CN103726387B - Paper machine water-saving system and method - Google Patents
Paper machine water-saving system and method Download PDFInfo
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- CN103726387B CN103726387B CN201410011870.9A CN201410011870A CN103726387B CN 103726387 B CN103726387 B CN 103726387B CN 201410011870 A CN201410011870 A CN 201410011870A CN 103726387 B CN103726387 B CN 103726387B
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Abstract
A kind of paper machine water-saving system, comprise clear water tower, watering equipment, many disk filters and filter plant, described clear water tower provides clear water for watering equipment, described many disk filters reclaim and filter the waste water of watering equipment generation and can filter to obtain super clear filtrate, the super clear filtrate that many disk filters are filtered gained by described filter plant filters again, and will again filter gained filtrate and directly offer watering equipment and use. The invention still further relates to the water-saving method of paper machine.
Description
Technical field
The present invention relates to pulp technology for making paper, relate in particular to a kind of paper machine water-saving system and method.
Background technology
In pulp and paper industry, the problem such as water consumption and wastewater discharge are large is more and more serious. How reasonably to utilize water resource, reduce wastewater discharge, become the heat subject of current research. Plain boiled water is the waste water in papermaking process, and industry is processed to recycle to plain boiled water conventionally. Conventional white water treating equipment has: DAF flotation unit, many disk filters, filter, sedimentation depositing reservoir, vacuum filter and sand filter etc. Wherein many disk filters, by pure physical filtering process, can well be back to use the not destruction system production to continue utilization of paper machine by the fiber fines in plain boiled water and filler. The plain boiled water filtering through many disk filters can obtain three kinds of filtrates: super clear filtrate, clear filtrate, turbid filtrate. Three kinds of filtrate differences are that in filtrate, fiber is different from other impurity content: in super clear filtrate, fiber and other impurity content are minimum, and in clear filtrate, fiber and other impurity content take second place, and in turbid filtrate, fiber and other impurity content are the highest.
Existing a kind of paper machine, it uses the plain boiled water in many disk filters recovery system, mainly also comprises clear water tower, purifies water tower, warm water tank, part watering equipment (as wet end, press section, suction flat box) in paper machine. Part in this paper machine is as follows with Water flow-path and device effect: external water source constantly injects clear water to clear water tower, and clear water tower is that whole paper machine water provides safeguard; Purify water tower and store the filtered water that paper machine reclaims, the water purifying in water tower is used for loose slurry, dilution and some sprays relatively low to water quality requirement, and in the time purifying water tower liquid level deficiency, clear water tower is supplied clear water to purifying in water tower; Clear water in clear water tower is also as multiple uses such as cooling, dilution, sprays, wherein a part of clear water in clear water tower is after warm water tank heating, as the Low-pressure spray of web part of paper machine, the Low-pressure spray of press section, the high-pressure spraying of wet end, high-pressure spraying and the lubricated spray of suction flat box of press section; Clear water is lubricating after spray use through the Low-pressure spray of wet end, the Low-pressure spray of press section, the high-pressure spraying of wet end, high-pressure spraying and the suction flat box of press section, becoming plain boiled water reclaims through many disk filters, the super clear filtrate that wherein filters gained is recycled to and purifies in water tower, then is applied to paper machine.
Practical application is found, constantly use and consume under the situation of clear water at paper machine, the super clear filtrate water yield obtaining through many disk filtration machine filter is larger, at paper machine normal operation period, super clear filtrate is after supplying purification water tower liquid level, super clear filtrate in super clear filtrate pond will overflow, causes the waste of water resource. Therefore, the super clear filtrate of necessary these overflows of recovery.
Summary of the invention
In view of this, be necessary to provide a kind of paper machine water-saving system and method, this water-saving system and method can solve paper machine water overflow problem, reduce paper machine ton paper water consumption.
