CN220071588U - Industrial micro-reactor for nitrosation reaction - Google Patents
Industrial micro-reactor for nitrosation reaction Download PDFInfo
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- CN220071588U CN220071588U CN202321459461.6U CN202321459461U CN220071588U CN 220071588 U CN220071588 U CN 220071588U CN 202321459461 U CN202321459461 U CN 202321459461U CN 220071588 U CN220071588 U CN 220071588U
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- cooling
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- 238000007034 nitrosation reaction Methods 0.000 title claims abstract description 17
- 239000000376 reactant Substances 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 70
- 238000006243 chemical reaction Methods 0.000 claims abstract description 65
- 239000002253 acid Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 230000002378 acidificating effect Effects 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000000986 disperse dye Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 8
- 239000000975 dye Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- HGWQOFDAUWCQDA-UHFFFAOYSA-N 4-hydroxynaphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(O)=CC=C(S(O)(=O)=O)C2=C1 HGWQOFDAUWCQDA-UHFFFAOYSA-N 0.000 description 4
- 235000010288 sodium nitrite Nutrition 0.000 description 4
- 238000004043 dyeing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 229920006052 Chinlon® Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- OFYJUQNXYAHUOG-UHFFFAOYSA-N [ClH]1(C=CC=C1)=O Chemical compound [ClH]1(C=CC=C1)=O OFYJUQNXYAHUOG-UHFFFAOYSA-N 0.000 description 1
- 229920006221 acetate fiber Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N hydrochloric acid Substances Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009935 nitrosation Effects 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model belongs to the technical field of disperse dyes, and particularly relates to an industrialized micro-reactor for nitrosation reaction, wherein a reaction tube and an acid material tube are arranged in parallel, the reaction tube and the acid material tube are connected through a plurality of parallel flow guide tubes, and the flow guide tubes are arranged at intervals from top to bottom; the reaction tube comprises a reactant tube and a cooling tube, wherein the reactant tube and the cooling tube are coaxially arranged, the tube diameter of the cooling tube is smaller than that of the reactant tube, the flow guide tube is connected to the reactant tube, one side, far away from the flow guide tube, of the reactant tube is provided with a reactant inlet positioned at the upper end of the reactant tube and a reactant outlet positioned at the lower end of the reactant tube, and a first pressure gauge and a thermometer are arranged between the reactant inlet and the reactant outlet. The device not only miniaturizes the whole reaction system, but also realizes the running water type mixed reaction by utilizing the liquid flow type reaction system, thereby improving the reaction efficiency and the raw material dispersing and homogenizing effect.
Description
Technical Field
The utility model belongs to the technical field of disperse dyes, and particularly relates to an industrial micro-reactor for nitrosation reaction.
Background
Disperse dyes are the most important and main class in the dye industry, and are nonionic dyes which do not contain strong water-soluble groups and dye in a disperse state in the dyeing process. The particle fineness is required to be about 1. Mu.m. After the raw dye is prepared, the raw dye is required to be subjected to post-treatment processing, including commercial treatment such as crystal form stabilization, grinding together with a dispersing agent and the like, so that the commercial dye can be prepared. The method is mainly used for dyeing and printing terylene and blended fabrics thereof. Can also be used for printing and dyeing synthetic fibers such as acetate fibers, chinlon, polypropylene fibers, chlorlon, acrylic fibers and the like. In the synthesis process of disperse dye, nitrosation reaction is one of the key steps, and along with the continuous improvement of environmental awareness and the continuous strictness of industrial production requirements, a miniaturized reaction system is gradually valued, but no related report exists at present.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the industrialized micro-reactor for the nitrosation reaction, which utilizes the pressure difference between a reaction tube and an acid material tube, and the effect of slowly adding the acid material into the reaction material is realized by matching with the communication effect of a flow guide tube, so that the nitrosation reaction is effectively controlled.
In order to achieve the technical purpose, the technical scheme of the utility model is as follows:
the industrial micro-reactor for nitrosation reaction comprises a reaction tube, an acid material tube and a diversion tube, wherein the reaction tube and the acid material tube are arranged in parallel, the reaction tube and the acid material tube are connected through a plurality of diversion tubes arranged in parallel, and the diversion tubes are arranged at intervals from top to bottom; the reaction tube comprises a reactant tube and a cooling tube, wherein the reactant tube and the cooling tube are coaxially arranged, the tube diameter of the cooling tube is smaller than that of the reactant tube, the flow guide tube is connected to the reactant tube, one side of the reactant tube, which is far away from the flow guide tube, is provided with a reactant inlet positioned at the upper end of the reactant tube and a reactant outlet positioned at the lower end of the reactant tube, a first pressure gauge and a thermometer are arranged between the reactant inlet and the reactant outlet, the first pressure gauge is used for measuring the pressure in the reactant tube, and the thermometer is used for measuring the temperature in the reactant tube; the upper end of the cooling pipe is a cooling water outlet, and the lower end of the cooling pipe is a cooling water inlet; the acid material pipe is internally provided with a second pressure gauge, and the second pressure gauge is used for measuring the pressure of the acid material pipe.
