Drying system for high-humidity and high-viscosity materials

Abstract

The utility model discloses a drying system for high-humidity and high-viscosity materials, and relates to the technical field of material drying. The drying system for the high-humidity and high-viscosity materials comprises an airflow drying module and a boiling drying module which are sequentially arranged and communicate with each other, the airflow drying module is provided with a feeding port used for inputting to-be-dried materials, and the boiling drying module is provided with a discharging port used for outputting the dried materials. According to the drying system, the airflow drying module and the boiling drying module on the drying system can be matched with each other and smoothly convey and thoroughly dry the high-humidity and high-viscosity materials, the drying quality and the drying efficiency of the materials can be improved, and the drying energy consumption can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of material drying, in particular to a drying system for high-moisture and high-viscosity materials. BACKGROUND

[0002] At present, the drying methods for materials usually include fluidized bed, tube bundle, flash evaporation, air flow, paddle, drum, etc. The above-mentioned methods have good drying effects on ordinary materials, but for high-moisture and high-viscosity materials, due to the characteristics of high moisture content, high viscosity, difficulty in drying, easy to form lumps, and difficult to transport, etc., the use of the above-mentioned drying methods to dry high-moisture and high-viscosity materials will cause the following problems:

[0003] Firstly, due to the high viscosity of high-moisture and high-viscosity materials, the materials are easy to adhere to the drying equipment or the conveying equipment, which not only affects the subsequent drying or conveying of the materials, but also may cause damage to the equipment; secondly, due to the easy lumping of high-moisture and high-viscosity materials, the drying is uneven, and there is a situation that the surface of the materials has been dried, but the moisture inside cannot be removed, which greatly affects the quality of the materials; thirdly, due to the difficulty in drying of high-moisture and high-viscosity materials, in order to reduce it to the target moisture value, the drying equipment needs to be maintained at a higher drying temperature, which greatly destroys the nutritional ingredients in the materials; fourthly, due to the high moisture content of high-moisture and high-viscosity materials, in order to reduce it to the target moisture value, the drying equipment needs to run for a longer time, which greatly increases the drying energy consumption; fifthly, due to the high moisture content of high-moisture and high-viscosity materials, in order to reduce it to the target moisture value, the size of the drying equipment needs to be designed larger, which greatly increases the floor area occupied by the equipment. CONTENT OF THE INVENTION

[0004] In order to overcome the shortcomings of the prior art, the present application provides a drying system for high-moisture and high-viscosity materials.

[0005] The drying system provided by the present application adopts the following technical solution:

[0006] A drying system for high-moisture and high-viscosity materials, comprising a gas flow drying module and a boiling drying module arranged in sequence and in communication with each other, a feeding port for inputting materials to be dried is formed on the gas flow drying module, and a discharging port for outputting dried materials is formed on the boiling drying module.

[0007] By adopting the above-mentioned technical solution, the high-moisture and high-viscosity materials can be smoothly conveyed and dried under the cooperation of the gas flow drying module and the boiling drying module, which not only improves the drying quality and efficiency of the materials, but also saves the drying energy consumption.

[0008] In one specific implementation, the air flow drying module comprises a drying tube arranged vertically, a first hot air assembly connected to a lower end of the drying tube, and a feeding port arranged on the drying tube, wherein a first scattering assembly is arranged at the feeding port.

[0009] By using the above technical solution, the vertically arranged drying tube can greatly reduce the floor area of the system, and the high-temperature hot air flow output by the first hot air assembly can gradually lift and dry the material during upward flow, which not only facilitates the conveying of the material, but also continuously dries the material during the lifting of the material, thereby achieving good drying effect. Meanwhile, the first scattering assembly can scatter the material entering the drying tube, thereby further improving the drying effect of the material.

[0010] In one specific implementation, the fluidized bed drying module comprises a fluidized bed and a second hot air assembly connected to one end of the fluidized bed close to the air flow drying module, and a discharging port arranged at the bottom of the fluidized bed.

