Anti-clogging backflow water diversion reaction device

Abstract

The utility model provides an anti-blocking backflow water separation reaction device which comprises a reaction kettle, a condenser, a gas-liquid separator, a water separator, a receiving storage tank, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a water level control system, the top of the reaction kettle is communicated with the condenser through the first pipeline, the liquid outlet end of the condenser is communicated with the gas-liquid separator through the second pipeline, and the liquid outlet end of the gas-liquid separator is connected with the water segregator through the third pipeline; the upper end of the water segregator is communicated with the reaction kettle through the fourth pipeline, and the lower end of the water segregator is connected with the receiving tank through the fifth pipeline; and a water level control system is connected among the water segregator, the condenser and the receiving storage tank. The device solves the problem that volatile salt is cooled and separated out in the condenser to block the condenser in the high-temperature reflux dehydration reaction process in the chemical industry.

Description

Technical Field

[0001] The utility model relates to the field of chemical or pharmaceutical equipment, in particular to an anti-blocking reflux water separation reaction device. Background Art

[0002] In the production of chemical or pharmaceutical industries, high-temperature reflux dehydration reaction is a common chemical reaction. Specifically, it refers to the generation of water molecules during certain chemical reactions (such as dehydration ring-closing reactions). As the reaction continues to proceed in the right direction, a large amount of water is generated in the system. If the water in the system is not separated in time, the reaction will easily reach equilibrium, thereby affecting the efficiency of raw material conversion. In order to promote raw material conversion, high-temperature reflux water separation is usually used to separate the water in the system. Under high-temperature reaction conditions, volatile salts that are easily dissociated or sublimated will precipitate again when encountering a low-temperature condenser. Due to reflux water separation, the precipitated salts will not have enough water in the system to thoroughly clean the condenser, resulting in a large amount of salt accumulating in the condenser, blocking the condensation pipe, causing the reaction to be interrupted and the pressure in the kettle to rise, posing a safety hazard. Utility Model Content

[0003] The utility model aims to provide an anti-clogging reflux water separation reaction device to solve the problem of salting out and clogging the condenser due to insufficient water in the system during the high-temperature reflux dehydration reaction process.

[0004] The utility model provides an anti-clogging reflux water separation reaction device, comprising a reactor 1, a condenser 2, a gas-liquid separator 3, a water separator 4, a receiving storage tank 5, a first pipeline 101, a second pipeline 201, a third pipeline 301, a fourth pipeline 402, a fifth pipeline 401, and a water level control system. The condenser 2 is arranged above the reactor 1, the top of the reactor 1 is connected to the hot steam inlet of the condenser 2 through the first pipeline 101, the liquid outlet of the condenser 2 is connected to the gas-liquid separator 3 through the second pipeline 201, the liquid outlet of the gas-liquid separator 3 is connected to the water separator 4 through the third pipeline 301, and the third pipeline 301 is inserted into the bottom of the water separator 4, the upper end of the water separator 4 is connected to the reactor 1 through the fourth pipe 402, and the lower end of the water separator 4 is connected to the receiving tank 5 using the fifth pipe 401; a water level control system is connected between the water separator 4, the condenser 2, and the receiving tank 5, and the water level control system includes an upper sensor 44, a lower sensor 45, a water inlet valve 21, a drain valve 42 and a control device 61, the upper sensor 44 and the lower sensor 45 are located in the water separator 4, the water inlet valve 21 is connected to the hot steam inlet end of the condenser 2 through the sixth pipe 601, and the drain valve 42 is located on the fifth pipe 401.

[0005] In some embodiments, the reflux water separation reaction device further includes an adjustable pressure reducing device 31 , and the adjustable pressure reducing device 31 is connected to the gas outlet end of the gas-liquid separator 3 through a seventh pipeline 302 .

[0006] In some embodiments, the gas outlet end of the gas-liquid separator 3 is connected to the top end of the receiving tank 5 through an eighth pipeline 501.

[0007] In some embodiments, a two-phase interface observation mirror 46 is further installed on the outer shell of the water separator 4; preferably, the upper end of the two-phase interface observation mirror is higher than the upper sensor and the lower end is lower than the lower sensor; more preferably, the two-phase interface observation mirror is a glass mirror.

[0008] In some embodiments, the fourth pipeline 402 is equipped with a one-way check valve 41 .

