WO2006137183A1 - 製紙方法 - Google Patents
製紙方法 Download PDFInfo
- Publication number
- WO2006137183A1 WO2006137183A1 PCT/JP2005/022941 JP2005022941W WO2006137183A1 WO 2006137183 A1 WO2006137183 A1 WO 2006137183A1 JP 2005022941 W JP2005022941 W JP 2005022941W WO 2006137183 A1 WO2006137183 A1 WO 2006137183A1
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- WO
- WIPO (PCT)
- Prior art keywords
- papermaking
- aqueous solution
- ppm
- white water
- water
- Prior art date
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/11—Halides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
-
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Definitions
- the present invention relates to a management method capable of simplifying chemical treatment of a papermaking method and optimizing a wet end.
- Patent Document 1 Japanese Patent Laid-Open No. 7-258002
- the method of using a conventional organic antibacterial agent after fully oxidizing and decomposing the reducing substance with a chlorine-based inorganic antibacterial agent or the like sufficiently retains effective chlorine having strong oxidizing properties.
- the dye added inside the product is oxidized to affect the hue of the product paper, and the metal materials such as piping used in the white water circulation system of the papermaking process are corroded.
- new organic antibacterial agents that are not easily affected by reducing substances are effective in actual papermaking processes containing 5 to 20 mg / L of reducing substances, but contain higher concentrations of reducing substances. In some cases, it is necessary to add a high concentration due to the effect.
- a first object of the present invention is to provide a papermaking method capable of optimizing the papermaking environment using an acid chlorinating agent under acidic conditions.
- the second object of the present invention is to carry out the bleaching process, which is not only a papermaking process, with the same acid-chlorine oxidant.
- the possibility of recycling paper wastewater has increased. Accordingly, a third object of the present invention is to treat paper wastewater so that it can be reused as industrial water.
- the residual chlorine concentration at the time of charging into white water after papermaking was 0.5 ppm or more, preferably 1 ppm or more, and the pH was adjusted to be weakly acidic.
- a papermaking method is characterized in that hypochlorous acid or a dilute aqueous solution containing chlorous acid is continuously or intermittently added to treat the white water.
- Hypochlorous acid or an aqueous solution containing chlorous acid includes hypochlorous acid, a potassium salt that is rinsed only with chlorous acid, a potassium salt that is rinsed only with sodium bromite, and the like in the present invention.
- the residual chlorine concentration in white water is 20 ppm or less, preferably 10 ppm or less in the white water pit after paper making. It is preferable to add an aqueous solution containing hypochlorous acid or chlorous acid.
- the amount of the above-mentioned hypochlorous acid or aqueous solution containing chlorous acid is controlled so that the residual chlorine concentration in the circulated white water after treatment is 5 ppm or less, preferably 0.1 to 3 ppm. It is desirable to control to less than lppm outside the circulation system.
- an aqueous solution containing hypochlorous acid or chlorous acid adjusted to a weakly acidic pH of pH 4 or more and less than 7 based on a residual chlorine concentration of 500 ppm or more at the time of bleaching Is added continuously or intermittently and bleaching can simplify multi-stage bleaching and at the same time facilitate subsequent chemical management. Moreover, it is preferable because the treatment effect during the papermaking is improved.
- the purpose of the bleaching process is to simplify the multi-stage bleaching process after delignification.Since used paper is suitable for application to used paper pulp after deinking, it should be applied at the same time as deinking. You can also.
- the aqueous solution containing hypochlorous acid or chlorous acid contains 1000 to 20000 ppm, preferably 3 000 to 2,000 ppm, preferably a potassium salt containing only sodium hypobromite. It is preferable to use an aqueous solution containing sodium hypochlorite diluted to 10000 ppm and having a pH of 4 or more and less than 7, preferably pH 4.5 or more and 6.5 or less.
- bleaching is preferably performed in the range of 3 to 30% by weight of pulp in papermaking raw material.
