CN112112709A

CN112112709A - Liquid washing type engine tail gas purifier

Info

Publication number: CN112112709A
Application number: CN201910558938.8A
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 gas purification, and particularly relates to a liquid washing type engine tail gas purifier which is suitable for tail gas purification of engines of vehicles and ships. At present, the tail gas purification of vehicles and ships mainly uses three-way catalyst for purification, but the three-way catalyst purifier has the defects of high manufacturing cost, incomplete purification and easy blockage. The scheme is high in purification efficiency, little in pollution discharge and close to zero pollution, air can be thoroughly purified to reach the standard of human breathing air, fuel vehicles can be changed into electric vehicles to be as clean as the electric vehicles, and the market prospect is unlimited and wide.

Description

Liquid washing type engine tail gas purifier

Field of the invention

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

Background

At present, the tail gas purification of the engines of vehicles and ships mainly uses a three-way catalytic purifier, but the purification mode has high manufacturing cost, the purification is not thorough enough and is easy to block, so that the design of the engine tail gas purifier which is more concise and efficient and has high purification degree is very urgent.

Disclosure of Invention

The invention relates to a liquid washing type engine tail gas purifier mainly using water. The filter element is connected in series with the passage of the engine exhaust pipe and is soaked in liquid, and the filter element is composed of filter element units made of multi-stage mesh materials. The air bubbles are cut by force through the meshes of the filter element unit and then soaked in the liquid to be washed clean. Therefore, large particles in the tail gas can be filtered, and the particles of PM2.5 can be completely filtered, so that the air standard with ultrahigh cleanliness is reached, and the zero emission of the tail gas of the engine is approached.

The specific technical scheme adopted by the invention is that a filter element is connected in series on an engine tail gas channel, the filter element is soaked in liquid, engine tail gas can be exhausted only by forcibly passing through the filter element, tail gas passes through the end A of the filter element below the liquid level to reach the end B of the filter element, and at the end B of the filter element, the gas overflows the liquid level to become clean gas; the filter element consists of at least one layer of filter element unit, the filter element unit is made of planar porous permeable and pervious mesh materials into a certain shape, and adjacent filter element units of each layer are parallel and are separated by a certain distance; when gas process filter core, gaseous big bubble is cut into micro bubble by the tiny mesh of filter core unit, the particulate matter in the micro bubble through the mesh falls into in the liquid is soaked and is melted into in the liquid, consequently just lose the floating capacity, can not spill over the liquid surface again, micro bubble through first layer filter core unit passes through second floor filter core unit again immediately, micro bubble continues to be cut into more tiny bubble by force, particulate matter in this bubble is soaked thoroughly and is melted into in the liquid, tail gas can thoroughly filter.

Drawings

FIG. 1 is a schematic diagram of a liquid scrubbing purifier with an induced draft fan disposed at the front end of the filter element.

FIG. 2 is a schematic diagram of a liquid scrubbing tail gas cleaner with an induced draft fan located at the rear end of the filter element.

FIG. 3 is a schematic diagram of a liquid scrubbing exhaust purifier with a water circulating pump connected in parallel to the filter element.

FIG. 4 is a schematic diagram of a liquid scrubbing type tail gas cleaner with filter elements arranged coaxially and in parallel to form a filter element.

Fig. 5 is a schematic perspective view of the filter element unit and the filter element.

In the figure, 1, an induced draft fan, 2, a purifier shell, 3, a purifier air inlet end, 4, a purifier air outlet end, 5, air, 6, an air inlet channel, 7, a filter element, 8, liquid, 9, a liquid level, 10, an end A, 11, an end B, 12, clean gas, 13, a filter element unit, 14, a liquid circulating device, 15, a liquid circulating pump and 16 a liquid guide pipe.

