CN104790243A - Papermaking cooking assistant - Google Patents
Papermaking cooking assistant Download PDFInfo
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- CN104790243A CN104790243A CN201510218169.9A CN201510218169A CN104790243A CN 104790243 A CN104790243 A CN 104790243A CN 201510218169 A CN201510218169 A CN 201510218169A CN 104790243 A CN104790243 A CN 104790243A
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- papermaking
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- 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
- D21C3/00—Pulping cellulose-containing materials
Abstract
The invention relates to the technical field of papermaking, and particularly relates to a papermaking cooking assistant which is prepared from the following raw materials in parts by weight: 10-20 parts of green oxygen, 12-24 parts of sulfated castor oil, 20-30 parts of surfactant, 5-10 parts of phosphate, 5-10 parts of water retention agent and 60-90 parts of deionized water. The papermaking cooking assistant greatly enhances the cooking effect, enhances the raw material permeability, improves the cooking uniformity, quickly adsorbs alkali liquor, increases the transmission speed of the reaction product in the raw materials, accelerates cooking, obviously shortens the cooking time, and greatly improves the pulp quality and paper strength.
Description
Technical field
The present invention relates to pulp technology for making paper, particularly a kind of digesting assistant in use for papermaking.
Background technology
In pulping digestion process, how to heighten the selective of delignification, make the degradation reaction of carbohydrate control minimum, be all the emphasis of pulp-making research all the time, and the interpolation of digesting assistant is current one of mode the most easily, can obtain good economic benefit.
Organic digesting assistant and mineral-type digesting assistant is mainly contained at the auxiliary agent of the interpolation of digestion process, organic digesting assistant mainly comprises anthraquinone (AQ), modification anthraquinone and derivative class thereof, azanol, green oxygen and surfactant-based etc., and mineral-type digestant mainly contains sodium polysulfide, sodium sulfite, phosphoric acid salt, sodium borohydride and sodium dithionite etc.Wherein Anthraquinones digestant is by a lot of national extensive use, but because anthraquinone is insoluble in water, also alkali is insoluble in, mix uneven in digestion process with cooking liquor, be difficult to play its maximum efficiency, the anthraquinone being simultaneously difficult to dissolve also can throw into question when black liquor recovery, and the price of anthraquinone is relatively high, after using anthraquinone auxiliary agent, in pipeline, fouling seriously, is unfavorable for continuous prodution.In chemical pulping process, digesting assistant affects speed, the quality of pulping, the paper pulp yield of delignification to a great extent, and affects the effect of postorder bleaching.The digesting assistant solubility property that current most of slurrying enterprise uses is poor, and to raw material infiltration comparatively slowly, lignin degradation and dissolution time longer, this just causes the material removed and is easily adsorbed once again by fiber, affects quality and the yield of slurry.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of digesting assistant in use for papermaking, and this auxiliary agent can protect cellulose, accelerates delignification's speed, deepens delignified degree, reduces boiling decrement, shortens digestion time.
For achieving the above object, the present invention adopts following technical scheme:
A kind of digesting assistant in use for papermaking, be made up of the raw material of following weight portion:
Green oxygen of the present invention is a kind of synthesized polymer material, dissolubility is good, it itself is a kind of oxidant, add after in cooking liquor, the oxidation-reduction potential of cooking liquor can be made to decline rapidly, make cooking liquor have stronger reducibility, due to the speed of delignification and the reducibility of cooking liquor consistent, so green oxygen has catalytic action in digestion process.Because green oxygen and anthraquinone have identical allylic structure, so it preserves all advantages of anthraquinone, simultaneously, because introducing sulfonic group in its molecular radical, make it have certain surface-activity, so it has very strong soaking, penetrating power, caustic soda can be impelled to be soaked by cellulose surface rapidly and penetrate into inside, accelerate colloid to dissolve and delignification reaction, it can form polymer protective film at fiber surface again simultaneously, the terminal groups of carbohydrate is made to be reduced to alkali stable primary alconol base, thus effectively suppress peeling reaction, protection cellulose, significantly improve pulping yield, in addition, green oxygen also has macromolecule complexing function, color development complexing of metal ion can be shielded, improve the whiteness of paper pulp.
