Device for automatically analyzing and measuring contents of methane and acetylene in carbon dioxide gas

Abstract

The utility model discloses a device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas, which comprises a carbon dioxide adsorption cylinder, an alkali liquor tank, an alkali pump, an alkali liquor measuring cylinder and a display controller, a valve I, a valve II and a valve III are respectively arranged on conveying pipelines which are connected in pairs in the carbon dioxide adsorption cylinder, the alkali liquor tank and the alkali pump; the conveying pipeline between the carbon dioxide adsorption cylinder and the alkali pump is communicated with the alkali liquor measuring cylinder through a branch pipeline, the third valve is located on the communicating pipeline between the alkali liquor measuring cylinder and the carbon dioxide adsorption cylinder, and a fourth valve is arranged on the communicating pipeline between the alkali liquor measuring cylinder and the alkali pump. The device for automatically analyzing and measuring the content of methane and acetylene in the carbon dioxide gas has the characteristics of high online analysis speed, high efficiency, high reliability, simplicity in operation, high automation degree, capability of saving a large amount of manpower and reagent dosage and the like, can realize continuous analysis and computerization of data processing, and is suitable for large-scale popularization and application. And errors caused by human factors are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of gas analysis and detection equipment, in particular to a device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas. Background Art

[0002] The current method for measuring methane and acetylene content in carbon dioxide gas is manual sampling followed by laboratory analysis. This is time-consuming and results in delayed data. It is labor-intensive and even difficult to implement when analyzing large amounts of data. Therefore, achieving rapid and accurate measurement of methane and acetylene content in carbon dioxide gas is a pressing technical challenge for those skilled in the art. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a device for automatically analyzing and measuring the methane and acetylene contents in carbon dioxide gas.

[0004] The technical solutions provided by this utility model are as follows:

[0005] A device for automatically analyzing and measuring the methane and acetylene content in carbon dioxide gas comprises a carbon dioxide adsorption cylinder, an alkali solution tank, an alkali pump, an alkali solution measuring cylinder, and a display controller. The carbon dioxide adsorption cylinder, alkali solution tank, and alkali pump are sequentially connected through a delivery pipeline to form a closed circulation pipeline. Valves 1, 2, and 3 are respectively provided on the delivery pipelines connecting the carbon dioxide adsorption cylinder, the alkali solution tank, and the alkali pump in pairs. The delivery pipeline between the carbon dioxide adsorption cylinder and the alkali pump is connected to the alkali solution measuring cylinder via a branch pipeline. Valve 3 is located on the connecting pipeline between the alkali solution measuring cylinder and the carbon dioxide adsorption cylinder. Valve 4 is provided on the connecting pipeline between the alkali solution measuring cylinder and the alkali pump.

[0006] Preferably, the volume of the carbon dioxide adsorption cylinder is fixed at 100 ml.

[0007] Preferably, the carbon dioxide adsorption cylinder is composed of a two-section structure with upper and lower diameters of unequal magnitude, and both the two-section structure with upper and lower diameters of unequal magnitude are marked with volume scales.

[0008] Preferably, the diameter of the upper section structure of the carbon dioxide adsorption cylinder is smaller than the diameter of the lower section structure.

[0009] Preferably, the alkali solution measuring cylinder is provided with a volume scale.

[0010] Preferably, the alkali solution measuring cylinder is provided with a radar level gauge.

[0011] Preferably, a vent valve 1 is provided on the upper portion of the carbon dioxide adsorption cylinder.

[0012] Preferably, a second vent valve is provided on the upper portion of the alkali solution measuring cylinder.

[0013] Preferably, a valve for replacing alkali solution is provided at the lower part of the alkali solution tank.

[0014] Preferably, a control valve is provided between the carbon dioxide adsorption cylinder and the carbon dioxide incoming gas delivery pipeline.

[0015] The utility model has the following advantages over the prior art:

[0016] The utility model discloses an automatic analysis and measurement device for the content of methane and acetylene in carbon dioxide gas, which can realize accurate and rapid measurement of the content of methane and acetylene in carbon dioxide gas by arranging a carbon dioxide adsorption cylinder, an alkali solution tank, an alkali pump, an alkali solution measuring cylinder and a display controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Schematic diagram of the structure of the device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas in an embodiment of the present utility model;

[0019] Figure 2 This is a structural diagram of a carbon dioxide adsorption cylinder in an embodiment of the present utility model;

[0020] Figure 3 It is a structural schematic diagram of the alkali liquid measuring cylinder in the embodiment of the present utility model.