Further, each flow guide pipe is internally provided with a one-way valve, and two ends of the one-way valve are respectively communicated with the reaction pipe and the acid material pipe.
Further, the horizontal position of the reaction material inlet is higher than the flow guide pipe with the highest horizontal position.
Further, a partition plate is arranged between the reactant pipe and the cooling pipe, and the partition plate is positioned at one side of the reactant pipe inlet.
Further, the second pressure gauge and the first pressure gauge are located on the same horizontal plane.
From the above description, it can be seen that the present utility model has the following advantages:
1. the utility model solves the defect of the existing nitrosation reaction microminiaturization reaction device, utilizes the flow guide pipe to form gradient conveying of acid materials, and utilizes the reactant pipe with a coaxial structure to realize a flowing reaction system, thereby realizing microminiaturization and flow production of the reaction system and achieving the purpose of improving the reaction efficiency.
2. According to the utility model, the acidic materials in the acidic material pipe gradually flow into the reactant pipe by utilizing the pressure difference, so that the homogenization mixing of the reaction system is realized, a slow and continuous adding structure is achieved, and the slow adding requirement reflected by nitrosation is met.
3. The utility model utilizes the check valve to control the flow direction of the flow guide pipe, always ensures that the acid material pipe circulates the material into the reactant material pipe, effectively prevents the backflow phenomenon under special conditions such as shutdown, and ensures that the acid material pipe is not polluted, and simultaneously ensures that the reaction is always carried out in the reactant material pipe.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a horizontal section view of the reactant inlet in an embodiment of the utility model;
Detailed Description
One embodiment of the present utility model will be described in detail with reference to fig. 1 and 2, but does not limit the claims of the present utility model.
As shown in fig. 1, an industrial micro-reactor for nitrosation reaction comprises a reaction tube 1, an acidic material tube 2 and a flow guide tube 3, wherein the reaction tube 1 and the acidic material tube 2 are arranged in parallel, the reaction tube 1 and the acidic material tube 2 are connected through a plurality of flow guide tubes 3 arranged in parallel, and the flow guide tubes 3 are arranged at intervals from top to bottom; the reaction tube 1 comprises a reactant tube 1-1 and a cooling tube 1-3, wherein the reactant tube 1-1 and the cooling tube 1-3 are coaxially arranged, the tube diameter of the cooling tube 1-3 is smaller than that of the reactant tube 1-1, the flow guide tube 3 is connected to the reactant tube 1-1, one side, far away from the flow guide tube 3, of the reactant tube 1-1 is provided with a reactant inlet 1-12 positioned at the upper end of the reactant tube 1-1 and a reactant outlet 1-13 positioned at the lower end of the reactant tube, a first pressure gauge 1-11 and a thermometer 1-14 are arranged between the reactant inlet 1-12 and the reactant outlet 1-13, the first pressure gauge 1-11 is used for measuring the pressure in the reactant tube, and the thermometer is used for measuring the temperature in the reactant tube; the upper end of the cooling pipe 1-3 is provided with a cooling water outlet 1-32, and the lower end is provided with a cooling water inlet 1-31; a second pressure gauge 2-1 is arranged in the acid material pipe 2 and is used for measuring the pressure of the acid material pipe 2.
Further, each flow guiding pipe 3 is internally provided with a one-way valve 3-1, two ends of the one-way valve 3-1 are respectively communicated with the reaction pipe 1 and the acid material pipe 2, the one-way valve can ensure that materials in the acid material pipe can be transmitted to the reaction pipe, and the materials in the reaction pipe cannot be caused to flow back into the acid material pipe, and the whole reaction is ensured to be always carried out in the reaction pipe through the design.
Further, the horizontal position of the reactant inlets 1-12 is higher than the flow guide pipe 3 with the highest horizontal position. The whole reaction belongs to a coaxial cylindrical system, the whole reaction is carried out in a gap between a cooling pipe and a reactant material pipe, based on the connection position of the reactant material inlet higher than a guide pipe, when the reactant material inlet enters a reaction area, the flow of the reactant material carries the acidic material in the acidic material pipe to form reaction mixture, and the reactant material inlet forms a flow system at the connection opening of the guide pipe, so that the flow of the reactant material is ensured to continuously drive the acidic material, and the effect of homogeneous mixing is achieved.
Further, as shown in fig. 2, a partition board 1-4 is arranged between the reactant pipe 1-2 and the cooling pipe 1-3, and the partition board 1-4 is positioned at one side of the reactant pipe inlet 1-12 to play a role in side blocking, and the arrangement of the partition board can form a flow guiding effect on reactant materials; based on the whole reaction being carried out in the gap of the coaxial tube, after one side of the reaction material inlet is plugged, the reaction material can only circulate along one direction, i.e. in the whole gap, the reaction material forms directional flow, spirals downwards along the outer surface of the cooling tube and takes away the acid material in spiral rotation, thus forming good mixing.
