An intermittent adsorption and desorption device for waste gas treatment

Abstract

This application relates to the technical field of waste gas treatment, and discloses an intermittent adsorption and desorption device for waste gas treatment, which includes a tank body; a plurality of adsorption members, which are vertically and spaced apart in the tank body; a waste gas inlet pipe, which is communicated with one end of the tank body; a waste gas outlet pipe, which is communicated with the other end of the tank body; a hot gas inlet pipe, which is communicated with one end of the tank body; a hot gas outlet pipe, which is communicated with the other end of the tank body; and a cooling pipe, which is coiled around the outer wall of the tank body and is passed through circulating cooling water; wherein, the waste gas inlet pipe and the waste gas outlet pipe are opened and closed simultaneously, the hot gas inlet pipe and the hot gas outlet pipe are opened and closed simultaneously, and only one of the waste gas inlet pipe and the hot gas inlet pipe is opened within the same time period. This application can improve the efficiency of waste gas treatment.

Description

Technical Field

[0001] This application relates to the technical field of waste gas treatment, and particularly relates to an intermittent adsorption and desorption device for waste gas treatment. Background Art

[0002] Currently, the adsorption method using adsorbents is often used to adsorb impurities and harmful substances in waste gas. The adsorbent is placed in an adsorption tank, and the waste gas passes through the adsorption tank to complete filtration. After the adsorbent is saturated with adsorption, the supply of waste gas to the adsorption tank is stopped, and hot gas is introduced into the adsorption tank for desorption, so that the impurities and harmful substances adsorbed by the adsorbent are separated, thereby regenerating the adsorbent, and then waste gas is introduced for adsorption again.

[0003] However, in order to improve the adsorption effect of the adsorbent, it is necessary to naturally cool for a long time after introducing hot gas into the adsorption tank for desorption before waste gas can be introduced again, which is likely to have an adverse impact on the efficiency of waste gas treatment. Summary of the Invention

[0004] In order to improve the efficiency of waste gas treatment, this application provides an intermittent adsorption and desorption device for waste gas treatment.

[0005] This application provides an intermittent adsorption and desorption device for waste gas treatment, adopting the following technical solutions:

[0006] An intermittent adsorption and desorption device for waste gas treatment, comprising: a tank body;

[0007] Adsorbing members, multiple in number and vertically spaced apart in the tank body;

[0008] A waste gas inlet pipe, connected to one end of the tank body;

[0009] A waste gas outlet pipe, connected to the other end of the tank body;

[0010] A hot gas inlet pipe, connected to one end of the tank body;

[0011] A hot gas outlet pipe, connected to the other end of the tank body; and

[0012] A cooling pipe, coiled around the outer wall of the tank body and passing through circulating cooling water;

[0013] Wherein, the waste gas inlet pipe and the waste gas outlet pipe are opened and closed simultaneously, the hot gas inlet pipe and the hot gas outlet pipe are opened and closed simultaneously, and only one of the waste gas inlet pipe and the hot gas inlet pipe is opened within the same time period.

[0014] By adopting the above technical solutions, multiple vertically distributed adsorbing members can improve the efficiency and capacity of waste gas treatment, and by coiling the cooling pipe around the outer wall of the tank body, heat exchange with the tank body can be achieved, thereby accelerating the cooling rate of the tank body after desorption operation and improving the efficiency of waste gas treatment.

[0015] Optionally, the intermittent adsorption and desorption device further includes a cold air inlet pipe and a cold air outlet pipe that are simultaneously opened and closed. The cold air inlet pipe and the cold air outlet pipe are respectively connected to opposite ends of the tank body. The cold air inlet pipe is opened after the hot air inlet pipe is closed and before the waste gas inlet pipe is opened.

[0016] By adopting the above technical solution, the simultaneously opened and closed cold air inlet pipe and cold air outlet pipe introduce cold air after the hot air inlet pipe is closed and before the waste gas inlet pipe is opened, further accelerating the cooling process of the tank body and the adsorbent, improving the regeneration efficiency of the adsorbent and the continuity of waste gas treatment.

[0017] Optionally, the intermittent adsorption and desorption device further includes a gas guiding disc, a rotating shaft, and a power component; there are two gas guiding discs. Both gas guiding discs are rotatably connected to the tank body, and all the adsorbents are located between the two gas guiding discs; each gas guiding disc has a communication cavity penetrating through opposite sides of the gas guiding disc.

