Photocatalysis and adsorption synergistic purification system

Abstract

The invention discloses a photocatalysis and adsorption synergetic purification system, which comprises a pretreatment mechanism, a waste heat recovery unit, a synergetic reactor, an absorption tower and a control mechanism, the pretreatment mechanism comprises a cyclone separator and a dehumidifier, the inlet of the dehumidifier is communicated with the outlet of the cyclone separator, and the inlet of the dehumidifier is communicated with the outlet of the cyclone separator; the waste heat recovery unit comprises a box body, a heat exchange pipe and a connecting cover, the connecting cover is arranged at the top of the box body, an air outlet is formed in the top of the connecting cover, at least part of the heat exchange pipe is located in the box body, and an air inlet is formed in the bottom of the box body; a plurality of light sources are arranged in the circumferential direction of the outer cylinder and used for irradiating the catalyst on the outer cylinder, the absorption tower is communicated with an outlet of the collaborative reactor, and the bottom of the absorption tower is communicated with the sedimentation tank. The photocatalysis and adsorption synergistic purification system provided by the invention has the advantages of good synergistic purification effect and low cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas treatment, in particular to a purification system with synergistic photocatalysis and adsorption. BACKGROUND

[0002] Currently, sulfur dioxide and nitrogen oxides in industrial flue gas are the main pollutants, and the desulfurization and denitrification technology has the disadvantages of low efficiency and poor stability. The use of activated carbon adsorption requires frequent replacement of adsorbents, which is high in cost, and the adsorbed pollutants are prone to secondary release. The waste heat in the flue gas is not fully utilized, resulting in low efficiency and high operating cost in the flue gas treatment process. SUMMARY

[0003] The present application is based on the inventors' discovery and understanding of the following facts and problems: single flue gas treatment method has poor effect. The present application aims to at least partially solve one of the technical problems in the related art. To this end, embodiments of the present application propose a purification system with synergistic photocatalysis and adsorption, which has the advantages of good synergistic purification effect and low cost.

[0004] The purification system with synergistic photocatalysis and adsorption according to the embodiments of the present application includes a pretreatment mechanism, a waste heat recovery unit, a synergistic reactor, an absorption tower and a control mechanism. The pretreatment mechanism includes a cyclone separator and a dehumidifier. The inlet of the dehumidifier is in communication with the outlet of the cyclone separator. The waste heat recovery unit includes a box, heat exchange pipes and a connecting cylinder. The connecting cylinder is arranged at the top of the box. The top of the connecting cylinder is provided with an air outlet. At least part of the heat exchange pipes is located in the box. The bottom of the box is provided with an air inlet. The synergistic reactor includes a guide plate, an inner cylinder and an outer cylinder. The inner cylinder is in communication with the air outlet through the guide plate. The inner cylinder is arranged with a composite adsorption material. A plurality of light sources are arranged along the circumference of the outer cylinder to irradiate the catalyst on the outer cylinder. The absorption tower is in communication with the outlet of the synergistic reactor. The bottom of the absorption tower is in communication with a sedimentation tank.

[0005] The purification system with synergistic photocatalysis and adsorption according to the embodiments of the present application has the advantages of good synergistic purification effect and low cost. The present application has the following advantages: adsorption and photocatalytic reaction are carried out synchronously in the same reactor. By adjusting the reaction conditions (such as light intensity and flue gas residence time), the adsorption rate and the degradation rate are matched, the reactor is prevented from exceeding the treatment load, the flue gas purification effect is good, the heat energy and cooling medium are fully recycled, and waste is reduced.

[0006] In some embodiments, a negative pressure mechanism is further included. The negative pressure mechanism includes a fixed cover and an exhaust fan. The fixed cover is arranged on the box corresponding to the air inlet. The exhaust fan is arranged in the fixed cover.