Detailed Description

In the figure, a filter element 7 is connected in series on an air inlet channel 6 of engine tail gas 5, the filter element 7 is soaked in liquid 8, the engine tail gas 5 can be discharged only by forcibly passing through the filter element 7, the engine tail gas 5 passes through an A end 10 of the filter element 7 below a liquid level 9 to reach a B end 11 of the filter element 7, and gas overflows the liquid level 9 at the B end 11 of the filter element 7 to become clean gas 12; the filter element 7 is composed of at least one layer of filter element unit 13, the filter element unit 13 is made of planar porous permeable and permeable mesh materials and is in a certain shape, and every two adjacent layers of filter element units 13 are parallel and are separated by a certain distance; when gas passes through the filter element 7, the big bubbles of gas are cut into the micro bubbles by the tiny mesh of the filter element unit 13, the particulate matters in the micro bubbles passing through the mesh fall into the liquid to be soaked and melted into the liquid, so the floating capacity is lost, the liquid surface can not overflow, the micro bubbles passing through the first layer of the filter element unit 13 immediately pass through the second layer of the filter element unit 13, the micro bubbles are continuously forcibly cut into the finer bubbles, therefore, the particulate matters in the bubbles are thoroughly soaked and melted into the liquid, and the air is thoroughly filtered.

The air inlet channel 6 of the filter element 7 is also provided with a liquid circulating device 14, the liquid circulating device 14 conveys liquid from the A end 10 to the B end 11 of the filter element 7, then the liquid at the B end 11 of the filter element 7 is sucked to the A end 10, then the liquid at the A end 10 of the filter element 7 is continuously conveyed to the B end 11 of the filter element 7, the circulation is repeated, the liquid circulating device 14 consists of a liquid circulating pump 15 and a liquid guide pipe 16, and the liquid and the gas flow from the A end 10 to the B end 11 of the filter element 7 on the channel of the filter element 7 at the same time.

The filter element 7 is characterized in that a mesh-shaped filter screen is made into a certain geometric shape to form a filter element unit 13, the filter element 7 is formed by coaxially sleeving a plurality of filter element units 13, each filter element unit 13 is separated from the other by a certain distance, engine tail gas can only enter from the axis of the filter element 7 and then diffuse towards the periphery to enter water, and the filter screen comprises mesh cloth, filter paper and filter cloth.

The filter element 7 is a tubular cavity in which the filter element units 13 are arranged, the filter element units 13 are flat filter screens, the planes of the filter element units are vertical to the axial direction of the tubular cavity, the periphery of each filter element unit 13 is matched with the inner wall of the tubular cavity, a certain distance is reserved between every two filter element units 13, and in the process that engine tail gas flows from one end of the filter element 7 to the other end, large bubbles are repeatedly cut into micro bubbles by the filter element units 13 and then enter water.

The filter element unit 13 is a plane type sponge body and is made into a certain geometric shape.

The filter element unit 13 is a geometric body made of honeycomb material.

In fig. 1, a filter element 7 is connected in series on an air inlet channel 6 of an air 5, the filter element 7 is soaked in liquid 8, the air 5 can only force to pass through the filter element 7 to reach an engine, the air 5 passes through an end A10 of the filter element 7 below a liquid level 9 to reach an end B11 of the filter element 7, and at the end B11 of the filter element 7, the air overflows the liquid level 9 to become clean air 12; the filter element 7 is composed of at least one layer of filter element unit 13, the filter element unit 13 is made of planar porous permeable and permeable mesh materials and is in a certain shape, and every two adjacent layers of filter element units 13 are parallel and are separated by a certain distance; when gas passes through the filter element 7, the big bubbles of gas are cut into the micro bubbles by the tiny mesh of the filter element unit 13, the particulate matters in the micro bubbles passing through the mesh fall into the liquid to be soaked and melted into the liquid, so the floating capacity is lost, the liquid surface can not overflow, the micro bubbles passing through the first layer of the filter element unit 13 immediately pass through the second layer of the filter element unit 13, the micro bubbles are continuously forcibly cut into the finer bubbles, therefore, the particulate matters in the bubbles are thoroughly soaked and melted into the liquid, and the air is thoroughly filtered.

In fig. 2, fig. 2 is basically the same as fig. 1 in principle, except that fig. 2 changes the induced draft fan of fig. 1 from being arranged at the front end of the filter element to being arranged at the rear end of the filter element.