[0018] The rotating shaft is coaxially connected to both gas guiding discs at the same time, and the rotating shaft penetrates through all the adsorbents at the same time; the power component is installed on the tank body and is used to drive the rotating shaft to rotate, so as to drive the gas guiding disc to rotate in the tank body.

[0019] By adopting the above technical solution, the power component drives the rotating shaft and the gas guiding disc to rotate in the tank body, so that the communication cavity can be opposite to different positions of the adsorbent, thereby guiding the airflow passing through the adsorbent to different positions of the adsorbent, improving the uniformity of the airflow passing through the adsorbent, and improving the airflow passing effect.

[0020] Optionally, a connecting sleeve is coaxially sleeved on the outer wall of the rotating shaft. The connecting sleeve penetrates through all the adsorbents at the same time. The connecting sleeve abuts between the two gas guiding discs at the same time, and the lowermost adsorbent among all the adsorbents is threadedly sleeved on the connecting sleeve.

[0021] The rotating shaft is provided with a limiting member. A telescopic member cooperating with the power component is connected to the tank body. The telescopic member can drive the power component to move up and down to drive the rotating shaft to switch between a first position and a second position; the first position is characterized in that the rotating shaft and the connecting sleeve are connected by the limiting member and can rotate synchronously, and the second position is characterized in that the limiting member is separated from the connecting sleeve.

[0022] The adsorption component includes an activated carbon plate and a heat insulation ring. The heat insulation ring is sleeved on the outer wall of the activated carbon plate, and the heat insulation ring abuts between the activated carbon plate and the inner wall of the tank. When the rotating shaft is in the first position, the rotation of the rotating shaft can drive the adsorption component to switch between a heat preservation position and a heat dissipation position; the heat preservation position is characterized in that the heat insulation rings of all the adsorption components abut against each other in sequence along the vertical direction, and the heat dissipation position is characterized in that the heat insulation rings of all the adsorption components are separated from each other.

[0023] By adopting the above technical solution, when in the heat preservation position, the heat insulation rings of all the adsorption components abut against each other, improving the heat efficiency; when in the heat dissipation position, the heat insulation rings of all the adsorption components are separated, accelerating the cooling speed.

[0024] Optionally, the limiting component includes a spline. The spline is coaxially sleeved on the outer wall of the rotating shaft. Key grooves for the spline to be inserted are formed on the upper guide air disc and the connecting sleeve. When the rotating shaft switches between the first position and the second position, the spline is always inserted into the corresponding guide air disc.

[0025] By adopting the above technical solution, the cooperation of the spline and the key groove enables the rotating shaft to be stably connected to or separated from the connecting sleeve when switching between the first position and the second position, and at the same time maintain the connection with the upper guide air disc, improving the stability and reliability of the device.

[0026] Optionally, the lower guide air disc has a through hole for the rotating shaft to pass through. A rotation stopping portion is arranged on the inner wall of the through hole of the guide air disc, and a rotation stopping groove for the rotation stopping portion to abut against and slide is formed in the rotating shaft along the vertical direction.

[0027] By adopting the above technical solution, through the cooperation of the rotation stopping portion and the rotation stopping groove, the relative rotation between the lower guide air disc and the rotating shaft is restricted, so that the lower guide air disc can be driven to rotate together when the rotating shaft rotates.

[0028] Optionally, a guiding portion for abutting against the inner wall of the tank is arranged on the outer wall of the heat insulation ring. A guiding groove for the guiding portion to slide along the vertical direction is arranged on the inner wall of the tank. The guiding portions and the guiding grooves are in one-to-one correspondence, and the guiding grooves corresponding to different heat insulation rings are staggered; when the adsorption component is in the heat dissipation position, all the adsorption components abut against the inner bottom wall of the corresponding guiding groove.

[0029] By adopting the above technical solution, the cooperation of the guiding portion and the guiding groove can restrict the relative rotation between the adsorption component and the tank body, and limit the position of the adsorption component when in the heat dissipation position.

[0030] Optionally, a heat-insulating cloth is connected to the lowermost adsorbent member, and the other end of the heat-insulating cloth is connected to the inner wall of the tank body and is close to the air guide plate at the bottom end; when the adsorbent member is in the heat-insulating position, the heat-insulating cloth is driven to unfold; when the adsorbent member is in the heat-dissipating position, the heat-insulating cloth is driven to be folded and stored.

