Spiral absorber

Abstract

The present invention relates to the field of gas absorption, and provides a spiral absorber, which comprises: a housing for accommodating an absorption medium, the housing being provided with an absorption medium inlet and an absorption medium outlet; the heat exchange pipe comprises a heat exchange spiral section, the heat exchange spiral section is spirally arranged in the shell in the axial direction of the shell, and the heat exchange pipe is used for circulation of a cooling medium; the gas distribution unit and the heat exchange spiral section are sequentially arranged in the axial direction of the shell, the gas distribution unit is used for being connected with a gas source for providing a medium to be absorbed, and gas distribution holes are formed in the gas distribution unit; and the air supply unit is connected with the air distribution unit and extends in the direction where the heat exchange spiral section of the heat exchange pipe is located, and a plurality of air supply holes are formed in the air supply unit in the extending direction of the air supply unit. Air is supplemented at different positions along the multiple air supplementing holes of the air supplementing unit, the contact area between the to-be-absorbed medium and the absorption medium can be increased, the problem that the contact area between the to-be-absorbed medium and the absorption medium is reduced due to the fact that bubbles are combined into large bubbles in the rising process can be solved, and the mass transfer efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas absorption, and in particular to a spiral absorber. Background Art

[0002] Absorbers are needed in the fields of HVAC, energy utilization, food and medicine, petrochemicals, etc. The principle of absorbers is to use solutions to absorb gases to achieve the capture, separation or removal of one or more components. For example: in absorption refrigeration and heat pump systems, absorbers are used to absorb gas working fluids and solutions, thereby completing the entire solution cycle and achieving heat-driven efficient refrigeration and heating; in carbon capture and storage systems, absorbers are used to absorb carbon dioxide in flue gas into amine working fluids to achieve efficient capture of carbon dioxide; in air dehumidification systems, absorbers are used to absorb water vapor in the air into dehumidification solutions to achieve moisture removal and air humidity control.

[0003] Different from traditional heat exchangers, absorbers have both heat transfer and mass transfer processes: during the absorption process, one or several components in the medium to be absorbed (usually gas) migrate to the absorption medium (usually liquid), which is a mass transfer process; this mass transfer process is often accompanied by heat transfer, and most absorption processes are exothermic processes, so it is necessary to introduce a cooling medium for cooling to ensure the continuation of the absorption process, which is a heat transfer process. Whether it is a heat transfer process or a mass transfer process, it is necessary to have sufficient contact area between the absorption medium and the medium to be absorbed, and the mass transfer area required for the absorption process is often larger than the heat transfer area. Therefore, absorbers are often larger than heat exchangers with the same heat exchange power, which results in large equipment size, large liquid storage volume, and high cost, which seriously limits and hinders the practical application of absorbers.

[0004] In order to increase the contact area between the absorption medium and the medium to be absorbed, that is, the gas-liquid contact area, a bubbling absorber is provided in the related art. The improvement method of the bubbling absorber is mainly to strengthen the gas distribution, that is, the medium to be absorbed is broken into small bubbles by the gas distribution device and evenly distributed in the absorption medium. However, the inventor found that the bubbling absorber in the related art has at least the following defects: on the one hand, since all the medium to be absorbed is injected from the bottom of the absorber, the number of bubbles formed by the gas distribution device is huge, and the dense small bubbles will converge into large bubbles or even gas columns as the gas-liquid flows, forming slug flow, slug flow, annular flow, slug flow, etc., with a large specific surface area, resulting in deterioration of heat and mass transfer; on the other hand, the disturbance of the inlet section of the medium to be absorbed is severe, forming turbulence, so the heat and mass transfer efficiency of the front section of the absorber is high, but as the gas-liquid flow gradually stabilizes, a laminar flow is formed, so the heat and mass transfer of the middle and rear sections of the absorber deteriorates. Summary of the invention

[0005] The present invention provides a spiral absorber for solving or improving the defect in the related art that bubbles of the bubbling absorber are easily aggregated during the rising process, resulting in deterioration of heat and mass transfer, thereby achieving the effect of improving the heat and mass transfer efficiency.

