the push plate, thereby facilitating the reset of the push plate.

[0020] (4) A scraper is provided, which is inclined through the liquid guide tube, and a push plate is slidably connected in the middle of the liquid guide tube. The scraper is fixed at the bottom of the push plate, so that the scraper can clean the water droplets adsorbed inside the liquid guide tube, thereby avoiding waste.

[0021] (5) A slider is provided, which is fixed in the middle of the push plate, and the outer end of the slider extends into the interior of the slide groove to form a limiting mechanism. The slide groove is opened inside the liquid guide tube, so that the slider and the slide groove can be connected to improve the stability of the push plate movement, thereby avoiding the push plate from shaking. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the orthographic section of the present invention;

[0024] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the front section structure of the condenser tube of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection structure between the condenser tube and the liquid guide tube of this utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure between the scraper and the liquid guide tube of this utility model.

[0028] In the diagram: 1. Distillation tank body; 2. Liquid guide pipe; 3. Liquid storage tank; 4. Motor; 5. Stirring rod; 6. Cleaning plate; 7. First spring; 8. Condenser; 9. Push plate; 10. Scraper; 11. Second spring; 12. Sliding block; 13. Slide groove. Detailed Implementation

[0029] 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.

[0030] Example 1: A negative pressure distillation device for treating high-concentration nitric acid waste liquid solves the problem that existing stirred liquids adhere to the inner wall of the distillation column, causing impurities generated during the distillation of high-concentration organic waste liquid to be adsorbed onto the inner wall of the distillation column, thus requiring manual cleaning. The use of cleaning plate 6 avoids the need for manual cleaning of impurities. The following is disclosed:

[0031] A liquid guide pipe 2 is connected to the top right side of the distillation tank body 1, and the right end of the liquid guide pipe 2 is connected to the left side of the storage tank 3; a motor 4 is fixed to the top of the distillation tank body 1, and a stirring rod 5 is keyed to the output end of the motor 4. The stirring rod 5 is located inside the distillation tank body 1. A cleaning plate 6 is slidably connected to the outer end of the stirring rod 5, and the outer end of the cleaning plate 6 is attached to the inner wall of the distillation tank body 1 to form a cleaning mechanism. A first spring 7 is connected to the inner end of the cleaning plate 6, and the inner end of the first spring 7 is connected to the inside of the stirring rod 5. Inclined blocks are provided at equal intervals on the stirring rod 5, and the inclined blocks on the stirring rod 5 are arranged at equal vertical intervals.

[0032] refer to Figures 1 to 3 High-concentration nitric acid waste liquid is transported into the interior of the distillation tank 1. The waste liquid is then heated by a heating element within the tank, enabling negative pressure distillation. A motor 4 drives a stirring rod 5 to rotate, agitating the waste liquid and improving heating efficiency, thus increasing distillation efficiency. The rotation of the stirring rod 5 also drives a cleaning plate 6, which scrapes the inner wall of the tank, cleaning impurities adsorbed on the surface. This eliminates the need for manual cleaning. Furthermore, as the cleaning plate 6 wears down over time, the force of a first spring 7 pushes it to move within the stirring rod 5, ensuring it remains in contact with the inner wall of the tank and extending its lifespan.

[0033] Example 2: A negative pressure distillation device for treating high-concentration nitric acid waste liquid solves the problem that existing distillation methods require the gas to cool naturally to form water droplets, resulting in poor distillation efficiency. The use of a condenser tube 8 can improve distillation efficiency. The following is disclosed:

[0034] A condenser tube 8 is provided on the left side of the liquid guide tube 2, and the condenser tube 8 is connected to an external power supply device through a wiring harness;

[0035] refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The water vapor produced by distillation enters the interior of the liquid guide tube 2, and then the condenser tube 8 cools one side of the liquid guide tube 2, thereby cooling the vapor inside the liquid guide tube 2. After cooling, the vapor forms water droplets, which then drip into the interior of the liquid storage tank 3 by gravity. This avoids the problem of long processing time caused by waiting for the water vapor to cool down, thus improving the efficiency of treating high-concentration nitric acid waste liquid.

[0036] Example 3: A negative pressure distillation device for treating high-concentration nitric acid waste liquid solves the problem that residual water droplets are adsorbed inside the liquid guide pipe 2 after existing distillation, resulting in waste. The use of scraper 10 can avoid water droplet residue. The following is disclosed:

[0037] The liquid guide tube 2 is inclined, and a push plate 9 is slidably connected to the middle of the liquid guide tube 2. A scraper 10 is fixed to the bottom of the push plate 9. The scraper 10 slides against the inner wall of the liquid guide tube 2 and is arranged in a ring shape. A second spring 11 is connected to the right side of the push plate 9, and the right end of the second spring 11 is connected to the inside of the liquid guide tube 2. A slider 12 is fixed to the middle of the push plate 9, and the outer end of the slider 12 extends into the inside of the slide groove 13 to form a limiting mechanism. The slide groove 13 is opened inside the liquid guide tube 2.

