CN111589273A - VOCs purification system and purification method in automotive interior production process - Google Patents
VOCs purification system and purification method in automotive interior production process Download PDFInfo
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- CN111589273A CN111589273A CN202010499597.4A CN202010499597A CN111589273A CN 111589273 A CN111589273 A CN 111589273A CN 202010499597 A CN202010499597 A CN 202010499597A CN 111589273 A CN111589273 A CN 111589273A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a VOCs purification system in the production process of automotive interior, which comprises a base, wherein an inclined VOCs purification cylinder is fixedly arranged above the base, a coaxial waste gas leaching and absorbing channel is arranged in the cylinder of the VOCs purification cylinder, and the lower part in the waste gas leaching and absorbing channel is an inclined ramp; the finer shower absorption liquid spray greatly increases the contact area between the gas in the waste gas shower absorption channel and the spray, so that the waste gas containing VOCs flowing through the waste gas shower absorption channel is fully contacted with the shower absorption liquid spray in a large area, the VOCs in the waste gas containing VOCs are fully dissolved and absorbed in the shower absorption liquid, the effect of purifying the gas is achieved, and the concentration of the VOCs in the finally discharged waste gas is reduced.
Description
Technical Field
The present invention belongs to the field of waste gas purification.
Background
VOCs that automotive interior spare production process discharged is organic harmful gas, VOCs gas can be dissolved in solvents such as biodiesel, silicone oil, edible oil, waste engine oil or kerosene, and then above-mentioned solvent can be regarded as the absorbent that absorbs VOCs for organic gas, current practice is that continuous circulating sprays above-mentioned absorbent in the absorption tower, then let the gaseous waste gas of VOCs flow through the absorption tower, make the gaseous a large amount of dissolution in the absorbent of VOCs in the waste gas, thereby reach the leaching and absorb the effect that reduces emission pollution, because above-mentioned absorbent has certain viscosity, hardly produce the splash that splashes in a large number at the in-process that sprays, and then cause the area of contact of gas and absorbent to be limited, thereby restricted absorption efficiency.
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 VOCs purification system and a purification method for the production process of automotive interiors, which can absorb VOCs more thoroughly.
The technical scheme is as follows: in order to achieve the purpose, the VOCs purification system in the production process of the automotive interior comprises a base, wherein an inclined VOCs purification cylinder is fixedly installed above the base, a coaxial waste gas leaching and absorbing channel is arranged in the cylinder of the VOCs purification cylinder, and the lower part in the waste gas leaching and absorbing channel is an inclined ramp;
a high-level cavity is arranged inside the inclined high end of the VOCs purification cylinder, a low-level cavity is arranged inside the inclined low end of the VOCs purification cylinder, and the high end and the low end of the waste gas leaching absorption channel are respectively communicated with the high-level cavity and the low-level cavity coaxially; the leaching absorption liquid in the high-level cavity can flow into the low-level cavity along the inclined ramp in the waste gas leaching absorption channel;
the device comprises a VOCs-containing waste gas discharge pipe, wherein a gas outlet end of the VOCs-containing waste gas discharge pipe is communicated with the upper part of the low-level cavity; the high-level cavity is communicated with the upper end of the high-level cavity through a purge gas discharge pipe.
Further, VOCs clean system of automotive interior production process, its characterized in that: the included angle formed by the axis of the VOCs purifying cylinder and the horizontal plane is 8-10 degrees
Furthermore, the washing and absorbing device further comprises a circulating pipe, one end of the circulating pipe is communicated with the lower end of the high-position cavity, the other end of the circulating pipe is communicated with the lower end of the low-position cavity, a circulating pump is further mounted on the circulating pipe, and the circulating pump continuously pumps the washing and absorbing liquid in the low-position cavity into the high-position cavity through the circulating pipe.
Furthermore, the effective solvent component in the leaching absorption liquid is biodiesel, silicone oil, edible oil, waste engine oil or kerosene.
