27results about How to "Improve defogging efficiency" patented technology

The invention discloses an acid-making process using hydrogen sulfide waste gas and waste sulfuric acid, and relates to the technical field of acid-making processes, and the acid-making process specifically comprises the following steps: step 1, high-temperature reaction and gas generation, step 2, gas purification and conversion, a demister and a spraying assembly are used for removing dust, impurities and harmful substances in the gas; and step 3, sulfur trioxide absorption and sulfuric acid preparation. According to the acid-making process using the hydrogen sulfide waste gas and the waste sulfuric acid, the absorption slurry is sprayed out through the nozzle to be in countercurrent contact with the gas mixture, physical absorption and chemical reaction are combined, dust, impurities and other harmful substances in the gas mixture are effectively removed, and the gas purification efficiency is improved; the nozzles at the upper end and the lower end are used for spraying and cleaning the corrugated plate, it is ensured that the corrugated plate is always kept clean, system efficiency reduction caused by blockage or pollution of the corrugated plate is reduced, and the operation efficiency and stability of the whole system are improved.

The utility model relates to the technical field of activated carbon regeneration tail gas treatment, in particular to an activated carbon regeneration tail gas treatment incinerator which comprises an incinerator body, a waste gas conveying pipe is arranged on one side of the incinerator body, a communicating pipeline is arranged on one side of the waste gas conveying pipe, and a spray tower is arranged on one side of the communicating pipeline. A spraying assembly is arranged on one side of the spraying tower, and a slurry pond is arranged on the inner bottom surface of the spraying tower; the tail gas treatment device has the beneficial effects that tail gas can be firstly treated by using the solid absorption layer, and then can be subjected to spraying treatment by using the spraying assembly on the spraying tower, so that a traditional filtering device can be replaced for filtering treatment, the treatment becomes convenient, the tail gas can be continuously purified and treated for many times, and the use cost can be saved as much as possible.

The utility model belongs to the technical field of industrial desulfurization, and particularly relates to a demisting assembly of a desulfurization tower, which comprises a desulfurization tower body, and further comprises a guide ring, a guide groove, a sliding column, a vibration ring, a demisting plate, a transmission rod and fan blades which are arranged on one side of the desulfurization tower body, the surface of the guide ring is further provided with a guide groove in sliding connection with the sliding column. According to the device, through work of the fan blades and the vibration ring, the purpose that the vibration ring is smoothly driven to float up and down when the fan blades rotate can be achieved; the demisting plates are arranged on the surfaces of the demisting plates, so that the water on the surfaces of the demisting plates can be smoothly vibrated when the demisting plates adsorbing the water float up and down, the demisting efficiency of the demisting plates can be ensured to be more stable when the mist passes through the demisting plates, and the contact time between the demisting plates in a rotating state and the mist can be prolonged; and the demisting efficiency can be further improved.

This utility model discloses an intelligent integrated drainage-demisting terminal for high-humidity exhaust gas, comprising a drainage-demisting box, and an air inlet and an air outlet respectively disposed on opposite sides of the box; two sets of demisting box bodies are symmetrically arranged inside the drainage-demisting box, one set of demisting box bodies is connected to the air inlet, and the other set of demisting box bodies is connected to the air outlet; several sets of baffles are rotatably installed inside the demisting box bodies; an adjustment mechanism is provided on the outside of the demisting box bodies; the bottom ends of the two sets of demisting box bodies are connected by a semi-circular connecting pipe, and the bottom end of the connecting pipe is connected to a drainage mechanism. This utility model belongs to the field of exhaust gas treatment technology, specifically referring to an intelligent integrated drainage-demisting terminal for high-humidity exhaust gas.

The utility model belongs to the technical field of waste treatment, and discloses a demisting device for an absorption tower, the demisting device comprises a demisting assembly I and a demisting assembly II, the demisting assembly I is coaxially mounted in an air inducing pipeline, a backflow cavity I is positioned between the side wall of a reaction cavity and the inner side wall of the absorption tower, the top end of the backflow cavity I is open, and the air inducing pipeline is communicated with the backflow cavity I; a second backflow cavity is formed between the outer side wall of the air inducing pipeline and the outer cavity wall of the top end of the reaction cavity, the second backflow cavity is communicated with the air inducing pipeline, a hydrophilic semi-permeable membrane is arranged at the communication position, and the side end of the second backflow cavity is communicated with the first backflow cavity; the bottom of the exhaust cavity communicates with an air inlet pipeline, and the lower end of the air inlet pipeline communicates with the air inducing pipeline and the first backflow cavity. The second demisting assembly is installed in the air inlet pipeline, and an exhaust port communicating with the outside is formed in the top of the exhaust cavity. According to the demisting device, the flowing path of liquid is changed, the situation that the liquid and gas are repeatedly mixed to generate mist again can be reduced, secondary demisting is conducted through the second demisting assembly, and the demisting effect is improved.

