CN102337690A - Pulping method for stewing bamboo material by using aluminum salt and retaining silicon at same time - Google Patents
Pulping method for stewing bamboo material by using aluminum salt and retaining silicon at same time Download PDFInfo
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- CN102337690A CN102337690A CN2011103381514A CN201110338151A CN102337690A CN 102337690 A CN102337690 A CN 102337690A CN 2011103381514 A CN2011103381514 A CN 2011103381514A CN 201110338151 A CN201110338151 A CN 201110338151A CN 102337690 A CN102337690 A CN 102337690A
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- silicon
- bamboo
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- sodium
- bamboo chip
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 57
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 57
- 241001330002 Bambuseae Species 0.000 title claims abstract description 57
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 57
- 239000011425 bamboo Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004537 pulping Methods 0.000 title claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 title abstract description 30
- 239000010703 silicon Substances 0.000 title abstract description 30
- 239000000463 material Substances 0.000 title abstract description 6
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 75
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 29
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 17
- 238000009835 boiling Methods 0.000 claims abstract description 17
- 239000011734 sodium Substances 0.000 claims abstract description 16
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 14
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000292 calcium oxide Substances 0.000 claims abstract description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 9
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 40
- 238000010411 cooking Methods 0.000 claims description 17
- 159000000013 aluminium salts Chemical class 0.000 claims description 16
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 29
- 239000000243 solution Substances 0.000 abstract description 8
- 239000012670 alkaline solution Substances 0.000 abstract description 7
- 239000004115 Sodium Silicate Substances 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052911 sodium silicate Inorganic materials 0.000 abstract description 5
- 229910021536 Zeolite Inorganic materials 0.000 abstract description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 239000010457 zeolite Substances 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 229910052814 silicon oxide Inorganic materials 0.000 abstract 1
- 229910052979 sodium sulfide Inorganic materials 0.000 abstract 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 18
- 239000003513 alkali Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 229920001131 Pulp (paper) Polymers 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000004927 clay Substances 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 235000019795 sodium metasilicate Nutrition 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- MWOZJZDNRDLJMG-UHFFFAOYSA-N [Si].O=C=O Chemical class [Si].O=C=O MWOZJZDNRDLJMG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Paper (AREA)
Abstract
The invention relates to a pulping method for stewing bamboo material by using aluminum salt and retaining silicon at the same time, which comprises the following steps: adding solid sodium sulfide, aluminum sulfate, aluminum oxide, calcium oxide or sodium metaaluminate into a sodium hydroxide solution, and uniformly mixing to prepare a boiling liquid; and adding the uniformly mixed boiling liquid into a bamboo strip, boiling, and then spraying and discharging. In the invention, the aluminum sulfate, aluminum oxide, calcium oxide or sodium metaaluminate is added before boiling, and then, boiling is carried out. Experimental researches show that silicon in the bamboo material can be continually dissolved out in an alkaline solution, the alkaline solution continually enters cells at the same time, the silicon dissolved out reacts with the alkaline solution to generate sodium silicate, and the sodium silicate further reacts with the aluminum salt to generate precipitate similar to zeolite; and such precipitate has high adsorbability and can be adsorbed on the surface or at the inside of fibers, thereby preventing the silicon in the material from being dissolved in the alkaline solution and then transferred to a black liquid. Thus, majority of the silicon in the material can be retained on the surface or at the inside of fibers, thereby reducing the content of silicon oxide in the black liquid.
Description
Technical field
The invention belongs to the pulping process of paper industry, be specifically related to the synchronous precipitating-silica pulping method of a kind of bamboo pulp aluminium salt boiling.
