CN210545106U - Reaction kettle adjusting device - Google Patents
Reaction kettle adjusting device Download PDFInfo
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- CN210545106U CN210545106U CN201921049237.3U CN201921049237U CN210545106U CN 210545106 U CN210545106 U CN 210545106U CN 201921049237 U CN201921049237 U CN 201921049237U CN 210545106 U CN210545106 U CN 210545106U
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Abstract
The utility model provides a reation kettle adjusting device belongs to chemical production equipment technical field, including the reation kettle body, agitator, temperature regulation mechanism and medium circulation mechanism, the agitator stirs the medium in the reation kettle body, and temperature regulation mechanism is used for adjusting medium temperature, including spiral coil, heat exchanger and first circulating pump, still include the condenser that sets up with the heat exchanger is parallelly connected, and medium circulation mechanism is used for circulating the medium, including circulating line and second circulating pump. The utility model provides a pair of reation kettle adjusting device, spiral coil can carry out the heat transfer to the medium, can make the medium heat up or cool down, improve the circulation mobility of medium, have the medium temperature to the reation kettle body adjustable for medium circulation and reaction efficiency's technological effect.
Description
Technical Field
The utility model belongs to the technical field of chemical production equipment, more specifically say, relate to a reation kettle adjusting device.
Background
The reaction kettle is a physical or chemical reaction container commonly used in the production process of chemical enterprises, and realizes the heating, evaporation, cooling and low-speed mixing functions required by the process through the structural design and parameter configuration of the container.
The reaction temperature in the reaction kettle is an important factor of the reaction, the efficiency of the reaction is influenced, the reaction temperature required in the early stage of the reaction is different from that required in the later stage of the reaction, different temperatures are required to be adjusted in the early stage of the reaction and the later stage of the reaction, thereby the reaction is enabled to reach the optimal state, the temperature in the ordinary reaction kettle can not be adjusted, and in the operation process, the medium in the reaction kettle can not circularly flow or be adjusted, the reaction efficiency is reduced, the internal temperature of the reaction kettle is urgently needed to be operated simply and is easy to adjust, the medium can circularly flow, and the adjusting device for the reaction efficiency is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reation kettle adjusting device aims at solving reation kettle temperature and can not adjust, the internal medium of cauldron can not the endless technical problem.
In order to achieve the above object, the utility model adopts the following technical scheme: provides a reaction kettle adjusting device, which comprises
The reaction kettle body is used for accommodating a medium to be reacted, is provided with a feed inlet, a discharge outlet, a circulating liquid inlet and a circulating liquid outlet;
the stirrer is arranged on the reaction kettle body and is used for stirring a medium;
the temperature adjusting mechanism is used for adjusting the temperature of a medium and comprises a spiral coil which is arranged in the reaction kettle body and contains circulating liquid, a heat exchanger or a condenser which is arranged outside the reaction kettle body and a first circulating pump which provides circulating power; two ends of the spiral coil pipe respectively penetrate through the circulating liquid inlet and the circulating liquid outlet, and the spiral coil pipe, the heat exchanger and the first circulating pump are sequentially connected end to form a closed loop; the condenser is connected with the heat exchanger in parallel and is connected with the spiral coil and the first circulating pump end to form a closed loop; and
and the medium circulating mechanism is used for circulating a flowing medium and comprises a circulating pipeline with one end communicated with the bottom of the reaction kettle body and the other end communicated with the top of the reaction kettle body, and a second circulating pump which is arranged on the circulating pipeline and is used for circularly pumping the medium from the bottom to the top of the reaction kettle body.
Furthermore, the top of the reaction kettle body is communicated with a storage tank for containing a medium to be reacted, and a material conveying pump for pumping the medium into the reaction kettle body is arranged on a material conveying pipeline between the storage tank and the reaction kettle body.
Further, the agitator includes agitator motor and stirring rake, circumference is equipped with a plurality of swing boards on the inner wall of the reation kettle body, the lateral wall of swing board pass through reset spring with the inner wall of the reation kettle body is connected, and is a plurality of the swing board is the angular ring such as distribute, the swing board with the help of the rotatory touching and the swing of stirring rake.
