CN101649565A

CN101649565A - Clean pulping method for comprehensively utilizing plant fibre components through separation

Info

Publication number: CN101649565A
Application number: CN200810118240A
Authority: CN
Inventors: 李朝旺; 胡维山; 李跃怡; 张翠侠
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-11
Filing date: 2008-08-11
Publication date: 2010-02-17

Abstract

The invention provides a clean pulping method for comprehensively utilizing plant fibre components through separation, which is a pioneering invention in the pulping field of paper making. The clean pulping method is mainly technically characterized by comprising the following steps: cutting or crushing various plant fibres and separating rootlets, leaves, spikes and epidermis for making granularfuel, and the like through screening; dipping residual materials and separating extract for extracting flavone, bactericide, fragrant substance, and the like; squeezing and separating the residual materials by using a squeezing-thread rolling machine, and using juice to make sugar, ethanol and the like; sending the residual materials to a curing hydrolysis cabin, and separating 90 percent hemicellulose, 50 percent lignin and 5 to 10 percent fine cellulose for making foodstuff such as xylitol, drug additive and industrial raw materials; and screening the cellulose after bleaching, untwining anddisc milling by using a 20-mesh hole sizer and a 80-mesh slot sieve to make different paper and methylcellulose, viscose pulp, lignans, and the like according to different components of high, mediumand low yields. Through five times of separation of plant fibre components, the clean pulping method reaches the goal of comprehensive utilization and turning wastes into valuables.

Description

Plant fibre components comprehensive utilization of separation clean pulping method

Technical field

The present invention is the pioneering invention in paper-making pulping field.

Background technology

The tradition pulping and papermaking method is with slurrying means, yield height and use chemicals how much to be divided into chemical pulp, change machine slurry and mechanical pulp roughly, though these slurries are planted excellent length is arranged respectively, but still insoluble drawback is arranged: one, traditional pulping and paper-making adopts the footpath material more than 90%, and some shrub fibers (as salix monogolica, mulberry shoot, the twigs of the chaste tree etc.) seldom utilize or can not utilize at all, make that the art material is fewer and feweri, and a lot of available string wastes.Two, string is used for papermaking and has only utilized its function of 40%, also has 60% function not to be exploited as yet, as is used for food, clothing, medicine, building materials etc.Three, traditional pulping process is given up a lot of valuable compositions in the string in vain as refuse, pollutant, and will increase equipment, prolongs operation, uses chemicals to increase pollutant (COD, BOD chloride, sulfide etc.), increase the weight of treatment cost and burden.Though improve to some extent in " enclosed type cycle oxygenolysis pulping method (number of patent application 02131353.9) " and " self coupled oxidation cleaning pulp making method (number of patent application 200610057235.X) " reduction, not yet on the plant fibre components comprehensive utilization of separation important breakthrough being arranged to the utilization of string and pollutional load.

Summary of the invention

The technology of the present invention feature is with various string cuttings or broken, filters out epidermis, coring, Ye Sui etc., finishes component separation for the first time, and above-mentioned discarded object is made granular fuel, feed respectively or is used for the biogas bed material; After the screening raw material is immersed in 30 ℃～50 ℃ warm water, realizes that component is separated for the second time, the fibre fractionation that is about to be easy to decompose in the fiber is (as the flavones in mulberry shoot, the sea-buckthorn: the medicinal ingredient in the medicinal plant etc.), maceration extract derived be used.Raw material behind the dipping is delivered in the juice extracting and fibre rolling machine and crumples repeatedly, pushes, on the one hand raw material is crumpled into velutinate fibre bundle, realize that on the other hand component is separated for the third time, soon the tannin in the fiber, pectin, sugar etc. are further extruded and (are extruded back sugaring or alcohol fuel as sugarcane, sorgo juice; Corn, hybrid giant napier juice are made pure natural beverage; Sunflower bar, castor-oil plant bar, beanstalk class juice are made grease etc.).Tow transport after the thread rolling is to efficient slaking hydrolysis storehouse, logical steam adds the potassium base hydrogen peroxide (patent No. 200620138146.3) of water and the generation of ionic membrane switch, starch dense about 30%, 80 ℃ to 120 ℃ of temperature, blowing behind insulation 30min～60min, with the shove spiral liquid is extruded, realize the 4th component separation, soon 90% hemicellulose and 50% lignin and 5%～10% immature small cellulose are separated, to extrude the liquid oven dry, the steam reuse, (stripping about 100～300kg) was used to make xylitol and food to residue during the over dry raw material was per ton, drug additive.Cellulose after the hydrolysis is looked different purposes make different disposal, as be used for packing, boxboard, the paper wasp nest can directly be discongested, mill can use, be used to make cultural paper or make viscose glue slurry paper tinsel, methylcellulose, plant the fat element then need raw material be delivered in the comprehensive generator of string photoelectricity oxygen (patent No. 200620138146.3) adopt without any poisonous and harmful substance, the bleaching process that does not have heavy-metal residual, with the bleaching after cellulose through discongesting, grinding the back adopts 20 order hole sizers and 80 sighting slits to screen, the fiber of screening is realized the 5th component separation, be about to high yield (70%～90%) slurry and be used to make the papers for books and periodicals that is suitable for printing, newsprint, the slurry of middle yield (50%～70%) is made high-grade culture paper, loan, speciality paper etc. are made methylcellulose with the elaboration slurry of 30%～50% yield, viscose glue slurry paper tinsel etc.Separate the purpose that reaches various string comprehensive utilizations, turns waste into wealth through above-mentioned five plant fibre components, thoroughly solved the low many difficult problems of paper-making pulping waste, pollution and utilization rate simultaneously.

