Industrial salt slag treatment apparatus and industrial salt slag treatment method

Abstract

The application discloses an industrial salt slag treatment device and an industrial salt slag treatment method. In the industrial salt slag treatment device disclosed by the application, after being cooled, industrial salt slag enters a crushing machine through a feeding port of the crushing machine for crushing, and then small particles of the crushed industrial salt slag are sent out through a discharging port of the crushing machine by an air separation device arranged in the crushing machine. In this way, the dissolution speed can be improved by screening and dissolving the small particles. The discharging port of the crushing machine is connected with a feeding port of a presolubilizer, a spraying assembly is arranged in the presolubilizer, and the industrial salt slag is presolubilized by the spraying assembly after entering the presolubilizer. The presolubilized industrial salt slag solution formed after the presolubilization enters a salt dissolving tank for dissolution. In this way, the industrial salt slag is presolubilized before entering the salt dissolving tank for dissolution, so that the presolubilized solution of the industrial salt slag can be dissolved more quickly and more fully in the salt dissolving tank, the dissolution speed and the dissolution effect are improved, and the treatment efficiency of the industrial salt slag is improved.

Description

Technical Field

[0001] This application relates to the field of energy conservation and environmental protection technology, and more specifically, to an industrial salt slag treatment device and a method for treating industrial salt slag. Background Technology

[0002] During the treatment of industrial waste salt, industrial salt slag (molten salt slag) is generated after high-temperature treatment. After cooling, the industrial salt slag is coarsely crushed and then put into a salt dissolving tank for stirring and dissolution.

[0003] In the above-mentioned treatment methods, the industrial salt residue dissolves slowly and has a poor dissolution effect in the salt dissolving tank, resulting in low treatment efficiency of the industrial salt residue.

[0004] In conclusion, how to improve the dissolution rate and effect of industrial salt slag in order to improve the treatment efficiency of industrial salt slag is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide an industrial salt slag treatment device and a method for treating industrial salt slag, so as to improve the dissolution rate and dissolution effect of industrial salt slag and thus improve the treatment efficiency of industrial salt slag.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] An industrial salt slag treatment device, characterized in that it comprises: a crusher, an air classifier, a pre-dissolver, and a salt dissolving tank; wherein, the crusher includes a crusher inlet and a crusher outlet; the pre-dissolver includes a pre-dissolver inlet, a pre-dissolver outlet, and a pre-dissolver air outlet; the crusher inlet is used for industrial salt slag to enter, the crusher outlet is connected to the pre-dissolver inlet, and the air classifier is located inside the crusher; the pre-dissolver outlet is connected to the inlet of the salt dissolving tank; the pre-dissolver is equipped with a spray assembly, which is disposed between the pre-dissolver air outlet and the pre-dissolver inlet.

[0008] In some embodiments, the discharge port of the pulverizer is connected to the feed port of the pre-dissolver via a venturi tube, the venturi tube being provided with a nozzle located in the throat of the venturi tube, and the nozzle including an air inlet and a water inlet.

[0009] In some embodiments, the nozzle is rotatably connected to the venturi tube.

[0010] In some embodiments, the device further includes a demister and an induced draft fan. The demister includes an air inlet, a water inlet, and an air outlet. The pulverizer also includes an air inlet. The air inlet of the demister is connected to the air outlet of the pre-dissolver, the air outlet of the demister is connected to the air inlet of the induced draft fan, and the air outlet of the induced draft fan is connected to the air inlet of the pulverizer.

[0011] In some embodiments, the system further includes a shearing machine and a conveying pump; the outlet of the salt dissolving tank is connected to the inlet of the shearing machine, the outlet of the shearing machine is connected to the inlet of the conveying pump, and the outlet of the conveying pump is connected to the reflux port of the salt dissolving tank; a first control valve is provided between the outlet of the salt dissolving tank and the inlet of the shearing machine.

[0012] In some embodiments, the discharge port of the conveying pump is connected to a first conveying pipe and a second conveying pipe; the first conveying pipe is connected to the discharge port of the conveying pump and the return port of the salt tank, and a second control valve is provided on the first conveying pipe; the second conveying pipe is connected to the discharge port of the conveying pump and downstream equipment, the downstream equipment being located downstream of the industrial salt residue treatment equipment, and a third control valve is provided on the second conveying pipe.

