Liquid 1-butene vaporization device

Abstract

The utility model provides a liquid 1-butene vaporization device, and relates to the technical field of chemical raw material quality inspection, the liquid 1-butene vaporization device comprises a sampling steel cylinder, a vaporization chamber, a non-adsorption aluminum foil gas bag and a six-way gas sample injection valve, the device ensures the controllability of the total amount of vaporized sample gas and the consistency of the composition proportion by accurately quantifying a liquid sample, and the liquid 1-butene vaporization device is simple in structure and convenient to operate. By means of complete vaporization of the vaporizing chamber and buffering of the non-adsorption aluminum foil air bag, vaporized sample components are mixed evenly, light and heavy components of a gas sample collected by the six-way gas sample injection valve are distributed evenly, the sample detection accuracy is ensured, the sample cannot be adsorbed in the sampling process, and the sampling efficiency is improved. According to the device, a taken sample can be completely vaporized through the vaporizing chamber, and a completely vaporized gaseous sample can be completely transferred through the arrangement of the one-way valve, so that errors cannot be caused to later detection of the sample, and the problems that in the prior art, a detection result is deviated, and errors are easily caused to later detection of the sample are solved.

Description

Technical Field

[0001] This application relates to the field of chemical raw material quality inspection technology, and more specifically, to a liquid 1-butene vaporization device. Background Technology

[0002] 1-Butene is an organic compound with the chemical formula C4H8. It is a colorless and odorless gas at room temperature and pressure, insoluble in water, slightly soluble in benzene, and readily soluble in ethanol and ether. It is one of the important basic chemical raw materials used to prepare butadiene, isoprene, synthetic rubber, etc.

[0003] Therefore, it is necessary to test the prepared 1-butene chemical raw material to confirm its quality. In existing technologies, 1-butene sampling and testing uses a flash vaporization device to vaporize the liquid 1-butene sample. The flash vaporization device ensures complete vaporization of the liquid sample. After vaporization, a six-way gas injection valve is used for injection, followed by analysis and detection using a chromatograph. However, in existing technologies, the flash vaporization device is directly connected to the six-way gas injection valve during sampling, resulting in only partial vaporization of 1-butene in the flash vaporization device. If the components in the liquid sample have similar boiling points, there is no problem. However, if the liquid sample contains a higher proportion of high-boiling-point components, this will not be effective. The liquid residue from vaporization may be enriched with high-boiling-point components, easily leading to an excess of low-boiling-point components in the gas phase. This results in uneven distribution of light and heavy components in the gas, causing instability in the gaseous transfer of the vaporized sample when it enters the six-way gas injection valve. Consequently, the distribution of light and heavy components in the gas sample collected by the six-way gas injection valve is uneven, meaning there is an excess of light components in the gas, which deviates from the actual distribution. This causes errors in the chromatograph's analysis of the sample composition and the concentration analysis of 1-butene in the sample, leading to inaccurate detection results. Furthermore, after multiple injections, the flash vaporization device will have a large amount of residue from previous tests, which can easily cause errors in the detection of subsequent samples. Therefore, there are shortcomings. Utility Model Content

[0004] To overcome the above deficiencies, this invention provides a liquid 1-butene vaporization device that performs quantitative analysis of 1-butene in the liquid stage and ensures that the compositional uniformity of 1-butene in the liquid stage is stably transferred to the gaseous sample. This ensures that when the gaseous sample is analyzed by the chromatograph, its composition is uniform and consistent with that of the actual sample. Furthermore, no gaseous sample remains during the vaporization process, thus avoiding errors when re-analyzing the sample later.

[0005] This application is implemented as follows:

[0006] A sampling cylinder is fixedly connected to a non-adsorption metering bottle, and ball valves are provided at both ends of the non-adsorption metering bottle;

[0007] The vaporization chamber has its inlet top connected to the outlet end of the non-adsorption metering bottle via a three-way valve.

[0008] A non-adsorption aluminum foil gas bag, wherein the inlet end of the non-adsorption aluminum foil gas bag is fixedly connected to the outlet end of the vaporization chamber, and a one-way valve is provided between the non-adsorption aluminum foil gas bag and the vaporization chamber.

