CN104328707A - White water treatment method and device for paper-making machine - Google Patents
White water treatment method and device for paper-making machine Download PDFInfo
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- CN104328707A CN104328707A CN201410603650.5A CN201410603650A CN104328707A CN 104328707 A CN104328707 A CN 104328707A CN 201410603650 A CN201410603650 A CN 201410603650A CN 104328707 A CN104328707 A CN 104328707A
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- water
- machine
- white water
- plain boiled
- paper machine
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
Abstract
The invention relates to a white water treatment method and device for a paper-making machine. The method comprises the following steps that 1, white water generated by a paper-making net in a paper-making workshop is conveyed ton an under-net white water pool; 2, the white water in the under-net white water pool is conveyed to a multi-disc concentration machine, then, thick pulp, cloudy white water and clean white water are generated, and the thick pulp, the cloudy white water and the clean white water respectively enter a pulp preparing pool, a cloudy white water pool and a clean white water pool of the paper-making machine; 3, the clean white water is conveyed to an air floatation machine to be subjected to air floatation treatment, and is then conveyed to the paper-making workshop to be recovered and utilized, and the thick pulp is conveyed to the pulp preparing pool to be recovered and used as paper-making pulp; the cloudy white water is conveyed to the input end of the multi-disc concentration machine or the under-net white water pool to be re-treated by the multi-disc concentration machine.
Description
Technical field
the present invention relates to a kind of processing method and device of paper machine white water.
Background technology
in the paper technology of prior art, after white water system utilizes, in plain boiled water, sicker and anionic trash increase, and cause wet-end chemicals consumption to increase.In production process, sicker is easily bonded on forming web, felt, and wet end is shaping bad, and felt banner dehydration inequality and water separation capability decline, and causes paper-forming evenness, banner moisture content inequality and paper machine operation.Especially in the winter time, paper machine is regularly shut down, and cleans the sicker on dry net and felt, has a strong impact on paper machine production capacity.Sicker adheres to above paper simultaneously, can produce paper defects, affect the use of paper, supplement clear water to replace plain boiled water, improve plain boiled water cleannes through machine water pond of being everlasting, and reduces the sicker in plain boiled water and anionic trash.
Summary of the invention
technical problem to be solved by this invention overcomes the deficiencies in the prior art, provides a kind of processing method and device of paper machine white water.
for solving above technical problem, the present invention takes following technical scheme:
a processing method for paper machine white water, comprises the following steps:
(1) plain boiled water that the papermaking wet end of paper machine room produces is delivered to machine water pond;
(2) plain boiled water in machine water pond produces underflow, turbid plain boiled water, pure water after being delivered to polydisc thickener, and described underflow, turbid plain boiled water, pure water enter paper machine pond with slurry, turbid white water chest, pure pond respectively;
(3) pure water is delivered to air floatation machine with being delivered to paper machine room recycling after air-flotation process, and underflow is delivered to pond with slurry and reclaims as pulping; The input that turbid plain boiled water is delivered to machine water pond or polydisc thickener carries out reprocessing through polydisc thickener.
preferably, in step (2), in polydisc thickener, add bed course slurry, to increase fiber content in polydisc thickener.
preferably, in step (2), the plain boiled water in machine water pond is delivered to polydisc thickener by one first white water pump, and controls the water yield by a control valve and flowmeter.
preferably, in step (3), in pure water, first add aluminium polychloride, be delivered to air floatation machine by one second white water pump, and increase cationic flocculant in air floatation machine porch.
preferably, the plain boiled water through air-flotation process is transported to back flow water pump, is delivered to waste paper pulp-making line and paper machine white water groove respectively, to recycle pure water by one the 3rd white water pump.
the paper machine white water treating apparatus that the present invention also provides a kind of processing method of above-mentioned paper machine white water to use, described paper machine white water treating apparatus comprises:
machine water pond, it is for collecting the plain boiled water of papermaking wire-cloth;
polydisc thickener, it is for the treatment of the plain boiled water in described machine water pond, and described machine water pond plain boiled water produces underflow, turbid plain boiled water, pure water after the process of polydisc thickener;
air floatation machine, it is for carrying out air-flotation process by pure water, and the plain boiled water through air-flotation process is delivered to paper machine room recycling,
be provided with one second white water pump between described polydisc thickener and air floatation machine, be transported in air floatation machine with the pure water that polydisc thickener is produced; An aluminium polychloride adding set is provided with between described polydisc thickener and the second white water pump; Described air floatation machine porch is provided with a cationic flocculant adding set.
