A carbon monoxide gas oxidation dehydrogenation device

Abstract

The invention discloses a carbon monoxide gas oxidation and dehydrogenation device, which belongs to the field of carbon monoxide treatment. The device comprises a hollow shell, an air intake hood fixedly connected to the upper end of the hollow shell, a bottom plate fixedly connected to the inner wall of the hollow shell and an exhaust port 1 opened at the lower end of the bottom plate. The inner wall of the hollow shell is also fixedly connected with a partition 1 and a partition 2 located below the partition 1, and a flow cavity is provided between the upper part of the partition 1 and the air intake hood; a cooling air ring can discharge oxygen to the inner wall of a reaction through hole, ensuring uniform distribution of oxygen on the inner wall of the reaction through hole, avoiding oxygen concentration in a certain area, thereby improving the efficiency of the catalytic reaction; at the same time, a mixed gas of carbon monoxide and hydrogen enters the hollow rotating rod, and is discharged from an inclined exhaust port 3 and blown to the inner wall of the reaction through hole, ensuring that the catalytic reaction is carried out uniformly in the entire catalyst, avoiding a reduction in reaction efficiency due to insufficient oxygen or poor airflow in a local area, and ensuring that the reactants can be fully converted.

Description

Technical Field

[0001] The present invention relates to the field of carbon monoxide treatment, and more particularly to a carbon monoxide gas oxidative dehydrogenation device. Background Art

[0002] Carbon monoxide can be separated and extracted from various mixed gases containing carbon monoxide. The raw gases that can be used to separate carbon monoxide in industry include: synthesis gas from natural gas and petroleum conversion, water gas, semi-water gas, and tail gas from steel plants, calcium carbide plants, and yellow phosphorus plants. Under the premise of taking into account the yield of carbon monoxide, the hydrogen content of carbon monoxide separated from synthesis gas can usually reach more than 1%. However, studies have shown that the presence of hydrogen will reduce the activity of the catalyst in the subsequent carbon monoxide coupling reaction until the reaction cannot proceed. Therefore, it is necessary to dehydrogenate carbon monoxide.

[0003] In the prior art, a mixed gas of carbon monoxide and hydrogen is subjected to oxidative dehydrogenation treatment by using a catalyst with platinum or palladium as an active component. For example, a prior patent (publication number CN102649563B) discloses a method of catalytic oxidative dehydrogenation of carbon monoxide gas and a prior patent (publication number CN102649570B) discloses a method of catalytic oxidative dehydrogenation of carbon monoxide gas. Both of them use a catalyst treatment method to achieve oxidative dehydrogenation treatment of a mixed gas of carbon monoxide and hydrogen.

[0004] Although dehydrogenation can be achieved, the interior of the catalyst skeleton is mostly a honeycomb structure. When the carbon monoxide and hydrogen mixed gas passes through the skeleton, the gas flow follows the boundary layer effect in fluid dynamics, that is, the gas flow rate is low near the wall, and at a farther distance, the flow rate is higher. The gas with a high flow rate may have difficulty contacting the catalyst surface, resulting in a lower reaction rate. In other words, in the honeycomb structure, when the gas passes through the skeleton, part of the gas will react along the inner wall, but some of the gas may not effectively contact the catalyst surface due to the high flow rate. This phenomenon is called fluid hysteresis or bias flow, which will lead to insufficient conversion of reactants in catalytic reactions. Summary of the invention

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a carbon monoxide gas oxidative dehydrogenation device.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A carbon monoxide gas oxidative dehydrogenation device comprises a hollow shell, an air inlet hood fixedly connected to the upper end of the hollow shell, a bottom plate fixedly connected to the inner wall of the hollow shell, and an exhaust port 1 opened at the lower end of the bottom plate, the inner wall of the hollow shell is also fixedly connected to a partition 1 and a partition 2 located below the partition 1, and a flow cavity is provided between the upper part of the partition 1 and the air inlet hood, and an oxidative dehydrogenation unit is also connected inside the hollow shell;

[0008] The oxidative dehydrogenation unit is located between the bottom plate and the partition plate 2, and the oxidative dehydrogenation unit includes a partition plate 3 fixedly connected to the inner wall of the hollow shell and located above the bottom plate, an exhaust port 2 opened inside the partition plate 3, a catalyst skeleton connected to the upper end of the partition plate 3, a plurality of reaction through holes opened inside the catalyst skeleton, a hollow rotating rod with one end rotatably connected to the lower end of the partition plate 2 and the other end rotatably connected to the upper end of the partition plate 3, a plurality of exhaust ports 3 obliquely opened outside the hollow rotating rod, and a plurality of cooling air rings uniformly distributed in a linear array and fixed to the inner wall of the reaction through hole;

[0009] The upper end of the second partition is fixedly connected to a rotary joint and a gas delivery pump, and the inner tube of the rotary joint is inserted into the hollow rotating rod and fixed to the hollow rotating rod. The output end of the gas delivery pump is connected to the input end of the rotary joint, and the input end passes through the first partition and enters the flow cavity.

