Backflow water distribution device for organic synthesis production

Abstract

The utility model discloses a reflux water distribution device for organic synthesis production, which comprises a reaction kettle and is characterized in that the upper end of the reaction kettle is communicated with an air inlet pipe, a first liquid distributor is arranged on the peripheral side of the air inlet pipe, the upper end of the first liquid distributor is communicated with a first connecting pipe, the upper end of the first connecting pipe is communicated with a condenser, and the condenser is n-shaped; the other end of the condenser is communicated with a second connecting pipe, the lower end of the second connecting pipe is communicated with a second liquid separator, an air outlet pipe is inserted into the second liquid separator, the lower end of the air outlet pipe is communicated with a first three-way valve, the first three-way valve is communicated with an exhaust pipe and an air return pipe, and the other end of the air return pipe is communicated with the reaction kettle. According to the utility model, uncooled gas is introduced into the reaction kettle again, so that the gas returns to reactants, the gas pressure is reduced, and the gas is fully utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to organic synthesis equipment technical field, especially in organic synthesis production is with backflow water separating device. BACKGROUND

[0002] In the organic synthesis process, many reactions require to carry out under certain temperature, and need to exclude the moisture or other low boiling point impurities in the system, to ensure the quality and yield of product. For this reason, backflow water separating device becomes an indispensable part. This device is mainly composed of reaction vessel, condenser, water separator and other components, wherein the role of condenser is to condense the steam generated in the reaction process into liquid, and then separate water from organic matter through water separator.

[0003] The traditional backflow water separating device design is more mature, generally adopts the vertical type condensing pipe, realizes the condensation through the natural convection. The condensed liquid enters the water separating funnel through the bottom of condensing pipe, and separates by using the density difference between water and organic solvent. However, in the actual application, the condenser can not completely guarantee that all liquefied gas is condensed, and the internal pressure of the system is increased. When the pressure is too high, not only the normal reaction is affected, but also the safety hidden danger is caused, such as the condensing pipe rupture. SUMMARY

[0004] The utility model aims at providing a kind of backflow water separating device for organic synthesis production, by the gas that is not cooled back into reaction kettle, let gas return to reactant, reduce gas pressure, and let gas be fully utilized.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A kind of backflow water separating device for organic synthesis production, including reaction kettle, the upper end of the reaction kettle is communicated with inlet pipe, the peripheral side of the inlet pipe is equipped with first liquid separator, the upper end of the first liquid separator is communicated with first connecting pipe, the upper end of the first connecting pipe is communicated with condenser, the condenser is "n" type, the other end of the condenser is communicated with second connecting pipe, the lower end of the second connecting pipe is communicated with second liquid separator, gas outlet pipe is inserted in the second liquid separator, the lower end of the gas outlet pipe is communicated with first three-way valve, the first three-way valve is communicated with exhaust pipe and back gas pipe, the other end of the back gas pipe is communicated with the reaction kettle.

[0007] By adopting the above technical scheme, gaseous product enters first liquid separator from inlet pipe, then enters condenser, part of gaseous product condenses and flows back into first liquid separator, the rest of gaseous product is condensed and flows into second liquid separator, and the product that has not been condensed can flow back into reaction kettle through back gas pipe, of course, it can also be discharged through exhaust pipe.

[0008] The utility model discloses further provide: the lower extreme of first liquid separator and second liquid separator is equipped with second three -way valve, the second three -way valve is connected with liquid outlet pipe and back liquid pipe, the other end of back liquid pipe all is connected in the reaction kettle.

[0009] By adopting the above technical scheme, the product in the first liquid separator and the second liquid separator can be conveniently discharged into the reaction kettle or discharged.

[0010] The utility model discloses further provide: temperature sensor and barometric pressure sensor are installed on the reaction kettle.

[0011] By adopting the above technical scheme, the temperature control and the barometric pressure control are convenient, and the normal reaction is guaranteed.

[0012] The utility model discloses further provide: the upper extreme of gas inlet pipe and exhaust pipe all is round -top state, and the upper extreme circumferential side of gas inlet pipe and exhaust pipe all is equipped with gas outlet.

[0013] By adopting the above technical scheme, the condensed liquid can be avoided to fall into the gas inlet pipe and the exhaust pipe.

[0014] The utility model discloses further provide: the lower extreme of condenser at both ends all is connected with water inlet joint, and the upper end of condenser is connected with water outlet joint.

[0015] By adopting the above technical scheme, the condensation effect is guaranteed.

[0016] The utility model discloses further provide: back gas pipe is located the bottom of the reaction kettle that one end of reaction kettle reaches in the stretching.

[0017] By adopting the above technical scheme, the product of gas can be conveniently passed into the reactant.

[0018] Summarized above, the utility model has following beneficial effect:

[0019] First, the utility model discloses that the gas that is not cooled is passed back into the reaction kettle, lets the gas return to the reactant, reduces the gas pressure, and makes the gas be fully utilized.

[0020] Second, the first liquid separator and the second liquid separator in the utility model can separate the product after liquefaction, discharge the useless product, and discharge the useful product into the reaction kettle to continue the reaction, thereby improving the reaction efficiency. DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram in the utility model discloses;

[0022] In the figure: 1, reaction kettle; 2, gas inlet pipe; 3, first liquid separator; 4, first connecting pipe; 5, condenser; 6, second connecting pipe; 7, second liquid separator; 8, gas outlet pipe; 9, first three-way valve; 10, exhaust pipe; 11, gas return pipe; 12, second three-way valve; 13, liquid outlet pipe; 14, liquid return pipe; 15, temperature sensor; 16, gas pressure sensor; 17, gas outlet; 18, water inlet joint; 19, water outlet joint. DETAILED DESCRIPTION

[0023] The utility model will be described in further detail below with reference to the drawings.