preferably, described paper machine white water treating apparatus also comprises: for collecting the paper machine pond with slurry of the underflow exported by polydisc thickener; For collecting the turbid white water chest of the turbid plain boiled water exported by polydisc thickener; For collecting the pure tank pond of the pure water exported by polydisc thickener.
preferably, described paper machine white water treating apparatus also comprises: be arranged on the first white water pump, control valve, the flowmeter between described machine water pond and polydisc thickener, the first described white water pump is used for the plain boiled water in described machine water pond to be delivered in polydisc thickener, and described control valve and flowmeter are for controlling the plain boiled water flow entering polydisc thickener.
preferably, described paper machine white water treating apparatus also comprises: for collecting the back flow water pump of the plain boiled water through air-flotation process after being arranged on described air floatation machine.
due to the employing of above technical scheme, the present invention compared with prior art tool has the following advantages:
plain boiled water in machine water pond is through polydisc thickener and air-flotation process, plain boiled water fine impurities point, sicker and anionic trash obviously reduce, plain boiled water cleannes improve, wet-end chemicals consumption reduces, wet end is shaping to have some improvement with press section dehydration, becomes the quality of paper and paper machine operation efficiency to improve.Become paper to reduce because of sicker paper defects relevant with impure point, reduce by the clear water displacement machine water frequency, having saved clear water, having avoided white-water system to cause temperature fluctuation because adding clear water, cause wet end dehydration fluctuation and waste paper pulp-making slurry quality, become the quality of paper more stable.
Accompanying drawing explanation
fig. 1 is the structural representation of a kind of paper machine white water treating apparatus of the present invention,
wherein: 1, papermaking wire-cloth; 2, machine water pond; 3, polydisc thickener; 4, air floatation machine; 5, paper machine pond with slurry; 6, turbid white water chest; 7, pure pond; 8, polydisc bed course stock pump; 9, back flow water pump; 10, paper machine white water groove; 11, secondary stock line; 12, the first white water pump; 13, the second white water pump; 14, the 3rd white water pump; 15, aluminium polychloride adding set; 16, cationic flocculant adding set.
Detailed description of the invention
below in conjunction with specific embodiment, the present invention is described in further details.Should be understood that these embodiments are for illustration of general principle of the present invention, principal character and advantage, and the present invention does not limit by the scope of following examples.The implementation condition adopted in embodiment can do further adjustment according to specific requirement, and not marked implementation condition is generally the condition in normal experiment.
the processing method of a kind of paper machine white water provided by the invention, comprises the following steps:
(1) papermaking wire-cloth 1 plain boiled water produced of paper machine room is delivered to machine water pond;
(2) plain boiled water in machine water pond produces underflow after being delivered to polydisc thickener 3, turbid plain boiled water, pure water, described underflow, turbid plain boiled water, pure water enters paper machine pond 5 with slurry respectively, turbid white water chest 6, pure pond 7, one first white water pump 12 is provided with between described machine water pond 2 and polydisc thickener 3, control valve is provided with regulating pondage between machine water pond 2 and white water pump, control valve and flowmeter is provided with to control the flow of plain boiled water between the first described white water pump 12 and polydisc thickener 3, in order to increase fiber content in polydisc thickener 3, polydisc thickener 3 is also connected with a polydisc bed course stock pump 8, to add bed course slurry in polydisc thickener 3, the flow that control valve and flowmeter are starched to regulate bed course is provided with between polydisc bed course stock pump 8 and polydisc thickener 3,
(3) pure water is delivered to air floatation machine 4 after air-flotation process with being delivered to paper machine room recycling, the second white water pump 13 is provided with between pure pond 7 and air floatation machine 4, a control valve is provided with between the second white water pump 13 and pure pond 7, and an aluminium polychloride adding set 15, to add aluminium polychloride in pure water, aluminium polychloride can reduce the content of anion in pure water, control valve is provided with between the second white water pump 13 and air floatation machine 4, flowmeter, cationic flocculant adding set 16, wherein cationic flocculant adding set 16 is arranged on the porch of air floatation machine 4.Plain boiled water after the air-flotation process of air floatation machine 4 is delivered in back flow water pump 9.In the effect through the 3rd white water pump 14, plain boiled water is delivered to paper machine room and recycles, in one embodiment, the plain boiled water in back flow water pump 9 is transported to paper machine white water groove 10 and secondary stock line 11 is recycled respectively through the 3rd white water pump 14.
underflow in paper machine pond with slurry 5 is delivered to pond with slurry and reclaims as pulping;
the input that turbid plain boiled water in turbid white water chest 6 is delivered to machine water pond 2 or polydisc thickener 3 carries out reprocessing through polydisc thickener 3.
