An intermediate ammonia cooling current collecting device with temperature-controllable dye

Abstract

The utility model discloses an intermediate body ammonia cooling current collection equipment with temperature control type dye, including condensing current collection cylinder and cooling current collection subassembly, the inside installation of condensing current collection cylinder has cooling current collection subassembly, the cooling current collection subassembly includes the flow pipe of setting at the bottom of condensing current collection cylinder, and condensing current collection cylinder top is equipped with the collecting pipe, the cooling current collection subassembly includes the composite coil pipe of setting in the inside of condensing current collection cylinder, and both ends of composite coil pipe are equipped with the connecting pipe. The intermediate body ammonia cooling current collection equipment with temperature control type dye, ensure that high temperature ammonia vapor can with the cooling liquid in composite coil pipe and carry out sufficient, fast heat exchange to realize the efficient control to the temperature of condensing current collection cylinder inside, and the reinforced condensation effect can ensure that most gaseous ammonia is condensed as liquid completely and is recycled, effectively prevent the expensive ammonia in gaseous form with hydrogen and other incondensable gases into subsequent section, directly solve the problem of resource waste from the source.

Description

Technical Field

[0001] This utility model relates to the field of dye processing equipment, specifically a cooling and collection device for ammonia intermediates in temperature-controlled dyes. Background Technology

[0002] Intermediates for dyes are key chemical raw materials required for the synthesis of dyes. They are not usually dyes themselves, but through a series of chemical reactions (such as diazotization, coupling, sulfonation, alkali fusion, etc.), the molecular skeleton and chromophore of dyes can be constructed.

[0003] Regarding patents concerning dye intermediate processing equipment, a search revealed Chinese patent CN104725897B, which discloses an eco-friendly processing method for dyes or dye intermediates. The method includes: adding an appropriate amount of water and an alkali to the dye or dye intermediate; stirring the reaction system for 3 to 5 hours under normal pressure and 50–90°C or 0.1–0.5 MPa and 100–150°C; and filtering and washing with water after the reaction to obtain the processed dye or intermediate.

[0004] While the aforementioned device can significantly reduce the generation of harmful substances such as tetrachlorophenol, pentachlorophenol, chlorobenzene, and chlorotoluene, in practical applications, ammonia is used as a protective gas or circulating medium in processes where dye intermediates are produced from aromatic nitro compounds (such as nitrobenzene) via catalytic hydrogenation reduction to generate important intermediates such as aromatic amino compounds (such as aniline). This reaction generates a large amount of high-temperature ammonia. To recover this expensive ammonia for recycling, reduce costs, and purify hydrogen and other gases, the high-temperature gaseous ammonia must be liquefied and collected using a condenser for reuse. However, the condenser cannot control the temperature, causing the expensive ammonia to enter subsequent processes in gaseous form along with non-condensable gases like hydrogen, resulting in resource waste. Utility Model Content

[0005] The purpose of this invention is to provide a cooling and collection device for intermediate ammonia of temperature-controlled dyes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a cooling and collecting device for ammonia intermediates in temperature-controlled dyes is provided, comprising a condenser collecting cylinder and a cooling and collecting assembly. The cooling and collecting assembly is installed inside the condenser collecting cylinder. The cooling and collecting assembly includes a distribution pipe disposed at the bottom of the condenser collecting cylinder and a collecting pipe disposed at the top of the condenser collecting cylinder. The cooling and collecting assembly includes a composite coil disposed inside the condenser collecting cylinder, and both ends of the composite coil are provided with connecting pipes.

[0007] Furthermore, multiple sets of composite coils are arranged inside the condenser manifold, with the distance between adjacent sets of composite coils being consistent. The composite coils have a spiral structure, and the cooling manifold assembly also includes a coolant inlet pipe and a coolant outlet pipe.

[0008] Furthermore, both ends of the multiple sets of composite coils are connected to the coolant inlet pipe and the coolant outlet pipe respectively through connecting pipes. The end of the multiple sets of coolant inlet pipes is connected to the distribution pipe, and the end of the multiple sets of coolant outlet pipes is connected to the collection pipe.

[0009] Furthermore, both the collecting pipe and the distribution pipe are circular, and the collecting pipe is fixed with an outlet pipe, while the distribution pipe is fixed with an inlet pipe.

[0010] Furthermore, the composite coil has a regular hexagonal cross-section and multiple sets of heat exchange surfaces are equidistantly arranged on it. Multiple sets of heat exchange plates are equidistantly arranged on the heat exchange surfaces, and a cooling channel is provided inside the composite coil.