- hypochlorite When the pulp has a high concentration, it is recommended that an aqueous solution containing hypochlorite is added in a large number of times, the initial stage should be 3000 ppm or more, and the aqueous solution with a low concentration is sequentially added.
- Hypochlorous acid can exert an effective microbial bactericidal effect at pH 4 or more and 6.5 or less, but it is surprising that a bleaching effect comparable to ozone or chlorine dioxide is exhibited.
- the papermaking method according to the present invention includes a bleaching step in which a chemical is added to bleached papermaking raw water after delignification or deinking, and a papermaking step in which the chemical is introduced into white water before and after papermaking and processed.
- the redox potential before and after continuously or intermittently adding hypochlorous acid or an aqueous solution containing chlorous acid adjusted to a weakly acidic pH is measured, and the change in redox potential is measured.
- the appropriate input amount of the aqueous solution can be automatically controlled by the comparison signal.
- the purpose of this is to continuously or intermittently add hypochlorous acid or an aqueous solution containing chlorous acid adjusted to a weakly acidic pH. It is preferable to perform the measurement since the accuracy of control can be improved.
- hypochlorous acid can exert an effective microbial disinfection effect at a pH of 4 or more and 6.5 or less and a residual chlorine concentration of 0.4 ppm or more.
- the slime control effect can be demonstrated by setting the number of bacteria to 10 4 or less.
- the objective is to simultaneously decompose organic substances, pitch, etc. and remove anion trash.
- the value is preferably 0.5 ppm or more and 1 ppm or more. However, if it is 10 ppm or more, it may not be consumed in the white water pit and may remain in the circulating white water. If a small amount of residue does not affect the subsequent papermaking environment, a target of 20 ppm or less may be set.
- an electrolytic aqueous solution containing hypochlorous acid or bromous acid can be used as an aqueous solution containing hypochlorous acid or chlorous acid used in the papermaking process.
- Region that does not generate chlorine gas pH4 More than 7, less than 6.5, 1000 to 20000 ppm, especially 300 to 10,000 ppm of sodium hypochlorite or sodium chlorite.
- the above aqueous solution containing hypochlorous acid can be produced in-situ using a sterimixer manufactured by HSP Co., Ltd.
- pH 4 to 6.5 concentration of 5000 to 20000 ppm, especially 500 to 1OOOOppm or less is preferred and transported by tank truck etc.
- a pH adjuster when preparing an aqueous sodium hypochlorite solution, it is preferable to use a pH adjuster so that the pH does not become too low.
- an inorganic system such as potassium hydrogen carbonate that does not affect effective chlorine.
- a sodium salt may be added. The invention's effect
- the aqueous solution containing hypochlorous acid or chlorous acid containing weakly acidic and effective chlorine concentration of lOOOOppm or more and 20000ppm or less, preferably 3000ppm or more and lOOOOppm or less is acidic, and the white water after wet end papermaking. As shown in Fig. 3, it can make efforts to improve the papermaking wet-end environment.
- Deodorizing effect is high because it completely decomposes organic odor such as hydrogen sulfide. Wastewater COD can be reduced by decomposition of organic matter.
- the wastewater can be reused as industrial water by further treating it by using an acid-chlorine oxidizer typified by sodium hypochlorite.
- the above-mentioned effects (1) to (6) can be obtained by bleaching the papermaking raw material water after delignification or deinking before paper making with an acid-chlorine oxidizing agent typified by sodium hypochlorite.
- an acid-chlorine oxidizing agent typified by sodium hypochlorite.
- the chemical treatment in the entire papermaking process can be greatly simplified.
- FIG. 1 is a schematic diagram of the wet-end environmental field control system in the white water circulation line of the paper making process using waste paper raw material.
- White water produced by the paper machine 100 is sent to the white water pit 110 where slime treatment is performed. Some are recycled to the stock inlet 150 and some are sent to the drain pit 120.