[0031] By adopting the above technical solution, the heat-insulating cloth can fill the space between the lowermost adsorbent member and the air guide plate when the adsorbent member is in the heat-insulating position, further insulating the air flow in the tank body.

[0032] Optionally, both the waste gas inlet pipe and the hot gas inlet pipe are located at the upper end of the tank body.

[0033] In summary, the present application includes at least one of the following beneficial effects:

[0034] 1. By arranging the cooling pipe to be wound around the outer wall of the tank body and circulating cooling water, the natural cooling time after the desorption of the adsorbent member is shortened, enabling the adsorbent member to be regenerated faster and reused in the waste gas treatment process, thereby improving the waste gas treatment efficiency;

[0035] 2. By adopting a plurality of adsorbent members vertically spaced apart and through the cooperation of the air guide plate, the rotating shaft and the power member, the waste gas can pass through the adsorbent members more evenly, improving the adsorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural view of the rotating shaft in the first position in the embodiment of the present application;

[0037] Figure 2 is Figure 1 the sectional view taken along line A-A after hiding the cooling pipe in

[0038] Figure 3 is a schematic structural view of the adsorbent member in the heat-dissipating position in the embodiment of the present application;

[0039] Figure 4 is Figure 2 the enlarged structural view at B in

[0040] Figure 5 is Figure 2 the enlarged structural view at C in

[0041] Figure 6 is a schematic structural view of the adsorbent member in the heat-dissipating position from another angle in the embodiment of the present application;

[0042] Figure 7 is a schematic structural view of the adsorbent member in the heat-insulating position in the embodiment of the present application.

[0043] Description of the reference numerals: 1, tank body; 2, adsorbent; 201, activated carbon plate; 202, heat insulation ring; 3, waste gas inlet pipe; 4, waste gas outlet pipe; 5, hot gas inlet pipe; 6, hot gas outlet pipe; 7, cooling pipe; 8, cold air inlet pipe; 9, cold air outlet pipe; 10, air guide disc; 11, rotating shaft; 12, power component; 13, communication cavity; 14, connecting sleeve; 15, limiting component; 16, telescopic component; 17, spline; 18, keyway; 19, perforation; 20, anti-rotation part; 21, anti-rotation groove; 22, guiding part; 23, guiding groove; 24, heat preservation cloth; 25, heat preservation ring; 26, tank cover. Detailed implementation mode

[0044] The following further elaborates on this application in conjunction with the attached drawings Figures 1 to 7 and provides a more detailed description of the present application.

[0045] An intermittent adsorption and desorption device for waste gas treatment is disclosed in an embodiment of the present application. Referring to Figure 1 , the intermittent adsorption and desorption device for waste gas treatment includes a tank body 1, an adsorbent 2, a waste gas inlet pipe 3, a waste gas outlet pipe 4, a hot gas inlet pipe 5, a hot gas outlet pipe 6, and a cooling pipe 7.

[0046] Referring to Figure 1 and Figure 2 , the tank body 1 is in the shape of a cylinder with its axis extending vertically, and the outer peripheral wall of the tank body 1 is made of a hard heat-conducting material, which is a metal material in this embodiment. The top of the tank body 1 is a tank cover 26. There are multiple adsorbents 2 distributed vertically in sequence in the inner cavity of the tank body 1. Each adsorbent 2 isolates the cavities on its upper and lower sides and is only connected through the adsorbent 2. The adsorbent 2 is used to adsorb harmful substance molecules in the waste gas.

[0047] The waste gas inlet pipe 3 and the hot gas inlet pipe 5 are both installed on the tank cover 26 and are both connected to the inner cavity of the tank body 1. The waste gas outlet pipe 4 and the hot gas outlet pipe 6 are both installed at the bottom of the tank body 1 and are both connected to the inner cavity of the tank body 1. The waste gas inlet pipe 3, the waste gas outlet pipe 4, the hot gas inlet pipe 5, and the hot gas outlet pipe 6 are all provided with opening and closing valves (not shown in the figure), and the waste gas outlet pipe 4 and the hot gas outlet pipe 6 are both provided with fans for sucking air (not shown in the figure). The waste gas inlet pipe 3 and the waste gas outlet pipe 4 are opened and closed synchronously, and the hot gas inlet pipe 5 and the hot gas outlet pipe 6 are also opened and closed synchronously. And only one of the waste gas inlet pipe 3 and the hot gas inlet pipe 5 can be in the open state at the same time period.

