Device for producing hydrogen from hydrocyanic acid tail gas

Abstract

The utility model discloses a device for producing hydrogen from hydrocyanic acid tail gas, which is characterized in that the flow direction of the tail gas is controlled through a distribution valve, dust and impurities are removed through a filter layer, moisture is removed through a drying agent, and then gas except hydrogen in the tail gas is adsorbed by utilizing a multi-layer adsorbent. The system adopts double inner cavities to work alternately, and when one inner cavity adsorbs, the other inner cavity desorbs and regenerates an adsorbent, so that continuous production of hydrogen is ensured. Inner cavity air pressure is stable, and efficient adsorption is ensured. The filter layer, the breathable film, the drying agent and the adsorbent are all convenient to replace and can be replaced by taking out the box body. And efficient treatment of hydrocyanic acid tail gas and continuous production of hydrogen are integrally realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen preparation, in particular to a hydrogen production device from hydrocyanic acid tail gas. Background Art

[0002] Many industrial processes generate tail gases containing valuable gases, such as hydrogen in hydrocyanic acid tail gas. Directly discharging these tail gases not only wastes resources but also pollutes the environment. Pressure swing adsorption units can effectively recover valuable gases from these tail gases, achieving resource reuse and environmental protection.

[0003] Traditional gas adsorption devices typically consist of multiple connected adsorption towers. This single-channel design can cause system downtime during equipment failure or maintenance, impacting production continuity. Traditional gas adsorption devices also present several inconveniences when it comes to adsorbent replacement, such as being complex, time-consuming, and requiring specialized personnel. Therefore, designing a dual-channel gas adsorption device that facilitates adsorbent replacement is of great practical significance. Utility Model Content

[0004] The purpose of the utility model is to provide a hydrogen production device for hydrocyanic acid tail gas, which can realize the continuous production of hydrogen and make the replacement of adsorbent simpler and more time-saving.

[0005] In order to solve the above technical problems, the present invention adopts the following solutions:

[0006] A hydrogen production device from hydrocyanic acid tail gas includes a device body, a partition is arranged perpendicular to the bottom in the inner cavity of the device body to separate the device body into two inner cavities, a distribution assembly is installed on the top upper surface of the device body and is connected to the two inner cavities of the device body, multiple layers of load-bearing plates parallel to the bottom of the device body are arranged in both inner cavities, openings for the passage of a pumping box assembly are opened on the side of the device body at positions corresponding to the load-bearing plates, the pumping box assembly is placed on the load-bearing plates, gas outlet assemblies are arranged on the side and bottom of the bottom of the device body, and a support is also arranged at the bottom of the device body.

[0007] The inner cavity of the device body is divided into two by a partition to form two inner cavity channels. At the same time, the distribution component can stagger the time of injecting hydrocyanic acid tail gas into the two inner cavity channels, so that one channel is adsorbed and the other channel is desorbed. Load-bearing plates are set in the two inner cavities, and the load-bearing plates divide the inner cavity into sections. The opening opened at the position of the load-bearing plate on the side of the device body corresponding to the position of the load-bearing plate can enable the extraction box assembly to be placed in the device body, making it convenient to clean or replace the device or substance in the extraction box assembly.

[0008] Further,

[0009] The box extraction assembly includes a box body, a handle, a coarse filter, and a breathable membrane. A handle is installed on one side of the box body. The bottom of the box body is a coarse filter. A layer of breathable membrane with the same size as the coarse filter is laid on the coarse filter. A sealing ring is provided at the place where the box body contacts the opening on the side of the device body. The number of box extraction assemblies is the same as the number of load-bearing plates.

[0010] Further,

[0011] The objects arranged or placed in the pumping box components from top to bottom in the device body are different. The first layer of the pumping box components is equipped with a filter layer, the second layer of the pumping box components is filled with a desiccant, and the other pumping box components are filled with an adsorbent.

