CN215609435U - Synthetic high-efficient rectifying column of bis hydroxyethyl piperazine - Google Patents
Synthetic high-efficient rectifying column of bis hydroxyethyl piperazine Download PDFInfo
- Publication number
- CN215609435U CN215609435U CN202121652647.4U CN202121652647U CN215609435U CN 215609435 U CN215609435 U CN 215609435U CN 202121652647 U CN202121652647 U CN 202121652647U CN 215609435 U CN215609435 U CN 215609435U
- Authority
- CN
- China
- Prior art keywords
- wall
- tank body
- pipe
- rotating shaft
- distributed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model discloses a synthetic high-efficiency rectifying tower of dihydroxyethyl piperazine, which comprises a tank body, wherein a feeding pipe is inserted into the outer wall of one side of the tank body, a discharging pipe is inserted into the center of the outer wall of the bottom of the tank body, an air inlet pipe is inserted into the outer wall of one side of the tank body, which is close to the bottom of the tank body, packing plates distributed in an equidistant structure are installed in the tank body through bolts, a motor is installed at the center of the outer wall of the top end of the tank body through bolts, a rotating shaft is installed at the output end of the motor through a flat key, the rotating shaft is in rotating connection with the packing plates through bearings, and stirring plates distributed in an equidistant structure are welded on the outer walls of two sides of the rotating shaft. The utility model can start the motor to rotate the rotating shaft, so that the stirring plate can stir the materials on the packing plate, the contact area of the materials and the water vapor is increased, the rectification effect is improved, meanwhile, the water vapor flowing out of the tank body can enter the outer cylinder through the gas pipe, the materials which are disturbed by the spoiler in the feeding pipe are heated, and the heating efficiency of the equipment is improved.
Description
Technical Field
The utility model relates to the technical field of production equipment of dihydroxyethylpiperazine, in particular to a high-efficiency rectifying tower for synthesizing dihydroxyethylpiperazine.
Background
White to off-white crystal powder of bis-hydroxyethyl piperazine, melting point 134-: 215 ℃ and 220 ℃ 50mmHg (lit.), density: 1.097, flash point: 166 ℃ as a buffer, and the storage condition is normal temperature storage.
At present, a rectifying tower needs to be used in the production of the conventional bis (hydroxyethyl) piperazine, but the rectifying effect of the conventional rectifying tower is poor when the conventional rectifying tower is used, and meanwhile, the heating efficiency of the conventional rectifying tower is low, so that the rectifying effect is influenced, and therefore, a bis (hydroxyethyl) piperazine synthesis efficient rectifying tower needs to be designed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of poor rectifying effect and low heating efficiency of the existing rectifying tower in the prior art, and provides a synthetic efficient rectifying tower for bis-hydroxyethyl piperazine.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a synthetic high-efficient rectifying column of two hydroxyethyl piperazine, includes a jar body, it has the inlet pipe to peg graft on jar body one side outer wall, jar body bottom outer wall center department pegs graft and has the discharging pipe, jar body one side outer wall is close to bottom department and pegs graft and have the intake pipe, jar internal portion installs the packing plate that is equidistance structure distribution through the bolt, jar body top outer wall center department installs the motor through the bolt, and the output of motor installs the pivot through the parallel key, the pivot is changeing the connection through bearing and packing plate, the welding has the stirring board that is equidistance structure distribution on the outer wall of pivot both sides, and stirring board and packing plate contaction each other.
The key concept of the technical scheme is as follows: can the starter motor for the pivot rotates, thereby makes the stirring board stir the material on the packing plate, improves the area of contact of material and steam, thereby improves the rectification effect, and simultaneously, the steam that the jar body flows can get into the urceolus through the gas-supply pipe, thereby heats the intraduct by spoiler upset material of feeding, improves the heating efficiency of this equipment.
Further, the impeller is installed through the parallel key in pivot side outer wall department near the bottom, and the welding has the equidistance to be the blade that the annular structure distributes on the outer wall of connecting portion side.
Further, the outer walls of the two sides of the rotating shaft are provided with spring telescopic rods distributed in an equidistant structure through bolts, and one ends of the spring telescopic rods are provided with scrapers through the bolts.
Further, jar body top outer wall is close to the edge and installs the installation shell through the bolt, and the installation shell link up each other with the jar body, the inside welding of installation shell has the fin that the equidistance is concentric structure and distributes.
Furthermore, spoilers which are distributed in an annular structure at equal intervals are welded on the inner wall of the side face of the feeding pipe, an outer barrel is sleeved outside the feeding pipe, a gas conveying pipe is inserted into one side of the outer wall of the top of the outer barrel, and one end of the gas conveying pipe extends into the mounting shell.
