CN111514706A

CN111514706A - Purification system and purification method for absorbing volatile gases of VOCs (volatile organic compounds)

Info

Publication number: CN111514706A
Application number: CN202010520858.6A
Authority: CN
Inventors: 崔云兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-08-11

Abstract

The invention discloses a purification system for absorbing volatile gases (VOCs), which comprises a lower hemispherical shell and an upper hemispherical shell, wherein the upper end outline of the lower hemispherical shell is coaxially and rotationally matched with the lower end outline of the upper hemispherical shell through a horizontal first sealing bearing; the combination of the lower hemispherical shell and the upper hemispherical shell forms a whole spherical shell, a spherical VOCs absorption cavity is arranged inside the whole spherical shell, and VOCs absorption liquid is arranged at the bottom of the spherical VOCs absorption cavity; all the splashing devices can generate continuous rotating surging action on gas in the spherical shell-shaped waste gas washing and absorbing channel in the process of rotating around the horizontal axis, so that VOCs-containing waste gas flowing through the spherical shell-shaped waste gas washing and absorbing channel forms rotational flow rotating along the horizontal axis, and the VOCs-containing waste gas in the spherical shell-shaped waste gas washing and absorbing channel is in full contact with absorbing liquid water in a large area.

Description

Purification system and purification method for absorbing volatile gases of VOCs (volatile organic compounds)

Technical Field

The invention belongs to the field of VOCs gas absorption.

Background

Solvents such as biodiesel and kerosene can effectively absorb a large amount of gas which discharges VOCs, so that the gas can be used as a VOCs absorbent.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a purification system and a purification method for absorbing volatile gases of VOCs.

The technical scheme is as follows: in order to achieve the purpose, the purification system for absorbing volatile gases of VOCs comprises a lower hemispherical shell and an upper hemispherical shell, wherein the upper end outline of the lower hemispherical shell is coaxially and rotationally matched with the lower end outline of the upper hemispherical shell through a horizontal first sealing bearing;

the lower hemispherical shell and the upper hemispherical shell are combined to form a whole spherical shell, a spherical VOCs absorption cavity is arranged inside the whole spherical shell, and VOCs absorption liquid is arranged at the bottom of the spherical VOCs absorption cavity; the effective solvent component in the absorption liquid of VOCs in this embodiment can be biodiesel, silicone oil, edible oil, used oil or kerosene, the above solvent component can effectively dissolve VOCs organic gas, in the existing method, a small amount of hydrophilic ionic liquid can be uniformly dispersed in a large amount of biodiesel in a form of dispersed phase under the action of nonionic surfactant and cosurfactant, and an ion liquid in oil (IL/O) type microemulsion is obtained as the absorption liquid;

the upper hemispherical shell is fixedly installed, and the lower hemispherical shell can be driven by a driving device, so that the lower hemispherical shell rotates along the axis of the first sealing bearing;

when the lower hemispherical shell does not rotate, the VOCs absorption liquid is concentrated at the bottom in the lower hemispherical shell under the action of gravity, and the VOCs absorption liquid level at the bottom in the lower hemispherical shell is in a horizontal state; when the hemisphere casing is rotatory down, the VOCs absorption liquid of the bottom in the hemisphere casing then rotates with the form of whirl under can driving, makes whirl state VOCs absorption liquid level center can the undercut under the effect of centrifugal force, and the inside face along hemisphere casing down evenly spreads outwards at the edge, and then makes the whirl liquid of VOCs absorption liquid personally submit the concave sphere to the VOCs absorption liquid of whirl state evenly spreads the inside face at hemisphere casing under whole.

Furthermore, a support is arranged below the lower hemispherical shell, the driving device comprises a first motor fixedly mounted on the support, a first output shaft of the first motor and the first sealing bearing are coaxially arranged, the tail end of the first output shaft is fixedly connected with the bottom end of the lower hemispherical shell coaxially, and the rotation energy of the first output shaft synchronously drives the lower hemispherical shell to rotate.

Further, the left end of the upper hemispherical shell is integrally and coaxially communicated and connected with a gas outlet shell, and the right end of the upper hemispherical shell is integrally and coaxially communicated and connected with a gas inlet shell; the inside of the gas leading-out shell is a purified waste gas leading-out cavity, and the inside of the gas leading-in shell is a VOCs-containing waste gas leading-in cavity; still including containing VOCs exhaust emission pipe, the leading-out end intercommunication that contains VOCs exhaust emission pipe contains VOCs waste gas import chamber, still including purified distribution delivery pipe, the leading-in end intercommunication of purified distribution delivery pipe the chamber is derived to purified waste gas.

Further, the gas leading-out shell is fixed on the support through a plurality of left support columns; the gas leading-in shell is fixedly connected with the support through a plurality of right support columns.

Further, an inner ball shell is fixedly arranged inside the whole ball shell; the center of the inner ball shell is superposed with the center of the whole ball shell; the outer wall of the inner spherical shell and the inner wall of the whole spherical shell form a spherical shell-shaped waste gas leaching and absorbing channel, the left end of the spherical shell-shaped waste gas leaching and absorbing channel is communicated with the same axle center of the purified waste gas guiding cavity, and the right end of the spherical shell-shaped waste gas leaching and absorbing channel is communicated with the same axle center of the VOCs-containing waste gas guiding cavity.