[0038] refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 After the high-concentration nitric acid waste liquid is distilled, the push plate 9 is pushed, which in turn causes the scraper 10 to slide inside the liquid guide tube 2. The movement of the scraper 10 scrapes the liquid adsorbed on the inner wall of the liquid guide tube 2, thereby transporting the residual liquid to the inside of the storage tank 3. The movement of the push plate 9 also compresses the second spring 11, causing the push plate 9 to slide inside the slide groove 13, thus improving the stability of the push plate 9's movement. After scraping is completed, the force of the second spring 11 pushes the push plate 9 to reset, making it convenient for the next use.

[0039] Working principle: When using this negative pressure distillation equipment for treating high-concentration nitric acid waste liquid, firstly, refer to... Figures 1 to 3The high-concentration nitric acid waste liquid is transported into the interior of the distillation tank body 1. The high-concentration nitric acid waste liquid is then heated by the heating components inside the distillation tank body 1. The stirring rod 5 is driven by the motor 4 to rotate, thereby agitating the high-concentration nitric acid waste liquid and improving the heating efficiency, which in turn improves the distillation efficiency. The rotation of the stirring rod 5 also causes the cleaning plate 6 to rotate, which cleans the impurities generated by the high-concentration nitric acid waste liquid adsorbed on the inner wall of the distillation tank body 1. Furthermore, the cleaning plate 6 will wear out after long-term use. The force of the first spring 7 will push the cleaning plate 6 to move inside the stirring rod 5, thereby improving the service life of the cleaning plate 6.

[0040] refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The water vapor produced by distillation enters the interior of the liquid guide tube 2, and then the condenser tube 8 can cool one side of the liquid guide tube 2, so that the steam can form water droplets after cooling, and then the water droplets will drip into the interior of the storage tank 3 by gravity, thus improving the efficiency of treating high-concentration nitric acid waste liquid.

[0041] refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 After the high-concentration nitric acid waste liquid is distilled, the liquid adsorbed on the inner wall of the liquid guide tube 2 can be scraped by pushing the push plate 9 and then moving the scraper 10. The movement of the push plate 9 will squeeze the second spring 11, thereby compressing the second spring 11 and improving the stability of the push plate 9. After scraping is completed, the push plate 9 is reset by the force of the second spring 11, which facilitates the next use.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A negative pressure distillation device for treating high-concentration nitric acid waste liquid, comprising a distillation tank body (1), wherein a liquid guide pipe (2) is connected to the top right side of the distillation tank body (1), and the right end of the liquid guide pipe (2) is connected to the left side of the storage tank (3); Its features are, A motor (4) is fixed to the top of the distillation tank body (1), and a stirring rod (5) is keyed to the output end of the motor (4). The stirring rod (5) is located inside the distillation tank body (1). A cleaning plate (6) is slidably connected to the outer end of the stirring rod (5). The outer end of the cleaning plate (6) is attached to the inner wall of the distillation tank body (1) to form a cleaning mechanism. A first spring (7) is connected to the inner end of the cleaning plate (6). The inner end of the first spring (7) is connected to the inside of the stirring rod (5).

2. The negative pressure distillation equipment for treating high-concentration nitric acid waste liquid according to claim 1, characterized in that: The stirring rod (5) is provided with inclined blocks at equal intervals, and the inclined blocks on the stirring rod (5) are arranged at equal intervals from top to bottom.

3. The negative pressure distillation equipment for treating high-concentration nitric acid waste liquid according to claim 1, characterized in that: The liquid guide tube (2) has a condenser tube (8) on its left side, and the condenser tube (8) is connected to an external power supply device through a wire harness.

4. The negative pressure distillation equipment for treating high-concentration nitric acid waste liquid according to claim 1, characterized in that: The liquid guide tube (2) is inclined, and a push plate (9) is slidably connected to the middle of the liquid guide tube (2), and a scraper (10) is fixed to the bottom of the push plate (9).

5. The negative pressure distillation equipment for treating high-concentration nitric acid waste liquid according to claim 4, characterized in that: The scraper (10) slides against the inner wall of the liquid guide tube (2), and the scraper (10) is arranged in a circular shape.

6. The negative pressure distillation equipment for treating high-concentration nitric acid waste liquid according to claim 4, characterized in that: The right side of the push plate (9) is connected to a second spring (11), and the right end of the second spring (11) is connected to the inside of the liquid guide tube (2).

7. The negative pressure distillation equipment for treating high-concentration nitric acid waste liquid according to claim 6, characterized in that: The middle part of the push plate (9) is fixed with a slider (12), and the outer end of the slider (12) extends into the interior of the slide groove (13) to form a limiting mechanism, and the slide groove (13) is opened inside the liquid guide tube (2).

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