Hydrogen sulfide gas absorption device

Abstract

The utility model discloses a hydrogen sulfide gas absorption device which comprises a body, a gas inlet pipe, an exhaust pipe and a gas dividing mechanism, a reaction tank and a storage tank are arranged in the body, and the storage tank is connected with the reaction tank through a liquid pumping mechanism; gas absorption liquid is arranged in the reaction tank, and one end of the gas inlet pipe extends into the bottom of the reaction tank and is connected with the gas dividing mechanism; the top of the reaction tank is communicated with an exhaust pipe; a plurality of through holes are formed in the gas outlet side of the gas cutting mechanism and used for cutting gas into a plurality of bubbles. Hydrogen sulfide gas is absorbed through the reaction tank, and liquid is supplemented to the reaction tank in time through the storage tank; the gas is cut into a plurality of bubbles through the gas cutting mechanism, the contact area between the gas and gas absorption liquid is increased, on the other hand, the guided-in gas is buffered and transited, the gas guiding-in speed can be controlled, gas absorption is stably carried out, and the gas absorption device has good practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas absorption equipment, and specifically relates to a hydrogen sulfide gas absorption device. Background Art

[0002] The vacuum glove box is a laboratory equipment that fills the box with high-purity inert gas and circulates to filter out the active substances in it. It is also called a glove box, an inert gas protection box, a dry box, etc. The vacuum glove box is mainly used to remove O2, H2O, and organic gases, and is widely used in ultra-pure environments without water, oxygen, and dust. For example: lithium-ion batteries and materials, semiconductors, supercapacitors, special lamps, laser welding, brazing, etc. This product is an ideal device for scientific experiments in colleges and universities, scientific research institutions, and corporate laboratories, and is widely used in biochemistry, metallurgy, electronics, chemical industry, geology, mining, medicine and other departments.

[0003] When using the glove box in daily life, such as disassembling sulfide solid-state batteries and conducting experiments containing sulfides, hydrogen sulfide gas will inevitably be produced in the glove box. Hydrogen sulfide gas is an inorganic compound that smells like rotten eggs at low concentrations. It is highly toxic and flammable, and it will also have a certain degree of impact on the environment. Therefore, how to deal with hydrogen sulfide gas in the glove box exhaust has become an issue that cannot be ignored.

[0004] According to the properties of hydrogen sulfide gas, it is acidic, so it is considered to use alkaline liquid to react with it to achieve the purpose of removing hydrogen sulfide gas. According to the chemical formula: H2S+2NaOH (solution)=Na2S+2H2O, it can be known that sodium hydroxide solution can react with hydrogen sulfide gas to generate sodium sulfide. Therefore, the utility model designs a device that can be used to clean hydrogen sulfide gas in glove box exhaust gas based on this chemical reaction. The device uses sodium hydroxide solution to react with hydrogen sulfide gas to remove hydrogen sulfide gas. The device has a simple structure, clear principle, high system reliability, and uses sodium hydroxide solution as a consumable solution. The cost is low, the operability is strong, and it has promotion value. Utility Model Content

[0005] The purpose of the utility model is to provide a hydrogen sulfide gas absorption device, aiming to solve the above problems. The utility model increases the contact area between hydrogen sulfide gas and liquid through the gas separation mechanism in the reaction pool, and replenishes the reaction pool with liquid in time through the reserve pool, which has good practicality.

[0006] The utility model is mainly realized through the following technical solutions:

[0007] A hydrogen sulfide gas absorption device comprises a body, an air inlet pipe, an exhaust pipe and a gas separation mechanism, wherein a reaction pool and a storage pool are arranged inside the body, and the storage pool is connected to the reaction pool through a liquid extraction mechanism; gas absorption liquid is arranged inside the reaction pool, one end of the air inlet pipe extends into the bottom of the reaction pool and is connected to the gas separation mechanism; the top of the reaction pool is connected to the exhaust pipe; a plurality of through holes are arranged on the gas outlet side of the gas separation mechanism for cutting the gas into a plurality of bubbles.