[0048] The cooling pipe 7 is wound around the outer peripheral wall of the tank body 1 in a threaded manner. The cooling pipe 7 is externally connected to a cooling water pool (not shown in the figure) to make cooling water circulate internally in the cooling water pipe.

[0049] When the adsorption and desorption device is in use, first open the waste gas inlet pipe 3 and the waste gas outlet pipe 4. The waste gas enters the tank body 1 from the waste gas inlet pipe 3 and is adsorbed and filtered by a plurality of adsorption accessories 2 in sequence, and then discharged from the waste gas outlet pipe 4. When the adsorption capacity of the adsorption accessory 2 is close to saturation, close the waste gas inlet pipe 3 and the waste gas outlet pipe 4, and open the hot gas inlet pipe 5 and the hot gas outlet pipe 6. The high-temperature steam enters the tank body 1 from the hot gas inlet pipe 5 and passes through the adsorption accessory 2 in sequence, so that the harmful substance molecules adsorbed by the adsorption accessory 2 are desorbed with the steam and discharged from the hot gas outlet pipe 6 for further treatment. When high-temperature steam is passed through the tank body 1, the water flow in the cold water pipe stops. When high-temperature steam stops flowing through the tank body 1, the water flow in the cooling pipe 7 continues to flow to quickly cool the tank body 1 and the adsorption accessory 2, so that the adsorption accessory 2 returns to the state capable of adsorbing harmful substance molecules. When the tank body 1 is cooled and waste gas is passed through, the water flow in the cold water pipe continues to flow to cool the waste gas in the tank body 1.

[0050] Refer to Figure 1 , further, the intermittent adsorption and desorption device further includes a cold air inlet pipe 8 and a cold air outlet pipe 9. The cold air inlet pipe 8 is installed on the tank cover 26 and communicates with the inner cavity of the tank body 1. The cold air outlet pipe 9 is installed on the bottom wall of the tank body 1 and communicates with the inner cavity of the tank body 1. The cold air inlet pipe 8 passes cold air. Both the cold air inlet pipe 8 and the cold air outlet pipe 9 are provided with opening and closing valves (not shown in the figure), and the cold air outlet pipe 9 is provided with a blower for sucking air (not shown in the figure). When it is necessary to cool the tank body 1, in addition to cooling through the cooling pipe 7, the cold air inlet pipe 8 and the cold air outlet pipe 9 are simultaneously opened, so that the cold air enters the tank body 1 through the cold air inlet pipe 8 and passes through the adsorption accessory 2 in sequence to cool the adsorption accessory 2, and then is discharged from the cold air outlet pipe 9. And when waste gas and hot gas are passed through the tank body 1, both the cold air inlet pipe 8 and the cold air outlet pipe 9 are in a closed state.

[0051] Refer to Figure 2 and Figure 3 , further, in order to improve the uniformity of the gas passing through each part of the adsorption accessory 2 when the gas is passed through the tank body 1, the intermittent adsorption and desorption device further includes a gas guiding disc 10, a rotating shaft 11 and a power component 12. Specifically, there are two gas guiding discs 10. Both gas guiding discs 10 are in a disc shape. Both gas guiding discs 10 are coaxially rotatably connected in the tank body 1, and the two gas guiding discs 10 are respectively close to the upper and lower ends of the tank body 1. All the adsorption accessories 2 are located between the two gas guiding discs 10. Each gas guiding disc 10 is provided with a fan-shaped communication cavity 13. The communication cavity 13 penetrates through the upper and lower surfaces of the gas guiding disc 10. The gas needs to pass through the gas guiding disc 10 through the communication cavity 13, and the communication cavities 13 of the two gas guiding discs 10 coincide vertically.

[0052] Refer to Figure 2 and Figure 4, the rotating shaft 11 coaxially penetrates through the tank body 1, two air guide discs 10, and all the suction accessories 2 at the same time. Moreover, the upper end of the rotating shaft 11 slides upwardly through the tank cover 26, and the lower end of the rotating shaft 11 slides downwardly through the bottom of the tank body 1. One end of the rotating shaft 11 close to the tank cover 26 is coaxially sleeved and fixed with a spline 17. A key groove 18 for the spline 17 to penetrate through is formed on the upper air guide disc 10 among the two air guide discs 10. The rotating shaft 11 is matched with the upper air guide disc 10 by inserting the spline 17 into the key groove 18.

