CN107930314A - A kind of gas recovery system and its recovery process for textile setting machine - Google Patents
A kind of gas recovery system and its recovery process for textile setting machine Download PDFInfo
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- CN107930314A CN107930314A CN201710980744.8A CN201710980744A CN107930314A CN 107930314 A CN107930314 A CN 107930314A CN 201710980744 A CN201710980744 A CN 201710980744A CN 107930314 A CN107930314 A CN 107930314A
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- 238000011084 recovery Methods 0.000 title claims abstract description 64
- 239000004753 textile Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 174
- 238000005406 washing Methods 0.000 claims abstract description 50
- 239000007787 solid Substances 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 36
- 238000004064 recycling Methods 0.000 claims abstract description 5
- 235000019198 oils Nutrition 0.000 claims description 129
- 239000002912 waste gas Substances 0.000 claims description 84
- 238000005507 spraying Methods 0.000 claims description 78
- 239000003595 mist Substances 0.000 claims description 63
- 238000001179 sorption measurement Methods 0.000 claims description 55
- 239000007789 gas Substances 0.000 claims description 47
- 238000000926 separation method Methods 0.000 claims description 46
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 28
- 235000019476 oil-water mixture Nutrition 0.000 claims description 25
- 229920000742 Cotton Polymers 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000003795 desorption Methods 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 239000003463 adsorbent Substances 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000004513 sizing Methods 0.000 abstract 1
- 238000009941 weaving Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 109
- 238000001514 detection method Methods 0.000 description 5
- 239000003517 fume Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- -1 phosphate ester Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100001239 persistent pollutant Toxicity 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 210000004916 vomit Anatomy 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Textile Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Treating Waste Gases (AREA)
- Filtering Materials (AREA)
Abstract
The present invention provides a kind of gas recovery system and its recovery process for textile setting machine, and the gas recovery system includes：Solid filtration apparatus, spray washing device, adsorbent equipment, steam generator, oily-water seperating equipment, condensing unit, spray water tank and oily collection device；Exhaust gas goes oil removing by solid filtration apparatus, spray washing device and adsorbent equipment, and be purified discharge, then the oil by the recycling absorption of steam generator, oily-water seperating equipment and condensing unit.The exhaust gas discharged using recovery system of the present invention to textile setting machine is recycled, exhaust gas, which can not only be purified, makes its qualified discharge avoid pollution environment, and the weavings such as the color additive in exhaust gas sizing additive-treated oil can be recycled, the rate of recovery has saved textile manufacturing cost up to 87~92%.
Description
Technical Field
The invention relates to a waste gas recovery system and a recovery process thereof, in particular to a waste gas recovery system for a textile setting machine and a recovery process thereof.
Background
The oil fume discharged by the setting machine is greatly different from the oil fume of the catering industry in nature and composition. It belongs to industrial oil fume and is the general name of grease and organic matter volatilized from cloth in the high temperature setting process of setting machine and the products of thermal decomposition or cracking. The oil fume discharged by the setting machine mainly comes from chain machine oil of the setting machine in cloth in a high-temperature setting process, and mainly comprises a chemical fiber oil smoothing agent, an antistatic agent, a phosphate ester of an emulsifier, a fatty acid ester, a sulfate, polyether and other surface active monomers, a lubricant and the like.
The waste gas of the setting machine is a mixed fluid containing gas-liquid-solid three-phase pollutants, has the characteristics of high temperature, high humidity, oil-containing and complex components and the like, and is very serious in harm. Organic steam and oil mist smoke in the waste gas are important sources of substances and PM2.5 damaging the ozone layer in the atmosphere, and are also sources of photochemical smog forming the air to influence the environmental air quality and destroy the earth ecology. The waste gas contains vomit odor and oily particles which are offensive to the health of residents; various persistent pollutants contained in the exhaust gas easily cause respiratory diseases of human bodies, possibly influence the immunity of the human bodies to cause great damage to reproductive systems, and even possibly cause canceration. The oil smoke particles are adhered by condensation nuclei in pipelines and equipment, so that the pipeline equipment is blocked and fails, and the oil smoke particles have flammable and explosive properties, thereby endangering the safe and stable production of enterprises.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a waste gas recovery system for a textile setting machine and a recovery process thereof, so as to overcome the defects in the prior art.
