CN205223720U - Non - wood pulp low carbon papermaking cogeneration system - Google Patents
Non - wood pulp low carbon papermaking cogeneration system Download PDFInfo
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- CN205223720U CN205223720U CN201520974671.8U CN201520974671U CN205223720U CN 205223720 U CN205223720 U CN 205223720U CN 201520974671 U CN201520974671 U CN 201520974671U CN 205223720 U CN205223720 U CN 205223720U
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Abstract
The utility model discloses a non - wood pulp low carbon papermaking cogeneration system, its characterized in that low carbon papermaking cogeneration system includes straw prepare material station, slurrying subsystem, papermaking subsystem and alkali recovery power generation subsystem, the slurrying subsystem include with the slurrying workshop system that the straw was prepare material and is stood and link to each other, the papermaking subsystem includes the paper machine room system, alkali recovery power generation subsystem includes that the system on silicon is removed to the one -level that connects gradually, the second grade removes system on silicon, vaporization system, black liquor injection furnace and turbo generator set, wherein the system on silicon was removed to the one -level black liquor feed inlet with the black liquor export of slurrying workshop system links to each other. The utility model has the advantages that, low carbon papermaking cogeneration system uses crop straw as raw materials slurrying, system gas, generates electricity and papermaking, get rid of the silicon that takes the black liquor in the raw materials to, realize the economical operation zero release, protection forest trees, ecological protection climatic environment.
Description
Technical field
The utility model belongs to agriculture field, is specifically related to a kind of non-wood pulp low-carbon (LC) papermaking cogeneration system.
Background technology
Non-wood pulp papermaking is the original conventional industries of China.105 years Christian eras the Eastern Han Dynasty, Cai Lun kowtows pulping invention papermaking technology with rag, crudefiber crop, fishing net, bark water, creates non-wood pulp papermaking.Paddy and wheat grass and paper manufacture with bamboo pulp is generally used period to the Song dynasty.Qing Dynasty Guangxi 10 years, Shanghai machine papermaking office develops rag stock machine-made paper.The Republic of China 17 years, the south of the River, Shanghai paper company succeeds in developing reed pulp and replaces wood pulp papermaking, saves cost 40%.The grand literary composition in nineteen fifty-one Shanghai, Xinhua, the south of the River, sharp magnificent paper mill are succeeded in developing with large agricultural crop straw chemical bleaching slurries such as paddy and wheat grass, from then on start non-wood pulp and starch kind with other and join and copy medium-to-high grade paper and replace wood pulp papermaking.By 1956, China built up paper industry covering extensive fields substantially.To nineteen ninety, the non-wood pulp production capacity in the whole nation accounts for 84% of primary paper pulp, and only Shanghai papermaking company just has 50 kinds to enter international market, has 24 products to obtain country and ministerial level quality product.Non-wood pulp paper making raw material enriches, and the paper sheet stiffness of manufacturing paper with pulp is good, transparency is low, cost performance is high, degradability is good.Non-wood pulp based on agricultural crop straw replaces wood pulp papermaking, and can conserve forests trees, prevents erosion, protecting ecology climatic environment.Applicable China has a large population in a small area, and lacks the fundamental realities of the country of soil timber resources.
In the early days of foundation, China has passed by the papermaking road for development of " taking grass fiber as main raw material ".To the later stage eighties in last century, the non-wood pulp small paper mill of China develops into into ten thousand, and the cultural material paper using of the people is solved substantially.But a large amount of paper-making effluents has directly entered rivers, severe contamination water environment." Cultural Revolution " terminate after a thousand things wait to be done, whole party's work centre shifts to economic construction.Paper industry also puts on the agenda pollution administration, defines upsurge of going abroad on a tour of investigation, and has taken back " traditional alkali collection+wastewater biochemical process → qualified discharge " pattern of American-European countries's wood pulp papermaking large-scale production and complete pollution administration.This steps into world's rank of advanced units for China's wood pulp papermaking, has walked many detours less.But non-wood pulp papermaking just follows the wind and indiscriminately imitates under the silicon not removing black liquor, indiscriminately imitate other wood pulp tradition alkali collection+wastewater biochemical and be processed into cooking technique and but can't resolve pollution problem for a long time, cause the non-wood pulp papermaking of China over head and ears by among the disaster of repeatedly eliminating.The non-wood pulp production capacity of China is several times eliminated, and only accounts for 10% of primary paper pulp to atrophy in 2010 to production capacity.To arrive now, the non-wood pulp field of China except extremely indivedual as spring woods paper industry with the black liquor production composite fertilizer of pulping with ammonium sulfite method, with the rough slurry Production and Packaging paper do not bleached and toilet paper without the need to outside indiscriminately imitating, represent the vast soda pulping process chlorine bleach papermaking enterprise in non-wood pulp field, all to be eliminated down indiscriminately imitating, to cause the extinction in the non-wood pulp field of China.The historical lessons indiscriminately imitated are very painful, and the non-wood pulp papermaking saving China is imperative.
Non-wood papermaking raw material is siliceous many, many containing heteroproteose cell, as the silica in straw raw material and heteroproteose cell content high especially, account for 11% ~ 15% and 54% of material composition respectively, and only account for 35% ~ 39% for the cellulose components of pulping and paper-making, lignin accounts for 9.5% ~ 14%.In wheat straw raw material, silica and heteroproteose cell content are also very high, and account for 6% ~ 8% and 38% of material composition respectively, cellulose accounts for 40% ~ 44%, and lignin accounts for 20% ~ 23%.In order to while boiling and bleaching delignification, silica, heteroproteose cell can be removed, cellulose can be protected again from damage, therefore have selected soda pulping process chlorine bleach technique.Characteristics such as so it are siliceous many to create non-pulp black liquor, and viscosity is high, calorific value is low, cause traditional alkali collection and evaporate the black liquor silicon obstacle such as easy fouling, the dead bed course of burning generation; The heteroproteose cell that non-wood pulp chlorine bleach generation microorganism does not engulf and the chlorine bleach such as AOX, bioxin that wastewater biochemical process is not removed pollute.Wood raw material for needlebush, silica and heteroproteose cell content extremely low, only account for 0.25% ~ 0.5% and 1.5% ~ 1.8% of material composition, cellulose accounts for 57% ~ 62%, and lignin accounts for 27% ~ 35%.Therefore wood raw material generally takes sulfate pulp-making without the bleaching of chlorine element, neither produces black liquor silicon obstacle, does not also produce chlorine bleach and pollutes.