[0006] The present invention provides a spiral absorber, comprising:

[0007] A shell, the shell is used to accommodate an absorption medium, and the shell is provided with an absorption medium inlet and an absorption medium outlet;

[0008] A heat exchange tube, the heat exchange tube comprising a heat exchange spiral section, the heat exchange spiral section being spirally arranged in the shell along the axial direction of the shell, and the heat exchange tube is used for circulating a cooling medium;

[0009] An air distribution unit, wherein the air distribution unit and the heat exchange spiral section are sequentially arranged along the axial direction of the shell, the air distribution unit is used to be connected to an air source providing a medium to be absorbed, and the air distribution unit is provided with air distribution holes;

[0010] An air supply unit is connected to the air distribution unit and extends in the direction of the heat exchange spiral section of the heat exchange tube. The air supply unit is provided with a plurality of air supply holes along its extension direction.

[0011] According to a spiral absorber provided by the present invention, the number of the heat exchange tubes is multiple, wherein at least two of the heat exchange spiral sections have the same diameter, and the heat exchange spiral sections with the same diameter are arranged parallel to each other.

[0012] According to a spiral absorber provided by the present invention, there are multiple heat exchange tubes, wherein the diameter of a part of the heat exchange spiral segments is larger than the diameter of another part of the heat exchange spiral segments, and the heat exchange spiral segments with larger diameters are mounted on the outside of the heat exchange spiral segments with smaller diameters.

[0013] According to a spiral absorber provided by the present invention, three chambers are arranged in sequence along the axial direction of the shell and are independent of each other, the air distribution unit, the air replenishment unit and the heat exchange spiral section are all arranged in the middle chamber among the three chambers, and the absorption medium inlet and the absorption medium outlet are both connected to the middle chamber;

[0014] The two ends of the heat exchange spiral section are respectively connected to the chambers located at the two ends among the three chambers, and the shell is provided with a cooling medium inlet and a cooling medium outlet, and the cooling medium inlet and the cooling medium outlet are respectively connected to the chambers located at the two ends.

[0015] According to a spiral absorber provided by the present invention, the shell includes a cylinder, a pair of heads and a pair of sealing plates, the pair of heads are respectively sealed at both ends of the cylinder, the pair of sealing plates are arranged in the cylinder and there is a distance between the pair of sealing plates, the pair of heads are respectively provided with the cooling medium inlet and the cooling medium outlet, and the chamber is formed between the pair of sealing plates and between the sealing plates and the heads.

[0016] According to a spiral absorber provided by the present invention, the air distribution unit includes an air distribution plate, the air distribution plate is connected to the inner wall of the shell, the air distribution holes are arranged on the air distribution plate, the shell is provided with an air inlet, the air inlet is arranged on the side of the air distribution plate away from the heat exchange spiral section, and is used to introduce the medium to be absorbed into the side of the air distribution plate away from the heat exchange spiral section.

[0017] According to a spiral absorber provided by the present invention, the air supply unit includes an air supply pipe, one end of which is connected to the air distribution unit, and the other end of which is closed and extends in the direction of the heat exchange tube, and the air supply hole is provided on the tube wall of the air supply pipe.

[0018] According to a spiral absorber provided by the present invention, the axis of at least a portion of the air supply pipe is a curve.

[0019] According to a spiral absorber provided by the present invention, the air supply pipe comprises a spirally arranged air supply spiral section;

[0020] The diameter of the air-supply spiral section of the air-supply pipe and the heat-exchange spiral section of the heat-exchange pipe are the same and the two are arranged parallel to each other, or the diameter of the air-supply spiral section of the air-supply pipe is larger or smaller than the diameter of the heat-exchange spiral section of the heat-exchange pipe, and the air-supply spiral section of the air-supply pipe is mounted on the outside or inside of the heat-exchange spiral section of the heat-exchange pipe.

[0021] According to a spiral absorber provided by the present invention, there are multiple air supply pipes, and at least some of the air supply pipes are straight pipes.

