A VOCs condensation adsorption device

Abstract

This invention relates to the field of waste gas treatment technology, specifically disclosing a VOCs condensation adsorption device, comprising: a shell, a mounting base, a filter element, a driving element, and a cleaning element. The filter element includes a mounting frame and multiple filter structures. The mounting frame is connected to the driving element, which can drive the mounting frame to rotate. Multiple filter structures are mounted on the mounting frame. Each filter structure includes a first filter plate, a second filter plate, and a connecting element. The first filter plate is connected to the mounting frame, the second filter plate is slidably connected to the mounting frame, and the connecting element connects the second filter plate and the mounting frame. The first filter plate has multiple first through holes, and the second filter plate has multiple second through holes. The multiple first through holes correspond to the multiple second through holes, and the overlapping and connecting portions of the first and second through holes form filter holes. The VOCs condensation adsorption device of this invention first enlarges the filter holes and then uses hot brine to clean the oil and particulate dust adhering to the filter mechanism in a timely manner, thereby improving the treatment efficiency of VOCs waste gas.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a VOCs condensation and adsorption device. Background Technology

[0002] VOCs (volatile organic compounds) refer to organic compounds that are easily volatilized at room temperature. They originate from waste gases from various industrial processes and daily life activities. The volatilization of VOCs exists in all stages of production, loading and unloading, storage, and bottling in the petrochemical industry, such as refineries, coking plants, and PO and PX storage facilities. Because VOCs are very easy to volatilize during production, storage, transportation, sales, and use, they create very serious stationary emission sources of VOCs, which not only cause resource losses but also pose potential fire hazards. At the same time, toxic VOCs seriously pollute the environment and endanger the health of employees.

[0003] Chinese patent application CN120325042A discloses a VOCs adsorption and condensation treatment device, including a base with a boss fixedly connected to it, and a bottom plate fixedly connected to the boss. Several sets of limiting blocks are fixedly connected to the side wall of the bottom plate, and each of the limiting blocks has a sliding column fixedly connected to it. A top support is fixedly connected to the top of each sliding column. A sliding plate is slidably connected to each sliding column. By opening a second solenoid valve, the sliding plate moves downward to compress a telescopic airbag, thereby discharging the VOCs waste gas inside the telescopic airbag through a first air guide pipe. The telescopic airbag collects the VOCs waste gas, and further processing is performed after the amount of VOCs waste gas reaches a preset value.

[0004] In operation, VOCs waste gas generated by the chemical equipment enters the telescopic airbag through the air inlet pipe. As the gas increases, the telescopic airbag expands and moves the sliding plate upward along several sets of sliding columns. When the contact block moves upward, it contacts the pressure sensor and applies pressure to the sensor. By monitoring the pressure value of the pressure sensor, when the gas volume in the telescopic airbag reaches a preset value, the second solenoid valve is opened, causing the sliding plate to move downward and compress the telescopic airbag. This forces the VOCs waste gas in the telescopic airbag to be discharged through the first air guide pipe. The telescopic airbag collects the VOCs waste gas, and further processing is carried out after the amount of VOCs waste gas reaches the preset value.

[0005] However, the aforementioned patent documents also have the following shortcomings: When treating VOCs waste gas, it is necessary to first pass the VOCs into a packed scrubbing tower for washing and filtration, and then into a filter for filtration, in order to prevent particulate dust in the VOCs from entering the activated carbon tower and clogging the gaps of the activated carbon particles. However, when VOCs containing oil mist enter the filter, the oil mist and particulate dust mix and easily adhere tightly to the filter screen inside the filter, thus causing the filter screen to become clogged. The filter screen needs to be cleaned in time, which can easily reduce the treatment efficiency of VOCs waste gas. Summary of the Invention

[0006] This invention provides a VOCs condensation adsorption device, which aims to solve the problem in related technologies where the mixture of oil mist and particulate dust easily adheres tightly to the filter screen inside the filter, causing filter screen blockage and requiring timely cleaning, which easily reduces the efficiency of VOCs waste gas treatment.

