CN111514707A

CN111514707A - VOCs volatile gas absorption system and absorption method

Info

Publication number: CN111514707A
Application number: CN202010520937.7A
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 VOCs volatile gas absorption system, which comprises a base, wherein a spherical shell is fixedly supported above the base through a plurality of pillars, a spherical VOCs absorption cavity is arranged inside the spherical shell, VOCs absorption liquid is arranged in the spherical VOCs absorption cavity, and a rotating mechanism is arranged in the VOCs absorption cavity; the whole absorption channels of the VOCs in the left hemisphere and the VOCs in the right hemisphere are uniformly filled with absorption liquid splash which is continuously interwoven, rotated and splashed, so that the VOCs-containing waste gas flowing through the absorption channels of the VOCs in the left hemisphere and the VOCs in the right hemisphere fully contact with the absorption liquid splash in a large area, the airflow stroke is increased by the rotating airflow, the absorption process is more thorough, the absorption efficiency is further increased by the dual-channel structure, the VOCs in the VOCs-containing waste gas are fully dissolved and absorbed in the absorption liquid, the effect of purifying gas is achieved, and the concentration of the VOCs in the finally discharged waste gas is reduced.

Description

VOCs volatile gas absorption system and absorption method

Technical Field

The invention belongs to the field of VOCs gas absorption.

Background

Because the VOCs gas can be dissolved in solvents such as biodiesel, silicone oil, edible oil, waste engine oil or kerosene, and the solvents can be used as absorbents for absorbing VOCs as organic gases, the conventional method is to continuously and circularly spray the absorbents in a rain mode in an absorption tower, and then make the waste gas containing the VOCs gas flow through the absorption tower, so that the VOCs gas in the waste gas is partially dissolved in the absorbents; the absorption efficiency of the rain method is limited, so that a structure with higher absorption efficiency needs to be designed.

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 volatile gas absorption system and a volatile gas absorption method for VOCs.

The technical scheme is as follows: in order to achieve the purpose, the VOCs volatile gas absorption system comprises a base, wherein a spherical shell is fixedly supported above the base through a plurality of supporting columns, a spherical VOCs absorption cavity is arranged inside the spherical shell, VOCs absorption liquid is arranged in the spherical VOCs absorption cavity, and a rotating mechanism is arranged in the VOCs absorption cavity.

Furthermore, a left cylindrical shell and a right cylindrical shell are respectively and coaxially and integrally connected to the left end and the right end of the spherical shell, a left waste gas inlet pipe and a right waste gas inlet pipe are respectively and coaxially arranged in the left cylindrical shell and the right cylindrical shell, a left waste gas outlet channel is formed between the left cylindrical shell and the left waste gas inlet pipe, and a right waste gas outlet channel is formed between the right cylindrical shell and the right waste gas inlet pipe;

the lower ends of the left purified gas discharge pipe and the right purified gas discharge pipe are respectively and vertically communicated with the left waste gas guide-out channel and the right waste gas guide-out channel.

Further, the rotating mechanism comprises a left hemispherical inner shell and a right hemispherical inner shell which are bilaterally symmetrical inside the spherical shell, the sphere centers of the left hemispherical inner shell and the right hemispherical inner shell are superposed with the sphere center of the spherical shell, a left hemispherical VOCs absorption channel is formed between the outer wall of the left hemispherical inner shell and the inner wall of the spherical shell, and a right hemispherical VOCs absorption channel is formed between the outer wall of the right hemispherical inner shell and the inner wall of the spherical shell;

the space between the left hemispherical inner shell and the right hemispherical inner shell forms a liquid absorbing spray falling channel; the area enclosed by the left hemispherical inner shell and the right hemispherical inner shell forms a spherical primary absorption cavity; the left end of the left hemispherical inner shell is coaxially integrated and is provided with a left air inlet cylinder coaxially, and the left air inlet cylinder is communicated with the left end of the spherical primary absorption cavity; the right end of the right hemispherical inner shell is coaxially and integrally provided with a right air inlet cylinder, and the right air inlet cylinder is communicated with the right end of the spherical primary absorption cavity; the left air inlet cylinder is rotatably sleeved with the left waste gas inlet pipe through a first bearing; the right air inlet cylinder is rotatably sleeved with the right waste gas inlet pipe through a second bearing;

the left waste gas leading-out channel is communicated with the left end of the left hemisphere VOCs absorption channel, and the right waste gas leading-out channel is communicated with the right end of the right hemisphere VOCs absorption channel; the right-hand member of left hemisphere VOCs absorbs the passageway and the left end that right hemisphere VOCs absorbed the passageway passes through jointly the splash falls the passageway intercommunication the middle part in the preliminary absorption chamber of ball form.

Furthermore, a left annular wall is integrally arranged on the inner wall of the right end of the left hemispherical inner shell along the contour, and a right annular wall is integrally arranged on the inner wall of the left end of the right hemispherical inner shell along the contour; a friction wheel is arranged between the left annular wall and the right annular wall, the axis of the friction wheel is parallel to the vertical direction, and the wheel surface of the friction wheel is simultaneously in rolling fit with the side walls of the left annular wall and the right annular wall; the rotation of the friction wheel can drive the left annular wall and the right annular wall under the driving of rolling friction force, so that the left hemispherical inner shell and the right hemispherical inner shell rotate in opposite directions and rotate at equal speed.