[0011] Furthermore, the heat exchange plates are spirally distributed along the length of the composite coil, and the cross-section of the heat exchange plates is "S" shaped, forming a heat exchange space between two adjacent sets of heat exchange plates.

[0012] Furthermore, the upper side wall of the condenser collector is provided with an ammonia vapor inlet pipe, and an ammonia liquid outlet pipe is installed at its bottom. The inner wall of the condenser collector is provided with multiple sets of baffles.

[0013] Furthermore, the distance between two adjacent sets of baffles is consistent, and the cross-section of the baffles is "L" shaped, with multiple sets of drop ports evenly spaced on the baffles.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution uses multiple sets of equidistant composite coils and S-shaped heat exchange fins to form a highly efficient and controllable condensation heat exchange system. This ensures that high-temperature ammonia vapor can fully and rapidly exchange heat with the coolant inside the composite coils, thereby achieving efficient control of the internal temperature of the condenser manifold. The enhanced condensation effect ensures that most of the gaseous ammonia is completely condensed into liquid and recovered, effectively preventing expensive ammonia from entering subsequent processes in gaseous form along with non-condensable gases such as hydrogen, thus directly solving the problem of resource waste at the source.

[0015] 2. In this scheme, the high-temperature ammonia vapor will be repeatedly blocked and guided by multiple sets of equidistant "L"-shaped baffles on the inner wall during its movement inside the condenser and collector. This greatly prolongs the flow path and residence time of the vapor in the cylinder, forcing the vapor to flow along the tortuous channel formed by the "L"-shaped baffles, thereby enabling it to have more full and uniform contact and heat exchange with multiple sets of composite coils. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the flow distribution pipe and its connection structure of this utility model; Figure 3 This is a schematic diagram of the collection tube and its connection structure of the present invention; Figure 4 This is a three-dimensional view of the composite coil structure of this utility model; Figure 5 This is a structural diagram of the composite coil of this utility model; Figure 6 This is a partial structural schematic diagram of the composite coil of this utility model; Figure 7 This is a schematic diagram of the baffle plate and its connection structure of the present invention.

[0017] The following labels are used in the diagram: 100, condenser manifold; 101, baffle plate; 102, drop outlet; 103, ammonia vapor inlet pipe; 104, ammonia liquid outlet pipe; 200, cooling manifold assembly; 21, distribution pipe; 211, inlet pipe; 22, coolant inlet pipe; 23, connecting pipe; 24, composite coil; 241, cooling channel; 242, heat exchange surface; 243, heat exchange plate; 244, heat exchange space; 25, coolant outlet pipe; 26, collection pipe; 261, outlet pipe. Detailed Implementation

[0018] Please see Figures 1-7 This utility model provides a cooling and collecting device for ammonia intermediates of temperature-controlled dyes, including a condensation and collecting cylinder 100 and a cooling and collecting assembly 200. The cooling and collecting assembly 200 is installed inside the condensation and collecting cylinder 100. The cooling and collecting assembly 200 includes a distribution pipe 21 at the bottom of the condensation and collecting cylinder 100 and a collecting pipe 26 at the top of the condensation and collecting cylinder 100. The cooling and collecting assembly 200 includes a composite coil 24 inside the condensation and collecting cylinder 100, and both ends of the composite coil 24 are provided with connecting pipes 23.

[0019] In a preferred embodiment, multiple sets of composite coils 24 are arranged inside the condenser manifold 100, with the distance between adjacent sets of composite coils 24 being consistent. The composite coils 24 have a spiral structure, and the cooling manifold assembly 200 also includes a coolant inlet pipe 22 and a coolant outlet pipe 25.

[0020] Both ends of the multiple sets of composite coils 24 are connected to the coolant inlet pipe 22 and the coolant outlet pipe 25 respectively through the connecting pipes 23. The end of the multiple sets of coolant inlet pipes 22 is connected to the distribution pipe 21, and the end of the multiple sets of coolant outlet pipes 25 is connected to the collection pipe 26.

[0021] Both the collecting pipe 26 and the distribution pipe 21 are circular, and the collecting pipe 26 is fixed with an outlet pipe 261, while the distribution pipe 21 is fixed with an inlet pipe 211.

[0022] The composite coil 24 has a regular hexagonal cross section, and multiple heat exchange surfaces 242 are equally spaced on it. Multiple heat exchange plates 243 are equally spaced on the heat exchange surfaces 242, and a cooling channel 241 is opened inside the composite coil 24.

