CN212356527U - Hydrochloric acid recovery system - Google Patents
Hydrochloric acid recovery system Download PDFInfo
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- CN212356527U CN212356527U CN202021420912.1U CN202021420912U CN212356527U CN 212356527 U CN212356527 U CN 212356527U CN 202021420912 U CN202021420912 U CN 202021420912U CN 212356527 U CN212356527 U CN 212356527U
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Abstract
The utility model belongs to the technical field of hydrochloric acid stores the use in the production, specifically a supporting hydrochloric acid recovery system who uses of hydrochloric acid storage tank. The system is provided with an acid pouring pipeline, one end of the acid pouring pipeline is connected with the liquid outlet pipeline of the hydrochloric acid storage tank, and the other end of the acid pouring pipeline is connected with an inlet of the acid pouring buffer tank. The invention only needs to locally reform the existing equipment, the reformed system obviously improves the hydrochloric acid conveying speed and the hydrochloric acid recovery rate, the application of the system can accelerate the hydrochloric acid conveying speed by about more than 25 percent, and the residual hydrochloric acid except the leaked hydrochloric acid is completely recovered.
Description
Technical Field
The utility model belongs to the technical field of hydrochloric acid stores the use in the production, specifically a supporting hydrochloric acid recovery system who uses of hydrochloric acid storage tank.
Background
In an ion exchange resin regeneration system, a hydrochloric acid storage tank is used, and due to equipment defects or the coming of service life, leakage risks generally exist, and a hydrochloric acid recovery scheme and a hydrochloric acid recovery system need to be established when the hydrochloric acid storage tank leaks. The existing solution is: when the storage tank leaks, the hydrochloric acid stored in the leakage tank is sequentially conveyed to the low liquid level storage tank through the outlet communicating pipe until the liquid level of the leakage tank is reduced to be level with the liquid levels of other lowest liquid level storage tanks, and the residual hydrochloric acid is discharged into a low metering tank and a wastewater neutralization pond. The existing solution has the following disadvantages: 1) the hydrochloric acid conveying speed is slow due to the limited height difference of the liquid level of the storage tank; when leakage accidents occur, the accident handling time is prolonged, and the recovery rate of hydrochloric acid is reduced; 2) when the liquid level of the acid leakage tank is equal to the liquid levels of other storage tanks with the lowest liquid level and the low metering tank is full, the residual hydrochloric acid can only be discharged into a waste water neutralization tank and cannot be fully recovered.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of the prior hydrochloric acid recovery system, the utility model provides a hydrochloric acid recovery system used with a hydrochloric acid storage tank.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the hydrochloric acid recovery system comprises a hydrochloric acid storage tank, an acid discharge buffer tank, an acid discharge pump, a liquid outlet pipeline of the hydrochloric acid storage tank and a liquid inlet pipeline of the hydrochloric acid storage tank, wherein the system is provided with an acid discharge pipeline, one end of the acid discharge pipeline is connected with the liquid outlet pipeline of the hydrochloric acid storage tank, and the other end of the acid discharge pipeline is connected with an inlet of the acid discharge buffer tank.
In the above technical scheme, further, an isolation valve is arranged at the joint of the acid pouring pipeline and the liquid outlet pipeline of the hydrochloric acid storage tank, and another isolation valve is arranged at the joint of the acid pouring pipeline and the acid unloading buffer tank.
In the above technical scheme, further, hydrochloric acid storage tank top is equipped with the breather valve.
In the above technical scheme, further, the pipe diameter of the acid pouring pipeline is the same as that of the liquid outlet pipeline of the hydrochloric acid storage tank.
In the above technical scheme, further, hydrochloric acid storage tank liquid inlet pipeline one end is connected hydrochloric acid storage tank entry, and the other end is connected and is unloaded the acid pump.
In the above technical scheme, further, the acid discharge pump is provided with two pumps, one pump is used online, and the other pump is standby.
In the above technical solution, further, the recovery system further includes a low-level batch meter.
The utility model has the advantages that: the invention only needs to locally reform the existing equipment, the reformed system obviously improves the hydrochloric acid conveying speed and the hydrochloric acid recovery rate, the application of the system can accelerate the hydrochloric acid conveying speed by about more than 25 percent, and the residual hydrochloric acid except the leaked hydrochloric acid is completely recovered.