[0013] In some embodiments, the bottom of the pre-dissolver is a conical section, the small end of the conical section is located in the salt dissolving tank, the pre-dissolver outlet is located at the small end of the conical section, and the pre-dissolver outlet is equipped with a flap valve, and the pre-dissolver inlet is higher than the conical section.

[0014] In some embodiments, the industrial salt slag treatment equipment is externally connected to production water, which is connected to a first water supply pipe, a second water supply pipe, a third water supply pipe, a fourth water supply pipe, and a fifth water supply pipe; the first water supply pipe is connected to the inlet of the spray head and is equipped with a fourth control valve; the second water supply pipe is connected to the spray assembly and is equipped with a fifth control valve; the third water supply pipe is connected to the inlet of the demister and is equipped with a sixth control valve; the fourth water supply pipe is connected to the inlet of the salt dissolving tank and is equipped with a seventh control valve; the fifth water supply pipe is connected to the flushing port of the salt dissolving tank and is equipped with a ninth control valve.

[0015] In some embodiments, the pulverizer further includes a circulating cooling water inlet and a circulating cooling water return outlet, the circulating cooling water inlet and the circulating cooling water return outlet being connected to a circulating cooling water pipe located inside the pulverizer.

[0016] An industrial salt residue treatment method includes: crushing the industrial salt residue and performing air separation on the crushed industrial salt residue; the air-separated industrial salt residue entering a pre-dissolving device; spraying water onto the industrial salt residue entering the pre-dissolving device to pre-dissolve and form a pre-solution; the pre-solution entering a salt dissolving tank, and stirring the pre-solution in the salt dissolving tank to form brine.

[0017] In some embodiments, the industrial salt slag is pulverized and air-separated, and the air-separated industrial salt slag is fed into the pre-dissolving tank. The industrial salt slag treatment method further includes:

[0018] The industrial salt residue separated by air enters a venturi tube, where nozzles spray water and compressed air onto the residue; the industrial salt residue passing through the venturi tube then enters the pre-dissolver.

[0019] In some embodiments, when the liquid level in the salt dissolving tank is higher than the first liquid level, the brine discharged from the salt dissolving tank is sheared and mixed, and the sheared and mixed brine is returned to the salt dissolving tank; when the liquid level in the salt dissolving tank is higher than the second liquid level, the brine discharged from the salt dissolving tank enters the downstream treatment process of industrial salt residue.

[0020] In the industrial salt slag treatment equipment provided in this application, the industrial salt slag, after cooling, enters the crusher through the feed inlet for crushing. Then, a wind classifier installed inside the crusher sends the small particles of the crushed industrial salt slag out through the discharge outlet of the crusher. This screening of small particles for dissolution increases the dissolution rate. The discharge outlet of the crusher is connected to the feed inlet of a pre-dissolver, which is equipped with a spray assembly. After entering the pre-dissolver, the industrial salt slag undergoes pre-dissolution through the spray assembly. The resulting pre-dissolved industrial salt slag solution then enters the salt dissolving tank for further dissolution. Thus, the industrial salt slag is pre-dissolved before entering the salt dissolving tank, allowing the pre-dissolved solution to dissolve faster and more completely in the tank, improving the dissolution rate and effect, and ultimately increasing the processing efficiency of the industrial salt slag. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the industrial salt residue treatment equipment provided in the embodiments of this application;

[0023] Figure 2 for Figure 1A schematic diagram of the throat cross-section of the Chinese-made choke tube in the industrial salt slag treatment equipment shown;

[0024] Figure 3 A flowchart of an industrial salt residue treatment method is provided for embodiments of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Crusher, 101-Crusher air inlet, 102-Circulating cooling water inlet, 103-Circulating cooling water return inlet, 104-Crusher feed inlet, 105-Crusher discharge outlet;

[0027] 2-Pre-dissolver, 201-Pre-dissolver inlet, 202-Pre-dissolver outlet, 203-Pre-dissolver outlet, 210-Spray assembly;

[0028] 3-Salt dissolving tank; 310-Stirring device;

[0029] 4-Shearing machine;

[0030] 5-Transfer pump;

[0031] 6-Demister, 601-Demister air inlet, 602-Demister air outlet, 603-Demister water outlet, 604-Demister first water inlet, 605-Demister second water inlet;

[0032] 7-Exhaust fan;

[0033] 8-Venturi tube, 801-Sprinkler head;

[0034] 9-Filter;

[0035] 10 - Air separation device;

[0036] 11-First control valve, 12-Second control valve, 13-Third control valve, 14-Fourth control valve, 15-Fifth control valve, 16-Sixth control valve, 17-Seventh control valve, 18-Eighth control valve, 19-Ninth control valve;

[0037] 21-First conveying pipeline, 22-Second conveying pipeline;

[0038] 31-First water supply pipeline, 32-Second water supply pipeline, 33-Third water supply pipeline, 34-Fourth water supply pipeline, 35-Fifth water supply pipeline. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise.

