Reaction equipment and method for removing calcium and magnesium impurities based on potassium chloride solution

Abstract

The invention provides reaction equipment and method for removing calcium and magnesium impurities based on a potassium chloride solution, the reaction equipment comprises a first reaction module and a second reaction module connected with the first reaction module through a liquid guide module, the first reaction module comprises a first reaction tank, a first discharge pipe and a first control valve, the device comprises a first supporting leg, a first top cover, a first feeding hopper, a first vertical moving type stirring unit, a liquid pumping pipe, a liquid pumping hose, a liquid taking pipe, a first telescopic push rod, a first transverse rod, a first guide insertion rod and a first guide insertion hole. According to the reaction equipment and method for removing calcium and magnesium impurities based on the potassium chloride solution, the basic requirement for removing calcium and magnesium ions in the potassium chloride solution can be met, and the calcium and magnesium ions in the potassium chloride solution can be removed by fully stirring and mixing the potassium chloride solution and the alkali solution; the thoroughness of removing the impurities in the potassium chloride solution is improved, so that the use requirements of people are better met.

Description

Technical Field

[0001] The invention belongs to the technical field of potassium chloride solution treatment, and in particular relates to a reaction device and a method for removing calcium and magnesium impurities based on potassium chloride solution. Background Art

[0002] In the process of production and processing, it is usually necessary to remove calcium and magnesium impurities in the potassium chloride container, and add HCL to adjust the pH value to meet the quality requirements of potassium chloride solution for the production of high-purity KCL. The method used to remove calcium and magnesium ions is usually to first add potassium chloride solution and alkaline solution to the primary reaction barrel, remove magnesium ions, and then add the solution in the reaction barrel to the secondary reaction barrel, and add alkaline solution to the secondary reaction barrel, and then remove calcium ions. Therefore, in the process of removing calcium and magnesium impurities from potassium chloride solution, reaction equipment is required.

[0003] Although the existing reaction equipment can meet the basic needs of removing calcium and magnesium impurities from potassium chloride solution, the stirring structure used can often only stir the solution at a fixed position. Since the stirring structure cannot move vertically and there are gaps between the stirring blades, the stirring structure cannot fully stir the solution, which in turn causes the solutions to be unable to fully mix and react, which in turn affects the removal effect of impurities such as calcium and magnesium ions.

[0004] For example, the utility model with the announcement number CN 208493347 U discloses an integrated reaction-clarification device. In the technical solution of this patent, the stirring structure used can only stir the solution at a specific position, which will lead to a blind spot for stirring and the solution cannot be fully stirred and mixed, thereby affecting the effect of the precipitation reaction of impurities in the solution, thereby affecting the thoroughness of removing the impurity ions in the solution. Summary of the invention

[0005] In view of this, the present invention aims at the deficiencies in the prior art and provides a reaction device and method for removing calcium and magnesium impurities based on potassium chloride solution, which can not only meet the basic demand for removing calcium and magnesium ions in potassium chloride solution, but also improve the thoroughness of removing impurities in potassium chloride solution by fully stirring and mixing the potassium chloride solution and the alkaline solution in and out, thereby better meeting people's use needs.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a reaction device for removing calcium and magnesium impurities based on potassium chloride solution, comprising a first reaction module and a second reaction module connected to the first reaction module through a liquid guide module, the first reaction module comprising a first reaction tank with an open top and a conical bottom, a first discharge pipe is arranged at the bottom of the first reaction tank, a first control valve is arranged on the first discharge pipe, a first supporting leg is arranged at the side end of the bottom of the first reaction tank, a first top cover is detachably arranged on the top of the first reaction tank, and a The first feeding hopper and the first top cover are also provided with a first vertically movable stirring unit, a liquid extraction tube is penetrated through the first top cover, a liquid extraction hose is provided at the lower end of the liquid extraction tube, a liquid collection tube is provided at the lower end of the liquid extraction hose, and a first telescopic push rod is vertically provided on the first top cover, the output shaft of the first telescopic push rod is extended to the bottom of the top cover, a first cross bar connected with the side end of the liquid collection tube is provided at the lower end of the output shaft of the first telescopic push rod, a first guide plug rod passing through the first top cover is also provided on the top of the first cross bar, and a first guide socket matched with the first guide plug rod is provided on the first top cover.

[0007] As a further improvement of the present invention, the first vertically movable stirring unit includes a U-shaped first mounting frame arranged on the top of the top cover, a second telescopic push rod with an output shaft extending to the bottom of the top of the first mounting frame is vertically arranged on the top of the first mounting frame, a first horizontal plate is arranged at the lower end of the output shaft of the second telescopic push rod, a first stirring motor is vertically arranged at the bottom of the first horizontal plate, a first stirring shaft passing through the first top cover and extending to the inside of the first reaction tank is arranged at the lower end of the output shaft of the first stirring motor, a first stirring blade matching the first reaction tank is arranged at the side end of the first stirring shaft, a first scraper plate matching the first reaction tank is arranged at the side end of the first stirring blade, and a second through hole matching the first stirring shaft is arranged on the first top cover.