A kind of paper machine water-saving system, comprise clear water tower, watering equipment, many disk filters and filter plant, described clear water tower provides clear water for watering equipment, described many disk filters reclaim and filter the waste water of watering equipment generation and can filter to obtain super clear filtrate, the super clear filtrate that many disk filters are filtered gained by described filter plant filters again, and will again filter gained filtrate and directly offer watering equipment and use.
A kind of method that adopts above-mentioned paper machine water-saving system, comprise step: adopt clear water tower to provide watering equipment required clear water, using many disk filters to reclaim filters the waste water producing after watering equipment water and obtains super clear filtrate, adopt filter plant, further process many disk filters and filter the super clear filtrate of gained, and filtrate after treatment is directly offered to watering equipment use.
Paper machine water-saving system of the present invention by increasing a set of filter plant after many disk filters, the super clear filtrate that many disk filters are reclaimed directly uses on paper machine after further processing, to solve the overflow problem in super clear filtrate pond, and reduce ton paper rinse dosage.
Compared with prior art, paper machine water-saving system provided by the invention and method, can stop system water overflow phenomena, using water wisely. Practical application discovery, originally ton paper water is the paper machine system of 7 tons, after adopting paper machine water-saving system provided by the invention and method, its ton of paper water is down to 4.5 tons.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Brief description of the drawings
Fig. 1 is the water saving Optimizing Flow schematic diagram of one embodiment of the invention.
Main element symbol description
| Clear water tower | 1 |
| Warm water tank | 2 |
| Valve | 3 |
| Watering equipment | 4 |
| Many disk filters | 11 |
| Turbid reservoir | 111 |
| Clear filtrate pond | 112 |
| Super clear filtrate pond | 113 |
| Filter | 121 |
| Sand filter | 131 |
| Fine filtering apparatus | 141 |
| Backwash pump | 142 |
| Pipeline | 21，22，23，24，25，26，27，28，29，210，211，212，213，214，215，216，217，218，219，220，221 |
Following detailed description of the invention further illustrates the present invention in connection with above-mentioned accompanying drawing.
Detailed description of the invention
As shown in Figure 1, paper machine water-saving system of the present invention, comprise clear water tower 1, watering equipment 4, many disk filters 11 and filter plant (not mark), described clear water tower 1 provides clear water for watering equipment 4, the waste water that described many disk filters 11 recovery filtration watering equipments 4 produce also can be filtered to obtain super clear filtrate, the super clear filtrate that many disk filters 11 are filtered gained by described filter plant filters again, and will again filter gained filtrate and directly offer watering equipment 4 and use.
Concrete, in this paper machine water-saving system, external water source constantly injects clear water to clear water tower 1, and clear water tower 1 provides safeguard for paper machine water. Preferably, in order to make better de-watering of slurries, also at clear water tower 1, warm water tank 2 is set below, in clear water tower 1, provide a large amount of clear water to enter warm water tank 2 by pipeline 21, warm water tank 2 is for heating to clear water, and the clear water wherein heating through warm water tank 2 is used to watering equipment 4 that the warm water after heating is provided through pipeline 23,24,25,26,27 respectively. For the described warm water tank 2 of better control, a valve 3 also can be set after warm water tank 2, the clear water amount of heating is provided according to the amount control warm water tank 2 of the super clear filtrate of further processing. In the present embodiment, watering equipment 4 comprises suction flat box, wet end, press section, and the warm water being provided by warm water tank 2 is for the lubricated spray of suction flat box, the high-pressure spraying of wet end, the high-pressure spraying of press section, the Low-pressure spray of wet end, the Low-pressure spray of press section. Understandably, the watering equipment in paper machine system is not limited to the above-mentioned equipment of mentioning.