[0007] In some embodiments, a filtration mechanism is further included, the filtration mechanism including a connecting cover and an activated carbon plate, the connecting cover being connected to the connecting cylinder, the activated carbon plate being disposed inside the connecting cover, and the end of the connecting cover away from the connecting cylinder being connected to the guide plate.

[0008] In some embodiments, the guide plate is a spiral guide plate, and the spiral guide plate is connected to the bottom of the inner cylinder.

[0009] In some embodiments, a compression structure is further included on the inner cylinder. The compression structure includes a push rod and a pressure plate. The pressure plate is arranged inside the inner cylinder and abuts against the composite adsorption material. The telescopic end of the push rod is connected to the pressure plate, and the other end of the push rod is connected to the outer wall of the inner cylinder.

[0010] In some embodiments, a regeneration mechanism is also included, the regeneration mechanism comprising an ultraviolet generator and a bypass valve, the ultraviolet generator being disposed inside the inner cylinder and the bypass valve being disposed on a first pipeline for conveying flue gas from the inner cylinder to the outer cylinder.

[0011] In some embodiments, the inner cylinder and the outer cylinder share a central axis, and an annular space is formed between the inner cylinder and the outer cylinder.

[0012] In some embodiments, a variable frequency fan is provided on the outer side of the outer cylinder to regulate the flow rate of flue gas entering the outer cylinder.

[0013] In some embodiments, the system further includes at least two movable plates arranged in an annular space between the inner cylinder and the outer cylinder, the movable plates being movably connected to the inner cylinder to adjust the size of the annular space.

[0014] In some embodiments, the composite adsorption material arranged on the inner cylinder is a mesoporous molecular sieve loaded with nano-titanium dioxide and amino-graphene. Attached Figure Description

[0015] Figure 1 This is a flowchart of a purification system that combines photocatalysis and adsorption according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the waste heat recovery unit of the photocatalytic and adsorption synergistic purification system according to an embodiment of the present invention.

[0017] Figure 3 This is a cross-sectional schematic diagram of a purification system that combines photocatalysis and adsorption according to an embodiment of the present invention.

[0018] Figure 4is a cross-sectional view of a connecting cylinder of a photocatalysis and adsorption synergistic purification system according to an embodiment of the present application.

[0019] Reference signs: 1, box; 2, heat exchange pipe; 3, connecting cover; 4, air inlet; 5, air outlet; 6, connecting cylinder; 7, activated carbon plate; 8, mounting plate; 9, filter screen; 10, air extractor; 11, fixing cover. DETAILED DESCRIPTION

[0020] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0021] The photocatalysis and adsorption synergistic purification system according to an embodiment of the present application comprises a pretreatment mechanism, a waste heat recovery unit, a synergistic reactor, an absorption tower and a control mechanism. The pretreatment mechanism comprises a cyclone separator and a dehumidifier, the inlet of the dehumidifier is connected to the outlet of the cyclone separator. The waste heat recovery unit comprises a box 1, heat exchange pipes 2 and a connecting cylinder 6, the connecting cylinder 6 is arranged at the top of the box 1, the top of the connecting cylinder 6 is provided with an air outlet 5, at least part of the heat exchange pipes 2 are located in the box 1, the bottom of the box 1 is provided with an air inlet 4. The synergistic reactor comprises a flow guide plate, an inner cylinder and an outer cylinder, the inner cylinder is connected to the air outlet 5 through the flow guide plate, the inner cylinder is arranged with a composite adsorption material, a plurality of light sources are arranged along the circumference of the outer cylinder to irradiate the catalyst on the outer cylinder. The absorption tower is connected to the outlet of the synergistic reactor, the bottom of the absorption tower is connected to a sedimentation tank.

