CN103252294A - Tri-combined type efficient lampblack purifying device and secondary cyclone separator with same - Google Patents

Abstract

The invention discloses a triple composite high-efficiency oil fume purification device and a secondary cyclone separator adopted therefor. Two-stage cyclone separator, the inlet pipe is set on the outer cone shell, the oil outlet pipe is set at the bottom of the outer cone shell, and the upper cover is set on the outer cone shell; the inner cone shell is set inside the outer cone shell; the bottom of the inner cone shell A circulation pipe is provided; a tangential vane is provided above the inner conical shell; the outlet pipe passes through the axis of the tangential vane and passes through the upper cover. Triple compound high-efficiency oil fume purification device, the fume hood is connected to the first-stage cyclone separator; the upper end of the first-stage cyclone separator is connected to the inlet pipe of the second-stage cyclone separator, and the lower end is connected to the oil collection tank; the circulation pipe of the second-stage cyclone separator is connected to the The inlet pipe is connected, the oil outlet pipe is connected to the oil collection tank, and the outlet pipe is connected to the low-temperature plasma oil fume purification device, the photodecomposition device for removing the peculiar smell in the oil fume and the tractor in turn. The invention has high treatment efficiency, safe and reliable operation, compact structure and can meet the requirement of low-altitude and no-odor emission.

Description

A triple compound high-efficiency oil fume purification device and the secondary cyclone separator it adopts

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technical field

The invention relates to an oil fume purification device, in particular to a triple compound high-efficiency oil fume purification device and a secondary cyclone separator adopted therefor.

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Background technique

With the continuous development of my country's economy, the tertiary industry is booming, and there are more and more restaurants, but the oil fume produced by food cooking is also becoming more and more harmful to human health and the environment. In the "Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution", it is stipulated that "operators of the urban catering service industry must take measures to prevent oil fume from polluting the living environment of nearby residents." At present, the common treatment methods for oil fume at home and abroad are roughly divided For: mechanical method, electrostatic method, wet method, composite method and other four categories. However, these treatment methods and corresponding devices for oil fume cannot effectively solve the problem of peculiar smell in the exhaust gas after the oil fume is captured, and after a period of installation and operation, the ability to remove oil fume will drop significantly, and even the concentration of oil fume at the inlet of the purification device is lower than The phenomenon of export concentration. Therefore, the development of an oil fume purification device with high processing efficiency, safe and reliable operation, compact structure, and meeting the requirements of low-altitude and no-odor emission has become a hot spot in market demand. Therefore, how to design an efficient oil fume purification device is the key to the transformation of oil fume purification. where.

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Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a triple compound high-efficiency oil fume purification device and a secondary cyclone separator adopted therefor.

Secondary cyclone separator of the present invention has adopted following technical scheme:

A secondary cyclone separator comprising an outer conical shell, an inner conical shell, an inlet pipe and an outlet pipe;

The inlet pipe is set on the outer conical shell, the bottom of the outer conical shell is provided with an oil outlet pipe, and the upper part of the outer conical shell is provided with an upper cover;

The inner conical shell is set inside the outer conical shell; the bottom of the inner conical shell is provided with a circulation pipe, and the circulation pipe passes through the outer conical shell; the upper part of the inner conical shell is provided with tangential blades matching its size; the outlet pipe is from the tangential The shaft center of the blade passes through, one end of which is opened on the upper part of the inner cavity of the inner conical shell, and the other end passes through the upper cover of the outer conical shell.

Further, the inlet pipe and the outlet pipe are respectively provided with adjusting baffles, which is conducive to the formation of circulating airflow.

Furthermore, one end of the outlet pipe opening to the inner conical shell is wide-mouthed, which facilitates the flow of air into the outlet pipe.

The triple composite high-efficiency oil fume purification device of the present invention adopts the following technical scheme:

Triple compound high-efficiency oil fume purification device, including fume hood, primary cyclone separator, oil collection tank, low-temperature plasma oil fume purification device, photodecomposition device for removing odor from oil fume, tractor and the above-mentioned secondary cyclone separator;

The fume hood is connected to the first-stage cyclone separator through a pipe; the upper end of the first-stage cyclone separator is connected to the inlet pipe of the second-stage cyclone separator through a pipe, and the lower end is connected to the oil collection tank through a pipe;

The circulation pipe of the secondary cyclone separator is connected to the inlet pipe through the pipe, the oil outlet pipe is connected to the oil collection tank through the pipe, and the outlet pipe is connected to the low-temperature plasma oil fume purification device, the photodecomposition device for removing the peculiar smell in the oil fume and the traction machine in turn through the pipe.

