Device and method for producing electronic-grade hydrochloric acid

Abstract

The invention relates to the technical field of hydrochloric acid production, and discloses a production device and method of electronic grade hydrochloric acid. The inner rotating disc is placed in the cylindrical flowing cavity and can rotate, the bottom conical body is located under the inner rotating disc and can rotate along with the inner rotating disc, and the conical filter screen is installed on the circumferential side face of the inner rotating disc and the circumferential side face of the bottom conical body, can rotate along with the inner rotating disc and the bottom conical body and can filter flowing steam. According to the production device and method of the electronic-grade hydrochloric acid, hydrochloric acid gas generated by distillation can be filtered, and meanwhile filtered impurities are automatically separated from the conical filter screen in a centrifugal mode, so that the equipment can continuously work, and the production efficiency of the equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of hydrochloric acid production, and in particular to a production device and method for electronic-grade hydrochloric acid. Background Art

[0002] Hydrochloric acid, relative molecular mass 36.46, hydrochloric acid is a hydrogen chloride aqueous solution of different concentrations, transparent, colorless or yellow, with pungent odor and strong corrosiveness, easily soluble in water, ethanol, ether and oil, etc., concentrated hydrochloric acid is an aqueous solution containing 38% hydrogen chloride, relative density 1.19, melting point -112 ° C boiling point -83.7 ° C, 3.6% hydrochloric acid, pH value is 0.1, with the development of society, the application of electronic grade hydrochloric acid is more and more extensive, therefore, the demand for the production device of electronic grade hydrochloric acid is growing. At present, in the process of making electronic grade hydrochloric acid, the raw materials need to be removed by a filtering device after the first distillation to remove various solid substances carried in the steam, so as not to affect the purity of the subsequent hydrochloric acid, and the filter screen of the filtering device needs to be replaced after a period of use, but the existing filtering device is not convenient for replacing the filter screen, which reduces the efficiency of the work.

[0003] To this end, a Chinese patent with publication number "CN220899749U" announced "a production device for electronic grade hydrochloric acid", whose main structure includes a bottom plate, a first distiller is arranged on the bottom plate, the first distiller is connected to a hydrochloric acid filtering mechanism, the hydrochloric acid filtering mechanism includes a filter box connected to the first distiller, the filter box is connected to a second distiller, the second distiller is connected to a condenser, the lower side of the condenser is connected to a collecting tank, and a replacement mechanism for automatically replacing the filter is arranged on one side of the filter box. A new filter can be replaced before the old filter is completely replaced, and then the old filter can be removed. The filtering performance can always be maintained during the replacement process. Therefore, there is no need to stop production when automatically replacing the filter, which is more efficient. The filter is pushed for replacement by an electric telescopic rod, and the structure is simpler, and there is no need to consider the speed problem after separation.

[0004] However, the replacement mechanism for replacing the automatic filter needs to be disassembled and installed after a period of use, and the used filter needs to be cleaned after disassembly. At the same time, the operation of the equipment needs to be stopped during the cleaning process, which seriously reduces its production efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a production device and method for electronic-grade hydrochloric acid, which can filter the hydrochloric acid gas produced by distillation while automatically separating the filtered debris from the conical filter screen by centrifugation, thereby enabling the equipment to continue working, thereby ensuring the production efficiency of the equipment and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a production device of electronic grade hydrochloric acid, comprising support legs for supporting effect, and also comprising a steam flow guiding mechanism, wherein a vertical shell installed at the center of the support legs, a cylindrical flow cavity arranged inside the vertical shell and used for steam flow, and a conical flow partition structure arranged at the bottom area of ​​the vertical shell and used for isolating separated debris are arranged; and a rotating filtering mechanism, wherein an inner rotating disk placed inside the cylindrical flow cavity and capable of rotating, a bottom cone body located directly below the inner rotating disk and capable of rotating with the inner rotating disk, and a conical filter screen installed on the circumferential side surfaces of the inner rotating disk and the bottom cone body and capable of rotating with both, and capable of filtering the flowing steam are arranged inside.