Long-term production practices prove, the traditional alkali collection indiscriminately imitated and wastewater biochemical treatment technology be not suitable for non-wood pulp siliceous many, containing the many characteristics of heteroproteose cell, can't resolve black liquor silicon obstacle problem and chlorine bleach pollution problem.Spurt into stove burning when the traditional alkali collection indiscriminately imitated can not be concentrated to 60% ~ 65% through vacuum vaporation system non-pulp black liquor as pulp black liquor, press through vapours in not producing and do not generate electricity, just cause the quagmire of non-pulp black liquor Biomass Industry.But the person of indiscriminately imitating copies mechanically and applies indiscriminately wood pulp alkali and reclaims net value Theory of Combustion with turning a blind eye to, firmly wheat straw black liquor is concentrated to high as far as possible 43% from vacuum vaporation system and goes out effect, more directly contact evaporation and concentration through flue gas and spurt into stove to 50% high as far as possible limting concentration.Enter furnace black liquid caloric value 5740 kilojoule per kilogram, 1000 kilojoule per kilogram lower than black liquor normal combustion caloric value, so Steam Heating air intake must be used, even need to use fuel Heating burner hearth.More because non-pulp black liquor is siliceous many, when wheat straw black liquor evaporation and concentration to 35% time just cause obvious black liquor silicon obstacle.Although high dense effect black liquor evaporation and concentration to 43% limting concentration, can continue " boiling " as under the temperature conditions of about 120 DEG C reluctantly, organic matter continues to absorb Na
2o(alkali), cause black liquor Na
2siO
3(sodium metasilicate) loses part Na
2o forms the higher Na of viscosity
2onSiO
2(waterglass colloid), causes easy fouling.Evaporator heat transfer coefficient suddenly reduces, and considerably reduces the generation of indirect steam.Follow-up each low concentrated evaporator is caused to cause evaporability to decline because of short indirect steam heat energy: the evaporation efficiency of IV effect vapo(u)rization system then drops to 0.6 kg water/kilogram vapour by 2.8 kg water/kilogram vapour, and evaporation intensity is then by when dropping to 3 kg/m 2 when 18 kg/m 2.And then directly contact the limting concentration of evaporation and concentration to 50% with flue gas, the CO in flue gas
2(carbon dioxide) and the Na in black liquor waterglass colloid
2o(alkali) reaction formation Na
2cO
3(sodium carbonate), has displaced SiO
2(silica, mud), but the mud cannot removed wherein because black liquid consistency, viscosity are very high.Stove spurted into by black liquor, and organic matter is burnt by pyrolytic, flows out after inorganic matter (sodium carbonate) is melted from body of heater chute mouth.But replaced mud out but can not be melted outflow from black liquor, just cause the dead bed course of burning.Black liquor silicon obstacle is not eliminated, so the traditional alkali collection energy consumption indiscriminately imitated is high, efficiency is low because the technology indiscriminately imitated cannot change non-wood pulp characteristics of black liquors.Not only do not produce middle pressure steam and do not generate electricity, do not produce economic benefit, and reclaim 1 ton of alkali, except the artificial of normal consumption 1 ton of lime raw material and more than 1000 yuan and cost of equipment, the 1000 degree of electricity drive equipment that also will increase consumption run, 1.5 coals that increase consumption produce the heat that low-pressure steam supplements black liquor vaporizing and burning, and increase consumption 0.3 ton of dead bed course of rustingization, and the 0.3 ton of alkali that increases consumption supplements alkali loss.Add the cost consumption of the raw material of slurrying department, artificial, equipment and energy source and power, cause self-control 1 ton of Straw Pulp cost increase to more than 4000 yuan, exceed the import pulp market price.More bad is the wastewater biochemical process of indiscriminately imitating, microorganism does not engulf " huge monster " heteroproteose cell, does not eliminate AOX with chlorine bleach pollutants such as bioxin, does not realize qualified discharge.The non-wood pulp papermaking enterprise causing China batchs of has to turn to purchase wood pulp processing papermaking in the hope of the means of livelihood, causes the extinction of the non-wood pulp field of papermaking of China.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, a kind of non-wood pulp low-carbon (LC) papermaking cogeneration system is provided, this papermaking cogeneration system by comprehensive utilization agricultural crop straw realize slurrying, gas processed, generating and papermaking, and utilize combustion gas, flue gas realization secondary silica removal is carried out to the black liquor produced in pulping process.
The utility model object realizes being completed by following technical scheme:
A kind of non-wood pulp low-carbon (LC) papermaking cogeneration system, it is characterized in that described low-carbon (LC) papermaking cogeneration system comprises stalk preparation station, slurrying subsystem, papermaking subsystem and alkali collection power generation sub-system, described slurrying subsystem comprises the slip house system be connected with described stalk preparation station; Described papermaking subsystem comprises paper machine room system; Described alkali collection power generation sub-system comprises the one-level connected successively and removes system on silicon, secondary except system on silicon, vapo(u)rization system, black liquor jeting furnace and Turbo-generator Set, and the black liquor charging aperture that wherein said one-level removes system on silicon is connected with the black liquid outlet of described slip house system.
Described papermaking cogeneration system also comprises combustion gas generation subsystem, and described combustion gas generation subsystem is made up of gas producer, and its charging aperture is connected with described stalk preparation station, and its gas outlet and described one-level are removed system on silicon and be connected.
Described papermaking cogeneration system also comprises straw pulp alkali recovery boiler power generation sub-system, described straw pulp alkali recovery boiler power generation sub-system is made up of the straw power generation boiler connected successively and Turbo-generator Set, the charging aperture of described straw power generation boiler is connected with stalk preparation station, and exhanst gas outlet and the described one-level of described straw power generation boiler are removed system on silicon and be connected.
Described slip house system comprises the cooking section device, washing room, bolting house device, tri-stage bleaching device and the rear wash mill of drift that connect successively, described cooking section device charging aperture connects described stalk preparation station, washing room is sequentially connected with wash engine by #1 press master, #2 press master, and after described drift, wash mill grout outlet connects described paper machine room system.
Described tri-stage bleaching device comprises the Chlorinated Bleaching section apparatus, alkali treatment section apparatus and the post-bleach section apparatus that connect successively.
The black liquid outlet of two described press masters and described one-level silica removal system connectivity.
Described one-level is removed system on silicon and is made up of the cyclone-shower-evaporator connected successively, helical surface condenser and mud layer filtering-depositing device; Described cyclone-shower-evaporator fuel gas inlet is communicated with the gas outlet of gas producer, described cyclone-shower-evaporator gas outlet is communicated with the fuel gas inlet of described helical surface condenser, described helical surface condenser gas outlet is communicated with the fuel gas inlet of described black liquor jeting furnace, and described mud layer filtering-depositing device black liquid outlet and flue gas secondary remove the black liquor inlet communication of system on silicon.
