CN112112711A

CN112112711A - Ultrasonic atomization type purifier for engine tail gas

Info

Publication number: CN112112711A
Application number: CN201910558937.3A
Authority: CN
Inventors: 姚舜; 姚志勇; 姚志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-12-22

Abstract

The invention belongs to the field of air purification, and particularly relates to an ultrasonic atomization type purifier for engine tail gas, which is suitable for tail gas purification of engines of vehicles and ships. At present, the air purification of the engines of vehicles and ships mainly uses the three-way catalyst for purification, but the three-way catalyst purifier has the defects of high manufacturing cost, incomplete purification and easy blockage. The invention is characterized in that an ultrasonic purifier is connected in series with a polluted gas passage discharged by an engine, the ultrasonic purifier is provided with a gas mixing chamber, the gas mixing chamber is simultaneously communicated with an ultrasonic water mist generator, the polluted gas and the ultrasonic water mist are mixed to become gas in a wet state, the gas in the wet state enters a particle settling tank, the particle settling tank is filled with water, the particles lose floating capacity in the particle settling tank, air particles such as PM2.5 particles are settled in the water, and the residual clean gas overflows from the particle settling tank. This scheme of adoption, simple structure, with low costs, purification efficiency is high, and the blowdown is minimum, approaches zero pollution.

Description

Ultrasonic atomization type purifier for engine tail gas

Field of the invention

The invention belongs to the field of gas purification, and particularly relates to an ultrasonic atomization type purifier for engine tail gas, which is suitable for tail gas purification of engines of vehicles and ships.

Background

At present, the air purification of the engines of vehicles and ships mainly uses a ternary purifier, but the ternary purifier has the defects of high manufacturing cost, incomplete purification and easy blockage, so that the development of a purifier for completely purifying the tail gas of the engine is very necessary.

Disclosure of Invention

The utility model provides an engine exhaust ultrasonic atomization formula clarifier, connect an ultrasonic wave formula clarifier in series on engine exhaust pollution gas passageway, this ultrasonic wave formula clarifier has the gas mixing chamber, the gas mixing chamber communicates ultrasonic water mist generator simultaneously, become the gas of moist state after gaseous and the ultrasonic water mist mixes, the gas of moist state reentrants particulate matter sedimentation tank, there is water in the particulate matter sedimentation tank, the particulate matter loses the floating ability, wherein air particle such as PM2.5 granule is depositd in aqueous, surplus clean gas overflows from the particulate matter sedimentation tank. This scheme of adoption, simple structure, with low costs, purification efficiency is high, and the blowdown is minimum, approaches zero pollution.

The specific technical scheme adopted for realizing the invention is that the polluted gas discharged by the engine enters a gas mixing chamber through an air pipeline, the gas mixing chamber is a closed space and is simultaneously communicated with an ultrasonic water mist generator, the ultrasonic water mist generator atomizes water into ultrasonic water mist, the gas mixing chamber is communicated with a particulate matter sedimentation tank through a gas mixing pipe, the particulate matter sedimentation tank is filled with water, an air exhaust fan is connected on the gas mixing pipe in series, the gas outlet end of the gas mixing pipe is communicated with a gas chopper, the gas chopper is a gas-permeable cavity, the gas-permeable surface of the gas chopper is a porous filter screen, the gas chopper is arranged below the water surface in the particulate matter sedimentation tank, and the upper end of the particulate matter sedimentation tank is provided with a gas outlet pipe; polluted gas discharged by an engine is introduced by an air exhaust fan and enters a gas mixing chamber through an air pipeline, ultrasonic water mist also enters the gas mixing chamber, the polluted gas and the ultrasonic water mist are mixed in the gas mixing chamber to become wet gas, the wet gas enters a particle settling tank through the air exhaust fan, water is arranged in the particle settling tank, the outlet end of a gas mixing pipe is communicated with a gas chopper, the gas chopper is soaked in the water, the wet gas can only enter the water through fine meshes of the gas chopper, the wet gas is forcibly cut into fine bubbles by the gas chopper, polluted particulate matters in the fine bubbles are precipitated in the water, and the rest part of the polluted particulate matters becomes clean gas and is discharged from an exhaust pipe; all of the above components except the air inlet and the air outlet are enclosed in the purifier housing.

Drawings

Fig. 1 is a schematic diagram of the principle of ultrasonic water mist type air purification consisting of a mesh-shaped chamber of a gas chopper.

