Ammonia storage device based on granular physical adsorption material

Abstract

The utility model discloses an ammonia storage device based on a granular physical adsorption material, which comprises a tank body, a gas guide pipe, annular fins and adsorption particles capable of adsorbing ammonia gas, and a plurality of outer fins are arranged on the inner side of the tank wall; the inner fins are arranged on the peripheral side of the inner gas-guide tube, the adjacent inner fins and outer fins are arranged at intervals, vent holes are formed in the peripheral side of the inner gas-guide tube, penetrating type openings are formed in the annular fins, and the space between the tank wall and the inner gas-guide tube and the space between the outer fins and the inner fins are filled with adsorption particles; adsorption particles are evenly distributed in the tank body through the annular fins, gas is diffused to the circumferential side through the vent holes in the inner gas guide pipe and adsorbed through the evenly-distributed adsorption particles, and meanwhile heat generated when the adsorption particles are adsorbed through the annular fins is transferred and dissipated. The gas storage efficiency of the ammonia storage device is improved; meanwhile, the ammonia storage device has relatively high safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas storage and separation equipment technical field, concretely is a kind of ammonia storage device based on granular physical adsorption material. BACKGROUND

[0002] Common ammonia storage mode is mainly liquid ammonia storage and high-pressure storage.Liquid ammonia storage has high storage density, but has higher requirements on storage temperature.High-pressure storage method is simple and direct, but the pressure in tank is larger, and has higher requirements on compressor and tank structure strength.Therefore, existing ammonia storage mode is not suitable for small and medium-sized mobile ammonia storage scene.In order to cope with the growing demand for safe and efficient ammonia storage, physical adsorption materials represented by metal organic framework materials (MOFs) have attracted more and more attention, with high specific surface area, adjustable pore structure and excellent adsorption performance, which brings revolutionary breakthrough to ammonia storage field and provides a new solution for efficient and safe ammonia storage.

[0003] Although physical adsorption materials have excellent physical and chemical properties, in the field of ammonia storage, most of the existing physical adsorption materials for adsorbing ammonia are in powder or granular structure, and the adsorption material is directly filled in the ammonia storage tank and then simply stacked in the tank body, which not only greatly reduces the utilization rate of adsorption material, but also releases heat during the adsorption of ammonia, and the adsorption material may have structural stability problems during long-term use in high-pressure or high-humidity environment, which may cause framework collapse or performance degradation, affect its ammonia storage efficiency and service life, and the temperature rise in tank body will cause the pressure in tank to increase, when the pressure exceeds the bearing limit of tank body, explosion and other dangerous accidents may occur, and there is certain safety risk. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of ammonia storage device based on granular physical adsorption material, can guarantee the ammonia storage efficiency and security of ammonia storage device.

[0005] The technical scheme of the utility model is:

[0006] An ammonia storage device based on a granular physical adsorption material, comprising a tank body and adsorption particles filled in the tank body, comprising: an inner gas guide pipe located inside the tank body and connected to the tank bottom at one end, a plurality of gas passage holes penetrating the pipe wall of the inner gas guide pipe are arranged on the side of the inner gas guide pipe; a plurality of annular fins, comprising: a plurality of inner fins, each being an annular structure and sleeved on the inner gas guide pipe along the length direction of the inner gas guide pipe; a plurality of outer fins, each being an annular structure and arranged on the tank wall of the tank body along the height direction of the tank body, the outer ring surface of the outer fin is connected to the inner side of the tank wall, the plurality of inner fins and the plurality of outer fins are alternately and spacedly arranged along the height direction, and a plurality of openings penetrating in the thickness direction are arranged on the inner fin and the outer fin.

[0007] The adsorption particles are poured into the internal space surrounded by the tank body and the inner gas guide pipe from the upper end opening of the tank top, and the filling is assisted by means such as vibration table vibration.

[0008] After the ammonia gas enters the tank body through the outer gas guide pipe, the adjusting valve and the tank top, it enters the inner gas guide pipe through the filter screen and diffuses to the space around the inner gas guide pipe through the penetrating openings on the inner gas guide pipe, so that the ammonia gas and the adsorption particles are in full contact.

