Condensation and separation bleaching device for nitric acid production

Abstract

The utility model relates to the technical field of nitric acid condensation and separation bleachers, in particular to a condensation and separation bleacher for nitric acid production, which comprises a bleacher body, the bottom of the bleacher body is fixedly connected with a bottom plate, and one side of the top of the bottom plate is fixedly connected with a box body. The inner wall of the outer side of one end of the box body is fixedly connected with the upper side and the lower side of the outer wall of a curved pipe respectively, a shell is fixedly connected to the inner wall of the top of the box body, the inner wall of the shell is fixedly connected with a base preset outside an exhaust fan, and a pipe body is fixedly connected to a discharging port of the bleaching device body; and one end of the pipe body is fixedly connected with a feeding pipe of the first conveying pump. Through cooperation of the box body, the curved pipe and the scraping structure, when the device is used, a motor can drive a threaded rod to rotate, the threaded rod drives a vertical block to move left and right, the vertical block drives a scraping plate to move left and right, the scraping plate scrapes off nitric acid attached after condensation, the attached nitric acid is conveniently scraped off, and waste caused by nitric acid residues is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of nitric acid condensation separation bleaching devices, in particular to a condensation separation bleaching device for nitric acid production. Background Art

[0002] Nitric acid is a chemical raw material used in the production of nitric acid. Most of the time, dilute nitric acid is used as the raw material to prepare concentrated sulfuric acid through distillation and concentration. During the dilute sulfuric acid distillation and concentration process, some nitrogen oxides enter the concentrated nitric acid, causing the color of the finished acid to turn yellow, affecting product quality.

[0003] There is a condensation separation bleaching device for nitric acid production (application number: 202121243816.9) that enhances the condensation and separation effect of the condensation separation bleaching device, is beneficial to the condensation and separation of nitric acid and gas, and improves the quality of nitric acid. The above-mentioned problem still exists. When bleaching and condensing nitric acid, nitric acid is injected into the bleaching device body, and after bleaching is completed, it is transported to the condensation box. By condensing the nitric acid, the separation of gas and nitric acid is achieved. However, during condensation, part of the nitric acid is easily attached to the outer wall of the curved pipe, which is not convenient to scrape off the attached nitric acid, and thus easily leads to nitric acid residue, resulting in waste. Moreover, when condensing nitric acid, cooling water is introduced into the interior of the curved pipe. When the cooling water circulates in the curved pipe, it is not convenient to filter the cooling water, and thus impurities are easily introduced into the curved pipe, causing blockage of the curved pipe, thereby affecting the condensation effect. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art that it is inconvenient to scrape off the attached nitric acid, which easily leads to nitric acid residue and waste, and it is inconvenient to filter the cooling water, which easily allows impurities to enter the curved pipe and cause blockage of the curved pipe, thereby affecting the condensation effect. A condensation separation bleaching device for nitric acid production is proposed.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A condensation separation bleaching device for nitric acid production is designed, comprising a bleaching device body, wherein the bottom of the bleaching device body is fixedly connected to a bottom plate, the top side of the bottom plate is fixedly connected to a box body, the outer inner wall of one end of the box body is respectively fixedly connected to the upper and lower sides of the outer wall of the curved pipe, the top inner wall of the box body is fixedly connected to a shell, the inner wall of the shell is fixedly connected to a preset base outside the exhaust fan, the discharge port of the bleaching device body is fixedly connected to a pipe body, one end of the pipe body is fixedly connected to the feed pipe of a delivery pump 1, one end of the delivery pump 1 is fixedly connected to the lower side of the box body, the discharge pipe of the delivery pump 1 is fixedly connected to the upper inner wall of one side of the box body, and a scraping structure is provided on one side of the box body.

[0007] Preferably, the scraping structure includes a threaded rod, one side of the outer wall of the threaded rod is rotatably connected to the upper inner wall of one side of the box body through a bearing, one end of the threaded rod is fixedly connected to the output end of the motor, one end of the motor is fixedly connected to the upper side of the box body, one side of the outer wall of the threaded rod is threadedly connected to a vertical block, the lower inner wall of the vertical block is slidably engaged with a sliding rod, one end of the sliding rod is fixedly connected to the upper side of the inner wall of the box body, and the bottom of the vertical block is fixedly connected to a scraper, and the inner wall of the scraper fits against one side of the outer wall of the curved pipe.

[0008] Preferably, a shell is fixedly connected to the upper side of one side of the box body, and an inner wall of one end of the shell is fixedly connected to the outlet pipe of the second delivery pump.

[0009] Preferably, a filter screen is fitted in the gap of the inner wall on one side of the top of the shell.

[0010] Preferably, a rod is gapped in the groove above one side of the filter screen, a square plate is gapped in one side of the outer wall of the rod, and the bottom of the square plate is fixedly connected to one side of the top of the shell.

[0011] Preferably, a spring is gap-fitted on one side of the outer wall of the insertion rod, and the left and right ends of the spring are fixedly connected to one end of the square plate and one side of the outer wall of the insertion rod respectively.

