CN106192502B - A kind of method for improving P-RC APMP legal systems slurry bleaching filtrate utilization rate - Google Patents
A kind of method for improving P-RC APMP legal systems slurry bleaching filtrate utilization rate Download PDFInfo
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- CN106192502B CN106192502B CN201610563691.5A CN201610563691A CN106192502B CN 106192502 B CN106192502 B CN 106192502B CN 201610563691 A CN201610563691 A CN 201610563691A CN 106192502 B CN106192502 B CN 106192502B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- 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
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The present invention relates to chemical-mechanical pulping fields, are to pre-processing alkaline hydrogen peroxide mechanical pulp（P‑RC APMP）The improvement of pulping process, and in particular to a kind of method for improving P RC APMP legal systems slurry bleaching liquid utilization ratio, the P RC APMP method slurrying include the following steps：Wood chip obtains slurry by decatize, 1# extrusion spirals, 1# pre-preg reaction warehouse, 2# extrusion spirals and 2# pre-preg reaction warehouses successively；The slurry finally reaches storage slurry tower and completes slurrying once by the main mills of 1#, medium consistency bleaching tower, 1# propelling worms, high density hypo tower, 2# propelling worms, the main mills of 2#, reserving tower, 3# propelling worms, then through latent, low dense mill, screening and the thickener of disappearing.The present invention is by being more conducive to the bleaching liquid multistage distribution for giving full play to drift agent and acting on, in combination with the adverse current reuse of bleaching filtrate, farthest to improve the utilization ratio of bleaching liquid.
Description
Technical field
The present invention relates to chemical-mechanical pulping fields, are to pre-processing alkaline hydrogen peroxide mechanical pulp（P-RC APMP）
A kind of improvement of pulping process, and in particular to method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio.
Background technology
P-RC APMP method slurrying is after chemical thermomechanical pulp（BCTMP）And alkaline hydrogen peroxide mechanical pulp（APMP）It
The technique for chemomechanical pulp-making of new generation developed afterwards is known as the pulping process of " 21st century most development potentiality ".The technique
Slurrying and bleaching are synchronously completed using alkaline hydrogen peroxide maceration extract, with production procedure is simple, paper pulp yield is high, production line is built
If low with operating cost wait remarkable advantages, it is often more important that the chemical drugs of a small amount of totally nontoxic are only used in entire production process
Product greatly reduce the pollutional load of pulping waste liquor, be at present applied to commodity production pulping process in it is the most clean it
One.Nevertheless, the environmentally friendly potential of P-RC APMP techniques how is further excavated, energy-saving, raising product quality, still
It is the target that numerous practitioners constantly pursue.
Compared with the APMP techniques that all bleaching actions are just completed before defibrination, the core of P-RC APMP pulping process is wood
Piece carries out mild pre-preg before refining（Main softening wood chip, reduces bleaching action early period）, handled with mill and promote slurry
Bleaching action（After main bleaching action is placed in defibrination, bleaching efficiency is improved）And bleaching action before refining after point
Match.It can be seen that it is that P-RC APMP techniques surround improved center of gravity to improve bleaching action efficiency.But inevitable, P-RC
APMP bleaching liquid 100% can not play a role, and still can remain a certain amount of H after drift in filtrate2O2、NaOH、Na2SiO3、DTPA
Chemical agents are waited, if not improving the utilization ratio of chemical agent as far as possible, on the one hand can cause to waste, increase chemicals and disappear
On the other hand consumption also increases burden to follow-up sewage disposal.
Invention content
In order to solve the above technical problem, the present invention provides a kind of new P-RC APMP bleaching liquid Utilization plans, this hairs
Bright realized by following proposal：
A kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio, above-mentioned P-RC APMP methods slurrying include with
Lower step：Wood chip passes through decatize, 1# extrusion spirals, 1# pre-preg reaction warehouse, 2# extrusion spirals and 2# pre-preg reaction warehouses successively
Obtain slurry；Above-mentioned slurry once passes through the main mills of 1#, medium consistency bleaching tower, 1# propelling worms, high density hypo tower, 2# propelling worms, 2#
Main mill, reserving tower, 3# propelling worms, then through latent, low dense mill, screening and the thickener of disappearing, finally arrival storage slurry tower completes slurrying, on
The allocation proportion that bleaching liquid is stated in medium consistency bleaching tower, high density hypo tower and reserving tower is followed successively by：30-55%, 40-60%, 10-25%,
Percentage refers to mass percent herein.
