CN107138007B - A super-gravity self-pressurizing and self-cleaning flue gas treatment device - Google Patents

Abstract

The invention discloses an ultra-gravity self-pressurizing and self-cleaning flue gas treatment device. The flue gas treatment device replaces a certain section of flue to perform oil fume treatment. The device utilizes the rotation of a turbo fan to form a stable and adjustable centrifugal force. Instead of the conventional gravity field, the oil fume absorption liquid is ejected from the liquid injection hole, accelerated, sheared and collided under the action of the supergravity field to form a uniform liquid mist, which fully contacts and absorbs the oil fume molecules in the flue gas. Gravity technology for solid-gas-liquid separation has relatively high separation efficiency. The self-supercharging principle of the turbo fan is used to solve the problem that the treated oil and fume may be difficult to discharge due to insufficient pressure. Self-cleaning means that through the small holes designed on the blades of the turbo fan, combined with the super-gravity device, violent collision with the washing liquid discharged into the device produces water mist, which naturally cleans the small molecules of oil smoke that may adhere inside the device and reduces the amount of oil inside the device. cleaning, reducing the labor of manpower.

Description

Flue gas treatment device of hypergravity self-pressurization self-cleaning

Technical Field

The invention is used in the field of oil fume purification equipment, and particularly relates to a novel oil fume purification treatment device.

Background

Along with the development of the third industry in China, the catering industry accounts for a greater and greater proportion in urban economy. In addition, because of the cooking habit in China, a large amount of oil smoke which is not properly processed is generated, the oil smoke contains a large amount of carcinogenic substances, the human health is seriously harmed, in addition, the pollution of the oil smoke to the air environment is also very serious, and the oil smoke pollution is one of the main pollution sources in the urban air pollution source at present. More seriously, the residual oil smoke in the smoke exhaust pipeline can bring fire hazard and other hidden troubles. The problems of air pollution, potential safety hazards and the like caused by cooking fume are paid more and more attention. At present, the oil fume purification technology in the catering industry mainly comprises an inertia separation method, a fabric filtration method, an electrostatic deposition method, a liquid washing method and the like, and various methods have certain defects and shortcomings, such as: the mechanical separation method has poor performance for removing gaseous pollutants, the fabric filtration method has many limitations on the use thereof due to the characteristics of the fabric filtration method, the electrostatic method cannot remove the gaseous pollutants, the liquid washing method is easy to generate secondary pollution, and the operation cost is high. Therefore, the invention provides a more efficient, economic and convenient oil fume treatment device, which is a problem to be solved urgently at present.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the prior art, the novel flue gas treatment device with the supergravity self-pressurization self-cleaning function is provided, the purification and separation treatment of flue gas in the flue gas pipeline in the catering industry is realized, and the self-cleaning effect is achieved.

The technical scheme is as follows: a supergravity self-pressurization self-cleaning flue gas treatment device comprises a shell provided with a flue gas inlet pipe and a flue gas outlet pipe, wherein a liquid discharge pipe is arranged at the bottom of the shell, a turbine fan is arranged in the shell, one end of the turbine fan is fixed on a rotating shaft through a center hole and is driven by a motor outside the shell, the flue gas inlet pipe is positioned at the air inlet side close to the turbine fan, the air outlet side of the flue gas outlet pipe close to the turbine fan is distributed in a wind channel of the turbine fan, a plurality of liquid spraying holes communicated with the center hole of the turbine fan are distributed in the wind channel of the turbine fan, the other end of the center hole of the turbine fan is connected with a liquid inlet pipe in a sealing manner, the liquid; the blades of the turbine fan are densely distributed with a plurality of micro through holes, and the aperture ratio is more than 55%.

Further, the absorption liquid is a mixed water solution of sodium hydroxide and fatty alcohol ether sodium sulfate, wherein the mass concentration of the sodium hydroxide is 1%, and the mass concentration of the fatty alcohol ether sodium sulfate is 1%.

Furthermore, a controller and a water replenishing pipe with a liquid inlet control valve are arranged on the water tank, a water level sensor is arranged in the water tank, and the controller is connected with the liquid inlet control valve and the water level sensor.

Furthermore, the liquid discharge pipe is communicated into the water tank, a water temperature sensor is further arranged in the water tank, a liquid discharge port with a liquid discharge control valve is arranged at the bottom of the water tank, the water temperature sensor, the liquid discharge control valve and the motor are all connected to the controller, and when the water temperature sensor detects that the temperature of the absorption liquid in the water tank is higher than a set value, the motor stops working.

