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CN-121971942-A - Electrostatic photolysis combined fume collecting hood purifying integrated equipment and fume purifying method

CN121971942ACN 121971942 ACN121971942 ACN 121971942ACN-121971942-A

Abstract

The invention relates to the field of oil fume purification, in particular to electrostatic photolysis combined fume collecting hood purification integrated equipment and an oil fume purification method. The device comprises a fume collecting hood shell and is sequentially integrated a centrifugal pretreatment unit in the air duct the device comprises an electrostatic purifying unit, a photolysis catalytic unit, a fan and an intelligent control system. The photolysis catalytic unit comprises a honeycomb ceramic substrate and a high-intensity ultraviolet lamp tube arranged around the honeycomb ceramic substrate, wherein the substrate is made of an ultraviolet light-transmitting material, so that ultraviolet light can be transmitted into a pore canal of the honeycomb ceramic substrate from the lateral direction, and a three-dimensional excitation is formed on a photocatalyst loaded on the wall of the pore canal, so that gaseous organic matters and peculiar smell are subjected to deep oxidative decomposition. The method comprises the steps of suction and centrifugal pretreatment, electrostatic fine treatment, photolysis catalysis advanced treatment, intelligent control of discharge and the like. The invention converts the glancing shallow reaction in the traditional structure into the penetrating deep reaction through the photolysis catalytic unit, so that the purification efficiency of gaseous organic matters and peculiar smell is greatly improved.

Inventors

  • CAO HUAPING

Assignees

  • 山东佰超世纪蓝天环保科技有限公司

Dates

Publication Date
20260505
Application Date
20260113

Claims (10)