- the raw material pulper is sent from the deinking process tank 160 to the seed box 140, passed through the screen tank 130, sent to the stock inlet 150, and reaches the paper machine 100.
- one white water pit 110 is shown in one paper machine 100, but four normal paper machines 100 are connected in series, and each white water pit 110 is (a), (b), ( c) and (d) Tanks are provided.
- the white water pits (a), (b), (c), and (d) are continuously supplied in the direction of arrow 170 with predetermined hyponitrous acid from the hypochlorous acid supply system 200 to the tank.
- Each tank is equipped with measuring devices D1 to D4 that measure the residual chlorine concentration in the treated white water, and the measurement signal 180 is fed back to the hyponitrous water supply system.
- the supply amount is adjusted so that The measuring device is preferably used in combination with a force pH meter constituted by an oxidation-reduction potentiometer. It is also possible to manage the residual chlorine after injection by preparing a calibration curve based on the change in redox potential based on the residual chlorine concentration before and / or after hyponitrous acid injection. Of course, the supply amount may be manually adjusted based on the measured value obtained by each measuring apparatus. It is also possible to install a residual chlorine concentration measuring device at a predetermined position in the white water circulation path and measure the residual chlorine concentration in the circulating white water.
- the hyponitrous acid supply system 200 can be configured as shown in FIG. That is, dilute hydrochloric acid and sodium hypochlorite aqueous solution are supplied to the mixers 5 and 6 from the sodium hypochlorite or sodium chlorite aqueous solution tank 1 and the dilute hydrochloric acid tank 2 through the quantitative pump 3.4. Separately, industrial water is supplied to mixers 5 and 6. Here, dilute hydrochloric acid and sodium hypochlorite aqueous solution are diluted with industrial water and adjusted to a pH of 4 to 6.5 and a concentration of 1000 to 10,000 ppm, preferably 3000 to 8000 ppm.
- the aqueous sodium hypochlorite solution is supplied via a pipe to the water end pit 110 at the water end or to the channel drain pit.
- the pipe is provided with a generated water header 9 provided with a control valve, and adjusts the amount of water supplied to the white water pit or chest drain pit at the water end.
- 10 is a power control panel that controls the supply amount of water, sodium hypochlorite or sodium chlorite aqueous solution and dilute hydrochloric acid to the mixer, and controls the control valve of the header 9, white water pit 110, drain pit.
- the amount of hyponitrous water supplied to 120 is controlled.
- 7 is a hypochlorous acid sub tank
- 8 is a dilute hydrochloric acid sub tank.
- a measuring device attached to a white water pit or chest drain pit at the water end for measuring the residual chlorine concentration in white water transmits the measurement signal to the power control panel 10 to dilute hypochlorous acid.
- the amount of soda or sodium chlorite aqueous solution added to the water end white water pit or chest drain pit is adjusted, but the residual chlorine concentration in the white water circulation is 0.1 to 3 ppm, at most 5 ppm, or white water Outside the circulation system, residual chlorine is preferably controlled to less than lppm.
- the number of bacteria in the white water circulation can be controlled to 10 5 or less, preferably 10 4 or less. It has been confirmed that such residual chlorine concentration does not cause the formation of harmful trihalomethanes.
- Used waste paper type Used office waste paper collected from the office (mixed with high-quality waste paper and medium-quality waste paper) was subjected to the following bleaching treatment before paper making.
- Residual ink amount The area of ink in a fixed visual field was expressed as a percentage (%) using a microscope (10 times) and an image analyzer (LA-525 manufactured by Pierce).
- Waste office paper was thrown into the pulper and disintegrated.
- the pulper conditions are pulp concentration 4.5%, temperature 26 ° C, NaOH 0. 0%.
- the pulp concentration is 18%.
- the dewatered waste paper pulp was allowed to stay in the aging tower for 12 hours.