The mixture of the alkyl glycoside of surfactant of the present invention to be mass ratio be 5 ~ 7:3 ~ 5:3 ~ 1, neopelex and Tea Saponin.Surfactant is applied in boiling, mainly utilize its feature that is wetting, that permeate and disperse, it can promote cooking liquor soaking fibrous raw material, accelerate infiltration and the evenly diffusion of boiling chemicals and other chemicals, thus promote cooking liquor removing lignin in timber or non-timber and resin, the effect of dispersion resin can also be played.Schedule of proportion surface-active agent of the present invention can significantly improve effect of impregnation, obviously improves the impregnability of raw material, shortens digestion time, improves the yield of slurry.Preferably, the mixture of the alkyl glycoside of surfactant of the present invention to be mass ratio be 6:4:2, neopelex and Tea Saponin.In surfactant of the present invention, alkyl glycoside has the characteristic of conventional nonionic and anion surfactant concurrently, has high surface, good ecological security and intermiscibility, is internationally recognized first-selection " green " functional surfactant; Neopelex is anionic surfactant, is poisonous material, strong to particulate fouling detergent power, effectively avoids scale formation in pipeline, ensures continuous prodution; Tea Saponin is a kind of nonionic pure natural surfactant of function admirable, and it has stronger emulsification, dispersion, the effect such as wetting, and hardly by the impact of water hardness, reduces pulp hardness.
Poly-aspartate in the present invention is the water-soluble high-molecular substance of a kind of artificial bionic synthesis, has characteristic that is nontoxic, nuisanceless and fully biodegradable, is a kind of internationally recognized " green chemical ".Poly-aspartate, because of the design feature containing peptide bond and carboxyl isoreactivity group, have the effects such as extremely strong chelating, dispersion, absorption, and compatibility is splendid.In addition poly-aspartate also can be used as antisludging agent use, has good scale inhibition effect, suppresses the formation of calcium carbonate scale, calcium sulfate scale, barium sulfate scale and calcium phosphate scale in pipeline.Poly-aspartate also effectively can prevent the corrosion of hardware.
Phosphate of the present invention is sodium phosphate or potassium phosphate.Phosphate and surfactant are applied in digesting assistant simultaneously, have good effect in slurrying, improve pulp yield, reduce boiling temperature.
The mixture of the methylcellulose of water retention agent of the present invention to be mass ratio be 6 ~ 8:4 ~ 6:3 ~ 1, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.By adding water retention agent, ensureing the humidity of slurry, improving into the quality of paper.Preferably, the mixture of the methylcellulose of water retention agent of the present invention to be mass ratio be 7:5:2, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.
The present invention uses deionized water, effectively prevents the chlorine existed in running water from affecting pulp quality, shortens into the operating period of paper.
Preferably, digesting assistant in use for papermaking of the present invention, be made up of the raw material of following weight portion:
Compared with prior art, beneficial effect of the present invention is:
Digesting assistant in use for papermaking of the present invention substantially increases cooking effect, improve raw material permeability, cooking homogeneities improves, alkali lye quick adsorption, accelerate the transmission speed of product in raw material, reduce boiling alkali charge 16 ~ 22%, shorten digestion time 15% ~ 20%, improve the yield 4 ~ 10% of slurry, also reduce slurry Kappa number 6 ~ 10, boiling temperature and pulp hardness can also be reduced, significantly improve the quality of slurry, especially fracture length and folding strength all improve more than 14% ~ 19%, improve into paper surface strength 4% ~ 7%, effectively prevent fouling in pipeline, ensure consecutive production.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited to these embodiments.
Embodiment 1
Take the raw material of following weight portion:
The mixture of the alkyl glycoside of described surfactant to be mass ratio be 5:3:1, neopelex and Tea Saponin.
The mixture of the methylcellulose of described water retention agent to be mass ratio be 6:4:1, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.
Digesting assistant in use for papermaking preparation method is as follows:
Deionized water is put into stirred tank, is warming up to 40 DEG C, adds water retention agent while stirring, be stirred to and dissolve completely, then add green oxygen, surfactant, poly (sodium aspartate) and potassium phosphate successively, dissolve completely.
Embodiment 2
Take the raw material of following weight portion:
The mixture of the alkyl glycoside of described surfactant to be mass ratio be 7:5:3, neopelex and Tea Saponin.
The mixture of the methylcellulose of described water retention agent to be mass ratio be 8:6:3, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.
Digesting assistant in use for papermaking preparation method is as follows:
Deionized water is put into stirred tank, is warming up to 55 DEG C, adds water retention agent while stirring, be stirred to and dissolve completely, then add green oxygen, surfactant, poly (sodium aspartate) and sodium phosphate successively, dissolve completely.
Embodiment 3
Take the raw material of following weight portion:
The mixture of the alkyl glycoside of described surfactant to be mass ratio be 6:4:2, neopelex and Tea Saponin.
