CN203710873U - Purification device for synthetic leather process - Google Patents
Purification device for synthetic leather process Download PDFInfo
- Publication number
- CN203710873U CN203710873U CN201420079735.3U CN201420079735U CN203710873U CN 203710873 U CN203710873 U CN 203710873U CN 201420079735 U CN201420079735 U CN 201420079735U CN 203710873 U CN203710873 U CN 203710873U
- Authority
- CN
- China
- Prior art keywords
- synthetic leather
- spray chamber
- dust removal
- chamber
- waste gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002649 leather substitute Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000000746 purification Methods 0.000 title abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 239000000428 dust Substances 0.000 claims abstract description 27
- 239000002912 waste gas Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 23
- 239000010985 leather Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims description 32
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 238000012856 packing Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 abstract description 14
- 238000005507 spraying Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 23
- 239000000463 material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 206010000269 abscess Diseases 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910001872 inorganic gas Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model provides a purification device for a synthetic leather process. Dust and harmful substances in waste gas produced during the production of PU (polyurethane) leather can be completely purified, and environmental protection requirements can be met. The purification device for the synthetic leather process comprises a dust removal chamber and a spraying cavity, wherein the dust removal chamber is provided with a gas inlet and a gas outlet; the gas inlet is used for guiding in the waste gas produced during the production of synthetic leather; a plurality of layers of filter screens are arranged along the flowing direction of the waste gas in the dust removal chamber; electrostatic plates opposite to each other are arranged between the filter screens; the gas outlet is connected to a gas inlet opening in the lower sidewall of the spraying cavity through a pipeline and a fan; the spraying cavity is provided with a spraying head connected through a conduit; a liquid recovery plate is arranged at the bottom of the spraying cavity; a liquid outlet is formed in the liquid recovery plate.
Description
Technical field
The utility model relates to leather manufacture technology, more specifically, relates to a kind of synthetic leather technique purifier.
Background technology
Along with population growth and application are expanded, the demand multiplication of the mankind to leather substance, a limited number of natural leathers can not meet this demand of people already.Through the continuous research and development of more than 20 years, synthetic leather all obtained increasing rapidly in product quality, kind or output.Its performance more and more approaches natural leather, and some performance even surpasses natural leather, has reached the degree of dividing with the true and false difficulty of natural leather, in the mankind's daily life in occupation of consequence very.Now, in the middle of interior decoration, sofa fabric, automotive trim, clothes, footwear and case and bag etc. leather goods, it is occupied that sizable share is synthesized leather, day by day obtains affirming of market.
PU leather belongs to high-end product in current artificial leather product.PU leather has the bundle superfine fibre structure similar to natural leather, it is very approaching in outward appearance and performance with natural leather after processing is processed, and at aspects such as mechanical strength, anti-chemical corrosivity, ventilative moisture absorption, resistance to deformations, be better than natural leather, it is that traditional artificial leather cannot be compared in pliability, rippability, durability degree, the performance made aspect face processing.The ventilative leather of wet method PU and superfine fibre base material have higher technology content, are the main development directions of synthetic leather manufacturing technology from now on.
The production of PU leather generally adopts wet processing, conventionally using nonwoven or felt as base material, in containing the immersion trough of dimethyl formamide, immerse resin sizing, then through solidifying in advance, after the operation such as dryness finalization, enter coating platform and smear polyurethane slurry, then enter coagulating basin and carry out freezing film processing.In process of setting, by displacement, form abscess.Flushing repeatedly with in the epithelium process tank of abscess, after removing residual dimethyl formamide, generates bass by oven dry.Bass could finally be made into PU leather through follow-up processing again.
One of subject matter of above-mentioned production technology is to bring a large amount of pollutants.It is a kind of mixed type pollutant that PU leather is manufactured produced pollution gas, comprises dust and toxic organic compound.If entered in atmosphere, can have a strong impact on ecological environment, the periphery masses healthy brought to harm.The pollutant producing in PU leather being produced in prior art is processed according to general industrial waste gas, main by means removal dust and some inorganic gas wherein such as filtration, recovery, but organic matter wherein cannot be realized efficiently, be purified thoroughly, can not reach completely and administer the requirement of polluting, and thoroughly not produce the wasting of resources because reclaiming.
Utility model content
For the demand of the prior art, the utility model provides a kind of synthetic leather technique purifier, can fully purify in the production of PU leather and generate dust and the harmful substance in waste gas, meet the requirement of environmental protection.