In order to achieve the above object, the present invention provides an exhaust gas recovery system for a textile setting machine, the exhaust gas recovery system comprising: the device comprises a solid filtering device, a spraying and washing device, an adsorption device, a water vapor generating device, an oil-water separating device, a condensing device, a spraying water storage tank and an oil collecting device; the waste gas generated by the textile setting machine is subjected to dust and other solid impurities removal through the solid filtering device, and the obtained dust-free waste gas enters the spraying and washing device; the spraying and washing device is communicated with the adsorption device through a pipeline, and the dust-free waste gas is cooled through the spraying and washing device and oil mist particles in the waste gas are removed; the adsorption device is respectively communicated with the water vapor generation device and the condensation device through pipelines; the exhaust gas from which the oil mist particles are removed enters an adsorption device to further remove gaseous oil mist in the exhaust gas so as to exhaust purified gas; steam generated by the steam generating device performs steam sweeping desorption on the adsorption device to obtain steam with oil mist; the water vapor with the oil mist enters a condensing device for condensation to obtain an oil-water mixture; the oil-water mixture of the condensing device and the spraying and washing device enters the oil-water separating device for oil-water separation, the obtained oil enters the oil collecting device, and the obtained water enters the spraying water storage tank; the spraying water storage tank is communicated with the spraying water washing device through a pipeline and provides spraying water for the spraying water washing device.
As a further description of the waste gas recovery system of the present invention, preferably, a conical filter screen and a filter cotton layer are sequentially clamped on the inner wall of the solid filtering device from bottom to top, the conical filter screen is a conical metal screen, and sieve pores are uniformly formed on the conical filter screen for filtering solid impurities.
As a further explanation of the exhaust gas recovery system according to the present invention, it is preferable that the conical filter net has a mesh size of 0.125mm to 0.18 mm.
As a further description of the waste gas recovery system of the present invention, preferably, the filtering cotton layer is glass fiber cotton, and the pore size of the glass fiber cotton is 2 to 5 micrometers.
As a further explanation of the exhaust gas recovery system according to the present invention, it is preferable that an activated carbon layer is provided in the adsorption device for adsorbing and recovering the gaseous oil mist.
As a further explanation of the offgas recovery system of the present invention, it is preferable that the condensing means includes a first condenser, a gas-liquid separator, and a second condenser; the adsorption device is communicated with the first condenser through a pipeline, the first condenser is communicated with the gas-liquid separator through a pipeline, the gas-liquid separator is communicated with the second condenser and the oil-water separation device through a pipeline, and the second condenser is communicated with the oil-water separation device through a pipeline.
As a further explanation of the exhaust gas recovery system of the present invention, preferably, an oil-water separation filter layer is disposed in the oil-water separation device, the oil-water separation filter layer sequentially includes a support grid, an oil-water filter screen, and a compression grid from bottom to top, the support grid is fixedly connected to the oil-water separation device by a clamping block on an inner wall of the oil-water separation device, and the compression grid is fixedly connected to the support grid by a bolt, so as to fix the oil-water filter screen between the support grid and the compression grid.
As a further description of the waste gas recovery system, preferably, the oil-water filter screen is made of a hydrophilic and oleophobic resin filter membrane, and the aperture of the filter membrane is 0.5-1 micron.
As a further explanation of the exhaust gas recovery system according to the present invention, it is preferable that the oil collecting means includes a dryer and an oil recovery tank; the oil-water separation device is communicated with the dryer through a pipeline, and the dryer is communicated with the oil recovery tank through a pipeline and used for absorbing water in oil.
In order to achieve another object of the present invention, the present invention also provides a recycling process using the exhaust gas recycling system, the process comprising the steps of:
step 1): collecting waste gas, and then, feeding the waste gas into a solid filtering device to remove dust and other solid impurities so as to form dust-free waste gas;
step 2): the dust-free waste gas enters a spraying and washing device to be cooled to 50-60 ℃, and oil mist particles in the waste gas are removed;
step 3): the waste gas from which the oil mist particles are removed enters an adsorption device, and the activated carbon layer therein adsorbs the gaseous oil mist in the waste gas to purify the waste gas and exhaust the purified gas;
step 4): when the adsorption device reaches 95% of full adsorption load, starting the water vapor generation device to perform vapor purging desorption on the adsorption device to obtain water vapor with oil mist;
step 5): the water vapor with the oil mist enters a condensing device for condensation to obtain an oil-water mixture;
step 6): respectively introducing the oil-water mixture from the spray water washing device and the condensing device into an oil-water separation device to respectively obtain oil and water;
step 7): and drying the obtained oil by a dryer, collecting the oil in an oil recovery tank, collecting the obtained water in a spraying water storage tank, and continuously spraying the water in a spraying water washing device.