[0053] Refer to Figure 2 and Figure 5 , a through hole 19 for the rotating shaft 11 to slide through is formed on the lower air guide disc 10 among the two air guide discs 10. Moreover, a rotation stopping portion 20 protruding inwardly is provided on the inner wall of the through hole 19 of the air guide disc 10. A rotation stopping groove 21 for the rotation stopping portion 20 to abut against is formed on the rotating shaft 11. The rotation stopping groove 21 extends vertically. The rotating shaft 11 is matched with the lower air guide disc 10 through the cooperation of the rotation stopping portion 20 and the rotation stopping groove 21.

[0054] Refer to Figure 2 and Figure 3 , the power member 12 is a rotating motor. The power member 12 is installed on the tank cover 26 and is coaxially connected to the rotating shaft 11. Moreover, the connection between the power member 12 and the rotating shaft 11 can be directly fixed or can be detachably connected through the cooperation of flange bolts. The power member 12 can drive the rotating shaft 11 to rotate. When the rotating shaft 11 rotates, it simultaneously drives the two air guide discs 10 to rotate self - rotatably, so that the communication cavities 13 on the air guide discs 10 move circumferentially along the rotating shaft 11. When waste gas, steam, and cold air are introduced into the tank body 1, the air guide discs 10 are all driven by the power member 12 to rotate uniformly. The air guide discs 10 direct the gas to opposite different positions of the suction accessories 2 through the communication cavities 13, thereby evenly distributing the range of the gas passing through the suction accessories 2 and improving the utilization rate of the suction accessories 2.

[0055] Refer to Figure 2 , further, in order to improve the heat preservation performance when hot steam is introduced into the tank body 1, the inner wall of the tank body 1 has heat preservation rings 25 in the part between the upper air guide disc 10 and the inner top wall of the tank body 1, and in the part between the lower air guide disc 10 and the inner bottom wall of the tank body 1. The heat preservation rings 25 are circular and are coaxially placed in the tank body 1 and abut against the inner wall of the tank body 1. Moreover, the heat preservation rings 25 are made of heat - preservation materials.

[0056] Refer to Figure 2 and Figure 3, the adsorbing member 2 includes an activated carbon plate 201 and a heat insulation ring 202. The activated carbon plate 201 is disc-shaped, and the heat insulation ring 202 is annular. The heat insulation ring 202 is fixedly sleeved coaxially on the outer wall of the activated carbon plate 201. The heat insulation ring 202 is made of a hard and heat-insulating material, and the thickness of the heat insulation ring 202 is greater than that of the activated carbon plate 201. Both the upper and lower sides of the heat insulation ring 202 along its own axis respectively protrude beyond the upper and lower sides of the activated carbon plate 201. The outer diameter of the heat insulation ring 202 is the same as the inner diameter of the tank body 1.

[0057] Refer to Figure 2 , Figure 3 and Figure 6 , when the adsorbing member 2 is located in the tank body 1, the activated carbon plate 201 is coaxial with the tank body 1, and the outer periphery of the heat insulation ring 202 abuts against the inner wall of the tank body 1. Among them, a block-shaped guiding portion 22 is provided on the outer wall of the heat insulation ring 202, and a guiding groove 23 for the guiding portion 22 to slide is opened on the inner wall of the tank body 1 to limit the relative rotation between the adsorbing member 2 and the tank body 1. The guiding portion 22 and the guiding groove 23 correspond one by one, and the positions of the guiding portions 22 on different heat insulation rings 202 in the vertical direction are different, so the guiding grooves 23 corresponding to different heat insulation rings 202 are misaligned.

[0058] It should be noted that the extending length positions of the respective guiding grooves 23 corresponding to different heat insulation rings 202 are also different. Specifically, the adsorbing member 2 has a heat preservation position and a heat dissipation position corresponding to itself.

[0059] Refer to Figure 7 , when the adsorbing member 2 is in the heat preservation position, each heat insulation ring 202 moves upward until the heat insulation rings 202 abut against each other in sequence in the vertical direction, and the topmost heat insulation ring 202 abuts against the air guiding disc 10 located above.