[0022] According to a spiral absorber provided by the present invention, the orifice size of the air supplement hole of the air supplement unit close to the absorption medium inlet end is larger than the orifice size of the air supplement hole of the air supplement unit close to the absorption medium outlet end;

[0023] And / or, the number of the air-injection holes at one end of the air-injection unit close to the absorption medium inlet is greater than the number of the air-injection holes at one end of the air-injection unit close to the absorption medium outlet.

[0024] The spiral absorber provided by the present invention can be introduced into the shell through the absorption medium inlet, and the absorption medium can be discharged from the absorption medium outlet after absorbing the medium to be absorbed in the shell. The heat exchange tube is used for the circulation of cooling medium, and the heat exchange spiral section of the heat exchange tube is arranged in the shell, which can cool the absorption medium. The spiral arrangement of the heat exchange spiral section can increase the contact area between the heat exchange spiral section and the absorption medium, thereby improving the cooling effect on the absorption medium.

[0025] The gas source passes the medium to be absorbed into the gas distribution unit, and part of the medium to be absorbed in the gas distribution unit is discharged from the gas distribution holes into the shell to form bubbles and absorbed by the absorption medium, thereby increasing the mass transfer area between the absorption medium and the medium to be absorbed and enhancing the mass transfer.

[0026] The remaining medium to be absorbed enters the gas replenishment unit, runs along the gas replenishment unit, and is discharged from each gas replenishment hole of the gas replenishment unit. Gas replenishment is performed at different positions through multiple gas replenishment holes distributed along the extension direction of the gas replenishment unit, which can not only increase the contact area between the medium to be absorbed and the absorption medium, but also reduce the problem of bubbles merging into large bubbles during the rising process, resulting in a reduction in the contact area between the medium to be absorbed and the absorption medium, thereby improving mass transfer efficiency.

[0027] In addition, the air replenishing unit replenishes air at different positions through multiple air replenishing holes. Under the stirring action of the airflow sprayed from the air holes at various locations, the absorption medium in the shell is basically in a turbulent state, which can not only make the medium to be absorbed quickly dissolve in the absorption medium, but also speed up the heat exchange efficiency between the absorption medium and the cooling medium, and reduce the problem of deterioration of mass transfer and heat transfer under laminar flow conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or 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 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.

[0029] Figure 1 is a schematic diagram of the structure of a spiral absorber provided in some embodiments of the present invention;

[0030] Figure 2 Some embodiments of the present invention provide Figure 1 AA section view in the view shown;

[0031] Figure 3 Some embodiments of the present invention provide Figure 2 A partial enlarged view of position Ⅰ in the view shown;

[0032] Figure 41 is an exploded structural diagram of a spiral absorber provided in some embodiments of the present invention.

[0033] Reference numerals:

[0034] 1. Shell; 101. Absorption medium inlet; 102. Absorption medium outlet; 103. Cylinder; 104. Head; 105. Closing plate; 106. Chamber; 107. Air inlet; 108. Cooling medium outlet; 109. Cooling medium inlet; 2. Heat exchange tube; 201. Heat exchange spiral section; 202. Heat exchange connecting section; 3. Air distribution plate; 301. Air distribution hole; 4. Straight tube; 5. Air supply spiral section; 6. Air supply connecting section; 7. Air supply hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Combine the following Figures 1 to 4 A spiral absorber provided in an embodiment of the present invention is described.

[0037] Specifically, the spiral absorber includes a shell 1, a heat exchange tube 2, an air distribution unit and an air supply unit.

[0038] The housing 1 is used to contain the absorption medium, and is provided with an absorption medium inlet 101 for the absorption medium to enter and an absorption medium outlet 102 for the absorption medium to discharge. The absorption medium inlet 101 and the absorption medium outlet 102 are respectively arranged near the two ends of the housing 1.

[0039] The heat exchange tube 2 includes a heat exchange spiral section 201. The heat exchange spiral section 201 of the heat exchange tube 2 is spirally arranged in the shell 1 along the axial direction of the shell 1. The heat exchange tube 2 is used for the circulation of the cooling medium. It should be noted that the axial direction of the shell 1 is also the flow direction of the absorption medium in the shell 1. It should be noted that the heat exchange tube 2 can exchange heat with the absorption medium in the shell 1 in the form of parallel flow heat exchange, counter flow heat exchange, mixed flow heat exchange or cross flow heat exchange.