in above embodiment, the fiber content of the plain boiled water that papermaking wire-cloth 1 is discharged is 0.25% ~ 0.35%, the fiber content of the bed course slurry of polydisc bed course stock pump 8 is 3.2% ~ 3.8%, the plain boiled water of described papermaking wire-cloth 1 and bed course are starched and are all transfused in polydisc thickener, and the fiber content of the plain boiled water in polydisc thickener is controlled by control valve and flowmeter.The fiber content of the underflow concentrating out through polydisc thickener is 3.8% ~ 4.2%, and the fiber content of turbid plain boiled water is 0.2% ~ 0.25%, and the fiber content of the pure water that polydisc thickener is got rid of is 0.04% ~ 0.08%.Pure water, by adding aluminium polychloride, decreases the content of wherein anion, adds cationic flocculant afterwards, produces flocculate.After the air-flotation process in air floatation machine 4, the fiber content in pure water reduces about 85%.Air supporting is to the clearance of fine impurities point, sicker and anionic trash, and controlled by the addition of adjustment aluminium polychloride and cationic flocculant, consumption strengthens, and clearance improves.
plain boiled water in machine water pond 2 is through polydisc thickener and air-flotation process, plain boiled water fine impurities point, sicker and anionic trash obviously reduce, plain boiled water cleannes improve, wet-end chemicals consumption reduces, wet end is shaping to have some improvement with press section dehydration, becomes the quality of paper and paper machine operation efficiency to improve.Become paper to reduce because of sicker paper defects relevant with impure point, reduce by the clear water displacement machine water frequency, having saved clear water, having avoided white-water system to cause temperature fluctuation because adding clear water, cause wet end dehydration fluctuation and waste paper pulp-making slurry quality, become the quality of paper more stable.
above to invention has been detailed description; the explanation of embodiment just understands method of the present invention and core concept thereof for helping; its object is to allow the personage being familiar with this art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (9)
1. the processing method of a paper machine white water: it is characterized in that comprising the following steps:
(1) plain boiled water that the papermaking wire-cloth of paper machine room produces is delivered to machine water pond;
(2) plain boiled water in machine water pond produces underflow, turbid plain boiled water, pure water after being delivered to polydisc thickener, and described underflow, turbid plain boiled water, pure water enter paper machine pond with slurry, turbid white water chest, pure pond respectively;
(3) pure water is delivered to air floatation machine with being delivered to paper machine room recycling after air-flotation process, and underflow is delivered to pond with slurry and reclaims as pulping; The input that turbid plain boiled water is delivered to machine water pond or polydisc thickener carries out reprocessing through polydisc thickener.
2. the processing method of a kind of paper machine white water according to claim 1, is characterized in that: in step (2), adds bed course slurry, to increase fiber content in polydisc thickener in polydisc thickener.
3. the processing method of a kind of paper machine white water according to claim 2, is characterized in that: in step (2), and the plain boiled water in machine water pond is delivered to polydisc thickener by one first white water pump, and controls the water yield by a control valve and flowmeter.
4. the processing method of a kind of paper machine white water according to claim 3, it is characterized in that: in step (3), in pure water, first add aluminium polychloride, be delivered to air floatation machine by one second white water pump, and increase cationic flocculant in air floatation machine porch.
5. the processing method of a kind of paper machine white water according to claim 4, is characterized in that: the plain boiled water through air-flotation process is transported to back flow water pump, is delivered to waste paper pulp-making line and paper machine white water groove respectively, to recycle pure water by one the 3rd white water pump.
6., according to the paper machine white water treating apparatus that the processing method of the arbitrary described paper machine white water of claim 1 ~ 5 uses, it is characterized in that: described paper machine white water treating apparatus comprises:
Machine water pond, it is for collecting papermaking wire-cloth plain boiled water;
Polydisc thickener, it is for the treatment of the plain boiled water in described machine water pond, and described machine water pond plain boiled water produces underflow, turbid plain boiled water, pure water after the process of polydisc thickener;
Air floatation machine, it is for carrying out air-flotation process by pure water, and the plain boiled water through air-flotation process is delivered to paper machine room recycling,
Be provided with one second white water pump between described polydisc thickener and air floatation machine, be transported in air floatation machine with the pure water that polydisc thickener is produced; An aluminium polychloride adding set is provided with between described polydisc thickener and the second white water pump; Described air floatation machine porch is provided with a cationic flocculant adding set.