Drawings
FIG. 1 is a schematic diagram of a hydrochloric acid recovery system of the present invention;
in the figure, ABCDEF is respectively 6 existing hydrochloric acid storage tanks, ABCDEF is respectively a breather valve on the hydrochloric acid storage tank, and numbers 1-8 are respectively an existing low-level metering tank, 9-acid unloading buffer tank, 10-isolation valves I and 11-isolation valve II.
Detailed Description
The invention is further illustrated but is not in any way limited by the following specific examples.
Example 1
The hydrochloric acid recovery system comprises a hydrochloric acid storage tank, an acid discharge buffer tank 9, an acid discharge pump, a hydrochloric acid storage tank liquid outlet pipeline and a hydrochloric acid storage tank liquid inlet pipeline, wherein the system is provided with an acid discharge pipeline, one end of the acid discharge pipeline is connected with the hydrochloric acid storage tank liquid outlet pipeline, and the other end of the acid discharge pipeline is connected with an inlet of the acid discharge buffer tank. An isolation valve I10 is arranged at the joint of the acid pouring pipeline and the liquid outlet pipeline of the hydrochloric acid storage tank, another isolation valve II 11 is arranged at the joint of the acid pouring pipeline and the acid unloading buffer tank, and a breather valve is arranged above the hydrochloric acid storage tank to ensure that the hydrochloric acid storage tank maintains positive pressure in the hydrochloric acid conveying process; the pipe diameter of the acid pouring pipeline is the same as that of the liquid outlet pipeline of the hydrochloric acid storage tank, so that the conveying flow is ensured; one end of a liquid inlet pipeline of the hydrochloric acid storage tank is connected with an inlet of the hydrochloric acid storage tank, the other end of the liquid inlet pipeline is connected with an acid discharge pump, and the acid discharge pump is provided with two pumps, one pump is used online and the other pump is used for standby; the recovery system also includes a low level batch tank.
As shown in fig. 1, taking 6 hydrochloric acid storage tanks as an example, one end of the acid pouring pipeline is connected to the liquid outlet main pipeline of the 6 hydrochloric acid storage tanks; an isolation valve I is arranged at the joint, the other end of the acid pouring pipeline is connected with an acid unloading buffer tank, and an isolation valve II is arranged at the joint. Taking the leakage of the hydrochloric acid storage tank A as an example, the hydrochloric acid in the hydrochloric acid storage tank A is conveyed to the hydrochloric acid storage tank F through the hydrochloric acid recovery system, and the specific operations are as follows: 1) opening a liquid outlet valve of the hydrochloric acid storage tank A and a breather valve a of the hydrochloric acid storage tank A, and closing liquid outlet valves of other hydrochloric acid storage tanks; 2) opening the isolation valve I and the isolation valve II, and replenishing the acid unloading buffer tank 9 to a high liquid level; 3) opening a liquid inlet valve of a hydrochloric acid storage tank F; 4) starting the acid unloading pump A or B, wherein the hydrochloric acid in the hydrochloric acid storage tank A firstly enters the acid unloading buffer tank 9 through an acid dumping pipeline, and then enters the hydrochloric acid storage tank F through the acid unloading pump A or B and a liquid inlet pipeline of the hydrochloric acid storage tank. When the liquid level of the hydrochloric acid storage tank A is 0, the hydrochloric acid in the hydrochloric acid storage tank A is completely recovered into the hydrochloric acid storage tank F. When stopping the return, the acid discharge pump A or B needs to be stopped, the isolation valve I and the isolation valve II are closed, then the liquid outlet valve and the breather valve a of the hydrochloric acid storage tank A are closed, the liquid inlet valve of the hydrochloric acid storage tank F is closed, and the hydrochloric acid recovery process is finished.
Example 2
The content of the comparative experiment with the existing system as a control is as follows:
the comparison system is: a hydrochloric acid storage tank A, a hydrochloric acid storage tank B, a hydrochloric acid storage tank C, a hydrochloric acid storage tank F and a hydrochloric acid storage tank liquid outlet pipeline.
The amount of the hydrochloric acid stored in the hydrochloric acid storage tank A is 30 tons, and the display liquid level is 1.2 m;
the amount of the hydrochloric acid stored in the hydrochloric acid storage tank B is 21 tons, and the display liquid level is 1.0 m;
the amount of the hydrochloric acid stored in the hydrochloric acid storage tank C is 10 tons, and the display liquid level is 0.6 m;
the hydrochloric acid storage tank F is an empty tank.
