CN219252150U - Production system of cellulose ether - Google Patents
Production system of cellulose ether Download PDFInfo
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- CN219252150U CN219252150U CN202320830566.1U CN202320830566U CN219252150U CN 219252150 U CN219252150 U CN 219252150U CN 202320830566 U CN202320830566 U CN 202320830566U CN 219252150 U CN219252150 U CN 219252150U
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Abstract
The utility model relates to the technical field of chemical product production, in particular to a production system of cellulose ether, which comprises a tail gas treatment device and a nitrogen gas supply device, wherein a cooling component comprises a first heat exchanger, the tail gas treatment device and the nitrogen gas supply device are connected through a first branch pipeline and a second branch pipeline, so that high-temperature tail gas and liquid nitrogen pass through the first heat exchanger, heat exchange occurs between the high-temperature tail gas and the liquid nitrogen in the first heat exchanger, the tail gas is cooled, the heat absorbed by the liquid nitrogen is changed into nitrogen, namely, the heat in the high-temperature tail gas is changed into the heat required by the liquid nitrogen into the nitrogen, the heat in the high-temperature tail gas is reused, the waste of resources is avoided, and the utilization rate of the resources is improved. Besides, the system can produce nitrogen through the liquid nitrogen through the first heat exchanger, can also produce nitrogen through the liquid nitrogen vaporizer, can select according to the requirement of nitrogen, and can also meet the use requirement of high-flow nitrogen.
Description
Technical Field
The utility model relates to the technical field of chemical product production, in particular to a production system of cellulose ether.
Background
The cellulose ether needs to use nitrogen gas of a certain amount in the production process, and nitrogen gas air feeder in the cellulose ether production system includes liquid nitrogen trunk line, liquid nitrogen vaporizer and nitrogen trunk line, and liquid nitrogen trunk line is connected with the import of liquid nitrogen vaporizer, and the export of liquid nitrogen vaporizer is connected with the nitrogen trunk line, and this nitrogen gas air feeder's workflow is: the liquid nitrogen enters the liquid nitrogen vaporizer through the liquid nitrogen main pipeline, becomes nitrogen after being processed by the liquid nitrogen vaporizer, enters the nitrogen main pipeline, and is finally conveyed to used equipment through the nitrogen main pipeline.
The cellulose ether needs to produce a large amount of high temperature tail gas in the production process, and tail gas processing apparatus in the cellulose ether production system includes tail gas admission line, cooling subassembly, edulcoration subassembly and tail gas emission pipeline, and tail gas admission line is connected with the import of cooling subassembly, and the import of edulcoration subassembly is connected with the export of cooling subassembly through tail gas intermediate pipeline, and the export of edulcoration subassembly is connected with the tail gas emission pipeline, and this tail gas processing apparatus's workflow is: the high-temperature tail gas enters the cooling component through the tail gas inlet pipeline for cooling treatment, the tail gas after cooling treatment enters the impurity removal component through the tail gas middle pipeline for impurity removal treatment, and the tail gas is discharged through the tail gas discharge pipeline after reaching the standard. At present, heat in high-temperature tail gas is not reused, so that resource waste is caused, and the resource utilization rate is low.
Disclosure of Invention
The utility model solves the technical problem of providing a production system of cellulose ether with higher resource utilization rate.
The technical scheme adopted for solving the technical problems is as follows: the production system of cellulose ether comprises a tail gas treatment device and a nitrogen gas supply device, wherein the tail gas treatment device comprises a tail gas inlet pipeline, a cooling component, a impurity removal component and a tail gas discharge pipeline, the tail gas inlet pipeline is connected with a first inlet of the cooling component, an inlet of the impurity removal component is connected with a first outlet of the cooling component through a tail gas middle pipeline, and an outlet of the impurity removal component is connected with the tail gas discharge pipeline;
the nitrogen gas supply device comprises a liquid nitrogen main pipeline, a liquid nitrogen vaporizer and a nitrogen main pipeline, wherein the liquid nitrogen main pipeline is connected with an inlet of the liquid nitrogen vaporizer, an outlet of the liquid nitrogen vaporizer is connected with the nitrogen main pipeline, the cooling component comprises a first heat exchanger, a first inlet and a first outlet of the cooling component are arranged on the first heat exchanger, the first inlet is communicated with the first outlet, a second inlet and a second outlet are further arranged on the first heat exchanger, and the second inlet is communicated with the second outlet;
the liquid nitrogen main pipeline comprises a main pipeline front section and a main pipeline rear section which are connected together, and further comprises a first branch pipeline and a second branch pipeline, wherein one end of the first branch pipeline is connected with the main pipeline front section, the other end of the first branch pipeline is connected with a second inlet of the first heat exchanger, one end of the second branch pipeline is connected with a second outlet of the first heat exchanger, and one end of the second branch pipeline is connected with the main pipeline rear section.