[0041] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0042] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0043] like Figure 1 As shown in the embodiment of this application, the industrial salt residue treatment equipment includes: a crusher 1, an air classifier 10, a pre-dissolving device 2, and a salt dissolving tank 3. The crusher 1 includes a crusher inlet 104 and a crusher outlet 105, and the pre-dissolving device 2 includes a pre-dissolving device inlet 201, a pre-dissolving device outlet 203, and a pre-dissolving device air outlet 202. Thus, after cooling, the industrial salt residue enters the crusher 1 through the crusher inlet 104 for crushing, and the crushed industrial salt residue is discharged through the crusher outlet 105.

[0044] The discharge port 105 of the pulverizer is connected to the inlet 201 of the pre-dissolver, and the air classifier 10 is located inside the pulverizer 1, so that the pulverized industrial salt residue is screened by the air classifier 10 and then conveyed to the pre-dissolver 2 through the discharge port 105 of the pulverizer. In this way, small particles of industrial salt residue can be screened into the pre-dissolver 2, so that the small particles of industrial salt residue can dissolve faster, thereby improving the dissolution rate of industrial salt residue.

[0045] To ensure the accuracy of screening industrial salt slag particles, such as Figure 1 As shown, the discharge port 105 of the crusher is higher than the feed port 104 of the crusher. The crushing component of the crusher 1 is located at the bottom of the crusher 1, and the air classifier 10 is close to the discharge port 105 of the crusher. This allows small industrial salt residue particles to move a certain distance towards the air classifier 10 before being screened by the air classifier 10 during the crushing and screening process in the crusher 1. Large industrial salt residue particles fall off and are crushed again during this process, ensuring the sufficiency of industrial salt residue crushing and the accuracy of particle screening, and further improving the dissolution rate of industrial salt residue.

[0046] like Figure 1 As shown, the pre-dissolver outlet 203 is connected to the inlet of the salt dissolving tank 3. A spray assembly 210 is installed inside the pre-dissolver 2, positioned between the pre-dissolver outlet 202 and the pre-dissolver inlet 201. The pre-dissolver outlet 202 is located at the top of the pre-dissolver 2. This allows the industrial salt slag to be pre-dissolved under the spraying action of the spray assembly 210 after entering the pre-dissolver 2. The resulting pre-dissolved solution then enters the salt dissolving tank 3 for further dissolution. This ensures faster and more complete dissolution of the industrial salt slag within the salt dissolving tank 3, improving the dissolution rate and efficiency, and ultimately increasing the processing efficiency of the industrial salt slag.

[0047] To further improve the pre-dissolution effect of industrial salt slag in pre-dissolution unit 2, such as Figure 1 As shown, the bottom of the pre-dissolver 2 is a conical section, with the small end of the conical section located in the salt dissolving tank 3, so that the pre-solution formed by the pre-dissolver 2 can directly enter the salt dissolving tank 3, reducing external pollution. The pre-dissolver outlet 203 is located at the small end of the conical section, and the pre-dissolver inlet 201 is higher than the conical section, so that after the industrial salt residue enters the interior of the pre-dissolver 2, it can move in a spiral motion along the inner wall of the conical section. In this way, the water sprayed by the spray assembly 210 can fully mix with the industrial salt residue, further improving the dissolution effect of the industrial salt residue.

[0048] In some embodiments, the spray assembly 210 is configured as two groups, and each group of spray assemblies 210 is provided with packing material below it to improve the gas-liquid fusion efficiency during the spraying process, achieve better dissolution of dust in industrial salt slag, and further improve the pre-dissolution effect of industrial salt slag in the pre-dissolver 2.

[0049] Since a large amount of mist will be generated during the operation of the spray assembly 210 inside the pre-dissolver 2, a built-in demisting device is installed on the top of the pre-dissolver 2 to achieve preliminary demisting of the pre-dissolver 2.