Further, a fixed shaft is coaxially arranged in the purified waste gas leading-out cavity, and the left end of the fixed shaft is fixedly connected with the gas leading-out shell; the right end of the fixed shaft is fixedly connected with the left end of the inner ball shell in a coaxial mode.

Furthermore, a rotating sleeve is rotatably sleeved on the fixed shaft through a second bearing, a rotating head is coaxially arranged in the VOCs waste gas introducing cavity, and a bearing sleeve is fixedly arranged at the right end of the inner ball shell coaxially; a horizontal second motor is fixedly installed in the inner cavity of the inner ball shell through a motor support, and a second output shaft of the second motor is in running fit with the bearing sleeve through a third sealing bearing; the tail end of the second output shaft is fixedly connected with the rotating head coaxially, and the second motor drives the second output shaft to rotate through the second output shaft;

a plurality of groups of absorbing liquid sputtering units which are bent in an arc shape are distributed on the outer side of the inner ball shell along the horizontal axis of the inner ball shell in a circumferential array; the left end and the right end of each group of absorption liquid sputtering units are respectively a left linkage arm and a right linkage arm, the tail ends of the left linkage arms of all the absorption liquid sputtering units are fixedly connected to the rotating sleeve, and the right linkage arms of all the absorption liquid sputtering units are fixedly connected to the rotating head;

the second motor can drive a plurality of groups of absorption liquid sputtering units to rotate around the horizontal axis through a second output shaft;

each group of absorption liquid sputtering units comprises a plurality of splashing devices, and two adjacent splashing devices on each group of absorption liquid sputtering units are connected through hard connecting rods; one splash device at the leftmost end of each group of absorption liquid sputtering units is connected with the left linkage arm, and one splash device at the rightmost end of each group of absorption liquid sputtering units is connected with the right linkage arm;

each splashing device comprises a hollow roller, a plurality of splashing holes are uniformly distributed and arranged in a hollow manner in a circumferential array manner on the roller, an annular rolling groove is formed in the outer wall of the middle section of each splashing device, and a left bearing sleeve and a right bearing sleeve are integrally arranged at two ends of the roller; a central shaft is coaxially arranged in the roller, a centrifugal liquid throwing cavity is formed between the outer wall of the central shaft and the inner wall of the roller and is communicated with each splashing hole; a plurality of swirl promoting blades are distributed in the centrifugal liquid throwing cavity in a circumferential array manner, and the length direction of each swirl promoting blade is parallel to the axial direction of the roller; the two ends of the central shaft are fixedly connected with a left fixed shaft and a right fixed shaft coaxially respectively, and the left fixed shaft and the right fixed shaft are in running fit with the left bearing sleeve and the right bearing sleeve respectively through a left bearing and a right bearing, so that the roller can rotate around the central shaft;

two ends of each connecting rod are respectively and fixedly connected with the right fixed shaft and the left fixed shaft;

the left linkage arm is fixedly connected with a left fixed shaft on a splash device at the leftmost end of the absorption liquid sputtering unit; the right linkage arm is fixedly connected with a right fixed shaft of a splash device at the rightmost end of the absorption liquid sputtering unit;

a plurality of rings of annular discs are arranged on the outer wall of the inner ball shell at equal intervals from left to right, each annular disc is coaxially arranged with the horizontal axis of the inner ball shell, the inner ring of each annular disc is integrally and fixedly connected with the outer wall of the inner ball shell, and the outer ring of each annular disc is an annular rolling track;

each splash device on the absorption liquid sputtering unit corresponds to one annular disc, and the rolling groove on each splash device is in rolling fit with the corresponding annular rolling track on the annular disc, so that the roller rolls along the annular rolling track on the annular disc;

and the splashing devices positioned below the height of the horizontal axis are immersed in the VOCs absorption liquid in the rotational flow state uniformly spread on the inner wall surface of the whole lower hemispherical shell.

Further, the absorption method of the purification system for absorbing the volatile gases of the VOCs comprises the following steps:

the preparation process comprises the following steps: introducing a proper amount of VOCs absorption liquid into the spherical shell-shaped waste gas leaching absorption channel, wherein the VOCs absorption liquid is concentrated at the bottom of the lower hemispherical shell under the action of gravity, and the liquid surface of the VOCs absorption liquid at the bottom of the lower hemispherical shell is in a horizontal state;

exhaust gas purification path of VOCs: the VOCs-containing waste gas is continuously led into the VOCs-containing waste gas leading-in cavity through the VOCs-containing waste gas discharge pipe under the action of an external air pump or an air blower, then the VOCs-containing waste gas leading-in cavity in the VOCs-containing waste gas leading-in cavity is continuously led into the right end of the spherical shell-shaped waste gas leaching absorption channel under the action of air pressure, VOCs gas can be fully absorbed by absorption liquid in the process that the VOCs-containing waste gas gradually flows to the left end of the spherical shell-shaped waste gas leaching absorption channel from the right end of the spherical shell-shaped waste gas leaching absorption channel, finally the absorbed and purified waste gas is continuously led into the purified waste gas leading-out cavity, and finally the purified waste gas is discharged through the purified gas distribution discharge;

specific absorption process of VOCs gas:

starting a first motor, so that the rotation of a first output shaft can synchronously drive the lower hemispherical shell to rotate at a rotating speed of 150r/min to 200r/min, the rotation of the lower hemispherical shell can continuously form a rotating shearing force on the bottom of the VOCs absorption liquid at the bottom in the lower hemispherical shell, so that the VOCs absorption liquid at the bottom in the lower hemispherical shell rotates along with the lower hemispherical shell, the liquid surface center of the VOCs absorption liquid in a rotational flow state can be sunken downwards under the action of centrifugal force, the edge of the VOCs absorption liquid is uniformly spread along the inner wall surface of the lower hemispherical shell, and the VOCs absorption liquid in the rotational flow state is uniformly spread on the inner wall surface of the whole lower hemispherical shell; at the moment, the splashing devices positioned below the height of the horizontal axis are immersed into VOCs absorbing liquid in a rotational flow state and uniformly spread on the inner wall surface of the whole lower hemispherical shell, and then part of the VOCs absorbing liquid on the inner wall of the lower hemispherical shell flows into a centrifugal liquid throwing cavity in the splashing devices through a plurality of splashing holes, so that the VOCs absorbing liquid is filled in the centrifugal liquid throwing cavity in the splashing devices below the height of the horizontal axis;

meanwhile, a second motor is started, and then the second motor can drive all absorbing liquid sputtering units to rotate around the horizontal axis at a rotating speed of 80r/min to 120r/min through a second output shaft, so that all splashing devices rotate around the horizontal axis continuously, meanwhile, as rolling grooves on the splashing devices are matched with the corresponding annular rolling tracks on the annular disc in a rolling mode, rollers on the splashing devices can roll along the annular rolling tracks on the annular disc continuously, all the rollers can rotate along the axis of the rollers continuously while rotating around the horizontal axis, and in the process of continuous rotation of the rollers along the axis of the rollers, the cyclone promoting blades can drive the absorbing liquid filled in the centrifugal liquid throwing cavity to rotate along with the absorbing liquid, so that the absorbing liquid in the centrifugal liquid throwing cavity forms continuous centrifugal force; when the splashing device rotates to the upper part of the spherical shell-shaped waste gas leaching and absorbing channel along the horizontal axis, VOCs absorbing liquid originally filled in the centrifugal liquid throwing cavity of the splashing device can be splashed out in the form of water spray jet through the plurality of splashing holes under the action of centrifugal force generated by spinning rotation, so that the upper part of the whole spherical shell-shaped waste gas leaching and absorbing channel is continuously filled with a large amount of VOCs absorbing liquid water spray which is interwoven and splashed, and as all the splashing devices can generate continuous rotating surging action on gas in the spherical shell-shaped waste gas leaching and absorbing channel in the process of rotating around the horizontal axis, VOCs-containing waste gas flowing through the spherical shell-shaped waste gas leaching and absorbing channel forms rotational flow rotating along the horizontal axis, the VOCs-containing waste gas in the spherical shell-shaped waste gas leaching and absorbing channel can be fully contacted with the absorbing liquid water spray in a large area, and the airflow stroke is increased by the rotating airflow, make the absorption process more thorough to make the VOCs in the waste gas that contains VOCs fully dissolve in the absorption liquid, thereby play the effect of purifying the gas, reduce the VOCs concentration in the waste gas of final emission.

Has the advantages that: when the splashing device rotates to the upper part of the spherical shell-shaped waste gas leaching and absorbing channel along the horizontal axis, VOCs absorbing liquid originally filled in the centrifugal liquid throwing cavity of the splashing device can be splashed out in the form of water spray jet through the plurality of splashing holes under the action of centrifugal force generated by spinning rotation, so that the upper part of the whole spherical shell-shaped waste gas leaching and absorbing channel is continuously filled with a large amount of VOCs absorbing liquid water spray which is interwoven and splashed, and as all the splashing devices can generate continuous rotating surging action on gas in the spherical shell-shaped waste gas leaching and absorbing channel in the process of rotating around the horizontal axis, VOCs-containing waste gas flowing through the spherical shell-shaped waste gas leaching and absorbing channel forms rotational flow rotating along the horizontal axis, the VOCs-containing waste gas in the spherical shell-shaped waste gas leaching and absorbing channel can be fully contacted with the absorbing liquid water spray in a large area, and the airflow stroke is increased by the rotating airflow, make the absorption process more thorough to make the VOCs in the waste gas that contains VOCs fully dissolve in the absorption liquid, thereby play the effect of purifying the gas, reduce the VOCs concentration in the waste gas of final emission

Drawings

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

FIG. 2 is a first cross-sectional view of the present invention in its entirety;

FIG. 3 is a second overall cross-sectional view of the present invention;

FIG. 4 is a schematic view of the inner structure of the whole ball casing (the whole ball casing is hidden)

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of the interconnection of adjacent sputters;

FIG. 7 is a schematic view of a single splash guard configuration;

