CN108611896A - Using paper grade (stock) slurry made of wood, bamboo raw material - Google Patents

Using paper grade (stock) slurry made of wood, bamboo raw material Download PDF

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Publication number
CN108611896A
CN108611896A CN201810453528.2A CN201810453528A CN108611896A CN 108611896 A CN108611896 A CN 108611896A CN 201810453528 A CN201810453528 A CN 201810453528A CN 108611896 A CN108611896 A CN 108611896A
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digester
liquor
wood
waste liquid
black
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CN201810453528.2A
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不公告发明人
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    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/10—Concentrating spent liquor by evaporation
    • 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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • 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
    • 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
    • D21C3/006—Pulping cellulose-containing materials with compounds not otherwise provided for
    • 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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/024—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes with NH3 or H2O
    • 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
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes
    • 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
    • D21C3/22—Other features of pulping processes
    • D21C3/226—Use of compounds avoiding scale formation
    • 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
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • D21C3/266—Multistage processes the same pulping agent being used in all stages
    • 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
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse

Abstract

The invention discloses using paper grade (stock) slurry made of wood, bamboo raw material, include the following steps：Wood, bamboo wood material are processed into a section shape and be put into digester, lye, additive and water is added, it is spare to obtain mixture；Black liquor and white liquor are added in mixture, heating is impregnated；It after black liquor and white liquor are mixed heating, is added in digester, while the waste liquid in digester being cemented out, after the completion of displacement, keeps the temperature boiling；Continue black liquor and white liquor mixing heating, repeat the above steps；Slurry and waste liquid that boiling is completed are detached, washs, are dehydrated, sieve to obtain the final product.A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed by the present invention; easy to operate, conditions of cooking is mildly, controllably; advantage high with boiling heat utilization rate, reducing heat energy loss; its digester cycle is short, production efficiency is high; waste liquid discharging amount is small; environment is protected, the wasting of resources is avoided, is worthy to be popularized.

