An adsorption system with adsorbent transfer function

Abstract

The utility model relates to flue gas adsorption purification technical field and disclose a kind of adsorption system with adsorbent transfer function, including adsorber, transfer device and regenerating device, the top and bottom of adsorber are equipped with addition mouth and discharge port respectively, the inside of regenerating device is provided with heating device for carrying out desorption regeneration to saturated adsorbent, the top of regenerating device is equipped with receiving port, the bottom of regenerating device is equipped with discharge port;Adsorber and regenerating device are formed closed loop circuit by transfer device, so that adsorbent is continuously circulated between adsorber and regenerating device, continuously updates adsorption bed, avoids local saturation, stabilizes outlet purification concentration;And by transfer device replace traditional valve switching, solve the problem of valve complex in prior art, adsorbent utilization rate is low, reduce the number of valve, reduce cost and leakage risk.

Description

Technical Field

[0001] This utility model relates to the field of flue gas adsorption and purification technology, specifically to an adsorption system with adsorbent transfer function. Background Technology

[0002] Adsorption-desorption is a common purification method for removing pollutants from halogen-containing flue gas. It can also be used to purify pollutants in halogen-free flue gas. In the adsorption purification process, flue gas enters the adsorption tower through the flue gas inlet, passes through the adsorption bed in the adsorption tower, and the adsorbent in the adsorption bed adsorbs the pollutants in the flue gas. After passing through the adsorption bed, the flue gas is purified and discharged from the flue gas outlet.

[0003] Traditional adsorption-desorption devices often employ a multi-stage series tank configuration. For example, a "2-adsorption, 1-desorption" system requires three adsorption tanks to alternate between adsorption and desorption, with numerous zero-leakage valves switching the airflow path between the tanks. However, this type of structure has the following drawbacks:

[0004] (1) The number of valves is large, the pipeline is complex, and the cost is high;

[0005] (2) The adsorption tank needs to switch functions frequently, which is cumbersome to operate and can easily lead to system failure due to valve leakage;

[0006] (3) Once the adsorbent is partially saturated, it needs to be replaced or regenerated as a whole, which wastes the adsorbent and the purification efficiency is unstable.

[0007] Therefore, there is an urgent need for an adsorbent recycling system that is structurally simple and operates stably. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adsorption system with adsorbent transfer function. By replacing the traditional valve switching with a mechanical transfer device, the adsorbent is directionally circulated between the adsorber and the regeneration device, solving the problems of complex valves and low adsorbent utilization in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] An adsorption system with adsorbent transfer function includes an adsorber, a transfer device and a regeneration device. The top and bottom of the adsorber are respectively provided with an addition port and an outlet port, and the interior of the adsorber is provided with an adsorption bed for purifying flue gas.

[0011] The regeneration device is equipped with a heating device for desorbing and regenerating the saturated adsorbent. The top of the regeneration device is provided with a receiving port for receiving the saturated adsorbent, and the bottom of the regeneration device is provided with a discharge port for discharging the regenerated adsorbent.

[0012] The transfer device includes two independent conveying modules. The inlet of the first conveying module is connected to the outlet, and the outlet of the first conveying module is connected to the receiving port. The inlet of the second conveying module is connected to the outlet, and the outlet of the second conveying module is connected to the adding port.

[0013] Optionally, the conveying module includes a sealed conveying channel, a transmission structure disposed within the conveying channel, and a power device for driving the transmission structure, wherein the inlet and the outlet are disposed on the conveying channel.

[0014] Optionally, the adsorption bed is a fixed bed, and the adsorbent can be discharged from the discharge port and filled from the addition port during operation.

[0015] Optionally, the conveying channel of the second conveying module is equipped with a water spraying device for cooling the regenerated adsorbent.

[0016] Optionally, the heating device employs a steam heating assembly, which includes a steam inlet and a steam outlet. The steam inlet is connected to an external steam source, and the steam outlet is connected to a condensation recovery device.

