CN217856152U - 2-bromopropane reaction production device - Google Patents

Abstract

The utility model relates to a chemical production equipment technical field, concretely relates to 2-bromopropane reaction apparatus for producing, including reation kettle, the reation kettle below is equipped with the discharge gate, the intercommunication has the circulating pipe on the discharge gate, be equipped with circulating water pump on the circulating pipe, the circulating pipe communicates to the knockout tower, the knockout tower includes reaction section and rectifying section, the circulating pipe communicates to reaction section and rectifying section junction, reaction section lower extreme and reation kettle intercommunication, rectifying section upper end intercommunication has the cooling tube, the cooling tube intercommunication has the condenser, the condenser exit end is connected with vapour and liquid separator, be connected with tail gas pipe and back flow on the vapour and liquid separator, the back flow communicates to rectifying section top, the tail gas pipe communicates to tail gas processing system. The utility model discloses a circulating water pump and knockout tower accelerate the reaction rate of raw materials, make the raw materials mix the reaction as far as possible, increase the result content, make reaction cycle shorten to 8 ~ 10 hours.

Description

2-bromopropane reaction production device

Technical Field

The utility model relates to a chemical production equipment technical field, concretely relates to 2-bromopropane reaction apparatus for producing.

Background

The 2-bromopropane is an organic compound, has a chemical formula of C3H7Br, is mainly used for synthesizing medicines, dyes and other organic compounds, currently, sodium bromide solid is mostly adopted in the production of the 2-bromopropane, the problem that a sodium bromide solution must be concentrated and crystallized exists, the produced sodium bromide solid is used for producing the 2-bromopropane, the mixing degree of the sodium bromide solid and isopropanol is limited, the content of the produced 2-bromopropane crude product can only reach 90-95%, the isopropanol content is 5-10%, the difficulty is increased for the subsequent rectification separation process, meanwhile, the reaction time of the sodium bromide solid and the isopropanol is longer, the reaction time of single-batch secondary production is 12 hours, and the production efficiency of the 2-bromopropane is limited.

Disclosure of Invention

The utility model discloses a solve among the prior art problem that 2-bromopropane's production crude content is low, the reaction cycle is long, provide a 2-bromopropane reaction apparatus for producing, the 2-bromopropane crude content that uses the device production is higher to reaction time is shorter.

In order to realize the purpose, the technical scheme of the utility model is that:

the utility model provides a 2-bromopropane reaction apparatus for producing, includes reation kettle, the reation kettle below is equipped with the discharge gate, the intercommunication has the circulating pipe on the discharge gate, be equipped with circulating water pump on the circulating pipe, the circulating pipe communicates to the knockout tower, the knockout tower includes reaction section and rectifying section, the rectifying section is located the reaction section top, the circulating pipe communicates to reaction section and rectifying section junction, the knockout tower is located the reation kettle top, reaction section lower extreme and reation kettle intercommunication, rectifying section upper end intercommunication has the cooling tube, the cooling tube intercommunication has the condenser, the condenser exit end is connected with vapour and liquid separator, be connected with tail gas pipe and back flow on the vapour and liquid separator, the back flow communicates to the rectifying section top, the tail gas pipe communicates to tail gas processing system. Introducing a reaction solution in a reaction kettle into a separation tower through a circulating water pump for dispersive mixing, reacting the solution in a reaction section, gasifying the generated 2-bromopropane and isopropanol, rectifying the mixture in a rectifying section, cooling the mixture by a condenser, introducing the cooled liquid into the rectifying section through a return pipe, introducing the liquid into the reaction kettle through the separation tower, continuously reacting the isopropanol in the liquid until the content of the 2-bromopropane in the reacted solution reaches 90-95%, accelerating the reaction speed of the raw materials by the circulating water pump and the separation tower, and shortening the reaction period to 8-10 hours.

Further, the reaction kettle comprises a reaction kettle jacket, a motor and a stirring blade, wherein the reaction kettle jacket is sleeved outside the reaction kettle shell, and a circulating water inlet and a circulating water outlet are formed in the reaction kettle jacket. The cooling and heating of the reaction kettle are realized by introducing circulating water or steam into the jacket of the reaction kettle.

Further, the motor is fixed at the top of the reaction kettle, and the output shaft of the motor penetrates through the reaction kettle shell to be connected with the stirring blades. The solution is stirred and mixed by the stirring blades, so that the reaction speed is fully accelerated by mixing.

Furthermore, a cooling water inlet pipe and a cooling water outlet pipe are respectively arranged at two ends of the condenser. The cooling liquefaction effect of the condenser on the gaseous 2-bromopropane and isopropanol is ensured, so that the gaseous 2-bromopropane and isopropanol are completely liquefied.