Further, a first inner gear ring is integrally arranged on the inner wall at the high end of the waste gas leaching and absorbing channel coaxially, and a second inner gear ring is integrally arranged on the inner wall at the low end of the waste gas leaching and absorbing channel coaxially; a first central gear is coaxially arranged in the enclosing range of the first inner gear ring, and a second central gear is coaxially arranged in the enclosing range of the second inner gear ring; a central rod is coaxially arranged in the waste gas leaching absorption channel, two ends of the central rod are fixedly connected with a first central gear and a second central gear coaxially, and the first central gear, the central rod and the second central gear synchronously rotate along the axis; a motor is fixedly arranged on the base, and an output shaft of the motor is coaxially and fixedly connected with the first central gear;
a first cross-shaped gear bracket is arranged in the high-position cavity; a central bearing hole is formed in the center of the first cross-shaped gear support, the first cross-shaped gear support comprises four support tail ends, tail end bearing holes are formed in the four support tail ends of the first cross-shaped gear support, and the four tail end bearing holes are distributed in a circumferential array along the axis of the central bearing hole; the output shaft is coaxially and rotationally matched with the central bearing hole through a bearing; four gear shafts are rotatably arranged in the bearing holes at the tail ends respectively through bearings, four first planetary gears are integrally connected to the four gear shafts respectively coaxially, and the four first planetary gears are all in the enclosing range of the first inner gear ring and distributed around the first central gear; the four first planet gears are all meshed with the first sun gear and the first inner gear ring;
a second cross-shaped gear bracket is arranged in the low-position cavity; one end of the central rod is coaxially and rotatably matched with a bearing hole in the center of a second cross-shaped gear support through a bearing, the second cross-shaped gear support comprises four support tail ends, the bearing holes in the four support tail ends of the second cross-shaped gear support are respectively and rotatably provided with four second gear shafts through bearings, the four second gear shafts are respectively and coaxially and integrally connected with four second planetary gears, and the four second planetary gears are all in the enclosing range of the second inner gear ring and distributed around the second central gear; the four second planet gears are all meshed with the second sun gear and the second inner gear ring;
four planetary rods are further arranged in the waste gas leaching and absorbing channel along the length direction, and the four planetary rods are distributed on the periphery of the central rod in a circumferential array manner; one end of each planetary rod is coaxially and fixedly connected with a first planetary gear, and the other end of each planetary rod is coaxially and fixedly connected with a second planetary gear; each planetary rod can rotate along the axis of the planetary rod while rotating around the axis of the central rod; each planetary rod is also fixedly connected with a plurality of centrifugal splashing devices along the length direction; each centrifugal splash device rotates along the axis of the centrifugal splash device when revolving around the axis of the central rod along with the planetary rod; when the centrifugal splash device rotates around the axis of the central rod to the lowest position, the centrifugal splash device can scoop the leaching absorption liquid flowing downwards along the inclined ramp; the self-rotation of the centrifugal splashing device can splash the scooped leaching absorption liquid in a centrifugal mode, so that the whole waste gas leaching absorption channel is filled with splashed leaching absorption liquid water flowers.
Furthermore, the centrifugal splash device comprises a cylinder body which is coaxial with the outside of the planetary rods, one end of the cylinder body, which is close to the high-level cavity, is an open liquid inlet, one end of the cylinder body, which is close to the low-level cavity, is integrally provided with a plugging disc, and the plugging disc is coaxially fixed on the corresponding planetary rods; the section of the cylinder body close to the plugging disc is a centrifugal splashing section, and the section of the cylinder body close to the liquid inlet is a rotational flow propelling section; the inner wall of the rotational flow propelling section is integrally spirally and spirally provided with an auger rotational flow propelling blade, the self-rotation of the centrifugal splash device can enable the auger rotational flow propelling blade to propel liquid in the rotational flow propelling section to the centrifugal splash section, and the wall body of the centrifugal splash section is uniformly distributed and hollowed with a plurality of centrifugal splash holes;
the central rod is vertically connected with a plurality of groups of liquid splash dispersing thorns corresponding to the centrifugal splash device, the thorns tip ends of the liquid splash dispersing thorns correspond to the outlet of the centrifugal splash hole, and when the central rod rotates, the liquid splash dispersing thorns tip ends are not in contact with the outer wall of the centrifugal splash device; the thorn tips of the spray dispersing spines can cut off the spray of the elution absorption liquid sprayed from the centrifugal splashing holes, so that the spray of the elution absorption liquid sprayed from the centrifugal splashing holes is further dispersed into more exquisite spray of the elution absorption liquid;
the exhaust gas leaching absorption channel is characterized in that a disc-shaped blade seat is integrally and coaxially connected with the central rod at equal intervals, each disc-shaped blade seat is fixedly connected with swirl blades in a circumferential array mode around the disc-shaped blade seat, and the rotation of the central rod can drive the swirl blades to rotate along with the disc-shaped blade seat, so that a swirl rotating along the axis is formed in the exhaust gas leaching absorption channel.
Further, the transmission ratio between the first sun gear and the first planetary gears is 3: 1.
Further, a VOCs gas absorption method of a VOCs purification system in the production process of automotive interior:
the liquid circulation integral process: injecting a proper amount of leaching absorption liquid into the low-order cavity, continuously starting the circulating pump, continuously pumping the leaching absorption liquid in the low-order cavity into the high-order cavity by the circulating pump through the circulating pipe, and continuously flowing the leaching absorption liquid pumped into the high-order cavity downwards to the low-order cavity along the inclined ramp in the waste gas leaching absorption channel under the action of gravity, so that liquid flowing circulation of the whole system is formed, and stable flowing leaching absorption liquid exists on the inclined ramp at the lower part of the waste gas leaching absorption channel;
gas flow path: the exhaust fan continuously guides VOCs-containing waste gas generated in the production process of the automotive interior trim part into the low-level cavity through the VOCs-containing waste gas discharge pipe, then the gas entering the low-level cavity is continuously guided into the low end of the waste gas leaching and absorbing channel, then the VOCs in the process that the VOCs-containing waste gas entering the low end of the waste gas leaching and absorbing channel flows to the high end of the waste gas leaching and absorbing channel along the channel direction can be purified and absorbed, finally the purified and absorbed waste gas flows into the high-level cavity from the high end of the waste gas leaching and absorbing channel, and finally the absorbed and purified waste gas flowing into the high-level cavity from the high end is discharged through the purified gas discharge pipe;
