Tubular atomization contact absorber with annular flange grid sheet structure

Abstract

The invention provides a tubular atomization contact absorber with an annular flange grid piece structure. The technical problem that the gas-liquid atomization mixing effect of the tubular contact absorber in a small-diameter pipeline is poor is solved. The tubular atomization contact absorber comprises a gas flow stabilizing pipe with a gas inlet, a gas-liquid mixing contact pipe with a gas-liquid mixing outlet, a liquid primary distribution element and an annular flange grid piece, the gas flow stabilizing pipe and the gas-liquid mixing contact pipe are fixedly connected and communicated, and the liquid primary distribution element comprises an atomization nozzle. The atomizing nozzle is located in the gas-liquid mixing contact pipe and used for atomizing liquid and then spraying out the liquid. The annular flange grid pieces are fixed in the gas-liquid mixing contact pipe and located on the downstream section of the atomizing nozzle, the annular flange grid pieces are arranged around the axis of the gas-liquid mixing contact pipe at intervals, and flange slits are formed between the adjacent annular flange grid pieces. The method is more suitable for gas-liquid mixing contact mass transfer in a small-diameter pipeline space, and the mass transfer coefficient and the gas-liquid mixing contact uniformity of a micro-droplet gas-liquid interface are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas-liquid atomization mixed contact mass transfer in pipelines, in particular to a tubular atomization contact absorber with an annular flange grid structure. Background Art

[0002] The natural gas, coalbed methane, shale gas, coal rock gas, etc. extracted from the strata contain not only methane and light hydrocarbons, but also inevitably contain impurities such as water, dust particles, CO2, H2S, etc. Therefore, they need to be purified by deacidification and dehydration to meet the quality index requirements of long-distance pipeline transportation, light hydrocarbon recovery, LNG liquefaction processing and commercial natural gas for acid gas and gaseous water.

[0003] At present, the methods for natural gas dehydration include solvent absorption, solid adsorbent adsorption, cryogenic condensation, membrane separation and supersonic separation, among which the triethylene glycol (TEG) dehydration method is the most widely used in solvent absorption. The main methods for removing acidic gases such as CO2 and H2S from natural gas include dry method, wet method, membrane separation method and biological method. Among them, the wet method with alcohol amine absorption method is currently the most used method for natural gas deacidification. Bubble tower, structured packing tower and other tower-type gas-liquid contact absorption equipment are commonly used in the natural gas triethylene glycol (TEG) absorption dehydration and alcohol amine solution absorption deacidification processes, which have the problem of large volume and weight. The tubular contact absorption equipment based on micro-droplet gas-liquid co-current enhanced mass transfer has the advantages of large gas-liquid volume mass transfer number, light weight, compact structure and small footprint, and is more suitable for offshore platforms or remote oil and gas fields with restrictions on equipment volume and weight.

[0004] The tubular atomizing contact absorber in the prior art, such as a tubular parallel-flow gas-liquid contact absorber in the prior art, has a main body composed of a gas steady-flow straight pipe section, a gas contraction acceleration section, a gas dispersion expansion section and a gas-liquid uniform mixing mass transfer absorption section, wherein a liquid injection atomizing component is provided in both the gas contraction acceleration section and the gas dispersion expansion section, and the liquid injection atomizing component includes a central ellipsoidal guide cone and a trapezoidal cone, a guide cone liquid annular flow channel is provided in the central ellipsoidal guide cone, and the outer tube liquid annular flow channel and the guide cone liquid annular flow channel are connected by a Multiple liquid annular flow channels are connected by connecting pipes, and multiple liquid injection holes are evenly distributed on the outer wall of the liquid annular flow channel of the guide cone along the circumferential direction. An auxiliary atomizing gas flow channel is axially arranged inside the central ellipsoidal guide cone, and an auxiliary atomizing gas annular gap is arranged at the tail end of the guide cone to blow away the liquid film attached to the wall of the tail end of the guide cone for atomization. However, the overall pipe diameter of this structure is large, the structure is relatively complex, and the overall processing difficulty is relatively large. At the same time, the liquid is injected in the form of ejection through the internal flow channel of the central ellipsoid, and the liquid is broken and atomized mainly in the center of the pipeline, resulting in poor uniformity of gas-liquid contact and mixing in the pipeline.