  1. 1. The electrostatic photolysis combined fume collecting hood purifying integrated device is characterized by comprising a fume collecting hood shell (1) and a plurality of air channels which are sequentially integrated in the fume collecting hood shell (1) along the fume flow direction: The centrifugal pretreatment unit is used for carrying out gas-solid separation on the sucked oil fume and collecting large-particle oil drops; the electrostatic purifying unit is used for carrying out charge and adsorption on fine oil mist particles in the pretreated airflow; the photolysis catalysis unit is used for carrying out oxidative decomposition on gaseous organic matters and peculiar smell molecules in the airflow; The fan is used for providing airflow power; An intelligent control system; The photocatalytic unit comprises a honeycomb ceramic substrate (3), wherein a photocatalyst is loaded on the pore canal wall of the honeycomb ceramic substrate (3), a high-strength ultraviolet lamp tube (2) is arranged around the honeycomb ceramic substrate (3), the honeycomb ceramic substrate (3) is made of a material with ultraviolet transmittance of more than or equal to 60%, ultraviolet light emitted by the high-strength ultraviolet lamp tube (2) can be transmitted into the pore canal of the honeycomb ceramic substrate (3) from the lateral direction, so that the photocatalyst loaded on the pore canal wall is excited in a three-dimensional mode, and the photocatalytic unit is used for carrying out deep oxidative decomposition on gaseous organic matters and peculiar smell molecules in an air flow after electrostatic purification.
  2. 2. The electrostatic photolysis composite smoke collecting hood purifying integrated device according to claim 1 is characterized in that the honeycomb ceramic substrate (3) is cordierite honeycomb ceramic, the honeycomb ceramic substrate (3) is made of a material with ultraviolet light transmittance of more than or equal to 60% at 254nm wavelength, the wall thickness of the honeycomb ceramic substrate is 0.1-0.3mm, the high-strength ultraviolet lamp tube (2) is sleeved with a sleeve, and the sleeve is made of quartz glass material transmitting ultraviolet light.
  3. 3. The electrostatic photolysis composite smoke collecting hood purifying integrated device according to claim 1, wherein the photocatalyst is nano titanium dioxide loaded on the surface of a pore canal of the honeycomb ceramic substrate (3).
  4. 4. An electrostatic photolysis composite fume collecting hood purification integrated device as in claim 1, wherein the centrifugal pretreatment unit comprises a centrifugal impeller driven by a motor, the fume collecting hood housing (1) is provided with an oil collecting groove which is arranged around the radial periphery of the centrifugal impeller, the centrifugal impeller is mutually matched with the oil collecting groove, the blades of the centrifugal impeller are coated with an oleophobic coating, the oil collecting groove is integrally formed with the bottom of the fume collecting hood housing (1) and is connected with a flow guide pipe, and the centrifugal impeller is configured to generate centrifugal force on inhaled fume when rotating and throw large-particle oil drops to the oil collecting groove.
  5. 5. The electrostatic photolysis composite smoke collecting hood purifying integrated device of claim 1, wherein the electrostatic purifying unit comprises a wide-interval flat plate electrode group and a high-voltage power supply module, the wide-interval flat plate electrode group is arranged in a multi-stage array along the airflow direction, the wide-interval flat plate electrode group comprises a plurality of alternately arranged discharge electrodes and dust collecting electrodes, the discharge electrodes are made of corrosion-resistant titanium alloy materials, the surfaces of the dust collecting electrodes are coated with anti-sticking oil coatings, the high-voltage power supply module is used for supplying power to the flat plate electrode group, and the high-voltage power supply module adopts a high-frequency constant-current power supply so as to realize stable corona discharge and inhibit sparks.
  6. 6. An electrostatic photolysis composite fume collection hood cleaning integrated device in accordance with claim 1, wherein the intelligent control system comprises a controller (4) and is respectively in signal connection with the controller (4): the oil smoke concentration sensor is provided with two groups which are respectively arranged at the inlet and the outlet of the fume collecting hood shell (1); the ultraviolet lamp intensity sensor is arranged in the photolysis catalytic unit and is positioned in the central area of the ultraviolet lamp tube array; The temperature sensors are provided with three groups of air channels which are respectively arranged at the inlet of the fume collecting hood shell (1), on the collector frame of the electrostatic purifying unit and between the photolysis catalytic unit and the fan; The controller (4) is configured to dynamically adjust the rotating speed of the fan, the output voltage of the high-voltage power supply module of the electrostatic purifying unit, and the running power and the on-off state of the high-intensity ultraviolet lamp tube of the photolysis catalytic unit in real time based on the difference signals of the oil smoke concentration sensors at the inlet and the outlet.
  7. 7. An electrostatic photolysis composite fume collection hood cleaning integrated device according to claim 1 characterized in that the fume collection hood housing (1) is provided with access doors which can be opened and closed rapidly at positions corresponding to the electrostatic cleaning unit and the photolysis catalytic unit, respectively, and the access doors facilitate cleaning, maintenance or component replacement of the corresponding units.
  8. 8. A fume purifying method of an electrostatic photolysis composite fume collecting hood purifying integrated apparatus for use in any one of claims 1 to 7, comprising the steps of: S1, sucking and preprocessing, namely starting the fan, sucking the oil fume into a fume collecting hood shell (1), separating and collecting more than 90% of large-particle oil drops with the particle size of more than 10 mu m under the action of centrifugal force through the centrifugal preprocessing unit, and reducing the processing load of a follow-up unit; S2, electrostatic fine treatment, namely enabling the air flow pretreated in the S1 to enter an electrostatic purifying unit, wherein fine oil mist particles are charged and adsorbed and removed; S3, deep photocatalytic treatment, namely enabling the airflow subjected to electrostatic treatment in the S2 to enter a photocatalytic unit, enabling the airflow to pass through the pore canal of the honeycomb ceramic substrate (3), and simultaneously enabling ultraviolet light emitted by the high-intensity ultraviolet lamp tube (2) which is arranged in a surrounding manner to be transmitted and irradiated from the lateral direction, exciting a photocatalyst on the pore canal wall, and carrying out catalytic oxidative decomposition on gaseous organic matters and peculiar smell molecules in the airflow; And S4, cleaning emission and intelligent control, wherein the air flow purified in the step S3 is discharged by the fan, and the intelligent control system dynamically adjusts the rotating speed of the fan, the voltage of the electrostatic purifying unit and the ultraviolet lamp tube power of the photolysis catalytic unit in real time based on the oil smoke concentration difference signals of the inlet and the outlet in the whole process of the steps S1 to S3.
  9. 9. The method for purifying the oil fume of the electrostatic photolysis composite fume collecting hood purification integrated device according to claim 8, wherein in the step S3, the power and the opening and closing quantity of the high-intensity ultraviolet lamp tube (2) are adjusted to enable the ultraviolet light intensity emitted by the high-intensity ultraviolet lamp tube to be matched with the light transmission characteristic of the honeycomb ceramic substrate (3), so that the ultraviolet light can be ensured to be effectively transmitted into the deep part of the pore canal, and the three-dimensional excitation of the catalyst in the whole pore canal is realized.
  10. 10. The method for purifying fume of an electrostatic photolysis composite fume collecting hood integrated device as claimed in claim 8, wherein in the intelligent control of step S4, the method further comprises the following sub-steps: s4.1, safety monitoring, namely performing overtemperature alarm or equipment protective frequency reduction/shutdown operation according to temperature sensor signals arranged at the inlet of the fume collecting hood shell (1), the electrostatic purifying unit and the outlet of the photolysis catalytic unit; And S4.2, maintenance early warning, namely sending an early warning signal for maintaining or replacing the high-intensity ultraviolet lamp tube (2) when the ultraviolet intensity is detected to be attenuated to a preset threshold value according to the signal of the ultraviolet lamp intensity sensor.