absorption process of VOCs: starting the motor, so that the output shaft rotates at the rotating speed of 200r/min to 300 r/min; therefore, the first central gear, the central rod and the second central gear synchronously rotate along the axis, and the rotation of the central rod drives the rotational flow blades to rotate along with the central gear, so that the waste gas containing the VOCs in the waste gas leaching absorption channel forms a spiral airflow rotating along the axis, the flow stroke of the waste gas containing the VOCs in the waste gas leaching absorption channel is increased, and the absorption efficiency of the VOCs is improved; meanwhile, as the first central gear rotates continuously, the four planetary rods rotate along the axis of the central rod while revolving around the axis of the central rod under the transmission of a combined transmission structure consisting of the first inner gear ring, the first central gear, the four first planetary gears and the first cross-shaped gear bracket, the centrifugal sprayers on the planetary rods rotate along the axis of the central rod along with the planetary rods while revolving around the axis of the central rod, and the centrifugal sprayers just dip into the leaching absorption liquid flowing downwards along the inclined ramp when revolving around the axis of the central rod to the lowest position, so that the leaching absorption liquid flowing downwards along the inclined ramp flows into the rotational flow propelling section along the liquid inlet of the centrifugal sprayer, and the liquid in the rotational flow propelling section is propelled to the rotational flow propelling section by the auger rotational flow propelling blades due to the rotation of the centrifugal sprayers, so that the liquid inlet along the centrifugal splash device flows into the rotational flow propelling section, the leaching absorption liquid in the centrifugal splash device is rapidly and rotationally propelled to the centrifugal splash section, and the liquid propelled to the centrifugal splash section integrally rotates along with the centrifugal splash device, thereby realizing the water scooping process of the centrifugal splash device; when the centrifugal splash device rotates around the axis of the central rod to be separated from the liquid flowing on the inclined ramp upwards, the liquid in the centrifugal splash device continuously splashes out in a form of splashed liquid through the centrifugal splash holes under the action of centrifugal force formed by the self-rotation of the centrifugal splash device, so that the whole waste gas eluting absorption channel is filled with splashed eluting absorption liquid water; meanwhile, the rotating speed of the centrifugal splash device, which is rotated around the axis of the central rod under the transmission of a combined transmission structure consisting of the first inner gear ring, the first central gear, the four first planet gears and the first cross-shaped gear bracket, is less than the self-rotating speed of the central rod, so that the barbed ends of the splash dispersion thorns continuously and rapidly pass through the corresponding spraying ports of the centrifugal splash holes, and the barbed ends of the splash dispersion thorns continuously scrape the drip absorption liquid spray sprayed from the centrifugal splash holes, so that the drip absorption liquid spray sprayed from the centrifugal splash holes is further dispersed into more delicate drip absorption liquid spray, and the more delicate drip absorption liquid spray is continuously filled in the whole waste gas drip absorption channel, and the spray splashed in the waste gas drip absorption channel finally drops onto an inclined ramp again under the action of gravity and flows downwards, participating in liquid flow circulation; the contact area between the gas in the waste gas leaching absorption channel and the spray is greatly increased by the finer spray of the leaching absorption liquid, so that the waste gas containing VOCs flowing through the waste gas leaching absorption channel is fully contacted with the spray of the leaching absorption liquid in a large area, the VOCs in the waste gas containing VOCs are fully dissolved and absorbed in the leaching absorption liquid, the effect of purifying the gas is achieved, and the concentration of the VOCs in the finally discharged waste gas is reduced.
Has the advantages that: the finer shower absorption liquid spray greatly increases the contact area between the gas in the waste gas shower absorption channel and the spray, so that the waste gas containing VOCs flowing through the waste gas shower absorption channel is fully contacted with the shower absorption liquid spray in a large area, the VOCs in the waste gas containing VOCs are fully dissolved and absorbed in the shower absorption liquid, the effect of purifying the 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 cross-sectional view of the device;
fig. 3 is a schematic view of the VOCs purification cartridge shown in fig. 2 with all components inside the cartridge hidden;
FIG. 4 is a cross-sectional view of an axial view of a VOCs purification cartridge;
FIG. 5 is a view showing the structure of FIG. 2 with the external VOCs purifying cartridge housing and circulation tubes hidden;
FIG. 6 is an enlarged fragmentary view at 13 of FIG. 5;
FIG. 7 is an enlarged fragmentary view at 12 of FIG. 5;
FIG. 8 is a cross-sectional view of FIG. 7;
FIG. 9 is an enlarged fragmentary view taken at 11 of FIG. 7;
FIG. 10 is a schematic structural view of the centrifugal splash device.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 to 10 show a VOCs purification system for an automotive interior production process, which includes a base 5, an inclined VOCs purification cartridge 3 is fixedly installed above the base 5, an included angle formed between an axis of the VOCs purification cartridge 3 and a horizontal plane in this embodiment is 8 ° to 10 °, a coaxial waste gas leaching and absorbing channel 4 is formed in the cartridge of the VOCs purification cartridge 3, and the lower portion in the waste gas leaching and absorbing channel 4 is an inclined ramp 70;
a high-level cavity 19 is arranged inside the inclined high end of the VOCs purification cylinder 3, a low-level cavity 20 is arranged inside the inclined low end of the VOCs purification cylinder 3, and the high end and the low end of the waste gas leaching absorption channel 4 are respectively communicated with the high-level cavity 19 and the low-level cavity 20 coaxially; the leaching absorption liquid in the high-level cavity 19 can flow into the low-level cavity 20 along the inclined ramp 70 in the waste gas leaching absorption channel 4;
the device comprises a VOCs-containing waste gas discharge pipe 04, wherein a gas outlet end of the VOCs-containing waste gas discharge pipe 04 is communicated with the upper part of a low-level cavity 20; the gas inlet end of the purified gas discharge pipe 2 is communicated with the upper end of the high-level cavity 19;
the device also comprises a circulating pipe 7, one end of the circulating pipe 7 is communicated with the lower end of the high-position cavity 19, the other end of the circulating pipe 7 is communicated with the lower end of the low-position cavity 20, a circulating pump 6 is further installed on the circulating pipe 7, and the circulating pump 6 continuously pumps the leaching absorption liquid in the low-position cavity 20 into the high-position cavity 19 through the circulating pipe 7.
