CN210752656U - Reaction unit is used in NMMO production - Google Patents
Reaction unit is used in NMMO production Download PDFInfo
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- CN210752656U CN210752656U CN201921438085.6U CN201921438085U CN210752656U CN 210752656 U CN210752656 U CN 210752656U CN 201921438085 U CN201921438085 U CN 201921438085U CN 210752656 U CN210752656 U CN 210752656U
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Abstract
The utility model relates to a chemical industry equipment technical field especially relates to a reaction unit is used in NMMO production, including automatic feed ware, reation kettle, magnetic stirrers and controller, reation kettle's top is equipped with NMM feed inlet and hydrogen peroxide solution feed inlet, and automatic feed ware's discharge gate intercommunication reation kettle's hydrogen peroxide solution feed inlet, reation kettle's bottom is equipped with magnetic stirrers, and reation kettle's bottom inner wall is equipped with the rotor, and reation kettle's inside is equipped with temperature sensor, and reation kettle's the external portion of cauldron is equipped with and presss from both sides the cover, automatic feed ware, temperature sensor and solenoid valve electricity connection director respectively. The reaction rate and the reaction temperature can be controlled by utilizing the reaction device, and the yield and the quality of the product are ensured.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field especially relates to a reaction unit is used in NMMO production.
Background
Cellulose spinning with NMMO solvent system NMMO is considered the most promising cellulose solvent for development by virtue of its advantages in terms of solubility to fiber and water, quality of spinning and process. NMMO is tertiary amine oxide, and the synthesis method of the compound is various, and the more mature synthesis method at home and abroad mainly comprises two methods, namely a hydrogen peroxide peroxidation method and a molecular oxygen-aldehyde catalytic oxidation method. Wherein the hydrogen peroxide method is a method for preparing NMMO which is commonly used in China. However, during the synthesis of NMMO, the reaction needs to be heated at first, the heat release is started after the reaction is carried out for a period of time, the reaction temperature is difficult to control, the reaction rate is difficult to control, and the yield and the quality of the product are finally influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the defects of the prior art, the reaction device for NMMO production is provided, the reaction rate and the reaction temperature can be controlled by utilizing the reaction device, and the yield and the quality of products are ensured.
In order to solve the technical problem, the technical scheme of the utility model is that:
a reaction device for NMMO production comprises an automatic feeder, a reaction kettle, a magnetic stirrer and a controller, wherein an NMM feed inlet and a hydrogen peroxide feed inlet are formed in the top of the reaction kettle, a discharge outlet of the automatic feeder is communicated with the hydrogen peroxide feed inlet of the reaction kettle, the magnetic stirrer is arranged at the bottom of the reaction kettle, a rotor is arranged on the inner wall of the bottom of the reaction kettle, a temperature sensor is arranged inside the reaction kettle, a jacket is arranged outside the kettle body of the reaction kettle, a water inlet and a water outlet are formed in the jacket, the water inlet of the jacket is respectively connected with a heat medium input pipeline and a refrigerant input pipeline through three-way connectors, the water outlet is respectively connected with a heat medium output pipeline and a refrigerant output pipeline through three-way connectors, electromagnetic valves are respectively arranged on the heat medium input pipeline, the heat medium output pipeline, the refrigerant input pipeline and the refrigerant output, the automatic feeder, the temperature sensor and the electromagnetic valve are respectively and electrically connected with the controller.
As a technical scheme of changing the machine, the automatic feeder is a micro constant flow pump communicated with a hydrogen peroxide conveying pipeline.
As an improved technical scheme, one end of the heat medium input pipeline is connected with an oil bath groove.
