Double-channel slurry preheating system
By adding two sets of heat exchange pipelines to the slurry storage equipment, the hot air in the spray drying tower and the cooling water of the sintering equipment are used to preheat the slurry, which solves the problems of low drying efficiency and high powder moisture caused by slurry temperature difference, and realizes resource recycling and production efficiency improvement.
Patent Information
- Application Number
- CN202423239702.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing technologies, the temperature difference between the slurry and the hot air is too large, resulting in problems such as low drying efficiency and high moisture content in the powder.
Two sets of heat exchange pipelines are added to the slurry storage equipment. The hot air in the spray drying tower and the cooling water of the sintering equipment are used to preheat the slurry. The slurry is heated through the first heat exchange pipeline and the second heat exchange pipeline respectively, raising the slurry temperature to 85℃±5℃.
It improves drying efficiency, reduces the moisture content of powder, enables resource recycling, reduces production costs, and enhances production efficiency.
Smart Images
Figure CN223636679U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the ceramic tile production equipment technical field, concretely relates to a kind of double-channel slurry preheating system. BACKGROUND
[0002] In the process of ceramic production, the slurry such as mud is usually dried to form powder particles. The spray drying tower is a device used for drying slurry such as mud in the production of ceramics. Its principle is to introduce hot air into the spray drying tower, and the mud is sprayed upward from the bottom of the spray drying tower through a nozzle. The hot air at high temperature contacts the mud, thereby drying the mud into powder particles.
[0003] The slurry such as mud is usually stored in a slurry pool or a slurry tank. The temperature of the slurry is usually room temperature, which changes with the ambient temperature. In the prior art, the slurry at room temperature is directly input into a spray gun arranged around the spray drying tower. However, the slurry is sprayed out through the nozzle of the spray gun. Since the temperature of the hot air introduced into the spray drying tower is as high as 650-700℃, and the temperature of the slurry is in the range of several degrees to 30 degrees, the temperature difference between the two is too large. In the drying process, most of the heat of the hot air is actually used to heat the slurry. Therefore, the prior art has the defects of low drying efficiency and high moisture content of the dried powder. SUMMARY
[0004] The utility model aims to provide a double-channel slurry preheating system to solve the problems raised in the background.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a double-channel slurry preheating system, comprising a slurry storage device, a spray drying tower, and an air extraction device. The suction port of the air extraction device extends into the spray drying tower. The slurry storage device comprises a body, a storage cavity arranged inside the body for containing slurry, a discharge port arranged on the body and communicating with the storage cavity, and a first heat exchange pipeline arranged in the storage cavity. The input end of the first heat exchange pipeline is connected to the air outlet of the air extraction device, and the discharge port is connected to the spray gun of the spray drying tower.
[0006] In some embodiments, the double-channel slurry preheating system further comprises a sintering device, a powder conveying device, and a forming device. The powder conveying device cooperates with the discharge end of the spray drying tower to receive the powder output from the spray drying tower and convey the powder to the forming device. The forming device uses the powder to form a ceramic tile blank. The sintering device is used to sinter the ceramic tile blank to form a finished ceramic tile. The sintering device is provided with a drainage pipeline. The slurry storage device further comprises a second heat exchange pipeline. The output end of the drainage pipeline is connected to the input end of the second heat exchange pipeline.
[0007] In some embodiments, the first heat exchange pipeline is a folded pipe.
[0008] In some embodiments, the second heat exchange pipeline is a folded pipe.
[0009] In some embodiments, the first heat exchange pipeline and the second heat exchange pipeline have the same extension direction.
[0010] In some embodiments, the first heat exchange pipeline and the second heat exchange pipeline are staggered.
[0011] In some embodiments, the double-channel slurry preheating system further comprises a suction pump connected to the drain pipeline and the second heat exchange pipeline respectively, for pumping the hot water in the drain pipeline into the second heat exchange pipeline.
[0012] In some embodiments, the air suction device comprises a fan, a suction pipeline and an output pipeline, the fan is connected to the suction pipeline and the output pipeline respectively, the end of the suction pipeline away from the fan extends into the spray drying tower, and the end of the output pipeline away from the fan is connected to the input end of the first heat exchange pipeline.
[0013] The present application has the following advantages:
[0014] The present application provides a double-channel slurry preheating system with a novel structure, which only adds two sets of heat exchange pipelines to the original slurry storage device, and has low assembly difficulty and low cost.
[0015] The first heat exchange pipeline effectively utilizes the hot air in the spray drying tower after being sucked out by the air suction device, the temperature of the hot air is 90-100℃, which not only realizes resource recycling, but also effectively heats the slurry in the slurry storage device, effectively improving the temperature of the slurry entering the spray gun.
