Adsorption condensing device for recycling multi-component VOCs

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses an adsorption condensing device for recycling multi-component VOCs (Volatile Organic Compounds), which comprises a base plate, a filter box, an adsorbent tank A, an adsorbent tank B and a condenser main body, and a filter component is arranged in the filter box. According to the adsorption condensing device for recycling the multi-component VOCs, through arrangement of an adsorbent tank A, an adsorbent tank B and a timing assembly, when the adsorption condensing device is used, a nitrogen communicating pipe is connected with an external hot steam source, timing equipment sets a timing threshold value, and when the time threshold value is reached, a PLC controls a first electric ball valve at the bottom end of the adsorbent tank A to be closed; and a second electric ball valve of the adsorbent tank B is opened, meanwhile, a three-way electric ball valve pipe is opened, desorption regeneration is conducted in the adsorbent tank A, a three-way electric ball valve A on the adsorbent tank A is opened, desorbed VOCs are conveyed into a condenser body, condensation recovery is conducted, the operation is repeated, adsorption and desorption are conducted, and the adsorption and condensation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to an adsorption-condensation device for the recovery of multi-component VOCs. Background Technology

[0002] VOCs (volatile organic compounds) refer to organic compounds that have high saturated vapor pressure, low boiling point, small molecular weight under standard conditions, and are easily volatilized at room temperature. These substances are among the main air pollutants, commonly represented by VOCs, while total volatile organic compounds are represented by TVOC. VOCs do not refer to a specific pollutant, but rather to a collective term for a class of organic compounds with similar physicochemical properties. The main sources of VOCs include coal chemical industry, petrochemical industry, fuel and paint manufacturing, and solvent manufacturing and use. Most VOCs have unpleasant odors and are toxic, irritating, teratogenic, and carcinogenic. Benzene, toluene, and formaldehyde, in particular, can cause significant harm to human health, thus requiring recycling and treatment. Common VOCs treatment methods generally involve adsorption with adsorbents and condensation.

[0003] In practice, existing multi-component VOCs recovery adsorption-condensation devices may encounter other impurities in the VOCs waste gas, which may also adhere to the surface of the adsorbent. This makes it inconvenient to recover these impurities and also affects the adsorbent's absorption of VOCs from the waste gas, impacting its reusability and making it difficult to ensure its adsorption performance. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide an adsorption and condensation device for multi-component VOCs recovery, which solves the problem mentioned in the background art that affects the repeated use of the adsorbent and makes it difficult to ensure the adsorption performance of the adsorbent.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adsorption-condensation device for multi-component VOCs recovery, comprising a substrate, a filter box, adsorbent tank A, adsorbent tank B, and a condenser body. The filter box contains a filter assembly, and an inlet jacket is fixedly connected to the other end of the filter box. A heat dissipation assembly is provided on the surface of the inlet jacket. A cooling assembly and a timing assembly are fixedly installed on the surface of the substrate. A temperature sensor is fixedly connected inside the inlet jacket. A gas delivery mechanism is fixedly connected to the other side of the filter box, and a discharge mechanism is fixedly connected to the top of adsorbent tank A.

[0008] The filtration assembly includes a filter screen and a fiber layer;

[0009] The cooling components include a water tank, a water pump, and a condensation device;

[0010] The timing component includes a timing device and a PLC controller.

[0011] As a further embodiment of this utility model, the gas delivery mechanism includes a long gas delivery pipe fixedly connected to the other side of the filter box. A first electric ball valve and a second electric ball valve are fixedly connected to the upper part of the long gas delivery pipe. The top end of the first electric ball valve is fixedly connected to the middle of the bottom end of the adsorbent tank A, and the top end of the second electric ball valve is fixedly connected to the middle of the bottom end of the adsorbent tank B. The first electric ball valve and the second electric ball valve facilitate the control of which adsorbent tank the waste gas enters.

[0012] As a further embodiment of this utility model, the discharge mechanism includes a three-way electric ball valve A fixedly connected to the top of the adsorbent tank A. A recovery long pipe is fixedly connected to the top of the three-way electric ball valve A, and a three-way electric ball valve B is fixedly connected to the bottom of the recovery long pipe. The bottom of the three-way electric ball valve B is fixedly connected to the top of the adsorbent tank B. A tail gas discharge pipe is fixedly connected to one side of both the three-way electric ball valve A and the three-way electric ball valve B. The tail gas discharge pipe is convenient to connect to an external exhaust chimney.