[0007] The VOCs condensation adsorption device of the present invention includes a packed scrubbing tower, a gas conveying mechanism, an adsorption mechanism, an emission mechanism, a desorption mechanism, and a condensation recovery mechanism. It also includes a filtration mechanism, which further includes a housing, a mounting base, a filter element, a driving component, and a cleaning component. The mounting base is connected to the housing, the filter element is installed within the mounting base, and the driving component is connected to the mounting base. The filter element is connected to the driving component, and the filter element includes a mounting frame and multiple filter structures. The mounting frame is connected to the driving component, which drives the mounting frame to rotate. Multiple filter structures are mounted on the mounting frame. Each filter structure includes a first filter plate, a second filter plate, and a connecting component. The first filter plate is connected to the mounting frame, the second filter plate is slidably connected to the mounting frame, and the connecting component connects the second filter plate and the mounting frame. The first filter plate has multiple first through holes, and the second filter plate has multiple second through holes. The multiple first through holes correspond to the multiple second through holes. The overlapping and connecting portions of the first and second through holes form filter holes. The driving component drives the connecting component to extend and retract, causing the connecting component to move the second filter plate. The cleaning component is connected to the mounting base and is used to clean the filter structures.

[0008] Beneficial effects: When cleaning the mixture of oil and particulate dust adhering to the filter structure, the drive component drives the mounting frame to rotate, causing the mounting frame to move multiple filter structures along a circular trajectory, thereby moving the filter structure to be cleaned into the cleaning component. After the filter structure to be cleaned is moved into the cleaning component, the drive component stops driving the mounting frame to rotate, and then the drive component is activated to drive the connecting component to retract, which in turn drives the second filter plate to move, thereby increasing the overlap area of ​​the first and second through holes, and thus increasing the filter holes. Then the cleaning component is activated to clean the mixture of oil and particulate dust on the filter structure, thereby cleaning the filter structure in a timely manner and improving the treatment efficiency of VOCs exhaust gas.

[0009] Preferably, the connector consists of a vent pipe and a telescopic sleeve. The vent pipe is connected to the mounting frame, which is provided with multiple air passages. The multiple air passages are respectively connected to the vent pipes on the multiple connectors, and the telescopic sleeve is connected to the filter plate.

[0010] Its effect is that the driving component can draw gas from the air pipe through the air passage, so that the telescopic sleeve can drive the filter plate 2 located inside the cleaning component to move, thereby increasing the overlapping area of ​​the through hole 1 and through hole 2, thereby increasing the filter hole, reducing the connection strength between the mixture of oil mist and particulate dust and the filter hole, so as to facilitate the cleaning of the mixture of oil mist and particulate dust through the cleaning component.

[0011] Preferably, the mounting bracket is provided with multiple openings, all of which are fan-shaped, and multiple filter structures are respectively connected to the multiple openings.

[0012] Its effect is that by setting up multiple filter structures, they can be used alternately to ensure the continuous filtration of VOCs exhaust gas.

[0013] Preferably, the driving component includes a rotating part, a fixed arm, a fixed ring, and a driving source. The fixed ring is connected to the mounting base via the fixed arm, the driving source is connected to the fixed arm, the rotating part is rotatably connected to the inner side of the fixed ring, the output end of the driving source is connected to the rotating part, and the mounting bracket is connected to the rotating part.

[0014] Its effect is that when the rotating part is driven to rotate by the drive source, the rotating part can drive the mounting frame to rotate, thereby providing power for the rotation of the mounting frame.

[0015] Preferably, the fixed ring has an internal cavity and an external opening that can communicate with the air passage at the filter structure to be cleaned. An air supply pipe is connected to the fixed ring, and the end of the air supply pipe away from the fixed ring is connected to an external air pump.

[0016] Its effect is as follows: when the external air pump is started, the air in the fixed ring is drawn through the air supply pipe so that the air in the air passage enters the cavity through the port. When the air in the air passage is drawn, it can drive the connecting piece, so that the connecting piece drives the filter plate two to move, thereby providing power for the filter plate two to move and increase the overlapping area of ​​the through hole one and the through hole two.

[0017] Preferably, the cleaning component includes a shielding part and a water spray pipe. There are two shielding parts, both of which are connected to the mounting base. A cleaning chamber is provided in each of the two shielding parts. There are two water spray pipes, both of which are connected to the cleaning chamber. The two water spray pipes are located on the left and right sides of the mounting frame, respectively. One end of each water spray pipe is connected to an external water supply device.