[0010] Furthermore, the catalyst skeleton is internally connected with a plurality of gas pipelines, the upper end of the partition plate 2 is provided with a plurality of pipeline interfaces 1, the outer surface of the hollow shell is provided with a plurality of pipeline interfaces 2, and both ends of the gas pipeline are respectively connected with the cooling air ring and the pipeline interface 1.

[0011] Furthermore, a one-way valve is fixedly connected to the inner wall of the hollow rotating rod, and the one-way valve is located below the inner tube of the rotating joint.

[0012] Furthermore, a transverse heat uniforming unit is connected to the upper and lower ends of the partition plate 2, and the transverse heat uniforming unit includes a motor 1 fixedly connected to the upper end of the partition plate 2, a gear 1 rotatably connected to the lower end of the partition plate 2, and a gear 2 rotatably connected to the lower end of the partition plate 2 and fixedly sleeved on the outside of the hollow rotating rod, and gear 1 is meshed with gear 2, and the output shaft of the motor 1 passes through the partition plate 2 and is fixedly connected to gear 1.

[0013] Furthermore, a plurality of fixing rods are fixedly connected to the upper end of the partition three, and a fixing ring three is fixedly connected to the upper end of the plurality of fixing rods, a fixing seat is fixedly connected to the outside of the hollow rotating rod, and a movable block is movably inserted inside the fixing seat, inclined surfaces are provided on both sides of the movable block, a spring is connected inside the fixing seat, and the two ends of the spring are respectively connected to the inner wall of the fixing seat and one side of the movable block.

[0014] Furthermore, a longitudinal heat uniforming unit is also connected to the inside of the hollow shell, and the longitudinal heat uniforming unit includes a motor 2 fixedly connected to the upper end of the partition 2, a screw rod screwed inside the catalyst skeleton, and a guide rod movably inserted inside the catalyst skeleton, and the two ends of the screw rod are rotatably connected to the lower end of the partition 2 and the upper end of the partition 3 respectively, the two ends of the guide rod are fixedly connected to the lower end of the partition 2 and the upper end of the partition 3 respectively, and the output shaft of the motor 2 passes through the partition 2 and is fixedly connected to one end of the screw rod.

[0015] Furthermore, a plurality of the cooling air rings are connected to inner walls with drainage components, and the drainage components include a fixed ring 1 fixedly connected to the inner wall of the cooling air ring, a ceramic fiber sleeve and a guide rod fixedly connected to a lower end of the fixed ring, a fixed ring 2 fixedly connected to the other end of the ceramic fiber sleeve and movably connected to the outside of the guide rod, a rotating seat rotatably connected to the lower end of the fixed ring 2, and a plurality of connecting parts fixedly connected to the inner wall of the rotating seat, and the other end of the connecting part is fixedly connected to the outer surface of the rotating rod.

[0016] Furthermore, a carbonization cleaning unit is connected to the lower end of the bottom plate, and the carbonization cleaning unit includes a venturi mixing section and an air compressor fixedly connected to the lower end of the bottom plate, the output end of the air compressor is connected to the throat of the venturi mixing section, a rotary joint 2 is fixedly connected to the lower end of the partition three, and the inner tube of the rotary joint 2 passes through the partition three and is inserted into the interior of the hollow rotating rod, and the input end of the rotary joint 2 is connected to the output end of the venturi mixing section through an infusion pipe.

[0017] Furthermore, a second one-way valve is connected to the inside of the hollow rotating rod, and the second one-way valve is located above the inner tube of the second rotating joint.

[0018] Furthermore, a cooling channel is provided inside the catalyst skeleton, and a cooling channel interface connected to the cooling channel is provided at the lower end of the catalyst skeleton. The cooling channel interface passes through partition three and extends downward. A pipe joint is provided inside the bottom plate, and the pipe joint is connected to the extended end of the cooling channel interface through a telescopic pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) This scheme is provided with a plurality of cooling air rings on the inner wall of the reaction through hole. The cooling air rings can discharge oxygen to the inner wall of the reaction through hole, ensure the uniform distribution of oxygen on the inner wall of the reaction through hole, avoid the concentration of oxygen in a certain area, thereby improving the efficiency of the catalytic reaction. At the same time, the mixed gas of carbon monoxide and hydrogen enters the hollow rotating rod, and is discharged from the inclined exhaust port three and blown to the inner wall of the reaction through hole, increasing the contact area between the gas and the catalyst and the turbulent effect, which helps to break the boundary layer of the gas flow and make the gas more fully mixed. Through this gas flow design, the gas not only flows in parallel, but also interacts with the inner wall of the reaction through hole, forming an effect similar to a vortex. This turbulence can accelerate the mixing of the gas and avoid dead zones (areas with extremely low flow velocity), ensuring that the catalytic reaction is carried out evenly throughout the catalyst, avoiding the reduction of reaction efficiency due to insufficient oxygen or poor air flow in local areas, and ensuring that the reactants can be fully converted.