The invention provides a waste gas recovery system for a textile setting machine, which is used for recovering waste gas discharged by the textile setting machine, not only can purify the waste gas to ensure that the waste gas reaches the standard and is discharged to avoid polluting the environment, but also can recover textile setting additive oil such as dye auxiliary agent in the waste gas, the recovery rate can reach 87-92%, and the textile production cost is saved.
Drawings
FIG. 1 is a schematic view of the waste gas recovery system for a textile setter of the present invention;
FIG. 2 is a schematic view of the construction of the solids filter of the present invention;
FIG. 3 is a schematic view of the connection of the condensing unit according to the present invention;
FIG. 4 is a schematic structural view of an oil-water separation filter layer according to the present invention;
FIG. 5 is a schematic view of the connection of the oil collecting device of the present invention.
The reference numerals are explained below:
the device comprises a solid filtering device 1, a conical filter screen 11, a filter cotton layer 12, a spraying and washing device 2, an adsorption device 3, a water vapor generating device 4, an oil-water separating device 5, an oil-water separating filter layer 51, a support grid 511, an oil-water filter screen 512, a compression grid 513, a condensing device 6, a first condenser 61, a gas-liquid separator 62, a second condenser 63, a spraying water storage tank 7, an oil collecting device 8, a dryer 81 and an oil recovery tank 82.
Detailed Description
To further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solutions of the present invention and are not to limit the present invention.
As shown in fig. 1, fig. 1 is a schematic view of a waste gas recovery system for a textile setting machine according to the present invention; the exhaust gas recovery system includes: the device comprises a solid filtering device 1, a spraying and washing device 2, an adsorption device 3, a water vapor generating device 4, an oil-water separating device 5, a condensing device 6, a spraying water storage tank 7 and an oil collecting device 8; the solid filtering device 1 is communicated with the spraying and washing device 2 through a pipeline, dust and other solid impurities in waste gas generated by the textile setting machine are removed through the solid filtering device 1, and the obtained dust-free waste gas enters the spraying and washing device 2; the spraying and washing device 2 is communicated with the adsorption device 3 through a pipeline, and the dust-free waste gas is cooled through the spraying and washing device 2 and oil mist particles in the waste gas are removed; the adsorption device 3 is respectively communicated with the water vapor generation device 4 and the condensation device 6 through pipelines; the exhaust gas from which the oil mist particles are removed enters an adsorption device 3 to further remove the gaseous oil mist in the exhaust gas, so that the purified gas is exhausted; steam generated by the steam generating device 4 performs steam sweeping desorption on the adsorption device 3 to obtain steam with oil mist; the water vapor with the oil mist enters a condensing device 6 for condensation to obtain an oil-water mixture; the oil-water mixture of the condensing device 6 and the spraying and washing device 2 enters an oil-water separation device 5 for oil-water separation, the obtained oil enters an oil collection device 8, and the obtained water enters a spraying water storage tank 7; the spraying water storage tank 7 is communicated with the spraying washing device 2 through a pipeline and provides spraying water for the spraying washing device 2.
FIG. 2 is a schematic view of the solid filter apparatus of the present invention, as shown in FIG. 2; the inner wall of the solid filtering device 1 is sequentially provided with a conical filtering net 11 and a filtering cotton layer 12 from bottom to top, the conical filtering net 11 is a conical metal screen, and sieve pores are uniformly formed in the conical metal screen and used for filtering solid impurities. Preferably, the screen hole size of the conical filter screen 12 is 0.125 mm-0.18 mm, the filter cotton layer 12 is glass fiber cotton, and the pore size of the glass fiber cotton is 2-5 microns. Adopt the toper filter screen to compare in traditional disc filter screen can increase filter area, and the filter screen can reduce the gas resistance as the installation of figure orientation, reduces the pressure drop that the gas flows, avoids the kinetic energy loss.