[0009] In some embodiments, the eighth pipeline 501 is equipped with a regulating valve 51 .

[0010] In some embodiments, the water inlet valve 21 is an adjustable two-way water inlet valve, and the drain valve 42 is a one-way check valve.

[0011] In some embodiments, the condenser 2 comprises one or more condensation columns connected in series.

[0012] In some embodiments, the components are quickly connected or welded via flanges or chucks.

[0013] Beneficial effects:

[0014] This device uses a control device to interlock the water level sensor to clean the condenser, solving the safety problem caused by volatile salts that precipitate out in the condenser when it is cooled during the high-temperature reflux dehydration reaction and block the condenser, resulting in reaction interruption and increased pressure in the kettle. The process has strong continuity and high production efficiency. At the same time, the use of the pressure reducing device can be adjusted to reduce the vapor pressure in the system, lower the boiling point of the solvent, thereby lowering the reaction temperature and shortening the reaction time, which is beneficial to improving the reaction yield and product quality, reducing production energy consumption, and fully meeting the needs of lean production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0016] Figure 1This is a structural schematic diagram of the anti-clogging reflux water separation reaction device of Example 1, in which the correspondence between the figure marks and the components is: first pipeline 101, second pipeline 201, third pipeline 301, fourth pipeline 402, fifth pipeline 401, sixth pipeline 601, seventh pipeline 302, eighth pipeline 501, reactor 1, condenser 2, gas-liquid separator 3, water separator 4, receiving tank 5, upper sensor 44, lower sensor 45, two-phase interface observation mirror 46, water inlet valve 21, drain valve 42, one-way check valve 41, regulating valve 51, and control equipment 61.

[0017] Figure 2 The schematic diagram of the anti-blocking reflux water separation reaction device of Example 2, wherein the corresponding relationship between the reference numerals and the components is as follows: adjustable pressure reducing device 31, other parts and attached Figure 1 Consistent in. DETAILED DESCRIPTION

[0018] In order to more clearly understand the purpose, advantages and features of the present invention, the technical solutions in the embodiments will be described in detail below in conjunction with the drawings in the embodiments of the present invention so as to fully understand the present invention. The present invention can also be implemented in other ways different from those described herein, so the scope of protection of the present invention is not limited by the specific embodiments disclosed below. Based on the embodiments in the present invention, those skilled in the art can also obtain other improvements based on these drawings without making creative work. The embodiments described below are only some embodiments of the present invention, rather than all embodiments.

[0019] In the description of the present invention, all concepts related to directionality or orientation such as up, down, left, right, inside, center, and outside are based on the positions shown in the accompanying drawings, and therefore cannot be understood as a special limitation on the technical solution provided by the present invention.

[0020] Example 1

[0021] like Figure 1As shown, the anti-clogging reflux water separation reaction apparatus includes a first pipeline 101, a second pipeline 201, a third pipeline 301, a fourth pipeline 402, a fifth pipeline 401, a sixth pipeline 601, a seventh pipeline 302, an eighth pipeline 501, a reactor 1, a condenser 2, a gas-liquid separator 3, a water separator 4, a receiving tank 5, an upper sensor 44, a lower sensor 45, a two-phase interface observation mirror 46, a water inlet valve 21, a drain valve 42, a one-way check valve 41, a regulating valve 51, and a control device 61. When the high-temperature reflux reaction in reactor 1 begins, the organic solvent and water in the reactor azeotrope at high temperature. The mixed vapor flows through the first pipeline 101 at the top of the reactor into the condenser 2 above the reactor, where it is cooled and liquefied. It then enters the gas-liquid separator 3 for gas-liquid separation. Unliquefied gas is discharged through the seventh pipeline 302, and the cooled liquid flows through the third pipeline 301 into the water separator 4 for separation.

[0022] When the mixed liquid accumulates at the top of the water separator, the upper light organic phase flows back to reactor 1 along fourth pipeline 402 through one-way check valve 41, achieving solvent recycling. When the aqueous phase level in water separator 4 exceeds upper sensor 44, the program automatically closes inlet valve 21 and opens drain valve 42 to perform water diversion, with the separated aqueous phase entering receiving tank 5. When the aqueous phase level in water separator 4 falls below lower sensor 45, the program automatically closes drain valve 42 and opens inlet valve 21, allowing the high-temperature steam discharged from first pipeline 101 to cool and liquefy while simultaneously performing a condenser flushing operation. This ensures that volatile salts in the condenser are promptly flushed down and dissolved in the liquefied water, successfully avoiding pipeline and equipment blockage and achieving a smooth dynamic balance in reflux diversion, achieving efficient and rapid reflux diversion.

