CN210965062U - Sleeve type micro-channel reactor - Google Patents
Sleeve type micro-channel reactor Download PDFInfo
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- CN210965062U CN210965062U CN201921872087.6U CN201921872087U CN210965062U CN 210965062 U CN210965062 U CN 210965062U CN 201921872087 U CN201921872087 U CN 201921872087U CN 210965062 U CN210965062 U CN 210965062U
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Abstract
The utility model relates to a chemical industry technical field discloses a bushing type microchannel reactor, including the barrel, the inside a plurality of cavity that is equipped with of barrel separates through the baffle between the adjacent cavity, baffle outside mounting flange feeds through the little logical annular space that a plurality of pipelines formed between the adjacent cavity. The utility model relates to a bushing type microchannel reactor, rational in infrastructure, the modern design has accomplished and has mixed in the annular space microchannel, and the reaction in the annular space microchannel exchanges heat in the annular space microchannel. The mass transfer and heat transfer are enhanced. The reaction efficiency is increased. Each cavity can be detached through the flange, so that the cleaning and the maintenance are convenient. Compared with a plate-type microchannel reactor, the temperature and pressure of the sleeve-type microchannel reactor have no upper limit use requirements, and the structure is safe and reliable.
Description
Technical Field
The utility model relates to the technical field of chemical industry, specifically a bushing type microchannel reactor.
Background
The micro-chemical technology is a leading-edge research field of modern chemical industry, which is started in the nineties of the twentieth century, provides a brand-new technology for solving various problems in the chemical production process, and is recognized as one of leading-edge technologies in the chemical engineering field. The microchannel reactor is a chemical reaction system with micron-sized unit reaction interface scale, has the characteristics of microscale, short diffusion distance, large specific surface area, small volume and the like, has very strong capacity in the aspects of mass transfer, heat transfer, reaction efficiency and the like, and can be applied to gas-liquid, liquid-liquid and gas-liquid-solid reactions.
However, the existing plate-type microchannel reactor has the problems of small treatment capacity, large investment, complex manufacturing process, incapability of bearing higher temperature and pressure, easiness in blockage, incapability of overhauling and the like, and is difficult to be industrially applied on a large scale. The sleeve type micro-channel reactor has the advantages of large treatment capacity, small investment, simple manufacturing process, no limitation on pressure and temperature, capability of being disassembled for maintenance and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bushing type microchannel reactor to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a bushing type microchannel reactor, includes the barrel, and the barrel is inside to be equipped with a plurality of cavity, separates through the tube sheet between the adjacent cavity, tube sheet outside mounting flange communicates through the little logical annular space that a plurality of pipelines formed between the adjacent cavity.
As a further aspect of the present invention: the cavity is 6, from the top down in proper order for cold fluid tube side intake to gather the chamber, cold fluid tube side goes out water and gathers chamber, reaction resultant gathers chamber, cold fluid shell side chamber, raw materials A and gathers the chamber with raw materials B, cold fluid tube side intake gathers chamber and cold fluid tube side play water and gathers the chamber between the chamber and link to each other through the little through annular gap that first pipeline and second pipeline formed, and reaction resultant gathers chamber and raw materials A and gathers the chamber and link to each other through the little through annular gap that third pipeline and second pipeline formed, and during first pipeline inserted the second pipeline, during the second pipeline inserted the third pipeline, raw materials B gathered the chamber and raw materials A and gathers and be equipped with the fourth pipeline between the chamber, during the fourth pipeline inserted the third pipeline, fourth pipeline top middle part is equipped with mixed micropore.