[0008] As a further improvement of the present invention, the second reaction module includes a second reaction tank with an open top and a conical lower end, a second discharge pipe is arranged at the bottom of the second reaction tank, a second control valve is arranged on the second discharge pipe, a second supporting leg is arranged at the bottom side end of the second reaction tank, a second top cover is detachably arranged on the top of the second reaction tank, a second feed hopper is arranged on the second top cover, a second vertically movable stirring unit is arranged on the top of the second top cover, a liquid inlet pipe is also arranged on the second top cover, a liquid discharge pipe is also penetrated through the second top cover, a liquid discharge pump is also arranged on the liquid discharge pipe, a liquid discharge hose is arranged at the lower end of the liquid discharge pipe, a liquid discharge pipe is arranged at the lower end of the liquid discharge hose, a third telescopic push rod is also vertically arranged on the second top cover, the output shaft of the third telescopic push rod is extended to the bottom of the top cover, a second cross bar connected to the side end of the liquid discharge pipe is arranged at the lower end of the output shaft of the third telescopic push rod, a second guide plug rod passing through the second top cover is also arranged on the top of the second cross bar, and a second guide socket matched with the second guide plug rod is arranged on the second top cover.

[0009] As a further improvement of the present invention, the liquid guiding module includes a liquid guiding tube connected to the upper end of the liquid extraction tube at one end and connected to the upper end of the liquid inlet tube at the other end, and a pump body is arranged on the liquid guiding tube.

[0010] As a further improvement of the present invention, the second vertically movable stirring unit includes a U-shaped second mounting frame arranged on a second top cover, a fourth telescopic push rod with an output shaft extending to the bottom of the top of the second mounting frame is vertically arranged on the top of the second mounting frame, a second cross plate is arranged at the lower end of the output shaft of the fourth telescopic push rod, a second stirring motor is vertically arranged at the bottom of the second cross plate, a second stirring shaft passing through the second top cover is arranged at the lower end of the output shaft of the second stirring motor, a second stirring blade compatible with the second reaction tank is arranged on the second stirring shaft, a second scraper plate compatible with the second reaction tank is arranged on the side end of the second stirring blade, and a second through hole compatible with the second stirring shaft is arranged on the second top cover.

[0011] As a further improvement of the present invention, both ends of the first transverse plate are respectively provided with first connecting sleeves which are slidably connected to the corresponding side ends of the first mounting frame.

[0012] As a further improvement of the present invention, both ends of the second transverse plate are respectively provided with second connecting sleeves which are slidably connected to the corresponding side ends of the second mounting frame.

[0013] As a further improvement of the present invention, a first material extraction pump is provided on the first discharge pipe, and a second material extraction pump is provided on the second discharge pipe; a first transparent observation window is provided on the side end of the first reaction tank, and a second transparent observation window is provided on the side end of the second reaction tank.

[0014] As a further improvement of the present invention, the first top cover is clamped and fixed to the first reaction tank, and the first top cover is also provided with a first fixing bolt for threadedly fixing the first reaction tank, and the first reaction tank is provided with a first threaded fixing hole compatible with the first fixing bolt; the second top cover is clamped and fixed to the second reaction tank, and the second top cover is also provided with a second fixing bolt for threadedly fixing the second reaction tank, and the second reaction tank is provided with a second threaded fixing hole compatible with the first fixing bolt.

[0015] A method for removing calcium and magnesium impurities based on potassium chloride solution, based on the above reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution, comprises the following steps:

[0016] S1, adding a certain amount of potassium chloride solution and 10% potassium hydroxide solution into the first reaction tank through the first feed hopper, and then stirring and mixing the mixture of potassium chloride solution and potassium hydroxide solution for no less than 4 hours through the first vertical movable stirring unit, so that magnesium ions react chemically with the potassium hydroxide solution to form magnesium hydroxide precipitate, and then suspending the stirring treatment of the mixed solution, and letting it stand, so that the magnesium ion impurity precipitate settles to the bottom of the first reaction tank, and the mixed solution becomes the supernatant located on the upper layer of the impurity precipitate, and the upper layer of the clear liquid is transferred to the second reaction tank through the cooperation of the liquid guide tube, the pump body, the first telescopic push rod, the liquid extraction tube, the liquid extraction hose, the liquid collection tube, the first cross bar and the liquid inlet tube;

[0017] S2, adding an appropriate amount of clean water into the first reaction tank through the first feed hopper, and stirring the mixture of the clean water and the magnesium ion impurity precipitate to form a magnesium ion impurity mixed liquid, and then opening the first control valve to discharge the magnesium ion impurity mixed liquid from the first reaction tank through the first liquid outlet pipe;

[0018] S3, adding a certain amount of 10% potassium carbonate solution into the second reaction tank through the second feed hopper, and then stirring and mixing the potassium carbonate solution and the supernatant from the first reaction tank through the second vertical movable stirring unit, and performing the stirring and mixing treatment for not less than 4 hours, so that the magnesium ions and the potassium hydroxide solution react chemically to form calcium carbonate precipitation, and then suspending the stirring treatment of the mixed solution, and letting it stand, so that the calcium ion impurity precipitate settles to the bottom of the second reaction tank, and the mixed solution becomes the supernatant located on the upper layer of the impurity precipitate, and then the upper layer of the clear liquid is transferred out of the second reaction tank through the cooperation of the drainage pipe, the drainage pump, the third telescopic push rod, the drainage hose and the second cross bar;