[0021] (2) This scheme is provided with a transverse heat-uniformizing unit. When motor 1 is working, it can drive the hollow rotating rod to rotate through gear 1 and gear 2. The rotation of the hollow rotating rod can help break the static area of ​​the airflow inside the reaction through hole and reduce the fouling or deposition of substances on the inner wall of the reaction through hole. The rotation of the hollow rotating rod can promote more uniform gas distribution and avoid the phenomenon of airflow stagnation or dead zone that may occur in traditional designs. As the hollow rotating rod rotates, the gas flow direction and speed will change dynamically, further promoting the contact between the gas and the catalyst surface. At the same time, the rotation of the hollow rotating rod can help adjust the heat distribution on the inner wall of the through hole to prevent the catalyst from being deactivated or causing side reactions due to excessively high temperatures in certain areas due to excessive reactions.

[0022] (3) This scheme is provided with a longitudinal uniform heating unit, through which the height of the catalyst skeleton can be adjusted so that the catalyst skeleton can move up and down. The up and down movement of the catalyst skeleton can dynamically change the contact area of ​​the gas flow on the inner wall of the reaction through hole, which may help to optimize the contact between the gas flow and the catalyst. In different operation stages, adjusting the position of the catalyst skeleton can help better distribute the gas flow and increase the reaction rate. At the same time, it can also help to achieve a more uniform temperature distribution in the entire reaction zone, so that the high temperature area is no longer limited to the circumferential area of ​​the inner wall of the reaction through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a cross-sectional view of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the pipeline interface 2 of the present invention;

[0026] Figure 4It is a schematic diagram of the cooling channel interface, telescopic pipe, pipe joint and transverse heat uniforming unit structure of the present invention;

[0027] Figure 5 It is a structural schematic diagram of a one-way valve of the present invention;

[0028] Figure 6 It is a schematic diagram of the third structure of the fixing rod and the fixing ring of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the drainage component of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the fixed seat and the movable block of the present invention;

[0031] Fig. 9 For the present invention Figure 6 A schematic diagram of the structure enlargement in the middle;

[0032] Fig.10 It is a cross-sectional view of the fixing seat of the present invention.

[0033] Description of the numbers in the figure:

[0034] 1. Hollow shell; 11. Flow cavity; 2. Air inlet cover; 3. Bottom plate; 31. Exhaust port 1; 32. Telescopic pipe; 33. Pipe joint; 4. Partition 1; 5. Partition 2; 51. Gas delivery pump; 52. Rotary joint 1; 6. Oxidative dehydrogenation unit; 61. Catalyst skeleton; 611. Reaction through hole; 612. Cooling channel interface; 62. Partition 3; 621. Exhaust port 2; 63. Hollow rotating rod; 64. Exhaust port 3; 65. Cooling air ring; 66. Gas pipeline; 67. Pipe interface 1; 68. Pipe interface 2; 69. One-way valve 1; 7. Horizontal 1. longitudinal heat-uniform unit; 71. motor 1; 72. gear 1; 73. gear 2; 74. fixed seat; 75. movable block; 76. fixed rod; 77. fixed ring 3; 8. longitudinal heat-uniform unit; 81. motor 2; 82. screw rod; 83. guide rod; 84. drainage assembly; 841. fixed ring 1; 842. ceramic fiber sleeve; 843. fixed ring 2; 844. rotating seat; 845. connecting part; 846. guide rod; 9. carbonization cleaning unit; 91. venturi mixing part; 92. infusion pipeline; 93. air compressor; 94. rotary joint 2; 95. check valve 2. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 10 A carbon monoxide gas oxidative dehydrogenation device comprises a hollow shell 1, an air inlet hood 2 fixedly connected to the upper end of the hollow shell 1, a bottom plate 3 fixedly connected to the inner wall of the hollow shell 1 and an exhaust port 31 opened at the lower end of the bottom plate 3, a partition 4 and a partition 5 located below the partition 4 are also fixedly connected to the inner wall of the hollow shell 1, and a flow cavity 11 is provided between the upper part of the partition 4 and the air inlet hood 2, and an oxidative dehydrogenation unit 6 is also connected to the inside of the hollow shell 1;