Effective solvent components in the leaching absorption liquid can be biodiesel, silicone oil, edible oil, waste engine oil or kerosene, and in the existing method, 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 to obtain an ion-in-oil (IL/O) type microemulsion as the leaching absorption liquid;
the high-end inner wall of the waste gas leaching and absorbing channel 4 is coaxially and integrally provided with a first inner gear ring 18, and the low-end inner wall of the waste gas leaching and absorbing channel 4 is coaxially and integrally provided with a second inner gear ring 23; a first central gear 16 is coaxially arranged in the enclosing range of the first inner gear ring 18, and a second central gear 21 is coaxially arranged in the enclosing range of the second inner gear ring 23; a central rod 5 is coaxially arranged in the waste gas leaching absorption channel 4, two ends of the central rod 5 are coaxially and fixedly connected with a first central gear 16 and a second central gear 21, and the first central gear 16, the central rod 5 and the second central gear 21 synchronously rotate along the axis; the base 5 is also fixedly provided with a motor 1, and an output shaft 36 of the motor 1 is coaxially and fixedly connected with the first central gear 16;
a first cross-shaped gear bracket 14 is arranged in the high-level cavity 19; a central bearing hole 39 is formed in the center of the first cross-shaped gear support 14, the first cross-shaped gear support 14 comprises four support tail ends, tail end bearing holes 38 are formed in the four support tail ends of the first cross-shaped gear support 14, and the four tail end bearing holes 38 are distributed in a circumferential array along the axis of the central bearing hole 39; the output shaft 36 is coaxially and rotationally matched with the central bearing hole 39 through which the output shaft passes through a bearing; four gear shafts 37 are rotatably arranged in the four tail end bearing holes 38 through bearings respectively, four first planetary gears 17 are integrally connected to the four gear shafts 37 coaxially respectively, and the four first planetary gears 17 are all in the enclosing range of the first inner gear ring 18 and distributed around the first central gear 16; the four first planet gears 17 are all meshed with the first sun gear 16 and the first ring gear 18;
a second cross-shaped gear bracket 15 is arranged in the low-position cavity 20; one end of the central rod 5 is coaxially and rotatably matched with a bearing hole in the center of the second cross-shaped gear support 15 through a bearing, the second cross-shaped gear support 15 comprises four support tail ends, the bearing holes in the four support tail ends of the second cross-shaped gear support 15 are respectively and rotatably provided with four second gear shafts through bearings, the four second gear shafts are respectively and coaxially and integrally connected with four second planetary gears 22, and the four second planetary gears 22 are all in the enclosing range of the second inner gear ring 23 and distributed around the second central gear 21; the four second planet gears 22 are all meshed with the second sun gear 21 and the second ring gear 23;
in the present embodiment, the first and second cross-shaped gear holders 14 and 15 have the same structure and size, the first and second planetary gears 17 and 22 have the same structure and size, the first and second sun gears 16 and 21 have the same structure and size, and the first and second ring gears 18 and 23 have the same structure and size;
four planet rods 24 are also arranged in the waste gas leaching and absorbing channel 4 along the length direction, and the four planet rods 24 are distributed around the central rod 5 in a circumferential array; one end of each planetary rod 24 is coaxially and fixedly connected with the first planetary gear 17, and the other end is coaxially and fixedly connected with the second planetary gear 22; each planetary rod 24 can rotate along the axis of the planetary rod while revolving around the axis of the central rod 5; each planet rod 24 is also fixedly connected with a plurality of centrifugal splashing devices 6 along the length direction; each centrifugal splash device 6 rotates along the axis of the centrifugal splash device when revolving around the axis of the central rod 5 along with the planet rod 24; when the centrifugal splash device 6 rotates around the axis of the central rod 5 to the lowest position, the drip washing absorption liquid flowing downwards along the inclined ramp 70 can be scooped up; the self-rotation of the centrifugal splashing device 6 can splash the scooped leaching absorption liquid in a centrifugal mode, so that the whole waste gas leaching absorption channel 4 is filled with splashed leaching absorption liquid water flowers.