[0019] S4, adding an appropriate amount of clean water into the second reaction tank through the second feed hopper, and stirring the mixture of the clean water and the calcium ion impurity precipitate to form a calcium ion impurity mixed liquid, and then opening the second control valve to discharge the calcium ion impurity mixed liquid from the second reaction tank through the second liquid outlet pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Firstly, the first stirring motor, the first stirring shaft and the first stirring blade can be adjusted vertically through the second telescopic push rod, so as to fully stir the solution in the first reaction tank, and the first stirring blade can drive the first scraper plate to scrape and clean the material adhering to the inner wall of the first reaction tank, so that the reaction material can fully react and the precipitated material can be discharged thoroughly.

[0022] Secondly, the second stirring motor, the second stirring shaft and the second stirring blade can be adjusted vertically through the fourth telescopic push rod, so as to fully stir the solution in the second reaction tank, and the second stirring blade can drive the second scraper plate to scrape and clean the material adhering to the inner wall of the second reaction tank, so that the reaction material can fully react and the precipitated material can be discharged thoroughly.

[0023] Thirdly, through the first connecting sleeve, the first cross plate can be smoothly moved vertically relative to the first mounting frame, and the first telescopic push rod can be prevented from being damaged by the lateral force; through the second connecting sleeve, the second cross plate can be smoothly moved vertically relative to the second mounting frame, and the second telescopic push rod can be prevented from being damaged by the lateral force.

[0024] Fourthly, after the magnesium ion precipitate and the supernatant in the first reaction tank are separated into layers, the first telescopic push rod can be used to make the lower end of the liquid collection tube match the upper liquid level of the supernatant, and then the pump body can be started to transfer the supernatant in the first reaction tank to the second reaction tank through the liquid collection tube, liquid collection hose, liquid suction tube, liquid guide tube and liquid inlet tube. During the transfer process, the position of the liquid collection tube can be continuously adjusted by the first telescopic push rod, so that the position of the liquid collection tube is always matched with the liquid level of the supernatant in the first reaction tank until the extraction and transfer of the supernatant in the first reaction tank is completed.

[0025] Fifth, after the calcium ion precipitate and the supernatant in the second reaction tank are separated into layers, the third telescopic push rod can be used to make the lower end of the liquid outlet pipe match the upper liquid level of the supernatant, and then the drainage pump can be started to transfer the supernatant in the second reaction tank to the second reaction tank through the liquid outlet pipe, the drainage hose and the drainage pipe. During the transfer process, the position of the liquid collection pipe can be continuously adjusted by the third telescopic push rod, so that the position of the liquid collection pipe is always matched with the liquid level of the supernatant in the second reaction tank until the extraction and transfer of the supernatant in the second reaction tank is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the first top cover, the liquid extraction pipe, the liquid extraction hose, the liquid extraction pipe, the first telescopic push rod, the first cross bar, the first guide plug rod, the first stirring shaft, the first stirring blade, and the first scraper plate of the present invention;

[0029] Figure 3It is a structural schematic diagram of the first top cover, the first guide socket, the first mounting frame, the first horizontal plate, and the first stirring motor of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the second top cover, the liquid inlet pipe, the liquid discharge hose, the liquid outlet pipe, the third telescopic push rod, the second cross bar, the second guide plug rod, the second stirring shaft, the second stirring blade, and the second scraper plate of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the second top cover, liquid inlet pipe, liquid discharge pipe, liquid discharge pump, second guide jack, second mounting bracket, second stirring motor and second through hole of the present invention.

[0032] In the figure: 101, first reaction tank; 102, first discharge pipe; 103, first control valve; 104, first support leg; 105, first top cover; 106, first feed hopper; 107, liquid extraction pipe; 108, liquid extraction hose; 109, liquid extraction pipe; 110, first telescopic push rod; 111, first cross bar; 112, first guide plug rod; 113, first guide plug hole; 114, first mounting frame; 115, second telescopic push rod; 116, first cross plate; 117, first stirring motor; 118, first stirring shaft; 119, first stirring blade; 120, first scraper plate; 121, second through hole; 201, second reaction tank; 202, second discharge pipe; 203, second control valve; 204, second support leg; 205, second Top cover; 206, second feed hopper; 207, liquid inlet pipe; 208, liquid discharge pipe; 209, liquid discharge pump; 210, liquid discharge hose; 211, liquid outlet pipe; 212, third telescopic push rod; 213, second cross bar; 214, second guide plug rod; 215, second guide plug hole; 216, second mounting frame; 217, fourth telescopic push rod; 218, second cross plate; 219, second stirring motor; 220, second stirring shaft; 221, second stirring blade; 222, second scraper plate; 223, second through hole; 301, liquid guide pipe; 302, pump body; 401, first connecting sleeve; 402, second connecting sleeve; 403, first material pump; 404, second material pump; 405, first fixing bolt; 406, second fixing bolt. DETAILED DESCRIPTION

