CN102230285B - Pulping system and pulping method for environment-friendly mechanical pulp and chemical mechanical pulp of non-woody crops - Google Patents
Pulping system and pulping method for environment-friendly mechanical pulp and chemical mechanical pulp of non-woody crops Download PDFInfo
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Abstract
The invention provides a pulping system for environment-friendly mechanical pulp and mechanical chemical pulp of non-woody crops, which comprises a cutting machine, a hammer filament duster, an impregnating washer, an I-section cracking impregnator, an II-section cracking impregnator, an I-section storage reaction bin, an II-section storage reaction bin, a high-concentration impregnating millstone mill, an III-section storage reaction bin and a pulping machine and screening, purification and concentration equipment in a subsequent process, wherein a steaming spiral conveyer, the I-section storage reaction bin, the II-section storage reaction bin and the III-section storage reaction bin are provided with steam injecting pipelines, and liquid medicine injecting pipelines are also arranged at the impregnating washer, the cracking tail end of the I-section cracking impregnator, the cracking tail end of the II-section cracking impregnator and the input position of the high-concentration impregnating millstone mill. A pulping method comprises the following steps of: preparing raw materials, performing pre-steaming spiral conveying, connecting two physical filamentation treatment sections in series, performing high-concentration disc impregnating filamentation treatment, and performing high-concentration pulping, screening, purifying and dehydrating to obtain commercial pulp. The technical scheme has the technical advantages of high yield, no pollution, low energy consumption and the like.
Description
Technical field
What the present patent application related to is mechanical pulp, chemi-mechanical pulp pulping system and pulping process method thereof, it is more remarkable that this pulping system and method are applied to mechanical pulp, the chemi-mechanical pulp effects on slurry making of the annual non-woody agronomic crop fibre raw materials such as straw, straw, can also be applied to pulping and make the processing industries such as reconstituted tobacoo.
Background technology
China is the production and consumption big country of paper and cardboard, but timber resources is seriously deficient, and there is the technical problem that environmental pollution is serious, pulp quality is low in the annual non-woody crops such as resourceful straw, straw as the pulping technique of fibrous raw material, therefore have to rely on for a long time the external commodity paper pulp of a large amount of imports.Be accompanied by the whole world to the reinforcement of ecological environmental protection consciousness, the import cost of timber and goods thereof is also more and more high, and in addition, dependence on import paper pulp and goods thereof have seriously jeopardized the sound development of China's paper industry for many years.The chemical pulping that the various woody fibre plants of present application are raw material, chemical-mechanical pulping and machinery pulping technology are comparatively ripe, but annual non-woody fibre plant, comprise resourceful stalk, the agronomic crop fibre resources such as straw, to how take full advantage of them, realize that the low-carbon environment-friendly utilization of resources is the slurrying industry, especially the large technical barrier that faces of paper-making pulping industry, particularly strengthen at present stalk fibre in the paper making pulp, the proportion of agronomic crop fibre slurry, become the inexorable trend of China's pulping and paper-making industry development, so the aspects such as the yield of non-woody fibre plant slurry and quality need that all large technological improvement is arranged.
Environment friendly pulping process is the main direction of field of papermaking research always, technical scheme such as Deutsche Bundespatent NO.19730486 is flooded wood chip 20min with liquefied ammonia under 20bar pressure, passing into steam blasting processes again, fibrous raw material enters in the container after processing, use ethanol: the solution of water=1: 1 is the extracting fibrous raw material repeatedly, dissolved lignin and hemicellulose contain 85% lignin and 90% hemicellulose in its ethanol water.Chinese patent CN101880977A discloses a kind of chemi-mechanical pulp slurrying production method take pinus sylvestris var. mongolica, kahikatea, poplar as raw material, its technical scheme only limits to leaf wood and reaches with the needlebush composite material, but for the non-woody fiber of stalk and crops, adopt said method can not realize high yield, meet index request physical strength and high degree of bleaching, realize the technical purpose of cleaning pulping more being difficult to make the high and medium and high classes finished pulp of degree of bleaching.
The various places that spread all over the country, paper mill, non-woody fibre plant slurrying still major part stays in alkaline pulping method.Crops and grass fiber characteristic and morphological element and lumber fibre have very big-difference, crops and straw fiber raw material have dark, the non-fiber compositions such as ash is large, silicone content is high, the heteroproteose cell characteristics how of self color, these all are unfavorable factors in pulping process, especially soda pulping process technique, the high alkalinity process is removed the compositions such as ash, lignin, produce the sewage pollution environment of a large amount of difficult conversion processing during removal, the reagent consumption such as water consumption and alkalescence is all higher in the technique.Other high alkaline boiling, the centre must arrange washing and the operations such as screening, dehydration pulping, and boiling and bleaching process need independently to carry out, black liquor, middle discharging of waste liquid amount are large, the fibre stream vector is also very large, become that pulp yield is low, suspended matter in the sewage, organic concentration is high, color and luster is dark, its acid or alkalescence are large, biodegradability is poor, bring great pollution pressure to environment.
Summary of the invention
Non-woody crops environmental protection machinery slurry pulping system and pulping process that the goal of the invention of the present patent application is to provide the technical indicator such as a kind of high yield, slurry physical strength and woody fibrous raw material slurry to maintain an equal level also provide the degree of bleaching height, can reach non-woody crops environment protection chemical mechanical pulp pulping system and the pulping process of medium and high classes pulping technical indicator.
The non-woody crops environmental protection machinery slurry pulping system that patent of the present invention provides; press material operation traffic direction; its system forms and comprises the raw material cutting machine; hammer silk dust removal machine; conveying equipment; the dipping washer; drainage is carried and the decatize conveying worm; I section cracking impregnator and conveying equipment thereof; the I section is stored reaction warehouse and conveying equipment thereof; II section cracking impregnator and conveying equipment thereof; the II section is stored reaction warehouse and conveying equipment thereof; high dense dip pan grinding machine and conveying equipment thereof; the III section is stored reaction warehouse and conveying equipment thereof; fiberizer with the back segment operation; screening purifies concentrator, wherein decatize conveying worm; the I section is stored reaction warehouse; the II section stores reaction warehouse and III section storage reaction warehouse is provided with the steam injection pipeline.
