Oxygen content measuring device for hydrogen chloride header pipe

Abstract

The utility model relates to the field of measuring devices, in particular to an oxygen content measuring device for a hydrogen chloride header pipe, which comprises a plurality of absorption bottles and a plurality of connecting pipes, the plurality of absorption bottles are mutually communicated by the plurality of connecting pipes, one absorption bottle is communicated with a gas inlet pipe, and the other absorption bottle is communicated with a gas outlet pipe. The other absorption bottle is communicated with an air outlet pipe, and the air outlet pipe is communicated with a sampling ball bladder. The gas chromatograph has the effects of improving the sample quantity obtained by the chromatograph, improving the accuracy of the analysis result of the chromatograph and improving the representativeness of the analysis result of the chromatograph.

Description

Technical Field

[0001] The utility model relates to the field of measuring devices, in particular to an oxygen content measuring device for a total hydrogen chloride pipeline. Background Art

[0002] During production operations, according to the requirements of production safety indicators, it is necessary to measure the oxygen content in hydrogen chloride gas.

[0003] Currently, for the analysis of the oxygen content in the total hydrogen chloride pipeline, a double-headed gas burette and a starch potassium iodide solution are usually used to measure the purity of hydrogen chloride. Subsequently, the remaining gas in the double-headed gas burette is injected into a chromatograph to analyze the oxygen content. However, the remaining gas volume in the double-headed gas burette is usually small (less than 10 mL) and the pressure is also small, and the oxygen content in the total hydrogen chloride pipeline is itself very low, which results in insufficient sample volume injected into the chromatograph, and thus the analysis results often lack representativeness. Summary of the Utility Model

[0004] In order to solve the problem that the insufficient sample volume injected into the chromatograph leads to the lack of representativeness of the analysis results, the utility model provides an oxygen content measuring device for a total hydrogen chloride pipeline.

[0005] The utility model provides an oxygen content measuring device for a total hydrogen chloride pipeline, adopting the following technical scheme:

[0006] An oxygen content measuring device for a total hydrogen chloride pipeline includes absorption bottles and connecting pipes. There are multiple absorption bottles, and multiple connecting pipes are provided. The multiple connecting pipes connect the multiple absorption bottles to each other. An inlet pipe is connected to one absorption bottle, and an outlet pipe is connected to another absorption bottle. A sampling rubber balloon is connected to the outlet pipe.

[0007] In a specific feasible embodiment, the sampling rubber balloon is a rubber balloon.

[0008] In a specific feasible embodiment, the multiple absorption bottles are successively filled with an alkali solution, pure water, and bromocresol green indicator.

[0009] In a specific feasible embodiment, the absorption bottle includes a bottle body and a cover body, and the connecting pipe penetrates through the cover body.

[0010] In a specific feasible embodiment, the sampling rubber balloon is detachably connected to the outlet pipe.

[0011] In a specific feasible embodiment, the volume of the absorption bottle is 3000 - 5000 mL.

[0012] In summary, the utility model includes at least one of the following beneficial technical effects:

[0013] 1. By introducing more hydrogen chloride gas into the intake pipe, after the hydrogen chloride is completely absorbed by the solution in the absorption flask, the remaining gas is collected by the sampling rubber balloon, and more oxygen can be collected, making the analysis results obtained by the chromatograph more accurate and representative.

[0014] 2. Due to its good ductility, the rubber balloon undergoes elastic deformation and expands after being inflated, and contracts and rebounds when introducing gas into the chromatograph, facilitating the complete discharge of the gas in the rubber balloon into the chromatograph, further improving the accuracy of the analysis results. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure.

[0016] Description of the reference numerals: 1. Absorption flask; 11. Flask body; 12. Cover body; 2. Connecting pipe; 3. Intake pipe; 4. Outlet pipe; 5. Sampling rubber balloon. Detailed Embodiments

[0017] The following further elaborates on the present utility model in conjunction with the attached Figure 1 drawings.

