CN215939030U - Be used for hydrochloric acid to retrieve energy-conserving device - Google Patents
Be used for hydrochloric acid to retrieve energy-conserving device Download PDFInfo
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- CN215939030U CN215939030U CN202122626347.5U CN202122626347U CN215939030U CN 215939030 U CN215939030 U CN 215939030U CN 202122626347 U CN202122626347 U CN 202122626347U CN 215939030 U CN215939030 U CN 215939030U
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Abstract
The utility model discloses a device for recovering hydrochloric acid and saving energy, and mainly relates to the field of hot-rolled coil production lines. Comprises an acid storage tank body, an acid-resistant pump body and an electromagnetic valve; the acid storage tank body is provided with a liquid inlet which is connected with an electromagnetic valve, and the electromagnetic valve is respectively connected with the acid-resistant pump body and the acid discharge pipeline; and the water outlet of the acid-proof pump body is connected with the hydrochloric acid tank body. The utility model has the beneficial effects that: the hydrochloric acid tank is mainly used in a hot-rolled coil pickling production line, hydrochloric acid liquid discharged when a hydrochloric acid tank body and a filtering device are maintained is recycled and stored, and corresponding generated water and unreacted hydrochloric acid mixed liquid are purified to improve the concentration of the hydrochloric acid solution, so that the aim of recycling is achieved, the phenomenon that acid liquid is discharged to a sewage pit to cause resources is avoided, a large amount of neutralizing alkali liquor is reduced to be put into the sewage pit, the cost of a factory is greatly saved, and the call of energy conservation and emission reduction is responded.
Description
Technical Field
The utility model relates to the field of hot-rolled coil production lines, in particular to a device for recovering hydrochloric acid and saving energy.
Background
Hydrochloric acid (with the concentration of 10% -20%) is needed to be used for cleaning iron oxide on the surface of a raw material (hot-rolled coil) after being heated in a hot-rolled coil production line, the production line in the traditional mode comprises a hydrochloric acid tank, a filter, a heater, an acid discharge pipeline and a sewage pit, and the filter needs to be cleaned after being emptied in the production and maintenance process; the hydrochloric acid in the acid tank needs to be emptied every month for cleaning; hydrochloric acid in the pipeline needs to be emptied when the acid pump is maintained or the valve is replaced; hydrochloric acid in vessels and pipelines which need to be emptied is prevented from being blocked by the graphite heater when the machine is stopped every time; the generated water and the unreacted hydrochloric acid after the rust removing reaction are emptied into a sewage pit, so that the hydrochloric acid is wasted; in the process, the hydrochloric acid is approximately emptied to 4-5 tons in the trench per month and flows to a sewage pit, and liquid alkali is adopted for neutralization treatment in order to protect the environment, so that the consumption of the liquid alkali is high, the resource waste is caused, and the energy consumption is high, so that a device for recovering the hydrochloric acid and saving energy is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an energy-saving device for hydrochloric acid recovery, which is mainly used in a hot-rolled pickling production line, and is used for recovering and storing hydrochloric acid liquid discharged when a hydrochloric acid tank body and a filtering device are maintained, and purifying a corresponding generated mixed solution of water and unreacted hydrochloric acid to improve the concentration of the hydrochloric acid solution, so that the aim of recycling is fulfilled, the phenomenon of resource caused by discharging acid liquid to a sewage pit is avoided, a large amount of neutralizing alkali liquor is reduced to be put into the sewage pit, the expense of a factory is greatly saved, and the call of energy conservation and emission reduction is responded.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a device for recovering hydrochloric acid and saving energy comprises an acid storage tank body, an acid-resistant pump body and an electromagnetic valve; the acid storage tank body is provided with a liquid inlet which is connected with an electromagnetic valve, and the electromagnetic valve is respectively connected with the acid-resistant pump body and the acid discharge pipeline; and the water outlet of the acid-proof pump body is connected with the hydrochloric acid tank body.
The interior of the acid liquid storage tank body is also provided with a heating device, a partition plate and a refrigerating device; the tank body is divided into two chambers, namely a heating chamber and a condensation chamber, by the partition plate; the heating device is arranged at the bottom of the heating cavity and is used for heating the reacted hydrochloric acid; the side wall of the condensation cavity is provided with a refrigerating device which condenses the water evaporated by heating, the bottom of the condensation cavity is provided with a water outlet, and a pipeline of the water outlet is connected with the sewage pit.
