CN116832664A - A dry curing desulfurizer, preparation device and preparation method - Google Patents

Abstract

The invention discloses a dry curing desulfurizing agent, which belongs to the technical field of desulfurization and denitrification additive processing, and is prepared from the following raw materials in parts by weight: the invention also discloses a preparation device and a preparation method for preparing the desulfurizing agent, wherein the desulfurizing agent comprises a workbench, a mixing mechanism, a rotating power mechanism, a guiding mechanism and a discharging butt joint mechanism, and the whole rack and a mixing barrel are arranged in the preparation device to be of a translatable structure so as to realize the switching of a mixing station and a discharging station according to the needs; the guide mechanism can guide the discharging mechanism to smoothly enter the discharging butt joint mechanism and realize butt joint of the discharging mechanism and the discharging butt joint mechanism in the translation process, so that the trouble of manual butt joint is eliminated, and the efficiency is improved.

Description

A dry curing desulfurizer, preparation device and preparation method

Technical field

The invention relates to the technical field of desulfurization and denitrification additive processing, and in particular to a dry curing desulfurization agent and a preparation method thereof.

Background technique

In the cement preparation process, raw materials need to be calcined _into clinker using coal in a rotary kiln. During the combustion _{process ,} coal will produce a large amount of _NO The existing method 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 meal, but cannot fix the nitrogen element. This results in the existing fixation agent. Sulfur agents have poor denitrification effect on coal and cannot reduce _NOx emissions. In addition, the desulfurization effect of the existing sulfur-fixing agents is unsatisfactory and cannot meet the existing emission standards. The components of the sulfur-fixing agents need to be further improved.

Soap sludge and carbide slag are both industrial waste or by-products. How to use them in sulfur-fixing agents to improve the desulfurization effect is an urgent problem to be solved. Applying soap sludge and carbide slag to sulfur-fixing agents can not only solve the problem of industrial waste treatment It can also significantly reduce the production cost of sulfur-fixing agents.

In addition, the preparation of desulfurizers in the prior art often uses a mixing device to mix multiple components. After the mixing is completed, it is necessary to manually operate the docking discharge port to transfer the materials, and to manually close the discharge port again after the transfer. During this process, the discharge port needs to be kept in a stable vertical downward state, which is very inconvenient and restricts production efficiency.

Contents of the invention

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

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

A preparation device for dry curing desulfurization agent, including a workbench, a mixing mechanism, a rotary power mechanism, a guide mechanism and a discharge and docking mechanism. The mixing mechanism is installed on the workbench by means of a frame and is connected to the rotary power mechanism. connection, the rotary power mechanism is installed on the frame and is used to drive the mixing mechanism to rotate. The frame is slidingly connected to the workbench and can achieve horizontal movement of the frame with the help of a translation mechanism. The guide mechanism is installed on the row. On the material docking mechanism and used to guide the discharging 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 interact with the discharge mechanism during the translation process. Material organization docking.

Preferably, the mixing mechanism includes a mixing barrel, an end cover, a feed port and a discharging mechanism. The end covers are installed at both ends of the mixing barrel. The outer ends of the end covers are connected to a driving shaft, and the driving shaft is driven by The bearing is rotatably connected to the frame, and the feed port and the discharge mechanism are installed on the outer periphery of the mixing barrel.

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

Preferably, the rotary power mechanism includes a drive motor, a main pulley and a auxiliary pulley. The drive motor is installed on the frame and its output end is connected to the main pulley. The main pulley is connected to the auxiliary pulley by means of a conveyor belt, and the auxiliary pulley is connected to the main pulley. One of the drive shafts is connected.

Preferably, the guide mechanism includes two symmetrically arranged guide plates. One end of the guide plates is provided with an extension plate perpendicular to each other. The connection between the extension plate and the guide plate adopts a rounded corner transition.

Preferably, the discharge and docking mechanism includes a slide table and a docking module. The docking module is slidingly connected to a guide surface provided in the slide table. Slide columns are provided on the front and rear sides of the docking module. The slide table is There are guide holes on the side that match the sliding columns.

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 guide block. The upper end of the guide block is also provided with a docking portion that can match the docking pipe. The guide block is provided with a discharge channel and is connected to the docking portion. The lower end of the discharge channel is connected to the connecting pipe.