[0023] The heat exchange fins 243 are spirally distributed along the length of the composite coil 24, and the cross-section of the heat exchange fins 243 is "S" shaped, forming a heat exchange space 244 between two adjacent sets of heat exchange fins 243.

[0024] like Figures 1-6 As shown: High-temperature ammonia vapor enters the interior of the condenser manifold 100 from the ammonia vapor inlet pipe 103, and comes into full contact with multiple sets of composite coils 24 arranged at equal intervals inside. The composite coils 24 have a regular hexagonal cross section, which increases their external heat exchange surface area. The heat of the steam is transferred to the coolant flowing in the cooling channel 241 through the tube wall of the composite coils 24. At the same time, the steam comes into contact with multiple sets of heat exchange surfaces 242 arranged at equal intervals on the composite coils 24, as well as multiple sets of heat exchange plates 243 arranged at equal intervals on the heat exchange surfaces 242, which have an "S" shaped cross section and are spirally distributed along the length of the composite coils 24. The heat exchange space 244 formed between two adjacent sets of heat exchange plates 243 greatly increases the contact area with the steam and disturbs the steam flow, thereby achieving efficient and uniform condensation of the high-temperature steam inside the condenser manifold 100.

[0025] The unique hexagonal cross-section of the composite coil 24 and the heat exchange surface 242 with spirally distributed "S"-shaped heat exchange plates 243 together form an extended heat exchange surface, which not only significantly increases the contact area with high-temperature steam, but also the "S"-shaped cross-section and spiral distribution can effectively disrupt the steam boundary layer and enhance turbulence, thereby greatly improving the heat transfer and condensation efficiency and uniformity, ensuring the high efficiency and stability of the dye intermediate condensation process.

[0026] Working principle: Coolant enters the distribution pipe 21 from the inlet pipe 211, and then is distributed to the interior of multiple sets of connecting pipes 23 through multiple sets of coolant inlet pipes 22. It then enters the composite coil 24 through the connecting pipes 23. Simultaneously, high-temperature steam enters the condenser manifold 100 from the ammonia steam inlet pipe 103 and exchanges heat with the multiple sets of composite coils 24. The composite coils 24 are equidistantly arranged in a spiral shape inside the condenser manifold 100, and have cooling channels 241 inside. When the coolant flows in the cooling channels 241, it passes through the heat exchange surface 242 on the composite coils 24 and the equidistantly arranged multiple sets of heat exchange fins 243. The heat exchange fins 243 are spirally distributed along the length of the composite coil 24 and have an "S" shaped cross-section. A heat exchange space 244 is formed between two adjacent sets of heat exchange fins 243 to enhance turbulence and heat exchange area, thereby achieving efficient condensation of the high-temperature steam inside the condenser collector 100. The condensed liquid fluid can be discharged from the ammonia outlet pipe 104 and collected through an external pipe. At the same time, the coolant enters the coolant outlet pipe 25 through the connecting pipe 23 and is collected in the collection pipe 26, and finally flows out from the outlet pipe 261, realizing a continuous and uniform condensation and collection process.

[0027] The equidistant arrangement and spiral shape of multiple composite coils 24, combined with "S"-shaped heat exchange plates 243 and heat exchange space 244, significantly increase the heat exchange area and fluid disturbance, improve heat exchange efficiency and cooling uniformity. At the same time, the circular design of the distribution pipe 21 and the collection pipe 26 ensures the stability of fluid distribution, thereby effectively controlling the temperature of dye intermediates and improving production quality and energy efficiency.

[0028] A highly efficient and controllable condensation heat exchange system is formed by multiple sets of equidistant composite coils 24 and heat exchange fins 243 with an "S"-shaped cross-section. The large heat exchange area and the strong turbulence caused by the heat exchange space 244 formed between adjacent sets of "S"-shaped heat exchange fins 243 ensure that high-temperature ammonia vapor can fully and quickly exchange heat with the coolant in the composite coils 24, thereby achieving efficient control of the internal temperature of the condensation manifold 100. The enhanced condensation effect ensures that most of the gaseous ammonia is completely condensed into liquid and recovered, effectively preventing expensive ammonia from entering subsequent processes in gaseous form with non-condensable gases such as hydrogen, directly solving the problem of resource waste from the source. At the same time, the circular design of the distribution pipe 21 and the collection pipe 26, combined with the layout of multiple sets of coils, further ensures the uniform distribution of cooling medium flow and temperature, consolidating the overall temperature control condensation efficiency.

