CN110624461A - Water-based UV coating process system, process method thereof and coating formula - Google Patents
Water-based UV coating process system, process method thereof and coating formula Download PDFInfo
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- CN110624461A CN110624461A CN201910902228.2A CN201910902228A CN110624461A CN 110624461 A CN110624461 A CN 110624461A CN 201910902228 A CN201910902228 A CN 201910902228A CN 110624461 A CN110624461 A CN 110624461A
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- 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
- B01D53/007—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 irradiation
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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
- B01D53/18—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
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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Abstract
The invention discloses a water-based UV coating process system, which comprises a dispersion system and an air purification system; the air purification system comprises a purification well, a suction device and an end cover; the purification well is buried in the ground of the workshop; the end cover is arranged at the top of the purification well in a matching way; the end caps are free to move in a vertical direction; the suction device comprises a pipeline and a collector; the collectors are distributed in the surrounding space of the dispersion system; the end cover is provided with an air inlet and an air outlet; one end of the pipeline is communicated with the collector, and the other end of the pipeline is communicated and butted with the air inlet; the purification well can be maintained and operated by lifting the end cover; meanwhile, in the waste gas treatment link, solid filtering devices needing frequent cleaning are all placed in the end covers, so that cleaning and maintenance can be efficiently and quickly completed, and maintenance is simplified; meanwhile, the purification effect of waste gas is obviously enhanced by combining multiple filtering, spraying, absorbing, photolysis and burning steps.
Description
Technical Field
The invention relates to the field of coating process, in particular to a water-based UV coating process system, a process method and a coating formula thereof.
Background
The collection and treatment of waste gas in the production of coating materials are always technical problems to be solved. The traditional waste gas treatment device matched with coating production equipment only has a simple filtering function and cannot really achieve standard emission of waste gas. Therefore, the invention is necessary to invent a water-based UV coating process system which has comprehensive waste gas treatment function and is simple to maintain.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the water-based UV coating process system which is comprehensive in waste gas treatment function and simple to maintain.
The technical scheme is as follows: in order to achieve the purpose, the water-based UV coating process system comprises a dispersion system and an air purification system; the air purification system comprises a purification well, a suction device and an end cover; the purification well is buried in the ground of the workshop; the end cover is arranged at the top of the purification well in a matching way; the end caps are free to move in a vertical direction; the suction device comprises a pipeline and a collector; the collectors are distributed in the surrounding space of the dispersion system; the end cover is provided with an air inlet and an air outlet; one end of the pipeline is communicated with the collector, and the other end of the pipeline is communicated and butted with the air inlet;
a spraying cavity is arranged in the purification well; a first unit cavity is arranged in the end cover; a first filter screen group is arranged in the first unit cavity; one end of the spraying cavity, which is far away from the first filter screen group, is communicated with the gas outlet; the first unit cavity is communicated with the air inlet; the top of the inner wall of the spraying cavity is provided with a plurality of spray heads along the length direction of the spray heads; the injection paths of the plurality of spray heads correspond to the exhaust gas circulation path; the spraying cavity bottom is provided with a first liquid discharge pipe in a communicating mode.
Furthermore, a second unit cavity is arranged in the end cover; a first conveying pipe is communicated between the second unit cavity and the spraying cavity; an absorption cavity is arranged in the purification well; the absorption cavity is filled with absorption liquid; a second liquid discharge pipe is communicated with the bottom of the absorption cavity; a second conveying pipe is communicated between the second unit cavity and the absorption cavity; the first conveying pipe and the second conveying pipe are respectively arranged on two opposite side wall surfaces of the second unit cavity; a drying device is arranged in the second unit cavity; the drying device comprises a shell and a water absorbing material; the shell is of a hollow cake-shaped structure; a plurality of air holes are formed in the shell; the water absorbing material is filled in the shell; the shells are arranged along the circulation direction of the waste gas and are arranged at intervals; a material changing port is arranged at the edge of the shell; the edge of the shell is coated with an arc-shaped groove; a material leakage port is formed at the bottom of the arc-shaped groove; a recovery cavity is also arranged in the second unit cavity; the recovery cavity is correspondingly arranged below the shell and is communicated with the material leakage port; a rod piece is arranged at the center of the shell in a penetrating and connecting mode; the length direction of the rod piece is consistent with the arrangement direction of the plurality of shells.
Furthermore, one end of the second liquid discharge pipe, which is far away from the absorption cavity, is communicated with a circulating device; the circulating device comprises a preheating chamber, a transfer chamber and a fractionator; the input end of the preheating chamber is in butt joint with a second liquid discharge pipe; the output end of the preheating chamber is communicated with the inlet end of the fractionator; the outlet end of the fractionator is communicated with the inlet end of the transfer chamber; the outlet end of the transfer chamber is communicated with the inlet end of the absorption cavity.