As shown in fig. 3, fig. 3 is a schematic connection diagram of the condensing unit of the present invention; the condensing device 6 includes a first condenser 61, a gas-liquid separator 62, and a second condenser 63; the adsorption device 3 is communicated with the first condenser 61 through a pipeline, the first condenser 61 is communicated with the gas-liquid separator 62 through a pipeline, the gas-liquid separator 62 is communicated with the second condenser 63 and the oil-water separation device 5 through a pipeline, and the second condenser 63 is communicated with the oil-water separation device 5 through a pipeline. The condensation efficiency can be improved by adopting two-time condensation of two condensers connected in series, and incomplete condensation in one time is avoided.
FIG. 4 is a schematic view of the oil-water separation filter layer according to the present invention; an oil-water separation filter layer 51 is arranged in the oil-water separation device 5, the oil-water separation filter layer 51 sequentially comprises a support grid 511, an oil-water filter screen 512 and a compression grid 513 from bottom to top, the support grid 511 is fixedly connected with the oil-water separation device 5 in a clamping mode through a clamping block on the inner wall of the oil-water separation device 5, and the compression grid 513 is fixedly connected with the support grid 511 through bolts so that the oil-water filter screen 512 is fixed between the support grid 511 and the compression grid 513. Preferably, the oil-water filter screen 512 is made of a hydrophilic and oleophobic resin filter membrane, and the aperture of the filter membrane is 0.5-1 micron. Hydrophilic oleophobic filter membrane can make water pass through the membrane pore smoothly and block oil and pass through, compare in utilizing the different separation profit of molecule size, and the separation efficiency who adopts this filter membrane is higher, also can avoid the filter membrane often to block up, improves production efficiency.
FIG. 5 is a schematic view of the connection of the oil collecting device of the present invention, as shown in FIG. 5; the oil collecting device 8 includes a dryer 81 and an oil recovery tank 82; the oil-water separator 5 is connected to the dryer 81 through a pipeline, and the dryer 81 is connected to the oil recovery tank 82 through a pipeline, and is configured to absorb moisture in the oil.
Example 1
Step 1): the waste gas enters the solid filtering device 1 after being collected, and solid impurities and dust are removed through a conical filter screen 11 with the aperture of 0.125mm and a filter cotton layer 12 with the aperture of 2 microns respectively, so that dust-free waste gas is formed.
Step 2): the dustless waste gas enters the spraying and washing device 2 to be cooled to 50 ℃, and the oil mist particles in the waste gas are washed by spraying water to obtain the waste gas and the oil-water mixture with the oil mist particles removed.
Step 3): the exhaust gas from which the oil mist particles are removed enters the adsorption device 3, the activated carbon layer therein adsorbs the gaseous oil mist in the exhaust gas to purify the exhaust gas, and the purified clean air is discharged from the top of the adsorption device 3 to the air.
Step 4): when the adsorption device 3 reaches 95% of the full adsorption load, the water vapor generation device 4 is started to generate water vapor so as to perform vapor purging desorption on the oil adsorbed by the activated carbon layer of the adsorption device 3 to obtain the water vapor with oil mist.
Step 5): the water vapor with the oil mist enters the condensing device 6, and is condensed twice through the first condenser 61 and the second condenser 63 respectively, so that the water vapor with the oil mist is condensed into an oil-water mixture.
Step 6): the oil-water mixture respectively coming from the spraying water washing device 2 and the condensing device 6 enters an oil-water separation device 5, and oil-water separation is carried out through an oil-water filter screen 512 with the aperture of 0.5 micron, so that oil and water are respectively obtained.
Step 7): the obtained oil is dried by a dryer 81 and then collected in an oil recovery tank 82 to be recycled, and the obtained water is collected in a spraying water storage tank 7 and is continuously used for spraying in the spraying water washing device 2.
Through the waste gas recovery process, the waste gas meets the discharge standard and can be directly discharged through detection, and the recovery rate of oil in the waste gas is 87.5%.
Example 2
Step 1): the waste gas enters the solid filtering device 1 after being collected, and solid impurities and dust are removed through a conical filter screen 11 with the aperture of 0.14mm and a filter cotton layer 12 with the aperture of 3 microns respectively, so that dust-free waste gas is formed.
Step 2): and the dustless waste gas enters the spraying and washing device 2 to be cooled to 52 ℃, and the spraying water is used for washing the oil mist particles in the waste gas to obtain the waste gas and the oil-water mixture from which the oil mist particles are removed.