The centrifugal splash device 6 comprises a cylinder 25 coaxial with the outside of the planetary rods 24, one end of the cylinder 25 close to the high-position cavity 19 is provided with an open liquid inlet 31, one end of the cylinder 25 close to the low-position cavity 20 is integrally provided with a plugging disc 27, and the plugging disc 27 is coaxially fixed on the corresponding planetary rods 24; the section of the cylinder 25 close to the plugging disc 27 is a centrifugal splashing section 25.1, and the section of the cylinder 25 close to the liquid inlet 31 is a rotational flow propelling section 25.2; the inner wall of the rotational flow propelling section 25.2 is integrally spirally and spirally provided with an auger rotational flow propelling blade 30, the rotation of the centrifugal splash device 6 can enable the auger rotational flow propelling blade 30 to propel the liquid in the rotational flow propelling section 25.2 to the centrifugal splash section 25.1, and the wall body of the centrifugal splash section 25.1 is uniformly provided with a plurality of centrifugal splash holes 26 in a hollow manner;
the central rod 5 is vertically connected with a plurality of groups of liquid splash dispersing thorns 32 corresponding to the centrifugal splash device 6, the puncturing tips 10.1 of the liquid splash dispersing thorns 32 correspond to the outlet of the centrifugal splash hole 26, and when the central rod 5 rotates, the puncturing tips 10.1 of the liquid splash dispersing thorns 32 are not contacted with the outer wall of the centrifugal splash device 6; the barbed tips 10.1 of the splash dispersion barbs 32 can scrape off the showering absorbent splash sprayed from the centrifugal splash holes 26, so that the showering absorbent splash sprayed from the centrifugal splash holes 26 is further dispersed into a finer showering absorbent splash;
the central rod 5 is further provided with disc-shaped blade seats 8 which are integrated at equal intervals and coaxially connected, the periphery of each disc-shaped blade seat 8 is fixedly connected with swirl blades 9 in a circumferential array mode, and the rotation of the central rod 5 can drive the swirl blades 9 to rotate along with the swirl blades, so that the waste gas leaching and absorbing channel 4 is internally provided with swirl rotating along the axis.
The gear ratio between the first sun gear 16 and the first planet gears 17 is 3: 1.
The working principle of the scheme is as follows:
a VOCs gas absorption method of a VOCs purification system in the production process of automotive interior and the working principle are as follows:
the liquid circulation integral process:
injecting a proper amount of leaching absorption liquid into the low-level cavity 20, continuously starting the circulating pump 6, continuously pumping the leaching absorption liquid in the low-level cavity 20 into the high-level cavity 19 by the circulating pump 6 through the circulating pipe 7, and continuously flowing the leaching absorption liquid pumped into the high-level cavity 19 downwards to the low-level cavity 20 along the inclined ramp 70 in the waste gas leaching absorption channel 4 under the action of gravity, so that liquid flowing circulation of the whole system is formed, and stable flowing leaching absorption liquid exists on the inclined ramp 70 at the lower part of the waste gas leaching absorption channel 4;
gas flow path:
the exhaust fan continuously guides the waste gas containing VOCs generated in the production process of the automotive interior trim part into the low-level cavity 20 through the VOCs-containing waste gas discharge pipe 04, then the gas entering the low-level cavity 20 is continuously guided into the low end of the waste gas leaching and absorbing channel 4, then the VOCs in the process that the waste gas containing VOCs entering the low end of the waste gas leaching and absorbing channel 4 flows to the high end of the waste gas leaching and absorbing channel 4 along the channel direction can be purified and absorbed, finally the purified and absorbed waste gas flows into the high-level cavity 19 from the high end of the waste gas leaching and absorbing channel 4, and finally the absorbed and purified waste gas flowing into the high-level cavity 19 from the high end is discharged through the purified gas discharge pipe 2;
absorption process of VOCs:
starting the motor 1, so that the output shaft 36 rotates at a rotating speed of 200r/min to 300r/min, which is only a reference rotating speed and can be specifically adjusted according to actual working conditions and specific design dimensions; therefore, the first central gear 16, the central rod 5 and the second central gear 21 synchronously rotate along the axis, the rotation of the central rod 5 drives the rotational flow blades 9 to rotate along with the rotation, so that the waste gas containing the VOCs in the waste gas eluting absorption channel 4 forms a spiral airflow rotating along the axis, the flow stroke of the waste gas containing the VOCs in the waste gas eluting absorption channel 4 is increased, and the absorption efficiency of the VOCs is improved; meanwhile, due to the continuous rotation of the first central gear 16, under the transmission of a combined transmission structure consisting of the first inner gear ring 18, the first central gear 16, the four first planet gears 17 and the first cross-shaped gear bracket 14, the four planet rods 24 rotate along the axes of the central rod 5 while revolving around the axes of the central rod 5, so that the centrifugal splashers 6 on the planet rods 24 rotate along the axes of the central rod 5 while revolving around the axes of the central rod 5, when the centrifugal splashers 6 revolve around the axes of the central rod 5 to the lowest position, the centrifugal