The pulping process of being finished by above-mentioned non-woody crops environmental protection machinery slurry pulping system is:
1., the preparation of raw material
By cutting machine, hammer silk dust removal machine raw material is cut off, beats broken silkization, dedusting, slagging-off, send the dipping washer to add water in 60-80 ℃ of temperature range preimpregnation 5-10 minute, the ratio of over dry material and water is 1: 10～25, removes thereafter the impurity such as residue in drainage conveyer drainage;
2., presteaming helical feed
Concentration is the 1. section material of 15-35% when being promoted conveying equipment and is carried to hypomere by spiral, and decatize is softened material in the material space of steam injection decatize conveying worm;
3., two physics silk processing sections of series connection
Two form identical physics silk processing section series connection, physics silk processing I section: material in I section cracking impregnator by strong crowded tear in the heat release tear, refinement, silkization, softening, it is 15-35% that concentration is adjusted in thereafter output, stay in temperature is that 70-90 ℃ I section is stored in the reaction warehouse and stopped 30-90 minute; Be delivered to again the physics silk processing II section identical with the I section;
4., high dense disc type dipping silkization processing
To send into high dense dip pan grinding machine through the slurry of two sections physics silks processing and implement the processing of mill silk, output stores that to stay in temperature be that 70-90 ℃ III section is stored in the reaction warehouse, keeps 30-90 minute;
5., high consistency refining, screening, purification, the thickening shape commercial pulp that must wet.
The present patent application also provides non-woody crops environment protection chemical mechanical pulp pulping system; press material operation traffic direction; its system forms and comprises the raw material cutting machine; hammer silk dust removal machine; conveying equipment; the dipping washer; drainage is carried and the decatize conveying worm; I section cracking impregnator and conveying equipment thereof; the I section is stored reaction warehouse and conveying equipment thereof; II section cracking impregnator and conveying equipment thereof; the II section is stored reaction warehouse and conveying equipment thereof; high dense dip pan grinding machine and conveying equipment thereof; the III section is stored reaction warehouse and conveying equipment thereof; fiberizer with the back segment operation; screening purifies concentrator; decatize conveying worm wherein; the I section is stored reaction warehouse; the II section stores reaction warehouse and III section storage reaction warehouse is provided with the steam injection pipeline, passes into the dipping washer; I section cracking impregnator squeeze crack is terminal; II section cracking impregnator squeeze crack end and high dense dip pan grinding machine input are provided with the liquid filling line.
The present patent application also provides the chemi-mechanical pulp pulping process of being finished by above-mentioned non-woody crops environment protection chemical mechanical pulp pulping system, and wherein each medicament component of method is the percentage amounts that accounts for the non-tree crop raw material weight of over dry, and the method is:
1., the preparation of raw material
By cutting machine, hammer silk dust removal machine raw material is cut off, beats broken silkization, dedusting, slagging-off, in the dipping washer, add the water in 60-80 ℃ of temperature range preimpregnation 5-10 minute contain the preimpregnation medicament, the ratio of over dry material and water is 1: 10～25, removes thereafter the impurity such as residue in drainage conveyer drainage; Described preimpregnation medicament comprises JFC fatty alcohol-polyoxyethylene ether bleeding agent 0.025～0.1%, NaOH 0.1～0.8%, neopelex 0.01～0.15%;
2., presteaming helical feed
Concentration is the 1. section material of 15-35% when being promoted conveying equipment and is carried to hypomere by spiral, and decatize is softened material in the material space of steam injection decatize conveying worm;
3., two physics silk processing sections of series connection
Two form identical physics silk processing section series connection, physics silk processing I section: material in I section cracking impregnator by strong crowded tear in the heat release tear, refinement, silkization, softening, the terminal injection contained the water that floods medicament in machine, adjust concentration to 15-35%, output rests on the I section and stores in the reaction warehouse, stopped 30-90 minute in the scope of 70-90 ℃ of temperature, the pH value that this section reaction finishes is controlled at 7.5～9.0; Be delivered to the physics silk processing II section identical with the I section, the pH value when the II section is stored reaction warehouse reaction end is controlled at 7.5～8.5 again; Wherein said dipping medicament comprises chelating agent 0.25～1%, curing agent 0.5～6%, magnesium sulfate 0.1～1%, sodium metasilicate 2～5%, neopelex 0.02～0.2%, oxygen and floats agent 0.5～6%, chelating agent wherein is one of any among EDTA, the DTPA, and curing agent is one of any in calcium hydroxide, potassium hydroxide, the NaOH; It is one of any in the peroxide such as SODIUM PERCARBONATE, sodium peroxide, hydrogen peroxide, carbamide peroxide, peracetic acid that oxygen wherein floats agent;
4., high dense disc type dipping silkization processing
Will through the slurry of two sections physics silks processing with brighten medicament and jointly send into high dense dip pan grinding machine and implement the mill silk, output is stored and to be rested on temperature is that 70-90 ℃ III section is stored in the reaction warehouse, kept 30-90 minute, the pH value that this section stops after reaction finishes is controlled to be 7.5～8.5; The described pharmacy kit containing magnesium sulfate 0.1～1%, sodium metasilicate 2～5%, oxygen of brightening floats agent 0.5～4%; It is one of any in the peroxide such as SODIUM PERCARBONATE, sodium peroxide, hydrogen peroxide, carbamide peroxide, peracetic acid that oxygen wherein floats agent;
5., high consistency refining, screening, purification, the thickening shape commercial pulp that must wet.
