CN213631191U - Continuous drying equipment of cellulose ether - Google Patents
Continuous drying equipment of cellulose ether Download PDFInfo
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- CN213631191U CN213631191U CN202022913215.6U CN202022913215U CN213631191U CN 213631191 U CN213631191 U CN 213631191U CN 202022913215 U CN202022913215 U CN 202022913215U CN 213631191 U CN213631191 U CN 213631191U
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Abstract
The utility model discloses continuous drying equipment for cellulose ether, which belongs to the technical field of chemical equipment and comprises a primary drying unit and a circulating drying unit; the primary drying unit comprises a fan, a heater, a wet bin, a first cyclone separator, a first drying pipe and a first buffer bin; the circulating drying unit comprises a second drying pipe, a second cyclone separator and a second buffer bin, the downstream end of the second drying pipe is connected with the feeding hole of the second cyclone separator, the discharging hole of the second cyclone separator is connected with the second buffer bin, and the first buffer bin and the second buffer bin are respectively connected with the upstream of the second drying pipe. The utility model discloses a continuous drying equipment of cellulose ether, drying unit and circulation drying unit use respective drying tube once, and circulation drying unit is arranged in continuing to circulate the drying with the material after drying once, avoids the wet material of cellulose ether in the new leading-in system and the cellulose ether direct mixing in the circulation drying process, has improved drying efficiency.
Description
Technical Field
The utility model relates to a continuous drying equipment of cellulose ether belongs to chemical production equipment technical field.
Background
Cellulose ether is widely used as a thickening agent, a water-retaining agent, a stabilizer, a dispersant and a film-forming agent in building materials, latex materials, foods, medicines, daily chemicals and the like. The production of cellulose ether adopts refined cotton as raw material, the refined cotton and alkali are made into alkalization reaction to produce alkalized cellulose, the alkalized cellulose and etherifying agent are made into cellulose ether mixed material, then the cellulose ether mixed material is neutralized, desolventized, centrifugally separated and dried to obtain the final product.
At present, the drying process of cellulose ether usually adopts air flow drying, specifically, wet cellulose ether is mixed with hot air, the cellulose ether is gradually dispersed and suspended in the air flow in the flowing process of the hot air, the contact surface between a gas phase and a solid phase is large, and heat transfer and mass transfer are fully carried out to dry the moisture in the cellulose ether. Subsequently, the cellulose ether enters a cyclone separator along with the airflow, is separated from the air and then is discharged from the bottom of the cyclone separator and collected in a bin. Generally, the water content of the cellulose ether after the process is carried out once cannot be reduced to the required requirement, and only the process is stopped to pump out the materials in the storage bin and then repeat the steps for secondary or tertiary drying, so that continuous operation is difficult to realize, and the production efficiency is low. Although some circulating drying techniques are disclosed in the prior art to prolong the drying time of the cellulose ether and sufficiently reduce the water content, in the disclosed circulating drying techniques, the newly added wet cellulose ether is directly mixed with the materials in the circulating system, so that more water is brought in, and the drying efficiency is reduced.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that prior art exists, provide a continuous drying equipment of cellulose ether, the direct discharge system of high water content waste gas that drying unit produced once to avoid the wet material of cellulose ether in the new leading-in system and the direct mixture of cellulose ether in the circulation drying process, improved drying efficiency.
The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:
a continuous drying apparatus for cellulose ether, comprising a primary drying unit and a circulating drying unit;
the primary drying unit comprises a fan, a heater, a wet bin, a first cyclone separator, a first drying pipe and a first buffer bin, an air outlet of the fan is connected to an air inlet of the heater through a pipeline, an air outlet of the heater is connected with the upstream end of the first drying pipe through a pipeline, the downstream end of the first drying pipe is connected with a feed inlet of the first cyclone separator, a discharge outlet of the first cyclone separator is connected with the first buffer bin, and the wet bin is connected with the upstream of the first drying pipe through a first discharge pipe;
the circulation drying unit comprises a second drying pipe, a second cyclone separator and a second buffer bin, the upstream end of the second drying pipe is connected with the gas outlet of the heater, the downstream end of the second drying pipe is connected with the feed inlet of the second cyclone separator, the discharge outlet of the second cyclone separator is connected with the second buffer bin, and the first buffer bin and the second buffer bin are respectively connected with the upstream of the second drying pipe through a second discharge pipe.
Optionally, the continuous drying equipment of cellulose ether still includes a three-way valve, the gas outlet of heater and the entry linkage of a three-way valve, two exports of a three-way valve respectively with the upstream end of first drying tube, the upstream end of second drying tube is connected.
Optionally, the continuous drying apparatus for cellulose ether further comprises a discharge pipe branched by the second drying pipe downstream of the first buffer bin and the second buffer bin.
Optionally, continuous drying equipment of cellulose ether still includes No. two three-way valves, and No. two three-way valves set up on first buffer bin and the second drying tube in second buffer bin low reaches, two exports of No. two three-way valves respectively with the feed inlet of second cyclone, arrange the material union coupling.
Optionally, the exhaust port of the first cyclone separator and the exhaust port of the second cyclone separator are both connected with the filter.
