CN217313400U - Long-chain alkyl trimethyl ammonium chloride synthesis device - Google Patents
Long-chain alkyl trimethyl ammonium chloride synthesis device Download PDFInfo
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- CN217313400U CN217313400U CN202220593440.2U CN202220593440U CN217313400U CN 217313400 U CN217313400 U CN 217313400U CN 202220593440 U CN202220593440 U CN 202220593440U CN 217313400 U CN217313400 U CN 217313400U
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Abstract
The utility model discloses a long-chain alkyl trimethyl ammonium chloride synthesis device, which comprises a reaction kettle provided with a jacket and a stirrer, five raw material storage tanks connected with the reaction kettle through respective feeding pipes, and a feeding valve arranged on each feeding pipe; the bottom of the reaction kettle is connected with a discharge pipe, the discharge pipe is provided with a discharge valve, the discharge pipe in front of the discharge valve is connected with a sprayer in the reaction kettle through a circulating pipe, and the circulating pipe is provided with a circulating pump; a spiral condenser pipe is arranged in the reaction kettle, and a liquid inlet pipe and a liquid outlet pipe which are connected with two ends of the condenser pipe are arranged on the reaction kettle; the utility model discloses a circulation backward flow spray set improves the conversion rate of reaction to reduce the quantity, the reduce cost of methane chloride, and the free amine content that obtains the product is lower, and has solved the produced methane chloride tail gas treatment problem of industrial intermittent type nature production, safety ring protects.
Description
Technical Field
The utility model relates to a synthesizer for long chain alkyl trimethyl ammonium chloride.
Background
Long-chain alkyl trimethyl ammonium chloride, such as dodecyl trimethyl ammonium chloride, is a cationic surfactant and can be used as a catalyst, an emulsifier, a disinfectant, a bactericide, an antistatic agent, etc. The main synthesis device in the industry at present adopts a reaction kettle provided with a jacket and a stirrer, raw material storage tanks connected with the reaction kettle through a feeding pipe, and a feeding valve arranged on the feeding pipe, and is prepared by introducing excessive methyl chloride into a closed reaction kettle for mixing and stirring under the heating condition, wherein the raw material storage tanks are used for introducing dodecyl dimethyl tertiary amine, an organic solvent and a catalyst. The monochloromethane is gas at low temperature and low pressure, the reaction is a gas-liquid two-phase reaction, the gas phase is concentrated on the upper layer of the reaction kettle, the liquid phase is concentrated on the lower layer of the reaction kettle, the gas-liquid two-phase contact area is small, the mass transfer efficiency is low, and the monochloromethane is required to be fully excessive on the premise of ensuring the conversion rate of the tertiary amine, so that the monochloromethane is wasted, and the content of free amine in the obtained product is higher; and the methane chloride is toxic and inflammable gas, the tail gas is not easy to treat, and the excessive methane chloride is treated by adopting an incinerator combustion method in most industries, but the waste gas generated by intermittent production is wasted by adopting the incinerator treatment method.
Disclosure of Invention
The utility model aims at prior art's the aforesaid is not enough, provides a long chain alkyl trimethyl ammonium chloride synthesizer, and it passes through circulation backward flow spray set, improves the conversion rate of reaction to reduce the quantity, the reduce cost of methane chloride, and the free amine content that obtains the product is lower, and has solved the produced methane chloride tail gas treatment problem of industrial intermittent type nature production, but reduction of equipment cost, safety ring protects.
In order to achieve the purpose, the long-chain alkyl trimethyl ammonium chloride synthesis device comprises a reaction kettle provided with a jacket and a stirrer, five raw material storage tanks connected with the reaction kettle through respective feeding pipes, and a feeding valve arranged on each feeding pipe; the device is characterized in that the bottom of the reaction kettle is connected with a discharge pipe, the discharge pipe is provided with a discharge valve, the discharge pipe in front of the discharge valve is connected with a sprayer in the reaction kettle through a circulating pipe, and the circulating pipe is provided with a circulating pump; a spiral condenser pipe is arranged in the reaction kettle, and a liquid inlet pipe and a liquid outlet pipe which are connected with two ends of the condenser pipe are arranged on the reaction kettle;
when in use, long-chain alkyl dimethyl tertiary amine, methane chloride, an organic solvent, water and a catalyst are respectively introduced into the reaction kettle from five raw material storage tanks and all feed valves for reaction; meanwhile, the liquid phase in the reaction kettle is pumped from the kettle bottom to the kettle top by the circulating pump and is sprayed out by the sprayer, the liquid phase returns to the kettle in a small drop form to react with the monochloromethane, the contact area of gas-liquid two-phase reaction is increased, the reaction mass transfer efficiency is improved, the conversion rate of tertiary amine and the monochloromethane is improved, the using amount of the monochloromethane can be reduced, the cost is reduced, and the content of free amine in the obtained product is lower; after the reaction is finished, cooling water is introduced into the kettle through the condenser pipe to rapidly cool;
as a further improvement of the utility model, the top of the reaction kettle is connected with a tail gas treatment tank through a pipeline, a valve is arranged on the pipeline, and the tail gas treatment tank is connected with a vacuum pump; after the reaction is finished, pumping the tail gas into a tail gas treatment tank by using a vacuum pump, and absorbing unreacted methane chloride by using hot alkali solution; the method solves the problem of methane chloride tail gas treatment generated by industrial intermittent production by using a simple and low-cost process, avoids the waste of equipment resources, reduces the equipment cost, and is economic, effective, safe and environment-friendly;
as a further improvement of the utility model, a jacket is arranged outside the tail gas treatment tank; a flowmeter is arranged on a feed pipe; the tail gas treatment tank can be heated, the flow meter can detect the using amount of the methane chloride, the total amount is controlled by the feeding valve, the excessive use of the methane chloride is reduced as much as possible, the cost is reduced, and the content of free amine in the product is reduced;
to sum up, the utility model discloses a circulation backward flow spray set improves the conversion rate of reaction to reduce the quantity, the reduce cost of methane chloride, and the free amine content that obtains the product is lower, and has solved the produced methane chloride tail gas treatment problem of industrial intermittent type nature production, but reduction of equipment cost, safety ring protects.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings, taking the synthesis of dodecyltrimethylammonium chloride from dodecyldimethyl tertiary amine and monochloromethane as an example.
