Adsorbent regeneration tower with airflow directional convergence function, and adsorbent regeneration system

Abstract

The present disclosure belongs to the technical field of flue gas adsorption purification. Disclosed are an adsorbent regeneration tower with an airflow directional convergence function, and an adsorbent regeneration system. The adsorbent regeneration tower with an airflow directional convergence function comprises a tower body and a gas supply assembly, wherein an inner cavity of the tower body is provided with a feeding cavity, a preheating cavity, a mixing chamber, a heating cavity, a degassing chamber, a cooling cavity and a discharging cavity, which are sequentially arranged in a vertical direction; a feeding port is provided at the top of the tower body; a discharging port is provided at the bottom of the tower body; the tower body is provided with a suction port; the suction port is in communication with the degassing chamber; and the gas supply assembly is connected to both the feeding cavity and the discharging cavity and is used for filling the feeding cavity and the discharging cavity with gas and maintaining a positive pressure in both the feeding cavity and the discharging cavity, so that regenerated rich gas converges in the degassing chamber. The adsorbent regeneration tower with an airflow directional convergence function disclosed in the present disclosure can effectively control an adsorbent desorption and regeneration temperature zone and make an airflow directionally converge in the desorption and regeneration temperature zone, so as to improve the suction effect of the regenerated rich gas.

Description

Adsorbent regeneration tower and adsorbent regeneration system with airflow directional collection function

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on and claims the priority of the Chinese patent application with application number 202311568367.9 and application date November 23, 2023. The entire content of the Chinese patent application is hereby incorporated into this application by reference. Technical Field

[0003] The present disclosure belongs to the technical field of flue gas adsorption purification, and particularly relates to an adsorbent regeneration tower and an adsorbent regeneration system with an airflow directional collection function. Background Art

[0004] In the related art, adsorption purification is a commonly used flue gas purification method. After the flue gas is purified by adsorption using an adsorbent, the saturated adsorbent is typically desorbed and regenerated to restore its activity, allowing it to be reused for adsorption purification. The regeneration equipment desorbs and regenerates nitrogen oxide-rich regeneration gas by heating the adsorbent. This gas is then separated from the adsorbent by suction and discharged from the regeneration equipment for subsequent processing. In the related art, the discharge of the regenerated rich gas from the regeneration equipment is ineffective, resulting in the desorbed regenerated rich gas being unable to be effectively separated from the adsorbent, necessitating a need for improvement. Summary of the Invention

[0005] The present disclosure is based on the inventors' findings and understanding of the following facts and problems:

[0006] In the related art, the adsorbent is heated in the regeneration equipment to desorb and regenerate the regenerated rich gas, and the regenerated rich gas is discharged from the regeneration rich gas outlet of the regeneration equipment. However, the inventors realized that due to the low porosity of the adsorbent after accumulation in the regeneration equipment, it is difficult to extract the regenerated rich gas and the discharge effect is poor. In particular, when the adsorbent accumulation layer reaches a certain thickness, an effective negative pressure suction zone can only be formed in a local space. The inventors found that the desorption and regeneration of the adsorbent is carried out within a predetermined temperature range. In the related art, due to the inability to effectively guide and control the airflow in the tower body, the temperature of different sections in the tower body is greatly affected by the non-directional diffusion of the airflow, and it is impossible to form an ideal temperature range in different sections of the tower body, so that the desorption and regeneration of the adsorbent is not concentrated, and a large amount of regenerated rich gas will be desorbed in areas outside the effective negative pressure suction zone. In addition, the regenerated rich gas cannot be directionally guided, resulting in the inability to effectively extract the regenerated rich gas, affecting the regeneration effect and increasing the difficulty of subsequent processing.

[0007] The present disclosure aims to address, at least to some extent, one of the technical problems in the related art. To this end, the present disclosure proposes an adsorbent regeneration tower with a directional airflow convergence function. This adsorbent regeneration tower effectively controls the adsorbent desorption and regeneration temperature zone, directing and converging the airflow into the desorption and regeneration temperature zone, thereby improving the extraction efficiency of the regenerated rich gas and, in turn, enhancing the regeneration efficiency of the adsorbent.

[0008] The present disclosure also provides an adsorbent regeneration system.

[0009] The adsorbent regeneration tower with airflow directional collection function according to the present disclosure comprises:

[0010] A tower body, wherein the inner cavity of the tower body has a feed chamber, a preheating chamber, a mixing chamber, a heating chamber, a degassing chamber, a cooling chamber and a discharge chamber arranged in sequence in a vertical direction; a feed port is provided at the top of the tower body for inputting adsorbent saturated with adsorption into the feed chamber to form an adsorbent layer in the feed chamber; a discharge port is provided at the bottom of the tower body for discharging the regenerated adsorbent from the discharge chamber; a suction port is provided on the tower body, and the suction port is communicated with the degassing chamber for extracting the regenerated rich gas desorbed by the adsorbent in the degassing chamber and forming a negative pressure in the degassing chamber;

[0011] An air supply component is connected to the feed chamber and the discharge chamber respectively, and is used to inflate the feed chamber and the discharge chamber and maintain positive pressure in the feed chamber and the discharge chamber so that the regenerated rich gas is collected in the degassing chamber.

[0012] The adsorbent regeneration tower with airflow directional collection function disclosed herein divides the inner cavity of the tower body into sections and fills the feed cavity at the top of the tower body and the discharge cavity at the bottom of the tower body with air, so that the two ends of the tower body maintain positive pressure, and the degassing chamber for sucking and regenerating rich gas can present a negative pressure, so that the gas in the inner cavity of the tower body is collected from the positive pressure areas at the two ends of the tower body to the negative pressure area in the middle of the tower body, which not only inhibits the diffusion of regenerated gas to the two ends of the tower body, but also prevents the temperature in the heating cavity from being transmitted to the two ends of the tower body as the gas diffuses. The arrangement of the preheating cavity and the heating cavity can make the tower body form sections according to different temperature intervals, thereby controlling the temperature interval of adsorbent desorption and regeneration. The arrangement of the cooling cavity can cool the adsorbent, which is conducive to the recycling of the adsorbent, reduces the equipment for cooling the adsorbent, and reduces the investment cost. The adsorbent regeneration tower with airflow directional collection function disclosed herein facilitates the collection of regenerated rich gas to the suction port through the effective division of airflow directional collection and temperature intervals in the inner cavity, thereby improving the suction efficiency.

[0013] Optionally, the adsorbent regeneration tower with airflow directional collection function further comprises:

[0014] an inlet valve group, the inlet valve group being arranged at the feed inlet at the top of the tower body, the inlet valve group comprising a first rotary valve and a second rotary valve connected in series; and

[0015] An outlet valve group is provided at the discharge port at the bottom of the tower body, and the outlet valve group includes a third rotary valve and a fourth rotary valve connected in series.

[0016] The inlet valve group and outlet valve group disclosed in the present invention can not only control the amount of adsorbent material entering and exiting the tower body, but also prevent the gas from diffusing to the outside of the tower body through the inlet valve group and the outlet valve group. The inlet valve group and the outlet valve group are both configured as double rotary valves. When the double rotary valves in the inlet valve group and the outlet valve group rotate, they can ensure that the feed pipe at the top of the tower body and the discharge pipe at the bottom of the tower body are both in a blocked state, without affecting the inlet and outlet of the adsorbent.