FIG. 8 is a first cross-sectional configuration of FIG. 7;

fig. 9 is a second cross-sectional structure of fig. 7.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The scheme has the structural part that:

the purification system for absorbing volatile gases of VOCs as shown in fig. 1 to 9 comprises a lower hemispherical shell 52 and an upper hemispherical shell 51, wherein an upper end contour 62 of the lower hemispherical shell 52 is coaxially and rotationally matched with a lower end contour 61 of the upper hemispherical shell 51 through a horizontal first sealing bearing 63;

the combination of the lower hemispherical shell 52 and the upper hemispherical shell 51 forms a whole spherical shell 100, the inside of the whole spherical shell 100 is a spherical VOCs absorption cavity, and VOCs absorption liquid 8 is arranged at the bottom of the spherical VOCs absorption cavity;

the upper hemispherical shell 51 is fixedly installed, and the lower hemispherical shell 52 can be driven by a driving device, so that the lower hemispherical shell 52 rotates along the axis of the first sealed bearing 63;

when the lower hemispherical shell 52 does not rotate, the VOCs absorption liquid 8 is concentrated at the bottom in the lower hemispherical shell 52 under the action of gravity, and the VOCs absorption liquid 8 at the bottom in the lower hemispherical shell 52 is in a horizontal state; when the hemisphere casing 52 is rotatory down, the VOCs absorption liquid 8 of the bottom in the hemisphere casing 52 is rotatory with the form of whirl under can driving, make whirl state VOCs absorption liquid 8 liquid level center can the undercut under the effect of centrifugal force, the inside wall face of edge hemisphere casing 52 outwards evenly spreads, and then make VOCs absorption liquid 8's whirl liquid personally submit the concave spherical surface, thereby VOCs absorption liquid 8 evenly spreads the inside wall face at whole hemisphere casing 52 down of whirl state.

A support 71 is arranged below the lower hemispherical shell 52, the driving device comprises a first motor 4 fixedly mounted on the support 71, a first output shaft 5 of the first motor 4 and the first sealing bearing 63 are coaxially arranged, the tail end of the first output shaft 5 is fixedly connected with the bottom end of the lower hemispherical shell 52 coaxially, and the rotation of the first output shaft 5 can synchronously drive the lower hemispherical shell 52 to rotate.

The left end of the upper hemispherical shell 51 is integrally and coaxially communicated with a gas outlet shell 24, and the right end of the upper hemispherical shell 51 is integrally and coaxially communicated with a gas inlet shell 13; the inside of the gas leading-out shell 24 is a purified waste gas leading-out cavity 26, and the inside of the gas leading-in shell 13 is a waste gas leading-in cavity 12 containing VOCs; the device also comprises a VOCs-containing waste gas discharge pipe 11, wherein the leading-out end of the VOCs-containing waste gas discharge pipe 11 is communicated with the VOCs-containing waste gas leading-in cavity 12, and the device also comprises a purified gas distribution discharge pipe 22, and the leading-in end of the purified gas distribution discharge pipe 22 is communicated with the purified waste gas leading-out cavity 26.

The gas leading-out shell 24 is fixed on a support 71 through a plurality of left struts 1; the gas introduction housing 13 is fixedly connected to the support 71 by right struts 73.

An inner ball shell 16 is fixedly arranged inside the whole ball shell 100; the center of the inner ball shell 16 coincides with the center of the whole ball shell 100; the outer wall of the inner spherical shell 16 and the inner wall of the whole spherical shell 100 form a spherical shell-shaped waste gas leaching and absorbing channel 19, the left end of the spherical shell-shaped waste gas leaching and absorbing channel 19 is communicated with the purified waste gas leading-out cavity 26 through the same axle center, and the right end of the spherical shell-shaped waste gas leaching and absorbing channel 19 is communicated with the VOCs-containing waste gas leading-in cavity 12 through the same axle center.

A fixed shaft 25 is coaxially arranged in the purified waste gas outlet cavity 26, and the left end of the fixed shaft 25 is fixedly connected with the gas outlet shell 24; the right end of the fixed shaft 25 is coaxially and fixedly connected with the left end of the inner ball shell 16.

A rotating sleeve 23 is rotatably sleeved on the fixed shaft 25 through a second bearing 2, a rotating head 10 is coaxially arranged in the VOCs waste gas introducing cavity 12, and a bearing sleeve 15 is coaxially and fixedly arranged at the right end of the inner ball shell 16; a horizontal second motor 21 is fixedly installed in the inner cavity 3 of the inner ball shell 16 through a motor bracket 6, and a second output shaft 9 of the second motor 21 is in running fit with the bearing sleeve 15 through a third sealing bearing 7; the end of the second output shaft 9 is coaxially and fixedly connected with the rotating head 10, and the second motor 21 drives the second output shaft 9 to rotate through the second output shaft 9;

a plurality of groups of absorbing liquid sputtering units 150 which are bent in an arc shape are distributed on the outer side of the inner ball shell 16 along the horizontal axis 101 of the inner ball shell in a circumferential array; the left end and the right end of each group of absorption liquid sputtering units 150 are respectively a left linkage arm 20 and a right linkage arm 14, the tail ends of the left linkage arms 20 of all the absorption liquid sputtering units 150 are fixedly connected to the rotating sleeve 23, and the right linkage arms 14 of all the absorption liquid sputtering units 150 are fixedly connected to the rotating head 10;

the second motor 21 can drive a plurality of groups of absorption liquid sputtering units 150 to rotate around the horizontal axis 101 through a second output shaft 9;

each group of the absorption liquid sputtering units 150 comprises a plurality of splashing devices 18, and two adjacent splashing devices 18 on each group of the absorption liquid sputtering units 150 are connected through hard connecting rods 27; one splash device 18 at the leftmost end of each group of absorption liquid sputtering units 150 is connected with the left linkage arm 20, and one splash device 18 at the rightmost end of each group of absorption liquid sputtering units 150 is connected with the right linkage arm 14;