Synthetic leather technique purifier described in the utility model, is characterized in that, comprises dust removal chamber and spray chamber, and wherein said dust removal chamber has air inlet and gas outlet, the waste gas that air inlet is produced for importing synthetic leather; Dust removal chamber along waste gas streams to some floor screen packs are set, has static board respect to one another in inside between described screen pack; Described gas outlet is connected to through pipeline and blower fan the air inlet openings that is positioned at spray chamber lower sides; Described spray chamber has the sprinkler head connecting by conduit; The bottom in spray chamber has liquids recovery dish, on described liquids recovery dish, has liquid outlet.
Preferably, described synthetic leather technique purifier comprises gas skirt and the discharge duct that is positioned at PU leather production line top, and described discharge duct is collected to total air escape pipe, and total air escape pipe is connected to the air inlet of dust removal chamber.
Preferably, the blower fan between the gas outlet of dust removal chamber and the air inlet openings in spray chamber is frequency conversion fan.
Preferably, the described sprinkler head in spray chamber is spiral nozzle.
Preferably, described spray chamber has Corrugated Structured Packings, liquid re-distributor, gauze structured packing, ripple packing and tank type liquid distributor above described sprinkler head.
Preferably, the liquid outlet in described spray chamber is connected to absorption liquid basin, and spray chamber comprises fluid level controller.
Preferably, in described spray chamber, comprise the online concentration determination instrument of DMF.
Visible, the utility model can carry out to the waste gas in synthetic leather production dust removal and harmful organic spray-absorption, makes harmful substance wherein be fully absorbed purification, and the solution absorbing after harmful organic matter can be used for realizing material recovery.In the waste gas of empirical tests after the utility model is processed, DMF mass concentration is less than 40mg/ cubic meter, directly qualified discharge is to air, absorption tower can reach more than 95% the absorptivity of DMF, is conducive to reduce pollute and economize on resources, and has good technique effect and economic benefit.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the dust removal cell structure schematic diagram according to the utility model embodiment;
Fig. 2 is the spray cavity configuration schematic diagram according to the utility model embodiment.
The specific embodiment
In order to make those skilled in the art person understand better the technical solution of the utility model, and above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with embodiment and embodiment accompanying drawing, the utility model is described in further detail.
Synthetic leather technique purifier of the present utility model is seen on the whole and is comprised dust removal chamber and spray chamber.The gas skirt and the discharge duct that are arranged in PU leather production line top are collected the waste gas that production process produces, and described discharge duct is collected to total air escape pipe, and total air escape pipe is connected to the air inlet of dust removal chamber.Dust removal chamber is for removing the solid state powder particle of PU leather process gas.Waste gas input spray chamber after dedusting, its main component is DMF, according to DMF feature soluble in water, selects water as absorbent, in the mode spraying, absorbs.Because DMF content in waste gas is lower, require absorbent fully to contact with waste gas, enlarge active surface and turbulent extent, for this reason, waste gas is delivered to spray bottom, chamber by air-foil fan, and from top, the form with atomization sprays absorbent, so that to be provided larger gas, liquid contact area and time of contact, the utility model adopts twin-stage adverse current, twin-stage to receive the absorption technique of mist, and the DMF in waste gas is fully absorbed, and produces DMF organic liquor; Remainder of exhaust gas is recycled and carries out double absorption, until reach discharge standard, by exhaust outlet, is directly discharged.
Fig. 1 is the dust removal cell structure schematic diagram according to the utility model embodiment.Dust removal chamber has air inlet 11 and gas outlet 12, the waste gas that air inlet 11 is produced for importing synthetic leather, 12 discharges from gas outlet after dedusting; Dust removal chamber along waste gas streams to some floor screen pack 13-15 are set, has static board 16,17 respect to one another in inside between described screen pack, utilize the double action of filtration and Electrostatic Absorption to realize dedusting.
Fig. 2 is the spray cavity configuration schematic diagram according to the utility model embodiment.The described gas outlet 12 of dust removal chamber is connected to through pipeline and blower fan the air inlet openings 21 that is positioned at spray chamber lower sides, and the described blower fan between the two is frequency conversion fan 22, thereby reduces as far as possible energy consumption and keep operating steadily.Waste gas enters spray bottom, chamber by frequency conversion fan, and the top in described spray chamber has sprinkler head 23; Sprinkler head can adopt spiral nozzle, to realize the abundant atomization of water in sprinkling process, provides larger contact area and longer time of contact.After waste gas contacts with spray liquid, part DMF is absorbed, and the bottom in spray chamber has liquids recovery dish 24, on described liquids recovery dish, has liquid outlet 25, by pipeline, connects described liquid outlet 25 and absorption liquid basin.When the DMF mass fraction in circulating absorption solution reaches 7%～8%, by the online concentration controller 26 of DMF, transmit signal, by starting automatic regulating valve 27, high concentration absorption liquid is delivered to absorption liquid basin by pump 28.Residual gas carries out double absorption.