- the pulp was diluted to 3.5%, and the pulp drawn from the aging tower was dedusted with Jansson Stephene and FN screen, and then washed with an extractor.
- a sodium hypochlorite aqueous solution of pH 5 and 3000 ppm was added, kneading was carried out with a kneader, and the mixture was retained in the bleaching tower.
- the conditions of the bleaching tower are as follows: pulp concentration 29%, temperature 36 ° C, bleaching time 10 hours. Next, the pulp concentration was diluted to 3.5%, and the pulp drawn from the tower was washed with an extractor.
- a sodium hypochlorite aqueous solution having a pH of 5 and 3000 ppm was added, and kneading was carried out with a kneader, which was retained in the bleaching tower.
- the conditions for the bleaching tower are as follows: pulp concentration 28%, temperature 40 ° C, bleaching time 10 hours. After bleaching, it was diluted to 3.5%, pulled out from the tower, adjusted to pH, and sent to the machine table. Next, after adjusting the pulp concentration, dust removal was performed with a centricleaner, and then the same papermaking process as in Example 1 was performed.
- Kraft panolep (whiteness 47.2%, kappa monovalent 9.9) dry mass 80. Og in a plastic bag after alkaline bleaching and after adjusting the pulp concentration to 10% using ion-exchanged water After adding sodium hypochlorite aqueous solution at pH 4.5, lOOOOppm, and soaking at room temperature for 60 minutes, the first stage bleaching was performed. The obtained pulp was diluted to 3% with ion-exchanged water, then dehydrated and washed with a Buchner funnel.
- the pulp is put into a plastic bag, adjusted to a pulp concentration of 10% using ion-exchanged water, and then an aqueous solution of sodium hypochlorite with pH 6, 1500 ppm is added and treated at room temperature for 180 minutes. The last stage was bleached. A bleached pulp having a whiteness of 80% was obtained. Measure the potassium permanganate value of the obtained bleached pulp, the amount of hexeneuronic acid, and the PC value after 48 hours of the bleached pulp sheet produced from this bleached pulp.
- Example 2 The same operation as in Example 2 was performed except that sodium hypochlorite was used as the hypochlorous acid. Pulp after sodium hypochlorite treatment was not sufficiently bleached and whiteness was not good
- Figure 4 shows a flow chart of recycled recycled paper.
- a white water tank, a scum recovery tank, and a pulper tank are charged with 3000 ppm sodium hypochlorite aqueous solution at pH 5-6 in consideration of the amount of water. Adjust the pulper tank to 10 ⁇ 5ppm so that it is ⁇ 30ppm.
- 301 is a hydrochloric acid tank that contains 10% dilute hydrochloric acid
- 302 is a sodium hypochlorite aqueous solution tank that contains a 10% aqueous solution
- the first and second pumps are connected via liquid feed pumps 303 and 304.
- the specified dilute hydrochloric acid and sodium hypochlorite aqueous solution are sent to the reserve tanks 307 and 308 of 5,306.
- the dilute hydrochloric acid and the sodium hypochlorite aqueous solution are mixed while diluted with river water to make a 3000 ppm sodium hypochlorite aqueous solution at pH 5-6.
- This hypochlorous acid aqueous solution is first sent to a pulper tank 310 by a pump 309, where it is put into a pulper made of waste paper and water.
- a pulper tank 310 Considering the amount of water used and sterilizing and deodorizing effect 10 ⁇ : ⁇ Although it is adjusted to pm, it is preferable to start with a high concentration at first.
- the pulper is sent to the chest tanks 311 and 311 and is fed from the white water tank 313 to the papermaking machine 312. Since the white water tank 313 is in a circulation mode, 3000 ppm of sodium hypochlorite aqueous solution is introduced into the white water tank in consideration of the amount of water used and sterilization and deodorizing effect, and adjusted to 100 to 1 Oppm, especially 30 to 20 ppm. .