Described secondary removes system on silicon and is made up of the cyclone-shower-evaporator connected successively, helical surface condenser and mud layer filtering-depositing device; Described cyclonic spray tower gas approach is connected with the exhanst gas outlet of described black liquor jeting furnace; The black liquor inlet communication of described mud layer filtering-depositing device black liquid outlet and described vapo(u)rization system.
Described cyclone-shower-evaporator is a cylinder of steel, spray thrower and destroyer is coaxially installed with at the positive top of described cylinder of steel, and offer one at the upper neck place of described cylinder of steel in the smoke-intake pipe of diffused, and in described cylinder of steel outside lower section tangential direction offer a pipe; Wherein said spray thrower is communicated with by circulation pipe with bottom cylinder of steel.
Described mud layer filtering-depositing device is a drum ladle, and described drum ladle top has crest of weir intake chamber and screen pack, lower weld have cone, bottom has liquid outlet; Described cone bottom is provided with has sewage draining exit into water reflector, bottom, is also provided with inlet below the described water inlet reflector in described cone.
The utility model has the advantages that, low-carbon (LC) papermaking cogeneration system take agricultural crop straw as raw material, and papermaking cost is low, can remove the silicon taken to from raw material in black liquor, realize the zero-emission of non-wood pulp clean paper making, and can produce clean energy resource.
Accompanying drawing explanation
Fig. 1 is the non-wood pulp low-carbon (LC) papermaking cogeneration system schematic diagram adopting combustion gas-flue gas secondary silicon removing process in the utility model;
Fig. 2 is the non-wood pulp low-carbon (LC) papermaking cogeneration system schematic diagram adopting flue gas-flue gas secondary silicon removing process in the utility model;
Fig. 3 is one-level or secondary silica removal system process figure in the utility model;
Fig. 4 is the process chart of papermaking cogeneration system in the utility model;
Fig. 5 is cyclone-shower-evaporator structural representation in the utility model;
Fig. 6 is mud layer filtering-depositing device structural representation in the utility model.
Detailed description of the invention
Feature of the present utility model and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technical staff of the same trade:
Be respectively as marked 1-16 in Fig. 1-6, figure: spray thrower 1, profit wall black liquor 2, destroyer 3, air inlet trunnion 4, cylinder of steel 5, circulation pipe 6, pipe 7, crest of weir intake chamber 8, screen pack 9, clear water pipe 10, water inlet reflector 11, inlet 12, liquid outlet 13, sewage draining exit 14, cone 15, drum ladle 16.
Embodiment: the present embodiment relates to a kind of non-wood pulp low-carbon (LC) papermaking cogeneration system, is specifically related to the integrated gas processed of comprehensive utilization agricultural crop straw, slurrying, generating and papermaking; Combustion gas, flue gas, to key technology and the equipment such as purification and waste heat recovery of black liquor silicon removing and combustion gas, flue gas, are set up the non-wood pulp thermoelectricity paper co-feeding system that generating scale is greater than 10 megawatts, are realized the zero-emission of non-wood pulp clean paper making.
As shown in Figure 1, papermaking cogeneration system in the present embodiment is based on the straw fiber raw material soda pulping process papermaking such as universal rice and wheat straw in typical non-wood pulp papermaking, comprise stalk preparation station, combustion gas generation subsystem, slurrying subsystem, papermaking subsystem and alkali collection power generation sub-system, wherein, combustion gas generation subsystem is made up of gas producer, its charging aperture is connected with stalk preparation station, and its gas outlet and one-level are removed system on silicon and be connected; Slurrying subsystem comprises the slip house system be connected with stalk preparation station; Papermaking subsystem comprises paper machine room system; Alkali collection power generation sub-system comprises the one-level that connects successively except system on silicon, secondary are except system on silicon, vapo(u)rization system, black liquor jeting furnace and Turbo-generator Set, and wherein one-level is connected with the black liquid outlet of slip house system except the charging aperture of system on silicon.
As shown in Fig. 1,4, stalk preparation station is used for providing the stalk forages (such as maize straw) such as paddy and wheat grass to combustion gas generation subsystem and pulping and paper-making subsystem, straw raw material contains the cellulose of 35% ~ 39%, the lignin of 9% ~ 14%, the heteroproteose cell of 54% and the silica (SiO of 11% ~ 14%
2); Wheat straw raw material contains the cellulose of 40% ~ 44%, the lignin of 20% ~ 23%, the heteroproteose cell of 38% and the silica (SiO of 6% ~ 8%
2).
As shown in Fig. 1,3,4, combustion gas generation subsystem is a gas producer, and its charging aperture is connected with stalk preparation station, after obtaining the agricultural wastes such as maize straw to stalk preparation station, stalk thermochemical study in gas producer becomes biological flue gas, and reclaims plant ash potash fertilizer; The biological flue gas produced carries out combustion-supporting for being supplied to one-level except the black liquor jeting furnace in system on silicon and limestone kiln, incinerator, and combustion gas more than needed is then sold to society by air supply system.