[0018] Its effect is that hot brine can be delivered to two spray pipes through an external water supply device, and the hot brine can be sprayed onto the filter structure to be cleaned by the two spray pipes, so as to clean the oil mist and particulate dust mixture on the filter structure through the hot brine.

[0019] Preferably, the cleaning component further includes an air jet pipe, and two shielding parts are also provided with a second cleaning chamber. The air jet pipe is connected to the second cleaning chamber, and the second cleaning chamber is connected to the outside through an air outlet pipe. The air outlet pipe can discharge the air in the second cleaning chamber to the outside. The air jet pipe is connected to an external air supply device.

[0020] Its effect is as follows: after cleaning the filter structure with hot brine, the filter structure is moved into the second cleaning chamber, and the external air supply equipment is activated to deliver air into the jet pipe. The jet pipe blows the air onto the cleaned filter structure, thereby drying the cleaned filter structure so that it can be used for subsequent filtration of VOCs waste gas.

[0021] Preferably, the mounting base is provided with a holding cavity, which is connected to the cleaning cavity.

[0022] Its effect is that the mixture of hot brine, oil, and particulate dust that has been cleaned flows into the container cavity for collection.

[0023] Preferably, the cleaning component further includes a discharge pipe connected to the mounting base and communicating with the container cavity.

[0024] Its effect is that the mixture of hot brine, oil and particulate dust in the container can be discharged to the outside through the discharge pipe.

[0025] Preferably, the filtration mechanism is connected to the packing washing tower, the gas conveying mechanism is connected between the filtration mechanism and the adsorption mechanism, the adsorption mechanism includes two sets of activated carbon adsorption towers, each set of activated carbon adsorption towers is set to two, the emission mechanism is connected to the adsorption mechanism, and the condensation recovery mechanism is connected to the adsorption mechanism.

[0026] The effect is as follows: After VOCs waste gas is transported to the packed scrubbing tower, it is treated and filtered by the packed scrubbing tower. Then, the VOCs waste gas enters the filtration mechanism, where the oil mist and particulate dust in the VOCs waste gas are filtered again. After being filtered by the filtration mechanism, the VOCs waste gas is transported to one of the activated carbon adsorption towers through the gas conveying mechanism. The activated carbon in the activated carbon adsorption tower adsorbs the VOCs waste gas. The VOCs waste gas after activated carbon adsorption is discharged to the outside through the emission mechanism. After the activated carbon in the activated carbon adsorption tower is saturated, the gas conveying mechanism stops supplying VOCs waste gas to the activated carbon adsorption tower and supplies VOCs waste gas to the other activated carbon adsorption tower. The steam generated by activated carbon desorption enters the condensation and recovery mechanism, where the steam is condensed to recover the desorbed organic matter. By alternating the use of the two sets of activated carbon adsorption towers, continuous treatment of VOCs waste gas can be achieved.

[0027] The beneficial effects of this invention are:

[0028] 1. When cleaning the mixture of oil and particulate dust on the filter structure, the connecting component first drives the filter plate two to move, thereby increasing the overlapping area of ​​through holes one and two, and thus enlarging the filter holes. This mechanically breaks down the blockage layer of the oil and particulate dust mixture, forming a smoother flow channel. This allows the subsequent hot brine cleaning to penetrate deeper into the filter holes. Then, the cleaning component is activated, spraying hot brine onto the filter structure. The hot brine cleans the mixture of oil and particulate dust on the filter structure, thus cleaning the filter structure in a timely manner and improving the treatment efficiency of VOCs exhaust gas.

[0029] 2. By alternating the use of two sets of activated carbon adsorption towers, continuous treatment of VOCs waste gas can be achieved. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0031] Figure 2 This is a cross-sectional three-dimensional structural diagram of the filtration mechanism of the present invention.

[0032] Figure 3 This is a side view of the mounting base, filter, drive, and cleaning components of the present invention.

[0033] Figure 4 This is a side cross-sectional view of the mounting base, filter, drive, and cleaning components of the present invention.

[0034] Figure 5 This is a schematic diagram of the mounting base, filter, drive, and cleaning components of the present invention from another side.

