CN1059946A - Technology for making paper pulp with pure tobacco stalk by imine method - Google Patents
Technology for making paper pulp with pure tobacco stalk by imine method Download PDFInfo
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- CN1059946A CN1059946A CN 91105353 CN91105353A CN1059946A CN 1059946 A CN1059946 A CN 1059946A CN 91105353 CN91105353 CN 91105353 CN 91105353 A CN91105353 A CN 91105353A CN 1059946 A CN1059946 A CN 1059946A
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- ammonium sulfite
- paper
- cigarette straw
- straw
- sulfite method
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Abstract
The invention discloses a kind of is raw material is produced high-strength technology package paper with the Ammonium Sulfite Method pulping by cooking process with full cigarette stalk.Adopting neutral Ammonium Sulfite Method in the cooking process and add magnesia in this process is buffer neutralizer.Cutting off the cigarette straw adopts the cutting tobacco device of special band rolling device and wind-force to carry sieve and dedusting delivery technology.Adopt the special tooth single disc refiner of band feeder to carry out a series of novel process meanses and corresponding production equipment such as defibrination in the defibrination operation.Producing the index of the high-strength technology package paper intensity of full cigarette straw paper pulp manufacturing above the spy of country corrugated paper by this law, also be better than every index of cotton stalk and Japan paper, is a kind of good paper pulp of producing the high strength industrial package paper.
Description
The invention belongs to the process of producing natural-color straw pulp with the full cigarette straw of ammonium sulfite cooking.
High-strength technology package paper is one of topmost packaging material on the our times.Each mainly produces the most employing of paper country production high strength industrial package paper raw material timber resources the world, and China's timber resources poorness, its fibre property of straw resources such as straw, wheat straw is relatively poor, can not satisfy the requirement of high strength industrial package paper paper pulp.
China is main in the world tobacco planting country, and abundant cigarette straw resource is arranged, and cigarette straw fiber is short slightly, and fibr tissue is better than cotton stalk, and marrow and epidermis account for total material about 12%, and special cigarette straw root fibr tissue is tight.Being better than broad-leaved wood is the good resource of making high strength industrial packing cigarette paper.The cigarette straw overwhelming majority passes into disuse at present, and exploitation cigarette straw pulping process newly has raw material sources for manufacturing high strength industrial package paper provides.From the seventies, China has begun the research of tobacco rod pulping and paper-making, adopts soda cooking tobacco rod (not comprising root) to produce bleached pulp.Because the soda processes unscreened yield is low, serious environmental is polluted when investing big cost height and production, and this technology fails to use in real industry.Pulping with ammonium sulfite method technology begins to be applied in China the slurrying of grass resources such as straw, wheat straw, reed grass in the seventies.Usually with general cultural paper of above-mentioned straw pulp production and ordinary packing paper.Domesticly disclose " imine method of using whole bamboo pulp manufacturing kraft box board " patent (No. 1 87102581A of patent), disclose " imine cotton fagot high-strength corrugated base paper pulping process and equipment " patent (patent No. 87101324A) on October 19th, 88 on November 18th, 87.Above-mentioned two patents are buffer with the imonium for the digestant chlorine water all.
The present invention seeks to have invented a kind of and be that raw material (comprising root) employing magnesia is that buffer relates to Ammonium Sulfite Method with full tobacco rod, make semi-chemical pulp, provide a kind of new papermaking sizing process method for producing the high strength industrial package paper at above-mentioned present situation.
Take following technical scheme for finishing above-mentioned purpose the present invention: at get the raw materials ready in the full tobacco rod pulping process, the key of boiling, defibrination, washing, each operation of pulling an oar proposes new process conditions and corresponding production equipment, to realize all processes of full tobacco rod pulp industry production process.In procedure for preparation, the shortcoming that the cigarette straw that adopt the cutting tobacco device of special band rolling device solve to use common chaffcutter to cause are too pulverized.Conveying is to adopt wind to send equipment to carry to guarantee that pure raw material enters digesting technoloy.At cooking process, in order to guarantee cigarette straw fiber quality, particularly cigarette straw root fiber is developed, it is during buffer neutralizer comes with alkalescent thing replacement strong basicity thing and slurries that the present invention adds with magnesia with neutral Ammonium Sulfite Method boiling.To soak device and give and soaking through giving in order to increase a dress pot amount tobacco rod.In the defibrination operation, rotary spherical digester spurts the single disc refiner that slurry adopts the special tooth of band feeder, and this single disc refiner is because its tooth type structures is special, guarantees not destroy the pulp fibres tissue in the defibrination process.Adopted special reciprocating gird equipment in the present invention of washing operation, with the slurry after washing through reciprocating gird impurity elimination thing.Adopt φ 450 double plates mill to replace beater commonly used to improve refining pulp quality greatly at pulping process.
Owing to adopt above technical scheme, reasonably select production equipment to produce the paper pulp that satisfies the high strength industrial package paper, every physical index of this paper pulp is as described in the following table:
From above-mentioned table as can be seen, the full cigarette straw slurry paper strength that adopts the present invention to produce surpasses the index of the spy of country fluting medium, also is better than every index of cotton bar and Japanese pattern, is a kind of good paper pulp of producing the high strength industrial package paper.
Figure of description is the embodiment process chart of technical solution of the present invention.
The technological process that the present invention adopts is as follows: get the raw materials ready-fragmentation-wind send dustproof-give and soaking-boiling-defibrination-washing-making beating.