[0013] As a further embodiment of this utility model, a fan is fixedly connected to the front end of the condenser body, and a connecting pipe is fixedly connected to one end of the fan. The connecting pipe is fixedly connected to the recovery long pipe. A refrigerant inlet and a refrigerant outlet are provided above the condenser body, and an external recovery transfer pipe is provided below. The external recovery transfer pipe facilitates connection to an external recovery device.

[0014] As a further embodiment of this utility model, a nitrogen gas connecting pipe is fixedly connected to one side of the surface of both adsorbent tank A and adsorbent tank B. A three-way electric ball valve is fixedly connected to one end of the nitrogen gas connecting pipe. The three-way electric ball valve is used to connect to an external hot steam source. Activated carbon adsorbent is installed inside adsorbent tank A and adsorbent tank B to adsorb VOCs in the waste gas, facilitating recovery.

[0015] As a further embodiment of this utility model, the filter assembly includes a filter screen disposed inside the filter box, and a fiber layer is disposed on the back of the filter screen, which facilitates the filtration of impurities.

[0016] As a further embodiment of this utility model, the cooling component includes a water tank fixedly installed on the surface of the substrate, a water pump installed at the top of the water tank, the output end of the water pump being fixedly connected to the liquid inlet on the air inlet jacket pipe, and a condensing device connected to the other side of the water tank through a through pipe A. The input end of the condensing device is connected to a circulation pipe, which facilitates circulation.

[0017] As a further embodiment of this utility model, the timing component includes a timing device fixedly mounted on the surface of the substrate. One side of the timing device is electrically connected to a PLC controller via a power line. The PLC controller facilitates the control of various devices and valves.

[0018] As a further embodiment of this utility model, the heat dissipation component includes thermally conductive silicone fixedly connected to the surface of the air intake jacket tube, and heat dissipation fins are fixedly connected to the surface of the thermally conductive silicone, which facilitates heat dissipation.

[0019] As a further embodiment of this utility model, both adsorbent tank A and adsorbent tank B are fixedly connected to a discharge electric ball valve at their bottom ends, and the bottom ends of the discharge electric ball valves are fixedly connected to an external drain pipe, which facilitates connection to an external storage device.

[0020] (III) Beneficial Effects

[0021] This invention provides an adsorption-condensation device for multi-component VOCs recovery, which has the following advantages:

[0022] 1. This multi-component VOCs recovery adsorption-condensation device, through the setup of adsorbent tank A, adsorbent tank B, and a timing component, is connected to an external hot steam source via a nitrogen connecting pipe during use. The timing device is set with a time threshold. When the time threshold is reached, the PLC controller controls the first electric ball valve at the bottom of adsorbent tank A to close, and the second electric ball valve of adsorbent tank B to open. At the same time, the three-way electric ball valve is opened to allow desorption and regeneration into adsorbent tank A. The three-way electric ball valve A on adsorbent tank A is opened to allow the desorbed VOCs to be transported into the condenser body for condensation and recovery. This process is repeated, with adsorption and desorption, increasing the efficiency of adsorption and condensation.

[0023] 2. This multi-component VOCs recovery adsorption-condensation device, through the setting of filter components, cooling components, and temperature sensors, allows the PLC controller to set a high-temperature threshold based on the boiling point of the adsorbent. The temperature sensor monitors the temperature of the exhaust gas. When the threshold is reached, the condensation equipment and water pump are activated to deliver water into the inlet jacket pipe for pre-cooling the exhaust gas. When passing through the filter box, the filter screen and fiber layer can filter out impurities in the exhaust gas. This optimized adsorption-condensation setting function avoids other impurities in the VOCs exhaust gas from adhering to the surface of the adsorbent during the adsorption process, which would affect the subsequent recovery of these impurities. On the other hand, it would also affect the adsorbent's absorption of VOCs in the exhaust gas, affecting the reusability of the adsorbent and helping to ensure the adsorption performance of the adsorbent. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the cooling component and heat dissipation component of this utility model;

[0027] Figure 4 This is a schematic diagram of the filter box and filter assembly of this utility model.