The beneficial effects that the present invention has are:

(1) The oil fume purification device of the present invention is based on the eddy current and cyclone interference method oil fume pre-separation treatment technology, low-temperature plasma oil fume purification technology and photolysis ozone odor removal technology, which can effectively remove PME (liquid and solid particles) and VOCs (volatile organic compounds), and has the characteristics of high purification rate, small resistance, durability and long-term effectiveness;

(2) The oil fume purification device of the present invention has a self-designed oil fume filtration and separation pretreatment system, which adopts two-stage filtration and separation. After filtration and separation, the aerosol particles with smaller particle sizes in the oil fume are separated, thereby improving the purification of oil fume efficiency;

(3) The oil fume purification device of the present invention adopts the atomized corona discharge plasma purification method, which avoids the difficulty of high-voltage insulation in the water supply system, and forms an atomized corona discharge on the discharge electrode through the electrohydrodynamic atomization mechanism, and uses A small amount of water can keep the discharge electrode and dust collector plate clean at any time, achieving long-term and efficient oil fume purification;

(4) The oil fume purification device of the present invention adopts the method of photolysis of ozone to remove the peculiar smell in the oil fume, so that the oil fume in the catering industry can be discharged at low altitude without peculiar smell.

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Description of drawings

Figure 1 is a schematic diagram of the process of a triple compound high-efficiency oil fume purification device;

Fig. 2 is the structural representation of secondary cyclone separator;

Labels in the figure: 1-stove, 2-fume hood, 3-first-stage cyclone separator, 4-top cover, 5-secondary cyclone separator, 6-oil collection tank, 7-low temperature plasma oil fume purification device, 8- Photodecomposition device for removing peculiar smell in oil fume, 9-tractor, 10-inlet pipe, 11-inlet adjustment baffle, 12-outer cone shell, 13-tangential blade, 14-circulation pipe, 15-oil outlet pipe, 16- Inner cone shell, 17-exit pipe, 18-exit adjustment baffle, 19-inner cavity.

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Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1 and Figure 2, the triple composite high-efficiency oil fume purification device includes a fume hood 2, a first-stage cyclone separator 3, an oil collection tank 6, a low-temperature plasma oil fume purification device 7, and a photodecomposition device for removing odor from oil fume 8, Tractor 9 and secondary cyclone separator 5;

Wherein, the secondary cyclone separator comprises an outer cone shell 12, an inner cone shell 16, an inlet pipe 10 and an outlet pipe 17; the inlet pipe 10 is arranged on the outer cone shell 12, and the bottom of the outer cone shell 12 is provided with an oil outlet pipe 15. The upper part of the outer cone shell 12 is provided with an upper cover 4; the inner cone shell 16 is set inside the outer cone shell 12; the bottom of the inner cone shell 16 is provided with a circulation pipe 14, and the circulation pipe 14 passes through the outer cone shell ; The top of the inner conical shell 16 is provided with a tangential blade 13 that matches its size; the outlet pipe 17 passes through the axis of the tangential blade, and one end is opened on the inner chamber 19 top of the inner conical shell 16, and the other end passes through Over the upper cover 4 of the outer conical shell 12; the inlet pipe 10 and the outlet pipe 17 are respectively provided with an inlet pipe adjustment baffle 11 and an outlet adjustment baffle 18; the outlet pipe 17 is opened at one end of the inner conical shell 16 wide mouth;

The fume hood 2 is connected to the primary cyclone separator 3 through a pipeline; the upper end of the primary cyclone separator 3 is connected to the inlet pipe 10 of the secondary cyclone separator 5 through a pipeline, and the lower end is connected to the oil collection tank 6 through a pipeline;

The circulation pipe 14 of the secondary cyclone separator 5 is connected to the inlet pipe 10 through pipes, the oil outlet pipe 15 is connected to the oil collection tank 6 through pipes, and the outlet pipe 17 is connected to the low-temperature plasma oil fume purification device 7 and the light decomposition device for removing peculiar smell in oil fume through pipes in turn. 8 and tractor 9.