The disclosed non-woody crops environmental protection machinery pulp mechanical pulp pulping system of the present patent application and pulping process, especially for be crops such as annual non-woody fibre stalk, rice wheat straw and designing, it also is suitable for woody cellulosic plant material.The technical scheme of the present patent application forms and process design takes to carry out successively impregnation with operation in pulping system configuration, the progressive PROCESS FOR TREATMENT means of gradually going of bleaching action, just will flood swollen in the removal of impurities washing procedure, decatize is softening to be merged wherein, in the physics silk process of three sections different modes, brute force is removed the non-fiber composition that disturbs slurrying on the one hand, until even refinement pulping, especially in two sections physics silk section operations the non-fiber composition that affects reacting and pulping and bleaching in straw and the grass fiber is extruded disengaging fully, in this step, the technical program is not such as front prior art, be simple material physics to be squeezed pine, squeeze loose, but in the broken refinement of extreme squeeze crack, with the lignin in the tissue, pectin, tannin, heteroproteose cell, ash, liquid matter in resin and the fiber, the strong force extrudings such as air, and break away from partially liq, discharge, clout becomes then that to be similar to the sponge that is extremely compressed the same, at this moment inject required liquid, this compressed velvet material can be rapid, deep absorption liquid, make the liquid rapid osmotic be impregnated into fibrous inside, until in the cell membrane, the trickle section of fibrous raw material all can obtain medicament and fully reaction, lignin and hemicellulose are not dissolved, its a whole set of operation has also been saved the pulp washing step, material or slurry all maintain in 15～40% high concentration states and move, middle-stage wastewater contamination index is extremely low, filtrate and middle-stage wastewater can be through conventional precipitations, filter, air supporting, anaerobism, aerobic water treatment technology, reach environmental emission standard, but fully recovering pulping system required water, the slag of deviating from can give regeneration through biomass gasification system, water saving, energy-saving effect is remarkable.This mechanical pulp, chemi-mechanical pulp pulping system and pulping process thereof have been realized the high yield cooking purpose, paper pulp yield all can reach 80～88%, the whiteness physical strength index of its chemi-mechanical pulp all reaches even has exceeded the technical indicator of the leaf wood chemi-mechanical pulps such as poplar, sees also following table.The present patent application technical scheme has solved present pulping and papermaking industry high pollution, high energy consumption, technical barrier that paper making raw material is in short supply, for the cycling and reutilization of agricultural resource, sustainable development, the ecological environment of preserving our planet of slurrying industry have been opened up a technological approaches.
Description of drawings
The successive system's composition diagram that forms this non-woody crops environmental protection machinery slurry and chemi-mechanical pulp pulping system of Fig. 1 and Fig. 2
Fig. 3 is the general assembly structural representation of hammer silk dust removal machine
Fig. 4 is the transversary schematic diagram of Fig. 3
Fig. 5 is the exterior structure figure of cracking impregnator
Fig. 6 is the cut-away view that cuts open except behind the anterior casing
Fig. 7 is that two rollers cooperates pie graph
Fig. 8 is the sectional structure chart that rolls the dish section
Fig. 9 is the general assembly structural map of storing reaction warehouse
Figure 10 is the structure chart of warehouse base
Figure 11 is the D structure figure of setting wheel
Figure 12 is its whole structure figure of high dense dip pan grinding machine
Figure 13 and Figure 14 are respectively disk structure figure and the two mill matching charts of mill.
The specific embodiment
As shown in drawings; this non-woody crops environmental protection machinery slurry pulping system is identical with the basic composition of non-woody crops environment protection chemical mechanical pulp pulping system; press material operation traffic direction; its pulping system forms and comprises raw material cutting machine 1; hammer silk dust removal machine 2; conveying equipment 3; dipping washer 4; 5; drainage conveying equipment 7 and decatize conveying worm 8; I section cracking impregnator 9 and conveying equipment 10 thereof; the I section is stored reaction warehouse 11 and conveying equipment 12 thereof; II section cracking impregnator 13 and conveying equipment 14 thereof; the II section is stored reaction warehouse 15 and conveying equipment 16 thereof; high dense dip pan grinding machine 17 and conveying equipment 19 thereof; the III section is stored reaction warehouse 20 and conveying equipment 21 thereof; fiberizer 22 with the back segment operation; latency chest 23; low dense fiberizer 25; reserve pit 26; screening clearing machine 28; slurry squeezing thickener 29 is carried the finished product slurry through conveying equipment 30 again.Wherein decatize conveying worm 8, I section are stored reaction warehouse 11, the II section stores reaction warehouse 15 and III section storage reaction warehouse 20 is provided with the steam injection pipeline, drainage conveying equipment 7, slurry squeezing thickener 29 filtering water send wastewater treatment recycling system, the filtering water of slurry squeezing thickener 29 also can be sent into the multi roll sandstone metal collectors of dipping washer 4, replenishes its slurry.Described wastewater treatment recycling system is conventional precipitation, filtration, air supporting, anaerobism, aerobic water treatment technology, formed by coarse rack, flotation tank, screen, preliminary sedimentation tank, the pre-acidification pool of adjusting, IC anaerobic reactor, aerobic aeration tank and second pond, treated purify waste water can reuse supplementary copy pulping system in water; Foreign material, drainage conveying equipment 7, cracking impregnator 9,13 that the broken thin waste material slag bits that sift out in the hammer silk dust removal process, dipping washer 4 soak discharge are discharged the waste residues such as precipitating sludge, high concentration press filtration thickened sludge in organic substance and the wastewater treatment recycling system, send gasification of biomass comprehensively to recycle system, namely mix through double roller mixer, send into bionass fuel bunker, gasification of biomass furnace system, produce biological fuel gas and be stored in the gas tank, or the burning heat release is used or combustion power generation is used.For realizing the chemi-mechanical pulp pulping process, pass into dipping washer 4, I section cracking impregnator 9 squeeze cracks end, II section cracking impregnator 13 squeeze cracks end and high dense dip pan grinding machine 17 inputs and be provided with the liquid filling line.
Stock-cutter wherein can be knife roller type chaffcutter, disk chipper or cut reed machine etc.