In fig. 3, the principle of fig. 3 is the same as that of fig. 1, except that fig. 3 is that a circulating water pump is connected to the filter element in parallel to keep enough water in the filter element to wash air more thoroughly and cleanly when the air passes through the filter element.

Fig. 4 is the same as fig. 1 in principle, except that the filter element in fig. 4 is formed by changing the filter element unit arranged in parallel in the tubular cavity into the filter element unit arranged coaxially and in parallel.

Fig. 5 is a schematic perspective view of the filter element unit and the filter element. In fig. 5, the filter element 7 is composed of a plurality of filter element units 13, and the dotted lines indicate meshes.

In practical application, corresponding chemical reaction substances can be added into the liquid according to the components of the tail gas of the engine so as to neutralize harmful gases.

Claims

1. A liquid washing type engine tail gas purifier comprises an induced draft fan (1), a purifier shell (2), a purifier gas inlet end (3) and a purifier gas outlet end (4), and is characterized in that a filter element (7) is connected in series on a gas inlet channel (6) of engine tail gas (5), the filter element (7) is soaked in liquid (8), the engine tail gas (5) can be discharged only through the filter element (7) forcibly, the engine tail gas (5) passes through an A end (10) of the filter element (7) below a liquid level (9) to reach a B end (11) of the filter element (7), and gas overflows from the liquid level (9) at the B end (11) of the filter element (7) to become clean gas (12); the filter element (7) is composed of at least one layer of filter element unit (13) and more than one layer of filter element unit (13), the filter element unit (13) is made of planar porous, air-permeable and water-permeable mesh materials into a certain shape, and every two adjacent layers of filter element units (13) are parallel and are separated by a certain distance; when gas passes through the filter element (7), large bubbles of the gas are cut into micro bubbles by fine meshes of the filter element unit (13), particles in the micro bubbles passing through the meshes fall into the liquid to be wetted and fused into the liquid, so that the floating capacity is lost, the liquid surface can not overflow, the micro bubbles passing through the first layer of the filter element unit (13) pass through the second layer of the filter element unit (13) immediately, the micro bubbles are continuously cut into finer bubbles by force, the particles in the bubbles are wetted completely and fused into the liquid, and the air is filtered completely.

2. The liquid washing type engine exhaust purifier as claimed in claim 1, wherein a liquid circulation device (14) is further arranged on the air inlet channel (6) of the filter element (7), the liquid circulation device (14) conveys liquid from the A end (10) to the B end (11) of the filter element (7), then the liquid at the B end (11) of the filter element (7) is sucked back to the A end (10), then the liquid at the A end (10) of the filter element (7) is continuously conveyed to the B end (11) of the filter element (7), the circulation is repeated, the liquid circulation device (14) is composed of a liquid circulation pump (15) and a liquid guide pipe (16), and the liquid and the gas simultaneously flow from the A end (10) to the B end (11) of the filter element (7) on the channel of the filter element (7).

3. The liquid washing type engine exhaust purifier as claimed in claim 1, wherein the filter element (7) is formed by making a mesh-shaped filter screen into a certain geometric shape to form a filter element unit (13), a plurality of filter element units (13) are coaxially sleeved to form the filter element (7), each filter element unit (13) is separated from one another by a certain distance, engine exhaust can only enter from the axis of the filter element (7) and then is diffused to the outer periphery to enter water, and the filter screen comprises mesh cloth, filter paper and filter cloth.

4. The liquid washing type engine exhaust purifier as claimed in claim 1, wherein the filter element (7) is a tubular chamber in which the filter element units (13) are arranged, the filter element units (13) are flat type filter screens, the flat surfaces of the filter element units (13) are axially vertical to the tubular chamber, the outer peripheries of the filter element units (13) are matched with the inner wall of the tubular chamber, each filter element unit (13) is spaced by a certain distance, and in the process that engine exhaust flows from one end of the filter element (7) to the other end, large bubbles are repeatedly cut into micro bubbles by the filter element units (13) and then enter water.

5. The purifier of claim 1, wherein the filter element unit (13) is a planar sponge body made into a certain geometric shape.

6. The purifier of claim 1, wherein the filter element unit (13) is a honeycomb material with a certain geometry.