Condensing device for producing corrosion and scale inhibitor

Abstract

The utility model provides a condensing device for corrosion and scale inhibitor production, including condensing bin, cover, the front surface fixedly connected with cover of condensing bin, the condensing bin is hollow structure, the inside fixedly connected with fan of cover, the air inlet end intercommunication condensing bin of fan, the inboard fixedly connected with a plurality of fins of condensing bin, the fin is multichannel bending formula. The utility model has the advantages of: the design of fin, the condensing heat transfer area of cooling pipe is greatly improved, and the condensing effect is good, applies a layer of stable hydrophobic or superhydrophobic nanometer coating on all fin surfaces and the outer wall of cooling pipe (air contact surface) in the bin body. The purpose is to make the condensed water gather and form beads and roll down. Reducing the surface tension is conducive to the formation of beads and roll down, effectively reduces the sticky water film formed on the condensing surface, greatly improves the heat transfer efficiency. Quick drainage reduces the retention time of condensation water, reduces the risk of crystallization and scaling on the surface of fin and cooling pipe.

Description

Technical Field

[0001] This utility model relates to the field of corrosion and scale inhibitor production technology, and in particular to a condensation device for producing corrosion and scale inhibitors. Background Technology

[0002] In the production process of corrosion and scale inhibitors (such as polyphosphates, organophosphonic acids, copolymers, etc.), high-temperature steam is often released (e.g., during reactor evaporation and concentration processes). This steam needs to be rapidly condensed and recovered to reduce energy consumption, minimize the release of volatile organic compounds, and recover useful components. Currently, the widely used air-cooled condensing units have the following key problems:

[0003] Uneven airflow distribution: During forced ventilation, the airflow path is not optimized, which can easily form "short circuits" or vortex dead zones, resulting in insufficient local heat exchange; Limited heat transfer coefficient: The condensate on the metal surface forms a viscous water film, which greatly reduces the heat transfer efficiency between the air and the pipe wall, forcing the fan to operate at high power for a long time.

[0004] Corrosion and scale inhibitor vapors often carry trace film-forming components (such as organophosphonic acids and polymer residues), posing serious risks during condensation: crystallization adhesion: solutes in the stagnant liquid film concentrate and precipitate, forming hard scale on the surface of cooling pipes and fins; viscous deposition: organic polymers adhere and accumulate on metal surfaces, forming a gel-like fouling layer. Therefore, a condensation device for the production of corrosion and scale inhibitors is proposed to solve these problems. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to provide a condensation device for the production of corrosion and scale inhibitors, so as to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0007] To achieve the above objectives, one embodiment of the present invention provides a condensation device for the production of corrosion and scale inhibitors, including a condensation chamber and a cover. The cover is fixedly connected to the front of the condensation chamber. The condensation chamber has a hollow structure. A fan is fixedly connected inside the cover. The air inlet of the fan is connected to the condensation chamber.

[0008] The inner side of the condensation chamber is fixedly connected with several fins, and the fins are multi-folded.

[0009] The fins are oriented in the same direction as the airflow, and cooling pipes are threaded through the wall of the condensation chamber. The cooling pipes are multi-layered and bent.

[0010] The cooling pipe is connected to the fins, one end of the cooling pipe is fixedly connected to a steam inlet, and the other end of the cooling pipe is fixedly connected to an outlet;

[0011] The bottom of the condensation chamber is fixedly connected to a bottom groove, the bottom surface of the bottom groove is inclined, and several drain pipes are fixedly connected to the bottom end of the bottom groove. The outer surface of the cooling pipes and fins is covered with a hydrophobic coating.

[0012] Preferably, the condensation chamber is made of aluminum alloy and is connected to the cover by screws.

[0013] The above technical solution is adopted: This condensation device is specially used for condensing the steam generated during the production of corrosion and scale inhibitors. The working process is as follows: the steam generated during the production of corrosion and scale inhibitors enters the cooling pipe through the steam inlet. The cooling pipe is multi-layered and bent. The cooling pipe is connected to the fins. When the fan is working, the air flows quickly through the surface of the cooling pipe and fins to condense the internal steam. The liquid drips into the bottom tank and is then discharged through the drain pipe.

