Desulfurized carbide slag pulping and deslagging device

Abstract

The utility model relates to the technical field of carbide slag desulfurization, in particular to a desulfurized carbide slag slurrying and deslagging device which comprises a slurrying pool, a slurrying pool pump, a cyclone, a carbide slag finished product box and a linear vibrating screen, the cyclone comprises a feed port, an overflow port and a sand setting port, the slurrying pool is connected with the feed port of the cyclone, a slurrying pool pump is arranged between the cyclone and the slurrying pool, the overflow port is connected with a carbide slag finished product box, and the sand setting port is connected with a linear vibrating screen. Slurry in the slurrying pool is separated through the cyclone and the linear vibrating screen, separated carbide slag enters the carbide slag finished product box through the overflow port, the part containing impurities enters the linear vibrating screen through the sand settling port, the carbide slag returns to the slurrying pool after the impurities are screened out, and then the cyclone is used for separation and circulation treatment. The deslagging efficiency is high and the effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of carbide slag desulfurization, in particular to a desulfurized carbide slag pulping and slag removal device. Background Art

[0002] Wet carbide slag is a waste residue after carbide is hydrolyzed to obtain acetylene gas. However, its comprehensive utilization is not much at present. It is mainly piled up or landfilled, which occupies a large amount of land and has great pollution to the environment. The main component of carbide slag is calcium hydroxide, which is an absorbent for dry flue gas desulfurization. Therefore, wet carbide slag is used to prepare dry flue gas desulfurization absorbent, which not only realizes waste treatment with waste, but also has low cost, which can greatly reduce the operating cost of dry flue gas desulfurization equipment.

[0003] In the current carbide slag desulfurization technology in the industry, rotary vibrating screen is generally used as the main equipment for removing impurities in the carbide slag system. However, the rotary vibrating screen frequently malfunctions during use, including cracking of the reducer case caused by impurity blockage, broken reducer main shaft, broken reducer fixing bolts, torn winding connections, different amplitudes of the rotary vibrating screen, loose sealing on the top of the rotary vibrating screen, low slag removal efficiency and poor effect, which has caused great obstacles to the continuous and stable operation of carbide slag desulfurization.

[0004] Therefore, there is an urgent need for a deslagging device for pulping and removing slag from desulfurized carbide slag with high slagging efficiency and good screening effect. Utility Model Content

[0005] In order to overcome the problems existing in the prior art, the utility model aims to provide a desulfurized carbide slag pulping and slag removal device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a desulfurized carbide slag pulping and slag removal device, comprising a pulping tank, a pulping tank pump, a cyclone, a carbide slag finished product box and a linear vibrating screen; the cyclone comprises an inlet, an overflow port and a sand settling port, the pulping tank is connected to the inlet of the cyclone, a pulping tank pump is arranged between the cyclone and the pulping tank, the overflow port is connected to the carbide slag finished product box, and the sand settling port is connected to the linear vibrating screen.

[0007] The utility model is further configured as follows: a stirring device is arranged in the pulping tank, and the stirring device can effectively prevent the particle sedimentation of the slurry in the pulping tank under the action of mechanical stirring.

[0008] The utility model is further configured as follows: the desulfurized carbide slag pulping and slag removal device also includes a digester, a first pipeline is arranged on the digester, one end of the first pipeline is connected to the inside of the digester from the side wall of the digester, and the other end of the first pipeline is connected to the pulping tank, and a first valve is arranged on the first pipeline.

[0009] The utility model is further configured as follows: a second pipeline is also arranged on the digestion tank, one end of the second pipeline is connected to the bottom of the digestion tank, the other end of the second pipeline is connected to the pulping tank, and a second valve is arranged on the second pipeline.

[0010] The utility model is further configured as follows: a net box is further arranged above the pulping tank, and the net box is arranged between the second pipeline and the pulping tank.

[0011] The utility model is further configured as follows: the diameter of the mesh hole of the net box is 4-6 mm.

[0012] Most of the impurities in the digester are deposited at the bottom of the digester, so two pipelines leading to the pulping tank are set on the digester; one end of the first pipeline is connected to the side wall of the upper part of the digester. There are fewer impurities and no precipitation in the upper part of the digester, so the first pipeline directly leads to the pulping tank. The second pipeline is located at the bottom of the digester. Since large particles of impurities will be deposited at the bottom of the digester, a mesh box is set at the outlet of the second pipeline connected to the pulping tank. Large particles of impurities are intercepted in the mesh box, and slurry and fine solid particles enter the pulping tank; the slurry in the digester can be efficiently transported to improve the efficiency of slag removal.