As an improved technical scheme, one end of the refrigerant input pipeline is connected with a refrigerating machine through a condensation circulating pump.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
because the reaction device for NMMO production comprises an automatic feeder, a reaction kettle, a magnetic stirrer and a controller, the top of the reaction kettle is provided with an NMM feed inlet and a hydrogen peroxide feed inlet, the discharge outlet of the automatic feeder is communicated with the hydrogen peroxide feed inlet of the reaction kettle, the bottom of the reaction kettle is provided with the magnetic stirrer, the inner wall of the bottom of the reaction kettle is provided with a rotor, the inside of the reaction kettle is provided with a temperature sensor, the outside of the kettle body of the reaction kettle is provided with a jacket, the jacket is provided with a water inlet and a water outlet, the water inlet of the jacket is respectively connected with a heat medium input pipeline and a refrigerant input pipeline through a three-way connector, the water outlet is respectively connected with a heat medium output pipeline, the heating medium output pipeline, the refrigerant input pipeline and the refrigerant output pipeline are respectively provided with an electromagnetic valve, and the automatic feeder, the temperature sensor and the electromagnetic valve are respectively and electrically connected with the controller. During NMMO synthesis, raw material NMM is added into a reaction kettle from an NMM feed inlet, a magnetic stirrer is opened, and a rotor rotates to stir NMM; meanwhile, the electromagnetic valve on the heat medium input pipeline is opened through the controller (the electromagnetic valve on the refrigerant input pipeline is closed), hot water enters the jacket from the water inlet of the jacket along the heat medium input pipeline to heat the NMM,when the temperature reaches the reaction temperature, hot water is discharged through the heat medium output pipeline. The automatic feeder is turned on by the controller to enable H2O2At a certain speed from H2O2The feed inlet is dripped into NMM, the reaction starts at the moment, the temperature sensor transmits the temperature signal of the solution to the controller, the controller opens the electromagnetic valve on the refrigerant input pipeline (the electromagnetic valve of the heat medium input pipeline is closed), cold water enters the jacket from the water inlet along the refrigerant input pipeline at a certain speed, and the heat emitted by the reaction is absorbed, so that the reaction temperature is controlled within a minimum range until the reaction is finished. By adopting the reaction device, the dropping speed of hydrogen peroxide can be controlled, the reaction speed is further controlled, the reaction temperature of the feed liquid in the reaction kettle can be effectively controlled, the smooth proceeding of the reaction is ensured, and the yield and the quality of the product are greatly improved.
One end of the heat medium input pipeline is connected with an oil bath groove. Hot water in the oil bath groove enters the jacket through a heat medium input pipeline to heat materials in the reaction kettle. By adopting the device, the design is reasonable, and the temperature required by the reaction can be provided.
One end of the refrigerant input pipeline is connected with a refrigerating machine through a condensation circulating pump. The comdenstion water in the refrigerator passes through the condensation circulating pump and gets into along refrigerant input pipeline inside the cover that presss from both sides, to the heat cooling that emits in the reaction process, adopts above-mentioned device can effectually be to the material cooling in the reation kettle, effective control reaction temperature.
Drawings
FIG. 1 is a schematic structural view of a reaction apparatus for NMMO production according to the present invention;
the system comprises a reactor, a heating system, a cooling system and a control system, wherein the reactor comprises a reactor, a heater, a cooling system and a controller, wherein the heater comprises a 1-automatic feeder, a 2-reaction kettle, a 20-NMM feed inlet, a 21-hydrogen peroxide feed inlet, a 22-rotor, a 23-temperature sensor, a 24-jacket, a 240-water inlet, a 241-water outlet, a 3-magnetic stirrer, a 4-controller, a 5-heating medium input pipeline, a 6-cooling medium input pipeline, a 7-heating medium output pipeline, an 8-cooling medium output pipeline, a 9-electromagnetic.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A reaction device for NMMO production is shown in figure 1, and comprises an automatic feeder 1 (a micro constant flow pump communicated with a hydrogen peroxide delivery pipeline, a manufacturer is Baoding Lange), a reaction kettle 2, a magnetic stirrer 3 and a controller 4, wherein the top of the reaction kettle 2 is provided with an NMM feed inlet 20 and a hydrogen peroxide feed inlet 21, the discharge outlet of the automatic feeder 1 is communicated with the hydrogen peroxide feed inlet 21 of the reaction kettle 2, the bottom of the reaction kettle 2 is provided with the magnetic stirrer 3, the inner wall of the bottom of the reaction kettle 2 is provided with a rotor 22, the inside of the reaction kettle 2 is provided with a temperature sensor 23, the outside of the kettle body of the reaction kettle 2 is provided with a jacket 24, the jacket 24 is provided with a water inlet 240 and a water outlet 241, the water inlet 240 of the jacket 24 is respectively connected with a heat medium input pipeline 5 and a cold medium input pipeline 6 through a tee joint 13, the cold medium outlet 241, the heating medium input pipeline 5, the heating medium output pipeline 7, the refrigerant input pipeline 6 and the refrigerant output pipeline 8 are respectively provided with an electromagnetic valve 9, and the automatic feeder 1, the temperature sensor 23 and the electromagnetic valve 9 are respectively and electrically connected with the controller 4.
