CN220026952U - Continuous synthesis production system for cymoxanil intermediate ethyl urea - Google Patents
Continuous synthesis production system for cymoxanil intermediate ethyl urea Download PDFInfo
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- CN220026952U CN220026952U CN202321357555.2U CN202321357555U CN220026952U CN 220026952 U CN220026952 U CN 220026952U CN 202321357555 U CN202321357555 U CN 202321357555U CN 220026952 U CN220026952 U CN 220026952U
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- CN
- China
- Prior art keywords
- cymoxanil
- ethyl urea
- production system
- continuous synthesis
- intermediate ethyl
- 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.)
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- RYECOJGRJDOGPP-UHFFFAOYSA-N Ethylurea Chemical compound CCNC(N)=O RYECOJGRJDOGPP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 18
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 18
- XERJKGMBORTKEO-VZUCSPMQSA-N (1e)-2-(ethylcarbamoylamino)-n-methoxy-2-oxoethanimidoyl cyanide Chemical compound CCNC(=O)NC(=O)C(\C#N)=N\OC XERJKGMBORTKEO-VZUCSPMQSA-N 0.000 title claims abstract description 17
- 239000005756 Cymoxanil Substances 0.000 title claims abstract description 17
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 claims abstract description 43
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 38
- 230000003068 static effect Effects 0.000 claims abstract description 28
- ZVCDLGYNFYZZOK-UHFFFAOYSA-M sodium cyanate Chemical compound [Na]OC#N ZVCDLGYNFYZZOK-UHFFFAOYSA-M 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000005303 weighing Methods 0.000 claims description 5
- 238000009776 industrial production Methods 0.000 abstract description 5
- 239000006227 byproduct Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 16
- 239000012266 salt solution Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000003947 ethylamines Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a continuous synthesis production system of cymoxanil intermediate ethyl urea, which comprises a raw material tank of ethylamine, a hydrochloric acid tank and a sodium cyanate storage bin, wherein the raw material tank of ethylamine and the hydrochloric acid tank are respectively connected with one end of a static mixer through a metering pump of ethylamine and a metering pump of hydrochloric acid, the other end of the static mixer is downwards connected with one end of a dynamic pipeline reactor, the sodium cyanate storage bin is connected with one end of the dynamic pipeline reactor through a fan, and the other end of the dynamic pipeline reactor is downwards connected with an ethyl urea storage tank through a discharge valve. The device has simple structure, can realize the continuous industrial production, and has no loss of raw materials, low byproducts and high product yield.
Description
Technical Field
The utility model relates to a chemical industrial production line, in particular to a continuous synthesis production system of cymoxanil intermediate ethyl urea.
Background
The method for producing monoethyl amine salt by using monoethyl amine and hydrochloric acid solution, and then reacting monoethyl amine salt with sodium cyanate is carried out in the reaction kettle, the reaction of monoethyl amine and hydrochloric acid solution is easy to cause partial reaction temperature to be higher in the reaction kettle, thus the volatilization loss of raw materials is caused by overtemperature, in addition, sodium cyanate is easy to hydrolyze in hot monoethyl amine salt solution, when sodium cyanate is fed in a large amount in industrial production, the reaction time is long, a part of sodium cyanate is hydrolyzed, the byproduct is more, the ethyl urea yield is lower, and the industrial production cost is high.
Disclosure of Invention
The utility model provides a continuous synthesis production system of cymoxanil intermediate ethyl urea, which has the advantages of simple structure, no raw material loss, low byproducts and high product yield, and can realize continuous industrial production.
The technical scheme adopted by the utility model is as follows: a continuous synthesis production system of cymoxanil intermediate ethyl urea comprises a monoethylamine raw material tank, a hydrochloric acid tank and a sodium cyanate storage bin, and is characterized in that: the raw material tank of monoethylamine and the hydrochloric acid tank are respectively connected with one end of a static mixer through a monoethylamine metering pump and a hydrochloric acid metering pump, the other end of the static mixer is downwards connected with one end of a dynamic pipeline reactor, a sodium cyanate bin is connected with one end of the dynamic pipeline reactor through a shut-off fan, and the other end of the dynamic pipeline reactor is downwards connected with an ethyl urea storage tank through a discharge valve.