splashers 6 are just immersed into the leaching absorption liquid flowing downwards along the inclined ramp 70, so that the leaching absorption liquid flowing downwards along the inclined ramp 70 flows into the rotational flow propulsion section 25.2 along the liquid inlet 31 of the centrifugal splashers 6, and the rotational flow of the rotational flow splashers 6 enables the auger propulsion blades 30 to rotationally stir and propel the liquid in the centrifugal splashing section 25.1, so that the leaching absorption liquid flowing into the rotational flow propelling section 25.2 along the liquid inlet 31 of the centrifugal splash device 6 is rapidly and rotationally propelled into the centrifugal splashing section 25.1, and the liquid propelled into the centrifugal splashing section 25.1 integrally rotates along with the centrifugal splash device 6, thereby realizing the water scooping process of the centrifugal splash device 6; when the centrifugal splash device 6 rotates around the axis of the central rod 5 to be separated from the liquid flowing on the inclined ramp 70 upwards, the liquid in the centrifugal splash section 25.1 of the centrifugal splash device 6 can continuously splash out in the form of splashed liquid through the plurality of centrifugal splash holes 26 under the action of centrifugal force formed by the self-rotation of the centrifugal splash device 6, so that the whole waste gas eluting absorption channel 4 is filled with splashed eluting absorption liquid water; meanwhile, the rotating speed of the centrifugal splash device 6 which is flexible to the axis of the central rod 5 to rotate around is smaller than the self-rotating speed of the central rod 5 under the transmission of the combined transmission structure formed by the first inner gear ring 18, the first central gear 16, the four first planet gears 17 and the first cross-shaped gear support 14, so that the barbed ends 10.1 of the water splash dispersion barbs 32 continuously sweep through the corresponding spraying ports of the centrifugal splash holes 26 at high speed, the barbed ends 10.1 of the water splash dispersion barbs 32 continuously sweep the showering absorption liquid water splashed from the centrifugal splash holes 26, the showering absorption liquid water splashed from the centrifugal splash holes 26 are further dispersed into finer showering absorption liquid water splashes, the finer showering absorption liquid water splashes continuously fill the whole waste gas showering absorption channel 4, and the splashed water splashed in the waste gas absorption channel 4 finally drops down to the inclined ramp 70 and flows downwards under the action of gravity, participating in liquid flow circulation; the finer shower absorption liquid spray greatly increases the contact area between the gas in the waste gas shower absorption channel 4 and the spray, so that the waste gas containing VOCs flowing through the waste gas shower absorption channel 4 is fully contacted with the shower absorption liquid spray in a large area, the VOCs in the waste gas containing VOCs are fully dissolved and absorbed in the shower 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 purified gas discharge pipe of the embodiment can also be provided with a gas-liquid separation device in the prior art, so that the discharge of finer water splash to the outside can be avoided.
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 (8)
1. The utility model provides a VOCs clean system of automotive interior production process which characterized in that: the device comprises a base (5), wherein an inclined VOCs purification cylinder (3) is fixedly mounted above the base (5), a coaxial waste gas leaching and absorbing channel (4) is arranged in the VOCs purification cylinder (3), and the lower part in the waste gas leaching and absorbing channel (4) is an inclined ramp (70);
a high-level cavity (19) is arranged inside the inclined high end of the VOCs purification cylinder (3), a low-level cavity (20) is arranged inside the inclined low end of the VOCs purification cylinder (3), and the high end and the low end of the waste gas leaching absorption channel (4) are respectively communicated with the high-level cavity (19) and the low-level cavity (20) coaxially; the leaching absorption liquid in the high-level cavity (19) can flow into the low-level cavity (20) along the inclined ramp (70) in the waste gas leaching absorption channel (4);
the device comprises a VOCs-containing waste gas discharge pipe (04), wherein the gas outlet end of the VOCs-containing waste gas discharge pipe (04) is communicated with the upper part of the low-level cavity (20); the high-level cavity (19) is characterized by further comprising a purified gas discharge pipe (2), and the gas inlet end of the purified gas discharge pipe (2) is communicated with the upper end of the high-level cavity (19).
2. The system of claim 1, wherein the purification system comprises: the included angle formed by the axis of the VOCs purifying cylinder (3) and the horizontal plane ranges from 8 degrees to 10 degrees.
3. The system of claim 1, wherein the purification system comprises: still include circulating pipe (7), the one end intercommunication of circulating pipe (7) the lower extreme of high-order cavity (19), the other end intercommunication of circulating pipe (7) the lower extreme of low-order cavity (20), still install circulating pump (6) on circulating pipe (7), circulating pump (6) pass through circulating pipe (7) will drip washing absorption liquid in low-order cavity (20) is continuously taken out to high-order cavity (19) in.
4. The system of claim 3, wherein the purification system comprises: the effective solvent component in the leaching absorption liquid is biodiesel, silicone oil, edible oil, waste engine oil or kerosene.