Furthermore, electromagnetic valves for switching on and off pipelines are arranged at the upstream of the pipelines connected with the heat exchanger and the condenser.
Further, the downstream of the pipeline connected with the heat exchanger and the condenser is provided with a one-way valve for preventing the circulating liquid from flowing back.
Further, the heat exchanger and the condenser are communicated with an external heat exchange medium, and the circulating liquid exchanges heat by means of the heat exchange medium.
Furthermore, a plurality of temperature detectors are inserted into the reaction kettle body, and the temperature detectors are electrically connected with a temperature display arranged outside the reaction kettle body.
Further, the temperature detector is a thermocouple.
Furthermore, two layers of blades are arranged on the stirring paddle, the oscillating plates are arranged in two layers on the inner wall of the reaction kettle body, and the oscillating plates are arranged corresponding to the blades.
Furthermore, the outer wall of the reaction kettle body is also wrapped with a heat insulation layer or a jacket for heat insulation with the outside and heat preservation.
The utility model provides a pair of reation kettle adjusting device's beneficial effect lies in: compared with the prior art, the reaction kettle adjusting device of the utility model can stir the medium in the reaction kettle body, adjust the temperature and circulate the medium, the spiral coil pipe is fixed in the reaction kettle body and can exchange heat with the medium, the temperature of the circulating liquid is raised through the heat exchanger, the temperature of the circulating liquid can be reduced through the condenser, the circulating liquid can be circularly pumped into the spiral coil pipe through the first circulating pump, so that the medium in the reaction kettle is heated or cooled, the function of regulating the temperature of the medium is achieved, the second circulating pump provides circulating power for the medium being processed, the medium flows circularly, the reaction efficiency of the medium is increased, the technical problems that the temperature of a common reaction kettle cannot be adjusted and the medium in the kettle body cannot be circulated are solved, and the technical effects of adjusting the temperature of the medium in the reaction kettle body and accelerating the medium circulation and the reaction efficiency are achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a reactor regulating device provided in an embodiment of the present invention;
3 FIG. 32 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 31 3; 3
3 FIG. 33 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3 after 3 the 3 paddles 3 contact 3 the 3 swing 3 plate 3. 3
Wherein, in the figures, the respective reference numerals: 1. a reaction kettle body; 11. a feed inlet; 12. a discharge port; 13. a circulating liquid inlet; 14. a circulating liquid outlet; 15. a temperature detector; 16. a heat-insulating layer; 2. a stirrer; 21. a stirring motor; 22. a stirring paddle; 23. a swing plate; 24. a return spring; 3. a temperature adjustment mechanism; 31. a helical coil; 32. a heat exchanger; 33. a condenser; 34. a first circulation pump; 35. an electromagnetic valve; 36. a one-way valve; 4. a medium circulation mechanism; 41. a circulation pipe; 42. a second circulation pump; 5. a material storage tank; 6. a delivery pipeline; 7. a material delivery pump.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, a reaction kettle adjusting device according to an embodiment of the present invention will now be described. A reaction kettle adjusting device comprises a reaction kettle body 1, a stirrer 2, a temperature adjusting mechanism 3 and a medium circulating mechanism 4.
The reaction kettle body 1 contains a medium to be reacted, and is provided with a feed inlet 11, a discharge outlet 12, a circulating liquid inlet 13 and a circulating liquid outlet 14.
The stirrer 2 is arranged on the reaction kettle body 1 and is used for stirring the medium in the reaction kettle body 1.
The temperature adjusting mechanism 3 is used for adjusting the temperature of a medium and comprises a spiral coil 31 which is arranged inside the reaction kettle body 1 and is used for accommodating a circulating liquid, a heat exchanger 32 or a condenser 33 which is arranged outside the reaction kettle body 1 and a first circulating pump 34 for providing circulating power; two ends of the spiral coil 31 respectively penetrate through the circulating liquid inlet 13 and the circulating liquid outlet 14, and the spiral coil 31, the heat exchanger 32 and the first circulating pump 34 are sequentially connected end to form a closed loop; the condenser 33 is connected in parallel with the heat exchanger 32 and connected end to end with the spiral coil 31 and the first circulation pump 34 to form a closed loop.
