A dry solidification desulfurizer, preparation device and preparation method

Abstract

The present invention discloses a dry-curing desulfurizer, which belongs to the technical field of desulfurization and denitrification additive processing. The dry-curing desulfurizer is prepared from the following raw materials in parts by weight: 40 to 80 parts of soap mud, 30 to 50 parts of carbide slag, 50 to 70 parts of urea, 10 to 20 parts of sodium bicarbonate, and 25 to 40 parts of magnesium carbonate. The present invention also discloses a preparation device and method for preparing the above-mentioned desulfurizer, comprising a workbench, a mixing mechanism, a rotating power mechanism, a guide mechanism, and a discharge docking mechanism. In the preparation device, the entire frame and the mixing barrel are arranged into a translatable structure to facilitate switching between a mixing station and a discharge station as needed; the provided guide mechanism can guide the discharge mechanism to smoothly enter the discharge docking mechanism and achieve docking between the two during the translation process, thereby eliminating the trouble of manual docking and improving efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of desulfurization and denitration additive processing, in particular to a dry-curing desulfurizer and a preparation method thereof. Background Art

[0002] In the process of cement production, raw materials need to be calcined into clinker using coal in a rotary kiln. During the combustion of coal, a large amount of NO is generated. X and SO2 flue gas pollute the environment. In order to reduce NO X The existing practice is to add sulfur-fixing agents to the flue gas of coal combustion. However, the existing sulfur-fixing agents can only fix the sulfur element in coal and raw materials, but cannot fix the nitrogen element. This results in the existing sulfur-fixing agents having a poor denitrification effect on coal and cannot reduce NO X In addition, the desulfurization effect of existing desulfurizers is also unsatisfactory and cannot meet the existing emission standards. The components of desulfurizers need to be further improved.

[0003] Soap mud and carbide slag are both industrial waste or by-products. How to apply the two to desulfurization agents to improve the desulfurization effect is an urgent problem to be solved. Applying soap mud and carbide slag to desulfurization agents can not only solve the problem of industrial waste treatment, but also greatly reduce the production cost of desulfurization agents.

[0004] In addition, in the prior art, the preparation of desulfurizers mostly uses a mixing device to mix multiple components. After the mixing is completed, manual operation is required to connect the discharge port to transfer the material, and the discharge port is manually closed again after the transfer. During this process, the discharge port needs to be kept in a stable vertical downward position, which is very inconvenient and restricts production efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to solve the shortcomings of existing sulfur-fixing agents in preparation process and desulfurization and denitrification effects.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A preparation device for a dry-curing desulfurizer comprises a workbench, a mixing mechanism, a rotating power mechanism, a guiding mechanism and a discharge docking mechanism. The mixing mechanism is mounted on the workbench with the aid of a frame and is connected to the rotating power mechanism. The rotating power mechanism is mounted on the frame and is used to drive the mixing mechanism to rotate. The frame is slidably connected to the workbench and can achieve horizontal movement of the frame with the aid of a translation mechanism. The guiding mechanism is mounted on the discharge docking mechanism and is used to guide the discharge mechanism on the mixing mechanism to the discharge docking mechanism when the mixing mechanism is translated. The docking module in the discharge docking mechanism can dock with the discharge mechanism during the translation of the discharge mechanism.

[0008] Preferably, the mixing mechanism includes a mixing barrel, an end cover, a feed port and a discharge mechanism. The end cover is installed at both ends of the mixing barrel. The outer end of the end cover is connected to a drive shaft, and the drive shaft is rotatably connected to the frame by means of a bearing. The feed port and the discharge mechanism are both installed on the outer periphery of the mixing barrel.

[0009] Preferably, the discharge mechanism includes a discharge pipe, an electric ball valve and a butt joint, the discharge pipe is fixed to the outer periphery of the mixing barrel, and the discharge pipe, the electric ball valve and the butt joint are connected in sequence.

[0010] Preferably, the rotating power mechanism includes a driving motor, a main pulley and a secondary pulley, the driving motor is mounted on the frame and its output end is connected to the main pulley, the main pulley is connected to the secondary pulley by means of a conveyor belt, and the secondary pulley is connected to one of the drive shafts.