[0017] Optionally, the inlet valve group is provided with a first air inlet for supplying air to the feed chamber, the first air inlet is provided between the first rotary valve and the second rotary valve, the outlet valve group is provided with a second air inlet for supplying air to the discharge chamber, the second air inlet is provided between the third rotary valve and the fourth rotary valve; and / or

[0018] A third air inlet for supplying air to the feed chamber is provided at the top of the tower body, and the third air inlet is connected to the feed chamber and the air supply assembly to inflate the feed chamber through the air supply assembly. A fourth air inlet for supplying air to the discharge chamber is provided at the bottom of the tower body, and the fourth air inlet is connected to the discharge chamber and the air supply assembly to inflate the discharge chamber.

[0019] The provision of the first and second air inlets in the present disclosure can create a positive pressure inside the inlet and outlet valve blocks, preventing gas within the tower body from entering the inlet and outlet valve blocks, thereby preventing a small amount of regenerated enriched gas that diffuses into the feed and discharge chambers from leaking out of the tower body when the rotary valve rotates. The third and fourth air inlets can directly inflate the feed and discharge chambers, creating a positive pressure therein and causing gas within the tower body to converge toward the degassing chamber. When the first, second, third, and fourth air inlets are arranged simultaneously, the effect of preventing the regenerated enriched gas from diffusing out of the tower body can be further enhanced. At this point, two adjacent positive pressure zones are formed in the feed chamber and inlet valve block at the top of the tower body, ensuring stable air pressure in the two positive pressure zones. Furthermore, the air flow can be further controlled by adjusting the pressure difference between the two positive pressure zones at the top of the tower body. Similarly, two adjacent positive pressure zones are formed in the discharge chamber and outlet valve block at the bottom of the tower body, also ensuring stable air pressure and controlling air flow.

[0020] Optionally, the thickness of the adsorbent layer in the feed chamber is greater than a first threshold value, so as to slow down the diffusion of heat of the adsorbent in the preheating chamber and the heating chamber to above the adsorbent layer in the feed chamber; and / or

[0021] The tower body has a first section corresponding to the preheating chamber, a second section corresponding to the heating chamber, and a third section corresponding to the cooling chamber. The first section is made of stainless steel, the second section is made of ND steel, and the third section is made of carbon steel. Expansion joints are provided between the first section and the second section, and between the second section and the third section.

[0022] In the present disclosure, by making the adsorbent layer in the feed chamber reach a certain thickness, it can be ensured that the temperature of the adsorbent in the heating chamber cannot diffuse to the top of the adsorbent layer in the feed chamber. Since there is a positive pressure zone in the feed chamber, the regenerated rich gas desorbed from the heating chamber will not pass through the adsorbent layer and diffuse to the positive pressure zone. At the same time, it can also prevent the temperature of the feed chamber from being too high, and prevent the adsorbent at room temperature or below room temperature from entering the feed chamber and being heated to cause water mist to appear in the feed chamber.

[0023] By dividing the tower body into sections, the present disclosure can make the materials of different sections meet different working conditions, while reducing manufacturing costs, ensuring the service life of the equipment, and avoiding corrosion and damage to the tower body by regenerated rich gas and high-temperature environment; since the inner cavity of the tower body of the present disclosure has multiple different temperature ranges, the expansion coefficients of different materials are different at different temperatures. Therefore, by setting expansion joints, the stability of the assembled tower body structure can be guaranteed, and extrusion deformation of local sections after thermal expansion can be avoided.

[0024] Optionally, the adsorbent regeneration tower with airflow directional collection function further comprises:

[0025] an upper support plate and a lower support plate, wherein the upper support plate is respectively arranged at the top of each of the preheating chamber, the heating chamber and the cooling chamber, and the lower support plate is respectively arranged at the bottom of each of the preheating chamber, the heating chamber and the cooling chamber, and the circumference of the upper support plate and the lower support plate are both sealed with the circumferential wall of the tower body; and

[0026] A dropping pipe, the dropping pipe is vertically arranged in each of the preheating chamber, the heating chamber and the cooling chamber, the dropping pipes in each chamber are arranged parallel to each other and connected between the upper support plate and the lower support plate, the inner cavity of the dropping pipe forms an adsorbent dropping channel and a heat exchange medium channel is formed between the outer wall of the dropping pipe and the inner wall of the tower body, the heat exchange medium channel includes a preheating medium channel located in the preheating chamber, a heating medium channel located in the heating chamber and a cooling medium channel located in the cooling chamber.

[0027] The drop tube in the present disclosure serves as a drop channel for the adsorbent. The adsorbent can gradually drop in the drop tube, and the heat exchange medium can flow through the heat exchange medium channel formed between the outer wall of the drop tube and the inner wall of the tower body and heat the adsorbent in the drop tube, thereby controlling the temperature of the adsorbent at different positions. After the preheated adsorbent enters the mixing chamber, its residence time in the mixing chamber can be increased, allowing the adsorbents to fully contact and make their temperatures tend to be consistent, reducing the temperature difference between adsorbents at different positions. After the heated adsorbent enters the degassing chamber, its residence time in the degassing chamber can be increased, and the adsorbents can fully contact and make their temperatures tend to be consistent, ensuring that adsorbents at different positions can be fully desorbed and regenerated.

[0028] Optionally, the tower body is provided with a preheating medium inlet for supplying a preheating medium into the preheating medium channel and a preheating medium outlet for discharging the preheating medium, a heating medium inlet for supplying a heating medium into the heating medium channel and a heating medium outlet for discharging the heating medium, and a cooling medium inlet for supplying a cooling medium into the cooling medium channel and a cooling medium outlet for discharging the cooling medium;

[0029] The cooling medium outlet is connected to the preheating medium inlet so that the cooling medium discharged from the cooling medium outlet after heat exchange with the adsorbent in the cooling chamber is supplied to the preheating medium channel for use as a preheating medium for preheating the adsorbent in the preheating chamber. A heating component is provided between the heating medium inlet and the heating medium outlet, and the heating component is used to heat the heating medium output from the heating medium outlet and supply the heated heating medium to the heating medium channel.

[0030] The heat exchange medium flowing out of the cooling medium outlet in the present disclosure can be used to preheat the adsorbent in the preheating chamber, thereby realizing energy recovery and reducing equipment investment.

[0031] Optionally, the discharge chamber includes a constant diameter section and an inverted cone section arranged in the up-down direction, the cross-sectional area of ​​the constant diameter section remains unchanged from top to bottom, and the cross-sectional area of ​​the inverted cone section gradually decreases from top to bottom, a blanking component is provided in the constant diameter section, and a uniform material component is provided in the inverted cone section which is separated from the blanking component in the up-down direction, the blanking component has a plurality of blanking ports, the uniform material component includes a plate body and a plurality of cones provided on the upper surface of the plate body, adjacent cones are arranged at intervals to form a blanking space, the plate body has a material hole, the adsorbent falling from the plurality of blanking ports of the blanking component falls into the blanking space and then falls through the material hole.