[0007] Preferably, the steam flow guiding mechanism includes a vertical shell, a gas flow channel with a relatively smaller diameter is provided at the bottom of the vertical shell, a bottom connecting plate with an integral structure therewith is provided at the periphery of the bottom of the gas flow channel, a columnar flow cavity is provided inside the vertical shell, the bottom end of the columnar flow cavity is connected with the top of the gas flow channel, a No. 1 component mounting hole connected to the top of the columnar flow cavity is provided in the central area of ​​the vertical shell, a gas discharge hole connecting the external space and the top of the columnar flow cavity is provided at the top of the vertical shell on one side of the No. 1 component mounting hole, a conical flow partition structure with an integral structure therewith is provided at the bottom end of the columnar flow cavity, a debris discharge port connecting the bottom of the columnar flow cavity and the external space is provided at the bottom of the vertical shell, and a debris blocking cap is inserted into the discharge port of the debris discharge port.

[0008] Preferably, the longitudinal section of the conical flow partition structure is an "eight"-shaped structure, and the horizontal height of the top of the conical flow partition structure is higher than the horizontal height of the debris discharge port.

[0009] Preferably, the rotary filtering mechanism comprises an inner rotating disk installed inside the cylindrical flow cavity through a mechanical sealing structure, a hollow rotating shaft which is integrally formed with the inner rotating disk and passes through the mounting hole of component No. 1 is arranged at the center of the upper end surface of the inner rotating disk, the hollow rotating shaft is installed at the circumferential inner wall of the mounting hole of component No. 1 through a mechanical sealing structure at the periphery of the shaft body located inside the mounting hole of component No. 1, a pulley which is integrally formed with the inner rotating disk is arranged at the periphery of the shaft body located above the mounting hole of component No. 1, and an upwardly concave The component mounting groove of the structure, the interior of the hollow rotating shaft is provided with a No. 1 gas flow hole with a bottom end connected to the component mounting groove and a top end in an open state, a removable gas blocking cap is inserted into the top of the No. 1 gas flow hole, the interior of the component mounting groove is provided with a bottom cone located directly below it through a fan-shaped fixing frame, a conical filter screen is installed in an edge-sealed manner on the circumferential surface of the bottom cone body and the inner rotating disk, the inner circumferential surface of the conical filter screen constitutes a closed conical filter cavity, and the inner rotating disk is provided with a plurality of No. 2 gas flow holes connecting the top thereof and the conical filter cavity.

[0010] Preferably, the longitudinal section of the conical filter screen is an "eight"-shaped structure.

[0011] Preferably, the bottom level of the conical filter screen is higher than the top level of the conical flow partition structure.

[0012] Preferably, S1: docking the bottom connecting plate with the exhaust port of the distiller used for distilling hydrochloric acid, and docking the gas discharge hole with the air inlet of the condenser; S2: selecting a fixed driving motor, installing an external pulley on the rotor end of the driving motor, and then linking the pulley with the pulley at the rotor end through a belt; S3: turning on the distiller and the driving motor, the hydrochloric acid vapor formed by the distiller enters the gas flow channel, and enters the cylindrical flow cavity through the gap between the conical flow partition structure and the bottom conical body, and flows upward, the flowing hydrochloric acid vapor and impurities pass through the conical filter screen, at this time, the hydrochloric acid vapor will pass through the conical filter screen into the conical filter cavity, and flow to the condenser through the No. 2 gas flow hole and the gas discharge hole in turn, and The debris will be blocked on the outer circumference of the conical filter; S4: The rotating pulley will drive the conical filter to rotate, and the debris attached to the outer circumference of the conical filter will be thrown out to the surroundings under the action of centrifugal force, and fall on the periphery of the conical flow barrier structure under the action of gravity. When the conical filter needs to be cleaned in depth, turn off the drive motor and the distiller, and then select an air compressor, connect the air outlet of the air compressor with the No. 1 gas flow hole, start the air compressor, so that the high-pressure gas enters the conical filter cavity and flows to the conical filter, so that the debris blocked in the conical filter is unblocked, and deep cleaning is achieved; S5: Open the debris blocking cap regularly to remove the debris deposited in the cylindrical flow cavity to achieve the cleaning of the debris.

