CN215586476U - Reaction unit for high-efficiency production of chitosan fibers - Google Patents
Reaction unit for high-efficiency production of chitosan fibers Download PDFInfo
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- CN215586476U CN215586476U CN202121589051.4U CN202121589051U CN215586476U CN 215586476 U CN215586476 U CN 215586476U CN 202121589051 U CN202121589051 U CN 202121589051U CN 215586476 U CN215586476 U CN 215586476U
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Abstract
The utility model discloses a reaction device for efficiently producing chitosan fibers, and belongs to the technical field of chitosan fiber preparation. The device comprises a reaction kettle cover body and a reaction kettle body, wherein the reaction kettle cover body and the reaction kettle body are hermetically connected through a flange, a flow guide layer and a stirring device are arranged in the reaction kettle body, the lower space of the flow guide layer is a reaction cavity, a heat exchange cavity and an anticorrosive layer are arranged between the reaction cavity and the inner wall of the reaction kettle body, and a heat exchange tube is arranged in the heat exchange cavity; the stirring device comprises a driving motor, a stirring shaft and stirring blades, one end of the stirring shaft is rotatably connected with the driving motor, and the stirring shaft in the reaction cavity is provided with a plurality of stirring blades. The reaction device is provided with an anticorrosive layer in a reaction cavity by combining the grafting reaction characteristics of chitosan fiber and chloroacetic acid, a heat exchange tube filled with a heat exchange medium is arranged around the reaction cavity, and the stirring device adopts a fold-line-shaped stirring blade and a scraper blade, so that the structures are mutually matched, the limitation of reaction raw material selection is broken, and the high-efficiency production of the chitosan fiber is realized.
Description
Technical Field
The utility model belongs to the technical field of chitosan fiber preparation, and particularly relates to a reaction device for efficiently producing chitosan fibers.
Background
Chitosan is a natural linear polymer and has excellent properties of fiber forming, spinning and the like. The chitosan fiber can be prepared by utilizing the good fiber forming performance of the chitosan solution, and the prepared chitosan fiber has the advantages of antibiosis, no toxicity, biodegradability and the like. At present, chitosan fibers are mostly applied to fabrics and non-woven fabrics, and are limited in the fields of soluble medical sanitary materials, cosmetics and the like. In order to apply the excellent properties of pure chitosan fiber, such as high antibacterial activity, flexibility, air permeability and hygroscopicity, to the fields of medicine and cosmetics, long-term research has been conducted.
Research shows that the chitosan fiber is grafted with chloroacetic acid, the fiber shape can be maintained after carboxylation treatment, and the modified chitosan fiber has excellent performance and can be applied to the fields of medicines, cosmetics, biological health products and the like. The structure of the reaction apparatus will affect the efficiency of the reaction during the grafting reaction.
Disclosure of Invention
Aiming at the problems in the prior art, the technical problem to be solved by the utility model is to provide a reaction device for efficiently producing chitosan fibers, which combines the grafting reaction characteristics of chitosan fibers and chloroacetic acid, the reaction device is provided with an anticorrosive layer in a reaction cavity, a heat exchange tube filled with a heat exchange medium is arranged around the reaction cavity, and a stirring device adopts a fold-line-shaped stirring blade and a scraper blade, so that the structures are mutually matched, the limitation of reaction raw material selection is broken, and the high-efficiency production of chitosan fibers is realized.
In order to solve the problems, the utility model adopts the following technical scheme:
a reaction device for efficiently producing chitosan fibers comprises a reaction kettle cover body and a reaction kettle body, wherein the reaction kettle cover body and the reaction kettle body are connected through a flange in a sealing manner, the reaction kettle cover body is in a shape of a truncated cone, the upper part of the reaction kettle body is in a cylindrical structure, and the bottom of the reaction kettle body is in a hemispherical structure; a feed inlet is arranged on the reaction kettle cover body, and a discharge outlet is arranged at the bottom of the reaction kettle body;
the reaction kettle comprises a reaction kettle body, a flow guide layer and a stirring device, wherein the flow guide layer is fixedly arranged at the top of the reaction kettle body, the space below the flow guide layer is a reaction cavity of the reaction kettle body, a heat exchange cavity and an anticorrosive layer are sequentially arranged between the reaction cavity and the inner wall of the reaction kettle body from outside to inside, and a heat exchange tube is arranged in the heat exchange cavity;
the stirring device comprises a driving motor, a stirring shaft and stirring blades, wherein the stirring shaft penetrates through the reaction kettle cover body to extend outwards to be connected with the driving motor in a rotating mode, penetrates through the diversion layer to extend into the reaction cavity, and is provided with a plurality of stirring blades on the stirring shaft extending into the reaction cavity.
