An acidulated oil and fatty acid production tail gas condenser

Abstract

The utility model relates to tail gas condensation technical field, especially in an acidified oil and fatty acid production tail gas condenser, including processing box, the bottom side of processing box is provided with the air inlet pipe, the top of processing box is provided with the air outlet pipe, the inside middle part of processing box is provided with multiple condensing components of horizontal equal interval, and condensing component includes the condensing pipe of snake shape in the processing box box, the liquid inlet branch pipe is connected to the liquid inlet end of condensing pipe, multiple liquid inlet branch pipes are connected on the liquid inlet main pipe in common, the liquid outlet branch pipe is connected to the liquid outlet end of condensing pipe, multiple liquid outlet branch pipes are connected on the liquid outlet main pipe in common, the top of condensing component is equipped with polypropylene corrugated board, the top of polypropylene corrugated board is equipped with stainless steel wire net, and the inside middle part of processing box is provided with multiple flow baffles from top to bottom staggeredly, the utility model effectively reduces high temperature tail gas temperature, avoids the absorption liquid in subsequent treatment because of high temperature and appears moisture volatilization, concentration is not stable and the nozzle blockage, and promotes subsequent peculiar smell removal rate.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas condensation technology, and more specifically to an exhaust gas condenser for the production of acidified oil and fatty acids. Background Technology

[0002] In the industrial production of acidified oil and fatty acids, processes such as raw material pretreatment, acidification reaction, and distillation purification generate a large amount of exhaust gas. This exhaust gas mainly contains volatile organic acids (such as formic acid and acetic acid), small molecule aldehydes and ketones, sulfides, and unreacted light oils. It not only has a strong pungent odor, but also leads to the deterioration of workshop air quality. Long-term emissions can corrode equipment and endanger the health of operators. At the same time, it is necessary to meet the environmental protection regulations on the limit requirements for the emission of odorous pollutants.

[0003] Currently, the industry commonly uses alkaline spraying technology to treat the aforementioned exhaust gases. The principle is to neutralize the acidic components in the exhaust gas by spraying an alkaline absorbent liquid (such as sodium hydroxide solution), thereby removing some odorous substances. However, in practical applications, the following technical defects have been found in existing treatment devices:

[0004] The tail gas temperature generated by the acidification reaction and distillation process is usually 60-85℃. Under high temperature conditions, the volatile components in the tail gas have high molecular kinetic energy, which shortens the contact reaction time with the alkaline absorbent. At the same time, the high temperature will accelerate the evaporation of water in the absorbent. Although it may reduce the solution volume in the short term, the absorbent has already consumed alkaline agents in the neutralization reaction during circulation. Water evaporation will further disrupt the concentration stability. This may lead to an increase in the concentration of local ineffective salts (such as sodium salts of organic acids), causing nozzle blockage, and will also accelerate the relative consumption rate of effective alkaline agents, ultimately reducing the effective concentration of the absorbent and the odor removal rate. Utility Model Content

[0005] The purpose of this invention is to provide a condenser for the tail gas of acidified oil and fatty acid production, which reduces the temperature of the high-temperature tail gas, avoids water evaporation, unstable concentration and nozzle blockage of the absorbent liquid due to high temperature in subsequent treatment, and improves the subsequent odor removal rate.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A condenser for the tail gas from the production of acidified oil and fatty acids includes a treatment chamber. An inlet pipe is located on one side of the bottom of the treatment chamber, and an outlet pipe is located on the top of the treatment chamber. Multiple sets of condensing components are horizontally and evenly spaced along the inner side of the treatment chamber. Each condensing component includes a condensing tube arranged in a serpentine pattern within the treatment chamber. The liquid inlet end of the condensing tube is located at the top of the treatment chamber and connected to a liquid inlet branch pipe. Multiple liquid inlet branch pipes extend to the outside of the treatment chamber and are connected to a main liquid inlet pipe. The liquid outlet end of the condensing tube is located at the bottom of the treatment chamber and connected to a liquid outlet branch pipe. Multiple liquid outlet branch pipes extend to the outside of the treatment chamber and are connected to a main liquid outlet pipe. A polypropylene corrugated plate is located above the condensing components, and a stainless steel wire mesh is located above the polypropylene corrugated plate. Multiple baffles are staggered from top to bottom along the inner side of the treatment chamber. A U-shaped drain pipe is located at the bottom of the treatment chamber, and a sealing liquid is placed inside the U-shaped drain pipe.

[0008] Furthermore, it also includes a cooling tower, wherein the liquid outlet pipe is connected to the liquid inlet end of the cooling tower, the liquid inlet pipe is connected to the liquid outlet end of the cooling tower, and a circulation pump and a filter are provided on the liquid inlet pipe.