[0032] The adsorbent in the constant diameter section in the present disclosure can fall normally, and the blanking component can make the adsorbent in the constant diameter section fall relatively evenly through multiple blanking ports; when the equalizing component is not set, the adsorbent in the inverted cone section has different blanking speeds, the adsorbent in the middle of the inverted cone section has a fast blanking speed, and the adsorbent in the circumference of the inverted cone section has a slow blanking speed. In the present disclosure, by setting the equalizing component, the amount of material filled into different areas of the equalizing component can be adjusted, thereby realizing the adjustment of the blanking speed of different areas on the same cross section in the inverted cone section.

[0033] Optionally, the distribution density of the cones on the plate body gradually decreases from the middle of the plate body to the outer peripheral edge of the plate body; and / or

[0034] The blanking opening of the blanking component is staggered with the conical body; and / or

[0035] The blanking opening of the blanking component is not higher than the top end of the cone.

[0036] The cones in the present disclosure are unevenly distributed on the plate body. The uneven distribution can reasonably adjust the volume of different areas in the material-distributing component that can be used to fill the adsorbent, thereby controlling the blanking amount of different blanking ports in the blanking component, and making the blanking speed of each blanking port tend to be consistent. Since the blanking speed in the middle of the inverted cone section is fast, the cones in the middle of the plate body are arranged relatively more and denser, reducing the amount of adsorbent flowing out of the middle of the material-distributing component. The blanking ports and cones in the present disclosure are staggered, so that the adsorbent falling from the blanking ports can be quickly filled between adjacent cones, avoiding the influence of the cones on the blanking of the blanking ports. The blanking ports in the present disclosure are not higher than the upper end of the cone, and can make full use of the space occupied by the cone to optimize the problem of uneven blanking in different areas, and can also reduce the space occupied by the blanking component and the material-distributing component.

[0037] An adsorbent regeneration system according to the present disclosure comprises:

[0038] A regeneration tower, wherein the regeneration tower is the above-mentioned adsorbent regeneration tower with airflow directional collection function; and

[0039] A detection component is used to detect the temperature and air pressure in the inner cavity of the tower body to adjust the temperature of the heat exchange medium entering the preheating cavity, the heating cavity and the cooling cavity, the material level in the feed cavity, and the amount of gas entering the feed cavity and the discharge cavity.

[0040] The disclosed adsorbent regeneration system can achieve some of the same beneficial effects as those achieved by the aforementioned adsorbent regeneration tower with directional airflow convergence, and will not be further elaborated here. The disclosed adsorbent regeneration system can also control the temperature of different sections within the internal cavity based on detection data from the detection assembly, and adjust the air pressure in the feed and discharge cavities to achieve temperature distribution within the regeneration tower and directional airflow convergence.

[0041] Optionally, the detection component includes:

[0042] a first detection unit, the first detection unit being disposed in the mixing chamber and configured to detect a temperature of the adsorbent in the mixing chamber so as to adjust a temperature of the preheating medium introduced into the preheating chamber;

[0043] a second detection unit, the second detection unit being disposed in the degassing chamber and configured to detect a temperature of the adsorbent in the degassing chamber so as to adjust a temperature of the heating medium introduced into the heating chamber;

[0044] a third detection unit, the third detection unit being disposed in the discharge chamber and configured to detect the temperature of the adsorbent in the discharge chamber to adjust the temperature of the cooling medium flowing into the cooling chamber;

[0045] a fourth detection unit, the fourth detection unit being disposed in the feed cavity and configured to detect a material level in the feed cavity to control the opening or closing of the feed port; and

[0046] The fifth detection unit is respectively arranged in the feed chamber, the discharge chamber, the inlet valve group and the outlet valve group, and is used to detect the pressure in the feed chamber, the discharge chamber, the inlet valve group and the outlet valve group to adjust the amount of air supplied by the air supply component to the feed chamber, the discharge chamber, the inlet valve group and the outlet valve group.

[0047] The various detection units disclosed herein can accurately measure the balanced temperatures of different sections of the tower. By detecting the adsorbent temperatures in the mixing chamber, degassing chamber, and discharge chamber, data detection reliability is increased, enabling better temperature control of each section. By measuring the air pressure within the feed chamber, discharge chamber, inlet valve assembly, and outlet valve assembly, the disclosed invention can ensure that the top and bottom of the tower maintain relatively stable air pressure, preventing the regenerated enriched gas from diffusing from the top and bottom of the tower to the outside of the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] FIG1 is a schematic structural diagram of an adsorbent regeneration tower with an airflow directional collection function according to an embodiment of the present disclosure.

[0049] FIG2 is a schematic structural diagram of an inlet valve group or an outlet valve group in an embodiment of the present disclosure.

[0050] FIG3 is a schematic structural diagram of the air intake cavity in an embodiment of the present disclosure.

[0051] FIG4 is a schematic structural diagram of a preheating chamber in an embodiment of the present disclosure.

[0052] FIG5 is a schematic diagram of the arrangement structure of the blanking component and the material leveling component in an embodiment of the present disclosure.

[0053] FIG6 is a schematic structural diagram of an adsorbent unit in an embodiment of the present disclosure.

[0054] FIG7 is a schematic structural diagram of the barrier component in an embodiment of the present disclosure.

[0055] Figures: 1. Tower body; 11. Feed chamber; 12. Discharge chamber; 121. Constant diameter section; 122. Inverted cone section; 131. Preheating chamber; 1312. Preheating medium inlet; 1313. Preheating medium outlet; 132. Heating chamber; 1322. Heating medium inlet; 1323. Heating medium outlet; 133. Cooling chamber; 1332. Cooling medium inlet; 1333. Cooling medium outlet; 134. Mixing chamber; 135. Degassing chamber; 1351. Suction port; 2. Air supply assembly; 31. Inlet valve group; 311. First air inlet; 312. First rotary valve; 313. Second rotary valve; 32. Outlet valve group; 321. Second air inlet; 322. Third rotary valve; 323. Fourth rotary valve; 33. Third air inlet; 34. Fourth air inlet; 51. Upper support plate; 52. Lower support plate; 53. Blanking pipe; 61. Blanking component; 611. First blanking pipe; 62. Material distribution component; 621. Plate body; 622. Conical body; 71. Adsorbent; 72. Breathable shell; 81. Interlayer space; 82. Flow channel; 83. Isolation tube. DETAILED DESCRIPTION

[0056] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0057] The adsorbent regeneration tower with airflow directional convergence function according to an embodiment of the present disclosure is described below with reference to Figures 1 to 7. The adsorbent regeneration tower with airflow directional convergence function comprises a tower body 1, the inner cavity of the tower body 1 comprising a feed chamber 11, a preheating chamber 131, a mixing chamber 134, a heating chamber 132, a degassing chamber 135, a cooling chamber 133, and a discharge chamber 12 arranged in sequence along a vertical direction. A feed port is provided at the top of the tower body 1, through which adsorbent saturated with adsorption first enters the feed chamber 11 and accumulates in the feed chamber 11 to form an adsorbent layer of a certain thickness. A discharge port is provided at the bottom of the tower body 1, through which the adsorbent that has undergone desorption and regeneration enters the discharge chamber 12 and is discharged from the discharge port.