This utility model relates to the field of waste gas treatment technology and discloses a spray tower demister, including a tower body. An air inlet pipe and a spray pipe are provided on the outer wall of the tower body, and an air outlet pipe is provided on the top of the tower body. A rotating mechanism is rotatably connected to the inner wall of the tower body. A lifting component is provided on the upper side of the moving component, and a base plate is fixedly provided at the output end of the lifting component. An ultrasonic cleaning device is provided on the lower side of the moving component. Multiple wire mesh demister modules are evenly arranged inside the wire mesh demister support, and an intelligent water cannon is installed inside the tower body. This utility model, through the air inlet pipe, spray pipe, air outlet pipe, tower body, rotating mechanism, moving component, wire mesh demister modules, wire mesh demister support, lifting component, ultrasonic cleaning device, intelligent water cannon, and base plate, solves the problem that the dense structure of the wire mesh easily forms cleaning dead corners, and high-pressure water washing cannot thoroughly remove stubborn dirt, resulting in low cleaning efficiency.

The efficient and uniform demisting device suitable for the stage lamp and the stage lamp provided with the efficient and uniform demisting device are provided, the demisting device comprises the draught fan and the air guiding device, the draught fan generates air flow and guides the air flow to a lens of the stage lamp through the air guiding device, and an air inlet of the draught fan is far away from the lens. The demisting device is arranged in the lamp holder, hot air in the lamp holder can be extracted and blown to the lens, the lens is heated, and therefore demisting is fast and good, the structural arrangement is simple and easy to implement, the demisting efficiency and the demisting effect are improved, and the demisting device is more economical and environmentally friendly; secondly, the air guide device is arranged between the air outlet of the fan and the lens, an outlet air duct of the air guide device is divided into a plurality of shunting air nozzles through a plurality of flow deflectors, and airflow is directionally guided to different areas of the lens through the shunting air nozzles in different directions, so that the airflow is prevented from being concentrated in an edge area or a middle area of the lens; the uniformity of the overall airflow coverage of the lens is improved, and an excellent demisting effect is further provided.

The utility model discloses an efficient methanol washing demisting device. The efficient methanol washing demisting device is provided with an inlet assembly, a U-shaped absorption tower disc, a folded plate demister and a coalescence demisting module from bottom to top, methanol synthesis gas uniformly rises along the section of the tower after being uniformly distributed by the fin distributor of the inlet assembly; methanol in the methanol synthesis gas is gradually transferred into the absorption liquid from bottom to top through a U-shaped absorption tower tray by utilizing the characteristic that water and methanol are infinitely mutually soluble and through sufficient gas-liquid mixing, so that an absorption liquid concentration gradient which is gradually increased from top to bottom is formed; the gas-liquid mass transfer effect is good under the same concentration gradient, the absorption efficiency is high, a methanol solution with the concentration being 60% or above is finally obtained at the tower bottom, after the washed methanol synthesis gas is subjected to double demisting through the folded plate demister and the coalescence demisting membrane block, entrainment in the methanol synthesis gas is effectively removed, and the methanol content in circulating gas is reduced.

The application discloses a kind of thermal power plant desulfurization and denitrification equipment, it is related to thermal power plant flue gas treatment technical field, including absorption tower, the top of the absorption tower is provided with first separation mechanism and second separation mechanism, the top of the second separation mechanism is further provided with composite demister;The first separation mechanism includes the mouthpiece of erection in the upper portion of the absorption tower, the top of the mouthpiece is provided with first spiral flue, the first spiral flue is provided with first demister outside sleeve joint installation;The second separation mechanism includes the second spiral flue of erection in the upper portion of the first spiral flue, the second spiral flue is provided with second demister outside sleeve joint installation, the composite demister is distributed in the first demister and the top of the second demister.The thermal power plant desulfurization and denitrification equipment disclosed in the application has the effect of high purification efficiency, high stability.