[0040] The air distribution unit is disposed in the housing 1, and the air distribution unit and the heat exchange spiral section 201 are sequentially arranged along the axial direction of the housing 1. The air distribution unit is used to connect to an air source providing the medium to be absorbed, and the air distribution unit is provided with air distribution holes 301. Figure 2As shown, during use, the axial direction of the shell 1 is arranged in the vertical direction, the absorption medium inlet 101 is arranged near the bottom of the shell 1, the absorption medium outlet 102 is arranged near the top of the shell 1, and the air distribution unit is arranged below the heat exchange spiral section 201.

[0041] The air supply unit is connected to the air distribution unit, and the air supply unit extends in the direction of the heat exchange spiral section 201 of the heat exchange tube 2. The air supply unit is provided with a plurality of air supply holes 7 along its extension direction.

[0042] In the spiral absorber provided in the embodiment of the present invention, the absorption medium can be introduced into the shell 1 through the absorption medium inlet 101, and the absorption medium absorbs the medium to be absorbed in the shell 1 and is discharged from the absorption medium outlet 102. The heat exchange tube 2 is used for the circulation of cooling medium, and the heat exchange spiral section 201 of the heat exchange tube 2 is arranged in the shell 1, which can cool the absorption medium. The heat exchange spiral section 201 with a spiral structure extends the path of the heat exchange tube 2 in the shell, thereby increasing the contact area between the heat exchange spiral section 201 and the absorption medium, and improving the cooling effect on the absorption medium.

[0043] The gas source passes the medium to be absorbed into the gas distribution unit, and part of the medium to be absorbed in the gas distribution unit is discharged from the gas distribution holes 301 into the shell 1 to form bubbles and absorbed by the absorption medium, thereby increasing the mass transfer area between the absorption medium and the medium to be absorbed and enhancing the mass transfer.

[0044] The remaining medium to be absorbed enters the gas replenishment unit, runs along the gas replenishment unit, and is discharged from the gas replenishment holes 7 of the gas replenishment unit. Gas replenishment is performed at different positions through the multiple gas replenishment holes 7 distributed along the extension direction of the gas replenishment unit, which can not only increase the contact area between the medium to be absorbed and the absorption medium, but also reduce the problem of the reduction of the contact area between the medium to be absorbed and the absorption medium caused by the merging of bubbles into large bubbles during the rising process, thereby improving the mass transfer efficiency.

[0045] In addition, the air replenishing unit replenishes air at different positions through multiple air replenishing holes 7. Under the stirring action of the airflow sprayed from the air distribution holes 301 at various locations, the absorption medium in the shell 1 is basically in a turbulent state, which can not only make the medium to be absorbed quickly dissolve in the absorption medium, but also speed up the heat exchange efficiency between the absorption medium and the cooling medium, and reduce the problem of deterioration of mass transfer and heat transfer under laminar flow conditions.

[0046] refer to Figure 4 As shown, in some embodiments provided by the present invention, the number of heat exchange tubes 2 is multiple, wherein at least two heat exchange spiral segments 201 have the same diameter, and the heat exchange spiral segments 201 with the same diameter are arranged parallel to each other, that is, the heat exchange spiral segments 201 with the same diameter have the same spiral angle and pitch, and the heat exchange spiral segments 201 with the same diameter are arranged in sequence along the axial direction of the shell.

[0047] In this embodiment, by providing a plurality of heat exchange tubes 2 to simultaneously conduct the cooling medium, the flow rate of the cooling medium flowing through the shell 1 can actually be increased, and the heat exchange area in the shell 1 can be increased, thereby improving the cooling effect on the absorption medium. By providing the heat exchange spiral segments 201 with the same diameter in parallel, that is, the heat exchange spiral segments 201 with the same diameter are arranged in sequence along the axial direction of the shell 1, the axial space of the shell 1 can be fully utilized, the number of heat exchange tubes 2 in the axial direction of the shell 1 can be increased, and the heat exchange efficiency can be improved.