Furthermore, a return pipe is inserted into one side of the outer wall at the bottom of the outer cylinder and extends into the tank body, and an exhaust pipe is inserted into one side of the outer wall at the top of the return pipe.
The utility model has the beneficial effects that:
1. through the stirring board and the pivot that set up, when using this equipment rectification, the staff can the starter motor for the pivot rotates, thereby makes the stirring board stir the material on the packing plate, improves the area of contact of material and steam, improves the rectification effect.
2. Through the outer barrel, when the equipment is used for rectification, water vapor flowing out of the tank body can enter the outer barrel through the gas conveying pipe, so that materials in the feeding pipe are heated, and the heating efficiency of the equipment is improved.
3. Through the scraper blade and the spring telescopic link that set up, when using this equipment, the structure that comprises spring telescopic link, scraper blade can drive down and clear up jar internal wall to the motor, thereby reduced the degree of difficulty that the staff cleared up.
4. Through the fin that sets up, when the internal portion of jar steam outflow jar body is inside to the installation shell, the solid-state material that carries in the fin can the adsorbed steam, later along with piling up of material, the material falls into internal portion of jar under the action of gravity, is favorable to improving the practicality of this equipment.
Drawings
FIG. 1 is a structural front view of a bis-hydroxyethyl piperazine synthetic high-efficiency rectifying tower provided by the utility model;
FIG. 2 is a schematic diagram of a tank structure of a high-efficiency rectification tower for synthesizing bis-hydroxyethyl piperazine provided by the utility model;
FIG. 3 is a schematic view of the internal structure of an installation shell of a bis-hydroxyethyl piperazine synthetic high-efficiency rectifying tower provided by the utility model;
FIG. 4 is a side sectional view of the outer cylinder structure of a bis-hydroxyethyl piperazine synthetic high-efficiency rectification tower provided by the utility model.
In the figure: 1 tank body, 2 feed pipes, 3 outer cylinders, 4 return pipes, 5 exhaust pipes, 6 intake pipes, 7 discharge pipes, 8 mounting shells, 9 gas transmission pipes, 10 motors, 11 packing plates, 12 rotating shafts, 13 stirring plates, 14 spring telescopic rods, 15 scraping plates, 16 impellers, 17 fins, 18 spoilers and 19 blades.
Detailed Description
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 given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, a high-efficiency rectification tower for synthesizing dihydroxyethyl piperazine comprises a tank body 1, wherein a feed pipe 2 is inserted into the outer wall of one side of the tank body 1, the feed pipe 2 facilitates materials to enter the tank body 1, a discharge pipe 7 is inserted into the center of the outer wall of the bottom of the tank body 1, the discharge pipe 7 facilitates the rectified materials to flow out of the tank body 1, an air inlet pipe 6 is inserted into the outer wall of one side of the tank body 1 near the bottom, the air inlet pipe 6 facilitates water vapor to enter the tank body 1, packing plates 11 distributed in an equidistant structure are installed inside the tank body 1 through bolts, a motor 10 is installed at the center of the outer wall of the top end of the tank body 1 through bolts, the type of the motor 10 is preferably YX3-0.75KW-4, power is conveniently provided for the rotation of a rotating shaft 12, a rotating shaft 12 is installed at the output end of the motor 10 through a flat key, the rotating shaft 12 facilitates transmission movement, and is rotatably connected with the packing plates 11 through a bearing, the welding has the stirring board 13 that is equidistance structure and distributes on the outer wall of 12 both sides of pivot, and stirring board 13 stirs the material on the packing plate 11, improves the area of contact of material and steam to improve the rectification effect, and stirring board 13 and packing plate 11 contact each other.
As apparent from the above description, the present invention has the following advantageous effects: can the starter motor 10 for pivot 12 rotates, thereby makes stirring board 13 stir the material on the packing plate 11, improves the area of contact of material and steam, thereby improves the rectification effect, and simultaneously, the steam that the jar body 1 flows can get into urceolus 3 through gas-supply pipe 9, thereby heats the inside material that is disturbed by spoiler 18 of inlet pipe 3, improves the heating efficiency of this equipment.
Further, the impeller 16 is installed to the outer wall of the side face of the rotating shaft 12 close to the bottom end through a flat key, the impeller 16 is convenient to install blades 19, the blades 19 distributed in an annular structure at equal intervals are welded to the outer wall of the side face of the connecting portion 19, and the blades 19 can be driven by the rotating shaft 12 to descend to enter the water vapor in the tank body 1 to be mixed.