[0011] By using the above technical solution, the material preliminarily dried by the air flow drying module can be uniformly and completely dried by the cooperation of the fluidized bed and the second hot air assembly, thereby further improving the drying effect of the material.

[0012] In one specific implementation, the fluidized bed drying module further comprises a second scattering assembly and a first air hammer arranged on the fluidized bed, and the second scattering assembly is connected to the drying tube and the fluidized bed respectively.

[0013] By using the above technical solution, the second scattering assembly can scatter the material input into the fluidized bed, thereby improving the drying effect of the material by the fluidized bed. Meanwhile, the first air hammer can vibrate and clean the material remaining on the wall of the fluidized bed, thereby preventing the material from adhering to the wall of the fluidized bed.

[0014] In one specific implementation, the fluidized bed is further connected to a cooling assembly at an end away from the air flow drying module.

[0015] By using the above technical solution, the material can be cooled by the cooling assembly after drying, thereby avoiding that the output temperature of the material is too high to affect the subsequent process.

[0016] In one specific implementation, the upper part of the fluidized bed is further provided with a first exhaust port, and the first exhaust port is connected to the first hot air assembly.

[0017] By using the above technical solution, the high-temperature hot air output by the fluidized bed can be recycled to the first hot air assembly, thereby realizing air recycling and effectively saving the drying energy consumption.

[0018] In an embodiment, the fluidized bed is provided with a dust removal assembly, which is arranged close to the first air outlet.

[0019] By using the above technical scheme, the dust removal assembly can filter the hot air output by the fluidized bed to improve the cleanliness of the hot air and avoid pollution of the material during reuse.

[0020] In an embodiment, the drying system further comprises a discharging module arranged between the airflow drying module and the fluidized drying module, the discharging module comprising a discharger and a second air hammer arranged on the discharger, the discharger being in communication with the drying pipe and the fluidized bed respectively.

[0021] By using the above technical scheme, the material can be smoothly transferred to the fluidized bed through the discharger, effectively improving the conveying efficiency of the material; during the transfer process, the second air hammer can vibrate and clean the material remaining on the inner wall of the discharger, preventing the material from adhering to the inner wall of the discharger.

[0022] In an embodiment, the discharging module further comprises a second air outlet arranged on the discharger and an exhaust assembly in communication with the second air outlet.

[0023] By using the above technical scheme, the airflow drying module and the fluidized drying module can both realize exhaust gas emission through the second air outlet and the exhaust assembly, without the need to separately arrange exhausts for the airflow drying module and the fluidized drying module, thereby improving the structural compactness of the system.

[0024] In an embodiment, the first hot air assembly and the drying pipe are connected through a first pipeline, and the second hot air assembly and the fluidized bed are connected through a second pipeline, the first pipeline and the second pipeline being provided with first temperature measuring assemblies.

[0025] By using the above technical scheme, the output temperatures of the first hot air assembly and the second hot air assembly can be effectively monitored through the first temperature measuring assemblies, so that the operator can timely adjust the drying temperature according to the drying conditions.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] High-humidity and high-viscosity materials can be smoothly conveyed and dried under the cooperation of the airflow drying module and the fluidized drying module, which not only improves the drying quality and efficiency of the material, but also saves drying energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of a drying system according to an embodiment of the present application.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, feed inlet; 2, drying tube; 3, first hot air assembly; 31, first heater; 32, first fan; 4, discharge outlet; 5, fluidized bed; 6, second hot air assembly; 61, second heater; 62, second fan; 7, first air hammer; 8, cooling assembly; 9, first exhaust outlet; 10, first pipeline; 11, dust removal assembly; 12, discharger; 13, second air hammer; 14, second exhaust outlet; 15, exhaust assembly; 151, fourth fan; 152, tail gas processor; 16, drainage assembly; 161, water collecting tank; 162, valve; 163, water pump; 17, rotary valve; 18, first scattering assembly; 19, second scattering assembly; 20, first temperature measuring assembly; 21, second pipeline; 22, second temperature measuring assembly. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the accompanying drawings.