The medium circulating mechanism 4 is used for circulating a flowing medium and comprises a circulating pipeline 41 with one end communicated with the bottom of the reaction kettle body 1 and the other end communicated with the top of the reaction kettle body 1, and a second circulating pump 42 which is arranged on the circulating pipeline 41 and is used for circularly pumping the medium from the bottom to the top of the reaction kettle body 1.
Compared with the prior art, the reaction kettle adjusting device provided by the embodiment of the utility model can stir the medium in the reaction kettle body 1, adjust the temperature and circulate the medium, the spiral coil 31 is fixed in the reaction kettle body 1 and can exchange heat with the medium, the temperature of the circulating liquid is raised by the heat exchanger 32, the temperature of the circulating liquid can be lowered by the condenser 33, the first circulating pump 34 can pump the circulating liquid into the spiral coil 31 in a circulating way, so that the medium in the reaction kettle is heated or cooled, the function of regulating the temperature of the medium is achieved, the second circulating pump 42 provides circulating power for the medium being processed, the medium flows circularly, the reaction efficiency of the medium is increased, the technical problems that the temperature of a common reaction kettle cannot be adjusted and the medium in the kettle body cannot circulate are solved, and the technical effects of adjusting the temperature of the medium in the reaction kettle body 1 and accelerating the medium circulation and the reaction efficiency are achieved.
In a specific embodiment, the medium in the reaction kettle body 1 may be liquid, or may be solid, or may be powder, or may be gas, and both the medium and the gas may be stored in the reaction kettle body 1 and stirred for reaction, the feed inlet 11 is used for feeding materials into the reaction kettle body 1, the discharge outlet 12 is used for discharging the reacted materials, the circulating liquid inlet 13 and the circulating liquid outlet 14 are used for communicating both ends of the spiral coil 31 and allowing circulating liquid to flow through, the circulating liquid can repeatedly flow in the spiral coil 31, after the pipe wall of the bolt coil contacts the medium in the reaction kettle body 1, heat exchange can be realized, the temperature can be raised or lowered, and finally the temperature of the medium is stabilized, which is beneficial for the medium to react and provides reaction efficiency.
In a specific embodiment, the heat exchanger 32 and the condenser 33 can be used in any switching manner, the heat exchanger 32 is a component with higher heat (temperature) generation, the condenser 33 is a component with lower heat (temperature) generation, and when the medium needs to be heated (or the temperature of the medium is increased), the medium temperature is increased through the heat exchanger 32; when the medium needs to be cooled down (temperature lowered), the communication condenser 33 lowers the medium temperature. However, it is to be noted that the heat exchanger 32 and the condenser 33 cannot be used at the same time, and only one of them is opened for use. The heat exchanger 32 is a steam type heat exchanger for generating high temperature and raising the temperature of the circulating liquid, the circulating liquid flows through the spiral coil 31, the spiral coil 31 is contacted with the medium, and heat is exchanged to raise the temperature of the medium. On the contrary, the condenser 33 is used for generating low temperature and reducing the temperature of the circulating liquid, the circulating liquid flows through the spiral coil 31, the spiral coil 31 is contacted with the medium, and heat is exchanged to reduce the temperature of the medium.
In a specific embodiment, the medium in the reaction kettle body 1 can be circulated by the second circulating pump 42, the medium is extracted from the bottom of the reaction kettle body 1, and is conveyed to the top of the reaction kettle body 1 after passing through the second circulating pump 42, so that the medium in the reaction kettle body 1 can also be circulated in the reaction process, and the reaction efficiency of the medium is accelerated. In addition, the media located at the bottom of the reaction vessel body 1 are accumulated, and the media can be circulated by the media circulation mechanism 4 provided, and the densities of the media located at the upper and lower portions of the reaction vessel body 1 are kept uniform without accumulation.