[0037] The oxidative dehydrogenation unit 6 is located between the bottom plate 3 and the partition plate 2 5, and the oxidative dehydrogenation unit 6 includes a partition plate 3 62 fixedly connected to the inner wall of the hollow shell 1 and located above the bottom plate 3, an exhaust port 2 621 opened inside the partition plate 3 62, a catalyst skeleton 61 connected to the upper end of the partition plate 3 62, a plurality of reaction through holes 611 opened inside the catalyst skeleton 61, a hollow rotating rod 63 with one end rotatably connected to the lower end of the partition plate 2 5 and the other end rotatably connected to the upper end of the partition plate 3 62, a plurality of exhaust ports 3 64 obliquely opened outside the hollow rotating rod 63, and a plurality of cooling air rings 65 evenly distributed in a linear array and fixed to the inner wall of the reaction through hole 611;

[0038] A rotary joint 52 and a gas delivery pump 51 are fixedly connected to the upper end of the partition 2 5, and the inner tube of the rotary joint 52 is inserted into the hollow rotating rod 63 and fixed to the hollow rotating rod 63, and the output end of the gas delivery pump 51 is connected to the input end of the rotary joint 52, and the input end passes through the partition 4 and enters the flow cavity 11.

[0039] The catalyst skeleton 61 is internally connected with a plurality of gas pipelines 66, the upper end of the partition plate 25 is provided with a plurality of pipeline interfaces 67, the outer surface of the hollow shell 1 is provided with a plurality of pipeline interfaces 2 68, and the pipeline interface 2 68 is connected to the pipeline interface 1 67 via a connecting pipeline. The connecting pipeline is not shown in the drawings of the specification of the present application, but it is a commonly used method of transporting gas and will not be described here. The two ends of the gas pipeline 66 are respectively connected to the cooling air ring 65 and the pipeline interface 1 67.

[0040] A one-way valve 69 is fixedly connected to the inner wall of the hollow rotating rod 63 , and the one-way valve 69 is located below the inner tube of the rotating joint 52 .

[0041] By adopting the above technical scheme, the air inlet hood 2 is connected to the air supply pipe (a pipe for conveying a mixture of carbon monoxide and hydrogen), the exhaust port 31 is connected to the pipe of the negative pressure device, the gas inside the hollow shell 1 can be extracted through the negative pressure device, the pipeline interface 2 68 is connected to the pipe for conveying oxygen, the carbon monoxide and hydrogen mixed gas enters the hollow shell 1 and first reaches the flow cavity 11, the gas delivery pump 51 pumps the mixed gas in the flow cavity 11 into the rotary joint 1 52, the mixed gas is discharged from the inner tube of the rotary joint 1 52 and enters the hollow rotating rod 63, the mixed gas is discharged from the exhaust port 3 64 and blown onto the inner wall of the reaction through hole 611, the mixed gas can react with the catalyst (the catalyst skeleton 61 is a loaded platinum, rhodium or other precious metal catalyst, the metal component is loaded on the carrier of the catalyst, so as to improve the dispersion and thermal stability of the metal component) on the inner wall of the reaction through hole 611, and oxygen enters from the pipeline interface 2 68 The oxygen enters the pipeline interface 67, enters the gas pipeline 66 from the pipeline interface 67, and enters the cooling air ring 65 from the gas pipeline 66, is discharged from the outlet at the lower end of the cooling air ring 65 and blown vertically to the inner wall of the reaction through hole 611, ensuring that the oxygen is evenly distributed on the inner wall of the reaction through hole 611, avoiding the concentration of oxygen in a certain area, thereby improving the efficiency of the catalytic reaction, and is mixed with the mixed gas discharged from the inclined exhaust port 3 64 and blown to the inner wall of the reaction through hole 611 and reacts with the catalyst (the basic reaction of hydrogen oxidation and dehydrogenation treatment is to promote the oxidation reaction of hydrogen through the catalyst surface, usually involving the reaction of hydrogen and oxygen (or air) to generate water), which can increase the contact area between the gas and the catalyst and the turbulent effect, help to break the boundary layer of the gas flow, and make the gas more fully mixed. Through this gas flow design, the gas not only flows in parallel, but also interacts with the inner wall of the reaction through hole 611 to form an effect similar to a vortex. This turbulence can accelerate the mixing of gases and avoid dead zones (areas with extremely low flow rates), ensuring that the catalytic reaction proceeds evenly within the hollow shell 1, avoiding reduced reaction efficiency due to insufficient oxygen or poor airflow in local areas, and ensuring that the reactants can be fully converted.

[0042] like Figure 2-Figure 4 , Figure 6 , Figure 8-Figure 10 As shown, the upper and lower ends of the partition 25 are connected with a transverse heat equalizing unit 7, and the transverse heat equalizing unit 7 includes a motor 1 71 fixedly connected to the upper end of the partition 25, a gear 1 72 rotatably connected to the lower end of the partition 25, and a gear 2 73 rotatably connected to the lower end of the partition 25 and fixedly sleeved on the outside of the hollow rotating rod 63, and the gear 1 72 is meshed with the gear 2 73, and the output shaft of the motor 1 71 passes through the partition 25 and is fixedly connected to the gear 1 72.