Below in conjunction with embodiment the present invention being carried out detail describes:
1, procedure for preparation: more crisp based on the cigarette straw, cut off tobacco rod with general cutting tobacco device and have two problems.A cigarette straw are too pulverized, and L＜10mm reaches and is unfavorable for slurrying more than 10%, and the chaffcutter that b is common can't shred cigarette straw joints, cause the tight knot of digestion process can not slurrying.The present invention adopts the cutting tobacco device of special band rolling device, has solved the problems referred to above.In order to reduce the dust of unfavorable slurrying, foreign material such as dust and straw core, adopt wind-force conveying, sorting with and the delivery technology of dedusting guarantee that pure raw material enters digesting technoloy, present technique require to cigarette straw shearing length require for vertical be 30-120mm, be 10-15mm laterally, do not save for the cigarette straw.2, digesting technoloy: by the blower tool cigarette straw wind is delivered to and to be soaked device and give and soaking,, also be beneficial to soup simultaneously and evenly absorb to increase dress pot amount.The digesting technoloy parameter is as follows:
Rotary spherical digester: 14m
3, ball load: 0.12-0.13t/m
2(in over dry)
Imonium consumption: 10-11%(is in 100% imonium)
Magnesia consumption: 4-5%(is in 100% magnesia)
Liquor ratio: 1: 3
Liquid PH value: initial p H=9-10
Phase PH=7-7.2 not
80 ℃ of water temperatures
Boiling maximum pressure and temperature: 0.7-0.75MPa
165℃-170℃
The omnidistance time of boiling: 4 hours 40 minutes
Boiling curve:
Rotary spherical digester dry run OMPa
b(20 minutes)-intensification OMPa-0.4MPa(1 hour)-little steam bleeding 0.4MPa-0.1MPa(20 minute)-intensification 0.1MPa-0.7-0.75MPa
(30 minutes)-insulation 2.5 hours)-spurt
Thick starch degree 70-75KaPPa
Unscreened yield 65-70%
Cigarette straw fiber content is based on root, take second place in the bottom, top content is minimum, adopted the soda cooking heavy losses in the past fibr tissue greatly reduce unscreened yield and fibre property, the present invention is with neutral Ammonium Sulfite Method boiling, adding with magnesia is buffer, with this special process process of slurries, has guaranteed cigarette straw fiber quality in coming with alkalescent thing replacement strong basicity thing.Particularly cigarette straw root fiber is developed, improved the physicochemical property of cigarette straw slurries.
3, defibrination operation: the slurry that rotary spherical digester spurts adopts the single disc refiner (φ 650) of the special tooth of band feeder to carry out defibrination, because its tooth type structures is special, guarantee in the defibrination process, not destroy the pulp fibres tissue, 4-5 minute defibrination time, can not 20-23 ° of SR of defibrination overlong time beating degree.
4, washing operation: the slurry after the corase grind is through side compression type wash engine or horizontal belt vacuum pulp washing machine (effect than side pressure for well) washing, it is 2.2-3.0% that wash engine advances to starch concentration, pulp concentration 14-16% washes disposed slurry through reciprocating gird sieve impurity elimination thing, and reciprocating gird is a special equipment.
5, pulping process: substitute beater commonly used with φ 450 double plates mill, advance to starch concentration 3.2-4.0%, pulp concentration 2.7-3.0%, the pulping beating degree is 28-30 ° of SR.Pulping PH=5-5.5.
Claims (5)
1, the full cigarette straw of a kind of Ammonium Sulfite Method pulping process method comprises procedure for preparation, cooking process, defibrination operation, washing operation, and pulping process is characterized in that raw material is that full cigarette straw (comprising root) adopt neutral Ammonium Sulfite Method boiling in cooking process.
2, the full cigarette straw of Ammonium Sulfite Method as claimed in claim 1 pulping process method, it is characterized in that in the cooking process adopting neutral Ammonium Sulfite Method boiling and in addition magnesia be buffer neutralizer.
3, the full cigarette straw of Ammonium Sulfite Method as claimed in claim 1 pulping process method is characterized in that cutting off in the procedure for preparation cutting tobacco device that the cigarette straw adopt special band rolling device.Carry and adopt wind-force to carry sieve and dedusting conveying equipment technology.
4, the full cigarette straw of Ammonium Sulfite Method as claimed in claim 1 pulping process method is characterized in that the slurry that rotary spherical digester spurts in the defibrination operation adopts the special tooth single disc refiner of band feeder to carry out defibrination.
5, the full cigarette straw of Ammonium Sulfite Method as claimed in claim 1 pulping process method is characterized in that washing in the washing operation disposed slurry through special equipment reciprocating gird sieve impurity elimination thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105353 CN1059946A (en) | 1991-07-30 | 1991-07-30 | Technology for making paper pulp with pure tobacco stalk by imine method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105353 CN1059946A (en) | 1991-07-30 | 1991-07-30 | Technology for making paper pulp with pure tobacco stalk by imine method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1059946A true CN1059946A (en) | 1992-04-01 |
Family
ID=4907100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91105353 Pending CN1059946A (en) | 1991-07-30 | 1991-07-30 | Technology for making paper pulp with pure tobacco stalk by imine method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059946A (en) |
-
1991
- 1991-07-30 CN CN 91105353 patent/CN1059946A/en active Pending
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