CN220258037U - Paint synthesis reaction device - Google Patents

Abstract

The utility model relates to chemical equipment, in particular to a paint synthesis reaction device; the device comprises a tank body, a feeding pipe, a dripping device, a stirrer, a composite reflux device, a heat exchange jacket and a discharge pipe, wherein the composite reflux device comprises an air inlet pipe, a first connecting pipe, a condensing pipe, a condenser, a separating tank, an exhaust pipe and a second connecting pipe, one side of the air inlet pipe is communicated with the upper part of the condensing pipe through the first connecting pipe, the periphery of the condensing pipe is sleeved with the condenser, the top end of the air inlet pipe is connected with one side of the bottom of the separating tank, the top end of the condensing pipe is connected with the other side of the bottom of the separating tank through the second connecting pipe, after an acidic aqueous solution is dripped, the composite reflux device can be utilized for reflux treatment, reactants are not required to be led out, and the reactant is directly heated and refluxed in a reaction kettle; the dehydration treatment can be started by adjusting the compound reflux device at the tail section of the reflux, and the organic silicon prepolymer of the high polymer is separated from water molecules and small molecular alcohols through a molecular sieve, so that the water molecules and the small molecular alcohols are discharged from the exhaust pipe.

Description

Paint synthesis reaction device

Technical Field

The utility model relates to chemical equipment, in particular to a paint synthesis reaction device.

Background

The conventional reaction vessel generally has the functions of heating, maintaining temperature, stirring, mixing and adding various reagents, so that the synthesis of the paint is generally carried out in the reaction vessel. However, in some synthetic reactions, water soluble substances are required to be added first, then reactants are returned from a reaction kettle for a certain period of time and then are sent to distillation equipment to remove water, for example, an environment-friendly organosilicon modified intumescent fire retardant coating disclosed in China patent publication No. 202310406062, wherein: the preparation method of the organic silicon modified epoxy resin in the component A comprises the following steps: 1) Adding 25-32 parts of alkyl alkoxy silane and 4.5-12 parts of silane coupling agent into a reaction kettle, uniformly stirring, raising the temperature of the reaction kettle to 55-65 ℃, dropwise adding 2-5 parts of acidic aqueous solution, refluxing for 2-2.5 hours after the dropwise adding is finished, removing small molecular weight alcohol and water in the system through reduced pressure distillation, cooling the residual substances to room temperature, and filtering to obtain the organosilicon prepolymer.

When the existing reaction kettle is used in the production process, the following problems exist: 1. the existing reaction kettle generally has no reflux function, and reactants need to be led into external reflux equipment; 2. the boiling point of the organosilicon prepolymer at normal pressure is 86 degrees celsius (the difference is within 10 degrees celsius according to the synthesis mode), while the boiling point of water is 100 degrees celsius, and the organosilicon prepolymer is difficult to separate from water effectively by simple reduced pressure distillation.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a paint synthesis reaction device.

The technical scheme of the utility model is as follows:

the utility model provides a coating synthesis reaction device, includes jar body, inlet pipe, dropwise add device, agitator, compound reflux condenser, heat transfer jacket and row material pipe, jar body top is provided with inlet pipe, dropwise add device, agitator and compound reflux condenser, and wherein the pivot and the stirring rake of agitator stretch into the jar internally, jar body overcoat is equipped with the heat transfer jacket, jar body bottom is provided with row material pipe, compound reflux condenser includes intake pipe, first connecting pipe, condenser, separator tank, blast pipe and second connecting pipe, and intake pipe one side is equipped with the condenser through first connecting pipe intercommunication condenser upper portion, condenser pipe periphery cover, and separation tank bottom one side is connected on the intake pipe top, and separation tank bottom opposite side is connected on the condenser pipe top through the second connecting pipe, and the separator tank top is provided with the blast pipe.

Further, molecular sieves are arranged in the separating tank and isolate the separating tank into an upper cavity and a lower cavity, the lower cavity is communicated with the air inlet pipe and the second connecting pipe, and the upper cavity is communicated with the air outlet pipe. The aim of separating water molecules and organosilicon prepolymer is achieved.

Further, the heat exchange jacket is communicated with a hot water inlet pipe, a hot water outlet pipe, a cold water inlet pipe and a cold water outlet pipe, and can be heated or cooled.

Further, the discharging pipe is connected with a filter for discharging and filtering.

Further, a plurality of support legs are arranged on the bottom surface of the tank body and used for supporting the device.

The beneficial effects of the utility model are as follows: after the acid aqueous solution is dripped, the reflux treatment can be carried out by utilizing a compound reflux device, reactants are not required to be led out, and the reaction kettle is directly heated and refluxed; the dehydration treatment can be started by adjusting the compound reflux device at the tail section of the reflux, and the organic silicon prepolymer of the high polymer is separated from water molecules and small molecular alcohols through a molecular sieve, so that the water molecules and the small molecular alcohols are discharged from the exhaust pipe.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic structural view of the composite reflux apparatus.

In the figure, 1, a tank body; 2. a feed pipe; 3. a dripping device; 4. a stirrer; 5. a heat exchange jacket; 6. a composite reflux device; 7. a discharge pipe; 8. a filter; 9. a hot water inlet pipe; 10. a hot water outlet pipe; 11. a cold water inlet pipe; 12. a cold water outlet pipe; 13. an air inlet pipe; 14. a first connection pipe; 15. a condensing tube; 16. a condenser; 17. a separation tank; 18. a second connection pipe; 19. an exhaust pipe; 20. a condensate input tube; 21. and a condensate recovery tube.