[0023] The gas outlet end of the gas-liquid separator 3 in the device is connected to the top of the receiving tank 5 through the eighth pipeline 501, which can balance the gas pressure of the entire system and further reduce safety risks.

[0024] Example 2

[0025] like Figure 2 As shown, the anti-clogging reflux water separation reaction apparatus of Example 2 is similar to that of Example 1, except that Example 2 further includes an adjustable pressure reducing device 31, which is connected to the gas outlet of the gas-liquid separator 3 via the seventh pipeline 302. When the boiling point of the organic solvent in the reactor is too high, activating the adjustable pressure reducing device 31 can reduce the vapor pressure of the mixed gas in the system, thereby lowering the azeotropic point of the mixed vapor and reducing the high-temperature reflux water separation heating energy consumption by more than 20%, fully meeting the requirements of lean production.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent modifications, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A blockage-resistant reflux water separation reaction device, characterized in that: The invention comprises a reactor (1), a condenser (2), a gas-liquid separator (3), a water separator (4), a receiving storage tank (5), a first pipeline (101), a second pipeline (201), a third pipeline (301), a fourth pipeline (402), a fifth pipeline (401), and a water level control system. The condenser (2) is arranged above the reactor (1). The top of the reactor (1) is connected to the hot steam inlet of the condenser (2) through the first pipeline (101). The liquid outlet of the condenser (2) is connected to the gas-liquid separator (3) through the second pipeline (201). The liquid outlet of the gas-liquid separator (3) is connected to the water separator (4) through the third pipeline (301), and the third pipeline (301) is inserted into the water separator (4). The upper end of the water separator (4) is connected to the reactor (1) through the fourth pipeline (402), and the lower end of the water separator (4) is connected to the receiving tank (5) through the fifth pipeline (401); a water level control system is connected between the water separator (4), the condenser (2), and the receiving tank (5), and the water level control system includes an upper sensor (44), a lower sensor (45), a water inlet valve (21), a drain valve (42), and a control device (61); the upper sensor (44) and the lower sensor (45) are located in the water separator (4); the water inlet valve (21) is connected to the hot steam inlet of the condenser (2) through a sixth pipeline (601), and the drain valve (42) is located on the fifth pipeline (401).

2. The reflux water separation reaction device according to claim 1, characterized in that: It also includes an adjustable pressure reducing device (31), which is connected to the gas outlet end of the gas-liquid separator (3) through a seventh pipeline (302).

3. The reflux water separation reaction device according to claim 1, characterized in that: The gas outlet end of the gas-liquid separator (3) is connected to the top end of the receiving storage tank (5) via an eighth pipeline (501).

4. The reflux water separation reaction device according to claim 1, characterized in that: A two-phase interface observation mirror (46) is also installed on the outer shell of the water separator (4).

5. The reflux water separation reaction device according to claim 4, characterized in that: The upper end of the two-phase interface observation mirror (46) is higher than the upper sensor (44), and the lower end is lower than the lower sensor (45).

6. The reflux water separation reaction device according to claim 5, characterized in that: The two-phase interface observation mirror (46) is a glass mirror.

7. The reflux water separation reaction device according to claim 1, characterized in that: The fourth pipeline (402) is equipped with a one-way check valve (41).

8. The reflux water separation reaction device according to claim 3, characterized in that: The eighth pipeline (501) is equipped with a regulating valve (51).

9. The reflux water separation reaction device according to claim 1, characterized in that: The water inlet valve (21) is an adjustable two-way water inlet valve, and the water drain valve (42) is a one-way check valve.

10. The reflux water separation reaction device according to claim 1, characterized in that: The condenser (2) comprises one or more condensation towers connected in series.

11. The reflux water separation reaction device according to claim 1, characterized in that: The reactor (1), condenser (2), gas-liquid separator (3), water separator (4), receiving storage tank (5), first pipeline (101), second pipeline (201), third pipeline (301), fourth pipeline (402), fifth pipeline (401), sixth pipeline (601), upper sensor (44), lower sensor (45), water inlet valve (21), and drain valve (42) are connected or welded via flanges or chuck quick-install connections.

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