The top of the tank body is also provided with a liquid level meter which is a photoelectric liquid level sensor. The photoelectric water level sensor has wide application range, high reliability and strong stability, and is less influenced by liquid factors. Detecting various kinds of liquid purified water, sewage, diesel oil, engine oil and strong acid and strong alkali liquid. The photoelectric liquid level sensor has corresponding solutions for water vapor, external infrared interference and the like due to the fact that water vapor is heated and evaporated by the heating device.
The heating device is a heating resistance wire and a temperature control element, and the temperature control element controls the heating resistance wire to heat the heating cavity.
The refrigerating device is composed of a shell and a semiconductor refrigerating piece, wherein the semiconductor refrigerating piece is arranged inside the shell and is connected with a temperature control element. The semiconductor refrigeration piece is arranged inside the shell and is connected with a temperature control element. The semiconductor refrigerating sheet does not need any refrigerant, can continuously work, has no pollution source, does not have a rotating part, does not generate a rotation effect, does not have a sliding part, is a solid sheet, does not have vibration and noise during working, has long service life and is easy to install.
Compared with the prior art, the utility model has the beneficial effects that:
the hydrochloric acid tank is mainly used in a hot-rolled coil pickling production line, hydrochloric acid liquid discharged when a hydrochloric acid tank body and a filtering device are maintained is recycled and stored, and corresponding generated water and unreacted hydrochloric acid mixed liquid are purified to improve the concentration of the hydrochloric acid solution, so that the aim of recycling is achieved, the phenomenon that acid liquid is discharged to a sewage pit to cause resources is avoided, a large amount of neutralizing alkali liquor is reduced to be put into the sewage pit, the cost of a factory is greatly saved, and the call of energy conservation and emission reduction is responded.
Drawings
FIG. 1 is an overall view of the apparatus of the present invention.
Fig. 2 is an internal view of the apparatus of the present invention.
Reference numerals shown in the drawings:
1. an acid storage tank body; 2. an acid-resistant pump body; 3. an electromagnetic valve; 4. a liquid inlet; 5. an acid discharge pipeline; 6. a partition plate; 7. a heating cavity; 8. a condensation chamber; 9. a water outlet; 10. a photoelectric liquid level sensor; 11. heating resistance wires; 12. a housing; 13. semiconductor refrigeration piece.
Detailed Description
The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
General overview:
the utility model relates to a device for recovering and saving energy of hydrochloric acid, which is mainly used in a hot-rolled coil pickling production line, and is used for recovering and storing hydrochloric acid liquid discharged when a hydrochloric acid tank body and a filtering device are maintained, and purifying a corresponding generated mixed solution of water and unreacted hydrochloric acid to improve the concentration of the hydrochloric acid solution, so that the aim of recycling is fulfilled, the phenomenon of resource caused by discharging acid liquid to a sewage pit is avoided, a large amount of neutralizing alkali liquid is reduced to be put into the sewage pit, the cost of a factory is greatly saved, and the call for energy conservation and emission reduction is responded.
The above problems are solved by the following means:
as shown in the attached figure 1 of the specification, the main structure comprises an acid storage tank body 1, an acid-resistant pump body 2 and an electromagnetic valve 3;
the acid storage tank body 1 is provided with a liquid inlet 4, the liquid inlet 4 is connected with an electromagnetic valve 3, the electromagnetic valve 3 is a two-position three-way electromagnetic valve 3, and the electromagnetic valve 3 is suitable for acid liquid media; the electromagnetic valve 3 is respectively connected with the acid-resistant pump body 2 and the acid discharge pipeline 5; the water outlet of the acid-proof pump body 2 is connected with the hydrochloric acid tank body, the acid-proof pump body 2 is a diaphragm pump, and the diaphragm pump separates the infused liquid from the plunger and the pump cylinder by means of a film, so that the plunger and the pump cylinder are protected. The left side of the diaphragm, which is in contact with the liquid, is made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances; the right side of the diaphragm is filled with water or oil.
When the hydrochloric acid in the hydrochloric acid tank body needs to be discharged during equipment maintenance, the liquid inlet 4 is connected with the acid discharge pipeline 5 through the valve body of the electromagnetic valve 3, so that the hydrochloric acid flows into the acid storage tank body 1 to be stored; after the maintenance is finished, the liquid inlet 4 is connected with the pipeline of the acid-proof pump body 2 through the valve body of the electromagnetic valve 3, so that the hydrochloric acid in the acid storage tank body 1 is pumped into the hydrochloric acid tank body.