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

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

S1. Mix soap sludge, sodium hydroxide and carbide slag according to the weight ratio of 3:1:2 and let it stand for 2 hours, then dry and grind it into powder to obtain mixed powder A;

S2. Weigh the mixed powder A obtained in step S1, urea, sodium bicarbonate, and magnesium carbonate, then put them into the preparation device and mix them thoroughly to obtain mixed powder B;

S3. Transfer the mixed powder B to the pulverizer through the discharge and docking mechanism in the preparation device, and grind and pulverize it inside the pulverizer. The qualified fine powder that reaches the fineness is screened out by the air flow classifier and enters the cyclone collector. The cyclone collects it. The material is collected by the dust collector and discharged through the discharge valve, and then collected into the finished product warehouse for shipment. The dust collector filters and collects the dust, and the clean air is discharged from the fan.

The invention also discloses a dry solidification desulfurization agent, which is obtained by the above-mentioned method and is specifically prepared from the following raw materials by weight: 50 to 80 parts of soap sludge, 30 to 50 parts of calcium carbide slag, and 50 to 70 parts of urea. , 10 to 20 parts of sodium bicarbonate, 25 to 40 parts of magnesium carbonate.

Beneficial effects obtained by the present invention:

1. In the present invention, the entire frame and mixing barrel are arranged into a translatable structure, so that the mixing station and the discharging station can be switched as needed.

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

3. The present invention uses a variety of industrial by-products and scraps to interact with each other to achieve sulfur fixation and reduce _NO There is no safety hazard, and when added to coal, it also has the advantages of partially reducing coal consumption, reducing carbon dioxide emissions, and reducing environmental pollution.

Description of the drawings

Figure 1 is a schematic structural diagram of the preparation device in the present invention.

Figure 2 is a front view of Figure 1.

Figure 3 is a schematic structural diagram of the discharge and docking mechanism.

FIG. 4 is a top view of FIG. 3 .

FIG. 5 is a cross-sectional view along the A-A direction in FIG. 4 .

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

Detailed ways

The specific implementation modes of the present invention will be further described in detail through the description of the examples below to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

A preparation device for dry curing desulfurization agent, including a workbench 1, a mixing mechanism 2, a rotating power mechanism 3, a guide mechanism 4 and a discharge and docking mechanism 5;

The mixing mechanism 2 is installed on the workbench 1 by means of the 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 caps 21 are installed at both ends of the mixing barrel 20, the outer ends of the end caps 21 are connected to a drive shaft 24, the drive shaft 24 is rotationally connected to the frame 8 by means of bearings, the feed port 22 and the discharge The material mechanism 23 is installed on the outer periphery of the mixing barrel 20 .

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

The rotary power mechanism 3 is installed on the frame 8 and is used to drive the mixing mechanism 2 to rotate. The rotary power mechanism 3 includes a drive motor 30, a main pulley 31 and an auxiliary pulley 32. The drive motor 30 is installed on the frame 8. and its output end is connected to the main pulley 31. The main pulley 31 is connected to the auxiliary pulley 32 by means of the conveyor belt 33. The auxiliary pulley 32 is connected to one of the drive shafts 24.

The frame 8 is slidingly connected to the workbench 1 (such as by means of the 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 base 71, so The telescopic oil cylinder 70 is installed 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 .

The guide mechanism 4 is installed 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 can dock with the discharging mechanism 23 during the translation process of the discharging mechanism 23. The guide mechanism 4 includes two symmetrically arranged guide plates 40. The guide plates 40 are installed on the sliding table 50. The guide plates 40 are One end is provided with an extension plate 41 that is perpendicular to each other. The connection between the extension plate 41 and the guide plate 40 adopts a rounded corner transition. The discharge docking mechanism 5 includes a sliding table 50 and a docking module 51. The docking module 51 slides Connected to the guide surface 500 provided in the slide table 50, the docking module 51 is provided with sliding columns 514 on the front and rear sides, and the side of the slide table 50 is provided with guide holes 501 that match the sliding columns 514;

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 plate 511 is fixed on 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. The guide block 510 is provided with a discharge channel 515 and is connected with the docking portion 512. The lower end of the discharge channel 515 is connected to the connecting pipe 513 .