[0021] Reference numerals:

[0022] 1. Carbon dioxide adsorption cylinder; 2. Alkali solution tank; 3. Alkali pump; 4. Alkali solution measuring cylinder; 5. Radar level gauge; 6. Display controller; 7. Valve 1; 8. Valve 2; 9. Valve 3; 10. Valve 4; 11. Vent valve 1; 12. Vent valve 2; 13. Replace alkali solution valve; 14. Control valve. DETAILED DESCRIPTION

[0023] In order to help those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] like Figure 1-3 As shown, an embodiment of the utility model provides a device for automatically analyzing and measuring the methane and acetylene content in carbon dioxide gas, comprising a carbon dioxide adsorption cylinder 1, an alkali liquid tank 2, an alkali pump 3, an alkali liquid measuring cylinder 4 and a display controller 6. The display controller 6 can operate continuously and automatically for a long time with high reliability and can implement closed-loop control, which significantly improves the analysis operation. The carbon dioxide adsorption cylinder 1, the alkali liquid tank 2 and the alkali pump 3 are sequentially connected through a delivery pipe to form a closed circulation pipeline. A valve 1 7, a valve 2 8 and a valve 3 9 are respectively provided on the delivery pipes connected in pairs among the carbon dioxide adsorption cylinder 1, the alkali liquid tank 2 and the alkali pump 3; the delivery pipe between the carbon dioxide adsorption cylinder 1 and the alkali pump 3 is connected to the alkali liquid measuring cylinder 4 through a branch pipe, the valve 3 9 is on the connecting pipe between the alkali liquid measuring cylinder 4 and the carbon dioxide adsorption cylinder 1, and a valve 4 10 is provided on the connecting pipe between the alkali liquid measuring cylinder 4 and the alkali pump 3.

[0025] In this embodiment, the volume of the carbon dioxide adsorption cylinder 1 is fixed at 100 ml for easy measurement. The carbon dioxide adsorption cylinder 1 consists of a two-section structure with unequal upper and lower diameters, both of which are marked with volume scales. The diameter of the upper section of the carbon dioxide adsorption cylinder 1 is smaller than that of the lower section, enabling more accurate measurement of even small changes in volume. During each measurement, the volume of carbon dioxide absorbed by the alkali solution, i.e., the volume of alkali solution entering the carbon dioxide adsorption cylinder 1 (100 ml), can be read from the scale marked on the carbon dioxide adsorption cylinder 1 (100 ml). This reading is consistent with the volume of alkali solution consumed automatically calculated by the display controller 6. The volume scale marked on the carbon dioxide adsorption cylinder 1 (100 ml) allows for comparison with the result automatically calculated by the display controller 6, and can also be used for direct manual measurement. A vent valve 11 is provided at the top of the carbon dioxide adsorption cylinder 1.

[0026] In this embodiment, the alkali liquid graduated cylinder 4 is provided with a volume scale. The alkali liquid graduated cylinder 4 can also be composed of a two-stage structure with unequal upper and lower diameters, and both of the two-stage structures with unequal upper and lower diameters are marked with volume scales. The diameter of the upper section of the alkali liquid graduated cylinder 4 is smaller than the diameter of the lower section, which can more accurately measure slight changes in volume. The alkali liquid graduated cylinder 4 can also automatically calculate the consumed alkali liquid volume with the display controller 6 for comparison, and can also be used for manual direct measurement. The alkali liquid graduated cylinder 4 is provided with a radar level gauge 5. The upper portion of the alkali liquid graduated cylinder 4 is provided with a drain valve 12. The lower portion of the alkali liquid tank 2 is provided with a alkali liquid replacement valve 13.

[0027] In this embodiment, a control valve 14 is provided between the carbon dioxide adsorption cylinder 1 and the carbon dioxide incoming gas delivery pipeline.