5. The system of claim 4, wherein the purification system comprises: a first inner gear ring (18) is coaxially and integrally arranged on the inner wall at the high end of the waste gas leaching and absorbing channel (4), and a second inner gear ring (23) is coaxially and integrally arranged on the inner wall at the low end of the waste gas leaching and absorbing channel (4); a first central gear (16) is coaxially arranged in the enclosing range of the first inner gear ring (18), and a second central gear (21) is coaxially arranged in the enclosing range of the second inner gear ring (23); a central rod (5) is coaxially arranged in the waste gas leaching absorption channel (4), two ends of the central rod (5) are fixedly connected with a first central gear (16) and a second central gear (21) coaxially, and the first central gear (16), the central rod (5) and the second central gear (21) synchronously rotate along the axis; the base (5) is also fixedly provided with a motor (1), and an output shaft (36) of the motor (1) is coaxially and fixedly connected with the first central gear (16);
a first cross-shaped gear bracket (14) is arranged in the high-position cavity (19); a central bearing hole (39) is formed in the center of the first cross-shaped gear support (14), the first cross-shaped gear support (14) comprises four support tail ends, tail end bearing holes (38) are formed in the four support tail ends of the first cross-shaped gear support (14), and the four tail end bearing holes (38) are distributed in a circumferential array mode along the axis of the central bearing hole (39); the output shaft (36) is coaxially and rotationally matched with the central bearing hole (39) through a bearing; four gear shafts (37) are rotatably arranged in the end bearing holes (38) through bearings respectively, four first planetary gears (17) are integrally connected with the four gear shafts (37) coaxially respectively, and the four first planetary gears (17) are all in the enclosing range of the first inner gear ring (18) and distributed around the first central gear (16); the four first planet gears (17) are all meshed with the first sun gear (16) and the first inner gear ring (18);
a second cross-shaped gear bracket (15) is arranged in the low-position cavity (20); one end of the central rod (5) is coaxially and rotatably matched with a bearing hole in the center of a second cross-shaped gear support (15) through a bearing, the second cross-shaped gear support (15) comprises four support tail ends, the bearing holes in the four support tail ends of the second cross-shaped gear support (15) are respectively and rotatably provided with four second gear shafts through bearings, the four second gear shafts are respectively and coaxially and integrally connected with four second planetary gears (22), and the four second planetary gears (22) are all arranged in the enclosing range of the second inner gear ring (23) and distributed around the second central gear (21); the four second planet gears (22) are all meshed with the second sun gear (21) and the second inner gear ring (23);
four planetary rods (24) are further arranged in the waste gas leaching and absorbing channel (4) along the length direction, and the four planetary rods (24) are distributed around the central rod (5) in a circumferential array; one end of each planetary rod (24) is coaxially and fixedly connected with the first planetary gear (17), and the other end of each planetary rod is coaxially and fixedly connected with the second planetary gear (22); each planetary rod (24) can rotate along the axis of the planetary rod while revolving around the axis of the central rod (5); each planet rod (24) is also fixedly connected with a plurality of centrifugal splashing devices (6) along the length direction; each centrifugal splash device (6) rotates along the axis of the centrifugal splash device when revolving around the axis of the central rod (5) along with the planetary rod (24); when the centrifugal splash device (6) rotates around the axis of the central rod (5) to the lowest position, the centrifugal splash device can scoop the leaching absorption liquid flowing downwards along the inclined ramp (70); the self-rotation of the centrifugal splashing device (6) can splash the scooped leaching absorption liquid in a centrifugal mode, so that the whole waste gas leaching absorption channel (4) is filled with splashed leaching absorption liquid water blooms.
6. The system of claim 5, wherein the purification system comprises: the centrifugal splash device (6) comprises a cylinder body (25) coaxial with the outside of the planetary rod (24), one end of the cylinder body (25) close to the high-position cavity (19) is an open liquid inlet (31), one end of the cylinder body (25) close to the low-position cavity (20) is integrally provided with a plugging disc (27), and the plugging disc (27) is coaxially fixed on the corresponding planetary rod (24); the section of the cylinder body (25) close to the plugging disc (27) is a centrifugal splashing section (25.1), and the section of the cylinder body (25) close to the liquid inlet (31) is a rotational flow propelling section (25.2); the inner wall of the rotational flow propelling section (25.2) is integrally spirally and spirally provided with an auger rotational flow propelling blade (30), the self-rotation of the centrifugal splash device (6) can enable the auger rotational flow propelling blade (30) to propel liquid in the rotational flow propelling section (25.2) to the centrifugal splash section (25.1), and the wall body of the centrifugal splash section (25.1) is uniformly provided with a plurality of centrifugal splash holes (26) in a hollow manner;
a plurality of groups of liquid splash dispersing thorns (32) corresponding to the centrifugal splash device (6) are vertically connected to the central rod (5), the puncturing tips (10.1) of the liquid splash dispersing thorns (32) correspond to the outlet of the centrifugal splash hole (26), and when the central rod (5) rotates, the puncturing tips (10.1) of the liquid splash dispersing thorns (32) are not in contact with the outer wall of the centrifugal splash device (6); the thorn tip (10.1) of the spray dispersion thorn (32) can cut off the spray of the eluting absorption liquid sprayed from the centrifugal splashing hole (26), so that the spray of the eluting absorption liquid sprayed from the centrifugal splashing hole (26) is further dispersed into more exquisite spray of the eluting absorption liquid;
the exhaust gas cleaning device is characterized in that a disc-shaped blade seat (8) is integrally and coaxially connected with the central rod (5) at equal intervals, each disc-shaped blade seat (8) is fixedly connected with swirl blades (9) in a circumferential array mode, the rotation energy of the central rod (5) drives the swirl blades (9) to rotate along with the rotation direction, and therefore swirl flow rotating along the axis is formed in the exhaust gas leaching absorption channel (4).
7. The system of claim 6, wherein the purification system comprises: the transmission ratio between the first sun gear (16) and the first planet gears (17) is 3: 1.
