Condensation mechanism for recycling 3-hydroxypropionitrile

Abstract

The utility model relates to the technical field of 3-hydroxypropionitrile recovery, in particular to a condensing mechanism for 3-hydroxypropionitrile recovery, which comprises a condensing box, and a first condensing pipe, a second condensing pipe and a third condensing pipe are sequentially arranged in the condensing box from top to bottom. The first condensation pipe, the second condensation pipe and the third condensation pipe are all sleeved with cooling pipes. Inlet gas can be condensed through cooling water between the condensation pipes and the cooling pipes, the cooling pipes are arranged on the condensation pipes in a sleeving mode, so that the cooling water makes full contact with the condensation pipes, the gas condensation effect is enhanced, the gas sequentially passes through the first condensation pipe, the second condensation pipe and the third condensation pipe, a multi-stage condensation path is formed, and the condensation efficiency is improved. The condensation time and the condensation area of the gas are increased, the condensation effect is further improved, cooling water in the water tank can be pumped into the cooling pipe through the liquid pump box and flows out through the liquid outlet pipe, and circulation flow condensation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of 3-hydroxypropionitrile recovery technology, and in particular to a condensation mechanism for 3-hydroxypropionitrile recovery. Background Technology

[0002] 3-Hydroxypropionitrile is an important chemical intermediate widely used in the synthesis of biodegradable plastics and other chemicals. In industrial production processes, the recovery and purification of 3-hydroxypropionitrile waste gas is a crucial step, with condensation recovery being a commonly used technique that offers significant economic benefits and environmental protection.

[0003] Currently, when condensing the gas generated from the evaporation of the raw liquid, the gas is generally introduced into the tank and condensed through the cooling pipes around the tank. However, due to the large amount of gas inside the tank, the condensation efficiency is low. Utility Model Content

[0004] The purpose of this invention is to solve the problem of low condensation efficiency caused by a large amount of gas inside the tank in the existing technology. It provides a condensation mechanism for 3-hydroxypropionitrile recovery. By having a cooling pipe sleeved on the condenser pipe, the cooling water can be in full contact with the condenser pipe, which enhances the condensation effect on the gas. The gas passes through the first condenser pipe, the second condenser pipe and the third condenser pipe in sequence, forming a multi-stage condensation path, which increases the condensation time and condensation surface of the gas.

[0005] To achieve the above objectives, this utility model provides a condensation mechanism for 3-hydroxypropionitrile recovery, including a condensation box. Inside the condensation box, a first condenser, a second condenser, and a third condenser are arranged sequentially from top to bottom. Cooling pipes are fitted around the first, second, and third condenser pipes. The second condenser is connected to the first and third condenser pipes via a connecting pipe. Adjacent cooling pipes are connected via water pipes. One end of the first condenser is connected to an air inlet pipe, and one end of the third condenser is connected to a drain pipe. The cooling pipes are connected to an inlet pipe and an outlet pipe. The inlet pipe is connected to a water tank via a pump box. A refrigeration chamber is installed on the water tank, and a temperature detector is installed inside the water tank. The water tank is connected to the outlet pipe.

[0006] As a further description of the above technical solution: a liquid storage tank is provided below the drain pipe, a control box is provided outside the condensation box, a control panel is provided on the control box, and a door is provided on the condensation box.

[0007] As a further description of the above technical solution: the first condenser, the second condenser and the third condenser are all inclined tubes, the first condenser and the third condenser are inclined in the same direction, and the second condenser and the third condenser are inclined in opposite directions.

[0008] As a further description of the above technical solution: the end of the third condenser tube away from the drain pipe is connected to a gas guide pipe, the gas guide pipe is connected to the gas inlet pipe, and a control valve is provided on the gas guide pipe.

[0009] As a further description of the above technical solution: a precooling box is provided on one side of the condensing box, the inlet pipe is located inside the precooling box, and a water inlet pipe and a drain pipe are provided on the precooling box.

[0010] As a further description of the above technical solution: an exhaust pipe is provided on one side of the drain pipe.

[0011] As a further description of the above technical solution: a fixing plate is provided inside the condensation box.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] This invention utilizes cooling water between the condenser and cooling pipes to condense incoming gas. The cooling pipes, fitted onto the condenser, ensure full contact between the cooling water and the condenser, enhancing the condensation effect. The gas sequentially passes through the first, second, and third condenser pipes, forming a multi-stage condensation path. This increases the condensation time and surface area, further improving the condensation effect. A pump box draws cooling water from the tank into the cooling pipes, which then flows out through the outlet pipe, achieving circulating condensation. A temperature detector monitors the temperature of the cooling water inside the tank. When the temperature exceeds a set value, the refrigeration unit automatically activates to cool the liquid inside the tank, further enhancing the condensation effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the condensation mechanism in one embodiment of the present invention;

[0015] Figure 2 This is an internal schematic diagram of the condensation mechanism in one embodiment of the present invention;

[0016] Figure 3 for Figure 2 A schematic diagram of the intermediate cooling pipe.

