CN104594093A - Water circulation system for papermaking pulping process - Google Patents
Water circulation system for papermaking pulping process Download PDFInfo
- Publication number
- CN104594093A CN104594093A CN201410800335.1A CN201410800335A CN104594093A CN 104594093 A CN104594093 A CN 104594093A CN 201410800335 A CN201410800335 A CN 201410800335A CN 104594093 A CN104594093 A CN 104594093A
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- CN
- China
- Prior art keywords
- system equipment
- filtrate
- water circulation
- equipment
- washing system
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004537 pulping Methods 0.000 title claims abstract description 19
- 238000005406 washing Methods 0.000 claims abstract description 71
- 239000000706 filtrate Substances 0.000 claims abstract description 66
- 239000000835 fiber Substances 0.000 claims abstract description 57
- 238000011084 recovery Methods 0.000 claims abstract description 37
- 239000002562 thickening agent Substances 0.000 claims abstract description 23
- 239000002023 wood Substances 0.000 claims abstract description 23
- 238000004064 recycling Methods 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims description 30
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 7
- 238000004061 bleaching Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 abstract description 17
- 238000004065 wastewater treatment Methods 0.000 abstract description 8
- 229920001131 Pulp (paper) Polymers 0.000 abstract 2
- 238000007670 refining Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 102100027674 CTD small phosphatase-like protein Human genes 0.000 description 1
- 101710156847 CTD small phosphatase-like protein Proteins 0.000 description 1
- 102100027668 Carboxy-terminal domain RNA polymerase II polypeptide A small phosphatase 1 Human genes 0.000 description 1
- 101710134395 Carboxy-terminal domain RNA polymerase II polypeptide A small phosphatase 1 Proteins 0.000 description 1
- 102100027667 Carboxy-terminal domain RNA polymerase II polypeptide A small phosphatase 2 Human genes 0.000 description 1
- 101710134389 Carboxy-terminal domain RNA polymerase II polypeptide A small phosphatase 2 Proteins 0.000 description 1
- 101150085946 MSD2 gene Proteins 0.000 description 1
- 101100112811 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CDC5 gene Proteins 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 101150018041 msd1 gene Proteins 0.000 description 1
- PUPNJSIFIXXJCH-UHFFFAOYSA-N n-(4-hydroxyphenyl)-2-(1,1,3-trioxo-1,2-benzothiazol-2-yl)acetamide Chemical compound C1=CC(O)=CC=C1NC(=O)CN1S(=O)(=O)C2=CC=CC=C2C1=O PUPNJSIFIXXJCH-UHFFFAOYSA-N 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0014—Combination of various pulping processes with one or several recovery systems (cross-recovery)
Landscapes
- Paper (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention provides a water circulation system for a papermaking pulping process. A filtrate from a multi-disc thickener and a filtrate from a chemi-mechanical pulp line fiber recycling machine are used as rinse water for wood chip washing system equipment, pre-impregnating system equipment, pulp washing system equipment, fiber recovery system equipment, and high-concentration pulping system equipment. According to the water circulation system for the papermaking pulping process provided by the invention, the filtrate from the multi-disc thickener (large multi-disc) and the filtrate from the chemi-mechanical pulp line fiber recycling machine (small multi-disc) are used as the rinse water for the wood chip washing system equipment, the pre-impregnating system equipment, the pulp washing system equipment, the fiber recovery system equipment and the high-concentration pulping system equipment, accordingly, on the one hand, the amount of produced waste water is reduced, and the working pressure of a waste water treatment section is reduced; on the other hand, the usage amount of clear water used as the rinse water for the wood chip washing system equipment, the pre-impregnating system equipment, the pulp washing system equipment, the fiber recovery system equipment and the high-concentration pulping system equipment is reduced, so that the water resources are reduced.
Description
Technical field
The present invention relates to the technical field of paper-making pulping, specifically relate to a kind of water circulation system of paper-making pulping process.
Background technology
Reducing rules line fiber recycling machine (i.e. little polydisc) filtrate, polydisc thickener (i.e. large polydisc) filtrate are two kinds of process waters that in pulping water system, generation is larger.At present, this two kinds of process waters major part is admitted to waste water collection tank, delivers to back segment (evaporator section) go to process as waste water, and needs a large amount of water as flushing water in the follow-up equipment of paper technology, for example, wood chip washing system, pre-preg system, high consistency refining system etc.
Description described above, in prior art, reducing rules line fiber recycling machine (i.e. little polydisc) filtrate and polydisc thickener (i.e. large polydisc) filtrate are entered wastewater trough as waste water to process, on the one hand because wastewater flow rate is large, very large pressure is brought to wastewater treatment working section, on the other hand, when wood chip washing system, pre-preg system, high consistency refining system etc. are rinsed, need to consume a large amount of clear water, waste water resource.
