A hydrochloric acid purification device for industrial production

Abstract

The invention discloses a hydrochloric acid purification device for industrial production, which relates to the technical field of hydrochloric acid purification, and comprises an outer frame, which is used as a supporting frame for the whole device; a waste liquid bin is arranged inside the outer frame, and the waste liquid bin is used to store the industrial hydrochloric acid solution to be purified; a liquid taking mechanism is arranged above the waste liquid bin, and a rotating hollow tube is arranged inside the liquid taking mechanism, and the hollow tube drives an evaporation plate to pass through the hydrochloric acid solution in the waste liquid bin, and a layer of hydrochloric acid solution is adsorbed on the surface of the evaporation plate; then a drying plate heats and evaporates the hydrochloric acid solution attached to the evaporation plate; the beneficial effect of the invention is that the device does not adopt a spraying method, and has a greater tolerance for the particle size of impurities in the waste liquid, and secondly, a scraper is used to scrape off impurities on the outer surface of the evaporation plate, and the storage amount of waste liquid in the waste liquid bin is judged by the collected weight of impurities per unit time, and the height of the waste liquid is raised by an electric push rod to ensure that the evaporation plate can absorb a sufficient amount of waste liquid for subsequent evaporation each time it rotates.

Description

Technical Field

[0001] The invention relates to the technical field of hydrochloric acid purification, in particular to a hydrochloric acid purification device for industrial production. Background Art

[0002] There are many modern waste acid recovery equipments. Although the use methods of various equipments are different, the principles are mostly the same. They all use the characteristic of FeCl2 to quantitatively hydrolyze at high temperature in an atmosphere with sufficient water vapor and appropriate amount of oxygen. The pre-concentrated waste hydrochloric acid is roasted in a roaster to convert the iron in the waste hydrochloric acid in the form of FeCl2 into Fe2O3 and separate it.

[0003] However, in the process of using the traditional concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration, the recovery is carried out by spray roasting. However, after roasting, this method will produce fine iron powder shells which are discharged into the atmosphere, causing pollution.

[0004] When faced with waste liquid with high hydrochloric acid concentration or containing solid impurities, spray roasting purification method is more suitable. At the same time, this process can efficiently recover chlorine, hydrogen, etc., and can process solid substances to reduce the amount of waste after treatment. Summary of the invention

[0005] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a hydrochloric acid purification device for industrial production, which solves the problem that it is difficult to purify waste liquid with high hydrochloric acid concentration or containing solid impurities.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: A hydrochloric acid purification device for industrial production, comprising a steam bin, the interior of which is a cavity, and when in use, the steam bin contains gaseous hydrochloric acid;

[0009] A condensing mechanism, disposed on one side of the steam bin and connected to the steam bin, for condensing gaseous hydrochloric acid;

[0010] An outer frame connected to the lower end of the steam bin, the outer frame serving as a supporting frame for the entire device;

[0011] A waste liquid bin is provided inside the outer frame, and the waste liquid bin is used to store the industrial hydrochloric acid solution to be purified; a liquid taking mechanism is provided above the waste liquid bin, and a rotating head driven by a motor is provided inside the liquid taking mechanism, and the rotating head drives the evaporation plate to pass through the hydrochloric acid solution in the waste liquid bin, and a layer of hydrochloric acid solution is adsorbed on the surface of the evaporation plate; then the evaporation plate passes through the drying plate, and the drying plate heats and evaporates the hydrochloric acid solution attached to the evaporation plate;

[0012] The evaporation plate is in an arc-shaped plate shape, and a plurality of grooves are arranged on the inner side surface.

[0013] As a preferred embodiment of the hydrochloric acid purification device for industrial production described in the present invention, the outer frame comprises an outer frame, a support frame is provided on the bottom surface of the outer frame, a suction interface and a movable groove are provided on one side of the support frame, the movable groove is placed below the suction interface, a rotating opening is provided on the upper end of the outer frame, a scraper is provided on one side of the rotating opening, a first collecting port connected to a collecting box is provided on the other side of the scraper, and the collecting box is installed on the upper end of the outer frame.

[0014] As a preferred embodiment of the hydrochloric acid purification device for industrial production described in the present invention, a protrusion is provided inside the waste liquid bin, an electric push rod is provided on the bottom surface of the waste liquid bin, and the side surface of the waste liquid bin is connected to the delivery pipe through a joint.