[0009] Further, the top of the inner gas guide pipe is provided with a filter screen. The material, mesh number, thickness and wire diameter of the filter screen can be adjusted and designed according to the application scenario.

[0010] Further, the inner fin and the outer fin have overlapping parts in vertical projection, there is a spacing distance between the outer ring surface of the inner fin and the inner side of the tank wall, and there is a spacing distance between the inner ring surface of the outer fin and the inner gas guide pipe, so that the adsorption particles can smoothly enter between each layer of adjacent inner fins and outer fins.

[0011] Further, the inner gas guide pipe is vertically arranged inside the tank body at the center position of the tank body, and the other end of the inner gas guide pipe exceeds the tank wall near the one end of the tank top, so that the gas entering the tank body can be promptly dispersed to the side of the inner gas guide pipe.

[0012] Further, the inner gas guide pipe, the tank body, the inner fin, the outer fin and the filter screen are all selected from solid materials stable in the ammonia gas environment.

[0013] Further, the thermal conductivity coefficients of the inner fin and the outer fin are both greater than the thermal conductivity coefficient of the tank wall.

[0014] Further, the inner fin and the inner gas guide pipe are welded, and the outer fin and the tank wall are welded.

[0015] Further, the plurality of ventilation holes on the inner gas guide pipe are uniformly spaced, the plurality of through openings on the inner fin and the outer fin are uniformly spaced, and the diameters of the ventilation holes on the inner gas guide pipe and the through openings on the inner fin and the outer fin are smaller than the pore size of the curvature radius of the adsorption particles.

[0016] Further, the thicknesses of the outer fin and the inner fin and the spacing between the outer fin and the inner fin are determined by the size and shape of the adsorption particles and the heat dissipation condition, and the diameters and positions of the through openings on the fins and the ventilation holes on the inner gas guide pipe are reasonably designed according to the physical properties of the adsorption particles.

[0017] Further, the two ends of the tank wall are respectively welded to the tank top and the tank bottom, each tank body should be designed before welding, and the shape parameters of the fins and the gas guide pipe cannot be adjusted after welding. In application scenarios where the internal pressure requirement is not high, the inner gas guide pipe and the tank bottom can be designed by using a detachable connection such as a threaded connection, the tank top and the tank wall are connected by bolts, and a sealing ring is used to seal the connection between the tank top and the tank wall for disassembly and assembly of the inner gas guide pipe.

[0018] Further, the tank top is provided with an inflation assembly, and the inflation assembly comprises: a hollow columnar protruding structure arranged on the tank top; an adjusting valve threadedly connected to the hollow columnar protruding structure; and an outer gas guide pipe located outside the tank body and connected to the adjusting valve.

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

[0020] The present application is based on the deficiencies of the existing ammonia storage technology, combines the actual needs of ammonia storage, uses a granular physical adsorption material with excellent adsorption performance, and carries the adsorption particles for adsorbing gas through the fin structure on the inner side of the tank wall and the outer side of the inner gas guide pipe. Ventilation holes are provided on the wall of the inner gas guide pipe, and through openings are provided on the fins, so that the ammonia gas can uniformly flow into the gap of the adsorption particles and be absorbed by the adsorption particles. At the same time, the heat transfer process is enhanced through the inner fin and the outer fin, which can effectively transfer the heat generated by the particles during the adsorption process to the environment through the fins, prevent the internal temperature from being too high, and improve the gas storage efficiency of the ammonia storage device while having high safety.

[0021] The present application is based on the deficiencies of the existing ammonia storage technology, combines the actual needs of ammonia storage, uses a granular physical adsorption material with excellent adsorption performance, and carries the adsorption particles for adsorbing gas through the fin structure on the inner side of the tank wall and the outer side of the inner gas guide pipe. Ventilation holes are provided on the wall of the inner gas guide pipe, and through openings are provided on the fins, so that the ammonia gas can uniformly flow into the gap of the adsorption particles and be absorbed by the adsorption particles. At the same time, the heat transfer process is enhanced through the inner fin and the outer fin, which can effectively transfer the heat generated by the particles during the adsorption process to the environment through the fins, prevent the internal temperature from being too high, and improve the gas storage efficiency of the ammonia storage device while having high safety. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 The structure of the present application is shown in Figure 1.

