Production system of calcium-based efficient particle desulfurizing agent

Abstract

The utility model provides a production system of a calcium-based efficient particle desulfurizing agent, which belongs to the technical field of desulfurizing agent production, and is characterized in that a certain amount of medicament and water are respectively added into a reaction kettle by a medicament adding system and a water adding system for stirring and mixing, and a feeding pump is also arranged at the outlet end of the reaction kettle; the powder bin is further connected with the metering component, and the metering component can measure powder with a certain amount from the powder bin. The stirring equipment comprises at least one helical ribbon stirrer and at least two double-shaft stirrers which are connected with each other; an inlet end of the helical ribbon stirrer is connected with the metering component so as to input metered powder, an outlet end of the helical ribbon stirrer is connected with a feeding port of the first double-shaft stirrer, the feeding port is further connected with an outlet of the feeding pump, the second double-shaft stirrer is connected with the forming machine, and the forming machine is connected with a drying machine. The production system of the calcium-based high-efficiency granular desulfurizer can automatically and efficiently produce the calcium-based high-efficiency granular desulfurizer, and the productivity is stable and reliable.

Description

Technical Field

[0001] The utility model relates to a desulfurizing agent production device. Specifically, the utility model mainly relates to an automatic production line of a calcium-based high-efficiency granular desulfurizing agent. Background Art

[0002] Calcium-based high-efficiency granular desulfurizer is a high-efficiency desulfurization material, suitable for the steel production industry, chemical industry, coking industry and other fields. It is mainly used in flue gas treatment moving bed, fixed bed and various flue gas purification facilities containing sulfur dioxide. The calcium-based high-efficiency granular desulfurizer absorbs sulfur dioxide in the flue gas in the reactor and undergoes a solidification reaction to fix the sulfur dioxide. The desulfurizer with the working sulfur capacity is discharged from the reactor, and new calcium-based high-efficiency granular desulfurizer is added to complete the desulfurization. Among them, the calcium-based high-efficiency granular desulfurizer product has the characteristics of high specific surface area, high microporous structure and high adsorption. It increases the residence time of sulfur dioxide in the desulfurizer environment during the reaction, greatly improves the removal efficiency, has the advantages of a wide applicable flue gas temperature range and low operating costs, and is therefore widely used.

[0003] In the preparation of calcium-based high-efficiency granular desulfurizer, the traditional general-purpose granular material production equipment is still mainly used, that is, the general-purpose equipment and method for producing granular materials. After the workers prepare all the materials, they are poured into the mixing equipment for mixing, and then transferred from the mixing equipment to the molding machine to extrude the desulfurizer particles of the corresponding shape. There is no special automated production equipment to realize the automated production of calcium-based high-efficiency granular desulfurizer. Due to too many manual processes, it is easy to cause local process operation errors and affect the entire production process, and produce unqualified or unstable quality desulfurizer. Moreover, since the molding machine used has a certain extrusion hole for molding, when producing multiple specifications, it is necessary to design and manufacture multiple corresponding templates, and the templates need to be changed frequently. For some small batches of desulfurizer particles, a separate molding equipment must be occupied, which also brings inconvenience to production management. Utility Model Content

[0004] One of the technical problems to be solved by the utility model is to design a special calcium-based high-efficiency granular desulfurizer production line. The production system of the calcium-based high-efficiency granular desulfurizer can automatically realize the production of the calcium-based high-efficiency granular desulfurizer, with high and stable production capacity and low requirements on personnel operation.

[0005] In order to achieve the above-mentioned purpose, the technical personnel in this field have adopted the following technical scheme: a production system of a calcium-based high-efficiency granular desulfurizer, comprising a powder silo for containing raw materials, a stirring device for stirring the powder, and a molding machine for extruding and molding desulfurizer particles, and also comprising a reactor, a reagent adding system and a water adding system, wherein the reagent adding system and the water adding system respectively add a predetermined amount of reagent and water into the reactor for stirring and mixing, and a feeding pump is also installed at the outlet end of the reactor; the powder silo is also connected to a metering component, and the metering component can measure a predetermined amount of powder from the powder silo; the stirring device comprises at least one spiral ribbon mixer and at least two twin-shaft mixers connected to each other; the inlet end of the spiral ribbon mixer is connected to the metering component to input the measured powder, the outlet end of the spiral ribbon mixer is connected to the feed port of the first twin-shaft mixer, and the feed port is also connected to the outlet of the feeding pump, the second twin-shaft mixer is connected to the molding machine, and the molding machine is connected to a drying machine.