[0008] In order to better realize the utility model, further, the gas separation mechanism includes a shell, a cavity is arranged inside the shell, and a plurality of through holes are arranged on at least one side wall of the shell.

[0009] In order to better implement the utility model, further, a plurality of through holes arranged in a matrix are provided on the side wall of the shell.

[0010] In order to better realize the utility model, further, the bottom side wall of the shell is provided with a plurality of through holes, and the bottom of the shell is spaced apart from the bottom of the reaction pool. Preferably, a gauze is provided below the shell to further cut the small bubbles into tiny bubbles.

[0011] In order to better realize the utility model, further, the diameter of the through hole is 0.5 mm, and a 500-mesh gauze is arranged below the shell.

[0012] In order to better realize the utility model, further, the interior of the main body is divided into a reaction pool and a storage pool by a partition, and a liquid extraction mechanism is arranged on the top of the main body.

[0013] In order to better realize the utility model, further, a waste liquid pipe is provided at the bottom of the reaction tank, a valve is provided on the waste liquid pipe, and a pH detection mechanism is provided at one end of the waste liquid pipe close to the reaction tank, and the pH detection mechanism is used to detect the pH value of the gas absorption liquid.

[0014] In order to better realize the utility model, further, an air intake pipe and an exhaust pipe are respectively installed on both sides of the top of the reaction pool, and the exhaust pipe and the air intake pipe are L-shaped pipes respectively. The air intake pipe and the exhaust pipe are arranged in parallel, and a connecting pipe is arranged between the air intake pipe and the exhaust pipe, and a valve is arranged on the connecting pipe.

[0015] The beneficial effects of the utility model are as follows:

[0016] (1) The utility model introduces gas into the gas cutting mechanism through the air inlet pipe, which can, on the one hand, cut the gas into a plurality of bubbles, thereby increasing the contact area between the gas and the gas absorption liquid; on the other hand, the introduced gas is buffered and transitioned, thereby controlling the speed of gas introduction and making the gas absorption stable, and has good practicality;

[0017] (2) The utility model can install the air inlet pipe and the exhaust pipe in parallel through the L-shaped pipeline setting, which is convenient for setting the connecting pipe and is conducive to the gas reflux circulation treatment; secondly, by setting the pH detection mechanism on the waste liquid pipe at the bottom, it is convenient to detect the treatment status of the gas absorption liquid in real time, and the alkali content in the gas absorption liquid can be adjusted in time to ensure the high quality of gas absorption; the utility model is conducive to timely liquid replenishment through the setting of the reserve tank, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a hydrogen sulfide gas absorption device of the utility model;

[0019] Figure 2 for Figure 1 A top view of

[0020] Figure 3 for Figure 2 Middle BB section;

[0021] Figure 4 It is a schematic diagram of the structure of the air intake pipe, the exhaust pipe and the waste liquid pipe;

[0022] Figure 5 for Figure 4 Bottom view of .

[0023] Among them, 1-inlet pipe, 2-exhaust pipe, 3-waste liquid pipe, 4-pH detection mechanism, 5-reaction tank, 6-reserve tank, 7-gas separation mechanism. DETAILED DESCRIPTION

[0024] Embodiment 1:

[0025] A hydrogen sulfide gas absorption device, such as Figure 3 As shown, it includes a body, an air inlet pipe 1, an exhaust pipe 2 and a gas splitting mechanism 7. A reaction pool 5 and a storage pool 6 are arranged inside the body, and the storage pool 6 is connected to the reaction pool 5 through a liquid pumping mechanism; a gas absorption liquid is arranged inside the reaction pool 5, one end of the air inlet pipe 1 extends into the bottom of the reaction pool 5 and is connected to the gas splitting mechanism 7; the top of the reaction pool 5 is connected to the exhaust pipe 2; the gas outlet side of the gas splitting mechanism 7 is provided with a plurality of through holes for cutting the gas into a plurality of bubbles. Preferably, the interior of the body is divided into the reaction pool 5 and the storage pool 6 by a partition, and a liquid pumping mechanism is arranged on the top of the body.