[0014] Preferably, in any of the above embodiments, the fan includes a motor and fan blades, wherein the output end of the motor is fixedly connected to the fan blades.

[0015] The core structure of this device, employing the above technical solution, consists of a condensation chamber, fins, cooling pipes, a steam inlet, an outlet, and a hydrophobic coating. The condensation chamber is filled with parallel arrayed fins. When the fan operates, air enters the condensation chamber evenly through the fins, achieving uniform and comprehensive heat exchange and condensation with the fins and cooling pipes. This results in uniform steam condensation. Furthermore, the fin design significantly increases the condensation heat exchange area of ​​the cooling pipes, leading to excellent condensation performance.

[0016] A stable hydrophobic or superhydrophobic nano-coating is applied to the surface of all fins and the outer wall of the cooling pipes (the surfaces in contact with air) within the cooling chamber. The purpose is to allow condensate to quickly coalesce into beads and roll off. Reducing surface tension facilitates bead formation and effectively reduces the formation of a viscous water film on the condensation surface, significantly improving heat transfer efficiency. Rapid drainage reduces condensate retention time, lowering the risk of scale formation and crystallization on the fins and cooling pipe surfaces.

[0017] Preferably, in any of the above embodiments, the fins are made of copper and are welded to the inner wall of the condensation chamber.

[0018] Device structure composition: main structure and connections:

[0019] The condenser chamber has a hollow cavity structure, preferably made of aluminum alloy, which offers excellent thermal conductivity and lightweight advantages. A cover is screwed to the front of the condenser chamber for easy installation and maintenance.

[0020] A fan is fixedly installed inside the enclosure. The fan consists of a motor and fan blades, with the motor's output shaft fixedly connected to the fan blades. The fan's air inlet is directly connected to the internal cavity of the condenser. When the fan is running, outside air is drawn in from the back of the condenser or other openings, flows through the internal structure, and is then forced out of the enclosure by the fan.

[0021] Core heat exchange components – fins and piping: Numerous fins are fixedly welded to the inner wall of the condenser chamber. The fins are made of highly thermally conductive copper, and their orientation aligns with the direction of airflow through the condenser chamber. Each fin features a multi-bent design with obtuse angles, significantly increasing the effective convective heat transfer surface area.

[0022] The condensation chamber is permeated with multiple layers of bent cooling tubes. The bends in the cooling tubes are designed in a U-shape; to facilitate manufacturing and maintenance and reduce internal fluid resistance, the U-shaped bends are preferably located on the outside of the condensation chamber. The cooling tubes interlock with densely arranged fins, meaning the cooling tubes pass through pre-drilled holes in the fins (good contact can be ensured through welding or expansion joints), forming a tightly integrated tube-fin heat exchange structure that significantly increases the heat exchange area between the cooling tubes and the air.

[0023] One end of the cooling pipe is fixedly connected to a steam inlet for introducing high-temperature saturated / superheated steam generated during the corrosion and scale inhibitor production process. The other end of the cooling pipe is fixedly connected to an outlet for discharging the condensed fluid (mainly condensate, possibly containing a small amount of uncondensed gas).

[0024] Condensate collection system: A bottom trough is fixedly connected to the bottom of the condensate chamber. The internal space of the bottom trough is connected to the interior of the condensate chamber. The key design feature is that the bottom surface of the bottom trough is machined with a certain angle (such as tilting towards the drain pipe). This tilted bottom surface ensures that the condensate can flow naturally to the preset location.

[0025] At the lowest point of the sloping bottom of the trough, several drain pipes are fixedly connected. The drain pipes are used to discharge the collected condensate to an external recovery system (such as a storage tank or subsequent treatment unit).

