Tail gas absorption device for chemical distillation experiment
By designing a tail gas absorption device that uses activated carbon plates and atomizing nozzles to spray absorbent liquid, the problem of untreated tail gas from chemical distillation experiments was solved, achieving tail gas purification and environmental protection.
Patent Information
- Application Number
- CN202520532342.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The exhaust gas from chemical distillation experiments is emitted directly without effective treatment, leading to environmental pollution and health hazards to laboratory personnel.
Design an exhaust gas absorption device that initially absorbs volatile organic compounds in exhaust gas through activated carbon plates, sprays absorbent liquid using a pump body atomizing nozzles, and increases the contact area through a packing layer to achieve full absorption and purification of exhaust gas.
It effectively absorbs volatile organic compounds in exhaust gases, protecting the health of laboratory personnel and reducing environmental pollution.
Smart Images
Figure CN223931040U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of absorption device technology, specifically to a tail gas absorption device for chemical distillation experiments. Background Technology
[0002] Chemical distillation is a technique that separates components in a liquid mixture based on their boiling point differences. The experimental setup includes a distillation flask, condenser, and receiver. The lower-boiling-point components are vaporized by heating and then collected as the distillate after condensation. This experiment is commonly used to purify solvents or separate mixtures. The exhaust gases from chemical distillation experiments mainly include operational exhaust gases, instrument exhaust gases, and ventilation system exhaust gases. For example, when distilling organic compounds such as petroleum ether, the exhaust gases from the ventilation system in chemical distillation experiments are primarily organic vapors. If these exhaust gases are released directly into the atmosphere without effective treatment, they will not only pollute the environment but may also harm the health of laboratory personnel. Therefore, a tail gas absorption device for chemical distillation experiments is proposed. Utility Model Content
[0003] The purpose of this invention is to provide a tail gas absorption device for chemical distillation experiments to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a tail gas absorption device for chemical distillation experiments, comprising an absorption chamber and an absorption liquid tank. A connecting pipe is connected to the lower left side wall of the absorption chamber, and a housing is connected to the left end of the connecting pipe. An air inlet pipe is connected to the left side wall of the housing, and the housing is connected to the exhaust pipe of the laboratory's ventilation system via the air inlet pipe. Multiple activated carbon plates are installed inside the housing. A pump is installed on the upper surface of the absorption liquid tank. A suction pipe is installed at one end of the pump's inlet, and the bottom end of the suction pipe extends into the absorption liquid tank and is close to its inner bottom wall. An inlet pipe is installed at one end of the pump's outlet, and one end of the inlet pipe extends into the absorption chamber and is connected to a delivery pipe. Spray pipes are uniformly connected to the outer side wall of the delivery pipe, and atomizing nozzles are uniformly installed on the lower surface of the spray pipes. A packing layer is provided on the upper part of the inner side wall of the absorption chamber, and the packing layer is located below the atomizing nozzles. An air outlet pipe is connected to the top of the right side wall of the absorption chamber.
[0005] As a further preferred embodiment of this technical solution: a fixing plate is fixedly connected to the rear surface of the absorption chamber, the bottom of the absorption liquid tank is fixedly connected to the upper surface of the fixing plate, a box cover is provided on the top of the box, two locking fasteners are symmetrically installed on the outer side wall of the box, two locking fasteners are symmetrically installed on the outer side wall of the box cover, and the box and the box cover are connected by the locking fasteners.
[0006] As a further preferred embodiment of this technical solution: multiple sets of limiting frames are uniformly and fixedly connected to the inner sidewall of the box, with two limiting frames in each set. The limiting frames are fixedly connected to the inner sidewall of the box, and the activated carbon plate is placed on the inner sidewall of the limiting frame.
[0007] As a further preferred embodiment of this technical solution: a handle is fixedly connected to the upper surface of the box lid.
[0008] As a further preferred embodiment of this technical solution, the right side wall of the absorption tank is provided with a viewing window.