[0026] Preferably, the gas splitting mechanism 7 comprises a shell, a cavity is arranged inside the shell, and a plurality of through holes are arranged on at least one side wall of the shell. Preferably, a plurality of through holes arranged in a matrix are arranged on the side wall of the shell.

[0027] Preferably, if Figure 4 and Figure 5 As shown, the bottom side wall of the shell is provided with a plurality of through holes, and the bottom of the shell is spaced apart from the bottom of the reaction pool 5. Preferably, a gauze is provided below the shell to further cut the small bubbles into tiny bubbles. Preferably, the diameter of the through hole is 0.5 mm, and a gauze of 500 mesh is provided below the shell.

[0028] Preferably, if Figure 1-Figure 5 As shown, a waste liquid pipe 3 is provided at the bottom of the reaction pool 5, a valve is provided on the waste liquid pipe 3, and a pH detection mechanism 4 is provided at one end of the waste liquid pipe 3 close to the reaction pool 5, and the pH detection mechanism 4 is used to detect the pH value of the gas absorption liquid.

[0029] Preferably, if Figure 1-Figure 5 As shown, an air intake pipe 1 and an exhaust pipe 2 are installed on both sides of the top of the reaction pool 5, respectively. The exhaust pipe 2 and the air intake pipe 1 are L-shaped pipes, respectively. The air intake pipe 1 and the exhaust pipe 2 are arranged in parallel, and a connecting pipe is arranged between the air intake pipe 1 and the exhaust pipe 2, and a valve is arranged on the connecting pipe.

[0030] The utility model can be used in conjunction with a glove box. After the waste gas in the glove box is discharged through a pipeline, it first enters an air inlet pipe 1 of an absorption device, and the waste gas is sent to a gas cutting device through the air inlet pipe 1. The waste gas is divided into fine foam gases by the gas cutting device, and then these foam waste gases enter a reaction tank 5. Through sufficient contact reaction with a sodium hydroxide solution, all the hydrogen sulfide gas in the waste gas is reacted, thereby completing the absorption of the hydrogen sulfide gas in the waste gas.

[0031] The utility model introduces gas into the gas cutting mechanism through the air inlet pipe 1, which can, on the one hand, cut the gas into a number of bubbles and increase the contact area between the gas and the gas absorption liquid; on the other hand, the introduced gas is buffered and transitioned, so the speed of gas introduction can be controlled to ensure stable gas absorption. The utility model can install the air inlet pipe 1 and the exhaust pipe 2 in parallel through the L-shaped pipeline setting, which is convenient for setting the connecting pipe and is conducive to gas reflux circulation treatment; secondly, by setting the pH detection mechanism 4 on the waste liquid pipe 3 at the bottom, it is convenient to detect the treatment status of the gas absorption liquid in real time, and the alkali content in the gas absorption liquid can be adjusted in time to ensure high quality of gas absorption; the utility model is conducive to timely liquid replenishment through the setting of the reserve tank 6, and has good practicality.

[0032] Embodiment 2:

[0033] A hydrogen sulfide gas absorption device, such as Figure 1-Figure 3 As shown, it includes a body, a pH detector, a gas separation mechanism 7 and a liquid pump. A reserve tank 6 and a reaction tank 5 are sequentially arranged inside the body, and sodium hydroxide solution is respectively contained in the reserve tank 6 and the reaction tank 5. The reserve tank 6 and the reaction tank 5 are connected by a liquid pump to replenish the reaction tank 5. L-shaped air inlet pipes 1 and exhaust pipes 2 are respectively arranged on the tops of both sides of the reaction tank 5, and a waste liquid pipe 3 is arranged at the bottom, and a pH detector is installed on the waste liquid pipe 3. One end of the air inlet pipe 1 extends into the bottom of the reaction tank 5 and is connected to the gas separation mechanism 7.