In order to further optimize and improve equipment and improve the overall utilization rate of the device, the diluted hydrochloric acid after reaction is heated and distilled, so that the hydrochloric acid after reaction can be recycled, and the device comprises the following devices:
as shown in the attached figure 2 of the specification, a heating device, a partition plate 6 and a refrigerating device are further arranged inside the acid storage tank body 1; the acid storage tank body 1 is divided into two chambers, namely a heating chamber 7 and a condensation chamber 8, by the partition plate 6; as shown in fig. 2 of the attached drawings, the partition 6 does not completely separate the acid storage tank 1, so that the water vapor volatilized from the heating chamber 7 flows to the condensing device of the condensing chamber 8 through the gap, thereby increasing the hydrochloric acid concentration in the heating chamber 7.
As shown in the attached fig. 2 of the specification, a heating device is arranged at the bottom of the heating chamber 7, and the concentration inside the acid storage tank 1 is firstly measured by a hydrochloric acid concentration meter before the hydrochloric acid inside the heating chamber 7 is heated. The heating device is used for heating the reacted hydrochloric acid, the heating device comprises a heating resistance wire 11 and a temperature control element, and the resistance heating is a method for electrically heating the material by utilizing the heat effect of current passing through a resistor body.
The temperature control element controls the current of the heating resistance wire 11 so as to control the heating temperature of the heating resistance wire 11 to the heating cavity 7, the controlled heating temperature is 100 ℃ of water boiling temperature, and the hydrochloric acid boiling point with the concentration below 20% is above 100 ℃, so that the diluted hydrochloric acid solution after reaction is heated, water in the hydrochloric acid solution is evaporated, the liquid level of the hydrochloric acid mixed solution in the heating cavity 7 is measured by a liquid level meter described below, and the evaporated water before and after heating is calculated, so that the concentration of the hydrochloric acid solution in the heating cavity 7 is obtained, and the hydrochloric acid is pumped into the hydrochloric acid tank body through the acid-proof pump body 2 described above. The vapor evaporated by heating enters the condensation chamber 8, so that the vapor is condensed, recycled and discharged to a sump. During heating, a small amount of unstable hydrochloric acid solution may volatilize to the condensation chamber 8, but only a small amount of alkali liquor is needed for neutralization.
As shown in the attached drawing fig. 2 of the specification, a refrigeration device is arranged on the side wall of the condensation chamber 8, the refrigeration device condenses and recovers the heated and evaporated water to the condensation chamber 8, a water outlet 9 is arranged at the bottom of the condensation chamber 8, a pipeline of the water outlet 9 is connected with a sewage pit, and the condensed water is discharged to the sewage pit. The refrigerating device is an acid-proof shell 12 and a semiconductor refrigerating sheet 13, wherein the semiconductor refrigerating sheet 13 is arranged inside the acid-proof shell 12 and is connected with a temperature control element. The semiconductor refrigerating sheet 13 does not need any refrigerant, can continuously work, has no pollution source, does not have a rotating part, does not generate a rotation effect, does not have a sliding part, is a solid sheet, does not have vibration and noise during working, has long service life and is easy to install. The semiconductor refrigerating plate 13 is a current transduction type plate, can realize high-precision temperature control through the control of input current, and can easily realize remote control, program control and computer control by means of temperature detection and control, thereby being convenient for forming an automatic control system. The current communicated with the semiconductor refrigerating sheet 13 is controlled through the temperature control element, so that the refrigerating temperature of the semiconductor refrigerating sheet 13 is controlled.
As shown in the attached drawing fig. 2 of the specification, a liquid level meter is further arranged at the top of the acid storage tank body 1, and the liquid level meter is a photoelectric liquid level sensor 10. The photoelectric water level sensor has wide application range, high reliability and strong stability, and is less influenced by liquid factors. Detecting various kinds of liquid purified water, sewage, diesel oil, engine oil and strong acid and strong alkali liquid. The photoelectric liquid level sensor 10 has a corresponding solution for water vapor, external infrared interference and the like due to the fact that water vapor is heated and evaporated by the heating device. The photoelectric water level sensor has stable performance, high reliability and high liquid level detection precision. The device is mainly used for detecting the capacity of the hydrochloric acid solution in the acid storage tank body 1 and discharging the hydrochloric acid solution in the acid storage tank body 1 in time. The volume of hydrochloric acid solution evaporation water can also be calculated through the measurement to the heating chamber 7 liquid level to calculate the concentration of hydrochloric acid solution in the heating chamber 7, thereby carry out the promotion of concentration with the hydrochloric acid solution of retrieving after the reaction.