Further, a tail gas drying device is arranged on the tail gas inlet pipeline.
Further, the cooling assembly further comprises a second heat exchanger and a cooling pipeline, a first inlet of the cooling assembly is arranged on the first heat exchanger, a first outlet of the cooling assembly is arranged on the second heat exchanger, a third outlet is further arranged on the first heat exchanger, the first inlet is communicated with the third outlet, a third inlet, a fourth inlet and a fourth outlet are arranged on the second heat exchanger, the third inlet is communicated with the first outlet, the fourth inlet is communicated with the fourth outlet, and the third outlet of the first heat exchanger is connected with the third inlet of the second heat exchanger through the cooling pipeline;
the system also comprises a third branch pipeline and a fourth branch pipeline, wherein one end of the third branch pipeline is connected with the front section of the main pipeline, the other end of the third branch pipeline is connected with the fourth inlet of the second heat exchanger, one end of the fourth branch pipeline is connected with the fourth outlet of the second heat exchanger, and the other end of the fourth branch pipeline is connected with the rear section of the main pipeline or the second branch pipeline.
Further, the device also comprises a first gas-liquid separator and a second gas-liquid separator, wherein the first gas-liquid separator is arranged on the cooling pipeline, and the second gas-liquid separator is arranged on the tail gas middle pipeline.
Further, a first control valve is arranged on the first branch pipeline, a second control valve is arranged on the third branch pipeline, a third control valve is arranged on the liquid nitrogen main pipeline, and the third control valve is positioned at the rear side of the joint of the liquid nitrogen and the liquid nitrogen main pipeline and the joint of the third branch pipeline and the liquid nitrogen main pipeline sequentially passing through the first branch pipeline along the liquid nitrogen moving direction.
Further, the first control valve, the second control valve and the third control valve are all electromagnetic valves and further comprise a controller, and the first control valve, the second control valve and the third control valve are electrically connected with the controller.
Further, a pressure sensor is arranged on the nitrogen main pipeline and is electrically connected with the controller.
Further, be provided with first temperature sensor on the cooling pipeline, be provided with second temperature sensor on the tail gas intermediate pipeline, first temperature sensor, second temperature sensor all with controller electric connection.
Further, the device also comprises a main tail gas recovery liquid pipeline, a first tail gas recovery liquid pipeline and a second tail gas recovery liquid pipeline, wherein one end of the first tail gas recovery liquid pipeline is connected with the first gas-liquid separator, the other end of the first tail gas recovery liquid pipeline is connected with the main tail gas recovery liquid pipeline, one end of the second tail gas recovery liquid pipeline is connected with the second gas-liquid separator, and the other end of the second tail gas recovery liquid pipeline is connected with the main tail gas recovery liquid pipeline.
Further, the device also comprises a fourth control valve and a fifth control valve, wherein the fourth control valve is arranged on the first tail gas recovery liquid component pipeline, and the fifth control valve is arranged on the second tail gas recovery liquid component pipeline;
the fourth control valve and the fifth control valve are electromagnetic valves, and the fourth control valve and the fifth control valve are electrically connected with the controller.
The beneficial effects of the utility model are as follows: the cooling component comprises a first heat exchanger, the tail gas treatment device and the nitrogen gas supply device are connected through a first branch pipeline and a second branch pipeline, so that high-temperature tail gas and liquid nitrogen are both enabled to pass through the first heat exchanger, heat exchange is carried out on the high-temperature tail gas and the liquid nitrogen in the first heat exchanger, the tail gas is cooled, the heat absorbed by the liquid nitrogen becomes nitrogen, namely, the heat in the high-temperature tail gas becomes the required heat for changing the liquid nitrogen into the nitrogen, the heat reutilization in the high-temperature tail gas is realized, the waste of resources is avoided, and the utilization rate of the resources is improved. Besides, the system can produce nitrogen through the liquid nitrogen through the first heat exchanger, can also produce nitrogen through the liquid nitrogen vaporizer, can select according to the requirement of nitrogen, and can also meet the use requirement of high-flow nitrogen.