Furthermore, a third unit cavity is also arranged in the end cover; a third conveying pipe is communicated between the absorption cavity and the third unit cavity; a photolysis chamber is arranged in the purification well; an ultraviolet lamp tube group is arranged in the photolysis chamber; a fourth conveying pipe is communicated between the third unit cavity and the photolysis chamber; the interfaces of the third conveying pipe, the fourth conveying pipe and the third unit cavity are respectively arranged on two side wall surfaces opposite in position; a second filter screen group is arranged in the third unit cavity;
the second filter screen group comprises a filter screen piece, a support frame and a sealing frame; a plurality of filter screen sheets are arranged between the interfaces of the third conveying pipe and the fourth conveying pipe at intervals in parallel; the support frame comprises a separation blade and a rotating shaft; the separation blades are clamped between adjacent filter screen sheets; the surface of the separation blade is provided with bristles; the rotating shaft penetrates through the filter screen sheet and is connected with the center of the support frame; and rotating the support frame to drive the separation blade to synchronously rotate.
Further, the ultraviolet lamp tube group comprises a bearing rod, a sliding rod, a first sleeve and a second sleeve; the first sleeve and the second sleeve are of net structures, and are provided with light through holes in a hollow manner; the bearing rod is fixedly arranged on the inner wall of the photolysis chamber; two ends of the bearing rod along the length direction respectively correspond to the third conveying pipe and the fourth conveying pipe in position; the sliding rods are arranged above the bearing rods in parallel; the first sleeve is correspondingly nested and matched with the bearing rod along the length direction of the first sleeve; the second sleeve is correspondingly nested and matched with the bearing rod along the length direction of the second sleeve; an embedded groove is formed in the end face, close to the first sleeve, of the second sleeve; the sliding rod penetrates through the first sleeve and is fixedly embedded into the embedded groove; a first lamp tube is arranged in the first sleeve; a second lamp tube is arranged in the second sleeve; one end of the first lamp tube close to the second lamp tube is electrically connected with a power supply connector; and pulling the slide bar to drive the second sleeve to move synchronously, and switching the connection state with the power supply connector.
Further, the ultraviolet lamp tube group also comprises a heat exchange shell; the two heat exchange shells are respectively arranged in the first sleeve and the second sleeve; the heat exchange shell comprises a first shell layer, a first spiral pipe and a second shell layer; the first spiral pipe is clamped between the first shell layer and the second shell layer; the heat exchange shell is made of quartz glass; the first spiral pipe is provided with a circulating pump and a second spiral pipe in an extending mode; the second spiral pipe is arranged in the heat-conducting inner wall of the preheating chamber.
Furthermore, a fourth unit cavity is also arranged in the end cover; the gas outlet end of the photolysis chamber is communicated with the gas inlet end of the fourth unit cavity through a fifth conveying pipe; the air outlet is formed in one side, far away from the fifth conveying pipe, of the fourth unit cavity; a sixth conveying pipe is connected to the air outlet; a straight discharge pipe is communicated with the sixth conveying pipe; one end of the sixth conveying pipe, which is far away from the fourth unit cavity, corresponds to the flame jet orifice; the sixth conveying pipe is also provided with an exhaust pump and an air entraining valve in a communicating way; the side of the bleed valve facing away from the sixth transport pipe is exposed to the outside air.
Further, the process method of the water-based UV coating process system comprises the following steps,
step one, starting an exhaust pump, enabling waste collected in an intake device to enter a first unit cavity, then enabling the waste to pass through a first filter screen group, reserving larger-particle solid dust in the first unit cavity, and enabling the rest part of the larger-particle solid dust to enter a spraying cavity;
secondly, spraying water on the waste flow path by a spray head in the spraying cavity to absorb water-soluble substances in the waste flow path, and then discharging the water-soluble substances out of the purification well through a first liquid discharge pipe at the bottom of the cavity to facilitate subsequent water quality purification treatment;
step three, the waste gas after spraying treatment enters a second unit cavity through a first conveying pipe; when the waste gas meets the drying device, the waste gas can pass through the air holes on the surfaces of the plurality of layers of shells, and the moisture in the waste gas can be removed by the water-absorbing materials in the shells, such as water-absorbing silica gel particles and the like;
when the water absorption material is close to saturation, the rod piece is rotated to drive the shell to synchronously rotate; the material changing port corresponds to the material leaking port in the rotating process, and the nearly saturated water absorbing material falls downwards into a recovery drawer in the recovery cavity, so that uniform and periodic dumping is facilitated; the rod piece is continuously rotated along with the hand, so that the material changing port returns to the position which is upward initially, and then new water absorbing material is continuously added into the shell;
