CN103172196A - Treatment and recycling technology of white water in production of paper-making reconstituted tobacco - Google Patents
Treatment and recycling technology of white water in production of paper-making reconstituted tobacco Download PDFInfo
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- CN103172196A CN103172196A CN2013100608667A CN201310060866A CN103172196A CN 103172196 A CN103172196 A CN 103172196A CN 2013100608667 A CN2013100608667 A CN 2013100608667A CN 201310060866 A CN201310060866 A CN 201310060866A CN 103172196 A CN103172196 A CN 103172196A
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Abstract
The invention discloses a treatment and recycling technology of white water in the production of a paper-making reconstituted tobacco. The technology comprises the following steps of: flocculating the white water at a wet part in a production process of the reconstituted tobacco substrate by adding in a flocculating agent, carrying out precipitation pretreatment, filtering clear white water pumped from a clear white water tank by using a multi-disc filter with a self-purification function, causing the ultra-clear white water after the filtration to be collected in an ultra-clear white water tank for storage to prepare for recycling, and returning the automatically discharged solid content in the filtration process to a tapered sedimentation tank. The technology is very applicable to the continuous treatment of the white water in the production process of the reconstituted tobacco substrate, free from back flush, low in treatment cost, good in treatment effect, and 70-80% in solid content removal rate, the ultra-clear white water after the treatment can completely replace clear water to be reused for screen washing, low-pressure spraying and screen edge sealing, the removed solid content dreg can be added into a slurry according to a proportion, waste water drain is reduced, environment protection pressure is relived, raw materials are saved, and economic benefit is obvious.
Description
Technical field
The plain boiled water that the present invention relates in a kind of papermaking-method reconstituted tobaccos production is processed reuse technology, be specially the reconstituted tobacco substrate is manufactured paper with pulp in process wet end plain boiled water by after adding the flocculation agent wadding and gather and precipitating pre-treatment, adopt again the pure water of many disk filters depth type filtration excess of export, alternative clear water is back to washes net, Low-pressure spray and selvage sealing, belongs to cigarette industry reconstituted tobacco production technical field.
Background technology
Wet type papermaking-method reconstituted tobaccos (claiming again tobacco sheet) is produced the same with traditional paper industry, water and water heavy polluter, particularly to the pollution at water source, at present a lot of papermaking enterprises are all that the sewage that production line of paper machine is discharged is processed rear discharging up to standard, for ensureing the water balance of production line of paper machine, discharge how much sewage every day and will replenish how many clear water.By paper technology as can be known, contain the vegetable fibre pulp-water plain boiled water that (abbreviation wet end) deviate from from web part of paper machine to press part, but fiber recovery, even the totally enclosed cyclically utilizing of plain boiled water after appropriateness is processed.the wet type paper-process reconstituted tobacco is manufactured paper with pulp and has substantially been continued to use the slurrying of traditional papermaking, papermaking process, utilize the hydrogen bonded power between fiber that fiber is linked together, difference is that raw material and paper making raw material difference that reconstituted tobacco adopts are very large, the slurry composition that makes thus is also different, main manifestations is: the fibrous material in reconstituted tobacco comprises cigarette fiber (offal, offal, tobacco powder, inferior tobacco etc.) and outer fibre (wood pulp or jute pulp macrofiber), its China and foreign countries' fine composition ≯ 10%, due to offal, in inferior tobacco, fibre content is few, non-fibre fractionation is more, offal, tobacco powder slurry are non-fibrocyte component substantially, and when this slurry feature made reconstituted tobacco manufacture paper with pulp, the plain boiled water that plain boiled water is processed and recovery method can not be indiscriminately imitated in traditional paper technology was fully processed recovery method.