Drawings
FIG. 1 is a schematic flow chart of the present utility model;
the marking is as follows: the tail gas inlet pipeline 1, the tail gas middle pipeline 2, the tail gas discharge pipeline 3, the main pipeline front section 4, the liquid nitrogen vaporizer 5, the nitrogen main pipeline 6, the first heat exchanger 7, the main pipeline rear section 8, the first branch pipeline 9, the second branch pipeline 10, the tail gas drying device 11, the second heat exchanger 12, the cooling pipeline 13, the third branch pipeline 14, the fourth branch pipeline 15, the first gas-liquid separator 16, the second gas-liquid separator 17, the first control valve 18, the second control valve 19, the third control valve 20, the pressure sensor 21, the first temperature sensor 22, the second temperature sensor 23, the tail gas recovery liquid main pipeline 24, the first tail gas recovery liquid branch pipeline 25, the second tail gas recovery liquid branch pipeline 26, the fourth control valve 27, the fifth control valve 28 and the impurity removing component 29.
Detailed Description
The utility model is further described below with reference to the drawings and the detailed description.
As shown in fig. 1, the production system of cellulose ether of the utility model comprises a tail gas treatment device and a nitrogen gas supply device, wherein the tail gas treatment device comprises a tail gas inlet pipeline 1, a cooling component, a impurity removal component 29 and a tail gas discharge pipeline 3, the tail gas inlet pipeline 1 is connected with a first inlet of the cooling component, an inlet of the impurity removal component 29 is connected with a first outlet of the cooling component through a tail gas middle pipeline 2, and an outlet of the impurity removal component 29 is connected with the tail gas discharge pipeline 3;
the nitrogen gas supply device comprises a liquid nitrogen main pipeline, a liquid nitrogen vaporizer 5 and a nitrogen main pipeline 6, wherein the liquid nitrogen main pipeline is connected with an inlet of the liquid nitrogen vaporizer 5, an outlet of the liquid nitrogen vaporizer 5 is connected with the nitrogen main pipeline 6, the cooling component comprises a first heat exchanger 7, a first inlet and a first outlet of the cooling component are arranged on the first heat exchanger 7, the first inlet is communicated with the first outlet, a second inlet and a second outlet are further arranged on the first heat exchanger 7, and the second inlet is communicated with the second outlet;
the liquid nitrogen main pipeline comprises a main pipeline front section 4 and a main pipeline rear section 8 which are connected together, and further comprises a first branch pipeline 9 and a second branch pipeline 10, wherein one end of the first branch pipeline 9 is connected with the main pipeline front section 4, the other end of the first branch pipeline 9 is connected with a second inlet of the first heat exchanger 7, one end of the second branch pipeline 10 is connected with a second outlet of the first heat exchanger 7, and one end of the second branch pipeline 10 is connected with the main pipeline rear section 8.
In order to improve the cooling effect of the tail gas and ensure the quality of nitrogen, as shown in fig. 1, a tail gas drying device 11 is arranged on the tail gas inlet pipeline 1, and the tail gas is dried and dehydrated by the tail gas drying device 11 before entering the first heat exchanger 7, so that the heat exchange effect of the first heat exchanger 7 is ensured.
