CN115646421A - Polyketone production facility and reation kettle thereof - Google Patents
Polyketone production facility and reation kettle thereof Download PDFInfo
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- CN115646421A CN115646421A CN202211360747.9A CN202211360747A CN115646421A CN 115646421 A CN115646421 A CN 115646421A CN 202211360747 A CN202211360747 A CN 202211360747A CN 115646421 A CN115646421 A CN 115646421A
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- 229920001470 polyketone Polymers 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 54
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000007789 gas Substances 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 17
- 239000012495 reaction gas Substances 0.000 abstract description 12
- 239000012295 chemical reaction liquid Substances 0.000 abstract description 11
- 238000012546 transfer Methods 0.000 abstract description 10
- 238000006116 polymerization reaction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 206010024769 Local reaction Diseases 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention discloses polyketone production equipment and a reaction kettle thereof, which comprise a kettle body, a driving motor, blades, a stirring shaft and a vent pipe, wherein the driving motor is arranged on the kettle body; the upper end of the stirring shaft is connected with a motor shaft of a driving motor, the lower end of the stirring shaft is connected with blades, the blades are positioned in the liquid to be reacted, and the blades are arranged along the radial direction of the reaction kettle; the breather pipe sets up on the (mixing) shaft, and the breather pipe has last blow vent and lower blow vent, and lower blow vent is located treats reaction liquid, and is close to the paddle setting, goes up the blow vent and is located the liquid level of treating reaction liquid above, and with treat that reaction gas communicates with each other. In the invention, the gas to be reacted enters the vent pipe through the upper vent hole and enters the liquid to be reacted through the lower vent hole under the action of pressure difference, so that the gas to be reacted is fully contacted with the liquid to be reacted, the mass transfer effect of the gas to be reacted is improved, the polymerization reaction rate is accelerated, the single-kettle reaction period is shortened, and the annual output and the equipment utilization rate of polyketone are improved.
Description
Technical Field
The invention relates to the technical field of production of high polymer materials by taking gas as a raw material, in particular to polyketone production equipment and a reaction kettle thereof.
Background
Polyketone is a green high polymer material with excellent comprehensive performance, can be used as materials such as general plastics, engineering plastics, special engineering plastics, fibers, films and the like, not only has excellent physicochemical characteristics such as high melting point, heat resistance, wear resistance, chemical reagent resistance, good mechanical property, gas barrier property and the like, but also has excellent photodegradable performance and chemical modification performance endowed by ketone groups on a polyketone main chain. The polyketone has wide sources of main raw materials, wherein CO can be obtained from coal-made gas or CO-containing industrial waste gas through purification. Therefore, the research and development of polyketone have very important practical significance and wide development prospect in the aspects of saving energy, eliminating white pollution, developing novel materials and the like, and meet the two requirements of the modern times on energy conservation and environmental protection.
However, the polymerization process and the product state are important factors affecting the polyketone production. Specifically, the mass transfer effect of CO gas in the solution in the raw materials directly influences the reaction speed of the polyketone, the solubility of the CO gas in the solution is poor, and the mass transfer effect of the CO gas in the solution is further reduced due to the fact that the polyketone reaction is in a slurry reaction form.
Therefore, how to improve the mass transfer effect of the raw material gas in the solution, accelerate the polymerization reaction rate, shorten the single-kettle reaction period, and improve the annual output and equipment utilization rate of polyketone is a key problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to improve the mass transfer effect of raw material gas in solution, accelerate the polymerization reaction rate, shorten the single-kettle reaction period, and improve the annual output of polyketone and the equipment utilization rate. In order to realize the purpose, the invention provides the following technical scheme:
a reaction kettle comprises a kettle body, a driving motor, blades, a stirring shaft and a vent pipe;
the reaction kettle is internally used for containing liquid to be reacted and gas to be reacted, the upper end of the stirring shaft is connected with a motor shaft of the driving motor, the lower end of the stirring shaft is connected with the blades, the blades are positioned in the liquid to be reacted, and the blades are arranged along the radial direction of the reaction kettle;
the breather pipe sets up on the (mixing) shaft, the breather pipe has last blow vent and lower blow vent, the blow vent is located down treat reaction liquid, and be close to the paddle sets up, it is located to go up the blow vent treat more than the liquid level of reaction liquid, and with treat that reaction gas communicates with each other.