According to the reaction device for efficiently producing the chitosan fibers, the flow guide layer is provided with the plurality of flow distribution plates, and the liquid through hole is formed between every two adjacent flow distribution plates.
The reaction device for efficiently producing the chitosan fiber is characterized in that the bottom end of the stirring shaft is connected with a scraper through a connecting piece, and a gap is reserved between the scraper and the reaction kettle body.
High efficiency production reaction unit for chitosan fiber, stirring vane comprises two rectangular blade and constitutes zigzag blade, and the contained angle between two rectangular blade is 100 ~ 150.
Reaction unit for high efficiency production chitosan fiber, the heat exchange tube is the spiral pipe, and the spiral pipe sets up around reation kettle body spiral, the reation kettle body is stretched out to spiral pipe both ends opening, is connected in inlet channel and outlet conduit respectively.
The reaction device for efficiently producing the chitosan fiber is characterized in that a damping plate is arranged at the joint of the driving motor and the stirring shaft.
Has the advantages that: compared with the prior art, the utility model has the beneficial effects that:
(1) by combining the grafting reaction characteristics of chitosan fiber and chloroacetic acid, the reaction device is provided with the anticorrosive layer in the reaction cavity, so that the limitation on the selection of reaction raw materials is broken, and the service life of the reaction device can be prolonged.
(2) The reaction device is provided with the heat exchange tubes filled with the heat exchange medium around the reaction cavity, the heat exchange medium is introduced into the heat exchange tubes, the heat exchange medium is not directly introduced into the heat exchange cavity, the reaction temperature can be more conveniently controlled by adopting the heat exchange tubes, and the reaction device is more convenient to clean and maintain.
(3) This reaction unit's agitating unit adopts zigzag form stirring vane and scraper blade cooperation to use, and the scraper blade can strike off the material that glues the wall and sink the end, makes it carry out the material again along with agitating unit's stirring effect and mixes, and it is extravagant effectively to reduce the material.
Drawings
FIG. 1 is a schematic structural diagram of a reaction apparatus for efficiently producing chitosan fibers.
Detailed Description
The utility model is further described with reference to specific examples.
Example 1
A reaction device for efficiently producing chitosan fiber has a structure shown in figure 1. As can be seen from fig. 1, the device comprises a reaction kettle cover 1 and a reaction kettle body 2, wherein the reaction kettle cover 1 and the reaction kettle body 2 are hermetically connected through a flange, the reaction kettle cover 1 is in the shape of a circular truncated cone, the upper part of the reaction kettle body 2 is in the shape of a circular column, and the bottom of the reaction kettle body 2 is in the shape of a hemisphere; the reaction kettle cover body 1 is provided with two feed inlets 12, the two feed inlets 12 are symmetrically arranged and can be used for respectively feeding chitosan fibers and chloroacetic acid, and the bottom of the reaction kettle body 2 is provided with a discharge outlet; a flow guide layer 3 and a stirring device are arranged in the reaction kettle body 2.
The diversion layer 3 is fixed on the top of the reaction kettle body 2, the thickness of the diversion layer 3 is not too thick, so that the siltation of materials can be caused, and the reaction efficiency is influenced. The space at the lower part of the flow guide layer 3 is a reaction cavity of the reaction kettle body 2, a heat exchange cavity and an anticorrosive layer 6 are sequentially arranged between the reaction cavity and the inner wall of the reaction kettle body 2 from outside to inside, chloroacetic acid serving as a reaction raw material has corrosivity, and in order to reduce the corrosion of the raw material and prolong the service life of a reaction device, the anticorrosive layer is arranged at one side close to the reaction cavity; the heat exchange cavity is internally provided with a heat exchange tube 9, and the heat exchange tube 9 is internally provided with a flowing medium, so that the temperature required by the reaction in the reaction cavity can be maintained.