Further, a circular hole is coaxially arranged at the bottom of the spherical shell in a hollow mode, a concave cambered surface rotating disc is rotatably arranged in the circular hole through a third bearing, and the inner wall of the concave cambered surface rotating disc is overlapped with the spherical surface where the inner wall of the spherical shell is located; a vertical motor is further installed on the base, an output shaft of the motor is coaxially and fixedly connected with the concave cambered surface rotating disc, and the output shaft can drive the concave cambered surface rotating disc to rotate; VOCs absorption liquid is arranged at the bottom in the spherical shell, when the concave cambered surface rotating disc does not rotate, the VOCs absorption liquid is concentrated at the bottom in the spherical shell under the action of gravity, and the liquid level of the absorption liquid at the bottom in the spherical shell is in a horizontal state; when the concave cambered surface rotating disc rotates, the VOCs absorption liquid at the bottom in the spherical shell is driven to rotate in a rotational flow mode, so that the liquid surface center of the VOCs absorption liquid in a rotational flow state is sunken downwards under the action of centrifugal force, the edge of the VOCs absorption liquid is uniformly spread outwards along the inner wall surface of the lower half part of the spherical shell, the rotational flow liquid of the VOCs absorption liquid at the bottom in the spherical shell is in a concave spherical surface, and the absorption liquid in the rotational flow state is uniformly spread on the inner wall surface of the whole lower half part of the spherical shell;

a plurality of splashing device supporting piles which are distributed in a dispersing manner are uniformly distributed on the outer wall surfaces of the left hemispherical inner shell and the right hemispherical inner shell, and the tail end of each splashing device supporting pile is connected with an absorption liquid splashing device;

the absorption liquid splashing device is of a spherical barrel-shaped structure, and a plurality of splashing holes are circumferentially distributed on the periphery of the spherical barrel-shaped structure of the absorption liquid splashing device in an array manner; the opening of the barrel body of the spherical barrel-shaped structure of each absorption liquid splash device faces the spherical center of the spherical shell, and the tail end of the support pile of each splash device is fixedly connected to the bottom of the spherical barrel-shaped structure of each absorption liquid splash device coaxially;

when VOCs absorption liquid in a rotational flow state is uniformly spread on the inner wall surface of the lower half part of the whole spherical shell, the absorption liquid splashing devices of the lower half parts of the left hemispherical inner shell and the right hemispherical inner shell are immersed in the VOCs absorption liquid uniformly spread along the inner wall surface of the lower half part of the spherical shell.

Further, the lower end of the friction wheel is fixedly connected with the concave cambered surface rotating disc coaxially through a linkage shaft; the upper end of the friction wheel is coaxially provided with a blade shaft, a plurality of rotational flow blades are circumferentially distributed on the blade shaft in an array manner, and the rotational flow blades can enable the spherical primary absorption cavity to form rotating airflow along with the rotation of the blade shaft; and a plurality of pneumatic blades which are in divergent distribution are uniformly arranged on the outer wall surfaces of the left hemispherical inner shell and the right hemispherical inner shell.

Furthermore, a plurality of transversely-through left liquid leakage holes and a plurality of transversely-through right liquid leakage holes are distributed on the root parts of the left annular wall and the right annular wall in a circumferential array respectively; the right end of the left waste gas inlet pipe is in supporting connection with the left end of the spherical shell through a plurality of left brackets; the left end of the right waste gas inlet pipe is connected with the right end of the spherical shell through a plurality of right supports in a supporting manner.

Furthermore, a gas-liquid separation device is further arranged above the spherical shell, and the leading-out ends of the left purified gas discharge pipe and the right purified gas discharge pipe are communicated with the leading-in ends of the gas-liquid separation device.

Further, the absorption method of the volatile gas absorption system of the VOCs comprises the following steps:

the preparation process comprises the following steps:

introducing a proper amount of VOCs absorption liquid into the interior of the spherical shell, wherein the concave cambered surface rotating disc is in a static state, then the VOCs absorption liquid is concentrated at the bottom of the spherical shell under the action of gravity, the liquid level of the VOCs absorption liquid at the bottom of the spherical shell is in a horizontal state, and the liquid level of the VOCs absorption liquid is higher than the lowest end of the left hemispherical inner shell and the right hemispherical inner shell;

exhaust gas flow path inside the spherical housing:

under the action of an external blower, waste gas containing VOCs is continuously introduced into the spherical primary absorption cavity through the left waste gas introduction pipe and the right waste gas introduction pipe respectively, and VOCs in the waste gas containing VOCs entering the spherical primary absorption cavity are primarily absorbed by leacheate; then the waste gas containing VOCs primarily absorbed in the spherical primary absorption cavity continuously overflows into the left hemisphere VOCs absorption channel and the right hemisphere VOCs absorption channel in an equivalent manner through the absorption liquid water fall channel, the waste gas containing VOCs overflowing into the left hemisphere VOCs absorption channel and the right hemisphere VOCs absorption channel can be subjected to secondary leaching absorption by the absorption liquid more thoroughly, and finally the waste gas absorbed by secondary leaching in the left hemisphere VOCs absorption channel and the right hemisphere VOCs absorption channel respectively enters into the left waste gas guide-out channel and the right waste gas guide-out channel under the extrusion of air pressure and is finally discharged through the left purified gas discharge pipe and the right purified gas discharge pipe;

specific absorption process of VOCs gas:

the motor is started and is continuously in a running state, so that the output shaft drives the concave arc surface rotating disc to rotate at a rotating speed of 300r/min to 600r/min, the rotation of the concave arc surface rotating disc continuously forms a rapid rotating shearing force on the bottom of the VOCs absorption liquid at the bottom in the spherical shell, the VOCs absorption liquid at the bottom in the spherical shell rotates along with the concave arc surface rotating disc, the center of the liquid surface of the VOCs absorption liquid in a rotational flow state is sunken downwards under the action of centrifugal force, the edge of the VOCs absorption liquid is spread outwards and uniformly along the inner wall surface of the lower half part of the spherical shell, and the rotational flow liquid surface of the VOCs absorption liquid at the bottom in the spherical shell is a concave spherical surface, so that the absorption liquid in a rotational flow state at the bottom in the spherical shell is spread uniformly on the inner; at the moment, the absorption liquid splashing devices at the lower half parts of the left hemispherical inner shell and the right hemispherical inner shell are just immersed into the liquid level of the VOCs absorption liquid uniformly spread along the inner wall surface of the lower half part of the spherical shell;