Hammer silk dust removal machine wherein can be to increase on the architecture basics of railroad duster, bipyramid dust removal machine, cyclopneumatic separator to beat mechanism and form, and can also select multi-functional sub-wire screening dust removing integrated machine.The formation of this multi-functional sub-wire screening dust removing integrated machine is as shown in Figure 3 and Figure 4: the some beaming rollers 30 that are supported with by horizontal parallel rotation in the tunnel passage of charging aperture 31 to the casing of discharging opening 32, be provided with eight road beaming rollers in the present embodiment, consist of dust-collecting cavity 33 between the sieve plate of beaming roller 30 tops and the upper housing, dust-collecting cavity 33 is communicated with negative pressure mechanism, is communicated with gasification of biomass and comprehensively processes in the recycling system.Evenly be fixedly installed the pin thorn 34 of some quantity on beaming roller 30 surfaces, being evenly arranged between the pin thorn 34 is the hammer cutter 35 that is hinged on the beaming roller 30, and the top of described pin thorn 34 can be spine, also can be the blunt top of circle.Beaming roller 30 belows are provided with lower sieve plate 36, lower sieve plate 36 have with beaming roller on the cambered surface that arranges of pin thorn 34 and hammer cutter 35 maximal margin circular trace spacings, be provided with some roads on the cambered surface and be the bed plate 37 that shearing cooperates with pin thorn 34 and hammer cutter 35.Each beaming roller rotating speed of 32 directions rising High Rotation Speed that goes forward one by one successively from charging aperture 31 to discharging opening.Raw material is advanced by a lot of beaming roller, 37 effects are broken, cut silk, beat, separate with bed plate by the hammer cutter 35 of each road beaming roller 30, pin thorn 34, the plaster of lightweight, the broken foam of leaf etc. are siphoned away by dust-collecting cavity 33 negative pressure on top, the sieve aperture by sieve plate such as the rhabdion of bulk, marrow, slag, stone falls into outside slag trapping chamber 38 and the discharge machine, is long filament shape coarse fiber bundles clean, the size homogeneous by discharging opening 32 outputs finally.
Described dipping washer 4,5 can be selected drum-type rinsing machine, waterpower material washing machine, and dipping washer 4 and 5 is wherein selected respectively multi roll sandstone metal collectors and waterpower impregnator.
Described two sections cracking impregnators, its structure such as Fig. 5 are to shown in Figure 8, agent structure comprises casing, casing fixedly is made of upper and lower two halves casing 84,85 make-ups, rotational support is provided with two- parallel axis roller 80a, 80b in the casing, and charging aperture 86 and discharging opening 87 are separately positioned on the upper and lower side direction in beaming roller two ends.Beaming roller is axially upper to have work section one or work section two or work section three by different order or quantity permutation and combination.Work section one is made of feed auger section A, A1 and the section of rolling A2, the section of rolling A2 is that axial multiple tracks rolls dish 81 stacked compositions, rolling dish 81 is with the cam that rolls arc outline, multiple tracks rolls dish and is crisscross arranged diametrically successively and consists of the section of rolling, and from charging to the discharging direction, the radially stagger angle that multiple tracks rolls dish is by dwindling greatly gradually setting; Work section two is made of feed auger section B1 and grinding tooth dish section B2, grinding tooth dish 82 is the multi-groove type sheave, and respectively encircling of grinding tooth dish 82 evenly offers some skewed slots 83 on the tooth, and the groove depth of skewed slot 83 is identical with the tooth depth of grinding tooth dish 82, its notch is rectangular, and is 15～25 ° angle with the beaming roller axis; Work section three is made of feed auger section C1 and reverse acting spiral section C2, evenly be provided with some skewed slots 89 on the reverse thread tooth 88 of reverse acting spiral section, the groove depth of skewed slot 89 is identical with the tooth depth of reverse thread tooth 88, and its notch is rectangular, and is 30～45 ° of angles with axis.Raw material is sent into this cracking impregnator by decatize conveying worm 8, the physics extruding is implemented in the two rollers engagement, raw material is torn into thread, the heat that discharges simultaneously significantly raises built-in temperature and produces boil-off gas, the raw material cell wall extruding is split, the moisture content of fibrous inside, air and non-fibre composition, such as lignin, pectin, tannin, heteroproteose cell, ash, the materials such as resin are squeezed out by a certain amount of, sifted out by screen cloth in the machine and to drain, raw material extremely is squeezed into the velvet shape, in the adding medicine mouth or steam inlet 84a adding machine of dipping medicament by each work segment ends, the material that is extremely compressed is met liquid and is then absorbed rapidly and be impregnated into fibrous inside until in the cell membrane, make fibrous raw material obtain the rapid osmotic action-reaction as compressed sponge.
