A device and process for particle size classification leaching and dechlorination

Abstract

The present application relates to coal processing technical field, propose a kind of particle size classification leaching reduce chlorine device and process, first frame rotation setting, its rotating shaft is horizontally arranged, first frame has at least one first containing groove, second frame rotation setting, and first frame coaxial, second frame has at least one second containing groove, second containing groove is located in the radial inboard of first containing groove;Filter ring, filter ring is located between first frame and second frame, with multiple filter holes, the diameter of filter hole is less than the particle size of large particle coal, and greater than the particle size of small particle coal;First containing groove is communicated with second containing groove by filter hole;First frame and second frame are located in leaching tank, leaching tank is used to place cleaning fluid or leaching solution;First containing groove has first through hole, and is communicated with leaching tank by first through hole.Solve the problem that cleaning water flow is difficult to uniformly act on the coal of mixed size particles in the prior art, leading to incomplete cleaning, further affecting the effect of reducing chlorine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal processing, in particular to a particle size grading leaching and chlorine reduction device and process. BACKGROUND

[0002] Coal is a widely used basic energy source worldwide, and its quality has a profound impact on energy utilization efficiency, industrial production stability, and environmental protection. During the process of coal mining, transportation, and storage, impurities inevitably mix with coal particles, and a certain amount of chlorine elements are also carried. The presence of chlorine makes it easy to cause equipment corrosion during coal processing such as combustion, gasification, and dry distillation, shortens the service life of the equipment, increases the operation and maintenance cost, and releases chlorine-containing pollutants, aggravating environmental pollution.

[0003] Currently, the coal cleaning and chlorine reduction process is mostly operated independently in steps, and the process is complicated. The common cleaning method focuses on removing the physical adhering impurities on the surface of the coal, but ignores the differences in cleaning and chlorine reduction requirements of different particle size coals. When mixing and processing large and small particle coals, the cleaning water flow is difficult to uniformly act on each particle, resulting in incomplete cleaning and further poor chlorine reduction effect. In addition, the step-by-step implementation of cleaning and chlorine reduction procedures not only occupies a large amount of space and equipment resources, but also consumes additional manpower and material resources, resulting in low overall production efficiency, which is difficult to meet the fast, efficient, and refined production requirements of modern coal industry. SUMMARY

[0004] The present application provides a particle size grading leaching and chlorine reduction device and process, which solves the problem that the cleaning water flow is difficult to uniformly act on the mixed coal of large and small particles in the related art, resulting in incomplete cleaning and further affecting the chlorine reduction effect.

[0005] The technical solution of the present application is as follows: a particle size grading leaching and chlorine reduction device, comprising:

[0006] A first frame body is rotationally arranged, and the rotation axis thereof is horizontally arranged. The first frame body has at least one first containing groove for containing large particle coals.

[0007] A second frame body is rotationally arranged, and the first frame body is coaxial with the second frame body. The second frame body has at least one second containing groove for containing small particle coals. The second containing groove is located on the radial inner side of the first containing groove.

[0008] A filter ring is located between the first frame body and the second frame body, and has a plurality of filter holes. The diameter of the filter hole is smaller than the particle size of the large particle coals and larger than the particle size of the small particle coals.

[0009] The first containing groove is in communication with the second containing groove through the filter hole.

[0010] a leaching tank, the first frame body and the second frame body being located in the leaching tank, the leaching tank being used for placing a cleaning liquid or a leaching liquid;

[0011] The first containing groove has a first through hole, and communicates with the leaching tank through the first through hole.

[0012] Optionally, the device further comprises:

[0013] an elastic top piece, the elastic top piece being arranged on the first frame body and having a cylindrical telescopic section, the cylindrical telescopic section being hemispherical at one end close to the filter ring and having the same diameter as the filter hole, and the cylindrical telescopic section being inserted into or removed from the filter hole after being moved.

[0014] Optionally, the second frame body further has a third containing groove and a through opening, the third containing groove being located at one side of the second containing groove, the third containing groove communicating with the second containing groove through the through opening, and the width of the through opening being greater than the particle size of the small particles.

[0015] Optionally, the bottom of the third containing groove is located radially outside the bottom of the second containing groove.

[0016] Optionally, the second frame body further has a blocking part, the blocking part being located at one side of the through opening close to the third containing groove; and the device further comprises:

[0017] a through plate, the through plate being swingably arranged on the second frame body, the through plate swinging towards the second containing groove to cancel the blocking of the through opening, or the through plate swinging towards the third containing groove to abut against the blocking part and block the through opening.