Specific implementation method 1, various straws are cut into pieces or broken, filter out foreign material such as coring, Ye Sui, epidermis, be used to make granular fuel, feed or biogas bed material, realize that the component first time of string is separated.

2, the raw material after will screening is immersed in 30 ℃～50 ℃ warm water; the fibre fractionation that is easy to decomposition and separation in the fiber is extracted; be used to extract the material useful to the mankind; as from mulberry shoot, sea-buckthorn, extracting Phellinus ketone, Hippophate flavone; from fragrant flower Chinese scholar tree, fragrant camphor tree, extract essence, from Chinese holly tree, margosa, extract bactericide etc.Realize the component separation second time of string.

3, the raw material after will flooding is delivered in the juice extracting and fibre rolling machine and crumples repeatedly, pushes, on the one hand raw material is crumpled into velutinate fibre bundle, on the other hand the tannin in the fiber, pectin, sugar etc. are further extruded, extruded back sugaring or alcohol fuel as sugarcane, sorgo juice; Corn, hybrid giant napier juice are made pure natural beverage; Sunflower Stalk, castor-oil plant stalk, beanstalk class juice are made grease; Various pines extract the turpentine wet goods, realize that the component for the third time of string is separated.

4, in the extremely efficient slaking hydrolysis storehouse of the tow transport after the thread rolling, the potassium base hydrogen peroxide that adds water and the generation of ionic membrane switch by steam, starch dense about 30%, 80 ℃ to 120 ℃ of temperature, blowing behind insulation 30min～60min, with the shove spiral liquid is extruded, realize the 4th component separation of string, being about to the hemicellulose of 90% in the string and 50% lignin and 5%～10% immature small cellulose separates, to extrude the liquid oven dry, the steam reuse, (stripping about 100～300kg) was used to make this sugar alcohol and food to residue during the over dry raw material was per ton, drug additive.

5, cellulose after the hydrolysis is looked unlike material, different purposes adopt different process to handle, as be used for packing, boxboard, the natural color pulp fiber of paper wasp nest can directly be discongested, mill can use, be used to make various cultural papers or making viscose glue pulp, methylcellulose, plant the fat element then need raw material is delivered in the comprehensive generator of string photoelectricity oxygen, employing without any poisonous and harmful substance (as sulphur, chlorine etc.), the bleaching process that does not have heavy-metal residual, with the bleaching after fiber through discongesting, grinding the back adopts 20 order hole sizers and 80 sighting slits to screen, high yield (70%～90%) slurry is used to make the papers for books and periodicals that is suitable for printing, newsprint, the slurry of middle yield (50%～70%) is made high-grade culture paper and speciality paper, that will hang down yield (30%～50%) makes methylcellulose than pure cellulose elaboration slurry, viscose glue slurry paper tinsel and speciality paper goods, fibre realizes that the 5th component of string separated.

Separate through above-mentioned five plant fibre components, reach the purpose that various strings (arbor, shrub, dogstail, stalk class) fully utilize, turn waste into wealth, thoroughly solved the low many difficult problems of paper-making pulping waste, pollution and utilization rate simultaneously.

Claims

Plant fibre components comprehensive utilization of separation clean pulping method major technique feature is that cutting of various strings or broken, screening and separating are gone out coring, Ye Sui, epidermis etc. and be used to make granular fuel; With the clout dipping, isolate extract and be used to extract flavones, bactericide, fragrant plain; Clout with the juice extracting and fibre rolling machine separation of squeezing the juice, is used for sugaring, ethanol with juice; Clout is delivered to slaking hydrolysis storehouse, isolates 90% hemicellulose, 50% lignin and 5%～10% small cellulose, be used to make food, drug additive and the raw materials of industry such as xylitol; Cellulose is bleached, discongested, screens with 20 order hole sizers and 80 sighting slits behind the mill, be used to make different paper and methylcellulose, viscose glue pulp, plant the fat element by high, medium and low yield different component.