The plain boiled water processing mode of manufacturing paper with pulp known reconstituted tobacco adopts precipitation and 100～200 orders sieve filter type that shakes more, poor processing effect, and the solid substance clearance only reaches 20～30%, and after processing, the cyclically utilizing rate is low.Adopt chemical flocculation to process the tobacco sheet waste water of manufacturing paper with pulp, remove the suspended substance such as Mierocrystalline cellulose in waste water, hemicellulose or " electrochemical process is improved the research of tobacco sheet wastewater biodegradability " (in January, 2012 Master degree candidate of Zhejiang Prov Industrial And Commercial University paper) by charge neutralization and adopt electricity flocculation-electrochemical oxidation coupling processing tobacco sheet wastewater method, be all in order to satisfy the emission request of GB9878-1996 integrated wastewater discharge standard, comprehensive treating process reconstituted tobacco production line comprises the various types of method for waste water such as plain boiled water.Analyze from security, suitability, be not suitable for the plain boiled water reuse.
plain boiled water for traditional paper production line is processed reuse, domestic and international published technology, in patent or document, the coagulant aids of adding is arranged, drum-type is filtered or ultrafiltration, air supporting, the treatment processs such as polydisc recovery, because the paper pulp fiber composition is single, high purity, the plain boiled water processing mode is simply efficient, as Chinese utility model patent " White water separator of paper production " (application number: 91207603.8) recycled fiber from paper industry plain boiled water, the equipment of filler and clear water, be characterized in plain boiled water is sneaked into a small amount of flocculant and the form by pulse flow, produce solid-liquid separation at settling pocket after uniform water distribution, make fiber and filler from the bottom output of separator, clear water overflows from top and leads, process plain boiled water with this separator, the rate of recovery of fiber and filler can reach more than 99%, but adopt separately this equipment to carry out white water recycle in the reconstituted tobacco production line and can't reach the cigarette fiber, outer fibre and filler recovery rate are more than 60%, (application number: 200610122128.0) adopt step to be: A send mthod of white water from paper making just and processes patent of invention " a kind for the treatment of reuse technique for paper-making white-water ", to remove most of fiber and the impurity in plain boiled water, the clear liquid that B obtains after just processing is conveyed into disc filter, the water outlet of disc filter enters paper manufacturing systems as water of productive use, C carries out back flushing to disc filter, backwash water is back to white water chest and carries out just processing, its weak point is: this technique of ⑴ is mainly used in large-scale paper mill, the equipment used cost is high, working cost is high, be unsuitable for producing per year 20,000 tons and following small-sized reconstituted tobacco production line, ⑵ for the situation that occupies the majority of fiber fines and non-fibre fractionation in reconstituted tobacco slurry raw material, and plastics chip filtering net very easily stops up filter screen when using, and certainly will cause the back flushing frequency high, ⑶ need a large amount of tap water during back flushing, reduced the plain boiled water processing efficiency, (application number: the technique that 200410086580.7) adopts is similar to above-mentioned " a kind for the treatment of reuse technique for paper-making white-water " for patent of invention " treatment process of mthod of white water from paper making ", difference is that uf processing is implemented in the air supporting water outlet, the filter membrane that adopts comprises polysulfones, polyacrylonitrile, polyvinylidene difluoride (PVDF) or cellulose acetate class ultra-filtration membrane, and weak point is need to be with the tap water filter membrane that recoils equally, (application number: 201010582965.8) disclosed step does not relate to saveall and recovery technology to patent of invention " a kind of recycle process of white water of papermaking system ", new patent " a kind of ordered batch type treating system for white water from paper making " (application number: 01234166.5) be a plurality of circular tank combinations, the recovering effect of its fiber and filler and " White water separator of paper production " (application number: 91207603.8) similar.
Summary of the invention
the objective of the invention is to ask a question for background technology, the plain boiled water that discloses in a kind of papermaking-method reconstituted tobaccos production is processed reuse technology, by after adding the flocculation agent wadding and gather and precipitating pre-treatment with wet end plain boiled water in reconstituted tobacco substrate production process, adopt again the many disk filters depth type filtration treatment process with self-purification function, the plain boiled water that is highly suitable in reconstituted tobacco substrate production process is processed continuously, non-recoil is washed, processing cost is low, treatment effect is good, the solid substance clearance reaches 70～80%, super pure water after processing can replace clear water to be back to washing net fully, Low-pressure spray and selvage sealing, the solid substance bits of removing also can be added in slurry in proportion, reduced sewage discharge, alleviate environmental protection pressure, saved raw material, remarkable in economical benefits.
