CN219849360U - Sodium hydroxide solution dilution control system for hydrochloric acid synthetic furnace - Google Patents
Sodium hydroxide solution dilution control system for hydrochloric acid synthetic furnace Download PDFInfo
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- CN219849360U CN219849360U CN202320353312.5U CN202320353312U CN219849360U CN 219849360 U CN219849360 U CN 219849360U CN 202320353312 U CN202320353312 U CN 202320353312U CN 219849360 U CN219849360 U CN 219849360U
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- CN
- China
- Prior art keywords
- sodium hydroxide
- storage tank
- hydrochloric acid
- mixer
- acid synthesis
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title claims abstract description 153
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000000243 solution Substances 0.000 title claims abstract description 28
- 239000012895 dilution Substances 0.000 title claims abstract description 15
- 238000010790 dilution Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000011259 mixed solution Substances 0.000 claims abstract description 30
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 26
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims description 18
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 19
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model belongs to the technical field of sodium hydroxide solution dilution, and particularly relates to a sodium hydroxide solution dilution control system for a hydrochloric acid synthesis furnace, which comprises the hydrochloric acid synthesis furnace, a sodium hydroxide storage tank and a water storage tank, wherein the sodium hydroxide storage tank and the water storage tank are respectively connected with a mixer, the mixer is connected with the hydrochloric acid synthesis furnace, a first regulating valve is arranged between the sodium hydroxide storage tank and the mixer, a second regulating valve is arranged between the water storage tank and the mixer, a third regulating valve and a detector are arranged between the mixer and the hydrochloric acid synthesis furnace, and the detector controls the opening and closing of the first regulating valve, the second regulating valve and the third regulating valve. The PH value of the mixed solution can be automatically adjusted by arranging the adjusting valves associated with the detectors on the sodium hydroxide storage tank and the water storage tank respectively, so that the PH value of the mixed solution is always stable within the range of 8+/-0.2, and the problem of equipment corrosion caused by overhigh or overlow PH value of the mixed solution is avoided.
Description
Technical Field
The utility model belongs to the technical field of sodium hydroxide solution dilution, and particularly relates to a sodium hydroxide solution dilution control system for a hydrochloric acid synthesis furnace.
Background
The byproduct steam of the four-in-one hydrochloric acid synthesis furnace needs to be mixed aqueous solution with the pH value of 7-9.5, a great amount of pure water is usually introduced into a mixing container in the current operation in industry, then 32 mass percent of sodium hydroxide aqueous solution is manually added into the mixing container for pH adjustment, and then the mixed aqueous solution is introduced into the four-in-one hydrochloric acid synthesis furnace.
In the actual operation process, as the mixed aqueous solution in the mixing container is continuously introduced into the four-in-one hydrochloric acid synthesis furnace, the subsequent pure water continuously flows into the mixing container, so that the pH value of the mixed solution in the mixing container is continuously reduced, when the pH value is close to 7, the 32% mass fraction of sodium hydroxide aqueous solution is added into the mixing container again to carry out pH adjustment, thus repeatedly causing the problems that the initial pH value of the mixed aqueous solution is higher and the pH value of the mixed aqueous solution is gradually reduced in the middle and later stages, the pH value of the mixed aqueous solution is unstable, the graphite blocks can be corroded by the too high pH value, the furnace body shell can be corroded by the too low pH value, and potential safety hazards exist in the long-term use process.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a sodium hydroxide solution dilution control system for a hydrochloric acid synthesis furnace, which can automatically adjust the PH value of mixed solution by arranging adjusting valves associated with a detector on a sodium hydroxide storage tank and a water storage tank respectively, so that the PH value of the mixed solution is always stable within the range of 8+/-0.2, and the problem of equipment corrosion caused by overhigh or overlow PH value of the mixed solution is avoided.
The utility model adopts the specific technical scheme that:
the utility model provides a sodium hydroxide solution dilution control system that hydrochloric acid synthetic furnace used, includes hydrochloric acid synthetic furnace, sodium hydroxide storage jar and water storage jar are connected with the blender respectively, the blender is connected with the hydrochloric acid synthetic furnace, be provided with first governing valve between sodium hydroxide storage jar and the blender, be provided with the second governing valve between water storage jar and the blender, be provided with third governing valve and detector between blender and the hydrochloric acid synthetic furnace, the detector controls opening and shutting of first governing valve, second governing valve and third governing valve.
The mixer comprises a main pipeline and a branch pipeline, wherein the sodium hydroxide storage tank is connected with the branch pipeline, the water storage tank is connected with the main pipeline, the branch pipeline penetrates through one side wall of the main pipeline and is fixed on the other side wall of the main pipeline, a discharging hole is formed in the side wall of the branch pipeline, which is positioned in the main pipeline, and the discharging hole is positioned on one side of the branch pipeline, which is opposite to the feeding hole of the main pipeline.
The branch pipelines and the main pipeline are obliquely arranged at 30-45 degrees.
The branch pipelines and the main pipeline are obliquely arranged at 40 degrees.