[0005] The applicant has discovered that the prior art has at least the following technical problems: the tubular atomizing contact absorber has problems such as large tube diameter, uneven crushed atomized particle size, and poor gas-liquid turbulent contact mixing. Especially when the gas processing capacity of gas field wellhead gas processing facilities is small, a small-diameter tubular gas-liquid contact absorber is required. The existing structure of the tubular contact absorber has poor gas-liquid atomization mixing effect in a small-diameter pipeline. Summary of the invention

[0006] The object of the present invention is to provide a tubular atomizing contact absorber with an annular flange grating structure to solve the technical problem that the gas-liquid atomizing mixing effect of the tubular contact absorber in a small diameter pipeline in the prior art is poor. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided by the present invention are described in detail below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The tubular atomizing contact absorber with an annular flange grating structure provided by the present invention comprises a gas flow stabilizing tube with a gas inlet, a gas-liquid mixing contact tube with a gas-liquid mixing outlet, a liquid primary distribution element and an annular flange grating, wherein:

[0009] The gas steady flow tube is fixedly connected and communicated with the gas-liquid mixing contact tube, and the liquid primary distribution element comprises an atomizing nozzle, which is located in the gas-liquid mixing contact tube and is used to atomize the liquid and then spray it out;

[0010] The annular flange grid is fixed in the gas-liquid mixing contact tube and is located in the downstream section of the atomizing nozzle. The annular flange grid is arranged at intervals around the axis of the gas-liquid mixing contact tube, and flange slits are formed between adjacent annular flange grids.

[0011] Preferably, the liquid primary distribution element further comprises a liquid flow channel having a liquid injection port, wherein the liquid flow channel is located between the gas steady flow tube and the gas-liquid mixing contact tube and is connected to the atomizing nozzle;

[0012] The atomizing nozzle is arranged coaxially with the annular flange grid.

[0013] Preferably, a center hole is provided at the center of the annular flange grid piece, all the annular flange grid pieces are constructed as concentric ring structures with different inner diameters, and all the annular flange grid pieces are arranged cocentrically with the center hole.

[0014] Preferably, the tubular atomizing contact absorber also includes a flange shell, which is fixed on the inner wall of the gas-liquid mixing contact tube, and the annular flange grid is fixed in the flange shell, and adjacent annular flange grids are fixedly connected by support columns.

[0015] Preferably, the axial cross-sectional width of the annular flange grating gradually increases in the direction away from the atomizing nozzle, so that the distance between adjacent annular flange gratings gradually decreases in the direction away from the atomizing nozzle.

[0016] Preferably, the annular flange grid has an outer inclined surface, and a tail end inner side inclination angle α is formed between the outer inclined surface and the axis of the gas-liquid mixing contact tube, and the tail end inner side inclination angle ɑ is 10°-25°.

[0017] Preferably, the atomizing nozzle is provided with a spray hole, and the spray hole is arranged along the radial direction of the gas-liquid mixing contact tube;

[0018] The number of the spray holes is 4-16, and the spray holes are circumferentially distributed around the axis of the atomizing nozzle.

[0019] Preferably, the liquid primary distribution element further comprises a guide body, the guide body is fixedly connected to the atomizing nozzle, one end of the guide body facing the gas inlet is ellipsoidal, and the convex surface of the ellipsoid is arranged toward the gas inlet.

[0020] Preferably, the inner diameters of the gas steady flow tube and the gas-liquid mixing contact tube are 20-80 mm, the liquid primary distribution element comprises a liquid flow channel, and the inner diameter of the liquid flow channel is 2 mm-8 mm; the length of the gas-liquid mixing contact tube is in the range of 10-40 times the tube diameter;

[0021] The thickness of the annular flange grid is 2mm-4mm, the width of the slit is 0.25mm-1mm, and the curvature ρ of the annular flange grid is 0-1.