Preferably, the filtrate of above-mentioned 2# propelling worms and the extraction of 3# propelling worms, which merges, is sent to medium consistency bleaching tower, after merging
The 30-60% of filtrate quality, which is delivered to medium consistency bleaching tower subsequent supervention is mixed with fresh bleaching liquid, waves blanching effect, filtrate after merging
Remainder be used to dilute the discharging of medium consistency bleaching tower；The filtrate of 1# propelling worms extraction is routed directly to the concentration of evaporation station.
Preferably, pre-preg quality of liquid medicine and pre-preg liquid in 2# pre-preg reaction warehouses in above-mentioned 1# pre-preg reaction warehouse
Mass ratio is 5:5-7:3；In above-mentioned 1# pre-preg reaction warehouse in pre-preg liquid and 2# pre-preg reaction warehouses in pre-preg liquid
Drug type it is identical.
More preferably, pre-preg liquid total amount includes following substances in above-mentioned 1# pre-preg reaction warehouse：0.5-5%'s
H2O2, the H of the DTPA of the NaOH of 1-8%, 0.1-0.5%, 0.5-5%2O2Refer to H in 1# pre-preg reaction warehouses2O2Quality and over dry
The mass ratio of raw material is 0.5-5%, and similarly the percentage composition of NaOH and DTPA also refers to the mass ratio with over dry raw material, pre-preg
Also contain water in liquid；Pre-preg drug total amount includes following substances in above-mentioned 2# pre-preg reaction warehouse：The H of 0.5-5%2O2, 1-
The DTPA of 8% NaOH, 0.1-0.5%.
More preferably, immersion condition is in above-mentioned 1# pre-preg reaction warehouse：Temperature 50-95oC starches dense 10-30%, when
Between 20-100 minutes, starch the matter that dense 10-30% refers to all substances in the quality and whole system of paper pulp in 1# pre-preg reaction warehouses
Amount is than being 10-30%；Immersion condition is in above-mentioned 2# pre-preg reaction warehouse：Temperature 50-95oC starches dense 10-30%, time 20-
100 minutes, starch the mass ratio that dense 10-30% refers to all substances in the quality and whole system of paper pulp in 2# pre-preg reaction warehouses
For 10-30%.
Particularly, above-mentioned bleaching liquid includes following substances：The H of 5-10%2O2, the Na of the NaOH of 3-6%, 2-6%2SiO3, this
Place's percentage refers to the quality of certain substance and the mass ratio of over dry raw material in bleaching liquid.
Finally, the reaction condition of above-mentioned medium consistency bleaching tower：Temperature 60-95oC, starches dense 15-30%, time 25-100 minute,
It starches dense 15-30% and refers to that the mass ratio of all substances in the quality and whole system of paper pulp in medium consistency bleaching tower is 15-30%；It is above-mentioned
High density hypo tower reaction condition：Temperature 70-95oC, starches dense 25-35%, time 25-100 minute, starch dense 25-35% refer to it is highly concentrated
The mass ratio of all substances is 25-35% in the quality and whole system of paper pulp in bleaching tower；Above-mentioned reserving tower reaction condition：Temperature
Spend 60-95oC starches dense 20-35%, and time 15-60 minute starches dense 20-35% and refers to the quality of paper pulp and entire system in reserving tower
The mass ratio of all substances is 20-35% in system.
P-RC APMP bleaching liquid is divided into three parts of different proportion, successively in medium consistency bleaching tower, high density hypo tower and stop
Tower adds in, and the slurry of abundant grinding is made to remain to the strong fresh bleaching liquor of contact bleaching power in bleaching latter stage；Pass through after the completion of bleaching
Propelling worm extracts bleaching filtrate, adverse current reuse dense drift into after the bleaching filtrate that reserving tower and high density hypo tower extract is merged
White Tower, allows wherein relatively large number of remnants H2O2Continue to play blanching effect, it is remaining in the bleaching filtrate that medium consistency bleaching tower extracts
H2O2At least, Organic leachabkes are most, directly evaporator section sent to be concentrated.