[0060] Refer to Figure 2 and Figure 3 , when the adsorbing member 2 is in the heat dissipation position, each heat insulation ring 202 moves downward until the heat insulation rings 202 are separated from each other, and the circumferential wall of the tank body 1 is exposed between adjacent heat insulation rings 202, and the guiding portion 22 on the heat insulation ring 202 abuts against the inner bottom wall of the corresponding guiding groove 23. At this time, the heat insulation rings 202 are evenly spaced in the vertical direction of the tank body 1.

[0061] Refer to Figure 3 and Figure 4 , in order to drive the adsorbing member 2 to switch between the heat preservation position and the heat dissipation position, a connecting sleeve 14 is coaxially sleeved on the outer wall of the rotating shaft 11. The upper and lower ends of the connecting sleeve 14 respectively abut against the opposite surfaces of the two air guiding discs 10. The connecting sleeve 14 penetrates through the activated carbon plates 201 of all the adsorbing members 2 at the same time, and the activated carbon plate 201 of the adsorbing member 2 at the lowermost end among all the adsorbing members 2 is threadedly sleeved on the outer wall of the connecting sleeve 14, and the activated carbon plates 201 of the remaining adsorbing members 2 are slidably sleeved on the outer wall of the connecting sleeve 14.

[0062] The rotating shaft 11 is provided with a limiting member 15 for mating connection with the connecting sleeve 14. In this embodiment, the limiting member 15 is the spline 17 on the connecting sleeve 14 that cooperates with the air guide disc 10, and a keyway 18 for inserting the spline 17 is also provided at the top end of the connecting sleeve 14.

[0063] Refer to Figure 2 , a telescopic member 16 for driving the driving power member 12 to move up and down is connected to the can lid 26. The telescopic member 16 can be an electric telescopic rod or a cylinder. The seat body of the telescopic member 16 is positioned relative to the can lid 26. The telescopic end of the telescopic member 16 faces downward and is connected to the power member 12 and telescopically moves in the vertical direction. When the telescopic member 16 drives the power member 12 to move, it can drive the rotating shaft 11 to switch between its corresponding first position and second position.

[0064] Refer to Figure 2 , Figure 4 and Figure 5 , specifically, when the telescopic end of the telescopic member 16 extends downward, it drives the rotating shaft 11 to move to the first position. At this time, the spline 17 of the rotating shaft 11 is simultaneously inserted into the air guide disc 10 and the connecting sleeve 14 located above to limit the relative rotation between the rotating shaft 11 and the connecting sleeve 14. At this time, when the power member 12 drives the rotating shaft 11 to rotate in the forward direction, it can drive the connecting sleeve 14 to rotate together, and can drive the lowermost adsorption member 2 to move upward and support and push the remaining adsorption members 2 to move upward to the heat preservation position. When the rotating shaft 11 is in the first position and the power member 12 rotates the rotating shaft 11 in the reverse direction, it can drive the connecting sleeve 14 to rotate together, and can drive the lowermost adsorption member 2 to move downward, and the remaining adsorption members 2 also move downward due to their own gravity, so that the adsorption members 2 move to the heat dissipation position.

[0065] When the telescopic end of the telescopic member 16 retracts upward, it drives the rotating shaft 11 to move to the second position. At this time, the spline 17 of the rotating shaft 11 moves upward away from the connecting sleeve 14 but is still inserted into the air guide disc 10. At this time, the power member 12 continues to drive the rotating shaft 11 to rotate, and the connecting sleeve 14 does not rotate with the rotating shaft 11. It should be noted that when the rotating shaft 11 switches between the first position and the second position, the rotation stopping portion 20 is always located in the rotation stopping groove 21. Therefore, when the rotating shaft 11 rotates, it always drives the two air guide discs 10 to rotate together.

[0066] Refer to Figure 2 , when exhausting waste gas in the tank body 1, the rotating shaft 11 is in the second position and the adsorption member 2 is in the heat dissipation position. When the waste gas passes through the tank body 1, the cooling pipe 7 cools the tank body 1. The tank body 1 exchanges heat with the waste gas through the tank wall between two adjacent heat insulation rings 202 to cool the waste gas, and the rotating shaft 11 continues to rotate.