Preferably, the reaction kettle further comprises an ear pocket, the ear pocket is positioned above the liquid level of the liquid to be reacted, the ear pocket is arranged on the vent pipe, and the ear pocket is communicated with an upper vent hole of the vent pipe;
and one side of the ear pocket is provided with an air catching port, the orientation of the air catching port is along the horizontal direction, and the air catching port is communicated with the inner cavity of the ear pocket.
Preferably, the air trap port is an outwardly flared port.
Preferably, the upper vent is connected to the bottom of the ear pocket.
Preferably, a nozzle is arranged at the lower vent hole and communicated with the lower vent hole.
Preferably, the stirring shaft is provided with stirring blades, and the stirring blades are positioned between the ear pocket and the blades.
Preferably, the stirring blade is a helical blade, the helical blade surrounds the circumferential direction of the stirring shaft and extends along the axial direction of the stirring shaft, and at least one part of the helical blade is connected with the stirring shaft;
the breather pipe is arranged on the helical band and is arranged along the helical band type blade, and the ear pocket is arranged at the upper end of the helical band type blade.
Preferably, the number of the helical blades is two, two helical blades in each pair are symmetrically arranged around the stirring shaft, one pair of the helical blades is located in an area surrounded by the other pair of the helical blades, and the vent pipes are arranged on all four helical blades.
Preferably, the kettle body is sleeved with a jacket, the jacket comprises a water inlet and a water outlet, the water inlet is connected with an outlet of a circulating water system, and the water outlet is connected with an inlet of the circulating water system.
The invention also provides polyketone production equipment which comprises a reaction kettle, wherein the reaction kettle is any one of the reaction kettles.
It can be seen from the above technical solution that: the paddle can produce little negative pressure at rotatory in-process, and the lower air vent of breather pipe is located little negative pressure region, and the last air vent of breather pipe is located the gas region of waiting to react above waiting to react the liquid level, and the air vent is in the positive pressure region promptly. Treat that reaction gas can get into the breather pipe through last blow vent under the effect of pressure differential to enter into through lower blow vent and treat reaction liquid, thereby make treat reaction gas and treat reaction liquid's abundant contact, improve and treat reaction gas's mass transfer effect, accelerate polymerization rate, shorten single cauldron reaction cycle, promote polyketone annual output and equipment utilization rate.
In the embodiment of the invention, the stirring blade is additionally arranged on the stirring shaft. Reaction liquid is treated for the stirring to stirring blade's effect, makes reaction gas and reaction liquid even contact, ensures that the reaction heat transfer is even, avoids local reaction to lead to the product caking and the wall built-up phenomenon too fast to prevent the polyketone formation caking, and prevent that the polyketone formation from attaching on the internal wall of cauldron, avoid regularly opening the cauldron and wash the cauldron body, and then improved the continuity and the high efficiency of polyketone production.
Drawings
In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a reaction kettle according to an embodiment of the present invention.
Wherein, 1 is a kettle body, 2 is a stirring shaft, 3 is a driving motor, 4 is a coupler, 5 is a helical-ribbon type blade, 6 is an ear pocket, 7 is a vent pipe, 8 is a nozzle, 9 is a blade, 10 is a feed inlet, 11 is an air inlet, and 12 is a discharge outlet.
Detailed Description
The invention discloses a reaction kettle, which can improve the mass transfer effect of raw material gas in a solution, accelerate the polymerization reaction rate, shorten the reaction period of a single kettle, and improve the annual output and equipment utilization rate of polyketone. The invention also discloses polyketone production equipment.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to the attached drawing 1, the invention discloses a reaction kettle, which comprises a kettle body 1, and particularly, a driving motor 3, a blade 9, a stirring shaft 2 and a vent pipe 7.