Summary of the invention
The embodiment of the present invention provides a kind of water circulation system of paper-making pulping process, needs a large amount of clear water to cause the technical problem of wasting water as flushing water to solve the excessive and follow-up equipment (wood chip washing system equipment, pre-preg system equipment, high consistency refining system equipment etc.) of wastewater treatment working section pressure that reducing rules line fiber recycling machine (i.e. little polydisc) filtrate in prior art and polydisc thickener (i.e. large polydisc) filtrate brings as wastewater treatment.
For solving the problem, embodiments provide a kind of water circulation system of paper-making pulping process, polydisc thickener filtrate is used for the flushing water of wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment by described water circulation system.
According to one preferred embodiment of the present invention, reducing rules line fiber recycling machine filtrate is also used for the flushing water of described washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and the dense grinding system equipment of described height by described water circulation system.
According to one preferred embodiment of the present invention, described polydisc thickener filtrate adds place by the liquid of pressing clear filtrate pump to be transported to described washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and the dense grinding system equipment of described height in first.
According to one preferred embodiment of the present invention, described reducing rules line fiber recycling machine filtrate adds place by the liquid of pressing clear filtrate pump to be transported to described washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and the dense grinding system equipment of described height in second.
According to one preferred embodiment of the present invention, described polydisc thickener filtrate is also transported to sewage collecting tank, pressurized screen, scummer, mud settling tank by low pressure clear filtrate pump.
According to one preferred embodiment of the present invention, the described reducing rules line fiber recycling machine filtrate liquid place of adding that is transported to described washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and described height dense grinding system equipment separately through pipeline or the liquid that is transported to described washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and the dense grinding system equipment of described height after importing same pipeline with described polydisc thickener filtrate again add place.
According to one preferred embodiment of the present invention, described wood chip washing system equipment comprises two dewatering spiral machine, BW3000 sieve bend and fine extruder; Described pre-preg system equipment comprises BW1500 sieve bend, feeding serew machine and master screw extruder.
According to one preferred embodiment of the present invention, described slurry washing system equipment comprises master screw press master, bleaching tower to press master pipeline; Described fiber recovery system equipment comprises fibre recovery machine; Described height dense grinding system equipment comprises plug screw discharging machine, neat and well spaced screw machine, high dense mill blow-off pipe and plug screw feeder.
According to one preferred embodiment of the present invention, described wood chip washing system, described pre-preg system, described slurry washing system, described fiber recovery system and each equipment pipeline of the dense grinding system of described height are respectively equipped with by-pass valve control, for controlling the flow of filtrate.
According to one preferred embodiment of the present invention, the main line of described water circulation system is provided with master control valve, for controlling the opening and closing of described water circulation system.
Relative to prior art, the water circulation system of paper-making pulping process provided by the invention, by reducing rules line fiber recycling machine (i.e. little polydisc) filtrate and polydisc thickener (i.e. large polydisc) filtrate being used for the flushing water of wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment, on the one hand, decrease the generation of waste water, reduce the operating pressure of wastewater treatment working section; On the other hand, decrease the clear water use amount of wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment flushing water, saved water resource.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of water circulation system one preferred embodiment of paper-making pulping process of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.It is emphasized that following examples are only for illustration of the present invention, but scope of the present invention is not limited.Same, following examples are only section Example of the present invention and not all embodiments, and those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 is the structural representation of water circulation system one preferred embodiment of paper-making pulping process of the present invention.Polydisc thickener (large polydisc) 100 filtrates and reducing rules line fiber recycling machine (little polydisc) 200 filtrates are used for the flushing water of wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment by the water circulation system of this paper-making pulping process.
Specifically, the water circulation system of this paper-making pulping process comprises in polydisc thickener 100, reducing rules line fiber recycling machine 200, first pressing in clear filtrate pump 110, second and presses clear filtrate pump 210, each subsystem equipment and control valve etc.
Polydisc thickener 100 filtrate adds place by the liquid of pressing clear filtrate pump 110 to be transported to washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment in first.
Wherein, wood chip washing system equipment comprises two dewatering spiral machine 300, BW3000 sieve bend 301 and fine extruders 303 etc.; Pre-preg system equipment comprises BW1500 sieve bend 302, feeding serew machine (comprising MSD1 (305), MSD2 (306)) and master screw extruder 307 etc.; Slurry washing system equipment comprises master screw press master 308 and bleaching tower to press master pipeline etc.; Fiber recovery system equipment comprises fibre recovery machine 309 etc.; High dense grinding system equipment comprises neat and well spaced screw machine 304, plug screw discharging machine (PSD) 310, high dense mill blow-off pipe 311 and plug screw feeder (PSF) 312 etc.; certainly; the water equipment of each system is not limited to above-mentioned citing, and polydisc thickener 100 filtrate and reducing rules line fiber recycling machine 200 filtrate are used for other needs wetting system all within protection scope of the present invention.