[0022] Preferably, the inner diameter of the atomizing nozzle is 2 mm-8 mm, the number of the spray holes is 4-16, the diameter of the spray holes is 0.3 mm-1 mm, and the end faces of the spray holes are chamfered by 0.2-0.5 mm.

[0023] The tubular atomizing contact absorber with an annular flange grating structure provided by the present invention has the following beneficial effects compared with the prior art: the atomizing nozzle and the annular flange grating are coaxially arranged to form an integrated tubular atomizing mixing device, which is more suitable for gas-liquid mixing contact mass transfer in a small diameter pipeline space on the one hand, and on the other hand, a uniformly distributed thin liquid film is formed on the surface of the annular flange grating, and the droplet particle size distribution generated by the broken atomization in the high-speed airflow is more uniform, thereby greatly improving the uniformity of gas-liquid contact mixing. The multi-layer, small-size flange slits between the annular flange gratings divide the pipeline flow section, and a large number of micro-scale turbulent vortices are generated in the gas-liquid contact mixing zone downstream of the annular flange grating, further improving the micro-droplet gas-liquid interface mass transfer coefficient and gas-liquid mixing contact uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic cross-sectional structure diagram of a tubular atomizing contact absorber with an annular flange grating structure provided in an embodiment of the present invention.

[0026] Figure 2 A schematic diagram of the cross-sectional structure of a liquid primary distribution element provided in an embodiment of the present invention.

[0027] Figure 3 The structural intention of the annular flange grid provided by the embodiment of the present invention;

[0028] Figure 4 The axial cross-sectional structure of the annular flange grid provided by the present invention is intended.

[0029] In the figure, 1, gas inlet; 2, gas flow stabilizing tube; 3, liquid primary distribution element; 4, annular flange grid; 5, gas-liquid mixing contact tube; 6, gas-liquid mixing outlet; 7, liquid injection port; 8, liquid flow channel; 9, guide body; 10, atomizing nozzle; 101, spray hole; 11, flange shell; 12, flange slit; 13, center hole; 14, support column. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] The embodiment of the present invention provides a tubular atomizing contact absorber with an annular flange grating structure, which innovatively connects an atomizing nozzle with circumferentially uniformly distributed jet holes and an annular flange grating in series to form an integrated device, and proposes a tubular atomizing contact absorber with an annular flange grating structure suitable for low processing volume and small pipe diameter conditions. By reasonably controlling the slit area between the annular flange gratings, not only a high-speed airflow is generated at the annular flange grating to fully break up the atomized liquid, so that the particle size distribution of the generated droplets is more uniform, but also a large number of micro-scale turbulent vortices are generated in the gas-liquid contact mixing zone downstream of the annular flange grating, which effectively improves the micro-droplet gas-liquid interface mass transfer coefficient and the uniformity of gas-liquid mixing contact. Therefore, the proposed tubular atomizing contact absorber with an annular flange grating structure has the advantages of compact structure, good uniformity of broken droplet particle size, small amount of absorbent, high gas-liquid mass transfer absorption efficiency, and convenient installation and arrangement.

[0033] Combine the following Figure 1-Figure 4 The technical solution provided by the present invention is described in more detail.

[0034] like Figure 1-Figure 4 The present invention provides a tubular atomizing contact absorber with an annular flange grating structure, comprising a gas stabilizing flow tube 2 with a gas inlet 1, a gas-liquid mixing contact tube 5 with a gas-liquid mixing outlet 6, a liquid primary distribution element 3 and an annular flange grating 4, wherein: the gas stabilizing flow tube 2 and the gas-liquid mixing contact tube 5 are fixedly connected and communicated, the liquid primary distribution element 3 comprises an atomizing nozzle 10, the atomizing nozzle 10 is located in the gas-liquid mixing contact tube 5, and is used to atomize the liquid and then spray it out; the annular flange grating 4 is fixed in the gas-liquid mixing contact tube 5 and is located in the downstream section of the atomizing nozzle 10, the annular flange grating 4 is arranged at intervals around the axis of the gas-liquid mixing contact tube 5, and flange slits 12 are formed between adjacent annular flange gratings 4.