[0048] Of course, the heat exchange tube 2 is not limited to the above-mentioned configuration. Figure 4 As shown, in other embodiments provided by the present invention, the number of heat exchange tubes 2 is multiple, wherein the diameter of a portion of the heat exchange spiral segments 201 is larger than the diameter of another portion of the heat exchange spiral segments 201, and the heat exchange spiral segments 201 with a larger diameter are mounted on the outside of the heat exchange spiral segments 201 with a smaller diameter.

[0049] In this embodiment, by providing a plurality of heat exchange tubes 2 to simultaneously conduct the cooling medium, the flow rate of the cooling medium flowing through the shell 1 can actually be increased, and the heat exchange area in the shell 1 can be increased, thereby improving the cooling effect on the absorption medium. By sequentially arranging the heat exchange spiral segments 201 with different diameters from the inside to the outside, that is, sequentially arranging the heat exchange spiral segments 201 with different diameters along the transverse direction of the shell 1, the transverse space of the shell 1 can be fully utilized, the number of heat exchange tubes 2 in the transverse direction of the shell 1 can be increased, and the heat exchange efficiency can be improved. Of course, this embodiment can be used in conjunction with the previous embodiment.

[0050] refer to Figure 2 As shown, in some embodiments provided by the present invention, three chambers 106 arranged in sequence along the axial direction of the shell 1 and independent of each other are provided in the shell 1. The air distribution unit, the air supply unit and the heat exchange spiral section 201 are all arranged in the middle chamber 106 among the three chambers 106, and the absorption medium inlet 101 and the absorption medium outlet 102 are both connected to the middle chamber 106.

[0051] The two ends of the heat exchange spiral section 201 are respectively connected to the chambers 106 located at the two ends among the three chambers 106. The shell 1 is provided with a cooling medium inlet 109 and a cooling medium outlet 108, and the cooling medium inlet 109 and the cooling medium outlet 108 are respectively connected to the chambers 106 located at the two ends.

[0052] In the specific operation process, the cooling medium is introduced from the cooling medium inlet 109, and the cooling medium enters the chamber 106 at the first end of the shell 1. The cooling medium in the chamber 106 at the first end of the shell 1 enters each heat exchange tube 2, and after exchanging heat with the absorption medium, enters the chamber 106 at the second end of the shell 1. Finally, it is discharged from the cooling medium outlet 108.

[0053] With such an arrangement, cooling medium can be introduced into all heat exchange tubes 2 through a cooling medium inlet 109, and cooling medium discharged from all heat exchange tubes 2 can be discharged through a cooling medium outlet 108, so that the spiral absorber has a simple and compact structure and is easy to connect to a cooling medium supply device.

[0054] refer to Figure 2 and Figure 4 As shown, in some embodiments provided by the present invention, the shell 1 includes a cylinder 103, a pair of heads 104 and a pair of sealing plates 105.

[0055] Among them, a pair of heads 104 are respectively sealed at both ends of the cylinder 103, a pair of sealing plates 105 are arranged inside the cylinder 103, and there is a distance between the pair of sealing plates 105. The pair of heads 104 are respectively provided with a cooling medium inlet 109 and a cooling medium outlet 108, and the pair of sealing plates 105 and the sealing plates 105 and the heads 104 respectively form corresponding chambers 106. Specifically, the air distribution unit, the air replenishment unit, the heat exchange spiral section 201, the absorption medium inlet 101 and the absorption medium outlet 102 are all arranged between the pair of sealing plates 105. With such an arrangement, the heat exchanger has a simple structure and low manufacturing difficulty.

[0056] Optionally, the cylinder 103 and the sealing head 104 may be connected by welding or threading. The cylinder 103 and the sealing plate 105 may be connected by welding or threading.

[0057] refer to Figure 2 and Figure 4 As shown, optionally, the heat exchange tube 2 further includes a heat exchange connecting section 202. The two ends of the heat exchange spiral section 201 of the heat exchange tube 2 are respectively connected with corresponding heat exchange connecting sections 202, and the heat exchange connecting sections 202 at both ends of the heat exchange spiral section 201 respectively pass through a pair of sealing plates 105 and are respectively connected to a pair of heads 104.