Example 1:

This embodiment discloses a dry curing desulfurization agent, which is obtained by the method described above and is specifically prepared from the following raw materials by weight: 45 parts by weight of soap sludge, 30 parts by weight of sodium hydroxide, 30 parts by weight of calcium carbide slag, 50 parts by weight of urea, 10 parts by weight of sodium bicarbonate, and 25 parts by weight of magnesium carbonate.

Prepare dry curing desulfurizer as follows:

S1. Mix soap sludge, sodium hydroxide and carbide slag according to the weight ratio of 3:1:2 and let it stand for 2 hours, then dry and grind it into powder to obtain mixed powder A;

S2. Weigh the mixed powder A obtained in step S1, urea, sodium bicarbonate, and magnesium carbonate, then put them into the preparation device and mix them thoroughly to obtain mixed powder B;

S3. Transfer the mixed powder B to the pulverizer through the discharge and docking mechanism in the preparation device, and grind and pulverize it inside the pulverizer. The qualified fine powder that reaches the fineness is screened out by the air flow classifier and enters the cyclone collector. The cyclone collects it. The material is collected by the dust collector and discharged through the discharge valve, and then collected into the finished product warehouse for shipment. The dust collector filters and collects the dust, and the clean air is discharged from the fan.

Embodiment 2: The rest are the same as Embodiment 1, except that:

The raw material ratio is: 60 parts by weight of soap sludge, 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.

Embodiment 3: The rest are the same as Embodiment 1, except that:

The raw material ratio is 75 parts by weight of soap sludge, 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.

The dry curing desulfurization agent or combustion-promoting sulfur-fixing agent powder prepared in the example is blended into the flue gas after coal combustion at 3.0wt% of the coal amount. After combustion, the NOx and _SO2 reduction ratio in the exhaust gas are measured and calculated. The formula is:

Desulfurization/denitrification ratio = (C _{0 -C x} )/C ₀ *100%, where _{C 0} is the NOx or SO ₂ content in the coal combustion exhaust gas without the addition of dry-curing desulfurizer or combustion-promoting sulfur-fixing agent.

Commercially available desulfurizers are made of microcrystalline kaolin, periclase, carbide slag, red mud, slag and vermiculite. When the present invention is used for desulfurization and denitrification of coal combustion exhaust gas, the dosage is small and the effect is better. When the same amount of commercially available desulfurizer is used to mix coal, the optimal dosage cannot be achieved due to the small dosage, resulting in a significant reduction in the desulfurization effect. .

The working process of the above preparation device is as follows:

After the mixed powder A obtained in step S1, urea, sodium bicarbonate, and magnesium carbonate are weighed and put into the preparation device, the driving motor 30 is turned off until the mixing barrel 20 stabilizes, and then the telescopic cylinder 70 is started to drive the machine. The frame 8 moves horizontally toward the direction of the cylinder base 71. Under the action of the guide 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. The connection between the discharging mechanism 23 and the docking module 51 is completed. The electric ball valve 231 is opened to start discharging. .

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

The above embodiments are only for illustrating the technical ideas of the present invention and cannot limit the protection scope of the present invention. Any changes made based on the technical solutions based on the technical ideas proposed by the present invention will fall within the protection scope of the present invention. Within; technologies not involved in the present invention can be implemented through existing technologies.

Claims (10)

1. The utility model provides a preparation facilities of dry curing desulfurizing agent, its characterized in that includes workstation (1), compounding mechanism (2), rotary power mechanism (3), guiding mechanism (4) and row material docking mechanism (5), compounding mechanism (2) are installed on workstation (1) and are connected with rotary power mechanism (3) with the help of frame (8), rotary power mechanism (3) are installed on frame (8) and are used for driving compounding mechanism (2) rotation, frame (8) sliding connection is on workstation (1) and can realize the horizontal migration of frame (8) with the help of translation mechanism (7), guiding mechanism (4) are installed on row material docking mechanism (5) and are used for guiding on compounding mechanism (2) row material mechanism (23) to row material docking mechanism (5) department when translating on compounding mechanism (2), docking module (51) in row material docking mechanism (5) can dock with row material mechanism (23) in the in-process of row material mechanism (23) translation.