step four, the dried waste gas enters an absorption cavity through a second conveying pipe, absorption liquid such as gasoline is contained in the absorption cavity, and organic pollutants in the waste gas can be dissolved;
during the working process of the absorption cavity, part of absorption liquid enters the preheating chamber from the second discharge pipe, then enters the fractionating chamber to separate the absorption liquid from organic pollutants in the absorption liquid, the recovered pure absorption liquid is conveyed into the transfer chamber, and then the absorption liquid in the transfer chamber is continuously conveyed back into the absorption cavity through the return pipe according to the flow rate of waste gas;
step five, the waste gas treated by the absorption cavity enters a third unit cavity through a third conveying pipe; when the waste gas passes through the second filter screen group, fine solid impurities in the waste gas can be intercepted by the filter screen sheets, so that a secondary filtering process of solid particles is realized;
when the solid pollutants accumulated on the filter screen piece influence the circulation of waste gas, the rotating shaft is rotated to drive the partition leaves to rotate, and the bristles on the partition leaves can scrape the solid pollutants on the filter screen piece, so that the good circulation of the screen surface is ensured;
step six, the waste gas after secondary filtration enters a photolysis chamber through a fourth conveying pipe; the ultraviolet lamp tube group can effectively decompose pollutants such as malodorous substances in the waste gas through the dual functions of ultraviolet rays and ozone;
according to the difference of the waste gas flow, the connection condition of the second lamp tube in the second sleeve can be controlled by pushing and pulling the sliding rod, so that the waste of excessive light sources is avoided; when the lamp tube works, the heat in the lamp tube is conducted to the flowing liquid in the first spiral tube, and the conducting liquid carries the heat to the second spiral tube, so that the heating function of the preheating chamber in the fourth step is realized, and the aim of saving energy is fulfilled;
seventhly, allowing the photolyzed waste gas to enter a fourth unit cavity through a fifth conveying pipe; a waste gas quality detection device is arranged in the fourth unit cavity; if the waste gas reaches the emission standard, opening a valve corresponding to the straight exhaust pipe, and discharging the waste gas out of the air purification system; if the waste gas does not reach the emission standard, opening a corresponding valve of the sixth conveying pipe, and discharging the waste gas after combustion; in the combustion process, the opening degree of the air-entraining valve can be adjusted, so that the air and the waste gas are doped in a certain proportion before combustion, and the optimal combustion treatment effect is achieved.
Has the advantages that: the water-based UV coating process system comprises a dispersion system and an air purification system; the air purification system comprises a purification well, a suction device and an end cover; the purification well is buried in the ground of the workshop; the end cover is arranged at the top of the purification well in a matching way; the end caps are free to move in a vertical direction; the suction device comprises a pipeline and a collector; the collectors are distributed in the surrounding space of the dispersion system; the end cover is provided with an air inlet and an air outlet; one end of the pipeline is communicated with the collector, and the other end of the pipeline is communicated and butted with the air inlet; the purification well can be maintained and operated by lifting the end cover; meanwhile, in the waste gas treatment link, solid filtering devices needing frequent cleaning are all placed in the end covers, so that cleaning and maintenance can be efficiently and quickly completed, and maintenance is simplified; meanwhile, the purification effect of waste gas is obviously enhanced by combining multiple filtering, spraying, absorbing, photolysis and burning steps.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a process system;
FIG. 2 is a schematic diagram of the working principle of the air purification system;
FIG. 3 is a schematic view of the drying apparatus;
FIG. 4 is a schematic view of the operation principle of the circulation device;
FIG. 5 is a schematic view of a second screen pack configuration;
FIG. 6 is a schematic view showing the construction of a fourth unit chamber exhaust apparatus;
FIG. 7 is a schematic view of the sleeve connection remote;
fig. 8 is a schematic view of a heat exchange structure of an ultraviolet lamp tube set.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The water-based UV coating process system is shown in the attached figure 1 and comprises a dispersion system and an air purification system 2; the air purification system 2 comprises a purification well 3, a suction device 4 and an end cover 5; the purifying well 3 is buried in the ground of the workshop and is used as a matched device of a paint production workshop; the underground installation can save the space of a workshop, and has better installation stability and higher reliability; the end cover 5 is arranged at the top of the purifying well 3 in a matching way; the end cover 5 freely moves in the vertical direction, and the maintenance operation can be carried out on the purification well 3 by lifting the end cover 5; meanwhile, in the waste gas treatment link, solid filtering devices needing frequent cleaning are all placed in the end cover 5, so that cleaning and maintenance can be efficiently and quickly completed; the suction device 4 comprises a pipeline 41 and a collector 42; the collectors 42 are distributed in the space around the dispersion system 1, such as embedded in the floor and wall of a workshop, and timely absorb the generated waste gas and solid particles from the workshop; the end cover 5 is provided with an air inlet 501 and an air outlet 502; one end of the pipeline 41 is communicated with the collector 42, and the other end of the pipeline is communicated and butted with the air inlet 501;