The embodiment of the utility model provides a pair of reation kettle adjusting device for in the chemical production, adjust the reaction medium temperature in reation kettle, the reasonable within range that the temperature of the medium that makes in the reation kettle body 1 maintained is favorable to improving the reaction efficiency who treats the reaction medium like this, and the medium circulation mechanism 4 of setting can improve the mobility of medium, makes the medium can the reciprocating cycle in reaction process, improves reaction efficiency, makes the medium reaction reach the optimum.
As an embodiment of the utility model provides a reation kettle adjusting device's a concrete implementation mode please refer to and show fig. 1, reation kettle body 1's top intercommunication has the storage tank 5 that is used for holding waiting to react the medium, is equipped with the conveying pump 7 that is used for to the medium of the internal pump sending of reation kettle 1 on conveying pipeline 6 between storage tank 5 and reation kettle body 1. The storage tank 5 stores the medium to be reacted, and the material conveying pump 7 provides conveying power to convey the medium to the reaction kettle body 1 through the material conveying pipeline 6.
As an embodiment of the present invention provides a kind of reactor regulating device's a specific implementation manner, please refer to fig. 1-fig. 3, the agitator 2 includes agitator motor 21 and stirring rake 22, the circumference is equipped with a plurality of swing plates 23 on the inner wall of the reactor body 1, the lateral wall of the swing plate 23 passes through reset spring 24 and the inner wall connection of the reactor body 1, a plurality of swing plates 23 are the equal angle annular distribution, the swing plate 23 swings with the help of the rotatory touching of stirring rake 22. The swing plate 23 swings by the rotation of the paddle 22 and can be returned by the return spring 24, so that the paddle 22 swings when it touches the swing plate 23, and at the same time, can function to stir the medium. For the sake of understanding, the rotational stirring of the stirring paddle 22 is understood as a main stirring member, the swinging of the swinging plate 23 is understood as an auxiliary stirring member, and the swinging of the swinging plate 23 is mainly used for stirring the edge region of the reaction tank body 1.
In a specific embodiment, the stirring motor 21 is a servo motor, the rotating shaft of the stirring paddle 22 is connected with the power output shaft of the stirring motor 21 through a coupling, one end of the swinging plate 23 is hinged with the inner wall of the reaction kettle body 1 through a hinge shaft, the swinging plate 23 can rotate on the inner wall of the reaction kettle body 1, and the swinging plate 23 can be naturally reset when being unconstrained through the reset spring 24.
In another embodiment, a speed reducer is further connected to the output shaft of the stirring motor 21, the power output shaft of the speed reducer is connected to the rotating shaft of the stirring paddle 22, and the speed reducer performs a speed reducing function on the stirring paddle 22. The speed reducer is a two-stage or three-stage speed reducer.
As an embodiment of the present invention, referring to fig. 1, a specific implementation manner of the reactor adjusting device is provided, and the upstream of the pipeline connected to the heat exchanger 32 and the condenser 33 is provided with an electromagnetic valve 35 for switching on and off the pipeline. The electromagnetic valve 35 can control the connection or disconnection of the heat exchanger 32 or the condenser 33, and when the heat exchanger 32 is used, the electromagnetic valve 35 connected with the condenser 33 is manually closed, and conversely, when the condenser 33 is used, the electromagnetic valve 35 connected with the heat exchanger 32 is closed.
It should be noted that the heat exchanger 32 and the solenoid valve 35 of the condenser 33 cannot be opened simultaneously.
Referring to fig. 1, a check valve 36 for preventing the circulation liquid from flowing back is disposed at the downstream of the pipeline connecting the heat exchanger 32 and the condenser 33. The check valve 36 is provided to prevent backflow or backflow during the circulation of the circulation liquid, so as to prevent the heat exchanger 32 or the condenser 33 from being affected, and to improve the circulation efficiency of the medium in the reaction vessel body 1.
As an embodiment of the present invention provides a specific implementation manner of a reactor adjustment device, please refer to fig. 1, the heat exchanger 32 and the condenser 33 are both connected to the external heat exchange medium, and the circulating liquid exchanges heat with the aid of the heat exchange medium. The heat exchanger 32 is communicated with a medium with high-temperature heat outside, the condenser 33 is communicated with a medium with low-temperature heat outside, and the circulating liquid in the spiral coil 31 is subjected to heat exchange with a heat exchange medium or becomes high-temperature circulating liquid or low-temperature circulating liquid by pumping of the first circulating pump 34, circulates in the spiral coil 31, contacts with the medium in the reaction kettle body 1 and realizes heat exchange, so that the purpose of changing the temperature of the medium is achieved.