[0011] Preferably, the guide mechanism includes two symmetrically arranged guide plates, one end of the guide plate is provided with an extension plate perpendicular to the guide plate, and the connection between the extension plate and the guide plate adopts a rounded transition.

[0012] Preferably, the discharge docking mechanism includes a slide and a docking module, the docking module is slidably connected to a guide surface set in the slide, sliding columns are provided on the front and rear sides of the docking module, and the side of the slide is provided with a guide hole matching the sliding column.

[0013] Preferably, the docking module includes a guide block, a guard plate, a docking part and a connecting pipe. The guide block is slidably connected to the guide surface one by means of the guide surface two provided thereon. The guard plate is fixed to the upper end of the guide block. The upper end of the guide block is also provided with a docking part that can cooperate with the docking pipe. A discharge channel is provided in the guide block and is connected to the docking part. The lower end of the discharge channel is connected to the connecting pipe.

[0014] Preferably, the translation mechanism includes a telescopic oil cylinder and a cylinder seat, the telescopic oil cylinder is installed on the workbench by means of the cylinder seat, and the output end of the telescopic oil cylinder is connected to the frame.

[0015] The present invention also discloses a method for preparing a dry-curing desulfurizer using the preparation device, which is characterized in that the specific preparation steps are as follows:

[0016] S1. Soap mud, sodium hydroxide and carbide slag were mixed in a weight ratio of 3:1:2 and allowed to stand for 2h, dried and ground into a powder to obtain a mixed powder A;

[0017] S2. The mixed powder A obtained in step S1 was weighed with urea, sodium bicarbonate, and magnesium carbonate and then fully mixed into the preparation apparatus to obtain a mixed powder B;

[0018] S3. The mixed powder B is transferred to the pulverizer through the discharge docking mechanism in the preparation device, where it is ground and pulverized. The qualified fine powder is sieved out by the air classifier and enters the cyclone collector. The cyclone collector collects the material and discharges it through the discharge valve. The material is collected and sent to the finished product warehouse for shipment. The dust collector filters and collects the dust, and the clean air is discharged from the fan.

[0019] The present invention also discloses a dry-curing desulfurizer, which is obtained by the method and is specifically prepared from the following raw materials in parts by weight: 50 to 80 parts of soap mud, 30 to 50 parts of carbide slag, 50 to 70 parts of urea, 10 to 20 parts of sodium bicarbonate, and 25 to 40 parts of magnesium carbonate.

[0020] Beneficial effects obtained by the present invention:

[0021] 1. In the present invention, the entire frame and the mixing barrel are arranged into a translationally movable structure so as to facilitate switching between the mixing station and the discharging station as required.

[0022] 2. The guide mechanism provided in the present invention can guide the discharge mechanism to smoothly enter the discharge docking mechanism and achieve docking between the two during the translation process, thereby eliminating the trouble of manual docking and improving efficiency.

[0023] 3. The present invention uses a variety of industrial by-products and waste materials to interact with each other to achieve sulfur fixation and reduce NO X Emissions, while achieving comprehensive resource utilization, the powdered sulfur fixer is non-toxic and has no safety hazards during production, storage, transportation and use. When added to coal, it also has the advantages of partially reducing coal consumption, reducing carbon dioxide emissions and reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the preparation device in the present invention.

[0025] Figure 2 for Figure 1 main view.

[0026] Figure 3 It is a structural diagram of the material arrangement and docking mechanism.

[0027] Figure 4 for Figure 3 Top view of .

[0028] Figure 5 for Figure 4 Cross-sectional view along the AA direction.