[0017] Optionally, both the adding port and the discharging port are equipped with flow sensors for monitoring the unloading or filling amount.

[0018] Optionally, the conveying channels of the first conveying module and the second conveying module are respectively equipped with a feed control valve and a discharge control valve.

[0019] Optionally, the adsorber and the regeneration device form a closed loop through the transfer device, so that the adsorbent continuously circulates between the adsorber and the regeneration device.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] (1) In this utility model, the adsorber and the regeneration device form a closed loop through two sets of conveying modules of the transfer device, so that the adsorbent continuously circulates between the adsorber and the regeneration device, continuously renews the adsorption bed, avoids local saturation, and stabilizes the outlet purification concentration; and by replacing the traditional valve switching with the transfer device, the problems of complex valves and low adsorbent utilization in the prior art are solved, the number of valves is reduced, and the cost and leakage risk are reduced.

[0022] (2) In this utility model, the regenerated adsorbent is cooled by spraying water to prevent high temperature from affecting the adsorption efficiency or causing safety hazards, which greatly improves safety. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the structure of the adsorption system with adsorbent transfer function in the embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure in this utility model embodiment where the adsorber and the regeneration device are connected through the first conveying module;

[0025] Figure 3 This is a schematic diagram of the structure in this utility model embodiment where the adsorber and the regeneration device are connected through a second conveying module;

[0026] Figure 4 This is a schematic diagram of the conveying module in an embodiment of this utility model;

[0027] Among them, 1. Adsorber; 101. Adding port; 102. Discharge port; 2. Regeneration device; 201. Receiving port; 202. Discharge port; 3. First conveying module; 4. Second conveying module; 5. Conveying channel; 6. Power unit; 7. Transfer device. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0029] like Figures 1-4 As shown, an adsorption system with adsorbent transfer function includes an adsorbent 1, a transfer device 7, and a regeneration device 2. The adsorbent 1 and the regeneration device 2 form a closed loop through the transfer device 7, so that the adsorbent continuously circulates between the adsorbent 1 and the regeneration device 2, continuously renewing the adsorption bed of the adsorbent 1, avoiding local saturation, stabilizing the outlet purification concentration, improving the adsorbent utilization rate, reducing the number of valves, and lowering costs and leakage risks.

[0030] The adsorber 1 has an adsorption bed inside, which is used to purify flue gas. The adsorbent in the adsorber 1 is filled in the form of a fixed bed. The organic waste gas enters from below the bed to contact the adsorbent and is discharged from above the bed. The organic molecules are captured by the adsorbent.

[0031] As described above, the top of the adsorber 1 is provided with an inlet 101 and the bottom of the adsorber 1 is provided with an outlet 102. The regenerated adsorbent can be refilled into the adsorber 1 through the inlet 101 and the adsorbent that is close to saturation can be discharged through the outlet 102.

[0032] Both the inlet 101 and the outlet 102 are equipped with flow sensors. The adsorbent can be discharged from the outlet 102 and loaded from the inlet 101 during the operation of the adsorber 1. The flow sensors are used to monitor the amount of adsorbent discharged or loaded.

[0033] The regeneration device 2 uses a desorber, which is equipped with a heating device inside. The heating device is used to heat and desorb the saturated adsorbent for regeneration. The top of the regeneration device 2 is provided with a receiving port 201, and the bottom of the regeneration device 2 is provided with a discharge port 202.

[0034] When the adsorbent below the bed is close to saturation, it is discharged into the transfer device 7 through the outlet 102. After being transported by the transfer device 7, the regeneration device 2 receives the saturated adsorbent through the receiving port 201. After the saturated adsorbent is heated and desorbed by the heating device, it is discharged from the outlet 202.

[0035] The regeneration device 2 releases the adsorbent, leaving the interior empty. The outlet 202 is closed, and the receiving port 201 is opened. The first transport module 3 from the adsorber 1 to the regeneration device 2 moves the adsorbent to be desorbed into the regeneration device 2. The receiving port 201 is closed, and the regeneration process begins. After the regeneration process is completed, the adsorbent waits to be released into the channel of the second transport module 4 from the regeneration device 2 to the adsorber 1.