Wherein, the kettle body 1 is used for containing liquid to be reacted and gas to be reacted. The upper end of the stirring shaft 2 is connected with a motor shaft of the driving motor 3, and the lower end of the stirring shaft 2 is connected with the paddle 9. The driving motor 3 drives the blades 9 to rotate through the stirring shaft 2. The paddles 9 are located in the liquid to be reacted, and the paddles 9 are arranged along the radial direction of the reaction vessel. When the blades 9 rotate, the liquid to be reacted is promoted to flow to the inner wall of the kettle body 1, so that micro negative pressure is formed in the area where the blades 9 are located and close to the central part of the kettle body 1.
The breather pipe 7 is supported by the stirring shaft 2, and the breather pipe 7 can rotate along with the stirring shaft 2. The breather pipe 7 has an upper vent port and a lower vent port. The lower vents are located in the gas to be reacted and are arranged close to the blades 9. The upper vent is positioned above the liquid level of the liquid to be reacted and is communicated with the gas to be reacted positioned above the liquid level of the liquid to be reacted.
The paddle 9 can generate micro negative pressure in the rotating process, the lower vent of the vent pipe 7 is positioned in a micro negative pressure area, and the upper vent of the vent pipe 7 is positioned in a to-be-reacted gas area above the liquid level of the to-be-reacted liquid, namely the upper vent is positioned in a positive pressure area. Treat that reaction gas can get into breather pipe 7 through last blow vent under the effect of pressure difference to enter into through lower blow vent and treat reaction liquid, thereby make treat reaction gas and treat reaction liquid's abundant contact, improve and treat reaction gas's mass transfer effect for polymerization rate shortens single cauldron reaction cycle, promotes polyketone annual output and rate of equipment utilization.
In the embodiment of the invention, the ear pocket 6 is additionally arranged, the ear pocket 6 is positioned above the liquid level of the liquid to be reacted, and the ear pocket 6 is arranged on the vent pipe 7. The ear pocket 6 is communicated with the upper vent of the vent pipe 7. Ear pocket 6 is the cavity structure, and one side of ear pocket 6 is provided with the gas catching mouth, and the orientation of catching the gas mouth is along the horizontal direction. The air trapping opening is communicated with the inner cavity of the ear pocket 6.
At the rotatory in-process of (mixing) shaft 2, ear pocket 6 can rotate thereupon, and ear pocket 6 can catch through catching the gas mouth and wait to react gaseous at rotatory in-process, and the reaction gas of waiting to be caught can be held up in the inner chamber of ear pocket 6 by the pocket, later wait to react gaseous can enter into breather pipe 7 under the effect of pressure differential to finally enter into and wait to react in the liquid.
The shape of the ear pocket 6 may be a cylindrical shape, a rectangular parallelepiped shape, or a special shape, and as long as one side of the ear pocket 6 can form an air trap, the inside of the ear pocket 6 can form a cavity for accommodating gas, which all fall into the protection scope of the text.
In order to facilitate the air trapping of the air trapping ports, the air trapping ports are subjected to flaring design and are flared outwards.
Referring to fig. 1, in fig. 1, the ear bag 6 has a substantially rectangular parallelepiped structure, and the air trap is provided on one of four sides. And the air catching port expands outwards upwards, downwards, leftwards and rightwards to form a horn-shaped air catching port.
The last blow vent of breather pipe 7 is connected in the bottom of ear pocket 6, treats that reaction gas can enter into last blow vent through the bottom of ear pocket 6 after entering into the inner chamber of ear pocket 6, and then enters into breather pipe 7.
In the embodiment of the invention, a nozzle 8 is arranged at the lower vent of the vent pipe 7, and the nozzle 8 is communicated with the lower vent. The gas to be reacted entering the aeration pipe 7 is sprayed into the liquid to be reacted through the nozzle 8. The nozzle 8 can raise the injection area of the gas to be reacted, thereby ensuring sufficient contact of the gas to be reacted with the liquid to be reacted.
In the embodiment of the invention, the stirring blade is additionally arranged on the stirring shaft 2. In order to avoid interference with the blade 9 and the ear pocket 6, the present embodiment defines that the agitating blade is located between the ear pocket 6 and the blade 9.
The effect of stirring vane treats reaction liquid for the stirring to prevent the polyketone formation caking, and prevent that the polyketone formation from attaching on the internal wall of cauldron 1, thereby avoided regularly opening the cauldron and wash cauldron body 1, and then improved the continuity and the high efficiency of polyketone production.