7. a kind of paper machine white water treating apparatus according to claim 6, is characterized in that: described paper machine white water treating apparatus also comprises: for collecting the paper machine pond with slurry of the underflow exported by polydisc thickener; For collecting the turbid white water chest of the turbid plain boiled water exported by polydisc thickener; For collecting the pure pond of the pure water exported by polydisc thickener.
8. a kind of paper machine white water treating apparatus according to claim 7, it is characterized in that: described paper machine white water treating apparatus also comprises: be arranged on the first white water pump, control valve, the flowmeter between described machine water pond and polydisc thickener, the first described white water pump is used for the plain boiled water in described machine water pond to be delivered in polydisc thickener, and described control valve and flowmeter are for controlling the plain boiled water flow entering polydisc thickener.
9. a kind of paper machine white water treating apparatus according to claim 7, is characterized in that: described paper machine white water treating apparatus also comprises: for collecting the back flow water pump of the plain boiled water through air-flotation process after being arranged on described air floatation machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410603650.5A CN104328707A (en) | 2014-10-31 | 2014-10-31 | White water treatment method and device for paper-making machine |
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| CN201410603650.5A CN104328707A (en) | 2014-10-31 | 2014-10-31 | White water treatment method and device for paper-making machine |
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| CN104328707A true CN104328707A (en) | 2015-02-04 |
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| CN201410603650.5A Pending CN104328707A (en) | 2014-10-31 | 2014-10-31 | White water treatment method and device for paper-making machine |
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Cited By (8)
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| CN106638099A (en) * | 2016-12-30 | 2017-05-10 | 东莞玖龙纸业有限公司 | Pulp deinking line tailing and white water recycling system |
| CN108316044A (en) * | 2018-04-04 | 2018-07-24 | 江苏富淼科技股份有限公司 | A kind of copy paper system and copy paper method |
| CN108457119A (en) * | 2018-02-12 | 2018-08-28 | 浙江和泓环保纸业有限公司 | A kind of catalyst utilization method for environmental protection of paper mill sludge |
| CN108486937A (en) * | 2018-04-19 | 2018-09-04 | 玖龙纸业（太仓）有限公司 | A kind of boxboard pulping system |
| CN109574117A (en) * | 2018-12-29 | 2019-04-05 | 玖龙纸业（东莞）有限公司 | Regenerate the transformation on economy of water cousumption system and method for Cultural Paper production technology |
| CN112390432A (en) * | 2020-11-12 | 2021-02-23 | 玖龙纸业（太仓）有限公司 | Waste paper pulping and disintegrating white water circulating treatment device and method |
| CN113860459A (en) * | 2021-11-09 | 2021-12-31 | 浙江景兴纸业股份有限公司 | Water-saving method for producing bleached pulp fine dried noodle cardboard paper |
| CN114230051A (en) * | 2022-01-11 | 2022-03-25 | 东莞建晖纸业有限公司 | Three-stage treatment system for papermaking white water |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638099A (en) * | 2016-12-30 | 2017-05-10 | 东莞玖龙纸业有限公司 | Pulp deinking line tailing and white water recycling system |
| CN108457119A (en) * | 2018-02-12 | 2018-08-28 | 浙江和泓环保纸业有限公司 | A kind of catalyst utilization method for environmental protection of paper mill sludge |
| CN108316044A (en) * | 2018-04-04 | 2018-07-24 | 江苏富淼科技股份有限公司 | A kind of copy paper system and copy paper method |
| CN108486937A (en) * | 2018-04-19 | 2018-09-04 | 玖龙纸业（太仓）有限公司 | A kind of boxboard pulping system |
| CN109574117A (en) * | 2018-12-29 | 2019-04-05 | 玖龙纸业（东莞）有限公司 | Regenerate the transformation on economy of water cousumption system and method for Cultural Paper production technology |
| CN109574117B (en) * | 2018-12-29 | 2021-08-06 | 玖龙纸业（东莞）有限公司 | Water-saving reconstruction system and method for production process of recycled cultural paper |
| CN112390432A (en) * | 2020-11-12 | 2021-02-23 | 玖龙纸业（太仓）有限公司 | Waste paper pulping and disintegrating white water circulating treatment device and method |
| CN113860459A (en) * | 2021-11-09 | 2021-12-31 | 浙江景兴纸业股份有限公司 | Water-saving method for producing bleached pulp fine dried noodle cardboard paper |
| CN114230051A (en) * | 2022-01-11 | 2022-03-25 | 东莞建晖纸业有限公司 | Three-stage treatment system for papermaking white water |
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