The invention relates to the field of vehicle accessories, in particular to a vehicle rearview mirror demisting method, device and equipment and a storage medium. The front face of the rearview mirror shell is provided with a window, a demisting area is formed between the window and the lens, an air outlet is formed between the lens and the shell, a power unit is arranged in the rearview mirror shell, airflow generated by the power unit is output to the demisting area through the air outlet, the back face of the shell is provided with an air inlet, and the air inlet is communicated with the demisting area. The air inlet is provided with a switch unit, the switch unit is used for controlling opening and closing of the air inlet, the air inlet is communicated to the demisting area through the air outlet, and the method comprises the steps that the speed of the vehicle is detected, and the rearview mirror demisting mode of the vehicle is determined based on the speed of the vehicle; and respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror demisting mode.

The utility model discloses a fog dispersal cooling tower, which belongs to the field of cooling towers and comprises a tower body, a spraying component is arranged on the tower body, an air inlet is arranged at the position of the tower body close to the bottom, an induced draft fan is arranged at the top of the tower body, and a mounting frame is arranged at the position of the inside of the tower body close to the top of the tower body. A first fog dispersal assembly and a second fog dispersal assembly are detachably mounted on the mounting frame through mounting ports, the mounting ports are distributed on the mounting frame in the height direction of the tower body at equal intervals, and the first fog dispersal assembly and the second fog dispersal assembly are distributed in a staggered mode through the mounting ports. According to the fog dispersal cooling tower, by adjusting the number of the first fog dispersal assemblies and the number of the second fog dispersal assemblies, the bending area of the baffle plate on the fog dispersal device can be changed, so that the bending area is properly increased under the condition that the gas flow is increased, the contact area between the gas flow and the baffle plate is increased, and the fog dispersal efficiency is improved.

The utility model belongs to the technical field of separation devices, and particularly relates to a chlorine demister which comprises a shell, a plurality of groups of tower plates are arranged in the shell, a plurality of groups of corrugated plate assemblies are arranged on the tower plates in a penetrating manner, each corrugated plate assembly comprises a front corrugated plate and a rear corrugated plate, and each front corrugated plate comprises a first upper folded plate and a second upper folded plate; the rear corrugated plate comprises an upper folded plate II, the bottom end of the upper folded plate II is sequentially connected with a middle folded plate I and a lower folded plate I, the rear corrugated plate comprises an upper folded plate II, the bottom end of the upper folded plate II is sequentially connected with a middle folded plate II and a lower folded plate II, and the upper folded plate II, the middle folded plate II and the lower folded plate II are matched with the upper folded plate I, the middle folded plate I and the lower folded plate I respectively; a connecting plate is arranged between the front corrugated plate and the rear corrugated plate, the distance between the upper folded plate I and the upper folded plate II is smaller than the distance between the lower folded plate I and the lower folded plate II, and by means of the device, the separation efficiency of fog drops in chlorine can be improved, and the chlorine purification effect and quality in the chlor-alkali industrial production process are improved.

The present invention provides a flash desulfurization slurry waste heat recovery system and method, belonging to the technical field of boiler flue gas energy saving, including a desulfurization tower and a negative pressure flash evaporation device, wherein a slurry area and a spray area are arranged in the desulfurization tower, and the slurry area and the spray area are connected through a slurry circulation pipeline, and a flash spray layer and a flash slurry layer are arranged in the negative pressure flash evaporation device, and the flash spray layer and the flash slurry layer are connected through a slurry pipeline and a slurry return pipeline and a slurry circulation pipeline respectively, and a first slurry regulating valve is arranged on the slurry pipeline, and a second slurry regulating valve is arranged on the slurry circulation pipeline, and the second slurry regulating valve is located between the slurry pipeline and the connection point between the slurry return pipeline and the slurry circulation pipeline. The present invention can control the load of the waste heat recovery system by adjusting the liquid inlet amount of the negative pressure flash evaporation device, and at the same time, disturb the slurry in the negative pressure flash evaporation device to prevent the desulfurization slurry from depositing and scaling.