[0016] The second heat exchange pipeline effectively utilizes the hot water generated after the cooling work of the sintering device, which is discharged through the discharge pipeline, the temperature of the hot water is about 100℃, which not only realizes resource recycling, but also effectively heats the slurry in the slurry storage device, effectively improving the temperature of the slurry entering the spray gun.
[0017] The first heat exchange pipeline and the second heat exchange pipeline are used to heat the slurry at the same time, which can quickly and effectively preheat the slurry, so that the temperature of the slurry can reach the range of 85℃±5℃, so that the hot air in the spray drying tower can quickly dry the slurry, greatly improving the drying efficiency of the drying spray tower, and at the same time, the moisture content of the powder can meet the requirements.
[0018] The system can achieve the purposes of energy saving and emission reduction, resource recycling, reducing production cost and improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 The overall system framework of the present application.
[0020] Fig. 2 The simplified structure diagram of the slurry storage device of the present application.
[0021] Fig. 3 The structure diagram of the cooperation of the spray drying tower and the air extraction equipment of the present application.
[0022] In the figure: 1-slurry storage device; 2-spray drying tower; 3-air extraction equipment; 4-powder transportation equipment; 5-molding equipment; 6-sintering equipment; 11-body; 12-containing cavity; 13-discharge port; 14-first heat exchange pipeline; 15-second heat exchange pipeline; 21-tower body; 22-lance; 23-air inlet pipeline; 31-fan; 32-air extraction pipeline; 33-output pipeline. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0024] Please refer to Figs. 1-3 The present application provides the following technical solutions:
[0025] A double-channel slurry preheating system, comprising a slurry storage device 1, a spray drying tower 2 and an air extraction equipment 3. The spray drying tower 2 is an existing device, which generally comprises a tower body 21, an air inlet pipeline 23 and a lance 22, the air inlet pipeline 23 is installed at the top of the tower body 21 and connected with a hot gas supply equipment such as a hot blast stove, the temperature of the hot air entering the spray drying tower 2 is as high as 650-700℃. The suction port of the air extraction equipment 3 extends into the spray drying tower 2 and is located below the lance 22.
[0026] The slurry storage device 1 comprises a body 11, a containing cavity 12 arranged inside the body 11 and used for containing slurry, a discharge port 13 arranged on the body 11 and communicated with the containing cavity 12, and a first heat exchange pipeline 14 arranged in the containing cavity 12, the input end of the first heat exchange pipeline 14 is connected with the air outlet of the air extraction equipment 3, and the discharge port 13 is connected with the lance 22 of the spray drying tower 2.
[0027] The air extraction device 3 comprises a fan 31, an air extraction pipeline 32 and an output pipeline 33, the fan 31 is connected with the air extraction pipeline 32 and the output pipeline 33 respectively, the air extraction pipeline 32 extends into the spray drying tower 2 at the end far away from the fan 31, and the output pipeline 33 is connected with the input end of the first heat exchange pipeline 14 at the end far away from the fan 31.
[0028] The slurry storage device 1 can be all devices on the market that can be used to store and carry slurry such as mud, including but not limited to mud tanks, mud pools and the like.
[0029] The first heat exchange pipeline 14 is a folded pipeline. The specific folding mode and folding times can be adjusted according to the actual size of the slurry storage device 1.
[0030] In order to further improve the temperature of the slurry, as preferred, the double-channel slurry preheating system of the embodiment further comprises a sintering device 6, a powder conveying device 4 and a forming device 5, the powder conveying device 4 is matched with the discharge end of the spray drying tower 2, used to receive the powder output from the spray drying tower 2 and transport the powder to the forming device 5, the forming device 5 uses the powder to form a ceramic tile blank, and the sintering device 6 is used to sinter the ceramic tile blank to form a finished ceramic tile. The sintering device 6 is generally a roller kiln, and the internal flue gas temperature is as high as several hundred degrees. The sintering device 6 is provided with a drainage pipeline, and the slurry storage device 1 further comprises a second heat exchange pipeline 15, the output end of the drainage pipeline is connected with the input end of the second heat exchange pipeline 15. The drainage pipeline can be connected with a cooling pipeline used for cooling in the sintering device 6 to realize cyclic use.
[0031] Since the production equipment and process flow of ceramic tiles are prior art, the embodiment only shows part of the structure, and other unshown devices and structures are prior art, which will not be described in detail here, such as a drying device after the forming device 5.
[0032] The second heat exchange pipeline 15 is a folded pipeline.
[0033] The extension directions of the first heat exchange pipeline 14 and the second heat exchange pipeline 15 are completely consistent, of course, the first heat exchange pipeline 14 and the second heat exchange pipeline 15 are staggered.
[0034] The embodiment shows that the first heat exchange pipeline 14 and the second heat exchange pipeline 15 are staggered.