Step 3): the exhaust gas from which the oil mist particles are removed enters the adsorption device 3, the activated carbon layer therein adsorbs the gaseous oil mist in the exhaust gas to purify the exhaust gas, and the purified clean air is discharged from the top of the adsorption device 3 to the air.
Step 4): when the adsorption device 3 reaches 95% of the full adsorption load, the water vapor generation device 4 is started to generate water vapor so as to perform vapor purging desorption on the oil adsorbed by the activated carbon layer of the adsorption device 3 to obtain the water vapor with oil mist.
Step 5): the water vapor with the oil mist enters the condensing device 6, and is condensed twice through the first condenser 61 and the second condenser 63 respectively, so that the water vapor with the oil mist is condensed into an oil-water mixture.
Step 6): the oil-water mixture respectively coming from the spraying water washing device 2 and the condensing device 6 enters an oil-water separation device 5, and oil-water separation is carried out through an oil-water filter screen 512 with the aperture of 0.6 micron, so that oil and water are respectively obtained.
Step 7): the obtained oil is dried by a dryer 81 and then collected in an oil recovery tank 82 to be recycled, and the obtained water is collected in a spraying water storage tank 7 and is continuously used for spraying in the spraying water washing device 2.
Through the waste gas recovery process, the waste gas meets the discharge standard and can be directly discharged through detection, and the recovery rate of oil in the waste gas is 89%.
Example 3
Step 1): the waste gas enters a solid filtering device 1 after being collected, and solid impurities and dust are removed through a conical filter screen 11 with the aperture of 0.15mm and a filtering cotton layer 12 with the aperture of 4 microns respectively, so that dust-free waste gas is formed.
Step 2): and the dustless waste gas enters the spraying and washing device 2 to be cooled to 54 ℃, and the oil mist particles in the waste gas are washed by spraying water to obtain the waste gas and the oil-water mixture from which the oil mist particles are removed.
Step 3): the exhaust gas from which the oil mist particles are removed enters the adsorption device 3, the activated carbon layer therein adsorbs the gaseous oil mist in the exhaust gas to purify the exhaust gas, and the purified clean air is discharged from the top of the adsorption device 3 to the air.
Step 4): when the adsorption device 3 reaches 95% of the full adsorption load, the water vapor generation device 4 is started to generate water vapor so as to perform vapor purging desorption on the oil adsorbed by the activated carbon layer of the adsorption device 3 to obtain the water vapor with oil mist.
Step 5): the water vapor with the oil mist enters the condensing device 6, and is condensed twice through the first condenser 61 and the second condenser 63 respectively, so that the water vapor with the oil mist is condensed into an oil-water mixture.
Step 6): the oil-water mixture respectively coming from the spraying water washing device 2 and the condensing device 6 enters an oil-water separation device 5, and oil-water separation is carried out through an oil-water filter screen 512 with the aperture of 0.7 micron, so that oil and water are respectively obtained.
Step 7): the obtained oil is dried by a dryer 81 and then collected in an oil recovery tank 82 to be recycled, and the obtained water is collected in a spraying water storage tank 7 and is continuously used for spraying in the spraying water washing device 2.
Through the waste gas recovery process, the waste gas meets the discharge standard and can be directly discharged through detection, and the recovery rate of oil in the waste gas is 90.3%.
Example 4
Step 1): the waste gas enters a solid filtering device 1 after being collected, and solid impurities and dust are removed through a conical filter screen 11 with the aperture of 0.17mm and a filtering cotton layer 12 with the aperture of 4.5 microns respectively, so that dust-free waste gas is formed.
Step 2): and the dustless waste gas enters the spraying and washing device 2 to be cooled to 57 ℃, and the oil mist particles in the waste gas are washed by spraying water to obtain the waste gas and the oil-water mixture from which the oil mist particles are removed.
Step 3): the exhaust gas from which the oil mist particles are removed enters the adsorption device 3, the activated carbon layer therein adsorbs the gaseous oil mist in the exhaust gas to purify the exhaust gas, and the purified clean air is discharged from the top of the adsorption device 3 to the air.
Step 4): when the adsorption device 3 reaches 95% of the full adsorption load, the water vapor generation device 4 is started to generate water vapor so as to perform vapor purging desorption on the oil adsorbed by the activated carbon layer of the adsorption device 3 to obtain the water vapor with oil mist.