Store reaction warehouse for described three sections, its structure is up-small and down-big storage slurry container as shown in Figure 9 and Figure 10.In this enforcement structure, it is to be fixedly connected with or to weld through flange with warehouse 101 by upper shed base 102 to consist of, charging aperture 108 is arranged at warehouse 101 tops, the warehouse base arranges discharge gate 115 on 102 bottom surfaces, steam injection pipe 112 passes into warehouse 101 buffer storage area positions, the buffer storage area position also is provided with manhole 119 and form 118, is convenient to observe slurry reactiveness in the warehouse, and warehouse 101 tops are provided with steam (vapor) outlet 109.Discharging channel 106 is communicated with discharge gate 115, is provided with load displacing screw in the discharging channel 106.The central line shaft of warehouse base 102 central authorities is provided with setting wheel 104, and setting wheel 104 is driven by motor 114, decelerator 105, central line shaft and rotates, and discharge gate is arranged in the warehouse bottom surface district that covers in the material toggling cantilever rotation of setting wheel 104.Described setting wheel can be the multiple-blade wheel, or evenly be provided with the Structural Tectonics of some material toggling blades on the multiple tracks concentric circles frame, or the structure of setting wheel as shown in figure 11: setting wheel 104 is to be made of material toggling cantilever and the some material-setting bodies 117 that are fixed in the material toggling cantilever, the cross section of material-setting body 117 is that leg-of-mutton column type body is implemented structure, the triangle cusped edge of this material-setting body 117 all is arranged in the setting wheel rotation and meets the material toggling direction of rotation, the column type body is vertically fixed on the material toggling cantilever, material-setting body 117 is with the material toggling cantilever-rotating time, the inclined edge surfaces of its corner post has improved the efficient that promotes material toggling, the top and bottom of material-setting body 117 all are the angle, pinnacle, can be effectively with fiber put up a bridge dial from, dial loose, and with the material toggling cantilever jointly with quiet storage slurry from level to level, continuously push discharge gate to; Improve the material toggling cantilever the material toggling effect, increase the active length of material toggling cantilever, the outer cantilever 137 of material toggling cantilever is bent angle α with relative interior cantilever 127, this bent angle α should be greater than 90 ° and be not more than 180 ° of angular ranges.Material-setting body can also be the type body of other structure, other deformed sections close with triangle such as the cross section, such as the face at semi circular surface, semiellipse face, half parabolic edge, trapezoidal shape face etc., narrow fin of these type bodies met the material toggling direction of rotation fixedly on the material toggling cantilever.Be positioned at charging aperture 108 belows, rotate and to be assemblied in warehouse 101 center of top and to be provided with dispersal of feed dish 111.The upper surface of this dispersal of feed dish 111 is provided with taper surface.Dispersal of feed dish 111 rotation in the input slurry falls, and can dispersed paste, slurry is uniformly distributed in the warehouse 101, pass into steam, provide to steam and float heating-up temperature, after the stop reaction of a period of time, setting wheel 104 is driven in rotation, and slurry is discharged warehouse continuously.
As shown in figure 12, the Structural Tectonics of the dense dip pan grinding machine 17 of described height is: the casing formation comprises feeding-passage 208, mill chamber 203 and main shaft bearing support 202, fixed millstone 214 is fixed on the one side cover 213 of mill chamber, feeding-passage 208 passes into mill chamber 203 by the pit of the stomach in the fixed millstone 214, be provided with feed auger 211 by bearing 212 supports in the feeding-passage 208, main shaft 206 horizontally rotates support setting by bearing support 202, feed auger 211 and main shaft 206 coaxial lines, rotating disk 216 is fixedly mounted on main shaft 206 and penetrates on the axle head in the mill chamber 203, this rotating disk 216 is fixed on main-axis end by the locking wing wheel 217 that plays material-distributing action, movable grinding disc 215 bolts are fixedly mounted on the rotating disk 216, make two mills be mill and separate cooperation.As shown in figure 14, high mill solution type mill comprises fixed millstone 214 and the movable grinding disc 215 of relative engagement, on the card of fixed millstone 214 and movable grinding disc 215 from the inside to the outside correspondence be provided with sub-material mill district L, dispersion mill district M and fine grinding district N, sub-material mill district L and fine grinding district N can be hook radial pattern roll flute districts as shown in the figure, it also can be the roll flute district of the parallel distribution in oblique angle, the sub-material mill is distinguished L roll flute distribution density less than fine grinding district N, and the sub-material of two mills mill district L and fine grinding district N are the plane clearance mill and separate cooperation.Dispersion mill district M is that the concavo-convex chimeric multiple tracks concentric teeth of two mills is periphery and puts the district, evenly offer the current groove of some materials on the per pass engagement ring gear, as shown in the figure, the inner ring of dispersion mill district M has the groove of larger slot mouth with respect to the outer ring, and the ring gear width between two grooves is also greater than outer ring tooth, and namely groove width of rebate and ring gear width are slow convergent trend from the inside to the outside.In order to realize that material grinds the dipping of realizing required liquid when separating, pass into feeding-passage 208 and be provided with liquid inlet pipe 209 and steam inlet tube 210, during charging, dipping liquid and steam are respectively by in liquid inlet pipe 209 and steam inlet tube 210 injecting feedings, material and liquid mix by feed auger and send into, in fully mixing, material-distributing action by locking wing wheel 217, the material of dipping mixing is brought into the mill district of two mills, material is clamp-oned dispersion mill district M and fine grinding district N under the powerful progradation of sub-material mill district L, with the medicament impregnation, final qualified slurry is discharged by the bottom discharge gate in fibrillating is processed.
By the pulping process that above-mentioned non-woody crops environmental protection machinery slurry pulping system is finished, concrete implementation method is:
Embodiment 1
The machinery natural color pulp take straw as raw material system
Raw material enters in the hammer silk dust removal machine 2 by knife roller type chaffcutter 1 chaffcutter, the waste material slag bits that filter out are delivered to the waste residue gasification of biomass by the collection conveying equipment and are comprehensively recycled system, raw material is sent into as in the multi roll sandstone metal collectors of flooding washer 4 by conveying equipment 3 again, effect by multiple roll material toggling sheet and current, raw material is through pre-wash, 75 ℃ of washing water temperatures, with heavy foreign bodies removals such as the bulk sandstone carried secretly in the raw material or metal sundries, fall into outside the bottom collection slag ladle timing discharge machine, material is flooded in the pre-dipping machine of waterpower of washer 5 from flowing to conduct by the effect of current, effect by quick runner, raw material is acutely rolled up and down, be attached to the earth on raw material surface, the fine impurities such as sand are separated to come, then raw material and washings are delivered in the drainage conveying equipment 7 by feedstock pump, raw material is upwards carried by Action of Gravity Field by the bottom, the free water that is mingled with in the raw material is discharged from the spiral sieve aperture, send in the I section cracking impregnator 9 by decatize conveying worm 8 after the raw material dehydration, 100 ℃ of steam temperatures, tear effect by extruding in the machine, raw material is become the filamentary fibers bundle by sub-wire, and tear in extruding and to have produced high temperature and steam in the process, fiber has obtained softening fully, slurry concentration 35% in the reconditioner, 80 ℃ of temperature.Then send into the I section by conveying equipment 10 and store reaction warehouse 11, time of staying 30min, the steam that pulp fiber passes at the bottom of by the storehouse is further softening, 80 ℃ of temperature, then concentration 30% sent in the II section cracking impregnator 13 through conveying equipment 12, and slurry has passed through again extruding and torn the mill effect of rubbing with the hands, pulp fiber is by further refinement and softening, slurry concentration 35% in the reconditioner, then 80 ℃ of temperature are sent into the II section by conveying equipment 14 and are stored reaction warehouse 15,80 ℃ of temperature, concentration 30%, time of staying 30min is after after a while, pulp fiber is sent into the high dense dipping beating of disk refiner of two series connection through conveying equipment 16, beating consistency 25% screens by pressurized screen behind the pulping, and good slurry is admitted to belt filter press, by filter-press dehydration, obtain the wet shape commodity true qualities paper pulp of concentration 25-30%.Slag slurry in the pressure screening process is sent into defibrination system reslurry again.