[0043] A plurality of fixing rods 76 are fixedly connected to the upper end of the partition three 62, and a fixing ring three 77 is fixedly connected to the upper end of the plurality of fixing rods 76. The outside of the hollow rotating rod 63 is fixedly connected to a fixing seat 74, and a movable block 75 is movably inserted inside the fixing seat 74. Inclined surfaces are provided on both sides of the movable block 75. A spring is connected inside the fixing seat 74, and the two ends of the spring are respectively connected to the inner wall of the fixing seat 74 and one side of the movable block 75.

[0044] By adopting the above technical solution, the motor 1 71 drives the gear 1 72 to rotate, the gear 1 72 rotates to drive the gear 2 73 to rotate, the gear 2 73 rotates to drive the hollow rotating rod 63 to rotate, and the hollow rotating rod 63 rotates to enable the exhaust port 3 64 to rotate and discharge the mixed gas. The rotation of the hollow rotating rod 63 can help break the static area of ​​the airflow inside the reaction through hole 611, reduce the fouling or deposition of substances on the inner wall of the reaction through hole 611, and the rotation of the hollow rotating rod 63 can promote more uniform gas distribution, avoiding the airflow retention or dead zone phenomenon that may occur in the traditional design. With the rotation of the hollow rotating rod 63, the gas flow direction and speed will change dynamically, further promoting the contact between the gas and the catalyst surface. At the same time, rotating the hollow rotating rod 63 can help adjust the reaction through hole 611. The heat distribution of the wall can prevent certain areas from being overheated due to excessively intense reactions, causing catalyst deactivation or side reactions. At the same time, when the hollow rotating rod 63 rotates, it can also drive the fixed seat 74 and the movable block 75 to rotate. When the movable block 75 rotates and contacts the outer surface of the fixed rod 76, the fixed rod 76 first contacts the inclined surface of the movable block 75, and the fixed rod 76 pushes the movable block 75 into the fixed seat 74 along the inclined surface. When the fixed rod 76 is separated from the movable block 75, the spring inside the fixed seat 74 can push the movable block 75 out. The contact between the movable block 75 and the fixed rod 76 can produce slight vibration, which is transmitted to the hollow rotating rod 63. The vibration of the hollow rotating rod 63 can indirectly increase the residence time of the gas in the reaction through hole 611 by increasing the degree of turbulence of the gas flow. This may cause the gas to contact the catalyst surface for a longer time, thereby promoting the reaction rate, and at the same time, it can also break the originally relatively regular flow path, making the airflow more random, thereby improving the mixing and exchange of airflows between different regions.

[0045] like Figure 4 , Figure 6 and Figure 7 As shown, the interior of the hollow shell 1 is also connected to a longitudinal uniform heating unit 8, and the longitudinal uniform heating unit 8 includes a motor 2 81 fixedly connected to the upper end of the partition 2 5, a screw 82 screwed into the inside of the catalyst skeleton 61, and a guide rod 83 movably inserted into the inside of the catalyst skeleton 61, and the two ends of the screw 82 are rotatably connected to the lower end of the partition 2 5 and the upper end of the partition 3 62 respectively, the two ends of the guide rod 83 are fixedly connected to the lower end of the partition 2 5 and the upper end of the partition 3 62 respectively, and the output shaft of the motor 2 81 passes through the partition 2 5 and is fixedly connected to one end of the screw 82.

[0046] The inner walls of the multiple cooling air rings 65 are all connected to a drainage assembly 84, and the drainage assembly 84 includes a fixed ring 841 fixedly connected to the inner wall of the cooling air ring 65, a ceramic fiber sleeve 842 and a guide rod 846 fixedly connected to the lower end of the fixed ring 841, a fixed ring 843 fixedly connected to the other end of the ceramic fiber sleeve 842 and movably connected to the outside of the guide rod 846, a rotating seat 844 rotatably connected to the lower end of the fixed ring 843, and a plurality of connecting parts 845 fixedly connected to the inner wall of the rotating seat 844, and the other end of the connecting part 845 is fixedly connected to the outer surface of the rotating rod.