[0036] The heating device uses a steam heating assembly, which includes a steam inlet and a steam outlet. The steam inlet is connected to an external steam source, and the steam outlet is connected to a condensation recovery device. It is used to introduce steam to heat and desorb the adsorbent, while the saturated adsorbent is located between the steam inlet and the steam outlet.

[0037] The transfer device 7 includes two independent conveying modules. Each conveying module includes a closed conveying channel 5, a transmission structure located within the conveying channel 5, and a power unit 6 that drives the transmission structure. The conveying channel 5 is provided with an inlet and an outlet, and the power unit 6 drives the transmission structure to convey the adsorbent or saturated adsorbent from the inlet to the outlet along the channel.

[0038] Specifically, the inlet of the first conveying module 3 is connected to the outlet 102, and the outlet of the first conveying module 3 is connected to the receiving port 201; the inlet of the second conveying module 4 is connected to the outlet 202, and the outlet of the second conveying module 4 is connected to the adding port 101. Furthermore, the conveying channels 5 of the first conveying module 3 and the second conveying module 4 are respectively equipped with an inlet control valve and an outlet control valve, which are used to control the inlet and outlet respectively.

[0039] The first conveying module 3 is used to transport the nearly saturated adsorbent in the adsorber 1 to the regeneration device 2 for desorption, and the second conveying module 4 is used to transport the adsorbent that has been regenerated in the regeneration device 2 back to the adsorber 1.

[0040] Furthermore, the second conveying module 4 is equipped with a water spraying device in the conveying channel 5 for cooling the regenerated adsorbent. The water spraying device includes an atomizing nozzle and a water source interface that are interconnected. The atomizing nozzle is installed in the conveying channel 5 of the second conveying module 4 and is used to cool the regenerated high-temperature adsorbent. Specifically, the cooling method is to atomize the cold water connected from the water source interface and mix it with the regenerated adsorbent for cooling.

[0041] In addition, the transmission structure of the conveying module can be any one of spiral blades, conveyor belts or chain plates, and the power unit 6 is an electric motor.

[0042] The adsorption system with adsorbent transfer function proposed in this utility model continuously circulates the adsorbent between the adsorber 1 and the regeneration device 2. Its operation process is as follows:

[0043] Adsorption process: Low-temperature flue gas enters from the bottom inlet of the adsorber 1, contacts the adsorbent from below the bed, and is discharged from above the bed. Organic molecules are captured by the adsorbent, and the flue gas is discharged after purification. When the adsorbent below the bed is close to saturation, the power unit 6 of the outlet 102 and the first conveying module 3 is turned on to move the adsorbent below into the conveying channel 5 of the first conveying module 3 through the outlet 102.

[0044] Saturated adsorbent transfer (using a spiral blade as an example of a transfer transmission structure): The rotating spiral blade pushes the adsorbent from the discharge port 102 into the conveying channel 5 of the first conveying module 3, and then into the receiving port 201 of the regeneration device 2 through the discharge port. When the adsorbent in the regeneration device 2 reaches the preset amount (monitored by a sensor), the receiving port 201 is closed, the transfer is stopped, and desorption and regeneration are started.

[0045] Desorption and regeneration process: Steam is introduced into the steam coil from the steam inlet to heat the adsorbent and desorb the organic matter. The desorbed steam enters the condenser from the steam outlet for recovery. After regeneration is completed, the steam source is turned off and the outlet 202 is opened.

[0046] Regenerated adsorbent cooling and return: The high-temperature adsorbent falls from the outlet 202 into the feed inlet of the second conveying module 4. The motor and water spray device are started, and the atomized water mixes with the adsorbent to cool it down (the temperature drops to ≤50℃). It is then conveyed through the spiral blades to the addition port 101 at the top of the adsorber 1 to replenish the bed.