The stirring device comprises a driving motor 7, a stirring shaft 8 and stirring blades 4, the stirring shaft penetrates through the reaction kettle cover body 1 to extend outwards to be rotationally connected with the driving motor 7, the stirring shaft penetrates through the flow guide layer 3 to extend into the reaction cavity, and the stirring shaft extending into the reaction cavity is provided with a plurality of stirring blades 4; the stirring blade 4 is a fold line-shaped blade formed by two rectangular blades, the included angle between the two rectangular blades is 120 degrees, and the fold line-shaped stirring blade can stir more thoroughly. The stirring device can ensure that the raw materials are heated uniformly, the reaction is more complete, and the waste of the raw materials is reduced.
By combining the grafting reaction characteristics of the chitosan fiber and chloroacetic acid, the reaction device for efficiently producing the chitosan fiber is provided with the anticorrosive layer in the reaction cavity, so that the corrosion effect of chloroacetic acid on the reaction device is reduced, and the reaction efficiency is prolonged. This reaction has certain influence to reaction temperature, and this reaction unit adopts the heat exchange tube to control the temperature of reaction process, makes reaction temperature maintain a more invariable state to the heat transfer medium is not the mode that directly lets in the heat transfer cavity, because adopts the heat exchange tube can more conveniently control reaction temperature's change, and washs, maintains more conveniently.
Example 2
A reaction device for efficiently producing chitosan fiber has a structure shown in figure 1. As can be seen from fig. 1, the device comprises a reaction kettle cover 1 and a reaction kettle body 2, wherein the reaction kettle cover 1 and the reaction kettle body 2 are hermetically connected through a flange, the reaction kettle cover 1 is in the shape of a circular truncated cone, the upper part of the reaction kettle body 2 is in the shape of a circular column, and the bottom of the reaction kettle body 2 is in the shape of a hemisphere; the reaction kettle cover body 1 is provided with two feed inlets 12, the two feed inlets 12 are symmetrically arranged and can be used for respectively feeding chitosan fibers and chloroacetic acid, and the bottom of the reaction kettle body 2 is provided with a discharge outlet; a flow guide layer 3 and a stirring device are arranged in the reaction kettle body 2.
2 tops of reation kettle body are fixed to diversion layer 3, are equipped with a plurality of flow distribution plate 5 on diversion layer 3, form the through-flow hole in the middle of two adjacent flow distribution plates 5, and the thickness on diversion layer 3 is difficult too thick, can cause the siltation of material, influences reaction efficiency. The space at the lower part of the flow guide layer 3 is a reaction cavity of the reaction kettle body 2, a heat exchange cavity and an anticorrosive layer 6 are sequentially arranged between the reaction cavity and the inner wall of the reaction kettle body 2 from outside to inside, chloroacetic acid serving as a reaction raw material has corrosivity, and in order to reduce the corrosion of the raw material and prolong the service life of a reaction device, the anticorrosive layer is arranged at one side close to the reaction cavity; the heat exchange cavity is internally provided with a heat exchange tube 9, the heat exchange tube 9 is a spiral tube, the spiral tube is spirally arranged around the reaction kettle body 2, and the spiral tube can increase the contact area of a heat exchange medium and the reaction kettle body and increase the heat exchange efficiency; openings at two ends of the spiral pipe extend out of the reaction kettle body 2 and are connected with the water inlet pipeline and the water outlet pipeline respectively, and heat exchange media in the spiral pipe circularly flow, and the temperature of the heat exchange media in the heat exchange pipe 9 is adjusted in real time according to the real-time temperature in the reaction cavity and the temperature required by reaction.
The stirring device comprises a driving motor 7, a stirring shaft 8 and stirring blades 4, the stirring shaft penetrates through the reaction kettle cover body 1 to extend outwards to be connected with the driving motor 7 in a rotating mode, and a damping plate is arranged at the joint of the driving motor 7 and the stirring shaft 8. The stirring shaft penetrates through the flow guide layer 3 and extends into the reaction cavity, and a plurality of stirring blades 4 are arranged on the stirring shaft extending into the reaction cavity; the stirring blade 4 is a zigzag blade formed by two rectangular blades, and the included angle between the two rectangular blades is 100-150 degrees. The bottom of (mixing) shaft 8 is connected with scraper blade 11 through connecting piece 10, leaves the space between scraper blade 11 and the reation kettle body 2, and scraper blade 11 can strike off the material of gluing the wall and sinking the end, makes it carry out the material again along with agitating unit's stirring effect and mixes, and it is extravagant effectively to reduce the material.