Detailed Description

The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:

as shown in fig. 1 and 2, a paint synthesis reaction device comprises a tank body 1, a feed pipe 2, a dripping device 3, a stirrer 4, a composite reflux condenser 6, a heat exchange jacket 5 and a discharge pipe 7, wherein the feed pipe 2, the dripping device 3, the stirrer 4 and the composite reflux condenser 6 are arranged at the top of the tank body 1, a rotating shaft and a stirring paddle of the stirrer 4 extend into the tank body 1, the heat exchange jacket 5 is sleeved outside the tank body 1, the discharge pipe 7 is arranged at the bottom of the tank body 1, the composite reflux condenser 6 comprises an air inlet pipe 13, a first connecting pipe 14, a condensing pipe 15, a condenser 16, a separating tank 17, an exhaust pipe 19 and a second connecting pipe 18, one side of the air inlet pipe 13 is communicated with the upper part of the condensing pipe 15 through the first connecting pipe 14, the condenser 16 is sleeved at the periphery of the condensing pipe 15, the top end of the air inlet pipe 13 is connected with one side of the bottom of the separating tank 17, the top of the condensing pipe 15 is connected with the other side of the bottom of the separating tank 17 through the second connecting pipe 18, and the top of the separating tank 17 is provided with an exhaust pipe 19. The molecular sieve is arranged in the separating tank 17, the molecular sieve separates the separating tank 17 into an upper cavity and a lower cavity, the lower cavity is communicated with the air inlet pipe 13 and the second connecting pipe 18, and the upper cavity is communicated with the exhaust pipe 19. The heat exchange jacket 5 is communicated with a hot water inlet pipe 9, a hot water outlet pipe 10, a cold water inlet pipe 11 and a cold water outlet pipe 12. The discharge pipe 7 is connected with a filter 8. The bottom surface of the tank body 1 is provided with a plurality of support legs.

When the utility model is used, valves are arranged on the feed pipe 2, the discharge pipe 7, the air inlet pipe 13, the first connecting pipe 14 and the second connecting pipe 18 in order to ensure the air tightness of the tank body. For convenient operation, the hot water inlet pipe 9, the hot water outlet pipe 10, the cold water inlet pipe 11 and the cold water outlet pipe 12 are also provided with valves. In order to improve the condensation efficiency of the condenser 16, the condenser 16 is externally connected with a condensate circulating device through a condensate input pipe 20 and a condensate recovery pipe 21, and condensate continuously enters the condenser 16 from the condensate input pipe 20 so as to quickly cool the gas in the condenser pipe 15 into a liquid state. These three technical schemes are common conventional means in the field, and specific structures and operations are not repeated.

The application method of the utility model comprises the following steps:

1) 25-32 parts of alkyl alkoxy silane and 4.5-12 parts of silane coupling agent are put into a feed pipe;

2) After the stirrer is started to stir uniformly, the tank body is heated to 55-65 ℃ through a heat exchange jacket;

3) 2-5 parts of acidic aqueous solution is dripped through a dripping device;

4) The heat exchange jacket is heated to 80-90 ℃ (86 ℃ is optimal), so that reactants are evaporated into the composite reflux device, valves of an air inlet pipe and a second connecting pipe in the composite reflux device are closed, the valve of a first connecting pipe is opened, and evaporated gas is circulated along a circulation route of the air inlet pipe, the first connecting pipe and a condensing pipe to realize reflux;

5) After 2 hours, closing the valve of the first connecting pipe, opening the valve of the air inlet pipe and the valve of the second connecting pipe, and circulating the evaporated gas along the circulating route of the air inlet pipe, the separating tank, the second connecting pipe and the condensing pipe, wherein the molecular sieve in the separating tank can only pass through small molecular substances, so that the organosilicon prepolymer can be condensed back to the tank body, but water and small molecular alcohols escape out of the device through the molecular sieve;

6) Cooling the heat exchange jacket to 20-26 ℃ after 0.5 hour until the reactant is cooled to 26 ℃;

7) The reactants are discharged for standby through a discharge pipe and a filter.

The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the utility model, and various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (5)

1. A paint synthesis reaction device is characterized in that: including jar body, inlet pipe, dropwise add device, agitator, compound backward flow ware, heat transfer jacket and row material pipe, jar body top is provided with inlet pipe, dropwise add device, agitator and compound backward flow ware, and wherein the pivot and the stirring rake of agitator stretch into jar internally, jar external cover is equipped with the heat transfer jacket, jar body bottom is provided with row material pipe, compound backward flow ware includes intake pipe, first connecting pipe, condenser, separator tank, blast pipe and second connecting pipe, and intake pipe one side is equipped with the condenser through first connecting pipe intercommunication condenser upper portion, condenser pipe periphery cover, and separation tank bottom one side is connected on the intake pipe top, and separation tank bottom opposite side is connected on the condenser pipe top through the second connecting pipe, and the separator tank top is provided with the blast pipe.

2. The paint-synthesizing reaction apparatus according to claim 1, wherein: the separation tank is internally provided with a molecular sieve, the molecular sieve separates the separation tank into an upper cavity and a lower cavity, the lower cavity is communicated with the air inlet pipe and the second connecting pipe, and the upper cavity is communicated with the exhaust pipe.

3. The paint-synthesizing reaction apparatus according to claim 2, wherein: the heat exchange jacket is communicated with a hot water inlet pipe, a hot water outlet pipe, a cold water inlet pipe and a cold water outlet pipe.

4. A paint-synthesis reaction apparatus according to claim 3, wherein: the discharge pipe is connected with a filter.

5. The paint-synthesizing reaction apparatus according to claim 4, wherein: the bottom surface of the tank body is provided with a plurality of supporting feet.