[0034] Preferably, if Figure 4 As shown, the air intake pipe 1 and the exhaust pipe 2 are L-shaped pipes respectively, and a connecting pipe is provided between the air intake pipe 1 and the exhaust pipe 2, and valves are provided on the air intake pipe 1, the exhaust pipe 2, the waste liquid pipe 3 and the connecting pipe respectively.

[0035] Preferably, if Figure 4 and Figure 5 As shown, the gas splitting mechanism 7 includes a shell, and the bottom of the shell is a hollow plate, provided with a plurality of through holes, for cutting the gas into a plurality of bubbles. Further, a gauze is provided below the shell, for further cutting the small bubbles into micro bubbles. Further, an exhaust space is provided between the shell and the reaction pool 5, and the four corners of the shell are respectively provided with legs.

[0036] The gas absorption liquid in the reaction tank 5 is a sodium hydroxide solution. When the hydrogen sulfide gas contacts and reacts with the sodium hydroxide, the sodium hydroxide in the reaction tank 5 will be consumed, and the liquid will gradually become neutral. When the sodium hydroxide in the solution has completed the reaction, the hydrogen sulfide gas can no longer be absorbed. Therefore, it is necessary to monitor the pH value of the solution in real time to promptly detect the consumption of sodium hydroxide. Based on this, the device is designed with a pH detector, in which the probe of the pH detector is installed at the waste liquid pipe 3. When the pH of the solution is lower than the set threshold, the device will automatically alarm to remind that the solution in the reaction tank 5 needs to be replaced. Preferably, the unreacted exhaust gas in the exhaust pipe 2 can be refluxed to the intake pipe 1 for treatment.

[0037] When the sodium hydroxide solution in the reaction tank 5 is completely reacted, the spare sodium hydroxide solution in the reserve tank 6 can be directly drawn into the reaction tank 5 by an acid- and alkali-resistant motor to replenish the sodium hydroxide solution in the reaction tank 5 to ensure the continuous reaction.

[0038] The utility model can be used in conjunction with a glove box, and the specific implementation process is as follows:

[0039] ①The exhaust gas in the glove box enters the absorption device:

[0040] When the exhaust gas in the glove box enters the absorption device through the intake pipe 1, it will first gather downward through the L-shaped intake pipe 1. A gas splitting device is set below the intake pipe 1. The gas splitting device is a rectangular hollow box with small air holes with a diameter of only 0.5 mm arranged evenly below. When the gas enters, it will be cut through the small air holes at the bottom of the gas splitting device, cutting the exhaust gas into countless small bubbles. At the same time, these small bubbles will also pass through the 500-mesh gauze set below, further cutting the small bubbles into tiny bubbles. In this way, the exhaust gas in the glove box can be fully mixed and reacted with the sodium hydroxide solution. The hydrogen sulfide gas can be absorbed more efficiently and cleanly.

[0041] ②The waste gas in the glove box reacts with the sodium hydroxide solution:

[0042] When the exhaust gas in the glove box reacts with the sodium hydroxide solution, the exhaust gas has been cut into tiny bubbles by the gas cutting device. This is done to allow the exhaust gas to fully contact and react with the sodium hydroxide solution, thereby better absorbing hydrogen sulfide gas. The specific reaction equation is:

[0043] H2S+2NaOH=Na2S+2H2O

[0044] According to the chemical reaction formula, sodium hydroxide reacts with hydrogen sulfide gas to generate sodium sulfide and water. Based on this characteristic, the hydrogen sulfide gas in the glove box exhaust gas can be effectively removed to generate sodium sulfide and water. Sodium sulfide is easily soluble in water and is easy to handle later.