[0006] Preferably, the powder bin includes a raw material bin for containing calcium hydroxide, an auxiliary material bin for containing auxiliary raw materials, and an adhesive bin for containing adhesives, and the raw material bin, auxiliary material bin and adhesive bin are each connected to a metering screw serving as the metering component, and all metering screws are connected to the inlet end of the ribbon mixer so that each metering screw can receive a predetermined amount of material from each bin and transport it to the ribbon mixer.

[0007] Preferably, the drying machine is a mesh belt dryer, and the drying temperature of the mesh belt dryer is 80-200 degrees, and a baler is connected to the output end of the mesh belt dryer. The forming machine can form columnar particles with a circular or four-leaf clover cross section.

[0008] Preferably, the molding machine has a material chamber for containing the stirred mixture, in which a pushing component and a template are vertically slidably installed. When the pushing component moves vertically downward to the limit, it squeezes the material and opens the extrusion hole on the template to extrude the columnar particles.

[0009] Preferably, the pushing component includes a piston rod vertically slidably installed in the material chamber, and a push rod is coaxially fixed to the piston disc of the piston rod. The push rod is coaxially inserted into the center of the template and is elastically connected to the template axially, so that the pushing component and the template form a whole that can move together, and the area between the template and the piston disc is used to be filled with material to move downward with a predetermined amount of material. When the template moves to the point where the limit piece on the inner wall of the material chamber comes into contact, the continued downward movement of the pushing component will cause the push rod and the template to move relative to each other, and the piston disc moves close to the template to open the extrusion hole.

[0010] Preferably, there is a round tube in the center of the template, and the push rod axially penetrates the round tube and is elastically connected to the template through a compression spring located in the round tube, and the compression spring is sleeved on the push rod.

[0011] Preferably, there are several discharge holes in an annular array on the template, each of which is a countersunk structure, in which a module is axially installed and elastically squeezed into the countersunk hole, one end of the module is provided with a diverter cone, and an annular step surface formed between the diverter cone and the module is in contact with the step surface of the countersunk hole, and the annular step surface is penetrated by several extrusion holes arranged vertically, and all the extrusion holes are arranged around the annular array of the modules; in the process of the piston disk approaching the template, the material squeezes the diverter cone to separate the step surfaces between the module and the countersunk hole from each other.

[0012] Preferably, a vertically retractable pressing hook is provided at the port of the countersunk hole, and all the pressing hooks are arranged in a circular array at the edge of the end face of the module; the extrusion holes have various specifications and are arranged in a circular array at the outer side of the module.

[0013] Preferably, the material chamber is L-shaped, and the pushing component and the template are vertically installed in the vertical chamber section of the material chamber, with a connecting channel on the upper side of the vertical chamber section, and an arc-shaped guide plate on the upper side of the connecting channel. When the pushing component and the template are moved up to the limit as a whole, the area between the piston disk and the template is just opposite to the connecting channel.

[0014] Compared with the prior art, the invention of the utility model has the following beneficial effects: the utility model integrates a series of process equipment into a dedicated production line for the production of calcium-based high-efficiency granular desulfurizer, which greatly improves production efficiency and ensures product quality; at the same time, the existing desulfurizer granule extrusion molding equipment is also improved, and the designed molding machine can produce desulfurizers of various specifications at the same time, which improves equipment utilization while also improving production efficiency and reducing the burden of production management.

[0015] As for other positive effects, advantages, and optimized technical features of the utility model, they will be illustrated through detailed elaboration of subsequent specific embodiments. Some technical features still require general technicians in this field to fully study and practice the utility model in order to be better understood and applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the principle of the production system of the calcium-based high-efficiency granular desulfurizer;

[0017] Figure 2 This is a partial structural diagram of a molding machine in the production system of this calcium-based high-efficiency granular desulfurizer;

[0018] Figure 3 for Figure 2 A magnified view of the structure at M in the middle;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure in which the modules are pushed out;

[0020] Figure 5 A bottom view of the template;

[0021] Figure 6-7 Two structural diagrams of the module.