[0012] Further,

[0013] The distribution assembly includes a connecting pipe and a distribution valve. The distribution valve is installed on the upper surface of the device body, and connecting pipes are installed on the left and right sides of the distribution valve. The distribution valve is connected to the two inner cavities in the device body through the connecting pipes.

[0014] Further,

[0015] The air outlet assembly includes a target air outlet pipe, an impurity air outlet pipe, and a control valve. The target air outlet pipe is arranged at a position near the bottom of the side of the device body and lower than the height of the last load-bearing plate from top to bottom. The impurity air outlet pipe is arranged at the bottom of the device body. Control valves are provided on both the target air outlet pipe and the impurity air outlet pipe.

[0016] Further,

[0017] The load-bearing plate is provided with a plurality of small holes penetrating the load-bearing plate.

[0018] Further,

[0019] A display screen is also installed on the side of the device body, and air pressure sensors are installed in the two inner cavities of the device body. The air pressure sensors are electrically connected to the display screen.

[0020] The utility model has the beneficial effects:

[0021] 1. Use a partition to divide the inner cavity of the device into two, forming two inner cavities, namely dual channels. Then use a distribution valve to regulate the gas so that one of the two inner cavities is in the adsorption stage and the other is in the desorption stage, working alternately to achieve uninterrupted hydrogen production.

[0022] 2. The load-bearing plate and drawer assembly are set to form a drawer structure, which makes it very easy to replace the desiccant, adsorbent, filter layer and breathable membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a side view of the utility model;

[0025] Figure 3 This is the top view of the bearing plate;

[0026] Figure 4 This is the front view of the box assembly;

[0027] Figure 5 This is a bottom view of the drawer assembly box.

[0028] The following are the descriptions of the reference numerals:

[0029] 1-Device body, 2-Distribution assembly, 20-Connecting pipe, 21-Distribution valve, 3-Partition, 4-Load-bearing plate, 40-Small hole, 5-Box extraction assembly, 50-Box body, 51-Handle, 52-Coarse filter, 53-Breathable membrane, 6-Filter layer, 7-Desiccant, 8-Adsorbent, 9-Air outlet assembly, 90-Target outlet pipe, 91-Impurity outlet pipe, 92-Control valve, 10-Pillar, 11-Air pressure sensor. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "opened," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] Example

[0034] See also Figures 1 to 5:

[0035] A hydrogen production device from hydrocyanic acid tail gas includes a device body 1. A partition 3 is provided in the inner cavity of the device body 1 perpendicular to the bottom to separate the device body 1 into two inner cavities. A distribution component 2 is installed on the top upper surface of the device body 1 and is connected to the two inner cavities of the device body 1. Multiple layers of load-bearing plates 4 parallel to the bottom of the device body 1 are provided in both inner cavities. An opening for a pumping box component 5 to pass through is provided on the side of the device body 1 at a position corresponding to the load-bearing plate 4. The pumping box component 5 is placed on the load-bearing plate 4. An air outlet component 9 is provided on the side and bottom of the bottom of the device body 1. A support 10 is also provided at the bottom of the device body 1.

[0036] The inner cavity of the device body 1 is divided into two by the partition 3 in order to form a dual channel. The hydrogen cyanide tail gas can be injected into the two inner cavities in different time periods through the distribution component 2, so that the two inner cavities form one for adsorption operation and the other for desorption operation. The extraction box component 5 can be placed on the load-bearing plate 4, and the inner cavity is segmented to form multiple adsorption sections. The openings are opened to facilitate the removal and insertion of the extraction box component 5.