[0009] As a further preferred embodiment of this technical solution: the upper surface of the absorption tank is connected to a liquid addition pipe, and a sealing cap is threadedly connected to the top of the outer side wall of the liquid addition pipe.
[0010] As a further preferred embodiment of this technical solution: the bottom of the right side wall of the absorption chamber is connected to an exhaust pipe, and a valve is installed on the outer side wall of the exhaust pipe.
[0011] As a further preferred embodiment of this technical solution: a switch button is installed on the rear surface of the absorption tank, and the electrical output terminal of the switch button is electrically connected to the electrical input terminal of the pump body through a wire.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention connects the chamber to the laboratory's ventilation system exhaust pipe via an air inlet pipe. After passing through the chamber, the exhaust gas enters the absorption chamber, where activated carbon plates initially absorb the volatile organic compounds (VOCs). The exhaust gas then rises within the absorption chamber, where a pump draws in the absorbent liquid and sprays it downwards through atomizing nozzles, evenly distributing the absorbent liquid throughout the chamber. This ensures thorough contact between the exhaust gas and the absorbent liquid, allowing for further absorption of VOCs. The packing layer increases the contact area and prolongs the contact time between the exhaust gas and the absorbent liquid, thereby improving the absorption effect. This achieves the absorption and purification of the exhaust gas, protecting the health of laboratory personnel and reducing environmental pollution. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the left-side structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the internal structure of the box in this utility model;
[0017] Figure 4 This is a schematic diagram of the internal structure of the absorption chamber in this utility model.
[0018] In the picture:
[0019] 1. Absorption chamber; 2. Connecting pipe; 3. Box body; 4. Air inlet pipe; 5. Activated carbon plate; 6. Liquid inlet pipe; 7. Delivery pipe; 8. Spray pipe; 9. Atomizing nozzle; 10. Packing layer; 11. Fixing plate; 12. Absorption liquid tank; 13. Pump body; 14. Liquid extraction pipe; 15. Air outlet pipe; 16. Box cover; 17. Lock; 18. Handle; 19. Limiting frame; 20. Viewing window; 21. Liquid filling pipe; 22. Sealing cap; 23. Drain pipe; 24. Valve; 25. Switch button. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the 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 are only used to explain this application, and should not be construed as limiting this application. 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.
[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0022] Please see Figure 1-4This utility model provides a technical solution: a tail gas absorption device for chemical distillation experiments, comprising an absorption chamber 1 and an absorption liquid tank 12. A connecting pipe 2 is connected to the lower left side wall of the absorption chamber 1, and a housing 3 is connected to the left end of the connecting pipe 2. An air inlet pipe 4 is connected to the left side wall of the housing 3. The housing 3 is connected to the exhaust pipe of the laboratory's ventilation system via the air inlet pipe 4. Multiple activated carbon plates 5 are installed inside the housing 3. A pump body 13 is installed on the upper surface of the absorption liquid tank 12, and a suction pipe 14 is installed at one end of the pump body 13's inlet. The bottom end of the pump body 13 extends into the absorbent tank 12 and is close to the inner bottom wall of the absorbent tank 12. One end of the pump body 13's outlet is equipped with an inlet pipe 6, one end of which extends into the absorbent chamber 1 and is connected to a delivery pipe 7. The outer wall of the delivery pipe 7 is evenly connected to spray pipes 8, and the lower surface of the spray pipes 8 is evenly equipped with atomizing nozzles 9. A packing layer 10 is provided on the upper part of the inner wall of the absorbent chamber 1, located below the atomizing nozzles 9. An air outlet pipe 15 is connected to the top of the right side wall of the absorbent chamber 1. The absorbent tank 12 contains absorbent liquid, and the pump body 13... The absorbent can be selected according to different chemical distillation experiments. For example, water or alkaline solutions can be used as absorbents for water-soluble organics (such as alcohols and ketones), while high-boiling-point, low-volatility oils (such as mineral oil and silicone oil) or specific organic solvents (such as DMSO) can be used as absorbents for non-water-soluble organics (such as benzene and toluene), utilizing the principle of "like dissolves like". The chamber 3 is connected to the laboratory's ventilation system exhaust pipe through the air inlet pipe 4. The exhaust gas enters the absorption chamber 1 after passing through the chamber 3, and the activated carbon plate 5 is used to absorb the exhaust gas. The volatile organic compounds in the exhaust gas are initially absorbed. Subsequently, the exhaust gas enters the absorption chamber 1 and rises within the chamber. The pump 13 draws in the absorbent liquid and sprays it downwards through the atomizing nozzle 9, evenly distributing the absorbent liquid throughout the chamber space. This ensures that the exhaust gas and absorbent liquid come into full contact, allowing the absorbent liquid to further absorb the volatile organic compounds in the exhaust gas. The packing layer 10 increases the contact area between the exhaust gas and the absorbent liquid, prolonging the contact time and thus improving the absorption effect. This achieves the absorption and purification of the exhaust gas, protecting the health of laboratory personnel and reducing environmental pollution.