As shown in fig. 1, the long-chain alkyl trimethyl ammonium chloride synthesizing apparatus of this embodiment includes a reaction kettle 1 provided with a jacket 2 and a stirrer 3, five raw material storage tanks 4, 5, 6, 22, 23 connected to the reaction kettle 1 through respective feed pipes, and a feed valve 7 provided on each feed pipe, wherein a flow meter 8 is provided on one feed pipe; a discharge pipe 9 is connected with the bottom of the reaction kettle 1, a discharge valve 10 is arranged on the discharge pipe 9, the discharge pipe 9 in front of the discharge valve 10 is connected with a sprayer 12 in the reaction kettle 1 through a circulating pipe 11, and a circulating pump 13 is arranged on the circulating pipe 11; a spiral condenser pipe 14 is arranged in the reaction kettle 1, and a liquid inlet pipe 15 and a liquid outlet pipe 16 which are connected with two ends of the condenser pipe 14 are arranged on the reaction kettle 1; the top of the reaction kettle 1 is connected with a tail gas treatment tank 17 through a pipeline, the pipeline is provided with a valve 18, the tail gas treatment tank 17 is connected with a vacuum pump 19, and a jacket 21 is arranged outside the tail gas treatment tank 17;
monochloromethane is stored in a raw material storage tank 4 with a flowmeter 8, dodecyl dimethyl tertiary amine is stored in a raw material storage tank 5, an organic solvent, water and a catalyst are respectively stored in raw material storage tanks 6, 22 and 23, and a tail gas treatment tank 17 stores hot alkali solution; when the device is used, dodecyl dimethyl tertiary amine, methane chloride, an organic solvent, water and a catalyst are respectively introduced into a reaction kettle 1 from raw material storage tanks 5, 4, 6, 22 and 23 and feed valves 7 for reaction, meanwhile, a liquid phase in the reaction kettle 1 is pumped to the top of the kettle from the bottom of the kettle by a circulating pump 13 and is sprayed out by a sprayer 12, and the liquid phase returns to the kettle in the form of small liquid drops to react with the methane chloride, so that the contact area of gas-liquid two-phase reaction is increased, the mass transfer efficiency of the reaction is improved, the conversion rate of the tertiary amine and the methane chloride is improved, the using amount of the methane chloride can be reduced, the cost is reduced, and the content of free amine of the obtained product is lower; the condenser pipe 14 is filled with cooling water in the kettle for rapid cooling;
after the reaction is finished, the tail gas is pumped into a tail gas treatment tank 17 by a vacuum pump 19, unreacted methane chloride is absorbed by hot alkali solution and then pumped out, so that the problem of methane chloride tail gas treatment generated by industrial intermittent production is solved, the waste of equipment resources is avoided, the equipment cost is reduced, and the method is economical, effective, safe and environment-friendly;
the jacket 21 can heat the tail gas treatment tank 17, the flow meter 8 can detect the using amount of methane chloride, the total amount is controlled by the feed valve 7, the excessive use of the methane chloride is reduced as much as possible, the cost is reduced, and the content of free amine in the product is reduced.
Claims (3)
1. A long-chain alkyl trimethyl ammonium chloride synthesis device comprises a reaction kettle provided with a jacket and a stirrer, five raw material storage tanks connected with the reaction kettle through respective feeding pipes, and a feeding valve arranged on each feeding pipe; the device is characterized in that the bottom of the reaction kettle is connected with a discharge pipe, the discharge pipe is provided with a discharge valve, the discharge pipe in front of the discharge valve is connected with a sprayer in the reaction kettle through a circulating pipe, and the circulating pipe is provided with a circulating pump; a spiral condenser pipe is arranged in the reaction kettle, and a liquid inlet pipe and a liquid outlet pipe which are connected with the two ends of the condenser pipe are arranged on the reaction kettle.
2. The synthesis device of long-chain alkyl trimethyl ammonium chloride according to claim 1, wherein the top of the reaction kettle is connected with a tail gas treatment tank through a pipeline, a valve is arranged on the pipeline, and the tail gas treatment tank is connected with a vacuum pump.
3. The long-chain alkyl trimethyl ammonium chloride synthesis device according to claim 1 or 2, wherein a jacket is arranged outside the tail gas treatment tank; a flowmeter is arranged on one feeding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220593440.2U CN217313400U (en) | 2022-03-18 | 2022-03-18 | Long-chain alkyl trimethyl ammonium chloride synthesis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220593440.2U CN217313400U (en) | 2022-03-18 | 2022-03-18 | Long-chain alkyl trimethyl ammonium chloride synthesis device |
Publications (1)
| Publication Number | Publication Date |
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| CN217313400U true CN217313400U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220593440.2U Active CN217313400U (en) | 2022-03-18 | 2022-03-18 | Long-chain alkyl trimethyl ammonium chloride synthesis device |
Country Status (1)
| Country | Link |
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| CN (1) | CN217313400U (en) |
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2022
- 2022-03-18 CN CN202220593440.2U patent/CN217313400U/en active Active
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