[0037] Further,

[0038] The extraction box assembly 5 includes a box body 50, a handle 51, a coarse filter 52, and a breathable membrane 53. The handle 51 is installed on one side of the box body 50. The bottom of the box body 50 is a coarse filter 52. A layer of breathable membrane 53 of the same size as the coarse filter 52 is laid on the coarse filter 52. A sealing ring is provided where the box body 50 contacts the opening on the side of the device body 1. The number of extraction box assemblies 5 is the same as that of the load-bearing plate 4. The handle 51 is installed on the side of the box body 50 to make it easier for the operator to extract the box body 50 from the device. The bottom of the box body 50 is a coarse filter 52, which serves as the bottom surface and does not affect the flow of gas. The breathable membrane 53 laid on the coarse filter 52 can further remove dust and particles. The sealing ring is provided to prevent gas leakage.

[0039] Further,

[0040] The contents of the drawer assemblies 5 from top to bottom within the device body 1 vary. The first drawer assembly 5 is equipped with a filter layer 6, the second drawer assembly 5 is equipped with a desiccant 7, and the remaining drawer assemblies 5 are equipped with an adsorbent 8. The filter layer 6 blocks dust and particulate matter in the hydrocyanic acid exhaust gas, while the desiccant 7 removes moisture from the hydrocyanic acid exhaust gas to prevent moisture from affecting the adsorbent and reducing its adsorption effect.

[0041] Further,

[0042] The distribution assembly 2 includes a connecting pipe 20 and a distribution valve 21. The distribution valve 21 is mounted on the upper surface of the device body 1, with connecting pipes 20 installed on both sides of the distribution valve 21. The distribution valve 21 is connected to two inner cavities in the device body 1 through the connecting pipes 20. The connecting pipes 20 connect the distribution valve 21 to the two inner cavities, allowing the hydrocyanic acid tail gas to enter the two inner cavities.

[0043] Further,

[0044] The gas outlet assembly 9 includes a target gas outlet pipe 90, an impurity gas outlet pipe 91, and a control valve 92. The target gas outlet pipe 90 is located near the bottom of the left and right sides of the device body 1 and below the height of the last load-bearing plate 4 from the top to the bottom. The impurity gas outlet pipe 91 is located at the bottom of the device body 1. Control valves 92 are installed on both the target gas outlet pipe 90 and the impurity gas outlet pipe 91. The target gas outlet pipe 90 is used to collect the target gas, and the impurity gas outlet pipe 91 is used to transport other gases. The control valve 92 controls the opening and closing of the target gas outlet pipe 90 and the impurity gas outlet pipe 91.

[0045] Further,

[0046] The load-bearing plate 4 has a plurality of small holes 40 that penetrate the load-bearing plate 4. The arrangement of the small holes 40 enables gas to pass through the load-bearing plate 4.

[0047] Further,

[0048] A display screen is also installed on the side of the device body 1. The two inner cavities in the device body 1 are both equipped with air pressure sensors 11, which are electrically connected to the display screen. The display screen can display the air pressure values ​​detected by the air pressure sensors 11 in the two inner cavities.

[0049] The usage of this utility model:

[0050] First, the distribution valve 21 is adjusted to a state where gas on one side can pass through and gas on the other side cannot pass through. Then, the compressor is used to compress the hydrocyanic acid tail gas and deliver it to the distribution valve 21. The hydrocyanic acid tail gas enters the inner cavity on one side through the connecting pipe 20 of the distribution valve 21.

[0051] The hydrocyanic acid tail gas entering the inner cavity first passes through the filter layer 6, which can remove dust and other impurities in the hydrocyanic acid tail gas; the hydrocyanic acid tail gas then passes through the desiccant 7 to remove moisture in the hydrocyanic acid tail gas, and then the gas other than hydrogen in the hydrocyanic acid tail gas is adsorbed by the multi-layer adsorbent, and the control valve 92 on the target outlet pipe 90 is opened to collect the hydrogen. During the adsorption process, the hydrocyanic acid tail gas needs to enter the inner cavity at a flow rate that maintains a stable pressure in the inner cavity, ensuring that the pressure value detected by the air pressure sensor in the inner cavity tends to be stable on the display screen. After a certain period of time, the distribution valve 21 changes its state to transport the hydrocyanic acid tail gas to the inner cavity on the other side, stops transporting to the upper inner cavity, and the upper inner cavity enters the desorption stage, and the control valve 92 on the target outlet pipe 90 is closed, and the control valve 92 on the impurity outlet pipe 91 is opened to collect and process the desorbed gas, and the inner cavity on the other side repeats the operation of the upper inner cavity. When one of the two inner cavities is performing adsorption, the other is performing decompression and adsorption to achieve regeneration of the adsorbent. The two inner cavities alternately perform adsorption and desorption to achieve uninterrupted production of hydrogen.