meanwhile, the rotation of the concave cambered surface rotating disc drives the friction wheel to rotate under the linkage action of the linkage shaft, and as the transmission ratio of the friction wheel to the left annular wall/the right annular wall is 1:5, the rotation of the friction wheel drives the left annular wall and the right annular wall under the driving of rolling friction force, so that the left hemispherical inner shell and the right hemispherical inner shell rotate in opposite directions at the rotating speeds of 50r/min to 120r/min and the rotating shaft is the rotating motion of the axis of the left air inlet cylinder/the right air inlet cylinder; therefore, all the absorption liquid splashing devices rotate around the axes of the left air inlet cylinder/the right air inlet cylinder, and when the absorption liquid splashing devices are immersed in the liquid level of the VOCs absorption liquid uniformly spread along the inner wall surface of the lower half part of the spherical shell, the interior of the spherical barrel-shaped structure of the absorption liquid splashing device is filled with the VOCs absorption liquid; when the absorbing liquid splashing device is separated from the VOCs absorbing liquid spread on the inner wall surface of the lower half part of the spherical shell, the originally filled VOCs absorbing liquid in the spherical barrel-shaped structure of the absorbing liquid splashing device can be splashed out in a water splash jet mode through the plurality of splashing holes under the action of rotating centrifugal force; therefore, the upper half parts of the left hemispherical VOCs absorption channel and the right hemispherical VOCs absorption channel continuously generate a large amount of splashed absorption liquid splash, the left hemispherical inner shell and the right hemispherical inner shell continuously rotate around the axis of the left air inlet cylinder/the right air inlet cylinder, so that all the pneumatic blades can rotate along with the left air inlet cylinder/the right air inlet cylinder, and then the gas in the left hemispherical VOCs absorption channel and the right hemispherical VOCs absorption channel and the splashed absorption liquid are used for rotating along the axis of the left air inlet cylinder/the right air inlet cylinder by the rotating surging action of the plurality of pneumatic blades, so that the whole left hemispherical VOCs absorption channel and the whole right hemispherical VOCs absorption channel are uniformly filled with the absorption liquid splash which is continuously interwoven, rotated and splashed, the waste gas containing VOCs and flowing through the left hemispherical VOCs absorption channel and the right hemispherical VOCs absorption channel is fully contacted with the absorption liquid splash in a large area, and the airflow stroke is increased by the rotating airflow, the absorption process is more thorough, and the absorption efficiency is further increased by the double-channel structure, so that VOCs in the waste gas containing VOCs are fully dissolved and absorbed in the absorption liquid, the effect of purifying gas is achieved, and the concentration of VOCs in the finally discharged waste gas is reduced; a part of splashed absorption liquid spray finally strikes the inner wall of the spherical shell and then slides downwards along the inner wall of the spherical shell to the bottom under the action of gravity; because the rotating directions of the left hemispherical inner shell and the right hemispherical inner shell are opposite, the gas swirling directions in the left hemispherical VOCs absorption channel and the right hemispherical VOCs absorption channel are also opposite, so that the two side swirls at the falling channel of the absorption liquid splash are mutually offset, a part of the absorption liquid splash which is mutually interwoven at the falling channel of the absorption liquid splash continuously and stably falls into the spherical primary absorption cavity, the rotational vane rotates along with the vane shaft to form a rotating airflow in the spherical primary absorption cavity, and the absorption liquid splash falling into the spherical primary absorption cavity through the falling channel of the absorption liquid splash continuously and stably moves downwards under the combined action of the rotational striking of the rotational vane and the rotating airflow in the spherical primary absorption cavity to finally return to the bottom in the spherical shell again, so that the spirally falling splash is continuously formed in the spherical primary absorption cavity, the plump water of spiral can be to the preliminary abundant absorption of VOCs in the gaseous waste that contains VOCs in the preliminary absorption chamber of ball form, and the plump water of spiral is all big than area of contact and the gas stroke that sprays in traditional formula of drenching with the rain, and then can improve the absorption rate of preliminary absorption.

Has the advantages that: the whole absorption channels of the VOCs in the left hemisphere and the VOCs in the right hemisphere are uniformly filled with absorption liquid splash which is continuously interwoven, rotated and splashed, so that the VOCs-containing waste gas flowing through the absorption channels of the VOCs in the left hemisphere and the VOCs in the right hemisphere fully contact with the absorption liquid splash in a large area, the airflow stroke is increased by the rotating airflow, the absorption process is more thorough, the absorption efficiency is further increased by the dual-channel structure, the VOCs in the VOCs-containing waste gas are fully dissolved and absorbed in the absorption liquid, the effect of purifying gas is achieved, and the concentration of the VOCs in the finally discharged waste gas is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the device;

FIG. 2 is a first cross-sectional view of the present device;

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

FIG. 4 is a schematic front sectional view of the apparatus;

FIG. 5 is a schematic view of a sphere structure inside a spherical shell;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural view of a vane shaft, a swirl vane and a friction wheel;

FIG. 8 is a schematic structural view of an absorption liquid splashing device.

Detailed Description

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

The system for absorbing volatile gases from VOCs as shown in fig. 1 to 8 comprises a base 90, wherein a spherical shell 6 is fixedly supported above the base 90 through a plurality of pillars 28, a spherical VOCs absorption cavity is formed inside the spherical shell 6, and VOCs absorption liquid is arranged in the spherical VOCs absorption cavity, effective solvent components in the VOCs absorption liquid of the embodiment can be biodiesel, silicone oil, edible oil, waste engine oil or kerosene, the above solvent components can effectively dissolve VOCs organic gas, in the prior art, a small amount of hydrophilic ionic liquid can be uniformly dispersed in a large amount of biodiesel in a dispersed phase form under the action of a nonionic surfactant and a cosurfactant, so as to obtain ion liquid in oil (IL/O) microemulsion as eluting absorption liquid;

the left end and the right end of the spherical shell 6 are respectively and coaxially and integrally connected with a left cylindrical shell 25 and a right cylindrical shell 26, a left waste gas inlet pipe 1 and a right waste gas inlet pipe 11 are respectively and coaxially arranged in the left cylindrical shell 25 and the right cylindrical shell 26, a left waste gas outlet channel 22 is formed between the left cylindrical shell 25 and the left waste gas inlet pipe 1, and a right waste gas outlet channel 12 is formed between the right cylindrical shell 26 and the right waste gas inlet pipe 11;

the device also comprises a left purified gas discharge pipe 2 and a right purified gas discharge pipe 10, wherein the lower ends of the left purified gas discharge pipe 2 and the right purified gas discharge pipe 10 are respectively and vertically communicated with a left waste gas guide-out channel 22 and a right waste gas guide-out channel 12.