As an embodiment of the present invention provides a specific implementation manner of a reaction vessel adjusting device, please refer to fig. 1, a plurality of temperature detectors 15 are inserted into the reaction vessel body 1, and the temperature detectors 15 are electrically connected to the temperature display device disposed outside the reaction vessel body 1. Temperature detector 15 pegs graft in the cauldron internal, can survey the temperature of medium, and when the high temperature or cross low, through the temperature that temperature regulation mechanism 3 can adjust the medium, convenient operation, the practicality is strong.
Referring to fig. 1, a temperature detector 15 is a thermocouple, which is a specific implementation manner of the reactor adjustment device provided by the embodiment of the present invention. The thermocouple thermometer is a commonly used temperature measuring element in a temperature measuring instrument, can directly measure temperature, can convert a temperature signal into a thermoelectromotive force signal, and converts the thermoelectromotive force signal into the temperature of a measured medium through an electric instrument. The appearance of various thermocouples is very different according to needs, but the basic structures of the thermocouples are almost the same, and the thermocouples are generally composed of main parts such as a thermode, an insulating sleeve protection tube, a junction box and the like, and are generally matched with a display instrument, a recording instrument and an electronic regulator for use.
As an embodiment of the utility model provides a concrete implementation of reation kettle adjusting device please refer to fig. 1, is equipped with two-layer paddle on the stirring rake 22, and swing board 23 arranges to be two-layer on the 1 inner wall of the reation kettle body, and swing board 23 corresponds the paddle and arranges. The two layers of blades and the swinging plate 23 which are arranged at the same time can rotate or swing at the same time, the blades at the upper part and the lower part rotate at the same time and touch the swinging plate 23 at the same time, the stirring progress of the medium is increased, and the medium reaction efficiency is improved.
In one embodiment, the oscillating plates 23 of each layer include four oscillating plates 23 and are uniformly arranged.
As a specific implementation manner of the reactor adjusting device provided by the embodiment of the present invention, please refer to fig. 1, the outer wall of the reactor body 1 is further wrapped with a heat insulating layer 16 or a jacket for insulating heat and preserving heat with the outside. The heat-insulating layer 16 or the jacket maintains that the temperature of the medium in the reaction kettle body 1 does not change too much, the heat-insulating layer 16 is made of heat-insulating materials, and the thermal coefficient of the heat-insulating materials is less than or equal to 0.12, so that the energy of the medium in the reaction kettle body 1 can be prevented from being dissipated, and the temperature range can be ensured.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A reactor regulating device, comprising:
the reaction kettle body is used for accommodating a medium to be reacted, is provided with a feed inlet, a discharge outlet, a circulating liquid inlet and a circulating liquid outlet;
the stirrer is arranged on the reaction kettle body and is used for stirring a medium;
the temperature adjusting mechanism is used for adjusting the temperature of a medium and comprises a spiral coil which is arranged in the reaction kettle body and contains circulating liquid, a heat exchanger or a condenser which is arranged outside the reaction kettle body and a first circulating pump which provides circulating power; two ends of the spiral coil pipe respectively penetrate through the circulating liquid inlet and the circulating liquid outlet, and the spiral coil pipe, the heat exchanger and the first circulating pump are sequentially connected end to form a closed loop; the condenser is connected with the heat exchanger in parallel and is connected with the spiral coil and the first circulating pump end to form a closed loop; and
and the medium circulating mechanism is used for circulating a flowing medium and comprises a circulating pipeline with one end communicated with the bottom of the reaction kettle body and the other end communicated with the top of the reaction kettle body, and a second circulating pump which is arranged on the circulating pipeline and is used for circularly pumping the medium from the bottom to the top of the reaction kettle body.
2. The reactor vessel adjusting apparatus as claimed in claim 1, wherein a tank for accommodating a medium to be reacted is connected to the top of the reactor vessel, and a feed pump for pumping the medium into the reactor vessel is provided in the feed conduit between the tank and the reactor vessel.