[0022] Among them, the material chamber 1, the piston rod 2, the piston disc 3, the push rod 4, the template 5, the round tube 6, the compression spring 7, the limiter 8, the connecting channel 9, the guide plate 10, the discharge hole 11, the diverter cone 12, the module 13, the pressure hook 14, the annular step surface 15, and the extrusion hole 16. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the principle of the present invention will be explained in depth with reference to the accompanying drawings and at least one detailed embodiment. Those skilled in the art should be aware that the specific embodiments described below are only intended to explain the technical principles of the present invention, and are not intended to limit the present invention to be implemented in this way.

[0024] like Figure 1As shown, as a production system of a calcium-based high-efficiency granular desulfurizer of the utility model, it mainly includes a powder silo for containing raw materials and a stirring device for stirring the powder, wherein the powder includes high-quality calcium hydroxide. In this embodiment, a molding machine for extruding and molding the calcium-based high-efficiency granular desulfurizer is also provided to finally produce the corresponding granular desulfurizer. In addition, the production system is also equipped with a reactor, and a supporting reagent adding system and a water adding system. Specifically, the above-mentioned reagent adding system is mainly used to add the required reagents. In this embodiment, the pore-forming agent that can improve the void structure of the desulfurizing agent and the catalyst for catalyzing the sulfur reaction are added, such as: alcohol ammonia, urea, ammonium salt and alkaline substances, and the content is selected from 1% to 5%. Then, together with the water adding system, a predetermined amount of reagents and water are added to the reactor to stir and mix. The normal temperature reaction time of the reagent and water using the reactor is 30 minutes, so it is best to set the reactor reaction time. After being fully stirred and mixed, it is quantitatively transported to the mixer through a feeding pump, so a feeding pump can be installed at the outlet of the reactor. In order to realize automatic quantitative feeding, the powder bin in this embodiment is also connected to a metering component, which can measure a predetermined amount of powder from the powder bin to be delivered. In more detail, the mixing equipment includes at least one ribbon mixer and at least two twin-shaft mixers connected to each other. The inlet end of the ribbon mixer is connected to the metering component to input the measured powder. The outlet end of the ribbon mixer is connected to the feed port of the first twin-shaft mixer, and the feed port is also connected to the outlet of the feed pump so that the agent and water can be added to the front section of the first twin-shaft mixer. The second twin-shaft mixer is connected to a molding machine so that the mixed material is extruded into columnar or four-leaf clover-shaped particles through the molding machine, and then the molding machine is connected to a dryer to dry the extruded particles into finished products.

[0025] Continue reading Figure 1 The powder bin includes a raw material bin for calcium hydroxide, an auxiliary material bin for auxiliary raw materials, and an adhesive bin for adhesives. Various raw materials are pre-installed in their respective bins, so that the raw material bin, the auxiliary material bin and the adhesive bin are each connected to a metering screw. All metering screws are connected to the inlet end of the ribbon mixer, so that each metering screw can directly transport a predetermined amount of material from each bin to the ribbon mixer, greatly improving the feeding efficiency. During specific manufacturing, the dryer in this system is a mesh belt dryer to facilitate drying during transportation, and the drying temperature of the mesh belt dryer is preferably 80-200 degrees. A baler is connected to the output end of the mesh belt dryer to package the release agent after drying.

[0026] As for the specific desulfurizer particles, based on the application of this calcium-based high-efficiency granular desulfurizer, it is required that this molding machine can form cylindrical particles with a circular or four-leaf clover cross section. Specifically, Figure 2As shown, the molding machine has a material chamber 1 for holding the stirred mixture, that is, the material chamber 1 is used to hold various powders and medicines and other mixed materials formed after mixing in the stirring equipment. In the material chamber 1 in this embodiment, a pushing component (the piston disc 3 and the push rod 4 mentioned later) and a template 5 are vertically slidably installed. The template 5 is slidably and sealedly installed in the material chamber 1. The main principle is that when the pushing component moves vertically downward to the limit, the material is squeezed, and the material generates a corresponding pressure on the template 5, so that the extrusion hole 16 on the template 5 is opened to extrude columnar particles to obtain the initial shape of the desulfurizer.