The control system operating steps and data are as follows:
(1) simultaneously opening liquid outlet valves of a hydrochloric acid storage tank A and a hydrochloric acid storage tank B, transferring part of hydrochloric acid in the storage tank A into the storage tank B through A, B liquid level static pressure, finally, the liquid level of the hydrochloric acid storage tank A, B is 1.13m, the storage quantity of the hydrochloric acid is 25.5 tons, and the time for recovering 4.5 tons of hydrochloric acid is about 20 minutes;
(2) closing a liquid outlet valve of a hydrochloric acid storage tank B, opening a liquid outlet valve of a hydrochloric acid storage tank C, transferring part of hydrochloric acid in the storage tank A into the storage tank C through A, C liquid level static pressure, finally, enabling the liquid level of a hydrochloric acid storage tank A, C to be 8.8m, enabling the storage quantity of the hydrochloric acid to be 17.75 tons, and recycling 7.75 tons of the hydrochloric acid for about 30 minutes;
(3) closing a liquid outlet valve of a hydrochloric acid storage tank C, opening a liquid outlet valve of a hydrochloric acid storage tank F, transferring part of hydrochloric acid in the storage tank A to the tank F through A, F liquid level static pressure, finally, enabling the liquid level of the hydrochloric acid storage tank A, F to be 5.5m, enabling the storage quantity of the hydrochloric acid to be 8.875 tons, and recycling 8.875 tons of the hydrochloric acid for about 35 minutes;
the hydrochloric acid recovery operation of the control system is completed, 21.125 tons of hydrochloric acid are recovered in total, the recovery rate is about 70 percent, and the time is 85 minutes.
By applying the hydrochloric acid recovery system of the invention, 30 tons of hydrochloric acid in the hydrochloric acid storage tank A is recovered into the hydrochloric acid storage tank F (F is an empty tank) according to the embodiment 1, finally, the liquid level of the hydrochloric acid storage tank A is 0, the liquid level of the hydrochloric acid storage tank F is 1.2m, all hydrochloric acid in the hydrochloric acid storage tank A is recovered into the hydrochloric acid storage tank F, the theoretical recovery rate is 100%, and the use time is about 60 minutes.
According to the hydrochloric acid recovery system, the hydrochloric acid recovery speed is improved by 29%.
It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (7)
1. A hydrochloric acid recovery system comprises a hydrochloric acid storage tank, an acid discharge buffer tank, an acid discharge pump, a liquid outlet pipeline of the hydrochloric acid storage tank and a liquid inlet pipeline of the hydrochloric acid storage tank, and is characterized in that,
the system is provided with an acid pouring pipeline, one end of the acid pouring pipeline is connected with a liquid outlet pipeline of the hydrochloric acid storage tank, and the other end of the acid pouring pipeline is connected with an inlet of the acid unloading buffer tank.
2. The hydrochloric acid recovery system of claim 1, wherein an isolation valve I is arranged at the joint of the acid pouring pipeline and the liquid outlet pipeline of the hydrochloric acid storage tank, and another isolation valve II is arranged at the joint of the acid pouring pipeline and the acid unloading buffer tank.
3. The hydrochloric acid recovery system according to claim 1, wherein a breather valve is provided above the hydrochloric acid storage tank.
4. The hydrochloric acid recovery system of claim 1, wherein the pipe diameter of the acid pouring pipeline is the same as that of the liquid outlet pipeline of the hydrochloric acid storage tank.
5. The hydrochloric acid recovery system of claim 1, wherein one end of the liquid inlet pipeline of the hydrochloric acid storage tank is connected with the inlet of the hydrochloric acid storage tank, and the other end of the liquid inlet pipeline of the hydrochloric acid storage tank is connected with the acid discharge pump.
6. The hydrochloric acid recovery system of claim 1, wherein there are two acid discharge pumps, one for on-line use and one for standby.
7. The hydrochloric acid recovery system of claim 1, further comprising a low level batch tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021420912.1U CN212356527U (en) | 2020-07-17 | 2020-07-17 | Hydrochloric acid recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021420912.1U CN212356527U (en) | 2020-07-17 | 2020-07-17 | Hydrochloric acid recovery system |
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| CN212356527U true CN212356527U (en) | 2021-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689470A (en) * | 2020-07-17 | 2020-09-22 | 恒力石化（大连）有限公司 | Hydrochloric acid recovery system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689470A (en) * | 2020-07-17 | 2020-09-22 | 恒力石化（大连）有限公司 | Hydrochloric acid recovery system |
| CN111689470B (en) * | 2020-07-17 | 2024-03-29 | 恒力石化（大连）有限公司 | Hydrochloric acid recovery system |
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