[0017] Legend:

[0018] 1. Condensation chamber; 2. First condenser tube; 3. Second condenser tube; 4. Third condenser tube; 5. Cooling tube; 6. Water pipe; 7. Air inlet pipe; 8. Drain pipe; 9. Liquid inlet pipe; 10. Liquid outlet pipe; 11. Liquid pump box; 12. Water tank; 13. Refrigeration chamber; 14. Temperature detector; 15. Liquid storage tank; 16. Control box; 17. Control panel; 18. Chamber door; 19. Air inlet pipe; 20. Control valve; 21. Precooling chamber; 22. Water inlet pipe; 23. Drain pipe; 24. Exhaust pipe; 25. Fixing plate; 26. Connecting pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] like Figure 1-3As shown, the condensation mechanism for 3-hydroxypropionitrile recovery of this utility model includes a condensation box 1. Inside the condensation box 1, a first condensing pipe 2, a second condensing pipe 3, and a third condensing pipe 4 are arranged sequentially from top to bottom. Cooling pipes 5 are sleeved on the outside of the first condensing pipe 2, the second condensing pipe 3, and the third condensing pipe 4. The second condensing pipe 3 is connected to the first condensing pipe 2 and the third condensing pipe 4 through a connecting pipe 26. Adjacent cooling pipes 5 are connected through a water guide pipe 6. One end of the first condensing pipe 2 is connected to an air inlet pipe 7, and one end of the third condensing pipe 4 is connected to a drain pipe 8. The cooling pipes 5 are connected to an inlet pipe 9 and an outlet pipe 10. The inlet pipe 9 is connected to a water tank 12 through a pump box 11. A refrigeration box 13 is installed on the water tank 12. A temperature detector 14 is installed inside the water tank 12. The water tank 12 is connected to the outlet pipe 10 to enhance the condensation effect.

[0023] In the technical solution of this utility model, the cooling water between the condenser tube and the cooling pipe 5 can condense the incoming gas. The cooling pipe 5 is sleeved on the condenser tube, so that the cooling water and the condenser tube are in full contact, which enhances the condensation effect on the gas. The gas passes through the first condenser tube 2, the second condenser tube 3 and the third condenser tube 4 in sequence, forming a multi-stage condensation path. The condensation time and condensation surface of the gas are increased, further improving the condensation effect. The cooling water in the water tank 12 can be drawn into the cooling pipe 5 by the liquid pump box 11 and flows out through the liquid outlet pipe 10 to realize the circulating flow condensation. The temperature detector 14 can detect the temperature of the cooling water inside the water tank 12. When the temperature of the cooling water inside the water tank 12 exceeds the set value, the refrigeration box 13 will automatically work to cool the liquid inside the water tank 12.

[0024] like Figure 1 and Figure 2 As shown, specifically, a storage tank 15 is provided below the drain pipe 8, a control box 16 is provided outside the condenser box 1, a control panel 17 is provided on the control box 16, and a door 18 is provided on the condenser box 1; the operation of the internal components of the condenser box 1 can be controlled through the control box 16, various parameters can be adjusted through the control panel 17, and the storage tank 15 can be easily put in and taken out through the door 18.

[0025] like Figure 2 and Figure 3 As shown, specifically, the first condenser 2, the second condenser 3, and the third condenser 4 are all inclined tubes. The first condenser 2 and the third condenser 4 are inclined in the same direction, while the second condenser 3 and the third condenser 4 are inclined in opposite directions. The use of inclined tubes for the first condenser 2, the second condenser 3, and the third condenser 4 facilitates the downstream recovery of the condensed liquid.

[0026] like Figure 2 and Figure 3As shown, specifically, the end of the third condenser 4 furthest from the drain pipe 8 is connected to a gas guide pipe 19, which is connected to the inlet pipe 7. A control valve 20 is installed on the gas guide pipe 19. By opening the control valve 20, the uncondensed gas can re-enter the inlet pipe 7 through the gas guide pipe 19, and then re-enter the first condenser 2, the second condenser 3, and the third condenser 4 for condensation, further enhancing the condensation effect.