Further, the gas-liquid separator is communicated with a chute, and the chute is communicated to the receiving tank. After the content of the 2-bromopropane reaches 90-95% after the reaction, the solution after the reaction is received by a receiving tank.

Through the technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a circulating water pump lets in the knockout tower with the reaction solution in the reation kettle and disperses the mixture, solution reacts in the reaction section, 2-bromopropane and the isopropyl alcohol gasification of production get into the rectification section and carry out the rectification, cooling through the condenser, liquid after the cooling passes through the back flow and gets into the rectification section, liquid passes through the knockout tower and gets into in the reation kettle, isopropyl alcohol in the liquid continues the reaction, reach 90 ~ 95% until 2-bromopropane content in the solution after the reaction, accelerate the reaction rate of raw materials through circulating water pump and knockout tower, make raw materials mixed reaction as far as possible, increase product content, make reaction period shorten to 8 ~ 10 hours.

Drawings

FIG. 1 is a schematic structural diagram of a 2-bromopropane reaction production device of the present invention.

The reference numbers in the drawings are as follows: 1 is a reaction kettle, 101 is a reaction kettle jacket, 102 is a motor, 103 is a stirring blade, 2 is a separation tower, 201 is a reaction section, 202 is a rectification section, 3 is a cooling pipe, 4 is a circulating water pump, 5 is a condenser, 501 is a cooling water inlet pipe, 502 is a cooling water outlet pipe, 6 is a gas-liquid separator, 7 is a receiving tank, 8 is a return pipe, 9 is a tail gas pipe, 10 is an outlet chute pipe, and 11 is a circulating pipe.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description below:

as shown in fig. 1, a 2-bromopropane reaction production device comprises a reaction kettle 1, a discharge port is arranged below the reaction kettle 1, a circulating pipe 11 is communicated with the discharge port, a circulating water pump 4 is arranged on the circulating pipe 11, the circulating pipe 11 is communicated with a separation tower 2, the separation tower 2 comprises a reaction section 201 and a rectification section 202, the rectification section 202 is positioned above the reaction section 201, the circulating pipe 11 is communicated with the joint of the reaction section 201 and the rectification section 202, the separation tower 2 is positioned above the reaction kettle 1, the lower end of the reaction section 201 is communicated with the reaction kettle 1, the upper end of the rectification section 202 is communicated with a cooling pipe 3, the cooling pipe 3 is communicated with a condenser 5, the outlet end of the condenser 5 is connected with a gas-liquid separator 6, the gas-liquid separator 6 is connected with a tail gas pipe 9 and a return pipe 8, the return pipe 8 is communicated with the top of the rectification section 202, and the tail gas pipe 9 is communicated with a tail gas treatment system. The gas-liquid separator 6 is communicated with a chute 10, and the chute 10 is communicated with the receiving tank 7. Adding a certain amount of sodium bromide solution into a reaction kettle 1, stirring, introducing a proper amount of isopropanol and a certain amount of concentrated sulfuric acid into the reaction kettle 1, opening a circulating water pump 4, introducing the reaction solution in the reaction kettle 1 into a separation tower 2 by the circulating water pump 4, spraying the reaction solution from the upper part of a reaction section 201 for dispersion and mixing, gasifying part of 2-bromopropane and isopropanol generated by the reaction, introducing the gasified part of the 2-bromopropane and the isopropanol into a rectification section 202 for rectification, cooling the gasified part of the isopropanol by a condenser 9, discharging the cooled residual gas into a tail gas treatment system in a gas-liquid separator 6 through a tail gas pipe 9, detecting the content of the 2-bromopropane in the cooled solution, introducing the cooled solution into the upper end of the rectification section 202 through a return pipe 8 when the content of the 2-bromopropane does not reach 90-95%, introducing the solution into the reaction kettle 1 through the separation tower 2 for continuous reaction in the process, discharging the cooled solution through a discharge chute 10 when the content of the 2-bromopropane reaches 90-95%, and introducing the reacted solution into a receiving tank 7. In this embodiment, the isopropyl alcohol is pumped into the reaction kettle 1 by a magnetic pump or a vacuum system, and the concentrated sulfuric acid is pumped into the reaction kettle by a metering pump.

The reaction kettle 1 comprises a reaction kettle jacket 101, a motor 102 and a stirring blade 103, wherein the reaction kettle jacket 101 is sleeved outside the shell of the reaction kettle 1, and a circulating water inlet and a circulating water outlet are formed in the reaction kettle jacket 101. When concentrated sulfuric acid is introduced into the reaction kettle 1, circulating water is introduced into the reaction kettle jacket 101 through the circulating water inlet to be cooled, after the concentrated sulfuric acid is completely introduced into the reaction kettle 1, steam is introduced into the reaction kettle jacket 101 through the circulating water inlet to be slowly heated, the phenomenon that the cooler 5 cannot be completely cooled and liquefied is prevented from being excessive, and gasified 2-bromopropane and isopropanol enter the tail gas treatment system through the tail gas pipe 9.

