Multi-stage gas washing oil gas treatment device

Abstract

The utility model discloses a multistage gas washing oil gas treatment device, which belongs to the technical field of gas treatment and comprises a working tank and more than two partition plates, the inside of the working tank is divided into a head treatment chamber, a middle treatment chamber and a tail treatment chamber by the more than two partition plates, and a first gas inlet pipe, a first exhaust pipe, a first liquid inlet pipe and a first liquid outlet pipe are arranged on the working tank. An outlet of the first gas inlet pipe is located below the adsorption liquid level of the first treatment chamber, and the partition plate is connected with a second gas inlet pipe used for communicating the adjacent treatment chambers. According to the utility model, a plurality of treatment chambers are used for absorbing harmful gas, so that the gas treatment and adsorption efficiency is improved; the gas can be controlled to selectively pass through a specified treatment chamber, the gas treatment process can be selected, and the use requirements of different gases and different use scenes can be met; when the bottoms of all the treatment chambers in the working tank are communicated, single gas can be conveniently treated, when the bottoms of all the treatment chambers are not communicated, different absorption liquids can be conveniently contained, and multi-component mixed gas can be respectively treated.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas processing, and in particular relates to a multi-stage gas washing oil and gas processing device. Background Art

[0002] During chemical production, storage, and transportation, as well as fuel use and refueling testing, residual media or volatilized gaseous media within process pipelines or storage facilities need to be purged and inerted to meet environmental and safety requirements. This includes gases such as ammonia, hydrogen chloride, hydrogen bromide, hydrogen iodide, sulfur dioxide, chlorine, nitrogen dioxide, methanol, ethanol, and formaldehyde. The purged gas contains toxic and hazardous substances and cannot be discharged directly into the atmosphere. Existing adsorption tanks are typically used to adsorb the purged gas, but single-shot adsorption treatment is ineffective. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a multi-stage scrubbing oil and gas processing device to improve the processing effect of the purged oil and gas.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0005] A multi-stage gas washing oil and gas treatment device includes a working tank for containing adsorption liquid and two or more partition plates arranged in the working tank, the two or more partition plates divide the working tank into a first treatment chamber, an intermediate treatment chamber and a tail treatment chamber, the working tank is provided with a first air inlet pipe, a first exhaust pipe, a first liquid inlet pipe and a first liquid outlet pipe, the outlet of the first air inlet pipe is located below the adsorption liquid level in the first treatment chamber, and the partition plate is connected to a second air inlet pipe for connecting adjacent treatment chambers.

[0006] Furthermore, the first processing chamber, the middle processing chamber and the last processing chamber are connected at the bottom.

[0007] Furthermore, there is more than one intermediate processing chamber.

[0008] Furthermore, a gas connecting pipe for connecting the first treatment chamber and the tail treatment chamber is provided in the working tank, a first connecting valve is provided on the pipe section of the gas connecting pipe located in the first treatment chamber, and a second connecting valve is provided on the pipe section of the gas connecting pipe located in the tail treatment chamber.

[0009] Furthermore, a branch pipe communicating with the intermediate processing chamber is provided on the pipe section of the gas communicating pipe located in the intermediate processing chamber, a third communicating valve is provided on the branch pipe, and a fourth communicating valve is provided on the second air inlet pipe.

[0010] Furthermore, the working tank is provided with a first concentration probe corresponding to the first treatment chamber and a second concentration probe corresponding to the tail treatment chamber.

[0011] Furthermore, a first liquid level gauge is provided on the top of the working tank, and a second liquid level gauge is provided on the side wall of the working tank.

[0012] Furthermore, the first exhaust pipe is provided with a gas detector and a flame arrester.

[0013] Furthermore, a rainproof cap is provided at the top of the exhaust pipe.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0015] 1. The working tank contains the absorption liquid and is equipped with a partition plate. The partition plate divides the working tank into multiple treatment chambers. The multiple treatment chambers are used to absorb harmful gases to prevent toxic and harmful substances from being directly discharged into the atmosphere, thereby improving the gas treatment adsorption efficiency;

[0016] 2. A gas connecting pipe is provided and a branch pipe connected to each intermediate processing chamber is provided on the gas connecting pipe. A fourth connecting valve is provided on the second air inlet pipe, so that the gas can be controlled to selectively pass through the designated processing chamber. The gas processing process can be selected to meet the needs of different gases and different usage scenarios;

[0017] 3. When the bottoms of the treatment chambers in the working tank are connected, it is convenient to process a single gas. When the bottoms of the treatment chambers are not connected, it is convenient to accommodate different absorption liquids and can process mixed gases of multiple components separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the device in Example 1 of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure inside the working tank of Example 1;