By the waste liquid that belt filter press is deviate from, send in the wastewater treatment recycling system filter, precipitate, the processing of flocculation, air supporting, anaerobism, the process equipment such as aerobic, the water after the processing is back in the pulping system.
The organic substance that the pulp fiber inside that the foreign material of discharging when the broken thin waste material slag bits that sift out in chaffcutter, hammer silk dust removal process and wet method preimpregnation and cracking impregnator are discharged is extruded, and the sediment in the water treatment procedure, the waste residues such as high concentration press filtration mud, send into gasification of biomass after the abundant mixing by double roller mixer and comprehensively recycle system, produce thus biological fuel gas, be back in the system equipment by fuel gas generation unit generation electric energy and use.
Embodiment 2:
Take wheat straw or straw as raw material bleached pulp processed
Raw material is by knife roller type chaffcutter 1 chaffcutter, then enter in the hammer silk dust removal machine 2, the waste material slag bits that filter out are delivered to gasification of biomass by the collection conveying equipment and are comprehensively recycled system, raw material is sent into as in the multi roll sandstone metal collectors of flooding washer 4 by conveying equipment 3 again, effect by multiple roll material toggling sheet and current, raw material is through pre-wash, add the preimpregnation medicament in the washings, this preimpregnation pharmacy kit contains JFC0.05%, neopelex 0.05% and NaOH 0.3%, liquor ratio 1: 20,75 ℃ of washing water temperatures, accelerate infiltration, the swollen raw fiber, and with heavy foreign bodies removals such as the bulk sandstone carried secretly in the raw material or metal sundries, fall into outside the bottom collection slag ladle timing discharge machine, washing material is flooded in the pre-dipping machine of waterpower of washer 5 from flowing to conduct by the effect of current, effect by quick runner, raw material is acutely rolled up and down, be attached to the earth on raw material surface, the fine impurities such as sand are separated to come, then raw material and washings are delivered in the drainage conveying equipment 7 by feedstock pump, raw material is upwards carried by Action of Gravity Field by the bottom, the free water that is mingled with in the raw material is discharged from the spiral sieve aperture, send in the I section cracking impregnator 9 by decatize conveying worm 8 after the raw material dehydration, 100 ℃ of steam temperatures, tear the effect of rubbing mill and dipping liquid with the hands by the extruding of cracking impregnator, raw material changes coarse fiber bundle into, and begins to soften, oxidation, decolouring.Wherein I section dipping pharmacy kit contains DTPA 0.5%, calcium hydroxide 3%, SODIUM PERCARBONATE 1%, sodium metasilicate 2%, magnesium sulfate 0.5% and neopelex 0.1%, dipping sizing agent concentration 28% in the machine, 88 ℃ of temperature.
Slurry behind the I section squeeze crack dipping is sent into the I section by conveying equipment 10 spirals and is stored reaction warehouse 11,85 ℃ of reaction temperatures, reaction density 25%, reaction time 30min, then conveying equipment 12 is sent in the II section cracking impregnator 13, slurry has passed through again the maceration of the extruding effect of tearing and liquid, pulp fiber is by further refinement and bleaching, wherein II section dipping pharmacy kit contains DTPA0.5%, NaOH 2%, sodium metasilicate 4%, magnesium sulfate 0.5%, neopelex 0.1% and hydrogen peroxide 4%, dipping concentration 28%, 88 ℃ of temperature.Then send into the II section by conveying equipment 14 and store reaction warehouse 15,85 ℃ of reaction temperatures, reaction density 25%, reaction time 60min.Then sent in the high dense dip pan grinding machine 17 of III section by conveying equipment 16, carry out fibrillating and brighten impregnation process, the bleaching liquid of sending into medicine system at charging aperture place slurry is mixed by spiral agitator, by the effect of the dense dipping mill of height and the high-temperature steam of generation, pulp fiber is by further refinement, soften and brighten and process with the stable slurry whiteness, wherein brighten pharmacy kit and contain sodium metasilicate 2%, magnesium sulfate 0.5% and hydrogen peroxide 2%, then sent into by conveyor screw and store reaction pulp bin 20,90 ℃ of reaction temperatures, reaction density 22%, reaction time 60min, after reaction, the whole oxidized decolouring bleachings of chromophoric group in the pulp fiber.Then send into 22 2 series connection making beating of senior middle school's concentration fiberizer through conveying equipment 21, beating consistency 22%, mill disposed slurry gravity flow falls into latency chest 23 and disappears to dive and process, deliver to pressurized screen by stock pump again and screen, good slurry is admitted to belt filter press, passes through filter-press dehydration, obtain whiteness 75%ISO, the concentration 25-30% shape market pulp that wets also can be sent into the online of sizing mixing of paper machine system and copy paper, and the slag slurry in the pressure screening process is sent into defibrination system reslurry again.