[0026] Innovative Surface Treatment - Hydrophobic Coating: One of the core innovations is the application of a stable and durable hydrophobic coating to the outer surfaces of all fins (i.e., the surfaces in contact with air) within the condenser chamber, as well as the outer wall surfaces of all cooling pipes (i.e., the surfaces exposed to air for heat exchange). Preferably, this hydrophobic coating is a titanium dioxide nano-coating. This coating can be applied using mature surface treatment techniques such as sol-gel methods and post-spray curing.

[0027] Preferably, in any of the above embodiments, the bending angle of the fins is an obtuse angle, the bend of the cooling pipe is U-shaped, and the bend of the cooling pipe is located outside the condensation chamber.

[0028] Core Design: Uniform and Efficient Condensation: The forced ventilation (fan) combined with the dense, obtuse-angled copper fin array and the multi-layered bent cooling pipes provides a huge effective heat exchange area. The airflow is evenly distributed after being guided by the fins, ensuring efficient and uniform steam condensation.

[0029] Enhanced core heat exchange efficiency: The application of a titanium dioxide nano-hydrophobic coating is key to improving the performance of this device. It causes condensate to bead up and roll off rapidly, significantly reducing surface liquid film thermal resistance and substantially increasing the heat transfer coefficient between the fins and cooling pipes and the cooling air, resulting in a substantial improvement in overall condensation efficiency.

[0030] Targeted anti-scaling: The rapid condensate runoff feature is specifically designed to address the scaling risk caused by trace components carried by steam during the production of corrosion and scale inhibitors. It effectively slows down the scaling rate on heat exchange surfaces, reducing maintenance frequency and costs.

[0031] Preferably, in any of the above embodiments, the bottom tank is connected to the interior of the condensation chamber, and the hydrophobic coating is specifically a titanium dioxide nano-coating.

[0032] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0033] The condensation device for producing corrosion and scale inhibitors has fins arranged in parallel in the condensation chamber. When the fan is working, air enters the condensation chamber evenly through the fins, and the air exchanges heat with the fins and cooling pipes evenly and comprehensively, resulting in uniform steam condensation. At the same time, the fin design greatly increases the condensation heat exchange area of ​​the cooling pipes, resulting in good condensation effect.

[0034] A stable hydrophobic or superhydrophobic nano-coating is applied to the surface of all fins and the outer wall of the cooling pipes (the surfaces in contact with air) within the cooling chamber. The purpose is to allow condensate to quickly coalesce into beads and roll off. Reducing surface tension facilitates bead formation and effectively reduces the formation of a viscous water film on the condensation surface, significantly improving heat transfer efficiency. Rapid drainage reduces condensate retention time, lowering the risk of scale formation and crystallization on the fins and cooling pipe surfaces.

[0035] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0037] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0038] Figure 2This is a structural schematic diagram of the present invention from a second perspective;

[0039] Figure 3 This is a structural schematic diagram of the present invention from a third-view perspective;

[0040] Figure 4 This is a schematic diagram of the hydrophobic coating of this utility model.

[0041] In the diagram: 1-Condensation chamber, 2-Cover, 3-Fan, 4-Fins, 5-Cooling pipe, 6-Steam inlet, 7-Outlet, 8-Bottom tank, 9-Drain pipe, 10-Hydrophobic coating. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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.

[0044] like Figure 1-4 As shown, the condensation device for the production of this corrosion and scale inhibitor includes a condensation chamber 1 and a cover 2. The cover 2 is fixedly connected to the front of the condensation chamber 1. The condensation chamber 1 has a hollow structure. A fan 3 is fixedly connected inside the cover 2. The air inlet of the fan 3 is connected to the condensation chamber 1.

[0045] Several fins 4 are fixedly connected to the inner side of the condensation chamber 1. The fins 4 are multi-bent.

[0046] The fins 4 are oriented in the same direction as the airflow. Cooling pipes 5 are threaded through the wall of the condensation chamber 1. The cooling pipes 5 are multi-layered and bent.

[0047] Cooling pipe 5 is connected to fin 4. One end of cooling pipe 5 is fixedly connected to steam inlet 6, and the other end of cooling pipe 5 is fixedly connected to outlet 7.

