Waste hydrochloric acid purification equipment
By designing purification equipment consisting of a buffer chamber, a volatilization chamber, and an absorption chamber, combined with a scaling mechanism, the scaling problem of the device was solved, achieving efficient purification and low-energy treatment of waste hydrochloric acid, and reducing hydrochloric acid concentration and environmental pollution.
Patent Information
- Application Number
- CN202520102913.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing equipment is prone to scaling after HCl is volatilized from waste hydrochloric acid, which affects the heat transfer effect.
A purification device comprising a buffer chamber, an evaporation chamber, and an absorption chamber was designed. Combined with a scale scraping mechanism, scale in the evaporation liquid phase space is scraped off by a scraper and a stirring rod. Hydrochloric acid is heated and volatilized using a heating element. Combined with water in the absorption chamber to dissolve HCl, a hydrochloric acid solution is formed.
It achieves effective purification of waste hydrochloric acid, reduces hydrochloric acid concentration, reduces environmental pollution, and prevents scale buildup from affecting heat transfer by a scale removal mechanism, thus reducing energy consumption.
Smart Images
Figure CN223879476U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to waste hydrochloric acid purification technical field, especially a kind of waste hydrochloric acid purification equipment. BACKGROUND
[0002] Hydrochloric acid is the aqueous solution of hydrogen chloride, the property of hydrochloric acid is colorless transparent liquid, has strong pungent smell, with higher corrosivity, concentrated hydrochloric acid has extremely strong volatility, so the container with concentrated hydrochloric acid is opened after hydrogen chloride gas volatilizes, combines with water vapor in air to produce hydrochloric acid droplet, makes the acid mist appear above bottle mouth, contact hydrochloric acid vapor or smoke can cause acute poisoning.
[0003] Utilize the volatile characteristics of hydrochloric acid, HCL in waste hydrochloric acid can be volatilized to realize the purification of waste hydrochloric acid, HCL is dissolved in water again, and hydrochloric acid solution can be obtained.However, after the existing device makes HCL volatilize from waste hydrochloric acid, the inside of the device has the phenomenon of fouling, which needs to be improved. UTILITY MODEL CONTENT
[0004] In view of the above situation, the utility model provides a kind of waste hydrochloric acid purification equipment, to solve the technical problem that the inside of the device is easy to scale after the existing device makes HCL volatilize from waste hydrochloric acid.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] The utility model provides a kind of waste hydrochloric acid purification equipment, comprising:
[0007] Buffer chamber has buffer inlet and buffer outlet;
[0008] Volatile chamber, it is distributed with volatile liquid phase space and volatile gas phase space from below to above in it;The volatile liquid phase space is connected with volatile inlet and volatile liquid outlet;The volatile gas phase space is connected with volatile exhaust port;
[0009] Absorption chamber, it is filled with water, the absorption chamber is provided with air inlet head, and the air inlet head is immersed below the water surface of absorption chamber;
[0010] Wherein, the buffer inlet, the buffer outlet and the volatile inlet are sequentially connected to form liquid path;The volatile exhaust port and the air inlet head are sequentially connected to form gas path;
[0011] The volatile liquid phase space is provided with heating part for heating its inside;
[0012] The volatile gas phase space is provided with scale removing mechanism, and the scale removing mechanism is used to remove the scale on the sidewall inside the volatile liquid phase space.
[0013] In some embodiments of the utility model, the scale scraping mechanism comprises a rotating shaft and a first scraper, one end of the rotating shaft is located in the volatile liquid phase space, the first scraper is vertically arranged and in sliding contact with the inner side wall of the volatile liquid phase space, and the first scraper is connected with the rotating shaft.
[0014] In some embodiments of the utility model, the scale scraping mechanism further comprises a second scraper, the second scraper is horizontally arranged and in sliding contact with the bottom wall inside the volatile liquid phase space, and the first scraper is connected with the rotating shaft through the second scraper.
[0015] In some embodiments of the utility model, the first scraper or the second scraper is connected with a stirring rod.
[0016] In some embodiments of the utility model, the highest point of the gas path is located above the water surface of the absorption chamber.
[0017] In some embodiments of the utility model, the upper part of the buffer chamber has a buffer gas phase space, and the buffer gas phase space is connected with the gas path.
[0018] In some embodiments of the utility model, a flow meter is further included, and the flow meter is used for monitoring the gas flow in the gas path.
[0019] In some embodiments of the utility model, a thermometer is further included, and the thermometer is used for monitoring the temperature in the volatile liquid phase space.
[0020] In some embodiments of the utility model, the absorption chamber, the buffer chamber and the volatile chamber are sequentially arranged from top to bottom.
[0021] In some embodiments of the utility model, the volatile gas phase space and the buffer chamber can conduct heat conduction.
[0022] The utility model embodiment has at least the following advantages or beneficial effects:
[0023] 1. The application realizes purification of waste hydrochloric acid, the concentration of waste hydrochloric acid after purification is greatly reduced, the pollution to the environment is small, and the waste hydrochloric acid can be discharged from the volatile liquid discharge port.