Has the advantages that: the smoke treatment device of the invention replaces a certain section of flue to treat oil smoke, because the smoke treatment device is arranged at the original flue and is in a severe environment with high temperature and high oil, the device utilizes the rotation of a turbine fan to form a stable and adjustable centrifugal force field to replace a conventional gravity field, oil smoke absorption liquid is sprayed out from a liquid spraying hole, is accelerated, sheared and collided under the action of a supergravity field to form uniform liquid mist, is fully contacted with and absorbed by oil smoke molecules in the smoke, utilizes the supergravity technology to carry out solid-gas-liquid separation, and has higher separation efficiency. The self-pressurization principle of the turbine fan is utilized to solve the problem that the treated oil fume is difficult to discharge due to insufficient pressure. The self-cleaning is that the small holes designed on the blades of the turbine fan are combined with the supergravity device to generate violent collision with the cleaning solution discharged into the device to generate water mist, oil smoke micromolecules possibly adhered inside the device are naturally cleaned, the cleaning inside the device is reduced, and the labor of manpower is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection of the apparatus of the present invention to an existing flue gas duct.

Detailed Description

The invention is further explained below with reference to the drawings.

As shown in figure 1, the hypergravity self-pressurization self-cleaning flue gas treatment device comprises a cylindrical shell provided with a flue gas inlet pipe 4 and a flue gas outlet pipe 5, wherein a liquid discharge pipe 6 is arranged at the bottom of the shell, a turbine fan 2 is arranged in the shell, one end of the turbine fan 2, which passes through a central hole, is fixed on a rotating shaft 1 and is driven by a motor 16 arranged at the top of the outer side of the shell, and the joint of the turbine fan 2 and the rotating shaft 1 is sealed. In the embodiment, the blades of the turbofan 2 are made of stainless steel materials, the number of the blades is 8, micro through holes are uniformly and densely distributed on the blades, and the aperture ratio is more than 55%. The smoke inlet pipe 4 is located near the air inlet side of the turbo fan 2, and the exhaust pipe 5 is near the air outlet side of the turbo fan 2. A plurality of liquid spraying holes 3 communicated with a central hole of the turbine fan 2 are distributed in an air duct of the turbine fan 2, the other end of the central hole of the turbine fan 2 is hermetically connected with a liquid inlet pipe 7, the liquid inlet pipe 7 is connected with a water pump 14 positioned in a water tank 15, and absorption liquid is arranged in the water tank 15. The absorption liquid is a mixed aqueous solution of sodium hydroxide and fatty alcohol ether sodium sulfate, wherein the mass concentration of the sodium hydroxide is 1%, and the mass concentration of the fatty alcohol ether sodium sulfate is 1%.

The water tank 15 is provided with a controller 11 and a water replenishing pipe 10 with a liquid inlet control valve 9, a water level sensor 8 is arranged in the water tank 15, and the controller 11 is connected with the liquid inlet control valve 9 and the water level sensor 8. The liquid discharge pipe 6 is communicated with a water tank 15, a water temperature sensor 12 is further arranged in the water tank 15, a liquid discharge port with a liquid discharge control valve 13 is arranged at the bottom of the water tank 15, the water temperature sensor 12, the liquid discharge control valve 13 and the motor 16 are all connected to the controller 11, and when the water temperature sensor 12 detects that the temperature of absorption liquid in the water tank is higher than a set value, the motor 16 stops working.

The smoke inlet pipe 4 of the smoke treatment device is communicated with the catering cooking bench through a flue, and the exhaust pipe 5 is connected with the fan through the flue. In the device, the upper end of a rotating shaft 1 is connected with a motor 16, and the rotating shaft 1 can drive a hole type turbine fan 2 to rotate at a high speed. The water pump 14 sends the absorption liquid in the water tank 15 into the center hole of the turbine fan through the liquid inlet pipe 7, and the absorption liquid is sprayed out from the through hole of the side wall of the center hole of the turbine fan, communicated with the air duct, and sprayed out at a certain speed and adsorbed on the blade of the turbine fan. The turbine fan 2 rotates at a high speed, the absorption liquid adsorbed on the blades of the turbine fan obtains a very high speed under the action of centrifugal force, and liquid drops pass through and collide with micro through holes of the blades of the turbine fan and finally collide with the wall surface of the shell at a high speed to form superfine liquid mist. The oil smoke enters the device from the smoke inlet pipe 4 and then fully contacts with the liquid fog, the liquid fog absorbs grease particles and solid particles in the oil smoke and then settles to the bottom of the shell, the waste liquid can flow back to the water tank 15 through the liquid discharge pipe 6, and the purified oil smoke is discharged from the device through the exhaust pipe 5.

The turbine fan with the micro through holes on the blades is adopted, in the high-speed rotation process of the turbine fan, absorption liquid adsorbed on the surface of the turbine fan is accelerated step by step under the action of centrifugal force, and finally the absorption liquid collides with the wall surface of the cylindrical shell at a very high speed to form liquid mist to absorb oil smoke and achieve the effect of cleaning the interior of the device; meanwhile, the turbine fan blade with certain porosity can avoid the negative influence of overlarge pressure drop of the flue gas, and the effect of pressurization is achieved.

A water tank 15 is provided below the device, which tank serves mainly to store the absorption liquid and to recover the waste liquid for recycling purposes. A water temperature sensor 12 and a water level sensor 8 are arranged in the water tank. If the liquid temperature is too high, alarming is carried out and the device stops working; if the absorption liquid in the tank is insufficient, the controller 11 controls the liquid inlet control valve 9 to open, and the absorption liquid is automatically supplemented.