The using method is detailed as follows:
after the pipeline connection of the equipment is finished, the liquid inlet 4 is connected with the acid discharge pipeline 5 through the valve body of the electromagnetic valve 3 during the maintenance of the equipment, so that the hydrochloric acid flows into the acid storage tank body 1 for storage; after the maintenance is finished, the liquid inlet 4 is connected with the pipeline of the acid-proof pump body 2 through the valve body of the electromagnetic valve 3, so that the hydrochloric acid in the acid storage tank body 1 is pumped into the hydrochloric acid tank body. The hydrochloric acid solution after the reaction is discharged when the equipment normally works, flows into the acid storage tank body 1 and is stored, the volume of the hydrochloric acid solution before heating in the heating cavity 7 is measured through the photoelectric water level sensor, the heating cavity 7 is heated through the heating device, when the volume of the hydrochloric acid solution after heating and evaporation in the heating cavity 7 reaches the corresponding concentration (10% -20%), the heating device stops heating, the water outlet of the condensation cavity 8 is opened, and sewage is discharged to a sewage pit.
In conclusion, the device can be used in a hot-rolled coil pickling production line, hydrochloric acid liquid discharged when a hydrochloric acid tank body and a filtering device are maintained is recycled and stored, and the corresponding generated water and unreacted hydrochloric acid mixed liquid are purified to improve the concentration of the hydrochloric acid solution, so that the purpose of recycling is achieved, the phenomenon that acid liquid is discharged to a sewage pit to cause resources is avoided, a large amount of neutralizing alkali liquor is added into the sewage pit, the cost of a factory is greatly saved, and the call of energy conservation and emission reduction is responded.
Claims (5)
1. The utility model provides a device for hydrochloric acid retrieves energy-conservation which characterized in that: comprises an acid storage tank body (1), an acid-resistant pump body (2) and an electromagnetic valve (3);
the acid storage tank body (1) is provided with a liquid inlet (4), the liquid inlet (4) is connected with an electromagnetic valve (3), and the electromagnetic valve (3) is respectively connected with the acid-resistant pump body (2) and the acid discharge pipeline (5); and a water outlet of the acid-proof pump body (2) is connected with the hydrochloric acid tank body.
2. The device for hydrochloric acid recovery energy conservation according to claim 1, characterized in that: the acid storage tank body (1) is internally provided with a heating device, a partition plate (6) and a refrigerating device;
the tank body is divided into two chambers, namely a heating chamber (7) and a condensation chamber (8), by the partition plate (6);
the bottom of the heating cavity (7) is provided with a heating device, and the heating device heats the reacted hydrochloric acid;
the side wall of the condensation cavity (8) is provided with a refrigerating device, the refrigerating device condenses the heated and evaporated water, the bottom of the condensation cavity (8) is provided with a water outlet (9), and a pipeline of the water outlet (9) is connected with the sewage pit.
3. The apparatus for hydrochloric acid recovery energy saving according to claim 1 or 2, characterized in that: the top of the tank body is also provided with a liquid level meter which is a photoelectric liquid level sensor (10).
4. The device for hydrochloric acid recovery energy conservation as claimed in claim 2, characterized in that: the heating device comprises a heating resistance wire (11) and a temperature control element, and the temperature control element controls the heating resistance wire (11) to heat the heating cavity (7).
5. The device for hydrochloric acid recovery energy conservation as claimed in claim 2, characterized in that: the refrigerating device is an acid-proof shell (12) and a semiconductor refrigerating sheet (13), wherein the semiconductor refrigerating sheet (13) is arranged inside the acid-proof shell (12) and is connected with a temperature control element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122626347.5U CN215939030U (en) | 2021-10-29 | 2021-10-29 | Be used for hydrochloric acid to retrieve energy-conserving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122626347.5U CN215939030U (en) | 2021-10-29 | 2021-10-29 | Be used for hydrochloric acid to retrieve energy-conserving device |
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| Publication Number | Publication Date |
|---|---|
| CN215939030U true CN215939030U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122626347.5U Active CN215939030U (en) | 2021-10-29 | 2021-10-29 | Be used for hydrochloric acid to retrieve energy-conserving device |
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| CN (1) | CN215939030U (en) |
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2021
- 2021-10-29 CN CN202122626347.5U patent/CN215939030U/en active Active
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