Quicklime digestion device and quicklime digestion system
By setting up an overflow valve on the branch of the water supply pipeline of the quicklime digestion device, the water pressure of digested water flowing to the atomized spray head is solved, and the problem of insufficient digestion water pressure during low load operation of the water pump is achieved, and the full contact between quicklime and digested water and the ideal digestion effect are achieved.
Patent Information
- Application Number
- CN202421497111.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-27
AI Technical Summary
When the existing quicklime digestion device operates at low load, the water pressure of the digested water is insufficient and the atomization cannot be sufficient, which in turn causes insufficient contact between the quicklime and the digested water, resulting in unsatisfactory digestion effect.
An overflow valve is installed on the pipeline branch connected to the water supply pipe and the atomization nozzle to adjust the water pressure of the digested water flowing to the atomization nozzle to ensure that the digested water can be fully atomized, and sufficient water pressure can be ensured even when the water pump is running at low load.
The water pressure is adjusted through the overflow valve to ensure that the digested water is fully atomized, so that quicklime and digested water can be fully in contact, improve the digestive effect, and meet the expected digestive effect.
Smart Images
Figure CN222961333U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of quicklime digestion, in particular to a quicklime digestion device and a quicklime digestion system. Background Art
[0002] Calcium hydroxide (Ca(OH) 2 ) is one of the desulfurizers with the best activity among common calcium-based desulfurizers, so it is widely used in the desulfurization process; it can achieve the purpose of flue gas desulfurization under medium and low temperature conditions and has a very broad application prospect in the future. At present, calcium hydroxide is generally formed by carrying out a digestion reaction on quicklime and a certain amount of digestion water using a quicklime digestion device. In order to enable the digestion water to fully contact the quicklime, the digestion water will be atomized first. In the prior art, the atomization treatment of the digestion water mainly relies on a water pump to provide a certain water pressure for the digestion water, and uses its water pressure as a power source to enable it to pass through an atomizing nozzle for atomization. However, when the water pump is operating at a low load, it will cause the water pressure provided by the water pump for the digestion water to be insufficient to fully atomize the digestion water when it passes through the atomizing nozzle; thus, the contact between the quicklime and the digestion water is insufficient, resulting in an unsatisfactory digestion effect.
[0003] It should be noted that the above content is only used to assist in understanding the technical solution of the utility model and does not represent an admission that the above content is the prior art. Summary of the Utility Model
[0004] The main purpose of the utility model is to propose a quicklime digestion device and a quicklime digestion system, aiming to achieve sufficient atomization treatment of the digestion water, so that the quicklime and the digestion water can fully contact, and ensure that the digestion effect meets the expectations.
[0005] To achieve the above purpose, the utility model proposes a quicklime digestion device, including a digester body and a water delivery pipeline, wherein the water delivery pipeline is used to deliver digestion water to the digester body; a plurality of atomizing nozzles are arranged inside the digester body, and the water delivery pipeline is connected to the atomizing nozzles through pipeline branches; an overflow valve is arranged on each pipeline branch, and the overflow valve is used to adjust the water pressure of the digestion water flowing to the atomizing nozzles in the pipeline branch;
[0006] Wherein the overflow valve is a self-operating pressure regulating valve, and its main components include a main valve core, a spring and an adjusting bolt, and the automatic adjustment of the outlet pressure is realized by using the free movement of the main valve core; its working principle is: when the outlet pressure increases, the pressure acts on the lower part of the main valve core, overcoming the spring force to raise the main valve core, thereby reducing the flow rate and lowering the outlet pressure; when the outlet pressure decreases, the spring force overcomes the pressure to press down the main valve core, increasing the flow rate and raising the outlet pressure.
[0007] In one embodiment, the digester body is arranged in a three - stage structure; specifically, the digester body includes a first - stage digestion layer, a second - stage digestion layer, and a third - stage digestion layer arranged in sequence from top to bottom, and quicklime passes through the first - stage digestion layer, the second - stage digestion layer, and the third - stage digestion layer in sequence; wherein the atomizing nozzles are arranged in the first - stage digestion layer.
[0008] In one embodiment, a plurality of the atomizing nozzles are distributed at a single - side position of the displacement path of the quicklime; or, a plurality of the atomizing nozzles are distributed at opposite - side positions of the displacement path of the quicklime.
[0009] In one embodiment, a plurality of the atomizing nozzles are arranged in a linear array along the extending direction of the displacement path of the quicklime.