[0052] If the filter layer 6 , the breathable membrane 53 , the desiccant 7 , and the adsorbent 8 need to be replaced, the box 50 only needs to be taken out of the device body 1 by holding the handle.

[0053] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hydrogen production device for hydrocyanic acid tail gas, comprising a device body (1), characterized in that: A partition (3) is provided in the inner cavity of the device body (1) perpendicular to the bottom thereof, which divides the device body (1) into two inner cavities. A distribution assembly (2) is installed on the top upper surface of the device body (1). Multiple layers of bearing plates (4) are provided in parallel with the bottom of the device body (1) and are connected to the two inner cavities of the device body (1). An opening for a pumping box assembly (5) to pass through is provided on the side of the device body (1) at a position corresponding to the bearing plate (4). The pumping box assembly (5) is placed on the bearing plate (4). An air outlet assembly (9) is provided on the side and bottom of the bottom of the device body (1). A support (10) is also provided at the bottom of the device body (1).

2. A hydrogen production device from hydrocyanic acid tail gas according to claim 1, characterized in that: The box extraction assembly (5) comprises a box body (50), a handle (51), a coarse filter (52), and a breathable membrane (53). The handle (51) is installed on one side of the box body (50). The bottom of the box body (50) is a coarse filter (52). A layer of breathable membrane (53) of the same size as the coarse filter (52) is laid on the coarse filter (52). A sealing ring is provided at the place where the box body (50) contacts the opening on the side of the device body (1). The number of the box extraction assembly (5) is the same as that of the load-bearing plate (4).

3. A hydrogen production device from hydrocyanic acid tail gas according to claim 2, characterized in that: The objects arranged or placed in the pumping box components (5) from top to bottom in the device body (1) are different. The first pumping box component (5) is installed with a filter layer (6), the second pumping box component (5) is placed with a desiccant (7), and the other pumping box components (5) are all added with an adsorbent (8).

4. A hydrogen production device from hydrocyanic acid tail gas according to claim 1, characterized in that: The distribution assembly (2) comprises a connecting pipe (20) and a distribution valve (21). The distribution valve (21) is mounted on the upper surface of the device body (1), and connecting pipes (20) are mounted on the left and right sides of the distribution valve (21). The distribution valve (21) is connected to two inner cavities in the device body (1) through the connecting pipes (20).

5. The hydrogen production device from hydrocyanic acid tail gas according to claim 1, characterized in that: The gas outlet assembly (9) comprises a target gas outlet pipe (90), an impurity gas outlet pipe (91), and a control valve (92); the target gas outlet pipe (90) is arranged at a position close to the bottom of the side of the device body (1) and lower than the height of the last load-bearing plate (4) from top to bottom; the impurity gas outlet pipe (91) is arranged at the bottom of the device body (1); and the target gas outlet pipe (90) and the impurity gas outlet pipe (91) are both provided with a control valve (92).

6. The hydrogen production device from hydrocyanic acid tail gas according to claim 1, characterized in that: The load-bearing plate (4) is provided with a plurality of small holes (40) penetrating the load-bearing plate (4).

7. The hydrogen production device from hydrocyanic acid tail gas according to claim 1, characterized in that: A display screen is also installed on the side of the device body (1), and air pressure sensors (11) are installed in the two inner cavities of the device body (1), and the air pressure sensors (11) are electrically connected to the display screen.

Images