[0022] The cyclone separator is used to preliminarily remove large-particle solid impurities in the exhaust gas. Under the action of centrifugal force, the solid particles are thrown to the wall and separated from the gas. The cyclone separator reduces the burden of subsequent treatment and improves the overall purification efficiency. The dehumidifier dehumidifies the treated exhaust gas, reducing the moisture content in the exhaust gas and reducing the influence of moisture on subsequent adsorption and photocatalytic reaction. The box 1 of the waste heat recovery unit is used to accommodate and protect the internal components, providing a closed space for heat exchange. After the exhaust gas enters the box 1, it exchanges heat with the heat exchange pipe 2 in the box 1. The heat of the exhaust gas is transferred to the heat exchange medium such as water or heat conducting oil in the heat exchange pipe 2, realizing the recycling of waste heat and reducing the temperature of the exhaust gas. The connecting cylinder 6 arranged at the top of the box 1 can guide the airflow to reduce the airflow dispersion, and facilitate the airflow to flow to the guide plate after passing through the gas outlet 5. The guide plate sends the exhaust gas into the inner cylinder and fully contacts with the composite adsorption material. The guide plate can optimize the airflow distribution and reduce the airflow resistance, thereby improving the efficiency. There is a certain distance between the inner cylinder and the outer cylinder of the synergistic reactor. The exhaust gas flows from the inner cylinder to the outer cylinder, and the concentration of pollutants decreases with the increase of distance from the inner cylinder to the outer cylinder, thereby reducing the leakage of pollutants. The inner cylinder adsorbs pollutants through the composite adsorption material, and the outer cylinder decomposes pollutants through the cooperation of light source and catalyst for photocatalytic reaction. The light source is arranged in the circumferential direction to ensure the purification efficiency. The absorption tower is used to absorb and treat the purified exhaust gas. The sedimentation tank settles the absorption liquid of the absorption tower. The upper clear liquid is recycled and utilized, and the lower sediment can be recovered as a byproduct.

[0023] In some embodiments, a negative pressure mechanism is further included, which comprises a fixed cover and an exhaust fan 10. The fixed cover is arranged on the box 1 corresponding to the air inlet 4, and the exhaust fan 10 is arranged in the fixed cover.

[0024] Specifically, the fixed cover arranged at the air inlet 4 of the box 1 provides a mounting position for the exhaust fan 10, prevents leakage of external air, ensures formation and maintenance of negative pressure, and on the other hand guides the airflow so that the airflow can uniformly enter the exhaust fan 10, avoiding the generation of turbulence and vortex. The exhaust fan generates negative pressure to accelerate the airflow, and the control of the exhaust fan can adjust the air intake.

[0025] Optionally, a filter screen 9 is further arranged in the fixed cover, which filters the exhaust gas to reduce the influence of impurities in the exhaust gas on the exhaust fan 10.

[0026] The left and right sides of the box 1 are fixedly provided with mounting plates 8, and mounting holes are arranged on the mounting plates 8 to facilitate personnel to fix the box 1. The heat exchange pipe 2 in the box 1 is a serpentine pipe, and the two ends of the serpentine pipe extend out of the box 1 to the outside of the box 1. A control panel is arranged on the front of the box 1 to facilitate control of the box 1, and the control panel is electrically connected with the controller of the control mechanism. An instruction board can also be arranged on the front of the box 1 to facilitate personnel to understand the operation matters and procedures.

[0027] In some embodiments, the filter mechanism further comprises a connecting cover 3 connected to the connecting cylinder 6 and an activated carbon plate 7 arranged in the connecting cylinder 6, and the end of the connecting cover 3 away from the connecting cylinder 6 is connected to the flow guide plate.

[0028] Specifically, the connecting cylinder 6 connects the connecting cover 3 and the flow guide plate to realize the transition function, the connecting cylinder 6 is a high-temperature and corrosion-resistant cylinder, and the activated carbon plate 7 arranged inside the connecting cylinder 6 can further filter and purify the waste gas. The activated carbon has a highly developed pore structure and a large specific surface area, which can effectively adsorb organic pollutants, odor substances and part of heavy metal ions in the waste gas. The connecting cover 3 is used to protect the connecting cylinder 6, and on the other hand, the connecting cover 3 can ensure the air tightness between the connecting cylinder 6 and the flow guide plate.

