Breathing tank to prevent concentrated sulfuric acid from absorbing moisture in concentrated sulfuric acid storage tank

Abstract

The utility model discloses a breathing tank for preventing concentrated sulfuric acid in a concentrated sulfuric acid storage tank from absorbing moisture, comprising a tank body, a horizontal partition is arranged in the tank body, the horizontal partition divides the tank body into an upper tank body and a lower tank body, a breathing port 1 is arranged on the lower tank body, the breathing port 1 is connected to the venting port of the concentrated sulfuric acid storage tank through a pipeline, an air inlet is arranged in the lower tank body, the air inlet passes through the horizontal partition and extends into the upper tank body; a breathing port 2 and a liquid inlet are arranged on the top of the upper tank body, a bent exhaust pipe is arranged in the upper tank body, the exhaust pipe has an inner diameter smaller than the exhaust pipe, the lower pipe opening of the exhaust pipe passes through the horizontal partition and extends into the lower tank body and is higher than the breathing port 2, and the upper pipe opening of the exhaust pipe is lower than the upper pipe opening of the intake pipe; concentrated sulfuric acid is poured into the tank body through the liquid inlet, and the lower pipe opening of the intake pipe and the upper pipe opening of the exhaust pipe are both submerged below the liquid level of the concentrated sulfuric acid. The utility model greatly reduces the risk of concentration reduction of concentrated sulfuric acid during long-term storage and use, and has obvious safety production benefits and economic benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of concentrated sulfuric acid, in particular to a breathing tank which can prevent concentrated sulfuric acid in a concentrated sulfuric acid storage tank from absorbing moisture. Background Art

[0002] Concentrated sulfuric acid is a widely used chemical raw material with strong corrosiveness, strong oxidizing property, water absorption, dehydration, etc. In general, the concentrated sulfuric acid storage tank used by chemical enterprises is a normal pressure storage tank, and a vent connected to the atmosphere is arranged on the top of the storage tank, such as a concentrated sulfuric acid storage tank disclosed in Chinese utility model patent CN207595739U, comprising a tank body, a cover body with a high middle and low surroundings is arranged on the top of the tank body, a vent is arranged at the highest position in the center of the cover body, a first sulfuric acid inlet, a second sulfuric acid inlet and a first inspection manhole are arranged on the cover body; a first sulfuric acid outlet, a second sulfuric acid outlet and a drain port are arranged at the bottom of the tank body; a heating coil is wound around the bottom of the tank body, a hot water inlet is arranged at the lower end of the heating coil, a hot water outlet is arranged at the upper end, and a thermometer for measuring the temperature of sulfuric acid is arranged on the tank body corresponding to the heating coil; a second inspection manhole for maintenance personnel to pass through is also arranged on the tank body. However, since the air contains water vapor, the concentrated sulfuric acid in the concentrated sulfuric acid storage tank will continuously absorb water vapor in the air through the vent, causing the concentration of concentrated sulfuric acid to gradually decrease, thereby affecting the quality and use of concentrated sulfuric acid. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a breathing tank for preventing concentrated sulfuric acid in a concentrated sulfuric acid storage tank from absorbing moisture, thereby greatly reducing the risk of concentration reduction of concentrated sulfuric acid during long-term storage and use, and having obvious safety production benefits and economic benefits.

[0004] The technical solution of the utility model is:

[0005] A breathing tank for preventing concentrated sulfuric acid in a concentrated sulfuric acid storage tank from absorbing moisture comprises a tank body, a horizontal partition is arranged in the middle of the tank body, the horizontal partition divides the tank body into an upper tank body and a lower tank body, a breathing port 1 is arranged on the lower tank body, the breathing port 1 is connected to the venting port of the concentrated sulfuric acid storage tank through a pipeline, an air inlet pipe is vertically arranged in the lower tank body, the air inlet pipe passes through the horizontal partition and extends into the upper tank body; a breathing port 2 and a liquid inlet are arranged on the top of the upper tank body, a bent exhaust pipe is arranged in the upper tank body, the inner diameter of the exhaust pipe is smaller than the air inlet pipe, the lower pipe opening of the exhaust pipe passes through the horizontal partition and extends into the lower tank body and is higher than the breathing port 2, and the upper pipe opening of the exhaust pipe is lower than the upper pipe opening of the air inlet pipe; concentrated sulfuric acid is poured into the tank body through the liquid inlet, and the lower pipe opening of the air inlet pipe and the upper pipe opening of the exhaust pipe are both submerged below the liquid level of the concentrated sulfuric acid.

[0006] Preferably, an overflow port is provided on the lower tank body, the height of the overflow port is between the breathing port 1 and the lower pipe opening of the air inlet pipe, and the overflow port is connected to the liquid inlet of the concentrated sulfuric acid storage tank through a pipeline.