In order to improve the cooling effect of the cooling component on the tail gas and further improve the resource utilization rate, the cooling component further comprises a second heat exchanger 12 and a cooling pipeline 13, a first inlet of the cooling component is arranged on the first heat exchanger 7, a first outlet of the cooling component is arranged on the second heat exchanger 12, a third outlet is further arranged on the first heat exchanger 7, the first inlet is communicated with the third outlet, a third inlet, a fourth inlet and a fourth outlet are arranged on the second heat exchanger 12, the third inlet is communicated with the first outlet, the fourth inlet is communicated with the fourth outlet, and the third outlet of the first heat exchanger 7 is connected with the third inlet of the second heat exchanger 12 through the cooling pipeline 13;
the system further comprises a third branch pipeline 14 and a fourth branch pipeline 15, wherein one end of the third branch pipeline 14 is connected with the main pipeline front section 4, the other end of the third branch pipeline 14 is connected with a fourth inlet of the second heat exchanger 12, one end of the fourth branch pipeline 15 is connected with a fourth outlet of the second heat exchanger 12, and the other end of the fourth branch pipeline 15 is connected with the main pipeline rear section 8 or the second branch pipeline 10. The treatment process of the tail gas is as follows: after the high-temperature tail gas is dried and dehydrated by the tail gas drying device 11, the high-temperature tail gas firstly enters the first heat exchanger 7 for first cooling and condensing, then enters the second heat exchanger 12 for second cooling and condensing, finally enters the impurity removing component 29 for impurity removing treatment, and is discharged by the tail gas discharge pipeline 3 after reaching the treatment standard. The gas supply flow of the nitrogen gas supply device is as follows: part of liquid nitrogen enters the first heat exchanger 7 to absorb heat and become nitrogen, part of liquid nitrogen enters the second heat exchanger 12 to absorb heat and become nitrogen, and the rest of liquid nitrogen enters the liquid nitrogen vaporizer 5 to absorb heat and become nitrogen. Because the nitrogen produced by the first heat exchanger 7 and the second heat exchanger 12 is processed by the liquid nitrogen vaporizer 5, when the nitrogen produced by the first heat exchanger 7 and the second heat exchanger 12 does not meet the use requirement, the nitrogen can be processed again in the liquid nitrogen vaporizer 5, so that the quality of the produced nitrogen is ensured.
The number of the heat exchangers in the cooling assembly can be selected according to actual production conditions, and the number of the heat exchangers is preferably 2, namely the first heat exchanger 7 and the second heat exchanger 12.
In order to ensure the treatment effect of the tail gas, the utility model is further provided with a first gas-liquid separator 16 and a second gas-liquid separator 17, wherein the first gas-liquid separator 16 is arranged on the cooling pipeline 13, and the second gas-liquid separator 17 is arranged on the tail gas middle pipeline 2, after the cooling condensation treatment by the first heat exchanger 7 and the second heat exchanger 12. The tail gas after the cooling and condensing treatment of the first heat exchanger 7 enters the first gas-liquid separator 16, the liquid phase substance stays in the first gas-liquid separator 16, and the gas phase enters the second heat exchanger 12. The tail gas after the cooling and condensing treatment of the second heat exchanger 12 enters the second gas-liquid separator 17, the liquid phase substance stays in the second gas-liquid separator 17, and the gas phase enters the impurity removal component 29 for impurity removal treatment.
In order to facilitate the control of the production of nitrogen, the first branch pipe 9 is provided with a first control valve 18, the third branch pipe 14 is provided with a second control valve 19, the liquid nitrogen main pipe is provided with a third control valve 20, and the third control valve 20 is positioned at the rear side of the junction of the liquid nitrogen and the liquid nitrogen main pipe and the junction of the third branch pipe 14 and the liquid nitrogen main pipe sequentially passing through the first branch pipe 9 along the liquid nitrogen moving direction. The first control valve 18 controls whether the first branch pipeline 9 is communicated or not, so that whether the first heat exchanger 7 produces nitrogen or not is controlled; the second control valve 19 controls whether the third branch pipeline 14 is communicated or not, so that whether the second heat exchanger 12 produces nitrogen or not is controlled; the third control valve 20 controls whether the front section 4 of the main pipeline after the connection of the third branch pipeline 14 and the main pipeline of the liquid nitrogen is communicated, and thus whether the liquid nitrogen vaporizer 5 produces nitrogen is controlled.
To facilitate control, the automation level of the overall system is increased. The first control valve 18, the second control valve 19 and the third control valve 20 are all electromagnetic valves, and the utility model is also provided with a controller, wherein the first control valve 18, the second control valve 19 and the third control valve 20 are electrically connected with the controller, and the opening and closing and the opening valve quantity of the first control valve 18, the second control valve 19 and the third control valve 20 are automatically controlled by the controller. In order to further improve the automation level, a pressure sensor 21 is arranged on the nitrogen main pipeline 6, and the pressure sensor 21 is electrically connected with the controller; the cooling pipeline 13 is provided with a first temperature sensor 22, the tail gas middle pipeline 2 is provided with a second temperature sensor 23, and the first temperature sensor 22 and the second temperature sensor 23 are electrically connected with the controller. The pressure sensor 21 measures the pressure of the nitrogen flowing through the nitrogen main pipe 6, the first temperature sensor 22 measures the temperature of the exhaust gas flowing through the temperature reduction pipe 13, the second temperature sensor 23 measures the temperature of the exhaust gas flowing through the exhaust gas intermediate pipe 2, and the corresponding measured data are transmitted to the controller, and the controller automatically controls the opening and closing of the first control valve 18, the second control valve 19, the third control valve 20 and the opening valve amount according to the obtained data.