[0009] A six-way gas sampling valve is provided, wherein the outlet section of the non-adsorbent aluminum foil gas bag is connected to the sampling end of the six-way gas sampling valve, and the inlet end of the six-way gas sampling valve is connected to an analytical instrument.

[0010] In one embodiment of this application, the connection between the non-adsorption metering bottle and the sampling cylinder and the vaporization chamber is made by a quick connector.

[0011] In one embodiment of this application, the three-way valve has three ports, one of which is connected to the non-adsorption metering bottle, one of which is connected to the vaporization chamber, and the last port is connected to a vacuum pump.

[0012] In one embodiment of this application, the outlet end of the vaporization chamber and the non-adsorbent aluminum foil gas bag is configured as a tapered nozzle, and the non-adsorbent aluminum foil gas bag is connected to the tapered nozzle.

[0013] In one embodiment of this application, a pressure sensor is installed at the outlet of the vaporization chamber, and a micro-pressure sensor is installed at the inlet of the non-adsorbent aluminum foil gas bag.

[0014] In one embodiment of this application, an air bag valve is provided between the one-way valve and the inlet of the non-adsorbent aluminum foil air bag.

[0015] In one embodiment of this application, a metering ring is provided inside the sampling end of the six-way gas injection valve.

[0016] The beneficial effects of this application are as follows: Before sampling, the non-adsorption quantitative bottle is evacuated to create a negative pressure environment, and the vaporization chamber is preheated to a suitable temperature. At this point, the ball valve between the non-adsorption quantitative bottle and the sampling cylinder is opened, allowing the β-butene liquid sample from the sampling cylinder to flow into the non-adsorption quantitative bottle. After observing the non-adsorption quantitative bottle to ensure it is completely filled with liquid sample and free of air bubbles, the ball valve between the non-adsorption quantitative bottle and the sampling cylinder is closed. The ball valve between the non-adsorption quantitative bottle and the vaporization chamber is then opened, allowing the liquid sample to enter the vaporization chamber. The ball valve is then closed, and the liquid sample transforms from a liquid to a gaseous state within the vaporization chamber. Due to the sample's volume expansion, the pressure in the vaporization chamber increases, automatically opening the one-way valve and allowing the gaseous sample to enter the non-adsorption aluminum foil gas bag. Once the gaseous sample has completely left the vaporization chamber, the pressure in the vaporization chamber returns to normal, and the one-way valve cannot open. This ensures that the sample completely enters the non-adsorption aluminum foil gas bag, thus ensuring that no sample remains in the upstream process. Without affecting subsequent sample testing, the fully vaporized sample diffuses freely within the non-adsorbent aluminum foil gas bag, forming a uniform gaseous mixture. This mixture then enters the sampling end of the six-way gas sampling valve and proceeds through the valve into the analytical instrument for analysis. This device ensures controllable total gas volume and consistent composition ratio after vaporization by precisely quantifying liquid samples. The complete vaporization of the vaporization chamber and the buffering effect of the non-adsorbent aluminum foil gas bag ensure uniform mixing of the vaporized sample composition. This results in a uniform distribution of light and heavy components in the gas sample collected by the six-way gas sampling valve, ensuring accurate sample detection. Furthermore, the device does not adsorb samples during sampling. The vaporization chamber ensures complete vaporization of the sample, and the one-way valve allows for complete transfer of the fully vaporized gaseous sample, preventing errors in subsequent sample testing. This solves the problem in existing technologies where uneven distribution of light and heavy components in gaseous samples leads to deviations in test results and errors in subsequent sample testing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This application provides a schematic diagram of the structure of a liquid 1-butene vaporization device according to an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structure of the quick connector is provided for the embodiments of this application;

[0020] Figure 3 A flowchart of a liquid 1-butene vaporization device is provided for embodiments of this application;

