CN211445186U - Safe and environment-friendly treatment device for hydrofluoric acid for laboratory - Google Patents

Abstract

The utility model discloses a safe and environment-friendly hydrofluoric acid treatment device for laboratory, which comprises a plastic feeding device and a plastic reaction container; the plastic feeding device is a closed container with a feeding port and an interlayer, the feeding port is provided with a bottleneck plug and can be closed, the size of the feeding port is larger than that of a bottleneck of the hydrofluoric acid storage bottle to be treated, the bottle body can be supported, and ice water can be introduced into the interlayer to cool hydrofluoric acid. The plastic feeding device is communicated with the plastic reaction container through a polytetrafluoroethylene lining pipeline with a polytetrafluoroethylene lining valve; the plastic reaction container also comprises a polytetrafluoroethylene stirring device. The utility model is provided with the plastic feeding device special for pouring hydrofluoric acid, thereby being convenient for storing the waste hydrofluoric acid and ensuring the safety of the hydrofluoric acid in the storing and using processes; the special plastic reaction container is arranged, so that the possible damage of hydrofluoric acid to the device or a human body in the reaction process is effectively reduced, and the reaction is safe and controllable; this device is particularly useful for the laboratory and is used for handling discarded hydrofluoric acid.

Description

Safe and environment-friendly treatment device for hydrofluoric acid for laboratory

Technical Field

The utility model belongs to the useless field of handling of danger, concretely relates to safety ring protects processing apparatus with hydrofluoric acid in laboratory.

Background

Hydrofluoric acid is used in large quantities in laboratories of various colleges and universities, scientific research units and chemical enterprises, and is a hazardous waste because the hydrofluoric acid is strongly acidic and contains fluorine, which causes great damage to the environment. In practice, the material needs to be disposed of by qualified hazardous waste disposal enterprises, but this certainly increases the risk of the transportation process.

Therefore, for each laboratory, because the treatment capacity is not large, if the laboratory can neutralize and treat the hydrofluoric acid on site in time and then bury the generated solid wastes in a professional way, the danger of the hydrofluoric acid in the storage and transportation process can be reduced undoubtedly. At present, no safe and environment-friendly treatment device special for a hydrofluoric acid laboratory is available.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, an object of the utility model is to provide a safe environmental protection processing apparatus of hydrofluoric acid is used in laboratory effectively handles hazardous waste hydrofluoric acid, safety and environmental protection in the guarantee processing procedure.

The utility model discloses a following technical scheme:

the utility model utilizes the principle that hydrofluoric acid reacts with lime to generate precipitated calcium fluoride (equation is 2HF + Ca (OH))₂＝CaF₂+2H₂O), the invention discloses a safe and environment-friendly hydrofluoric acid treatment device for a laboratory, which comprises a plastic feeding device and a plastic reaction container; the plastic feeding device is a closed container provided with a feeding port and an interlayer, the feeding port is provided with a bottleneck plug which can be closed, the size of the feeding port is larger than that of a bottleneck of a hydrofluoric acid storage bottle to be treated and can support the body of the bottle, the interlayer is provided with a water injection port and a water discharge port, the plastic feeding device is communicated with the plastic reaction container through a teflon-lined pipeline, and the teflon-lined pipeline is provided with a teflon-lined valve; the plastic reaction container also comprises a polytetrafluoroethylene stirring device.

In view of strong acidity and corrosivity of hydrofluoric acid, the feeding device, the reaction container and the valve pipeline are made of acid-resistant corrosion-resistant materials, so that the running stability of the device is guaranteed, and the service life is prolonged.

Furthermore, the feeding port of the plastic feeding device is U-shaped, the lower end of the center of the U-shaped is provided with a small opening matched with the bottle mouth of the hydrofluoric acid storage bottle to be treated, the periphery of the U-shaped can wrap the bottle body of the hydrofluoric acid storage bottle to be treated to form support, and the upper part of the periphery of the U-shaped is provided with threads which can be screwed and sealed with the bottle mouth plug. Only need the manual work to place pending hydrofluoric acid storage bottle on the dog-house directly, let its self empty downwards, need not empty the in-process and artificially assist, avoid causing health hazard to the people empting the in-process. In the prior art, hydrofluoric acid is always poured into the reactor slowly by people, the flow control is unstable in the first time, and potential safety hazards are caused by pouring in the second time, so that the utility model only needs to buckle the hydrofluoric acid storage bottle upside down, stores the hydrofluoric acid in advance, controls the hydrofluoric acid to flow into the reaction container through the Teflon lining valve, is safer and more controllable,

further, the plastic reaction vessel is open-type or detachable closed-type. Preferably a detachable closed type, which prevents the hydrofluoric acid from volatilizing and escaping during the reaction process.