[0058] During use, the cooling medium enters the first end cap 104 from the cooling medium inlet 109 of the first end cap 104, and the cooling medium in the first end cap 104 enters the heat exchange spiral section 201 through the heat exchange connecting section 202 at the first end of the heat exchange spiral section 201. The cooling medium discharged from the heat exchange spiral section 201 enters the second end cap 104 through the heat exchange connecting section 202 at the second end of the heat exchange spiral section 201, and is finally discharged from the cooling medium outlet 108 on the second end cap 104.

[0059] In some embodiments provided by the present invention, the air distribution unit includes an air distribution plate 3. The air distribution plate 3 is connected to the inner wall of the shell 1, and the air distribution holes 301 are arranged on the air distribution plate 3. The shell 1 is provided with an air inlet 107 for the medium to be absorbed to enter, and the air inlet 107 is arranged on the side of the air distribution plate 3 away from the heat exchange spiral section 201, and is used to pass the medium to be absorbed to the side of the air distribution plate 3 away from the heat exchange spiral section 201. In this way, the structure of the air distribution plate is simple, and a plurality of air distribution holes can be arranged on the air distribution plate, so as to evenly distribute the air.

[0060] During use, the medium to be absorbed is introduced from the air inlet 107, enters the side of the air distribution plate 3 away from the spiral heat exchange section, and then is discharged through the air distribution holes 301 of the air distribution plate 3 to achieve the air distribution effect.

[0061] refer to Figure 2 As shown, further, an air inlet cavity is formed between the side of the air distribution plate 3 away from the heat exchange spiral section 201 and the corresponding sealing plate 105, and the air inlet 107 is connected to the air inlet cavity, that is, the medium to be absorbed introduced from the air inlet 107 enters the air inlet cavity, and the medium to be absorbed in the air inlet cavity is discharged from the air distribution hole 301 to the side of the air distribution plate 3 close to the heat exchange spiral section 201. The heat exchange connection section 202 passes through the air distribution plate 3, the air inlet cavity and the sealing plate 105 in sequence and is connected to the inside of the corresponding head 104.

[0062] In some embodiments provided by the present invention, the air supply unit includes an air supply pipe. One side of the air supply pipe is connected to the air supply unit, and the other end of the air supply pipe is closed and extends in the direction of the heat exchange pipe 2. The air supply hole 7 is provided on the pipe wall of the air supply pipe. In this way, the structure of the air supply pipe is simple.

[0063] In some embodiments provided by the present invention, the axis of at least part of the pipe section of the air supply pipe is a curve. Such a configuration can extend the path length of the air supply pipe in the shell 1, thereby increasing the air supply range of the air supply pipe, thereby improving the mass transfer efficiency on the one hand, and on the other hand, can increase the disturbance range of the absorption medium in the shell 1, so that the absorption medium in the shell 1 is in a turbulent state, thereby improving the heat and mass transfer efficiency.

[0064] refer to Figure 2-Figure 4 As shown, in some embodiments provided by the present invention, the air-infusing pipe includes a spirally arranged air-infusing spiral section 5.

[0065] Optionally, the diameters of the air-supply spiral section 5 of the air-supply pipe and the heat-exchange spiral section 201 of the heat-exchange pipe 2 are the same and the two are arranged parallel to each other.

[0066] Alternatively, the diameter of the air-supply spiral section 5 of the air-supply pipe is larger or smaller than the diameter of the heat-exchange spiral section 201 of the heat-exchange pipe 2 , and the air-supply spiral section 5 of the air-supply pipe is sleeved on the outside or inside of the heat-exchange spiral section 201 of the heat-exchange pipe 2 .

[0067] In this way, the air-supplementing spiral section 5 and the heat-exchanging spiral section 201 are arranged in parallel or in an inner-outer arrangement, so that the internal space of the shell 1 can be fully utilized.

[0068] refer to Figure 3 As shown, optionally, the air supply pipe also includes an air supply connecting section 6, and the end of the air supply spiral section 5 close to the air distribution plate 3 is connected to the air supply connecting section, and the air supply connecting section 6 passes through the air distribution plate 3 and is connected to the air inlet cavity.