[0033] In order to better understand the present invention, the content of the present invention is further clearly set forth in conjunction with the embodiments below, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0034] like Figure 1 ,2 3, a reaction device for removing calcium and magnesium impurities based on potassium chloride solution, comprising a first reaction module and a second reaction module connected to the first reaction module through a liquid guide module, the first reaction module comprising a first reaction tank 101 with an open top and a conical bottom, a first discharge pipe 102 is arranged at the bottom of the first reaction tank 101, a first control valve 103 is arranged on the first discharge pipe 102, a first supporting leg 104 is arranged at the bottom side end of the first reaction tank 101, a first top cover 105 is detachably arranged on the top of the first reaction tank 101, a first feed hopper 106 is arranged on the first top cover 105, and a first control valve 103 is arranged on the first top cover 105. A vertically movable stirring unit, a first top cover 105 is provided with a liquid extraction pipe 107, a liquid extraction hose 108 is provided at the lower end of the liquid extraction pipe 107, a liquid extraction pipe 109 is provided at the lower end of the liquid extraction hose 108, a first telescopic push rod 110 with an output shaft extending to the bottom of the top cover is also vertically provided on the first top cover 105, a first cross bar 111 connected to the side end of the liquid extraction pipe 109 is provided at the lower end of the output shaft of the first telescopic push rod 110, a first guide plug rod 112 passing through the first top cover 105 is also provided at the top of the first cross bar 111, and a first guide plug hole 113 matched with the first guide plug rod 112 is provided on the first top cover 105. Through the cooperation of the first guide plug rod 112 and the first guide plug hole 113, it is possible to prevent the first telescopic push rod 110 from being damaged by radial force.

[0035] like Figure 1 , 2 As shown in Figure 3, the first vertically movable stirring unit includes a U-shaped first mounting frame 114 arranged on the top of the top cover, a second telescopic push rod 115 with an output shaft extending to the bottom of the top of the first mounting frame 114 is vertically arranged on the top of the first mounting frame 114, a first cross plate 116 is arranged at the lower end of the output shaft of the second telescopic push rod 115, a first stirring motor 117 is vertically arranged at the bottom of the first cross plate 116, a first stirring shaft 118 passing through the first top cover 105 and extending to the inside of the first reaction tank 101 is arranged at the lower end of the output shaft of the first stirring motor 117, a first stirring blade 119 matched with the first reaction tank 101 is arranged at the side end of the first stirring shaft 118, a first scraper plate 120 matched with the first reaction tank 101 is arranged at the side end of the first stirring blade 119, and a second through hole 223121 matched with the first stirring shaft 118 is arranged on the first top cover 105.

[0036] like Figure 1 , 4As shown in Figure 5, the second reaction module includes a second reaction tank 201 with an open top and a conical lower end, a second discharge pipe 202 is provided at the bottom of the second reaction tank 201, a second control valve 203 is provided on the second discharge pipe 202, a second support leg 204 is provided at the bottom side end of the second reaction tank 201, a second top cover 205 is detachably provided on the top of the second reaction tank 201, a second feed hopper 206 is provided on the second top cover 205, a second vertically movable stirring unit is provided on the top of the second top cover 205, a liquid inlet pipe 207 is also provided on the second top cover 205, and a discharge valve 206 is also provided through the second top cover 205. Liquid pipe 208, a liquid discharge pump 209 is also provided on the liquid discharge pipe 208, a liquid discharge hose 210 is provided at the lower end of the liquid discharge pipe 208, a liquid outlet pipe 211 is provided at the lower end of the liquid discharge hose 210, a third telescopic push rod 212 with an output shaft extending to the bottom of the top cover is also vertically provided on the second top cover 205, a second cross bar 213 connected to the side end of the liquid outlet pipe 211 is provided at the lower end of the output shaft of the third telescopic push rod 212, a second guide plug rod 214 passing through the second top cover 205 is also provided on the top of the second cross bar 213, and a second guide plug hole 215 matched with the second guide plug rod 214 is provided on the second top cover 205. Through the cooperation of the second guide plug rod 214 and the second guide plug hole 215, the third telescopic push rod 212 can be prevented from being damaged by radial force.

[0037] like Figure 1 As shown, the liquid guiding module includes a liquid guiding tube 301 connected to the upper end of the liquid extraction tube 107 at one end and connected to the upper end of the liquid inlet tube 207 at the other end, and a pump body 302 is arranged on the liquid guiding tube 301 .

[0038] like Figure 1 , 4 As shown in Figure 5, the second vertically movable stirring unit includes a U-shaped second mounting frame 216 arranged on the second top cover 205, and the top of the second mounting frame 216 is vertically provided with a fourth telescopic push rod 217 whose output shaft extends to the bottom of the top of the second mounting frame 216, and the lower end of the output shaft of the fourth telescopic push rod 217 is provided with a second cross plate 218, and the bottom of the second cross plate 218 is vertically provided with a second stirring motor 219, and the lower end of the output shaft of the second stirring motor 219 is provided with a second stirring shaft 220 passing through the second top cover 205, and the second stirring shaft 220 is provided with a second stirring blade 221 matched with the second reaction tank 201, and the side end of the second stirring blade 221 is provided with a second scraper plate 222 matched with the second reaction tank 201, and the second top cover 205 is provided with a second through hole 223121 matched with the second stirring shaft 220.