[0028] In the diagram: 1. Substrate; 2. Filter box; 3. Adsorbent tank A; 4. Adsorbent tank B; 5. Filter assembly; 501. Filter screen; 502. Fiber layer; 6. Inlet jacket pipe; 7. Heat dissipation assembly; 701. Thermally conductive silicone; 702. Heat dissipation fins; 8. Cooling assembly; 801. Water tank; 802. Water pump; 803. Condensation equipment; 9. Timing assembly; 901. Timing device; 902. PLC controller; 10. Temperature sensor; 11. Gas delivery pipe; 12. First electric ball valve; 13. Second electric ball valve; 14. Three-way electric ball valve A; 15. Recovery pipe; 16. Three-way electric ball valve B; 17. Tail gas discharge pipe; 18. Fan; 19. Connecting pipe; 20. Condenser body; 21. Nitrogen connecting pipe; 22. Three-way electric ball valve pipe; 23. Discharge electric ball valve; 24. External drain pipe. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] Please see Figures 1 to 4 This utility model provides a technical solution: an adsorption and condensation device for multi-component VOCs recovery, comprising a substrate 1, a filter box 2, an adsorbent tank A3, an adsorbent tank B4, and a condenser body 20. The filter box 2 is internally equipped with a filter assembly 5. An inlet jacket pipe 6 is fixedly connected to the other end of the filter box 2. A heat dissipation assembly 7 is provided on the surface of the inlet jacket pipe 6. A cooling assembly 8 and a timing assembly 9 are fixedly installed on the surface of the substrate 1. A temperature sensor 10 is fixedly connected inside the inlet jacket pipe 6. A gas delivery mechanism is fixedly connected to the other side of the filter box 2. A discharge mechanism is fixedly connected to the top of the adsorbent tank A3.

[0031] Filter assembly 5 includes a filter screen 501 and a fiber layer 502;

[0032] The cooling component 8 includes a water tank 801, a water pump 802, and a condensing device 803. Through the settings of the filter component 5, the cooling component 8, and the temperature sensor 10, during use, the PLC controller 902 sets a high-temperature threshold based on the boiling point of the adsorbent. The temperature sensor 10 monitors the temperature of the exhaust gas. When the threshold is reached, the condensing device 803 and the water pump 802 are activated to deliver water into the air inlet jacket pipe 6 to pre-cool the exhaust gas. When passing through the filter box 2, the filter screen 501 and the fiber layer 502 can filter the impurity particles in the exhaust gas first. This optimizes the adsorption and condensation settings, preventing other impurity particles in the VOCs exhaust gas from adhering to the surface of the adsorbent during the adsorption process. This would affect the subsequent recovery of these impurity particles and also affect the adsorbent's absorption of VOCs in the exhaust gas, impacting the reusability of the adsorbent. This helps ensure the adsorption performance of the adsorbent.

[0033] The timing component 9 includes a timing device 901 and a PLC controller 902. Through the setup of adsorbent tank A3, adsorbent tank B4, and the timing component 9, during use, it is connected to an external hot steam source via a nitrogen connecting pipe 21. The timing device 901 sets a timing threshold. When the threshold is reached, the PLC controller 902 controls the first electric ball valve 12 at the bottom of adsorbent tank A3 to close, and the second electric ball valve 13 of adsorbent tank B4 to open. Simultaneously, the three-way electric ball valve pipe 22 is opened to allow desorption and regeneration into adsorbent tank A3. The three-way electric ball valve A14 on adsorbent tank A3 is opened to allow the desorbed VOCs to be transported to the condenser body 20 for condensation and recovery. This process repeats, one adsorption and one desorption, increasing the efficiency of adsorption and condensation.

[0034] The gas delivery mechanism includes a long gas delivery pipe 11 fixedly connected to the other side of the filter box 2. A first electric ball valve 12 and a second electric ball valve 13 are fixedly connected to the top of the long gas delivery pipe 11. The top of the first electric ball valve 12 is fixedly connected to the middle of the bottom of the adsorbent tank A3, and the top of the second electric ball valve 13 is fixedly connected to the middle of the bottom of the adsorbent tank B4. The first electric ball valve 12 and the second electric ball valve 13 are used to control the gas intake of the adsorbent tank A3 and the adsorbent tank B4.