[0029] In some embodiments, the flow guide plate is a spiral flow guide plate connected to the bottom of the inner cylinder.

[0030] Specifically, the spiral flow guide plate is a spiral coiled flow guide plate, the top of the flow guide plate is connected to the inner cylinder of the collaborative reactor, and the bottom of the flow guide plate is connected to the gas outlet 5 of the box body 1. After the waste gas is guided by the spiral flow guide plate, the gas flow distribution is optimized, forming a uniform spiral flow, prolonging the residence time of the waste gas in the inner cylinder, increasing the contact area and contact time of the waste gas with the composite adsorption material, thereby enhancing the adsorption effect. Spiral flow can avoid gas flow short circuit or local overload, improve the uniformity of gas flow distribution, and reduce the turbulence and resistance of gas flow when entering the inner cylinder, thereby reducing the energy consumption of the system and improving the operation efficiency.

[0031] In some embodiments, the compression structure further comprises a push rod and a pressing plate, the pressing plate is arranged on the inner side of the inner cylinder and abuts against the composite adsorption material, the telescopic end of the push rod is connected to the pressing plate, and the other end of the push rod is connected to the outer wall of the inner cylinder.

[0032] Specifically, the pressing plate arranged in the inner cylinder abuts against the composite adsorption material to apply pressure to the adsorption material. The telescopic end of the push rod is connected to the pressing plate, and the control of the pressing plate is realized by the telescopic action of the push rod. By telescoping the push rod, the pressure of the pressing plate on the adsorption material can be adjusted, thereby optimizing the filling density and contact effect of the adsorption material, ensuring that the adsorption material maintains a good contact state in the inner cylinder, and improving the adsorption efficiency. The compression structure can prevent the adsorption material from loosening or shifting due to gas flow impact during operation, ensuring that the adsorption material always maintains a good contact state.

[0033] Optionally, a plurality of adsorption layers are arranged in the inner cylinder, each adsorption layer uses different types of adsorption materials to realize layered adsorption of different pollutants in the exhaust gas, for example, the first layer uses macroporous adsorption material to adsorb large-particle impurities, the second layer uses microporous adsorption material to adsorb organic pollutants, and the third layer uses composite adsorption material to adsorb pollutants.

[0034] In some embodiments, a regeneration mechanism is further included, the regeneration mechanism includes an ultraviolet light generating device arranged in the inner cylinder and a bypass valve arranged on the first pipeline to deliver flue gas of the inner cylinder to the outer cylinder.

[0035] Specifically, after the adsorption material is used for a period of time, its adsorption performance will gradually decrease. At this time, the ultraviolet light generating device emits ultraviolet light to irradiate the adsorption material, so that the pollutant molecules adsorbed on the surface of the material are decomposed or volatilized, and the adsorption performance of the adsorption material is restored. When the adsorption capacity of the inner cylinder reaches the upper limit, the bypass valve is opened to directly discharge the flue gas to the outer cylinder through the first pipeline, so as to avoid that a large amount of pollutants affect the regeneration of the adsorption material of the inner cylinder. The regeneration mechanism reduces the replacement frequency of the adsorption material and reduces the operation cost.

[0036] In some embodiments, the inner cylinder and the outer cylinder share a central axis, and an annular space is formed between the inner cylinder and the outer cylinder.

[0037] Specifically, the inner cylinder and the outer cylinder share a central axis to form a concentric structure, and the annular space between the inner cylinder and the outer cylinder provides a path for flue gas flow and treatment, and a photocatalytic reaction can occur in the annular space to achieve degradation of pollutants. The catalyst is uniformly distributed on the inner wall of the outer cylinder to form a catalyst coating, and the catalyst can be fully activated by irradiation of the light source arranged circumferentially on the outer cylinder, thereby improving the utilization rate and reaction efficiency of the catalyst. The uniformly distributed catalyst in the annular space avoids local overload or air flow short circuit phenomenon, thereby improving the operation stability of the system.