The waste liquid of deviating from by belt filter press, wherein a part is back to the wet method preimpregnation behind simple and easy sedimentation and filtration, be used as and wash the pre-immersion of material, remaining most middle-stage wastewater is sent in the wastewater treatment recycling system and is filtered, precipitates, the processing of flocculation, air supporting, anaerobism, the process equipment such as aerobic, and the water after the processing is back in the pulping system.
The broken thin waste material slag bits that in chaffcutter, sub-wire screening dust removal process, sift out, the pulp fiber inside that the foreign material of discharging during the wet method preimpregnation and cracking impregnator are discharged is by the organic substance of extracting, and the sediment in the water treatment procedure, the waste residues such as high concentration press filtration mud, send into biomass gasification system after the abundant mixing by double roller mixer, produce thus biological fuel gas, be back in the system equipment by fuel gas generation unit generation electric energy and use.
Embodiment 3
The bleached pulp processed take bagasse as raw material
This raw material has become the disintegrating slag shape in the sugaring process, so this raw material is directly sent in the hammer silk dust removal machine 2 except the marrow processing by belt conveyor, the sugarcane marrow that filters out, the slag bits are delivered to the waste residue biomass gasification system by collecting conveying equipment, raw material is sent into as in the multi roll sandstone metal collectors of flooding washer 4 by conveying equipment 3 again, effect by multiple roll material toggling sheet and current, raw material is through pre-wash, adding the preimpregnation pharmacy kit in the washings contains: JFC0.05%, neopelex 0.05% and NaOH 0.5%, liquor ratio 1: 20,75 ℃ of washing water temperatures, with heavy foreign bodies removals such as the bulk sandstone carried secretly in the raw material or metal sundries, fall into outside the bottom collection slag ladle timing discharge machine, washing material is flow in the drainage conveying equipment 7 certainly by the effect of current, raw material is upwards carried by Action of Gravity Field by the bottom, being mingled with plaster in the raw material discharges from the spiral sieve aperture with current, send in the I section cracking impregnator 9 by decatize conveying worm 8 after the raw material dehydration, tear the impregnation of rubbing mill effect and liquid with the hands by extruding in the machine, raw material changes crude fibre into and begins and softens, oxidation, decolouring.Wherein flood pharmacy kit and contain DTPA 0.5%, NaOH 4%, SODIUM PERCARBONATE 1%, sodium metasilicate 2%, magnesium sulfate 0.5% and neopelex 0.1%, dipping sizing agent concentration 30% in the machine, 90 ℃ of temperature.Slurry behind the I section squeeze crack dipping is sent into the I section by conveying equipment 10 and is stored reaction warehouse 11,85 ℃ of reaction temperatures, concentration 25%, reaction time 60min, then send in the II section cracking impregnator 13 through conveying equipment 12, slurry has passed through again the maceration of the extruding effect of tearing and liquid, pulp fiber is by further refinement and bleaching, wherein II section dipping pharmacy kit contains DTPA 0.5%, NaOH 2%, sodium metasilicate 4%, magnesium sulfate 0.5%, neopelex 0.1% and hydrogen peroxide 4%, dipping sizing agent concentration 30% in the machine, 90 ℃ of temperature.Then send into the II section by conveying equipment 14 and store reaction warehouse 15,85 ℃ of reaction temperatures, concentration 25%, reaction time 60min.Then send in the high dense mill impregnator 17 of III section through conveying equipment 16, carry out extra-milled fibreization and brighten impregnation process, the bleaching liquid of sending into medicine system at charging aperture place slurry is mixed by spiral agitator, by the effect of the dense dipping mill of height and the high-temperature steam of generation, pulp fiber is by further refinement, soften and brighten and process with the stable slurry whiteness, wherein brighten pharmacy kit and contain sodium metasilicate 2%, magnesium sulfate 0.5%, hydrogen peroxide 1.5%, then sent into by conveyor screw and store the reaction pulp bin, through 90 ℃ of reaction temperatures, reaction density 22%, reaction time 60min, after reaction, the whole oxidized decolouring bleachings of chromophoric group in the pulp fiber.Then send into two series connection making beating of senior middle school's concentration fiberizer through conveying equipment 21, beating consistency 25%, mill disposed slurry gravity flow falls into latency chest 23 and disappears to dive and process, deliver to the making beating of DFSP cone flat double disc refiner by stock pump again, delivering to pressurized screen by stock pump again behind the pulping screens, good slurry is admitted to belt filter press, pass through filter-press dehydration, obtain whiteness 80%ISO, the concentration 25-30% shape market pulp that wets, also can send into the online of sizing mixing of paper machine system and copy paper, the slag slurry in the pressure screening process is sent into defibrination system reslurry again.
The waste liquid of deviating from by belt filter press, wherein a part is back to the wet method preimpregnation behind simple and easy sedimentation and filtration, be used as and wash the pre-immersion of material, remaining most middle-stage wastewater is sent in the wastewater treatment recycling system and is filtered, precipitates, the processing of flocculation, air supporting, anaerobism, the process equipment such as aerobic, and the water after the processing is back in the pulping system.
The pulp fiber inside that the foreign material of discharging when the sugarcane marrow slag bits that sift out in sub-wire screening dust removal process and wet method preimpregnation and cracking impregnator are discharged is by the organic substance of extracting, and the sediment in the water treatment procedure, the waste residues such as high concentration press filtration mud, send into biomass gasification system after the abundant mixing by double roller mixer, produce thus biological fuel gas, be back in the system equipment by fuel gas generation unit generation electric energy and use.