Technical scheme of the present invention is: the plain boiled water during a kind of papermaking-method reconstituted tobaccos is produced is processed reuse technology, comprises elementary flocculation sediment processing and sterilization, the precision processing of many disk filtration, super pure water reuse; Described elementary flocculation sediment treatment step is to adopt plain boiled water that known technology produces wet end and flocculation agent to pump simultaneously solid substance in flocculation to the taper settling tank, precipitation plain boiled water by preset proportion, and through the bottom discharge of taper settling tank, keep in to pure pond from the pure water afflux that taper settling tank upper isopipe is discharged; Add by the setting-up time interval in described tapered settling bowl and set the concentration sterilant; Described super pure water reusing plan is that the super pure water that will be stored in super pure pond is used for washing net, Low-pressure spray and selvage sealing; It is characterized in that: described many disk filtration precision processing is to adopt the many disk filters with self-purification function to filter the pure water that pumps in described pure pond, super pure water afflux after filtration stores in order to reuse to super pure pond, and the solid substance of automatically discharging in filtration procedure turns back in tapered settling tank.Its beneficial effect is: but with many disk filter continuous filtrations of self-purification function, need not recoil.
Plain boiled water during a kind of papermaking-method reconstituted tobaccos as above is produced is processed reuse technology, it is characterized in that: the filter screen that described many disk filters adopt is 400～500 order filter clothes.
Plain boiled water during a kind of papermaking-method reconstituted tobaccos as above is produced is processed reuse technology, and it is characterized in that: described flocculation agent is polyacrylamide, or alum or Tai-Ace S 150.
Plain boiled water during a kind of papermaking-method reconstituted tobaccos as above is produced is processed reuse technology, it is characterized in that: in described taper settling tank, the sterilant of content of microorganisms is once controlled in interpolation in every 3 hours, described sterilant is the mixture of the different Anthelvet of 2-methyl-4--3-ketone and the different Anthelvet of 2-methyl-5-chloro-4--3-ketone, and the concentration that adds of described sterilant is 25～35ppm.
Plain boiled water during a kind of papermaking-method reconstituted tobaccos as above is produced is processed reuse technology, it is characterized in that: the solid substance after described flocculation of discharging in the taper settling tank, precipitation can be back to use in slurry.
the invention has the beneficial effects as follows: but due to the many disk filter continuous filtrations with self-purification function, need not recoil, and the filter cloth order number that adopts is higher, therefore after pure water filtration, the total solid clearance reaches 70～80%, super pure water after filtration can satisfy alternative clear water fully and wash net for wet end, Low-pressure spray or selvage seal request, the bits of automatically discharging in filtration procedure turn back in tapered settling tank, the solid substance bits that discharge taper settling tank bottom can be added in slurry in proportion, reduced sewage discharge, alleviate environmental protection pressure, saved raw material, economic benefit is aobvious acute.
Description of drawings
Fig. 1 is embodiment of the present invention process flow diagram.
Mark in accompanying drawing: 1-flocculation agent is deposited the pond, 2-white water chest, 3-taper settling tank, 4-overflow groove, 5-pure pond, 6-many disk filters, 7-super pure pond.
