Industrial waste gas arsenic hydride purification device and purification method

Abstract

The invention provides an industrial waste gas arsenic hydride purification device and a purification method, and relates to the technical field of arsenic hydride purification, the industrial waste gas arsenic hydride purification device comprises an upper cylinder and a lower cylinder which are arranged up and down, the upper cylinder is communicated with the lower cylinder, a mesh cylinder is slidably mounted in the upper cylinder and can slide between the upper cylinder and the lower cylinder, and the lower cylinder is filled with a solution; the mesh cylinder can slide into the lower cylinder to be soaked and slide into the upper cylinder to separate the upper cylinder from the lower cylinder, and a heating device is arranged on the periphery of the upper cylinder and can heat and dry the soaked mesh cylinder; the activated carbon can be soaked at intervals under the cooperation of the upper cylinder and the lower cylinder, the copper carbide catalyst is generated under the heating effect, the arsenic hydride gas can be absorbed through the copper carbide substance, the poisoning phenomenon of arsenic hydride can be reduced, the arsenic hydride purification efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of arsenic hydrogen purification, and in particular to an arsenic hydrogen purification device and a purification method for industrial waste gas. Background Art

[0002] Arsine is a harmful and toxic pollutant with highly toxic properties. Due to the highly toxic properties of arsenic hydrogen itself, it will damage the catalyst, that is, it will poison the catalyst, which will greatly shorten the service life of the catalyst and reduce the catalytic ability of the catalyst, which will make subsequent exhaust gas purification invest more costs and affect the exhaust gas purification cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an industrial waste gas arsenic purification device and a purification method to solve the problem of high arsenic purification cost.

[0004] Based on the technical problems existing in the background technology, the present invention proposes an industrial waste gas arsenic hydrogen purification device and purification method, including an upper cylinder and a lower cylinder arranged up and down, the upper cylinder and the lower cylinder are connected, a mesh cylinder is slidably installed in the upper cylinder, the mesh cylinder can slide between the upper cylinder and the lower cylinder, the lower cylinder is filled with a solution, the mesh cylinder can slide into the lower cylinder to soak and slide into the upper cylinder to separate the upper cylinder and the lower cylinder, and a heating device is arranged on the periphery of the upper cylinder and can heat and dry the mesh cylinder after soaking.

[0005] Preferably, a plurality of pipes connecting the two ends of the upper cylinder are arranged in the cylinder wall of the upper cylinder, and a zipper device is arranged on the periphery of the upper cylinder, and one end of the zipper device passes through the pipe from the top of the upper cylinder and is connected to the net cylinder.

[0006] Preferably, the wall of the upper cylinder is provided with a hollow interlayer, and the heating device is installed in the interlayer to dry and heat the upper cylinder.

[0007] Preferably, the zipper device includes a driving device, a steel cable and a steering wheel. The zipper device is installed on the side of the upper cylinder, and the steering wheel is installed above the upper cylinder. The steel cable can pass straight through the pipeline through the steering wheel so that one end is connected to the net cylinder, and the other end of the steel cable is connected to the driving device.

[0008] Preferably, the net cylinder comprises a bottom plate and a net fence surrounding it in a circle, the net fence is connected to the bottom plate, the steel cable is connected to the bottom plate, and the diameter of the bottom plate is greater than the inner diameter of the upper cylinder.

[0009] Preferably, the fence slides against the inner wall of the upper cylinder.

[0010] Preferably, the lower barrel is provided with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe is higher than the liquid outlet pipe.

[0011] Preferably, an air outlet pipe is arranged above the upper tube, and an air inlet pipe is arranged on the side of the upper tube.

[0012] A purification method of an industrial waste gas arsenic purification device, using an industrial waste gas arsenic purification device, comprising the following steps:

[0013] S1: Add activated carbon into the mesh cylinder;

[0014] S2: Fill the lower cylinder with copper nitrate solution;

[0015] S3: Immerse the net cylinder in the lower cylinder and slowly lift it to the upper cylinder;

[0016] S4: drying the liquid in the net tube and repeating the soaking and heating steps again to form a Cu / C catalyst;

[0017] S5: Pass arsenic hydrogen into the upper cylinder for purification.

[0018] Compared with the prior art, the industrial waste gas arsenic purification device and purification method proposed by the present invention adopt the above technical scheme to achieve the following technical effects:

[0019] The present invention can soak activated carbon at intervals under the cooperation of the upper cylinder and the lower cylinder and generate a copper carbide catalyst under the action of heating. In the present application, the copper carbide material can be used to absorb the arsenic gas, which can reduce the poisoning phenomenon of arsenic, improve the efficiency of arsenic purification, and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the upper cylinder and the lower cylinder of the present invention.