As a further aspect of the present invention: the cavity is 6, collects chamber, raw materials A and collects chamber, cold fluid shell side chamber, reaction resultant and collects chamber, cold fluid tube pass play water and collect chamber and cold fluid tube pass intake water and collect the chamber for raw materials B collects chamber, raw materials A in proper order from the top down, cold fluid tube pass intake water collects chamber and cold fluid tube pass play water and collects the chamber between link to each other through the little through annular gap that first pipeline and second pipeline formed, and reaction resultant collects chamber and raw materials A and collects chamber and link to each other through the little through annular gap that third pipeline and second pipeline formed, and during first pipeline inserted the second pipeline, during the second pipeline inserted the third pipeline, raw materials B collected the chamber and raw materials A and collected and is equipped with the fourth pipeline between the chamber, during the fourth pipeline inserted the third pipeline, fourth pipeline top middle part is equipped with mixed micropore.
As a further aspect of the present invention: the cavity is 5, from the top down for cold fluid tube side intake in proper order gather the chamber, cold fluid tube side goes out that water gathers the chamber, the reaction resultant gathers chamber, cold fluid shell side chamber and raw materials B and gathers the chamber, cold fluid tube side intake gathers chamber and cold fluid tube side play water and gathers the chamber between and link to each other through the annular gap that passes through a little that first pipeline and second pipeline formed, and the reaction resultant gathers chamber and raw materials B and gathers the chamber and link to each other through the annular gap that passes through a little that third pipeline and second pipeline formed, and first pipeline inserts in the second pipeline, and the second pipeline inserts in the third pipeline.
As a further aspect of the present invention: the cavity is 5, from the top down for cold fluid tube side intake in proper order gather the chamber, cold fluid shell side chamber, reaction resultant gathers the chamber, cold fluid tube side goes out water and gathers chamber and raw materials B and gather the chamber, raw materials B gathers chamber and cold fluid tube side play water and gathers the chamber between the chamber and link to each other through the little annular gap that first pipeline and second pipeline formed, and reaction resultant gathers chamber and cold fluid tube side intake and gathers the chamber and link to each other through the little annular gap that third pipeline and second pipeline formed, and first pipeline inserts in the second pipeline, and the second pipeline inserts in the third pipeline.
As a further aspect of the present invention: the cavity is 4, from the top down collects the chamber for raw materials A in proper order, raw materials B collects the chamber, and cold fluid shell side chamber and reaction product collect the chamber, and raw materials B collects the chamber and reaction product and collects and link to each other through the little through annular space that first pipeline and second pipeline formed between the chamber, and during first pipeline inserted the second pipeline, raw materials A got into the little through annular space between first pipeline and the second pipeline through the mixed micropore on the first pipeline.
As a further aspect of the present invention: the number of the cavities is 4, the reaction product collecting cavity, the cold fluid shell pass cavity, the raw material B collecting cavity and the raw material A collecting cavity are sequentially arranged from top to bottom, the raw material B collecting cavity and the reaction product collecting cavity are connected through a micro-through annular gap formed by a first pipeline and a second pipeline, the first pipeline is inserted into the second pipeline, and the raw material A enters the micro-through annular gap between the first pipeline and the second pipeline through a mixed micro-hole on the first pipeline.
As a further aspect of the present invention: and a plurality of baffle plates are arranged in the cold fluid shell pass cavity.
As a further aspect of the present invention: the cold fluid tube side water inlet collection cavity comprises a cold fluid tube side water inlet collection cavity, a cylinder body bottom end and a shell side, wherein a cooling fluid pipeline inlet is formed in the top end of the cold fluid tube side water inlet collection cavity, a shell end is formed in the bottom end of the cylinder body, a material inlet B is formed in the middle of the bottom end of the shell end, and a cold fluid tube side outlet, a reactant outlet, a cold fluid shell side inlet and a material inlet A are sequentially formed in the middle of the cold fluid tube side water outlet collection cavity, a reaction product.
Compared with the prior art, the beneficial effects of the utility model are that:
the sleeve type microchannel reactor is reasonable in structure and novel in design, and achieves mixing in the annular space microchannel, reaction in the annular space microchannel and heat exchange in the annular space microchannel. The mass transfer and heat transfer are enhanced. The reaction efficiency is increased. Each cavity can be detached through the flange, so that the cleaning and the maintenance are convenient. Compared with a plate-type microchannel reactor, the temperature and pressure of the sleeve-type microchannel reactor have no upper limit use requirements, and the structure is safe and reliable.