[0048] The bottom of the condensation chamber 1 is fixedly connected to a bottom groove 8. The bottom surface of the bottom groove 8 is inclined. Several drain pipes 9 are fixedly connected to the bottom end of the bottom groove 8. The outer surfaces of the cooling pipes 5 and the fins 4 are covered with a hydrophobic coating 10.

[0049] Example 1: The condenser chamber 1 is made of aluminum alloy and is connected to the cover 2 by screws. The fan 3 includes a motor and fan blades, with the fan blades fixedly connected to the output end of the motor. The fins 4 are made of copper and are welded to the inner wall of the condenser chamber 1. The bending angle of the fins 4 is an obtuse angle, and the bend of the cooling pipe 5 is U-shaped, located outside the condenser chamber 1. The bottom groove 8 is connected to the interior of the condenser chamber 1, and the hydrophobic coating 10 is specifically a titanium dioxide nano-coating.

[0050] Example 2: This condensation device is specifically used for condensing the steam generated during the production of corrosion and scale inhibitors. The working process is as follows: the steam generated during the production of corrosion and scale inhibitors enters the cooling pipe 5 through the steam inlet 6. The cooling pipe 5 is multi-layered and bent. The cooling pipe 5 is connected to the fins 4. When the fan 3 is working, the air flows quickly through the surface of the cooling pipe 5 and the fins 4 to condense the internal steam. The liquid drips into the bottom tank 8 and is then drained through the drain pipe 9.

[0051] Main structure and connections:

[0052] The condensation chamber 1 is a hollow cavity structure, preferably made of aluminum alloy, which has the advantages of good thermal conductivity and lightweight. The front of the condensation chamber 1 is fixed to the cover 2 by screws for easy installation and maintenance.

[0053] A fan 3 is fixedly installed inside the enclosure 2. The fan 3 includes a motor and fan blades, and the output shaft of the motor is fixedly connected to the fan blades. The air inlet of the fan 3 is directly connected to the internal cavity of the condenser 1. When the fan 3 is running, external air is drawn in from the back of the condenser 1 or other openings, flows through the internal structure, and is forced out of the enclosure 2 by the fan 3.

[0054] Core heat exchange components - fins and piping: Numerous fins 4 are fixedly welded onto the inner wall of the condensation chamber 1. The fins 4 are made of copper with high thermal conductivity, and their orientation is consistent with the direction of airflow through the condensation chamber 1. Each fin 4 has a multi-bend design with obtuse angles, which greatly increases the effective convective heat transfer surface area.

[0055] Multiple layers of bent cooling pipes 5 penetrate the wall of the condensation chamber 1. The bends of the cooling pipes 5 are designed in a U-shape. To facilitate manufacturing and maintenance and reduce internal fluid resistance, the U-shaped bends are preferably located on the outside of the condensation chamber 1. The cooling pipes 5 intersect with the densely arranged fins 4, that is, the cooling pipes 5 pass through the reserved holes on the fins 4 (good contact can be ensured by welding or expansion), forming a tightly integrated tube-fin heat exchange structure, which significantly increases the heat exchange area between the cooling pipes 5 and the air.

[0056] One end of the cooling pipe 5 is fixedly connected to a steam inlet 6 for introducing high-temperature saturated / superheated steam generated during the corrosion and scale inhibitor production process. The other end of the cooling pipe 5 is fixedly connected to an outlet 7 for discharging the condensed fluid (mainly condensate, possibly containing a small amount of uncondensed gas).

[0057] Condensate collection system: A bottom trough 8 is fixedly connected to the bottom of the condensate chamber 1. The internal space of the bottom trough 8 is connected to the interior of the condensate chamber 1. The key design feature is that the bottom surface of the bottom trough 8 is machined with a certain inclination angle (such as inclination towards the drain pipe 9). This inclination ensures that the condensate can flow naturally to the preset position.

[0058] At the lowest end of the sloping bottom surface of the bottom tank 8, several drain pipes 9 are fixedly connected. The drain pipes 9 are used to discharge the collected condensate to an external recycling system (such as a storage tank or a subsequent treatment unit).