Further, the plastic reaction vessel is fixedly or detachably mounted. As an optional embodiment of the scheme, the plastic reaction vessel is provided with a detachable sealing panel, the sealing panel is provided with a first opening, a second opening and an openable window panel, the polytetrafluoroethylene stirring device extends into the reaction vessel through the first opening, and the second opening is used for introducing a polytetrafluoroethylene lining pipeline; the plastic feeding device is installed through the auxiliary supporting device, the auxiliary supporting device comprises a vertical supporting frame fixed on the plastic reaction container and a transverse supporting frame which is perpendicular to the vertical supporting frame and detachably connected with the vertical supporting frame, and the plastic feeding device is arranged on the transverse supporting frame. Furthermore, the plastic feeding device is provided with scale marks, so that the quantity of hydrofluoric acid which can be temporarily stored or processed by the plastic feeding device can be conveniently judged.

Furthermore, a bottle mouth plug is arranged at the water filling port and the water discharging port on the interlayer. Instead of flowing water for cooling, ice water is added into the interlayer to cool the plastic feeding device, so as to avoid volatilization of hydrofluoric acid.

Furthermore, the polytetrafluoroethylene stirring device is a lifting mechanism, and the stirring device can be arranged on the supporting rod through a sliding sleeve. The support rod can be fixed on a separate support base outside the reaction vessel, and can also be directly fixed on the reaction vessel.

Since the technical scheme is used, the utility model discloses following beneficial effect has: the utility model is provided with the plastic feeding device special for pouring hydrofluoric acid, thereby being convenient for storing the waste hydrofluoric acid and ensuring the safety of the hydrofluoric acid in the storing and using processes; a special plastic reaction container is arranged, and hydrofluoric acid enters the plastic reaction container through a fluorine-lined pipeline and a valve to react, so that the possible damage of the hydrofluoric acid to the device or a human body in the reaction process is effectively reduced, and the reaction is safe and controllable; this safe environmental protection processing apparatus is applicable to the laboratory and handles abandonment hydrofluoric acid very much, has effectively ensured operating personnel's safety, has reduced the pollution to the environment of hydrofluoric acid.

Drawings

In order to more clearly illustrate the technical solution of the mode of the invention, the drawings that are required to be used in the embodiment are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the invention, and are not to be considered as limiting the scope, and that for a person skilled in the art, other relevant drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic view of a safe and environment-friendly hydrofluoric acid treatment device for laboratory use according to the present invention;

in the figure, 1 is a feeding port, 2 is an interlayer, 3 is a closed container, 4 is a hydrofluoric acid storage bottle to be treated, 5 is a water injection port, 6 is a water discharge port, 7 is a polytetrafluoroethylene lining pipeline, 8 is a plastic reaction container, 9 is a polytetrafluoroethylene lining valve, 10 is a polytetrafluoroethylene stirring device, 11 is a support rod, 12 is a sealing panel, 13 is a first opening, 14 is a second opening, and 15 is a window panel.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

As shown in figure 1, the safe and environment-friendly hydrofluoric acid treatment device for the laboratory comprises a plastic feeding device and a plastic reaction container; the plastic feeding device is a closed container 3 provided with a feeding port 1 and provided with an interlayer 2, the shape of the closed container 3 can be cuboid or sphere, and the sphere is selected in the embodiment for facilitating feeding. A feeding port 1 of the plastic feeding device is U-shaped, a small opening is formed in the lower end of the center of the U-shaped center and is matched with a bottle opening of a hydrofluoric acid storage bottle 4 to be treated, the periphery of the U-shaped center can wrap a bottle body of the hydrofluoric acid storage bottle 4 to be treated to form support, and threads are arranged on the upper portion of the periphery of the U-shaped center and can be screwed and sealed with a bottle opening plug. The closed container 3 is provided with scale marks, so that the amount of hydrofluoric acid which can be temporarily stored or processed by the feeding device can be conveniently judged. The interlayer 2 is provided with a water injection port 5 and a water discharge port 6, the plastic feeding device is arranged on a plastic reaction container 8 through a lining tetrafluoro pipeline 7, and a lining tetrafluoro valve 9 is arranged on the lining tetrafluoro pipeline 7; the plastic reaction container 8 further comprises a polytetrafluoroethylene stirring device 10, the polytetrafluoroethylene stirring device 10 is of a lifting structure and is mounted on a support rod 11 through a sliding sleeve, and the support rod 11 is fixed on the plastic reaction container 8. The plastic reaction container 8 is in a detachable closed type, the plastic reaction container 8 is provided with a detachable sealing panel 12, the sealing panel 12 is provided with a first opening 13 and a second opening 14, and the polytetrafluoroethylene stirring device 10 extends into the plastic reaction container 8 through the first opening 13; the sealing panel 12 is partially opened, and is hinged with a window panel 15, and the window panel 15 can be opened to be used as a window for subsequent feeding and detection. The plastic feeding device is installed through the auxiliary supporting device, the auxiliary supporting device comprises a vertical supporting frame fixed on the plastic reaction container 8 and a transverse supporting frame which is perpendicular to the vertical supporting frame and can be detachably connected with the vertical supporting frame, and the plastic feeding device is arranged on the transverse supporting frame.