[0058] The tower body 1 is provided with a suction port 1351 , which is communicated with the degassing chamber 135 . The adsorbent in the feed chamber 11 first enters the preheating chamber 131 for preheating and then enters the mixing chamber 134. When the preheating temperature of the adsorbent in the preheating chamber 131 is uneven, the adsorbents in the mixing chamber 134 can conduct temperature conduction with each other, thereby making the adsorbent temperature uniform. The setting of the preheating chamber 131 can increase the temperature of the adsorbent and reduce the temperature rise range of the adsorbent in the heating chamber 132, so as to facilitate more accurate zoning control of the adsorbent desorption and regeneration range. The adsorbent in the mixing chamber 134 continues to flow downward into the heating chamber 132. The heating chamber 132 heats the adsorbent and makes the temperature of the adsorbent reach the desorption and regeneration temperature. Then the adsorbent enters the degassing chamber 135. In the degassing chamber 135, not only can the temperatures of the adsorbents with certain differences be made uniform, but the regenerated rich gas desorbed and regenerated from the adsorbent can also be extracted through the suction port 1351. At the same time, negative pressure is formed in the degassing chamber 135, which facilitates the gathering of the regenerated rich gas and improves the suction efficiency. The cooling chamber 133 is used to cool the adsorbent, thereby facilitating the transportation and recycling of the adsorbent discharged from the regeneration tower, reducing external equipment for adsorbent cooling, and lowering the cost of adsorbent regeneration.

[0059] The feed chamber 11 and the discharge chamber 12 are connected to the air supply component 2 to inflate the feed chamber 11 and the discharge chamber 12 respectively. As the air supply component 2 continues to inflate, the feed chamber 11 and the discharge chamber 12 can maintain positive pressure, preventing the regenerated rich gas at the desorption and regeneration point in the adsorbent from diffusing to the two ends of the tower body 1, and allowing the regenerated rich gas to gather in the degassing chamber 135.

[0060] The adsorbent regeneration tower with airflow directional convergence function of the embodiment of the present disclosure divides the inner cavity of the tower body 1 into sections and inflates the feed cavity 11 at the top of the tower body 1 and the discharge cavity 12 at the bottom of the tower body 1 to maintain positive pressure at both ends of the tower body 1, and sucks the regenerated rich gas from the suction port 1351 until negative pressure is present in the degassing chamber 135, so that the gas in the inner cavity of the tower body 1 is converged from the positive pressure areas at both ends of the tower body 1 to the negative pressure area in the middle of the tower body 1, which not only inhibits the regeneration gas from diffusing to the two ends of the tower body 1, but also prevents the temperature in the heating cavity 132 from being transmitted to the two ends of the tower body 1 as the gas diffuses.

[0061] Furthermore, the arrangement of the preheating chamber 131, the heating chamber 132 and the cooling chamber 133 can form segment divisions according to different temperature ranges, which is more convenient for controlling the temperature range of adsorbent desorption and regeneration. By setting the preheating chamber 131 and the cooling chamber 133, not only the adsorbent desorption and regeneration is controlled in the heating chamber 132 and the degassing chamber 135, but also the positive pressure formed by filling the gas at both ends of the tower body 1 can be coordinated to prevent the regenerated gas from diffusing to the upper and lower ends of the tower body 1, thereby prompting the regenerated rich gas generated by desorption and regeneration to be directionally gathered to the degassing section, thereby improving the suction efficiency.

[0062] The gas filled into the feed chamber 11 and the discharge chamber 12 through the gas supply assembly 2 is nitrogen or an inert gas, which prevents the introduced gas from reacting in the tower body 1 and can better replace the regenerated rich gas in the adsorbent.

[0063] As shown in Figures 1 and 2, in some embodiments, the adsorbent regeneration tower with airflow directional collection function of the embodiments of the present disclosure also includes an inlet valve group 31 and an outlet valve group 32. The inlet valve group 31 is arranged at the feed inlet at the top of the tower body 1, and the inlet valve group 31 includes a first rotary valve 312 and a second rotary valve 313 connected in series with each other. The outlet valve group 32 is arranged at the discharge port at the bottom of the tower body 1, and the outlet valve group 32 includes a third rotary valve 322 and a fourth rotary valve 323 connected in series with each other.

[0064] Specifically, the function of a single rotary valve is to prevent the airflow on both sides of the rotary valve from being conducted while achieving continuous feeding and discharging, thereby avoiding leakage of airflow pressure. Two rotary valves are provided in the inlet valve group 31 and the outlet valve group 32 in the embodiment of the present disclosure, which can further ensure that the air pressure in the tower body 1 does not leak, so that the gas filled in the feed chamber 11 and the discharge chamber 12 can maintain a continuous and stable air pressure. That is to say, the inlet valve group 31 and the outlet valve group 32 can not only control the amount of adsorbent material entering and exiting the tower body 1, but also prevent the gas from diffusing to the outside of the tower body 1 through the inlet valve group 31 and the outlet valve group 32. When working, the double rotary valves in the inlet valve group 31 and the outlet valve group 32 can act alternately, so that the feed pipe at the feed port at the top of the tower body 1 and the discharge pipe at the discharge port at the bottom of the tower body 1 are both in a blocked state, and at the same time will not affect the feeding and discharging of the adsorbent.

[0065] As shown in Figure 2, in some embodiments, the inlet valve group 31 is provided with a first air inlet 311, and the first air inlet 311 is provided between the first rotary valve 312 and the second rotary valve 313; the outlet valve group 32 is provided with a second air inlet 321, and the second air inlet 321 is provided between the third rotary valve 322 and the fourth rotary valve 323.

[0066] It should be noted that the setting of the first air inlet 311 and the second air inlet 321 can form a positive pressure inside the inlet valve group 31 and the outlet valve group 32, thereby preventing the gas in the tower body 1 from entering the inlet valve group 31 and the outlet valve group 32. When the regenerated rich gas diffuses into the feed chamber 11 and the discharge chamber 12, since the inlet valve group 31 and the outlet valve group 32 are filled with gas that maintains positive pressure, the gas in the feed chamber 11 and the discharge chamber 12 can be further prevented from diffusing into the feed pipe and the discharge pipe, thereby improving the blocking effect of the regenerated rich gas from diffusing out of the tower body 1.

[0067] As shown in Figure 1, in some embodiments, a third air inlet 33 for supplying air to the feed chamber 11 is provided at the top of the tower body 1, and the third air inlet 33 is connected to the feed chamber 11 and the air supply component 2 to inflate the feed chamber 11 through the air supply component 2. A fourth air inlet 34 for supplying air to the discharge chamber 12 is provided at the bottom of the tower body 1, and the fourth air inlet 34 is connected to the discharge chamber 12 and the air supply component 2 to inflate the discharge chamber 12.

[0068] That is, in the embodiment of the present disclosure, the feed chamber 11 and the discharge chamber 12 are directly inflated through the third air inlet 33 and the fourth air inlet 34 , so that a positive pressure is formed in the feed chamber 11 and the discharge chamber 12 .

[0069] When the first air inlet 311 , the second air inlet 321 , the third air inlet 33 and the fourth air inlet 34 are provided at the same time, the effect of preventing the regenerated rich gas from diffusing out of the tower body 1 can be further improved.