[0035] The discharge mechanism includes a three-way electric ball valve A14 fixedly connected to the top of the adsorbent tank A3. A recovery long pipe 15 is fixedly connected to the top of the three-way electric ball valve A14, and a three-way electric ball valve B16 is fixedly connected to the bottom of the recovery long pipe 15. The bottom of the three-way electric ball valve B16 is fixedly connected to the top of the adsorbent tank B4. A tail gas discharge pipe 17 is fixedly connected to one side of both the three-way electric ball valve A14 and the three-way electric ball valve B16. The three-way electric ball valves A14 and B16 are used to discharge the desorbed VOCs gas.

[0036] A fan 18 is fixedly connected to the front end of the condenser body 20. A connecting pipe 19 is fixedly connected to one end of the fan 18. The connecting pipe 19 is fixedly connected to the recovery long pipe 15. A refrigerant inlet and a refrigerant outlet are provided above the condenser body 20, and an external recovery transfer pipe is provided below. The condenser body 20 is designed to condense VOCs gas and facilitate liquid recovery.

[0037] Nitrogen gas connecting pipe 21 is fixedly connected to one side of the surface of adsorbent tank A3 and adsorbent tank B4. A three-way electric ball valve pipe 22 is fixedly connected to one end of the nitrogen gas connecting pipe 21. The three-way electric ball valve pipe 22 is used to connect to an external hot steam source. The setting of the three-way electric ball valve pipe 22 plays the role of switching.

[0038] The filter assembly 5 includes a filter screen 501 disposed inside the filter box 2. A fiber layer 502 is disposed on the back of the filter screen 501. The filter assembly 5 serves to filter impurities.

[0039] The cooling component 8 includes a water tank 801 fixedly installed on the surface of the substrate 1. A water pump 802 is installed at the top of the water tank 801. The output end of the water pump 802 is fixedly connected to the liquid inlet on the air inlet jacket pipe 6. A condensing device 803 is connected to the other side of the water tank 801 through a through pipe. A circulation pipe is connected to the input end of the condensing device 803. The cooling component 8 achieves the function of cooling.

[0040] The timing component 9 includes a timing device 901 fixedly mounted on the surface of the substrate 1. A PLC controller 902 is electrically connected to one side of the timing device 901 via a power cord. The timing component 9 serves to achieve timing-based de-adhesion.

[0041] The heat dissipation component 7 includes thermally conductive silicone 701 fixedly connected to the surface of the intake jacket pipe 6. Heat dissipation fins 702 are fixedly connected to the surface of the thermally conductive silicone 701. The heat dissipation component 7 is designed to accelerate the reduction of exhaust gas temperature.

[0042] Both adsorbent tanks A3 and B4 are fixedly connected to the bottom of an electric discharge ball valve 23. The bottom of the electric discharge ball valve 23 is fixedly connected to an external drain pipe 24. The external drain pipe 24 is used to recover the regenerated liquid.

[0043] In this invention, the working steps of the device are as follows:

[0044] First step: When in use, connect the nitrogen gas connecting pipe 21 to the external hot steam source. Set a timer threshold on the timer device 901. When the time threshold is reached, the PLC controller 902 controls the first electric ball valve 12 at the bottom of the adsorbent tank A3 to close and the second electric ball valve 13 of the adsorbent tank B4 to open. At the same time, the three-way electric ball valve pipe 22 is opened to desorb and regenerate the adsorbent tank A3. The three-way electric ball valve A14 on the adsorbent tank A3 is opened to allow the desorbed VOCs to be transported to the condenser body 20 for condensation and recovery.

[0045] The second step: During use, based on the boiling point of the adsorbent, the PLC controller 902 sets a high temperature threshold, and the temperature sensor 10 monitors the temperature of the exhaust gas. When the threshold is reached, the condensation device 803 and the water pump 802 are started to deliver water into the air inlet jacket pipe 6 to pre-cool the exhaust gas. When passing through the filter box 2, the filter screen 501 and the fiber layer 502 can first filter the impurity particles in the exhaust gas, thus optimizing the adsorption and condensation settings.