The motor 102 is fixed on the top of the reaction kettle 1, and an output shaft of the motor 102 penetrates through the shell of the reaction kettle 1 and is connected with the stirring blade 103. The motor 102 is turned on, and the output shaft of the motor 102 drives the stirring blade 103 to rotate, so as to stir and mix the solution in the reaction kettle 1.

And a cooling water inlet pipe 501 and a cooling water outlet pipe 502 are respectively arranged at two ends of the condenser 5. The cooling water is added into the condenser 5 through the cooling water inlet pipe 501 to cool the gasified 2-bromopropane and the isopropanol, so that the complete cooling liquefaction of the 2-bromopropane and the isopropanol is ensured.

Adding a certain amount of sodium bromide solution into a reaction kettle 1, turning on a motor 102, driving a stirring blade 103 to rotate by an output shaft of the motor 102, stirring and mixing the solution in the reaction kettle 1, introducing a proper amount of isopropanol and a certain amount of concentrated sulfuric acid into the reaction kettle 1, controlling the speed and the reaction temperature when the concentrated sulfuric acid is introduced, controlling the reaction temperature to be 60 ℃, introducing circulating water into a reaction kettle jacket 101 through a circulating water inlet to cool the reaction kettle 1, turning on a circulating water pump 4, introducing the reaction solution in the reaction kettle 1 into a separation tower 2 through the circulating water pump 4, spraying the reaction solution from the upper part of a reaction section 201 to disperse and mix in the reaction section 201, introducing steam into the reaction kettle jacket 101 through the circulating water inlet to slowly heat after the concentrated sulfuric acid is completely introduced into the reaction kettle 1, gasifying part of 2-bromopropane and isopropanol generated by the reaction, feeding the gasified part into a rectifying section 202 for rectification, cooling the gasified part by a condenser 9, discharging the cooled residual gas into a tail gas treatment system in a gas-liquid separator 6 through a tail gas pipe 9, detecting the 2-bromopropane content in the cooled solution, feeding the cooled solution into the upper end of the rectifying section 202 through a return pipe 8 when the 2-bromopropane content does not reach 90-95%, feeding the solution into a reaction kettle 1 through a separation tower 2 for reaction in the process, discharging the solution through a discharge pipe 10 when the 2-bromopropane content reaches 90-95%, feeding the reacted solution into a receiving tank 7, stopping feeding steam into a jacket 101 of the reaction kettle after the reaction is finished when the reaction kettle 1 completely reflects that the discharged solution does not appear any more, and closing a motor 102 and a circulating water pump 4.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications made by the technical solutions described in the claims of the present invention should be included in the claims of the present invention.

Claims (5)

1. The utility model provides a 2-bromopropane reaction apparatus for producing, includes reation kettle (1), its characterized in that, reation kettle (1) below is equipped with the discharge gate, the intercommunication has circulating pipe (11) on the discharge gate, be equipped with circulating water pump (4) on circulating pipe (11), circulating pipe (11) intercommunication is to knockout tower (2), knockout tower (2) are including reaction section (201) and rectifying section (202), rectifying section (202) are located reaction section (201) top, circulating pipe (11) intercommunication is to reaction section (201) and rectifying section (202) junction, knockout tower (2) are located reation kettle (1) top, reaction section (201) lower extreme and reation kettle (1) intercommunication, rectifying section (202) upper end intercommunication has cooling tube (3), cooling tube (3) intercommunication has condenser (5), condenser (5) exit end is connected with vapour and liquid separator (6), be connected with on vapour and liquid separator (6) tail gas pipe (9) and back flow (8), back flow (8) intercommunication is to rectifying section (202) top, tail gas back flow pipe (9) intercommunication is to the top, tail gas back gas pipe (9) processing system.

2. The 2-bromopropane reaction production device according to claim 1, wherein the reaction kettle (1) comprises a reaction kettle jacket (101), a motor (102) and a stirring blade (103), the reaction kettle jacket (101) is sleeved outside the shell of the reaction kettle (1), and the reaction kettle jacket (101) is provided with a circulating water inlet and a circulating water outlet.

3. The reaction production device of 2-bromopropane according to claim 2, wherein the motor (102) is fixed on the top of the reaction kettle (1), and the output shaft of the motor (102) passes through the shell of the reaction kettle (1) and is connected with the stirring blade (103).

4. The reaction production device of 2-bromopropane according to claim 1, wherein a cooling water inlet pipe (501) and a cooling water outlet pipe (502) are respectively arranged at two ends of the condenser (5).

5. The reaction production device of 2-bromopropane according to claim 1, wherein the gas-liquid separator (6) is connected with a discharge pipe (10), and the discharge pipe (10) is connected to the receiving tank (7).

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