[0070] Specifically, two adjacent positive pressure zones are formed in the feed chamber 11 and the inlet valve group 31 at the top of the tower body 1. While ensuring the stability of the air pressure in the two positive pressure zones, the air pressure difference between the two positive pressure zones of the feed chamber 11 and the inlet valve group 31 can be adjusted to further control the flow direction of the airflow. Similarly, two adjacent positive pressure zones are also formed in the discharge chamber 12 and the outlet valve group 32 at the bottom of the tower body 1. While ensuring the stability of the air pressure in the two positive pressure zones, the air pressure difference between the two positive pressure zones of the discharge chamber 12 and the outlet valve group 32 can be adjusted to further control the flow direction of the airflow.

[0071] The adsorbent disclosed herein is used for adsorption purification of low-temperature flue gas. The adsorbent contacts the low-temperature flue gas to adsorb and purify the flue gas. In application, the flue gas is cooled to low-temperature flue gas at room temperature or below room temperature. Under the low-temperature condition, the adsorbent adsorbs the oxides in the flue gas, thereby improving the purification effect.

[0072] The low temperature in the embodiment of the present disclosure is room temperature or below room temperature. Optionally, the low temperature is below zero degrees Celsius. More optionally, the low temperature is -20°C to -10°C.

[0073] After the adsorbent adsorbs low-temperature flue gas, the temperature of the adsorbent will be below room temperature. If low-temperature adsorption purification is performed on flue gas below zero degrees, the temperature of the adsorbent entering the feed chamber 11 will also be below zero degrees. When the temperature of the adsorbent with a higher temperature diffuses to the upper layer of the adsorbent layer in the feed chamber 11, it will cause the temperature of the feed chamber 11 to rise. When the adsorbent at room temperature or the adsorbent below zero enters the feed chamber 11, a large amount of water vapor will be generated in the feed chamber 11 and a large amount of water droplets will condense, making it impossible for the regeneration tower to maintain normal and orderly operation.

[0074] Therefore, as shown in Figures 1 and 3, in some embodiments, the thickness of the adsorbent layer in the feed chamber 11 is greater than the first threshold to slow down the heat diffusion of the adsorbent in the preheating chamber 131 and the heating chamber 132 to above the adsorbent layer in the feed chamber 11.

[0075] The feed chamber 11 includes a column section of equal diameter. The inner diameter of the column section and the heating chamber 132 are the same. The thickness of the adsorbent layer accumulated in the column section must be greater than the first threshold value. At this time, it can ensure that the temperature diffusion of the adsorbent has a relatively consistent blocking effect within the entire cross-sectional range.

[0076] Optionally, since the adsorbent has a stacking angle after entering the feed chamber 11 from the feed port, a distribution device can be set to make the thickness of the adsorbent layer in the feed chamber 11 uniform. When the distribution device is not set, it is necessary to ensure that the feed chamber 11 has a sufficient height so that the minimum thickness of the stacked adsorbent layer is greater than the first threshold.

[0077] To reasonably determine the range of the first threshold, it is necessary to comprehensively determine the thickness of the adsorbent layer in the feed chamber 11 based on factors such as the thermal conductivity of the adsorbent, the temperature of the adsorbent entering the feed chamber 11 through the feed port, the air pressure in the feed chamber 11, and the temperature of the heating chamber 132, so as to avoid the temperature of the adsorbent in the heating chamber 132 being transferred to the upper part of the adsorbent layer in the feed chamber 11.

[0078] Optionally, the first threshold is 200 mm. Furthermore, the thickness of the adsorbent layer is 200 mm to 600 mm. For example, the thickness of the adsorbent layer is 200 mm, 370 mm, 520 mm or 600 mm. If the thickness of the adsorbent layer is less than 200 mm, it is easy for the temperature of the adsorbent heated in the preheating chamber 131 to be transmitted through the adsorbent layer to the upper side of the adsorbent layer. When the pressure or temperature control of some sections in the tower body 1 is abnormal, it is easy to cause the temperature in the feed chamber 11 to change dramatically, and the resistance to abnormal factors is poor and the practicality is poor. If the thickness of the adsorbent layer is greater than 600 mm, the size of the feed chamber 11 will be too large, and the adsorbent will stay in the feed chamber 11 for too long. It is easy to produce uncontrollable factors due to the excessive accumulation of adsorbent and subsequent processing is difficult, thereby affecting the adsorbent entering the preheating chamber 131.

[0079] In the embodiment of the present disclosure, after the adsorbent layer in the feed chamber 11 reaches a set thickness, it is ensured that the temperature of the adsorbent in the preheating chamber 131 cannot diffuse to the top of the adsorbent layer in the feed chamber 11. Since there is a positive pressure zone in the feed chamber 11, the regenerated rich gas desorbed from the preheating chamber 131 and the heating chamber 132 will not pass through the adsorbent layer and diffuse to the positive pressure zone. At the same time, it can also prevent the temperature of the feed chamber 11 from being too high, and prevent the adsorbent at room temperature or below room temperature from entering the feed chamber 11, causing water mist to condense into water droplets in the feed chamber 11.

[0080] In some embodiments, the tower body 1 has at least a first section corresponding to the preheating chamber 131, a second section corresponding to the heating chamber 132, and a third section corresponding to the cooling chamber 133. Since the temperatures of the adsorbent after preheating, heating and cooling are different, the adsorbent after heating in the heating chamber 132 will also desorb highly corrosive gases such as sulfur dioxide. Considering the manufacturing cost, different materials are selected for different sections. Specifically, the material of the first section is stainless steel, the second section is ND steel, and the third section is carbon steel. Different materials have different expansion coefficients, and the temperature environments of different sections are different. Therefore, expansion joints are provided between the first section and the second section, and between the second section and the third section.

[0081] That is to say, since different sections of the tower body 1 correspond to different temperatures and gas compositions, it is necessary to ensure that the corresponding sections can withstand high temperatures and gas corrosion. The division of the tower body 1 in the disclosed embodiment can enable the materials of different sections to meet different working conditions. While ensuring the performance and service life of the equipment, the manufacturing cost is reduced, and the tower body 1 can withstand the corrosion and damage of the regenerated rich gas and high temperature environment to the tower body 1.

[0082] Furthermore, since the inner cavity of the tower body 1 disclosed herein has multiple different temperature ranges and the expansion coefficients of different materials are different at different temperatures, expansion joints are provided to ensure the structural stability of the assembled tower body 1 and avoid extrusion deformation of local sections after thermal expansion.

[0083] Optionally, the temperature of the adsorbent in the mixing chamber 134 is close to the temperature of the adsorbent in the preheating section, so the mixing chamber 134 is arranged in the first section, and the temperature of the adsorbent in the degassing chamber 135 is close to the temperature of the adsorbent in the heating section, so the degassing chamber 135 is arranged in the second section.

[0084] Optionally, the first section, the second section and the third section can also be composed of multiple sections to facilitate manufacturing, assembly and lifting. If the weight of a single section is too large, heavy lifting equipment is required, which increases the assembly cost and construction difficulty.

[0085] Optionally, the tower body 1 also includes a fourth section and a fifth section, the fourth section corresponds to the feed chamber 11, and the fifth section corresponds to the discharge chamber 12. In order to facilitate the production and hoisting of each section of the tower body 1 and to meet the working conditions of each section of the tower body 1, the tower body 1 can be further segmented.