The present invention discloses a control method, device, controller and storage medium for preventing fogging of automobiles, wherein the control method comprises: obtaining the in-car temperature, the inside temperature of the windshield and the relative humidity in the car and determining the in-car dew point temperature; when the inside temperature of the windshield is lower than the in-car dew point temperature, determining the first defog wind speed of the vehicle-mounted air conditioner of the vehicle according to the in-car dew point temperature and the inside temperature of the windshield, and controlling the vehicle-mounted air conditioner to perform defog according to the first defog wind speed; obtaining the light intensity variation at the windshield and determining the second defog wind speed of the vehicle-mounted air conditioner according to the light intensity variation; controlling the vehicle-mounted air conditioner to perform defog according to the first defog wind speed and the second defog wind speed. The above method intervenes in the early stage when the inside of the windshield is prone to fogging and improves the defog efficiency, avoiding the influence on driving after obvious fogging and the safety hazards caused by long-term defog.

The utility model discloses a high-performance system door and window capable of automatically demisting, which comprises a window sleeve, a window assembly is arranged in an inner cavity of the window sleeve, the window assembly comprises a door and window frame, and the door and window frame is clamped on the inner wall of the window sleeve; a heating assembly is arranged outside the multi-layer glass; the outer clamping frame is clamped outside the door and window frame; the plurality of isolation assemblies are arranged between two adjacent layers of glass; one side of the opening groove is provided with a connecting assembly communicated with indoor air, one side of the door and window frame is provided with an air exhaust assembly used for exhausting air between the double-layer glass, and the outer wall of the door and window frame is provided with a battery assembly. Through the arrangement mode that the window assembly, the connecting assembly and the air exhaust assembly are matched with each other, the space between every two adjacent pieces of glass with poor sealing performance can be heated conveniently, moisture between every two adjacent pieces of glass with good sealing performance can be exhausted conveniently, the demisting efficiency is improved, and the using stability of doors and windows is improved.

A coke oven gas demisting and dedusting tower aims to solve the problems that coke oven gas treated in the prior art still contains part of coal ash, coal tar, benzene, naphthalene and other impurities which are easily precipitated and attached to pipeline walls, filler surfaces and valves of compressors, so that pipelines are blocked, fillers are bonded, the repair cycle of the compressors and other equipment is shortened, and the maintenance cost is low. The coke oven gas desulfurization tower comprises a tower body, a coke oven gas inlet, a fin type inlet distributor, a filler assembly, a circulating liquid spraying pipe and a steam flushing opening, a folded plate demister and a folded plate demister flushing port; according to the utility model, the demisting efficiency is improved, the separation efficiency is extremely high, the device is easy to clean, and the problems that impurities such as coal ash, coal tar, benzene, naphthalene and the like are easy to precipitate and attach to the pipeline wall, the filler surface and the valve of the compressor, so that the pipeline is blocked, the filler is adhered, the repair cycle of equipment such as the compressor is shortened, and the service life of the equipment is prolonged are solved. And the long-period safety of the equipment is influenced.

The invention discloses a demisting device and method for a hot continuous rolling production line, and belongs to the field of steel rolling. According to the technical scheme, the demisting device of the hot continuous rolling production line comprises a demisting box, a plurality of pumping and discharging fans are arranged in the demisting box, a suction inlet for forming mist is formed in the bottom of the demisting box in an open mode, a movable mist discharging fan is movably arranged below the suction inlet, the air pumping direction of the movable mist discharging fan is from bottom to top, and the air pumping direction of the movable mist discharging fan is from bottom to top. And the water is discharged into the demisting box. The suction inlet with the open bottom expands the mist adsorption range, the movable mist exhaust fan is matched with the bottom-up air draft direction, the mist generation source can be accurately aligned, mist diffusion is avoided, the suction and exhaust fan and the movable mist exhaust fan form an up-and-down linkage suction and exhaust structure, the flow guide effect on the mist concentration generation position is enhanced, the demisting efficiency is greatly improved, and the demisting effect is improved. And mist escape is reduced.

The utility model discloses demisting equipment for a high-voltage electrode boiler, and relates to the technical field of boiler smoke treatment. The mist exhaust device comprises a mist exhaust pipeline, wherein the mist exhaust pipeline is provided with an anti-reflux mechanism, a rotational flow mechanism and a cleaning mechanism; the anti-backflow mechanism comprises a first anti-backflow assembly and a second anti-backflow assembly, the first anti-backflow assembly comprises a connecting pipeline fixedly installed on the outer wall of the mist discharging pipeline, a cross-shaped supporting frame is fixedly installed on the inner wall of the connecting pipeline, and an adaptive cylinder is fixedly installed on the inner wall of the connecting pipeline; and a piston is mounted on the inner wall of the adaptive cylinder in a sliding manner. According to the utility model, the anti-backflow mechanism is arranged, so that the problems that the demisting effect is influenced, the working efficiency of the boiler is reduced, the air flow in the boiler system is unsmooth, even the backflow phenomenon occurs, the stable operation of the boiler is influenced, and even other faults are possibly caused are solved.