[0015] As a preferred embodiment of the hydrochloric acid purification device for industrial production of the present invention, the liquid taking mechanism comprises the hollow tube, the two ends of the hollow tube are fixed to the inner wall of the outer frame, the two ends of the hollow tube are sleeved with rotating heads, one of the rotating heads is driven by a crawler belt to the driving head, and the driving head is driven by an external motor; the rotating head is not fixed to the hollow tube;

[0016] The sides of the two rotating heads are fixed to the two ends of the evaporation plate through a connecting plate, the rotating head is located on the inner side of the connecting plate, the drying plate is fixed on the hollow tube through a supporting plate, and the supporting plate is located between the connecting plates.

[0017] As a preferred embodiment of the hydrochloric acid purification device for industrial production of the present invention, the hollow tube includes a tube body, and a second collecting port is provided on the tube body.

[0018] As a preferred solution of the hydrochloric acid purification device for industrial production of the present invention, the space areas at both ends of the groove are larger than the space area in the middle.

[0019] As a preferred embodiment of the hydrochloric acid purification device for industrial production of the present invention, it further comprises a collecting mechanism and the second guiding mechanism, wherein the collecting mechanism is fixed to the hollow tube; the collecting mechanism is located inside the rotating area of ​​the evaporation plate;

[0020] The second guiding mechanism is fixed to the inner wall of the steam bin, and the second guiding mechanism is located above the scraper.

[0021] As a preferred solution of the hydrochloric acid purification device for industrial production of the present invention, wherein: the collecting mechanism includes a scraping member and a first guide member; the first guide member and the second guide mechanism have the same specifications;

[0022] The first guide member comprises a conveyor belt, fixed frames are arranged on both sides of the conveyor belt, a plurality of guide plates are arranged on the fixed frames, and the conveyor belt is driven by a driving motor at one end of the fixed frames.

[0023] As a preferred embodiment of the hydrochloric acid purification device for industrial production of the present invention, the scraping member includes a collecting plate, one end of the collecting plate is connected to the second collecting port, and the other end is provided with a plurality of scraping heads.

[0024] As a preferred embodiment of the hydrochloric acid purification device for industrial production of the present invention, the number of the scraping heads is consistent with the number of the grooves, and the width of the scraping heads is consistent with the width of the grooves; when the evaporation plate rotates, the inner wall of the groove will pass through the scraping heads.

[0025] The beneficial effects of the present invention are as follows: the present invention utilizes an evaporation plate to absorb a layer of waste liquid from the waste liquid on the inner and outer surfaces of the evaporation plate, and then drives the evaporation plate to pass through the drying plate through the hollow tube, and heats and evaporates the waste liquid on the surface of the evaporation plate through the drying plate; the difference from spray roasting is that spray roasting requires control of the spray particle size, and the device does not adopt a spraying method, so it has a greater tolerance for the particle size of impurities in the waste liquid, and secondly, a scraper is used to scrape off the impurities on the outer surface of the evaporation plate, and then a second guiding mechanism is used to transport the impurities to the inside of the collection box, and the storage amount of the waste liquid in the waste liquid bin is judged by the collected weight of the impurities per unit time, and then the height of the waste liquid in the waste liquid bin is raised by an electric push rod to ensure that the evaporation plate can absorb a sufficient amount of waste liquid for subsequent evaporation each time it rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0027] Figure 1 It is an overall schematic diagram of a hydrochloric acid purification device for industrial production;

[0028] Figure 2This is a schematic diagram of the internal structure of a hydrochloric acid purification device for industrial production;

[0029] Figure 3 This is a partial structural schematic diagram of a hydrochloric acid purification device for industrial production;

[0030] Figure 4 It is a plan view of the liquid taking mechanism of the hydrochloric acid purification device for industrial production;

[0031] Figure 5 This is a schematic diagram of the liquid extraction mechanism of the hydrochloric acid purification device for industrial production.