[0039] The user can first add a certain amount of potassium chloride solution and 10% potassium hydroxide solution into the first reaction tank 101 through the first feed hopper 106, and then start the first stirring motor 117, so that the first stirring shaft 118 and the first stirring blade 119 stir and mix the mixture of the potassium chloride solution and the potassium hydroxide solution in the first reaction tank 101 for not less than 4 hours. During this process, the output shaft of the first telescopic push rod 110 can be adjusted to change and expand the stirring range of the first stirring shaft 118 and the first stirring blade 119, so that the magnesium ions react chemically with the potassium hydroxide solution to form magnesium hydroxide precipitates. After that, the stirring of the mixed solution is suspended and allowed to stand, so that the magnesium ion impurity precipitate settles to the bottom of the first reaction tank 101, and the mixed solution becomes the supernatant located on the upper layer of the impurity precipitate.

[0040] After the magnesium ion precipitate and the supernatant in the first reaction tank 101 are separated, the lower end of the liquid taking tube 109 can be matched with the upper liquid level of the supernatant through the first telescopic push rod 110, and then the pump body 302 can be started to transfer the supernatant in the first reaction tank 101 to the second reaction tank 201 through the liquid taking tube 109, the liquid taking hose, the liquid suction tube 107, the liquid guide tube 301 and the liquid inlet tube 207. During the transfer process, the position of the liquid taking tube 109 can be continuously adjusted by the first telescopic push rod 110, so that the position of the liquid taking tube 109 is always matched with the liquid level of the supernatant in the first reaction tank 101, until the extraction and transfer of the supernatant in the first reaction tank 101 is completed. After that, the output shaft of the first telescopic push rod 110 can be shortened by a certain length, so that the liquid taking tube 109 is reset upward to avoid affecting the rotation of the first stirring shaft 118, the first stirring blade 119 and the first scraper plate 120.

[0041] Afterwards, an appropriate amount of clean water can be added to the first reaction tank 101 through the first feed hopper 106, and the mixture of the clean water and the magnesium ion impurity precipitate can be stirred to form a magnesium ion impurity mixed liquid, and then the first control valve 103 is opened to discharge the magnesium ion impurity mixed liquid from the first reaction tank 101 through the first liquid outlet pipe 211.

[0042] Afterwards, the user can add a certain amount of 10% potassium carbonate solution into the second reaction tank 201 through the second feed hopper 206, and then the second stirring motor 219 causes the second stirring shaft 220 and the second stirring blade 221 to stir and mix the potassium carbonate solution with the supernatant from the first reaction tank 101 for no less than 4 hours. During this process, the output shaft of the third telescopic push rod 212 can be adjusted to change and expand the stirring range of the second stirring shaft 220 and the second stirring blade 221, so that the calcium ions react with the potassium carbonate solution to form calcium carbonate precipitation, and then the stirring of the mixed solution is suspended and allowed to stand, so that the calcium ion impurity precipitate settles to the bottom of the second reaction tank 201, and the mixed solution becomes the supernatant located on the upper layer of the impurity precipitate. Afterwards, the output shaft of the second telescopic push rod 115 can be shortened by a certain length, so that the liquid taking tube 109 is reset upward to avoid affecting the rotation of the second stirring shaft 220, the second stirring blade 221, and the second scraper plate 222.

[0043] After the calcium ion precipitate and the supernatant in the second reaction tank 201 are separated into layers, the output axis of the third telescopic push rod 212 can be extended downward by a certain length so that the lower end of the liquid outlet pipe 211 is matched with the upper liquid level of the supernatant, and then the drainage pump 209 can be started to transfer the supernatant in the second reaction tank 201 to the second reaction tank 201 through the liquid outlet pipe 211, the drainage hose 210 and the drainage pipe 208. During the transfer process, the position of the liquid collection pipe 109 can be continuously adjusted by the third telescopic push rod 212 so that the position of the liquid collection pipe 109 is always matched with the liquid level of the supernatant in the second reaction tank 201 until the extraction and transfer of the supernatant in the second reaction tank 201 is completed.

[0044] Afterwards, a proper amount of clean water can be added to the second reaction tank 201 through the second feed hopper 206, and the mixture of the clean water and the calcium ion impurity precipitate can be stirred to form a calcium ion impurity mixed solution, and then the second control valve 203 can be opened to discharge the calcium ion impurity mixed solution from the second reaction tank 201 through the second liquid outlet pipe 211. The first stirring motor 117, the first stirring shaft 118, and the first stirring blade 119 can be vertically adjusted by the second telescopic push rod 115, so that the solution in the first reaction tank 101 can be fully stirred, and the first stirring blade 119 can drive the first scraper plate 120 to scrape and clean the material adhered to the inner wall of the first reaction tank 101, so that the reaction material can fully react and the precipitated material can be completely discharged.