[0023] In this embodiment, specifically: a fixing plate 11 is fixedly connected to the rear surface of the absorption chamber 1, the bottom of the absorption liquid tank 12 is fixedly connected to the upper surface of the fixing plate 11, a box cover 16 is provided on the top of the box body 3, two locking parts 17 are symmetrically installed on the outer side wall of the box body 3, and two locking parts 17 are symmetrically installed on the outer side wall of the box cover 16. The box body 3 and the box cover 16 are connected by the locking parts 17. The locking parts 17 can lock the box cover 16, and opening the locking parts 17 can remove the box cover 16 for easy replacement of the new activated carbon plate 5.
[0024] In this embodiment, specifically: multiple sets of limiting frames 19 are uniformly and fixedly connected to the inner side wall of the box 3, with two limiting frames 19 in each set. The limiting frames 19 are fixedly connected to the inner side wall of the box 3, and the activated carbon plate 5 is placed on the inner side wall of the limiting frame 19. The setting of the limiting frame 19 can prevent the activated carbon plate 5 from shifting.
[0025] In this embodiment, specifically: a handle 18 is fixedly connected to the upper surface of the box cover 16; to facilitate moving the box cover 16.
[0026] In this embodiment, specifically: a viewing window 20 is provided on the right side wall of the absorption tank 12; to facilitate observation of the liquid level in the absorption tank 12.
[0027] In this embodiment, specifically: the upper surface of the absorbent tank 12 is connected to a liquid addition pipe 21, and a sealing cap 22 is threadedly connected to the top of the outer side wall of the liquid addition pipe 21; when the liquid level of the absorbent is low, absorbent can be added along the liquid addition pipe 21, and tightening the sealing cap 22 can improve the sealing performance of the liquid addition pipe 21 and reduce the evaporation of the absorbent.
[0028] In this embodiment, specifically: the bottom of the right side wall of the absorption chamber 1 is connected to a drain pipe 23, and a valve 24 is installed on the outer side wall of the drain pipe 23; opening the valve 24 can drain the absorption liquid accumulated at the bottom of the absorption chamber 1.
[0029] In this embodiment, specifically: a switch button 25 is installed on the rear surface of the absorption liquid tank 12, and the electrical output terminal of the switch button 25 is electrically connected to the electrical input terminal of the pump body 13 through a wire; this facilitates control of the working state of the pump body 13.