As shown in Fig. 1,4, slip house system comprises the cooking section device, #2 press master, #1 press master, wash engine, bolting house device, tri-stage bleaching device and the rear wash mill of drift that connect successively.Wherein:
A () cooking section device charging aperture connects stalk preparation station, will from stalk preparation station through cut the stalk forage such as rice wheat straw of choosing processing, with the supplementary alkali (sodium hydroxide solution) bought from market with carry out boiling from the white liquid (sodium hydroxide solution) that caustic room is produced and make slurry; Rice straw pulp boiling alkali NaOH(NaOH) 10% ~ 12%, C
14h
8o
2(anthraquinone) 0.03%, liquor ratio 3.6; Straw Pulp boiling alkali NaOH 14% ~ 15%, anthraquinone 0.03%, liquor ratio 3.6; Low-pressure steam boiling delignification through reclaiming from Turbo-generator Set produces slurry, boiling maximum pressure 0.6 MPa, reaction equation: lignin (comprising heteroproteose cell)+alkali → alkali lignin, produces the black liquor being dissolved in water; Silica in straw fiber raw material and alkali (NaOH) react and generate black liquor composition sodium metasilicate (Na
2siO
3), reaction equation: SiO
2+ 2NaOH → Na
2siO
3+ H
2o;
B () #2 press master, #1 press master and wash engine are connected into " one continuous line " adverse current pulp washing system, the slurry produced through aforementioned cooking section boiling extracts black liquor through washing through twice press master and wash engine counter flow in series, retain paper pulp, clean slurry through screening, bleaching, complete soda pulping process.Concrete steps are: wash engine is only the hot water pulp washing of the evaporation foul condensate replacement adverse current one section of 80 mg/litre with COD, diffusion and replacement one section of black liquor; The hot water pulp washing of adverse current two sections is replaced, diffusion and replacement two sections of black liquor with the alkali treatment sewage of heating; With one, two section of black liquor countercurrent washing third and fourth, five sections of slurry diffusion and replacement black liquor; Extract adverse current one to five section of pulp washing black liquor, send #1 press master to dilute outlet slurry; Slurry following current enters wash engine adverse current the 6th section, extracts latter end black liquor, send #2 press master to dilute outlet slurry; Slurry following current enters #1 press master, through diffusion, displacement, extruding, extracts the countercurrent washing black liquor from wash engine to press master; The countercurrent washing black liquor extracted by #1 press master mixes with the magma black liquor that #2 press master extracts sends into one-level except in system on silicon; " one continuous line " adverse current washs the wheat straw black liquid consistency that method is extracted, and rise to 10-12% by 8% of traditional alkali collection, extraction rate of black liquor rises to more than 95% by 80% of traditional alkali collection; Cleanliness 0.04g/L is washed and starched in outlet, has exceeded pulp black liquor, has met potcher and enter to starch requirement;
C () bolting house device comprises bolting house and mud layer filter, namely slurry is being removed after black liquor through washing room, through the purification of bolting house device, removes the impurity such as silt, screenings in slurry, and enters tri-stage bleaching device and bleach;
D () tri-stage bleaching device comprises the Chlorinated Bleaching section apparatus, alkali treatment section apparatus and the post-bleach section apparatus that connect successively, wherein, the Chlorinated Bleaching section of tri-stage bleaching, with bleaching by chlorine gas slurry, extracts the bleaching effluent of chloride containing lignin and hydrochloric acid; Alkali treatment section, with sodium hydroxide lye bleaching slurry dissolved lignin, is extracted containing alkali lignin bleaching effluent, sends pulp grinder displacement black liquor to laundry, burns reclaim alkali finally by black liquor jeting furnace; Post-bleach section, with calcium hypochlorite bleaching liquor bleaching slurry, produces the bleaching effluent containing oxylignin and calcium chloride; Chlorinated Bleaching section and post-bleach section slurry, produce chlorine bleach sewage; Chlorine is taked to reclaim burning method for chlorine bleach sewage, namely, through lime slaking machine, lime is added to acid chlorine bleach sewage in advance, hydrochloric acid and lime reaction form calcium chloride, waste water pH value rises to pH10 by pH3, chlorine bleach concentration of wastewater 1% after alkalization process, 40% is concentrated to via multi-effect evaporation system, spray into swinging incinerator, through biomass clean gas-fired combustion-supporting, dry, high temperature incineration decomposes, roasting becomes anhydrous calcium chloride (product), and burning method eliminates organochlorine contamination, and discharge of wastewater is zero;
E wash mill after () drift: if washing is unclean after non-pulp bleaching, the heteroproteose cell do not removed will affect drainage, applying glue, even causes paper machine to stick with paste the disconnected paper of net; The lignin do not removed can cause the color reversion brightness reversion of paper; Therefore list the rear wash mill of drift in this flow process, slurry after clear water countercurrent washing drift, produces waste wash liquor.These unnecessary waste water: (1) is recycling in 1. bolting house purification slurry, and the waste water of purification slurry removes the impurity such as silt, screenings through mud layer filter, becomes clear water recycling; 2. wet method boiling is sent to be recycling in washing forage; (2) cascade utilization is in bleached pulp delignification: 1. displacement-alkali processing section slurry is containing the alkali treatment sewage of alkali lignin, send straw pulp alkali collection after heating, as the cleaning solution of wash engine adverse current second segment, and countercurrent washing slurry, displacement black liquor; 2. the chlorine bleach sewage of Chlorinated Bleaching section chloride containing lignin, hydrogen chloride (hydrochloric acid) is replaced; Displacement post-bleach section is containing the chlorine bleach sewage of oxylignin, calcium chloride; The whole cascade utilization of bleaching effluent, eliminate intermediate water of papermaking, discharge is zero.
As shown in Fig. 1,4, paper machine room system is used for papermaking, and slurry enters paper machine room system after the process of slurrying workshop system, and slurry, through making beating, condiment, is diluted to the suspension of the water of 300 ~ 400:1 and fiber, filler, sizing material; Approach flow is formed in the process of page, along with large quantity of moisture leaches through copper mesh, produces plain boiled water; Containing the enriched water that suspended matter is more before long mesh paper making machine suction box, can be used as the use of copy paper diluted pulp; Containing rare plain boiled water that suspended matter is less after suction box, become unnecessary waste water.Traditional Sewage treatment technology, reclaims clear water through the precipitation method, filtration method or By Bubble-floating Method from waste water, but cannot reclaim the paper making raw materials such as fiber, filler and sizing material wherein.The suspended matters such as the fiber in rare plain boiled water, filler and sizing material become the mud of contaminated soil environment after being flocculated agent cohesion.Low-carbon (LC) paper-making zero discharge white water recycle technology, in rare plain boiled water, supplement a small amount of paper-makers' alum aluminum sulfate, the colloid of the strong positive charge of hydrolysis generating strap, makes positive charge on the impurity band such as sizing material, filler, by the absorption of electronegative fiber surface, cohesion and precipitation, form colloid " mud layer ".Thereafter rare plain boiled water, filters through " mud layer ", and moisture penetration filter course reclaims clear water.Rare plain boiled water then because losing the moisture of the overwhelming majority, becomes callable enriched water, for diluted pulp.Fubril wherein to improve formation of sheet improve quality cause close important.In the white water recycle device of such as Fig. 4, rare plain boiled water enters, and clear water, enriched water go out.By the whole recycle and reuse of plain boiled water composition that paper of manufacturing paper with pulp produces, eliminate sludge pollution.The water consumption of paper per ton of making to manufacture paper with pulp is specified by discharging standards can qualified discharge 20 tons, is zero through cycling utilization of wastewater discharge.