[0018] Optionally, the second containing groove has a second through hole, and the inside of the second containing groove communicates with the leaching tank through the second through hole;

[0019] The diameters of the first through hole and the second through hole are both smaller than the particle size of the small particles of coal.

[0020] Optionally, the circumferential length of the first containing groove is greater than the circumferential length of the second containing groove.

[0021] The first through hole is located on both sides of the second through hole in the circumferential direction.

[0022] The first through hole is arranged obliquely relative to the side wall of the first containing groove, and is obliquely arranged towards the bottom of the first containing groove.

[0023] Optionally, the device further comprises:

[0024] A blocking ring is semicircular and located on the radial outer side of the first frame body, and the blocking ring blocks or unblocks the first containing groove after the first frame body rotates.

[0025] Optionally, the first containing groove and the second containing groove are communicated after the first frame body or the second frame body rotates, or the first frame body blocks the second containing groove.

[0026] A particle size grading leaching and chlorine reduction process is performed on coal grading leaching by using any one of the particle size grading leaching and chlorine reduction devices.

[0027] The working principle and beneficial effects of the present application are as follows:

[0028] In the present application, the first containing groove is one or more and is arranged on the first frame body by welding, detachable connection or the like, or is processed and formed together with the first frame body, and the second frame body is the same as the second containing groove, and the first frame body and the second frame body are preferably annular, the diameter of the first frame body is greater than the diameter of the second frame body, so that the second frame body is located on the radial inner side of the first frame body, and the first frame body and the second frame body can be driven to rotate synchronously by a rotating shaft, or can be independent of each other, that is, have independent rotating driving devices. The filter ring is preferably also annular and is located between the first frame body and the second frame body and is separately supported and fixed by a support frame or the like.

[0029] In operation, coal mixed with different particle sizes is placed in the first containing groove, the first frame body and the second frame body are synchronously rotated, the coal rolls along the filter ring under the pushing of the side wall of the first containing groove, and in the rolling process, small particles enter the second containing groove through the filter holes, while large particle coal remains in the first containing groove. With rotation, the positions of the first containing groove and the second containing groove change from high to low, the coal is continuously tumbled and screened, and gradually enters the leaching groove. In order to prevent large particle coal from moving out of the first containing groove when rotating from top to bottom, a plate member can be arranged on the first containing groove for blocking, or a semicircular blocking ring can be arranged on the radial outer side of the first frame body, and the blocking ring blocks or unblocks the first containing groove after the first frame body rotates. Water is placed in the leaching groove, and a flotation agent is added to make the surface of the coal particles hydrophobic and adhere to bubbles to float to the water surface. When the first frame body and the second frame body rotate to the lower position and enter the water, the coal floats due to the action of the flotation agent and floats in the second containing groove and does not return to the first containing groove through the filter. After the first frame body and the second frame body are further rotated, the separated coal is moved out of the water, the water washing process is completed, and the above steps are repeated until the separation of coal with different particle sizes is achieved, and the water washing and separation two-in-one are achieved.

[0030] In the scheme, the effective separation of large and small coal particles is ensured by the design of filter holes, avoiding the problem of mixed processing of different size coal particles in traditional methods. Synchronous rotation and rolling make the coal naturally sieved during movement, improving the continuity and efficiency of sieving. The continuous tumbling of coal in the first and second holding tanks increases the contact area of coal and cleaning liquid, improving the cleaning effect. The use of flotation agent makes the surface of coal particles hydrophobic and attach bubbles to float to the water surface, not only enhancing the cleaning effect, but also preventing small coal particles from re-mixing into large coal particles. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above-mentioned features, technical characteristics, advantages and implementation modes of the present application will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0032] Figure 1 is a front view structural diagram of the present application;

[0033] Figure 2 is a cross-sectional view structural diagram of the present application (the first holding tank and the second holding tank are in communication);

[0034] Figure 3 is a cross-sectional view structural diagram of the present application (the first frame body blocks the second holding tank);

[0035] Figure 4 is Figure 3 is a partial enlarged view structural diagram of I;

[0036] Figure 5 is a second frame body structural diagram of the present application.