The method have the characteristics that：
1st, the multistage distribution by bleaching liquid after each defibrination section, makes the slurry by abundant grinding be remained in the bleaching later stage
Fresh bleaching liquor is touched, improves the function and effect of fresh bleaching liquor；More remnants H are contained by the collection bleaching later stage2O2It is and organic
The relatively low filtrate of leachable concentration is reversely flowd back towards for drift section dense in the initial stage of bleaching, and is taken full advantage of remaining drift agent, is improved drift
The whole service efficiency of white liquor；
The 2nd, bleaching filtrate containing a certain amount of remaining drift agent is used as to the dilution water of medium consistency bleaching tower, reduce this section of clear water
Or the addition of other low dense recycle-waters, alleviate the burden that follow-up waste liquid evaporates；
3rd, pass through the present invention, in the case where reaching equal pulp brightness, the drift agent consumption ratio of P-RC APMP production lines
Original technique reduces 4 ~ 11% or in the case of identical drift agent addition, and pulp brightness improves 2 ~ 5 %ISO.
The present invention is by being more conducive to the bleaching liquid multistage distribution for giving full play to drift agent and acting on, in combination with bleaching filtrate
Adverse current reuse, farthest to improve the utilization ratio of bleaching liquid.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
It elaborates with reference to embodiment to the present invention, but does not therefore limit the present invention.
Embodiment 1
A kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio, the slurrying of P-RC APMP methods include following step
Suddenly：Wood chip must be starched successively by decatize, 1# extrusion spirals, 1# pre-preg reaction warehouse, 2# extrusion spirals and 2# pre-preg reaction warehouse
Material；Slurry once passes through the main mills of 1#, medium consistency bleaching tower, 1# propelling worms, high density hypo tower, 2# propelling worms, the main mills of 2#, stop
Tower, 3# propelling worms, then through latent, low dense mill, screening and the thickener of disappearing, finally reach storage slurry tower and complete slurrying；2# propelling worms
Merge with the filtrate of 3# propelling worms extraction and be sent to medium consistency bleaching tower, the 55% of filtrate is delivered to medium consistency bleaching tower after above-mentioned merging
Subsequent supervention is mixed with fresh bleaching liquid and waves blanching effect, filtrate remaining 45% is used to dilute going out for medium consistency bleaching tower after merging
Material；The filtrate of 1# propelling worms extraction is routed directly to the concentration of evaporation station；Pre-preg quality of liquid medicine and 2# in 1# pre-preg reaction warehouses
Pre-preg quality of liquid medicine ratio is 1 in pre-preg reaction warehouse:1；Pre-preg liquid is reacted with 2# pre-preg in 1# pre-preg reaction warehouses
The type of drug is identical in pre-preg liquid in storehouse；The pre-preg liquid of 1# pre-preg reaction warehouses is configured to：H2O2Dosage 0.6%,
NaOH dosages 1.2%, DTPA dosages 0.1%, the pre-preg liquid of 2# pre-preg reaction warehouses are configured to：H2O2Dosage 0.5%, NaOH are used
Measure 1%, DTPA dosages 0.08%；Immersion condition is in 1# pre-preg reaction warehouses：Temperature 80oC, slurry dense 15%, 30 minutes time；2#
Immersion condition is in pre-preg reaction warehouse：Temperature 80oC, slurry dense 15%, 30 minutes time；Bleaching liquid is in medium consistency bleaching tower, highly concentrated
The allocation proportion of bleaching tower and reserving tower is followed successively by：35%、50%、15%；Bleaching liquid includes following substances：5.5% H2O2, 3%
NaOH, 2.5% Na2SiO3；The reaction condition of medium consistency bleaching tower：Temperature 85oC, slurry dense 20%, 40 minutes time；High density bleaching
Tower reaction condition：Temperature 90 oC, slurry dense 27%, 35 minutes time；Reserving tower reaction condition：90 oC of temperature, slurry dense 25%, time
20 minutes, after the bleaching filtrate that 2# propelling worms and 3# propelling worms extract merges, contain after measured：H2O2, 3.8 g/L；
NaOH, 1.2 g/L, it is final to obtain the poplar P-RC APMP slurries that whiteness is 74.8 %ISO by above-mentioned technological process, than phase
With original technique under drift agent dosage, whiteness improves 3.1 %ISO.