Step 5): the water vapor with the oil mist enters the condensing device 6, and is condensed twice through the first condenser 61 and the second condenser 63 respectively, so that the water vapor with the oil mist is condensed into an oil-water mixture.
Step 6): the oil-water mixture respectively coming from the spraying water washing device 2 and the condensing device 6 enters an oil-water separation device 5, and oil-water separation is carried out through an oil-water filter screen 512 with the aperture of 0.8 micron, so that oil and water are respectively obtained.
Step 7): the obtained oil is dried by a dryer 81 and then collected in an oil recovery tank 82 to be recycled, and the obtained water is collected in a spraying water storage tank 7 and is continuously used for spraying in the spraying water washing device 2.
Through the waste gas recovery process, the waste gas meets the discharge standard and can be directly discharged through detection, and the recovery rate of oil in the waste gas is 91%.
Example 5
Step 1): the waste gas enters the solid filtering device 1 after being collected, and solid impurities and dust are removed through a conical filter screen 11 with the aperture of 0.18mm and a filtering cotton layer 12 with the aperture of 5 microns respectively, so that dust-free waste gas is formed.
Step 2): the dustless waste gas enters the spraying and washing device 2 to be cooled to 60 ℃, and the oil mist particles in the waste gas are washed by spraying water to obtain the waste gas and the oil-water mixture with the oil mist particles removed.
Step 3): the exhaust gas from which the oil mist particles are removed enters the adsorption device 3, the activated carbon layer therein adsorbs the gaseous oil mist in the exhaust gas to purify the exhaust gas, and the purified clean air is discharged from the top of the adsorption device 3 to the air.
Step 4): when the adsorption device 3 reaches 95% of the full adsorption load, the water vapor generation device 4 is started to generate water vapor so as to perform vapor purging desorption on the oil adsorbed by the activated carbon layer of the adsorption device 3 to obtain the water vapor with oil mist.
Step 5): the water vapor with the oil mist enters the condensing device 6, and is condensed twice through the first condenser 61 and the second condenser 63 respectively, so that the water vapor with the oil mist is condensed into an oil-water mixture.
Step 6): the oil-water mixture respectively coming from the spraying water washing device 2 and the condensing device 6 enters an oil-water separation device 5, and oil-water separation is carried out through an oil-water filter screen 512 with the aperture of 1 micron, so that oil and water are respectively obtained.
Step 7): the obtained oil is dried by a dryer 81 and then collected in an oil recovery tank 82 to be recycled, and the obtained water is collected in a spraying water storage tank 7 and is continuously used for spraying in the spraying water washing device 2.
Through the waste gas recovery process, the waste gas meets the discharge standard and can be directly discharged through detection, and the recovery rate of oil in the waste gas is 92%.
It should be noted that the above summary and the detailed description are intended to demonstrate the practical application of the technical solutions provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the invention. The scope of the invention is to be determined by the appended claims.
Claims (10)
1. A waste gas recovery system for a textile setting machine, the waste gas recovery system comprising: the device comprises a solid filtering device (1), a spraying and washing device (2), an adsorption device (3), a water vapor generating device (4), an oil-water separating device (5), a condensing device (6), a spraying water storage tank (7) and an oil collecting device (8); wherein,
the device comprises a solid filtering device (1), wherein the solid filtering device (1) is communicated with a spraying and washing device (2) through a pipeline, dust and other solid impurities in waste gas generated by a textile setting machine are removed through the solid filtering device (1), and the obtained dust-free waste gas enters the spraying and washing device (2);
the spraying and washing device (2), the spraying and washing device (2) is communicated with the adsorption device (3) through a pipeline, and the dust-free waste gas is cooled through the spraying and washing device (2) and oil mist particles in the waste gas are removed;
the adsorption device (3), the adsorption device (3) is respectively communicated with the water vapor generation device (4) and the condensation device (6) through pipelines; the exhaust gas from which the oil mist particles are removed enters an adsorption device (3) to further remove the gaseous oil mist in the exhaust gas so as to exhaust the purified gas; steam generated by the steam generating device (4) performs steam sweeping desorption on the adsorption device (3) to obtain steam with oil mist; the water vapor with the oil mist enters a condensing device (6) for condensation to obtain an oil-water mixture;
the oil-water mixture of the oil-water separation device (5), the condensing device (6) and the spraying water washing device (2) enters the oil-water separation device (5) for oil-water separation, the obtained oil enters the oil collecting device (8), and the obtained water enters the spraying water storage tank (7);
the spraying water storage tank (7) is communicated with the spraying washing device (2) through a pipeline, and provides spraying water for the spraying washing device (2).