[0032] Referring to Figure 1 shown, wherein a high-moisture and high-viscosity material drying system is shown, comprising a pneumatic drying module and a fluidized drying module arranged in sequence and communicated with each other, the pneumatic drying module is provided with a feed inlet 1 for inputting the material to be dried, and the fluidized drying module is provided with a discharge outlet 4 for outputting the dried material. Wherein, the pneumatic drying module comprises a vertically arranged drying tube 2, a first hot air assembly 3 communicated with the lower end of the drying tube 2, the feed inlet 1 is arranged on the drying tube 2, the fluidized drying module comprises a fluidized bed 5, a second hot air assembly 6 communicated with the front end of the fluidized bed 5, and the discharge outlet 4 is arranged at the bottom of the fluidized bed 5, and a rotary valve 17 is arranged on the discharge outlet 4, which is a rotary feeding valve in the prior art and is used for material output.

[0033] When drying high-moisture and high-viscosity material, the material is first input into the drying tube 2 from the feed inlet 1, the first hot air assembly 3 outputs hot air into the drying tube 2, the hot air gradually lifts and dries the material in the process of flowing upward, then the preliminarily dried material enters the fluidized bed 5, the second hot air assembly 6 performs secondary drying on the material in the fluidized bed 5, and then the dried material is output from the rotary valve 17 of the discharge outlet 4.

[0034] In this way, by matching the drying pipe 2 and the boiling bed 5, the high-moisture and high-viscosity material can be smoothly conveyed and dried, which can not only improve the drying quality and drying efficiency of the material, but also save the drying energy consumption, and the vertically arranged drying pipe 2 can greatly reduce the floor area of the system; at the same time, since the material can be continuously dried during the conveying process in the drying pipe 2, the system does not need to be maintained at a high drying temperature, and the nutritional ingredients in the material will not be destroyed; and the material is dried synchronously by the drying pipe 2 and the boiling bed 5 during the conveying process, the drying efficiency is high, the system does not need to run for a long time, and the energy consumption is saved.

[0035] In the embodiment, the first dispersing assembly 18 is also arranged at the feeding port 1. The first dispersing assembly 18 is a crusher in the prior art, and the specific structure and principle thereof will not be described herein. The first dispersing assembly 18 can disperse the material entering the drying pipe 2, further improving the drying effect of the material.

[0036] In the embodiment, the first hot air assembly 3 includes a first heater 31 and a first fan 32 which are in communication with each other, the first heater 31 is in communication with the drying pipe 2, and the air output by the first fan 32 is heated by the first heater 31 and sent into the drying pipe 2; the second hot air assembly 6 includes a second heater 61 and a second fan 62 which are in communication with each other, and the air output by the second fan 62 is heated by the second heater 61 and sent into the boiling bed 5.

[0037] The first heater 31 and the second heater 61 are both in the prior art, which include but are not limited to steam heat exchangers, flue gas heat exchangers, natural gas burners, electric pumps, etc., and the heat sources used by these devices include but are not limited to steam, biomass, coal, fuel oil, natural gas, electricity, etc.

[0038] In one of the embodiments, when the first heater 31 and the second heater 61 are steam heat exchangers, the drying system can also be provided with a drainage assembly 16 which is in communication with the first hot air assembly 3 and the second hot air assembly 6, respectively, and the drainage assembly 16 includes a water collecting tank 161, a valve 162 and a water pump 163 which are in communication with each other in sequence. The moisture generated by the steam heat exchange in the first hot air assembly 3 and the second hot air assembly 6 can be discharged and collected outside through the drainage assembly 16, so as to prevent too much moisture from remaining in the first hot air assembly 3 and the second hot air assembly 6 and affecting the hot air output effect of the two; at the same time, the collected moisture can be applied to other processes, so as to realize the reuse of waste water.