[0038] In some embodiments, a variable frequency fan is arranged on the outer side of the outer cylinder to adjust the flue gas flow entering the outer cylinder.

[0039] Specifically, the variable frequency fan sends air outward to form a negative pressure in the annular space, thereby adjusting the flue gas flow entering the outer cylinder. The flue gas is adjusted by changing the rotation speed of the fan through frequency conversion. According to the system operation state, the flue gas flow is dynamically adjusted to ensure that the residence time of the flue gas on the surface of the catalyst is long enough, thereby improving the efficiency of the photocatalytic reaction. The variable frequency fan can handle exhaust gas with large flow fluctuation, reduce the energy consumption of the fan at low load of the system, and reduce the cost.

[0040] In some embodiments, at least two moving plates are further included, the two moving plates are arranged in the annular space between the inner cylinder and the outer cylinder, and the moving plates are movably connected to the inner cylinder to adjust the size of the annular space.

[0041] Specifically, two moving plates are arranged in the annular space, which can be annular plates. The two annular plates cooperate with the inner cylinder and the outer cylinder to form a closed annular space, and the size of the annular space is adjusted by changing the distance between the two annular plates. By adjusting the size of the annular space, the residence time and flow rate of the flue gas in the annular space can be optimized, further improving the efficiency of the photocatalytic reaction. At the same time, it can also adapt to different flow and composition of waste gas, and enhance the flexibility and adaptability of the system.

[0042] In some embodiments, the composite adsorption material arranged on the inner cylinder is a mesoporous molecular sieve loaded with nano-titanium dioxide and amino-functionalized graphene.

[0043] Specifically, the mesoporous molecular sieve provides a large number of adsorption sites and can adsorb pollutants in the waste gas. Under light conditions, nano-titanium dioxide can generate photo-generated electrons and holes to decompose organic pollutants. The amino-functionalized graphene is chemically modified and the surface is rich in amino functional groups which can chemically adsorb pollutants. The mesoporous molecular sieve provides physical adsorption sites through its pore structure and can adsorb larger molecules of pollutants. Nano-titanium dioxide and amino-functionalized graphene further decompose and remove pollutants through chemical adsorption and photocatalysis.

[0044] The working process of the system: the flue gas first passes through the cyclone separator to remove large particles of dust, and then enters the dehumidifier to remove moisture.

[0045] The dehumidified flue gas enters the waste heat recovery unit and exchanges heat with the cooling medium in the heat exchange pipe 2 to recover heat.

[0046] The flue gas enters the inner cylinder of the collaborative reactor through the connecting cover 3 and is adsorbed by the composite adsorption material under the action of the spiral flow field.

[0047] The adsorbed flue gas enters the outer cylinder (photocatalytic zone) and is photocatalytically degraded under the action of the annular LED light source and the catalyst coating.

[0048] The treated flue gas enters the absorption tower to further absorb residual pollutants, and finally discharges wastewater through the sedimentation tank. The flue gas in the absorption tower contains components such as sulfuric acid and nitric acid. The lime milk spray liquid contacts the flue gas to undergo a neutralization reaction. The upper layer of clear liquid in the sedimentation tank is separated from the lower layer of gypsum, and the lower layer of gypsum is recycled and reused as a building material.

[0049] In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0050] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated thereby. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0053] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terms "comprising", "containing", "having" or "including" and their derivatives, mean "including but not limited to". The terms "coupled" and "connected", along with their derivatives, mean "directly or indirectly connected".

[0054] Although the embodiments of the present disclosure have been shown and described above, it should be understood by those having ordinary skill in the art that the above-mentioned embodiments are exemplary and should not be construed as limiting the present disclosure, and the changes, modifications, replacements, and variations made by those having ordinary skill in the art to the above-mentioned embodiments are within the protection scope of the present disclosure.