[0059] Innovative Surface Treatment - Hydrophobic Coating: One of the core innovations: A stable and durable hydrophobic coating 10 is applied to the outer surfaces of all fins 4 (i.e., the surfaces in contact with air) within the condensation chamber 1, as well as the outer wall surfaces of all cooling pipes 5 (i.e., the surfaces exposed to air for heat exchange). Preferably, this hydrophobic coating 10 is a titanium dioxide nano-coating. This coating can be applied using mature surface treatment techniques such as sol-gel method, post-spray curing, etc.

[0060] Core design of the device: Uniform and efficient condensation effect: The forced ventilation (fan 3) combined with the dense, obtuse-angled copper fin array 4 and the multi-layer bent cooling pipe 5 interpenetrate with each other, provides a huge effective heat exchange area, and the airflow is evenly distributed after being guided by the fins 4, ensuring that the steam condensation effect is efficient and uniform.

[0061] Enhanced core heat exchange efficiency: The application of titanium dioxide nano-hydrophobic coating 10 is key to improving the performance of this device. It causes condensate to bead up and roll off quickly, greatly reducing the surface liquid film thermal resistance and significantly improving the heat transfer coefficient between the fins 4 and cooling pipes 5 and the cooling air, resulting in a substantial increase in overall condensation efficiency.

[0062] Targeted anti-scaling: The rapid condensate runoff feature is specifically designed to address the scaling risk caused by trace components carried by steam during the production of corrosion and scale inhibitors. It effectively slows down the scaling rate on heat exchange surfaces, reducing maintenance frequency and costs.

[0063] The working principle of this utility model is as follows:

[0064] Steam introduction and flow: The steam generated during the production of corrosion and scale inhibitors (usually at a high temperature and may contain trace components) enters the interior of the multi-layered, bent cooling pipe 5 through steam inlet 6.

[0065] Forced air cooling: Simultaneously, fan 3 starts. The motor of fan 3 drives the fan blades to rotate, forcefully drawing outside air into the condenser chamber 1. After entering the condenser chamber 1, the airflow flows at high speed through the channels formed by the cooling pipes 5 and the densely arranged fins 4 with obtuse angle bends.

[0066] High-efficiency condensation heat transfer: The heat of the steam flowing inside the cooling tube 5 is conducted to the external fins 4 and the surface of the tube wall through the tube wall of the cooling tube 5. The high-speed flowing air undergoes intense convective heat transfer with the fins 4 and the surface of the cooling tube 5, rapidly carrying away the heat.

[0067] Steam phase change condensation: The steam in cooling pipe 5 undergoes a phase change (condensation) as its heat is carried away by the forced airflow, changing from a gaseous state to a liquid water state.

[0068] Condensate collection:

[0069] The condensate droplets formed on the heat exchange surfaces (fins 4, cooling pipes 5) in the air inside the condensation chamber 1, as well as the condensate dripping from the outlet 7 of the cooling pipes 5, all drip downwards.

[0070] The condensate drips onto the inclined bottom surface of the bottom tank 8.

[0071] Rapid drainage and scale prevention (core function of the coating):

[0072] Key point: The hydrophobic coating 10 plays a crucial role. Because the hydrophobic (especially nano) coating greatly reduces its contact surface energy, condensate cannot spread on the surface of fin 4 and the outer wall of cooling pipe 5 to form a continuous water film with high thermal resistance. Instead, condensate easily forms beads (significantly increasing the contact angle).

[0073] Roll-off effect: Due to their own weight and the propulsion of airflow, these larger bead-like water droplets can quickly coalesce and roll off the surfaces of fins 4 and cooling pipes 5, greatly reducing the residence time of water droplets on the heat exchange surface.

[0074] Efficiency Improvement: This greatly reduces the area and thickness of the water film, significantly lowers the liquid film thermal resistance, and allows the metal surface to have more direct contact with the cold air, thereby greatly improving heat exchange efficiency.