[0035] As an alternative embodiment, see Figure 1 and Figure 2 As shown, the atomizing nozzle 10 is provided with spray holes 101 , which are arranged along the radial direction of the gas-liquid mixing contact tube 5 ; the number of the spray holes 101 is 4-16, and the spray holes 101 are circumferentially distributed around the axis of the atomizing nozzle 10 .

[0036] In the above structure, the liquid column is sprayed outward from the spray holes 101 uniformly distributed circumferentially on the side wall of the atomizing nozzle 10. The liquid jet column is deflected toward the central axis under the shearing action of the airflow, and finally the flow direction of the jet liquid is parallel to the airflow direction. In this process, the liquid column is sheared and broken by the airflow and atomized into liquid bands or small droplets, completing one atomization.

[0037] Based on the concept of unit technology compounding, the present invention arranges the atomizing nozzle 10 with circumferentially uniformly distributed spray holes and the annular flange grating 4 coaxially to form an integrated tubular atomizing mixing device, and proposes a tubular atomizing contact absorber with an annular flange grating 4 structure. The device realizes efficient gas-liquid atomization and mixed mass transfer based on a specific principle.

[0038] The working principle is as follows: the gas to be purified enters the tubular atomizing contact absorber through the gas inlet 1, and after the liquid enters the liquid primary distribution element 3 through the liquid injection port 7, the liquid column is sprayed outward along the circumferentially uniformly distributed spray holes 101, and the liquid column is bent and broken into liquid bands or small droplets under the shear force of the airflow, completing the primary atomization mixing; then the initially atomized liquid bands and droplets are evenly sprayed on the atomization area of ​​the annular flange grid 4 under the drive of the airflow, and a thin liquid film is generated on the flange surface of the annular flange grid 4. The thin liquid film is ejected from the grid ring gap with the high-speed airflow formed at the annular gap of the annular flange grid 4, and is further torn and broken into more uniform micro-droplets, completing the secondary atomization mixing. At the same time, a large number of micro-scale turbulent vortices are generated in the gas-liquid contact mixing area downstream of the annular flange grid 4, further improving the micro-droplet gas-liquid interface mass transfer coefficient and gas-liquid mixing contact uniformity, and the gas-liquid two-phase turbulent mixing contact mass transfer in the gas-liquid contact mixing area downstream of the annular flange grid 4.

[0039] The annular flange grid 4 and the gas-liquid mixing contact tube 5 are connected by an embedded annular groove in the tube. The inner diameter of the gas flow stabilizing tube 2 and the gas-liquid mixing contact tube 5 is 20-80mm. The gas flow stabilizing tube 2, the liquid primary distribution element 3 and the gas-liquid mixing contact tube 5 are connected by flange clamps and sealed by O-rings or gaskets.

[0040] As an alternative embodiment, see Figure 1 and Figure 2 As shown, the liquid primary distribution element 3 also includes a liquid flow channel 8 with a liquid injection port 7. The liquid flow channel 8 is located between the gas steady flow tube 2 and the gas-liquid mixing contact tube 5, and is connected to the atomizing nozzle 10; the atomizing nozzle 10 is coaxially arranged with the annular flange grid 4.

[0041] The atomizing nozzle 10 of this embodiment is coaxially arranged with the annular flange grid 4 to form an integrated tubular atomizing mixing device, which can sequentially undergo preliminary atomization and liquid film segmentation by the flange slit 12, thereby improving the uniformity of gas-liquid contact mixing.