Optionally, the filter is a bag filter.
Optionally, a feeding auger is arranged in the first discharge pipe.
Optionally, a rotary discharge valve is arranged in the second discharge pipe.
Benefits of the present application include, but are not limited to:
the utility model provides a continuous drying equipment for cellulose ether, which comprises a primary drying unit and a circulating drying unit, wherein the primary drying unit and the circulating drying unit use respective drying pipes, the primary drying unit is used for drying wet materials for the first time, and the generated high-water content waste gas is directly discharged out of a system; the circulating drying unit is used for continuously circularly drying the materials after primary drying, so that the direct mixing of the wet cellulose ether materials newly introduced into the system and the cellulose ether in the circulating drying process is avoided, and the drying efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural view of a continuous drying apparatus for cellulose ether provided by the present invention;
in the figure, 110, a fan; 120. a heater; 130. a wet storage bin; 131. a first discharge pipe; 132. a feeding auger; 140. a first cyclone separator; 150. a first drying duct; 160. a first buffer bin; 210. a second drying duct; 220. a second cyclone separator; 230. a second buffer bin; 231. a second discharge pipe; 232. rotating the discharge valve; 310. a first three-way valve; 320. a second three-way valve; 410. a discharge pipe; 510. and (3) a filter.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein. Accordingly, the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in figure 1, the utility model provides a continuous drying equipment of cellulose ether, including drying unit and circulation drying unit once, drying unit is used for carrying out drying once with wet material once, and circulation drying unit is used for continuing to circulate the drying with the material after drying once.
Specifically, the primary drying unit includes a fan 110, a heater 120, a wet bin 130, a first cyclone 140, a first drying pipe 150, and a first buffer bin 160, an air outlet of the fan 110 is connected to an air inlet of the heater 120 through a pipe, an air outlet of the heater 120 is connected to an upstream end of the first drying pipe 150 through a pipe, a downstream end of the first drying pipe 150 is connected to a feed inlet of the first cyclone 140, a discharge outlet of the first cyclone 140 is connected to the first buffer bin 160, and the wet bin 130 is connected to an upstream of the first drying pipe 150 through a first discharge pipe 131.
The circulation drying unit includes a second drying pipe 210, a second cyclone 220, and a second buffer bin 230, an upstream end of the second drying pipe 210 is connected to the gas outlet of the heater 120, a downstream end of the second drying pipe 210 is connected to the gas inlet of the second cyclone 220, a gas outlet of the second cyclone 220 is connected to the second buffer bin 230, the first buffer bin 160 and the second buffer bin 230 are respectively connected to the upstream of the second drying pipe 210 through a second gas outlet pipe 231, wherein a portion through which the gas flow passes first is upstream.
When the drying device is operated, the fan 110 is started, air is pressurized and blown out by the fan 110, the air is heated to a certain temperature by the heater 120 and then enters the first drying pipe 150, the wet cellulose ether material is sucked into the first drying pipe 150 by the air flow from the upstream of the first drying pipe 150, the wet cellulose ether material is mixed with hot air, the cellulose ether is gradually dispersed and suspended in the air flow in the flowing process of the hot air, the contact surface between the gas phase and the solid phase is large, and the heat transfer and the mass transfer are fully carried out to dry the moisture in the cellulose ether. Subsequently, the cellulose ether enters the first cyclone separator 140 along with the airflow, the cellulose ether is separated from the waste gas, discharged from the bottom of the first cyclone separator 140 and collected in the first buffer bin 160, and the waste gas is discharged from the exhaust port at the top of the first cyclone separator 140, thereby completing primary drying.
In order to circularly dry the cellulose ether to reduce the water content thereof, in the circulating drying unit, the cellulose ether in the first buffer bin 160 is carried into the second drying pipe 210 by the air flow, is further dried by contacting with hot air, and then enters the second cyclone 220, and the cellulose ether is separated from the exhaust gas, discharged from the bottom of the second cyclone 220, and collected in the second buffer bin 230, and the exhaust gas is discharged from the exhaust port at the top of the second cyclone 220. The material at the bottom of the second buffer bin 230 is discharged and enters the second drying pipe 210 again, and the above process is repeated to form the circulation drying.
And stopping introducing the wet cellulose ether material after the cellulose ether in the system reaches a certain amount, and keeping the circulating drying unit to work.
Once fan 110 can be shared to drying system and circulation drying system, for this reason, the utility model provides a continuous drying equipment of cellulose ether still includes a three-way valve 310, and heater 120's gas outlet and the entry linkage of a three-way valve 310, two exports of a three-way valve 310 are connected with the upper reaches end of first drying tube 150, the upper reaches end of second drying tube 210 respectively, through a three-way valve 310 with hot-blast distribution to first drying tube 150 and second drying tube 210.
When the introduction of the wet cellulose ether material is stopped, the connection between the first three-way valve 310 and the first drying pipe 150 can be directly closed. And after the cyclic drying is continued for a certain time, sampling from the second buffer bin 230 or the second drying pipe 210 to detect the water content of the cellulose ether, and stopping the machine to discharge the cellulose ether when the water content is reduced to the standard requirement.