As shown in Fig. 1,3,4,5,6, alkali collection power generation sub-system comprises the one-level that connects successively except system on silicon, secondary are except system on silicon, vapo(u)rization system, black liquor jeting furnace and Turbo-generator Set, and wherein one-level is connected with the black liquid outlet of slip house system except the charging aperture of system on silicon;
A () one-level is removed system on silicon and is made up of the cyclone-shower-evaporator connected successively, helical surface condenser and mud layer filtering-depositing device, the biological flue gas entered in cyclone-shower-evaporator comes from gas producer;
As shown in Figure 5, cyclone-shower-evaporator is a cylinder of steel 5, be coaxially installed with spray thrower 1 and destroyer 3 at the positive top of cylinder of steel 5, and offer one at the upper neck place of cylinder of steel 5 in the air inlet trunnion 4 of diffused, and in cylinder of steel 5 outside lower section tangential direction offer a pipe 7; Wherein, spray thrower 1 is communicated with by circulation pipe 6 with bottom cylinder of steel 5; Sidewall has profit wall black liquor 2;
As shown in Figure 6, mud layer filtering-depositing device is a drum ladle 16, and drum ladle 16 top has crest of weir intake chamber 8 and screen pack 9, lower weld have cone 15, bottom has liquid outlet 13, and liquid outlet 13 is connected with crest of weir intake chamber 8 through clear water pipe 10; Cone 15 bottom is provided with has sewage draining exit 14 into water reflector 11, bottom, is also provided with inlet 12 below the water inlet reflector 11 in cone 15;
The wheat straw black liquor that aforementioned " one continuous line " adverse current pulp washing system extracts, original pH is more than 12, and black liquor enters the cyclone-shower-evaporator of one-level except system on silicon, sprays intensive black liquor drop wash away, wash high-temperature flue gas combustion gas or smoke inlet place.Fuel gas temperature from 200 DEG C below rapid drawdown to 100 DEG C; Flue-gas temperature, below more than 400 DEG C rapid drawdowns to 100 DEG C, eliminates and causes the temperature conditions that combustion explosion occurs the reaction of black liquor thermal cracking gasification.Flue gas is shunk by cooling suddenly, cause black liquor vacuum atomizing effect, increase the specific area with biological flue gas or the direct contact lysis carbon dioxide of biological flue gas, biological flue gas or biological flue gas whirlwind increase again the chance of profit wall black liquor and the direct contact lysis of carbon dioxide, be conducive to black liquor absorbing carbon dioxide and heat, strengthen Solubilities of Carbon Dioxide.Be dissolved in the carbon dioxide (CO of black liquor
2) and moisture (H
2o) reaction produces carbonic acid (H
2cO
3), reaction equation CO
2+ H
2o → H
2cO
3, reduce the pH value of black liquor.Carbonic acid and sodium metasilicate (Na
2siO
3) reaction generation sodium carbonate (Na
2cO
3) recruit, produce silica (SiO
2) and water, fold silica.Reaction equation H
2cO
3+ Na
2siO
3→ Na
2cO
3+ SiO
2↓+H
2o.When black liquor pH value is reduced to 10.5, start to produce precipitation of silica thing.When pH value has been reduced to 10.3, go out the black liquor of cyclone-shower-evaporator, become the mixed liquor with silica.Be mixed into the black liquor of silica, send into mud layer filtering-depositing device water inlet reflector 11 and reduce flow velocity, filter and clarification through mud layer, remove silica and become clear liquid.It is stand-by that clear liquid imports liquid storage area by crest of weir intake chamber 8 and clear water pipe 10.The silica mud precipitated by mud layer filtering area, discharges through sewage draining exit 14.Complete one-level silica removal, silica removal rate 85%, after one-level silica removal, wheat straw black liquor silicon content is reduced to leaf wood black liquor level.
B () secondary removes system on silicon and is made up of the cyclone-shower-evaporator connected successively, helical surface condenser and mud layer filtering-depositing device, black liquor in cyclone-shower-evaporator comes from one-level except the mud layer filtering-depositing device in system on silicon, helical surface condenser is for cooling black liquor, and the gas approach in cyclone-shower-evaporator is connected with the exhanst gas outlet of black liquor jeting furnace;
Through one-level except the wheat straw black liquor of system on silicon silicon of also having a surplus can remove, therefore send secondary to remove system on silicon and continue silica removal; Secondary removes system on silicon and takes the biological flue gas silica removal of black liquor jeting furnace.Secondary desilication technique is identical with one-level silica removal with equipment, and something in common is not that black liquor pH value continues to decline.When wheat straw black liquor pH is reduced to 9.8, silica removal rate 97% no longer rises.Even if pH value drops to 9.5, silica removal rate is still 97%, so secondary silica removal is saturated silica removal.Effect of the saturated silica removal of I and II also enumerates the purification of combustion gas, flue gas and the Waste Heat Recovery to combustion gas, flue gas, really serves multiple and without the need to increasing energy consumption and investment; All non-pulp black liquors comprise the highest straw black liquor of silicon content (saturated silica removal rate 97.7%), and the silicon content after supersaturation silica removal, all lower than needlebush black liquor, thoroughly eliminates black liquor silicon obstacle.
C () vapo(u)rization system is specially multi-effect evaporation system, the wheat straw black liquor after silica removal send multi-effect evaporation system to concentrate, and evaporation intensity brings up to the 5 kg water/kilogram vapour of sextuple-effect evaporation system by the average 1 kg water/kilogram vapour of traditional alkali collection four-effect evaporator system.Evaporate effect concentration to rise to 65% by 50% of traditional alkali collection and spurt into stove.Enter furnace black liquid caloric value and rise to 8250 kilojoule per kilogram by 5740 kilojoule per kilogram of traditional alkali collection.
(d) black liquor jeting furnace: the biological flue gas that gas producer produces passes into black liquor jeting furnace, with the biological flue gas mixed combustion of the thermal evaporation generation of black liquor, produce the burner hearth high temperature of more than 1200 DEG C, produce the superheated steam of 3.82 MPas, send Turbo-generator Set to generate electricity.
(e) Turbo-generator Set: produce superheated steam through black liquor jeting furnace and send Turbo-generator Set to generate electricity; Power networking, to enterprise, powers to society.Reclaim 170 DEG C of low-pressure steams after generating, 1. supply slurrying cooking section, will the stalk boiling form slurry such as the rice wheat straw of white liquid and supplementary alkali be added; 2. supply straw pulp alkali collection multi-effect evaporation system, (rare) black liquor vaporizing is condensed into concentrated black liquid, spurt into stove burning, reclaim in alkali, production and press superheated steam generation; 3. supply straw pulp chlorine and reclaim multi-effect evaporation system, evaporation and concentration goes out the chloro-bleaching effluents of lime slaking machine, sprays into incinerator and burns decomposition, reclaim anhydrous calcium chloride (product); 4. supply paper machine room and dry page, produce paper; 5. supply assembly room and produce furniture, commodity.6. residue steam, sells to society, steam supply heat supply.
The black digestion liquid extracted from aforementioned " one continuous line " adverse current pulp washing system and the chlorine bleach sewage extracted from tri-stage bleaching device, respectively through the multi-effect evaporation system evaporation and concentration that straw pulp alkali collection and chlorine reclaim, produce indirect steam.Go out the indirect steam of condenser, form the foul condensate containing COD80mg/L.Evaporation foul condensate is utilized to replace one section of black liquor of hot water 1. countercurrent washing wash engine adverse current first paragraph slurry displacement; The two sections of black liquor washing wash engine adverse current second segment slurry displacement with the alkali treatment counter-current of sewage of heating mix, countercurrent washing three, four, five sections of slurries, extract pulp washing black liquor from the 5th section; 2. the rare white liquid of white clay displacement is cleaned.The whole cascade utilization of foul condensate, discharge is zero.