[0020] Figure 3 This is a schematic diagram of the gas communication pipe structure of Example 1;

[0021] Figure 4 This is a schematic diagram of the structure of the device of Example 2 of the present utility model. DETAILED DESCRIPTION

[0022] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solutions of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0023] Example 1

[0024] like Figure 1 As shown, a multi-stage scrubbing oil and gas processing device includes a working tank 1 and a partition plate 2. The working tank 1 is a rectangular tank. The partition plate 2 is arranged in the working tank 1. The top of the partition plate 2 is connected to the top wall of the working tank 1. The partition plate 2 extends downward from the top wall of the working tank 1. The lower end of the partition plate 2 is at a certain distance from the bottom wall of the working tank 1. Six partition plates 2 are arranged at intervals in the longitudinal direction of the working tank 1, thereby dividing the space in the working tank 1 into a first treatment chamber 3, an intermediate treatment chamber 4 and a tail treatment chamber 5. The first treatment chamber 3 is located at the head end of the working tank 1, and the middle treatment chamber 4 is located at the tail treatment chamber 5. There are five treatment chambers 4 arranged in sequence. The tail treatment chamber 5 is located at the tail end of the working tank 1. Since the lower end of the partition plate 2 is not connected to the bottom wall of the working tank 1, the bottoms of the first treatment chamber 3, the middle treatment chamber 4 and the tail treatment chamber 5 are connected. When the working tank 1 contains the adsorption liquid, the adsorption liquid in each treatment chamber is at the same liquid level. In this embodiment, the treated gas is mainly ammonia, and water is selected as the adsorption liquid. When the other gas to be treated is mainly sulfur-containing waste gas, diatomaceous earth solvent can be selected. When the gas to be treated is mainly nitrogen oxide waste gas, it is absorbed by alkali solution or acid.

[0025] like Figure 1 and Figure 2As shown, the working tank 1 is provided with a first air inlet pipe 11, a first exhaust pipe 12, a first liquid inlet pipe 13 and a first liquid outlet pipe 14. The first air inlet pipe 11 is connected to the upper part of the side wall of the head end of the working tank 1 and is communicated with the first treatment chamber 3. The first exhaust pipe 12 is located on the top wall of the working tank 1 near the tail end and is communicated with the tail treatment chamber 5. The first liquid inlet pipe 13 is connected to the side wall of the head end of the working tank 1 near the lower part and is communicated with the first treatment chamber 3. A liquid inlet valve is provided on the first liquid inlet pipe 13, and the adsorption liquid enters the working tank 1 through the first liquid inlet pipe 13. The first liquid outlet pipe 14 is connected to the bottom wall of the working tank 1 near the tail end and is communicated with the tail treatment chamber 5. A liquid outlet valve is provided on the first liquid outlet pipe 14, and the adsorption liquid is discharged through the first liquid outlet pipe 14. The discharged waste liquid is discharged into a special collection cabinet or collection barrel and transported to a professional hazardous waste treatment plant. The inlet end of the first air inlet pipe 11 is arranged at a position near the upper part of the side wall of the first end of the working tank 1. The first air inlet pipe 11 is in an inverted L shape. The outlet of the first air inlet pipe 11 is located below the adsorption liquid level in the first treatment chamber 3. The purged oil and gas enter the first treatment chamber 3 from the first air inlet pipe 11, and after being treated by the adsorption liquid in the first treatment chamber 3, they enter the upper space of the first treatment chamber 3 upward. A second air inlet pipe 21 is connected to the partition plate 2, and adjacent treatment chambers are connected through the second air inlet pipe 21. The second air inlet pipe 21 is also in an inverted L shape. The inlet end of the second air inlet pipe 21 is located on the upper part of the partition plate 2 and is connected to the adjacent upper treatment chamber. The outlet end of the second air inlet pipe 21 is located below the adsorption liquid level of the treatment chamber. The gas in the upper space of the first treatment chamber 3 enters the adjacent intermediate treatment chamber 4 through the second air inlet pipe 21, and after being treated with the adsorption liquid in the intermediate treatment chamber 4, it enters the upper space of the intermediate treatment chamber 4 upward, and then enters the adjacent intermediate treatment chamber 4 through the second air inlet pipe 21 of the next treatment chamber, and enters the tail treatment chamber 5 after passing through five intermediate treatment chambers 4 in sequence. After being treated with the adsorption liquid in the tail treatment chamber 5, it is discharged upward through the first exhaust pipe 12.