- the chest drain pit 314 is preferably sterilized and deodorized in the same manner as the pulper tank 1 described above. The same sterilization / deodorization treatment may be performed on the chest tank 311 as well.
- the waste water from the above-described tank 311 and paper machine 312 is collected in the chest drain pit 314, treated in the waste water treatment tank 315, sludge collected in the sludge treatment tank 316, and sludge pit 318 from the sludge return device 317.
- the scum is collected via the sludge, and the sludge treated waste water is discharged from the sludge treatment device 316.
- 5 to 7 schematically show a preferred embodiment of the deodorizing method in the paper mill equipment of the present invention.
- 12% sodium hypochlorite aqueous solution is stored in the hypochlorous acid storage tank 410
- 9% dilute hydrochloric acid is stored in the dilute hydrochloric acid storage tank 411, for example.
- the sodium hypochlorite aqueous solution and dilute hydrochloric acid in these storage tanks 410 and 411 are sent to the sub tanks 421 and 422 in the concentrated sodium hypochlorite aqueous solution production apparatus 420 by the feed pipes 414 and 415 and the pumps 412 and 413.
- the feed pipes 414 and 415 and the pumps 412 and 413 has been.
- Types 423 and 424 are connected to the generator 422, and in the generator 425, 9% dilute hydrochloric acid and 12% sodium hypochlorite aqueous solution are mixed.
- a tap water supply pipe 429 is connected to the generator 425, and a filter 4210 and a pressure reducing valve 4211 are provided in the middle of the tap water supply pipe 429, and contaminants are filtered by the filter 4210. Then, tap water depressurized to 0.25 MPa, for example, by the pressure reducing valve 4211 is supplied to the generator 425, and a hydrochloric acid acidic high-concentration sodium hypochlorite aqueous solution has a pH of 5 or more and less than pH 6. Within this range, the effective chlorine concentration is within a range of 1000 ppm to 10000 ppm, for example, 6000 ppm, so that it is diluted with tap water.
- the generated high-concentration sodium hypochlorite aqueous solution is stored in the generated water storage tank 427, and is sent to the scrubber 430 by the water pump 428.
- the average particle diameter is increased by ultrasonic vibration.
- a duct 441 extending from the paper mill facility is connected to the entrance 440B of the processing chamber 440, and a fan 442 driven by a motor 442A is provided in the middle of the duct 441 to process odorous air in the factory. Room 440 has been introduced.
- a partition wall 440A is provided in the processing chamber 440, and a passage 440D bent into a crank shape from the inlet 440B force to the outlet 44C of the processing chamber 440 is formed.
- a photocatalyst deodorizer 443 is provided at the outlet 440B of the processing chamber 440.
- This photocatalyst deodorizer 443 has a built-in carrier such as a wire mesh carrying a photocatalyst and an ultraviolet lamp (not shown), and UV-A wave (wavelength 300 ⁇ m to 400 ⁇ m) ultraviolet rays.
- the photocatalyst such as titanium dioxide (TiO 2) thin film
- the titanium dioxide thin film e- (electrons) and h + (holes) it is made and the h + (holes) OH (Hydroxyl radical) is generated, and malodorous components are decomposed by its oxidizing power (twice that of oxygen).
- the fan 442 of the duct 441 is driven by the motor 442 A, and air containing bad odor in the factory is sucked into the duct 441 and introduced into the processing chamber 440.
- This air flows in the bent processing chamber 440 through the passage 440D toward the outlet 440C, and comes into contact with the mist droplets of the high-concentration sodium hypochlorite aqueous solution to be deodorized.
- the photocatalytic deodorizer It is sent into 443, further deodorized by the photocatalyst, and released to the atmosphere.
- FIG. 1 is a schematic view of a white water circulation system equipped with a hyponitrous supply system according to the present invention.
- FIG. 2 is a schematic diagram showing a specific example of the control system of the present invention.
- FIG. 3 is an explanatory view of an action mechanism of the paper making method of the present invention.