It should be noted that, as shown in Figure 2,3, papermaking cogeneration system also can adopt secondary smoke to carry out silica removal, comprise boiler power generation sub-system, this boiler power generation sub-system is made up of the straw power generation boiler connected successively and Turbo-generator Set, the charging aperture of straw power generation boiler is connected with stalk preparation station, exhanst gas outlet and the one-level of straw power generation boiler are removed system on silicon and are connected, namely, at straw power generation boiler, the flue gas of generation is passed into one-level except in the cyclone-shower-evaporator in system on silicon, flue gas within it role is identical with biological flue gas; Wherein, black liquor jeting furnace can directly select wood pulp alkali recovery furnace existing on market to replace, and need not mixed combustion stalk-black liquor biological flue gas, saves research and development, the time manufacturing new equipment and expense;
In the present embodiment, firm oven-fresh straw biological fuel gas temperature 100 ~ 200 DEG C, carbon dioxide accounts for gas component 16%, is applicable to very much directly contacting silica removal to the thin phenol water of spray atomizing.Combustion gas is through one-level except system on silicon, and the silica of carbon dioxide replacement black liquor sodium metasilicate, had both eliminated the silica of in black liquor 85%.Also purify combustion gas simultaneously, eliminate carbon dioxide wherein, tar, charcoal dirt and moisture., there is running temperature and charing material fused junction Jiao blocking ash hole fault just occur more than 850 DEG C in traditional stalk gasifier.Enterprise suffers from and can not find solution, running temperature have to be controlled within 800 DEG C.Miss the best opportunity of carrying out oxidation-reduction reaction in 800 DEG C ~ 1000 DEG C temperature atmosphere.Cause charing material to be discharged as plant ash, waste the carbon accounting for stalk 30%, Straw Gas rate is only 70%.This gasifying process does not produce the straw fuel gas generator of melting coking according to the invention of black liquor jeting furnace black liquor thermochemical study principle.The charing material (C) that melting coking should have occur, absorb more than 1000 DEG C oxidation reaction heats, with carbon dioxide (CO in anoxic atmosphere
2) and steam (H
2o) there is reduction reaction, generate carbon monoxide (CO) and hydrogen (H
2): 2C+CO
2+ H
2o=3CO+H
2; Charing material more than needed produces heat of high temperature through oxidation reaction, meets needed for reduction reaction, eliminates melting coking.So the calorific value of straw fuel gas, just rise to 8500 kilojoules/rice 3 from the 6000 kilojoules/rice 3 of traditional gasification furnace.Remove carbon dioxide wherein through removing system on silicon and remove combustion gas moisture from cooler again, fuel gases calorific value has just risen to 10000 kilojoules/rice 3.Straw biomass combustion gas is sent black liquor jeting furnace and black liquor mixed combustion to improve fire box temperature and is produced middle pressure steam and generate electricity.Black liquor removes the saturated silica removal of system on silicon through black liquor jeting furnace flue gas secondary again, and comprehensive silica removal rate 97%, revolutionizes the black liquor silicon obstacle characteristics such as viscosity is high, calorific value is low.
Non-pulp black liquor is through combustion gas-flue gas or flue gas-saturated silica removal of flue gas carbonating, black liquor is again when multi-effect evaporation system evaporation and concentration, evaporation efficiency imitates vapo(u)rization system average 1 kg water/kilogram vapour by traditional alkali collection IV, rises to the 5 kg water/kilogram vapour of VI effect vapo(u)rization system.Go out to imitate the straw pulp black liquor jeting furnace that black liquor send various scale, mixed combustion stalk-black liquor biological fuel gas produces 1200 DEG C of burner hearth high temperature.Wheat straw concentrated black liquid caloric value 8250 kilojoule per kilogram, straw biomass combustion gas caloric value 8725 kilojoules/rice 3.Produce the burner hearth heat of same size straw pulp tradition black liquor jeting furnace more than 3 times, or produce the burner hearth heat of same size pulp black liquor jeting furnace more than 2 times.Straw pulp alkali collection black liquor jeting furnace presses through vapours and send Turbo-generator Set to generate electricity in producing, generated energy be also wood pulp alkali return more than 2 times.Power networking, to enterprise, powers to society.The low-pressure steam of 0.8 MPa is reclaimed, to enterprise, to social steam supply, heat supply after generating.Therefore, the economic benefit of non-wood pulp papermaking can exceed wood pulp papermaking.The thermal evaporation burning of black liquor organic matter, inorganic matter is NaCO by pyrolytic
3(sodium carbonate) fused mass, is dissolved by rare white liquid after coming out of the stove, and forms green liquor (sodium carbonate liquor).Green liquor adds lime (GaO, calcium oxide) through caustic room, generates NaHO (NaOH), reclaims white liquid (sodium hydroxide solution) and discharge white clay GaCO
3(calcium carbonate), Na
2cO
3+ H
2o+GaO → 2NaHO+GaCO
3.Containing a large amount of silica impurity in the white clay of non-wood pulp tradition alkali collection, become unrenewable secondary pollution.Straw pulp alkali collection takes combustion gas, flue gas secondary silica removal, removes the silica in black liquor, and white clay is not containing silica.Wash through filter foul condensate, extract the rare white liquid containing alkali.White clay recovering process is simple, and the extra dry white wine mud supplementing lime stone in limestone kiln is sintered into new lime with biological fuel gas, eliminate white clay and pollute, discharge is zero.