[0035] Figure 6 This is a three-dimensional structural diagram of the filtration mechanism of the present invention.

[0036] Figure 7 This is a side view cross-sectional structural schematic diagram of the rotating part of the present invention.

[0037] Figure 8 This is a side cross-sectional view of the mounting bracket and rotating part of the present invention.

[0038] Figure label:

[0039] 1. Filtering mechanism; 11. Housing; 12. Mounting base; 121. Container cavity; 13. Filter element; 131. Mounting bracket; 132. Filter plate one; 133. Filter plate two; 134. Connecting part; 135. Air passage; 14. Driving component; 141. Rotating part; 142. Fixed arm; 143. Fixed ring; 144. Driving source; 145. Air supply pipe; 146. Cavity; 147. Port; 15. Cleaning component; 151. Blocking part; 152. Cleaning chamber one; 153. Cleaning chamber two; 154. Water spray pipe; 155. Air jet pipe; 156. Discharge pipe; 2. Air supply mechanism; 3. Adsorption mechanism; 4. Discharge mechanism; 5. Desorption mechanism. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] like Figures 1 to 8As shown, the VOCs condensation adsorption device of the present invention includes a packed scrubbing tower, a filtration mechanism 1, a gas conveying mechanism 2, an adsorption mechanism 3, an emission mechanism 4, a desorption mechanism 5, and a condensation recovery mechanism. The packed scrubbing tower can perform initial filtration of VOCs waste gas containing oil mist (the packed scrubbing tower is prior art and is not shown in the figure, so it will not be described in detail here). The filtration mechanism 1 is connected to the packed scrubbing tower. The VOCs waste gas after passing through the packed scrubbing tower can enter the filtration mechanism 1 for secondary filtration, thereby removing oil mist and particulate dust in the VOCs waste gas. This prevents particulate dust or oil mist from entering the adsorption mechanism 3 and causing blockage of the activated carbon gaps. At the same time, the filtration mechanism 1 is automatically cleaned to prevent oil mist and particulate dust from mixing and adhering tightly to the filtration mechanism 1, causing blockage, thus improving the treatment efficiency of VOCs waste gas. The gas conveying mechanism 2 is connected between the filtration mechanism 1 and the adsorption mechanism 3. The adsorption mechanism 3 consists of two sets of activated carbon adsorption towers. The gas conveying mechanism 2 is connected to each of the two sets of activated carbon adsorption towers. The number of activated carbon adsorption towers in each set is set to two. The gas conveying mechanism 2 can convey the gas after passing through the filtration mechanism 1 to the adsorption mechanism 3 for secondary filtration. VOCs waste gas is fed into one set of activated carbon adsorption towers. The emission mechanism 4 is connected to the adsorption mechanism 3. After adsorption treatment by the adsorption mechanism 3, the VOCs waste gas can be discharged through the emission mechanism 4. The desorption mechanism 5 is connected to the adsorption mechanism 3. After the activated carbon in one set of activated carbon adsorption towers becomes saturated, the gas supply mechanism 2 stops supplying VOCs waste gas to that set of activated carbon adsorption towers, and the gas supply mechanism 2 supplies VOCs waste gas to another set of activated carbon adsorption towers. The desorption mechanism 5 then supplies the corresponding set of activated carbon adsorption towers with distilled gas. Steam is introduced to desorb the activated carbon. After desorption, the gas conveying mechanism 2 continues to supply VOCs waste gas to the activated carbon adsorption tower. By alternating the use of the two sets of activated carbon adsorption towers, continuous treatment of VOCs waste gas can be achieved. The condensation recovery mechanism is connected to the two sets of activated carbon adsorption towers. The steam formed after activated carbon desorption enters the condensation recovery mechanism. The condensation recovery mechanism can condense the steam, thereby recovering the desorbed organic matter (the condensation recovery mechanism is existing technology and is not shown in the figure, so it will not be described in detail here).