[0067] After stopping the exhaust gas from flowing into the tank body 1 and before starting to introduce steam, the rotating shaft 11 first moves to the first position, then rotates to drive the adsorption member 2 to move to the heat preservation position. After that, the rotating shaft 11 returns to the second position to keep the adsorption member 2 in the heat preservation position and the rotating shaft 11 continues to rotate. Subsequently, steam is introduced into the tank body 1 to desorb the adsorption member 2. When the steam passes through the adsorption member 2 in sequence, since the heat preservation ring 25 and the heat insulation ring 202 isolate the steam from the inner wall of the tank body 1, and the adsorption members 2 are close to each other, the heat loss in the steam can be reduced, and the desorption effect of the steam on the adsorption member 2 can be improved.

[0068] After the desorption operation is completed and the steam stops flowing into the tank body 1, cold air is introduced into the tank body 1 to cool the tank body 1 and the adsorption member 2. At the same time, the rotating shaft 11 moves to the first position, then rotates in the reverse direction to drive the adsorption member 2 to move to the heat dissipation position. After that, the rotating shaft 11 returns to the second position and continues to rotate. At this time, the adsorption members 2 are separated from each other, the distance between two adjacent adsorption members 2 increases, and the cooling pipe 7 further cools the tank body 1 through the tank wall between the two heat insulation rings 202, improving the cooling efficiency of the tank body 1. After the tank body 1 and the adsorption member 2 are cooled, the tank body 1 stops introducing cold air and starts to introduce exhaust gas.

[0069] Refer to Figure 2 and Figure 7 Furthermore, a heat preservation cloth 24 is connected to the heat insulation ring 202 of the adsorption member 2 at the bottommost end. The heat preservation cloth 24 is made of flexible heat preservation cloth material, and the heat preservation cloth 24 is in a cylindrical shape. The top end of the heat preservation cloth 24 is connected to the heat insulation ring 202, and the bottom end of the heat preservation cloth 24 is connected to the inner wall of the tank body 1 and is close to the air guide disc 10 below. When the adsorption member 2 is in the heat dissipation position, the heat preservation cloth 24 is folded and stored between the bottommost adsorption member 2 and the air guide disc 10, and the gas passes through the inner cavity of the heat preservation cloth 24. When the adsorption member 2 is in the heat preservation position, the heat preservation cloth 24 is lifted and unfolded by the adsorption member 2 to isolate the inner wall of the tank body 1 between the bottommost adsorption member 2 and the air guide disc 10 from the gas, further improving the heat preservation effect on the gas.

[0070] The implementation principle of the intermittent adsorption and desorption device for waste gas treatment in the embodiment of the present application is as follows: When exhaust gas and cold air are introduced into the tank body 1, the adsorption member 2 is in the heat dissipation position, and the cooling pipe 7 can conduct cold to the tank body 1 through the tank wall between two adjacent heat insulation rings 202 to cool the tank body 1 and the adsorption member 2. When steam is introduced into the tank body 1, the adsorption member 2 is in the heat preservation position, thereby isolating the steam from the circumferential wall of the tank body 1 that can conduct heat and reducing the heat loss of the steam. And when exhaust gas, cold air and steam are introduced into the tank body 1, the power member 12 continuously drives the air guide disc 10 to rotate.