[0013] Compared with the prior art, the present invention provides a production device and method for electronic grade hydrochloric acid, which has the following beneficial effects: While filtering the hydrochloric acid gas generated by distillation, the filtered debris can be automatically separated from the conical filter screen by centrifugation, so that the equipment can continue to work, thereby ensuring the production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of the present invention; Figure 2 It is a three-dimensional cross-sectional view of the present invention at a first viewing angle; Figure 3 is a three-dimensional cross-sectional view of the present invention at a second viewing angle; Figure 4 is a three-dimensional cross-sectional view of the steam flow guiding mechanism of the present invention at a first viewing angle; Figure 5 is a three-dimensional cross-sectional view of the steam flow guiding mechanism of the present invention at a second viewing angle; Figure 6 A three-dimensional diagram of the rotary filtering mechanism of the present invention; Figure 7 It is a three-dimensional cross-sectional view of the rotary filtering mechanism of the present invention.

[0015] Wherein: 1. Support leg; 2. Steam flow guiding mechanism; 21. Vertical shell; 22. Gas flow channel; 23. Bottom connecting plate; 24. Columnar flow cavity; 25. No. 1 component mounting hole; 26. Conical baffle structure; 27. Debris discharge port; 28. Debris plugging cap; 29. ​​Gas discharge hole; 3. Rotating filter mechanism; 31. Inner rotating disk; 32. Hollow rotating shaft; 33. Pulley; 34. Gas plugging cap; 35. No. 1 gas flow hole; 36. Component mounting groove; 37. Fan-shaped fixing frame; 38. Bottom cone; 39. Conical filter screen; 310. Conical filter cavity; 311. No. 2 gas flow hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 , Figure 2 and Figure 3 A production device for electronic grade hydrochloric acid includes a supporting leg 1 for supporting, a bottom connecting plate 23 is connected to the exhaust port of a distiller for distilling hydrochloric acid, a gas discharge hole 29 is connected to the air inlet of a condenser, a fixed driving motor is selected, an external pulley is installed on the rotor end of the driving motor, and then the pulley 33 is linked to the pulley at the rotor end through a belt.

[0018] To achieve directional guidance of steam and debris, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , it is necessary to set up a steam flow guiding mechanism 2, inside which is provided a vertical shell 21 installed at the center of the supporting leg 1, a columnar flow cavity 24 arranged inside the vertical shell 21 and used for steam flow, and a conical flow partition structure 26 arranged at the bottom area of ​​the vertical shell 21 and used to isolate the separated debris. The distiller and the driving motor are turned on, and the hydrochloric acid vapor formed by the distiller enters the gas flow channel 22, and enters the columnar flow cavity 24 through the gap between the conical flow partition structure 26 and the bottom cone 38, and flows upward. The hydrochloric acid vapor will flow into the condenser through the No. 2 gas flow hole 311 and the gas discharge hole 29 in turn. The debris blocking cap 28 is opened regularly to take out the debris deposited in the columnar flow cavity 24, so as to achieve the cleaning of the debris.

