Tail gas purification device of an elemental analyzer
By using a stainless steel U-shaped tube filled with a silver-plated cobalt oxide absorption column in an elemental analyzer, combined with a temperature controller and heating wire system, the health hazards of direct exhaust gas emissions have been solved, achieving complete purification and safe emission of exhaust gas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIMAN INSTRUMENT (CHENYANG) CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-21
AI Technical Summary
Existing elemental analyzers directly emit exhaust gases, which endanger the health of laboratory staff. An effective purification device is needed.
It uses a stainless steel U-shaped tube as the absorption column, filled with materials such as silver-plated cobalt oxide, and combined with a temperature controller and heating wire system to absorb and purify harmful gases such as SO2 in the exhaust gas.
It achieves complete purification of exhaust gas, eliminates harm to the environment and human body, and ensures the safety of the laboratory.
Smart Images
Figure CN224524372U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of multi-channel detector technology for elemental analyzers, specifically to a tail gas purification device for elemental analyzers. Background Technology
[0002] An elemental analyzer is a precision instrument used to determine the content of carbon, hydrogen, nitrogen, sulfur, and oxygen in a substance. It is widely used in chemistry, materials science, environmental monitoring, pharmaceuticals, and geological exploration. Its core principle is to decompose the sample using physical or chemical methods, then use chromatographic techniques to detect characteristic elemental signals, thereby quantitatively analyzing the target components. These instruments play an irreplaceable role in quality control, new material development, and pollutant tracing, and are key analytical tools in scientific research and industry.
[0003] According to the test sample, the exhaust gas of the elemental analyzer contains trace amounts of SO2. Long-term emission can irritate the respiratory tract of laboratory staff and endanger their health. The exhaust gas produced by the existing elemental analyzers is directly emitted. The exhaust gas purification device uses chemical methods to purify the exhaust gas produced by the elemental analyzer and reduce the harm of potentially dangerous byproducts that may occur in the experiment. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a tail gas purification device for an elemental analyzer, which can fully purify the harmful gases in the tail gas generated by the elemental analyzer experiment.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a tail gas purification device for an elemental analyzer, comprising a connecting gas path, an absorption column, a temperature controller, a temperature sensor, a power supply line, an armored heating wire, and an insulation shell; the connecting gas path is used to collect the tail gas of the elemental analyzer and to discharge the purified gas; the absorption column is a stainless steel U-shaped tube with an outer diameter of 8mm and an inner diameter of 6mm, filled with silver-plated cobalt oxide, which can efficiently absorb sulfur dioxide in an environment of 80–120℃; the temperature controller is used to control the temperature of the absorption column; the temperature sensor is a K-type thermocouple used to monitor the temperature of the absorption column; the power supply line is AC35V used to power the heating wire and DC24V used to power the temperature controller; the armored heating wire is an internal nickel-chromium alloy with high resistivity, used to heat the absorption column; the insulation shell (7) can play a role in heat insulation.
[0006] Furthermore, the gas connection is a PTFE tube with an outer diameter of 3mm and an inner diameter of 2mm. It is connected to both ends of the absorption column via an 8mm to 3mm adapter and is used to collect the exhaust gas from the elemental analyzer and to discharge the purified gas.
[0007] Furthermore, the absorption column is a U-shaped tube made of 316 stainless steel with an outer diameter of 8mm and an inner diameter of 6mm, which is fixed to the heat insulation shell and filled with quartz wool, silver-plated cobalt oxide and copper oxide.
[0008] Furthermore, the temperature controller monitors the real-time temperature of the absorption column using a temperature sensor and controls the temperature of the heating wire.
[0009] Furthermore, the temperature sensor: one end of the probe is fixed to the armored heating wire, and the other end of the wire is connected to the temperature controller to measure the temperature of the absorption column in real time.
[0010] Furthermore, the power supply line is: AC35V connected to the armored heating wire, and DC24V connected to the temperature controller (3).
[0011] Furthermore, the armored heating wire: current passes through the heating wire to generate Joule heat, which is then conducted to the absorption column.
[0012] Furthermore, the outer shell is made of 316 stainless steel and has two through holes on the surface to fix the absorption column (2). The insulation cotton inside the shell plays a role in heat insulation.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The exhaust gas purification device of this elemental analyzer has the following advantages: 1. It absorbs harmful gases such as SO2 from the exhaust gas of the elemental analyzer, achieving zero pollution to the environment from the exhaust gas of the elemental analyzer.
[0014] 2. Because it absorbs gases such as SO2 in the exhaust gas that are irritating to the respiratory tract, it eliminates the health hazards of the elemental analyzer's exhaust gas to laboratory staff. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the outer shell of this utility model from a top view. In the diagram: 1. Connecting gas path; 2. Absorption column; 3. Temperature controller; 4. Temperature sensor; 5. Power supply line; 6. Armored heating wire; 7. Insulation shell; 8. 8mm to 3mm connector; 9. Through hole. Detailed Implementation
[0016] 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.