The mixture of the methylcellulose of described water retention agent to be mass ratio be 7:5:2, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.
Digesting assistant in use for papermaking preparation method is as follows:
Deionized water is put into stirred tank, is warming up to 50 DEG C, adds water retention agent while stirring, be stirred to and dissolve completely, then add green oxygen, surfactant, poly (sodium aspartate) and potassium phosphate successively, dissolve completely.
Embodiment 4
Take the raw material of following weight portion:
The mixture of the alkyl glycoside of described surfactant to be mass ratio be 7:3:3, neopelex and Tea Saponin.
The mixture of the methylcellulose of described water retention agent to be mass ratio be 6:5:3, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.
Digesting assistant in use for papermaking preparation method is as follows:
Deionized water is put into stirred tank, is warming up to 45 DEG C, adds water retention agent while stirring, be stirred to and dissolve completely, then add green oxygen, surfactant, poly (sodium aspartate) and sodium phosphate successively, dissolve completely.
Embodiment 5
Take the raw material of following weight portion:
The mixture of the alkyl glycoside of described surfactant to be mass ratio be 6:4:1, neopelex and Tea Saponin.
Described water retention agent is mass ratio is 7:6: methylcellulose, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose mixture.
Digesting assistant in use for papermaking preparation method is as follows:
Deionized water is put into stirred tank, is warming up to 60 DEG C, adds water retention agent while stirring, be stirred to and dissolve completely, then add green oxygen, surfactant, poly (sodium aspartate) and potassium phosphate successively, dissolve completely.
Claims (4)
1. a digesting assistant in use for papermaking, is characterized in that, is made up of the raw material of following weight portion:
The mixture of the alkyl glycoside of described surfactant to be mass ratio be 5 ~ 7:3 ~ 5:3 ~ 1, neopelex and Tea Saponin;
Described phosphate is sodium phosphate or potassium phosphate;
The mixture of the methylcellulose of described water retention agent to be mass ratio be 6 ~ 8:4 ~ 6:3 ~ 1, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.
2. digesting assistant in use for papermaking according to claim 1, is characterized in that, is made up of the raw material of following weight portion:
3. digesting assistant in use for papermaking according to claim 1 and 2, is characterized in that: the mixture of the alkyl glycoside of described surfactant to be mass ratio be 6:4:2, neopelex and Tea Saponin.
4. digesting assistant in use for papermaking according to claim 1 and 2, is characterized in that: the mixture of the methylcellulose of described water retention agent to be mass ratio be 7:5:2, hydroxypropyl methylcellulose, hydroxyethylmethyl-cellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218169.9A CN104790243A (en) | 2015-04-30 | 2015-04-30 | Papermaking cooking assistant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218169.9A CN104790243A (en) | 2015-04-30 | 2015-04-30 | Papermaking cooking assistant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790243A true CN104790243A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510218169.9A Pending CN104790243A (en) | 2015-04-30 | 2015-04-30 | Papermaking cooking assistant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758453A (en) * | 2016-12-09 | 2017-05-31 | 苏州艾博迈尔新材料有限公司 | A kind of bamboo wood slurrying digesting assistant and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280466A (en) * | 2008-04-21 | 2008-10-08 | 山东海龙股份有限公司 | Hemp dissolving pulp for chemical fabrics and production method thereof |
| CN102154869A (en) * | 2010-12-28 | 2011-08-17 | 宜宾长毅浆粕有限责任公司 | Cooking aid for preparing chemical fiber pulp |
| CN102587180A (en) * | 2012-01-13 | 2012-07-18 | 大连工业大学 | Alkyl sulfonate cooking auxiliary agent |
-
2015
- 2015-04-30 CN CN201510218169.9A patent/CN104790243A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280466A (en) * | 2008-04-21 | 2008-10-08 | 山东海龙股份有限公司 | Hemp dissolving pulp for chemical fabrics and production method thereof |
| CN102154869A (en) * | 2010-12-28 | 2011-08-17 | 宜宾长毅浆粕有限责任公司 | Cooking aid for preparing chemical fiber pulp |
| CN102587180A (en) * | 2012-01-13 | 2012-07-18 | 大连工业大学 | Alkyl sulfonate cooking auxiliary agent |
Non-Patent Citations (1)
| Title |
|---|
| 廖文胜: "《洗涤剂原料及配方精选》", 31 March 2006 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758453A (en) * | 2016-12-09 | 2017-05-31 | 苏州艾博迈尔新材料有限公司 | A kind of bamboo wood slurrying digesting assistant and preparation method thereof |
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Application publication date: 20150722 |
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