[0027] like Figure 1 and Figure 2 As shown, specifically, a precooling box 21 is provided on one side of the condenser box 1. Part of the air inlet pipe 7 is located inside the precooling box 21. A water inlet pipe 22 and a drain pipe 23 are provided on the precooling box 21. The water inside the precooling box 21 can precool the gas inside the air inlet pipe 7, reducing the gas temperature, making it easier for the gas to be condensed when it enters the condenser box 1, thus reducing the power consumption of the condenser pipe. At the same time, the water inside the precooling box 21 will be heated, allowing for waste heat recovery and utilization. The precooling water inside the precooling box 21 can be easily replaced through the water inlet pipe 22 and the drain pipe 23.

[0028] like Figure 1 and Figure 2 As shown, specifically, an exhaust pipe 24 is provided on one side of the drain pipe 8, and a fixing plate 25 is provided inside the condenser box 1; the uncondensed gas can be discharged through the exhaust pipe 24, and the fixing plate 25 can enhance the stability of the first condenser pipe 2, the second condenser pipe 3, the third condenser pipe 4 and the cooling pipe 5.

[0029] Working principle: The cooling water between the condenser tube and the cooling pipe 5 condenses the incoming gas. The cooling pipe 5 is fitted onto the condenser tube, allowing the cooling water to fully contact the condenser tube, enhancing the condensation effect on the gas. The gas passes through the first condenser tube 2, the second condenser tube 3, and the third condenser tube 4 in sequence, forming a multi-stage condensation path. This increases the condensation time and condensation surface area, further improving the condensation effect. The liquid pump box 11 draws the cooling water from the water tank 12 into the cooling pipe 5 and out through the liquid outlet pipe 10, achieving circulating condensation. The temperature detector 14 detects the temperature of the cooling water inside the water tank 12. When the temperature of the cooling water inside the water tank 12 exceeds the set value, the refrigeration box 13 will automatically work to cool the liquid inside the water tank 12, enhancing the condensation effect.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A condensing mechanism for recovering 3-hydroxypropionitrile, characterized by comprising: Including condensing box (1), the first condensing tube (2), the second condensing tube (3) and the third condensing tube (4) are sequentially arranged from below to above inside the condensing box (1), the first condensing tube (2), the second condensing tube (3) and the third condensing tube (4) are all sleeved with cooling pipe (5) outside, the second condensing tube (3) is connected with the first condensing tube (2) and the third condensing tube (4) through connecting pipe (26), adjacent cooling pipe (5) is connected through water guide pipe (6), one end of the first condensing tube (2) is connected with air inlet pipe (7), one end of the third condensing tube (4) is connected with liquid discharge pipe (8); The cooling pipe (5) is connected with liquid inlet pipe (9) and liquid outlet pipe (10), the liquid inlet pipe (9) is connected with water tank (12) through liquid pumping pump box (11), refrigeration box (13) is arranged on the water tank (12), temperature detector (14) is arranged inside the water tank (12), and the water tank (12) is connected with the liquid outlet pipe (10).

2. The condensing mechanism for recovering 3-hydroxypropionitrile according to claim 1, characterized by: The liquid discharge pipe (8) is provided with a liquid storage tank (15) below, the condensing box (1) is provided with a control box (16) outside, the control box (16) is provided with a control panel (17) on the control box (16), and the condensing box (1) is provided with a box door (18) on the condensing box (1).

3. The condensing mechanism for recovering 3-hydroxypropionitrile according to claim 1, characterized by: The first condensing tube (2), the second condensing tube (3) and the third condensing tube (4) are all inclined pipes, the first condensing tube (2) and the third condensing tube (4) are inclined in the same direction, and the second condensing tube (3) and the third condensing tube (4) are inclined in opposite directions.

4. The condensing mechanism for recovering 3-hydroxypropionitrile according to claim 1, characterized by: The third condensing tube (4) is connected with air guide pipe (19) at one end away from the liquid discharge pipe (8), the air guide pipe (19) is connected with the air inlet pipe (7), and the air guide pipe (19) is provided with control valve (20) on the air guide pipe (19).

5. The condensing mechanism for 3-hydroxypropionitrile recovery according to claim 1, characterized by: One side of the condensing box (1) is provided with a precooling box (21), part of the pipe body of the air inlet pipe (7) is located inside the precooling box (21), and the precooling box (21) is provided with water adding pipe (22) and drain pipe (23).

6. The condensing mechanism for 3-hydroxypropionitrile recovery according to claim 1, characterized by: One side of the liquid discharge pipe (8) is provided with exhaust pipe (24).

7. The condensing mechanism for 3-hydroxypropionitrile recovery according to claim 1, characterized by: The condensing box (1) is provided with a fixed plate (25) inside.

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