The utility model belongs to the technical field of plant construction, and particularly relates to a ventilation and dust removal device for plant construction, which comprises a ventilation box main body, a dust removal mechanism mounted on the ventilation box main body and three groups of partition plates fixed in the ventilation box main body, the three sets of partition plates are distributed on the two sides of the top end and the middle position of the bottom end in the ventilation box body correspondingly, demisting nets are arranged between the two sides of the partition plate at the bottom end in the ventilation box body and the two sets of partition plates at the top end correspondingly, and a cleaning assembly is installed on the ventilation box body. The cleaning assembly comprises a cleaning box fixed to one side of the ventilation box main body and a first electric push rod fixed to one side of the cleaning box, by arranging the cleaning assembly, dust and dirt on the demisting net can be removed through regular cleaning through the operation, so that the good working state of the ventilation box is kept, the demisting efficiency of the ventilation box is improved, and the practicability is high. The use effect of the device is improved, and actual use requirements are met.

The application discloses a sulfuric acid production filtering tower structure and relates to the technical field of sulfuric acid production filtering, which comprises a tower body, filtering units and a vibration and liquid discharge mechanism, the inner wall of the tower body is provided with an upper mounting layer and a lower mounting layer, a plurality of filtering units are arranged in a circumferential manner between the upper mounting layer and the lower mounting layer, the filtering units comprise support assemblies and fiber bed layers, the support assemblies and the fiber bed layers are all in the shape of an inverted cone cylinder with the upper part being larger and the lower part being smaller, the support assemblies comprise inner support cages and outer support cages, and the side of the inner support cage facing the fiber bed layer is provided with spiral flow guide ribs, the vibration and liquid discharge mechanism comprises a flow guide piece and a lever piece, the flow guide piece comprises a plurality of shuttle-shaped flow guide bodies with tapered tips at the upper and lower ends, and the lever piece comprises liquid receiving hoppers corresponding to the flow guide piece. The application has the advantages that the filtering units and the spiral flow guide ribs can balance the load distribution of the fiber bed layers, reduce the coverage of the lower liquid film and improve the overall trapping efficiency; meanwhile, the vibration and liquid discharge mechanism is driven by the gravity of the acid liquid to generate periodic short vibrations, so that the acid liquid can be smoothly discharged.

The utility model provides a deacidification recovery system of nitrogen for refrigerant R134a production, which belongs to the technical field of fluorination and comprises a fluorination water scrubber, a nitrogen recovery alkaline scrubber, a nitrogen buffer tank, a nitrogen compressor, a refrigerated dryer and a nitrogen storage tank which are sequentially connected along the nitrogen flow direction. A first demister is arranged between the fluorination water washing tower and the nitrogen recovery alkaline washing tower, and a liquid phase outlet in the bottom of the first demister is connected with a liquid return port of the fluorination water washing tower; a second demister is arranged between the nitrogen recovery alkaline washing tower and the nitrogen buffer tank, and a liquid phase outlet in the bottom of the second demister is connected with a liquid return port of the nitrogen recovery alkaline washing tower; an outlet of the nitrogen compressor is further connected with a gas return port of the nitrogen buffer tank, and a nitrogen recovery cooler is further arranged between the nitrogen compressor and the gas return port of the nitrogen buffer tank. According to the system, the waste nitrogen is subjected to deacidification treatment and recycling, and the purposes of saving energy, reducing emission and reducing the production cost are achieved.

The rearview mirror comprises a shell, the front face of the shell is provided with a window, and the back face of the shell is provided with an air inlet window; the lens is arranged in the shell, an air outlet is formed between the lens and the shell, and a demisting area is formed between the lens and the window; the air inlet window is communicated to the demisting area through the air outlet, so that external airflow can be output to the demisting area from the air outlet after being transmitted in the shell through the air inlet window, and the demisting efficiency of the rearview mirror is improved.