[0010] In one embodiment, a spiral stirring shaft is movably connected inside the digester body, the spiral stirring shaft is connected to a rotation driving device, and under the driving action of the rotation driving device, the spiral stirring shaft makes a rotational movement to drive the quicklime and the digestion water to come into contact and mix with each other, and drives the quicklime to move along a preset path.
[0011] In one embodiment, the spiral stirring shaft includes a main spiral stirring shaft and a secondary spiral stirring shaft; the first end of the main spiral stirring shaft is connected to the rotation driving device, and the second end of the main spiral stirring shaft is connected with a driving wheel; the first end of the secondary spiral stirring shaft is movably connected to the digester body, the second end of the secondary spiral stirring shaft is connected with a driven wheel, and the driving wheel meshes with the driven wheel.
[0012] In one embodiment, the main spiral stirring shaft and the secondary spiral stirring shaft are arranged parallel to each other, and the stirring blades of the main spiral stirring shaft and the secondary spiral stirring shaft are arranged staggeredly.
[0013] In one embodiment, a quicklime feed hole and a gas - collecting hood are arranged on the top side of the digester body, and the gas - collecting hood is used to collect the water vapor generated during the digestion reaction of the quicklime and the digestion water; the other end of the gas - collecting hood is connected to a water storage tank through a reflux pipeline, the water - conveying end of the water storage tank is communicated with the water - conveying pipeline, and a water pump is arranged on the water - conveying pipeline.
[0014] In one embodiment, a filtering device is arranged on the reflux pipeline, and the filtering device is used to filter the quicklime particles in the water vapor.
[0015] To achieve the above object, the present utility model provides a quicklime digestion system, which includes the quicklime digestion device according to any one of the above.
[0016] The technical solution of the present utility model is to set an overflow valve on the pipeline branch connecting the water conveyance pipeline and the atomizing nozzle, and use the overflow valve to adjust the water pressure of the digestion water flowing to the atomizing nozzle in the pipeline branch, so as to reduce the dependence on the water pump. That is to say, even when the water pump is operating at a low load and the water pressure provided by it for the digestion water is not sufficient to fully atomize the digestion water, with the assistance of the overflow valve, the digestion water of the present utility model still has sufficient water pressure to pass through the atomizing nozzle for atomization treatment, so that quicklime and digestion water can be fully contacted, ensuring that the digestion effect meets the expectation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1 FIG. is a schematic structural diagram of an embodiment of the quicklime digestion device provided by the present utility model;
[0019] Figure 2 FIG. is the first internal top view of the first-stage digestion layer in an embodiment of the quicklime digestion device provided by the present utility model;
[0020] Figure 3 FIG. is the second internal top view of the first-stage digestion layer in an embodiment of the quicklime digestion device provided by the present utility model.
[0021] DESCRIPTION OF THE REFERENCE NUMERALS:
[0022] 1. Digester body; 101. First-stage digestion layer; 102. Second-stage digestion layer; 103. Third-stage digestion layer; 2. Water conveyance pipeline; 3. Atomizing nozzle; 4. Pipeline branch; 5. Overflow valve; 6. Rotary stirring shaft; 601. Main spiral stirring shaft; 602. Secondary spiral stirring shaft; 603. Stirring blade; 7. Rotary driving device; 701. Driving wheel; 702. Driven wheel; 8. Quicklime feeding hole; 9. Gas collection hood; 10. Return pipeline; 1001. Filter device; 11. Water storage tank; 12. Water pump;
[0023] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following will clearly and completely describe the technical solutions in the present utility model in conjunction with the accompanying drawings in the present utility model. Obviously, what is described is only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts belong to the scope of protection of the present utility model.
[0025] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.
[0026] In addition, it should be noted that the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0027] In the prior art, the atomization treatment of digestion water mainly relies on a water pump to provide a certain water pressure for the digestion water, and uses its water pressure as a power source to enable it to pass through an atomizing nozzle for atomization. However, when the water pump is operating at a low load, it will cause the water pressure provided by the water pump for the digestion water to be insufficient to fully atomize the digestion water when it passes through the atomizing nozzle; thus, the contact between quicklime and digestion water is insufficient, resulting in an unsatisfactory digestion effect.
[0028] To solve the above technical problems, the present utility model proposes a quicklime digestion device.