The VOCs absorption cavity of the embodiment is internally provided with a rotating mechanism; the rotating mechanism comprises a left hemispherical inner shell 4 and a right hemispherical inner shell 8 which are bilaterally symmetrical inside a spherical shell 6, the spherical centers of the left hemispherical inner shell 4 and the right hemispherical inner shell 8 are coincided with the spherical center of the spherical shell 6, a left hemispherical VOCs absorption channel 21 is formed between the outer wall of the left hemispherical inner shell 4 and the inner wall of the spherical shell 6, and a right hemispherical VOCs absorption channel 13 is formed between the outer wall of the right hemispherical inner shell 8 and the inner wall of the spherical shell 6;

the space between the left hemispherical inner shell 4 and the right hemispherical inner shell 8 forms an absorption liquid and water fall channel 52; the sphere-shaped primary absorption cavity 14 is formed in the area enclosed by the left hemispherical inner shell 4 and the right hemispherical inner shell 8; the left end of the left hemispherical inner shell 4 is integrated with the same axis as the center of the axle and is provided with a left air inlet cylinder 45, and the left air inlet cylinder 45 is communicated with the left end of the spherical primary absorption cavity 14; the right end of the right hemispherical inner shell 8 is coaxially and integrally provided with a right air inlet cylinder 46, and the right air inlet cylinder 46 is communicated with the right end of the spherical primary absorption cavity 14; the left air inlet cylinder 45 is rotatably sleeved with the left waste gas inlet pipe 1 through a first bearing 43; the right air inlet cylinder 46 is rotatably sleeved with the right exhaust gas inlet pipe 11 through a second bearing 44;

the left waste gas guide-out channel 22 is communicated with the left end of the left hemisphere VOCs absorption channel 21, and the right waste gas guide-out channel 12 is communicated with the right end of the right hemisphere VOCs absorption channel 13; the right end of the left hemisphere VOCs absorption channel 21 and the left end of the right hemisphere VOCs absorption channel 13 are communicated with the middle part of the spherical primary absorption cavity 14 through a splash falling channel 52.

The inner wall of the right end of the left hemispherical inner shell 4 is integrally provided with a left annular wall 20 along the outline, and the inner wall of the left end of the right hemispherical inner shell 8 is integrally provided with a right annular wall 15 along the outline; a friction wheel 7 is arranged between the left annular wall 20 and the right annular wall 15, the axis of the friction wheel 7 is parallel to the vertical direction, and the wheel surface of the friction wheel 7 is simultaneously in rolling fit with the side walls of the left annular wall 20 and the right annular wall 15; the rotation of the friction wheel 7 drives the left annular wall 20 and the right annular wall 15 under the driving of rolling friction force, so that the left hemispherical inner shell 4 and the right hemispherical inner shell 8 rotate in opposite directions and at equal rotation speeds.

The bottom of the spherical shell 6 is coaxially provided with a circular hole 100 in a hollow mode, a concave cambered surface rotating disc 17 is rotatably arranged in the circular hole 100 through a third bearing 36, and the inner wall of the concave cambered surface rotating disc 17 is overlapped with the spherical surface where the inner wall of the spherical shell 6 is located; the base 90 is also provided with a vertical motor 18, an output shaft 27 of the motor 18 is fixedly connected with the concave cambered surface rotating disc 17 coaxially, and the output shaft 27 can drive the concave cambered surface rotating disc 17 to rotate; the VOCs absorption liquid 33 is arranged at the bottom in the spherical shell 6, when the concave cambered surface rotating disc 17 does not rotate, the VOCs absorption liquid 33 is concentrated at the bottom in the spherical shell 6 under the action of gravity, and the liquid level of the absorption liquid at the bottom in the spherical shell 6 is in a horizontal state; when the concave arc surface rotating disc 17 rotates, the VOCs absorption liquid 33 at the bottom in the spherical shell 6 is driven to rotate in a rotational flow mode, so that the liquid surface center of the VOCs absorption liquid 33 in a rotational flow state is sunken downwards under the action of centrifugal force, the edge of the VOCs absorption liquid is uniformly spread outwards along the inner wall surface of the lower half part of the spherical shell 6, the rotational flow liquid surface of the VOCs absorption liquid 33 at the bottom in the spherical shell 6 is a concave spherical surface, and the absorption liquid in the rotational flow state is uniformly spread on the inner wall surface of the lower half part of the whole spherical shell 6;

a plurality of spray device supporting piles 29 which are distributed in a divergent shape are uniformly distributed on the outer wall surfaces of the left hemispherical inner shell 4 and the right hemispherical inner shell 8, and the tail end of each spray device supporting pile 29 is connected with an absorption liquid spray device 9;

the absorption liquid splashing device 9 is of a spherical barrel-shaped structure, and a plurality of splashing holes 31 are circumferentially distributed on the periphery of the spherical barrel-shaped structure of the absorption liquid splashing device 9 in an array manner; the opening 30 of the barrel body of the spherical barrel-shaped structure of each absorption liquid splash device 9 faces the center of the sphere of the spherical shell 6, and the tail end of the splash device supporting pile 29 is fixedly connected with the bottom of the spherical barrel-shaped structure of the absorption liquid splash device 9 coaxially;

when the VOCs absorption liquid 33 in the swirling state is uniformly spread on the inner wall surface of the lower half part of the whole spherical shell 6, the absorption liquid splashing devices 9 of the lower half parts of the left hemispherical inner shell 4 and the right hemispherical inner shell 8 are immersed in the VOCs absorption liquid 33 uniformly spread along the inner wall surface of the lower half part of the spherical shell 6.

The lower end of the friction wheel 7 is fixedly connected with the concave cambered surface rotating disc 17 through a linkage shaft 19 coaxially; the upper end of the friction wheel 7 is coaxially provided with a blade shaft 3, a plurality of swirl blades 23 are circumferentially distributed on the blade shaft 3 in an array manner, and each swirl blade 23 can form rotating airflow in the spherical primary absorption cavity 14 along with the rotation of the blade shaft 3; a plurality of pneumatic blades 5 which are distributed divergently are also evenly arranged on the outer wall surfaces of the left hemispherical inner shell 4 and the right hemispherical inner shell 8.