[0047] By adopting the above technical solution, the motor 81 can drive the screw 82 to rotate, and the rotation of the screw 82 can drive the catalyst skeleton 61 to move up and down. The up and down movement of the catalyst skeleton 61 can change the contact area between the inner wall of the reaction through hole 611 and the mixed gas, so that the high-temperature reaction area is no longer limited to the circumferential area of ​​the inner wall of the reaction through hole 611 (the area where the hollow rotating rod 63 rotates circumferentially and the ejected mixed gas contacts the reaction through hole 611), which helps to achieve a more uniform temperature distribution in the entire reaction zone. At the same time, the up and down movement of the catalyst skeleton 61 can cause the contact area of ​​the gas flow on the inner wall of the reaction through hole 611 to change dynamically, which may It helps to optimize the contact between gas flow and catalyst. At different operation stages, adjusting the position of catalyst skeleton 61 can help to better distribute gas flow and improve reaction efficiency. When catalyst skeleton 61 moves upward, cooling air ring 65 on the inner wall of reaction through hole 611 can move upward. The upward movement of cooling air ring 65 can drive fixed ring 1 841 to move upward. When fixed ring 1 841 moves upward, it drives one end of ceramic fiber sleeve 842 and guide rod 846 to move upward, so that ceramic fiber sleeve 842 (ceramic fiber has excellent high temperature resistance (temperature resistance up to 1200°C) between fixed ring 1 841 and fixed ring 2 843 is moved upward. The ceramic fiber sleeve 842 is unfolded and forms a flow channel area with the inner wall of the reaction through hole 611. The oxygen discharged from the cooling air ring 65 can pass through the flow channel area and be discharged from the lower end of the ceramic fiber sleeve 842 to react with the mixed gas discharged from the exhaust port three 64. Because the movement of the catalyst skeleton 61 drives the cooling air ring 65 to move, and the position of the exhaust port three 64 does not change, the distance between the cooling air ring 65 and the exhaust port three 64 becomes larger, and the oxygen discharged from the cooling air ring 65 can be directly discharged from the exhaust port three 64 to the vicinity of the mixed gas through the ceramic fiber sleeve 842 to avoid the situation that when the cooling air ring 65 rises and the distance between the exhaust port three 64 increases, the oxygen discharged from the cooling air ring 65 cannot reach the vicinity of the exhaust port three 64, resulting in the inability of the gas to react.

[0048] like Figure 2 and Figure 4 As shown, the lower end of the base plate 3 is connected to a carbonization cleaning unit 9, and the carbonization cleaning unit 9 includes a venturi mixing section 91 and an air compressor 93 fixedly connected to the lower end of the base plate 3, and the output end of the air compressor 93 is also connected to the throat of the venturi mixing section 91 through a one-way valve, and the lower end of the partition three 62 is fixedly connected to a rotary joint two 94, and the inner tube of the rotary joint two 94 passes through the partition three 62 and is inserted into the interior of the hollow rotating rod 63, and the input end of the rotary joint two 94 is connected to the output end of the venturi mixing section 91 through an infusion pipe 92.

[0049] The inside of the hollow rotating rod 63 is also connected to a second one-way valve 95 , and the second one-way valve 95 is located above the inner tube of the second rotating joint 94 .

[0050] The catalyst skeleton 61 is also provided with a cooling channel inside, which is a channel for coolant to flow inside the catalyst skeleton 61, and is used to realize heat exchange and cooling of the catalyst skeleton 61. The lower end of the catalyst skeleton 61 is provided with two cooling channel interfaces 612 connected to the cooling channel. Both cooling channel interfaces 612 penetrate the partition plate 3 62 and extend downward. Two pipe joints 33 are provided inside the bottom plate 3, and the two pipe joints 33 are respectively connected to the extended ends of the two cooling channel interfaces 612 through two telescopic pipes 32. One of the pipe joints 33 is connected to the cooling liquid supply pipe, and the other is connected to the cooling liquid supply pipe. A pipe joint 33 is connected to an external reflux pipe, and the coolant enters the telescopic pipe 32 from one of the pipe joints 33 and enters the cooling channel from the telescopic pipe 32 and the cooling channel interface 612. After taking away the heat in the catalyst skeleton 61, it is discharged from another cooling channel interface 612 into another telescopic pipe 32, and then discharged from another pipe joint 33. Heat exchange cooling belongs to the prior art. For example, the heat exchange technology is also used in the Chinese invention patent with patent announcement number CN102649570B (the patent adopts a heat exchange medium outlet, a heat exchange tube, and a heat exchange medium inlet to achieve heat exchange), which will not be repeated here.

[0051] By adopting the above technical solution, the input end of the venturi mixing section 91 (venturi tube, which belongs to the mature existing technology and will not be described here) is connected to the liquid supply pipe. Since carbon monoxide may combine with the metal atoms on the inner wall of the reaction through hole 611 to form a stable metal-carbide or other intermediates, thereby reducing the activity of the catalyst, a cleaning solvent (water, alcohol solvent, etc.) is regularly fed into the venturi mixing section 91. The air compressor 93 can compress oxygen and feed it into the venturi mixing section 91 and mix it with the cleaning solvent in the venturi mixing section 91. Oxygen can promote the oxidation of metal carbides on the surface of the catalyst and convert them into carbon dioxide or metal oxides. By mixing oxygen with a cleaning solvent (such as water, alcohol or acid-base solution), the oxygen in the gas can accelerate the oxidation process of the catalyst surface. Especially at high temperatures, oxygen can quickly react with carbides to enhance the cleaning process. Especially for metal carbides that are difficult to dissolve, oxygen can help convert them into removable gases or soluble substances through oxidation reactions.