each splash device 18 comprises a hollow roller 30, a plurality of splash holes 29 are uniformly distributed in a circumferential array on the roller 30, an annular rolling groove 31 is formed in the outer wall of the middle section of each splash device 18, and a left bearing sleeve 37 and a right bearing sleeve 42 are integrally arranged at two ends of the roller 30; a central shaft 39 is coaxially arranged in the roller 30, a centrifugal liquid throwing cavity 34 is formed between the outer wall of the central shaft 39 and the inner wall of the roller 30, and the centrifugal liquid throwing cavity 34 is communicated with each splashing hole 29; a plurality of swirl promoting blades 35 are circumferentially distributed in the centrifugal liquid throwing cavity 34 in an array manner, and the length direction of each swirl promoting blade 35 is parallel to the axial direction of the roller 30; a left fixed shaft 33 and a right fixed shaft 41 are coaxially and fixedly connected to two ends of the central shaft 39 respectively, and the left fixed shaft 33 and the right fixed shaft 41 are in running fit with the left bearing sleeve 37 and the right bearing sleeve 42 through a left bearing 32 and a right bearing 40 respectively, so that the roller 30 can rotate around the central shaft 39;

two ends of each connecting rod 27 are respectively fixedly connected with the right fixed shaft 41 and the left fixed shaft 33;

the left linkage arm 20 is fixedly connected with a left fixed shaft 33 on a splash device 18 at the leftmost end of the absorption liquid sputtering unit 150; the right linkage arm 14 is fixedly connected with a right fixed shaft 41 of a splash device 18 at the rightmost end of the absorption liquid sputtering unit 150;

a plurality of rings of annular discs 17 are arranged on the outer wall of the inner ball shell 16 at equal intervals from left to right, each annular disc 17 is coaxially arranged with the horizontal axis 101 of the inner ball shell 16, the inner ring of each annular disc 17 is integrally and fixedly connected with the outer wall of the inner ball shell 16, and the outer ring of each annular disc 17 is an annular rolling track 17.1;

each splash device 18 on the absorption liquid sputtering unit 150 corresponds to one annular disc 17, and the rolling groove 31 on each splash device 18 is in rolling fit with the corresponding annular rolling track 17.1 on the annular disc 17, so that the roller 30 rolls along the annular rolling track 17.1 on the annular disc 17;

the splashers 18 located below the level of the horizontal axis 101 are immersed in the vortical absorption liquid 8 of VOCs which is uniformly spread on the inner wall surface of the whole lower hemispherical shell 52.

The working principle part of the scheme is as follows:

the absorption method of the purification system for absorbing volatile gases of VOCs is as follows:

the preparation process comprises the following steps: introducing a proper amount of VOCs absorption liquid into the spherical shell-shaped waste gas leaching absorption channel 19, wherein the VOCs absorption liquid 8 is concentrated at the bottom in the lower hemispherical shell 52 under the action of gravity, and the liquid level of the VOCs absorption liquid 8 at the bottom in the lower hemispherical shell 52 is in a horizontal state;

exhaust gas purification path of VOCs: the VOCs-containing waste gas is continuously led into the VOCs-containing waste gas leading-in cavity 12 through the VOCs-containing waste gas discharge pipe 11 under the action of an external air pump or an air blower, then the VOCs-containing waste gas leading-in cavity 12 in the VOCs-containing waste gas leading-in cavity 12 is continuously led into the right end of the spherical shell-shaped waste gas leaching and absorbing channel 19 under the action of air pressure, VOCs gas can be fully absorbed by the absorption liquid in the process that the VOCs-containing waste gas gradually flows to the left end of the spherical shell-shaped waste gas leaching and absorbing channel 19 from the right end of the spherical shell-shaped waste gas leaching and absorbing channel 19, finally the absorbed and purified waste gas is continuously led into the purified waste gas leading-out cavity 26, and finally the purified waste gas is discharged through the purified gas distribution discharge;

specific absorption process of VOCs gas:

starting the first motor 4, so that the rotation of the first output shaft 5 can synchronously drive the lower hemispherical shell 52 to rotate at a rotation speed of 150r/min to 200r/min, the rotation of the lower hemispherical shell 52 can continuously form a rotating shearing force on the bottom of the VOCs absorption liquid 8 at the bottom in the lower hemispherical shell 52, so that the VOCs absorption liquid 8 at the bottom in the lower hemispherical shell 52 rotates along with the lower hemispherical shell 52, the liquid surface center of the VOCs absorption liquid 8 in a swirling state can be sunken downwards under the action of centrifugal force, the edge of the VOCs absorption liquid is uniformly spread along the inner wall surface of the lower hemispherical shell 52, and the VOCs absorption liquid 8 in a swirling state is uniformly spread on the inner wall surface of the whole lower hemispherical shell 52; at this time, the splashing devices 18 positioned below the height of the horizontal axis 101 are all immersed into the VOCs absorption liquid 8 in a swirling state uniformly spread on the inner wall surface of the whole lower hemispherical shell 52, and then part of the VOCs absorption liquid 8 on the inner wall of the lower hemispherical shell 52 flows into the centrifugal liquid throwing cavity 34 in the splashing devices 18 through the plurality of splashing holes 29, so that the VOCs absorption liquid is filled in the centrifugal liquid throwing cavity 34 in the splashing devices 18 below the height of the horizontal axis 101;