A first liquid supply pump is arranged between the sodium hydroxide storage tank and the mixer, and a second liquid supply pump is arranged between the water storage tank and the mixer.
A mixed liquid storage tank is arranged between the detector and the hydrochloric acid synthesis furnace, and a third liquid supply pump is arranged between the mixed liquid storage tank and the hydrochloric acid synthesis furnace.
The beneficial effects of the utility model are as follows:
1. according to the utility model, the PH value of the mixed solution can be automatically adjusted by arranging the adjusting valves associated with the detectors on the sodium hydroxide storage tank and the water storage tank respectively, so that the PH value of the mixed solution is always stable within the range of 8+/-0.2, the problem of equipment corrosion caused by overhigh or overlow PH value of the mixed solution is avoided, and manual operation is not needed.
2. The utility model is based on karman vortex street phenomenon, so that vortex street appears at the position of the branch pipeline in the process of advancing pure water, the vortex street can take away slowly flowing sodium hydroxide solution through the discharge hole in batches, the time required by uniform mixing of the sodium hydroxide solution and the pure water is shortened, and the stability of the PH value is facilitated.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of a mixer;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
in the drawing, 1, a hydrochloric acid synthesis furnace, 2, a sodium hydroxide storage tank, 3, a water storage tank, 4, a mixer, 5, a first regulating valve, 6, a second regulating valve, 7, a third regulating valve, 8, a detector, 9, a main pipeline, 10, branch pipelines, 11, a discharge hole, 12, a first liquid supply pump, 13, a second liquid supply pump, 14, a mixed liquid storage tank, 15 and a third liquid supply pump.
Detailed Description
The utility model is further described with reference to the accompanying drawings and specific examples:
the utility model provides a sodium hydroxide solution dilution control system for hydrochloric acid synthetic furnace 1, includes hydrochloric acid synthetic furnace 1, sodium hydroxide storage tank 2 and water storage tank 3 are connected with blender 4 respectively, blender 4 is connected with hydrochloric acid synthetic furnace 1, be provided with first governing valve 5 between sodium hydroxide storage tank 2 and the blender 4, be provided with second governing valve 6 between water storage tank 3 and the blender 4, be provided with third governing valve 7 and detector 8 between blender 4 and the hydrochloric acid synthetic furnace 1, the opening and shutting of detector 8 control first governing valve 5, second governing valve 6 and third governing valve 7.
In a specific embodiment, as shown in fig. 1-3, a sodium hydroxide storage tank 2 is filled with a sodium hydroxide solution with the mass fraction of 32%, a water storage tank 3 is filled with pure water, and a detector 8 is an MS-SH-500 type online liquid alkali concentration detector.
When the device works, the first regulating valve 5 and the second regulating valve 6 are opened, the third regulating valve 7 is closed, sodium hydroxide solution and pure water flow into the mixer 4 together, the mixed solution passes through the detector 8 for concentration detection, and when the PH value of the mixed solution is 8+/-0.2, the mixed solution flows into the hydrochloric acid synthesis furnace 1; when the PH value of the mixed solution is more than 8.2, the first regulating valve 5 is closed, the second regulating valve 6 is opened, pure water continuously flows into the mixer 4 to dilute the mixed solution to a PH value of 8+/-0.2, and the third regulating valve 7 is opened, so that the mixed solution flows into the hydrochloric acid synthesis furnace 1; when the pH value of the mixed solution is less than 7.8, the first regulating valve 5 is opened, the second regulating valve 6 is closed, the sodium hydroxide solution continuously flows into the mixer 4 to raise the pH value of the mixed solution to 8+/-0.2, and the third regulating valve 7 is opened, so that the mixed solution flows into the hydrochloric acid synthesis furnace 1.
As shown in fig. 2-3, the mixer 4 includes a main pipe 9 and a branch pipe 10, the sodium hydroxide storage tank 2 is connected with the branch pipe 10, the water storage tank 3 is connected with the main pipe 9, the branch pipe 10 passes through a side wall of one side of the main pipe 9 and is fixed on a side wall of the other side of the main pipe 9, a discharge hole 11 is formed in a side wall of the branch pipe 10 located in the main pipe 9, the discharge hole 11 is located on one side of the branch pipe 10, which is opposite to a feed inlet of the main pipe 9, and since the sodium hydroxide solution and the pure water collide when flowing into the mixer 4, a certain effect is generated on mixing of the sodium hydroxide solution and the pure water, and a certain time is required for uniform mixing, the utility model enables the branch pipe 10 to be inserted into the main pipe 9 from the side wall of the main pipe 9, so that the pure water advances around the branch pipe 10, at this time, vortex street occurs at the position of the branch pipe 10, the vortex street slowly flows out of the sodium hydroxide solution through the discharge hole 11 in batches, the time required for uniform mixing of the sodium hydroxide solution and the pure water is shortened, and the mixer 4 is simple in structure, and can be manufactured by an enterprise, and the production cost is not required to be lowered.
As shown in FIG. 2, the branch pipeline 10 and the main pipeline 9 are obliquely arranged at an angle of 30-45 degrees, and when the branch pipeline 10 and the main pipeline 9 form an inclined angle of 30-45 degrees, the formed vortex street is more suitable for mixing the sodium hydroxide solution and the pure water, and the required mixing time is shorter.