[0046] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0047] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adsorption-condensation device for multi-component VOCs recovery, comprising a substrate (1), a filter box (2), an adsorbent tank A (3), an adsorbent tank B (4), and a condenser body (20), characterized in that: The filter box (2) is equipped with a filter assembly (5) inside. An air inlet jacket pipe (6) is fixedly connected to the other end of the filter box (2). A heat dissipation assembly (7) is provided on the surface of the air inlet jacket pipe (6). A cooling assembly (8) and a timing assembly (9) are fixedly installed on the surface of the substrate (1). A temperature sensor (10) is fixedly connected inside the air inlet jacket pipe (6). A gas delivery mechanism is fixedly connected to the other side of the filter box (2). A discharge mechanism is fixedly connected to the top of the adsorbent tank A (3). The filter assembly (5) includes a filter screen (501) and a fiber layer (502); The cooling component (8) includes a water tank (801), a water pump (802), and a condensation device (803); The timing component (9) includes a timing device (901) and a PLC controller (902).

2. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: The gas delivery mechanism includes a gas delivery pipe (11) fixedly connected to the other side of the filter box (2). A first electric ball valve (12) and a second electric ball valve (13) are fixedly connected above the gas delivery pipe (11). The top end of the first electric ball valve (12) is fixedly connected to the middle of the bottom end of the adsorbent tank A (3), and the top end of the second electric ball valve (13) is fixedly connected to the middle of the bottom end of the adsorbent tank B (4).

3. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: The discharge mechanism includes a three-way electric ball valve A (14) fixedly connected to the top of the adsorbent tank A (3). A recovery long pipe (15) is fixedly connected to the top of the three-way electric ball valve A (14). A three-way electric ball valve B (16) is fixedly connected to the bottom of the recovery long pipe (15). The bottom of the three-way electric ball valve B (16) is fixedly connected to the top of the adsorbent tank B (4). A tail gas discharge pipe (17) is fixedly connected to one side of both the three-way electric ball valve A (14) and the three-way electric ball valve B (16).

4. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: A fan (18) is fixedly connected to the front end of the condenser body (20), and a connecting pipe (19) is fixedly connected to one end of the fan (18). The connecting pipe (19) is fixedly connected to the recovery long pipe (15). A refrigerant inlet and a refrigerant outlet are provided above the condenser body (20), and an external recovery transfer pipe is provided below.

5. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: A nitrogen gas connecting pipe (21) is fixedly connected to one side of the surface of the adsorbent tank A (3) and the adsorbent tank B (4). A three-way electric ball valve pipe (22) is fixedly connected to one end of the nitrogen gas connecting pipe (21). The three-way electric ball valve pipe (22) is used to connect to an external hot steam source.

6. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: The filter assembly (5) includes a filter screen (501) disposed inside the filter box (2), and a fiber layer (502) is disposed on the back side of the filter screen (501).

7. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: The cooling component (8) includes a water tank (801) fixedly installed on the surface of the substrate (1). A water pump (802) is installed at the top of the water tank (801). The output end of the water pump (802) is fixedly connected to the liquid inlet on the air inlet jacket pipe (6). A condensing device (803) is connected to the other side of the water tank (801) through a through pipe. A circulation pipe is connected to the input end of the condensing device (803).

8. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: The timing component (9) includes a timing device (901) fixedly mounted on the surface of the substrate (1), and a PLC controller (902) is electrically connected to one side of the timing device (901) via a power line.

9. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: The heat dissipation assembly (7) includes thermally conductive silicone (701) fixedly connected to the surface of the air intake jacket (6), and heat dissipation fins (702) are fixedly connected to the surface of the thermally conductive silicone (701).

10. The adsorption-condensation device for multi-component VOCs recovery according to claim 1, characterized in that: The bottom ends of both adsorbent tank A (3) and adsorbent tank B (4) are fixedly connected to discharge electric ball valves (23), and the bottom ends of the discharge electric ball valves (23) are fixedly connected to external discharge pipes (24).

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