CN106638078B - A kind of production method with fire resistance characteristic paper pulp - Google Patents
A kind of production method with fire resistance characteristic paper pulp Download PDFInfo
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- CN106638078B CN106638078B CN201611121315.7A CN201611121315A CN106638078B CN 106638078 B CN106638078 B CN 106638078B CN 201611121315 A CN201611121315 A CN 201611121315A CN 106638078 B CN106638078 B CN 106638078B
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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
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/08—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags
-
- 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
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C7/00—Digesters
-
- 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
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of production methods with fire resistance characteristic paper pulp, belong to pulp production technology field, include the following steps：Raw material selection, extruding, immersion, cooking disinfection, except impurity, be made paper pulp semi-finished product, be made wet base, be made ground paper, be made paper pulp finished product, water resistance test.The present invention, which adopts new technology, makes waterproof paper pulp, it can be to avoid when processing carton, it is again to increase by a procedure more, but it is directly added in paper pulp process comprising 921 cationic starch of compound moisture-proof adhesive and YF, form waterproof paper pulp, outgoing is coated with waterproof layer during being not required to stop at manufacture carton, has not only saved process simple, but also reduce cost；Paper pulp produced by the invention is coated with waterproof coating without outgoing, need to only manufacture the waterproof paper pulp of required model specification, can make corresponding waterproof carton according to demand；Effectively raise paper pulp waterproof ability.
Description
Technical field
The present invention relates to a kind of production methods of paper pulp, more particularly to a kind of producer with fire resistance characteristic paper pulp
Method belongs to pulp production technology field.
Background technology
Paper pulp be using plant fiber as raw material, can be according to processing method through fibrous material made from different processing methods
It is divided into mechanical pulp, chemical pulp and chemimechanical pulp, also can be divided into wood pulp, straw pulp, jute pulp, reed according to fibrous raw material used
Slurry, sugarcane slurry, bamboo pulp, rag stock etc., and refined pulp, bleached pulp, unbleached pulp, high yield pulp1 can be divided into according to different purity
Paper pulp, semi-chemical pulp etc.；Generally it is chiefly used in manufacturing paper and cardboard, refined pulp is also usually made in addition to for manufacturing speciality paper
For the raw material of the cellulose derivatives such as manufacture cellulose esters, cellulose ether, it is additionally operable to staple fibre, plastics, coating, film, fire
The fields such as medicine.
Traditional slurrying refers to the method combined using chemical method, mechanical means or both, and plant fiber material is made to dissociate
Become true qualities or the production process of bleached pulp, the technical process of generally use is by plant fiber material crushing, boiling, washes
It washs, screen, bleach, purify, dry.Modern new development goes out a kind of bio-pulping method, first decomposes wood with special strain special orientation
Plain structure, after be aided with and mechanically or chemically dissociate remaining cellulose, then bleached, during this, biology has divided
Solution opens most of lignin, and chemical method is intended only as booster action, and chemical products used is seldom compared with conventional method, because
This can accomplish few discharge or not discharge waste liquid, be a kind of environment-friendly pulping, free pulping method.
Currently, paper pulp, during the manufacturing, body paper outgoing need to be coated with waterproof material by such mode of production, then row is cut out
It cuts, laminated with single corrugated paper, technological process is more lengthy and tedious, and the degree of automation is low.Therefore, waterproof paper pulp high efficiency, low how is realized
The high-volume mechanization linkage production of cost is technical problem urgently to be resolved hurrily in the industry.
Invention content
The main object of the present invention is that technological process present in current pulp production is lengthy and tedious, automates in order to solve
The problems such as degree is low provides a kind of production method with fire resistance characteristic paper pulp.