[0012] The utility model provides a condensation separation bleaching device for nitric acid production, which has the following beneficial effects: through the cooperation of the box body, the curved pipe and the scraping structure, when the device is in use, the motor drives the threaded rod to rotate, the threaded rod drives the vertical block to move left and right, and the vertical block drives the scraper to move left and right, and the scraper scrapes off the nitric acid attached after condensation, which facilitates the scraping off of the attached nitric acid and avoids waste caused by residual nitric acid;

[0013] Through the cooperation of the box, shell, filter, square plate, plug rod and spring, when the device is in use, the filter can be inserted into the inner wall of the shell, and the spring drives the plug rod to move to the left, so that the plug rod is inserted into the groove above one side of the filter, thereby fixing the filter. The filter can filter impurities in the cooling water, facilitate the filtering of the cooling water, prevent impurities from entering the curved pipe, cause blockage of the curved pipe, and thus avoid affecting the condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the bottom plate, box body and inclined tube structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the threaded rod, vertical block and sliding rod structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the box, threaded rod and motor structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the box, shell and exhaust fan structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the square plate, insert rod and spring structure of the utility model.

[0020] In the figure: 1. bottom plate, 2. scraping structure, 2a1. threaded rod, 2a2. motor, 2a3. vertical block, 2a4. sliding rod, 2a5. scraper, 2b1. inclined cylinder, 3. bleaching device body, 4. pipe body, 5. delivery pump 1, 6. box body, 7. curved pipe, 8. outer shell, 9. filter screen, 10. delivery pump 2, 11. square plate, 12. plug rod, 13. spring, 14. shell, 15. exhaust fan. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Example 1: Refer to the attached Figure 1-6 : In this embodiment, a condensation separation bleaching device for nitric acid production includes a bleaching device body 3, the bottom of the bleaching device body 3 is fixedly connected to a bottom plate 1, the model of the bleaching device body 3 is determined according to actual usage, the top side of the bottom plate 1 is fixedly connected to a box body 6, the outer inner wall of one end of the box body 6 is fixedly connected to the upper and lower sides of the outer wall of the curved pipe 7 respectively, the top inner wall of the box body 6 is fixedly connected to a shell 14, the inner wall of the shell 14 is fixedly connected to the external preset base of the exhaust fan 15, and the model of the exhaust fan 15 is determined according to actual usage.

[0023] The discharge port of the bleaching device body 3 is fixedly connected to the tube body 4, one end of the tube body 4 is fixedly connected to the feed pipe of the delivery pump 5, the model of the delivery pump 5 is determined according to the actual usage, one end of the delivery pump 5 is fixedly connected to the lower side of the box body 6, the discharge pipe of the delivery pump 5 is fixedly connected to the upper inner wall of one side of the box body 6, the upper side of the box body 6 is fixedly connected with the outer shell 8, the inner wall of one end of the outer shell 8 is fixedly connected to the water outlet pipe of the delivery pump 2 10, and the model of the delivery pump 2 10 is determined according to the actual usage.

[0024] A filter screen 9 is fitted in the gap on the inner wall of the top side of the shell 8. The material and mesh number of the filter screen 9 are determined according to actual usage. A rod 12 is fitted in the gap in the upper groove on one side of the filter screen 9. A square plate 11 is fitted in the gap on the outer wall of the rod 12. The bottom of the square plate 11 is fixedly connected to the top side of the shell 8. A spring 13 is fitted in the gap on the outer wall of the rod 12. The left and right ends of the spring 13 are respectively fixedly connected to one end of the square plate 11 and one side of the outer wall of the rod 12. The spring 13 gives the rod 12 a leftward force. A scraping structure 2 is provided on one side of the box body 6. The scraping structure 2 facilitates scraping off the attached nitric acid to avoid waste caused by residual nitric acid.

[0025] The scraping structure 2 includes a threaded rod 2a1, and one side of the outer wall of the threaded rod 2a1 is rotatably connected to the upper inner wall of one side of the box body 6 through a bearing. One end of the threaded rod 2a1 is fixedly connected to the output end of the motor 2a2. The model of the motor 2a2 is determined according to the actual usage. One end of the motor 2a2 is fixedly connected to the upper side of one side of the box body 6. One side of the outer wall of the threaded rod 2a1 is threadedly connected to a vertical block 2a3. The lower inner wall of the vertical block 2a3 is slidably engaged with a slide rod 2a4. The slide rod 2a4 plays a limiting role when the vertical block 2a3 is forced to move left and right. One end of the slide rod 2a4 is fixedly connected to the upper side of the inner wall of the box body 6, and the bottom of the vertical block 2a3 is fixedly connected to a scraper 2a5. The inner wall of the scraper 2a5 fits against one side of the outer wall of the curved pipe 7, which is convenient for scraping off the attached nitric acid and avoiding waste caused by residual nitric acid.