[0028] In this embodiment, when it is necessary to analyze and measure the methane and ethylene contents in the carbon dioxide gas, the analysis and measurement program in the display controller 6 is started, and the controller will send a signal: (1) first open the air valve 11, then gradually open the control valve 14, and after the carbon dioxide gas to be analyzed and measured is introduced, the control valve 14 and the air valve 11 are closed; (2) open the valve 2 8, start the alkali pump 3, open the air valve 2 12, and gradually open the valve 4 10 to send the alkali solution into the alkali solution measuring cylinder 4. After reaching the control liquid level, close the valve 4 10, stop the alkali pump 2, and close the valve 2 8; (3) after the radar level meter 5 measures and records the initial reading of the liquid level in the alkali solution measuring cylinder 4, gradually open the valve 3 9, and under the action of the height difference, the alkali solution flows into the alkali solution measuring cylinder 4. In the carbon dioxide adsorption cylinder 1, when the liquid level in the alkali solution measuring cylinder 4 does not drop, the radar level meter 5 measures and records the final reading of the liquid level in the alkali solution measuring cylinder 4; (4) Based on the difference between the initial and final readings measured and recorded by the radar level meter 10 and the diameter of the alkali solution measuring cylinder 4, the volume of the consumed alkali solution is calculated. This volume is also the volume of carbon dioxide in 100 ml of the carbon dioxide adsorption cylinder 1. Therefore, it is easy to calculate and display the methane and ethylene contents. The entire process is automatically calculated in the display controller 6; the calculation method is: ① the height of the alkali solution drop, hconsumption=hinitial-hend; ② if the height of the alkali solution drop is less than or equal to the height of the upper end of the alkali solution measuring cylinder 4, that is, hconsumption≦h1, then the volume of the consumed alkali solution, Vconsumption= *h 消耗 If the alkali solution drops to a height greater than the upper end height of the alkali solution measuring cylinder 4, that is, h consumption>h1, then the volume of alkali solution consumed, V consumption = *h1+ *(h 消耗 -h1); ③ the content of methane and ethylene in carbon dioxide gas, C 甲烷、乙烯 =V 消耗 / 100*100%; (5) Open the drain valve 11 and valve 7 to drain the alkali solution that has absorbed carbon dioxide into the alkali solution tank 2 for recycling until the alkali solution is completely reacted and can no longer absorb carbon dioxide. Then, replace the alkali solution with new alkali solution by replacing the alkali solution valve 13; (6) If multiple sets of data need to be analyzed and measured, repeat steps (1) to (3).

[0029] In this embodiment, the volume scale of the carbon dioxide adsorption cylinder 1 (100 ml) is marked, the volume scale of the alkali solution measuring cylinder 4 is marked, and the display controller 6 automatically calculates. Each time a measurement is made, the volume of the alkali solution flowing in can be seen from the volume scale marked on the carbon dioxide adsorption cylinder 1 (100 ml), the volume of the alkali solution flowing out can be seen from the volume scale marked on the alkali solution measuring cylinder 4, and the display controller 6 automatically calculates the volume of the alkali solution reduced. The alkali solution volumes obtained by the three different devices should be equal, so as to avoid inaccurate measurement results caused by an abnormality in one device.

[0030] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas, characterized in that: The invention comprises a carbon dioxide adsorption cylinder (1), an alkali solution tank (2), an alkali pump (3), an alkali solution measuring cylinder (4) and a display controller (6); the carbon dioxide adsorption cylinder (1), the alkali solution tank (2) and the alkali pump (3) are sequentially connected through a delivery pipe to form a closed circulation pipeline; a valve 1 (7), a valve 2 (8) and a valve 3 (9) are respectively provided on the delivery pipes connected in pairs among the carbon dioxide adsorption cylinder (1), the alkali solution tank (2) and the alkali pump (3); the delivery pipe between the carbon dioxide adsorption cylinder (1) and the alkali solution tank (2) and the alkali solution measuring cylinder (4) is connected through a branch pipe; the valve 3 (9) is located on the connecting pipe between the alkali solution measuring cylinder (4) and the carbon dioxide adsorption cylinder (1); and a valve 4 (10) is provided on the connecting pipe between the alkali solution measuring cylinder (4) and the alkali pump (3).

2. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to claim 1, characterized in that: The volume of the carbon dioxide adsorption cylinder (1) is fixed at 100 ml.

3. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to claim 1, characterized in that: The carbon dioxide adsorption cylinder (1) is composed of a two-section structure with upper and lower diameters of different sizes, and both the two-section structures with upper and lower diameters of different sizes are marked with volume scales.

4. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to claim 3, characterized in that: The diameter of the upper section structure of the carbon dioxide adsorption cylinder (1) is smaller than the diameter of the lower section structure.

5. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to any one of claims 1 to 4, characterized in that: The alkali solution measuring cylinder (4) is provided with a volume scale.

6. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to claim 5, characterized in that: The alkali solution measuring cylinder (4) is provided with a radar level gauge.

7. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to any one of claims 1 to 4, characterized in that: A vent valve (11) is provided on the upper portion of the carbon dioxide adsorption cylinder (1).

8. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to any one of claims 1 to 4, characterized in that: The upper portion of the alkali solution measuring cylinder (4) is provided with a second vent valve (12).

9. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to any one of claims 1 to 4, characterized in that: A lye replacement valve (13) is provided at the lower portion of the lye tank (2).

10. The device for automatically analyzing and measuring the content of methane and acetylene in carbon dioxide gas according to any one of claims 1 to 4, characterized in that: A control valve (14) is provided between the carbon dioxide adsorption cylinder (1) and the carbon dioxide incoming gas delivery pipeline.

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