Embodiment 2
A kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio, the slurrying of P-RC APMP methods include following step
Suddenly：Wood chip must be starched successively by decatize, 1# extrusion spirals, 1# pre-preg reaction warehouse, 2# extrusion spirals and 2# pre-preg reaction warehouse
Material；Slurry once passes through the main mills of 1#, medium consistency bleaching tower, 1# propelling worms, high density hypo tower, 2# propelling worms, the main mills of 2#, stop
Tower, 3# propelling worms, then through latent, low dense mill, screening and the thickener of disappearing, finally reach storage slurry tower and complete slurrying；2# propelling worms
Merge with the filtrate of 3# propelling worms extraction and be sent to medium consistency bleaching tower, the 65% of filtrate is delivered to medium consistency bleaching tower after above-mentioned merging
Subsequent supervention is mixed with fresh bleaching liquid and waves blanching effect, filtrate remaining 35% is used to dilute going out for medium consistency bleaching tower after merging
Material；The filtrate of 1# propelling worms extraction is routed directly to the concentration of evaporation station；Pre-preg drug quality and 2# in 1# pre-preg reaction warehouses
Pre-preg drug quality ratio is 2 in pre-preg reaction warehouse:1；Pre-preg liquid is reacted with 2# pre-preg in 1# pre-preg reaction warehouses
The type of pre-preg liquid is identical in storehouse；The pre-preg liquid of 1# pre-preg reaction warehouses is configured to：H2O2Dosage 4.3%, NaOH are used
7.1%, DTPA dosages 0.44% are measured, the pre-preg liquid of 2# pre-preg reaction warehouses is configured to：H2O2Dosage 4.5%, NaOH dosages
7.5%, DTPA dosage 0.40%；Immersion condition is in 1# pre-preg reaction warehouses：60 oC of temperature, slurry dense 15%, 60 minutes time；2#
Immersion condition is in pre-preg reaction warehouse：Temperature 75oC, slurry dense 20%, 75 minutes time；Bleaching liquid is in medium consistency bleaching tower, highly concentrated
The allocation proportion of bleaching tower and reserving tower is followed successively by：40%、50%、10%；Bleaching liquid includes following substances：8% H2O2, 5%
NaOH, 4% Na2SiO3；The reaction condition of medium consistency bleaching tower：Temperature 67oC, slurry dense 20%, 60 minutes time；High density hypo tower
Reaction condition：Temperature 87oC, slurry dense 28%, 70 minutes time；Reserving tower reaction condition：Temperature 87oC, slurry dense 30%, time 45
Minute, after the bleaching filtrate merging of 2# propelling worms and the extraction of 3# propelling worms, contain after measured：H2O2, 3.9 g/L；NaOH,
1.1 g/L, it is final to obtain the poplar P-RC APMP slurries that whiteness is 75.2 %ISO by above-mentioned technological process, than identical drift agent
Original technique under dosage, whiteness improve 3.66 %ISO.
Claims (6)
- A kind of 1. method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio, which is characterized in that the P-RC APMP methods Slurrying includes the following steps：Wood chip is pre- by decatize, 1# extrusion spirals, 1# pre-preg reaction warehouse, 2# extrusion spirals and 2# successively Impregnation storehouse obtains slurry；The slurry is once pressed by the main mills of 1#, medium consistency bleaching tower, 1# propelling worms, high density hypo tower, 2# Pressing screw rotation, the main mills of 2#, reserving tower, 3# propelling worms, then through latent, low dense mill, screening and the thickener of disappearing, it is complete finally to reach storage slurry tower Into slurrying, bleaching liquid is followed successively by the allocation proportion of medium consistency bleaching tower, high density hypo tower and reserving tower：30-50%、40-55%、 10-25%；The filtrate of the 2# propelling worms and the extraction of 3# propelling worms, which merges, is sent to medium consistency bleaching tower, filtrate quality after merging 30-60% be delivered to medium consistency bleaching tower subsequent supervention mixed with fresh bleaching liquid and wave blanching effect, the remainder of filtrate after merging Divide the discharging for diluting medium consistency bleaching tower；The filtrate of the 1# propelling worms extraction is routed directly to the concentration of evaporation station.
- 2. a kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio as described in claim 1, feature exist In pre-preg quality of liquid medicine and pre-preg quality of liquid medicine ratio in 2# pre-preg reaction warehouses are 5 in the 1# pre-preg reaction warehouse:5- 7:3；The type phase of pre-preg liquid and drug in pre-preg liquid in 2# pre-preg reaction warehouses in the 1# pre-preg reaction warehouse Together.
- 3. a kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio as described in claim 1, feature exist In pre-preg liquid includes following substances in the 1# pre-preg reaction warehouse：The H of 0.5-5%2O2, the NaOH of 1-8%, 0.1-0.5% DTPA；Pre-preg liquid includes following substances in the 2# pre-preg reaction warehouse：The H of 0.5-5%2O2, the NaOH of 1-8%, 0.1- 0.5% DTPA.