[0086] As shown in Figures 1 to 4, in some embodiments, the adsorbent regeneration tower with airflow directional convergence function includes an upper support plate 51, a lower support plate 52 and a plurality of drop pipes 53. The upper support plate 51 is respectively arranged at the top of each cavity in the preheating cavity 131, the heating cavity 132 and the cooling cavity 133, and the lower support plate 52 is respectively arranged at the bottom of each cavity in the preheating cavity 131, the heating cavity 132 and the cooling cavity 133. The circumference of the upper support plate 51 and the lower support plate 52 are both sealed with the circumferential wall of the tower body 1, and the drop pipe 53 is arranged along the circumference of the tower body 1. The dropping pipes 53 are arranged vertically in each of the preheating chamber 131, the heating chamber 132 and the cooling chamber 133. The dropping pipes 53 in each chamber are arranged parallel to each other and connected between the upper support plate 51 and the lower support plate 52. The inner cavity of the dropping pipe 53 forms an adsorbent dropping channel and a heat exchange medium channel is formed between the outer wall of the dropping pipe 53 and the inner wall of the tower body 1. The heat exchange medium channel includes a preheating medium channel located in the preheating chamber 131, a heating medium channel located in the heating chamber 132 and a cooling medium channel located in the cooling chamber 133.

[0087] FIG4 is a schematic diagram showing the arrangement of the upper support plate 51 , the lower support plate 52 and the blanking tube 53 in the preheating chamber 131 .

[0088] Among them, the structure of the upper support plate 51, the lower support plate 52 and the drop pipe 53 in the heating chamber 132 and the cooling chamber 133 is the same as that of the preheating chamber 131. The drop pipe 53 in the embodiment of the present disclosure serves as a drop channel for the adsorbent. The adsorbent can gradually drop in the drop pipe 53, and the heat exchange medium can flow through the heat exchange medium channel formed between the outer wall of the drop pipe 53 and the inner wall of the tower body 1 and heat the adsorbent in the drop pipe 53, thereby controlling the temperature of the adsorbent at different positions. After the preheated adsorbent enters the mixing chamber 134, it can increase the residence time in the mixing chamber 134, so that the adsorbents are fully in contact and the temperatures are consistent with each other, reducing the temperature difference of the adsorbents at different positions. After the heated adsorbent enters the degassing chamber 135, it can increase the residence time in the degassing chamber 135, and the adsorbents are fully in contact and the temperatures are consistent with each other, so as to ensure that the adsorbents at different positions can be fully desorbed and regenerated.

[0089] Optionally, a baffle is arranged in the heat exchange medium channel to increase the residence time of the heat exchange medium in the heat exchange medium channel and the uniformity of the medium distribution, so that the heat exchange medium and the adsorbent in the corresponding drop tube 53 can fully exchange heat, and the adsorbents in different drop tubes 53 can be heated relatively uniformly. Optionally, the baffle is a plurality of groups of louver-type baffles arranged at intervals in the up and down directions.

[0090] As shown in FIG7 , optionally, a barrier component is arranged in the degassing chamber 135 , the barrier component having a barrier space 81 and a flow channel 82 , the barrier space 81 is communicated with the suction port 1351 , and the barrier space 81 and the flow channel 82 are arranged at intervals.

[0091] The adsorbent flows from the top of the interlayer space 81 to the bottom of the interlayer space 81 through the flow channel 82, and the regenerated rich gas desorbed from the adsorbent is discharged from the suction port 1351 through the interlayer space 81. Specifically, the interlayer component includes a plurality of isolation tubes 83, and the isolation tubes 83 are arranged vertically. The tube cavities of the isolation tubes 83 form the flow channel 82, and at least a portion of adjacent isolation tubes 83 are arranged at intervals to form an interlayer space. The upper ends of the plurality of isolation tubes 83 are connected to each other to prevent the adsorbent from falling into the interlayer space 81 outside the drop pipe.

[0092] As shown in Figure 1, in some embodiments, the tower body 1 is provided with a preheating medium inlet 1312 for supplying preheating medium into the preheating medium channel and a preheating medium outlet 1313 for discharging the preheating medium, a heating medium inlet 1322 for supplying heating medium into the heating medium channel and a heating medium outlet 1323 for discharging the heating medium, and a cooling medium inlet 1332 for supplying cooling medium into the cooling medium channel and a cooling medium outlet 1333 for discharging the cooling medium.

[0093] The cooling medium outlet 1333 is connected to the preheating medium inlet 1312 to supply the cooling medium discharged from the cooling medium outlet 1333 after heat exchange with the adsorbent in the cooling chamber 133 to the preheating medium channel for use as a preheating medium for preheating the adsorbent in the preheating chamber 131. A heating component is provided between the heating medium inlet 1322 and the heating medium outlet 1323. The heating component is used to heat the heating medium output from the heating medium outlet 1323 and supply the heated heating medium to the heating medium channel.

[0094] The cooling medium flowing out of the cooling medium outlet 1333 in the embodiment of the present disclosure is used to preheat the adsorbent in the preheating chamber 131, which can realize energy recovery and reduce equipment investment.

[0095] Optionally, the cooling medium entering the cooling medium inlet 1332 is room temperature air. The room temperature air indirectly exchanges heat with the adsorbent in the cooling chamber 133 and flows out from the cooling medium outlet 1333, becoming a preheating medium that can preheat the adsorbent in the preheating chamber 131. The preheating medium is connected to the preheating medium inlet 1312 through a pipeline, and is discharged from the preheating medium outlet 1313 after exchanging heat with the adsorbent in the preheating chamber 131.

[0096] As shown in Figure 5, in some embodiments, the discharge chamber 12 includes a constant diameter section 121 and an inverted cone section 122 arranged in the up and down directions. The cross-sectional area of ​​the constant diameter section 121 remains unchanged from top to bottom, and the cross-sectional area of ​​the inverted cone section 122 gradually decreases from top to bottom.

[0097] A blanking component 61 is provided in the constant diameter section 121, and a uniform material component 62 is provided in the inverted cone section 122, which is separated from the blanking component 61 in the up and down directions. The blanking component 61 has multiple blanking ports, and the uniform material component 62 includes a plate body 621 and multiple cones 622 provided on the upper surface of the plate body 621. Adjacent cones 622 are arranged at intervals to form a blanking space. The plate body 621 has a material hole. The adsorbent falling from the multiple blanking ports of the blanking component 61 falls into the blanking space and then falls through the material hole.

[0098] That is to say, the adsorbent in the constant diameter section 121 can fall normally, and the blanking component 61 can make the adsorbent in the constant diameter section 121 flow downward through multiple blanking ports. When the equalizing component 62 is not set, the adsorbent blanking speed in the inverted cone section 122 is different. The adsorbent in the middle of the inverted cone section 122 has a fast blanking speed, and the adsorbent in the circumference of the inverted cone section 122 has a slow blanking speed. In the embodiment of the present disclosure, the equalizing component 62 is set to form a blanking space between the cones 622, so as to adjust the volume of the adsorbent filled into the blanking space in different areas of the equalizing component 62, thereby determining the amount of material accumulated in the blanking space of the corresponding area, and then realizing the adjustment of the blanking speed of different areas on the same cross section in the inverted cone section 122.