The working flow of the safe and environment-friendly treatment device is as follows:

1. when the hydrofluoric acid storage bottle is used normally, the lining tetrafluoro valve 9 is closed, the hydrofluoric acid storage bottle to be treated is directly inversely buckled and placed on the feeding port manually aiming at waste hydrofluoric acid reagents, the hydrofluoric acid storage bottle is toppled downwards by the hydrofluoric acid storage bottle, the hydrofluoric acid is stored in the closed container 2, and after the hydrofluoric acid storage bottle is toppled, the bottle opening plug is screwed, the closed container and the outside are isolated, and the hydrofluoric acid is prevented from volatilizing into the air. The boiling point of the hydrofluoric acid is about 19.5 ℃, so that the hydrofluoric acid is very easy to boil and volatilize in summer, and therefore when the temperature is higher, ice water can be poured into the interlayer to reduce the temporary storage temperature of the hydrofluoric acid in the closed container 2 and ensure the safety in use.

2. When the treatment is needed, a proper amount of lime is added into the plastic reaction container 8, tap water is added, the mixture is stirred to prepare a solution, the Teflon lining valve 9 is opened for a certain opening degree, and hydrofluoric acid is controlled to be slowly injected into the lime water with stirring. Continuously stirring for 3-5min after injecting a certain amount of hydrofluoric acid, detecting the pH value of the solution in the container by using a pH test paper or a pH meter, and continuously injecting the solution into the next batch when the solution is alkaline. If the pH of the solution in the container is found to be acidic during detection, lime solution is added from the window panel 15 to adjust the pH to be alkaline, and then hydrofluoric acid is injected until the hydrofluoric acid is completely treated. After the hydrofluoric acid treatment is finished, the pH value of the window panel 15 is detected by adopting pH test paper, and 30% sulfuric acid is added to adjust the pH value to be neutral.

3. And transferring the treated product calcium fluoride and the aqueous solution to a hazardous waste disposal curing workshop, adding cement, thiourea and other stable curing reagents, and curing and then conveying the cured product into a hazardous waste landfill for landfill.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a safe environmental protection processing apparatus of hydrofluoric acid is used in laboratory which characterized in that: comprises a plastic feeding device and a plastic reaction container; the plastic feeding device is a closed container provided with a feeding port and an interlayer, the feeding port is provided with a bottleneck plug which can be closed, the size of the feeding port is larger than that of a bottleneck of a hydrofluoric acid storage bottle to be treated and can support the body of the bottle, the interlayer is provided with a water injection port and a water discharge port, the plastic feeding device is communicated with the plastic reaction container through a teflon-lined pipeline, and the teflon-lined pipeline is provided with a teflon-lined valve; the plastic reaction container also comprises a polytetrafluoroethylene stirring device.

2. The safe and environmentally friendly processing device of claim 1, wherein: the feeding port of the plastic feeding device is U-shaped, the lower end of the center of the U-shaped is provided with a small opening matched with the bottle mouth of the hydrofluoric acid storage bottle to be treated, the periphery of the U-shaped can wrap the bottle body of the hydrofluoric acid storage bottle to be treated to form support, and the upper part of the periphery of the U-shaped is provided with threads which can be screwed and sealed with the bottle mouth plug.

3. The safe and environmentally friendly processing device of claim 1, wherein: the plastic reaction container is open or can be disassembled and closed.

4. The safe and environmentally friendly processing unit of claim 3, further comprising: the plastic reaction vessel is fixedly or detachably mounted.

5. The safe and environmentally friendly processing unit of claim 4, wherein: the plastic reaction container is provided with a detachable sealing panel, the sealing panel is provided with a first opening, a second opening and an openable window panel, the polytetrafluoroethylene stirring device extends into the reaction container through the first opening, and the second opening is used for introducing a polytetrafluoroethylene lining pipeline; the plastic feeding device is installed through the auxiliary supporting device, the auxiliary supporting device comprises a vertical supporting frame fixed on the plastic reaction container and a transverse supporting frame which is perpendicular to the vertical supporting frame and detachably connected with the vertical supporting frame, and the plastic feeding device is arranged on the transverse supporting frame.

6. The safe and environmentally friendly processing device of any one of claims 1-5, wherein: the plastic feeding device is provided with scale marks.

7. The safe and environmentally friendly processing unit of claim 6, further comprising: and a bottle mouth plug is arranged at the water filling port and the water discharging port on the interlayer.

8. The safe and environmentally friendly processing unit of claim 7, further comprising: the polytetrafluoroethylene stirring device is a lifting mechanism.

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