Low-carbon technology burning straw-black liquor biological fuel gas, flue gas only carbonated, steam and the nitrogen of discharge.Do not discharge the atmosphere pollutions such as that flue dust of the combusts fossil energy, sulfur dioxide and nitrogen oxide, do not discharge that corrosivity stench hydrogen sulfide of timber sulfate pulp-making yet.The coproduction of non-wood pulp thermoelectricity paper replaces pulping wood papermaking with agricultural crop straw, and green lung of preserving our planet forest-tree, purifies air, and absorbs GHG carbon dioxide, discharges pure and fresh oxygen, strengthens Forestry Carbon Mitigation and the dynamics that lays the dust; To preserve our planet non-renewable fossil resource, reduce combusts fossil energy emission greenhouse atmospheric carbon dioxide.Straw-returning is taked to prohibit burning stalk in rural area.But stalk turns over after smashing and is embedded in underground under moist anaerobic environment, and stalk organic matter is through anaerobe fermentation emission greenhouse gases methane; In rice field, marsh, also can through the sub-nitrogen of denitrifying bacterium emission greenhouse gaseous oxidation in the moist earth in lake.Methane and nitrous oxide warm up the hundred times that effect is carbon dioxide.Therefore, only have the coproduction of low-carbon (LC) papermaking thermoelectricity paper to fully utilize agricultural crop straw at present, be only and reduce the scientific scheme that global warming is alleviated in greenhouse gas emission.Non-wood pulp thin phenol water is a kind of viscous aqueous solution containing colloidal silica alkali lignin, and utilize carbon dioxide in combustion gas, flue gas to black liquor silicon removing, total silica removal rate 97%, changes non-wood pulp characteristics of black liquors.Also combustion gas, flue gas have been purified simultaneously.The black liquor of high atomisation infiltrates alkali dirt, charcoal dirt, dust particle, strengthens its quality, clings the smokeshade such as PM2.5, the rate of recovery 99%.Utilize non-wood pulp thin phenol water viscosity, miniature cyclone-shower-evaporator is set and reclaims PM2.5, can the industrial pollution such as vehicle exhaust be eliminated, eliminate haze weather.So the coproduction of non-wood pulp low-carbon (LC) papermaking thermoelectricity paper is for the trees that conserve forests, non-renewable fossil resource of preserving our planet, alleviates carbon dioxide, nitrous oxide and methane isothermal chamber gas discharging, alleviates global warming; Alleviate flue dust, sulfur dioxide and the Air Pollutant Emission such as nitrogen oxide and PM2.5, the natural environment of protection human survival, has irreplaceable important function.
With refining 1 ton of slurry wheat straw pulp paper-making example, non-wood slurry low-carbon (LC) papermaking cogeneration is described below.
Store up the experience of stalk according to the whole nation, business organization's strength stores up the cost of agricultural crop straw voluntarily between 150 yuan ~ 200 yuan/ton, and Shanghai Suburb stalk stores up expense 200 yuan/ton by government subsidy.Calculate with 200 yuan/ton of high costs in this project and store up expense.
For 3 tons of Wheat Straws of slurrying, remove moisture, silt, grass bits and screenings, 1 ton of bleached pulp can be refined, extract 10 tons of black liquor (recovery rate more than 95%).Black liquor is through secondary silica removal, and evaporation and concentration send straw pulp black liquor jeting furnace to 65%, enters furnace black liquid 2.154 tons, every kilogram of biological fuel gas caloric value 8250 kilojoule entering furnace black liquid thermochemical study.For the production of 3 tons of maize straws of biological fuel gas, be prepared into gasification materiel and send industrial combustion gas producer.Biological fuel gas caloric value 10470 kilojoule of every kg corn stalk material thermochemical study.First with the biological fuel gas of 2 tons of corn stover, input black liquor jeting furnace and the mixed combustion of black liquor biological fuel gas, produce the burner hearth high temperature of more than 1200 DEG C, produce in 3.82 MPas and press through vapours, be sent to Turbo-generator Set generating 1665 degree, cost 0.12 yuan/degree.Boiling, bleaching, alkali collection, chlorine reclaim power consumption 500 degree, cost 60 yuan, and electric power more than needed is sold.The low-pressure steam 8.325 tons of 0.8 MPa is reclaimed, cost 24 yuan/ton after generating.Boiling, bleaching, alkali collection, chlorine reclaim and consume steam 3 tons, cost 72 yuan, and residue steam is sold.Biological fuel gas 1250 meter 3 is generated again, cost 0.17 yuan/meter 3 with 1 ton of maize straw.Chlorine reclaims incinerator, alkali collection limestone kiln consumes combustion gas 400 meter 3, cost 68 yuan altogether, and combustion gas more than needed is sold.Alkali recovery 85%, causticization is supplemented 0.08 ton of sodium carbonate and is prepared 0.06 ton, NaOH, cost 100 yuan.Chlorine reclaims output anhydrous calcium chloride 0.1 ton income 100 yuan, and bleaching supplements 0.08 ton, chlorine expenditure 52 yuan, cost-48 yuan.The manpower consumption of slurrying, alkali collection, cost 400 yuan; Maintenance of equipment depreciation, cost 100 yuan.Wheat straw 3 tons is stored up in slurrying, cost 600 yuan.Show that low-carbon (LC) papermaking cogeneration makes 1 ton of Straw Pulp cost 1352 yuan by oneself, more cheap than wood pulp market price 4000 yuan/ton 2648 yuan.
Non-wood pulp papermaking is that non-wood pulp and other raw materials are joined and be copied into paper.Join for Straw Pulp and other raw materials and copy 1 ton of paper, Straw Pulp 0.64 ton, cost 865 yuan; Wood pulp 0.12 ton, cost 480 yuan; Adapted sizing material, filler 0.24 ton, cost 91 yuan; Making beating, batching, copy paper, power consumption 300 degree, cost 36 yuan; Dry page and consume steam 1.3 tons, cost 31 yuan; Papermaking consumes artificial, cost 300 yuan; Equipment depreciation, cost 100 yuan.Non-wood pulp papermaking cost 1903 yuan.Compared with market paper valency 4200 yuan/ton, extra earning 2297 yuan/ton.Low-carbon (LC) papermaking cogeneration is made 1 ton of Straw Pulp and other raw materials by oneself and is joined and copy 1.563 tons of paper extra earnings 3590 yuan.In addition, low-carbon (LC) papermaking cogeneration is used for slurrying, papermaking and pollution administration except self-produced biomass energy, and combustion gas more than needed, electric power and steam are sold to society by market price, change town and country energy resource structure; Rural area personnel enter factory and work and store up stalk and also can obtain considerable income.Therefore, the non-wood pulp thermoelectricity paper coproduction pattern economic worth that 1 ton of stalk can be made to produce more than 1200 yuan.
Now 200,000 tons of slurrying scale bases to be set up generating scale 45 megawatt non-wood pulp thermoelectricity paper coproduction demonstration project, non-wood pulp low-carbon (LC) papermaking cogeneration economic benefit is described.Total system daily output biomass flue gas 8100 tons, meets the flue gas expense of daily output 9000 tons of black liquor I and II silica removals.The fume afterheat of flue gas silica removal can be used in 600 tons of moisture in evaporate black liquor, is equivalent to the energy saving 120 tons of coal equivalents day, year extra earning 0.35 hundred million yuan.Total system day generating 1,080,000 degree, reclaims low-pressure steam 5400 tons.Except meeting slurrying, papermaking and pollution administration needs, sell electric power, steam more than needed year, deduction biological fuel gas cost, extra earning 2.83 hundred million yuan.Non-wood pulp cogeneration self-control Straw Pulp cost 1352 yuan/ton; 1 ton of Straw Pulp and other raw materials are joined and are copied 1.563 paper extra earning 3590 yuan.Total system makes 200,000 tons of Straw Pulp costs 2.704 hundred million yuan by oneself, joins and copies 31.25 ten thousand tons of paper extra earnings 7.18 hundred million yuan.Local rural area is stored up stalk and is entered factory and to work income 3.738 hundred million yuan.Therefore build non-wood pulp thermoelectricity paper coproduction demonstration project year comprehensive utilization agricultural crop straw 900,000 tons of generating scale 45 megawatt, the output value 16.35 hundred million yuan, profit 10.35 hundred million yuan.1 ton of stalk produces more than 1800 yuan economic worths.This demonstrative project is estimated half a year and is built up, cost of recouping the investment half a year of going into operation.