[0039] In the embodiment, the fluidized drying module further comprises a second scattering assembly 19 arranged on the fluidized bed 5 and a first air hammer 7, and the second scattering assembly 19 is communicated with the drying pipe 2 and the fluidized bed 5 respectively. The discharge port 4 is also provided with the first air hammer 7. The second scattering assembly 19 is a crusher in the prior art, and the first air hammer 7 is also in the prior art, and the specific structure and principle of the two are not described in detail. The second scattering assembly 19 can scatter the material input into the fluidized bed 5 to improve the drying effect of the fluidized bed 5 on the material; and the first air hammer 7 can vibrate and clean the material remaining on the bed wall of the fluidized bed 5 to prevent the material from adhering to the bed wall of the fluidized bed 5.

[0040] In the embodiment, the rear end of the fluidized bed 5 is also communicated with a cooling assembly 8, which is a third fan. The third fan can output cold air into the fluidized bed 5, so that the material can be cooled after drying, avoiding that the output temperature of the material is too high to affect the subsequent process.

[0041] In the embodiment, the upper part of the fluidized bed 5 is also provided with a first exhaust port 9, which is communicated with the first hot air assembly 3. The high-temperature hot air in the fluidized bed 5 can be circulated to the first hot air assembly 3 through the first exhaust port 9, realizing gas recycling and effectively saving drying energy consumption.

[0042] The fluidized bed 5 is also provided with a dust removal assembly 11 arranged close to the first exhaust port 9. The dust removal assembly 11 is a bag dust collector in the prior art, and the specific structure and principle are not described in detail. The dust removal assembly 11 can filter the hot air output from the fluidized bed 5 to improve the cleanliness of the hot air and avoid pollution of the material in the recycling process.

[0043] In the embodiment, the drying system further comprises a discharging module arranged between the pneumatic drying module and the fluidized drying module. The discharging module comprises a discharger 12 and a second air hammer 13 arranged on the discharger 12, and the discharger 12 is communicated with the drying pipe 2 and the fluidized bed 5 respectively. The discharger 12 and the second air hammer 13 are both in the prior art, and the specific structure and principle are not described in detail. The material can be smoothly transferred to the fluidized bed 5 through the discharger 12, effectively improving the conveying efficiency of the material; and in the transferring process, the second air hammer 13 can vibrate and clean the material remaining on the inner wall of the discharger 12 to prevent the material from adhering to the inner wall of the discharger 12.

[0044] In the embodiment, the discharging module further comprises a second air outlet 14 formed in the upper portion of the discharger 12 and an air exhaust assembly 15 communicated with the second air outlet 14. The air exhaust assembly 15 comprises a fourth fan 151 and a tail gas processor 152 communicated with each other. The tail gas processor 152 is a tail gas purifier in the prior art, and its specific structure and principle are not described herein. The exhaust gas generated by the airflow drying module and the boiling drying module can be discharged through the second air outlet 14 and the air exhaust assembly 15, and it is not necessary to separately provide air exhausts for the airflow drying module and the boiling drying module, thereby effectively improving the compactness of the system.

[0045] In the embodiment, the first hot air assembly 3 and the drying pipe 2 are connected through a first pipeline 10, and the second hot air assembly 6 and the boiling bed 5 are connected through the first pipeline 10. The first air outlet 9 and the first hot air assembly 3 are connected through a second pipeline 21, and the fourth fan 151 and the tail gas processor 152 are connected through the second pipeline 21. The first pipeline 10 is provided with a first temperature measuring assembly 20, and the second pipeline 21 is provided with a second temperature measuring assembly 22.

[0046] The first temperature measuring assembly 20 and the second temperature measuring assembly 22 are both temperature sensors. The drying system of the embodiment is further provided with a PLC controller (not shown in the figure), and the first temperature measuring assembly 20 and the second temperature measuring assembly 22 are both electrically connected with the PLC controller. The system temperature is effectively monitored through the first temperature measuring assembly 20 and the second temperature measuring assembly 22, so that the drying temperature can be timely adjusted by the operator according to the drying conditions.