Drawings
FIG. 1 is a schematic structural diagram of a double pipe microchannel reactor.
FIG. 2 is a schematic structural view of example 2 in a double pipe microchannel reactor.
FIG. 3 is a schematic structural view of example 3 in a double pipe microchannel reactor.
FIG. 4 is a schematic structural view of example 4 in a double pipe microchannel reactor.
FIG. 5 is a schematic structural view of example 5 in a double pipe microchannel reactor.
FIG. 6 is a schematic structural view of example 6 in a double pipe microchannel reactor.
FIG. 7 is a schematic diagram of the mixing of feed A and feed B in a double pipe microchannel reactor.
In the figure: 1-cold fluid tube pass water inlet collecting cavity, 2-cold fluid tube pass water outlet collecting cavity, 3-reaction product collecting cavity, 4-cold fluid shell pass cavity, 5-raw material A collecting cavity, 6-raw material B collecting cavity, 7-first pipeline, 8-second pipeline, 9-third pipeline, 10-fourth pipeline, 11-baffle plate, 12-cylinder, 13-tube plate, 14-flange, 15-end enclosure, 16-B material inlet, 17-A material inlet, 18-cold fluid shell pass inlet, 19-cold fluid shell pass outlet, 20-reactant outlet, 21-cold fluid tube pass outlet, 22-cold fluid tube pass inlet and 23-mixing micropore.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a bushing type microchannel reactor, includes barrel 12, and barrel 12 is inside to be equipped with a plurality of cavity, separates through tube sheet 13 between the adjacent cavity, 13 outside tube sheet installation flanges 14 communicate through the little logical annular space that a plurality of pipelines formed between the adjacent cavity, a plurality of baffling boards 11 of cold fluid shell side cavity 4 internally mounted. The cold fluid tube side inlet water collection cavity 1 is provided with a cold fluid tube side inlet 22 at the top end, the cylinder body 12 is provided with a sealing head 15 at the bottom end, the middle part of the bottom end of the sealing head 15 is provided with a material inlet B16, and the middle parts of the cold fluid tube side outlet water collection cavity 2, the reaction product collection cavity 3, the cold fluid shell side cavity 4 and the raw material A collection cavity 5 are sequentially provided with a cold fluid tube side outlet 21, a reactant outlet 20, a cold fluid shell side outlet 19, a cold fluid shell side inlet 18 and a material inlet A17.
Tube pass cold fluid flow direction: the cold fluid enters the cold fluid tube pass water inlet gathering cavity 1 from the cold fluid tube pass inlet 22, enters the first pipeline 7 from top to bottom, enters the cold fluid tube pass water outlet gathering cavity 2 from an annular gap formed by the first pipeline 7 and the second pipeline 8 from a bottom to top channel after reaching the bottom, and exits the reactor from the cold fluid tube pass outlet 21.
Shell-side cold fluid flow: the cold fluid enters the cold fluid shell-side chamber 4 through the cold fluid shell-side inlet 18, and is deflected by the deflector 11 and exits the reaction through the cold fluid shell-side outlet 19.