Description

Using paper grade (stock) slurry made of wood, bamboo raw material
Technical field
The present invention relates to pulp and paper technology fields, more particularly to using paper grade (stock) slurry made of wood, bamboo raw material.
Background technology
Paper is a great invention of Ancient Times in China, and the basis of material technology is provided to the prosperity of ancient Chinese culture, The appearance of paper is the life of the mankind, learns to bring great convenience.Paper is for the sheets such as writing, printing, paint or pack The general name of fibre.Modern papermaking process such as generally can be divided into slurrying, modulate, manufacture paper with pulp, processing at the key steps.Wherein, it makes Slurry process is the process for converting wood into paper pulp.With the rapid development of paper industry, the raw materials used timber resources of papermaking is short It lacks, China's paper industry is caused bottleneck occur.Therefore, many advanced researchers begin one's study and develop non-wood pulp.By It is occupied first of the world in the annual output of China's bamboo resource, bamboo, and most of bamboo pulping Papermaking Performances are excellent, close to wealthy Ye Cai, bamboo wood pulping and paper-making slowly grow up, however bamboo institutional framework is close, and medicinal liquid osmosis is difficult, traditional bamboo In digesting technoloy, pulp washing black liquor directly send evaporation, is easy to happen silicon obstacle and calcium fouling, long, production effect that there are digester cycles The problems such as rate is low, seriously polluted.In recent years, batch cooking technique is constantly progressive, and enters Rapid development stage, however it is still The problems such as there are complex process, operating condition height, boiling energy consumptions seriously, disposal of pollutants is not up to standard, the utilization of resources is insufficient.In order to Adapt to country advocate green, environmental protection, low-carbon production theory, the present invention propose it is a kind of wood, bamboo raw material energy conservation and environmental protection displacement Digesting technoloy.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of wood, the bamboo raw material that propose are energy saving Environmentally friendly replacing and digesting technoloy.
A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy, includes the following steps：
S1, the section shape of wood, 2~4cm of bamboo wood material processing growth, wide 2~4cm, high 2~4cm are put into digester, alkali is added Liquid, additive and water, are stirred 15~25h, and it is spare to obtain mixture；
S2, in mass ratio 0.2~0.4:0.5~0.7:1~1.2, black liquor and white liquor are added to the mixing of gained in step S1 In material, 80~100 DEG C are warming up to, impregnates 30~50min；
S3, black liquor and white liquor mixing are warming up to 128~142 DEG C, black, white liquor the mixed liquor after will heat up using heat exchanger is added Enter into the digester in step S1, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation boiling 30~ 50min；
S4, black liquor and white liquor mixing are warming up to 155~170 DEG C, black, white liquor the mixed liquor after will heat up using heat exchanger is added Enter into the digester in step S2, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation boiling 70~ 90min；
S5, by step S4 slurry and waste liquid detach, successively with 80~90 DEG C of hot water and 15~25 DEG C of warm water into Row washing, after being then dehydrated with centrifuge, is sieved to obtain the final product.
Preferably, the mass percent of each raw material is in the step S1：Lye 15~25%, additive 0.01~ 0.05%, water 10~30%, surplus are wood, bamboo wood material.
Preferably, the mass percent of each raw material is in the step S1：Lye 20%, additive 0.03%, water 20%, Surplus is wood, bamboo wood material.
Preferably, in the step S1 additive refer in anthraquinone, dihydro dihydroxy-anthracene disodium salt and quinone one in.
Preferably, black liquor and the mass ratio of white liquor are 0.8~1.2 in the step S3 and S4:2~2.5.
Preferably, screening refers specifically to be sieved using the sieve that mesh number is 500~750 mesh in the step S5.
A kind of wood proposed by the present invention, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy, easy to operate, conditions of cooking is mild, Controllably, advantage high with boiling heat utilization rate, reducing heat energy loss, in digesting technoloy the use of additive effectively improve Medicinal liquid osmosis rate, accelerates reaction speed, improves boiling efficiency, and fresh black liquor is replaced pulp washing black liquor using heat exchanger, Silicon obstacle and calcium fouling effectively are avoided, digester cycle is short, production efficiency is high, and the waste liquid of displacement is repeatable to be utilized, effectively Reduce waste liquid discharging amount, protect environment, avoid the wasting of resources, pulp strength obtained by boiling is high, good combination property, It is worthy to be popularized.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
Embodiment one
A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed by the present invention, includes the following steps：
The section shape of S1, wood, the processing of bamboo wood material are grown up 3cm, width 2cm, high 4cm, by mass percentage, by lye 22%, dihydro Dihydroxy-anthracene disodium salt 0.04%, the wood of water 15% and surplus, bamboo wood material are put into digester, are stirred 22h, are obtained mixture It is spare；
S2, in mass ratio 0.4:0.5:1, black liquor and white liquor are added in step S1 in the mixture of gained, are warming up to 85 DEG C, Impregnate 35min；
S3, in mass ratio 0.9:2.5, black liquor and white liquor are mixed and are warming up to 130 DEG C, it is black, white after will heat up using heat exchanger The mixed liquor of liquid is added in the digester in step S1, while the waste liquid in digester being cemented out, and after the completion of displacement, protects Warm boiling 45min；
S4, in mass ratio 0.9:2.5, black liquor and white liquor are mixed and are warming up to 160 DEG C, it is black, white after will heat up using heat exchanger The mixed liquor of liquid is added in the digester in step S2, while the waste liquid in digester being cemented out, and after the completion of displacement, protects Warm boiling 75min；
S5, by step S4 slurry and waste liquid detach, washed successively with 88 DEG C of hot water and 18 DEG C of warm water, so It is sieved after being dehydrated afterwards with centrifuge, using the sieve that mesh number is 600 mesh.
Embodiment two
A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed by the present invention, includes the following steps：
The section shape of S1, wood, the processing of bamboo wood material are grown up 2cm, width 4cm, high 3cm, by mass percentage, by lye 15%, anthraquinone 0.01%, water 20% and the wood of surplus, bamboo wood material are put into digester, are stirred 18h, it is spare to obtain mixture；
S2, in mass ratio 0.2:0.5:1.2, black liquor and white liquor are added in step S1 in the mixture of gained, are warming up to 100 DEG C, impregnate 45min；
S3, in mass ratio 0.8:2.1, black liquor and white liquor are mixed and are warming up to 140 DEG C, it is black, white after will heat up using heat exchanger The mixed liquor of liquid is added in the digester in step S1, while the waste liquid in digester being cemented out, and after the completion of displacement, protects Warm boiling 30min；
S4, in mass ratio 0.8:2.1, black liquor and white liquor are mixed and are warming up to 165 DEG C, it is black, white after will heat up using heat exchanger The mixed liquor of liquid is added in the digester in step S2, while the waste liquid in digester being cemented out, and after the completion of displacement, protects Warm boiling 90min；
S5, by step S4 slurry and waste liquid detach, washed successively with 82 DEG C of hot water and 25 DEG C of warm water, so It is sieved after being dehydrated afterwards with centrifuge, using the sieve that mesh number is 700 mesh.
Embodiment three
A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed by the present invention, includes the following steps：
The section shape of S1, wood, the processing of bamboo wood material are grown up 4cm, width 2cm, high 3cm, by mass percentage, by lye 20%, anthraquinone 0.02%, water 10% and the wood of surplus, bamboo wood material are put into digester, are stirred 15h, it is spare to obtain mixture；
S2, in mass ratio 0.3:0.6:1, black liquor and white liquor are added in step S1 in the mixture of gained, are warming up to 90 DEG C, Impregnate 30min；
S3, in mass ratio 1.2:2.3, black liquor and white liquor are mixed and are warming up to 128 DEG C, it is black, white after will heat up using heat exchanger The mixed liquor of liquid is added in the digester in step S1, while the waste liquid in digester being cemented out, and after the completion of displacement, protects Warm boiling 35min；
S4, in mass ratio 1.2:2.3, black liquor and white liquor are mixed and are warming up to 155 DEG C, it is black, white after will heat up using heat exchanger The mixed liquor of liquid is added in the digester in step S2, while the waste liquid in digester being cemented out, and after the completion of displacement, protects Warm boiling 85min；
S5, by step S4 slurry and waste liquid detach, washed successively with 90 DEG C of hot water and 22 DEG C of warm water, so It is sieved after being dehydrated afterwards with centrifuge, using the sieve that mesh number is 750 mesh.
Example IV
A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed by the present invention, includes the following steps：
The section shape of S1, wood, the processing of bamboo wood material are grown up 4cm, width 3cm, high 2cm, by mass percentage, by lye 25%, quinone 0.05%, water 30% and the wood of surplus, bamboo wood material are put into digester, are stirred 25h, it is spare to obtain mixture；
S2, in mass ratio 0.4:0.7:1.1, black liquor and white liquor are added in step S1 in the mixture of gained, are warming up to 80 DEG C, impregnate 50min；
S3, in mass ratio 1:2.4, black liquor and white liquor are mixed and are warming up to 142 DEG C, black, white liquor after will heat up using heat exchanger Mixed liquor be added in the digester in step S1, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation Boiling 50min；
S4, in mass ratio 1:2.4, black liquor and white liquor are mixed and are warming up to 170 DEG C, black, white liquor after will heat up using heat exchanger Mixed liquor be added in the digester in step S2, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation Boiling 70min；
S5, by step S4 slurry and waste liquid detach, washed successively with 85 DEG C of hot water and 15 DEG C of warm water, so It is sieved after being dehydrated afterwards with centrifuge, using the sieve that mesh number is 500 mesh.
Embodiment five
A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed by the present invention, includes the following steps：
The section shape of S1, wood, the processing of bamboo wood material are grown up 3cm, width 4cm, high 2cm, by mass percentage, by lye 18%, dihydro Dihydroxy-anthracene disodium salt 0.03%, the wood of water 25% and surplus, bamboo wood material are put into digester, are stirred 20h, are obtained mixture It is spare；
S2, in mass ratio 0.3:0.5:1.1, black liquor and white liquor are added in step S1 in the mixture of gained, are warming up to 95 DEG C, impregnate 40min；
S3, in mass ratio 1.1:2, black liquor and white liquor are mixed and are warming up to 138 DEG C, black, white liquor after will heat up using heat exchanger Mixed liquor be added in the digester in step S1, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation Boiling 40min；
S4, in mass ratio 1.1:2, black liquor and white liquor are mixed and are warming up to 162 DEG C, black, white liquor after will heat up using heat exchanger Mixed liquor be added in the digester in step S2, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation Boiling 80min；
S5, by step S4 slurry and waste liquid detach, washed successively with 80 DEG C of hot water and 20 DEG C of warm water, so It is sieved after being dehydrated afterwards with centrifuge, using the sieve that mesh number is 550 mesh.
A kind of wood, the bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed in the comparison embodiment of the present invention one~five is understood： Wood, the bamboo raw material energy conservation and environmental protection replacing and digesting technoloy proposed in embodiment three, digester cycle is most short, is proposed in example IV Wood, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy, gained pulp strength is best, and comprehensive performance is best.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (1)