As shown in fig. 2, the branch pipe 10 is inclined at 40 ° with respect to the main pipe 9, and when the branch pipe 10 forms an inclined angle of 40 ° with respect to the main pipe 9, the vortex street formed is most suitable for mixing sodium hydroxide solution and pure water, and the mixing time is minimized.
As shown in fig. 1, a first liquid supply pump 12 is arranged between the sodium hydroxide storage tank 2 and the mixer 4, a second liquid supply pump 13 is arranged between the water storage tank 3 and the mixer 4, and the conditions that the flow rate is fast and slow after the first liquid supply pump 12 and the second liquid supply pump 13 are avoided, so that the flow rates of pure water and sodium hydroxide solution are kept constant all the time, the subsequent mixing of the sodium hydroxide solution and the pure water is facilitated, and the PH value of the mixed solution is in a stable state.
As shown in fig. 1, a mixed solution storage tank 14 is arranged between the detector 8 and the hydrochloric acid synthesis furnace 1, a third liquid supply pump 15 is arranged between the mixed solution storage tank 14 and the hydrochloric acid synthesis furnace 1, and in order to continuously introduce mixed solution into the hydrochloric acid synthesis furnace 1, the mixed solution storage tank 14 is additionally arranged, when the PH value of the mixed solution in the mixer 4 is unqualified, the PH value of the mixed solution needs to be regulated for a certain time, and at the moment, qualified mixed solution stored in the mixed solution storage tank 14 is introduced into the hydrochloric acid synthesis furnace 1; after the PH value of the mixed liquor in the mixer 4 is adjusted to be qualified, the mixed liquor flows into the mixed liquor storage tank 14 to supplement the allowance, so that the mixed liquor storage tank 14 can continuously provide qualified mixed liquor for the hydrochloric acid synthesis furnace 1.
Claims (6)
1. The utility model provides a sodium hydroxide solution dilution control system for hydrochloric acid synthetic furnace, includes hydrochloric acid synthetic furnace (1), sodium hydroxide storage tank (2) and water storage tank (3), its characterized in that, sodium hydroxide storage tank (2) and water storage tank (3) are connected with blender (4) respectively, blender (4) are connected with hydrochloric acid synthetic furnace (1), be provided with first governing valve (5) between sodium hydroxide storage tank (2) and blender (4), be provided with second governing valve (6) between water storage tank (3) and blender (4), be provided with third governing valve (7) and detector (8) between blender (4) and hydrochloric acid synthetic furnace (1), the opening and shutting of detector (8) control first governing valve (5), second governing valve (6) and third governing valve (7).
2. The sodium hydroxide solution dilution control system for a hydrochloric acid synthesis furnace according to claim 1, wherein the mixer (4) comprises a main pipe (9) and a branch pipe (10), the sodium hydroxide storage tank (2) is connected with the branch pipe (10), the water storage tank (3) is connected with the main pipe (9), the branch pipe (10) penetrates through one side wall of the main pipe (9) and is fixed on the other side wall of the main pipe (9), a discharge hole (11) is formed in the side wall of the branch pipe (10) located in the main pipe (9), and the discharge hole (11) is located on one side of the branch pipe (10) away from a feed inlet of the main pipe (9).
3. The sodium hydroxide solution dilution control system for a hydrochloric acid synthesizing furnace according to claim 2, wherein the branch pipe (10) is disposed at an angle of 30-45 ° to the main pipe (9).
4. A sodium hydroxide solution dilution control system for a hydrochloric acid synthesis furnace according to claim 3, characterized in that the branch pipe (10) is arranged at an angle of 40 ° to the main pipe (9).
5. The sodium hydroxide solution dilution control system for a hydrochloric acid synthesis furnace according to claim 1, wherein a first liquid supply pump (12) is arranged between the sodium hydroxide storage tank (2) and the mixer (4), and a second liquid supply pump (13) is arranged between the water storage tank (3) and the mixer (4).
6. The sodium hydroxide solution dilution control system for a hydrochloric acid synthesis furnace according to claim 1, wherein a mixed solution storage tank (14) is provided between the detector (8) and the hydrochloric acid synthesis furnace (1), and a third liquid supply pump (15) is provided between the mixed solution storage tank (14) and the hydrochloric acid synthesis furnace (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353312.5U CN219849360U (en) | 2023-03-01 | 2023-03-01 | Sodium hydroxide solution dilution control system for hydrochloric acid synthetic furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353312.5U CN219849360U (en) | 2023-03-01 | 2023-03-01 | Sodium hydroxide solution dilution control system for hydrochloric acid synthetic furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219849360U true CN219849360U (en) | 2023-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320353312.5U Active CN219849360U (en) | 2023-03-01 | 2023-03-01 | Sodium hydroxide solution dilution control system for hydrochloric acid synthetic furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219849360U (en) |
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2023
- 2023-03-01 CN CN202320353312.5U patent/CN219849360U/en active Active
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