Further, install the spring telescopic link 14 that is equidistant structure and distributes through the bolt on the outer wall of 12 both sides of pivot, spring telescopic link 14 is convenient for scraper blade 15 direct and jar body 1 contact, and scraper blade 15 is installed through the bolt to 14 one end of spring telescopic link, and scraper blade 15 can be driven under motor 10 and clear up jar body 1 inner wall, avoids the material to glue on jar body 1 inner wall.
Further, jar body 1 top outer wall is close to the edge and installs installation shell 8 through the bolt, and installation shell 8 is convenient for prevent that steam from directly flowing out, and installation shell 8 link up each other with jar body 1, and installation shell 8 internal weld has the fin 17 that the equidistance is concentric structure and distributes, and fin 17 can adsorb the solid-state material that carries in the steam, later along with piling up of material, the material falls into jar body 1 inside under the action of gravity.
Further, the welding has the spoiler 18 that the equidistance is the annular structure and distributes on 2 side inner walls of inlet pipe, spoiler 18 is convenient for reduce the velocity of flow of material in 2 inside of inlet pipe, so that heat the material, 2 outside urceolus 3 that have cup jointed of inlet pipe, 3 gaseous and the 2 contacts of inlet pipe of the gas-supply pipe 9 output of being convenient for of urceolus, heat the inside material of inlet pipe 2, and 3 top outer wall one side pegs graft of urceolus have gas-supply pipe 9, the gas-supply pipe 9 is convenient for 3 inside steam flows to 3 insides of urceolus, 9 one end of gas-supply pipe extends to inside 8 of installation shell.
Furthermore, 3 bottom outer wall one sides of urceolus are pegged graft and are had back flow 4, and back flow 4 is convenient for the liquefied vapor to jar internal portion of body 1, and back flow 4 extends to jar internal portion of body 1, and 4 top outer wall one sides of back flow are pegged graft and are had blast pipe 5, and blast pipe 5 is convenient for the inside vapor of back flow 4 and flows.
Adopt the spring telescopic link 14, the scraper blade 15 of above-mentioned setting, by spring telescopic link 14, the structure that scraper blade 15 constitutes can clear up jar 1 inner wall under the motor 10 drives, avoids the material to glue on jar 1 inner wall, simultaneously, when jar body 1 inside steam outflow jar body 1 to installation shell 8 is inside, fin 17 can adsorb the solid-state material that carries in the steam, later along with piling up of material, the material falls into jar body 1 inside under the action of gravity.
Some preferred embodiments or application examples are listed below to help those skilled in the art to better understand the technical content of the present invention and the technical contribution of the present invention with respect to the prior art:
example 1
A synthetic high-efficient rectifying column of dihydroxyethyl piperazine, including the jar body 1, the outer wall of one side of jar body 1 is inserted and connected with the inlet pipe 2, the inlet pipe 2 is convenient for the supplies to enter jar body 1, the outer wall center of the bottom of jar body 1 is inserted and connected with the discharging pipe 7, the discharging pipe 7 is convenient for the rectified supplies to flow out of jar body 1, the outer wall of one side of jar body 1 is inserted and connected with the inlet pipe 6 near the bottom, the inlet pipe 6 is convenient for the steam to enter jar body 1, the jar body 1 is internally provided with the packing plate 11 which is distributed with the equidistant structure through the bolt, the outer wall center of the top end of jar body 1 is provided with the motor 10 through the bolt, the motor 10 model is preferably YX3-0.75KW-4, it is convenient to provide the power for the rotation of the rotating shaft 12, and the output end of the motor 10 is provided with the rotating shaft 12 through the flat key, the rotating shaft 12 is convenient for the transmission motion, the rotating shaft 12 is in the rotating connection with the packing plate 11 through the bearing, the welding has the stirring plates 13 which is distributed with the equidistant structure on the outer wall of both sides of the rotating shaft 12, the stirring plate 13 stirs the material on the packing plate 11, improves the area of contact of material and steam to improve the rectification effect, and stirring plate 13 and packing plate 11 contact each other.