[0022] In the figure: 1, upper cylinder; 2, lower cylinder; 3, net cylinder; 4, heating device; 11, pipeline; 5, zipper device; 12, interlayer; 51, driving device; 52, steel cable; 53, steering wheel; 31, bottom plate; 32, net fence. DETAILED DESCRIPTION

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] Example

[0026] Please refer to Figure 1-Figure 2 The present invention proposes an industrial waste gas arsenic hydrogen purification device, comprising an upper cylinder 1 and a lower cylinder 2 arranged in an upper and lower manner, the upper cylinder 1 and the lower cylinder 2 are connected, a net cylinder 3 is slidably installed in the upper cylinder 1, the net cylinder 3 can slide between the upper cylinder 1 and the lower cylinder 2, the lower cylinder 2 is filled with a solution, the net cylinder 3 can slide into the lower cylinder 2 to soak and slide into the upper cylinder 1 and separate the upper cylinder 1 and the lower cylinder 2, a heating device 4 is arranged on the periphery of the upper cylinder 1 and can heat and dry the net cylinder 3 after soaking; in this scheme, the upper cylinder 1 and the lower cylinder 2 have different functions, the lower cylinder 2 is used to hold the solution, and the upper cylinder 1 is used to filter industrial Before filtering the arsenic hydrogen in the exhaust gas, activated carbon will be added to the mesh tube 3 first, and a copper salt solution will be injected into the lower tube 2. The mesh tube 3 will be lowered into the lower tube 2 to allow the activated carbon to absorb the copper salt solution, and the mesh tube 3 will be raised to the upper tube 1. The rising speed of the mesh tube 3 is slow, and the excess liquid can be discharged. The mesh tube 3 can generate a Cu / C catalyst that absorbs arsenic hydrogen after being heated by the heating device 4 in the upper tube 1. At this time, the upper tube 1 can directly filter the connected exhaust gas; in this solution, the mesh tube 3 needs to slide against the inner wall of the upper tube 1, and the holes of the mesh tube 3 need to prevent the activated carbon from falling.

[0027] In a specific embodiment, refer to Figure 1 , Figure 2 A plurality of pipes 11 connecting the two ends of the upper cylinder 1 are arranged in the cylinder wall of the upper cylinder 1, and a zipper device 5 is arranged on the periphery of the upper cylinder 1, and one end of the zipper device 5 passes through the pipe 11 from the top of the upper cylinder 1 and is connected to the net cylinder 3; in this scheme, there are four pipes 11 in the present application, and the four pipes 11 are circumferentially distributed in the upper cylinder 1. After the zipper device 5 passes through the pipe 11 to connect the net cylinder 3, the net cylinder 3 can be stably pulled; the zipper device 5 can pull the net cylinder 3 to be raised and lowered through the pipe 11, and when the net cylinder 3 is completely located in the upper cylinder 1, the bottom of the net cylinder 3 can seal the bottom of the pipe 11, which can prevent the exhaust gas from leaking.

[0028] In a specific embodiment, refer to Figure 1 , Figure 2The wall of the upper cylinder 1 is provided with a hollow interlayer 12, and the heating device 4 is installed in the interlayer 12 to dry and heat the upper cylinder 1; in this scheme, the interlayer 12 provided on the upper cylinder 1 is used to install the heating device 4, and the heating device 4 can bake the upper cylinder 1. When the net cylinder 3 has been soaked in the lower cylinder 2, it will be pulled into the upper cylinder 1 through the zipper device 5 for drying to generate Cu / C catalyst; the heating device 4 in the interlayer 12 can prevent liquid vapor from damaging the heating device 4.

[0029] In a specific embodiment, refer to Figure 1 , Figure 2 The zipper device 5 includes a driving device 51, a steel cable 52 and a steering wheel 53. The zipper device 5 is installed on the side of the upper cylinder 1, and the steering wheel 53 is installed above the upper cylinder 1. The steel cable 52 can pass straight through the pipe 11 through the steering wheel 53 so that one end is connected to the net cylinder 3, and the other end of the steel cable 52 is connected to the driving device 51; in this solution, the driving device 51 can pull the steel cable 52 or release the steel cable 52, and the steel cable 52 can be turned through the steering wheel 53, so that the steel cable 52 can pass through the pipe 11 from directly above the pipe 11, thereby reducing friction with the pipe 11.

[0030] In a specific embodiment, refer to Figure 1 , Figure 2 The net cylinder 3 includes a bottom plate 31 and a net fence 32 which is surrounded in a circle. The net fence 32 is connected to the bottom plate 31. The steel cable 52 is connected to the bottom plate 31. The diameter of the bottom plate 31 is larger than the inner diameter of the upper cylinder 1. In this solution, when the steel cable 52 is pulled up, the bottom plate 31 can contact with the bottom of the upper cylinder 1 and seal the bottom of the upper cylinder 1.

[0031] In a specific embodiment, refer to Figure 1 , Figure 2 , the mesh fence 32 slides against the inner wall of the upper cylinder 1; when the mesh fence 32 slides against the upper cylinder 1, the exhaust gas can pass through the mesh cylinder 3 and can prevent the exhaust gas from being discharged from the gap between the mesh cylinder 3 and the upper cylinder 1.