meanwhile, the second motor 21 is started, and then the second motor 21 can drive all the absorption liquid sputtering units 150 to rotate around the horizontal axis 101 at the rotating speed of 80r/min to 120r/min through the second output shaft 9, so that all the splashers 18 rotate continuously about the horizontal axis 101, while at the same time, since the rolling grooves 31 on the splashers 18 are also in rolling engagement with the corresponding annular rolling tracks 17.1 on the annular disc 17, so that the roller 30 on the splash guard 18 will continue to roll along the annular rolling track 17.1 on the annular disc 17, therefore, all the rollers 30 can rotate continuously along the axes thereof while rotating around the horizontal axis 101, and in the process that the rollers 30 rotate continuously along the axes thereof, the swirl promoting vanes 35 can drive the VOCs absorption liquid filled in the centrifugal liquid throwing cavity 34 to rotate together, so that the VOCs absorption liquid in the centrifugal liquid throwing cavity 34 forms a continuous centrifugal force; when the splash device 18 rotates to the upper part of the spherical shell-shaped waste gas washing and absorbing channel 19 along the horizontal axis 101, the VOCs absorbing liquid originally filled in the centrifugal liquid-throwing cavity 34 of the splash device 18 can splash out in the form of water spray through the plurality of spraying holes 29 under the action of centrifugal force generated by spinning rotation, so that the upper part of the whole spherical shell-shaped waste gas washing and absorbing channel 19 is continuously filled with a large amount of VOCs absorbing liquid water sprays which are interwoven and splashed with each other, and as all the splash devices 18 generate continuous rotating and surging action on the gas in the spherical shell-shaped waste gas washing and absorbing channel 19 in the process of rotating around the horizontal axis 101, the VOCs-containing waste gas flowing through the spherical shell-shaped waste gas washing and absorbing channel 19 forms a rotational flow rotating along the horizontal axis 101, so that the VOCs-containing waste gas in the spherical shell-shaped waste gas washing and absorbing channel 19 is fully contacted with the absorbing liquid water sprays in a large area, and the rotating airflow increases the airflow stroke, so that the absorption process is more thorough, VOCs in the waste gas containing the VOCs are fully dissolved and absorbed in the absorption liquid, the effect of purifying the gas is achieved, and the concentration of the VOCs in the finally discharged waste gas is reduced.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. A clean system for absorption of VOCs volatile gases which characterized in that: the device comprises a lower hemispherical shell (52) and an upper hemispherical shell (51), wherein the upper end contour (62) of the lower hemispherical shell (52) is coaxially and rotationally matched with the lower end contour (61) of the upper hemispherical shell (51) through a horizontal first sealing bearing (63);

the combination of the lower hemispherical shell (52) and the upper hemispherical shell (51) forms a whole spherical shell (100), the inside of the whole spherical shell (100) is a spherical VOCs absorption cavity, and VOCs absorption liquid (8) is arranged at the bottom of the spherical VOCs absorption cavity;

the upper hemispherical shell (51) is fixedly installed, and the lower hemispherical shell (52) can be driven by a driving device so as to enable the lower hemispherical shell (52) to rotate along the axis of the first sealing bearing (63);

when the lower hemispherical shell (52) does not rotate, the VOCs absorption liquid (8) is concentrated at the bottom in the lower hemispherical shell (52) under the action of gravity, and the VOCs absorption liquid (8) at the bottom in the lower hemispherical shell (52) is in a horizontal state; when lower hemisphere casing (52) is rotatory, VOCs absorption liquid (8) of the bottom in can driving lower hemisphere casing (52) then rotatory with the form of whirl, make whirl state VOCs absorption liquid (8) liquid level center can the undercut under the effect of centrifugal force, the inside wall face of edge lower hemisphere casing (52) outwards evenly spreads, and then the whirl liquid face that makes VOCs absorption liquid (8) is the concave spherical surface, thereby VOCs absorption liquid (8) of whirl state evenly spreads the internal face at whole lower hemisphere casing (52).

2. The purification system for the absorption of volatile gases from VOCs of claim 1, wherein: the lower half ball shell (52) is provided with a support (71), the driving device comprises a first motor (4) fixedly mounted on the support (71), a first output shaft (5) of the first motor (4) and a first sealing bearing (63) are coaxially arranged, the tail end of the first output shaft (5) is fixedly connected with the bottom end of the lower half ball shell (52) in a coaxial mode, and the rotation energy of the first output shaft (5) synchronously drives the lower half ball shell (52) to rotate.

3. The purification system for the absorption of volatile gases from VOCs of claim 1, wherein: the left end of the upper hemispherical shell (51) is integrally and coaxially communicated with a gas outlet shell (24), and the right end of the upper hemispherical shell (51) is integrally and coaxially communicated with a gas inlet shell (13); the inside of the gas leading-out shell (24) is a purified waste gas leading-out cavity (26), and the inside of the gas leading-in shell (13) is a VOCs-containing waste gas leading-in cavity (12); still including containing VOCs exhaust emission pipe (11), the derivation end intercommunication that contains VOCs exhaust emission pipe (11) contain VOCs waste gas import chamber (12), still including purified distribution discharge pipe (22), the leading-in end intercommunication of purified distribution discharge pipe (22) purified waste gas derivation chamber (26).

4. The purification system for the absorption of volatile gases from VOCs of claim 1, wherein: the gas outlet shell (24) is fixed on the support (71) through a plurality of left struts (1); the gas introduction shell (13) is fixedly connected with the support (71) through a plurality of right support posts (73).