Wherein, the impeller 16 is arranged on the outer wall of the side surface of the rotating shaft 12 close to the bottom end through a flat key, the impeller 16 is convenient for installing blades 19, the blades 19 which are distributed in an annular structure at equal intervals are welded on the outer wall of the side surface of the connecting part 19, and the blades 19 can be driven by the rotating shaft 12 to descend to enter the water vapor in the tank body 1 to be mixed; the outer walls of two sides of the rotating shaft 12 are provided with spring telescopic rods 14 which are distributed in an equidistant structure through bolts, the spring telescopic rods 14 are convenient for the scraper 15 to directly contact with the tank body 1, one end of each spring telescopic rod 14 is provided with the scraper 15 through the bolts, and the scraper 15 can clean the inner wall of the tank body 1 under the driving of the motor 10, so that materials are prevented from being stuck on the inner wall of the tank body 1; the mounting shell 8 is mounted on the outer wall of the top of the tank body 1 close to the edge through bolts, the mounting shell 8 is convenient for preventing water vapor from directly flowing out, the mounting shell 8 is communicated with the tank body 1, fins 17 distributed in a concentric structure at equal intervals are welded in the mounting shell 8, the fins 17 can absorb solid materials carried in the water vapor, and then the materials fall into the tank body 1 under the action of gravity along with the accumulation of the materials; the inner wall of the side face of the feeding pipe 2 is welded with spoilers 18 which are distributed in an annular structure at equal intervals, the spoilers 18 are convenient for reducing the flow velocity of materials in the feeding pipe 2 so as to heat the materials, the outer barrel 3 is sleeved outside the feeding pipe 2, the outer barrel 3 is convenient for gas output by the gas pipe 9 to be contacted with the feeding pipe 2 so as to heat the materials in the feeding pipe 2, the gas pipe 9 is inserted into one side of the outer wall of the top of the outer barrel 3, the gas pipe 9 is convenient for water vapor in the outer barrel 3 to flow into the outer barrel 3, and one end of the gas pipe 9 extends into the mounting shell 8; 3 bottom outer wall one side of urceolus is pegged graft and is had back flow 4, and back flow 4 is convenient for the liquefied vapor to jar internal portion of 1, and back flow 4 extends to jar internal portion of 1, and 4 top outer wall one sides of back flow are pegged graft and are had blast pipe 5, and blast pipe 5 is convenient for the inside vapor of back flow 4 and flows.
The working principle is as follows: when the device is used, a worker can add water vapor into the tank body 1 through the air inlet pipe 6, then the worker can add materials into the tank body 1 through the inlet pipe 2, then the materials can pass through the packing plate 11 in the tank body 1, the water vapor falls to the bottom of the tank body 1 under the action of the water vapor, then the material is discharged out of the tank body 1 through the discharge pipe 7, meanwhile, when the device is operated, the worker can start the motor 10 to rotate the rotating shaft 12, so that the stirring plate 13 can stir the materials on the packing plate 11, the contact area between the materials and the water vapor is increased, the rectification effect is improved, at the moment, the structure formed by the spring telescopic rod 14 and the scraper 15 can clean the inner wall of the tank body 1 under the driving of the motor 10, the materials are prevented from being adhered to the inner wall of the tank body 1, and meanwhile, when the water vapor in the tank body 1 flows out of the tank body 1 to the inside the mounting shell 8, the fins 17 can absorb the solid materials carried in the water vapor, later along with piling up of material, the material falls into jar body 1 inside under the action of gravity, and simultaneously, the steam that jar body 1 flows out can get into urceolus 3 through gas-supply pipe 9 to the inside material that is disturbed by spoiler 18 of inlet pipe 3 heats, improves the heating efficiency of this equipment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. A high-efficiency rectifying tower for synthesizing dihydroxyethyl piperazine, which comprises a tank body (1) and is characterized in that, a feeding pipe (2) is inserted on the outer wall of one side of the tank body (1), a discharging pipe (7) is inserted in the center of the outer wall of the bottom of the tank body (1), an air inlet pipe (6) is inserted in the position, close to the bottom, of the outer wall of one side of the tank body (1), packing plates (11) which are distributed in an equidistant structure are installed in the tank body (1) through bolts, a motor (10) is arranged at the center of the outer wall of the top end of the tank body (1) through a bolt, and the output end of the motor (10) is provided with a rotating shaft (12) through a flat key, the rotating shaft (12) is in rotating connection with the packing plate (11) through a bearing, the outer walls of two sides of the rotating shaft (12) are welded with stirring plates (13) which are distributed in an equidistant structure, and the stirring plates (13) are in mutual contact with the packing plate (11).
2. The synthetic high efficiency rectification tower of bis-hydroxyethyl piperazine according to claim 1, wherein the impeller (16) is installed on the outer wall of the side surface of the rotating shaft (12) near the bottom end through a flat key, and the blades (19) distributed in an annular structure at equal intervals are welded on the outer wall of the side surface of the connecting portion (19).
3. The synthetic high-efficiency rectifying tower of bis-hydroxyethyl piperazine according to claim 1, wherein the outer walls of two sides of the rotating shaft (12) are provided with spring telescopic rods (14) distributed in an equidistant structure through bolts, and one end of each spring telescopic rod (14) is provided with a scraper (15) through a bolt.