The plain boiled water producing after these watering equipment 4 waters, as become after plain boiled water through the high-pressure spraying of the lubricated spray of suction flat box, wet end, the high-pressure spraying of press section, the Low-pressure spray of wet end, the clear water that the Low-pressure spray of press section uses, be recovered to many disk filters 11 through pipeline 28,29,210,220,221, after many disk filters 11 filter this plain boiled water, leach turbid filtrate, clear filtrate, three kinds of filtrates of super clear filtrate, these three kinds of filtrates flow to respectively with supporting turbid reservoir 111, clear filtrate pond 112, the super clear filtrate pond 113 of many disk filters 11.
Wherein, super clear filtrate in super clear filtrate pond 113 is can directly use in watering equipment 4 after device processes after filtration, on watering equipment such as the paper machine such as Low-pressure spray, the Low-pressure spray of press section of the Low-pressure spray of the high-pressure spraying of the lubricated spray of the suction flat box of the present embodiment, net splenium, press section, wet end, in order to solve super clear filtrate overflow phenomena in super clear filtrate pond 113.
In the present embodiment, above-mentioned filter plant comprises three filters, respectively: filter 121, sand filter 131, fine filtering apparatus 141. Three filter filtrate purposes after treatment and function situation are as follows.
Wherein, the super clear filtrate flow ipe 211 in super clear filtrate pond 113, after filter 121 is processed, filtrate is the Low-pressure spray for web part of paper machine through pipeline 219. Because of the Low-pressure spray of web part of paper machine relatively low to water quality requirement, so only need adopt filter 121(plain filter).
In addition, the super clear filtrate flow ipe 212 in super clear filtrate pond 113, after sand filter 131 is processed, filtrate is the Low-pressure spray for press section of a paper machine through pipeline 218. Relatively high because of the Low-pressure spray requirement of press section of a paper machine, the super clear filtrate after plain filter filters can not reach instructions for use, so need to adopt sand filter 131.
Have again, the super clear filtrate flow ipe 213 in super clear filtrate pond 113, after fine filtering apparatus 141 is processed, filtrate is respectively used to high-pressure spraying, the high-pressure spraying of wet end, the lubricated spray of suction flat box of press section of a paper machine through pipeline 215,216,217. Because of the water under high pressure aperture of the high-pressure spraying of the high-pressure spraying of press section of a paper machine, wet end, the lubricated spray of suction flat box little, very high to water quality requirement, so can not circulating, this part super clear filtrate using uses continuously, otherwise water turbidity can uprise, easily cause poor dewatering, dosing is processed and also can not be solved the negative effect that it brings, in addition, even if the filtrate that this part is used is after sand filter, entirety solid content reaches 15-20PPM, still can not effectively control impurity particle diameter, not meet the water requirement of this part, therefore need to adopt fine filtering apparatus 141. In the present embodiment, the petax filter (filter that U.S. Kadant Inc. invention manufacture) of fine filtering apparatus 141 for containing 20 disks.
In certain embodiments, fine filtering apparatus 141 is also connected by pipeline 214 with turbid reservoir 111, on pipeline 214, backwash pump 142 can be set, and backwash pump 142 is for being directed at turbid reservoir 111 by the impurity filtrate of fine filtering apparatus 141.
Be understandable that, this filter plant can only have filter 121, and not only limit the use of the Low-pressure spray in wet end through filter 121 filtrate after treatment, in paper machine system, require similar watering equipment all can use through filter 121 filtrate after treatment with wet end Low-pressure spray water. Also be appreciated that, this filter plant can only have sand filter 131, and not only limit the use of the Low-pressure spray in press section through sand filter 131 filtrate after treatment, in same paper machine system, require similar watering equipment all can use through sand filter 131 filtrate after treatment with press section Low-pressure spray water. Also be appreciated that, this filter plant can only have fine filtering apparatus 141, and be not limited only to high-pressure spraying, the high-pressure spraying of wet end, the lubricated spray of suction flat box of press section of a paper machine through fine filtering apparatus 141 super clear filtrate after treatment, because of good through fine filtering apparatus 141 treated water matter, alternative clear water uses, so nearly all water device can use in paper machine.