[0019] For the specific structure of the steam flow guiding mechanism 2, please refer to Figure 4 and Figure 5 , comprising a vertical shell 21, a gas flow channel 22 with a relatively smaller diameter is arranged at the bottom of the vertical shell 21, a bottom connecting plate 23 with an integral structure is arranged at the bottom periphery of the gas flow channel 22, a columnar flow cavity 24 is arranged inside the vertical shell 21, the bottom end of the columnar flow cavity 24 is connected with the top of the gas flow channel 22, a No. 1 component mounting hole 25 connected with the top of the columnar flow cavity 24 is arranged in the central area of ​​the vertical shell 21, and a No. 1 component mounting hole 25 connected with the top of the columnar flow cavity 24 is arranged at the top of the vertical shell 21 on one side of the No. 1 component mounting hole 25, which is connected with the outside space and A gas discharge hole 29 is provided at the top of the columnar flow cavity 24. The vertical shell 21 is provided with a conical flow partition structure 26 which is an integral structure therewith at the bottom end of the columnar flow cavity 24. In order to realize the storage function of debris, it is necessary to make the longitudinal section of the conical flow partition structure 26 an "eight"-shaped structure, and the horizontal height of the top of the conical flow partition structure 26 is higher than the horizontal height of the debris discharge port. The bottom of the vertical shell 21 is provided with a debris discharge port 27 which connects the bottom of the columnar flow cavity 24 and the external space, and the discharge port of the debris discharge port 27 is inserted with a debris blocking cap 28.

[0020] For centrifugal debris removal, see Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 , it is necessary to set up a rotating filtering mechanism 3, which is provided with an inner rotating disk 31 placed inside the cylindrical flow cavity 24 and capable of rotating, a bottom cone 38 located directly below the inner rotating disk 31 and capable of rotating with the inner rotating disk 31, and a conical filter 39 installed on the circumferential side of the inner rotating disk 31 and the bottom cone 38 and capable of rotating with both, and capable of filtering the flowing steam. The rotating pulley 33 will drive the conical filter 39 to rotate, and the debris attached to the outer circumferential surface of the conical filter 39 will be removed. It will be thrown to the surroundings under the action of centrifugal force, and fall on the periphery of the conical flow partition structure 26 under the action of gravity. When the conical filter screen 39 needs to be deeply cleaned, the drive motor and the distiller are turned off, and then an air compressor is selected, and the air outlet of the air compressor is connected to the No. 1 gas flow hole 35. The air compressor is started to allow high-pressure gas to enter the conical filter chamber 310 and flow to the conical filter screen 39, so that the debris blocked in the conical filter screen 39 is cleared, thereby achieving deep cleaning.

[0021] For the specific structure of the rotary filtering mechanism 3, please refer to Figure 6 and Figure 7 , including an inner rotating disk 31 installed in the cylindrical flow cavity 24 through a mechanical sealing structure, a hollow rotating shaft 32 which is an integral structure with the inner rotating disk 31 and passes through the No. 1 component mounting hole 25 is arranged at the center of the upper end surface of the inner rotating disk 31, the hollow rotating shaft 32 is installed on the circumferential inner wall of the No. 1 component mounting hole 25 through a mechanical sealing structure at the periphery of the shaft body located inside the No. 1 component mounting hole 25, the hollow rotating shaft 32 is provided with a pulley 33 which is an integral structure with the inner rotating disk 31 at the periphery of the shaft body located above the No. 1 component mounting hole 25, a component mounting groove 36 with an upward concave structure is arranged at the bottom center of the inner rotating disk 31, the interior of the hollow rotating shaft 32 is provided with a bottom end connected to the component mounting groove 36, and a No. 1 gas in an open state at the top. flow hole 35, a removable gas blocking cap 34 is inserted into the top of the No. 1 gas flow hole 35, and a bottom cone 38 located directly below it is installed inside the component mounting groove 36 through a fan-shaped fixing frame 37, and a conical filter screen 39 is installed in an edge-sealed manner on the circumferential surface of the bottom cone 38 and the inner rotating disk 31. In order to achieve normal flow of steam, it is necessary to make the longitudinal section of the conical filter screen 39 an "eight"-shaped structure, and the bottom horizontal height of the conical filter screen 39 is higher than the horizontal height of the top of the conical flow partition structure 26. The inner circumferential surface of the conical filter screen 39 constitutes a closed conical filter chamber 310, and the inner rotating disk 31 is provided with a plurality of No. 2 gas flow holes 311 connecting the top thereof and the conical filter chamber 310.