[0021] In the diagram: 1-Sampling cylinder; 2-Non-adsorption quantitative bottle; 21-Quick connector; 3-Ball valve; 4-Vaporization chamber; 5-Three-way valve; 6-Non-adsorption aluminum foil gas bag; 61-Gas bag valve; 7-One-way valve; 8-Six-way gas injection valve; 9-Analytical instrument; 10-Vacuum pump; Detailed Implementation

[0022] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] like Figures 1-3 As shown, a liquid 1-butene vaporization apparatus according to an embodiment of this application includes:

[0024] Sampling cylinder 1, sampling cylinder 1 is fixedly connected to non-adsorption metering bottle 2, and ball valves 3 are installed at both ends of non-adsorption metering bottle 2;

[0025] The vaporization chamber 4 has its inlet top connected to the outlet end of the non-adsorption metering bottle 2 via a three-way air valve 5.

[0026] The non-adsorption aluminum foil gas bag 6 has its inlet end fixedly connected to the outlet end of the vaporization chamber 4. A one-way valve 7 is provided between the non-adsorption aluminum foil gas bag 6 and the vaporization chamber 4. The one-way valve 7 is set to automatically open when the pressure of the vaporization chamber 4 reaches a certain value.

[0027] The outlet of the six-way gas injection valve 8 and the non-adsorption aluminum foil gas bag 6 are connected to the sampling end of the six-way gas injection valve 8. The sampling end of the six-way gas injection valve 8 is connected to the analytical instrument 9. Both the non-adsorption quantitative bottle 2 and the vaporization chamber 4 have polished inner walls and are coated with an inert coating. The non-adsorption aluminum foil gas bag 6 is also coated with an inert coating. Before sampling, the non-adsorption quantitative bottle 2 is evacuated to a negative pressure state, and the vaporization chamber 4 is preheated to a suitable temperature. At this time, the ball valve 3 between the non-adsorption quantitative bottle 2 and the sampling cylinder 1 is opened, allowing the 1-butene liquid sample in the sampling cylinder 1 to flow into the non-adsorption quantitative bottle 2. By observing the non-adsorption quantitative bottle 2, it is confirmed that the liquid sample completely fills the bottle and there are no air bubbles inside. Then, the ball valve 3 between the non-adsorption quantitative bottle 2 and the sampling cylinder 1 is closed, and the non-adsorption quantitative bottle 2 is opened again. Ball valve 3, located between chamber 2 and vaporization chamber 4, allows the liquid sample to enter chamber 4. When ball valve 3 is closed, the liquid sample transforms from a liquid to a gaseous state within chamber 4. Due to the sample's volume expansion, the pressure in chamber 4 increases, automatically opening one-way valve 7. This allows the gaseous sample to enter the non-adsorption aluminum foil gas bag 6. Once the gaseous sample has completely left chamber 4, the pressure in chamber 4 returns to normal, and one-way valve 7 cannot open. This ensures the sample completely enters the non-adsorption aluminum foil gas bag 6, preventing residue buildup in the upstream process. The sample is retained without affecting subsequent sample testing. The completely vaporized sample diffuses freely within the non-adsorption aluminum foil gas bag 6, forming a uniform gaseous mixture. This mixture then enters the sampling end of the six-way gas injection valve 8 and then flows into the analytical instrument 9 for analysis. This device ensures the controllability of the total amount of gas in the vaporized sample and the consistency of its composition ratio by accurately quantifying the liquid sample. The complete vaporization of the vaporization chamber 4 and the buffering effect of the non-adsorption aluminum foil gas bag 6 ensure a uniform mixture of vaporized sample components. This results in a uniform distribution of light and heavy components in the gas sample collected by the six-way gas injection valve 8, ensuring the accuracy of sample detection. Furthermore, the device does not adsorb the sample during sampling. The vaporization chamber 4 ensures complete vaporization of the sample, and the one-way valve 7 allows for complete transfer of the completely vaporized gaseous sample, thus preventing errors in subsequent sample testing. This solves the problem in existing technologies where uneven distribution of light and heavy components in the gaseous sample leads to deviations in the detection results and errors in subsequent sample testing.