During NMMO synthesis, raw material NMM is added into a reaction kettle from an NMM feed inlet, a magnetic stirrer is opened, and a rotor rotates to stir NMM; meanwhile, the electromagnetic valve on the heat medium input pipeline is opened through the controller, hot water enters the jacket from the water inlet of the jacket along the heat medium input pipeline to heat the NMM, and after the temperature reaches the reaction temperature, the hot water is discharged through the heat medium output pipeline. The automatic feeder is turned on by the controller to enable H2O2At a certain speed from H2O2The feed inlet is dripped into the NMM, the reaction starts at the moment, the temperature sensor transmits the temperature signal of the solution to the controller, the controller opens the electromagnetic valve on the refrigerant input pipeline, cold water enters the jacket from the water inlet along the refrigerant input pipeline at a certain speed to absorb the heat emitted by the reaction, thereby controlling the reaction temperature within a minimum rangeUntil the reaction is finished.
Wherein an oil bath 10 is connected to one end of the heat medium input pipe 5. Hot water in the oil bath groove enters the jacket through a heat medium input pipeline to heat materials in the reaction kettle.
One end of the refrigerant input pipeline 6 is connected with a refrigerating machine 12 through a condensation circulating pump 11. Condensed water in the refrigerating machine enters the jacket through the condensation circulating pump along the refrigerant input pipeline, and the reaction temperature is effectively controlled by cooling heat emitted in the reaction process.
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 (4)
1. The utility model provides a reaction unit is used in NMMO production which characterized in that: the reactor comprises an automatic feeder, a reaction kettle, a magnetic stirrer and a controller, wherein an NMM (N-methyl-M) feed inlet and a hydrogen peroxide feed inlet are arranged at the top of the reaction kettle, a discharge outlet of the automatic feeder is communicated with the hydrogen peroxide feed inlet of the reaction kettle, the magnetic stirrer is arranged at the bottom of the reaction kettle, a rotor is arranged on the inner wall of the bottom of the reaction kettle, a temperature sensor is arranged inside the reaction kettle, a jacket is arranged outside a kettle body of the reaction kettle, a water inlet and a water outlet are arranged in the jacket, the water inlet of the jacket is respectively connected with a heat medium input pipeline and a refrigerant input pipeline through three-way connectors, the water outlet is respectively connected with a heat medium output pipeline and a refrigerant output pipeline through three-way connectors, electromagnetic valves are respectively arranged on the heat medium input pipeline, the heat medium output pipeline, the, The temperature sensor and the electromagnetic valve are respectively and electrically connected with the controller.
2. The reaction apparatus for NMMO production according to claim 1, wherein: the automatic feeder is a micro constant flow pump communicated with the hydrogen peroxide conveying pipeline.
3. The reaction apparatus for NMMO production according to claim 1, wherein: one end of the heat medium input pipeline is connected with an oil bath groove.
4. The reaction apparatus for NMMO production according to claim 1, wherein: one end of the refrigerant input pipeline is connected with a refrigerating machine through a condensation circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921438085.6U CN210752656U (en) | 2019-08-30 | 2019-08-30 | Reaction unit is used in NMMO production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921438085.6U CN210752656U (en) | 2019-08-30 | 2019-08-30 | Reaction unit is used in NMMO production |
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| CN210752656U true CN210752656U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112237895A (en) * | 2020-09-18 | 2021-01-19 | 浙江华勘环保科技有限公司 | Reation kettle based on expend with heat and contract with cold principle realization autoloading |
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2019
- 2019-08-30 CN CN201921438085.6U patent/CN210752656U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112237895A (en) * | 2020-09-18 | 2021-01-19 | 浙江华勘环保科技有限公司 | Reation kettle based on expend with heat and contract with cold principle realization autoloading |
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