[0075] Anti-scaling properties (for corrosion and scale inhibitors): Rapid condensate runoff greatly reduces the chance of trace substances that may exist in the production process of corrosion and scale inhibitors remaining, concentrating, and crystallizing on the heat exchange surface due to water evaporation. This effectively reduces the risk of scale formation on the surfaces of fins 4 and cooling pipes 5, ensuring long-term, efficient, and stable operation of the equipment.

[0076] Condensate discharge: Condensate dripping and collecting on the inclined bottom surface of the bottom tank 8 flows to the lowest end of the bottom tank 8 by gravity and is smoothly discharged outside the device through the drain pipe 9. The discharged condensate can be collected for heat recovery (such as preheating raw water) or other process steps.

[0077] Outlet discharge: After sufficient condensation, the remaining condensate and any trace amounts of non-condensable gases in the cooling pipe 5 are finally discharged from the outlet 7.

[0078] Compared with the prior art, the present invention has the following advantages:

[0079] The condensation device for producing corrosion and scale inhibitors has condensation chamber 1 filled with arrayed fins 4. When the fan 3 is working, air enters the condensation chamber 1 evenly through the fins 4, and exchanges heat with the fins 4 and cooling pipes 5 evenly and comprehensively, resulting in uniform steam condensation. At the same time, the design of the fins 4 greatly increases the condensation heat exchange area of ​​the cooling pipes 5, resulting in good condensation effect.

[0080] A stable hydrophobic or superhydrophobic nano-coating is applied to the surfaces of all fins 4 and the outer walls (air-contact surfaces) of the cooling pipes 5 within the chamber. The purpose is to allow condensate to quickly coalesce into beads and roll off. Reduced surface tension facilitates bead formation and effectively reduces the formation of a viscous water film on the condensation surface, significantly improving heat transfer efficiency. Rapid drainage reduces condensate retention time, lowering the risk of scale formation and crystallization on the surfaces of the fins 4 and cooling pipes 5.

Claims

1. A condensing device for the production of corrosion and scale inhibitors, characterized in that, Includes a condenser (1) and a cover (2). The front of the condenser (1) is fixedly connected to the cover (2). The condenser (1) has a hollow structure. A fan (3) is fixedly connected inside the cover (2). The air inlet of the fan (3) is connected to the condenser (1). The inner side of the condensation chamber (1) is fixedly connected with several fins (4), and the fins (4) are multi-bent. The fins (4) are oriented in the same direction as the airflow. Cooling pipes (5) are threaded through the wall of the condensation chamber (1). The cooling pipes (5) are multi-layered and bent. The cooling pipe (5) is connected to the fin (4), and one end of the cooling pipe (5) is fixedly connected to a steam inlet (6), and the other end of the cooling pipe (5) is fixedly connected to an outlet (7). The bottom of the condensation chamber (1) is fixedly connected to a bottom groove (8), the bottom surface of the bottom groove (8) is inclined, and a number of drain pipes (9) are fixedly connected to the bottom end of the bottom groove (8). The outer surface of the cooling pipe (5) and the fins (4) is covered with a hydrophobic coating (10).

2. The condensing device for corrosion and scale inhibitor production of claim 1, characterized in that: The condensation chamber (1) is made of aluminum alloy and is connected to the cover (2) by screws.

3. The condensing device for corrosion and scale inhibitor production of claim 2, characterized in that: The fan (3) includes a motor and fan blades, wherein the output end of the motor is fixedly connected to the fan blades.

4. The condensation device for producing corrosion and scale inhibitors as described in claim 3, characterized in that: The fins (4) are made of copper and are welded to the inner wall of the condensation chamber (1).

5. The condensation device for producing corrosion and scale inhibitors as described in claim 4, characterized in that: The bending angle of the fin (4) is obtuse, the bending point of the cooling pipe (5) is U-shaped, and the bending point of the cooling pipe (5) is located outside the condensation chamber (1).

6. The condensation device for producing corrosion and scale inhibitors as described in claim 5, characterized in that: The bottom groove (8) is connected to the interior of the condensation chamber (1), and the hydrophobic coating (10) is specifically a titanium dioxide nano-coating.

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