In order to realize recycling of the liquid substances, the utility model is further provided with a main tail gas recycling liquid pipeline 24, a first tail gas recycling liquid pipeline 25 and a second tail gas recycling liquid pipeline 26, wherein one end of the first tail gas recycling liquid pipeline 25 is connected with the first gas-liquid separator 16, the other end of the first tail gas recycling liquid pipeline 25 is connected with the main tail gas recycling liquid pipeline 24, one end of the second tail gas recycling liquid pipeline 26 is connected with the second gas-liquid separator 17, and the other end of the second tail gas recycling liquid pipeline 26 is connected with the main tail gas recycling liquid pipeline 24, as shown in fig. 1. In order to facilitate automatic control, a fourth control valve 27 and a fifth control valve 28 are further arranged, wherein the fourth control valve 27 is arranged on the first tail gas recovery liquid component pipeline 25, and the fifth control valve 28 is arranged on the second tail gas recovery liquid component pipeline 26; the fourth control valve 27 and the fifth control valve 28 are electromagnetic valves, and the fourth control valve 27 and the fifth control valve 28 are electrically connected with a controller.
In order to ensure the treatment effect of the exhaust gas, the impurity removing unit 29 is preferably an activated carbon canister.
In summary, the tail gas treatment device and the nitrogen gas supply device are connected through the first branch pipeline 9 and the second branch pipeline 10, so that the high-temperature tail gas and the liquid nitrogen pass through the first heat exchanger 7, the high-temperature tail gas and the liquid nitrogen are subjected to heat exchange in the first heat exchanger 7, the tail gas is cooled, the heat absorbed by the liquid nitrogen is changed into nitrogen, namely, the heat in the high-temperature tail gas is changed into the heat required by the liquid nitrogen to be changed into the nitrogen, the heat in the high-temperature tail gas is reused, the waste of resources is avoided, and the utilization rate of the resources is improved. Besides, the system can produce nitrogen through the liquid nitrogen through the first heat exchanger 7, can also produce nitrogen through the liquid nitrogen vaporizer 5, can select according to the requirement of nitrogen, and can also meet the use requirement of high-flow nitrogen.
Claims (10)
1. The production system of cellulose ether comprises a tail gas treatment device and a nitrogen gas supply device, wherein the tail gas treatment device comprises a tail gas inlet pipeline (1), a cooling component, a impurity removal component (29) and a tail gas discharge pipeline (3), the tail gas inlet pipeline (1) is connected with a first inlet of the cooling component, an inlet of the impurity removal component (29) is connected with a first outlet of the cooling component through a tail gas middle pipeline (2), and an outlet of the impurity removal component (29) is connected with the tail gas discharge pipeline (3);
the nitrogen gas supply device comprises a liquid nitrogen main pipeline, a liquid nitrogen vaporizer (5) and a nitrogen main pipeline (6), wherein the liquid nitrogen main pipeline is connected with an inlet of the liquid nitrogen vaporizer (5), and an outlet of the liquid nitrogen vaporizer (5) is connected with the nitrogen main pipeline (6), and the nitrogen gas supply device is characterized in that: the cooling assembly comprises a first heat exchanger (7), a first inlet and a first outlet of the cooling assembly are arranged on the first heat exchanger (7), the first inlet is communicated with the first outlet, a second inlet and a second outlet are also arranged on the first heat exchanger (7), and the second inlet is communicated with the second outlet;
the liquid nitrogen main pipeline is including trunk line anterior segment (4) and the trunk line back end (8) that link together, still includes first minute pipeline (9) and second minute pipeline (10), and first minute pipeline (9) one end is connected with trunk line anterior segment (4), and first minute pipeline (9) other end is connected with the second import of first heat exchanger (7), and second minute pipeline (10) one end is connected with the second export of first heat exchanger (7), and second minute pipeline (10) one end is connected with trunk line back end (8).
2. The cellulose ether production system of claim 1, wherein: the tail gas inlet pipeline (1) is provided with a tail gas drying device (11).