The first pipeline 7, the second pipeline 8 and the fourth pipeline 10 are welded at one end, and the other end is a free end, so that the problem of thermal stress does not exist. The raw material A enters the raw material A collecting cavity 5 through the material inlet 17A and enters an annular space formed by the third pipeline 9 and the fourth pipeline 10, the raw material B enters the reactant B collecting cavity 6 through the material inlet 16B and enters through the fourth pipeline 10, the raw material B is mixed with the raw material A in the annular space and then enters the annular space of the third pipeline 9 and the fourth pipeline 8, the raw material A enters the reaction product collecting cavity 3 after the reaction is finished, and the raw material A is discharged from the reactor through the reactant outlet 20
Example 1
Referring to fig. 1 and 7, in the embodiment of the present invention, there is a double pipe type microchannel reactor, the number of the cavities is 6, and from top to bottom, there are a cold fluid pipe process water inlet collecting cavity 1, a cold fluid pipe process water outlet collecting cavity 2, a reaction product collecting cavity 3, a cold fluid shell process cavity 4, a raw material a collecting cavity 5 and a raw material B collecting cavity 6 in sequence, the cold fluid pipe process water inlet collecting cavity 1 and the cold fluid pipe process water outlet collecting cavity 2 are connected through a micro through annular gap formed by a first pipe 7 and a second pipe 8, the reaction product collecting cavity 3 and the raw material a collecting cavity 5 are connected through a micro through annular gap formed by a third pipe 9 and a second pipe 8, the first pipe 7 is inserted into the second pipe 8, the second pipe 8 is inserted into the third pipe 9, a fourth pipe 10 is arranged between the raw material B collecting cavity 6 and the raw material a collecting cavity 5, the fourth pipe 10 is inserted into the third pipe 9, and a mixing micropore 23 is formed in the middle of the top end of the fourth pipeline 10.
Example 2
Referring to fig. 2, the number of the cavity bodies of the sleeve-type microchannel reactor is 6, and the cavity bodies sequentially comprise a cold fluid tube pass raw material B collecting cavity 6, a raw material A collecting cavity 5, a cold fluid shell pass cavity 4, a reaction product collecting cavity 3, a cold fluid tube pass water outlet collecting cavity 2 and a water inlet collecting cavity 1 from top to bottom, the cold fluid tube pass water inlet collecting cavity 1 and the cold fluid tube pass water outlet collecting cavity 2 are connected through a micro-through annular gap formed by a first pipeline 7 and a second pipeline 8, the reaction product collecting cavity 3 and the raw material A collecting cavity 5 are connected through a micro-through annular gap formed by a third pipeline 9 and the second pipeline 8, the first pipeline 7 is inserted into the second pipeline 8, the second pipeline 8 is inserted into the third pipeline 9, a fourth pipeline 10 is arranged between the raw material B collecting cavity 6 and the raw material A collecting cavity 5, the fourth pipeline 10 is inserted into the third pipeline 9, and a mixing micropore 23 is arranged in the middle of the top end of the fourth pipeline 10.
Example 3
Referring to fig. 3, in the embodiment of the utility model, a bushing type microchannel reactor, the cavity is 5, from the top down collects chamber 1 for cold fluid tube side inflow in proper order, cold fluid tube side outflow collects chamber 2, reaction product collects chamber 3, cold fluid shell side chamber 4 and raw materials B and collects chamber 6, cold fluid tube side inflow collects chamber 1 and cold fluid tube side outflow and collects the little through annular gap that forms through first pipeline 7 and second pipeline 8 between the chamber 2 and link to each other, and reaction product collects chamber 3 and raw materials B and collects chamber 6 and link to each other through the little through annular gap that third pipeline 9 and second pipeline 8 formed, and first pipeline 7 inserts in the second pipeline 8, and second pipeline 8 inserts in the third pipeline 9.
Example 4
Referring to fig. 4, in the embodiment of the utility model, a bushing type microchannel reactor, the cavity is 5, from the top down collects chamber 1, cold fluid shell side chamber 4, reaction product for cold fluid tube side inflow in proper order, and cold fluid tube side goes out water and collects chamber 2 and raw materials B and collects chamber 6, raw materials B collects chamber 6 and cold fluid tube side play water and collects the little through annular gap that forms through first pipeline 7 and second pipeline 8 between the chamber 2 and link to each other, and reaction product collects chamber 3 and cold fluid tube side inflow and collects chamber 1 and link to each other through the little through annular gap that third pipeline 9 and second pipeline 8 formed, and first pipeline 7 inserts in the second pipeline 8, and second pipeline 8 inserts in the third pipeline 9.