[0029] Among them, 1 workbench, 10 slide rail, 2 mixing mechanism, 20 mixing barrel, 21 end cover, 22 feed port, 23 discharge mechanism, 230 discharge pipe, 231 electric ball valve, 232 docking pipe, 24 drive shaft, 3 rotation power mechanism, 30 drive motor, 31 main pulley, 32 secondary pulley, 33 conveyor belt, 4 guide mechanism, 40 guide plate, 41 extension plate, 5 discharge docking mechanism, 50 slide, 500 guide surface one, 501 guide hole, 51 docking module, 510 guide block, 511 guard plate, 512 docking part, 513 connecting pipe, 514 slide column, 515 discharge channel, 516 guide surface two, 7 translation mechanism, 70 telescopic cylinder, 71 cylinder seat, 8 frame. DETAILED DESCRIPTION

[0030] The specific implementation methods of the present invention are further explained in detail below through the description of embodiments, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0031] A preparation device for a dry solidification desulfurizer, comprising a workbench 1, a mixing mechanism 2, a rotating power mechanism 3, a guide mechanism 4, and a discharge docking mechanism 5;

[0032] The mixing mechanism 2 is mounted on the workbench 1 with the aid of a frame 8 and is connected to the rotating power mechanism 3. The mixing mechanism 2 includes a mixing barrel 20, an end cover 21, a feed port 22, and a discharge mechanism 23. The end cover 21 is mounted at both ends of the mixing barrel 20. The outer end of the end cover 21 is connected to a drive shaft 24. The drive shaft 24 is rotatably connected to the frame 8 with the aid of a bearing. The feed port 22 and the discharge mechanism 23 are both mounted on the outer periphery of the mixing barrel 20.

[0033] The discharge mechanism 23 includes a discharge pipe 230 , an electric ball valve 231 and a docking pipe 232 . The discharge pipe 230 is fixed to the outer periphery of the mixing barrel 20 . The discharge pipe 230 , the electric ball valve 231 and the docking pipe 232 are connected in sequence.

[0034] The rotating power mechanism 3 is mounted on the frame 8 and is used to drive the mixing mechanism 2 to rotate. The rotating power mechanism 3 includes a driving motor 30, a main pulley 31 and a secondary pulley 32. The driving motor 30 is mounted on the frame 8 and its output end is connected to the main pulley 31. The main pulley 31 is connected to the secondary pulley 32 by means of a conveyor belt 33. The secondary pulley 32 is connected to one of the drive shafts 24.

[0035] The frame 8 is slidably connected to the workbench 1 (such as with the help of a slide rail 10) and can achieve horizontal movement of the frame 8 with the help of a translation mechanism 7. The translation mechanism 7 includes a telescopic cylinder 70 and a cylinder seat 71. The telescopic cylinder 70 is installed on the workbench 1 with the help of the cylinder seat 71, and the output end of the telescopic cylinder 70 is connected to the frame 8.

[0036] The guide mechanism 4 is installed on the discharging docking mechanism 5 and is used to guide the discharging mechanism 23 on the mixing mechanism 2 to the discharging docking mechanism 5 when the mixing mechanism 2 is translated. The docking module 51 in the discharging docking mechanism 5 can dock with the discharging mechanism 23 during the translation of the discharging mechanism 23. The guide mechanism 4 includes two symmetrically arranged guide plates 40, which are installed on the slide 50. One end of the guide plate 40 is provided with an extension plate 41 perpendicular to it. The connection between the extension plate 41 and the guide plate 40 adopts a rounded transition. The discharging docking mechanism 5 includes a slide 50 and a docking module 51. The docking module 51 is slidably connected to a guide surface 500 set in the slide 50. Slide columns 514 are provided on the front and rear sides of the docking module 51, and the side of the slide 50 is provided with a guide hole 501 that matches the slide column 514;

[0037] The docking module 51 includes a guide block 510, a guard plate 511, a docking portion 512 and a connecting pipe 513. The guide block 510 is slidably connected to the guide surface 1 500 by means of the guide surface 2 516 provided thereon. The guard plate 511 is fixed to the upper end of the guide block 510. The upper end of the guide block 510 is also provided with a docking portion 512 that can cooperate with the docking pipe 232. A discharge channel 515 is provided in the guide block 510 and is connected to the docking portion 512. The lower end of the discharge channel 515 is connected to the connecting pipe 513.