[0009] Furthermore, multiple heat dissipation fins are provided on the outer wall of the condenser tube.

[0010] Furthermore, the upper surface of the baffle is inclined.

[0011] Furthermore, a first temperature sensor is provided on the inner side of the processing box near the air inlet pipe, and a second temperature sensor is provided on the inner side of the processing box near the air outlet pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This application utilizes multiple sets of condensing components with serpentine condenser tubes arranged at equal horizontal intervals. The serpentine structure extends the contact path between the coolant and the exhaust gas, expanding the heat exchange area and rapidly reducing the high-temperature exhaust gas to a suitable temperature for subsequent treatment. This solves the problems of short reaction time for volatile components in the exhaust gas and unstable absorbent concentration caused by high temperatures. Above the condensing components, a polypropylene corrugated plate and a stainless steel wire mesh are arranged sequentially to form a double-layer separation structure. This structure can intercept light oil droplets and water droplets generated during condensation at each stage, preventing droplets from being discharged with the exhaust gas, thus avoiding resource waste or affecting subsequent treatment and improving oil recovery efficiency. Multiple baffles are staggered inside the treatment chamber, forcing the exhaust gas to flow in a deflected direction, preventing airflow short-circuiting, extending the contact time between the exhaust gas and the condensing components, and promoting the adhesion and dripping of droplets on the surface of the baffles, thereby enhancing the condensation and separation effect. The U-shaped drain pipe at the bottom of the treatment chamber contains a sealing liquid. When the condensate (oil phase and water phase) is discharged, it can prevent outside air from entering or exhaust gas from leaking out of the chamber, ensuring stable airflow inside the chamber and preventing the spread of odors in the workshop. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] 1. Processing box; 2. Inlet pipe; 3. Outlet pipe; 4. Condenser pipe; 5. Liquid inlet branch pipe; 6. Liquid inlet main pipe; 7. Liquid outlet branch pipe; 8. Liquid outlet main pipe; 9. Polypropylene corrugated plate; 10. Stainless steel wire mesh; 11. Baffle plate; 12. U-shaped drain pipe; 13. Sealing fluid; 14. First temperature sensor; 15. Second temperature sensor. Detailed Implementation

[0016] like Figure 1 As shown, a condenser for the tail gas from the production of acidified oil and fatty acids includes a treatment chamber 1. An inlet pipe 2 is provided on one side of the bottom of the treatment chamber 1, and an outlet pipe 3 is provided on the top of the treatment chamber 1. Multiple sets of condensing components are horizontally and evenly spaced along the inner side of the treatment chamber 1. Each condensing component includes a condensing pipe 4 arranged in a serpentine pattern within the treatment chamber 1. The liquid inlet end of the condensing pipe 4 is located at the top of the treatment chamber 1 and connected to a liquid inlet branch pipe 5. Multiple liquid inlet branch pipes 5 extend to the outside of the treatment chamber 1 and are collectively connected to the main liquid inlet pipe. On pipe 6, the liquid outlet end of the condenser pipe 4 is located at the bottom of the treatment box 1 and is connected to a liquid outlet branch pipe 7. Multiple liquid outlet branch pipes 7 extend to the outside of the treatment box 1 and are connected to the main liquid outlet pipe 8. A polypropylene corrugated plate 9 is provided above the condenser assembly. A stainless steel wire mesh 10 is provided above the polypropylene corrugated plate 9. Multiple baffles 11 are staggered from top to bottom in the middle of the inner side of the treatment box 1. A U-shaped drain pipe 12 is provided at the bottom of the treatment box 1. A sealing liquid 13 is provided inside the U-shaped drain pipe 12.

[0017] It also includes a cooling tower, with the liquid outlet pipe 8 connected to the liquid inlet end of the cooling tower and the liquid inlet pipe 6 connected to the liquid outlet end of the cooling tower. The liquid inlet pipe 6 is equipped with a circulation pump and a filter. The cooling tower realizes the circulation and cooling of the coolant to ensure condensation efficiency. The circulation pump provides power for the flow of coolant and avoids liquid accumulation in the condenser tube. The filter intercepts impurities in the coolant, prevents the condenser tube from being blocked, and extends the service life of the device.

[0018] Multiple heat dissipation fins are provided on the outer wall of the condenser tube 4; this increases the contact area between the condenser tube 4 and the exhaust gas, improves the heat exchange efficiency, and shortens the exhaust gas cooling time.

[0019] The upper surface of the baffle plate 11 is inclined.

[0020] A first temperature sensor 14 is installed on the inner side of the treatment box 1 near the air inlet pipe 2, and a second temperature sensor 15 is installed on the inner side of the treatment box 1 near the air outlet pipe 3. The temperature of the exhaust gas entering and exiting the treatment box 1 is monitored in real time, and the coolant parameters in the condenser pipe 4 can be adjusted in a timely manner to ensure stable condensation effect and prevent high-temperature exhaust gas from entering subsequent processes.