The other end of the static mixer is downwards connected with one end of the static mixer through a cooling circulating pump and a cooler.
The cooling circulation pump is connected with a controller, and the controller is connected with a temperature sensor in the static mixer.
The temperature sensor is arranged in the middle of the static mixer.
The other end of the dynamic pipeline reactor is downwards connected with one end of the dynamic pipeline reactor through a heating circulating pump and a heater.
The heating circulating pump is connected with a controller, and the controller is connected with a temperature sensor in the dynamic pipeline mixer.
The temperature sensor is arranged in the middle of the dynamic pipeline mixer.
The heater is a heating heat exchanger.
The cooler is a cooling heat exchanger.
The sodium cyanate bin is a self-weighing bin, and the self-weighing bin is connected with the controller.
The beneficial effects of the utility model are as follows:
1. the continuous metering feeding of the ethylamine and the hydrochloric acid by using the static mixer replaces an intermittent reaction kettle mode, the feeding amount is accurately controlled, meanwhile, the reaction temperature is monitored by a temperature sensor in the static mixer, the loss of the ultra-high temperature raw material is avoided, a cooling circulation pump is started when the temperature reaches a set value of a controller, the mixed solution is sent to a cooler to be cooled and then returned to the static mixer for continuous reaction, and the purpose that the continuous feeding is sufficient and the temperature is not lost to generate the ethylamine salt solution is sent to the lower part for synthesis is achieved.
2. The sodium cyanate is weighed and metered to be sent to the dynamic pipeline reactor, and the continuous dynamic pipeline reactor is used for replacing an intermittent reaction kettle mode with a hot monoethylamine salt solution, so that sodium cyanate can be continuously added, the added sodium cyanate and monoethylamine salt solution are uniformly mixed in the dynamic pipeline reactor, the reaction temperature is monitored by a temperature sensor in the dynamic pipeline mixer, when the temperature is insufficient, a controller starts a heating circulating pump to send the mixed solution to a gas for heating for reaction, the condition that a large amount of sodium cyanate stays in a hot water solution for a long time is avoided, the reaction yield is improved, the generation of impurities is reduced, the generated ethyl urea is sent to an ethyl urea storage tank for collection, and the continuous temperature control reaction is suitable for industrial mass production.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: a raw material tank 1 for monoethyl amine, a metering pump 2 for monoethyl amine, a hydrochloric acid tank 3, a metering pump 4 for hydrochloric acid, a static mixer 5, a static mixing temperature sensor 6, a cooling circulation pump 7, a cooling heat exchanger 8, a controller 9, a dynamic pipeline reactor 11, a sodium cyanate stock bin 12, a shut-off fan 13, a dynamic reaction temperature sensor 14, a heating circulation pump 15, a heating heat exchanger 16, a discharge valve 17 and an ethylurea storage tank 18.
Detailed Description
Further description is provided below with reference to the accompanying drawings.
Fig. 1 shows: a continuous synthesis production system of cymoxanil intermediate ethyl urea comprises a monoethyl amine raw material tank 1, a monoethyl amine metering pump 2, a hydrochloric acid tank 3, a hydrochloric acid metering pump 4, a static mixer 5, a static mixing temperature sensor 6, a cooling circulating pump 7, a cooling heat exchanger 8, a controller 9, a dynamic pipeline reactor 11, a sodium cyanate bin 12, a shut-off fan 13, a dynamic reaction temperature sensor 14, a heating circulating pump 15, a heating heat exchanger 16, a discharge valve 17 and an ethyl urea storage tank 18. The raw material tank 1 for ethylamine and the hydrochloric acid tank 3 are respectively connected with one end of a static mixer 5 through a metering pump 2 for ethylamine and a metering pump 4 for hydrochloric acid, a static mixing temperature sensor 6 is arranged in the static mixer 5, the other end of the static mixer 5 is downwards connected with one end of the static mixer through a cooling circulation pump 7 and a cooling heat exchanger 8, the other end of the static mixer 5 is downwards connected with one end of a dynamic pipeline reactor 11, a sodium cyanate bin 12 is connected with one end of the dynamic pipeline reactor through a shut-off fan 13, a dynamic reaction temperature sensor 14 is arranged in the dynamic pipeline reactor, the other end of the dynamic pipeline reactor is downwards connected with one end of the dynamic pipeline reactor through a heating circulation pump 15 and a heating heat exchanger 16, and the other end of the dynamic pipeline reactor is downwards connected with an ethylurea storage tank 18 through a discharge valve 17.