[0042] As an alternative embodiment, see Figure 4 As shown, a center hole 13 is provided at the center of the annular flange grid piece 4 , all the annular flange grid pieces 4 are constructed as concentric ring structures with different inner diameters, and all the annular flange grid pieces 4 are arranged cocentrically with the center hole 13 .

[0043] With the above structure, the gas-liquid mixture can evenly pass through the flange slits 12 between the annular flange grid sheets 4, and the thin liquid film is formed in the flange slits 12 between the annular flange bodies. Figure 4 The three flange slits 12 areas are indicated as F1, F2, and F3 respectively. The liquid is ejected under the drive of the high-speed airflow generated by F1, F2, and F3, and is torn and broken by the high-speed airflow to produce smaller and more uniform micro-droplets. The micro-droplets are evenly distributed in the space of the gas-liquid mixing contact tube 5 along with the airflow.

[0044] As an alternative embodiment, see Figure 4 As shown, the tubular atomizing contact absorber further comprises a flange shell 11, the flange shell 11 is fixed on the inner wall of the gas-liquid mixing contact tube 5, and the annular flange grid 4 is fixed in the flange shell 11, see Figure 3 Adjacent annular flange grids 4 are fixedly connected by support columns 14 .

[0045] The above structure facilitates the annular flange grid plate 4 to be fixed in the gas-liquid mixing contact tube 5 through the flange shell 11, and facilitates the coaxial arrangement of the annular flange grid plate 4 and the atomizing nozzle 10.

[0046] As an alternative embodiment, see Figure 4 As shown, the axial cross-sectional width of the annular flange grating 4 gradually increases in the direction away from the atomizing nozzle 10, so that the distance between adjacent annular flange gratings 4 gradually decreases in the direction away from the atomizing nozzle 10. The annular flange grating 4 has an outer inclined surface, and a tail end inner side inclination angle α is formed between the outer inclined surface and the axis of the gas-liquid mixing contact tube 5, and the tail end inner side inclination angle ɑ is 10°-25° and the length is 1mm-2mm.

[0047] In the above structure, since the distance between adjacent annular flange gratings 4 gradually decreases in the direction away from the atomizing nozzle 10, the gas-liquid mixture is easy to form a high-speed airflow at the center hole 13 of the annular flange grating 4 and F1, F2, and F3 of the flange slit 12, and shrinks at the inner side inclination angle ɑ at the rear end of the flange shell 11 to accelerate and converge toward the center.

[0048] As an optional embodiment, the liquid primary distribution element further includes a guide body 9, which is fixedly connected to the atomizing nozzle 10, and the end of the guide body 9 facing the gas inlet 1 is ellipsoidal, and the convex surface of the ellipsoid is arranged toward the gas inlet 1. The atomizing nozzle 10 and the guide body 9 are coaxially welded or threaded.

[0049] The above structure of the flow guide 9 has an ellipsoidal convex surface as the windward surface, which can guide the airflow to shear and break it into uniform micro droplets, thereby improving the atomization effect.

[0050] As an optional embodiment, the inner diameters of the gas flow stabilizing tube 2 and the gas-liquid mixed contact tube 5 are 20-80 mm, and the inner diameter of the liquid flow channel 8 is 2 mm-8 mm; the length of the gas-liquid mixed contact tube 5 is 10-40 times the tube diameter; the thickness of the annular flange grid sheet 4 is 2 mm-4 mm, the slit width is 0.25 mm-1 mm, and the curvature ρ of the annular flange grid sheet 4 is 0-1. The inner diameter of the atomizing nozzle 10 is 2 mm-8 mm, the number of the spray holes is 4-16, the diameter of the center hole 13 is 2 mm-5 mm, the diameter of the spray hole is 0.3 mm-1 mm, and the end surface of the spray hole is chamfered by 0.2-0.5 mm.

[0051] For details, see Figure 3 and Figure 4 As shown, the annular flange grid sheet 4 is divided into four atomization areas A, B, C, D and three areas F1, F2, F3 of the flange slit 12 and a central hole 13 by the support column 14, and the flange shell 11 and the annular flange grid sheet 4 are welded by the support column 14.