[0021] Working principle:

[0022] The cooling tower and circulating pump are started, allowing the coolant to enter each group of serpentine condenser tubes 4 through the inlet main pipe 6 and inlet branch pipe 5, and then return to the cooling tower through the outlet branch pipe 7 and outlet main pipe 8, forming a closed-loop circulation; sealing fluid 13 is injected into the U-shaped drain pipe 12 to ensure the liquid seal effect; the high-temperature exhaust gas generated in the acidified oil production process enters the bottom of the treatment tank 1 through the inlet pipe 2, and flows upward along the deflection path under the guidance of the staggered baffle 11; during the flow, the exhaust gas comes into full contact with the serpentine condenser tubes 4 with heat dissipation fins, the heat is absorbed by the coolant, and the temperature drops to a suitable range. Light oil and some moisture in the gas condense to form droplets; the exhaust gas carrying the droplets continues upward, first passing through the polypropylene corrugated plate 9, where larger droplets are impacted by inertial force and drip down; then passing through the stainless steel wire mesh 10, where small droplets are intercepted and aggregated into larger droplets before dripping down; the separated droplets slide down the inner wall or baffle of the treatment tank 1 to the bottom of the tank and are discharged from the U-shaped drain pipe 12, where the sealing liquid 13 maintains a liquid seal to prevent exhaust gas leakage; the exhaust gas after condensation and gas-liquid separation is discharged from the exhaust pipe 3 at the top of the treatment tank 1 and enters the subsequent waste gas treatment process.

[0023] This invention effectively reduces the temperature of high-temperature exhaust gas, preventing moisture evaporation, concentration instability, and nozzle blockage in the absorbent liquid during subsequent treatment due to high temperatures, thereby improving the subsequent odor removal rate. The double-layer gas-liquid separation enables the recovery of light oil, reducing resource waste and preventing oil from entering the subsequent treatment system and affecting efficiency. The baffle plate 11, in conjunction with the serpentine condenser tube 4, extends the exhaust gas treatment time and ensures uniform heat exchange. The U-shaped liquid seal and sealing design prevent exhaust gas leakage from causing the spread of odors in the workshop.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A condenser for tail gas from the production of acidified oil and fatty acids, characterized in that: The system includes a processing chamber (1), with an air inlet pipe (2) on one side of the bottom and an air outlet pipe (3) on the top. Multiple sets of condensing components are horizontally and evenly spaced along the inner side of the processing chamber (1). Each condensing component includes a condensing pipe (4) arranged in a serpentine pattern within the processing chamber (1). The liquid inlet end of the condensing pipe (4) is located at the top of the processing chamber (1) and connected to a liquid inlet branch pipe (5). Multiple liquid inlet branch pipes (5) extend to the outside of the processing chamber (1) and are connected to a main liquid inlet pipe (6). The condensing pipe (4)... The liquid outlet of the condenser assembly is located at the bottom of the treatment tank (1) and is connected to a liquid outlet branch pipe (7). Multiple liquid outlet branch pipes (7) extend to the outside of the treatment tank (1) and are connected to the main liquid outlet pipe (8). A polypropylene corrugated plate (9) is provided above the condenser assembly. A stainless steel wire mesh (10) is provided above the polypropylene corrugated plate (9). Multiple baffles (11) are staggered from top to bottom in the middle of the inner side of the treatment tank (1). A U-shaped drain pipe (12) is provided at the bottom of the treatment tank (1). A sealing liquid (13) is provided inside the U-shaped drain pipe (12).

2. The condenser for the tail gas from the production of acidified oil and fatty acids as described in claim 1, characterized in that: It also includes a cooling tower, the liquid outlet pipe (8) is connected to the liquid inlet end of the cooling tower, the liquid inlet pipe (6) is connected to the liquid outlet end of the cooling tower, and the liquid inlet pipe (6) is equipped with a circulation pump and a filter.

3. The condenser for the tail gas from the production of acidified oil and fatty acids as described in claim 1, characterized in that: The outer wall of the condenser tube (4) is provided with multiple heat dissipation fins.

4. The condenser for the tail gas from the production of acidified oil and fatty acids as described in claim 1, characterized in that: The upper surface of the baffle (11) is inclined.

5. The condenser for the tail gas from the production of acidified oil and fatty acids as described in claim 1, characterized in that: A first temperature sensor (14) is provided on the inner side of the processing box (1) near the air inlet pipe (2), and a second temperature sensor (15) is provided on the inner side of the processing box (1) near the air outlet pipe (3).

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