[0069] In some embodiments provided by the present invention, there are multiple air supply pipes, and at least some of the air supply pipes are straight pipes 4. With such a configuration, the structure of the air supply pipes is simple.

[0070] Optionally, refer to Figure 2 and Figure 4 As shown, there are at least two heat exchange spiral segments 201, and at least two heat exchange spiral segments 201 are sequentially mounted from the inside to the outside. A straight pipe 4 for air replenishment is provided inside the innermost heat exchange spiral segment 201, and a straight pipe 4 for air replenishment is provided between two adjacent heat exchange spiral segments 201.

[0071] Furthermore, a plurality of straight tubes 4 for air supply are provided between two adjacent heat exchange spiral sections 201 , and the plurality of straight tubes 4 are distributed along the circumference of the heat exchange spiral section 201 .

[0072] Furthermore, the diameter of the straight tube 4 located inside the innermost heat exchange spiral section 201 is larger than the diameter of the straight tube 4 located between two adjacent heat exchange spiral sections 201, wherein the straight tube 4 located inside the innermost heat exchange spiral section 201 is circumferentially distributed with a plurality of air replenishment holes 7. This arrangement can fully utilize the internal space of the innermost heat exchange spiral section 201.

[0073] In some embodiments provided by the invention, the orifice size of the gas replenishment hole 7 at one end of the gas replenishment unit close to the absorption medium inlet 101 is larger than the orifice size of the gas replenishment hole 7 at one end of the gas replenishment unit close to the absorption medium outlet 102. Since the time required for the gas to run to the absorption medium outlet 102 is shorter after it is discharged from the gas replenishment hole 7 at one end of the gas replenishment unit close to the absorption medium outlet 102, the contact time between the absorption medium and the medium to be absorbed is shorter. In this embodiment, by reducing the orifice size of the gas replenishment hole 7 at one end of the gas replenishment unit close to the absorption medium outlet 102, the amount of gas discharged from the exhaust hole at one end of the gas replenishment unit close to the absorption medium outlet 102 can be reduced, thereby reducing the problem that the gas cannot be absorbed by the absorption medium.

[0074] In some embodiments provided by the invention, the number of the gas replenishment holes 7 at one end of the gas replenishment unit close to the absorption medium inlet 101 is greater than the number of the gas replenishment holes 7 at one end of the gas replenishment unit close to the absorption medium outlet 102. Since the time required for the gas to run to the absorption medium outlet 102 is shorter after it is discharged from the gas replenishment holes 7 at one end of the gas replenishment unit close to the absorption medium outlet 102, the contact time between the absorption medium and the medium to be absorbed is shorter. In this embodiment, by reducing the number of gas replenishment holes 7 at one end of the gas replenishment unit close to the absorption medium outlet 102, the amount of gas discharged from the exhaust hole at one end of the gas replenishment unit close to the absorption medium outlet 102 can be reduced, thereby reducing the problem that the gas cannot be absorbed by the absorption medium.

[0075] In some embodiments provided by the present invention, the air supplement hole 7 is a circular hole, a star-shaped hole or a polygonal hole. The air distribution hole 301 is a circular hole, a star-shaped hole or a polygonal hole.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spiral absorber, characterized in that: include: A shell (1), the shell (1) is used to accommodate an absorption medium, and the shell (1) is provided with an absorption medium inlet (101) and an absorption medium outlet (102); A heat exchange tube (2), the heat exchange tube (2) comprising a heat exchange spiral section (201), the heat exchange spiral section (201) being spirally arranged in the shell (1) along the axial direction of the shell (1), and the heat exchange tube (2) being used for circulating a cooling medium; an air distribution unit, the air distribution unit and the heat exchange spiral section (201) being arranged in sequence along the axial direction of the shell (1), the air distribution unit being used to be connected to an air source providing a medium to be absorbed, and the air distribution unit being provided with air distribution holes (301); An air supply unit is connected to the air distribution unit and extends in the direction where the heat exchange spiral section (201) of the heat exchange tube (2) is located. The air supply unit is provided with a plurality of air supply holes (7) along its own extension direction.