The utility model discloses a speed-increasing ridge type demister which comprises two ridge demisting sheet sets which are symmetrically arranged, each ridge demisting sheet set comprises a plurality of ventilation cavities which are evenly distributed in the front-back direction, a demisting cavity is formed between every two adjacent ventilation cavities, and the upper sides and the lower sides of the ventilation cavities and the demisting cavities are open. A plurality of first air inlet cavities are uniformly distributed at an opening in the lower side of the ventilation cavity, a first air inlet pipe is arranged in all the first air inlet cavities in a penetrating manner, and an upward nozzle is arranged on the first air inlet pipe in each first air inlet cavity; a plurality of second air inlet cavities are uniformly distributed at an opening in the lower side of the demisting cavity, a second air inlet pipe is arranged in all the second air inlet cavities in a penetrating manner, an upward nozzle is arranged on the second air inlet pipe in each second air inlet cavity, and the first air inlet pipe and the second air inlet pipes are respectively connected with an air source; air flow is accelerated through the nozzles, centrifugal force is increased when the air flow turns, separation of small liquid drops and air is facilitated, demisting efficiency is improved, and demisting effect is guaranteed.

The rearview mirror comprises a shell, the front face of the shell is provided with a window, and the back face of the shell is provided with an air inlet window; the lens is arranged in the shell, an air outlet is formed between the lens and the shell, and a demisting area is formed between the lens and the window; the switch unit is arranged on the air inlet window and used for controlling opening and closing of the air inlet window; under the condition that the switch unit controls the air inlet window to be in the open state, the air inlet window communicates with the back face of the shell and the demisting area through the air outlet, so that external airflow can be output to the demisting area from the air outlet after passing through the air inlet window, and the demisting efficiency of the rearview mirror is improved.

The utility model relates to a demister baffling structure, which belongs to the technical field of demisters and comprises a plurality of baffle plates positioned in a reaction tower, each baffle plate comprises a first stirring plate section, a second stirring plate section, a first straight plate section, a first folded plate section, a second straight plate section, a second folded plate section and a third straight plate section, and the first straight plate section, the first folded plate section, the second straight plate section, the second folded plate section and the third straight plate section are integrally connected. The first straight plate section, the second straight plate section and the third straight plate section are arranged in the airflow flowing direction. One end of the first stirring plate section is fixed at one end of the second folded plate section; and one end of the second stirring plate section is fixed at the other end of the second stirring plate section. According to the utility model, one end of the first stirring plate section arranged along the inclination direction of the second folded plate section is fixed at one end of the first straight plate section, and then one end of the second stirring plate section arranged parallel to the second straight plate section is fixed at the other end of the second stirring plate section; according to the demister, airflow in the airflow channel can be uniformly distributed, the airflow velocity gradient is slowed down, and the airflow pressure drop is reduced, so that the demisting efficiency and the demisting effect of the demister are improved.

The utility model provides a multi-curved-surface non-blind area automobile rearview mirror, which relates to the technical field of automobile industry design, and comprises a shell and a mirror surface fixedly connected on the shell, a transmission assembly is arranged on the shell, the transmission assembly comprises a first rotating shaft, and the first rotating shaft is fixedly connected with the first rotating shaft. The side, away from the motor, of the first rotating shaft is fixedly connected with a connecting block, the connecting block is rotationally connected with a second rotating shaft, the second rotating shaft is rotationally connected with an arc-shaped piece, and the side, away from the first rotating shaft, of the arc-shaped piece is fixedly connected with a curved mirror. The position and the angle of the curved mirror can be dynamically adjusted, so that the driving blind area is remarkably reduced, the optimized view field is beneficial to improving the driving safety, a driver can better observe the conditions behind and on the side faces of a vehicle, and particularly, potential collision and accidents can be more effectively prevented during lane changing and turning.

The invention discloses an efficient demister for removing SO3 acid mist, and relates to the technical field of gas purification equipment. The demister comprises a demister shell, wherein the demister shell comprises an electrostatic demister base, an electrostatic demister middle part, an electrostatic demister upper part and an electrostatic demister top part; in the invention, by utilizing the charge adsorption effect of the high-voltage electric field on the acid mist, the demisting efficiency can be obviously improved, the acid mist in the SO3 gas can be effectively removed, and the pollution to the environment and the corrosion risk to subsequent equipment are reduced; the anode tube and the cathode are both made of conductive PVDF materials, the cathode supporting piece is made of non-conductive PVDF materials, the electrostatic demister base, the electrostatic demister middle part, the electrostatic demister upper part and the electrostatic demister top are all made of PP materials, and all-around corrosion-resistant materials are selected, so that the demister can stably run for a long time in a severe SO3 acid mist environment; the service life of equipment is greatly prolonged, and the maintenance cost is reduced.