[0050] like Figure 1 As shown, the industrial salt slag treatment equipment provided in this application embodiment also includes a demister 6 and an induced draft fan 7. The demister 6 includes a demister air inlet 601, a demister water inlet, and a demister air outlet 602. The pulverizer 1 also includes a pulverizer air inlet 101. The demister air inlet 601 is connected to the pre-dissolving tank air outlet 202, the demister air outlet 602 is connected to the air inlet of the induced draft fan 7, and the air outlet of the induced draft fan 7 is connected to the pulverizer air inlet 101. In this way, under the action of the induced draft fan 7, the crushed industrial salt residue in the crusher 1 is blown into the pre-dissolver 2. The gas entering the pre-dissolver 2 enters the demister 6 through the pre-dissolver outlet 202. In the pre-dissolver 2, the gas is separated from the industrial salt residue, and the demister 6 demistates the pre-dissolver 2 to ensure the stable operation of the pre-dissolver 2. Afterwards, the gas flows back to the induced draft fan 7 through the demister outlet 602. This allows the gas to pass through the induced draft fan 7, crusher 1, pre-dissolver 2, demister 6, and induced draft fan 7 in sequence, forming a closed-loop circulation system, which reduces dust emission pollution and reduces pollution to the outside air.

[0051] Because the crushing process of the crusher 1 generates a large amount of heat, a circulating cooling water system is installed inside the crusher 1 to prevent the gas entering the crusher 1 from liquefying, such as... Figure 1 As shown, the crusher 1 includes a circulating cooling water inlet 102 and a circulating cooling water outlet 103. The circulating cooling water inlet 102 and the circulating cooling water outlet 103 are connected to a circulating cooling water pipe, and the circulating water cooling pipe is located inside the crusher 1 to cool the inside of the crusher 1 and prevent the gas from liquefying inside the crusher 1.

[0052] In practice, to ensure the working efficiency of the induced draft fan 7, the outlet of the induced draft fan 7 is also connected to an exhaust venting pipe. The exhaust venting pipe is equipped with an eighth control valve 18 and a filter 9. When the efficiency of the induced draft fan 7 decreases, the eighth control valve 18 opens so that the induced draft fan 7 can be vented after passing through the filter 9, thus ensuring the stable operation of the induced draft fan 7.

[0053] To further ensure the separation effect of gas and industrial salt residue in pre-dissolver 2, a flap valve is installed at the discharge port 203 of the pre-dissolver to achieve airlock discharge, thereby further ensuring the separation effect of gas and industrial salt residue and ensuring the dissolution effect of industrial salt residue.

[0054] Because continuous operation of the demister 6 results in a large internal pressure differential, it is necessary to flush the inside of the demister 6 with water through the demister inlet. Specifically, as follows: Figure 1As shown, the demister inlet includes a first demister inlet 604 and a second demister inlet 605. The two inlets enable all-round rinsing of the inside of the demister 6, ensuring the rinsing effect. The demister 6 also includes a demister outlet 603, which is connected to the brine tank 3. In this way, the liquid generated after rinsing the demister 6 is directly discharged into the brine tank 3 without additional treatment, simplifying the process.

[0055] Because the crusher 1 generates a large amount of dust during the crushing process of industrial salt slag, the dust will be blown into the pre-dissolver 2 by the induced draft fan 7. In order to further ensure the separation effect of gas and industrial salt slag in the pre-dissolver 2 and increase the dissolution rate of dust, such as Figures 1-2 As shown, the discharge port 105 of the crusher is connected to the feed port 201 of the pre-dissolver via a venturi tube 8. A nozzle 801 is provided at the throat of the venturi tube 8, and the nozzle 801 includes an air inlet and a water inlet. Compressed air and production water enter the nozzle 801 through the air inlet and the water inlet, respectively. In this way, the flow rate of the gas from the induced draft fan 7 increases when it passes through the throat of the venturi tube 8, which generates a negative pressure at the throat, thereby drawing in the production water and compressed air to form a mist. This mist allows the dust to merge with the dust particles to form particles, so that the dust particles can be better pre-dissolved under the spraying action of the spraying component 210 when they enter the pre-dissolver 2. This improves the separation effect of gas and industrial salt slag in the pre-dissolver 2 and increases the dissolution rate of dust.

[0056] It should be noted that the fog formed inside the venturi tube 8 can be water fog or dry fog, which are collectively referred to as fog in this article, and the embodiments of this application do not limit it.