as shown in fig. 2, a spraying cavity 31 is arranged in the purification well 3, and soluble gas and solid impurities in the waste gas can be quickly cleaned by spraying; a first unit cavity 51 is arranged in the end cover 5; a first filter screen group 511 is arranged in the first unit cavity 51; the first filter screen group 511 can intercept solid particles with larger particle sizes before spraying, so that the subsequent treatment pressure is reduced; one end of the spraying cavity 31 far away from the first filter screen group 511 is communicated with the air outlet 502; the first unit chamber 51 communicates with the intake port 501; a plurality of spray heads 311 are arranged at the top of the inner wall of the spray cavity 31 along the length direction of the spray heads; the injection paths of the plurality of spray heads 311 correspond to the exhaust gas circulation paths; the bottom of the spraying cavity 31 is provided with a first liquid discharge pipe 312 in a communicating manner, and the generated waste liquid can be discharged from the first liquid discharge pipe 312 and enter a subsequent sewage treatment process;
as shown in fig. 2, the end cap 5 is further provided with a second unit cavity 52; a first conveying pipe 401 is communicated between the second unit cavity 52 and the spraying cavity 31; an absorption cavity 32 is arranged in the purification well 3; the absorption cavity 32 is filled with absorption liquid, and the absorption cavity 32 is filled with absorption liquid such as gasoline, so that organic pollutants in the waste gas can be dissolved; a second liquid discharge pipe 321 is communicated with the bottom of the absorption cavity 32; a second conveying pipe 402 is communicated between the second unit cavity 52 and the absorption cavity 32; the first delivery pipe 401 and the second delivery pipe 402 are respectively arranged on two opposite side wall surfaces of the second unit cavity 52; a drying device 521 is arranged in the second unit cavity 52; as shown in fig. 3, the drying device 521 includes a housing 522 and a water absorbing material; the housing 522 is a hollow pie-shaped structure, facilitating filling and rotation; a plurality of air holes 524 are formed in the shell 522; the water absorbing material is filled in the shell 522, specifically, water absorbing silica gel particles and the like can be adopted, and water can be taken out again for repeated use after the water absorbing material is saturated; the plurality of shells 522 are arranged along the exhaust gas circulation direction and are arranged at intervals; a material changing port 525 is arranged at the edge of the shell 522; an arc-shaped groove 526 is formed at the edge of the shell 522 in a wrapping mode; the bottom of the arc-shaped groove 526 is provided with a material leakage port 527; a recycling cavity 528 is also arranged in the second unit cavity 52; the recovery cavity 528 is correspondingly arranged below the shell 522 and is communicated with the material leakage port 527; a rod member 529 is arranged at the center of the shell 522 in a penetrating and connecting mode; the length direction of the rod member 529 is identical to the arrangement direction of the plurality of housings 522.
One end of the second liquid discharge pipe 321 far away from the absorption cavity 32 is communicated with a circulating device 6; as shown in fig. 4, the circulation device 6 includes a preheating chamber 61, a transfer chamber 62 and a fractionator 63; the input end of the preheating chamber 61 is butted with a second liquid discharge pipe 321; the output end of the preheating chamber 61 is communicated with the inlet end of the fractionator 63; the outlet end of the fractionator 63 is communicated with the inlet end of the transfer chamber 62; the outlet end of the transfer chamber 62 communicates with the inlet end of the absorption chamber 32; in the working process of the circulating device 6, part of the absorption liquid enters the preheating chamber 61 from the second discharge pipe 321, then enters the fractionating chamber 63 to separate the absorption liquid from organic pollutants in the absorption liquid, the recovered pure absorption liquid is conveyed into the transfer chamber 62, and then the absorption liquid in the transfer chamber 62 is continuously conveyed back into the absorption cavity 32 through the return pipe 322 according to the circulation amount of the waste gas, so that the dynamic stability of the absorption amount of the absorption liquid can be realized, the step of integral replacement during parking in the traditional equipment is omitted, and the working efficiency and the fluency of the system are greatly improved;
as shown in fig. 2, a third unit cavity 53 is further arranged in the end cover 5; a third delivery pipe 403 is communicated between the absorption cavity 32 and the third unit cavity 53; a photolysis chamber 33 is arranged in the purification well 3; an ultraviolet lamp tube group 8 is arranged in the photolysis chamber 33; the ultraviolet lamp tube group 8 can effectively decompose pollutants such as malodorous substances in the waste gas through the dual functions of ultraviolet rays and ozone; a fourth delivery pipe 404 is communicated between the third unit cavity 53 and the photolysis chamber 33; the interfaces of the third delivery pipe 403, the fourth delivery pipe 404 and the third unit cavity 53 are respectively arranged on two side wall surfaces opposite in position; a second filter screen group 7 is arranged in the third unit cavity 53;