[0042] In operation, VOCs waste gas containing oil mist is first conveyed to a packed filter tower for treatment and filtration. The waste gas then enters filter unit 1, where it is further filtered to remove oil mist and particulate matter. Filter unit 1 is also automatically cleaned to prevent oil mist and particulate matter from mixing and adhering tightly to the filter unit, thus improving the treatment efficiency. After filtration by filter unit 1, the VOCs waste gas is then conveyed through a gas delivery mechanism. 2. The gas is transported to one of the activated carbon adsorption towers, where the activated carbon adsorbs the VOCs waste gas. After the VOCs waste gas is adsorbed by the activated carbon, it is discharged to the outside by the emission mechanism 4. After the activated carbon in the activated carbon adsorption tower is saturated, the gas supply mechanism 2 stops supplying VOCs waste gas to the activated carbon adsorption tower and supplies VOCs waste gas to another set of activated carbon adsorption towers. The steam generated by the desorption of activated carbon enters the condensation and recovery mechanism, where the steam is condensed to recover the desorbed organic matter.

[0043] like Figures 1 to 7 As shown, the filter mechanism 1 includes a housing 11, a mounting base 12, a filter element 13, a drive element 14, and a cleaning element 15. The mounting base 12 is connected inside the housing 11, and the filter element 13 is installed inside the mounting base 12. The filter element 13 can filter VOCs exhaust gas. The drive element 14 is connected to the mounting base 12, and the filter element 13 is connected to the drive element 14. The drive element 14 can drive the filter element 13 to rotate and adjust the size of the filter holes on the filter element 13 to facilitate the subsequent cleaning of oil and particulate dust clogging the filter holes. The cleaning element 15 is connected to the mounting base 12 and can clean the oil and particulate dust on the filter element 13.

[0044] When VOCs waste gas is filtered again, the VOCs waste gas enters the housing 11 and passes through the filter element 13. The filter element 13 filters the VOCs waste gas. The VOCs waste gas after passing through the filter element 13 enters the gas conveying mechanism 2 and is transported by the gas conveying mechanism 2 to the corresponding set of activated carbon adsorption towers. When the filter element 13 is blocked, the driving element 14 drives the part of the filter element 13 to be cleaned to move into the cleaning element 15. At the same time, the driving element 14 pushes the filter element 13 to enlarge the filter holes on the filter element 13. Then the cleaning element 15 cleans the blocked filter element 13.

[0045] Continue to refer to Figures 1 to 8As shown, the filter element 13 includes a mounting frame 131 and multiple filter structures. The mounting frame 131 has multiple openings, all of which are fan-shaped. The multiple filter structures are connected to the multiple openings respectively. The cleaning component 15 can block some of the filter structures, and the remaining filter structures not blocked by the cleaning component 15 can filter VOCs exhaust gas. The filter structure includes a first filter plate 132, a second filter plate 133, and a connecting component 134. The first filter plate 132 is connected to the opening, and the second filter plate 133 is slidably connected to the opening. The first filter plate 132 and the second filter plate 133 are staggered. The first filter plate 132 has multiple through holes 1, and the second filter plate 133 has multiple through holes 2. The multiple through holes 1 and the multiple through holes 2 are respectively arranged corresponding to each other. The overlapping and connecting parts of the through holes 1 and through holes 2 form a filter hole. Through this filter hole, the VOCs exhaust gas can be filtered. The filter filters oil mist and particulate dust. Connector 134 is connected between filter plate 133 and mounting bracket 131. Connector 134 consists of a vent pipe and a telescopic sleeve. The vent pipe is connected to the mounting bracket 131, which has multiple air passages 135. The multiple air passages 135 are connected to the vent pipes on the multiple connectors 134. The telescopic sleeve is connected to filter plate 133. Drive unit 14 can draw gas from the vent pipe through the air passage 135, so that the telescopic sleeve drives filter plate 133 to move and increase the overlapping area of ​​through hole 1 and through hole 2, thereby increasing the filter pore size. At the same time, the blockage layer of oil and particulate dust mixture is mechanically destroyed, forming a smoother flow channel, so that the subsequent hot brine cleaning can penetrate deeper into the filter pores, so that the mixture of oil mist and particulate dust can be cleaned by cleaning unit 15.