[0030] The working principle of this utility model is as follows: the chamber 3 is connected to the exhaust pipe of the laboratory ventilation system through the air inlet pipe 4. After the exhaust gas passes through the chamber 3, it enters the absorption chamber 1. The activated carbon plate 5 absorbs the volatile organic compounds in the exhaust gas for the first time. Then the exhaust gas enters the absorption chamber 1 and rises in the chamber. The pump body 13 draws in the absorbent liquid and sprays it downward through the atomizing nozzle 9, so that the absorbent liquid is evenly sprayed in the space inside the chamber, so that the exhaust gas and the absorbent liquid can fully contact each other. The absorbent liquid absorbs the volatile organic compounds in the exhaust gas again. The packing layer 10 can increase the contact area between the exhaust gas and the absorbent liquid and prolong the contact time, thereby improving the absorption effect, realizing the absorption and purification of exhaust gas, protecting the health of laboratory personnel, and reducing pollution to the environment.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A tail gas absorption device for chemical distillation experiments, characterized in that: The apparatus includes an absorption chamber (1) and an absorption liquid tank (12). The lower left side wall of the absorption chamber (1) is connected to a connecting pipe (2), and the left end of the connecting pipe (2) is connected to a box body (3). The left side wall of the box body (3) is connected to an air inlet pipe (4). The box body (3) is connected to the exhaust pipe of the laboratory ventilation system through the air inlet pipe (4). The box body (3) is equipped with multiple activated carbon plates (5) inside. A pump body (13) is installed on the upper surface of the absorption liquid tank (12). A suction pipe (14) is installed at one end of the inlet of the pump body (13). The bottom end of the suction pipe (14) extends into the absorption liquid. Inside the tank (12) and near the bottom wall of the absorbent tank (12), the outlet of the pump body (13) is equipped with an inlet pipe (6), one end of the inlet pipe (6) extends into the absorbent chamber (1) and is connected to a delivery pipe (7), the outer wall of the delivery pipe (7) is uniformly connected to a spray pipe (8), the lower surface of the spray pipe (8) is uniformly equipped with an atomizing nozzle (9), the upper part of the inner side wall of the absorbent chamber (1) is provided with a packing layer (10), the packing layer (10) is located below the atomizing nozzle (9), and the top of the right side wall of the absorbent chamber (1) is connected to an air outlet pipe (15).
2. The tail gas absorption device for chemical distillation experiments according to claim 1, characterized in that: A fixing plate (11) is fixedly connected to the rear surface of the absorption chamber (1), and the bottom of the absorption liquid tank (12) is fixedly connected to the upper surface of the fixing plate (11). A box cover (16) is provided on the top of the box body (3). Two locking parts (17) are symmetrically installed on the outer side wall of the box body (3), and two locking parts (17) are symmetrically installed on the outer side wall of the box cover (16). The box body (3) and the box cover (16) are connected through the locking parts (17).
3. The tail gas absorption device for chemical distillation experiments according to claim 2, characterized in that: The inner sidewall of the box (3) is uniformly and fixedly connected with multiple sets of limiting frames (19), each set of limiting frames (19) consists of two, the limiting frames (19) are fixedly connected to the inner sidewall of the box (3), and the activated carbon plate (5) is placed on the inner sidewall of the limiting frame (19).
4. The tail gas absorption device for chemical distillation experiments according to claim 3, characterized in that: A handle (18) is fixedly connected to the upper surface of the box lid (16).
5. The tail gas absorption device for chemical distillation experiments according to claim 4, characterized in that: The right side wall of the absorption tank (12) is provided with a viewing window (20).
6. The tail gas absorption device for chemical distillation experiments according to claim 5, characterized in that: The upper surface of the absorption tank (12) is connected to a liquid addition pipe (21), and a sealing cap (22) is threadedly connected to the top of the outer side wall of the liquid addition pipe (21).
7. The tail gas absorption device for chemical distillation experiments according to claim 6, characterized in that: The bottom of the right side wall of the absorption chamber (1) is connected to an exhaust pipe (23), and a valve (24) is installed on the outer side wall of the exhaust pipe (23).
8. The tail gas absorption device for chemical distillation experiments according to claim 7, characterized in that: A switch button (25) is installed on the rear surface of the absorption tank (12), and the electrical output terminal of the switch button (25) is electrically connected to the electrical input terminal of the pump body (13) through a wire.