[0057] To further improve the fusion effect of mist and dust inside the Venturi tube 8, the nozzle 801 is rotatably connected to the Venturi tube 8 via a universal joint, which expands the range of mist sprayed by the nozzle 801 and achieves full fusion of mist and dust. Furthermore, vibration is applied at the spray end of the nozzle 801 to cause secondary collision between water and compressed air to make atomization more complete, thereby improving the fusion effect of mist and dust.

[0058] The industrial salt residue, pre-dissolved in the pre-dissolver 2, enters the salt dissolving tank 3 for stirring and dissolution. The salt dissolving tank 3 is equipped with a stirring device 310. The outlet of the salt dissolving tank 3 is connected to a shearing machine 4 and a conveying pump 5. Specifically, the outlet of the salt dissolving tank 3 is connected to the inlet of the shearing machine 4, the outlet of the shearing machine 4 is connected to the inlet of the conveying pump 5, and the outlet of the conveying pump 5 is connected to the return port of the salt dissolving tank 3. A first control valve 11 is installed between the outlet of the salt dissolving tank 3 and the inlet of the shearing machine 4. When the brine in the salt dissolving tank 3 reaches the first liquid level, the first control valve 11 opens, allowing the brine in the salt dissolving tank 3 to enter the shearing machine 4 for shearing, so that the undissolved particles in the brine are re-ground. The sheared brine is then returned to the salt dissolving tank 3 by the conveying pump 3 for further stirring and dissolution, thereby improving the dissolution effect of the industrial salt residue in the salt dissolving tank 3.

[0059] The discharge port of the conveying pump 5 is connected to the first conveying pipe 21 and the second conveying pipe 22. The first conveying pipe 21 is connected to the discharge port of the conveying pump 5 and the return port of the salt tank 3. A second control valve 12 is installed on the first conveying pipe 21. When the brine in the salt tank 3 reaches the first liquid level, the second control valve 12 opens to allow the brine that has been sheared to flow back. The second conveying pipe 22 is connected to the discharge port of the conveying pump 5 and the downstream equipment located downstream of the industrial salt residue treatment equipment provided in this embodiment. A third control valve 13 is installed on the second conveying pipe 22. When the brine in the salt tank 3 reaches the second liquid level, the second control valve 12 reduces its opening and opens the third control valve 13 to allow the dissolved brine to flow into the downstream equipment.

[0060] To further ensure the dissolution effect of industrial salt residue in salt tank 3, an anti-accumulation baffle is installed on the inner wall of salt tank 3. The anti-accumulation baffle has serrated arc-shaped protrusions. In this way, during the stirring process of stirring device 310, the brine in salt tank 3 can reduce laminar flow and increase turbulence under the action of anti-accumulation baffle, so that the industrial salt residue can be fully dissolved in salt tank 3, improving the dissolution effect and dissolution efficiency.

[0061] To ensure the water supply to the components in the industrial salt slag treatment equipment provided in this embodiment, the industrial salt slag treatment equipment is connected to external production water, which is connected to the first water supply pipe 31, the second water supply pipe 32, the third water supply pipe 33, and the fourth water supply pipe 34.

[0062] The first water supply pipe 31 is connected to the inlet of the nozzle 801 in the venturi tube 8, and a fourth control valve 14 is provided on the first water supply pipe 31. During the operation of the venturi tube 8, the fourth control valve 14 is opened so that the production water enters the nozzle 801 and forms mist with the compressed air.

[0063] The second water supply pipe 32 is connected to the spray assembly 210 in the pre-dissolver 2, and a fifth control valve 15 is provided on the second water supply pipe 32. During the operation of the pre-dissolver 2, the fifth control valve 15 is opened, and the production water is sprayed out through the spray assembly 210 to achieve the pre-dissolution of industrial salt slag.

[0064] The third water supply pipe 33 is connected to the inlet of the demister 6, and a sixth control valve 16 is installed on the third water supply pipe 33. When the internal pressure difference of the demister 6 is large, the sixth control valve 16 is opened to flush the demister 6.

[0065] The fourth water supply pipe 34 is connected to the inlet of the salt dissolving tank 3. The inlet of the salt dissolving tank 3 is located at the upper end of the salt dissolving tank 3. The fourth water supply pipe 34 is equipped with a seventh control valve 17. After the industrial salt residue is pre-dissolved and enters the interior of the salt dissolving tank 3, the seventh control valve 17 is opened, allowing production water to enter the salt dissolving tank 3 to dissolve the industrial salt residue.