Example 5
Referring to fig. 5, in the embodiment of the utility model, a bushing type microchannel reactor, the cavity is 4, from the top in proper order for raw materials A collect chamber 5, raw materials B collects chamber 6, cold fluid shell side chamber 4 and reaction product collect chamber 3, raw materials B collects chamber 6 and reaction product and collects the little through annular space that forms between the chamber 3 through first pipeline 7 and 8 second pipes and link to each other, first pipeline 7 inserts in the second pipeline 8, raw materials A gets into the little through annular space between first pipeline 7 and the second pipeline 8 through mixed micropore 23 above first pipeline 7
Example 6
Referring to fig. 6, in the embodiment of the utility model, a bushing type microchannel reactor, the cavity is 4, from the top in proper order for reaction product collect chamber 3, cold fluid shell side chamber 4, raw materials B collect chamber 6 and raw materials A collect chamber 5, raw materials B collects chamber 6 and reaction product and collects the little through annular gap that forms between the chamber 3 through first pipeline 7 and 8 second pipes and link to each other, first pipeline 7 inserts in the second pipeline 8, raw materials A gets into the little through annular gap between first pipeline 7 and the second pipeline 8 through mixed micropore 23 above first pipeline 7.
It should be noted that a single reaction in this application can design several channels, not just one channel provided in this embodiment.
It should be noted that the flange connection in this application may be welded instead.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a bushing type microchannel reactor, includes barrel (12), and barrel (12) are inside to be equipped with a plurality of cavity, separate through tube sheet (13) between the adjacent cavity, tube sheet (13) outside mounting flange (14), its characterized in that communicates through the little logical annular space that a plurality of pipelines formed between the adjacent cavity.
2. The double pipe microchannel reactor according to claim 1, wherein the number of the chambers is 6, and the chambers are a cold fluid pipe side water inlet collecting chamber (1), a cold fluid pipe side water outlet collecting chamber (2), a reaction product collecting chamber (3), a cold fluid shell side chamber (4), a raw material A collecting chamber (5) and a raw material B collecting chamber (6) from top to bottom, the cold fluid pipe side water inlet collecting chamber (1) and the cold fluid pipe side water outlet collecting chamber (2) are connected through an annular gap formed by a first pipe (7) and a second pipe (8), the reaction product collecting chamber (3) and the raw material A collecting chamber (5) are connected through an annular gap formed by a third pipe (9) and the second pipe (8), the first pipe (7) is inserted into the second pipe (8), the second pipe (8) is inserted into the third pipe (9), a fourth pipe (10) is arranged between the raw material B collecting chamber (6) and the raw material A collecting chamber (5), the fourth pipeline (10) is inserted into the third pipeline (9), and the middle of the top end of the fourth pipeline (10) is provided with a mixing micropore (23).
3. The telescopic microchannel reactor according to claim 1, wherein the number of the chambers is 6, and the chambers are a raw material B collecting chamber (6), a raw material A collecting chamber (5), a cold fluid shell-side chamber (4), a reaction product collecting chamber (3), a cold fluid tube-side outlet water collecting chamber (2) and a cold fluid tube-side inlet water collecting chamber (1) from top to bottom, the cold fluid tube-side inlet water collecting chamber (1) and the cold fluid tube-side outlet water collecting chamber (2) are connected through a micro through annular gap formed by a first pipeline (7) and a second pipeline (8), the reaction product collecting chamber (3) and the raw material A collecting chamber (5) are connected through a micro through annular gap formed by a third pipeline (9) and the second pipeline (8), the first pipeline (7) is inserted into the second pipeline (8), the second pipeline (8) is inserted into the third pipeline (9), a fourth pipeline (10) is arranged between the raw material B collecting cavity (6) and the raw material A collecting cavity (5), the fourth pipeline (10) is inserted into the third pipeline (9), and a mixing micropore (23) is formed in the middle of the top end of the fourth pipeline (10).