2. The spiral absorber according to claim 1, characterized in that: The number of the heat exchange tubes (2) is multiple, wherein at least two of the heat exchange spiral sections (201) have the same diameter, and the heat exchange spiral sections (201) with the same diameter are arranged parallel to each other.

3. The spiral absorber according to claim 1, characterized in that: The number of the heat exchange tubes (2) is multiple, wherein the diameter of a portion of the heat exchange spiral segments (201) is larger than the diameter of another portion of the heat exchange spiral segments (201), and the heat exchange spiral segments (201) with larger diameters are sleeved on the outside of the heat exchange spiral segments (201) with smaller diameters.

4. The spiral absorber according to claim 1, characterized in that: The shell (1) is provided with three chambers (106) which are arranged in sequence along the axial direction of the shell (1) and are independent of each other; the air distribution unit, the air supply unit and the heat exchange spiral section (201) are all arranged in the chamber (106) located in the middle of the three chambers (106); the absorption medium inlet (101) and the absorption medium outlet (102) are both in communication with the chamber (106) located in the middle; The two ends of the heat exchange spiral section (201) are respectively connected to the chambers (106) located at the two ends among the three chambers (106), and the shell (1) is provided with a cooling medium inlet (109) and a cooling medium outlet (108), and the cooling medium inlet (109) and the cooling medium outlet (108) are respectively connected to the chambers (106) located at the two ends.

5. The spiral absorber according to claim 4, characterized in that: The shell (1) comprises a cylinder (103), a pair of heads (104) and a pair of sealing plates (105); the pair of heads (104) are respectively sealed at two ends of the cylinder (103); the pair of sealing plates (105) are arranged in the cylinder (103) and there is a distance between the pair of sealing plates (105); the pair of heads (104) are respectively provided with the cooling medium inlet (109) and the cooling medium outlet (108); the corresponding chambers (106) are respectively formed between the pair of sealing plates (105) and between the sealing plates (105) and the heads (104).

6. The spiral absorber according to any one of claims 1 to 5, characterized in that: The air distribution unit comprises an air distribution plate (3), the air distribution plate (3) being connected to the inner wall of the shell (1), the air distribution holes (301) being arranged on the air distribution plate (3), the shell (1) being provided with an air inlet (107), the air inlet (107) being arranged on a side of the air distribution plate (3) away from the heat exchange spiral section (201), and being used for introducing a medium to be absorbed into a side of the air distribution plate (3) away from the heat exchange spiral section (201).

7. The spiral absorber according to any one of claims 1 to 5, characterized in that: The air supply unit comprises an air supply pipe, one end of which is connected to the air distribution unit, the other end of which is closed and extends in the direction of the heat exchange pipe (2), and the air supply hole (7) is provided on the pipe wall of the air supply pipe.

8. The spiral absorber according to claim 7, characterized in that: The axis of at least a portion of the air supply pipe is a curve.

9. The spiral absorber according to claim 8, characterized in that: The air supply pipe comprises an air supply spiral section (5) arranged in a spiral manner; The diameters of the air-supply spiral section (5) of the air-supply pipe and the heat-exchange spiral section (201) of the heat-exchange pipe (2) are the same and the two are arranged parallel to each other, or the diameter of the air-supply spiral section (5) of the air-supply pipe is larger or smaller than the diameter of the heat-exchange spiral section (201) of the heat-exchange pipe (2), and the air-supply spiral section (5) of the air-supply pipe is sleeved on the outside or inside of the heat-exchange spiral section (201) of the heat-exchange pipe (2).

10. The spiral absorber according to claim 7, characterized in that: There are multiple air supply pipes, and at least some of the air supply pipes are straight pipes (4).

11. The spiral absorber according to any one of claims 1 to 5, characterized in that: The orifice size of the air replenishment hole (7) at one end of the air replenishment unit close to the absorption medium inlet (101) is larger than the orifice size of the air replenishment hole (7) at one end of the air replenishment unit close to the absorption medium outlet (102); And / or, the number of the air replenishing holes (7) at one end of the air replenishing unit close to the absorption medium inlet (101) is greater than the number of the air replenishing holes (7) at one end of the air replenishing unit close to the absorption medium outlet (102).

Images