Reducing rules line fiber recycling machine 200 filtrate adds place by the liquid of pressing clear filtrate pump 210 to be transported to washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment in second.
To starch the AOF calculation of line 600adt/D, fibre recovery machine clear filtrate enters waste water collection tank flow and is about 2800-3500L/Min, and the wastewater flow rate that waste water collection tank delivers to evaporator section is about 4200-4500L/Min.The proportion that polydisc clear filtrate accounts for wastewater flow rate is larger.And wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment also need to use clear water.Therefore wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment need to rinse by clear water on the one hand, on the other hand a large amount of polydisc (comprising large polydisc-polydisc thickener and little polydisc-reducing rules line fiber recycling machine) clear filtrates is squeezed into waste water collection tank and is finally sent to evaporation and carries out wastewater treatment, and wastewater flow rate brings larger pressure to wastewater treatment working section greatly.Therefore, the technical scheme of the application solves above-mentioned technical problem well.
Polydisc thickener 100 filtrate is also transported to other water equipments 130 by low pressure clear filtrate pump 120, and these other water equipments 130 comprise sewage collecting tank, SCP1 filtrate receiver, SCP2 filtrate receiver, SCP3 filtrate receiver, pressurized screen, 5 sections of scummers, chip washing grit removal tanks etc.
Preferably, the liquid that reducing rules line fiber recycling machine (little polydisc) 200 filtrates can be transported to washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment separately through pipeline adds place, and the liquid that also can be transported to washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment after importing same pipeline again with polydisc thickener (large polydisc) 100 filtrates adds place.In the diagram of the present embodiment, give the structural representation that reducing rules line fiber recycling machine (little polydisc) 100 filtrates and polydisc thickener (large polydisc) 200 filtrates are transported to washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment again liquid after importing same pipeline adds place, but not as to the present invention other may the restriction of embodiments.
In the embodiment of the present application wood chip washing system, pre-preg system, slurry washing system, fiber recovery system and each equipment pipeline of high dense grinding system are respectively equipped with by-pass valve control 150, for control filtrate flow and as independent switch valve.The main line of water circulation system is provided with master control valve 140, for controlling the opening and closing of water circulation system.Certainly, can also press in clear filtrate pump 110, second to press on the pipeline of clear filtrate pump 210 and low pressure clear filtrate pump 120 in first by-pass valve control (not marking in figure) is set separately, in order to control separately the working condition of each pipeline.Within the scope that those skilled in the art can understand, repeat no more herein.
With the water yield cheek under 600adt/D production capacity, large polydisc clear filtrate is used in amount about about the 1500L/Min of above-mentioned each pipeline or screen frame flushing water.In production, clear water consumption is about 950 tons/class (within 8 hours, being 1 class).With little polydisc clear filtrate together with large polydisc clear filtrate as the pipeline of wood chip washing system, pre-preg system, high consistency refining system etc. or screen frame flushing water, can reduce and send the wastewater flow of evaporation to be about 1500L/Min, ton pulp waste water amount is down to 7T/ADT from 10T/ADT, clearly, consume clear water amount greatly to reduce.
The water circulation system of the paper-making pulping process of the embodiment of the present invention, by reducing rules line fiber recycling machine (i.e. little polydisc) filtrate and polydisc thickener (i.e. large polydisc) filtrate being used for the flushing water of wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment, on the one hand, decrease the generation of waste water, reduce the operating pressure of wastewater treatment working section; On the other hand, decrease the clear water use amount of wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment flushing water, saved water resource.
The foregoing is only a kind of embodiment of the present invention; not thereby limit the scope of the invention; every utilize description of the present invention and accompanying drawing content to do equivalent device or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the water circulation system of a paper-making pulping process, it is characterized in that, polydisc thickener filtrate is used for the flushing water of wood chip washing system equipment, pre-preg system equipment, slurry washing system equipment, fiber recovery system equipment and high dense grinding system equipment by described water circulation system.
2. water circulation system according to claim 1, it is characterized in that, reducing rules line fiber recycling machine filtrate is also used for the flushing water of described wood chip washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and the dense grinding system equipment of described height by described water circulation system.
3. water circulation system according to claim 1, it is characterized in that, described polydisc thickener filtrate adds place by the liquid of pressing clear filtrate pump to be transported to described washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and the dense grinding system equipment of described height in first.