[0047] In summary, the drying system of the embodiment has the following advantages compared with the prior art:

[0048] 1. The cooperation of the first hot air assembly 3 and the vertically arranged drying pipe 2 enables the material to be vertically lifted upwards under the action of hot airflow, thereby improving the smoothness of material conveying. Meanwhile, the vertically arranged drying pipe 2 can effectively save the floor area. Moreover, the large air volume in the drying pipe 2 is high in drying efficiency for high-humidity and high-viscosity materials.

[0049] 2. The material dried by the drying pipe 2 can preliminarily remove a large amount of water, thereby reducing the material viscosity and preventing the material from sticking to the boiling bed 5. Meanwhile, the material is secondarily dried by the boiling bed 5, thereby ensuring uniform material drying and improving the quality of the output material.

[0050] 3. The hot air discharged from the boiling bed 5 is recycled to the first hot air assembly 3, thereby realizing gas recycling and greatly reducing the drying energy consumption of the system.

[0051] 4. The air hammers provided on the discharger 12 and the discharge outlet 4 can scatter the material, thereby ensuring uniform material drying and smooth conveying.

[0052] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A drying system for high-moisture, high-viscosity materials, characterized in that: The drying system comprises a pneumatic drying module and a boiling drying module arranged in sequence and communicated with each other, the pneumatic drying module is provided with a feeding port (1) for feeding materials to be dried, and the boiling drying module is provided with a discharging port (4) for discharging dried materials. The pneumatic drying module comprises a drying pipe (2) arranged vertically, a first hot air assembly (3) communicated with a lower end of the drying pipe (2), and the feeding port (1) is arranged on the drying pipe (2), and a first scattering assembly (18) is arranged at the feeding port (1).

2. The system for drying high-moisture, high-tack material of claim 1, wherein: The boiling drying module comprises a boiling bed (5), a second hot air assembly (6) communicated with one end of the boiling bed (5) close to the pneumatic drying module, and the discharging port (4) is arranged at the bottom of the boiling bed (5).

3. The system for drying high-moisture, high-tack material of claim 2, wherein: The boiling drying module further comprises a second scattering assembly (19) and a first air hammer (7) arranged on the boiling bed (5), and the second scattering assembly (19) is respectively communicated with the drying pipe (2) and the boiling bed (5).

4. The system for drying high-moisture, high-tack material of claim 2, wherein: The boiling bed (5) is further communicated with a cooling assembly (8) away from the pneumatic drying module.

5. The system for drying high-moisture, high-tack material of claim 2, wherein: The upper part of the boiling bed (5) is further provided with a first exhaust port (9), and the first exhaust port (9) is communicated with the first hot air assembly (3).

6. The system for drying high-moisture, high-tack material of claim 5, wherein: The boiling bed (5) is further provided with a dust removal assembly (11), and the dust removal assembly (11) is arranged close to the first exhaust port (9).

7. The system for drying high-moisture, high-tack material of claim 2, wherein: The drying system further comprises a discharging module arranged between the pneumatic drying module and the boiling drying module, the discharging module comprises a discharger (12) and a second air hammer (13) arranged on the discharger (12), and the discharger (12) is respectively communicated with the drying pipe (2) and the boiling bed (5).

8. The system for drying high-moisture, high-tack material of claim 7, wherein: The discharging module further comprises a second exhaust port (14) arranged on the discharger (12) and an exhaust assembly (15) communicated with the second exhaust port (14).

9. The system for drying high-moisture, high-tack material of claim 2, wherein: The first hot air assembly (3) and the drying pipe (2) are connected by a first pipeline (10), and the second hot air assembly (6) and the boiling bed (5) are connected by the first pipeline (10), and the first pipeline (10) is provided with a first temperature measuring assembly (20).

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