The purpose of the present invention can reach by using following technical solution：
A kind of production method with fire resistance characteristic paper pulp, described method includes following steps：
Step S1：Raw material selects
The waste paper of raw material selection recycling, and the waste paper of recycling is shredded；
Step S2：It squeezes, impregnate
The waste paper shredded is put into extruder, or the waste paper shredded is rolled into shredded paper；It is useless after squeezing or roll
Paper is put into fermentation vat, and water is added to stir evenly, and shredded paper is made to stop in the pasty state；
Step S3：Cooking disinfection removes impurity
Shredded paper at paste after immersion is put into digester and is steamed under certain cooking pressure, boiling temperature, digestion time
It boils, is removed impurity by mechanical equipment after boiling；
Step S4：Paper pulp semi-finished product are made
Choose compound moisture-proof adhesive, YF-921 cationic starches, auxiliary dispersants, over dry mineral composition fiber, retention
Agent, delignified pulp aqua, mould inhibitor, mothproofing agent, fungicide are mixed, after mixing with after boiling and remove deimpurity paste shredded paper
Mixing, obtains mixture, mixture stirs into paper pulp by turbine type beater, obtains paper pulp semi-finished product；
Step S5：Wet base is made
Obtained paper pulp semi-finished product are dehydrated, dewatered paper pulp semi-finished product are extracted into molding machine and are molded, are molded
After shift, obtain wet base；
Step S6：Ground paper is made
Obtained wet base is sent to hot press hot pressing, hot press is pressurizeed, heated, added lines, vacuumizes, hot press
It is blown by gas blow pipe after hot pressing is good, blows afloat to obtain molding ground paper；
Step S7：Paper pulp finished product is made
Obtained molding ground paper is dried, product examine, packing, obtain paper pulp finished product；
Step S8：Water resistance is tested
Water resistance test is carried out to obtained paper pulp finished product, water resistance test includes：Water penetration test, rub resistance are surveyed
Examination, constant temperature and humidity test.
Further, in the step S1, it is 0.1cm ~ 0.3cm that waste paper, which is shredded into size,.
Further, in the step S2, the waste paper shredded is put into extruder, is squeezed 3 ~ 5 times, or is useless by what is shredded
Paper is rolled into the shredded paper that thickness is 0.5mm ~ 1.5mm；Waste paper after squeezing or rolling is put into fermentation vat, addition accounts for waste paper weight
0.05% ~ 0.1% biological enzyme, adds water to stir evenly, and impregnates, and water temperature is 30 DEG C ~ 45 DEG C, and shredded paper is made to stop in the pasty state.
Further, in the step S3, the shredded paper at paste after immersion is put into boiling in digester, the pressure of boiling
For：The temperature of 0.03MPa ~ 0.05MPa, boiling is：75 DEG C ~ 85 DEG C, the time of boiling is：30min~40 min.
Further, in the step S3, liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate and again are added in the digester
Calcium, liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate, coarse whiting are matched in the ratio for generating sulfurous acid inorganic double salt.
Further, in the step S3, the liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate, coarse whiting proportioning generate sulfurous acid
Inorganic double salt Mg (NH4)2(SO3)2Cooking liquor, cooking liquor phosphoric acid and urea adjust pH, obtain the quality of inorganic double salt containing sulfurous acid
The cooking liquor of a concentration of 70~80g/L, cooking liquor pH in digestion process are controlled 7~8.
Further, in the step S4, compound moisture-proof adhesive, YF-921 sun are added by following weight in paper pulp per ton
Ionic starch, auxiliary dispersants, over dry mineral composition fiber, retention agent, delignified pulp aqua, mould inhibitor, mothproofing agent, fungicide,
Compound moisture-proof adhesive dosage is 60kg~70kg, and YF-921 cationic starch dosages are 45kg~55kg, and auxiliary dispersants are used
Amount is 5.5kg~6.5kg, and over dry mineral composition fiber dosage is 0.5kg~1.0kg, and retention agent dosage is 0 .15kg~0
.20kg, delignified pulp aqua 1.0kg~2.0kg, mould inhibitor, mothproofing agent and fungicide amount to 1.0kg~2.0kg.
Further, in the step S4, the retention agent is for increasing fiber fines, filler and pigment staying in paper
Rate, the retention agent is by polyacrylamide, polyethylene glycol, phenolic resin, acrylic acid, (NH4)2S2O8、PbSO4Composition；It is described
Auxiliary dispersants are for promoting fiber, filler to be uniformly dispersed in paper pulp, and the auxiliary dispersants are by cellulose, polymer, mistake
Hydrogen oxide forms.
Further, in the step S4, the delignified pulp aqua is for promoting paper pulp to be easy to be dehydrated, the dewatering of pulp
Agent is made of polyacrylamide, sodium hypochlorite, KOH, hydrochloric acid and water；The mould inhibitor, mothproofing agent, fungicide are for preventing paper pulp
It is not mouldy, not putrid and deteriorated, do not damaged by worms, the mould inhibitor is made of butyl hydroxybenzoate, citric acid, phenol, the mothproofing agent
It is made of pyrethrins, sulphur, the fungicide is made of formaldehyde, hypochlorous acid.