4. water circulation system according to claim 2, it is characterized in that, described reducing rules line fiber recycling machine filtrate adds place by the liquid of pressing clear filtrate pump to be transported to described washing system equipment, described pre-preg system equipment, described slurry washing system equipment, described fiber recovery system equipment and the dense grinding system equipment of described height in second.
5. water circulation system according to claim 1, is characterized in that, described polydisc thickener filtrate is also transported to sewage collecting tank, filtrate receiver, pressurized screen, scummer, mud settling tank by low pressure clear filtrate pump.
6. the water circulation system according to claim 3 or 4, it is characterized in that, described reducing rules line fiber recycling machine filtrate is transported to described washing system equipment separately through pipeline, described pre-preg system equipment, described slurry washing system equipment, the liquid place of adding of described fiber recovery system equipment and described height dense grinding system equipment or be transported to described washing system equipment again after importing same pipeline with described polydisc thickener filtrate, described pre-preg system equipment, described slurry washing system equipment, the liquid of described fiber recovery system equipment and the dense grinding system equipment of described height adds place.
7. water circulation system according to claim 1, is characterized in that, described wood chip washing system equipment comprises two dewatering spiral machine, BW3000 sieve bend and fine extruder; Described pre-preg system equipment comprises BW1500 sieve bend, feeding serew machine and master screw extruder.
8. water circulation system according to claim 7, is characterized in that, described slurry washing system equipment comprises master screw press master and bleaching tower to press master pipeline; Described fiber recovery system equipment comprises fibre recovery machine; Described height dense grinding system equipment comprises plug screw discharging machine, neat and well spaced screw machine, high dense mill blow-off pipe and plug screw feeder.
9. water circulation system according to claim 8, it is characterized in that, described wood chip washing system, described pre-preg system, described slurry washing system, described fiber recovery system and each equipment pipeline of the dense grinding system of described height are respectively equipped with by-pass valve control, for controlling the flow of filtrate.
10. water circulation system according to claim 9, is characterized in that, the main line of described water circulation system is provided with master control valve, for controlling the opening and closing of described water circulation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800335.1A CN104594093B (en) | 2014-12-19 | 2014-12-19 | A kind of water circulation system of paper-making pulping process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800335.1A CN104594093B (en) | 2014-12-19 | 2014-12-19 | A kind of water circulation system of paper-making pulping process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104594093A true CN104594093A (en) | 2015-05-06 |
| CN104594093B CN104594093B (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410800335.1A Expired - Fee Related CN104594093B (en) | 2014-12-19 | 2014-12-19 | A kind of water circulation system of paper-making pulping process |
Country Status (1)
| Country | Link |
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| CN (1) | CN104594093B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245398A (en) * | 2016-08-31 | 2016-12-21 | 玖龙纸业（太仓）有限公司 | The de-sludging device of a kind of deinking line polydisc and de-sludging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05247868A (en) * | 1992-02-28 | 1993-09-24 | Mitsubishi Paper Mills Ltd | Treatment of waste water in production of pulp |
| CN1919753A (en) * | 2006-09-08 | 2007-02-28 | 臧立新 | Treatment reuse technique for paper-making white-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 |
| CN202170447U (en) * | 2011-07-15 | 2012-03-21 | 山东太阳纸业股份有限公司 | Evaporation and pre-processing production line for chemico-mechanical pulp |
-
2014
- 2014-12-19 CN CN201410800335.1A patent/CN104594093B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05247868A (en) * | 1992-02-28 | 1993-09-24 | Mitsubishi Paper Mills Ltd | Treatment of waste water in production of pulp |
| CN1919753A (en) * | 2006-09-08 | 2007-02-28 | 臧立新 | Treatment reuse technique for paper-making white-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 |
| CN202170447U (en) * | 2011-07-15 | 2012-03-21 | 山东太阳纸业股份有限公司 | Evaporation and pre-processing production line for chemico-mechanical pulp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245398A (en) * | 2016-08-31 | 2016-12-21 | 玖龙纸业（太仓）有限公司 | The de-sludging device of a kind of deinking line polydisc and de-sludging method |
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| Publication number | Publication date |
|---|---|
| CN104594093B (en) | 2016-10-12 |
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Effective date of registration: 20201221 Address after: Area D12, Yangpu Economic Development Zone, Danzhou City, Hainan Province Patentee after: HAINAN JINHAI PULP & PAPER Co.,Ltd. Address before: 212132, No. 8 Tung Hing East Road, Dagang, Jiangsu, Zhenjiang Patentee before: Goldeast Paper (Jiangsu) Co.,Ltd. |
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Granted publication date: 20161012 |