[0038] Example 1:

[0039] This embodiment discloses a dry-curing desulfurizer, which is obtained by the method described above and is specifically prepared from the following raw materials in parts by weight: 45 parts by weight of soap mud, 30 parts by weight of sodium hydroxide, 30 parts by weight of carbide slag, 50 parts by weight of urea, 10 parts by weight of sodium bicarbonate, and 25 parts by weight of magnesium carbonate.

[0040] Prepare dry curing desulfurizer as follows:

[0041] S1. Soap mud, sodium hydroxide and carbide slag were mixed in a weight ratio of 3:1:2 and allowed to stand for 2h, dried and ground into a powder to obtain a mixed powder A;

[0042] S2. The mixed powder A obtained in step S1 was weighed with urea, sodium bicarbonate, and magnesium carbonate and then fully mixed into the preparation apparatus to obtain a mixed powder B;

[0043] S3. The mixed powder B is transferred to the pulverizer through the discharge docking mechanism in the preparation device, where it is ground and pulverized. The qualified fine powder is sieved out by the air classifier and enters the cyclone collector. The cyclone collector collects the material and discharges it through the discharge valve. The material is collected and sent to the finished product warehouse for shipment. The dust collector filters and collects the dust, and the clean air is discharged from the fan.

[0044] Example 2: The rest is the same as Example 1, except that:

[0045] The raw material ratio is: 60 parts by weight of soap mud, 15 parts by weight of sodium hydroxide, 40 parts by weight of carbide slag, 60 parts by weight of urea, 15 parts by weight of sodium bicarbonate, and 30 parts by weight of magnesium carbonate.

[0046] Example 3: The rest is the same as Example 1, except that:

[0047] The raw material ratio is 75 parts by weight of soap mud, 20 parts by weight of sodium hydroxide, 50 parts by weight of carbide slag, 70 parts by weight of urea, 20 parts by weight of sodium bicarbonate, and 40 parts by weight of magnesium carbonate.

[0048] The dry solidification desulfurizer or combustion-accelerating sulfur-fixing agent powder prepared in the embodiment was mixed into the flue gas after coal combustion at 3.0 wt% of the coal amount. After combustion, the reduction ratio of NOx and SO2 in the exhaust gas was measured. The calculation formula is:

[0049] Desulfurization / denitrification ratio = (C0-C x ) / C0*100%, where C X is the content of NOx or SO2 in the coal combustion exhaust gas to which dry solidification desulfurizer or combustion-accelerating sulfur-fixing agent is added; C0 is the content of NOx or SO2 in the coal combustion exhaust gas to which no dry solidification desulfurizer or combustion-accelerating sulfur-fixing agent is added.

[0050] Commercially available desulfurizers are made from microcrystalline kaolin, periclase, carbide slag, red mud, slag, and vermiculite. When used in the desulfurization and denitrification of coal combustion exhaust gas, the present invention achieves better results with a smaller dosage. However, when an equal amount of commercially available desulfurizer is added to coal, the smaller dosage does not achieve the optimal dosage, significantly reducing the desulfurization effect.

[0051] The working process of the above-mentioned preparation device is as follows:

[0052] After the mixed powder A obtained in step S1 is weighed with urea, sodium bicarbonate and magnesium carbonate and put into the preparation device for mixing, the drive motor 30 is turned off until the mixing barrel 20 stabilizes, and then the telescopic cylinder 70 is started to drive the frame 8 to move horizontally toward the cylinder seat 71. Under the action of the guiding mechanism, the docking pipe 232 moves along the guide plate 40 to the guard plate 511, and then the guide block 510 is driven to move horizontally synchronously. Under the action of the guide surface 500, the guide block 510 will continue to rise while moving horizontally until the docking portion 512 at the upper end of the guide block 510 is inserted into the docking pipe 232, thereby completing the connection between the discharging mechanism 23 and the docking module 51, and opening the electric ball valve 231 to start discharging.

[0053] After the discharge is completed, the electric ball valve 231 is closed, and the telescopic oil cylinder 70 drives the frame 8 to reset, and the docking module 51 is also reset.