[0007] Preferably, the upper tank body and the lower tank body are respectively provided with drain ports.

[0008] Preferably, the drain port of the upper tank body is located near the horizontal partition, and the drain port of the lower tank body is located at the top of the lower tank body.

[0009] Preferably, the lower pipe opening of the air inlet pipe and the upper pipe opening of the exhaust pipe are both serrated.

[0010] Preferably, the tank body and the pipe are both made of PPH material.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The breathing tank of the utility model has the following advantages: when the concentrated sulfuric acid storage tank is fed, the gas in the concentrated sulfuric acid storage tank is discharged to the atmosphere through the exhaust pipe in the breathing tank to overcome the liquid seal pressure (upper liquid surface); when the concentrated sulfuric acid storage tank is discharged, the air is replenished into the concentrated sulfuric acid storage tank through the air inlet pipe in the breathing tank to overcome the liquid seal pressure (lower liquid surface); and when the concentrated sulfuric acid storage tank is discharged and air is replenished, the air becomes dry air after absorbing moisture through the concentrated sulfuric acid in the lower tank body, which will not affect the concentration of the concentrated sulfuric acid in the concentrated sulfuric acid storage tank, greatly reduces the risk of concentration reduction of the concentrated sulfuric acid during long-term storage and use, and has obvious safety production benefits and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 The utility model is a schematic structural diagram of a breathing tank for preventing concentrated sulfuric acid in a concentrated sulfuric acid storage tank from absorbing moisture.

[0015] In the figure, 101, upper tank body; 102, lower tank body; 2, horizontal partition; 3, breathing port 1; 4, air inlet pipe; 5, breathing port 2; 6, liquid inlet; 7, exhaust pipe; 8, overflow port; 9, drain port. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0017] Example 1

[0018] like Figure 1 As shown, this embodiment provides a breathing tank for preventing concentrated sulfuric acid in a concentrated sulfuric acid storage tank from absorbing moisture, including a tank body made of PPH material, a horizontal partition 2 is arranged in the middle of the tank body, and the horizontal partition 2 divides the tank body into an upper tank body 101 and a lower tank body 102. A breathing port 3 is arranged on the lower tank body 102, and the breathing port 3 is connected to the venting port of the concentrated sulfuric acid storage tank through a pipe made of PPH material, and an air inlet pipe 4 is vertically arranged in the lower tank body 102, and the air inlet pipe 4 passes through the horizontal partition 2 and then extends into the upper tank body 101, and the air inlet pipe 4 and the horizontal partition 2 are well sealed. A breathing port 25 and a liquid inlet 6 are provided on the top of the upper tank body 101, and a bent exhaust pipe 7 is provided inside the upper tank body 101. The inner diameter of the exhaust pipe 7 is smaller than that of the air inlet pipe 4. The lower pipe opening of the exhaust pipe 7 passes through the horizontal partition 2 and extends into the lower tank body 102 and is higher than the breathing port 25. The exhaust pipe 7 and the horizontal partition 2 are well sealed, and the upper pipe opening of the exhaust pipe 7 is lower than the upper pipe opening of the air inlet pipe 4. Concentrated sulfuric acid is poured into the tank body through the liquid inlet 6, and the lower pipe opening of the air inlet pipe 4 and the upper pipe opening of the exhaust pipe 7 are both submerged below the liquid level of the concentrated sulfuric acid.

[0019] At the same time, if Figure 1 As shown, the lower tank body 102 is also provided with an overflow port 8, the height of the overflow port 8 is between the breathing port 3 and the lower pipe port of the air inlet pipe 4, and the overflow port 8 is connected to the liquid inlet 6 of the concentrated sulfuric acid storage tank through a pipeline. When concentrated sulfuric acid is injected from the liquid inlet 6 at the top of the breathing tank, the concentrated sulfuric acid will overflow from the overflow port 8 and return to the concentrated sulfuric acid storage tank for use. The upper tank body 101 is provided with a drain port 9 near the horizontal partition 2 and at the top center of the lower tank body 102, respectively, and the concentrated sulfuric acid in the upper tank body 101 and the lower tank body 102 can be discharged through the drain port 9.

[0020] Working principle:

[0021] Before use, connect the breathing port 3 to the vent of the concentrated sulfuric acid storage tank with a PPH pipe, and inject concentrated sulfuric acid from the liquid inlet 6 on the top of the breathing tank until the concentrated sulfuric acid overflows from the overflow port 8 and returns to the concentrated sulfuric acid storage tank.

[0022] When the concentrated sulfuric acid storage tank is fed, the gas in the concentrated sulfuric acid storage tank enters the breathing tank through the breathing port 103. At this time, the tank is under a slight positive pressure. The slight positive pressure causes the liquid level in the lower tank body 102 to drop, and the liquid level in the air inlet pipe 4 to rise. At the same time, the dimensions of each component in the breathing tank can be designed so that under the slight positive pressure, the liquid level in the lower tank body 102 cannot drop to the lower pipe port of the air inlet pipe 4, so that the gas discharged from the concentrated sulfuric acid storage tank into the breathing tank can only be discharged into the atmosphere from the exhaust pipe 7 through the breathing port 25 on the top of the breathing tank.