[0026] Working principle:

[0027] When bleaching and condensing nitric acid:

[0028] Insert the filter screen 9 into the inner wall of the shell 8, and the spring 13 drives the insertion rod 12 to move to the left, so that the insertion rod 12 is inserted into the groove on the upper side of the filter screen 9, thereby fixing the filter screen 9. The filter screen 9 can filter impurities in the cooling water, and inject nitric acid into the interior of the bleaching device body 3. The bleaching device body 3 bleaches the nitric acid. The discharge port of the bleaching device body 3 is opened, and the delivery pump 1 5 starts to work, and then the bleached nitric acid is pumped into the interior of the box body 6. The delivery pump 2 10 starts to work, and the delivery pump 2 10 pumps the external cooling water into the bleaching device body 3. The water is pumped out, and the cooling water circulates on the inner wall of the curved pipe 7, thereby realizing the condensation of nitric acid. At the same time, the exhaust fan 15 starts to work, and the nitric acid falls to the bottom of the box 6. The gas is pumped upward by the exhaust fan 15, thereby realizing gas-liquid separation. The motor 2a2 starts to work, and the motor 2a2 drives the threaded rod 2a1 to rotate. The threaded rod 2a1 drives the vertical block 2a3 to move left and right. The vertical block 2a3 drives the scraper 2a5 to move left and right. The scraper 2a5 scrapes off the nitric acid attached after condensation, opens the valve at the bottom of the box 6, and then discharges the nitric acid.

[0029] Example 2: Refer to the attached Figure 1-6: In this embodiment, a condensation separation bleaching device is provided for nitric acid production, wherein the scraping structure 2 may further include an inclined cylinder 2b1, the upper portion of the outer wall of the inclined cylinder 2b1 is fixedly connected to the lower portion of the inner wall of the box body 6, and the bottom portion of the inclined cylinder 2b1 is fixedly connected to the bottom portion of the inner wall of the box body 6.

[0030] Working principle:

[0031] The arrangement of the inclined cylinder 2b1 facilitates the gathering of nitric acid toward the center, thereby facilitating the complete discharge of the nitric acid.

[0032] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A condensation separation bleaching device for nitric acid production, comprising a bleaching device body (3), characterized in that: The bottom of the bleaching device body (3) is fixedly connected to a bottom plate (1), and the top side of the bottom plate (1) is fixedly connected to a box body (6). The outer inner wall of one end of the box body (6) is fixedly connected to the upper and lower outer walls of the curved pipe (7), respectively. The top inner wall of the box body (6) is fixedly connected to a shell (14), and the inner wall of the shell (14) is fixedly connected to a base preset outside the exhaust fan (15). The discharge port of the bleaching device body (3) is fixedly connected to a pipe body (4), one end of the pipe body (4) is fixedly connected to the feed pipe of a delivery pump (5), one end of the delivery pump (5) is fixedly connected to the lower side of the box body (6), and the discharge pipe of the delivery pump (5) is fixedly connected to the upper inner wall of one side of the box body (6). A scraping structure (2) is provided on one side of the box body (6).

2. The condensation separation bleaching device for nitric acid production according to claim 1, characterized in that: The scraping structure (2) comprises a threaded rod (2a1), one side of the outer wall of the threaded rod (2a1) is rotatably connected to the upper inner wall of one side of the box body (6) through a bearing, one end of the threaded rod (2a1) is fixedly connected to the output end of the motor (2a2), one end of the motor (2a2) is fixedly connected to the upper side of one side of the box body (6), one side of the outer wall of the threaded rod (2a1) is threadedly connected to a vertical block (2a3), the lower inner wall of the vertical block (2a3) is slidably engaged with a sliding rod (2a4), one end of the sliding rod (2a4) is fixedly connected to the upper side of the inner wall of the box body (6), the bottom of the vertical block (2a3) is fixedly connected to a scraper (2a5), and the inner wall of the scraper (2a5) is in contact with one side of the outer wall of the curved pipe (7).

3. The condensation separation bleaching device for nitric acid production according to claim 1, characterized in that: An outer shell (8) is fixedly connected to the upper side of one side of the box body (6), and an inner wall of one end of the outer shell (8) is fixedly connected to the outlet pipe of the second delivery pump (10).

4. The condensation separation bleaching device for nitric acid production according to claim 3, characterized in that: A filter screen (9) is fitted in the inner wall gap on one side of the top of the housing (8).

5. The condensation separation bleaching device for nitric acid production according to claim 4, characterized in that: An insert rod (12) is fitted in the gap of the groove above one side of the filter screen (9), a square plate (11) is fitted in the gap of one side of the outer wall of the insert rod (12), and the bottom of the square plate (11) is fixedly connected to one side of the top of the housing (8).

6. The condensation separation bleaching device for nitric acid production according to claim 5, characterized in that: A spring (13) is gap-fitted on one side of the outer wall of the insertion rod (12), and the left and right ends of the spring (13) are fixedly connected to one end of the square plate (11) and one side of the outer wall of the insertion rod (12), respectively.

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