3. The cellulose ether production system of claim 1, wherein: the cooling assembly further comprises a second heat exchanger (12) and a cooling pipeline (13), a first inlet of the cooling assembly is arranged on the first heat exchanger (7), a first outlet of the cooling assembly is arranged on the second heat exchanger (12), a third outlet is further arranged on the first heat exchanger (7), the first inlet is communicated with the third outlet, a third inlet, a fourth inlet and a fourth outlet are arranged on the second heat exchanger (12), the third inlet is communicated with the first outlet, the fourth inlet is communicated with the fourth outlet, and the third outlet of the first heat exchanger (7) is connected with the third inlet of the second heat exchanger (12) through the cooling pipeline (13);
the novel heat exchanger further comprises a third branch pipeline (14) and a fourth branch pipeline (15), one end of the third branch pipeline (14) is connected with the front section (4) of the main pipeline, the other end of the third branch pipeline (14) is connected with a fourth inlet of the second heat exchanger (12), one end of the fourth branch pipeline (15) is connected with a fourth outlet of the second heat exchanger (12), and the other end of the fourth branch pipeline (15) is connected with the rear section (8) of the main pipeline or the second branch pipeline (10).
4. The cellulose ether production system of claim 3, wherein: the device further comprises a first gas-liquid separator (16) and a second gas-liquid separator (17), wherein the first gas-liquid separator (16) is arranged on the cooling pipeline (13), and the second gas-liquid separator (17) is arranged on the tail gas middle pipeline (2).
5. The cellulose ether production system of claim 3, wherein: the first branch pipeline (9) is provided with a first control valve (18), the third branch pipeline (14) is provided with a second control valve (19), the liquid nitrogen main pipeline is provided with a third control valve (20), and the third control valve (20) is positioned at the rear side of the joint of the liquid nitrogen and the liquid nitrogen main pipeline and the third branch pipeline (14) along the liquid nitrogen moving direction, and the joint of the liquid nitrogen and the liquid nitrogen main pipeline sequentially passes through the first branch pipeline (9).
6. The cellulose ether production system of claim 5, wherein: the first control valve (18), the second control valve (19) and the third control valve (20) are all electromagnetic valves, and further comprise a controller, and the first control valve (18), the second control valve (19) and the third control valve (20) are electrically connected with the controller.
7. The cellulose ether production system of claim 6, wherein: the nitrogen main pipeline (6) is provided with a pressure sensor (21), and the pressure sensor (21) is electrically connected with the controller.
8. The cellulose ether production system of claim 7, wherein: be provided with first temperature sensor (22) on cooling pipeline (13), be provided with second temperature sensor (23) on tail gas intermediate pipeline (2), first temperature sensor (22), second temperature sensor (23) all with controller electric connection.
9. The production system of a cellulose ether according to any one of claims 6 to 8, characterized in that: still include tail gas recovery liquid trunk line (24), first tail gas recovery liquid divides pipeline (25) and second tail gas recovery liquid divides pipeline (26), first tail gas recovery liquid divides pipeline (25) one end to be connected with first vapour and liquid separator (16), first tail gas recovery liquid divides pipeline (25) other end to be connected with tail gas recovery liquid trunk line (24), second tail gas recovery liquid divides pipeline (26) one end to be connected with second vapour and liquid separator (17), second tail gas recovery liquid divides pipeline (26) other end to be connected with tail gas recovery liquid trunk line (24).
10. The cellulose ether production system of claim 9, wherein: the device also comprises a fourth control valve (27) and a fifth control valve (28), wherein the fourth control valve (27) is arranged on the first tail gas recovery liquid separation pipeline (25), and the fifth control valve (28) is arranged on the second tail gas recovery liquid separation pipeline (26);
the fourth control valve (27) and the fifth control valve (28) are electromagnetic valves, and the fourth control valve (27) and the fifth control valve (28) are electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320830566.1U CN219252150U (en) | 2023-04-14 | 2023-04-14 | Production system of cellulose ether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320830566.1U CN219252150U (en) | 2023-04-14 | 2023-04-14 | Production system of cellulose ether |
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| Publication Number | Publication Date |
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| CN219252150U true CN219252150U (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320830566.1U Active CN219252150U (en) | 2023-04-14 | 2023-04-14 | Production system of cellulose ether |
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| CN (1) | CN219252150U (en) |
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