Further, the second pressure gauge 2-1 and the first pressure gauge 1-11 are positioned on the same horizontal plane, and the second pressure gauge and the first pressure gauge are positioned on the same horizontal plane, so that an acid material pipe and a reaction material pipe can be rapidly measured
In the use process, a DN25 pipeline is adopted as a cooling pipe, a DN40 pipeline is adopted as a reaction material pipe, a DN25 pipe is adopted as an acid material pipe, cooling water from bottom to top is adopted as a cooling pipe, 30% sodium nitrite solution is adopted as a reaction material pipe, the temperature is controlled at 15-20 ℃, a suspension formed by mixing NW acid-hydrochloric acid aqueous solution is adopted as the acid material pipe, the pH is less than 1, the mass concentration of NW acid is 4%, and the temperature is 5-8 ℃; in the reaction system, the molar quantity of sodium nitrite is slightly higher than that of NW acid; utilize acid material pipe pressure slightly to be higher than the pressure of reactant material pipe, the suspension in the acid material pipe passes through the acid material pipe and gets into the honeycomb duct, finally get into in the reaction tube, this scheme adopts a plurality of honeycomb ducts from top to bottom the mode that the interval set up with the acid material in the acid material pipe to get into the reaction tube in batches, the slow of acid material has been realized adding and gradient dispersion, the effectual carrying on that promotes nitrosation reaction of the mode that the utilization degree of difficulty is poor, the effectual holistic reaction efficiency that has promoted has stopped simultaneously and has easily appeared inhomogeneous problem in the mixing process. Secondly, in the reaction tube, reactant material pipe and cooling tube coaxial arrangement, i.e. reactant material gets into in the crack of cooling tube and reactant material pipe through reactant material import, forms crack liquid flow structure, and this crack liquid flow structure brings the liquid level cross section less, can homogeneity drive the homogeneity dispersion of acid material, can not bring suspension particle's gathering, and cooperation sodium nitrite concentration and content are greater than NW acid all the time, promote the reaction of sodium nitrite and NW acid, and this reaction system goes on in the cooling treatment of cooling tube, and effectual control reaction temperature has solved the temperature promotion that the reaction heat brought in the reaction process. The device utilizes the mode of liquid flow reaction to promote the acid material to slowly add into the reaction material, has not only realized local high concentration reaction system, utilizes pipelined reaction system to realize continuous reaction moreover, has improved reaction efficiency, and the effectual reaction heat influence in the control reaction process reduces the influence of temperature to reaction system simultaneously.
It is to be understood that the foregoing detailed description of the utility model is merely illustrative of the utility model and is not limited to the embodiments of the utility model. It will be understood by those of ordinary skill in the art that the present utility model may be modified or substituted for elements thereof to achieve the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.
Claims (5)
1. An industrial microreactor for nitrosation reactions, characterized in that: the reaction tube and the acidic material tube are arranged in parallel, the reaction tube and the acidic material tube are connected through a plurality of parallel flow guide tubes, and the flow guide tubes are arranged at intervals from top to bottom; the reaction tube comprises a reactant tube and a cooling tube, wherein the reactant tube and the cooling tube are coaxially arranged, the tube diameter of the cooling tube is smaller than that of the reactant tube, the flow guide tube is connected to the reactant tube, one side of the reactant tube, which is far away from the flow guide tube, is provided with a reactant inlet positioned at the upper end of the reactant tube and a reactant outlet positioned at the lower end of the reactant tube, a first pressure gauge and a thermometer are arranged between the reactant inlet and the reactant outlet, the first pressure gauge is used for measuring the pressure in the reactant tube, and the thermometer is used for measuring the temperature in the reactant tube; the upper end of the cooling pipe is a cooling water outlet, and the lower end of the cooling pipe is a cooling water inlet; the acid material pipe is internally provided with a second pressure gauge, and the second pressure gauge is used for measuring the pressure of the acid material pipe.
2. The industrial microreactor for nitrosation reactions according to claim 1, characterized in that: a one-way valve is arranged in each guide pipe, and two ends of the one-way valve are respectively communicated with the reaction pipe and the acidic material pipe.
3. The industrial microreactor for nitrosation reactions according to claim 1, characterized in that: the horizontal position of the reaction material inlet is higher than the flow guide pipe with the highest horizontal position.
4. The industrial microreactor for nitrosation reactions according to claim 1, characterized in that: a partition plate is arranged between the reactant pipe and the cooling pipe, and the partition plate is positioned at one side of the reactant pipe inlet.
5. The industrial microreactor for nitrosation reactions according to claim 1, characterized in that: the second pressure gauge and the first pressure gauge are located on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321459461.6U CN220071588U (en) | 2023-06-08 | 2023-06-08 | Industrial micro-reactor for nitrosation reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321459461.6U CN220071588U (en) | 2023-06-08 | 2023-06-08 | Industrial micro-reactor for nitrosation reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220071588U true CN220071588U (en) | 2023-11-24 |
Family
ID=88818624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321459461.6U Active CN220071588U (en) | 2023-06-08 | 2023-06-08 | Industrial micro-reactor for nitrosation reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220071588U (en) |
-
2023
- 2023-06-08 CN CN202321459461.6U patent/CN220071588U/en active Active
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