5. The purification system for the absorption of volatile gases from VOCs of claim 1, wherein: an inner ball shell (16) is fixedly arranged in the whole ball shell (100); the center of the inner ball shell (16) is superposed with the center of the whole ball shell (100); the outer wall of interior ball casing (16) with form spherical shell form waste gas elution absorption channel (19) between the inner wall of whole ball casing (100), the left end with the axle center intercommunication of spherical shell form waste gas elution absorption channel (19) purified waste gas derives chamber (26), the right-hand member with the axle center intercommunication of spherical shell form waste gas elution absorption channel (19) contains leading-in chamber (12) of VOCs waste gas.

6. The purification system for volatile gas absorption of VOCs of claim 5, wherein: a fixed shaft (25) is coaxially arranged in the purified waste gas leading-out cavity (26), and the left end of the fixed shaft (25) is fixedly connected with the gas leading-out shell (24); the right end of the fixed shaft (25) is coaxially and fixedly connected with the left end of the inner ball shell (16).

7. The purification system for volatile gas absorption of VOCs of claim 5, wherein: a rotating sleeve (23) is rotatably sleeved on the fixed shaft (25) through a second bearing (2), a rotating head (10) is coaxially arranged in the VOCs waste gas introducing cavity (12), and a bearing sleeve (15) is fixedly arranged at the right end of the inner ball shell (16) coaxially; a horizontal second motor (21) is fixedly installed in the inner cavity (3) of the inner ball shell (16) through a motor support (6), and a second output shaft (9) of the second motor (21) is in running fit with the bearing sleeve (15) through a third sealing bearing (7); the tail end of the second output shaft (9) is coaxially and fixedly connected with the rotating head (10), and the second motor (21) drives the second output shaft (9) to rotate through the second output shaft (9);

a plurality of groups of absorbing liquid sputtering units (150) which are bent in an arc shape are distributed on the outer side of the inner ball shell (16) along the self horizontal axis (101) in a circumferential array; the left end and the right end of each group of absorption liquid sputtering units (150) are respectively a left linkage arm (20) and a right linkage arm (14), the tail ends of the left linkage arms (20) of all the absorption liquid sputtering units (150) are fixedly connected to the rotating sleeve (23), and the right linkage arms (14) of all the absorption liquid sputtering units (150) are fixedly connected to the rotating head (10);

the second motor (21) can drive a plurality of groups of absorption liquid sputtering units (150) to rotate around the horizontal axis (101) through a second output shaft (9);

each group of absorption liquid sputtering units (150) comprises a plurality of splashing devices (18), and two adjacent splashing devices (18) on each group of absorption liquid sputtering units (150) are connected through hard connecting rods (27); one splash device (18) at the leftmost end of each group of absorption liquid sputtering units (150) is connected with the left linkage arm (20), and one splash device (18) at the rightmost end of each group of absorption liquid sputtering units (150) is connected with the right linkage arm (14);

each splash device (18) comprises a hollow roller (30), a plurality of splash holes (29) are uniformly distributed and arranged in a hollow manner on the roller (30) in a circumferential array, an annular rolling groove (31) is formed in the outer wall of the middle section of each splash device (18), and a left bearing sleeve (37) and a right bearing sleeve (42) are integrally arranged at two ends of the roller (30); a central shaft (39) is coaxially arranged in the roller (30), a centrifugal liquid throwing cavity (34) is formed between the outer wall of the central shaft (39) and the inner wall of the roller (30), and the centrifugal liquid throwing cavity (34) is communicated with each splashing hole (29); a plurality of swirl promoting blades (35) are also distributed in the centrifugal liquid throwing cavity (34) in a circumferential array manner, and the length direction of each swirl promoting blade (35) is parallel to the axial direction of the rotary drum (30); the two ends of the central shaft (39) are respectively and coaxially fixedly connected with a left fixed shaft (33) and a right fixed shaft (41), and the left fixed shaft (33) and the right fixed shaft (41) are respectively in running fit with the left bearing sleeve (37) and the right bearing sleeve (42) through a left bearing (32) and a right bearing (40), so that the roller (30) can rotate around the central shaft (39);

two ends of each connecting rod (27) are respectively and fixedly connected with the right fixed shaft (41) and the left fixed shaft (33);

the left linkage arm (20) is fixedly connected with a left fixed shaft (33) on a splash device (18) at the leftmost end of the absorption liquid sputtering unit (150); the right linkage arm (14) is fixedly connected with a right fixed shaft (41) of a splash device (18) at the rightmost end of the absorption liquid sputtering unit (150);

a plurality of rings of annular discs (17) are arranged on the outer wall of the inner ball shell (16) from left to right at equal intervals, each annular disc (17) is coaxially arranged with the horizontal axis (101) of the inner ball shell (16), the inner ring of each annular disc (17) is integrally and fixedly connected with the outer wall of the inner ball shell (16), and the outer ring of each annular disc (17) is an annular rolling track (17.1);

each splash device (18) on the absorption liquid sputtering unit (150) corresponds to one annular disc (17), and the rolling groove (31) on each splash device (18) is in rolling fit with the annular rolling track (17.1) on the corresponding annular disc (17), so that the roller (30) rolls along the annular rolling track (17.1) on the annular disc (17);

the splashing devices (18) positioned below the level of the horizontal axis (101) are immersed in the VOCs absorbing liquid (8) in a swirling state which is uniformly spread on the inner wall surface of the whole lower hemispherical shell (52).