[0024] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0025] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Embodiment, a reflux water separation device for organic synthesis production, such as Figure 1As shown, including the reactor 1, the upper end of the reactor 1 is communicated with the gas inlet pipe 2, the side of the gas inlet pipe 2 is provided with the first distributor 3, the upper end of the first distributor 3 is communicated with the first connecting pipe 4, the upper end of the first connecting pipe 4 is communicated with the condenser 5, the condenser 5 is in the shape of "n", the other end of the condenser 5 is communicated with the second connecting pipe 6, the lower end of the second connecting pipe 6 is communicated with the second distributor 7, the second distributor 7 is inserted with the gas outlet pipe 8, the lower end of the gas outlet pipe 8 is communicated with the first three-way valve 9, the first three-way valve 9 is communicated with the exhaust pipe 10 and the gas return pipe 11, the other end of the gas return pipe 11 is communicated with the reactor 1. The reactor 1 is heated to carry out organic synthesis reaction, the gaseous product generated in the reaction process enters the first distributor 3 from the gas inlet pipe 2, then enters the condenser 5, part of the gaseous product is condensed and flows back into the first distributor 3, the remaining gaseous product flows into the second distributor 7, and the uncondensed product can flow back into the reactor 1 through the gas return pipe 11, of course, it can also be discharged through the exhaust pipe 10.

[0028] The lower end of the first distributor 3 and the second distributor 7 is provided with the second three-way valve 12, the second three-way valve 12 is communicated with the liquid outlet pipe 13 and the liquid return pipe 14, the other end of the liquid return pipe 14 is communicated with the reactor 1. The product in the first distributor 3 and the second distributor 7 can be separated by the second three-way valve 12, the useful product can be discharged or discharged into the reactor 1, and the useless product can be discharged, so that the reaction is more efficient.

[0029] In order to better control the reaction process, the temperature sensor 15 and the gas pressure sensor 16 are installed on the reactor 1, and the temperature and gas pressure in the reactor 1 are monitored in real time.

[0030] In order to avoid the condensed liquid falling into the gas inlet pipe 2 and the exhaust pipe 10, the upper end of the gas inlet pipe 2 and the exhaust pipe 10 is in the shape of a dome, and the upper end of the gas inlet pipe 2 and the exhaust pipe 10 is provided with the gas outlet 17, which is convenient for the gas inlet pipe 2 and the exhaust pipe 10 to ventilate.

[0031] The two ends of the lower side of the condenser 5 are communicated with the water inlet joint 18, the upper end of the condenser 5 is communicated with the water outlet joint 19, the water inlet joint 18 is connected with the water inlet pipe, and the water outlet joint 19 is connected with the water outlet pipe, which is conducive to the condensation of the condenser 5.

[0032] The end of the gas return pipe 11 in the reactor 1 extends to the bottom of the reactor 1, and the gas backflow directly enters the reaction liquid, improving the reaction efficiency.

[0033] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make non-creative modifications to the embodiment according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A reflux water separation device for organic synthesis production, comprising a reaction kettle (1), characterized in that: The upper end of the reactor (1) is connected to an air inlet pipe (2), a first liquid separator (3) is provided on the peripheral side of the air inlet pipe (2), the upper end of the first liquid separator (3) is connected to a first connecting pipe (4), the upper end of the first connecting pipe (4) is connected to a condenser (5), the condenser (5) is in an "n" shape, the other end of the condenser (5) is connected to a second connecting pipe (6), the lower end of the second connecting pipe (6) is connected to a second liquid separator (7), an air outlet pipe (8) is inserted into the second liquid separator (7), the lower end of the air outlet pipe (8) is connected to a first three-way valve (9), the first three-way valve (9) is connected to an exhaust pipe (10) and a return pipe (11), the other end of the return pipe (11) is connected to the reactor (1).

2. The reflux water separation device for organic synthesis production according to claim 1, characterized in that: A second three-way valve (12) is provided at the lower end of the first liquid separator (3) and the second liquid separator (7), and the second three-way valve (12) is connected to a liquid outlet pipe (13) and a liquid return pipe (14), and the other end of the liquid return pipe (14) is connected to the reactor (1).

3. The reflux water separation device for organic synthesis production according to claim 2, characterized in that: The reactor (1) is equipped with a temperature sensor (15) and an air pressure sensor (16).

4. The reflux water separation device for organic synthesis production according to claim 3, characterized in that: The upper ends of the air intake pipe (2) and the exhaust pipe (10) are both dome-shaped, and air outlets (17) are provided on the circumferential sides of the upper ends of the air intake pipe (2) and the exhaust pipe (10).

5. The reflux water separation device for organic synthesis production according to claim 4, characterized in that: Both ends of the condenser (5) located on the lower side are connected to water inlet joints (18), and the upper end of the condenser (5) is connected to a water outlet joint (19).

6. The reflux water separation device for organic synthesis production according to claim 5, characterized in that: The return air pipe (11) is located at one end of the reactor (1) and extends to the bottom of the reactor (1).

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