[0099] Optionally, the blanking component 61 includes a plurality of first blanking pipes 611, which are arranged vertically, and the plurality of first blanking pipes 611 are arranged in parallel and at intervals, and the upper parts of the first blanking pipes 611 are connected to each other to prevent the adsorbent from flowing between adjacent first blanking pipes 611, and the adsorbent flows to the uniform material component 62 through the first blanking pipes 611.

[0100] Optionally, the constant diameter section 121 of the discharge chamber 12 is a cylindrical section or a prismatic section, and the inverted cone section 122 is a conical section or a pyramidal section. The inverted cone section 122 can make the adsorbent converge toward the discharge port, thereby facilitating the discharge of the adsorbent.

[0101] In some embodiments, the density of the cones 622 distributed on the plate 621 gradually decreases from the middle of the plate 621 to the outer edge of the plate 621 .

[0102] That is to say, the spacing between the cones 622 near the middle of the plate body 621 is relatively small, and a relatively large number of cones 622 are arranged per unit area. The spacing between the cones 622 near the circumference of the plate body 621 is relatively large, and a relatively small number of cones 622 are arranged per unit area.

[0103] The cones 622 in the embodiment of the present disclosure are unevenly distributed on the plate body 621. The uneven distribution can reasonably adjust the volume of different areas in the material-distributing component 62 that can be used to fill the adsorbent, thereby controlling the blanking amount of different blanking ports in the blanking component 61, and making the blanking speed of each blanking port tend to be consistent. Since the blanking speed in the middle of the inverted cone section 122 is fast, the cones 622 in the middle of the plate body 621 are arranged relatively more and more densely, thereby reducing the amount of adsorbent material flowing out from the middle of the material-distributing component 62.

[0104] As shown in Figure 5, in some embodiments, the blanking port of the blanking component 61 is staggered with the cone 622, so that the adsorbent flowing out of the blanking port is filled between adjacent cones 622, so that the conical material pile formed on the plate 621 can be staggered with the cone 622.

[0105] That is to say, the blanking port and the cone 622 in the embodiment of the present disclosure are staggered so that the adsorbent falling from the blanking port can be quickly filled between adjacent cones 622, avoiding the cone 622 affecting the blanking of the blanking port.

[0106] As shown in Figure 5, in some embodiments, the blanking port of the blanking component 61 is not higher than the top of the cone 622, so that the space occupied by the cone 622 can be fully utilized to optimize the problem of uneven blanking in different areas, and the space occupied by the blanking component 61 and the equalizing component 62 can also be reduced.

[0107] As shown in FIG6 , the adsorbent 71 in the embodiment of the present disclosure can be a granular or powdered adsorbent 71, or an adsorbent 71 body made of powdered or granular adsorbent 71, such as a spherical body or a cylindrical body formed by a binder of powdered or granular adsorbent 71. Of course, a protective shell can be further formed on the outside of the adsorbent 71 body, such as a breathable membrane covering the outside of the adsorbent 71 body, to improve the strength of the adsorbent 71 body. The adsorbent 71 can be filled in a breathable outer shell 72 to form an adsorbent 71 unit, wherein the breathable outer shell 72 has air holes, and the flue gas can enter the breathable outer shell 72 through the air holes. The flue gas can pass through the gaps between adjacent adsorbents 71 and / or the holes of the adsorbent 71 itself, thereby reducing direct collisions, friction and wear between the adsorbents 71, and the generation of dust. The breathable outer shell 72 can be in the shape of a rotating body such as a sphere or a cylinder, wherein the diameter of the adsorption unit is 10 mm to 100 mm, and the diameter of the adsorbent 71 is 1 mm to 10 mm.

[0108] According to an embodiment of the present disclosure, the adsorbent regeneration system includes a regeneration tower and a detection component. The regeneration tower is an adsorbent regeneration tower with an airflow directional collection function as in any of the above embodiments. The detection component is used to detect the temperature and air pressure in the inner cavity of the tower body 1 to adjust the temperature of the heat exchange medium entering the preheating chamber 131, the heating chamber 132 and the cooling chamber 133, the material level fed into the feed chamber 11, and the amount of gas entering the feed chamber 11 and the discharge chamber 12.

[0109] The adsorbent regeneration system of the embodiment of the present disclosure can achieve some beneficial effects. In addition to the same effects as those achieved by the adsorbent regeneration tower with airflow directional convergence function in the above-mentioned embodiment, it can also rely on the detection data of the detection component to control the temperature of different sections in the tower body 1 and adjust the air pressure of the feed chamber 11 and the discharge chamber 12, thereby realizing the temperature zone distribution and airflow directional convergence in the regeneration tower body 1.

[0110] In some embodiments, the detection assembly includes a first detection unit, a second detection unit, a third detection unit, a fourth detection unit, and a fifth detection unit.

[0111] The first detection unit is arranged in the mixing chamber 134, and is used to detect the temperature of the adsorbent in the mixing chamber 134, thereby adjusting the temperature of the preheating medium that heats the adsorbent in the preheating chamber 131. The second detection unit is arranged in the degassing chamber 135, and is used to detect the temperature of the adsorbent in the degassing chamber 135, thereby adjusting the temperature of the heating medium that heats the adsorbent in the heating chamber 132. The third detection unit is arranged in the discharge chamber 12, and is used to detect the temperature of the adsorbent in the discharge chamber 12, thereby adjusting the temperature of the cooling medium that cools the adsorbent in the cooling chamber 133.

[0112] The fourth detection unit is provided in the feed cavity 11 and is used to detect the material level in the feed cavity 11 and thereby control the opening or closing of the feed port.

[0113] The four fifth detection units are respectively arranged in the feed chamber 11, the discharge chamber 12, the inlet valve group 31 and the outlet valve group 32, and are used to detect the pressure in the feed chamber 11, the discharge chamber 12, the inlet valve group 31 and the outlet valve group 32, and then adjust the amount of gas supplied by the air supply component 2 to the feed chamber 11, the discharge chamber 12, the inlet valve group 31 and the outlet valve group 32 respectively.

[0114] The setting of each detection unit in the embodiment of the present disclosure can not only accurately measure the balanced temperature of different sections in the tower body 1, but also avoid the problem of inaccurate data detection caused by unreasonable setting of detection points. For example, the heat exchange in local areas of the preheating chamber 131, the heating chamber 132 and the cooling chamber 133 is uneven. If the monitoring points are arranged in the preheating chamber 131, the heating chamber 132 or the cooling chamber 133, it will cause data distortion, which is not conducive to the control of the temperature of a large interval. The present disclosure can ensure that the top and bottom of the tower body 1 maintain a relatively stable air pressure by measuring the air pressure in the feed chamber 11, the discharge chamber 12, the inlet valve group 31 and the outlet valve group 32, thereby preventing the regenerated rich gas from diffusing from the top and bottom of the tower body 1 to the outside of the tower body 1.

[0115] Optionally, the first detection unit, the second detection unit, and the third detection unit are all temperature detection sensors, the fourth detection unit may be an infrared detection sensor, and the fifth detection unit may be a pressure gauge.

[0116] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0117] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0118] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0119] In this disclosure, unless otherwise expressly provided, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0120] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean 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 disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0121] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present disclosure.