[0045] According to another embodiment of the present invention, Figure 1As shown, both ends of the first transverse plate 116 are respectively provided with first connecting sleeves 401 which are slidably connected to the corresponding side ends of the first mounting frame 114. Through the first connecting sleeves 401, the first transverse plate 116 can be smoothly moved vertically relative to the first mounting frame 114, and the first telescopic push rod 110 can be prevented from being damaged by the lateral force.

[0046] According to another embodiment of the present invention, Figure 1 As shown, the second cross plate 218 is also provided with second connecting sleeves 402 at both ends thereof, which are slidably connected to the corresponding side ends of the second mounting frame 216. The second connecting sleeves 402 enable the second cross plate 218 to move vertically smoothly relative to the second mounting frame 216, and prevent the second telescopic push rod 115 from being damaged by a lateral force.

[0047] According to another embodiment of the present invention, Figure 1 As shown, the first discharge pipe 102 is further provided with a first pumping pump 403, and the second discharge pipe 202 is further provided with a second pumping pump 404; the side end of the first reaction tank 101 is further provided with a first transparent observation window, and the side end of the second reaction tank 201 is further provided with a second transparent observation window. Through the first pumping pump 403, the magnesium ion precipitate mixed solution can be discharged from the first reaction tank 101 more quickly, and through the second pumping pump 404, the calcium ion precipitate mixed solution can be discharged from the second reaction tank 201 more quickly. Through the first transparent observation window, the user can conveniently check the liquid level of the supernatant in the first reaction tank 101 and conveniently discharge the supernatant in the first reaction tank 101, and through the second transparent observation window, the user can conveniently check the liquid level of the supernatant in the second reaction tank 201 and conveniently discharge the supernatant in the second reaction tank 201.

[0048] According to another embodiment of the present invention, Figure 1As shown, the first top cover 105 is clamped and fixed to the first reaction tank 101, and the first top cover 105 is also provided with a first fixing bolt 405 for screwing and fixing the first reaction tank 101, and the first reaction tank 101 is provided with a first threaded fixing hole matched with the first fixing bolt 405; the second top cover 205 is clamped and fixed to the second reaction tank 201, and the second top cover 205 is also provided with a second fixing bolt 406 for screwing and fixing the second reaction tank 201, and the second reaction tank 201 is provided with a second threaded fixing hole matched with the first fixing bolt 405. It is only necessary to clamp and fix the first top cover 105 to the first reaction tank 101, and then pass the first fixing bolt 405 through the side wall of the first top cover 105 and screw it to the first threaded fixing hole, so that the first top cover 105 and the first reaction tank 101 can be flexibly fixed; it is only necessary to clamp and fix the second top cover 205 to the second reaction tank 201, and then pass the second fixing bolt 406 through the side wall of the second top cover 205 and screw it to the second threaded fixing hole, so that the second top cover 205 and the second reaction tank 201 can be flexibly fixed.

[0049] Afterwards, the supernatant extracted from the second reaction tank 201 can be pumped into a buffer barrel, and HCL solution can be added to adjust the pH value of the solution. The pH value is then measured with a pH test paper, and the amount of HCL added is adjusted to make the pH value of the solution between 7.5 and 9.5. Finally, the clarified and pH-adjusted solution is transferred to a brine clearing barrel for the next process.

[0050] A method for removing calcium and magnesium impurities based on potassium chloride solution, based on the above reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution, comprises the following steps:

[0051] S1, adding a certain amount of potassium chloride solution and 10% potassium hydroxide solution into the first reaction tank 101 through the first feed hopper 106, and then stirring and mixing the mixture of potassium chloride solution and potassium hydroxide solution for no less than 4 hours through the first vertical movable stirring unit, so that magnesium ions react chemically with the potassium hydroxide solution to form magnesium hydroxide precipitate, and then suspending the stirring treatment of the mixed solution, and letting it stand, so that the magnesium ion impurity precipitate settles to the bottom of the first reaction tank 101, and the mixed solution becomes the supernatant located on the upper layer of the impurity precipitate, and the upper layer of the clear liquid is transferred to the second reaction tank 201 through the cooperation of the liquid guide tube 301, the pump body 302, the first telescopic push rod 110, the liquid extraction tube 107, the liquid extraction hose 108, the liquid collection tube 109, the first cross bar 111 and the liquid inlet tube 207;

[0052] S2, adding an appropriate amount of clean water into the first reaction tank 101 through the first feed hopper 106, and stirring the mixture of the clean water and the magnesium ion impurity precipitate to form a magnesium ion impurity mixed liquid, and then opening the first control valve 103, and discharging the magnesium ion impurity mixed liquid from the first reaction tank 101 through the first liquid outlet pipe 211;