[0047] Circulation control: The flow sensors at the discharge port 102 and the addition port 101 of the adsorber 1 monitor the discharge and loading rates in real time. The motor speed is adjusted through the existing control system to ensure that the adsorbent circulation rate matches the adsorption load.

[0048] Working principle:

[0049] Organic waste gas comes into contact with the adsorbent from below the bed and is discharged from above the bed, where organic molecules are captured by the adsorbent. When the adsorbent below the bed is close to saturation, it is moved through the outlet 102 into the conveying channel 5 (first conveying module 3) of the transfer device 7. The motor provides power, and the mechanical structure in the channel sends the adsorbent into the regeneration device 2, where it is discharged from above. At the same time, the adsorbent that has been regenerated in the regeneration device 2 is moved through the outlet 202 below the regeneration device 2 into the channel of the second conveying module 4, which delivers the adsorbent to the adsorber 1 and discharges it from above.

[0050] In summary, the adsorption system with adsorbent transfer function proposed in this utility model replaces the traditional valve switching with a mechanical transfer device 7, realizing the directional circulation of adsorbent between the adsorber 1 and the regeneration device 2, solving the problems of complex valves and low adsorbent utilization in the prior art; and it can reduce the amount of adsorbent used, stabilize the outlet concentration of the adsorber 1, reduce the number of valves, and reduce costs and leakage risks.

[0051] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An adsorption system with adsorbent transfer function, characterized in that: It includes an adsorber (1), a transfer device (7) and a regeneration device (2). The top and bottom of the adsorber (1) are respectively provided with an addition port (101) and an outlet port (102). The adsorber (1) is provided with an adsorption bed for purifying flue gas inside. The regeneration device (2) is equipped with a heating device for desorbing and regenerating the saturated adsorbent. The top of the regeneration device (2) is provided with a receiving port (201) for receiving the saturated adsorbent, and the bottom of the regeneration device (2) is provided with a discharge port (202) for discharging the regenerated adsorbent. The transfer device (7) includes two independent conveying modules. The inlet of the first conveying module (3) is connected to the outlet (102), and the outlet of the first conveying module (3) is connected to the receiving port (201). The inlet of the second conveying module (4) is connected to the outlet (202), and the outlet of the second conveying module (4) is connected to the adding port (101).

2. The adsorption system with adsorbent transfer function according to claim 1, characterized in that: The conveying module includes a closed conveying channel (5), a transmission structure disposed in the conveying channel (5), and a power device (6) for driving the transmission structure. The inlet and the outlet are disposed on the conveying channel (5).

3. The adsorption system with adsorbent transfer function according to claim 2, characterized in that: The adsorption bed is a fixed bed, and the adsorbent can be discharged from the outlet (102) and filled from the addition port (101) during operation.

4. The adsorption system with adsorbent transfer function according to claim 3, characterized in that: The second conveying module (4) is equipped with a water spraying device in the conveying channel (5) for cooling the regenerated adsorbent.

5. The adsorption system with adsorbent transfer function according to claim 1, characterized in that: The heating device uses a steam heating assembly, which includes a steam inlet and a steam outlet. The steam inlet is connected to an external steam source, and the steam outlet is connected to a condensation recovery device.

6. The adsorption system with adsorbent transfer function according to claim 1, characterized in that: Both the addition port (101) and the discharge port (102) are equipped with flow sensors for monitoring the discharge or filling amount.

7. The adsorption system with adsorbent transfer function according to claim 1, characterized in that: The first conveying module (3) and the second conveying module (4) are respectively provided with a feed control valve and a discharge control valve on their conveying channels (5).

8. The adsorption system with adsorbent transfer function according to any one of claims 1-7, characterized in that: The adsorber (1) and the regeneration device (2) form a closed loop through the transfer device (7), so that the adsorbent continuously circulates between the adsorber (1) and the regeneration device (2).

Images