[0017] Please see Figure 1-2 This embodiment provides a technical solution: a tail gas purification device for an elemental analyzer, including a connecting gas path 1, an absorption column 2, a temperature controller 3, a temperature sensor 4, a power supply line 5, an armored heating wire 6, and a heat-insulating shell 7. Connecting gas path 1: One end of one of the connecting gas paths 1 is connected to the exhaust port of the elemental analyzer, and the other end is connected to the absorption column 2. The exhaust gas enters the absorption column through the connecting gas path 1. The harmful substances such as SO2 in the exhaust gas are treated by the packing material in the absorption column. The gas that comes out of the absorption column is harmless to the environment and human body and is then discharged through the other connecting gas path 1.
[0018] Absorption column 2: A U-shaped tube made of stainless steel, fixed on the heat-insulating shell, and filled with filler that can absorb harmful gases such as SO2 under certain temperature conditions.
[0019] Temperature controller 3: Monitors the real-time temperature of the absorption column through temperature sensor 4 and controls the heating wire to maintain the temperature.
[0020] Temperature sensor 4: K-type thermocouple, one end of the probe is fixed to the armored heating wire 6, and the other end of the wire is connected to the temperature controller 3 to measure the temperature of the absorption column in real time.
[0021] Power supply line 5: AC35V connected to armored heating wire 6, DC24V connected to temperature controller 3.
[0022] Armored heating wire 6: Current passes through the heating wire to generate Joule heat, which is then conducted to the absorption column 2, and the temperature is controlled in real time by the temperature controller 3.
[0023] The outer shell is a square box made of 316 stainless steel with two through holes on the surface to fix the absorption columns. The insulation cotton inside the shell plays a role in heat insulation.
[0024] The working principle of the exhaust gas purification device for an elemental analyzer provided by this utility model is as follows: the exhaust gas of the elemental analyzer is introduced into the absorption column 2 through the connecting gas passage 1. The temperature controller 3 controls the armored heating wire 6 to maintain a certain ambient temperature, so that the packing in the absorption column 2 can treat harmful gases such as SO2 in the exhaust gas. The exhaust gas is then discharged through the other end of the connecting gas passage 1.
[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A tail gas purification device for an elemental analyzer, characterized in that: It includes connecting gas path, absorption column, thermostat, temperature sensor, power supply line, armored heating wire and heat insulation shell; Connecting gas path (1): used to collect exhaust gas from the elemental analyzer and discharge purified gas; Absorption column (2): a stainless steel U-shaped tube with an outer diameter of 8mm and an inner diameter of 6mm, filled with silver-plated cobalt oxide, which can efficiently absorb sulfur dioxide in an environment of 80–120℃; Temperature controller (3): used to control the temperature of the absorption column; Temperature sensor (4): a K-type thermocouple used to monitor the temperature of the absorption column; Power supply line (5): AC35V used to power the heating wire, DC24V used to power the temperature controller; Armored heating wire (6): the internal heating wire is made of nickel-chromium alloy with high resistivity, used to heat the absorption column; Insulation shell (7): can play the role of heat insulation.
2. The exhaust gas purification device for an elemental analyzer according to claim 1, characterized in that: The connecting gas path (1) is a polytetrafluoroethylene tube with an outer diameter of 3mm and an inner diameter of 2mm. It is connected to both ends of the absorption column (2) through an 8mm to 3mm adapter (8) and is used to collect the exhaust gas of the elemental analyzer and discharge the purified gas.
3. The exhaust gas purification device for an elemental analyzer according to claim 1, characterized in that: The absorption column (2) is a U-shaped tube made of 316 stainless steel tube with an outer diameter of 8mm and an inner diameter of 6mm, which is fixed on the heat insulation shell and filled with quartz wool, silver-plated cobalt oxide and copper oxide.
4. The exhaust gas purification device for an elemental analyzer according to claim 1, characterized in that: The temperature controller (3) monitors the real-time temperature of the absorption column through the temperature sensor (4) and controls the temperature of the heating wire.
5. The exhaust gas purification device for an elemental analyzer according to claim 1, characterized in that: The temperature sensor (4) has one end of its probe fixed to the armored heating wire (6) and the other end of its wire connected to the temperature controller (3) to measure the temperature of the absorption column in real time.
6. The exhaust gas purification device for an elemental analyzer according to claim 1, characterized in that: The power supply line (5) is connected to the armored heating wire (6) with AC35V and to the temperature controller (3) with DC24V.
7. The exhaust gas purification device for an elemental analyzer according to claim 1, characterized in that: The armored heating wire (6): the current passes through the heating wire to generate Joule heat, which is finally conducted to the absorption column (2).
8. The exhaust gas purification device for an elemental analyzer according to claim 1, characterized in that: The heat-insulating outer shell (7) is made of 316 stainless steel and has two through holes on the surface to fix the absorption column (2). The heat-insulating cotton inside the shell plays a role in heat insulation.