The stirring blade may be a paddle blade or a ribbon blade 5. In the embodiment of the present invention, the stirring blade is preferably a helical ribbon blade 5. The helical blades 5 surround the circumferential direction of the stirring shaft 2 while extending in the axial direction of the stirring shaft 2. At least a part of the helical blades 5 is connected with the stirring shaft 2. The breather pipe 7 is arranged and connected on the helical blade 5, and the breather pipe 7 is arranged along the helical trend of the helical blade 5. The breather pipe 7 is arranged on the stirring shaft 2 through a helical ribbon blade 5. The ear pocket 6 is provided at the upper end of the ribbon-type blade 5. Compared with paddle blades, the helical blade 5 not only plays a role in stirring the liquid to be reacted, but also provides installation positions for the vent pipe 7 and the ear pocket 6, and is beneficial to the installation of the vent pipe 7 and the ear pocket 6.
The vent pipe 7 can be welded on the surface of the helical blade 5, and can also be molded inside the helical blade 5, specifically, the helical liquid sheet 5 and the vent pipe 7 are integrally molded by adopting a casting mode.
Referring to fig. 1, in the present embodiment, the helical ribbon blades 5 are designed as two pairs. The two helical blades 5 of each pair are arranged symmetrically with respect to the stirring shaft 2. Of the two pairs of helical blades 5, one pair of helical blades 5 is located in the region enclosed by the other pair of helical blades 5. Four helical blades 5 of the two pairs of helical blades 5 are provided with vent pipes 7. So both guaranteed the quantity of helical ribbon blade 5, improved stirring effect, guaranteed the quantity of breather pipe 7 again simultaneously, improved the mass transfer effect of treating reaction gas.
Of the two pairs of helical blades 5, four helical blades 5 are connected at their middle portions to the stirring shaft 2. In order to improve the structural stability of the two pairs of helical-ribbon blades 5, the upper cross beams are arranged on the upper parts of the four helical-ribbon blades 5 and are sequentially connected with the upper parts of the four helical-ribbon blades 5. The lower cross beams are arranged at the lower parts of the four helical-ribbon blades 5 and are sequentially connected with the lower parts of the four helical-ribbon blades 5.
In addition, the ear pockets 6 are designed into two, and the two ear pockets 6 are respectively arranged at the left side and the right side of the stirring shaft 2. Each ear pocket 6 is communicated with the upper air vents of the two air pipes 7 positioned on the same side of the stirring shaft 2.
Referring to fig. 1, the driving motor 3 is disposed above the kettle 1, a motor shaft of the driving motor 3 extends into the kettle 1, and the stirring shaft 2 is connected to the motor shaft of the driving motor 3 through the coupling 4.
In the specific embodiment of the invention, a jacket is arranged on the outer side of the kettle body 1, and the jacket is provided with a water inlet and a water outlet. The water inlet and the water outlet are both communicated with the inner cavity of the jacket. The water inlet is communicated with the outlet of the circulating water system, and the water outlet is communicated with the inlet of the circulating water system. The circulating water system continuously introduces circulating water into the inner cavity of the jacket through the water inlet, thereby exchanging heat for the kettle body 1 and maintaining the reaction temperature. The circulating water exchanges heat with the kettle body 1 and then flows back into the circulating water system through the water outlet.
The invention arranges a feed inlet 10 and an air inlet 11 on the sealing cover of the kettle body 1, and arranges a discharge outlet 12 at the bottom of the kettle body 1. The material of the kettle 1 is preferably stainless steel.
The invention also discloses polyketone production equipment which comprises a reaction kettle, particularly any one of the reaction kettles, wherein the reaction kettle has the effect, and the polyketone production equipment with the reaction kettle also has the effect, so that the polyketone production equipment is not repeated.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A reaction kettle comprises a kettle body (1), and is characterized by also comprising a driving motor (3), blades (9), a stirring shaft (2) and a vent pipe (7);
the reaction kettle comprises a kettle body (1), a driving motor (3), blades (9) and a stirring shaft (2), wherein the kettle body (1) is used for containing liquid to be reacted and gas to be reacted, the upper end of the stirring shaft (2) is connected with the motor shaft of the driving motor (3), the lower end of the stirring shaft (2) is connected with the blades (9), the blades (9) are located in the liquid to be reacted, and the blades (9) are arranged along the radial direction of the reaction kettle;
breather pipe (7) set up on (mixing) shaft (2), breather pipe (7) have last blow vent and lower blow vent, the blow vent is located down in waiting to react liquid, and be close to paddle (9) set up, go up the blow vent and be located wait to react more than the liquid level of liquid, and with it communicates with each other to wait to react gaseous.