[0046] The drive unit 14 drives the mounting bracket 131 to rotate, so that the mounting bracket 131 drives multiple filter structures to move along a circular trajectory, thereby moving the filter structure to be cleaned into the cleaning unit 15. After cleaning, the filter structure is separated from the cleaning unit 15 and continues to filter VOCs exhaust gas. At the same time, the drive unit 14 draws gas from the ventilation pipe through the air passage 135, so that the telescopic sleeve drives the filter plate 133 to move, thereby increasing the overlapping area of ​​the through hole 1 and through hole 2, and thus increasing the filter holes. Then the cleaning unit 15 cleans the filter structure to be cleaned.

[0047] Continue to refer to Figures 1 to 8As shown, the driving component 14 includes a rotating part 141, a fixed arm 142, a fixed ring 143, a driving source 144, and an air supply pipe 145. The fixed ring 143 is connected to the mounting base 12 via the fixed arm 142. The fixed ring 143 has a cavity 146 inside and a through-hole 147 on the outside, which can communicate with the air passage 135 at the filter structure to be cleaned. The air supply pipe 145 is connected to the fixed ring 143, and the end of the air supply pipe 145 away from the fixed ring 143 is connected to an external air pump (not shown in the figure). When the external air pump is started, the air is drawn from the fixed ring 143 through the air supply pipe 145. Air in ring 143 is drawn into air passage 135 through port 147 into cavity 146. When air in air passage 135 is drawn out, it drives connector 134, causing connector 134 to move filter plate 133. Drive source 144 is connected to fixed arm 142. Rotating part 141 is rotatably connected to the inner side of fixed ring 143, and the output end of drive source 144 is connected to rotating part 141. Mounting bracket 131 is connected to rotating part 141. Activating drive source 144 can drive rotating part 141 to rotate. When rotating part 141 rotates, it can drive mounting bracket 131 to rotate.

[0048] When VOCs exhaust gas is filtered by the filter structure, the filter holes on the filter structure become clogged by a mixture of oil mist and particulate dust. The drive source 144 is started to drive the mounting frame 131 to rotate, so that the mounting frame 131 drives multiple filter structures to move along a circular trajectory, thereby moving the filter structure to be cleaned into the cleaning component 15. Then, the external air pump is started to draw air from the cavity 146 on the fixing ring 143 through the air supply pipe 145, so that the air in the air passage 135 enters the cavity 146 through the through port 147. When the air in the air passage 135 is drawn, it can drive the connecting component 134, so that the connecting component 134 drives the filter plate 133 to move, thereby increasing the overlapping area of ​​the through hole 1 and the through hole 2, and thus increasing the filter holes.

[0049] Continue to refer to Figures 1 to 8As shown, the cleaning component 15 includes a shielding part 151, a first cleaning chamber 152, a second cleaning chamber 153, a water spray pipe 154, an air spray pipe 155, and a discharge pipe 156. Two shielding parts 151 are provided, each connected to the mounting base 12. The two shielding parts 151 are respectively located on the left and right sides of the mounting bracket 131. The two shielding parts 151 can shield the filter structure to be cleaned. The first cleaning chamber 152 and the second cleaning chamber 153 are provided within the two shielding parts 151. The water spray pipe 154 is... There are two water spray pipes 154, both of which are connected to the cleaning chamber 152. The two water spray pipes 154 are located on the left and right sides of the mounting frame 131, respectively. One end of each water spray pipe 154 is connected to an external water supply device (the external water supply device is existing technology and is not shown in the figure). The external water supply device can deliver hot brine to the two water spray pipes 154, and the two water spray pipes 154 spray the hot brine onto the filter structure to be cleaned. The hot brine cleans the oil mist and particulate dust mixture on the filter structure.

[0050] The mounting base 12 has a holding chamber 121, which is connected to the first cleaning chamber 152. The mixture of hot brine, oil, and particulate dust that has been cleaned flows into the holding chamber 121 for collection. A discharge pipe 156 is connected to the mounting base 12 and is connected to the holding chamber 121. The mixture of hot brine, oil, and particulate dust in the holding chamber 121 can be discharged outward through the discharge pipe 156. An air jet pipe 155 is connected to the second cleaning chamber 153, which is connected to the outside through an air outlet pipe. The air outlet pipe can discharge the mixture of hot brine, oil, and particulate dust from the second cleaning chamber 152. Air inside chamber 53 is discharged outwards. The jet pipe 155 is connected to an external air supply device (the external air supply device is existing technology and is not shown in the figure). After the filter structure is cleaned with hot brine, the drive component 14 drives the mounting bracket 131 to rotate, so that the filter structure moves into the second cleaning chamber 153. The external air supply device is activated to deliver air into the jet pipe 155, and the jet pipe 155 blows the air onto the cleaned filter structure, thereby drying the cleaned filter structure so that it can be used for subsequent filtration of VOCs exhaust gas.