as shown in fig. 5, the second filter screen group 7 includes a filter screen sheet 71, a support frame 72 and a sealing frame 73; a plurality of filter screen sheets 71 are arranged between the joints of the third delivery pipe 403 and the fourth delivery pipe 404 at intervals in parallel; the supporting frame 72 comprises a partition 721 and a rotating shaft 722; the partition 721 is interposed between the adjacent filter sheets 71; bristles are arranged on the surface of the separation blade 721; the rotating shaft 722 penetrates through the filter screen piece 71 and is connected with the center of the support frame 72; the supporting frame 72 is rotated to drive the partition blades 721 to rotate synchronously, and the bristles on the partition blades 721 can scrape off solid pollutants on the filter screen sheets 721 to ensure good circulation of the screen surfaces; in addition, the pore diameter of the second filter screen group is smaller than that of the first filter screen group; the pore diameters of the filter mesh sheets 721 are gradually reduced along the direction of exhaust gas flow; thereby fully utilizing each layer of filter screen sheet;
as shown in fig. 7, the ultraviolet lamp tube group 8 includes a bearing rod 81, a sliding rod 82, a first sleeve 83 and a second sleeve 84; the first sleeve 83 and the second sleeve 84 are of a net structure and are provided with light through holes in a hollow manner; the bearing rod 81 is fixedly arranged on the inner wall of the photolysis chamber 33; two ends of the bearing rod 81 along the length direction respectively correspond to the third delivery pipe 403 and the fourth delivery pipe 404; the sliding rod 82 is arranged above the bearing rod 81 in parallel; the first sleeve 83 is correspondingly nested and matched with the bearing rod 81 along the length direction of the first sleeve; the second sleeve 84 is correspondingly nested and matched with the bearing rod 81 along the length direction; a caulking groove 842 is formed in the end face, close to the first sleeve 83, of the second sleeve 84; the sliding rod 82 penetrates through the first sleeve 83 and is fixedly embedded in the embedding groove 842; a first lamp tube 85 is arranged in the first sleeve 83; a second lamp tube 86 is arranged in the second sleeve 84; one end of the first lamp tube 85 close to the second lamp tube 86 is electrically connected with a power supply connector 87; the sliding rod 82 is pulled to drive the second sleeve 84 to move synchronously, and the connection state of the second sleeve and the power supply connector 87 is switched, so that the waste of excessive light sources is avoided;
the ultraviolet lamp tube group 8 further comprises a heat exchange shell 88; two pieces of the heat exchange shell 88 are respectively arranged in the first sleeve 83 and the second sleeve 84; as shown in fig. 8, the heat exchange housing 88 includes a first shell 881, a first coil 882 and a second shell 883; the first volute 882 is sandwiched between the first shell 881 and the second shell 883; the heat exchange shell 88 is made of quartz glass; a circulating pump and a second spiral pipe extend from the first spiral pipe 882; the second spiral pipe is arranged in the heat conducting inner wall of the preheating chamber 61, so that the heat emitted by the lamp tube is fully utilized, the energy consumed by the fractionating chamber is reduced, and the energy-saving effect is remarkable.
A fourth unit cavity 54 is also arranged in the end cover 5; the gas outlet end of the photolysis chamber 33 is communicated with the gas inlet end of the fourth unit cavity 54 through a fifth delivery pipe 405; the air outlet 502 is arranged on the side of the fourth unit chamber 54 away from the fifth delivery pipe 405; as shown in fig. 6, a sixth delivery pipe 406 is connected to the air outlet 502; a straight discharge pipe 541 is communicated with the sixth conveying pipe 406; one end of the sixth delivery pipe 406 far away from the fourth unit cavity 54 corresponds to the position of the flame jet orifice; the sixth delivery pipe 406 is also provided with an exhaust pump 542 and a bleed valve 543 in a communication manner; the side of the bleed valve 542 facing away from the sixth transport pipe 406 is exposed to the ambient air; a waste gas quality detection device is arranged in the fourth unit cavity 54, and the detection device can be directly purchased and obtained from the market; if the exhaust gas reaches the emission standard, opening a valve corresponding to the direct exhaust pipe 541, and discharging the exhaust gas out of the air purification system 2; if the waste gas does not reach the emission standard, opening a corresponding valve of the sixth delivery pipe 406, and discharging the waste gas after combustion; in the combustion process, the opening degree of the air bleed valve 542 can be adjusted, so that the air and the waste gas are doped in a certain proportion before combustion, and the optimal combustion treatment effect is achieved; in the actual production process, operators can master the influence of different coating types, production time and other factors on the standard reaching condition of the waste gas at the sixth conveying pipe through the experience of multiple working of the air purification system, so that rapid empirical judgment can be carried out, and the system operation efficiency is further improved; and the gas emission safety is ensured by matching with a related detection device.