[0027] As one of the specific implementation structures, such as Figure 2 The pushing component includes a piston rod 2 vertically slidably installed in the material chamber 1, and a push rod 4 is coaxially fixed to the piston disc 3 of the piston rod 2. The push rod 4 is coaxially inserted into the center of the template 5 and is axially elastically connected to the template 5. That is, under normal conditions, the pushing component and the template 5 form a whole that can move together. The area between the template 5 and the piston disc 3 is used to be filled with materials. Pushing the piston rod 2 can move the piston disc 3 and the template 5 and the materials therebetween synchronously. However, when the template 5 moves to a limiter 8 on the inner wall of the material chamber 1 and contacts, the template 5 cannot move downward. At this time, the continued downward movement of the pushing component will cause the push rod 4 and the template 5 to move relative to each other, that is, the push rod 4 continues to pass through the template 5, and the piston disc 3 approaches the template 5, and then pushes the materials therebetween downward to extrude the template 5, that is, the piston disc 3 approaches the template 5 and opens the extrusion hole 16, thereby extruding the desulfurizer particles. For the elastic connection between the push rod 4 and the template 5, as Figure 2 A round tube 6 may be fixedly provided in the center of the template 5. After the push rod 4 axially penetrates the round tube 6, it is elastically connected to the template 5 through a compression spring 7 located in the round tube 6. The compression spring 7 is sleeved on the push rod 4, that is, when the push rod 4 moves downward, it can squeeze the compression spring 7.

[0028] As another detailed design structure, such as Figure 2-3 as well as Figure 5 The template 5 has a plurality of discharge holes 11 in a circular array, each of which is a countersunk structure, and a module 13 is axially installed in the countersunk hole and elastically squeezed into the countersunk hole. For example, a vertically retractable pressing hook 14 is provided at the end of the countersunk hole, and all the pressing hooks 14 are arranged in a circular array at the edge of the end surface of the module 13. Figure 7As shown, the extrusion holes 16 have various specifications and are arranged in a circular array on the outside of the module 13. At the same time, there is a diverter cone 12 at one end of the module 13. The annular step surface 15 formed between the diverter cone 12 and the module 13 contacts the step surface of the countersunk hole, so that the discharge hole 11 can be blocked under normal conditions. The design of the extrusion holes 16 can be that a plurality of extrusion holes 16 arranged vertically on the annular step surface 15 penetrate through, and all the extrusion holes 16 are preferably arranged in a circular array around the module 13. When the piston disc 3 approaches the template 5, as shown in FIG. Figure 4 , the material squeezes the diverter cone 12 to separate the step surface between the module 13 and the countersunk hole, the discharge hole 11 is opened, and the material can flow into the extrusion hole 16, and then the desulfurizer is extruded. In order to automatically quantitatively feed, such as Figure 1 The material chamber 1 is L-shaped, and the pushing component and the template 5 are vertically installed in the vertical chamber section of the material chamber 1, and a connecting channel 9 is provided on one side of the upper part of the vertical chamber section. An arc-shaped guide plate 10 is provided on one side above the connecting channel 9, and the guide plate 10 is curved downward. When the pushing component and the template 5 are moved up to the limit as a whole, the area between the piston disc 3 and the template 5 is just opposite to the connecting channel 9, and then a certain amount of material is added. In the process of the piston disc 3 moving up and back, the material is pushed up, and then after hitting the guide plate 10, it moves downward, so as to be concentrated and flow into the connecting channel 9, so as to facilitate the rapid and sufficient material replenishment in the area between the piston disc 3 and the template 5.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. The detailed description of the embodiments of the present application, as for the specific examples used, has detailed descriptions of the technical principles and implementation methods of the present application. It is only used to help those skilled in the art to fully and deeply understand the design concept of the present application, and it should not be understood as a sole or selective limitation on the technical principles of the present application. As for the detailed description of the present utility model by the preferred embodiments mentioned in the present application, ordinary technicians in this field should be able to make simple modifications to the technical solution of the present utility model or replace the means with equivalents on the basis of these preferred embodiments, but its core technical principles should be covered in the scope of protection embodied in the claims of the present utility model without departing from the technical ideas, design purposes and scope of application of the present utility model.

Claims

1. A production system of a calcium-based high-efficiency granular desulfurizer, comprising a powder silo for containing powder raw materials, a stirring device for stirring the powder, and a molding machine for extruding and molding desulfurizer particles, characterized in that: It also includes a reaction kettle, a reagent adding system and a water adding system, wherein the reagent adding system and the water adding system respectively add a predetermined amount of reagent and water into the reaction kettle for stirring and mixing, and a feeding pump is also installed at the outlet end of the reaction kettle; The powder bin is also connected to a metering component, and the metering component can measure a predetermined amount of powder from the powder bin; The stirring equipment includes at least one ribbon mixer and at least two twin-shaft mixers connected to each other; The inlet end of the ribbon mixer is connected to the metering component to input the measured powder, the outlet end of the ribbon mixer is connected to the feed port of the first double-shaft mixer, and the feed port is also connected to the outlet of the feed pump, the second double-shaft mixer is connected to the molding machine, and the molding machine is connected to a dryer.