[0023] When the concentrated sulfuric acid storage tank is discharged, there will be a slight negative pressure in the breathing tank, which causes the liquid level in the exhaust pipe 7 to rise and the liquid level in the intake pipe 4 to drop, so that the air can only enter the concentrated sulfuric acid storage tank from above the liquid level of the upper tank body 101 through the intake pipe 4. At this time, since the air is first dehydrated by the concentrated sulfuric acid in the lower tank body 102 and becomes dry air when entering from the intake pipe 4, this part of dry air will not affect the concentration of the concentrated sulfuric acid in the concentrated sulfuric acid storage tank after being replenished, thereby preventing the concentration of the concentrated sulfuric acid in the concentrated sulfuric acid storage tank from decreasing after absorbing water.

[0024] When the concentrated sulfuric acid in the concentrated sulfuric acid storage tank is stored for a long time, the air inlet pipe 4 and the exhaust pipe 7 in the breathing tank are sealed by concentrated sulfuric acid liquid, so that the concentrated sulfuric acid in the concentrated sulfuric acid storage tank is completely isolated from the atmosphere, thereby greatly reducing the risk of concentration reduction of concentrated sulfuric acid during long-term storage and use, and the safety production benefits and economic benefits are obvious.

[0025] Example 2

[0026] On the basis of Example 1, Figure 1 As shown, the lower pipe opening of the air intake pipe 4 and the upper pipe opening of the exhaust pipe 7 are both serrated, so that no large bubbles are generated during air intake and exhaust, thereby achieving smooth air intake or exhaust.

[0027] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A breathing tank for preventing concentrated sulfuric acid from absorbing moisture in a concentrated sulfuric acid storage tank, characterized in that: The invention comprises a tank body, wherein a horizontal partition (2) is arranged in the middle of the tank body, and the horizontal partition (2) divides the tank body into an upper tank body (101) and a lower tank body (102); a breathing port (3) is arranged on the lower tank body (102), and the breathing port (3) is connected to the venting port of the concentrated sulfuric acid storage tank through a pipeline; an air inlet pipe (4) is vertically arranged in the lower tank body (102), and the air inlet pipe (4) passes through the horizontal partition (2) and then extends into the upper tank body (101); a breathing port (5) is arranged on the top of the upper tank body (101) and a liquid inlet (6); a bent exhaust pipe (7) is arranged in the upper tank body (101); the inner diameter of the exhaust pipe (7) is smaller than that of the air inlet pipe (4); the lower pipe opening of the exhaust pipe (7) passes through the horizontal partition (2) and then extends into the lower tank body (102) and is higher than the second breathing port (5); the upper pipe opening of the exhaust pipe (7) is lower than the upper pipe opening of the air inlet pipe (4); concentrated sulfuric acid is poured into the tank body through the liquid inlet (6); the lower pipe opening of the air inlet pipe (4) and the upper pipe opening of the exhaust pipe (7) are both submerged below the liquid level of the concentrated sulfuric acid.

2. The breathing tank for preventing concentrated sulfuric acid from absorbing moisture in a concentrated sulfuric acid storage tank as claimed in claim 1, characterized in that: The lower tank body (102) is provided with an overflow port (8), the height of the overflow port (8) is between the breathing port 1 (3) and the lower pipe opening of the air inlet pipe (4), and the overflow port (8) is connected to the liquid inlet (6) of the concentrated sulfuric acid storage tank through a pipeline.

3. The breathing tank for preventing concentrated sulfuric acid from absorbing moisture in a concentrated sulfuric acid storage tank as claimed in claim 1, characterized in that: The upper tank body (101) and the lower tank body (102) are respectively provided with drain ports (9).

4. The breathing tank for preventing concentrated sulfuric acid from absorbing moisture in a concentrated sulfuric acid storage tank as claimed in claim 3, characterized in that: The drain port (9) of the upper tank body (101) is located near the horizontal partition (2), and the drain port (9) of the lower tank body (102) is located at the top of the lower tank body (102).

5. The breathing tank for preventing concentrated sulfuric acid from absorbing moisture in a concentrated sulfuric acid storage tank as claimed in claim 1, characterized in that: The lower pipe opening of the air inlet pipe (4) and the upper pipe opening of the exhaust pipe (7) are both sawtooth-shaped.

6. The breathing tank for preventing concentrated sulfuric acid from absorbing moisture in a concentrated sulfuric acid storage tank as claimed in claim 1, characterized in that: The tank body and the pipeline are both made of PPH material.

Images