[0024] 2. The scale scraping mechanism is used for scraping off the scale on the inner side wall of the volatile liquid phase space, so that the heat transfer effect between the heating element and the volatile liquid phase space is not affected by too much scale.
[0025] Other features and advantages of the utility model will be described in the subsequent description, and some of them become obvious from the description or are understood by implementing the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.
[0027] Figure 1 Figure 1 is a structural schematic diagram of a waste hydrochloric acid purification device; the double-dot line in the figure indicates the liquid level.
[0028] Figure 1 is a structural schematic diagram of a waste hydrochloric acid purification device; the double-dot line in the figure indicates the liquid level.
[0029] 1- absorption chamber, 11- air inlet head,
[0030] 3- buffer chamber, 31- buffer liquid inlet, 32- buffer liquid outlet, 33- buffer exhaust pipe,
[0031] 4- volatilization chamber, 41- volatilization liquid phase space, 411- volatilization liquid inlet, 412- volatilization liquid outlet, 42- volatilization gas phase space, 421- volatilization exhaust port,
[0032] 5- heating element,
[0033] 61- rotating shaft, 62- first scraper, 63- second scraper, 64- stirring rod, 65- motor,
[0034] 7- flow meter, 8- temperature meter. DETAILED DESCRIPTION
[0035] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present application.
[0036] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0037] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0038] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0039] The embodiments of the present application will be described in detail below.
[0040] Embodiments
[0041] Referring to Figure 1 The present embodiment provides a waste hydrochloric acid purification equipment, which comprises an absorption chamber 1, a buffer chamber 3 and a volatilization chamber 4 distributed in turn from top to bottom.
[0042] The buffer chamber 3 has a buffer liquid inlet 31 and a buffer liquid outlet 32.
[0043] The volatilization chamber 4 has a volatilization liquid phase space 41 and a volatilization gas phase space 42 distributed from bottom to top; the volatilization liquid phase space 41 is connected with a volatilization liquid inlet 411 and a volatilization liquid outlet 412, the volatilization liquid inlet 411 is connected with the buffer liquid outlet 32, and the volatilization liquid outlet 412 is used for discharging waste water after recovery of hydrochloric acid; a heating element 5 for heating the inside of the volatilization liquid phase space 41 is arranged outside the volatilization liquid phase space 41, and the heating element 5 is wound on the outer wall of the volatilization chamber 4; the volatilization gas phase space 42 is connected with a volatilization gas outlet 421; the volatilization gas phase space 42 can conduct heat with the buffer chamber 3.
[0044] A scale removing mechanism is arranged in the volatilization gas phase space 42, and the scale removing mechanism is used for removing the scale on the inner side wall of the volatilization liquid phase space 41.
[0045] The absorption chamber 1 is filled with water, and the lower part of the absorption chamber 1 is provided with an air inlet head 11 which is immersed below the water surface of the absorption chamber 1. A plurality of air inlet heads 11 are uniformly distributed in the lower part of the absorption chamber 1.
[0046] The buffer liquid inlet 31, the buffer liquid outlet 32 and the volatile liquid inlet 411 are sequentially connected to form a liquid path, the waste water first enters the buffer chamber 3, and then enters the volatile liquid phase space 41 of the volatile chamber 4, after the hydrochloric acid in the waste water is heated and promoted to volatilize by the heating piece 5, the hydrochloric acid enters the absorption chamber 1 along the gas path formed by the volatile exhaust port 421 and the gas inlet head 11 in sequence, the HCL gas is dissolved in water, so that the hydrochloric acid solution is obtained, the purification of the waste hydrochloric acid is realized, the concentration of the hydrochloric acid after the waste hydrochloric acid is purified is greatly reduced, the pollution to the environment is small, and the waste hydrochloric acid can be discharged from the volatile liquid outlet 412. After being used for a period of time, the scaling on the side wall inside the volatile liquid phase space 41 can be scraped off by the scaling scraping mechanism, so as to prevent the scaling from affecting the heat transfer effect between the heating piece 5 and the volatile liquid phase space 41 due to too much scaling.
[0047] As can be seen from the above, the embodiment realizes the purification of the waste hydrochloric acid, the concentration of the hydrochloric acid after the waste hydrochloric acid is purified is greatly reduced, the pollution to the environment is small, and the waste hydrochloric acid can be discharged from the volatile liquid outlet 412. The absorption chamber 1, the buffer chamber 3 and the volatile chamber 4 are integrated from top to bottom in the embodiment, so that the occupation of the horizontal space is reduced. The scaling on the side wall inside the volatile liquid phase space 41 is scraped off by the scaling scraping mechanism, so as to prevent the scaling from affecting the heat transfer effect between the heating piece 5 and the volatile liquid phase space 41 due to too much scaling. In addition, after the hydrochloric acid in the waste water is heated and promoted to volatilize by the heating piece 5, the hydrochloric acid rises to contact the bottom of the buffer chamber 3 to exchange heat, so as to preheat the waste water in the buffer chamber 3, thereby reducing the overall energy consumption of the waste hydrochloric acid purification device.