Working process of the present invention is as follows:

The oil fume generated in the stove 1 enters the pipeline through the fume hood 2, and then the oil fume enters the first-stage cyclone separator 3 along the tangential direction, and rotates inside the separator to separate part of the oil droplets, and the separated oil droplets enter the collection through the pipeline. In tank 6.

The oil fume filtered by the primary cyclone separator 3 enters the outer conical shell 12 through the inlet pipe 10, and flows upward along the gap between the outer conical shell 12 and the inner conical shell 16, and a part of the oil droplets will be separated due to gravity come out, and flow into the oil collector 6 through the oil outlet pipe 15; after reaching the top of the separator, the oil fume flows into the inner cavity 19 of the inner conical shell 16 under the action of the tangential blade 13, and the oil fume is strongly guided by the tangential blade. Rotate and move downward in a spiral shape along the inner wall of the inner conical shell 16, and the oil fume with high density (high oil content) is thrown to the inner wall under the action of centrifugal force, and finally returns to the inlet pipe 10 through the circulation pipe 14 for separation again; and The fume with low oil content shrinks in the inner chamber 19 and flows toward the center, forming a secondary vortex upward and flowing out through the outlet pipe 17. This process significantly improves the fume purification efficiency of the entire pretreatment device.

The oil fume flowing out from the outlet pipe 17 enters the low-temperature plasma oil fume purification device 7 through the pipe, and the device utilizes a large number of active free radicals excited by its high energy to degrade the oil mist particles and purify small oil mist particles again. VOCs have a certain purification effect. After the low-temperature plasma purification, the oily fume enters the device 8 for photodecomposing and removing the peculiar smell in the oily fume, and the ozone generated by photolysis is used to remove the peculiar smell of the oily fume discharged into the atmosphere.

After triple compound purification, the PME and VOCs in the oil fume are effectively purified to achieve low-altitude and odor-free emissions. The purified oil fume is discharged into the atmosphere under the action of the tractor 9.

Claims (4)

1. The secondary cyclone separator is characterized in that it comprises an outer conical shell, an inner conical shell, an inlet pipe and an outlet pipe; The inlet pipe is set on the outer conical shell, the bottom of the outer conical shell is provided with an oil outlet pipe, and the upper part of the outer conical shell is provided with an upper cover; The inner conical shell is set inside the outer conical shell; the bottom of the inner conical shell is provided with a circulation pipe, and the circulation pipe passes through the outer conical shell; the upper part of the inner conical shell is provided with tangential blades matching its size; the outlet pipe is from the tangential The shaft center of the blade passes through, one end of which is opened on the upper part of the inner cavity of the inner conical shell, and the other end passes through the upper cover of the outer conical shell. 2. secondary cyclone separator as claimed in claim 1, is characterized in that, described inlet pipe and outlet pipe are respectively provided with adjusting baffle. 3. the secondary cyclone separator as claimed in claim 1, is characterized in that, one end of described outlet pipe opening in inner conical shell is a wide mouth. 4. The triple compound high-efficiency oil fume purification device is characterized in that it includes a fume hood, a first-stage cyclone separator, an oil collection tank, a low-temperature plasma oil fume purification device, a photodecomposition device for removing peculiar smell in oil fume, a tractor and as claimed in claim 1~ The secondary cyclone separator described in 3; The fume hood is connected to the first-stage cyclone separator through a pipe; the upper end of the first-stage cyclone separator is connected to the inlet pipe of the second-stage cyclone separator through a pipe, and the lower end is connected to the oil collection tank through a pipe; The circulation pipe of the secondary cyclone separator is connected to the inlet pipe through the pipe, the oil outlet pipe is connected to the oil collection tank through the pipe, and the outlet pipe is connected to the low-temperature plasma oil fume purification device, the photodecomposition device for removing the peculiar smell in the oil fume and the traction machine in turn through the pipe.

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