[0051] When cleaning the mixture of oil and particulate dust on the filter structure, the external water supply equipment is activated to deliver hot brine to two spray pipes 154. The hot brine is then sprayed onto the filter structure to be cleaned by the hot brine, which cleans the mixture of oil mist and particulate dust on the filter structure. The cleaned mixture of hot brine, oil, and particulate dust flows into the holding chamber 121 and is discharged to the outside through the discharge pipe 156. Then, the drive unit 14 is activated to drive the mounting bracket 131 to rotate, so that the filter structure moves into the second cleaning chamber 153. The external air supply equipment is activated to deliver air to the jet pipe 155, and the jet pipe 155 blows the air onto the cleaned filter structure, thereby drying the cleaned filter structure.

[0052] Working principle:

[0053] First, the VOCs waste gas containing oil mist is transported to the packed scrubbing tower, where it is treated and filtered. Then, the VOCs waste gas enters the filter unit 1.

[0054] The VOCs waste gas entering the filtration mechanism 1 is filtered by the unshielded filtration structure 151 and then transported to the gas conveying mechanism 2. The gas conveying mechanism 2 transports the filtered VOCs waste gas to one of the activated carbon adsorption towers. The activated carbon in the activated carbon adsorption tower adsorbs the VOCs waste gas. The VOCs waste gas after activated carbon adsorption is discharged to the outside through the emission mechanism 4. After the activated carbon in the activated carbon adsorption tower is saturated, the gas conveying mechanism 2 stops transporting VOCs waste gas into the activated carbon adsorption tower and transports VOCs waste gas into another set of activated carbon adsorption towers. The vapor generated by activated carbon desorption enters the condensation and recovery mechanism, which condenses the vapor to recover the desorbed organic matter.

[0055] When cleaning the filter structure in the filter mechanism 1, the drive source 144 is started to drive the mounting frame 131 to rotate, so that the mounting frame 131 drives multiple filter structures to move along a circular trajectory, and transports the filter structure to be cleaned into the first cleaning chamber 152, so that the through port 147 on the fixed ring 143 is connected to the air passage 135 corresponding to the filter structure. Then, the external air pump is started to draw air from the cavity 146 on the fixed ring 143 through the air supply pipe 145, so that the air in the air passage 135 enters the cavity 146 through the through port 147. When the air in the air passage 135 is drawn, the connecting member 134 is driven, so that the connecting member 134 drives the second filter plate 133 to move, thereby increasing the overlapping area of ​​the first through hole and the second through hole, and thus increasing the filter holes.

[0056] The external water supply equipment is activated to deliver hot brine to two spray pipes 154. The hot brine is then sprayed onto the filter structure to be cleaned by the two spray pipes 154. The hot brine cleans the oil mist and particulate dust mixture on the filter structure. The cleaned hot brine, oil and particulate dust mixture flows into the container chamber 121 and is discharged to the outside through the discharge pipe 156.

[0057] After the filter structure located in the second cleaning chamber 153 is cleaned, the external air pump is started to deliver air into the cavity 146 on the fixed ring 143. The air in the cavity 146 enters the air passage 135 through the port 147, thereby driving the connector 134 to move and reset the filter plate 133.