[0071] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An intermittent adsorption and desorption device for waste gas treatment, characterized in that, Comprising: A tank body (1); Adsorption accessories (2), multiple in number and vertically spaced in the tank body (1); An exhaust gas inlet pipe (3), connected to one end of the tank body (1); An exhaust gas outlet pipe (4), connected to the other end of the tank body (1); A hot gas inlet pipe (5), connected to one end of the tank body (1); A hot gas outlet pipe (6), connected to the other end of the tank body (1); and A cooling pipe (7), coiled around the outer wall of the tank body (1) and passing through circulating cooling water; Wherein, the exhaust gas inlet pipe (3) and the exhaust gas outlet pipe (4) are opened and closed simultaneously, the hot gas inlet pipe (5) and the hot gas outlet pipe (6) are opened and closed simultaneously, and only one of the exhaust gas inlet pipe (3) and the hot gas inlet pipe (5) is opened within the same time period; The intermittent adsorption and desorption device further includes a gas guide disc (10), a rotating shaft (11) and a power component (12); there are two gas guide discs (10), both of the two gas guide discs (10) are rotatably connected in the tank body (1), and all the adsorption accessories (2) are located between the two gas guide discs (10); each gas guide disc (10) is provided with a communication cavity (13) penetrating through the opposite two sides of the gas guide disc (10); The rotating shaft (11) is coaxially connected to the two gas guide discs (10) at the same time, and the rotating shaft (11) passes through all the adsorption accessories (2) at the same time; the power component (12) is installed on the tank body (1) and is used to drive the rotating shaft (11) to rotate, so as to drive the gas guide disc (10) to rotate in the tank body (1); A connecting sleeve (14) is coaxially sleeved on the outer wall of the rotating shaft (11), the connecting sleeve (14) passes through all the adsorption accessories (2) at the same time, the connecting sleeve (14) abuts between the two gas guide discs (10) at the same time, and the lowermost adsorption accessory (2) among all the adsorption accessories (2) is threadedly sleeved on the connecting sleeve (14); The rotating shaft (11) is provided with a limiting member (15), the tank body (1) is connected with a telescopic member (16) cooperating with the power component (12), and the telescopic member (16) can drive the power component (12) to move up and down to drive the rotating shaft (11) to switch between a first position and a second position; the first position is characterized in that the rotating shaft (11) and the connecting sleeve (14) are connected by the limiting member (15) and can rotate synchronously, and the second position is characterized in that the limiting member (15) is separated from the connecting sleeve (14); The adsorbing member (2) includes an activated carbon plate (201) and a heat insulation ring (202). The heat insulation ring (202) is sleeved on the outer wall of the activated carbon plate (201), and the heat insulation ring (202) abuts between the activated carbon plate (201) and the inner wall of the tank body (1). When the rotating shaft (11) is in the first position, the rotation of the rotating shaft (11) can drive the adsorbing member (2) to switch between a heat preservation position and a heat dissipation position; the heat preservation position is characterized in that the heat insulation rings (202) of all the adsorbing members (2) abut against each other in sequence vertically, and the heat dissipation position is characterized in that the heat insulation rings (202) of all the adsorbing members (2) are separated from each other.

2. The intermittent adsorption and desorption device for waste gas treatment according to claim 1, wherein: The intermittent adsorption and desorption device further includes a cold air inlet pipe (8) and a cold air outlet pipe (9) that are opened and closed simultaneously. The cold air inlet pipe (8) and the cold air outlet pipe (9) are respectively communicated with opposite ends of the tank body (1). The cold air inlet pipe (8) is opened after the hot air inlet pipe (5) is closed and before the waste gas inlet pipe (3) is opened.

3. The intermittent adsorption and desorption device for waste gas treatment according to claim 1, characterized in that: The limiting member (15) includes a spline (17). The spline (17) is coaxially sleeved on the outer wall of the rotating shaft (11). Key grooves (18) for inserting the spline (17) are formed on the upper guide air disc (10) and the connecting sleeve (14). When the rotating shaft (11) switches between the first position and the second position, the spline (17) is always inserted into the corresponding guide air disc (10).

4. An intermittent adsorption and desorption device for waste gas treatment according to claim 3, characterized in that: The lower guide air disc (10) has a through hole (19) for the rotating shaft (11) to pass through. The guide air disc (10) is provided with an anti-rotation portion (20) on the inner wall of the through hole (19). The rotating shaft (11) is provided with an anti-rotation groove (21) for the anti-rotation portion (20) to abut against and slide along vertically.

5. The intermittent adsorption and desorption device for waste gas treatment according to claim 1, characterized in that: The outer wall of the heat insulation ring (202) has a guiding portion (22) that abuts against the inner wall of the tank body (1). The inner wall of the tank body (1) has a guiding groove (23) for the guiding portion (22) to slide vertically. The guiding portion (22) and the guiding groove (23) are in one-to-one correspondence, and the guiding grooves (23) corresponding to different heat insulation rings (202) are offset; when the adsorbing member (2) is in the heat dissipation position, all the adsorbing members (2) abut against the inner bottom wall of the corresponding guiding groove (23).

6. The intermittent adsorption and desorption device for waste gas treatment according to claim 1, wherein: A heat preservation cloth (24) is connected to the lowermost adsorbing member (2). The other end of the heat preservation cloth (24) is connected to the inner wall of the tank body (1) and is close to the lower guide air disc (10); when the adsorbing member (2) is in the heat preservation position, the heat preservation cloth (24) is driven to unfold; when the adsorbing member (2) is in the heat dissipation position, the heat preservation cloth (24) is driven to be folded and stored.

7. An intermittent adsorption and desorption device for waste gas treatment according to claim 1, characterized in that: Both the waste gas inlet pipe (3) and the hot air inlet pipe (5) are located at the upper end of the tank body (1).

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