2. A production system of a calcium-based high-efficiency granular desulfurizer according to claim 1, characterized in that: The powder bin includes a raw material bin for containing calcium hydroxide, an auxiliary material bin for containing auxiliary raw materials, and an adhesive bin for containing adhesives. The raw material bin, the auxiliary material bin and the adhesive bin are each connected to a metering screw as the metering component, and all the metering screws are connected to the inlet end of the ribbon mixer so that each metering screw can receive a predetermined amount of material from each bin and transport it to the ribbon mixer.

3. The production system of a calcium-based high-efficiency granular desulfurizer according to claim 1 is characterized in that: The drying machine is a mesh belt dryer, and the drying temperature of the mesh belt dryer can reach 80-200 degrees. The output end of the mesh belt dryer is connected to a baler.

4. The production system of a calcium-based high-efficiency granular desulfurizer according to claim 1 is characterized in that: The molding machine can mold columnar particles with a circular or four-leaf clover cross section.

5. A production system of a calcium-based high-efficiency granular desulfurizer according to claim 4, characterized in that: The molding machine comprises a material chamber (1) for containing the stirred mixture, wherein a pushing component and a template (5) are vertically slidably mounted in the material chamber (1), and when the pushing component moves vertically downward to a limit, the material is squeezed to open the extrusion hole (16) on the template (5) so as to extrude the columnar particles.

6. A production system of a calcium-based high-efficiency granular desulfurizer according to claim 5, characterized in that: The pushing component comprises a piston rod (2) vertically slidably mounted in the material chamber (1); a push rod (4) is coaxially fixed to the piston disc (3) of the piston rod (2); the push rod (4) is coaxially inserted into the center of the template (5) and is axially elastically connected to the template (5) so that the pushing component and the template (5) form a whole that can move together; the area between the template (5) and the piston disc (3) is used to be filled with material so as to move downward with a predetermined amount of material; when the template (5) contacts the limiting piece (8) on the inner wall of the material chamber (1), the continued downward movement of the pushing component causes the push rod (4) and the template (5) to move relative to each other, and the piston disc (3) moves closer to the template (5) to open the extrusion hole (16).

7. A production system of a calcium-based high-efficiency granular desulfurizer according to claim 6, characterized in that: The template (5) has a circular tube (6) in the center. The push rod (4) axially penetrates the circular tube (6) and is elastically connected to the template (5) via a compression spring (7) located in the circular tube (6). The compression spring (7) is sleeved on the push rod (4).

8. A production system of a calcium-based high-efficiency granular desulfurizer according to claim 6, characterized in that: The template (5) has a plurality of discharge holes (11) in an annular array, each of which is a countersunk structure, in which a module (13) is axially installed and elastically squeezed into the countersunk hole, and one end of the module (13) has a diverter cone (12), and an annular step surface (15) formed between the diverter cone (12) and the module (13) contacts the step surface of the countersunk hole, and a plurality of vertically arranged extrusion holes (16) penetrate the annular step surface (15), and all the extrusion holes (16) are arranged in an annular array around the module (13); when the piston disc (3) approaches the template (5), the material squeezes the diverter cone (12) to separate the step surfaces between the module (13) and the countersunk hole from each other.

9. A production system of a calcium-based high-efficiency granular desulfurizer according to claim 8, characterized in that: A vertically retractable pressing hook (14) is provided at the end of the countersunk hole, and all the pressing hooks (14) are arranged in a circular array at the edge of the end surface of the module (13); The extrusion holes (16) have various specifications and are arranged in a circular array on the outer side of the module (13).

10. A production system of a calcium-based high-efficiency granular desulfurizer according to claim 6, characterized in that: The material chamber (1) is L-shaped, the pushing component and the template (5) are vertically installed in the vertical chamber section of the material chamber (1), a connecting channel (9) is provided on one side of the upper part of the vertical chamber section, and an arc-shaped guide plate (10) is provided on one side above the connecting channel (9). When the pushing component and the template (5) are moved upward to the limit as a whole, the area between the piston plate (3) and the template (5) is exactly opposite to the connecting channel (9).

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