Embodiment
Be described in further detail below in conjunction with the enforcement of accompanying drawing to technical scheme:
the plain boiled water that is illustrated in figure 1 as in a kind of papermaking-method reconstituted tobaccos production of the present invention is processed recovering process flow figure, comprise elementary flocculation sediment processing, the precision processing of many disk filters, comprise that polymeric flocculent deposits pond 1, white water chest 2, taper settling tank 3, overflow groove 4, pure pond 5, many disk filters 6, super pure pond 7 and pump, valve etc., the plain boiled water that on the reconstituted tobacco production line, in the substrate moulding process, wet end produces leaves in white water chest 2, flocculation agent leaves flocculation agent in to be deposited in pond 1, center, taper settling tank top is plain boiled water entrance and flocculation agent entrance, the bottom slag notch, be with outside taper settling tank top and collect the overflow groove 4 that pure water overflows.
Elementary flocculation sediment treatment step is: plain boiled water and flocculation agent that wet end produces are pumped to the taper settling tank simultaneously by preset proportion, solid substance in flocculation, precipitation plain boiled water, and through the bottom discharge of taper settling tank, the solid substance of discharge can add being back to use in slurry in proportion.In the present embodiment, flocculation agent is that molecular weight is 800～1,000 ten thousand cationic-type polyacrylamide, flocculation agent first is added to after flocculation agent is deposited the solution that is dissolved into 0.1～0.2% concentration in the pond in the taper settling tank again, and the add-on of flocculation agent in plain boiled water is 50～100ppm.The pure water afflux that autoprecipitation pond upper isopipe is discharged is kept in to pure pond; In the taper settling tank, the sterilant of content of microorganisms is once controlled in interpolation in every 3 hours, the sterilant model is: the mixture of (the different Anthelvet of 2-methyl-4--3-ketone) and (the different Anthelvet of 2-methyl-5-chloro-4--3-ketone), the concentration that adds of sterilant is 25～35ppm.
Many disk filtration precision processing step is: adopt the many disk filters with self-purification function to filter the pure water that pumps from pure pond, the filter screen that many disk filters adopt is 400～500 order filter clothes, super pure water afflux after filtration stores in order to reuse to super pure pond, and the solid substance bits of automatically discharging in filtration procedure turn back in tapered settling tank.
Super pure water reusing plan is: the super pure water that will be stored in super pure pond is used for washing net, Low-pressure spray and selvage sealing.
The invention has the beneficial effects as follows: but due to the many disk filter continuous filtrations with self-purification function, need not recoil, and the filter cloth order number that adopts is higher, therefore after pure water filtration, the total solid clearance reaches 70～80%, super pure water after filtration can satisfy alternative clear water fully and wash net, Low-pressure spray or selvage seal request for wet end, and the bits of automatically discharging in filtration procedure turn back in tapered settling tank, and the solid substance bits of taper settling tank bottom discharge can be added in slurry in proportion.Producing 20000 tons of reconstituted tobacco production lines per year by certain company calculates, can process every day and fully recovering～1000 ton super pure water, 1000 tons of clear water usage quantitys have nearly namely been saved, be equivalent to reduce every year the quantity of wastewater effluent more than 300,000 tons, alleviate environmental protection pressure, saved raw material, remarkable in economical benefits.
Below by reference to the accompanying drawings the specific embodiment of the present invention is described, but these explanations can not be understood to limit scope of the present invention, any change of carrying out on claim of the present invention basis is all protection scope of the present invention.
Claims (5)
1. the plain boiled water during a papermaking-method reconstituted tobaccos is produced is processed reuse technology, comprises elementary flocculation sediment processing and sterilization, the precision processing of many disk filtration, super pure water reuse; Described elementary flocculation sediment treatment step is to adopt plain boiled water that known technology produces wet end and flocculation agent to pump simultaneously solid substance in flocculation to the taper settling tank, precipitation plain boiled water by preset proportion, and through the bottom discharge of taper settling tank, keep in to pure pond from the pure water afflux that taper settling tank upper isopipe is discharged; Add by the setting-up time interval in described tapered settling bowl and set the concentration sterilant; Described super pure water reusing plan is that the super pure water that will be stored in super pure pond is used for washing net, Low-pressure spray and selvage sealing; It is characterized in that: described many disk filtration precision processing is to adopt the many disk filters with self-purification function to filter the pure water that pumps in described pure pond, super pure water afflux after filtration stores in order to reuse to super pure pond, and the solid substance of automatically discharging in filtration procedure turns back in tapered settling tank.