1. it is a kind of using paper grade (stock) slurry made of wood, bamboo raw material, use energy conservation and environmental protection replacing and digesting technoloy to be made, feature It is, which includes the following steps：
The section shape of S1, wood, the processing of bamboo wood material are grown up 3cm, width 4cm, high 2cm, by mass percentage, by lye 18%, dihydro Dihydroxy-anthracene disodium salt 0.03%, the wood of water 25% and surplus, bamboo wood material are put into digester, are stirred 20h, are obtained mixture It is spare；
S2, in mass ratio 0.3:0.5:1.1, black liquor and white liquor are added in step S1 in the mixture of gained, are warming up to 95 DEG C, impregnate 40min；
S3, in mass ratio 1.1:2, black liquor and white liquor are mixed and are warming up to 138 DEG C, black, white liquor after will heat up using heat exchanger Mixed liquor be added in the digester in step S1, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation Boiling 40min；
S4, in mass ratio 1.1:2, black liquor and white liquor are mixed and are warming up to 162 DEG C, black, white liquor after will heat up using heat exchanger Mixed liquor be added in the digester in step S2, while the waste liquid in digester being cemented out, after the completion of displacement, heat preservation Boiling 80min；
S5, by step S4 slurry and waste liquid detach, washed successively with 80 DEG C of hot water and 20 DEG C of warm water, so It is sieved after being dehydrated afterwards with centrifuge, using the sieve that mesh number is 550 mesh.
CN201810453528.2A 2016-12-20 2016-12-20 Using paper grade (stock) slurry made of wood, bamboo raw material Withdrawn CN108611896A (en)