The roots of the left annular wall 20 and the right annular wall 15 are respectively distributed with a plurality of transversely through left weep holes 41 and a plurality of transversely through right weep holes 42 in a circumferential array; the right end of the left waste gas inlet pipe 1 is in supporting connection with the left end of the spherical shell 6 through a plurality of left brackets 61; the left end of the right exhaust gas inlet pipe 11 is connected with the right end of the spherical shell 6 through a plurality of right brackets 62.

A gas-liquid separation device 24 is arranged above the spherical shell 6, and the leading-out ends of the left purified gas discharge pipe 2 and the right purified gas discharge pipe 10 are communicated with the leading-in end of a gas-liquid separation device 26.

The working principle of the scheme is as follows:

VOCs absorption method of VOCs volatile gas absorption system:

the preparation process comprises the following steps:

introducing a proper amount of VOCs absorption liquid into the spherical shell 6, wherein the concave cambered surface rotating disc 17 is in a static state, then the VOCs absorption liquid 33 is concentrated at the bottom in the spherical shell 6 under the action of gravity, the liquid level of the VOCs absorption liquid 33 at the bottom in the spherical shell 6 is in a horizontal state, and the liquid level of the VOCs absorption liquid 33 is higher than the lowest ends of the left hemispherical inner shell 4 and the right hemispherical inner shell 8;

exhaust gas flow path inside the spherical housing 6:

under the action of an external blower, waste gas containing VOCs is continuously introduced into the spherical primary absorption cavity 14 through the left waste gas introduction pipe 1 and the right waste gas introduction pipe 11 respectively, and the VOCs in the waste gas containing VOCs entering the spherical primary absorption cavity 14 are primarily absorbed by leacheate; then the waste gas containing VOCs primarily absorbed in the spherical primary absorption cavity 14 continuously overflows into the left hemisphere VOCs absorption channel 21 and the right hemisphere VOCs absorption channel 13 in equal amount through the absorption liquid water fall channel 52, the waste gas containing VOCs overflowing into the left hemisphere VOCs absorption channel 21 and the right hemisphere VOCs absorption channel 13 is subjected to second leaching absorption by the absorption liquid more thoroughly, and finally the waste gas absorbed by the second leaching in the left hemisphere VOCs absorption channel 21 and the right hemisphere VOCs absorption channel 13 enters the left waste gas guide channel 22 and the right waste gas guide channel 12 under the extrusion of air pressure respectively and is finally discharged through the left purified gas discharge pipe 2 and the right purified gas discharge pipe 10;

specific absorption process of VOCs gas:

the motor 18 is started and is continuously in a running state, so that the output shaft 27 drives the concave arc surface rotating disc 17 to rotate at a rotating speed of 300r/min to 600r/min, the rotation of the concave arc surface rotating disc 17 continuously forms a rapid rotating shearing force on the bottom of the VOCs absorption liquid 33 at the bottom in the spherical shell 6, so that the VOCs absorption liquid 33 at the bottom in the spherical shell 6 rotates along with the concave arc surface rotating disc 17, the liquid surface center of the VOCs absorption liquid 33 in a rotational flow state is sunken downwards under the action of centrifugal force, the edge of the VOCs absorption liquid is uniformly spread outwards along the inner wall surface of the lower half part of the spherical shell 6, the rotational flow liquid surface of the VOCs absorption liquid 33 at the bottom in the spherical shell 6 is a concave spherical surface, and the absorption liquid in the rotational flow state at the bottom in the spherical shell 6 is uniformly spread on the inner wall surface of the lower half part of; at the moment, the absorption liquid splashing devices 9 at the lower half parts of the left hemispherical inner shell 4 and the right hemispherical inner shell 8 are just immersed in the liquid level of the VOCs absorption liquid 33 uniformly spread along the inner wall surface of the lower half part of the spherical shell 6;