Described spray chamber has Corrugated Structured Packings 29, liquid re-distributor 210, gauze structured packing 211, ripple packing 212 and tank type liquid distributor 213 above described sprinkler head 23, forms packing material absorbing section.Waste gas enters this packing material absorbing section from bottom to top and further absorbs the DMF in waste gas, this packing material absorbing section hypomere adopts the corrugated regular filler 29 of CB mono-250Y type, epimere adopts BX-500 type gauze structured packing 211, and it has the advantages such as specific area is large, the height equivalent to one theoretical plate (HETP) is low, pressure drop is little; Waste gas by the receipts mist layer of the thick CB mono-250Y type ripple packing 212 of two-layer 10cm, to reduce entrainment, further absorbs DMF again, reduces the content of DMF in emptying waste gas; The top on absorption tower is an efficient tank type liquid distributor 213, and water enters from tower top, through tank type liquid distributor 213, makes water distribution even, and droplet is little, and water, completes the absorption to DMF with waste gas counter current contacting from top to bottom.After purifying, in the waste gas of discharge, DMF mass concentration is less than 40mg/m, and by the direct qualified discharge of exhaust outlet, the absorptivity of whole absorption tower DMF reaches 95%.
Visible, the utility model can carry out to the waste gas in synthetic leather production dust removal and harmful organic spray-absorption, make harmful substance wherein be fully absorbed purification, the solution absorbing after harmful organic matter can be used for realizing material recovery, be conducive to reduce and pollute and economize on resources, there is good technique effect and economic benefit.
This use is novel can also be applied in miscellaneous equipment; Size and quantity in more than describing are only all informative, and those skilled in the art can select suitable application size according to actual needs, and do not depart from scope of the present utility model.Protection domain of the present utility model is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the utility model discloses, and the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (7)
1. a synthetic leather technique purifier, is characterized in that, comprises dust removal chamber and spray chamber, and wherein said dust removal chamber has air inlet and gas outlet, the waste gas that air inlet is produced for importing synthetic leather; Dust removal chamber along waste gas streams to some floor screen packs are set, has static board respect to one another in inside between described screen pack; Described gas outlet is connected to through pipeline and blower fan the air inlet openings that is positioned at spray chamber lower sides; Described spray chamber has the sprinkler head connecting by conduit; The bottom in spray chamber has liquids recovery dish, on described liquids recovery dish, has liquid outlet.
2. synthetic leather technique purifier according to claim 1, it is characterized in that,, described synthetic leather technique purifier comprises gas skirt and the discharge duct that is positioned at PU leather production line top, described discharge duct is collected to total air escape pipe, and total air escape pipe is connected to the air inlet of dust removal chamber.
3. synthetic leather technique purifier according to claim 2, is characterized in that, the blower fan between the gas outlet of dust removal chamber and the air inlet openings in spray chamber is frequency conversion fan.
4. synthetic leather technique purifier according to claim 3, is characterized in that, the described sprinkler head in spray chamber is spiral nozzle.
5. synthetic leather technique purifier according to claim 4, is characterized in that, described spray chamber has Corrugated Structured Packings, liquid re-distributor, gauze structured packing, ripple packing and tank type liquid distributor above described sprinkler head.
6. synthetic leather technique purifier according to claim 5, is characterized in that, the liquid outlet in described spray chamber is connected to absorption liquid basin, and spray chamber comprises fluid level controller.
7. synthetic leather technique purifier according to claim 6, is characterized in that, comprises the online concentration determination instrument of DMF in described spray chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079735.3U CN203710873U (en) | 2014-02-24 | 2014-02-24 | Purification device for synthetic leather process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079735.3U CN203710873U (en) | 2014-02-24 | 2014-02-24 | Purification device for synthetic leather process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203710873U true CN203710873U (en) | 2014-07-16 |
Family
ID=51150075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079735.3U Expired - Lifetime CN203710873U (en) | 2014-02-24 | 2014-02-24 | Purification device for synthetic leather process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203710873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201492A (en) * | 2019-07-03 | 2019-09-06 | 深圳市百瑞空气处理设备有限公司 | Coating machine organic gas recovery system |
-
2014
- 2014-02-24 CN CN201420079735.3U patent/CN203710873U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201492A (en) * | 2019-07-03 | 2019-09-06 | 深圳市百瑞空气处理设备有限公司 | Coating machine organic gas recovery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
|
| CX01 | Expiry of patent term |