[0045] ③After the exhaust gas in the glove box reacts with the sodium hydroxide solution:

[0046] After the glove box exhaust gas reacts with the sodium hydroxide solution, the remaining exhaust gas will be discharged through the exhaust port of the device, and then the exhaust gas will be treated in the next process.

[0047] The utility model introduces gas into the gas cutting mechanism through the air inlet pipe 1, which can, on the one hand, cut the gas into a number of bubbles and increase the contact area between the gas and the gas absorption liquid; on the other hand, the introduced gas is buffered and transitioned, so the speed of gas introduction can be controlled to ensure stable gas absorption. The utility model can install the air inlet pipe 1 and the exhaust pipe 2 in parallel through the L-shaped pipeline setting, which is convenient for setting the connecting pipe and is conducive to gas reflux circulation treatment; secondly, by setting the pH detection mechanism 4 on the waste liquid pipe 3 at the bottom, it is convenient to detect the treatment status of the gas absorption liquid in real time, and the alkali content in the gas absorption liquid can be adjusted in time to ensure high quality of gas absorption; the utility model is conducive to timely liquid replenishment through the setting of the reserve tank 6, and has good practicality.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A hydrogen sulfide gas absorption device, characterized in that: The invention comprises a body, an air inlet pipe (1), an air outlet pipe (2) and a gas splitting mechanism (7); a reaction pool (5) and a storage pool (6) are arranged inside the body; the storage pool (6) is connected to the reaction pool (5) via a liquid extraction mechanism; a gas absorption liquid is arranged inside the reaction pool (5); one end of the air inlet pipe (1) extends into the bottom of the reaction pool (5) and is connected to the gas splitting mechanism (7); the top of the reaction pool (5) is connected to the air outlet pipe (2); and a plurality of through holes are arranged on the air outlet side of the gas splitting mechanism (7) for cutting the gas into a plurality of bubbles.

2. A hydrogen sulfide gas absorption device according to claim 1, characterized in that: The gas separation mechanism (7) comprises a shell, a cavity is arranged inside the shell, and a plurality of through holes are arranged on at least one side wall of the shell.

3. A hydrogen sulfide gas absorption device according to claim 2, characterized in that: A plurality of through holes arranged in a matrix are arranged on the side wall of the shell.

4. A hydrogen sulfide gas absorption device according to claim 2 or 3, characterized in that: The bottom side wall of the shell is provided with a plurality of through holes, and the bottom of the shell is spaced apart from the bottom of the reaction pool (5).

5. A hydrogen sulfide gas absorption device according to claim 4, characterized in that: A gauze is arranged below the shell to further cut the small bubbles into tiny bubbles.

6. A hydrogen sulfide gas absorption device according to claim 5, characterized in that: The diameter of the through hole is 0.5 mm, and a 500-mesh gauze is arranged below the shell.

7. The hydrogen sulfide gas absorption device according to claim 1, characterized in that: The interior of the body is divided into a reaction tank (5) and a storage tank (6) by a partition, and a liquid extraction mechanism is provided on the top of the body.

8. The hydrogen sulfide gas absorption device according to claim 1, characterized in that: A waste liquid pipe (3) is provided at the bottom of the reaction pool (5), a valve is provided on the waste liquid pipe (3), and a pH detection mechanism (4) is provided at one end of the waste liquid pipe (3) close to the reaction pool (5), and the pH detection mechanism (4) is used to detect the pH value of the gas absorption liquid.

9. A hydrogen sulfide gas absorption device according to claim 1 or 8, characterized in that: An air intake pipe (1) and an exhaust pipe (2) are respectively installed on both sides of the top of the reaction pool (5); the exhaust pipe (2) and the air intake pipe (1) are L-shaped pipes; the air intake pipe (1) and the exhaust pipe (2) are arranged in parallel; a connecting pipe is arranged between the air intake pipe (1) and the exhaust pipe (2); and a valve is arranged on the connecting pipe.

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