[0052] Method of use: connect the air inlet hood 2 to the air supply pipe (the pipe for conveying the mixed gas of carbon monoxide and hydrogen), connect the exhaust port 31 to the pipe of the negative pressure device, the gas inside the hollow shell 1 can be extracted through the negative pressure device, connect the pipe interface 2 68 to the pipe for conveying oxygen, the mixed gas of carbon monoxide and hydrogen enters the hollow shell 1 and first reaches the flow cavity 11, the gas delivery pump 51 pumps the mixed gas in the flow cavity 11 into the rotary joint 1 52, the mixed gas is discharged from the inner tube of the rotary joint 1 52 and enters the hollow rotating rod 63, the mixed gas is discharged from the exhaust port 3 64 and blown onto the inner wall of the reaction through hole 611, the mixed gas can react with the catalyst on the inner wall of the reaction through hole 611, and at the same time, oxygen enters the pipe interface 1 67 from the pipe interface 2 68, enters the gas transmission pipe 66 from the pipe interface 1 67, and enters the cooling air ring 65 from the gas transmission pipe 66, and enters the cooling air ring 65 from the cooling air ring The outlet at the lower end of 65 discharges and blows vertically to the inner wall of the reaction through hole 611, ensuring the uniform distribution of oxygen on the inner wall of the reaction through hole 611, avoiding the concentration of oxygen in a certain area, and improving the efficiency of the catalytic reaction. During the reaction, the motor 1 71 drives the gear 1 72 to rotate, the gear 1 72 rotates to drive the gear 2 73 to rotate, the gear 2 73 rotates to drive the hollow rotating rod 63 to rotate, and when the hollow rotating rod 63 rotates, the exhaust port 3 64 can rotate and discharge the mixed gas, which helps to adjust the heat distribution on the inner wall of the reaction through hole 611. The motor 2 81 can drive the screw rod 82 to rotate, and the rotation of the screw rod 82 can drive the catalyst skeleton 61 to move up and down. The up and down movement of the catalyst skeleton 61 can change the contact area between the inner wall of the reaction through hole 611 and the mixed gas, so that the high-temperature reaction area is no longer limited to the circumferential area of ​​the inner wall of the reaction through hole 611, which helps to achieve a more uniform temperature distribution in the entire reaction zone.

[0053] The above is only a preferred specific implementation of the present invention; however, 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 solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbon monoxide gas oxidative dehydrogenation device, comprising a hollow shell (1), an air inlet hood (2) fixedly connected to the upper end of the hollow shell (1), a bottom plate (3) fixedly connected to the inner wall of the hollow shell (1), and an exhaust port (31) opened at the lower end of the bottom plate (3), characterized in that: The inner wall of the hollow shell (1) is also fixedly connected with a partition plate 1 (4) and a partition plate 2 (5) located below the partition plate 1 (4), and a flow cavity (11) is provided between the upper part of the partition plate 1 (4) and the air inlet cover (2), and the interior of the hollow shell (1) is also connected with an oxidation dehydrogenation unit (6); The oxidation dehydrogenation unit (6) is located between the bottom plate (3) and the second partition plate (5), and the oxidation dehydrogenation unit (6) comprises a third partition plate (62) fixedly connected to the inner wall of the hollow shell (1) and located above the bottom plate (3), a second exhaust port (621) opened inside the third partition plate (62), a catalyst skeleton (61) connected to the upper end of the third partition plate (62), a plurality of reaction through holes (611) opened inside the catalyst skeleton (61), a hollow rotating rod (63) with one end rotatably connected to the lower end of the second partition plate (5) and the other end rotatably connected to the upper end of the third partition plate (62), a plurality of third exhaust ports (64) obliquely opened outside the hollow rotating rod (63), and a plurality of cooling air rings (65) evenly distributed in a linear array and fixed to the inner wall of the reaction through hole (611); The upper end of the second partition (5) is fixedly connected to a rotary joint (52) and a gas delivery pump (51), and the inner tube of the rotary joint (52) is inserted into the hollow rotating rod (63) and fixedly connected to the hollow rotating rod (63), and the output end of the gas delivery pump (51) is connected to the input end of the rotary joint (52), and the input end passes through the first partition (4) and enters the flow cavity (11); The upper and lower ends of the partition plate 2 (5) are connected to a transverse heat-uniform unit (7), and the transverse heat-uniform unit (7) comprises a motor 1 (71) fixedly connected to the upper end of the partition plate 2 (5), a gear 1 (72) rotatably connected to the lower end of the partition plate 2 (5), and a gear 2 (73) rotatably connected to the lower end of the partition plate 2 (5) and fixedly sleeved on the outside of the hollow rotating rod (63), and the gear 1 (72) is meshed with the gear 2 (73), and the output shaft of the motor 1 (71) passes through the partition plate 2 (5) and is fixedly connected to the gear 1 (72); The upper end of the partition plate three (62) is fixedly connected to a plurality of fixing rods (76), and the upper ends of the plurality of fixing rods (76) are fixedly connected to a fixing ring three (77). The hollow rotating rod (63) is fixedly connected to a fixing seat (74) on the outside, and a movable block (75) is movably inserted inside the fixing seat (74). Inclined surfaces are provided on both sides of the movable block (75). A spring is connected inside the fixing seat (74), and the two ends of the spring are respectively connected to the inner wall of the fixing seat (74) and one side of the movable block (75).