Background technology
Non-wood material occupies important proportion in China's pulping and paper-making, wherein bamboo class raw material has advantages such as average fiber length is long, growth cycle is short, but owing to the reason of bamboo class raw material self; Hemicellulose level in the body is high; Dioxide-containing silica accounts for 0.8～1.3% of dry weight, also is easy to generate " silicon interference ", and the existence of silica makes black liquor increase fast in the increase of evaporation process medium viscosity with concentration; Thereby influence the evaporation of black liquor, black liquor is prone to fouling; Because the fusing point of sodium metasilicate is high, causes higher temperature of black-liquor combustion needs and energy consumption; Green liquor mesosilicic acid sodium forms calcium silicates in the causticization process, the sad filter of the fine and smooth difficult deposition of particle causes white clay washing difficulty, and the residual alkali number of white clay is high, and alkali runs off big; The calcium silicates of white clay decomposes burning of lime sludge and reclaims the energy consumption that lime need be very high.
Carried out a large amount of research to " silicon interference " problem of bamboo wood black digestion liquid at present both at home and abroad.The silicon removing process that proposes has following several kinds: it is the technology of before the boiling bamboo chip being carried out alkali preliminary treatment silica removal that the preliminary treatment of bamboo chip alkali removes silicon technology, and the loss of getting the raw materials ready of this technology is big, and the preliminary treatment thermal energy consumption is big, and waste liquid can't be handled and cause new environmental pollution; Black liquor calcium salt silica removal is in black liquor, to add the purpose that lime reaches silica removal, but this technology is discharged about 1/3～1/2 causticization white clay total amount, not only causes alkali loss but also causes new solid waste pollution; Two sections causticization silicon removing process can be removed about 56% silicon, but two step causticization silicon removing process will increase a cover causticization flow process newly, 30% efflux white clay and can cause environmental pollution equally; Though green liquor carbonating silicon removing process can effectively be removed silicon,, need stripping to recover just can send into the causticization section after original character, and can cause the loss of sulphur owing in the silica removal process, cause the pH value to change greatly; The clearance of the saturated carbon dioxide silicon removing process of rare black liquor silicon is higher, but system complex, and must the supplemental hydrogen sodium oxide molybdena behind silica removal to improve black liquor pH value; Dense saturated rare black liquor silicon removing technology silica removal effect is better, but needs a newly-increased cover carbon dioxide generating means, and exists black liquor to replenish the problem of alkali.Above method all solves " silicon interference " problem from the source, and investment that can increase equipment etc.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art; Provide a kind of bamboo pulp aluminium salt boiling synchronous precipitating-silica pulping method; Promptly be before boiling, to add aluminium salt to cooking liquor; The bamboo raw material has suppressed the transfer of silicon in black liquor in the boiling delignification, reduced the dioxide-containing silica in the black liquor.
For achieving the above object, the technical scheme that the present invention adopts is:
1) bamboo is cut into 25～30mm length, the wide bamboo chip of 3～5mm; The concentration of getting bamboo chip dry weight 22～25% then is the sodium hydroxide solution of 120～130g/L, and 6～6.25% vulcanized sodium, 0～3% calcium oxide and 0.5～1% aluminium salt stir and processes cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 4.5～5.5, rises from room temperature and is warming up to 150 ℃～160 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.
Described aluminium salt is one or more the mixture in sodium metaaluminate solid, aluminum sulfate or the aluminium oxide.
The present invention is directed to conventional bamboo wood sulfate pulping and proposed the pulping process that silicon is stayed in a kind of new boiling synchronously, promptly is before boiling, to add aluminium salt, carries out boiling then.Experimental study is found the silicon continuous stripping of meeting in alkaline solution in the bamboo raw material; Alkaline solution constantly gets in the cell simultaneously; The silicon of stripping and alkaline solution reaction generate sodium metasilicate, and sodium metasilicate further generates the sediment of similar zeolite with the aluminium reactant salt, and this sediment has absorption property; Can be adsorbed on fiber surface or inside; Shift to black liquor after having stoped the silicon in the raw material to be dissolved in alkali lye, the silicon major part in the raw material has been stayed fiber surface and inside like this, and then has reduced the content of silica in the black liquor.Another one characteristics of the present invention be aluminium salt selection and composite on, multiple aluminium salt is superior to single aluminium salt.The synchronous precipitating-silica pulping method technological operation of aluminium salt boiling is convenient, does not need existing equipment adjusted greatly to organize production; The aluminium salt source of adding simultaneously is abundant.