Fig. 2 is a schematic diagram of the principle of ultrasonic water mist type air purification consisting of a tubular cavity and a filter screen arranged in the tubular cavity of the gas chopper.

Fig. 3 is a schematic diagram of a gas chopper consisting of a mesh chamber.

FIG. 4 is a schematic view of the principle of the gas chopper with the tubular cavity and the screen arranged therein.

Fig. 5 is a schematic plan view of a screen.

In the figure, 1, polluted gas, 2, an air pipeline, 3, a gas mixing chamber, 4, an ultrasonic water mist generator, 5, a gas mixing pipe, 6, a particle settling tank, 7, an air exhaust fan, 8, a gas chopper, 9, a water surface, 10, an exhaust pipe, 11, clean gas, 12, wet gas, 13, ultrasonic water mist, 14, a purifier shell, 15, a tubular cavity, 16, a filter screen, 17, a net-shaped cavity, 18, micro bubbles and 19, and the ultrasonic water mist generator shell.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

In the figure, the gas chopper 8 is composed of a closed and permeable chamber, called a mesh chamber 17, formed by a screen 16, and a plurality of mesh chambers 17 of different sizes are coaxially and parallelly sleeved to form the gas chopper 8, and the layers of the screen are separated by a certain distance. The tail gas can only enter from the axis of the chopper 8 through the gas conveying pipe, and then spread to the periphery to enter into the liquid.

The gas chopper 8 is composed of a tubular cavity 15 and filter screens 16 arranged in the tubular cavity, the plane of each filter screen 16 is vertical to the axial direction of the tubular cavity 15, the periphery of the plane of each filter screen 16 is matched with the inner wall of the tubular cavity 15, the filter screens 16 are parallel and spaced at a certain distance, and the wet gas 12 can only pass through small holes of the filter screens 16, so that the wet gas 12 is forcibly cut into tiny bubbles 18.

Fig. 1 is a schematic view of the principle of air purification with a mesh chamber as the gas chopper. In fig. 1, a polluted gas 1 enters a gas mixing chamber 3 through an air pipeline 2, the gas mixing chamber 3 is a closed space, the gas mixing chamber 3 is simultaneously communicated with an ultrasonic water mist generator 4, the ultrasonic water mist generator 4 is formed by water in a closed container, the ultrasonic water mist generator 4 atomizes the water into ultrasonic water mist 13, the gas mixing chamber 3 is communicated with a particulate matter sedimentation tank 6 through a gas mixing pipe 5, the particulate matter sedimentation tank 6 is filled with the water, an air exhaust fan 7 is connected to the gas mixing pipe 5 in series, the gas outlet end of the gas mixing pipe 5 is communicated with a gas chopper 8, the gas chopper 8 is a gas-permeable chamber, the gas-permeable surface of the gas chopper is a porous filter screen, the gas chopper 8 is arranged below the water surface 9 in the particulate matter sedimentation tank 6, and the gas outlet pipe 10 is arranged at the upper end of the; the method comprises the following steps that a polluted gas 1 is introduced by an air exhaust fan 7 and enters an air mixing chamber 3 through an air pipeline 2, ultrasonic water mist 13 also enters the air mixing chamber 3, the polluted gas 1 and the ultrasonic water mist 13 are mixed in the air mixing chamber 3 to become wet gas 12, the wet gas 12 enters a particulate matter sedimentation tank 6 through the air exhaust fan 7, the particulate matter sedimentation tank 6 contains water, the outlet end of an air mixing pipe 5 is communicated with a gas chopper 8, the gas chopper 8 is soaked in water, the wet gas 12 can only enter the water through fine meshes of the gas chopper 8, the wet gas 12 is forcibly cut into fine bubbles 18 by the gas chopper 8, polluted particles in the fine bubbles 18 are precipitated in the water, the rest part becomes clean gas 11, and the clean gas 11 is conveyed to an engine air inlet pipe through an air outlet pipe 10; all of the above components are enclosed in the purifier housing 14 except for the air inlet and the air outlet.

Fig. 2 is a schematic view of the principle of air purification consisting of a tubular cavity and a filter screen arranged in the tubular cavity. Fig. 2 is basically the same principle as fig. 1, except that in fig. 2, the gas chopper 8 is composed of a tubular cavity 15 and a filter screen 16 arranged in the tubular cavity 15, the plane of the filter screen 16 is vertical to the axial direction of the tubular cavity 15, the periphery of the plane of the filter screen 16 is matched with the inner wall of the tubular cavity 15, the filter screens 16 are parallel and spaced apart, the wet gas 12 can only pass through the small holes of the filter screen 16 and enter the water, and therefore the wet gas 12 is forcedly cut into tiny bubbles 18.