[0037] In the drawings: 1, first frame body; 101, first holding tank; 102, first through hole; 2, second frame body; 201, second holding tank; 202, second through hole; 203, third holding tank; 204, guide opening; 205, blocking part; 3, filter ring; 301, filter hole; 4, leaching tank; 5, elastic top piece; 501, cylindrical telescopic section; 6, guide plate; 7, blocking ring. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0039] In order to make the drawings simple, only the parts related to the application are shown in the drawings, and they do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0040] In this text, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0041] In addition, in the description of this application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] Embodiment 1

[0043] Reference Figures 1-2 , Figures 4-5 For the first embodiment of the application, a particle size grading leaching dechlorination device is provided, a first frame body 1 is rotatably arranged, and the rotating shaft is horizontally arranged. The first frame body 1 has at least one first containing groove 101 for containing large particle coal; the second frame body 2 is rotatably arranged, and the first frame body 1 is coaxial with the second frame body 2. The second frame body 2 has at least one second containing groove 201 for containing small particle coal, and the second containing groove 201 is located on the radial inner side of the first containing groove 101; the filter ring 3 is located between the first frame body 1 and the second frame body 2, and has a plurality of filter holes 301. The diameter of the filter hole 301 is smaller than the particle size of the large particle coal and larger than the particle size of the small particle coal; the first containing groove 101 is communicated with the second containing groove 201 through the filter hole 301; the first frame body 1 and the second frame body 2 are located in the leaching tank 4, and the leaching tank 4 is used to place the cleaning liquid or the leaching liquid; the first containing groove 101 has a first through hole 102, and is communicated with the leaching tank 4 through the first through hole 102.

[0044] In this embodiment, the first accommodating groove 101 is one or more, which can be arranged on the first frame body 1 by welding, detachable connection or other ways, or processed and formed together with the first frame body 1. The second frame body 2 is the same as the second accommodating groove 201. The first frame body 1 and the second frame body 2 are preferably annular. The diameter of the first frame body 1 is greater than that of the second frame body 2, so that the second frame body 2 is located on the radial inner side of the first frame body 1. The first frame body 1 and the second frame body 2 can be driven to rotate synchronously by a rotating shaft, or can be independent of each other, that is, there are independent rotating driving devices. The filter ring 3 is preferably also annular, which is located between the first frame body 1 and the second frame body 2 and is separately supported and fixed by a support frame.

[0045] In work, the coal mixed with different particle sizes is put into the first accommodating groove 101, and the first frame body 1 and the second frame body 2 rotate synchronously. The coal rolls along the filter ring 3 under the push of the side wall of the first accommodating groove 101. In the rolling process, small particles enter the second accommodating groove 201 through the filter hole 301, while large particle coal remains in the first accommodating groove 101. With rotation, the positions of the first accommodating groove 101 and the second accommodating groove 201 change from high to low, and the coal continuously tumbles and is screened, gradually entering the leaching tank 4. In order to prevent large particles of coal from moving out of the first accommodating groove 101 when rotating from top to bottom, a plate can be arranged on the first accommodating groove 101 to block it, or a semicircular blocking ring can be arranged on the radial outer side of the first frame body 1. After the first frame body 1 rotates, the blocking ring blocks or unblocks the first accommodating groove 101. Water is placed in the leaching tank 4, and a flotation agent is added to make the surface of the coal particles hydrophobic and attach bubbles to float to the water surface. When the first frame body 1 and the second frame body 2 rotate to the lower part and enter the water, the coal floats due to the action of the flotation agent and floats in the second accommodating groove 201, and will not return to the first accommodating groove 101 through the filter hole 301. After further rotation of the first frame body 1 and the second frame body 2, the separated coal is moved out of the water, completing the water washing process. Repeat the above steps until the separation of different particle sizes is achieved, and the water washing and separation are combined.

[0046] In this scheme, the design of the filter hole 301 ensures the effective separation of large and small particles of coal, avoiding the problem of mixing different particle sizes of coal in traditional methods. Synchronous rotation and rolling make the coal naturally screened during movement, improving the continuity and efficiency of screening. The continuous tumbling of coal in the first accommodating groove 101 and the second accommodating groove 201 increases the contact area between the coal and the cleaning liquid, improving the cleaning effect. The use of a flotation agent to make the surface of the coal particles hydrophobic and attach bubbles to float to the water surface not only enhances the cleaning effect, but also prevents small particles of coal from re-mixing with large particles of coal.

[0047] Further, the elastic top piece 5 is arranged on the first frame body 1 and has a cylindrical telescopic section 501, which is hemispherical at one end close to the filter ring 3 and has the same diameter as the filter hole 301. The cylindrical telescopic section 501 is inserted into or removed from the filter hole 301 after moving.