meanwhile, the rotation of the concave cambered surface rotating disc 17 can drive the friction wheel 7 to rotate under the linkage action of the linkage shaft 19, and as the transmission ratio of the friction wheel 7 to the left annular wall 20/the right annular wall 15 is 1:5, the rotation of the friction wheel 7 can drive the left annular wall 20 and the right annular wall 15 under the driving of rolling friction force, so that the left hemispherical inner shell 4 and the right hemispherical inner shell 8 are in rotary motion with opposite rotary directions, the rotating speeds of 50r/min to 120r/min and the rotating shaft being the axis of the left air inlet cylinder/the right air inlet cylinder; therefore, all the absorption liquid splashing devices 9 rotate around the axes of the left air inlet cylinder/the right air inlet cylinder, and when the absorption liquid splashing devices 9 are immersed in the liquid level of the VOCs absorption liquid 33 uniformly spread along the inner wall surface of the lower half part of the spherical shell 6, the interior of the spherical barrel-shaped structure of the absorption liquid splashing devices 9 is filled with the VOCs absorption liquid; when the absorbing liquid splash device 9 is separated from the VOCs absorbing liquid 33 spread on the inner wall surface of the lower half part of the spherical shell 6, the originally filled VOCs absorbing liquid in the spherical barrel-shaped structure of the absorbing liquid splash device 9 can splash out in the form of splash jet through the plurality of splash holes 31 under the action of rotating centrifugal force; therefore, the upper half parts of the left hemispherical VOCs absorption channel 21 and the right hemispherical VOCs absorption channel 13 continuously generate a large amount of splashed absorption liquid splash, the left hemispherical inner shell 4 and the right hemispherical inner shell 8 continuously rotate around the axis of the left air inlet cylinder/the right air inlet cylinder, so that all the air moving blades 5 can rotate along with the air moving blades, and the air and the splashed absorption liquid in the left hemispherical VOCs absorption channel 21 and the right hemispherical VOCs absorption channel 13 jointly perform the rotation motion along the axis of the left air inlet cylinder/the right air inlet cylinder under the rotation surging action of the plurality of air moving blades 5, so that the whole left hemispherical VOCs absorption channel 21 and the whole right hemispherical VOCs absorption channel 13 are uniformly filled with the absorption liquid splash which is continuously interwoven, rotated and splashed, and the waste gas containing VOCs flowing through the left hemispherical VOCs absorption channel 21 and the right hemispherical VOCs absorption channel 13 is fully contacted with the absorption liquid splash in a large area, the rotating airflow increases the airflow stroke, so that the absorption process is more thorough, and the absorption efficiency is further increased by the dual-channel structure, so that VOCs in the waste gas containing VOCs are fully dissolved and absorbed in the absorption liquid, the effect of purifying the gas is achieved, and the concentration of VOCs in the finally discharged waste gas is reduced; a part of splashed absorption liquid splash can finally hit the inner wall of the spherical shell 6 and then slide downwards along the inner wall of the spherical shell 6 to the bottom under the action of gravity; because the rotating directions of the left hemispherical inner shell 4 and the right hemispherical inner shell 8 are opposite, the gas swirling directions in the left hemispherical VOCs absorbing channel 21 and the right hemispherical VOCs absorbing channel 13 are also opposite, so that the two side swirls at the absorbing liquid splash falling channel 52 are offset, a part of the absorbing liquid splash which is interwoven with the absorbing liquid splash falling channel 52 continuously and stably falls downwards into the spherical primary absorbing cavity 14, a rotating airflow is formed in the spherical primary absorbing cavity 14 due to the rotation of the swirling vanes 23 along with the vane shaft 3, and the absorbing liquid splash falling into the spherical primary absorbing cavity 14 through the absorbing liquid splash falling channel 52 falls downwards under the combined action of the rotating impact of the swirling vanes 23 and the rotating airflow in the spherical primary absorbing cavity 14 and finally returns to the bottom in the spherical shell 6 again, thereby continuously form the water bloom that the spiral descends in making ball form preliminary absorption chamber 14, the water bloom that the spiral descends can be to the preliminary abundant absorption of VOCs in the waste gas that contains VOCs in the ball form preliminary absorption chamber 14, and the water bloom that the spiral descends compares in the area of contact and the gas stroke that traditional rain formula sprayed all will be big, and then can improve preliminary absorbing absorption rate.

The above is only a preferred embodiment 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

VOCs volatile gas absorption system which characterized in that: including base (90), the top of base (90) has ball casing (6) through a plurality of pillars (28) fixed stay, the inside of ball casing (6) is the VOCs absorption chamber of ball form, the VOCs absorption intracavity of ball form is provided with the VOCs absorption liquid, just the VOCs absorption intracavity is provided with rotary mechanism.
2. A volatile gas absorption system for VOCs as recited in claim 1, wherein: the left end and the right end of the spherical shell (6) are respectively and coaxially and integrally connected with a left cylindrical shell (25) and a right cylindrical shell (26), a left waste gas inlet pipe (1) and a right waste gas inlet pipe (11) are respectively and coaxially arranged in the left cylindrical shell (25) and the right cylindrical shell (26), a left waste gas outlet channel (22) is formed between the left cylindrical shell (25) and the left waste gas inlet pipe (1), and a right waste gas outlet channel (12) is formed between the right cylindrical shell (26) and the right waste gas inlet pipe (11);

the device also comprises a left purified gas discharge pipe (2) and a right purified gas discharge pipe (10), wherein the lower ends of the left purified gas discharge pipe (2) and the right purified gas discharge pipe (10) are respectively and vertically communicated with a left waste gas guide channel (22) and a right waste gas guide channel (12).
3. A volatile gas absorption system for VOCs as recited in claim 1, wherein: the rotary mechanism comprises a left hemispherical inner shell (4) and a right hemispherical inner shell (8) which are bilaterally symmetrical inside a spherical shell (6), the sphere centers of the left hemispherical inner shell (4) and the right hemispherical inner shell (8) are superposed with the sphere center of the spherical shell (6), a left hemispherical VOCs absorption channel (21) is formed between the outer wall of the left hemispherical inner shell (4) and the inner wall of the spherical shell (6), and a right hemispherical VOCs absorption channel (13) is formed between the outer wall of the right hemispherical inner shell (8) and the inner wall of the spherical shell (6);

the space between the left hemispherical inner shell (4) and the right hemispherical inner shell (8) forms a liquid absorbing spray falling channel (52); the area enclosed by the left hemispherical inner shell (4) and the right hemispherical inner shell (8) forms a spherical primary absorption cavity (14); the left end of the left hemispherical inner shell (4) is coaxially integrated with the center of a shaft and is coaxially provided with a left air inlet cylinder (45), and the left air inlet cylinder (45) is communicated with the left end of the spherical primary absorption cavity (14); the right end of the right hemispherical inner shell (8) is coaxially and integrally provided with a right air inlet cylinder (46), and the right air inlet cylinder (46) is communicated with the right end of the spherical primary absorption cavity (14); the left air inlet cylinder (45) is rotatably sleeved with the left waste gas inlet pipe (1) through a first bearing (43); the right air inlet cylinder (46) is rotatably sleeved with the right exhaust gas inlet pipe (11) through a second bearing (44);