In the embodiment, a monoethylamine metering pump 2, a hydrochloric acid metering pump 4, a static mixing temperature sensor 6, a cooling circulation pump 7, a cooling heat exchanger 8, a sodium cyanate storage bin 12, a shut-off fan 13, a dynamic reaction temperature sensor 14, a heating circulation pump 15, a heating heat exchanger 16 and a discharge valve 17 are all connected with a controller 9, wherein the sodium cyanate storage bin 12 is a self-weighing storage bin connected with the controller 9.
Claims (10)
1. A continuous synthesis production system of cymoxanil intermediate ethyl urea comprises a monoethylamine raw material tank, a hydrochloric acid tank and a sodium cyanate storage bin, and is characterized in that: the raw material tank of monoethylamine and the hydrochloric acid tank are respectively connected with one end of a static mixer through a monoethylamine metering pump and a hydrochloric acid metering pump, the other end of the static mixer is downwards connected with one end of a dynamic pipeline reactor, a sodium cyanate bin is connected with one end of the dynamic pipeline reactor through a shut-off fan, and the other end of the dynamic pipeline reactor is downwards connected with an ethyl urea storage tank through a discharge valve.
2. The continuous synthesis production system of cymoxanil intermediate ethyl urea according to claim 1, characterized in that: the other end of the static mixer is downwards connected with one end of the static mixer through a cooling circulating pump and a cooler.
3. A continuous synthesis production system of cymoxanil intermediate ethyl urea according to claim 2, characterized in that: the cooling circulation pump is connected with a controller, and the controller is connected with a temperature sensor in the static mixer.
4. A continuous synthesis production system for cymoxanil intermediate ethyl urea according to claim 3, characterized in that: the temperature sensor is arranged in the middle of the static mixer.
5. The continuous synthesis production system of cymoxanil intermediate ethyl urea according to claim 1, characterized in that: the other end of the dynamic pipeline reactor is downwards connected with one end of the dynamic pipeline reactor through a heating circulating pump and a heater.
6. The continuous synthesis production system of cymoxanil intermediate ethyl urea according to claim 5, wherein: the heating circulating pump is connected with a controller, and the controller is connected with a temperature sensor in the dynamic pipeline mixer.
7. The continuous synthesis production system of cymoxanil intermediate ethyl urea according to claim 6, characterized in that: the temperature sensor is arranged in the middle of the dynamic pipeline mixer.
8. A continuous synthesis production system for cymoxanil intermediate ethyl urea according to claim 5 or 6, characterized in that: the heater is a heating heat exchanger.
9. A continuous synthesis production system for cymoxanil intermediate ethyl urea according to claim 2 or 3, characterized in that: the cooler is a cooling heat exchanger.
10. The continuous synthesis production system of cymoxanil intermediate ethyl urea according to claim 1, characterized in that: the sodium cyanate bin is a self-weighing bin, and the self-weighing bin is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321357555.2U CN220026952U (en) | 2023-05-31 | 2023-05-31 | Continuous synthesis production system for cymoxanil intermediate ethyl urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321357555.2U CN220026952U (en) | 2023-05-31 | 2023-05-31 | Continuous synthesis production system for cymoxanil intermediate ethyl urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220026952U true CN220026952U (en) | 2023-11-17 |
Family
ID=88721542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321357555.2U Active CN220026952U (en) | 2023-05-31 | 2023-05-31 | Continuous synthesis production system for cymoxanil intermediate ethyl urea |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220026952U (en) |
-
2023
- 2023-05-31 CN CN202321357555.2U patent/CN220026952U/en active Active
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