[0028] like Figure 1As shown, a pressure sensor is installed at the outlet of the vaporization chamber 4, and a micro-pressure sensor is installed at the inlet of the non-adsorption aluminum foil gas bag 6. The pressure sensor and micro-pressure sensor detect the pressure inside the vaporization chamber 4 and the non-adsorption aluminum foil gas bag 6, respectively. After the gas sample is completely vaporized in the vaporization chamber 4, it is transferred to the non-adsorption aluminum foil gas bag 6 through a one-way valve 7. The pressure sensor and micro-pressure sensor constantly monitor pressure changes. When the pressure sensor detects that the pressure in the vaporization chamber 4 has returned to the pressure before sample vaporization, and the micro-pressure sensor detects that the pressure inside the non-adsorption aluminum foil gas bag 6 matches the pressure required for complete transfer of the gaseous sample, it is determined that the gas sample has been completely transferred to the non-adsorption aluminum foil gas bag 6. This ensures that the completely vaporized gaseous sample is completely transferred, preventing errors in subsequent sample detection.

[0029] Furthermore, a gas bag valve 61 is installed between the inlet of the one-way valve 7 and the inlet of the non-adsorbent aluminum foil gas bag 6. The gas bag valve 61 is a safety redundancy to prevent the pressure setting of the one-way valve 7 from failing. When the pressure sensor detects that the vaporization chamber 4 has recovered to the pressure before sample vaporization, and the micro-pressure sensor detects that the pressure inside the non-adsorbent aluminum foil gas bag 6 meets the pressure required for complete transfer of the gaseous sample, the gas bag valve 61 is closed. A metering loop is installed in the sampling end of the six-way gas injection valve 8. The metering loop ensures that the gaseous sample entering the six-way gas injection valve 8 is metered, allowing the metering loop to be completely replaced by the gaseous sample, avoiding residue or mixing, thereby ensuring the accuracy of the injection volume. The outlet ends of the vaporization chamber 4 and the non-adsorbent aluminum foil gas bag 6 are set as tapered nozzles, and the non-adsorbent aluminum foil gas bag 6 is connected to the tapered nozzle. Setting the outlet end of the non-adsorbent aluminum foil gas bag 6 as a tapered nozzle increases the flow rate of the gas sample in the vaporization chamber 4, thereby allowing the gas sample to quickly enter the non-adsorbent aluminum foil gas bag 6.

[0030] like Figure 2 As shown, the connection points between the non-adsorption metering bottle 2, the sampling cylinder 1, and the vaporization chamber 4 are all via quick-connect couplings 21. The quick-connect couplings 21 allow for quick insertion and removal of the non-adsorption metering bottle 2, facilitating the replacement of bottles with different volumes as needed. The three-way valve 5 has three ports: one port connects to the non-adsorption metering bottle 2, one port connects to the vaporization chamber 4, and the last port connects to the vacuum pump 10. Before sampling, the connection between the vacuum pump 10 and the non-adsorption metering bottle 2 is opened via the three-way valve 5, and the vacuum pump 10 is used to evacuate the non-adsorption metering bottle 2, creating a negative pressure environment inside the bottle.