8. The method of claim 6 for absorbing VOCs gas in a VOCs purification system of an automotive interior manufacturing process, wherein:
the liquid circulation integral process: injecting a proper amount of leaching absorption liquid into the low-level cavity (20), continuously starting the circulating pump (6), continuously pumping the leaching absorption liquid in the low-level cavity (20) into the high-level cavity (19) through the circulating pump (7) by the circulating pump (6), and continuously flowing the leaching absorption liquid pumped into the high-level cavity (19) downwards into the low-level cavity (20) along the inclined ramp (70) in the waste gas leaching absorption channel (4) under the action of gravity, so that liquid flowing circulation of the whole system is formed, and stable flowing leaching absorption liquid exists on the inclined ramp (70) at the lower part of the waste gas leaching absorption channel (4);
gas flow path: the exhaust fan continuously guides VOCs-containing waste gas generated in the production process of automotive upholstery into the low-level cavity (20) through the VOCs-containing waste gas discharge pipe (04), then gas entering the low-level cavity (20) is continuously guided into the low end of the waste gas leaching and absorbing channel (4), then VOCs in the process that the VOCs-containing waste gas entering the low end of the waste gas leaching and absorbing channel (4) flows to the high end of the waste gas leaching and absorbing channel (4) along the channel direction can be purified and absorbed, finally the purified and absorbed waste gas flows into the high-level cavity (19) from the high end of the waste gas leaching and absorbing channel (4), and finally the absorbed and purified waste gas flowing into the high-level cavity (19) from the high end is discharged through the purified gas discharge pipe (2);
absorption process of VOCs: starting the motor (1) so as to rotate the output shaft (36) at a rotation speed of 200r/min to 300 r/min; therefore, the first central gear (16), the central rod (5) and the second central gear (21) synchronously rotate along the axis, the rotation of the central rod (5) drives the swirl vanes (9) to rotate, so that the waste gas containing VOCs in the waste gas eluting and absorbing channel (4) forms spiral airflow rotating along the axis, the flow stroke of the waste gas containing VOCs in the waste gas eluting and absorbing channel (4) is increased, and the absorbing efficiency of the VOCs is improved; meanwhile, due to the continuous rotation of the first central gear (16), under the transmission of a combined transmission structure consisting of the first inner gear ring (18), the first central gear (16), the four first planet gears (17) and the first cross-shaped gear bracket (14), the four planet rods (24) rotate along the axes of the four planet rods while revolving around the axis of the central rod (5), so that the centrifugal sprayers (6) on the planet rods (24) rotate along the axes of the four planet rods while revolving around the axis of the central rod (5), when the centrifugal sprayers (6) rotate to the lowest position around the axis of the central rod (5), the centrifugal sprayers are just immersed into the leaching absorption liquid flowing downwards along the inclined ramp (70), and the leaching absorption liquid flowing downwards along the inclined ramp (70) flows into the rotational flow propulsion section (25.2) along the liquid inlet (31) of the centrifugal sprayers (6), the autorotation of the centrifugal splash device (6) enables the auger swirl propelling blade (30) to rotate, stir and propel the liquid in the swirl propelling section (25.2) to the centrifugal splashing section (25.1), so that the rinsing absorption liquid flowing into the swirl propelling section (25.2) along the liquid inlet (31) of the centrifugal splash device (6) is rapidly rotated and propelled into the centrifugal splashing section (25.1), and the liquid propelled into the centrifugal splashing section (25.1) rotates integrally with the centrifugal splash device (6), thereby realizing the water scooping process of the centrifugal splash device (6); when the centrifugal splash device (6) rotates around the axis of the central rod (5) to be separated from the liquid flowing on the inclined ramp (70), the liquid in the centrifugal splash section (25.1) of the centrifugal splash device (6) continuously splashes out in a splashing liquid mode through the centrifugal splash holes (26) under the action of centrifugal force formed by the rotation of the centrifugal splash device (6), so that the whole waste gas rinsing absorption channel (4) is filled with splashed rinsing absorption liquid spray; meanwhile, the rotating speed of the axis of the centrifugal splash device (6) which is flexible to the central rod (5) and rotates around is smaller than the self-rotating speed of the central rod (5) under the transmission of a combined transmission structure which is composed of the first inner gear ring (18), the first central gear (16), the four first planet gears (17) and the first cross-shaped gear support (14), so that the thorn tips (10.1) of the spray dispersion thorns (32) continuously slide across the spraying ports of the corresponding centrifugal spraying holes (26) at high speed, the thorn tips (10.1) of the spray dispersion thorns (32) continuously slide off the spray absorption liquid spray sprayed from the centrifugal spraying holes (26), the spray absorption liquid spray sprayed from the centrifugal spraying holes (26) is further dispersed into more exquisite spray absorption liquid spray, and the more exquisite spray absorption liquid spray is further continuously filled in the whole waste gas spray absorption channel (4), the splashed water in the waste gas leaching absorption channel (4) finally falls onto the inclined ramp (70) again under the action of gravity and flows downwards to participate in liquid flowing circulation; the contact area between the gas in the waste gas leaching absorption channel (4) and the water bloom is greatly increased by the finer water bloom of the leaching absorption liquid, so that the VOCs-containing waste gas flowing through the waste gas leaching absorption channel (4) is fully contacted with the water bloom of the leaching absorption liquid in a large area, the VOCs in the VOCs-containing waste gas is fully dissolved and absorbed in the leaching absorption liquid, the effect of purifying the gas is achieved, and the concentration of the VOCs in the finally discharged waste gas is reduced.
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| EP0217215A2 (en) * | 1985-10-02 | 1987-04-08 | EICHHORN, Karl | Apparatus for cleaning exhaust gases |
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Application publication date: 20200828 |