The advantageous effects of the present invention：The production method with fire resistance characteristic paper pulp of the present invention, the system of adopting new technology
Make waterproof paper pulp, can to avoid when processing carton, then increase by a procedure, but be directly added in paper pulp process
Include compound moisture-proof adhesive and YF-921 cationic starches, form waterproof paper pulp, is not required to stop at during manufacture carton
Outgoing is coated with waterproof layer, has not only saved process simple, but also reduces cost；Paper pulp produced by the invention is applied without outgoing coating waterproof
Layer need to only manufacture the waterproof paper pulp of required model specification, can make corresponding waterproof carton according to demand；Effectively raise paper
Starch waterproof ability.
Description of the drawings
Fig. 1 is the schematic diagram of a preferred embodiment of the production method for having fire resistance characteristic paper pulp according to the present invention.
Specific implementation mode
To make the more clear and clear technical scheme of the present invention of those skilled in the art, with reference to embodiment and attached drawing
The present invention is described in further detail, and embodiments of the present invention are not limited thereto.
As shown in Figure 1, a kind of production method with fire resistance characteristic paper pulp provided in this embodiment, the method includes such as
Lower step：
Step S1：Raw material selects
The waste paper of raw material selection recycling, and the waste paper of recycling is shredded；
Step S2：It squeezes, impregnate
The waste paper shredded is put into extruder, or the waste paper shredded is rolled into shredded paper；It is useless after squeezing or roll
Paper is put into fermentation vat, and water is added to stir evenly, and shredded paper is made to stop in the pasty state；
Step S3：Cooking disinfection removes impurity
Shredded paper at paste after immersion is put into digester and is steamed under certain cooking pressure, boiling temperature, digestion time
It boils, is removed impurity by mechanical equipment after boiling；
Step S4：Paper pulp semi-finished product are made
Choose compound moisture-proof adhesive, YF-921 cationic starches, auxiliary dispersants, over dry mineral composition fiber, retention
Agent, delignified pulp aqua, mould inhibitor, mothproofing agent, fungicide are mixed, after mixing with after boiling and remove deimpurity paste shredded paper
Mixing, obtains mixture, mixture stirs into paper pulp by turbine type beater, obtains paper pulp semi-finished product；
Step S5：Wet base is made
Obtained paper pulp semi-finished product are dehydrated, dewatered paper pulp semi-finished product are extracted into molding machine and are molded, are molded
After shift, obtain wet base；
Step S6：Ground paper is made
Obtained wet base is sent to hot press hot pressing, hot press is pressurizeed, heated, added lines, vacuumizes, hot press
It is blown by gas blow pipe after hot pressing is good, blows afloat to obtain molding ground paper；
Step S7：Paper pulp finished product is made
Obtained molding ground paper is dried, product examine, packing, obtain paper pulp finished product；
Step S8：Water resistance is tested
Water resistance test is carried out to obtained paper pulp finished product, water resistance test includes：Water penetration test, rub resistance are surveyed
Examination, constant temperature and humidity test.
Further, in the present embodiment, in the step S1, it is 0.2cm that waste paper, which is shredded into size,.
Further, in the present embodiment, in the step S2, the waste paper shredded is put into extruder, is squeezed 4 times,
Or the waste paper shredded is rolled into the shredded paper that thickness is 1.0mm；Waste paper after squeezing or rolling is put into fermentation vat, addition accounts for useless
The biological enzyme of paper weight 0.1%, adds water to stir evenly, and impregnates, and water temperature is 40 DEG C, and shredded paper is made to stop in the pasty state.
Further, in the present embodiment, in the step S3, the shredded paper at paste after immersion is put into digester and is steamed
It boils, the pressure of boiling is：The temperature of 0.04MPa, boiling is：80 DEG C, the time of boiling is：35min.
Further, in the present embodiment, in the step S3, liquefied ammonia, ammonium bicarbonate, oxidation are added in the digester
Magnesium, potassium sulfate and coarse whiting, liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate, coarse whiting are matched in the ratio for generating sulfurous acid inorganic double salt
Than.
Further, in the present embodiment, in the step S3, the liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate, coarse whiting are matched
Than generating sulfurous acid inorganic double salt Mg (NH4)2(SO3)2Cooking liquor, cooking liquor phosphoric acid and urea adjust pH, obtain containing sulfurous acid
Inorganic double salt mass concentration is the cooking liquor of 75g/L, and cooking liquor pH in digestion process is controlled 7.5.