[0026] like Figure 1 、 Figure 2 and Figure 3As shown, there is a gas connecting pipe 6 in the working tank 1. The gas connecting pipe 6 is a straight pipe and is arranged at the upper position inside the working tank 1. The gas connecting pipe 6 is used to connect the upper gas space of the first treatment chamber 3 and the tail treatment chamber 5. The gas connecting pipe 6 is located in the first treatment chamber 3 and is provided with a first connecting valve 61. The gas connecting pipe 6 is located in the tail treatment chamber 5 and is provided with a second connecting valve 62. By opening the first connecting valve 61 and the second connecting valve 62, the first treatment chamber 3 is connected with the tail treatment chamber 5. The gas connecting pipe 6 is located in the intermediate treatment chamber 4 and is provided with a branch pipe 63. There are five branch pipes 63 corresponding to the five intermediate treatment chambers 4. Each branch pipe 63 is connected to the corresponding intermediate treatment chamber 4. A third connecting valve 631 is provided on the branch pipe 63. When the third connecting valve 631 is opened, the corresponding intermediate treatment chamber 4 is connected to the gas connecting pipe 6 through the corresponding branch pipe 63. A fourth connecting valve 211 is provided on the second air inlet pipe 21. The fourth connecting valve 211 is arranged at the upper position of the second air inlet pipe 21 and can control the on-off of the second air inlet pipe 21. Therefore, by controlling the on-off of the first connecting valve 61, the second connecting valve 62, the third connecting valve 631 and the fourth connecting valve 211, the direction of the gas can be controlled. For example, when the front-end first-stage intermediate treatment chamber 4 is not needed to work, the fourth connecting valve 211 of the second air inlet pipe 21 in the first-stage intermediate treatment chamber 4 is closed, the first connecting valve 61 and the third connecting valve 631 in the first-stage intermediate treatment chamber 4 are opened, and the other third connecting valves 631 and the second connecting valve 62 are closed. After being processed by the first treatment chamber 3, the gas directly enters the upper gas space of the front-end first-stage intermediate treatment chamber 4 through the gas connecting pipe 6, thereby not being processed by the adsorption liquid of the intermediate treatment chamber 4, and then enters the adjacent second-stage intermediate treatment chamber through the second air inlet pipe 21 of the adjacent intermediate treatment chamber 4. 4. Continue the normal processing flow; when the first-stage intermediate processing chamber 4 and the second-stage intermediate processing chamber 4 are not needed to work, close the fourth connecting valve 211 of the two second air inlet pipes 21 in the first-stage intermediate processing chamber 4 and the second-stage intermediate processing chamber 4, open the first connecting valve 61 and the third connecting valve 631 in the first-stage intermediate processing chamber 4 and the second-stage intermediate processing chamber 4, and close the other third connecting valves 631 and the second connecting valve 62, so that the gas enters the upper gas space of the second-stage intermediate processing chamber 4 directly through the gas connecting pipe 6 after being processed by the first processing chamber 3, thereby not passing through the adsorption liquid treatment of the first and second-stage intermediate processing chambers 4, and then enters the adjacent third-stage intermediate processing chamber 4 through the second air inlet pipe 21 of the adjacent third-stage intermediate processing chamber 4 to continue the normal processing flow; and so on, by setting the gas connecting pipe 6 and multiple connecting valves, the gas can be selected to undergo several levels of adsorption treatment to meet the needs of different concentrations or types of use.

[0027] like Figure 1As shown, the top wall of the working tank 1 is equipped with a first concentration probe 71 and a second concentration probe 72. These two concentration probes are conventional ammonia concentration detectors (the gas being treated is ammonia, so corresponding concentration detectors are used). The first concentration probe 71 is located corresponding to the first treatment chamber 3 and is used to detect the ammonia concentration of the adsorption liquid in the first treatment chamber 3. The second concentration probe 72 is located corresponding to the tail treatment chamber 5 and is also a conventional ammonia concentration detector, used to detect the ammonia concentration of the adsorption liquid in the tail treatment chamber 5. A first liquid level gauge 73 is installed on the top of the working tank 1. The first liquid level gauge 73 is located corresponding to the middle intermediate treatment chamber 4. The first liquid level gauge 73 uses a conventional float level gauge and serves as an alarm for extremely low liquid level. When the liquid level in the working tank 1 falls below a certain value, the first liquid level gauge 73 activates and issues an alarm signal. A second liquid level gauge 74 is installed on the side wall of the working tank 1. The second liquid level gauge 74 uses a conventional magnetic flap level gauge and is used to monitor the liquid level in the working tank 1. In addition to determining the ammonia concentration, a liquid level increase of more than 20% to 30% can also be used as a criterion for determining whether to replace the adsorption liquid. A gas detector 75 is provided on the first exhaust pipe 12 for detecting the ammonia concentration in the exhaust gas. A flame arrester 76 is also provided on the first exhaust pipe 12. Non-toxic and harmless gas can be discharged into the atmosphere directly through the first exhaust pipe 12 and the flame arrester. A rain cap 77 is provided on the top of the exhaust pipe 12 to prevent rainwater from entering.