8. The absorption process according to claim 5 for a purification system for the absorption of volatile gases from VOCs: the method is characterized in that:

the preparation process comprises the following steps: introducing a proper amount of VOCs absorption liquid into the spherical shell-shaped waste gas leaching absorption channel (19), wherein the VOCs absorption liquid (8) is concentrated at the bottom of the lower hemispherical shell (52) under the action of gravity, and the liquid level of the VOCs absorption liquid (8) at the bottom of the lower hemispherical shell (52) is in a horizontal state;

exhaust gas purification path of VOCs: VOCs-containing waste gas which is lowered under the action of an external air pump or an air blower is continuously led into the VOCs-containing waste gas leading-in cavity (12) through the VOCs-containing waste gas discharge pipe (11), then the VOCs-containing waste gas leading-in cavity (12) in the VOCs-containing waste gas leading-in cavity is continuously led into the right end of the spherical shell-shaped waste gas leaching and absorbing channel (19) under the action of air pressure, VOCs gas is fully absorbed by absorption liquid in the process that the VOCs-containing waste gas gradually flows to the left end of the spherical shell-shaped waste gas leaching and absorbing channel (19) from the right end of the spherical shell-shaped waste gas leaching and absorbing channel (19), finally the absorbed and purified waste gas is continuously led into the purified waste gas leading-out cavity (26), and finally the purified waste gas is discharged through the purified gas distribution discharge pipe (22);

specific absorption process of VOCs gas:

starting a first motor (4), so that the rotation of a first output shaft (5) can synchronously drive a lower hemispherical shell (52) to rotate at a rotating speed of 150r/min to 200r/min, the rotation of the lower hemispherical shell (52) can continuously form a rotating shearing force on the bottom of the VOCs absorption liquid (8) at the bottom in the lower hemispherical shell (52), so that the VOCs absorption liquid (8) at the bottom in the lower hemispherical shell (52) rotates along with the lower hemispherical shell (52), the liquid surface center of the VOCs absorption liquid (8) in a rotational flow state can be sunken downwards under the action of centrifugal force, the edge of the VOCs absorption liquid is uniformly spread along the inner wall surface of the lower hemispherical shell (52), and the VOCs absorption liquid (8) in the rotational flow state is uniformly spread on the inner wall surface of the whole lower hemispherical shell (52); at the moment, the splash device (18) positioned below the horizontal axis (101) is immersed into VOCs absorption liquid (8) which is uniformly spread on the inner wall surface of the whole lower hemispherical shell (52) in a swirling state, and then part of the VOCs absorption liquid (8) on the inner wall of the lower hemispherical shell (52) flows into a centrifugal liquid throwing cavity (34) in the splash device (18) through a plurality of splashing holes (29), so that the centrifugal liquid throwing cavity (34) in the splash device (18) below the horizontal axis (101) is filled with the VOCs absorption liquid;

meanwhile, the second motor (21) is started, and the second motor (21) can drive all absorbing liquid sputtering units (150) to rotate around the horizontal axis (101) together at the rotating speed of 80r/min to 120r/min through the second output shaft (9), so that all splashing devices (18) can continuously rotate around the horizontal axis (101), and simultaneously, as the rolling grooves (31) on the splashing devices (18) are also in rolling fit with the corresponding annular rolling tracks (17.1) on the annular disc (17), the rollers (30) on the splashing devices (18) can continuously roll along the annular rolling tracks (17.1) on the annular disc (17), so that all the rollers (30) can continuously rotate along the axis of the rollers (17) while rotating around the horizontal axis (101), and the swirling promoting blades (35) can drive the VOCs absorbing liquid filled in the centrifugal liquid cavity (34) to continuously rotate along with the absorbing liquid in the process that the rollers (30) continuously rotate along the axis of the swirling blades (35) Rotating so that the VOCs absorption liquid in the centrifugal liquid throwing cavity (34) forms continuous centrifugal force; when the splash device (18) rotates to the upper part of the spherical shell-shaped waste gas washing and absorbing channel (19) along the horizontal axis (101), VOCs absorbing liquid originally filled in the centrifugal liquid throwing cavity (34) of the splash device (18) can be splashed out in the form of water spray jets through the plurality of splashing holes (29) under the action of centrifugal force generated by spinning rotation, so that the upper part of the whole spherical shell-shaped waste gas washing and absorbing channel (19) is continuously filled with a large amount of VOCs absorbing liquid water sprays which are interwoven and splashed with each other, and as all the splash devices (18) can also generate continuous rotating and surging action on gas in the spherical shell-shaped waste gas washing and absorbing channel (19) in the process of rotating around the horizontal axis (101), VOCs-containing waste gas flowing through the spherical shell-shaped waste gas absorbing channel (19) forms rotational flow rotating along the horizontal axis (101), so that the VOCs-containing waste gas in the spherical shell-shaped waste gas washing and absorbing channel (19) can be fully contacted with the absorbing liquid water sprays in a large area, and the rotating airflow increases the airflow stroke, so that the absorption process is more thorough, VOCs in the waste gas containing the VOCs are fully dissolved and absorbed in the absorption liquid, the effect of purifying the gas is achieved, and the concentration of the VOCs in the finally discharged waste gas is reduced.