If by China every year collectable 700,000,000 tons of agricultural crop straws be used for the coproduction of thermoelectricity paper and replace 4.5 hundred million tons of wood producing, 1.5 hundred million tons of paper pulp, produce the stalk-black liquor biological fuel gas of 2.5 hundred million tons of mark coal equivalents simultaneously, generate electricity 2,250 hundred million degree, recovered steam 11.25 hundred million tons.These paper pulp, steam and electric power resource, can in order to papermaking, or coordinate other sizing materials, filler, " bone " material is pressed into top-grade furniture and commodity, develop non-wood pulp novelty teabag, create non-wood milk products new markets.Thus be rural economy extra earning more than 8,000 hundred million yuan, just agriculture, rural areas and farmers be can support powerfully, rural urbanization, industrialization construction supported.If 700,000,000 tons of agricultural crop straws are used for cogeneration to produce paper pulp papermaking and produce biological fuel gas generating; the forest-tree of 8,300,000 hectares of can preserving our planet exempts from felling; strengthen Forestry Carbon Mitigation 800,000,000 tons, lay the dust 3,200,000,000 tons, reduce the coal resources 2.5 hundred million tons that burning is non-renewable.Conserved forests in 10 years trees 8,300 ten thousand hectares altogether, and accumulative increasing Forestry Carbon Mitigation 44,000,000,000 tons, lays the dust 1,760 hundred million tons, both can reduce greenhouse gas emission and alleviate global warming, and can eliminate haze, sandstorm again.Global environmental protection is led to contribute for implementing " Sino-U.S.'s climate change joint statement ".
Claims (10)
1. a non-wood pulp low-carbon (LC) papermaking cogeneration system, it is characterized in that described low-carbon (LC) papermaking cogeneration system comprises stalk preparation station, slurrying subsystem, papermaking subsystem and alkali collection power generation sub-system, described slurrying subsystem comprises the slip house system be connected with described stalk preparation station; Described papermaking subsystem comprises paper machine room system; Described alkali collection power generation sub-system comprises the one-level connected successively and removes system on silicon, secondary except system on silicon, vapo(u)rization system, black liquor jeting furnace and Turbo-generator Set, and the black liquor charging aperture that wherein said one-level removes system on silicon is connected with the black liquid outlet of described slip house system.
2. one according to claim 1 non-wood pulp low-carbon (LC) papermaking cogeneration system, it is characterized in that described papermaking cogeneration system also comprises combustion gas generation subsystem, described combustion gas generation subsystem is made up of gas producer, its charging aperture is connected with described stalk preparation station, and its gas outlet and described one-level are removed system on silicon and be connected.
3. one according to claim 1 non-wood pulp low-carbon (LC) papermaking cogeneration system, it is characterized in that described papermaking cogeneration system also comprises straw pulp alkali recovery boiler power generation sub-system, described straw pulp alkali recovery boiler power generation sub-system is made up of the straw power generation boiler connected successively and Turbo-generator Set, the charging aperture of described straw power generation boiler is connected with stalk preparation station, and exhanst gas outlet and the described one-level of described straw power generation boiler are removed system on silicon and be connected.
4. one according to claim 1 non-wood pulp low-carbon (LC) papermaking cogeneration system, it is characterized in that described slip house system comprises cooking section device, washing room, bolting house device, tri-stage bleaching device and the rear wash mill of drift connected successively, described cooking section device charging aperture connects described stalk preparation station, washing room is sequentially connected with wash engine by #1 press master, #2 press master, and after described drift, wash mill grout outlet connects described paper machine room system.
5. one according to claim 4 non-wood pulp low-carbon (LC) papermaking cogeneration system, is characterized in that described tri-stage bleaching device comprises Chlorinated Bleaching section apparatus, alkali treatment section apparatus and the post-bleach section apparatus connected successively.
6. one according to claim 4 non-wood pulp low-carbon (LC) papermaking cogeneration system, is characterized in that the black liquid outlet of two described press masters and described one-level silica removal system connectivity.
7. one according to claim 1 non-wood pulp low-carbon (LC) papermaking cogeneration system, is characterized in that described one-level is removed system on silicon and is made up of the cyclone-shower-evaporator connected successively, helical surface condenser and mud layer filtering-depositing device; Described cyclone-shower-evaporator fuel gas inlet is communicated with the gas outlet of gas producer, described cyclone-shower-evaporator gas outlet is communicated with the fuel gas inlet of described helical surface condenser, described helical surface condenser gas outlet is communicated with the fuel gas inlet of described black liquor jeting furnace, and described mud layer filtering-depositing device black liquid outlet and flue gas secondary remove the black liquor inlet communication of system on silicon.
8. one according to claim 1 non-wood pulp low-carbon (LC) papermaking cogeneration system, is characterized in that described secondary removes system on silicon and is made up of the cyclone-shower-evaporator connected successively, helical surface condenser and mud layer filtering-depositing device; Described cyclonic spray tower gas approach is connected with the exhanst gas outlet of described black liquor jeting furnace; The black liquor inlet communication of described mud layer filtering-depositing device black liquid outlet and described vapo(u)rization system.
9. the non-wood pulp low-carbon (LC) of the one according to claim 7 or 8 papermaking cogeneration system, it is characterized in that described cyclone-shower-evaporator is a cylinder of steel, spray thrower and destroyer is coaxially installed with at the positive top of described cylinder of steel, and offer one at the upper neck place of described cylinder of steel in the smoke-intake pipe of diffused, and in described cylinder of steel outside lower section tangential direction offer a pipe; Wherein said spray thrower is communicated with by circulation pipe with bottom cylinder of steel.
10. the non-wood pulp low-carbon (LC) of the one according to claim 7 or 8 papermaking cogeneration system, it is characterized in that described mud layer filtering-depositing device is a drum ladle, described drum ladle top has crest of weir intake chamber and screen pack, lower weld have cone, bottom has liquid outlet; Described cone bottom is provided with has sewage draining exit into water reflector, bottom, is also provided with inlet below the described water inlet reflector in described cone.
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