The process method of the water-based UV coating process system comprises the following steps,
step one, starting an exhaust pump 542, enabling waste collected in the suction device 4 to enter the first unit cavity 51, then enabling the waste to pass through the first filter screen group 511, wherein the larger-particle solid dust is reserved in the first unit cavity 51, and the rest part of the larger-particle solid dust enters the spraying cavity 31;
secondly, the spray nozzle 311 in the spray cavity 31 sprays water on the waste flow path to absorb water-soluble substances therein, and then the water-soluble substances are discharged out of the purification well through the first liquid discharge pipe 312 at the bottom of the cavity, so that the subsequent water quality purification treatment is facilitated;
step three, the waste gas after the spraying treatment enters the second unit cavity 52 through the first conveying pipe 401; when the exhaust gas meets the drying device 521, the exhaust gas passes through the air holes 524 on the surface of the plurality of layers of the shell 522, and the moisture in the exhaust gas is removed by the water-absorbing material in the shell, such as water-absorbing silica gel particles and the like;
when the water absorbing material is close to saturation, the rod member 529 is rotated to drive the shell 522 to synchronously rotate; the material changing port 525 corresponds to the material leakage port 527 in the rotating process, and the nearly saturated water absorbing material in the material changing port is dropped downwards into the recovery drawer 530 in the recovery cavity 528, so that uniform and regular dumping is facilitated; the rod member 529 is continuously rotated by hand to enable the material changing port 525 to return to the initial upward position, and then new water absorbing materials are continuously added into the shell 522;
step four, the dried waste gas enters the absorption cavity 32 through the second delivery pipe 402, and absorption liquid such as gasoline is filled in the absorption cavity 32, so that organic pollutants in the waste gas can be dissolved;
during the operation of the absorption chamber 32, part of the absorption liquid enters the preheating chamber 61 from the second discharge pipe 321, and then enters the fractionating chamber 63 to separate the absorption liquid from the organic pollutants therein, and the recovered pure absorption liquid is conveyed into the intermediate chamber 62, and then the absorption liquid in the intermediate chamber 62 is continuously conveyed back into the absorption chamber 32 through the return pipe 322 according to the flow rate of the exhaust gas;
step five, the exhaust gas treated by the absorption cavity 32 enters the third unit cavity 53 through the third delivery pipe 403; when the waste gas passes through the second filter screen group 7, the fine solid impurities in the waste gas can be intercepted by the filter screen sheets 71, so that the secondary filtering process of solid particles is realized;
when the solid pollutants accumulated on the filter screen 71 affect the circulation of the exhaust gas, the rotating shaft 722 is rotated to drive the partition blade 721 to rotate, and the bristles on the partition blade 721 can scrape the solid pollutants on the filter screen 721 off, so that the good circulation of the screen surface is ensured;
step six, the exhaust gas after the secondary filtration enters the photolysis chamber 33 through a fourth delivery pipe 404; the ultraviolet lamp tube group 8 can effectively decompose pollutants such as malodorous substances in the waste gas through the dual functions of ultraviolet rays and ozone;
according to the difference of the waste gas flux, the connection condition of the second lamp tube in the second sleeve 84 can be controlled by pushing and pulling the sliding rod 82, so that the waste of excessive light sources is avoided; when the lamp tube works, the heat in the lamp tube is conducted to the flowing liquid in the first spiral tube 882, and the conducting liquid carries the heat into the second spiral tube, so that the heating function of the preheating chamber 61 in the fourth step is realized, and the aim of saving energy is fulfilled;
seventhly, the photolyzed exhaust gas enters the fourth unit chamber 54 through a fifth delivery pipe 405; an exhaust gas quality detection device is arranged in the fourth unit cavity 54; if the exhaust gas reaches the emission standard, opening a valve corresponding to the direct exhaust pipe 541, and discharging the exhaust gas out of the air purification system 2; if the waste gas does not reach the emission standard, opening a corresponding valve of the sixth delivery pipe 406, and discharging the waste gas after combustion; in the combustion process, the opening degree of the bleed valve 542 can be adjusted, so that the air and the waste gas are doped in a certain proportion before combustion, and the optimal combustion treatment effect is achieved.
The formula of the water-based UV coating comprises 180 parts of water-based resin 150, 3-4 parts of photoinitiator, 0.5-1 part of flatting agent, 3-8 parts of talcum powder, 1-2 parts of PH regulator and 1-2 parts of dispersant; wherein the water-based resin is a mixture of water-based epoxy acrylate and water-based polyester acrylate; the photoinitiator is 2,3, 6-trimethyl benzoyl phosphonic acid ethyl ester; the leveling agent is an acrylic leveling agent; the pH regulator is triethanolamine; the dispersant was LBD-1.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. Waterborne UV coating process systems, its characterized in that: comprises a dispersion system and an air purification system (2); the air purification system (2) comprises a purification well (3), an intake device (4) and an end cover (5); the purification well (3) is buried in the ground of the workshop; the end cover (5) is arranged at the top of the purifying well (3) in a matching way; the end cover (5) is free to move in the vertical direction; the suction device (4) comprises a pipeline (41) and a collector (42); the collectors (42) are distributed in the space around the dispersion system (1); the end cover (5) is provided with an air inlet (501) and an air outlet (502); one end of the pipeline (41) is communicated with the collector (42), and the other end of the pipeline is communicated and butted with the air inlet (501);
a spraying cavity (31) is arranged in the purification well (3); a first unit cavity (51) is arranged in the end cover (5); a first filter screen group (511) is arranged in the first unit cavity (51); one end of the spraying cavity (31) far away from the first filter screen group (511) is communicated with the air outlet (502); the first unit cavity (51) is communicated with an air inlet (501); the top of the inner wall of the spraying cavity (31) is provided with a plurality of spray heads (311) along the length direction thereof; the injection paths of a plurality of spray heads (311) correspond to the exhaust gas circulation paths; the bottom of the spraying cavity (31) is provided with a first liquid discharge pipe (312) in a communicating manner.