By combining the grafting reaction characteristics of the chitosan fiber and chloroacetic acid, the reaction device for efficiently producing the chitosan fiber is provided with the anticorrosive layer in the reaction cavity, so that the corrosion effect of chloroacetic acid on the reaction device is reduced, and the reaction efficiency is prolonged. This reaction has certain influence to reaction temperature, and this reaction unit adopts the heat exchange tube to control the temperature of reaction process, makes reaction temperature maintain a more invariable state to the heat transfer medium is not the mode that directly lets in the heat transfer cavity, because adopts the heat exchange tube can more conveniently control reaction temperature's change, and washs, maintains more conveniently.
Claims (6)
1. A reaction device for producing chitosan fibers with high efficiency is characterized by comprising a reaction kettle cover body (1) and a reaction kettle body (2), wherein the reaction kettle cover body (1) and the reaction kettle body (2) are hermetically connected through a flange, the reaction kettle cover body (1) is in a shape of a circular truncated cone, the upper part of the reaction kettle body (2) is in a cylindrical structure, and the bottom of the reaction kettle body is in a hemispherical structure; a feed inlet (12) is arranged on the reaction kettle cover body (1), and a discharge outlet is arranged at the bottom of the reaction kettle body (2);
a flow guide layer (3) and a stirring device are arranged in the reaction kettle body (2), the flow guide layer (3) is fixedly arranged at the top of the reaction kettle body (2), the space at the lower part of the flow guide layer (3) is a reaction cavity of the reaction kettle body (2), a heat exchange cavity and an anticorrosive layer (6) are sequentially arranged between the reaction cavity and the inner wall of the reaction kettle body (2) from outside to inside, and a heat exchange tube (9) is arranged in the heat exchange cavity;
agitating unit includes driving motor (7), (mixing) shaft (8) and stirring vane (4), the (mixing) shaft passes reation kettle lid (1) and outwards extends to rotate with driving motor (7) and is connected, and the (mixing) shaft passes diversion layer (3) and extends to the reaction cavity in, is equipped with a plurality of stirring vane (4) on the (mixing) shaft that extends to in the reaction cavity.
2. The reaction device for efficiently producing chitosan fibers according to claim 1, wherein a plurality of flow distribution plates (5) are disposed on the flow guide layer (3), and a liquid through hole is formed between two adjacent flow distribution plates (5).
3. The reaction device for efficiently producing chitosan fibers according to claim 1, wherein the bottom end of the stirring shaft (8) is connected with a scraper (11) through a connecting piece (10), and a gap is reserved between the scraper (11) and the reaction kettle body (2).
4. The reaction device for efficiently producing chitosan fibers as claimed in claim 1, wherein said stirring blade (4) comprises two rectangular blades forming a polygonal blade, and the included angle between the two rectangular blades is 100-150 °.
5. The reaction device for efficiently producing chitosan fibers as claimed in claim 1, wherein said heat exchange tubes (9) are spiral tubes, said spiral tubes are spirally disposed around the reaction kettle body (2), and two ends of said spiral tubes are opened and extended out of the reaction kettle body (2) and connected to the water inlet pipe and the water outlet pipe respectively.
6. The reaction device for efficiently producing chitosan fibers as claimed in claim 1, wherein a shock-absorbing plate is disposed at the connection of said driving motor (7) and said stirring shaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121589051.4U CN215586476U (en) | 2021-07-13 | 2021-07-13 | Reaction unit for high-efficiency production of chitosan fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121589051.4U CN215586476U (en) | 2021-07-13 | 2021-07-13 | Reaction unit for high-efficiency production of chitosan fibers |
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| Publication Number | Publication Date |
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| CN215586476U true CN215586476U (en) | 2022-01-21 |
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| CN202121589051.4U Active CN215586476U (en) | 2021-07-13 | 2021-07-13 | Reaction unit for high-efficiency production of chitosan fibers |
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