[0031] In summary, the working principle of the liquid 1-butene vaporization device of this utility model embodiment is as follows: Before sampling, the vacuum pump 10 is used to evacuate the non-adsorption metering bottle 2, thereby creating a negative pressure environment inside the non-adsorption metering bottle 2. The vaporization chamber 4 is preheated to a suitable temperature. At this time, the ball valve 3 between the non-adsorption metering bottle 2 and the sampling cylinder 1 is opened, allowing the 1-butene liquid sample in the sampling cylinder 1 to flow into the non-adsorption metering bottle 2. By observing the non-adsorption metering bottle 2, it is confirmed that the liquid sample completely fills the non-adsorption metering bottle 2 and that there are no air bubbles inside the bottle before closing the valve. Close the ball valve 3 between the non-adsorption quantitative bottle 2 and the sampling cylinder 1, open the ball valve 3 between the non-adsorption quantitative bottle 2 and the vaporization chamber 4 to allow the liquid sample to enter the vaporization chamber 4, and then close the ball valve 3. The liquid sample changes from a liquid to a gaseous state within the vaporization chamber 4. Due to the volume expansion of the sample, the pressure in the vaporization chamber 4 increases, automatically pushing the one-way valve 7 to open, allowing the gaseous sample to enter the non-adsorption aluminum foil gas bag 6. Once the gaseous sample has completely left the vaporization chamber 4, the pressure in the vaporization chamber 4 returns to normal, and the one-way valve 7 cannot open, thus ensuring that the sample completely enters the non-adsorption... The sample is adsorbed within the aluminum foil gas bag 6, ensuring no sample residue remains in the initial process and does not affect subsequent sample testing. The completely vaporized sample diffuses freely within the non-adsorbed aluminum foil gas bag 6, forming a uniform gaseous mixture. This mixture then enters the sampling end of the six-way gas injection valve 8 and is subsequently introduced into the analytical instrument 9 for analysis. This device ensures the controllability of the total gas volume and the consistency of the composition ratio of the vaporized sample through precise quantification of the liquid sample. Utilizing the complete vaporization of the vaporization chamber 4 and the buffering effect of the non-adsorbed aluminum foil gas bag 6, the vaporized sample composition is uniformly mixed, ensuring a uniform distribution of light and heavy components in the gas sample collected by the six-way gas injection valve 8. This ensures the accuracy of sample detection and prevents sample adsorption during sampling. The vaporization chamber 4 ensures complete vaporization of the sample, and the one-way valve 7 allows for complete transfer of the completely vaporized gaseous sample, thus preventing errors in subsequent sample testing. This solves the problem in existing technologies where uneven distribution of light and heavy components in the gaseous sample leads to deviations in detection results and errors in subsequent sample testing.

[0032] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A liquid 1-butene vaporization device, characterized in that, include: A sampling cylinder (1) is fixedly connected to a non-adsorption metering bottle (2), and ball valves (3) are provided at both ends of the non-adsorption metering bottle (2). Vaporization chamber (4), the top of the inlet of the vaporization chamber (4) is connected to the outlet of the non-adsorption metering bottle (2) through a three-way air valve (5); A non-adsorption aluminum foil gas bag (6) is provided, with its inlet end fixedly connected to the outlet end of the vaporization chamber (4), and a one-way valve (7) is provided between the non-adsorption aluminum foil gas bag (6) and the vaporization chamber (4). A six-way gas sampling valve (8) is provided, with the outlet section of the non-adsorption aluminum foil gas bag (6) connected to the sampling end of the six-way gas sampling valve (8), and the inlet end of the six-way gas sampling valve (8) connected to an analytical instrument (9).

2. The liquid 1-butene vaporization device according to claim 1, characterized in that, The non-adsorption metering bottle (2) is connected to the sampling cylinder (1) and the vaporization chamber (4) via quick connectors (21).

3. The liquid 1-butene vaporization device according to claim 1, characterized in that, The three-way valve (5) has three ports, one of which is connected to the non-adsorption metering bottle (2), one of which is connected to the vaporization chamber (4), and the last port is connected to the vacuum pump (10).

4. The liquid 1-butene vaporization device according to claim 1, characterized in that, The outlet ends of the vaporization chamber (4) and the non-adsorbent aluminum foil gas bag (6) are configured as converging nozzles, and the non-adsorbent aluminum foil gas bag (6) is connected to the converging nozzle.

5. The liquid 1-butene vaporization device according to claim 1, characterized in that, A pressure sensor is installed at the outlet of the vaporization chamber (4), and a micro-pressure sensor is installed at the inlet of the non-adsorbent aluminum foil gas bag (6).

6. The liquid 1-butene vaporization device according to claim 1, characterized in that, An air bag valve (61) is provided between the one-way valve (7) and the inlet of the non-adsorbent aluminum foil air bag (6).

7. The liquid 1-butene vaporization device according to claim 1, characterized in that, A metering ring is provided inside the sampling end of the six-way gas injection valve (8).

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