- 4. a kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio as described in claim 1, feature exist In immersion condition is in the 1# pre-preg reaction warehouse：Temperature 50-95 oC starches dense 10-30%, time 20-100 minute；It is described Immersion condition is in 2# pre-preg reaction warehouses：Temperature 50-95oC starches dense 10-30%, time 20-100 minute.
- 5. a kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio as described in claim 1, feature exist In the bleaching liquid includes following substances：The H of 5-10%2O2, the Na of the NaOH of 3-6%, 2-6%2SiO3。
- 6. a kind of method for improving P-RC APMP legal systems slurry bleaching liquid utilization ratio as described in claim 1, feature exist In the reaction condition of the medium consistency bleaching tower：Temperature 60-95oC starches dense 15-30%, time 25-100 minute；The highly concentrated drift White Tower reaction condition：Temperature 70-95oC starches dense 25-35%, time 25-100 minute；The reserving tower reaction condition：Temperature 60-95 oC starches dense 20-35%, time 15-60 minute.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0864011A1 (en) * | 1995-11-29 | 1998-09-16 | Clextral | Method and apparatus for continuously preparing cellulose pulp |
| CN1900417A (en) * | 2005-07-22 | 2007-01-24 | 周易 | Pulping process for kenaf alkaline hydrogen peroxide mechanical pulping |
| CN101613976A (en) * | 2009-07-17 | 2009-12-30 | 中国林业科学研究院林产化学工业研究所 | Utilize the method for whole straw of mulberry tree branch preparing bleached chemi-mechanical pulp |
| CN102242514A (en) * | 2011-06-07 | 2011-11-16 | 华南理工大学 | Paper pulp high density bleaching method |
| CN102251427A (en) * | 2011-07-28 | 2011-11-23 | 华南理工大学 | Two-stage high-efficiency bleaching method for poplar chemical-mechanical pulp |
| CN102561083A (en) * | 2012-02-21 | 2012-07-11 | 天津科技大学 | Method for bleaching broadleaf wood pre-conditioning refiner chemical pretreatment alkaline peroxide mechanical pulp (P-RC APMP) by using H2O2/optical brightening agent (OBA) |
| CN102817267A (en) * | 2012-07-24 | 2012-12-12 | 天津科技大学 | Method for enhancing using effect of magnesium oxide in P-RC APMP (Preconditioning-Refiner Chemical Treatment Alkaline Peroxide Mechanical Pulp) production by grinding pretreatment |
| CN104711880A (en) * | 2015-01-26 | 2015-06-17 | 汶瑞机械(山东)有限公司 | Chemi-mechanical pulp manufacturing technology |
-
2016
- 2016-07-18 CN CN201610563691.5A patent/CN106192502B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0864011A1 (en) * | 1995-11-29 | 1998-09-16 | Clextral | Method and apparatus for continuously preparing cellulose pulp |
| CN1900417A (en) * | 2005-07-22 | 2007-01-24 | 周易 | Pulping process for kenaf alkaline hydrogen peroxide mechanical pulping |
| CN101613976A (en) * | 2009-07-17 | 2009-12-30 | 中国林业科学研究院林产化学工业研究所 | Utilize the method for whole straw of mulberry tree branch preparing bleached chemi-mechanical pulp |
| CN102242514A (en) * | 2011-06-07 | 2011-11-16 | 华南理工大学 | Paper pulp high density bleaching method |
| CN102251427A (en) * | 2011-07-28 | 2011-11-23 | 华南理工大学 | Two-stage high-efficiency bleaching method for poplar chemical-mechanical pulp |
| CN102561083A (en) * | 2012-02-21 | 2012-07-11 | 天津科技大学 | Method for bleaching broadleaf wood pre-conditioning refiner chemical pretreatment alkaline peroxide mechanical pulp (P-RC APMP) by using H2O2/optical brightening agent (OBA) |
| CN102817267A (en) * | 2012-07-24 | 2012-12-12 | 天津科技大学 | Method for enhancing using effect of magnesium oxide in P-RC APMP (Preconditioning-Refiner Chemical Treatment Alkaline Peroxide Mechanical Pulp) production by grinding pretreatment |
| CN104711880A (en) * | 2015-01-26 | 2015-06-17 | 汶瑞机械(山东)有限公司 | Chemi-mechanical pulp manufacturing technology |
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