After a period of use, the wall surface of the casing and the surface of the turbine fan of the device inevitably have stains such as grease and the like attached. In order to further clean attached stains, the device is operated without introducing oil smoke temporarily, detergent with a specific proportion is added into water discharged into the device to form washing liquid, the wall surface and the turbine fan can be further cleaned through the washing liquid fog drops generated by the device, and the stains are settled to the bottom of the device and are discharged into a water tank. The washing liquid is a mixed water solution of sodium linear alkyl benzene sulfonate and fatty alcohol ether sodium sulfate, wherein the mass concentration of the sodium linear alkyl benzene sulfonate is 1%, and the mass concentration of the fatty alcohol ether sodium sulfate is 1%.

After the device is used for a certain time, the absorption performance of the device is reduced after the absorption liquid absorbs enough oil stains and smoke particles, at the moment, the liquid needs to be discharged through the liquid discharge control valve 13 and replaced by new absorption liquid, so that the absorption performance of the device on oil smoke keeps high efficiency.

The fume treatment device of the invention utilizes the characteristics of stable operation, convenient operation, small equipment volume, small gas phase pressure drop, large gas-liquid contact surface, low manufacturing cost, self-cleaning and the like of the supergravity equipment to overcome the defects of large equipment, high cost and the like in the existing fume purification technology at home and abroad, and the fume purification rate reaches more than 90 percent, thus being a universal fume purification device with high purification efficiency, low equipment cost and various catering industries.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (4)

1. a self-pressurizing and self-cleaning flue gas treatment device of supergravity, is characterized in that: comprise the casing that is provided with the smoke inlet pipe (4) and the exhaust pipe (5), and the bottom of the casing is provided with the drain pipe ( 6), a multi-hole turbo fan (2) is provided in the casing, the turbo fan (2) is fixed on the rotating shaft (1) through one end of the central hole, and is driven by a motor (16) outside the casing, the The smoke inlet pipe (4) is located near the air inlet side of the turbo fan (2), the exhaust pipe (5) is near the air outlet side of the turbo fan (2), and a plurality of air ducts are distributed in the air duct of the turbo fan (2). The liquid injection hole (3) communicates with the central hole of the turbo fan (2), the other end of the central hole of the turbo fan (2) is sealedly connected with the liquid inlet pipe (7), and the liquid inlet pipe (7) is connected to the water tank ( The water pump (14) in 15), the water tank (15) is provided with an absorption liquid; the blades of the turbo fan (2) are densely covered with a number of micro-through holes, and the porosity is above 55%; the absorption liquid It is sent into the center hole of the turbo fan (2) through the liquid inlet pipe (7), and is sprayed from the liquid injection hole (3) of the connecting air passage on the side wall of the center hole of the turbo fan (2), and is sprayed at a certain speed and adsorbed on the On the blades of the turbofan (2); the turbofan (2) rotates at a high speed, and the absorbing liquid adsorbed on the blades obtains a very high speed under the action of centrifugal force, and the droplets travel through and collide in the micro through-holes of the turbofan blades, and the Finally, it collides with the wall of the casing at a high speed to form a very fine liquid mist. The oil fume enters the device through the smoke inlet pipe (4) and fully contacts the liquid mist. The liquid mist absorbs the grease particles and solid particles in the oil fume and settles to the bottom of the casing. Waste liquid Through the drain pipe (6) back to the water tank (15), the purified oil fume is discharged through the exhaust pipe (5); the drain pipe (6) is connected to the water tank (15), the water tank (15) is also provided with a water temperature sensor (12), the bottom of the water tank (15) is provided with a drain port with a drain control valve (13), the water temperature sensor (12), the drain control valve (13) The motor (16) is connected to the controller (11), and the motor (16) is stopped when the water temperature sensor (12) detects that the temperature of the absorbing liquid in the water tank is higher than the set value. 2. the supergravity self-pressurization self-cleaning flue gas treatment device according to claim 1, is characterized in that: described absorption liquid is the mixed aqueous solution of sodium hydroxide and fatty alcohol ether sodium sulfate, wherein the quality of sodium hydroxide The concentration is 1%, and the mass concentration of fatty alcohol ether sodium sulfate is 1%. 3. The supergravity self-pressurizing and self-cleaning flue gas treatment device according to claim 1 or 2, wherein the water tank (15) is provided with a controller (11) and a liquid inlet control valve (9). ), the water tank (15) is provided with a water level sensor (8), and the controller (11) is connected to the liquid inlet control valve (9) and the water level sensor (8). 4. The supergravity self-pressurizing and self-cleaning flue gas treatment device according to claim 1, characterized in that: further comprising a washing liquid added to the water tank (15), and the washing liquid is a straight-chain alkyl group The mixed aqueous solution of sodium benzene sulfonate and sodium aliphatic alcohol ether sulfate, wherein the mass concentration of sodium straight-chain alkyl benzene sulfonate is 1%, and the mass concentration of sodium aliphatic alcohol ether sulfate is 1%.

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