Claims

1. An adsorbent regeneration tower with airflow directional collection function, comprising: A tower body, wherein the inner cavity of the tower body has a feed chamber, a preheating chamber, a mixing chamber, a heating chamber, a degassing chamber, a cooling chamber and a discharge chamber which are arranged in sequence in the vertical direction; a feed port is provided at the top of the tower body for inputting an adsorbent saturated with adsorption into the feed chamber to form an adsorbent layer in the feed chamber; a discharge port is provided at the bottom of the tower body for discharging the regenerated adsorbent from the discharge chamber; a suction port is provided on the tower body, and the suction port is communicated with the degassing chamber for extracting the regenerated rich gas from the adsorbent in the degassing chamber and forming a negative pressure in the degassing chamber; An air supply component is connected to the feed chamber and the discharge chamber respectively, and is used to inflate the feed chamber and the discharge chamber and keep the feed chamber and the discharge chamber at a positive pressure so that the regenerated rich gas is collected in the degassing chamber.

2. The adsorbent regeneration tower with airflow directional collection function according to claim 1, further comprising: An inlet valve group, the inlet valve group is arranged at the feed inlet at the top of the tower body, and the inlet valve group includes a first rotary valve and a second rotary valve connected in series with each other; and An outlet valve group is arranged at the discharge port at the bottom of the tower body, and the outlet valve group includes a third rotary valve and a fourth rotary valve connected in series.

3. The adsorbent regeneration tower with airflow directional collection function according to claim 2, wherein the inlet valve group is provided with a first air inlet for supplying air to the feed chamber, the first air inlet is arranged between the first rotary valve and the second rotary valve, the outlet valve group is provided with a second air inlet for supplying air to the discharge chamber, the second air inlet is arranged between the third rotary valve and the fourth rotary valve; and / or A third air inlet for supplying air to the feed chamber is provided at the top of the tower body, and the third air inlet is connected to the feed chamber and the air supply assembly to inflate the feed chamber through the air supply assembly. A fourth air inlet for supplying air to the discharge chamber is provided at the bottom of the tower body, and the fourth air inlet is connected to the discharge chamber and the air supply assembly to inflate the discharge chamber.

4. The adsorbent regeneration tower with airflow directional convergence function according to any one of claims 1 to 3, wherein the thickness of the adsorbent layer in the feed chamber is greater than a first threshold value to slow down the heat diffusion of the adsorbent in the preheating chamber and the heating chamber to above the adsorbent layer in the feed chamber; and / or The tower body comprises a first section corresponding to the preheating chamber, a second section corresponding to the heating chamber and a third section corresponding to the cooling chamber. The first section is made of stainless steel, the second section is made of ND steel, and the third section is made of carbon steel. Expansion joints are provided between the first section and the second section, and between the second section and the third section.

5. The adsorbent regeneration tower with airflow directional collection function according to any one of claims 1 to 4, further comprising: An upper support plate and a lower support plate, wherein the upper support plate is respectively arranged at the top of each of the preheating chamber, the heating chamber and the cooling chamber, and the lower support plate is respectively arranged at the bottom of each of the preheating chamber, the heating chamber and the cooling chamber, and the circumference of the upper support plate and the lower support plate are both sealed and connected to the circumferential wall of the tower body; and A dropping pipe, wherein the dropping pipe is vertically arranged in each of the preheating chamber, the heating chamber and the cooling chamber, the dropping pipes in each chamber are arranged parallel to each other and connected between the upper support plate and the lower support plate, the inner cavity of the dropping pipe forms an adsorbent dropping channel and a heat exchange medium channel is formed between the outer wall of the dropping pipe and the inner wall of the tower body, the heat exchange medium channel includes a preheating medium channel located in the preheating chamber, a heating medium channel located in the heating chamber and a cooling medium channel located in the cooling chamber.

6. The adsorbent regeneration tower with airflow directional collection function according to claim 5, wherein the tower body is provided with a preheating medium inlet for supplying a preheating medium into the preheating medium channel and a preheating medium outlet for discharging the preheating medium, a heating medium inlet for supplying a heating medium into the heating medium channel and a heating medium outlet for discharging the heating medium, and a cooling medium inlet for supplying a cooling medium into the cooling medium channel and a cooling medium outlet for discharging the cooling medium; The cooling medium outlet is connected to the preheating medium inlet so that the cooling medium discharged from the cooling medium outlet after heat exchange with the adsorbent in the cooling chamber is supplied to the preheating medium channel for use as a preheating medium for preheating the adsorbent in the preheating chamber. A heating component is provided between the heating medium inlet and the heating medium outlet, and the heating component is used to heat the heating medium output from the heating medium outlet and supply the heated heating medium to the heating medium channel.

7. An adsorbent regeneration tower with airflow directional convergence function according to any one of claims 1-6, wherein the discharge chamber includes a constant diameter section and an inverted cone section arranged in the up-down direction, the cross-sectional area of ​​the constant diameter section remains unchanged in the direction from top to bottom, and the cross-sectional area of ​​the inverted cone section gradually decreases in the direction from top to bottom, a blanking component is provided in the constant diameter section, a uniform material component separated from the blanking component in the up-down direction is provided in the inverted cone section, the blanking component has a plurality of blanking ports, the uniform material component includes a plate body and a plurality of cones provided on the upper surface of the plate body, adjacent cones are arranged at intervals to form a blanking space, the plate body has a material hole, and the adsorbent dropped from the plurality of blanking ports of the blanking component falls into the blanking space and then falls through the material hole.

8. The adsorbent regeneration tower with airflow directional collection function according to claim 7, wherein the density of the cones distributed on the plate body gradually decreases from the middle of the plate body to the outer peripheral edge of the plate body; and / or The blanking opening of the blanking component is staggered with the conical body; and / or The blanking opening of the blanking component is not higher than the top end of the cone.

9. An adsorbent regeneration system, characterized in that: include: A regeneration tower, wherein the regeneration tower is an adsorbent regeneration tower with a gas flow directional collection function according to any one of claims 1 to 8; and A detection component is used to detect the temperature and air pressure in the inner cavity of the tower body to adjust the temperature of the heat exchange medium entering the preheating cavity, the heating cavity and the cooling cavity, the material level in the feed cavity, and the amount of gas entering the feed cavity and the discharge cavity.

10. The adsorbent regeneration system according to claim 9, characterized in that: The detection component comprises: a first detection unit, the first detection unit being disposed in the mixing chamber and used for detecting the temperature of the adsorbent in the mixing chamber to adjust the temperature of the preheating medium introduced into the preheating chamber; a second detection unit, the second detection unit being disposed in the degassing chamber and used for detecting the temperature of the adsorbent in the degassing chamber to adjust the temperature of the heating medium introduced into the heating chamber; A third detection unit, the third detection unit is arranged in the discharge chamber, and is used to detect the temperature of the adsorbent in the discharge chamber to adjust the temperature of the cooling medium passing into the cooling chamber; a fourth detection unit, the fourth detection unit being disposed in the feed cavity and configured to detect a material level in the feed cavity to control the opening or closing of the feed port; and The fifth detection unit is respectively arranged in the feed chamber, the discharge chamber, the inlet valve group and the outlet valve group, and is used to detect the pressure in the feed chamber, the discharge chamber, the inlet valve group and the outlet valve group to adjust the amount of gas supplied by the gas supply component to the feed chamber, the discharge chamber, the inlet valve group and the outlet valve group.

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