- FIG. 4 is a schematic diagram showing an example of a system used in the used paper recycling papermaking method of the present invention.
- FIG. 5 is an overall configuration diagram schematically showing a preferred embodiment of a deodorizing method in the paper mill equipment of the present invention.
- FIG. 6 is a plan view showing a structure of a processing chamber in the embodiment.
- FIG. 7 is a side view showing the structure of the processing chamber.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007522193A JP5231804B2 (ja) | 2005-06-22 | 2005-12-14 | 製紙方法 |
US11/922,880 US20090114353A1 (en) | 2005-06-22 | 2005-12-14 | Method of Papermaking |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005181533 | 2005-06-22 | ||
JP2005-181533 | 2005-06-22 |
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WO2006137183A1 true WO2006137183A1 (ja) | 2006-12-28 |
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PCT/JP2005/022941 WO2006137183A1 (ja) | 2005-06-22 | 2005-12-14 | 製紙方法 |
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US (1) | US20090114353A1 (ja) |
JP (1) | JP5231804B2 (ja) |
CN (1) | CN101208477A (ja) |
WO (1) | WO2006137183A1 (ja) |
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- 2005-12-14 US US11/922,880 patent/US20090114353A1/en not_active Abandoned
- 2005-12-14 WO PCT/JP2005/022941 patent/WO2006137183A1/ja active Application Filing
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- 2005-12-14 CN CNA2005800502172A patent/CN101208477A/zh active Pending
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JP2000220088A (ja) * | 1999-01-26 | 2000-08-08 | Nippon Paper Industries Co Ltd | パルプの漂白方法 |
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Cited By (12)
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JP2010100945A (ja) * | 2008-10-21 | 2010-05-06 | Kurita Water Ind Ltd | 紙の製造方法 |
JP2010133046A (ja) * | 2008-12-03 | 2010-06-17 | Somar Corp | 製紙工程におけるスライムコントロール方法 |
JP2014218773A (ja) * | 2010-11-25 | 2014-11-20 | 栗田工業株式会社 | 紙を製造する方法 |
JP2012152510A (ja) * | 2011-01-28 | 2012-08-16 | Tech Corporation:Kk | 小型古紙再生装置における洗浄水及び被洗浄物の除菌方法 |
WO2015005404A1 (ja) * | 2013-07-09 | 2015-01-15 | 栗田工業株式会社 | スライム抑制方法 |
JP2015017334A (ja) * | 2013-07-09 | 2015-01-29 | 大王製紙株式会社 | スライム抑制方法 |
JP2015017333A (ja) * | 2013-07-09 | 2015-01-29 | 大王製紙株式会社 | スライム抑制方法 |
JP2019023207A (ja) * | 2015-09-16 | 2019-02-14 | 株式会社フリーキラ製薬 | 次亜塩素酸を含む抗微生物剤 |
JP2021107611A (ja) * | 2019-11-12 | 2021-07-29 | 栗田工業株式会社 | 懸濁物質の堆積抑制方法、ピッチ障害の抑制方法および懸濁物質の堆積検出方法 |
JP7052907B2 (ja) | 2019-11-12 | 2022-04-12 | 栗田工業株式会社 | 懸濁物質の堆積抑制方法、ピッチ障害の抑制方法および懸濁物質の堆積検出方法 |
WO2021235056A1 (ja) * | 2020-05-22 | 2021-11-25 | 栗田工業株式会社 | 水槽内における硫化水素発生抑制方法 |
JP2021183741A (ja) * | 2020-05-22 | 2021-12-02 | 栗田工業株式会社 | 水槽内における硫化水素発生抑制方法 |
Also Published As
Publication number | Publication date |
---|---|
US20090114353A1 (en) | 2009-05-07 |
JPWO2006137183A1 (ja) | 2009-01-08 |
CN101208477A (zh) | 2008-06-25 |
JP5231804B2 (ja) | 2013-07-10 |
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