[0029] Please refer to Figures 1-3 , in an embodiment of the present utility model, the quicklime digestion device includes a digestion device body 1 and a water delivery pipe 2, wherein the water delivery pipe 2 is used to deliver digestion water to the digestion device body 1; a plurality of atomizing nozzles 3 are provided inside the digestion device body 1, and the water delivery pipe 2 is connected to the atomizing nozzles 3 through a pipeline branch 4; an overflow valve 5 is provided on each pipeline branch 4, and the overflow valve 5 is used to adjust the water pressure of the digestion water flowing into the atomizing nozzles 3 in the pipeline branch 4.
[0030] In the technical solution of this embodiment, an overflow valve 5 is provided on the pipeline branch 4 connecting the water delivery pipeline 2 and the atomizing nozzle 3. The overflow valve 5 is used to adjust the water pressure of the digestion water flowing to the atomizing nozzle 3 in the pipeline branch 4, so as to reduce the dependence on the water pump. That is to say, even when the water pump is operating at a low load and the water pressure provided by it for the digestion water is not sufficient to fully atomize the digestion water, in this embodiment, with the assistance of the overflow valve 5, the digestion water still has sufficient water pressure to be atomized through the atomizing nozzle 3, so that quicklime and digestion water can be fully contacted, ensuring that the digestion effect meets the expectation.
[0031] It should be noted that the above overflow valve 5 is a self-operating pressure regulating valve, and its main components include a main valve core, a spring, an adjusting bolt, etc. (not shown in the drawings). The automatic adjustment of the outlet pressure is realized by using the free movement of the main valve core. Its working principle is: when the outlet pressure increases, the pressure acts on the lower part of the main valve core, overcoming the spring force to raise the main valve core, thereby reducing the flow rate and lowering the outlet pressure; when the outlet pressure decreases, the spring force overcomes the pressure to press down the main valve core, increasing the flow rate and raising the outlet pressure. In this way, the free movement of the main valve core can automatically adjust and stabilize the system outlet pressure. The purpose of adjusting the water pressure of the digestion water flowing to the atomizing nozzle 3 in the pipeline branch 4 can be achieved through the above overflow valve 5. Since the above overflow valve 5 belongs to the prior art, this application will not elaborate on it in detail.
[0032] Specifically, referring to the appendix Figure 1 , the digester body 1 is arranged in a three-stage structure; specifically, the digester body 1 includes a first-stage digestion layer 101, a second-stage digestion layer 102, and a third-stage digestion layer 103 arranged in sequence from top to bottom. Quicklime passes through the first-stage digestion layer 101, the second-stage digestion layer 102, and the third-stage digestion layer 103 in sequence; among them, the atomizing nozzle 3 is arranged in the first-stage digestion layer 101. With such a setting, the digester body 1 with a three-stage structure, due to the different calcium contents of each batch of quicklime and slightly different activity degrees, the digestion reaction processes are also different. By respectively adjusting the operations of the first-stage digestion layer 101, the second-stage digestion layer 102, and the third-stage digestion layer 103, it is possible to meet the complete digestion reaction of quicklime for different calcium contents and activity degrees of quicklime. Among them, since the digester body 1 with a three-stage structure belongs to the prior art, this application will not elaborate on its specific structure in detail.
[0033] Furthermore, as shown in the appendix Figure 2 , a number of atomizing nozzles 3 are distributed on one side of the displacement path of quicklime; or, as shown in the appendix Figure 3As shown, a number of atomizing nozzles 3 are distributed on opposite sides of the displacement path of quicklime. With such an arrangement, considering that a quicklime feed hole 8 and a gas collecting hood 9 are generally provided at the top side of the digester body 1, that is, the remaining space at the top side of the digester body 1 is narrow, which is not conducive to further installing atomizing nozzles 3 on its top side. Based on the above considerations, in this embodiment, the atomizing nozzles 3 are arranged on one side or opposite sides of the quicklime displacement path. It can be understood that compared with arranging the atomizing nozzles 3 on one side of the quicklime displacement path, arranging the atomizing nozzles 3 on opposite sides of the quicklime displacement path increases the number of atomizing nozzles 3 arranged, which is beneficial to improving the full contact between quicklime and digestion water and further ensuring that the digestion effect meets the expectations. In this embodiment, four atomizing nozzles 3 are arranged on one side.