Further, in the present embodiment, in the step S4, compound moisture-proof glue is added by following weight in paper pulp per ton
Glutinous agent, auxiliary dispersants, over dry mineral composition fiber, retention agent, delignified pulp aqua, mould inhibitor, is prevented YF-921 cationic starches
Agent, fungicide are eaten into, compound moisture-proof adhesive dosage is 65kg, and YF-921 cationic starch dosages are 50kg, and auxiliary dispersants are used
Amount is 6kg, and over dry mineral composition fiber dosage is 0.8kg, and retention agent dosage is 0 .18kg, delignified pulp aqua 1.5kg, mould proof
Agent, mothproofing agent and fungicide amount to 1.5kg.
Further, in the present embodiment, in the step S4, the retention agent for increase fiber fines, filler and
Retention of the pigment in paper, the retention agent is by polyacrylamide, polyethylene glycol, phenolic resin, acrylic acid, (NH4)2S2O8、
PbSO4Composition；The auxiliary dispersants are for promoting fiber, filler to be uniformly dispersed in paper pulp, and the auxiliary dispersants are by fibre
Tie up element, polymer, hydrogen peroxide composition.
Further, in the present embodiment, in the step S4, the delignified pulp aqua is for promoting paper pulp to be easy to de-
Water, the delignified pulp aqua are made of polyacrylamide, sodium hypochlorite, KOH, hydrochloric acid and water；The mould inhibitor, kills at mothproofing agent
Microbial inoculum for prevent paper pulp it is not mouldy, it is not putrid and deteriorated, do not damaged by worms, the mould inhibitor is by butyl hydroxybenzoate, citric acid, phenol
Composition, the mothproofing agent are made of pyrethrins, sulphur, and the fungicide is made of formaldehyde, hypochlorous acid.
The carton that paper pulp is made obtained from production method by using the present embodiment paper pulp is tested, is surveyed
Examination is qualified, impermeable, can accomplish 100% environmental requirement.
The key technical indexes for making waterproof carton is as shown in table 1.
1 the key technical indexes of table
In conclusion the production method provided in this embodiment with fire resistance characteristic paper pulp, adopts new technology and makes waterproof
Paper pulp, can to avoid when processing carton, then increase by a procedure, but directly added in paper pulp process and include
Compound moisture-proof adhesive and YF-921 cationic starches form waterproof paper pulp, and outgoing applies during being not required to stop at manufacture carton
Cloth waterproof layer, has not only saved process simple, but also reduces cost；Paper pulp produced by the invention is coated with waterproof coating without outgoing, only needs
The waterproof paper pulp of required model specification is manufactured, corresponding waterproof carton can be made according to demand；Effectively raise paper pulp waterproof
Ability.
The above, the only preferred embodiment of the invention, but scope of protection of the present invention is not limited thereto, it is any ripe
Know those skilled in the art within the scope of the present disclosure, according to the technique and scheme of the present invention and its design is subject to
Equivalent substitution or change belongs to protection scope of the present invention.
Claims (7)
1. a kind of production method with fire resistance characteristic paper pulp, it is characterised in that：Described method includes following steps：
Step S1：Raw material selects
The waste paper of raw material selection recycling, and the waste paper of recycling is shredded；
Step S2：It squeezes, impregnate
The waste paper shredded is put into extruder, or the waste paper shredded is rolled into shredded paper；Waste paper after squeezing or rolling is put
Enter fermentation vat, water is added to stir evenly, shredded paper is made to stop in the pasty state；
Step S3：Cooking disinfection removes impurity
Shredded paper at paste after immersion is put into digester the boiling under certain cooking pressure, boiling temperature, digestion time, is steamed
Impurity is removed by mechanical equipment after boiling；
Step S4：Paper pulp semi-finished product are made
Choose compound moisture-proof adhesive, YF-921 cationic starches, auxiliary dispersants, over dry mineral composition fiber, retention agent, paper
Slurry dehydrating agent, mould inhibitor, mothproofing agent, fungicide are mixed, after mixing with after boiling and deimpurity paste shredded paper is gone to mix,
Mixture is obtained, mixture stirs into paper pulp by turbine type beater, obtains paper pulp semi-finished product；
Step S5：Wet base is made
Obtained paper pulp semi-finished product are dehydrated, dewatered paper pulp semi-finished product are extracted into molding machine and are molded, are turned after molding
It moves, obtains wet base；
Step S6：Ground paper is made
Obtained wet base is sent to hot press hot pressing, hot press is pressurizeed, heated, added lines, vacuumizes, hot press hot pressing
It is blown by gas blow pipe after good, blows afloat to obtain molding ground paper；
Step S7：Paper pulp finished product is made
Obtained molding ground paper is dried, product examine, packing, obtain paper pulp finished product；
Step S8：Water resistance is tested
Water resistance test is carried out to obtained paper pulp finished product, water resistance test includes：Water penetration is tested, rub resistance is tested,
Constant temperature and humidity is tested；
In the step S1, it is 0.1cm~0.3cm that waste paper, which is shredded into size,；In the step S2, the waste paper shredded is put into
It in extruder, squeezes 3 ~ 5 times, or the waste paper shredded is rolled into the shredded paper that thickness is 0.5mm ~ 1.5mm；After squeezing or rolling
Waste paper be put into fermentation vat, the biological enzyme for accounting for waste paper weight 0.05% ~ 0.1% is added, water is added to stir evenly, impregnates, water temperature is