Description

Electrostatic photolysis combined fume collecting hood purifying integrated equipment and fume purifying method Technical Field The invention relates to the field of oil fume purification, in particular to electrostatic photolysis combined fume collecting hood purification integrated equipment and an oil fume purification method. Background With the rapid development of the catering industry, kitchen oil fume pollution has become one of the important problems affecting the quality of the atmospheric environment and the quality of life of residents. The pollutants such as particulate matters, gaseous organic matters and the like contained in the oil fume not only can cause atmospheric pollution, but also can be accumulated indoors easily to harm the health of human bodies, so that the efficient purification treatment of the catering oil fume has become an important requirement for environmental protection and treatment. In traditional oil fume purifying equipment, the ultraviolet lamp tubes and the catalyst substrate are arranged in parallel, so that air flow only passes through the surface of the catalyst plate, the gas-solid contact time is extremely short, and most pollutants are taken away without reaction. Disclosure of Invention The invention aims to provide electrostatic photolysis combined fume collecting hood purifying integrated equipment and a fume purifying method, so as to solve the problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an integrative equipment of electrostatic photolysis combined type collection petticoat pipe purification, includes collection petticoat pipe casing, and along the oil smoke air current direction integrated setting in proper order in the inside wind channel of collection petticoat pipe casing: The centrifugal pretreatment unit is used for carrying out gas-solid separation on the sucked oil fume and collecting large-particle oil drops; the electrostatic purifying unit is used for carrying out charge and adsorption on fine oil mist particles in the pretreated airflow; the photolysis catalysis unit is used for carrying out oxidative decomposition on gaseous organic matters and peculiar smell molecules in the airflow; The fan is used for providing airflow power; An intelligent control system; The photocatalytic unit comprises a honeycomb ceramic substrate, wherein a photocatalyst is loaded on the pore canal wall of the honeycomb ceramic substrate, a high-strength ultraviolet lamp tube is arranged around the honeycomb ceramic substrate, the honeycomb ceramic substrate is made of a material with ultraviolet transmittance more than or equal to 60%, ultraviolet light emitted by the high-strength ultraviolet lamp tube can be transmitted into the pore canal of the honeycomb ceramic substrate from side to form three-dimensional excitation on the photocatalyst loaded on the pore canal wall, and the photocatalytic unit is used for carrying out deep oxidative decomposition on gaseous organic matters and peculiar smell molecules in airflow after electrostatic purification. Preferably, the honeycomb ceramic substrate is cordierite honeycomb ceramic, the honeycomb ceramic substrate is made of a material with ultraviolet light transmittance of more than or equal to 60% at 254nm wavelength, the wall thickness of the honeycomb ceramic substrate is 0.1-0.3mm, the high-strength ultraviolet lamp tube is sleeved with a sleeve, and the sleeve is made of quartz glass material transmitting ultraviolet light. Preferably, the photocatalyst is nano titanium dioxide loaded on the pore channel surface of the honeycomb ceramic substrate. Preferably, the centrifugal pretreatment unit comprises a centrifugal impeller, the centrifugal impeller is driven by a motor, the fume collecting hood shell is provided with an oil collecting groove, the oil collecting groove is arranged around the radial periphery of the centrifugal impeller, the centrifugal impeller is mutually matched with the oil collecting groove, blades of the centrifugal impeller are coated with an oleophobic coating, the oil collecting groove and the bottom of the fume collecting hood shell are integrally formed and connected with a flow guide pipe, and the centrifugal impeller is configured to generate centrifugal force on inhaled fume when rotating, so that large-particle oil drops are thrown to the oil collecting groove. Preferably, the electrostatic purifying unit comprises a wide-spacing flat electrode group and a high-voltage power supply module, wherein the wide-spacing flat electrode group is arranged in a multi-stage array along the airflow direction, the wide-spacing flat electrode group comprises a plurality of alternately arranged discharge electrodes and dust collecting electrodes, the discharge electrodes are made of corrosion-resistant titanium alloy materials, the surfaces of the dust collecting electrodes