2. The exhaust gas recovery system according to claim 1, wherein the inner wall of the solid filtering device (1) is provided with a conical filtering net (11) and a filtering cotton layer (12) in sequence from bottom to top, wherein the conical filtering net (11) is a conical metal screen mesh, and sieve pores are uniformly formed on the conical filtering net for filtering solid impurities.
3. An exhaust gas recovery system according to claim 2, wherein the conical filter (12) has a mesh size of 0.125mm to 0.18 mm.
4. The exhaust gas recovery system according to claim 2, wherein the filter cotton layer (12) is glass fiber cotton having a pore size of 2 to 5 μm.
5. An exhaust gas recovery system according to claim 1, wherein the adsorption device (3) is provided with an activated carbon layer for adsorbing and recovering the gaseous oil mist.
6. An offgas recovery system as claimed in claim 1, characterized in that the condensing unit (6) comprises a first condenser (61), a gas-liquid separator (62) and a second condenser (63); the adsorption device (3) is communicated with the first condenser (61) through a pipeline, the first condenser (61) is communicated with the gas-liquid separator (62) through a pipeline, the gas-liquid separator (62) is communicated with the second condenser (63) and the oil-water separation device (5) through a pipeline, and the second condenser (63) is communicated with the oil-water separation device (5) through a pipeline.
7. The waste gas recovery system of claim 1, wherein an oil-water separation filter layer (51) is arranged in the oil-water separation device (5), the oil-water separation filter layer (51) sequentially comprises a support grid (511), an oil-water filter screen (512) and a compression grid (513) from bottom to top, the support grid (511) is fixedly connected with the oil-water separation device (5) in a clamping manner through a clamping block on the inner wall of the oil-water separation device (5), and the compression grid (513) is fixedly connected with the support grid (511) through a bolt so as to fix the oil-water filter screen (512) between the support grid (511) and the compression grid (513).
8. The exhaust gas recovery system according to claim 7, wherein the oil-water filter (512) is made of a hydrophilic and oleophobic resin filter membrane, and the pore size of the filter membrane is 0.5-1 μm.
9. An exhaust gas recovery system according to claim 1, characterized in that the oil collecting device (8) comprises a dryer (81) and an oil recovery tank (82); the oil-water separation device (5) is communicated with the dryer (81) through a pipeline, and the dryer (81) is communicated with the oil recovery tank (82) through a pipeline and used for absorbing water in oil.
10. A recycling process using the exhaust gas recycling system according to any one of claims 1 to 9, wherein the process comprises the steps of:
step 1): the waste gas is collected and then enters a solid filtering device (1) to remove dust and other solid impurities so as to form dust-free waste gas;
step 2): the dustless waste gas enters a spraying and washing device (2), is cooled to 50-60 ℃ through spraying and washing, and removes oil mist particles in the waste gas;
step 3): the exhaust gas from which the oil mist particles are removed enters an adsorption device (3), and the activated carbon layer therein adsorbs the gaseous oil mist in the exhaust gas to purify the exhaust gas and exhaust the purified gas;
step 4): when the adsorption device (3) reaches 95% of full adsorption load, starting the water vapor generation device (4) to generate water vapor so as to perform vapor purging desorption on the adsorption device (3) to obtain water vapor with oil mist;
step 5): the water vapor with the oil mist enters a condensing device (6) for condensation to obtain an oil-water mixture;
step 6): oil-water mixtures respectively coming from the spraying water washing device (2) and the condensing device (6) enter an oil-water separation device (5) for oil-water separation to respectively obtain oil and water;
step 7): the obtained oil is dried by a dryer (81) and then collected in an oil recovery tank (82), and the obtained water is collected in a spraying water storage tank (7) and is continuously used for spraying in a spraying water washing device (2).
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| CN113617156A (en) * | 2021-08-04 | 2021-11-09 | 邢台盛懋电镀有限公司 | Electroplating chromic acid recovery and purification device and method |
| CN115253357A (en) * | 2022-06-13 | 2022-11-01 | 湖北中烟工业有限责任公司 | High-efficient condensation enrichment device |
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