2. the plain boiled water during a kind of papermaking-method reconstituted tobaccos as claimed in claim 1 is produced is processed reuse technology, it is characterized in that: the filter screen that described many disk filters adopt is 400～500 order filter clothes.
3. the plain boiled water during a kind of papermaking-method reconstituted tobaccos as claimed in claim 1 is produced is processed reuse technology, and it is characterized in that: described flocculation agent is polyacrylamide, or alum or Tai-Ace S 150.
4. the plain boiled water during a kind of papermaking-method reconstituted tobaccos as claimed in claim 1 is produced is processed reuse technology, it is characterized in that: in described taper settling tank, the sterilant of content of microorganisms is once controlled in interpolation in every 3 hours, described sterilant is the mixture of the different Anthelvet of 2-methyl-4--3-ketone and the different Anthelvet of 2-methyl-5-chloro-4--3-ketone, and the concentration that adds of described sterilant is 25～35ppm.
5. the plain boiled water during a kind of papermaking-method reconstituted tobaccos as claimed in claim 1 is produced is processed reuse technology, it is characterized in that: the solid substance after described flocculation of discharging in the taper settling tank, precipitation can be back to use in slurry.
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| CN2013100608667A CN103172196A (en) | 2013-02-27 | 2013-02-27 | Treatment and recycling technology of white water in production of paper-making reconstituted tobacco |
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| CN2013100608667A CN103172196A (en) | 2013-02-27 | 2013-02-27 | Treatment and recycling technology of white water in production of paper-making reconstituted tobacco |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103829365A (en) * | 2014-03-18 | 2014-06-04 | 广东省金叶科技开发有限公司 | Corrosion-prevention method for paper-making process reconstituted tobacco production white water system |
| CN104328707A (en) * | 2014-10-31 | 2015-02-04 | 玖龙纸业（太仓）有限公司 | White water treatment method and device for paper-making machine |
| CN104432471A (en) * | 2014-12-29 | 2015-03-25 | 安徽中烟再造烟叶科技有限责任公司 | Recycling method for manufacturing white water of reconstituted tobacco |
| CN105768180A (en) * | 2016-03-25 | 2016-07-20 | 广东省金叶科技开发有限公司 | Comprehensive utilization method of waste liquor produced during production of paper-making process reconstituted tobacco |
| CN106219826A (en) * | 2016-09-09 | 2016-12-14 | 湖北中烟工业有限责任公司 | A kind of papermaking-method reconstituted tobaccos plain boiled water staged care step reclaiming system and method |
| CN107487875A (en) * | 2017-08-24 | 2017-12-19 | 上海烟草集团有限责任公司 | A kind of papermaking-method reconstituted tobaccos are manufactured paper with pulp white water recycling handling process |
| CN108203189A (en) * | 2018-01-23 | 2018-06-26 | 河南卷烟工业烟草薄片有限公司 | A kind of novel papermaking method reconstituted tobacco plain boiled water purified treatment reclaiming system |
| CN109399816A (en) * | 2017-08-17 | 2019-03-01 | 玖龙纸业(重庆)有限公司 | The processing method of middle water in a kind of Sewage for paper machine spray system |
| CN109574276A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of wastewater treatment method |
| CN109574314A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of water treatment system of papermaking green end |
| CN109594387A (en) * | 2018-12-28 | 2019-04-09 | 江苏理文造纸有限公司 | A kind of plain boiled water processing method of papermaking green end |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2785683Y (en) * | 2005-05-19 | 2006-06-07 | 孟广桢 | Net-type continuous self-cleaning filter |