[0066] The fifth water supply pipe 35 is connected to the flushing port of the salt tank 3. The flushing port of the salt tank 3 is located at the bottom of the salt tank 3. The fifth water supply pipe 35 is equipped with a ninth control valve 19. After the salt tank 3 stops working, when there is material sediment at the bottom of the salt tank 3, the ninth control valve 19 is opened, so that production water can flow from the bottom of the salt tank 3 to flush the sediment and reduce the sediment.

[0067] When the industrial salt slag treatment equipment provided in this application embodiment is working, firstly, the induced draft fan 7 and the crusher 1 are turned on in sequence to form a closed circulation system to ensure the normal operation of each component. The cooled industrial salt slag enters the crusher 1 through the crusher inlet 104 for crushing. Under the action of the air classifier 10, it is crushed into small particles of industrial salt slag and dust, which enter the venturi tube 8 through the crusher outlet 105. This allows the dust to merge with the mist formed by the venturi tube 8. The resulting dust particles and industrial salt slag particles enter the pre-dissolver 2 and are pre-dissolved under the action of the spray assembly 210. The pre-dissolved industrial salt slag enters the salt dissolving tank 3 through the pre-dissolver outlet 203 and is dissolved and stirred by the stirring device 310. When the brine in the salt dissolving tank 3 reaches the first liquid level, the brine in the salt dissolving tank 3 is sheared by the shearer 4 and returned to the salt dissolving tank 3 by the conveying pump 5 for redissolution. When the brine in the salt dissolving tank 3 reaches the second liquid level, the brine in the salt dissolving tank 3 is conveyed to the downstream subsequent equipment by the conveying pump 5. This improves the dissolution rate and effect of industrial salt slag, thereby increasing the processing efficiency of industrial salt slag.

[0068] like Figure 3 As shown in the embodiments of this application, an industrial salt residue treatment method is also provided, including:

[0069] The industrial salt slag is crushed and then air-separated.

[0070] The industrial salt residue separated by air enters the pre-dissolver;

[0071] Water is sprayed onto the industrial salt residue entering the pre-dissolver to pre-dissolve it and form a pre-solution;

[0072] The pre-solution is introduced into the salt dissolving tank, and the pre-solution in the salt dissolving tank is stirred to form brine.

[0073] The industrial salt slag is crushed and then air-separated, with the air-separated industrial salt slag entering the pre-dissolving tank. The industrial salt slag treatment method further includes:

[0074] The industrial salt residue separated by air enters a venturi tube, and nozzles on the venturi tube spray water and compressed air onto the industrial salt residue.

[0075] The industrial salt residue passing through the Venturi tube enters the pre-dissolver.

[0076] When the liquid level in the salt dissolving tank is higher than the first liquid level, the brine discharged from the salt dissolving tank is sheared, and the sheared brine is returned to the salt dissolving tank.

[0077] When the liquid level in the salt dissolving tank is higher than the second liquid level, the brine discharged from the salt dissolving tank enters the subsequent downstream processes of industrial salt residue treatment.

[0078] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An industrial salt slag treatment device, characterized in that, include: Crusher (1), air classifier (10), pre-dissolver (2) and salt dissolving tank (3); The pulverizer (1) includes a pulverizer inlet (104) and a pulverizer outlet (105); the pre-dissolver (2) includes a pre-dissolver inlet (201), a pre-dissolver outlet (203) and a pre-dissolver outlet (202). The feed inlet (104) of the pulverizer is used to feed industrial salt residue, the discharge outlet (105) of the pulverizer is connected to the feed inlet (201) of the pre-dissolver, and the air classifier (10) is located inside the pulverizer (1). The outlet (203) of the pre-dissolver is connected to the inlet of the salt dissolving tank (3); The pre-dissolver (2) is provided with a spray assembly (210), which is located between the air outlet (202) and the feed inlet (201) of the pre-dissolver. The discharge port (105) of the crusher is connected to the feed port (201) of the pre-dissolver through a venturi tube (8). The venturi tube (8) is provided with a nozzle (801). The nozzle (801) is located in the throat of the venturi tube (8). The nozzle (801) includes an air inlet and a water inlet. The nozzle (801) is rotatably connected to the venturi tube (8); The bottom of the pre-dissolving device (2) is a conical section, the small end of the conical section is located in the salt dissolving tank (3), the pre-dissolving device outlet (203) is located at the small end of the conical section, and the pre-dissolving device outlet (203) is equipped with a flap valve, and the pre-dissolving device inlet (201) is higher than the conical section.