[0032] Figure 6 A detailed schematic diagram of a hydrochloric acid purification device for industrial production;

[0033] Figure 7 A schematic diagram of an evaporation plate of a hydrochloric acid purification device for industrial production;

[0034] Figure 8 This is a schematic diagram of the evaporation plate principle of a hydrochloric acid purification device for industrial production. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. Example

[0038] Reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, and provides a hydrochloric acid purification device for industrial production, which includes a steam bin 400, the interior of the steam bin 400 is a cavity, and when in use, the steam bin 400 contains gaseous hydrochloric acid;

[0039] The condensation mechanism 500 is disposed on one side of the steam bin 400 and communicated with the steam bin 400, and is used to condense the gaseous hydrochloric acid;

[0040] The outer frame 100 is connected to the lower end of the steam bin 400, and the outer frame 100 is used as a supporting frame for the entire device;

[0041] A waste liquid bin 200 is provided inside the outer frame 100, and the waste liquid bin 200 is used to store the industrial hydrochloric acid solution to be purified; a liquid taking mechanism 300 is provided above the waste liquid bin 200, and a rotating head 306 driven by a motor is provided inside the liquid taking mechanism 300, and the rotating head 306 drives the evaporation plate 303 to pass through the hydrochloric acid solution in the waste liquid bin 200, and a layer of hydrochloric acid solution is adsorbed on the surface of the evaporation plate 303; then the evaporation plate 303 passes through the drying plate 305, and the drying plate 305 heats and evaporates the hydrochloric acid solution attached to the evaporation plate 303;

[0042] It is in the shape of an arc plate, and a plurality of grooves 303a are provided on the inner side.

[0043] High-alumina ceramics are used, which have corrosion resistance and thermal conductivity. They also have good adsorption properties and can absorb more waste liquid. Similarly, the materials of the structures in contact with the waste liquid are all corrosion-resistant.

[0044] The outer frame 100 includes an outer frame 101, a support frame 103 is provided on the bottom surface of the outer frame 101, a suction interface 102 and a movable groove 108 are provided on one side of the support frame 103, and the movable groove 108 is placed below the suction interface 102. A rotating opening 104 is provided at the upper end of the outer frame 101, a scraper 105 is provided on one side of the rotating opening 104, and a first collecting port 107 connected to a collecting box 106 is provided on the other side of the scraper 105. The collecting box 106 is installed at the upper end of the outer frame 101.

[0045] Preferably, when the evaporation plate 303 rotates, the upper end of the scraper 105 can fit with the outer side surface of the evaporation plate 303 .

[0046] Preferably, since the height of the waste liquid level in the waste liquid bin 200 is determined by the weight of the impurities per unit time, a weight sensor is provided in the collection box 106, and the weight of the impurities collected in the collection box 106 per unit time is monitored by a controller, and the unit time is thirty minutes.

[0047] Preferably, the suction interface 102 is used to connect a negative pressure suction device to absorb impurities inside the hollow tube 301. The impurities in the hollow tube 301 are caused by the evaporation of waste liquid on the inner surface of the groove 303a during the rotation of the evaporation plate 303, and the impurities are retained on the inner wall of the groove 303a. After the groove 303a passes through the scraper head 601b, the scraper head 601b scrapes off the impurities, and the impurities are accumulated on the collection plate 601a. ​​After the first guide member 602 acts, the impurities enter the hollow tube 301.

[0048] A protrusion 201 is provided inside the waste liquid bin 200 , an electric push rod 204 is provided on the bottom surface of the waste liquid bin 200 , and the side surface of the waste liquid bin 200 is connected to the delivery pipe 202 via a joint 203 .

[0049] Preferably, the protrusion 201 forms an arc-shaped groove in the waste liquid bin 200, and the groove is adapted to the rotation trajectory of the evaporation plate 303. When the waste liquid bin 200 moves upward under the drive of the electric push rod 204, after the electric push rod 204 is extended to the maximum height, that is, the waste liquid bin 200 is lifted to the highest point, at this time, the movement trajectory of the evaporation plate 303 is in contact with the inner wall of the protrusion 201.

[0050] The liquid taking mechanism 300 includes a hollow tube 301, both ends of the hollow tube 301 are fixed to the inner wall of the outer frame 101, and both ends of the hollow tube 301 are sleeved with rotating heads 306, one of the rotating heads 306 and the driving head 308 is driven by a crawler 307, and the driving head 308 is driven by an external motor; the rotating head 306 and the hollow tube 301 are not fixed;

[0051] The sides of the two rotating heads 306 are fixed to the two ends of the evaporation plate 303 through the connecting plate 302 , and the rotating heads 306 are located on the inner side of the connecting plate 302 . The drying plate 305 is fixed on the hollow tube 301 through the supporting plate 304 , and the supporting plate 304 is located between the connecting plates 302 .