The specific embodiment
Embodiment 1:1) bamboo is cut into long, the wide bamboo chip of 3～5mm of 25～30mm, the concentration of getting bamboo chip dry weight 22% then is the sodium hydroxide solution of 120g/L, and 6% vulcanized sodium and 0.5% sodium metaaluminate solid stir and process cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 4.5, rises from room temperature and is warming up to 150 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.Stay the silicon effect with paper pulp screened yield, kappa value, slurry ash content and dioxide-containing silica, leading indicators such as black liquor dioxide-containing silica are represented.Screened yield 43.56%, kappa value 25, slurry ash content 1.35%, slurry dioxide-containing silica 0.65%, black liquor dioxide-containing silica 0.25%.
Embodiment 2:1) bamboo is cut into long, the wide bamboo chip of 3～5mm of 25～30mm, the concentration of getting bamboo chip dry weight 23% then is the sodium hydroxide solution of 125g/L, and 6.25% vulcanized sodium, 1% calcium oxide and 0.8% aluminum sulfate stir and processes cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 5, rises from room temperature and is warming up to 155 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.Stay the silicon effect with paper pulp screened yield, kappa value, slurry ash content and dioxide-containing silica, leading indicators such as black liquor dioxide-containing silica are represented.Screened yield 43.78%, kappa value 26, slurry ash content 1.45%, slurry dioxide-containing silica 0.69%, black liquor dioxide-containing silica 0.28%.
Embodiment 3:1) bamboo is cut into long, the wide bamboo chip of 3～5mm of 25～30mm, the concentration of getting bamboo chip dry weight 24% then is the sodium hydroxide solution of 125g/L, and 6% vulcanized sodium, 3% calcium oxide and 0.6% aluminium oxide stir and process cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 5.5, rises from room temperature and is warming up to 160 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.Stay the silicon effect with paper pulp screened yield, kappa value, slurry ash content and dioxide-containing silica, leading indicators such as black liquor dioxide-containing silica are represented.Screened yield 44.25%, kappa value 25, slurry ash content 1.50%, slurry dioxide-containing silica 0.72%, black liquor dioxide-containing silica 0.24%.
Embodiment 4:1) bamboo is cut into 25～30mm length, the wide bamboo chip of 3～5mm; The concentration of getting bamboo chip dry weight 25% then is the sodium hydroxide solution of 130g/L, and 6.10% vulcanized sodium, 1.5% calcium oxide, 0.3% sodium metaaluminate solid and 0.6% aluminum sulfate stir and processes cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 4.8, rises from room temperature and is warming up to 153 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.Stay the silicon effect with paper pulp screened yield, kappa value, slurry ash content and dioxide-containing silica, leading indicators such as black liquor dioxide-containing silica are represented.Screened yield 43.55%, kappa value 25, slurry ash content 1.38%, slurry dioxide-containing silica 0.64%, black liquor dioxide-containing silica 0.30%.
Embodiment 5:1) bamboo is cut into 25～30mm length, the wide bamboo chip of 3～5mm; The concentration of getting bamboo chip dry weight 23.5% then is the sodium hydroxide solution of 123g/L, and 6.15% vulcanized sodium, 2.5% calcium oxide, 0.4% sodium metaaluminate solid and 0.3% aluminium oxide stir and process cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 5.2, rises from room temperature and is warming up to 157 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.Stay the silicon effect with paper pulp screened yield, kappa value, slurry ash content and dioxide-containing silica, leading indicators such as black liquor dioxide-containing silica are represented.Screened yield 43.65%, kappa value 25, slurry ash content 1.48%, slurry dioxide-containing silica 0.74%, black liquor dioxide-containing silica 0.32%.
Embodiment 6:1) bamboo is cut into 25～30mm length, the wide bamboo chip of 3～5mm; The concentration of getting bamboo chip dry weight 24.5% then is the sodium hydroxide solution of 128g/L, and 6.25% vulcanized sodium, 2% calcium oxide, 0.2% sodium metaaluminate solid, 0.3% aluminum sulfate and 0.5% aluminium oxide stir and process cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 5.4, rises from room temperature and is warming up to 159 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.Stay the silicon effect with paper pulp screened yield, kappa value, slurry ash content and dioxide-containing silica, leading indicators such as black liquor dioxide-containing silica are represented.Screened yield 43.55%, kappa value 25, slurry ash content 1.43%, slurry dioxide-containing silica 0.66%, black liquor dioxide-containing silica 0.26%.