3. The reactor regulating device according to claim 1, wherein the agitator comprises an agitator motor and an agitator paddle, a plurality of oscillating plates are circumferentially arranged on the inner wall of the reactor body, the side walls of the oscillating plates are connected with the inner wall of the reactor body through return springs, the oscillating plates are annularly distributed at equal angles, and the oscillating plates oscillate by the rotary touch of the agitator paddle.
4. The reactor regulating device according to claim 1, wherein a solenoid valve for opening and closing a pipe is provided upstream of a pipe connecting the heat exchanger and the condenser.
5. The reactor regulating device according to claim 1, wherein a check valve for preventing a circulating liquid from flowing back is provided downstream of the pipe connecting the heat exchanger and the condenser.
6. The reactor regulating device according to claim 1, wherein the heat exchanger and the condenser are both in communication with an external heat exchange medium, and the circulating liquid exchanges heat with the heat exchange medium.
7. The reactor regulating device according to claim 1, wherein a plurality of temperature detectors are inserted into the reactor body, and the temperature detectors are electrically connected to a temperature display provided outside the reactor body.
8. The reactor vessel conditioning apparatus of claim 7 wherein the temperature detector is a thermocouple.
9. The reactor regulating device according to claim 3, wherein the stirring paddle is provided with two layers of blades, the oscillating plates are arranged in two layers on the inner wall of the reactor body, and the oscillating plates are arranged corresponding to the blades.
10. The reactor regulating device according to claim 1, wherein the outer wall of the reactor body is further covered with an insulating layer or a jacket for insulating heat from the outside and preserving heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049237.3U CN210545106U (en) | 2019-07-05 | 2019-07-05 | Reaction kettle adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049237.3U CN210545106U (en) | 2019-07-05 | 2019-07-05 | Reaction kettle adjusting device |
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| CN210545106U true CN210545106U (en) | 2020-05-19 |
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| CN201921049237.3U Active CN210545106U (en) | 2019-07-05 | 2019-07-05 | Reaction kettle adjusting device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473601A (en) * | 2020-11-24 | 2021-03-12 | 谭保华 | Reaction kettle for chemical industry |
| CN112657452A (en) * | 2020-12-09 | 2021-04-16 | 江苏铭朗环境科技有限公司 | Composite hydrogen sulfide removing agent for underground natural gas and production equipment |
| CN112723937A (en) * | 2020-12-29 | 2021-04-30 | 安徽富瑞雪化工科技股份有限公司 | Fertilizer anti-caking agent with pearl effect |
| CN114767558A (en) * | 2022-03-22 | 2022-07-22 | 无锡知妍生物科技有限公司 | Whitening and spot-fading essence milk with azelaic acid and preparation method thereof |
| CN115896830A (en) * | 2023-02-16 | 2023-04-04 | 凯莱英生命科学技术(天津)有限公司 | Reaction kettle and electrochemical reaction device with same |
-
2019
- 2019-07-05 CN CN201921049237.3U patent/CN210545106U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473601A (en) * | 2020-11-24 | 2021-03-12 | 谭保华 | Reaction kettle for chemical industry |
| CN112473601B (en) * | 2020-11-24 | 2022-05-10 | 技源生物科技(山东)有限公司 | Reaction kettle for chemical industry |
| CN112657452A (en) * | 2020-12-09 | 2021-04-16 | 江苏铭朗环境科技有限公司 | Composite hydrogen sulfide removing agent for underground natural gas and production equipment |
| CN112723937A (en) * | 2020-12-29 | 2021-04-30 | 安徽富瑞雪化工科技股份有限公司 | Fertilizer anti-caking agent with pearl effect |
| CN114767558A (en) * | 2022-03-22 | 2022-07-22 | 无锡知妍生物科技有限公司 | Whitening and spot-fading essence milk with azelaic acid and preparation method thereof |
| CN115896830A (en) * | 2023-02-16 | 2023-04-04 | 凯莱英生命科学技术(天津)有限公司 | Reaction kettle and electrochemical reaction device with same |
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