[0013] The utility model is further configured as follows: the linear vibrating screen comprises a screen plate and an under-screen outlet, the under-screen outlet is located below the screen plate, and the under-screen outlet is connected to the pulping tank.

[0014] The utility model is further configured as follows: the linear vibrating screen also includes an outlet on the screen, the outlet on the screen is located at one end of the screen plate, and the outlet on the screen is used to remove impurities.

[0015] The utility model is further configured as follows: the cyclone adopts a spiral feed cyclone.

[0016] The utility model is further configured as follows: the pulping tank pump, the linear vibrating screen, the first valve, the second valve, and the stirring device are electrically connected to the external control device respectively.

[0017] In summary, the beneficial effects of the above technical solution of the utility model are as follows:

[0018] 1. The utility model separates the slurry in the pulping tank by arranging a cyclone and a linear vibrating screen. The separated calcium carbide slag enters the calcium carbide slag finished product box from the overflow port, and the part containing impurities enters the linear vibrating screen from the sand settling port. After the impurities are screened out, it returns to the pulping tank and is then separated and circulated by the cyclone. The slag removal efficiency is high and the effect is good.

[0019] 2. The utility model efficiently transports the slurry in the digester and improves the efficiency of slag removal. A mesh box is set at the outlet of the second pipeline at the bottom of the digester, which can intercept large particle impurities in the mesh box. The slurry and fine particle solids enter the pulping tank and preliminarily screen out large particle impurities to avoid blockage or failure of subsequent equipment due to large particle impurities; at the same time, the first pipeline can directly transport the slurry without precipitation above the digester to the pulping tank without mesh box filtration, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Digestion tank, 11. First pipeline, 12. Second pipeline, 2. Cyclone, 21. Feed inlet, 22. Overflow outlet, 23. Sand settling outlet, 3. Carbide slag finished product box, 4. Slurry tank pump, 5. Slurry tank, 6. Net box, 7. Linear vibrating screen, 71. Screen outlet, 72. Screen outlet. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is a clear and complete description of the technical solution of the present invention in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the creation of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0027] Example:

[0028] like Figure 1 As shown, a preferred embodiment of the utility model is a desulfurized carbide slag pulping and slag removal device, including a pulping tank 5, a pulping tank pump 4, a cyclone 2, a carbide slag finished product box 3 and a linear vibrating screen 7; the cyclone 2 adopts a spiral feeding cyclone, and the cyclone 2 includes an inlet 21, an overflow port 22 and a sand settling port 23. The pulping tank 5 is connected to the inlet 21 of the cyclone 2, and a pulping tank pump 4 is arranged between the cyclone 2 and the pulping tank 5. The overflow port 22 is connected to the carbide slag finished product box 3, and the sand settling port 23 is connected to the linear vibrating screen 7.

[0029] The linear vibrating screen 7 includes an under-screen outlet 72 and an over-screen outlet 71, wherein the under-screen outlet 72 is connected to the pulping tank 5. The over-screen outlet 71 is used to remove impurities. The slurry after removing impurities returns to the pulping tank 5 from the under-screen outlet 72 and is separated again by the cyclone 2. In this embodiment, the linear vibrating screen 7 adopts a ZKJ1127 high-frequency vibrating screen.

[0030] The pulping tank 5 is provided with a stirring device, which can effectively prevent the particles from settling in the pulping tank 5 under the action of mechanical stirring.

[0031] The desulfurized carbide slag pulping and slag removal device also includes a digester 1, on which a first pipeline 11 is provided. One end of the first pipeline 11 is connected to the inside of the digester 1 from the side wall of the digester 1, and the other end of the first pipeline 11 is connected to the pulping tank 5. A first valve is provided on the first pipeline 11.

[0032] The digester 1 is also provided with a second pipeline 12 , one end of which is connected to the bottom of the digester 1 , and the other end of which is connected to the pulping tank 5 . A second valve is provided on the second pipeline 12 .

[0033] A mesh box 6 is further arranged above the pulping tank 5. The mesh box 6 is arranged at the outlet of the second pipeline 12. In this embodiment, the mesh diameter of the mesh box 6 is 5 mm.