Priority Applications (1)

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CN201810453528.2A CN108611896A (en) 2016-12-20 2016-12-20 Using paper grade (stock) slurry made of wood, bamboo raw material
CN201611186941.4A CN106400568B (en) 2016-12-20 2016-12-20 A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy

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CN201810453528.2A Withdrawn CN108611896A (en) 2016-12-20 2016-12-20 Using paper grade (stock) slurry made of wood, bamboo raw material
CN201810781318.6A Withdrawn CN108867131A (en) 2016-12-20 2016-12-20 Wood, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy for pulping and paper-making
CN201810453463.1A Withdrawn CN108385430A (en) 2016-12-20 2016-12-20 Slurry made of the higher wood of intensity, bamboo raw material
CN201810453465.0A Withdrawn CN108560302A (en) 2016-12-20 2016-12-20 Using the higher slurry of intensity made of wood, bamboo raw material
CN201810453520.6A Withdrawn CN108642944A (en) 2016-12-20 2016-12-20 Wood, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy
CN201611186941.4A Active CN106400568B (en) 2016-12-20 2016-12-20 A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy

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CN201810781318.6A Withdrawn CN108867131A (en) 2016-12-20 2016-12-20 Wood, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy for pulping and paper-making
CN201810453463.1A Withdrawn CN108385430A (en) 2016-12-20 2016-12-20 Slurry made of the higher wood of intensity, bamboo raw material
CN201810453465.0A Withdrawn CN108560302A (en) 2016-12-20 2016-12-20 Using the higher slurry of intensity made of wood, bamboo raw material
CN201810453520.6A Withdrawn CN108642944A (en) 2016-12-20 2016-12-20 Wood, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy
CN201611186941.4A Active CN106400568B (en) 2016-12-20 2016-12-20 A kind of wooden, bamboo raw material energy conservation and environmental protection replacing and digesting technoloy

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CN107858847B (en) * 2017-12-19 2023-08-04 四川环龙生活用品有限公司 Device and process for preserving plant fiber original ecology cooking
CN108914666A (en) * 2018-07-16 2018-11-30 潍坊科技学院 A kind of pulping and paper-making auxiliary agent

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CN102493244A (en) * 2011-11-11 2012-06-13 陕西科技大学 Auxiliaries-added replacement cooking process of bamboo materials
CN102995476A (en) * 2011-09-09 2013-03-27 吉林化纤集团有限责任公司 Bamboo wood dissolving pulp replacement and boiling method
CN103352385A (en) * 2013-06-28 2013-10-16 汶瑞机械(山东)有限公司 Energy-saving and environment-friendly displacement cooking process for wood and bamboo raw materials

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JPH04126885A (en) * 1990-09-14 1992-04-27 Akio Onda Production of chemical pulp
CN102154874B (en) * 2011-04-29 2012-11-21 白福安 Replacement cooking pulping method
CN102337684B (en) * 2011-09-30 2013-10-16 重庆理文造纸有限公司 Vapor pre-hydrolysis technique for material slice of bamboo wood dissolving pulp
CN103074793B (en) * 2013-01-22 2015-04-22 陕西科技大学 Displacement cooking method

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Publication number Priority date Publication date Assignee Title
CN101068977A (en) * 2004-10-04 2007-11-07 梅特索纸业股份有限公司 Alkaline process and system for producing pulp
CN102995476A (en) * 2011-09-09 2013-03-27 吉林化纤集团有限责任公司 Bamboo wood dissolving pulp replacement and boiling method
CN102493244A (en) * 2011-11-11 2012-06-13 陕西科技大学 Auxiliaries-added replacement cooking process of bamboo materials
CN103352385A (en) * 2013-06-28 2013-10-16 汶瑞机械(山东)有限公司 Energy-saving and environment-friendly displacement cooking process for wood and bamboo raw materials

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Publication number Publication date
CN106400568A (en) 2017-02-15
CN108867131A (en) 2018-11-23
CN108560302A (en) 2018-09-21
CN108642944A (en) 2018-10-12
CN106400568B (en) 2018-09-04
CN108385430A (en) 2018-08-10

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Application publication date: 20181002