[0034] It can be understood that since the digester body 1 is arranged in a three-stage structure as mentioned above, and the atomizing nozzles 3 are arranged in the first-stage digestion layer 101, those skilled in the art can thus infer that in this embodiment, the atomizing nozzles 3 are distributed on one side or opposite sides of the quicklime displacement path located in the first-stage digestion layer 101. The following embodiments are also applicable to the above situation, and the present application will not repeat it.
[0035] Furthermore, a number of atomizing nozzles 3 are arranged in a linear array along the extending direction of the quicklime displacement path. With such an arrangement, it is ensured that quicklime can come into contact with atomized digestion water during the movement process, which is beneficial to improving the full contact between quicklime and digestion water and further ensuring that the digestion effect meets the expectations.
[0036] As a preferred solution of the above embodiment, referring to the appendix Figures 2-3 , a spiral stirring shaft 6 is movably connected inside the digester body 1. The spiral stirring shaft 6 is connected to a rotation driving device 7. Under the driving action of the rotation driving device 7, the spiral stirring shaft 6 performs a rotational movement to drive quicklime to come into contact and mix with digestion water and drive quicklime to move along a preset path. With such an arrangement, the spiral stirring shaft 6 is used to drive quicklime to move along a preset path, so that quicklime can sequentially pass through the first-stage digestion layer 101, the second-stage digestion layer 102, and the third-stage digestion layer 103, and the structure is simple and practical.
[0037] Among them, there are many structural forms of the spiral stirring shaft 6. In the embodiment of the present application, the spiral stirring shaft 6 adopts a double-shaft form, that is, the spiral stirring shaft 6 includes a main spiral stirring shaft 601 and a secondary spiral stirring shaft 602; the first end of the main spiral stirring shaft 601 is connected to the rotary driving device 7, and the second end of the main spiral stirring shaft 601 is connected with a driving wheel 701; the first end of the secondary spiral stirring shaft 602 is movably connected to the digester body 1, and the second end of the secondary spiral stirring shaft 602 is connected with a driven wheel 702, and the driving wheel 701 and the driven wheel 702 are meshed and matched. With such a setting, the mutual linkage between the main spiral stirring shaft 601 and the secondary spiral stirring shaft 602 is realized by means of gear transmission, and the structure is simple and practical. And only a single rotary driving device 7 needs to be set, which is beneficial to the enterprise's energy conservation and environmental protection. In this embodiment, the rotary driving device 7 can be selected as a variable-frequency rotary motor, and the different rotation speeds of the spiral stirring shaft 6 can be realized by adjusting the frequency, so that the operator can adjust the stirring process of quicklime and digestion water according to the digestion situation.
[0038] Furthermore, the main spiral stirring shaft 601 and the secondary spiral stirring shaft 602 are arranged parallel to each other, and the stirring blades 603 of the main spiral stirring shaft 601 and the secondary spiral stirring shaft 602 are arranged staggeredly. With such a setting, since the main bolt stirring shaft and the secondary spiral stirring shaft 602 are driven by gears with each other, the rotation directions of the main spiral stirring shaft 601 and the secondary spiral stirring shaft 602 are opposite. In this way, when the two perform rotational motion, the stirring blades 603 between them can play a role of mutual cleaning, preventing quicklime from caking on the stirring blades 603 and affecting the digestion effect.
[0039] As a preferred solution of the above embodiment, refer to the attached Figure 1 , a quicklime feed hole 8 and a gas collecting hood 9 are arranged on the top side of the digester body 1, and the gas collecting hood 9 is used for collecting the water vapor generated during the digestion reaction of quicklime and digestion water; the other end of the gas collecting hood 9 is connected to a water storage tank 11 through a return pipeline 10, and the water delivery end of the water storage tank 11 is communicated with the water delivery pipeline 2, and a water pump 12 is arranged on the water delivery pipeline 2. With such a setting, considering that a large amount of water vapor mixed with quicklime particles will be generated during the digestion of quicklime, the water vapor is collected by the gas collecting hood 9 and re-transported to the water storage tank 11 through the return pipeline 10 for reuse as digestion water, which is energy-saving and environmentally friendly. Among them, a water pump 12 is arranged on the water delivery pipeline 2, and the water pump is used as a power source to transport the digestion water in the water storage tank 11 to the digester body 1 for digestion reaction.