[0034] Most of the impurities in the digester 1 are deposited at the bottom of the digester 1, so two pipelines leading to the pulping tank 5 are set on the digester 1; one end of the first pipeline 11 is connected to the upper part of the digester, and there are fewer impurities and no precipitation in the slurry in the upper part, so the first pipeline 11 directly leads to the pulping tank 5.

[0035] The second pipeline 12 is located at the bottom of the digester 1. Since large particles of impurities will be deposited at the bottom of the digester 1, a mesh box 6 is provided at the outlet of the second pipeline 12 connected to the pulping tank 5. The large particles of impurities are intercepted in the mesh box 6, and the slurry and fine particle solids enter the pulping tank 5. The two pipelines can cooperate to efficiently transport the slurry in the digester 1 and improve the slag removal efficiency.

[0036] The pulping tank pump 4, the linear vibrating screen 7, the first valve, the second valve and the stirring device are electrically connected to the external control device respectively.

[0037] In actual application, the slurry at the upper part of the digester 1 is discharged into the pulping tank 5 through the first pipeline 11, and the bottom of the digester 1 is discharged into the mesh box 6 on the pulping tank 5 through the second pipeline 12. The mesh size of the mesh box 6 is about 5 mm, and the large particle impurities are initially intercepted in the mesh box 6, and the slurry and fine particle solids enter the pulping tank 5. The pulping tank 5 can effectively prevent the particles from settling under the mechanical stirring action of the stirring device. The slurry in the pulping tank 5 is sent to the cyclone 2 through the pulping tank pump 4. The part overflowing from the overflow port 22 of the cyclone 2 is fed into the calcium carbide slag finished product box 3 as a finished product, and the part containing impurities enters the linear vibrating screen 7 through the sand settling port 23 for dehydration. The slurry after the impurities are screened out returns to the pulping tank 5 through the under-screen outlet 72, and then is separated and circulated by the cyclone 2, and the impurities are discharged from the over-screen outlet 71.

[0038] Finally, it should be noted that the above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A desulfurized carbide slag pulping and slag removal device, characterized in that: It includes a pulping tank, a pulping tank pump, a cyclone, a carbide slag finished product box and a linear vibrating screen; the cyclone includes an inlet, an overflow port and a sand settling port, the pulping tank is connected to the inlet of the cyclone, a pulping tank pump is arranged between the cyclone and the pulping tank, the overflow port is connected to the carbide slag finished product box, and the sand settling port is connected to the linear vibrating screen.

2. A desulfurized carbide slag pulping and slag removal device according to claim 1, characterized in that: The desulfurized carbide slag pulping and slag removal device also includes a digester, which is provided with a first pipeline. One end of the first pipeline is connected to the inside of the digester from the side wall of the digester, and the other end of the first pipeline is connected to the pulping tank. A first valve is provided on the first pipeline.

3. A desulfurized carbide slag pulping and slag removal device according to claim 2, characterized in that: The digester is also provided with a second pipeline, one end of which is connected to the bottom of the digester, and the other end of which is connected to the pulping tank. A second valve is provided on the second pipeline.

4. A desulfurized carbide slag pulping and slag removal device according to claim 3, characterized in that: A net box is also arranged above the pulping tank, and the net box is arranged between the second pipeline and the pulping tank.

5. A desulfurized carbide slag pulping and slag removal device according to claim 4, characterized in that: A stirring device is arranged in the pulping tank.

6. A desulfurized carbide slag pulping and slag removal device according to claim 4, characterized in that: The mesh diameter of the net box is 4-6 mm.

7. A desulfurized carbide slag pulping and slag removal device according to claim 1, characterized in that: The linear vibrating screen comprises a screen plate and an under-screen outlet, wherein the under-screen outlet is arranged below the screen plate and connected to the pulping tank.

8. A desulfurized carbide slag pulping and slag removal device according to claim 7, characterized in that: The linear vibrating screen also includes an upper screen outlet, which is arranged at one end of the screen plate and is used to remove impurities.

9. A desulfurized carbide slag pulping and slag removal device according to claim 1, characterized in that: The cyclone adopts a spiral feed cyclone.

10. A desulfurized carbide slag pulping and slag removal device according to claim 5, characterized in that: The pulping tank pump, the linear vibrating screen, the first valve, the second valve and the stirring device are electrically connected to the external control device respectively.

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