[0052] The hollow tube 301 includes a tube body 301 a , and a second collecting port 301 b is provided on the tube body 301 a .

[0053] The empty areas at both ends of the groove 303a are larger than the space area in the middle.

[0054] Preferably, the evaporation plate 303 also plays a role in stirring the waste liquid during the rotation process, so as to prevent the precipitation of impurities in the waste liquid and affect the judgment of the collection box 106.

[0055] like Figure 8 As shown, when the waste liquid inside the connecting plate 302 evaporates, since the space in the middle area of ​​the groove 303a is smaller than the two ends, during the gas generation process, the pressure in the middle of the groove 303a is greater than the pressure on both sides, so the gas can be smoothly released from the two ends of the groove 303a.

[0056] It also includes a collecting mechanism 600 and a second guiding mechanism 700, wherein the collecting mechanism 600 is fixed to the hollow tube 301; the collecting mechanism 600 is located inside the rotating area of ​​the evaporation plate 303;

[0057] The second guiding mechanism 700 is fixed to the inner wall of the steam bin 400 , and the second guiding mechanism 700 is located above the scraper 105 .

[0058] The collecting mechanism 600 includes a scraping member 601 and a first guide member 602; the first guide member 602 has the same specifications as the second guide mechanism 700;

[0059] The first guide member 602 includes a conveyor belt 602a. A fixing frame 602c is provided on both sides of the conveyor belt 602a. A plurality of guide plates 602b are provided on the fixing frame 602c. The conveyor belt 602a is driven by a driving motor 602d at one end of the fixing frame 602c.

[0060] The scraping member 601 includes a collecting plate 601a, one end of which is connected to the second collecting port 301b, and the other end of which is provided with a plurality of scraping heads 601b.

[0061] The number of the scraping heads 601b is the same as that of the grooves 303a, and the width of the scraping heads 601b is the same as that of the grooves 303a; when the evaporation plate 303 rotates, the inner wall of the groove 303a will pass through the scraping heads 601b.

[0062] Preferably, the collecting mechanism 600 is placed between the connecting plates 302 , and the collecting mechanism 600 does not interfere with the rotation of the connecting plates 302 .

[0063] When in use, the waste liquid bin 200 is first kept at the lowest position, and then a certain amount of waste liquid is transported into the waste liquid bin 200. Then, the reduction motor is started, and the evaporation plate 303 starts to rotate. The evaporation plate 303 passes through the waste liquid, and then evaporates under the action of the drying plate 305. At the same time, impurities in the waste liquid are retained on the surface of the evaporation plate 303. Then, the scraper 105 and the scraping head 601b will scrape the impurities on the surface of the evaporation plate 303, and finally the impurities are collected by the first guide 602 and the second guide mechanism 700.

[0064] When the liquid level of the waste liquid in the waste liquid bin 200 decreases, if the amount collected by the collection box 106 per unit time is too small, the electric push rod 204 will raise the height of the waste liquid bin 200, and the evaporation plate 303 will contact with more waste liquid again. The amount of waste liquid purified by the evaporation plate 303 is in a stable state during the whole process.

[0065] In summary, the evaporation plate 303 is used to absorb a layer of waste liquid from the waste liquid on the inner and outer surfaces of the evaporation plate 303, and then the evaporation plate 303 is driven through the hollow tube 301 to pass through the drying plate 305, and the waste liquid on the surface of the evaporation plate 303 is heated and evaporated by the drying plate 305; the difference from spray roasting is that spray roasting requires control of the spray particle size, and the device does not use a spraying method, so it has a greater tolerance for the particle size of impurities in the waste liquid. Secondly, the scraper 105 is used to scrape the impurities on the outer surface of the evaporation plate 303, and then the second guiding mechanism 700 is used to transport the impurities to the inside of the collection box 106, and the storage amount of waste liquid in the waste liquid bin 200 is judged by the collected weight of the impurities per unit time, and then the height of the waste liquid in the waste liquid bin 200 is raised by the electric push rod 204 to ensure that the evaporation plate 303 can absorb a sufficient amount of waste liquid for subsequent evaporation each time it rotates.