[0048] In the embodiment, during the screening of coal with different particle sizes, large particles of coal cannot enter the filter hole 301, but a plurality of small particles are prone to be accumulated in the filter hole 301 and block the filter hole 301. Therefore, the elastic top piece 5 is designed, which includes the cylindrical telescopic section 501 and an elastic piece, which can be a spring, for providing an elastic force to push the cylindrical telescopic section 501 to move towards the filter hole 301. The elastic top piece 5 moves with the first frame body 1 and is hemispherical at one end. When the first frame body 1 and the filter ring 3 move relatively, the filter ring 3 pushes the hemispherical end of the elastic top piece 5 to push it back into the first frame body 1. When the elastic top piece 5 moves above the filter hole 301, the cylindrical telescopic section 501 extends and is inserted into the filter hole 301 under the elastic action, and pushes the small particles accumulated in the filter hole 301 into the third containing groove 203. With the continuous rotation of the first frame body 1 and the second frame body 2, the elastic top piece 5 can periodically clean the filter hole 301, ensuring the continuity and efficiency of the screening process.

[0049] Further, the second frame body 2 also has the third containing groove 203 and the through opening 204. The third containing groove 203 is located at one side of the second containing groove 201 and communicates with the second containing groove 201 through the through opening 204. The groove bottom of the third containing groove 203 is located at the radial outer side of the groove bottom of the second containing groove 201. The second frame body 2 also has the blocking part 205, which is located at one side of the through opening 204 close to the third containing groove 203. The through plate 6 is swingably arranged on the second frame body 2. The through plate 6 swings towards the second containing groove 201 to cancel the shielding of the through opening 204, or the through plate 6 swings towards the third containing groove 203 to abut against the blocking part 205 and shield the through opening 204.

[0050] In the embodiment, after the small particles blocked in the filter hole 301 are pushed into the third containing groove 203, with the rolling of the first frame body 1 and the second frame body 2, when the through plate 6 swings towards the second containing groove 201, the shielding of the through opening 204 is cancelled, allowing the small particles to re-enter the second containing groove 201 through the through opening 204. When the through plate 6 swings towards the third containing groove 203 and abuts against the blocking part 205, the through plate 6 shields the through opening 204 to prevent the small particles from returning from the second containing groove 201 to the third containing groove 203.

[0051] The guide plate 6 is used to swing under the action of gravity, similar to a one-way valve, to allow only small particles in the third containing groove 203 to pass into the second containing groove 201, to realize the collection and integration of small particles, and to be limited by the blocking part 205 and not to swing into the third containing groove 203. Thus, the shielding effect of small particles in the second containing groove 201 is formed. Not only the problem of filter hole 301 blockage caused by the accumulation of small particles in the filter hole 301 is solved, but also the screening and cleaning process of coal is further optimized.

[0052] Further, the second containing groove 201 has a second through hole 202, which is in communication with the leaching groove 4 through the second through hole 202 inside; the hole diameter of the first through hole 102 and the hole diameter of the second through hole 202 are both smaller than the particle size of small particle coal. The circumferential length of the first containing groove 101 is greater than the circumferential length of the second containing groove 201; the first through hole 102 is located on both sides of the second through hole 202 in the circumferential direction; the first through hole 102 is arranged obliquely relative to the side wall of the first containing groove 101, and the oblique direction is towards the groove bottom of the first containing groove 101.

[0053] In this embodiment, the first through hole 102 is located on both sides of the second through hole 202 in the circumferential direction, which makes the water enter the first containing groove 101 through the first through hole 102 when the first frame body 1 rotates. With the diffusion of water in the first containing groove 101, the coal is preliminarily washed, and the large particle coal (possibly not fully separated, with some small particles) in the first containing groove 101 and the small particles in the second containing groove 201 are sequentially floated, so that the small particles always float close to the position of the groove bottom of the second containing groove 201 during the water washing process, and the small particles in the first containing groove 101 also partially enter the second containing groove 201 through the filter hole 301 during the floating process, further realizing the separation. If water is first poured into the second containing groove 201, it is likely that the small particles will be washed into the first containing groove 101 through the filter hole 301, affecting the separation result. After the first frame body 1 and the second frame body 2 are further rotated, the water flows out through the second through hole 202, realizing a cycle of separation and water washing.

[0054] The design optimizes the structure of the first containing groove 101 and the second containing groove 201 and the arrangement of the through holes thereof, ensures that the water enters the first containing groove 101 first, and avoids the problem that the water directly enters the second containing groove 201 and may cause the small particles to flow back to the first containing groove 101 through the filter hole 301. It has significant advantages in improving separation accuracy, enhancing cleaning effect, and improving system stability.

[0055] Embodiment 2

[0056] Reference Figure 3Compared with the embodiment 1, the embodiment is different in that the first frame 1 shields the second accommodating groove 201 after the first frame 1 or the second frame 2 rotates.