[0048] The scaling scraping mechanism comprises a rotating shaft 61, a first scraper 62, a second scraper 63 and a stirring rod 64.
[0049] One end of the rotating shaft 61 is located in the volatile liquid phase space 41, and the rotating shaft 61 is driven by a motor 65.
[0050] The first scraper 62 is vertically arranged and in sliding contact with the side wall inside the volatile liquid phase space 41, and the first scraper 62 is connected with the rotating shaft 61 through the second scraper 63.
[0051] The second scraper 63 is transversely arranged and in sliding contact with the bottom wall inside the volatile liquid phase space 41, and the second scraper 63 is connected with the rotating shaft 61.
[0052] The stirring rod 64 is connected with the first scraper 62 or the second scraper 63.
[0053] Through the arrangement of the rotating shaft 61 and the first scraper 62, the scaling on the side wall inside the volatile liquid phase space 41 can be scraped off, so as to prevent the scaling from affecting the heat transfer effect between the heating piece 5 and the volatile liquid phase space 41 due to too much scaling. Through the arrangement of the second scraper 63, on the one hand, the connection between the first scraper 62 and the rotating shaft 61 is facilitated, and on the other hand, the scaling on the bottom wall inside the volatile liquid phase space 41 can be scraped off. Through the arrangement of the stirring rod 64, the volatilization of HCL can be accelerated by the stirring effect.
[0054] In the embodiment, the highest point of the gas path is above the water surface of the absorption chamber 1, so as to prevent the water in the absorption chamber 1 from flowing back into the buffer chamber 3.
[0055] The upper part of the buffer chamber 3 has a buffer gas phase space, which is connected with the gas path through the buffer exhaust pipe 33. When the upper part of the buffer chamber 3 has the buffer gas phase space (the waste water does not fill the buffer chamber 3), the hydrochloric acid in the waste water in the buffer chamber 3 also has a certain volatilization phenomenon. In the embodiment, the volatilized HCL gas in the buffer chamber 3 is also guided into the absorption chamber 1 for absorption.
[0056] The waste hydrochloric acid purification device further comprises a flow meter 7 and a thermometer 8. The flow meter 7 is used for monitoring the gas flow in the gas path, so as to reflect the amount of volatilized HCL gas. The thermometer 8 is used for monitoring the temperature in the volatilized liquid phase space 41, so as to reflect the working state of the heating element 5.
[0057] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A waste hydrochloric acid purification apparatus characterized by comprising: The device comprises: a buffer chamber having a buffer liquid inlet and a buffer liquid outlet; a volatilization chamber having a volatilization liquid phase space and a volatilization gas phase space distributed from bottom to top; the volatilization liquid phase space is connected with a volatilization liquid inlet and a volatilization liquid outlet; the volatilization gas phase space is connected with a volatilization gas outlet; an absorption chamber filled with water, and an air inlet head is arranged in the absorption chamber and immersed below the water surface of the absorption chamber; wherein the buffer liquid inlet, the buffer liquid outlet and the volatilization liquid inlet are sequentially connected to form a liquid path; the volatilization gas outlet and the air inlet head are sequentially connected to form an air path; a heating member is arranged outside the volatilization liquid phase space for heating the interior of the volatilization liquid phase space; a scale removal mechanism is arranged in the volatilization gas phase space, and the scale removal mechanism is used for removing scale on the side wall inside the volatilization liquid phase space.
2. The spent hydrochloric acid purification apparatus according to claim 1, characterized by The scale removal mechanism comprises a rotating shaft and a first scraper; one end of the rotating shaft is located in the volatilization liquid phase space; the first scraper is vertically arranged and in sliding contact with the side wall inside the volatilization liquid phase space, and the first scraper is connected with the rotating shaft.
3. The spent hydrochloric acid purification apparatus according to claim 2, characterized by The scale removal mechanism further comprises a second scraper; the second scraper is horizontally arranged and in sliding contact with the bottom wall inside the volatilization liquid phase space, and the first scraper is connected with the rotating shaft through the second scraper.
4. The spent hydrochloric acid purification apparatus according to claim 3, characterized by The first scraper or the second scraper is connected with a stirring rod.
5. The spent hydrochloric acid purification apparatus according to claim 1, characterized by The highest point of the air path is located above the water surface of the absorption chamber.
6. The spent hydrochloric acid purification apparatus according to claim 1, characterized by The upper part of the buffer chamber has a buffer gas phase space, and the buffer gas phase space is connected with the air path.
7. The spent hydrochloric acid purification apparatus according to claim 1, characterized by Further comprising a flow meter for monitoring the gas flow in the air path.
8. The spent hydrochloric acid purification apparatus according to claim 1, characterized by Further comprising a thermometer for monitoring the temperature in the volatilization liquid phase space.
9. The spent hydrochloric acid purification apparatus according to any one of claims 1 to 8, characterized by The absorption chamber, the buffer chamber and the volatilization chamber are sequentially distributed from top to bottom.
10. The spent hydrochloric acid purification apparatus according to claim 9, characterized by The volatilization gas phase space can conduct heat to the buffer chamber.