[0023] Fig. 2Structure schematic view of embodiment 2 of the utility model.

[0024] 1, tank bottom, 2, inner gas guide pipe, 3, inner fin, 4, outer fin, 5, tank wall, 6, tank top, 7, filter screen, 8, regulating valve, 9, outer gas guide pipe, 10, bolt. DETAILED DESCRIPTION

[0025] The specific embodiments of the utility model will be described in detail below. Figs. 1-2 In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0027] Embodiment 1

[0028] As Fig. 1As shown, an ammonia storage device based on a granular physical adsorption material includes a tank body, a gas guide pipe, a plurality of annular fins, and adsorption particles capable of adsorbing ammonia. The tank body is composed of a tank bottom 1, a tank wall 5, and a tank top 6 connected by welding. The tank top 6 is provided with a gas charging assembly, which includes a hollow cylindrical protrusion structure, an adjusting valve 8, and an outer gas guide pipe 9. The adjusting valve 8 is threadedly connected to the hollow cylindrical protrusion structure, so that the adjusting valve 8 and the tank body are detachably connected. The outer gas guide pipe 9 is located outside the tank body and is connected to the adjusting valve 8. The inner gas guide pipe 2 is located inside the tank body and is welded to the tank bottom 1. A plurality of air holes are formed in the pipe wall of the inner gas guide pipe 2. The plurality of annular fins include a plurality of inner fins 3 and a plurality of outer fins 4. Both the plurality of inner fins 3 and the plurality of outer fins 4 are annular structures. The plurality of inner fins 3 are sleeved on the inner gas guide pipe 2 along the length direction of the inner gas guide pipe 2. The plurality of outer fins 4 are arranged on the tank wall 5 of the tank body along the height direction of the tank body. The outer ring surface of the outer fin 4 is connected to the inner side of the tank wall 5. The plurality of inner fins 3 and the plurality of outer fins 4 are alternately and spacedly arranged along the height direction. A plurality of openings penetrating in the thickness direction are formed in the inner fin 3 and the outer fin 4. The adsorption particles are filled between the tank wall 5 and the inner gas guide pipe 2. When the adsorption particles are put into the tank body, the adjusting valve 8 is removed. The adsorption particles are put into the tank body from the hollow cylindrical protrusion structure on the tank top 6, and a vibrating table vibration or other methods are used to assist filling.

[0029] The adsorption particles are suitable for adsorption particles with high specific surface area and high adsorption capacity at normal temperature and pressure as adsorption materials. In addition, according to the needs of different application scenarios, other high-performance adsorption materials such as zeolite and activated carbon can also be selected to further expand the application range of the ammonia storage device.

[0030] The thickness and the spacing between the inner fin 3 and the outer fin 4 can be adjusted and designed according to the load capacity and physical properties (such as diameter, density, etc.) of the adsorption particles to adapt to different adsorption needs. In addition, considering factors such as weight, type of adsorption material, and placement method, the fins can be designed in different shapes at different depths to enhance the flow capacity of ammonia in the tank body and ensure efficient operation of the device.

[0031] After the ammonia gas enters the tank body through the outer gas guide pipe 9, the adjusting valve 8, and the tank top 6, it enters the inner gas guide pipe 2 through the filter screen 7 and diffuses to the space around the inner gas guide pipe 2 through the penetrating openings on the inner gas guide pipe 2, so that the ammonia gas fully contacts with the adsorption particles.

[0032] The top of the inner gas guide pipe 2 is provided with a filter screen 7. The material, mesh size, thickness, and wire diameter of the filter screen 7 can be adjusted and designed according to the application scenario.

[0033] In some embodiments, the inner gas guide pipe 2, the tank body, the inner fin 3, the outer fin 4, and the filter screen 7 are all made of solid materials that are stable in the ammonia environment.

[0034] In some embodiments, the thermal conductivity of both the inner fin 3 and the outer fin 4 is greater than that of the tank wall 5. This allows the inner fin 3 and outer fin 4 to quickly transfer heat from inside the tank to the outside. Due to their high thermal conductivity, heat is conducted quickly within the fins, increasing the heat dissipation area, accelerating heat dissipation, and preventing the temperature inside the tank from becoming too high.