[0028] Example 2

[0029] The difference from Example 1 is that this embodiment has four partition plates 2, thereby dividing the space within the working tank 1 into a first treatment chamber 3, three intermediate treatment chambers 4, and a tail treatment chamber 5. The lower end of the partition plate 2 is connected to the bottom wall of the working tank 1, so that the treatment chambers are not connected to each other. The adsorption liquid is separately introduced into each treatment chamber. The first liquid inlet pipe 13 is used solely for liquid inlet to the first treatment chamber 3. The tops of the three intermediate treatment chambers 4 and the tail treatment chamber 5 are respectively connected to second liquid inlet pipes 15. Each intermediate treatment chamber 4 and the tail treatment chamber 5 is separately introduced through the second liquid inlet pipes 15. Therefore, different concentrations or types of adsorption liquids can be set inside the first treatment chamber 3, the three intermediate treatment chambers 4, and the tail treatment chamber 5 to adsorb gases separately. A drain pipe is provided at the bottom of each treatment chamber, connected to the first liquid outlet pipe 14, for draining liquid. Four first liquid level gauges 73 are provided on the top of the working tank 1, corresponding to the first treatment chamber 3 and the three intermediate treatment chambers 4, respectively. The first liquid level gauge 73 uses an existing radar level gauge to measure the liquid level height in each treatment chamber.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A multi-stage scrubbing oil and gas treatment device, characterized in that: The invention comprises a working tank (1) for containing adsorption liquid and two or more partition plates (2) arranged in the working tank (1), wherein the two or more partition plates (2) divide the working tank (1) into a first treatment chamber (3), an intermediate treatment chamber (4) and a tail treatment chamber (5); the working tank (1) is provided with a first air inlet pipe (11), a first air outlet pipe (12), a first liquid inlet pipe (13) and a first liquid outlet pipe (14); the outlet of the first air inlet pipe (11) is located below the adsorption liquid level in the first treatment chamber (3); and the partition plate (2) is connected to a second air inlet pipe (21) for communicating with adjacent treatment chambers.

2. The multi-stage scrubbing oil and gas treatment device according to claim 1, characterized in that: The first treatment chamber (3), the middle treatment chamber (4) and the tail treatment chamber (5) are connected at the bottom.

3. The multi-stage scrubbing oil and gas treatment device according to claim 1, characterized in that: There is more than one intermediate processing chamber (4).

4. The multi-stage scrubbing oil and gas treatment device according to claim 1, characterized in that: A gas communication pipe (6) for connecting the first treatment chamber (3) and the tail treatment chamber (5) is provided in the working tank (1); a first communication valve (61) is provided on the pipe section of the gas communication pipe (6) located in the first treatment chamber (3); and a second communication valve (62) is provided on the pipe section of the gas communication pipe (6) located in the tail treatment chamber (5).

5. The multi-stage scrubbing oil and gas treatment device according to claim 4, characterized in that: The gas communication pipe (6) is provided with a branch pipe (63) in communication with the intermediate processing chamber (4) on the pipe section located in the intermediate processing chamber (4); the branch pipe (63) is provided with a third communication valve (631); and the second air inlet pipe (21) is provided with a fourth communication valve (211).

6. The multi-stage scrubbing oil and gas treatment device according to claim 1, characterized in that: The working tank (1) is provided with a first concentration probe (71) corresponding to the first treatment chamber (3) and a second concentration probe (72) corresponding to the tail treatment chamber (5).

7. The multi-stage scrubbing oil and gas treatment device according to claim 1, characterized in that: A first liquid level gauge (73) is provided on the top of the working tank (1), and a second liquid level gauge (74) is provided on the side wall of the working tank (1).

8. The multi-stage scrubbing oil and gas treatment device according to claim 1, characterized in that: The first exhaust pipe (12) is provided with a gas detector (75) and a flame arrester (76).

9. The multi-stage scrubbing oil and gas treatment device according to claim 8, characterized in that: The top end of the exhaust pipe (12) is provided with a rainproof cap (77).

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