Fig. 3 is a schematic diagram of a gas chopper consisting of a mesh chamber. In fig. 3, the mesh chamber 17 is a gas-permeable closed cavity, and a plurality of mesh chambers 17 of different sizes are coaxially and parallelly sleeved to form the gas chopper 8, and a certain distance is reserved between the filter screen layers.

FIG. 4 is a schematic view of the principle of the gas chopper with the tubular cavity and the screen arranged therein. In fig. 4, the gas chopper 8 is composed of a tubular cavity 15 and a filter screen 16 arranged therein, the plane of the filter screen 16 is axially perpendicular to the tubular cavity 15, the periphery of the plane of the filter screen 16 is matched with the inner wall of the tubular cavity 15, and the filter screens 16 are parallel and spaced at a certain distance.

Fig. 5 is a schematic plan view of a screen. The screen 16 is a mesh-like planar body that includes a sponge, an air-permeable sand hammer, and various variants of porous screens.

The engine tail gas ultrasonic atomization type purifier has three types of installation positions: the first is installed between the engine and the ternary purifier, the second is installed behind the ternary purifier, and the third is to directly replace the ternary purifier, namely, the ternary purifier is omitted and the engine tail gas ultrasonic atomization type purifier is directly installed.

Claims

1. An engine tail gas ultrasonic atomization type purifier is characterized in that polluted gas (1) discharged from an engine enters a gas mixing chamber (3) through an air pipeline (2), the gas mixing chamber (3) is a closed space, the gas mixing chamber (3) is simultaneously communicated with an ultrasonic mist generator (4), the ultrasonic mist generator (4) atomizes water for an electric drive ultrasonic circuit to form ultrasonic mist (13), the gas mixing chamber (3) is communicated into a particle settling tank (6) through a gas mixing pipe (5), water is arranged in the particle settling tank (6), an air exhaust fan (7) is connected on the gas mixing pipe (5) in series, the air outlet end of the gas mixing pipe (5) is communicated with a gas chopper (8), the gas chopper (8) is a ventilated cavity, the ventilated surface of the gas chopper is a porous filter screen, and the gas chopper (8) is arranged below a water surface (9) in the particle settling tank (6), the upper end of the particle sedimentation tank (8) is provided with an air outlet pipe (10); the method comprises the steps that polluted gas (1) discharged from an engine is introduced by an air exhaust fan (7) and enters a gas mixing chamber (3) through an air pipeline (2), ultrasonic water mist (13) also enters the gas mixing chamber (3), the polluted gas (1) discharged from the engine and the ultrasonic water mist (13) are mixed in the gas mixing chamber (3) to form humid gas (12), the humid gas (12) enters a particle settling tank (6) through the air exhaust fan (7), water exists in the particle settling tank (6), the outlet end of a gas mixing pipe (5) is communicated with a gas chopper (8), the gas chopper (8) is soaked in the water, the humid gas (12) can only enter the water through fine meshes of the gas chopper (8), the humid gas (12) is forcedly cut into fine-crushed micro bubbles (18) by the gas chopper (8), the micro bubbles (18) are cooled and polluted particles in the air are precipitated in the water, the rest part becomes clean gas (11), and the clean gas (11) is discharged through the gas outlet pipe (10); all of the above components except the air inlet and the air outlet are enclosed in a purifier housing (14).

2. The ultrasonic atomizing purifier for the engine exhaust according to claim 1, characterized in that the gas chopper (8) is composed of a closed and permeable chamber, called a mesh chamber (17), formed by a screen (16), and a plurality of mesh chambers (17) with different sizes are coaxially and parallelly sleeved to form the gas chopper (8), wherein the screen layers are spaced from one another, and the exhaust can only enter from the axis of the chopper (8) through a gas conveying pipe and then is diffused to the periphery to enter into the liquid.

3. The ultrasonic atomizing purifier for the engine exhaust according to claim 1, wherein the gas chopper (8) is composed of a tubular cavity (15) and a filter screen (16) arranged in the tubular cavity, the plane of the filter screen (16) is vertical to the axial direction of the tubular cavity (15), the periphery of the plane of the filter screen (16) is matched with the inner wall of the tubular cavity (15), the filter screens (16) are parallel and spaced at a certain distance, the humid gas (12) can only pass through the pores of the filter screen (16), and therefore the humid gas (12) is forcedly cut into tiny bubbles (18).