[0052] During operation, the natural gas to be purified enters the tubular atomizing contact absorber through the gas inlet 1, and then the gas passes through the gas steady flow tube 2 to reach the guide body 9 and the atomizing nozzle 10. At the same time, the liquid flows through the liquid flow channel 8 through the liquid injection port 7 and finally reaches the atomizing nozzle 10. The liquid column is sprayed outward from the spray holes uniformly distributed in the circumferential direction of the side wall of the atomizing nozzle 10. The liquid jet column is deflected toward the central axis under the shearing action of the airflow, and the final flow direction of the jet liquid is parallel to the airflow direction. In this process, the liquid column is sheared and broken by the airflow and atomized into liquid bands or small droplets, completing atomization. Subsequently, the initially atomized liquid bands and small droplets are evenly sprayed on the four areas A, B, C, and D of the annular flange grid 4 under the drive of the airflow, and the liquid filaments and small droplets are sprayed on the flange surface of the annular flange body 12 to form a thin liquid film. A high-speed airflow is formed at the central hole of the annular flange grid 4 and the flange slits F1, F2, and F3, and shrinks at the inner inclination angle ɑ at the tail end of the flange shell 11 to accelerate and converge toward the center. The thin liquid film is ejected under the drive of the high-speed airflow generated by the slits F1, F2, and F3 between the annular flange body 12, and is torn and broken by the high-speed airflow to produce smaller and more uniform micro-droplets, which are evenly distributed in the space of the gas-liquid mixing contact tube 5 with the airflow. The airflow is accelerated to converge toward the center at the contraction angle ɑ at the tail end of the flange shell 11, so that the atomized micro-droplets are fully mixed at the center of the gas-liquid mixing contact tube 5, reducing the collision between the atomized micro-droplets and the inner wall of the gas-liquid mixing contact tube 5, thereby reducing the formation of the liquid film in the gas-liquid mixing contact tube 5 and completing the secondary atomization. Due to the presence of the annular flange body 12 with a flow-guiding shape, the annular flange grid 4 generates a large number of micro-scale turbulent vortices in the gas-liquid contact mixing zone and its downstream, and the uniformly atomized micro-droplets will accelerate the turbulent mixing contact mass transfer here, and finally flow forward through the gas-liquid mixing contact tube 5 with the airflow.

[0053] The tubular atomizing contact absorber with an annular flange grating structure provided by the present invention can realize the purification treatment of natural gas dehydration and deacidification under different working conditions. It has the characteristics of wide adaptability to working conditions, simple structure, good uniformity of atomized droplet particle size, and high gas-liquid atomization mixed absorption efficiency.

[0054] The tubular atomizing contact absorber with an annular flange grating structure provided by the present invention has the following characteristics compared with the conventional tubular atomizing absorber:

[0055] 1. The tubular atomizing contact absorber with an annular flange grating structure of the present invention arranges the atomizing element with circumferentially uniformly distributed spray holes and the annular flange grating coaxially to form an integrated tubular atomizing mixing device. On the one hand, it is more suitable for gas-liquid mixing contact mass transfer in a small diameter pipeline space. On the other hand, a uniformly distributed thin liquid film is formed on the surface of the annular flange grating 4, and the droplet particle size distribution generated by the broken atomization in the high-speed airflow is more uniform, thereby greatly improving the uniformity of gas-liquid contact mixing.

[0056] 2. In the tubular atomizing contact absorber with an annular flange grating structure described in the present invention, the multi-layer and small-sized annular gaps of the annular flange grating divide the pipeline flow cross-section, and generate a large number of micro-scale turbulent vortices in the gas-liquid contact and mixing zone downstream of the annular flange grating 4, further improving the micro-droplet gas-liquid interface mass transfer coefficient and the uniformity of gas-liquid mixing contact.