[0029] In a preferred embodiment, an ammonia vapor inlet pipe 103 is provided on the upper side wall of the condenser collector 100, and an ammonia liquid outlet pipe 104 is installed at its bottom. Multiple sets of baffles 101 are provided on the inner wall of the condenser collector 100.

[0030] The distance between two adjacent sets of baffles 101 is consistent, and the cross-section of the baffles 101 is "L" shaped. Multiple sets of drop ports 102 are provided at equal intervals on the baffles 101.

[0031] like Figure 1 and Figure 7 As shown: During the movement of high-temperature ammonia vapor entering from the ammonia vapor inlet pipe 103 in the condenser collector 100, it will be blocked and guided multiple times by multiple sets of equidistant L-shaped baffles 101 on the inner wall. This greatly prolongs the flow path and residence time of the vapor in the cylinder, forcing the vapor to flow along the tortuous channel formed by the L-shaped baffles 101, so that it can have more full and uniform contact and heat exchange with multiple sets of composite coils 24. Meanwhile, the multiple sets of drop ports 102 equidistantly arranged on the baffle plate 101 ensure that the condensed liquid ammonia can pass smoothly through and fall to the ammonia liquid outlet pipe 104 at the bottom for discharge, without accumulating on the baffle plate 101 to form a liquid film that hinders steam flow and heat transfer. The baffle structure and the composite coil 24 work together to significantly improve the condensation efficiency and recovery rate of ammonia vapor, and prevent the escape of gaseous ammonia to the greatest extent.

Claims

1. An intermediate ammonia cooling current collecting device with temperature-controllable dye, comprising a condensing current collecting cylinder (100) and a cooling current collecting assembly (200), characterized in that: The cooling collector (100) is equipped with a cooling collector assembly (200). The cooling collector assembly (200) includes a distribution pipe (21) at the bottom of the cooling collector (100) and a collection pipe (26) at the top of the cooling collector (100). The cooling collector assembly (200) includes a composite coil (24) inside the cooling collector (100) and connecting pipes (23) at both ends of the composite coil (24).

2. The intermediate ammonia cooling current collecting device with temperature-controlled dye according to claim 1, characterized in that: Multiple sets of composite coils (24) are arranged inside the condenser manifold (100). The distance between two adjacent sets of composite coils (24) is consistent. The composite coils (24) have a spiral structure. The cooling manifold assembly (200) also includes a coolant inlet pipe (22) and a coolant outlet pipe (25).

3. The intermediate ammonia cooling current collecting device with temperature-controlled dye according to claim 2, characterized in that: Both ends of the multiple sets of composite coils (24) are connected to the coolant inlet pipe (22) and the coolant outlet pipe (25) respectively through connecting pipes (23). The end of the multiple sets of coolant inlet pipes (22) is connected to the distribution pipe (21), and the end of the multiple sets of coolant outlet pipes (25) is connected to the collection pipe (26).

4. The intermediate ammonia cooling current collecting device with temperature controlled dye according to claim 3, characterized in that: Both the collecting pipe (26) and the distribution pipe (21) are circular, and the collecting pipe (26) is fixed with an outlet pipe (261), and the distribution pipe (21) is fixed with an inlet pipe (211).

5. The intermediate ammonia cooling busbar apparatus with temperature-controlled dye according to claim 2, characterized in that: The composite coil (24) has a regular hexagonal cross section and multiple heat exchange surfaces (242) are equidistantly arranged on it. Multiple heat exchange plates (243) are equidistantly arranged on the heat exchange surfaces (242). Cooling channels (241) are opened inside the composite coil (24).

6. The intermediate ammonia cooling current collecting device with temperature controlled dye according to claim 5, characterized in that: The heat exchange plates (243) are spirally distributed along the length of the composite coil (24), and the cross-section of the heat exchange plates (243) is "S" shaped. A heat exchange space (244) is formed between two adjacent sets of heat exchange plates (243).

7. The ammonia cooling and collection device for intermediates of temperature-controlled dyes according to claim 1, characterized in that: The condenser collector (100) is provided with an ammonia vapor inlet pipe (103) on the upper side wall and an ammonia liquid outlet pipe (104) installed at its bottom. Multiple sets of baffles (101) are provided on the inner wall of the condenser collector (100).

8. The intermediate ammonia cooling current collecting device with temperature controlled dye according to claim 7, characterized in that: The distance between two adjacent sets of the baffles (101) is consistent, and the cross-section of the baffles (101) is "L" shaped. Multiple sets of drop ports (102) are provided at equal intervals on the baffles (101).

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