In order to discharge the cellulose ether in the system after the drying is completed, the present invention provides a continuous drying apparatus for cellulose ether, further comprising a discharge pipe 410, wherein the discharge pipe 410 is formed by branching the second drying pipe 210 downstream of the first buffer bin 160 and the second buffer bin 230. In order to facilitate the work of the material pipe 410 of arranging of control, the utility model provides a continuous drying equipment of cellulose ether still includes No. two three-way valves 320, and No. two three-way valves 320 set up on first buffer bin 160 and the second drying tube 210 of second buffer bin 230 low reaches, and two exports of No. two three-way valves 320 are connected with the feed inlet of second cyclone 220, row's material pipe 410 respectively. After the water content of the cellulose ether is reduced to the required requirement, the heater 120 is closed, the connection between the second three-way valve 320 and the downstream of the second drying pipe 210 is closed, the connection between the second three-way valve 320 and the material discharge pipe 410 is opened, and the material in the system can be discharged through the material discharge pipe 410 by the fan 110.
The exhaust port of the first cyclone separator 140 and the exhaust port of the second cyclone separator 220 are both connected with the filter 510, and the exhaust gas formed in the drying process is discharged through the first cyclone separator 140 and the second cyclone separator 220, enters the filter 510 for purification, and is then emptied or recycled. For example, the cold air may be introduced into the heat exchanger to preheat the cold air, and then the preheated cold air enters the heater 120 to be heated, so as to save electric energy. Optionally, the filter 510 is a bag filter.
In order to uniformly feed the wet cellulose ether mass into the first drying pipe 150, in a preferred embodiment, a feeding auger 132 is provided inside the first discharging pipe 131.
In a preferred embodiment, a rotary discharge valve 232 is disposed in the second discharge pipe 231, so that the material can be discharged uniformly and continuously, and the upper part and the lower part of the discharge valve can be isolated from the air pressure to achieve an air locking effect, thereby ensuring that the air pressure transmission in the system can work normally.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above-mentioned specific embodiments can not be regarded as the restriction to the protection scope of the present invention, to the technical personnel in this technical field, it is right that any replacement improvement or transformation that the embodiment of the present invention made all fall within the protection scope of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (8)
1. A continuous drying apparatus for cellulose ether, characterized by comprising a primary drying unit and a circulating drying unit;
the primary drying unit comprises a fan, a heater, a wet bin, a first cyclone separator, a first drying pipe and a first buffer bin, an air outlet of the fan is connected to an air inlet of the heater through a pipeline, an air outlet of the heater is connected with the upstream end of the first drying pipe through a pipeline, the downstream end of the first drying pipe is connected with a feed inlet of the first cyclone separator, a discharge outlet of the first cyclone separator is connected with the first buffer bin, and the wet bin is connected with the upstream of the first drying pipe through a first discharge pipe;
the circulation drying unit comprises a second drying pipe, a second cyclone separator and a second buffer bin, the upstream end of the second drying pipe is connected with the gas outlet of the heater, the downstream end of the second drying pipe is connected with the feed inlet of the second cyclone separator, the discharge outlet of the second cyclone separator is connected with the second buffer bin, and the first buffer bin and the second buffer bin are respectively connected with the upstream of the second drying pipe through a second discharge pipe.
2. The continuous drying apparatus for cellulose ether according to claim 1, further comprising a first three-way valve, wherein the outlet of the heater is connected to the inlet of the first three-way valve, and the two outlets of the first three-way valve are connected to the upstream ends of the first and second drying pipes, respectively.
3. The continuous drying apparatus for cellulose ethers according to claim 1, further comprising a discharge pipe formed by branching a second drying pipe downstream of the first buffer bin and the second buffer bin.
4. The continuous drying apparatus for cellulose ether according to claim 3, further comprising a second three-way valve, wherein the second three-way valve is disposed on the second drying pipe downstream of the first buffer bin and the second buffer bin, and two outlets of the second three-way valve are connected to the feeding inlet and the discharging pipe of the second cyclone, respectively.
5. The continuous drying apparatus for cellulose ethers according to claim 1, wherein the exhaust port of the first cyclone and the exhaust port of the second cyclone are connected to a filter.
6. The continuous drying apparatus for cellulose ethers according to claim 5, wherein the filter is a bag filter.
7. The continuous drying apparatus for cellulose ether according to claim 1, wherein a feeding auger is provided in the first discharging pipe.
8. Continuous cellulose ether drying apparatus according to claim 1, characterized in that a rotary discharge valve is arranged in the second tapping pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022913215.6U CN213631191U (en) | 2020-12-07 | 2020-12-07 | Continuous drying equipment of cellulose ether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022913215.6U CN213631191U (en) | 2020-12-07 | 2020-12-07 | Continuous drying equipment of cellulose ether |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213631191U true CN213631191U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022913215.6U Active CN213631191U (en) | 2020-12-07 | 2020-12-07 | Continuous drying equipment of cellulose ether |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213631191U (en) |
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2020
- 2020-12-07 CN CN202022913215.6U patent/CN213631191U/en active Active
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Effective date of registration: 20230815 Granted publication date: 20210706 |