2. The device for preparing the dry curing desulfurizer according to claim 1, wherein the mixing mechanism (2) comprises a mixing barrel (20), an end cover (21), a feed inlet (22) and a discharge mechanism (23), the end cover (21) is arranged at two ends of the mixing barrel (20), the outer end of the end cover (21) is connected with a driving shaft (24), the driving shaft (24) is rotatably connected to the frame (8) by means of a bearing, and the feed inlet (22) and the discharge mechanism (23) are arranged at the periphery of the mixing barrel (20).

3. The device for preparing the dry curing desulfurizing agent according to claim 2, wherein the discharging mechanism (23) comprises a discharging pipe (230), an electric ball valve (231) and a butt joint pipe (232), the discharging pipe (230) is fixed on the periphery of the mixing barrel (20), and the discharging pipe (230), the electric ball valve (231) and the butt joint pipe (232) are sequentially connected.

4. The apparatus for producing a dry curing desulfurization agent according to claim 1, characterized in that the rotary power mechanism (3) comprises a drive motor (30), a main pulley (31) and a secondary pulley (32), the drive motor (30) is mounted on the frame (8) and the output end thereof is connected to the main pulley (31), the main pulley (31) is connected with the secondary pulley (32) by means of a conveyor belt (33), and the secondary pulley (32) is connected with one of the drive shafts (24).

5. The device for preparing the dry curing desulfurizer according to claim 1, wherein the guiding mechanism (4) comprises two symmetrically arranged guiding plates (40), one end of each guiding plate (40) is provided with an extending plate (41) which is mutually perpendicular to the guiding plates, and the joint of each extending plate (41) and each guiding plate (40) adopts a fillet transition.

6. The device for preparing the dry curing desulfurizing agent according to claim 3, wherein the discharging and butting mechanism (5) comprises a sliding table (50) and a butting module (51), the butting module (51) is slidably connected to a first guide surface (500) arranged in the sliding table (50), sliding columns (514) are arranged on the front side and the rear side of the butting module (51), and guide holes (501) matched with the sliding columns (514) are formed in the side faces of the sliding table (50).

7. The device for preparing the dry curing desulfurizer according to claim 6, wherein the butt joint module (51) comprises a guide block (510), a guard plate (511), a butt joint part (512) and a connecting pipe (513), the guide block (510) is slidably connected to the first guide surface (500) by means of the second guide surface (516) arranged on the guide block, the guard plate (511) is fixed to the upper end of the guide block (510), the butt joint part (512) which can be matched with the butt joint pipe (232) is further arranged at the upper end of the guide block (510), a discharge channel (515) is arranged in the guide block (510) and is communicated with the butt joint part (512), and the lower end of the discharge channel (515) is connected with the connecting pipe (513).

8. The device for preparing a dry curing desulfurizing agent according to claim 1, wherein the translation mechanism (7) comprises a telescopic cylinder (70) and a cylinder base (71), the telescopic cylinder (70) is mounted on the workbench (1) by means of the cylinder base (71), and the output end of the telescopic cylinder (70) is connected to the frame (8).

9. The method for preparing the dry curing desulfurizing agent by using the preparation device as claimed in claim 1, which is characterized by comprising the following specific preparation steps:

s1, mixing the soap mud with sodium hydroxide and carbide slag according to the following proportion of 3:1:2, mixing and standing for 2 hours according to the weight ratio, and drying and grinding into powder to obtain mixed powder A;

s2, weighing the mixed powder A obtained in the step S1, urea, sodium bicarbonate and magnesium carbonate, and then putting into a preparation device for fully mixing to obtain mixed powder B;

s3, transferring the mixed powder B into a pulverizer through a discharging butt-joint mechanism in the preparation device, grinding and pulverizing the mixed powder B in the pulverizer, screening out qualified fine powder reaching fineness through an air classifier, discharging the qualified fine powder through a discharging valve after the material is collected by the cyclone collector, and collecting and transporting the powder to a finished product bin, wherein dust is filtered and collected by a dust remover, and clean air is discharged from a fan.

10. The dry curing desulfurizing agent is characterized by being obtained by adopting the method as claimed in claim 9, and is prepared from the following raw materials in parts by weight: 40-80 parts of soap mud, 30-50 parts of carbide slag, 50-70 parts of urea, 10-20 parts of sodium bicarbonate and 25-40 parts of magnesium carbonate.