[0032] In a specific embodiment, refer to Figure 1 , Figure 2 The lower tube 2 is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is higher than the liquid outlet pipe, an air outlet pipe is provided above the upper tube 1, and an air inlet pipe is provided on the side of the upper tube 1.

[0033] A purification method of an industrial waste gas arsenic purification device, using an industrial waste gas arsenic purification device, comprising the following steps:

[0034] S1: Add activated carbon into the mesh tube 3; activated carbon is the best carbon material, and has multiple holes in it. The holes can fully retain liquid, which facilitates the occurrence of the entire chemical reaction.

[0035] S2: Fill the lower cylinder 2 with copper nitrate solution; the purpose of the entire reaction is to generate a Cu / C catalyst, in which copper ions need to be provided by copper salts. In this scheme, copper nitrate is used to provide it. Since nitrate ions are more stable, they can facilitate the success of the entire chemical reaction.

[0036] S3: Immerse the net tube 3 in the lower tube 2 and slowly lift it to the upper tube 1; this step will fill the gaps of the activated carbon with the solution.

[0037] S4: Dry the liquid in the net tube 3 and repeat the soaking and heating steps again to form a Cu / C catalyst; during the drying process, the temperature is always maintained at about 180 degrees, the concentration of the entire copper nitrate solution is 2 mol / L, and nitrogen is generated during the entire reaction, which can accelerate the generation of Cu / C and increase the rate.

[0038] S5: passing hydrogen arsenide into the upper cylinder 1 for purification; hydrogen arsenide will be absorbed by the Cu / C catalyst, and the Cu / C catalyst can also resist poisoning caused by hydrogen arsenide, thereby improving the overall absorption efficiency.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An industrial waste gas arsenic purification device, characterized in that: The invention comprises an upper cylinder (1) and a lower cylinder (2) arranged in an upper and lower manner, the upper cylinder (1) and the lower cylinder (2) are connected, a net cylinder (3) is slidably mounted in the upper cylinder (1), the net cylinder (3) can slide between the upper cylinder (1) and the lower cylinder (2), the lower cylinder (2) is filled with a solution, the net cylinder (3) can slide into the lower cylinder (2) to be soaked and then slide into the upper cylinder (1) to separate the upper cylinder (1) and the lower cylinder (2), and a heating device (4) is arranged on the periphery of the upper cylinder (1) to heat and dry the inside of the net cylinder (3) after soaking.

2. The industrial waste gas arsenic purification device according to claim 1, characterized in that: A plurality of pipes (11) are arranged in the wall of the upper cylinder (1) and are connected to both ends of the upper cylinder (1). A zipper device (5) is arranged on the periphery of the upper cylinder (1). One end of the zipper device (5) passes through the pipe (11) from above the upper cylinder (1) and is connected to the net cylinder (3).

3. The industrial waste gas arsenic purification device according to claim 1, characterized in that: The wall of the upper cylinder (1) is provided with a hollow interlayer (12), and the heating device (4) is installed in the interlayer (12) and dries and heats the interior of the upper cylinder (1).

4. The industrial waste gas arsenic purification device according to claim 2, characterized in that: The zipper device (5) comprises a driving device (51), a steel cable (52) and a steering wheel (53). The zipper device (5) is installed on the side of the upper cylinder (1), and the steering wheel (53) is installed on the upper part of the upper cylinder (1). The steel cable (52) can pass through the pipeline (11) straightly through the steering wheel (53) so that one end is connected to the net cylinder (3), and the other end of the steel cable (52) is connected to the driving device (51).

5. The industrial waste gas arsenic purification device according to claim 4, characterized in that: The net cylinder (3) comprises a bottom plate (31) and a net fence (32) surrounding in a circle, the net fence (32) is connected to the bottom plate (31), the steel cable (52) is connected to the bottom plate (31), and the diameter of the bottom plate (31) is greater than the inner diameter of the upper cylinder (1).

6. The industrial waste gas arsine purification device according to claim 5, characterized in that: The net fence (32) slides against the inner wall of the upper cylinder (1).

7. The industrial waste gas arsenic purification device according to claim 1, characterized in that: The lower cylinder (2) is provided with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe is higher than the liquid outlet pipe.

8. The industrial waste gas arsenic purification device according to claim 1, characterized in that: An air outlet pipe is arranged above the upper tube (1), and an air inlet pipe is arranged on the side of the upper tube (1).

9. A method for purifying an industrial waste gas arsenic purification device, using the industrial waste gas arsenic purification device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Adding activated carbon into the net cylinder (3); S2: Filling the lower cylinder (2) with copper nitrate solution; S3: immersing the net cylinder (3) in the lower cylinder (2) and slowly lifting it to the upper cylinder (1); S4: drying the liquid in the net cylinder (3) and repeating the soaking and heating steps again to form a Cu / C catalyst; S5: passing arsenic hydrogen into the upper cylinder (1) for purification.

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