[0035] In some embodiments, the length of the inner fin 3 is shorter than the length of the outer fin 4, so that the adsorbed particles can smoothly enter between adjacent inner fins 3 and outer fins 4 in each layer.

[0036] like Fig. 1 As shown, the inner gas guide pipe 2 is vertically installed inside the tank and located at the center of the tank. The other end of the inner gas guide pipe 2 extends beyond the end of the tank wall 5 near the top of the tank 6, so that after the gas enters the tank, it can be dispersed to its surroundings in a timely manner through the inner gas guide pipe 2.

[0037] In this embodiment, the inner fins 3 and the inner air guide pipe 2 are welded together, and the outer fins 4 and the tank wall 5 are welded together. The two ends of the tank wall 5 are welded to the tank top 1 and the tank top 6, respectively. This one-piece molding design results in better airtightness.

[0038] Multiple ventilation holes on the inner air guide tube 2 are evenly spaced, and multiple through openings on the inner fin 3 and outer fin 4 are evenly spaced. The diameter of the ventilation holes on the inner air guide tube 2 and the through openings on the inner fin 3 and outer fin 4 is smaller than the diameter of the radius of curvature of the adsorbed particles, which prevents the adsorbed particles from passing through the ventilation holes and openings, and allows ammonia gas to diffuse evenly around the inner air guide tube 2.

[0039] The thickness of the outer fin 4 and the inner fin 3, as well as the spacing between the outer fin 4 and the inner fin 3, are determined by the size and shape of the adsorbed particles and the heat dissipation. The pore size and pore position distribution on the fins and the inner air guide tube can be reasonably designed according to the physical properties of the physical adsorption material. Each type of tank should be designed before welding. After welding, the shape parameters of the fins and the air guide tube cannot be adjusted.

[0040] Example 2

[0041] like Fig. 2 As shown, in applications where internal pressure requirements are not high, the inner air guide tube 2 and the tank bottom 1 can be connected by a detachable design using threaded connections, and the tank top 6 and tank wall 5 are connected by bolts 10 and sealed with a sealing ring for easy assembly and disassembly of the inner air guide tube 2. The tank top 6 and tank wall 5 are easier to disassemble, allowing for timely replacement of adsorbed particles and cleaning and maintenance of the inner air guide tube 2.

[0042] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An ammonia storage device based on a particulate type physical adsorbent material, comprising a tank body and adsorbent particles filled in the tank body, characterized by, The application relates to a gas adsorption tank. The inner gas guide pipe (2) is vertically arranged in the tank body and located at the center of the tank body, and the other end of the inner gas guide pipe (2) is arranged beyond the tank wall (5) and close to the tank top (6). The inner gas guide pipe (2), the tank body, the inner fin (3), the outer fin (4) and the filter screen (7) are all made of solid materials stable in an ammonia gas environment.

2. The ammonia storage device based on a particulate physical adsorbent material according to claim 1, characterized in that The heat conductivity coefficients of the inner fin (3) and the outer fin (4) are greater than that of the tank wall (5).

3. The ammonia storage device based on a particulate physical adsorbent material according to claim 1, characterized in that, The plurality of air holes on the inner gas guide pipe (2) are uniformly and spacedly arranged, the plurality of openings on the inner fin (3) and the outer fin (4) are uniformly and spacedly arranged, and the diameters of the openings and the air holes are all smaller than the pore size of the curvature radius of the adsorption particles.

4. The ammonia storage device based on a particulate physical adsorbent material according to claim 1, characterized in that, The tank top (6) of the tank body is provided with an air charging assembly, and the air charging assembly comprises:

5. The ammonia storage device based on a particulate physical adsorbent material according to claim 2, characterized in that, A hollow columnar protruding structure arranged on the tank top (6); 6. The ammonia storage device based on a particulate physical adsorbent material according to claim 1, characterized in that, An adjusting valve (8) threadedly connected to the hollow columnar protruding structure; 7. The ammonia storage device based on a particulate physical adsorbent material according to claim 1, characterized in that, An outer gas guide pipe (9) arranged outside the tank body and connected to the adjusting valve (8).

8. The ammonia storage device based on a particulate physical adsorbent material according to claim 1, characterized in that, ​ ​ ​ ​

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