[0066] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0067] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0068] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A hydrochloric acid purification device for industrial production, comprising a steam bin (400), the interior of the steam bin (400) being a hollow cavity, and when in use, the steam bin (400) contains gaseous hydrochloric acid; A condensation mechanism (500) is disposed on one side of the steam bin (400) and is in communication with the steam bin (400) and is used to condense gaseous hydrochloric acid; Features: It comprises an outer frame (100) connected to the lower end of the steam bin (400), and the outer frame (100) is used as a supporting frame for the entire device; A waste liquid bin (200) is provided inside the outer frame (100), and the waste liquid bin (200) is used to store industrial hydrochloric acid solution to be purified; a liquid taking mechanism (300) is provided above the waste liquid bin (200), and a rotating head (306) driven by a motor is provided inside the liquid taking mechanism (300), and the rotating head (306) drives the evaporation plate (303) to pass through the hydrochloric acid solution in the waste liquid bin (200), and a layer of hydrochloric acid solution is adsorbed on the surface of the evaporation plate (303); then, the evaporation plate (303) passes through the drying plate (305), and the drying plate (305) heats and evaporates the hydrochloric acid solution attached to the evaporation plate (303); The evaporation plate (303) is in the shape of an arc plate, and a plurality of grooves (303a) are provided on the inner side surface; The liquid taking mechanism (300) comprises a hollow tube (301), the two ends of the hollow tube (301) are fixed to the inner wall of the outer frame (101), the two ends of the hollow tube (301) are sleeved with the rotating heads (306), one of the rotating heads (306) and the driving head (308) is driven by a crawler (307), and the driving head (308) is driven by an external motor; the rotating head (306) and the hollow tube (301) are not fixed; The side surfaces of the two rotating heads (306) are fixed to the two ends of the evaporation plate (303) via a connecting plate (302), the rotating head (306) is located on the inner side of the connecting plate (302), the drying plate (305) is fixed on the hollow tube (301) via a supporting plate (304), and the supporting plate (304) is located between the connecting plates (302); The hollow tube (301) comprises a tube body (301a), and the tube body (301a) is provided with a second collecting port (301b); It also includes a collecting mechanism (600) and a second guiding mechanism (700), wherein the collecting mechanism (600) is fixed to the hollow tube (301); the collecting mechanism (600) is located inside the rotating area of ​​the evaporation plate (303); The outer frame (100) comprises an outer frame (101), a rotating opening (104) is provided at the upper end of the outer frame (101), and a scraper (105) is provided on one side of the rotating opening (104); The second guiding mechanism (700) is fixed to the inner wall of the steam bin (400), and the second guiding mechanism (700) is located above the scraper (105); The collecting mechanism (600) comprises a scraping member (601) and a first guiding member (602); the first guiding member (602) has the same specifications as the second guiding mechanism (700); The first guide member (602) comprises a conveyor belt (602a), fixed frames (602c) are provided on both sides of the conveyor belt (602a), a plurality of guide plates (602b) are provided on the fixed frame (602c), and the conveyor belt (602a) is driven by a driving motor (602d) at one end of the fixed frame (602c); The scraping member (601) comprises a collecting plate (601a), one end of the collecting plate (601a) is connected to the second collecting port (301b), and the other end is provided with a plurality of scraping heads (601b).

2. The industrial hydrochloric acid purification device according to claim 1, characterized in that: A support frame (103) is provided on the bottom surface of the outer frame (101); a suction interface (102) and a movable groove (108) are provided on one side of the support frame (103); the movable groove (108) is located below the suction interface (102); a first collection port (107) connected to a collection box (106) is provided on the other side of the scraper (105); and the collection box (106) is mounted on the upper end of the outer frame (101).

3. The industrial hydrochloric acid purification device according to claim 1, characterized in that: A protrusion (201) is provided inside the waste liquid bin (200), an electric push rod (204) is provided on the bottom surface of the waste liquid bin (200), and a side surface of the waste liquid bin (200) is connected to a delivery pipe (202) via a joint (203).

4. The industrial hydrochloric acid purification device according to claim 1, characterized in that: The spatial areas at both ends of the groove (303a) are larger than the spatial area in the middle.

5. The industrial hydrochloric acid purification device according to claim 1, characterized in that: The number of the scraping heads (601b) is the same as that of the grooves (303a), and the width of the scraping heads (601b) is the same as that of the grooves (303a); when the evaporation plate (303) rotates, the inner wall of the groove (303a) passes through the scraping heads (601b).

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