[0058] The drive unit 14 drives the mounting bracket 131 to rotate, so that the filter structure moves into the cleaning chamber 153. The external air supply equipment is activated to deliver air to the jet pipe 155, and the jet pipe 155 blows the air onto the cleaned filter structure, thereby drying the cleaned filter structure. Then, the multiple filter structures are cleaned in sequence by the cooperation of the water spray pipe 154 and the jet pipe 155.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A VOCs condensation adsorption device, comprising a packed scrubbing tower, a gas conveying mechanism, an adsorption mechanism, an emission mechanism, a desorption mechanism, and a condensation recovery mechanism, characterized in that, It also includes a filtration mechanism, which further includes a housing, a mounting base, filter elements, a drive unit, and a cleaning unit. The mounting base is connected to the housing, the filter elements are installed in the mounting base, and the drive unit is connected to the mounting base. The filter elements are connected to the drive unit. The filter elements include a mounting frame and multiple filter structures. The mounting frame is connected to the drive unit, which can drive the mounting frame to rotate. Multiple filter structures are all installed on the mounting frame. The filter structure includes filter plate one, filter plate two, and a connecting member. Filter plate one is connected to the mounting frame, filter plate two is slidably connected to the mounting frame, and the connecting member is connected between filter plate two and the mounting frame. Filter plate one is provided with multiple through holes one, and filter plate two is provided with multiple through holes two. The multiple through holes one and multiple through holes two are respectively provided. The overlapping and connecting parts of through holes one and through holes two form filter holes. The drive unit can drive the connecting member to extend and retract, so that the connecting member drives the filter plate two to move. The cleaning member is connected to the mounting base and is used to clean the filter structure. The connector consists of a vent pipe and a telescopic sleeve. The vent pipe is connected to the mounting frame, which has multiple air passages. These air passages are connected to the vent pipes on the connectors. The telescopic sleeve is connected to the filter plate. The driving component includes a rotating part, a fixed arm, a fixed ring, and a driving source. The fixed ring is connected to the mounting base via the fixed arm, the driving source is connected to the fixed arm, the rotating part is rotatably connected to the inner side of the fixed ring, the output end of the driving source is connected to the rotating part, and the mounting bracket is connected to the rotating part. The fixed ring has an internal cavity and an external opening that can connect to the air passage at the filter structure to be cleaned. The air supply pipe is connected to the fixed ring, and the end of the air supply pipe away from the fixed ring is connected to an external air pump. The mounting bracket is driven to rotate by a drive unit, which in turn moves multiple filter structures along a circular trajectory. This moves the filter structure to be cleaned into the cleaning unit. After the filter structure to be cleaned is moved into the cleaning unit, the drive unit stops driving the mounting bracket to rotate. Then, the drive unit is activated to retract the connecting piece, which in turn moves the second filter plate to increase the overlap area of ​​the first and second through holes, thereby increasing the size of the filter holes. Finally, the cleaning unit is activated to clean the filter structure.

2. The VOCs condensation adsorption device according to claim 1, characterized in that, The mounting bracket has multiple openings, each fan-shaped, and multiple filter structures are connected to these openings.

3. The VOCs condensation and adsorption device according to claim 1, characterized in that, The cleaning component includes a shielding part and a water spray pipe. There are two shielding parts, both of which are connected to the mounting base. Each shielding part contains a cleaning chamber. There are two water spray pipes, both of which are connected to the cleaning chamber. The two water spray pipes are located on the left and right sides of the mounting frame, respectively. One end of each water spray pipe is connected to an external water supply device.

4. The VOCs condensation and adsorption device according to claim 3, characterized in that, The cleaning component also includes an air jet pipe, and two shielding parts are provided with a second cleaning chamber. The air jet pipe is connected to the second cleaning chamber, which is connected to the outside through an air outlet pipe. The air outlet pipe can discharge the air in the second cleaning chamber to the outside. The air jet pipe is connected to an external air supply device.

5. The VOCs condensation and adsorption device according to claim 4, characterized in that, The mounting base is provided with a holding cavity, which is connected to the cleaning cavity.

6. The VOCs condensation adsorption device according to claim 5, characterized in that, The cleaning component also includes a discharge pipe, which is connected to the mounting base and communicates with the container cavity.

7. The VOCs condensation and adsorption device according to claim 1, characterized in that, The filtration mechanism is connected to the packing washing tower, the gas conveying mechanism is connected between the filtration mechanism and the adsorption mechanism, the adsorption mechanism includes two sets of activated carbon adsorption towers, each set of activated carbon adsorption towers is set to two, the emission mechanism is connected to the adsorption mechanism, and the condensation recovery mechanism is connected to the adsorption mechanism.

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