the left waste gas guide-out channel (22) is communicated with the left end of the left hemisphere VOCs absorption channel (21), and the right waste gas guide-out channel (12) is communicated with the right end of the right hemisphere VOCs absorption channel (13); the right end of the left hemisphere VOCs absorbing channel (21) and the left end of the right hemisphere VOCs absorbing channel (13) are communicated with the middle of the spherical primary absorbing cavity (14) through the water splash falling channel (52).
4. A volatile gas absorption system for VOCs as recited in claim 3, wherein: the inner wall of the right end of the left hemispherical inner shell (4) is integrally provided with a left annular wall (20) along the outline, and the inner wall of the left end of the right hemispherical inner shell (8) is integrally provided with a right annular wall (15) along the outline; a friction wheel (7) is arranged between the left annular wall (20) and the right annular wall (15), the axis of the friction wheel (7) is parallel to the vertical direction, and the wheel surface of the friction wheel (7) is simultaneously in rolling fit with the side walls of the left annular wall (20) and the right annular wall (15); the rotation of the friction wheel (7) can drive the left annular wall (20) and the right annular wall (15) under the driving of rolling friction force, so that the left hemispherical inner shell (4) and the right hemispherical inner shell (8) do rotary motion with opposite rotating directions and equal rotating speed.
5. A volatile gas absorption system for VOCs as recited in claim 3, wherein: the bottom of the spherical shell (6) is coaxially provided with a circular hole (100) in a hollow mode, a concave cambered surface rotating disc (17) is rotatably arranged in the circular hole (100) through a third bearing (36), and the inner wall of the concave cambered surface rotating disc (17) is overlapped with the spherical surface where the inner wall of the spherical shell (6) is located; a vertical motor (18) is further mounted on the base (90), an output shaft (27) of the motor (18) is coaxially and fixedly connected with the concave cambered surface rotating disc (17), and the output shaft (27) can drive the concave cambered surface rotating disc (17) to rotate; VOCs absorption liquid (33) is arranged at the bottom in the spherical shell (6), when the concave cambered surface rotating disc (17) does not rotate, the VOCs absorption liquid (33) is concentrated at the bottom in the spherical shell (6) under the action of gravity, and the liquid surface of the absorption liquid at the bottom in the spherical shell (6) is in a horizontal state; when the concave arc surface rotating disc (17) rotates, the VOCs absorption liquid (33) at the bottom in the spherical shell (6) can be driven to rotate in a rotational flow mode, the liquid surface center of the VOCs absorption liquid (33) 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 outwards along the inner wall surface of the lower half part of the spherical shell (6), and then the rotational flow liquid surface of the VOCs absorption liquid (33) at the bottom in the spherical shell (6) is a concave spherical surface, so that the absorption liquid in the rotational flow state is uniformly spread on the inner wall surface of the lower half part of the whole spherical shell (6);

a plurality of splashing device supporting piles (29) which are distributed in a divergent shape are uniformly distributed on the outer wall surfaces of the left hemispherical inner shell (4) and the right hemispherical inner shell (8), and the tail end of each splashing device supporting pile (29) is connected with an absorption liquid splashing device (9);

the absorption liquid splashing device (9) is of a spherical barrel-shaped structure, and a plurality of splashing holes (31) are circumferentially distributed around the spherical barrel-shaped structure of the absorption liquid splashing device (9) in an array manner; the opening (30) of the barrel body of the spherical barrel-shaped structure of each absorption liquid splash device (9) faces to the spherical center of the spherical shell (6), and the tail end of the splash device supporting pile (29) is fixedly connected to the bottom of the spherical barrel-shaped structure of the absorption liquid splash device (9) coaxially;

when VOCs absorption liquid (33) in a rotational flow state is uniformly spread on the inner wall surface of the lower half part of the whole spherical shell (6), the absorption liquid splashing devices (9) of the lower half parts of the left hemispherical inner shell (4) and the right hemispherical inner shell (8) are immersed in the VOCs absorption liquid (33) uniformly spread along the inner wall surface of the lower half part of the spherical shell (6).
6. A volatile gas absorption system for VOCs according to claim 5 wherein: the lower end of the friction wheel (7) is fixedly connected with the concave cambered surface rotating disc (17) through a linkage shaft (19) coaxially; the upper end of the friction wheel (7) is coaxially provided with a blade shaft (3), a plurality of cyclone blades (23) are circumferentially distributed on the blade shaft (3) in an array manner, and the rotation of each cyclone blade (23) along with the blade shaft (3) can enable the spherical primary absorption cavity (14) to form rotating airflow; and a plurality of pneumatic blades (5) which are in divergent distribution are uniformly arranged on the outer wall surfaces of the left hemispherical inner shell (4) and the right hemispherical inner shell (8).
7. A volatile gas absorption system for VOCs according to claim 5 wherein: the root parts of the left annular wall (20) and the right annular wall (15) are respectively distributed with a plurality of transversely through left liquid leakage holes (41) and a plurality of transversely through right liquid leakage holes (42) in a circumferential array manner; the right end of the left waste gas inlet pipe (1) is in supporting connection with the left end of the spherical shell (6) through a plurality of left brackets (61); the left end of the right waste gas inlet pipe (11) is in supporting connection with the right end of the spherical shell (6) through a plurality of right brackets (62).
8. A volatile gas absorption system for VOCs as recited in claim 1, wherein: a gas-liquid separation device (24) is further arranged above the spherical shell (6), and the leading-out ends of the left purified gas discharge pipe (2) and the right purified gas discharge pipe (10) are communicated with the leading-in end of the gas-liquid separation device (26).
9. A method of absorbing VOCs in a volatile gas absorption system for VOCs as recited in claim 8, wherein:

the preparation process comprises the following steps:

introducing a proper amount of VOCs absorption liquid into the interior of the spherical shell (6), wherein the concave cambered surface rotating disc (17) is in a static state, then the VOCs absorption liquid (33) is concentrated at the bottom of the spherical shell (6) under the action of gravity, the liquid level of the VOCs absorption liquid (33) at the bottom of the spherical shell (6) is in a horizontal state, and the liquid level of the VOCs absorption liquid (33) is higher than the heights of the lowest ends of the left hemispherical inner shell (4) and the right hemispherical inner shell (8);

exhaust gas flow path inside the spherical housing (6):

under the action of an external blower, waste gas containing VOCs is continuously led into the spherical primary absorption cavity (14) through the left waste gas inlet pipe (1) and the right waste gas inlet pipe (11), and the VOCs in the waste gas containing the VOCs entering the spherical primary absorption cavity (14) can be primarily absorbed by leacheate; then the waste gas containing VOCs primarily absorbed in the spherical primary absorption cavity (14) continuously overflows into the left hemisphere VOCs absorption channel (21) and the right hemisphere VOCs absorption channel (13) in equal quantity through the absorption liquid water bloom falling channel (52), the waste gas containing VOCs overflowing into the left hemisphere VOCs absorption channel (21) and the right hemisphere VOCs absorption channel (13) is subjected to second leaching absorption by the absorption liquid more thoroughly, and finally the waste gas absorbed by second leaching in the left hemisphere VOCs absorption channel (21) and the right hemisphere VOCs absorption channel (13) respectively enters the left waste gas guide channel (22) and the right waste gas guide channel (12) under the extrusion of air pressure and is finally discharged through the left purified gas discharge pipe (2) and the right purified gas discharge pipe (10);