2. The aqueous UV coating process system of claim 1, wherein: a second unit cavity (52) is also arranged in the end cover (5); a first conveying pipe (401) is communicated between the second unit cavity (52) and the spraying cavity (31); an absorption cavity (32) is arranged in the purification well (3); the absorption cavity (32) is filled with absorption liquid; a second liquid discharge pipe (321) is communicated with the bottom of the absorption cavity (32); a second conveying pipe (402) is communicated between the second unit cavity (52) and the absorption cavity (32); the first conveying pipe (401) and the second conveying pipe (402) are respectively arranged on two opposite side wall surfaces of the second unit cavity (52); a drying device (521) is arranged in the second unit cavity (52); the drying device (521) comprises a housing (522) and a water absorbing material; the shell (522) is a hollow cake-shaped structure; a plurality of air holes (524) are formed in the shell (522); the water absorption material is filled and arranged inside the shell (522); the shells (522) are arranged along the circulation direction of the waste gas and are arranged at intervals; a material changing port (525) is arranged at the edge of the shell (522); the edge of the shell (522) is coated with an arc-shaped groove (526); a material leakage port (527) is formed in the bottom of the arc-shaped groove (526); a recycling cavity (528) is also arranged in the second unit cavity (52); the recycling cavity (528) is correspondingly arranged below the shell (522) and is communicated with the discharge port (527); a rod piece (529) is arranged at the center of the shell (522) in a penetrating and connecting mode; the length direction of the rod piece (529) is consistent with the arrangement direction of the plurality of shells (522).
3. The aqueous UV coating process system of claim 2, wherein: one end of the second liquid discharge pipe (321) far away from the absorption cavity (32) is communicated with a circulating device (6); the circulating device (6) comprises a preheating chamber (61), a transfer chamber (62) and a fractionator (63); the input end of the preheating chamber (61) is butted with a second liquid discharge pipe (321); the output end of the preheating chamber (61) is communicated with the inlet end of the fractionator (63); the outlet end of the fractionator (63) is communicated with the inlet end of the transfer chamber (62); the outlet end of the transfer chamber (62) is communicated with the inlet end of the absorption cavity (32).
4. The aqueous UV coating process system of claim 3, wherein: a third unit cavity (53) is also arranged in the end cover (5); a third conveying pipe (403) is communicated between the absorption cavity (32) and the third unit cavity (53); a photolysis chamber (33) is arranged in the purification well (3); an ultraviolet lamp tube group (8) is arranged in the photolysis chamber (33); a fourth conveying pipe (404) is communicated between the third unit cavity (53) and the photolysis chamber (33); the interfaces of the third delivery pipe (403), the fourth delivery pipe (404) and the third unit cavity (53) are respectively arranged on two side wall surfaces opposite in position; a second filter screen group (7) is arranged in the third unit cavity (53);
the second filter screen group (7) comprises a filter screen sheet (71), a support frame (72) and a sealing frame (73); a plurality of filter screen sheets (71) are arranged between the joints of the third conveying pipe (403) and the fourth conveying pipe (404) at intervals in parallel; the supporting frame (72) comprises a partition blade (721) and a rotating shaft (722); the separation blades (721) are clamped between adjacent filter screen sheets (71); the surface of the separation blade (721) is provided with bristles; the rotating shaft (722) penetrates through the filter screen sheet (71) and is connected with the center of the support frame (72); the supporting frame (72) is rotated to drive the separating blades (721) to synchronously rotate.
5. The aqueous UV coating process system of claim 4, wherein: the ultraviolet lamp tube group (8) comprises a bearing rod (81), a sliding rod (82), a first sleeve (83) and a second sleeve (84); the first sleeve (83) and the second sleeve (84) are of net structures, and are provided with light through holes in a hollow manner; the bearing rod (81) is fixedly arranged on the inner wall of the photolysis chamber (33); two ends of the bearing rod (81) along the length direction respectively correspond to the third conveying pipe (403) and the fourth conveying pipe (404); the sliding rods (82) are arranged above the bearing rods (81) in parallel; the first sleeve (83) is correspondingly nested and matched with the bearing rod (81) along the length direction of the first sleeve; the second sleeve (84) is correspondingly nested and matched with the bearing rod (81) along the length direction of the second sleeve; an embedding groove (842) is formed in the end face, close to the first sleeve (83), of the second sleeve (84); the sliding rod (82) penetrates through the first sleeve (83) and is fixedly embedded into the embedding groove (842); a first lamp tube is arranged in the first sleeve (83); a second lamp tube is arranged in the second sleeve (84); one end of the first lamp tube close to the second lamp tube is electrically connected with a power supply connector (87); and pulling the sliding rod (82) to drive the second sleeve (84) to move synchronously, and switching the connection state of the power connector (87).
6. The aqueous UV coating process system of claim 5, wherein: the ultraviolet lamp tube group (8) also comprises a heat exchange shell (88); the two heat exchange shells (88) are respectively arranged in the first sleeve (83) and the second sleeve (84); the heat exchange shell (88) comprises a first shell (881), a first spiral pipe (882) and a second shell (883); the first spiral pipe (882) is clamped between the first shell (881) and the second shell (883); the heat exchange shell (88) is made of quartz glass; a circulating pump and a second spiral pipe extend from the first spiral pipe (882); the second spiral tube is arranged in the heat-conducting inner wall of the preheating chamber (61).