30 DEG C ~ 45 DEG C, shredded paper is made to stop in the pasty state.
2. a kind of production method with fire resistance characteristic paper pulp according to claim 1, it is characterised in that：The step S3
In, the shredded paper at paste after immersion is put into boiling in digester, the pressure of boiling is：0.03MPa ~ 0.05MPa, the temperature of boiling
Degree is：75 DEG C ~ 85 DEG C, the time of boiling is：30min~40 min.
3. a kind of production method with fire resistance characteristic paper pulp according to claim 1, it is characterised in that：The step S3
In, add liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate and coarse whiting in the digester, liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate, again
Calcium is matched in the ratio for generating sulfurous acid inorganic double salt.
4. a kind of production method with fire resistance characteristic paper pulp according to claim 3, it is characterised in that：The step S3
In, the liquefied ammonia, ammonium bicarbonate, magnesia, potassium sulfate, coarse whiting proportioning generate sulfurous acid inorganic double salt Mg (NH4)2(SO3)2Cooking liquor,
Cooking liquor phosphoric acid and urea adjust pH, obtain the cooking liquor that the mass concentration of inorganic double salt containing sulfurous acid is 70~80g/L, boiling
Liquid pH in digestion process is controlled 7~8.
5. a kind of production method with fire resistance characteristic paper pulp according to claim 1, it is characterised in that：The step S4
In, in paper pulp per ton compound moisture-proof adhesive, YF-921 cationic starches, auxiliary dispersants, over dry mine are added by following weight
Object composite fibre, retention agent, delignified pulp aqua, mould inhibitor, mothproofing agent, fungicide, compound moisture-proof adhesive dosage be 60kg~
70kg, YF-921 cationic starch dosage are 45kg~55kg, and auxiliary dispersants dosage is 5.5kg~6.5kg, and over dry mineral are multiple
Condensating fiber dosage be 0.5kg~1.0kg, retention agent dosage be the .20kg of 0 .15kg~0, delignified pulp aqua 1.0kg~2.0kg,
Mould inhibitor, mothproofing agent and fungicide amount to 1.0kg~2.0kg.
6. a kind of production method with fire resistance characteristic paper pulp according to claim 1, it is characterised in that：The step S4
In, the retention agent is for increasing the retention of fiber fines, filler and pigment in paper, and the retention agent is by polyacrylamide
Amine, polyethylene glycol, phenolic resin, acrylic acid, (NH4)2S2O8、PbSO4Composition；The auxiliary dispersants are for promoting fiber, filling out
Material is uniformly dispersed in paper pulp, and the auxiliary dispersants are made of cellulose, polymer, hydrogen peroxide.
7. a kind of production method with fire resistance characteristic paper pulp according to claim 1, it is characterised in that：The step S4
In, the delignified pulp aqua for promoting paper pulp to be easy to be dehydrated, the delignified pulp aqua by polyacrylamide, sodium hypochlorite,
KOH, hydrochloric acid and water composition；The mould inhibitor, mothproofing agent, fungicide for prevent paper pulp it is not mouldy, it is not putrid and deteriorated, not by worm
Moth, the mould inhibitor are made of butyl hydroxybenzoate, citric acid, phenol, and the mothproofing agent is made of pyrethrins, sulphur, described
Fungicide is made of formaldehyde, hypochlorous acid.
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