Equally understandably, can also usage quantity and all different filter plants of type, in every case filter plant quantity, filter plant type and after filtration after device processes the variation of the purposes of filtrate etc. be all attributed in connotation of the present invention.
In addition, after the warm water tank 2 of paper machine, be provided with valve 3, warm water tank 2 is connected by pipeline 22 with valve 3, and valve 3 is for controlling the clear water use amount of warm water tank 2. The super clear filtrate reclaiming at many disk filters 11 enough uses, valve 3 is closed; The super clear filtrate reclaiming at many disk filters 11 uses not, valve 3 is opened, and controls the flow velocity of clear water, and clear water is provided, and guarantees that paper machine normally moves.
Adopt the water-saving method of above-mentioned paper machine water-saving system, comprise step: adopt clear water tower 1 to provide watering equipment 4 required clear water, using many disk filters 11 to reclaim filters the waste water producing after watering equipment 4 waters and obtains super clear filtrate, adopt filter plant further to process many disk filters 11 and filter the super clear filtrate of gained, and filtrate after treatment is directly offered to watering equipment 4 use.
In order better to make de-watering of slurries, in above-mentioned paper machine water-saving system, between clear water tower 1 and watering equipment 4, warm water tank 2 is also set, described warm water tank 2 is for providing clear water after heating to watering equipment 4, and be provided for controlling the valve 3 of described warm water tank 2, the clear water use amount of the heating providing according to the amount control warm water tank 2 of the super clear filtrate of further processing.
Concrete, first the water-saving method of the present embodiment, adopts clear water tower 1 to provide watering equipment 4 required clear water, uses warm water tank 2 to heat providing to the clear water of watering equipment 4, and controls the clear water use amount of the heating that warm water tank 2 provides by valve 3. In the present embodiment, watering equipment 4 comprises suction flat box, wet end, press section.
Secondly, using many disk filters 11 to reclaim filters the waste water producing after watering equipment 4 waters and obtains super clear filtrate.
Finally, adopt filter plant further to process many disk filters 11 and filter the super clear filtrate of gained, and filtrate after treatment is directly offered to watering equipment 4 use. According to concrete use needs, this filter plant can comprise the filter that one or more are different. In the present embodiment, this filter plant comprises filter 121, sand filter 131 and fine filtering apparatus 141. Filtrate after filter 121 filters is for the Low-pressure spray of wet end, filtrate after sand filter 131 filters is for the Low-pressure spray of press section, and the filtrate after fine filtering apparatus 141 filters is for the lubricated spray of suction flat box, the high-pressure spraying of wet end, the high-pressure spraying of press section.
The present invention filters to be directly used in the lubricated spray of suction flat box, the high-pressure spraying of wet end, the high-pressure spraying of press section, the purposes such as Low-pressure spray, the Low-pressure spray of press section of wet end by increase a set of filter plant behind super clear filtrate pond again by super clear filtrate, solve the overflow problem of super clear filtrate in super clear filtrate pond, reduced ton paper rinse dosage. In addition, because some waters of paper machine need be heated into warm water through warm water tank, and the super clear filtrate reclaiming is because itself being the warm water through heating, and need not heat and can directly use, therefore the present invention has also reduced the steam consumption that clear water uses through warm water tank, and alleviates wastewater treatment pressure and cost.
Claims (5)
1. a paper machine water-saving system, comprises clear water tower, watering equipment and many disk filters, clear water towerFor watering equipment provides clear water, many disk filters reclaim and filter the waste water that watering equipments produce and can filterSuper clear filtrate, is characterized in that: also comprise filter plant, described filter plant is by many disk filters mistakeThe super clear filtrate of filter gained filters again, and will again filter gained filtrate and directly offer watering equipment and makeWith, described watering equipment comprises suction flat box, wet end, the press section of paper machine, described filter plant bagDraw together one or more plain filter, sand filter and fine filtering apparatus, described super clear filtrate is through instituteState filtrate after the plain filter Low-pressure spray for web part of paper machine, described super clear filtrate is through described sand filtrationFiltrate after device filters is for the Low-pressure spray of press section of a paper machine, and described super clear filtrate is through described fine filteringFiltrate after equipment filters is for the lubricated spray of suction flat box, the high-pressure spraying of wet end, the height of press sectionPress spray.