[0018] Refer to Figure 1 , the oxygen content measuring device for the hydrogen chloride main pipe includes an absorption flask 1 and a connecting pipe 2. There are 3 absorption flasks 1, and an alkali solution, pure water, and bromocresol green indicator are successively contained in the three absorption flasks 1. Among them, the bromocresol green indicator is prepared by dropping 10 drops of 1 g / L bromocresol green solution into pure water. The mixed gas output from the hydrogen chloride main pipe is first introduced into the alkali solution, so that the hydrogen chloride gas is absorbed by the alkali solution, and the pure water further absorbs the hydrogen chloride gas to ensure that the hydrogen chloride gas is completely absorbed. The bromocresol green indicator is used to verify that the hydrogen chloride gas is completely removed, ensuring that the hydrogen chloride gas in the gas output from the absorption flask 1 is completely absorbed.

[0019] Refer to Figure 1, the absorption bottle 1 includes a bottle body 11 and a cover body 12. The cover body 12 is a rubber stopper and is arranged inside the bottle mouth of the bottle body 11. A plurality of connecting pipes 2 penetrate through the cover body 12 to communicate adjacent bottle bodies 11 with each other. The volume of the bottle body 11 is 3000 - 5000 mL, which can store a sufficient amount of solution to fully react with the hydrogen chloride gas in the mixed gas. An air inlet pipe 3 is connected to the cover body 12 of the absorption bottle 1 storing the alkali solution, and an air outlet pipe 4 penetrates through the cover body 12 of the absorption bottle 1 storing the bromocresol green indicator. The hydrogen chloride main pipe is connected to the air inlet pipe 3, and a sampling balloon 5 is connected to the air outlet pipe 4. The sampling balloon 5 is a rubber balloon. The mixed gas output from the hydrogen chloride main pipe is transported to the air inlet pipe 3, and then sequentially transported to different absorption bottles 1 through the connecting pipes 2. After the hydrogen chloride gas is completely absorbed, the remaining gas is transported to the sampling balloon 5 for collection. The sampling balloon 5 can expand under the action of air pressure and can discharge all the internal gas into the chromatograph under the external pressure, increasing the amount of gas obtained by the chromatograph and improving the accuracy of the analysis result of the chromatograph, thereby enhancing the representativeness of the analysis result of the chromatograph.

[0020] The implementation principle of the embodiment of the present utility model is as follows: Load the alkali solution, pure water, and bromocresol green indicator into the three absorption bottles 1, and then connect the three absorption bottles 1 in sequence. Connect the sampling balloon 5 to the air outlet pipe 4, and connect the hydrogen chloride main pipe to the air inlet pipe 3. Gas is continuously input into the sampling balloon 5. After collecting enough gas, stop the transportation of the mixed gas, remove the sampling balloon 5 and connect it to the chromatograph for the analysis of the oxygen content.

[0021] The above are all the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A device for measuring oxygen content in a hydrogen chloride main pipe, characterized in that: The invention comprises an absorption bottle (1) and a connecting tube (2), wherein a plurality of the absorption bottles (1) are provided, and a plurality of the connecting tubes (2) are provided, wherein the plurality of the connecting tubes (2) connect the plurality of the absorption bottles (1) to each other, wherein one of the absorption bottles (1) is connected to an air inlet pipe (3), and another of the absorption bottles (1) is connected to an air outlet pipe (4), and the air outlet pipe (4) is connected to a sampling bladder (5).

2. The device for measuring oxygen content in a hydrogen chloride main pipe according to claim 1, characterized in that: The sampling bladder (5) is a rubber bladder.

3. The device for measuring oxygen content in a hydrogen chloride main pipe according to claim 1, characterized in that: The plurality of absorption bottles (1) are sequentially filled with alkaline solution, pure water and bromocresol green indicator.

4. The device for measuring oxygen content in a hydrogen chloride main pipe according to claim 1, characterized in that: The absorption bottle (1) comprises a bottle body (11) and a cover body (12), and the connecting pipe (2) passes through the cover body (12).

5. The device for measuring oxygen content in a hydrogen chloride main pipe according to claim 1, characterized in that: The sampling bladder (5) is detachably connected to the air outlet pipe (4).

6. The device for measuring oxygen content in a hydrogen chloride main pipe according to claim 1, characterized in that: The volume of the absorption bottle (1) is 3000-5000 mL.

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