[0022] When in use, proceed as follows: S1: dock the bottom connecting plate 23 with the exhaust port of the distiller used to distill hydrochloric acid, and dock the gas discharge hole 29 with the air inlet of the condenser; S2: select a fixed drive motor, install an external pulley on the rotor end of the drive motor, and then link the pulley 33 with the pulley at the rotor end through a belt; S3: turn on the distiller and the drive motor, the hydrochloric acid vapor formed by the distiller enters the gas flow channel 22, and enters the cylindrical flow cavity 24 through the gap between the conical flow partition structure 26 and the bottom conical body 38, and flows upward. The flowing hydrochloric acid vapor and impurities pass through the conical filter screen 39. At this time, the hydrochloric acid vapor will pass through the conical filter screen 39 into the conical filter cavity 310, and pass through the No. 2 gas flow hole 311 and the gas discharge hole 29 to the condenser in turn. 39, and the debris will be blocked on the outer circumference of the conical filter screen 39; S4: the rotating pulley 33 will drive the conical filter screen 39 to rotate, and the debris attached to the outer circumference of the conical filter screen 39 will be thrown out to the surroundings under the action of centrifugal force, and fall on the periphery of the conical flow partition structure 26 under the action of gravity. When it is necessary to deeply clean the conical filter screen 39, turn off the drive motor and the distiller, and then select an air compressor, connect the air outlet of the air compressor with the No. 1 gas flow hole 35, start the air compressor, so that the high-pressure gas enters the conical filter cavity 310 and flows to the conical filter screen 39, so that the debris blocked in the conical filter screen 39 is unblocked, and deep cleaning is achieved; S5: regularly open the debris blocking cap 28, take out the debris deposited in the columnar flow cavity 24, and the debris can be cleaned.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for electronic grade hydrochloric acid, comprising a support leg (1) having a supporting effect, characterized in that: Also includes, A steam flow guiding mechanism (2), wherein a vertical shell (21) installed at the center of the supporting leg (1) is provided inside the vertical shell (21), a columnar flow cavity (24) provided inside the vertical shell (21) and used for steam flow, and a conical flow partition structure (26) provided in the bottom area of ​​the vertical shell (21) and used for isolating separated debris; A rotary filter mechanism (3) is provided inside which is provided an inner rotary disk (31) which is placed inside the cylindrical flow cavity (24) and is capable of rotating, a bottom cone (38) which is located directly below the inner rotary disk (31) and is capable of rotating with the inner rotary disk (31), and a cone filter (39) which is installed on the circumferential side surfaces of the inner rotary disk (31) and the bottom cone (38) and is capable of rotating with both and is capable of filtering the flowing steam.

2. The production device of electronic grade hydrochloric acid according to claim 1, characterized in that: The steam flow guiding mechanism (2) comprises a vertical shell (21), a gas flow channel (22) with a relatively smaller diameter is arranged at the bottom of the vertical shell (21), a bottom connecting plate (23) with an integral structure is arranged at the bottom periphery of the gas flow channel (22), a columnar flow cavity (24) is arranged inside the vertical shell (21), the bottom end of the columnar flow cavity (24) is connected to the top end of the gas flow channel (22), and a component installation portion (23) connected to the top end of the columnar flow cavity (24) is arranged in the central area of ​​the vertical shell (21). The top of the vertical housing (21) is provided with a gas discharge hole (29) on one side of the first component mounting hole (25) and connected to the external space and the top of the columnar flow cavity (24); the bottom of the vertical housing (21) is provided with a conical flow partition structure (26) integral with the columnar flow cavity (24); the bottom of the vertical housing (21) is provided with a debris discharge port (27) connecting the bottom of the columnar flow cavity (24) and the external space; the discharge port of the debris discharge port (27) is inserted with a debris blocking cap (28).

3. The production device of electronic grade hydrochloric acid according to claim 2, characterized in that: The longitudinal section of the conical flow partition structure (26) is an "eight"-shaped structure, and the horizontal height of the top end of the conical flow partition structure (26) is higher than the horizontal height of the debris discharge port.