[0040] Furthermore, a filtering device 1001 is provided on the reflux pipeline 10, and the filtering device 1001 is used to filter the quicklime particles in the water vapor. With such an arrangement, considering that a large number of quicklime particles are mixed in the water vapor, in order to prevent the quicklime particles from being discharged into the water storage tank 11 along with the water vapor, it is necessary to provide a filtering device 1001 on the reflux pipeline 10 to filter the quicklime particles in the water vapor by using the filtering device 1001.
[0041] This embodiment also discloses a quicklime digestion system, including the quicklime digestion device of any one of the above embodiments. For the specific structure of the quicklime digestion device, reference may be made to the above embodiments. Since this quicklime digestion system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.
[0042] It should be noted that the other contents of the quicklime digestion device and the quicklime digestion system disclosed by the present utility model are prior art and will not be elaborated here.
[0043] The above are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All those that are directly / indirectly applied in other related technical fields of the present utility model are included in the patent protection scope of the present utility model.
Claims
1. A quicklime digestion device, characterized in that: It comprises a digester body and a water delivery pipeline, wherein the water delivery pipeline is used to deliver digested water to the digester body; a plurality of atomizing nozzles are arranged inside the digester body, and the water delivery pipeline is connected with the atomizing nozzles through a pipeline branch; each section of the pipeline branch is provided with an overflow valve, and the overflow valve is used to adjust the water pressure of the digested water in the pipeline branch flowing to the atomizing nozzle; The relief valve is a self-operating pressure regulating valve, the main components of which are a main valve core, a spring and an adjusting bolt, and the outlet pressure is automatically adjusted by utilizing the free movement of the main valve core; Its working principle is: when the outlet pressure increases, the pressure acts on the main valve core, overcoming the spring force to raise the main valve core, thereby reducing the flow and lowering the outlet pressure; When the outlet pressure drops, the spring force overcomes the pressure to press down the main valve core, increasing the flow rate and causing the outlet pressure to rise.
2. The quicklime digestion device according to claim 1, characterized in that: The digester body adopts a three-stage structure; specifically, the digester body includes a first-stage digestion layer, a second-stage digestion layer and a third-stage digestion layer arranged in sequence from top to bottom, and quicklime passes through the first-stage digestion layer, the second-stage digestion layer and the third-stage digestion layer in sequence; wherein the atomizing nozzle is arranged in the first-stage digestion layer.
3. The quicklime digestion device according to claim 1, characterized in that: A plurality of the atomizing nozzles are distributed on one side of the quicklime displacement path; or, a plurality of the atomizing nozzles are distributed on two opposite sides of the quicklime displacement path.
4. The quicklime digestion device according to claim 1, characterized in that: A plurality of atomizing nozzles are arranged in a linear array along the extension direction of the quicklime displacement path.
5. The quicklime digestion device according to claim 1, characterized in that: A spiral stirring shaft is movably connected inside the digester body, and the spiral stirring shaft is connected to a rotary driving device. Under the driving action of the rotary driving device, the spiral stirring shaft rotates to drive the quicklime and the digestion water to contact and mix with each other, and drive the quicklime to move along a preset path.
6. The quicklime digestion device according to claim 5, characterized in that: The spiral stirring shaft includes a main spiral stirring shaft and a secondary spiral stirring shaft; the first end of the main spiral stirring shaft is connected to the rotation drive device, and the second end of the main spiral stirring shaft is connected to a driving wheel; the first end of the secondary spiral stirring shaft is movably connected to the digester body, and the second end of the secondary spiral stirring shaft is connected to a driven wheel, and the driving wheel is meshed with the driven wheel.
7. The quicklime digestion device according to claim 6, characterized in that: The main spiral stirring shaft and the secondary spiral stirring shaft are arranged parallel to each other, and the stirring blades of the main spiral stirring shaft and the secondary spiral stirring shaft are arranged in a staggered manner.
8. The quicklime digestion device according to claim 1, characterized in that: The top side of the digester body is provided with a quicklime feed hole and an air collecting hood, and the air collecting hood is used to collect water vapor generated during the digestion reaction between the quicklime and the digested water; the other end of the air collecting hood is connected to a water storage tank through a reflux pipe, and the water delivery end of the water storage tank is interconnected with the water delivery pipe, and a water pump is provided on the water delivery pipe.
9. The quicklime digestion device according to claim 8, characterized in that: The reflux pipeline is provided with a filtering device, and the filtering device is used to filter quicklime particles in the water vapor.
10. A quicklime digestion system, characterized in that: It comprises the quicklime slaking device as described in any one of claims 1 to 9.