specific absorption process of VOCs gas:

the motor (18) is started and is in a running state continuously, so that the output shaft (27) drives the concave cambered surface rotating disc (17) to rotate at the rotating speed of 300r/min to 600r/min, the rotation of the concave cambered surface rotating disc (17) can continuously form a rapid rotating shearing force to the bottom of the VOCs absorption liquid (33) at the bottom in the spherical shell (6), so that the VOCs absorption liquid (33) at the bottom in the spherical shell (6) rotates along with the concave cambered surface rotating disc (17), the liquid surface center of the VOCs absorption liquid (33) in the rotational flow state can be sunken downwards under the action of centrifugal force, the edge is uniformly spread outwards along the inner wall surface of the lower half part of the spherical shell (6), thereby leading the rotational flow liquid surface of the VOCs absorption liquid (33) at the bottom in the spherical shell (6) to be a concave spherical surface, so that the absorption liquid in the bottom rotational flow state in the spherical shell (6) is uniformly spread on the inner wall surface of the lower half part of the whole spherical shell (6); at the moment, the absorption liquid splashing devices (9) at the lower half parts of the left hemispherical inner shell (4) and the right hemispherical inner shell (8) are just immersed into the liquid level of the VOCs absorption liquid (33) uniformly spread along the inner wall surface of the lower half part of the spherical shell (6);

meanwhile, the rotation of the concave cambered surface rotating disc (17) can drive the friction wheel (7) to rotate under the linkage action of the linkage shaft (19), and as the transmission ratio of the friction wheel (7) to the left annular wall (20)/the right annular wall (15) is 1:5, the rotation of the friction wheel (7) can drive the left annular wall (20) and the right annular wall (15) under the driving of rolling friction force, the left hemispherical inner shell (4) and the right hemispherical inner shell (8) are driven to rotate in opposite directions at the rotating speeds of 50r/min to 120r/min, and the rotating shaft is the rotating motion of the axis of the left air inlet cylinder/the right air inlet cylinder; therefore, all the absorption liquid splashing devices (9) rotate around the axes of the left air inlet cylinder/the right air inlet cylinder, and when the absorption liquid splashing devices (9) are immersed in the liquid level of the VOCs absorption liquid (33) uniformly spread along the inner wall surface of the lower half part of the spherical shell (6), the interior of the spherical barrel-shaped structure of the absorption liquid splashing devices (9) can be filled with the VOCs absorption liquid; when the absorbing liquid splash device (9) is separated from VOCs absorbing liquid (33) spread on the inner wall surface of the lower half part of the spherical shell (6), the originally filled VOCs absorbing liquid in the spherical barrel-shaped structure of the absorbing liquid splash device (9) can splash out in a spray jet mode through a plurality of splashing holes (31) under the action of rotating centrifugal force; thereby make the first half of left hemisphere VOCs absorption passageway (21) and right hemisphere VOCs absorption passageway (13) all continuously produce the absorbent solution splash that a large amount of splashes, because left hemisphere interior casing (4) and right hemisphere interior casing (8) are continuously rotatory around the axis of left air inlet tube/right air inlet tube, and then make all pneumatic blades (5) all follow and rotate, and then the rotatory motion of surging the action of a plurality of pneumatic blades (5) with making the gas in left hemisphere VOCs absorption passageway (21) and right hemisphere VOCs absorption passageway (13) and the absorbent solution that splashes do the rotary motion along left air inlet tube/right air inlet tube axis jointly, thereby make all evenly full of in whole left hemisphere VOCs absorption passageway (21) and right hemisphere VOCs absorption passageway (13) and continuously interweave, the absorbent solution splash of rotation, thereby make the waste gas that contains VOCs that flows through left hemisphere VOCs absorption passageway (21) and right hemisphere VOCs absorption passageway (13) fully contact with the absorbent solution splash in a large tracts of land The rotating airflow increases the airflow stroke, so that the absorption process is more thorough, and the absorption efficiency is further increased by the dual-channel structure, so that VOCs in the waste gas containing VOCs are fully dissolved and absorbed in the absorption liquid, the effect of purifying the gas is achieved, and the concentration of VOCs in the finally discharged waste gas is reduced; a part of splashed absorption liquid splash can hit the inner wall of the spherical shell (6) finally, and then slides downwards along the inner wall of the spherical shell (6) to the bottom under the action of gravity; because the rotating directions of the left hemispherical inner shell (4) and the right hemispherical inner shell (8) are opposite, the gas swirling directions in the left hemispherical VOCs absorption channel (21) and the right hemispherical VOCs absorption channel (13) are also opposite, so that the swirling flows at two sides of the absorption liquid splash falling channel (52) are mutually offset, a part of the absorption liquid splash which is mutually interwoven at the absorption liquid splash falling channel (52) continuously and stably falls into the spherical primary absorption cavity (14), and the absorption liquid splash falling into the spherical primary absorption cavity (14) through the absorption liquid splash falling channel (52) forms rotating airflow in the spherical primary absorption cavity (14) along with the rotation of the blade shaft (3), so that the absorption liquid splash falling into the spherical primary absorption cavity (14) through the absorption liquid splash falling channel (52) falls into left spiral falling movement under the comprehensive action of the rotating impact of the swirling blades (23) and the rotating airflow in the spherical primary absorption cavity (14), get back to the bottom in ball casing (6) again finally to continuously form the decurrent splash of spiral in making ball form primary absorption chamber (14), the decurrent splash of spiral can be to the preliminary abundant absorption of VOCs in the waste gas that contains VOCs in the ball form primary absorption chamber (14), the decurrent splash of spiral is all big in area of contact and the gas stroke that traditional formula of drenching with the rain sprayed, and then can improve the absorption rate of primary absorption.