| CN1919753A (en) * | 2006-09-08 | 2007-02-28 | 臧立新 | Treatment reuse technique for paper-making white-water |
| US20080116149A1 (en) * | 2006-10-05 | 2008-05-22 | Dick Paul H | System and method for the disinfection of irrigation water |
| CN101838945A (en) * | 2010-06-23 | 2010-09-22 | 永州湘江纸业有限责任公司 | Papermaking wastewater recycling method |
-
2013
- 2013-02-27 CN CN2013100608667A patent/CN103172196A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2785683Y (en) * | 2005-05-19 | 2006-06-07 | 孟广桢 | Net-type continuous self-cleaning filter |
| CN1919753A (en) * | 2006-09-08 | 2007-02-28 | 臧立新 | Treatment reuse technique for paper-making white-water |
| US20080116149A1 (en) * | 2006-10-05 | 2008-05-22 | Dick Paul H | System and method for the disinfection of irrigation water |
| CN101838945A (en) * | 2010-06-23 | 2010-09-22 | 永州湘江纸业有限责任公司 | Papermaking wastewater recycling method |
Non-Patent Citations (2)
| Title |
|---|
| 李友明 等: "处理造纸法烟草薄片生产废水的试验研究", 《中国给水排水》, vol. 24, no. 3, 29 February 2008 (2008-02-29), pages 53 - 55 * |
| 谭兴富 等: "如何提高圆盘真空过滤机的过滤效果", 《应用能源技术》, no. 5, 31 December 2007 (2007-12-31) * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103829365A (en) * | 2014-03-18 | 2014-06-04 | 广东省金叶科技开发有限公司 | Corrosion-prevention method for paper-making process reconstituted tobacco production white water system |
| CN104328707A (en) * | 2014-10-31 | 2015-02-04 | 玖龙纸业（太仓）有限公司 | White water treatment method and device for paper-making machine |
| CN104432471A (en) * | 2014-12-29 | 2015-03-25 | 安徽中烟再造烟叶科技有限责任公司 | Recycling method for manufacturing white water of reconstituted tobacco |
| CN104432471B (en) * | 2014-12-29 | 2016-03-02 | 安徽中烟再造烟叶科技有限责任公司 | Reconstituted tobacco is manufactured paper with pulp the reuse method of plain boiled water |
| CN105768180A (en) * | 2016-03-25 | 2016-07-20 | 广东省金叶科技开发有限公司 | Comprehensive utilization method of waste liquor produced during production of paper-making process reconstituted tobacco |
| CN106219826A (en) * | 2016-09-09 | 2016-12-14 | 湖北中烟工业有限责任公司 | A kind of papermaking-method reconstituted tobaccos plain boiled water staged care step reclaiming system and method |
| CN106219826B (en) * | 2016-09-09 | 2022-06-24 | 湖北中烟工业有限责任公司 | Grading treatment and cascade recycling system and method for white water of paper-making reconstituted tobacco |
| CN109399816A (en) * | 2017-08-17 | 2019-03-01 | 玖龙纸业(重庆)有限公司 | The processing method of middle water in a kind of Sewage for paper machine spray system |
| CN107487875A (en) * | 2017-08-24 | 2017-12-19 | 上海烟草集团有限责任公司 | A kind of papermaking-method reconstituted tobaccos are manufactured paper with pulp white water recycling handling process |
| CN108203189B (en) * | 2018-01-23 | 2020-11-20 | 河南卷烟工业烟草薄片有限公司 | White water purification treatment recycling system for paper-making reconstituted tobacco |
| CN108203189A (en) * | 2018-01-23 | 2018-06-26 | 河南卷烟工业烟草薄片有限公司 | A kind of novel papermaking method reconstituted tobacco plain boiled water purified treatment reclaiming system |
| CN109574276A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of wastewater treatment method |
| CN109574314A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of water treatment system of papermaking green end |
| CN109594387A (en) * | 2018-12-28 | 2019-04-09 | 江苏理文造纸有限公司 | A kind of plain boiled water processing method of papermaking green end |
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Application publication date: 20130626 |