2. The industrial salt slag treatment equipment according to claim 1, characterized in that, It also includes a demister (6) and an induced draft fan (7), wherein the demister (6) includes a demister air inlet (601), a demister water inlet and a demister air outlet (602); the pulverizer (1) also includes a pulverizer air inlet (101); The demister inlet (601) is connected to the pre-dissolver outlet (202), the demister outlet (602) is connected to the induced draft fan (7) inlet, and the induced draft fan (7) outlet is connected to the pulverizer inlet (101).

3. The industrial salt slag treatment equipment according to claim 1, characterized in that, It also includes a shearing machine (4) and a delivery pump (5); The outlet of the salt dissolving tank (3) is connected to the inlet of the shearing machine (4), the outlet of the shearing machine (4) is connected to the inlet of the conveying pump (5), and the outlet of the conveying pump (5) is connected to the return port of the salt dissolving tank (3). A first control valve (11) is provided between the outlet of the salt tank (3) and the inlet of the shearing machine (4).

4. The industrial salt slag treatment equipment according to claim 3, characterized in that, The discharge port of the conveying pump (5) is connected to the first conveying pipe (21) and the second conveying pipe (22). The first conveying pipe (21) is connected to the outlet of the conveying pump (5) and the return port of the salt tank (3), and a second control valve (12) is provided on the first conveying pipe (21). The second conveying pipeline (22) connects the outlet of the conveying pump (5) and the downstream equipment, which is located downstream of the industrial salt slag treatment equipment. A third control valve (13) is installed on the second conveying pipeline (22).

5. The industrial salt slag treatment equipment according to claim 2, characterized in that, The industrial salt residue treatment equipment is connected to external production water, which is connected to the first water supply pipeline (31), the second water supply pipeline (32), the third water supply pipeline (33), the fourth water supply pipeline (34), and the fifth water supply pipeline (35). The first water supply pipe (31) is connected to the inlet of the nozzle (801), and a fourth control valve (14) is provided on the first water supply pipe (31). The second water supply pipe (32) is connected to the spray assembly (210), and a fifth control valve (15) is provided on the second water supply pipe (32); The third water supply pipe (33) is connected to the water inlet of the demister, and the third water supply pipe (33) is equipped with a sixth control valve (16). The fourth water supply pipe (34) is connected to the inlet of the salt tank (3), and the fourth water supply pipe (34) is equipped with a seventh control valve (17). The fifth water supply pipe (35) is connected to the flushing port of the salt tank (3), and the fifth water supply pipe (35) is equipped with a ninth control valve (19).

6. The industrial salt slag treatment equipment according to claim 1, characterized in that, The crusher (1) also includes a circulating cooling water inlet (102) and a circulating cooling water return outlet (103), which are connected to a circulating cooling water pipe located inside the crusher (1).

7. A method for treating industrial salt slag, characterized in that, The industrial salt slag treatment equipment described in 1-6 includes: The industrial salt slag is crushed and then air-separated. The industrial salt residue separated by air enters the pre-dissolver; Water is sprayed onto the industrial salt residue entering the pre-dissolver to pre-dissolve it and form a pre-solution; The pre-solution is introduced into the salt dissolving tank, and the pre-solution in the salt dissolving tank is stirred to form brine.

8. The method for treating industrial salt slag according to claim 7, characterized in that, The industrial salt slag is crushed and then air-separated, with the air-separated industrial salt slag entering the pre-dissolving tank. The industrial salt slag treatment method further includes: The industrial salt residue separated by air enters a venturi tube, and nozzles on the venturi tube spray water and compressed air onto the industrial salt residue. The industrial salt residue passing through the Venturi tube enters the pre-dissolver.

9. The method for treating industrial salt slag according to claim 7, characterized in that, When the liquid level in the salt dissolving tank is higher than the first liquid level, the brine discharged from the salt dissolving tank is sheared and mixed, and the brine after shearing and mixing is returned to the salt dissolving tank. When the liquid level in the salt dissolving tank is higher than the second liquid level, the brine discharged from the salt dissolving tank enters the downstream treatment process of industrial salt residue.

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