2. The reaction kettle according to claim 1, further comprising an ear pocket (6), wherein the ear pocket (6) is located above the liquid level of the liquid to be reacted, the ear pocket (6) is arranged on the vent pipe (7), and the ear pocket (6) is communicated with an upper vent hole of the vent pipe (7);
an air catching port is arranged on one side of the ear pocket (6), the direction of the air catching port is along the horizontal direction, and the air catching port is communicated with the inner cavity of the ear pocket (6).
3. The reactor of claim 2, wherein the gas trap is flared outwardly.
4. The reactor according to claim 2, wherein the upper vent is connected to the bottom of the ear pocket (6).
5. The reaction kettle according to claim 2, wherein a nozzle (8) is arranged at the lower vent, and the nozzle (8) is communicated with the lower vent.
6. The reaction kettle according to claim 2, wherein a stirring blade is arranged on the stirring shaft (2), and the stirring blade is positioned between the ear pocket (6) and the blade (9).
7. The reactor according to claim 6, wherein the stirring vanes are helical vanes (5), the helical vanes (5) surround the circumference of the stirring shaft (2) and extend along the axial direction of the stirring shaft (2), and at least one part of the helical vanes (5) is connected with the stirring shaft (2);
the ventilating pipe (7) is arranged on the helical band and is arranged along the helical band type blade (5), and the ear pocket (6) is arranged at the upper end of the helical band type blade (5).
8. A reactor according to claim 7, wherein said helical blades (5) are provided in two pairs, two helical blades (5) of each pair being symmetrically arranged about said stirring shaft (2), and wherein one pair of said helical blades (5) is located within the area enclosed by the other pair of said helical blades (5), four of said helical blades (5) being provided with said vent tube (7).
9. The reaction kettle according to claim 1, wherein a jacket is sleeved outside the kettle body (1), the jacket comprises a water inlet and a water outlet, the water inlet is connected with an outlet of a circulating water system, and the water outlet is connected with an inlet of the circulating water system.
10. A polyketone production plant comprising a reactor, wherein the reactor is according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211360747.9A CN115646421B (en) | 2022-11-02 | 2022-11-02 | Polyketone production facility and reation kettle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211360747.9A CN115646421B (en) | 2022-11-02 | 2022-11-02 | Polyketone production facility and reation kettle thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115646421A true CN115646421A (en) | 2023-01-31 |
| CN115646421B CN115646421B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211360747.9A Active CN115646421B (en) | 2022-11-02 | 2022-11-02 | Polyketone production facility and reation kettle thereof |
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| Country | Link |
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| CN (1) | CN115646421B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762418A (en) * | 1996-07-19 | 1998-06-09 | Van Drie; Gerhardt Woodrow | Submarine-type liquid mixer |
| CN1324924A (en) * | 2000-05-18 | 2001-12-05 | 周镭 | Thallus culturing equipment and method and thallus culturing system with the equipment |
| CN213286847U (en) * | 2020-09-01 | 2021-05-28 | 江西鑫臻科技有限公司 | A chlorination cauldron for pesticide production |
-
2022
- 2022-11-02 CN CN202211360747.9A patent/CN115646421B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762418A (en) * | 1996-07-19 | 1998-06-09 | Van Drie; Gerhardt Woodrow | Submarine-type liquid mixer |
| CN1324924A (en) * | 2000-05-18 | 2001-12-05 | 周镭 | Thallus culturing equipment and method and thallus culturing system with the equipment |
| CN213286847U (en) * | 2020-09-01 | 2021-05-28 | 江西鑫臻科技有限公司 | A chlorination cauldron for pesticide production |
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|---|---|
| CN115646421B (en) | 2024-04-26 |
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