2. The carbon monoxide gas oxidative dehydrogenation device according to claim 1, characterized in that: The catalyst skeleton (61) is internally connected to a plurality of gas pipelines (66), the upper end of the partition plate (5) is provided with a plurality of pipeline interfaces (67), the outer surface of the hollow shell (1) is provided with a plurality of pipeline interfaces (68), and the two ends of the gas pipeline (66) are respectively connected to the cooling air ring (65) and the pipeline interface (67).

3. The carbon monoxide gas oxidative dehydrogenation device according to claim 2, characterized in that: A one-way valve (69) is fixedly connected to the inner wall of the hollow rotating rod (63), and the one-way valve (69) is located below the inner tube of the rotating joint (52).

4. The carbon monoxide gas oxidative dehydrogenation device according to claim 3, characterized in that: The hollow shell (1) is also connected to a longitudinal heat-uniform unit (8), and the longitudinal heat-uniform unit (8) comprises a second motor (81) fixedly connected to the upper end of the second partition (5), a screw (82) screwed into the catalyst skeleton (61), and a guide rod (83) movably inserted into the catalyst skeleton (61), and the two ends of the screw rod (82) are rotatably connected to the lower end of the second partition (5) and the upper end of the third partition (62), respectively, and the two ends of the guide rod (83) are fixedly connected to the lower end of the second partition (5) and the upper end of the third partition (62), respectively, and the output shaft of the second motor (81) passes through the second partition (5) and is fixedly connected to one end of the screw rod (82).

5. The carbon monoxide gas oxidative dehydrogenation device according to claim 4, characterized in that: The inner walls of the plurality of cooling air rings (65) are all connected to a drainage assembly (84), and the drainage assembly (84) includes a fixed ring 1 (841) fixedly connected to the inner wall of the cooling air ring (65), a ceramic fiber sleeve (842) and a guide rod (846) fixedly connected to the lower end of the fixed ring 1 (841), a fixed ring 2 (843) fixedly connected to the other end of the ceramic fiber sleeve (842) and movably sleeved on the outside of the guide rod (846), a rotating seat (844) rotatably connected to the lower end of the fixed ring 2 (843), and a plurality of connecting parts (845) fixedly connected to the inner wall of the rotating seat (844), and the other end of the connecting part (845) is fixedly connected to the outer surface of the rotating rod.

6. The carbon monoxide gas oxidative dehydrogenation device according to claim 5, characterized in that: The lower end of the bottom plate (3) is connected to a carbonization cleaning unit (9), and the carbonization cleaning unit (9) comprises a venturi mixing section (91) and an air compressor (93) fixedly connected to the lower end of the bottom plate (3), the output end of the air compressor (93) is connected to the throat of the venturi mixing section (91), the lower end of the partition plate three (62) is fixedly connected to a rotary joint two (94), and the inner tube of the rotary joint two (94) passes through the partition plate three (62) and is inserted into the interior of the hollow rotating rod (63), and the input end of the rotary joint two (94) is connected to the output end of the venturi mixing section (91) through the infusion pipe (92).

7. The carbon monoxide gas oxidative dehydrogenation device according to claim 6, characterized in that: The hollow rotating rod (63) is also internally connected to a second one-way valve (95), and the second one-way valve (95) is located above the inner tube of the second rotating joint (94).

8. The carbon monoxide gas oxidative dehydrogenation device according to claim 7, characterized in that: A cooling channel is also provided inside the catalyst skeleton (61), and a cooling channel interface (612) connected to the cooling channel is provided at the lower end of the catalyst skeleton (61), the cooling channel interface (612) passes through the partition three (62) and extends downward, and a pipe joint (33) is provided inside the bottom plate (3), and the pipe joint (33) is connected to the extended end of the cooling channel interface (612) through the telescopic pipe (32).

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