4. The tube-in-tube microchannel reactor as recited in claim 1, wherein the number of the cavities is 5, and the cavities are a cold fluid tube-pass water inlet collecting cavity (1), a cold fluid tube-pass water outlet collecting cavity (2), a reaction product collecting cavity (3), a cold fluid shell-pass cavity (4) and a raw material B collecting cavity (6) from top to bottom, the cold fluid tube-pass water inlet collecting cavity (1) and the cold fluid tube-pass water outlet collecting cavity (2) are connected through a micro-through annular gap formed by a first pipeline (7) and a second pipeline (8), the reaction product collecting cavity (3) and the raw material B collecting cavity (6) are connected through a micro-through annular gap formed by a third pipeline (9) and the second pipeline (8), the first pipeline (7) is inserted into the second pipeline (8), and the second pipeline (8) is inserted into the third pipeline (9).
5. The tube-in-tube microchannel reactor as recited in claim 1, wherein the number of the cavities is 5, and the cavities are a cold fluid tube-pass water inlet collecting cavity (1), a cold fluid shell-pass cavity (4), a reaction product collecting cavity (3), a cold fluid tube-pass water outlet collecting cavity (2) and a raw material B collecting cavity (6) from top to bottom, the raw material B collecting cavity (6) and the cold fluid tube-pass water outlet collecting cavity (2) are connected through a micro through annular gap formed by a first pipeline (7) and a second pipeline (8), the reaction product collecting cavity (3) and the cold fluid tube-pass water inlet collecting cavity (1) are connected through a micro through annular gap formed by a third pipeline (9) and the second pipeline (8), the first pipeline (7) is inserted into the second pipeline (8), and the second pipeline (8) is inserted into the third pipeline (9).
6. The tube-in-tube microchannel reactor according to any one of claims 2 to 5, wherein a plurality of baffles (11) are installed inside the cold fluid shell-side chamber (4).
7. The sleeve type microchannel reactor according to claim 2 or 3, wherein a cold fluid tube pass inlet (22) is installed at the top end of the cold fluid tube pass water inlet collecting cavity (1), a sealing head (15) is installed at the bottom end of the cylinder (12), a material inlet (16) B is installed in the middle of the bottom end of the sealing head (15), and a cold fluid tube pass outlet water collecting cavity (2), a reaction product collecting cavity (3), a cold fluid shell pass cavity (4) and a raw material A collecting cavity (5) are sequentially provided with a cold fluid tube pass outlet (21), a reactant outlet (20), a cold fluid shell pass outlet (19), a cold fluid shell pass inlet (18) and a material inlet (17) in the middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921872087.6U CN210965062U (en) | 2019-11-02 | 2019-11-02 | Sleeve type micro-channel reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921872087.6U CN210965062U (en) | 2019-11-02 | 2019-11-02 | Sleeve type micro-channel reactor |
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| CN210965062U true CN210965062U (en) | 2020-07-10 |
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| CN201921872087.6U Expired - Fee Related CN210965062U (en) | 2019-11-02 | 2019-11-02 | Sleeve type micro-channel reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860261A (en) * | 2019-11-02 | 2020-03-06 | 南京明锐化工科技有限公司 | Sleeve type micro-channel reactor |
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2019
- 2019-11-02 CN CN201921872087.6U patent/CN210965062U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860261A (en) * | 2019-11-02 | 2020-03-06 | 南京明锐化工科技有限公司 | Sleeve type micro-channel reactor |
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Address after: Room 301, 3 / F, Huitong Creative Industry Park, 96 Shidai Avenue, Liuhe District, Nanjing, Jiangsu, 211500 Patentee after: Nanjing Mingrui Chemical Technology Co.,Ltd. Address before: 210000 room 3031, building A1, no.216, puliu North Road, Getang street, Jiangbei new district, Nanjing City, Jiangsu Province Patentee before: Nanjing Mingrui Chemical Technology Co.,Ltd. |
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Granted publication date: 20200710 Termination date: 20211102 |