[0053] S3, adding a certain amount of 10% potassium carbonate solution into the second reaction tank 201 through the second feed hopper 206, and then stirring and mixing the potassium carbonate solution and the supernatant from the first reaction tank 101 through the second vertical movable stirring unit, and performing the stirring and mixing treatment for not less than 4 hours, so that the magnesium ions and the potassium hydroxide solution react chemically to form calcium carbonate precipitation, and then suspending the stirring treatment of the mixed solution, and letting it stand, so that the calcium ion impurity precipitate settles to the bottom of the second reaction tank 201, and the mixed solution becomes the supernatant located on the upper layer of the impurity precipitate, and then the upper layer of the clear liquid is transferred out of the second reaction tank 201 through the cooperation of the drainage pipe 208, the drainage pump 209, the third telescopic push rod 212, the drainage hose 210 and the second cross bar 213;

[0054] S4, adding an appropriate amount of clean water into the second reaction tank 201 through the second feed hopper 206, and stirring the mixture of the clean water and the calcium ion impurity precipitate to form a calcium ion impurity mixed liquid, and then opening the second control valve 203, and discharging the calcium ion impurity mixed liquid from the second reaction tank 201 through the second liquid outlet pipe 211.

[0055] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A reaction device for removing calcium and magnesium impurities based on potassium chloride solution, comprising a first reaction module and a second reaction module connected to the first reaction module through a liquid guide module, characterized in that: The first reaction module comprises a first reaction tank (101) with an open top and a conical bottom, a first discharge pipe (102) being arranged at the bottom of the first reaction tank (101), a first control valve (103) being arranged on the first discharge pipe (102), a first support leg (104) being arranged at the side end of the bottom of the first reaction tank (101), a first top cover (105) being detachably arranged at the top of the first reaction tank (101), a first feed hopper (106) being arranged on the first top cover (105), a first vertically movable stirring unit being further arranged on the first top cover (105), and a liquid extraction pipe (107) being arranged through the first top cover (105). ), a liquid extraction hose (108) is provided at the lower end of the liquid extraction tube (107), a liquid collection tube (109) is provided at the lower end of the liquid extraction hose (108), a first telescopic push rod (110) with an output shaft extending to the bottom of the top cover is also vertically provided on the first top cover (105), a first cross bar (111) connected to the side end of the liquid collection tube (109) is provided at the lower end of the output shaft of the first telescopic push rod (110), a first guide plug rod (112) passing through the first top cover (105) is also provided at the top of the first cross bar (111), and a first guide plug hole (113) adapted to the first guide plug rod (112) is provided on the first top cover (105).

2. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution according to claim 1, characterized in that: The first vertically movable stirring unit comprises a U-shaped first mounting frame (114) arranged on the top of the top cover, a second telescopic push rod (115) having an output shaft extending to below the top of the first mounting frame (114) is vertically arranged on the top of the first mounting frame (114), a first horizontal plate (116) is arranged at the lower end of the output shaft of the second telescopic push rod (115), a first stirring motor (117) is vertically arranged at the bottom of the first horizontal plate (116), and a first stirring motor (117) is arranged at the lower end of the output shaft of the first stirring motor (117). A first stirring shaft (118) is provided which passes through the first top cover (105) and extends into the first reaction tank (101); a first stirring blade (119) which is compatible with the first reaction tank (101) is provided at the side end of the first stirring shaft (118); a first scraper plate (120) which is compatible with the first reaction tank (101) is provided at the side end of the first stirring blade (119); and a second through hole (223) (121) which is compatible with the first stirring shaft (118) is provided on the first top cover (105).

3. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution as claimed in claim 2, characterized in that: The second reaction module comprises a second reaction tank (201) with an open top and a conical lower end, a second discharge pipe (202) is arranged at the bottom of the second reaction tank (201), a second control valve (203) is arranged on the second discharge pipe (202), a second supporting leg (204) is arranged at the side end of the bottom of the second reaction tank (201), a second top cover (205) is detachably arranged on the top of the second reaction tank (201), a second feed hopper (206) is arranged on the second top cover (205), a second vertically movable stirring unit is arranged on the top of the second top cover (205), a liquid inlet pipe (207) is also arranged on the second top cover (205), and a liquid discharge pipe (203) is also arranged through the second top cover (205). 08), a liquid discharge pump (209) is also arranged on the liquid discharge pipe (208), a liquid discharge hose (210) is arranged at the lower end of the liquid discharge pipe (208), a liquid outlet pipe (211) is arranged at the lower end of the liquid discharge hose (210), a third telescopic push rod (212) whose output shaft extends to the bottom of the top cover is also vertically arranged on the second top cover (205), a second cross bar (213) connected to the side end of the liquid outlet pipe (211) is arranged at the lower end of the output shaft of the third telescopic push rod (212), a second guide plug rod (214) passing through the second top cover (205) is also arranged on the top of the second cross bar (213), and a second guide plug rod (214) adapted to the second guide plug rod (214) is arranged on the second top cover (205), and a second guide plug hole (215) adapted to the second guide plug rod (214) is arranged on the second top cover (205).

4. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution as claimed in claim 3, characterized in that: The liquid guiding module comprises a liquid guiding tube (301) connected at one end to the upper end of the liquid extraction tube (107) and at the other end to the upper end of the liquid inlet tube (207), and a pump body (302) is arranged on the liquid guiding tube (301).

5. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution as claimed in claim 4, characterized in that: The second vertically movable stirring unit comprises a U-shaped second mounting frame (216) arranged on the second top cover (205), a fourth telescopic push rod (217) with an output shaft extending to below the top of the second mounting frame (216) is vertically arranged on the top of the second mounting frame (216), a second horizontal plate (218) is arranged at the lower end of the output shaft of the fourth telescopic push rod (217), a second stirring motor (219) is vertically arranged at the bottom of the second horizontal plate (218), and the second stirring motor (219) is vertically arranged at the bottom of the second horizontal plate (218). The lower end of the output shaft of the mixing tank (19) is provided with a second stirring shaft (220) passing through the second top cover (205), the second stirring shaft (220) is provided with a second stirring blade (221) adapted to the second reaction tank (201), the side end of the second stirring blade (221) is provided with a second scraper plate (222) adapted to the second reaction tank (201), and the second top cover (205) is provided with a second through hole (223)(121) adapted to the second stirring shaft (220).

6. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution as claimed in claim 5, characterized in that: Both ends of the first transverse plate (116) are also respectively provided with first connecting sleeves (401) which are slidably connected to the corresponding side ends of the first mounting frame (114).

7. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution according to claim 6, characterized in that: Both ends of the second transverse plate (218) are also respectively provided with second connecting sleeves (402) which are slidably connected to the corresponding side ends of the second mounting frame (216).

8. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution as claimed in claim 7, characterized in that: The first discharge pipe (102) is also provided with a first extraction pump (403), and the second discharge pipe (202) is also provided with a second extraction pump (404); the side end of the first reaction tank (101) is also provided with a first transparent observation window, and the side end of the second reaction tank (201) is also provided with a second transparent observation window.

9. The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution as claimed in claim 8, characterized in that: The first top cover (105) is fixedly connected to the first reaction tank (101), and the first top cover (105) is also provided with a first fixing bolt (405) for screwing and fixing the first reaction tank (101), and the first reaction tank (101) is provided with a first threaded fixing hole matched with the first fixing bolt (405); the second top cover (205) is fixedly connected to the second reaction tank (201), and the second top cover (205) is also provided with a second fixing bolt (406) for screwing and fixing the second reaction tank (201), and the second reaction tank (201) is provided with a second threaded fixing hole matched with the first fixing bolt (405).

10. A method for removing calcium and magnesium impurities based on potassium chloride solution, characterized in that: The reaction equipment for removing calcium and magnesium impurities based on potassium chloride solution according to any one of claims 5 to 9 comprises the following steps: S1, adding a certain amount of potassium chloride solution and 10% potassium hydroxide solution into the first reaction tank (101) through the first feed hopper (106), and then stirring and mixing the mixture of the potassium chloride solution and the potassium hydroxide solution for not less than 4 hours through the first vertical movable stirring unit, so that the magnesium ions react chemically with the potassium hydroxide solution to form magnesium hydroxide precipitates, and then suspending the stirring treatment of the mixed solution and allowing it to stand, so that the magnesium ion impurity precipitate settles to the bottom of the first reaction tank (101), and the mixed solution becomes a supernatant located on the upper layer of the impurity precipitate, and the upper layer of the clear liquid is transferred to the second reaction tank (201) through the cooperation of the liquid guide tube (301), the pump body (302), the first telescopic push rod (110), the liquid extraction tube (107), the liquid extraction hose (108), the liquid collection tube (109), the first cross bar (111) and the liquid inlet tube (207); S2, adding an appropriate amount of clean water into the first reaction tank (101) through the first feed hopper (106), and stirring the mixture of the clean water and the magnesium ion impurity precipitate to form a magnesium ion impurity mixed liquid, and then opening the first control valve (103) to discharge the magnesium ion impurity mixed liquid from the first reaction tank (101) through the first liquid outlet pipe (211); S3, adding a certain amount of 10% potassium carbonate solution into the second reaction tank (201) through the second feed hopper (206), and then stirring and mixing the potassium carbonate solution and the supernatant from the first reaction tank (101) through the second vertical movable stirring unit, and performing the stirring and mixing treatment for not less than 4 hours, so that the magnesium ions and the potassium hydroxide solution react chemically to form calcium carbonate precipitation, and then suspending the stirring treatment of the mixed solution, and allowing it to stand, so that the calcium ion impurity precipitate settles to the bottom of the second reaction tank (201), and the mixed solution becomes the supernatant located on the upper layer of the impurity precipitate, and then the upper layer of the clear liquid is transferred out of the second reaction tank (201) through the cooperation of the drainage pipe (208), the drainage pump (209), the third telescopic push rod (212), the drainage hose (210) and the second cross bar (213); S4, adding an appropriate amount of clean water into the second reaction tank (201) through the second feed hopper (206), and stirring the mixture of the clean water and the calcium ion impurity precipitate to form a calcium ion impurity mixed liquid, and then opening the second control valve (203) to discharge the calcium ion impurity mixed liquid from the second reaction tank (201) through the second liquid outlet pipe (211).

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