[0054] The above embodiments are only for illustrating the technical ideas of the present invention and cannot be used to limit the scope of protection of the present invention. Any changes made on the basis of the technical solutions in accordance with the technical ideas proposed by the present invention fall within the scope of protection of the present invention; any technologies not involved in the present invention can be implemented by existing technologies.

Claims

1. A preparation device for a dry solidification desulfurizer, characterized in that: The invention comprises a workbench (1), a mixing mechanism (2), a rotating power mechanism (3), a guide mechanism (4) and a discharge docking mechanism (5); the mixing mechanism (2) is mounted on the workbench (1) by means of a frame (8) and is connected to the rotating power mechanism (3); the rotating power mechanism (3) is mounted on the frame (8) and is used to drive the mixing mechanism (2) to rotate; the frame (8) is slidably connected to the workbench (1) and can realize horizontal movement of the frame (8) by means of a translation mechanism (7); the guide mechanism (4) is mounted on the discharge docking mechanism (5) and is used to guide the discharge mechanism (23) on the mixing mechanism (2) to the discharge docking mechanism (5) when the mixing mechanism (2) is translated; the docking module (51) in the discharge docking mechanism (5) can dock with the discharge mechanism (23) during the translation of the discharge mechanism (23); The guide mechanism (4) comprises two symmetrically arranged guide plates (40), one end of the guide plate (40) is provided with an extension plate (41) perpendicular to the guide plate (40), and the connection between the extension plate (41) and the guide plate (40) adopts a rounded transition; The discharge docking mechanism (5) includes a slide (50) and a docking module (51), wherein the docking module (51) is slidably connected to a guide surface (500) provided in the slide (50), and slide posts (514) are provided on the front and rear sides of the docking module (51), and a guide hole (501) matched with the slide post (514) is provided on the side surface of the slide (50); The docking module (51) includes a guide block (510), a guard plate (511), a docking portion (512) and a connecting pipe (513). The guide block (510) is slidably connected to the guide surface (500) by means of the guide surface (516) provided thereon. The guard plate (511) is fixed to the upper end of the guide block (510). The upper end of the guide block (510) is also provided with a docking portion (512) capable of cooperating with the docking pipe (232). A discharge channel (515) is provided in the guide block (510) and is communicated with the docking portion (512). The lower end of the discharge channel (515) is connected to the connecting pipe (513).

2. The preparation device of a dry solidification desulfurizer according to claim 1, characterized in that: The mixing mechanism (2) comprises a mixing barrel (20), an end cover (21), a feed port (22) and a discharge mechanism (23); the end cover (21) is mounted on both ends of the mixing barrel (20); the outer ends of the end covers (21) are connected to a drive shaft (24); the drive shaft (24) is rotatably connected to the frame (8) by means of a bearing; the feed port (22) and the discharge mechanism (23) are both mounted on the outer periphery of the mixing barrel (20).

3. The preparation device of a dry curing desulfurizer according to claim 2, characterized in that: The discharge mechanism (23) comprises a discharge pipe (230), an electric ball valve (231) and a butt joint (232); the discharge pipe (230) is fixed to the outer periphery of the mixing barrel (20); and the discharge pipe (230), the electric ball valve (231) and the butt joint (232) are connected in sequence.

4. The preparation device of a dry solidification desulfurizer according to claim 1, characterized in that: The rotary power mechanism (3) comprises a driving motor (30), a main pulley (31) and a secondary pulley (32). The driving motor (30) is mounted on a frame (8) and its output end is connected to the main pulley (31). The main pulley (31) is connected to the secondary pulley (32) by means of a conveyor belt (33). The secondary pulley (32) is connected to one of the driving shafts (24).

5. The preparation device of a dry solidification desulfurizer according to claim 1, characterized in that: The translation mechanism (7) comprises a telescopic oil cylinder (70) and an oil cylinder seat (71); the telescopic oil cylinder (70) is mounted on the workbench (1) by means of the oil cylinder seat (71); and the output end of the telescopic oil cylinder (70) is connected to the frame (8).

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