[0035] In order to realize the transportation of hot water in the drainage pipeline, as preferred, the double-channel slurry preheating system further comprises a suction pump, the suction pump is connected with the drainage pipeline and the second heat exchange pipeline 15 respectively, used to pump the hot water in the drainage pipeline into the second heat exchange pipeline 15.
[0036] Further preferably, the suction pump can be a plunger pump or a hydraulic pump.
[0037] The double-channel slurry preheating system has at least the following advantages relative to the prior art.
[0038] The double-channel slurry preheating system with a novel structure has low assembly difficulty and low cost, and only two sets of heat exchange pipelines are additionally arranged on the basis of the original slurry storage device 1.
[0039] The first heat exchange pipeline 14 effectively utilizes the hot air in the spray drying tower 2 sucked out by the air extraction device 3, the temperature of the hot air is 90-100 DEG C, not only the resource reuse can be realized, but also the slurry in the slurry storage device 1 can be effectively heated, and the temperature of the slurry entering the spray gun 22 can be effectively improved.
[0040] The second heat exchange pipeline 15 effectively utilizes the hot water generated after the cooling work of the sintering device 6, the hot water is discharged through a discharge pipeline, the temperature of the hot water is about 100 DEG C, not only the resource reuse can be realized, but also the slurry in the slurry storage device 1 can be effectively heated, and the temperature of the slurry entering the spray gun 22 can be effectively improved.
[0041] The slurry is heated by the first heat exchange pipeline 14 and the second heat exchange pipeline 15, the slurry can be quickly and effectively preheated, the temperature of the slurry can reach the range of 85 DEG C ± 5 DEG C, in this way, the hot air in the spray drying tower 2 can quickly dry the slurry, the drying efficiency of the spray drying tower is greatly improved, and the water content of the output powder can be ensured to be 7% ± 0.5%, the requirement is met, and the powder produced by the spray drying tower can be directly used for producing ceramic tile blanks, and the powder needs not to be secondarily dried.
[0042] The system can achieve the purposes of energy saving and emission reduction, resource recycling, reducing production cost and improving production efficiency.
[0043] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A two-pass slurry preheating system comprising a slurry storage device (1), a spray drying tower (2) and an extraction device (3), characterized in that, The suction port of the air suction device (3) extends into the spray drying tower (2), the slurry storage device (1) comprises a body (11), a containing cavity (12) arranged inside the body (11) and used for containing slurry, a discharge port (13) arranged on the body (11) and communicating with the containing cavity (12), and a first heat exchange pipeline (14) arranged in the containing cavity (12), an input end of the first heat exchange pipeline (14) is connected with an air outlet of the air suction device (3), and the discharge port (13) is connected with a spray gun (22) of the spray drying tower (2).
2. The dual pass slurry preheat system of claim 1, wherein, Further comprising a sintering device (6), a powder conveying device (4) and a forming device (5), the powder conveying device (4) is matched with a discharge end of the spray drying tower (2) and is used for receiving powder output from the spray drying tower (2) and conveying the powder to the forming device (5), the forming device (5) is used for forming a ceramic tile blank by using the powder, and the sintering device (6) is used for sintering the ceramic tile blank to form a finished ceramic tile, the sintering device (6) is provided with a drainage pipeline, and the slurry storage device (1) further comprises a second heat exchange pipeline (15), an output end of the drainage pipeline is connected with an input end of the second heat exchange pipeline (15).
3. The dual pass slurry preheat system of claim 2, wherein, The first heat exchange pipeline (14) is a folded pipe.
4. The dual pass slurry preheat system of claim 3, wherein, The second heat exchange pipeline (15) is a folded pipe.
5. The dual pass slurry preheat system of claim 4, wherein, The extension directions of the first heat exchange pipeline (14) and the second heat exchange pipeline (15) are completely consistent.
6. The dual pass slurry preheat system of claim 4, wherein, The first heat exchange pipeline (14) and the second heat exchange pipeline (15) are arranged alternately.
7. The dual pass slurry preheat system of any of claims 2-6, wherein, Further comprising a suction pump connected with the drainage pipeline and the second heat exchange pipeline (15) respectively, and used for pumping hot water in the drainage pipeline into the second heat exchange pipeline (15).
8. The dual passage slurry preheat system of any one of claims 1-6, wherein, The air suction device (3) comprises a fan (31), an air suction pipeline (32) and an output pipeline (33), the fan (31) is connected with the air suction pipeline (32) and the output pipeline (33) respectively, one end of the air suction pipeline (32) away from the fan (31) extends into the spray drying tower (2), and one end of the output pipeline (33) away from the fan (31) is connected with an input end of the first heat exchange pipeline (14).