4. The production device of electronic grade hydrochloric acid according to claim 3, characterized in that: The rotary filtering mechanism (3) comprises an inner rotating disk (31) installed inside the cylindrical flow cavity (24) through a mechanical sealing structure, a hollow rotating shaft (32) which is integrally formed with the inner rotating disk (31) and passes through the No. 1 component mounting hole (25) is arranged at the center of the upper end surface of the inner rotating disk (31), the hollow rotating shaft (32) is installed on the circumferential inner wall of the No. 1 component mounting hole (25) at the periphery of the shaft body located inside the No. 1 component mounting hole (25) through the mechanical sealing structure, the hollow rotating shaft (32) is provided with a pulley (33) which is integrally formed with the inner rotating disk (31) at the periphery of the shaft body located above the No. 1 component mounting hole (25), and a component mounting groove (36) with an upwardly concave structure is arranged at the bottom center of the inner rotating disk (31). The hollow rotating shaft (32) is provided with a bottom connecting component mounting groove (36) and a No. 1 gas flow hole (35) in an open state at the top. A removable gas blocking cap (34) is inserted into the top of the No. 1 gas flow hole (35). The component mounting groove (36) is provided with a bottom cone (38) located directly below it through a fan-shaped fixing frame (37). A conical filter screen (39) is installed in a sealed edge manner on the circumferential surface of the bottom cone (38) and the inner rotating disk (31). The inner circumferential surface of the conical filter screen (39) constitutes a closed conical filter chamber (310). The inner rotating disk (31) is provided with a plurality of No. 2 gas flow holes (311) that are connected to the top of the inner rotating disk and the conical filter chamber (310).

5. The production device of electronic grade hydrochloric acid according to claim 4, characterized in that: The longitudinal section of the conical filter screen (39) is an "eight"-shaped structure.

6. The production device of electronic grade hydrochloric acid according to claim 5, characterized in that: The bottom level of the conical filter screen (39) is higher than the top level of the conical flow partition structure (26).

7. A method for using the production device of electronic grade hydrochloric acid according to any one of claims 1 to 6, characterized in that: The following steps are included: S1: docking the bottom connecting plate (23) with the exhaust port of a distiller for distilling hydrochloric acid, and docking the gas exhaust hole (29) with the gas inlet of the condenser; S2: A fixed drive motor is selected, an external pulley is installed on the rotor end of the drive motor, and then the pulley (33) is linked to the pulley on the rotor end through a belt; S3: Turn on the distiller and the drive motor, the hydrochloric acid vapor formed by the distiller enters the gas flow channel (22), and enters the cylindrical flow cavity (24) through the gap between the conical flow partition structure (26) and the bottom conical body (38), and flows upward. The flowing hydrochloric acid vapor and impurities pass through the conical filter (39). At this time, the hydrochloric acid vapor will pass through the conical filter (39) into the conical filter cavity (310), and flow to the condenser through the second gas flow hole (311) and the gas discharge hole (29) in sequence, while the impurities will be blocked on the outer circumferential surface of the conical filter (39); S4: The rotating pulley (33) drives the conical filter (39) to rotate. The debris attached to the outer circumferential surface of the conical filter (39) is thrown out to the surroundings under the action of centrifugal force and falls on the periphery of the conical flow partition structure (26) under the action of gravity. When the conical filter (39) needs to be cleaned in depth, the drive motor and the distiller are turned off, and then an air compressor is selected, and the air outlet of the air compressor is connected to the No. 1 gas flow hole (35). The air compressor is started, so that high-pressure gas enters the conical filter cavity (310) and flows toward the conical filter (39), so that the debris blocked in the conical filter (39) is cleared, thereby achieving deep cleaning; S5: Regularly open the debris blocking cap (28) to remove the debris deposited in the columnar flow cavity (24), thereby achieving the cleaning of the debris.

Images