[0057] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A tubular atomizing contact absorber with an annular flange grid structure, characterized in that: The invention comprises a gas steady flow tube with a gas inlet, a gas-liquid mixing contact tube with a gas-liquid mixing outlet, a liquid primary distribution element and an annular flange grid, wherein: The gas steady flow tube is fixedly connected and communicated with the gas-liquid mixing contact tube, and the liquid primary distribution element comprises an atomizing nozzle, which is located in the gas-liquid mixing contact tube and is used to atomize the liquid and then spray it out; The annular flange grid is fixed in the gas-liquid mixing contact tube and is located in the downstream section of the atomizing nozzle. The annular flange grid is arranged at intervals around the axis of the gas-liquid mixing contact tube, and flange slits are formed between adjacent annular flange grids.

2. The tubular atomizing contact absorber with an annular flange grid structure according to claim 1, characterized in that: The liquid primary distribution element further comprises a liquid flow channel having a liquid injection port, wherein the liquid flow channel is located between the gas steady flow tube and the gas-liquid mixing contact tube and is connected to the atomizing nozzle; The atomizing nozzle is arranged coaxially with the annular flange grid.

3. The tubular atomizing contact absorber with an annular flange grid structure according to claim 1, characterized in that: A central hole is arranged at the center of the annular flange grid piece, and all the annular flange grid pieces are constructed as concentric ring structures with different inner diameters, and all the annular flange grid pieces are arranged cocentrically with the central hole.

4. The tubular atomizing contact absorber with an annular flange grid structure according to claim 1, characterized in that: The tubular atomizing contact absorber also includes a flange shell, which is fixed on the inner wall of the gas-liquid mixing contact tube, and the annular flange grid is fixed in the flange shell. Adjacent annular flange grids are fixedly connected by supporting columns.

5. The tubular atomizing contact absorber with an annular flange grid structure according to any one of claims 1 to 4, characterized in that: The axial cross-sectional width of the annular flange grid piece gradually increases in the direction away from the atomizing nozzle, so that the distance between adjacent annular flange grid pieces gradually decreases in the direction away from the atomizing nozzle.

6. The tubular atomizing contact absorber with an annular flange grid structure according to claim 5, characterized in that: The annular flange grid has an outer inclined surface, and a tail end inner side inclination angle α is formed between the outer inclined surface and the axis of the gas-liquid mixing contact tube, and the tail end inner side inclination angle ɑ is 10°-25°.

7. The tubular atomizing contact absorber with an annular flange grid structure according to claim 1, characterized in that: The atomizing nozzle is provided with a spray hole, and the spray hole is arranged along the radial direction of the gas-liquid mixing contact tube; The number of the spray holes is 4-16, and the spray holes are circumferentially distributed around the axis of the atomizing nozzle.

8. The tubular atomizing contact absorber with an annular flange grid structure according to claim 1, characterized in that: The liquid primary distribution element further comprises a guide body, which is fixedly connected to the atomizing nozzle. One end of the guide body facing the gas inlet is ellipsoidal, and the convex surface of the ellipsoid is arranged toward the gas inlet.

9. The tubular atomizing contact absorber with an annular flange grid structure according to claim 3, characterized in that: The inner diameters of the gas steady flow tube and the gas-liquid mixed contact tube are 20-80 mm, the liquid primary distribution element comprises a liquid flow channel, and the inner diameter of the liquid flow channel is 2 mm-8 mm; the length of the gas-liquid mixed contact tube is in the range of 10-40 times the tube diameter; The thickness of the annular flange grid is 2mm-4mm, the width of the slit is 0.25mm-1mm, and the curvature ρ of the annular flange grid is 0-1.

10. The tubular atomizing contact absorber with an annular flange grid structure according to claim 7, characterized in that: The inner diameter of the atomizing nozzle is 2mm-8mm, the number of the spray holes is 4-16, the diameter of the spray holes is 0.3mm-1mm, and the end faces of the spray holes are chamfered by 0.2-0.5mm.

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