Claims (2)
1. the synchronous precipitating-silica pulping method of bamboo pulp aluminium salt boiling is characterized in that:
1) bamboo is cut into 25～30mm length, the wide bamboo chip of 3～5mm; The concentration of getting bamboo chip dry weight 22～25% then is the sodium hydroxide solution of 120～130g/L, and 6～6.25% vulcanized sodium, 0～3% calcium oxide and 0.5～1% aluminium salt stir and processes cooking liquor;
2) cooking liquor is joined in the bamboo chip, the mass ratio that adds entry adjusting bamboo chip and liquid again is 1: 4.5～5.5, rises from room temperature and is warming up to 150 ℃～160 ℃ at 150 minutes, under maximum temperature, is incubated 60 minutes the batch turning of spurting.
2. the synchronous precipitating-silica pulping method of bamboo pulp aluminium salt boiling according to claim 1 is characterized in that: described aluminium salt is one or more the mixture in sodium metaaluminate solid, aluminum sulfate or the aluminium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110338151 CN102337690B (en) | 2011-10-31 | 2011-10-31 | Pulping method for stewing bamboo material by using aluminum salt and retaining silicon at same time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110338151 CN102337690B (en) | 2011-10-31 | 2011-10-31 | Pulping method for stewing bamboo material by using aluminum salt and retaining silicon at same time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102337690A true CN102337690A (en) | 2012-02-01 |
| CN102337690B CN102337690B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110338151 Expired - Fee Related CN102337690B (en) | 2011-10-31 | 2011-10-31 | Pulping method for stewing bamboo material by using aluminum salt and retaining silicon at same time |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877361A (en) * | 2012-09-28 | 2013-01-16 | 湖南文理学院 | Silicon retention agent for pulping by grass materials and cooking method |
| CN106283787A (en) * | 2016-09-05 | 2017-01-04 | 陕西科技大学 | A kind of method suppressing sulfate process bamboo wood slurrying silicon dissolution |
| CN112080957A (en) * | 2020-09-18 | 2020-12-15 | 广东鼎丰纸业有限公司 | High-efficiency caustic soda anthraquinone cooking aid and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB381697A (en) * | 1931-09-19 | 1932-10-13 | Erik Ludvig Rinman | Method of relieving alkaline waste liquors from the soda or sulphate pulp manufacture, of silica |
| CN1103450A (en) * | 1993-12-01 | 1995-06-07 | 北京轻工业学院 | Straw pulp black liquor silicon removing method |
-
2011
- 2011-10-31 CN CN 201110338151 patent/CN102337690B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB381697A (en) * | 1931-09-19 | 1932-10-13 | Erik Ludvig Rinman | Method of relieving alkaline waste liquors from the soda or sulphate pulp manufacture, of silica |
| CN1103450A (en) * | 1993-12-01 | 1995-06-07 | 北京轻工业学院 | Straw pulp black liquor silicon removing method |
Non-Patent Citations (1)
| Title |
|---|
| 陈志文: "大型竹浆厂除硅工艺的应用探讨", 《西南造纸》, vol. 34, no. 01, 31 December 2005 (2005-12-31), pages 16 - 19 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877361A (en) * | 2012-09-28 | 2013-01-16 | 湖南文理学院 | Silicon retention agent for pulping by grass materials and cooking method |
| CN106283787A (en) * | 2016-09-05 | 2017-01-04 | 陕西科技大学 | A kind of method suppressing sulfate process bamboo wood slurrying silicon dissolution |
| CN112080957A (en) * | 2020-09-18 | 2020-12-15 | 广东鼎丰纸业有限公司 | High-efficiency caustic soda anthraquinone cooking aid and preparation method thereof |
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| CN102337690B (en) | 2013-04-10 |
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