[0057] In the embodiment, the first frame 1 and the second frame 2 are respectively driven individually, so that the first frame 1 shields the second accommodating groove 201, at this time, the second accommodating groove 201 is a relatively closed space, only communicated with the outside through the second through hole 202, used for coal separation of different particle sizes, and chlorine reduction operation after water washing is completed. The first frame 1 shields the second accommodating groove 201, and the first frame 1 and the second frame 2 rotate synchronously. Because the first accommodating groove 101 is relatively large in diameter, the path of the large particle coal is longer, and they are subjected to more tumbling and stirring in the leaching liquid, increasing the contact effect with the leaching liquid. This helps to more fully dissolve and remove the chlorides and other impurities on the surface and inside of the large particle coal. Further, the rotational angular velocity of the second frame 2 can be further accelerated, the leaching time of the small particles is shortened, unnecessary long time soaking is avoided, and resource waste and potential impact on the physical properties of the coal are reduced.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A particle size classification dechlorination device, characterized by, The utility model relates to a kind of coal cleaning device, including: First frame body (1), the first frame body (1) is rotationally arranged, and its rotation axis is horizontally arranged, and the first frame body (1) has at least one first containing groove (101) for containing large particle coal; Second frame body (2), the second frame body (2) is rotationally arranged, and the first frame body (1) is coaxial, and the second frame body (2) has at least one second containing groove (201) for containing small particle coal, and the second containing groove (201) is located in the radial inner side of the first containing groove (101); Filter ring (3), the filter ring (3) is located between the first frame body (1) and the second frame body (2), and has a plurality of filter holes (301), the diameter of the filter hole (301) is less than the particle size of the large particle coal, and greater than the particle size of the small particle coal; The first containing groove (101) is communicated with the second containing groove (201) by the filter hole (301); Leaching tank (4), the first frame body (1) and the second frame body (2) are located in the leaching tank (4), and the leaching tank (4) is used for placing cleaning liquid or leaching liquid; The first containing groove (101) has first through hole (102), and is communicated with the leaching tank (4) by the first through hole (102).

2. A device for dechlorination by size fractionated leaching according to claim 1, characterized in that, Further including: Elastic top piece (5), the elastic top piece (5) is arranged on the first frame body (1), and has cylindrical telescopic section (501), the one end of the cylindrical telescopic section (501) is hemispherical close to the filter ring (3), and its diameter is same with the diameter of the filter hole (301), and the cylindrical telescopic section (501) is inserted or cancelled after moving in the filter hole (301).

3. A particle size classification dechlorination device according to claim 2, wherein The second frame body (2) further has third containing groove (203) and guide opening (204), the third containing groove (203) is located on one side of the second containing groove (201), the third containing groove (203) is communicated with the second containing groove (201) by the guide opening (204), and the width of the guide opening (204) is greater than the particle size of the small particle coal.

4. A particle size classification dechlorination device according to claim 3, wherein The third containing groove (203) groove bottom is located in the radial outer side of the second containing groove (201) groove bottom.

5. A particle size classification dechlorination apparatus according to claim 4, wherein The second frame body (2) further has stop portion (205), and the stop portion (205) is located on the side of the guide opening (204) close to the third containing groove (203);Further including: Guide plate (6), the guide plate (6) is swing arranged on the second frame body (2), after the guide plate (6) swings to the second containing groove (201), the guide opening (204) is cancelled to be shielded, or after the guide plate (6) swings to the third containing groove (203), the guide plate (6) is abutted with the stop portion (205), and the guide opening (204) is shielded.

6. A particle size classification dechlorination device according to claim 1, wherein The second containing groove (201) has second through hole (202), and the inside is communicated with the leaching tank (4) by the second through hole (202); The aperture of the first through hole (102) and the aperture of the second through hole (202) are all less than the particle size of the small particle coal.

7. A particle size classification dechlorination apparatus according to claim 6, wherein The circumferential length of the first accommodating groove (101) is greater than the circumferential length of the second accommodating groove (201); The first through hole (102) is located on both sides of the second through hole (202) in the circumferential direction; The first through hole (102) is arranged obliquely relative to the side wall of the first accommodating groove (101), and the oblique direction is towards the groove bottom of the first accommodating groove (101).

8. A particle size classification dechlorination device according to claim 5 or 7, characterised in that, Further comprising: A blocking ring (7) is semicircular and located radially outside the first frame body (1). After the first frame body (1) rotates, the blocking ring (7) blocks or unblocks the first accommodating groove (101).

9. A particle size classification dechlorination device according to claim 3, wherein After the first frame body (1) or the second frame body (2) rotates, the first accommodating groove (101) communicates with the second accommodating groove (201) through the filter hole (301), or the first frame body (1) blocks the second accommodating groove (201).

10. A process for the dechlorination of leach liquors by particle size fractionation, characterised in that, A coal graded leaching device is used to perform coal graded leaching.

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