Claims (4)
1. a non-woody crops environmental protection machinery is starched pulping process, it is characterized in that the method is:
1., the preparation of raw material
By cutting machine, hammer silk dust removal machine raw material is cut off, beats broken silkization, dedusting, slagging-off, send the dipping washer to add water in 60-80 ℃ of temperature range preimpregnation 5-10 minute, the ratio of over dry material and water is 1:10～25, removes thereafter residue impurity in drainage conveyer drainage;
2., presteaming helical feed
Concentration is the 1. section material of 15-35% when being promoted conveying equipment and is carried to hypomere by spiral, and decatize is softened material in the material space of steam injection decatize conveying worm;
3., two physics silk processing sections of series connection
Two form identical physics silk processing section series connection, physics silk processing I section: material in I section cracking impregnator by strong crowded tear in the heat release tear, refinement, silkization, softening, it is 15-35% that concentration is adjusted in thereafter output, stay in temperature is that 70-90 ℃ I section is stored in the reaction warehouse and stopped 30-90 minute; Be delivered to again the physics silk processing II section identical with the I section;
4., high dense disc type dipping silkization processing
To send into high dense dip pan grinding machine through the slurry of two sections physics silks processing and implement the processing of mill silk, output stores that to stay in temperature be that 70-90 ℃ III section is stored in the reaction warehouse, keeps 30-90 minute;
5., high consistency refining, screening, purification, the thickening shape commercial pulp that must wet.
2. a non-woody crops environment protection chemical mechanical pulp pulping process is characterized in that each the medicament component that relates in the method is the percentage amounts that accounts for the non-tree crop raw material weight of over dry, and the method is:
1., the preparation of raw material
By cutting machine, hammer silk dust removal machine raw material is cut off, beats broken silkization, dedusting, slagging-off, in the dipping washer, add the water in 60-80 ℃ of temperature range preimpregnation 5-10 minute contain the preimpregnation medicament, the ratio of over dry material and water is 1:10～25, removes thereafter residue impurity in drainage conveyer drainage; Described preimpregnation medicament comprises JFC fatty alcohol-polyoxyethylene ether bleeding agent 0.025～0.1%, NaOH 0.1～0.8%, neopelex 0.01～0.15%;
2., presteaming helical feed
Concentration is the 1. section material of 15-35% when being promoted conveying equipment and is carried to hypomere by spiral, and decatize is softened material in the material space of steam injection decatize conveying worm;
3., two physics silk processing sections of series connection
Two form identical physics silk processing section series connection, physics silk processing I section: material in I section cracking impregnator by strong crowded tear in the heat release tear, refinement, silkization, softening, the terminal injection contained the water that floods medicament in machine, adjust concentration to 15-35%, output rests on the I section and stores in the reaction warehouse, stopped 30-90 minute in the scope of 70-90 ℃ of temperature, the pH value that this section reaction finishes is controlled at 7.5～9.0; Be delivered to the physics silk processing II section identical with the I section, the pH value when the II section is stored reaction warehouse reaction end is controlled at 7.5～8.5 again; Wherein said dipping medicament comprises chelating agent 0.25～1%, curing agent 0.5～6%, magnesium sulfate 0.1～1%, sodium metasilicate 2～5%, neopelex 0.02～0.2%, oxygen and floats agent 0.5～6%, chelating agent wherein is one of any among EDTA, the DTPA, and curing agent is one of any in calcium hydroxide, potassium hydroxide, the NaOH; It is one of any in the peroxide such as SODIUM PERCARBONATE, sodium peroxide, hydrogen peroxide, carbamide peroxide, peracetic acid that oxygen wherein floats agent;
4., high dense disc type dipping silkization processing
Will through the slurry of two sections physics silks processing with brighten medicament and jointly send into high dense dip pan grinding machine and implement the mill silk, output is stored and to be rested on temperature is that 70-90 ℃ III section is stored in the reaction warehouse, kept 30-90 minute, the pH value that this section stops after reaction finishes is controlled to be 7.5～8.5; The described pharmacy kit containing magnesium sulfate 0.1～1%, sodium metasilicate 2～5%, oxygen of brightening floats agent 0.5～4%; It is one of any in the peroxide such as SODIUM PERCARBONATE, sodium peroxide, hydrogen peroxide, carbamide peroxide, peracetic acid that oxygen wherein floats agent;
5., high consistency refining, screening, purification, the thickening shape commercial pulp that must wet.
3. according to claim 2 non-woody crops environment protection chemical mechanical pulp pulping process; it is characterized in that this preimpregnation pharmacy kit wherein contains JFC fatty alcohol-polyoxyethylene ether bleeding agent 0.05%; NaOH 0.3% and neopelex 0.05%; its dipping pharmacy kit contains DTPA 0.5%; calcium hydroxide 3%; SODIUM PERCARBONATE 1%; sodium metasilicate 2%; magnesium sulfate 0.5% and neopelex 0.1%; I section dipping pharmacy kit wherein contains DTPA 0.5%; calcium hydroxide 3%; SODIUM PERCARBONATE 1%; sodium metasilicate 2%; magnesium sulfate 0.5% and neopelex 0.1%; II section dipping pharmacy kit contains DTPA 0.5%; NaOH 2%; sodium metasilicate 4%; magnesium sulfate 0.5%; neopelex 0.1% and hydrogen peroxide 4%, the pharmacy kit that brightens wherein contains sodium metasilicate 2%; magnesium sulfate 0.5% and hydrogen peroxide 2%.
4. according to claim 2 non-woody crops environment protection chemical mechanical pulp pulping process; it is characterized in that preimpregnation medicament wherein: JFC fatty alcohol-polyoxyethylene ether bleeding agent 0.05%; NaOH 0.5% and neopelex 0.05%; I section dipping pharmacy kit wherein contains DTPA 0.5%; NaOH 4%; SODIUM PERCARBONATE 1%; sodium metasilicate 2%; magnesium sulfate 0.5% and neopelex 0.1%; the dipping pharmacy kit of II section wherein contains DTPA 0.5%; NaOH 2%; sodium metasilicate 4%; magnesium sulfate 0.5%; neopelex 0.1% and hydrogen peroxide 4%, the pharmacy kit that brightens wherein contains sodium metasilicate 2%; magnesium sulfate 0.5% and hydrogen peroxide 1.5%.
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