7. The aqueous UV coating process system of claim 4, wherein: a fourth unit cavity (54) is also arranged in the end cover (5); the gas outlet end of the photolysis chamber (33) is communicated with the gas inlet end of the fourth unit cavity (54) through a fifth conveying pipe (405); the air outlet (502) is arranged on one side of the fourth unit cavity (54) far away from the fifth conveying pipe (405); a sixth conveying pipe (406) is connected to the air outlet (502); a straight-line pipe (541) is communicated with the sixth conveying pipe (406); one end of the sixth conveying pipe (406) far away from the fourth unit cavity (54) corresponds to the position of a flame jet orifice; the sixth conveying pipe (406) is also provided with an exhaust pump (542) and a bleed valve (543) in a communicating manner; the side of the bleed valve (542) facing away from the sixth transport pipe (406) is exposed to the ambient air.
8. Process method of an aqueous UV coating process system according to claims 1 to 7, characterized in that: comprises the following steps of (a) carrying out,
step one, starting an exhaust pump (542), enabling waste collected in a suction device (4) to enter a first unit cavity (51), and then passing through a first filter screen group (511), wherein larger-particle solid dust is reserved in the first unit cavity (51), and the rest part of the larger-particle solid dust enters a spraying cavity (31);
secondly, a spray head (311) in the spray cavity (31) sprays water on the waste flow path to absorb water-soluble substances in the waste flow path, and then the water-soluble substances are discharged out of the purification well through a first liquid discharge pipe (312) at the bottom of the spray cavity, so that the subsequent water quality purification treatment is facilitated;
step three, the waste gas after the spraying treatment enters a second unit cavity (52) through a first conveying pipe (401); when the exhaust gas meets the drying device (521), the exhaust gas can pass through the air holes (524) on the surfaces of the plurality of layers of shells (522), and the moisture in the exhaust gas can be removed by the water-absorbing material in the shells, such as water-absorbing silica gel particles and the like;
when the water absorption material is close to saturation, the rod member (529) is rotated to drive the shell (522) to synchronously rotate; the material changing port (525) corresponds to the material leakage port (527) in the rotating process, and the nearly saturated water absorbing material falls downwards into a recovery drawer (530) in the recovery cavity (528) so as to be convenient for uniform and periodic dumping; the rod piece (529) is continuously rotated along with the hand, so that the material changing port (525) is returned to the position which is upward initially, and then new water absorbing materials are continuously added into the shell (522);
step four, the dried waste gas enters the absorption cavity (32) through the second conveying pipe (402), absorption liquid such as gasoline is filled in the absorption cavity (32), and organic pollutants in the waste gas can be dissolved;
during the operation of the absorption chamber (32), part of the absorption liquid enters the preheating chamber (61) from the second discharge pipe (321), then enters the fractionating chamber (63) to separate the absorption liquid from the organic pollutants in the absorption liquid, the recovered pure absorption liquid is conveyed into the transfer chamber (62), and then the absorption liquid in the transfer chamber (62) is continuously conveyed back into the absorption chamber (32) through the return pipe (322) according to the flow rate of the waste gas;
step five, the exhaust gas treated by the absorption cavity (32) enters a third unit cavity (53) through a third delivery pipe (403); when the waste gas passes through the second filter screen group (7), the fine solid impurities in the waste gas can be intercepted by the filter screen sheets (71), so that the secondary filtering process of solid particles is realized;
when solid pollutants accumulated on the filter screen sheet (71) influence the circulation of exhaust gas, the rotating shaft (722) is rotated to drive the partition blade (721) to rotate, and the bristles on the partition blade (721) can scrape the solid pollutants on the filter screen sheet (721) down to ensure good circulation of the screen surface;
sixthly, the waste gas after secondary filtration enters the photolysis chamber (33) through a fourth conveying pipe (404); the ultraviolet lamp tube group (8) can effectively decompose pollutants such as malodorous substances in the waste gas through the dual functions of ultraviolet rays and ozone;
according to the difference of the waste gas flow, the connection condition of a second lamp tube in the second sleeve (84) can be controlled by pushing and pulling the sliding rod (82), so that the waste of excessive light sources is avoided; when the lamp tube works, the heat in the lamp tube is conducted to the flowing liquid in the first spiral tube (882), and the conducting liquid carries the heat into the second spiral tube, so that the heating function of the preheating chamber (61) in the fourth step is realized, and the aim of saving energy is fulfilled;
seventhly, the photolyzed waste gas enters a fourth unit cavity (54) through a fifth conveying pipe (405); an exhaust gas quality detection device is arranged in the fourth unit cavity (54); if the waste gas reaches the emission standard, opening a valve corresponding to the straight exhaust pipe (541) and discharging the waste gas out of the air purification system (2); if the waste gas does not reach the emission standard, opening a corresponding valve of the sixth conveying pipe (406) to enable the waste gas to be discharged after combustion; in the combustion process, the opening degree of the air-entraining valve (542) can be adjusted, so that the air and the waste gas are doped in a certain proportion before combustion, and the optimal combustion treatment effect is achieved.
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