Claims

1. A photocatalytic and adsorption synergistic purification system, characterized in that, The application relates to a waste heat recovery device, which comprises the following parts: a pretreatment mechanism, which comprises a cyclone separator and a dehumidifier, the inlet of the dehumidifier being communicated with the outlet of the cyclone separator; a waste heat recovery unit, which comprises a box, heat exchange pipes and a connecting cylinder, the connecting cylinder being arranged at the top of the box, the top of the connecting cylinder being provided with an air outlet, at least part of the heat exchange pipes being located in the box, the bottom of the box being provided with an air inlet, a synergic reactor, which comprises a flow guide plate, an inner cylinder and an outer cylinder, the inner cylinder being communicated with the air outlet through the flow guide plate, the inner cylinder being arranged with composite adsorption material, a plurality of light sources being arranged along the circumference of the outer cylinder to irradiate the catalyst on the outer cylinder; an absorption tower, which is communicated with the outlet of the synergic reactor, the bottom of the absorption tower being communicated with a sedimentation tank; a control mechanism, which comprises a temperature sensor, a flow sensor, a laser gas analyzer and a controller, the laser gas analyzer being arranged at the outlet of the synergic reactor to detect the outlet pollutant concentration, the temperature sensor being arranged on the heat exchange pipe, and the controller being electrically connected with the waste heat recovery unit, the laser gas analyzer, the temperature sensor and the flow sensor. 2.The photocatalytic and adsorption synergistic purification system according to claim 1, characterized in that, The application further comprises a negative pressure mechanism, which comprises a fixing cover and an exhaust fan, the fixing cover being arranged on the box corresponding to the air inlet, and the exhaust fan being arranged in the fixing cover. 3.The photocatalytic and adsorption synergistic purification system according to claim 1, characterized in that, The application further comprises a filtering mechanism, which comprises a connecting cover and an activated carbon plate, the connecting cylinder being connected with the connecting cover, the activated carbon plate being arranged in the connecting cylinder, and the connecting cover being communicated with the flow guide plate at the end away from the connecting cylinder. 4.The photocatalytic and adsorption synergistic purification system according to claim 1, characterized in that, The flow guide plate is a spiral flow guide plate, which is communicated with the bottom of the inner cylinder. 5.The photocatalytic and adsorption synergic purification system according to claim 1, characterized in that, The application further comprises a compression structure arranged on the inner cylinder, which comprises a push rod and a pressing plate, the pressing plate being arranged on the inner side of the inner cylinder and abutting against the composite adsorption material, the telescopic end of the push rod being connected with the pressing plate, and the other end of the push rod being connected with the outer wall of the inner cylinder. 6.The photocatalytic and adsorption synergic purification system according to claim 1, characterized in that, The application further comprises a regeneration mechanism, which comprises an ultraviolet light generating device and a bypass valve, the ultraviolet light generating device being arranged in the inner cylinder, and the bypass valve being arranged on a first pipeline to deliver the flue gas of the inner cylinder to the outer cylinder. 7.The photocatalytic and adsorption synergic purification system according to claim 1, characterized in that, The inner cylinder and the outer cylinder share a central axis, and an annular space is formed between the inner cylinder and the outer cylinder. 8.The photocatalytic and adsorption synergic purification system according to claim 1, characterized in that, A variable frequency fan is arranged on the outer side of the outer cylinder to adjust the flue gas flow entering the outer cylinder. 9.The photocatalytic and adsorption synergic purification system according to claim 7, characterized in that, The application further comprises at least two moving plates, which are arranged in the annular space between the inner cylinder and the outer cylinder, and are movably connected with the inner cylinder to adjust the size of the annular space. 10.The photocatalytic and adsorption synergic purification system according to claim 1, characterized in that, The composite adsorption material arranged on the inner cylinder is mesoporous molecular sieve loaded with nano titanium dioxide and amino graphene.

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