2. paper machine water-saving system as claimed in claim 1, is characterized in that: described many disk filtrationMachine is provided with the turbid reservoir for storing turbid filtrate, and described filter plant is also provided with backwash pump, instituteState backwash pump for the impurity filtrate of filter plant is directed to turbid reservoir.
3. the paper machine water-saving system as described in any one in claim 1 to 2, is characterized in that:Between clear water tower and water device, warm water tank is also set, described warm water tank is for providing clear water after heating extremelyWatering equipment.
4. adopt a water-saving method for paper machine water-saving system as claimed in claim 1, comprise step:
Adopt clear water tower to provide watering equipment required clear water;
Using many disk filters to reclaim filters the waste water producing after watering equipment water and obtains super clear filterLiquid;
Adopt filter plant further to process many disk filters and filter the super clear filtrate of gained, and will processAfter filtrate directly offer watering equipment use, described watering equipment comprise paper machine suction flat box,Wet end, press section, described filter plant comprises one or more plain filter, sand filter and essenceThin filter plant, the filtrate of described super clear filtrate after described plain filter is for the low pressure of web part of paper machineSpray, the filtrate of described super clear filtrate after described sand filter filters is used for the Low-pressure spray of press section of a paper machine,The filtrate of described super clear filtrate after described fine filtering apparatus filters for the lubricated spray of suction flat box,The high-pressure spraying of wet end, the high-pressure spraying of press section.
5. water-saving method as claimed in claim 4, is characterized in that: also comprise and adopt warm water tank to clearlyAfter heating, the clear water that water tower provides offers again watering equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410011870.9A CN103726387B (en) | 2014-01-11 | 2014-01-11 | Paper machine water-saving system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410011870.9A CN103726387B (en) | 2014-01-11 | 2014-01-11 | Paper machine water-saving system and method |
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| CN103726387A CN103726387A (en) | 2014-04-16 |
| CN103726387B true CN103726387B (en) | 2016-05-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106400570B (en) * | 2016-11-02 | 2018-03-23 | 芬欧汇川(中国)有限公司 | Paper machine system |
| DE102016125303B4 (en) * | 2016-12-22 | 2018-12-27 | Voith Patent Gmbh | Plant for process water treatment |
| CN110424175B (en) * | 2019-09-04 | 2024-04-30 | 牡丹江恒丰纸业股份有限公司 | System and method for treating white water and clean water of paper machine |
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| CN101838945A (en) * | 2010-06-23 | 2010-09-22 | 永州湘江纸业有限责任公司 | Papermaking wastewater recycling method |
| CN202705779U (en) * | 2012-05-29 | 2013-01-30 | 汕头市金平区飘合纸业有限公司 | White water recycling and separating device of paper machine |
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| JP2011038199A (en) * | 2009-08-07 | 2011-02-24 | Seed:Kk | Cleaning method of used paper recycling apparatus, cleaning system, and used paper recycling apparatus |
| JP2012082563A (en) * | 2010-10-13 | 2012-04-26 | Takayuki Sakata | Soft mesh sheet preventing sweat spot stain by using water absorbent sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101838945A (en) * | 2010-06-23 | 2010-09-22 | 永州湘江纸业有限责任公司 | Papermaking wastewater recycling method |
| CN202705779U (en) * | 2012-05-29 | 2013-01-30 | 汕头市金平区飘合纸业有限公司 | White water recycling and separating device of paper machine |
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