4. The synthetic high-efficiency rectifying tower of bis-hydroxyethyl piperazine according to claim 1, characterized in that the outer wall of the top of the tank body (1) is provided with a mounting shell (8) near the edge by bolts, the mounting shell (8) and the tank body (1) are communicated with each other, and fins (17) are welded inside the mounting shell (8) and are distributed in a concentric structure at equal intervals.
5. The synthetic high-efficiency rectifying tower of bis-hydroxyethyl piperazine according to claim 4, wherein spoilers (18) distributed in an annular structure at equal intervals are welded on the inner wall of the side surface of the feeding pipe (2), the outer cylinder (3) is sleeved outside the feeding pipe (2), a gas pipe (9) is inserted into one side of the outer wall of the top of the outer cylinder (3), and one end of the gas pipe (9) extends into the mounting shell (8).
6. The synthetic high efficiency rectifying tower of bis hydroxyethyl piperazine according to claim 5, characterized in that a backflow pipe (4) is inserted into one side of the outer wall of the bottom of the outer cylinder (3), the backflow pipe (4) extends into the tank body (1), and an exhaust pipe (5) is inserted into one side of the outer wall of the top of the backflow pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121652647.4U CN215609435U (en) | 2021-07-20 | 2021-07-20 | Synthetic high-efficient rectifying column of bis hydroxyethyl piperazine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121652647.4U CN215609435U (en) | 2021-07-20 | 2021-07-20 | Synthetic high-efficient rectifying column of bis hydroxyethyl piperazine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215609435U true CN215609435U (en) | 2022-01-25 |
Family
ID=79891175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121652647.4U Active CN215609435U (en) | 2021-07-20 | 2021-07-20 | Synthetic high-efficient rectifying column of bis hydroxyethyl piperazine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215609435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116251369A (en) * | 2023-01-31 | 2023-06-13 | 安徽东科新材料有限公司 | Co-production system and process for methyl ethyl carbonate and diethyl carbonate |
-
2021
- 2021-07-20 CN CN202121652647.4U patent/CN215609435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116251369A (en) * | 2023-01-31 | 2023-06-13 | 安徽东科新材料有限公司 | Co-production system and process for methyl ethyl carbonate and diethyl carbonate |
| CN116251369B (en) * | 2023-01-31 | 2023-09-26 | 安徽东科新材料有限公司 | Co-production system and process for methyl ethyl carbonate and diethyl carbonate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215609435U (en) | Synthetic high-efficient rectifying column of bis hydroxyethyl piperazine | |
| CN207287248U (en) | A kind of civil construction asphalt stirring device | |
| CN112461026B (en) | Heat storage equipment for absorbing heat energy of molten calcium carbide by adopting binary salt | |
| CN211316817U (en) | Efficient drying device for palm shell processing | |
| CN210114853U (en) | Contain salt secondary steam recycle device | |
| CN209181509U (en) | A kind of meshbeltfurnace convenient for waste heat recycling | |
| CN2669967Y (en) | Dust humidifying agitator | |
| CN208898821U (en) | A kind of environmental protection and energy saving coal gas generating device | |
| CN216745617U (en) | Low-grade waste heat comprehensive utilization device | |
| CN208165922U (en) | A kind of screw conveyor screw blade | |
| CN214501290U (en) | Boiler flue gas waste heat recycling device | |
| CN209020367U (en) | A kind of stirring-type reaction kettle being more energy-saving and environmentally friendly | |
| CN211568912U (en) | Liquid chemical preparation prevents deposiing storage jar | |
| CN108252790B (en) | Environmental protection strenghthened type radiator fan | |
| CN113758052B (en) | Energy tower heat pump system | |
| CN111156821A (en) | Secondary aluminum solution furnace that stews | |
| CN215312305U (en) | Ammonium phosphate reaction tank for producing compound fertilizer | |
| CN221016060U (en) | Sodium hypochlorite generator | |
| CN211926538U (en) | Clinker cooling efficient grate cooler | |
| CN213834545U (en) | Ozone generator with built-in oxygenerator | |
| CN213480255U (en) | Ash discharging sealing device for boiler | |
| CN213066886U (en) | A stoving edulcoration device for fodder | |
| CN204140466U (en) | The anticorrosion air bells exhauster of air inducing type | |
| CN220405387U (en) | Water mixing device for development and utilization of middle-deep geothermal energy | |
| CN214636082U (en) | Thermal circulation device for solution mixing tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |