CN106221849A - Stalk fuel containing biomass sludge and preparation method thereof - Google Patents
Stalk fuel containing biomass sludge and preparation method thereof Download PDFInfo
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- CN106221849A CN106221849A CN201610898916.2A CN201610898916A CN106221849A CN 106221849 A CN106221849 A CN 106221849A CN 201610898916 A CN201610898916 A CN 201610898916A CN 106221849 A CN106221849 A CN 106221849A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention belongs to technical field of fuel preparation, be specifically related to a kind of stalk fuel containing biomass sludge and preparation method thereof.Stalk fuel containing biomass sludge is made up of following raw material: biomass sludge, film containing straw process supernatant and the mixture of straw, lignin, cellulose mud.The stalk fuel of the present invention takes full advantage of biomass resource and processes the debirs obtained, and has huge economic benefit and environmental benefit.In addition, the vegetable materials such as stalk particle thing are added in non-dewatered sludge, the calorific value of dehydrated sludge can be improved, owing to the Plant fiber such as stalk particle thing are blended in mud, add the frictional force in spiral pressing dehydrator of the mud after predrainage, and then spiral pressing dehydrator running frequency can be strengthened, it is effectively improved operational efficiency and the mud extraction mass dryness fraction of machine.
Description
Technical field
The invention belongs to technical field of fuel preparation, be specifically related to a kind of stalk fuel containing biomass sludge and system thereof
Preparation Method.
Background technology
Producing substantial amounts of mud in the industries such as biomass resource comprehensive utilization and papermaking, the process of these mud is usual
Including precipitation, gravity concentration, it is dehydrated, is dried.It addition, the mud being dried can be further processed.As the mode processed
One of be that mud is burned, but, burning can produce environmental pollution, particularly atmospheric pollution further.
Although biomass sludge contains large amount of organic, certain heat can be produced when burning, but these mud
Calorific value relatively low, generally between 500 kilocalories to 1000 kilocalories, the degree used as fuel can not be reached.Additionally, it is biological
Containing compositions, i.e. ash such as a large amount of aphlogistic dirts in matter sludge.The increase of content of ashes, make unit mass can
The content of combustion material reduces a lot relatively, and the calorific value of corresponding fuel reduces the most, and reduces ignition temperature, hinders combustion process
In radiant heat transfer, reduce burning velocity, wrap up coke granule, hinder oxygen to coke diffusion inside, increase machinery not exclusively
Combustion heat loss；And thermophoresis, inertial collision and flue in combustion, the condensation of afterbody heat-transfer surface, chemical reaction mistake
Cheng Zhong, increases heating surface and the dust stratification of heat-transfer surface, weares and teares and corrode, make smoke evacuation flying dust heat content increase etc..Therefore, ash is typically regarded
For the slag in biomass fuel, increase operating cost.For above-mentioned reasons, so far, not by dirt in prior art
Mud is after drying for developing the technology of fuel.
Summary of the invention
It is an object of the invention to provide a kind of stalk fuel containing biomass sludge, take full advantage of at biomass resource
The debirs that reason obtains, have huge economic benefit and environmental benefit；Invention also provides containing biomass sludge
The preparation method of stalk fuel, scientific and reasonable, simple.
Stalk fuel containing biomass sludge of the present invention, is made up of the raw material of following parts by weight:
In the described biomass sludge containing straw, the weight of straw is 10-600kg, with the weight of over dry mud per ton
Meter.
As the garbage of leftover bits and pieces when described straw is straw cutting process.
The moisture of described straw is less than 30wt%.
In described film process supernatant and the mixture of straw, straw and film process the mass ratio of supernatant is 5:1-5.
In described cellulose mud, content of cellulose is 40-60wt%, and water content is 30-50wt%, and content of ashes is 1-
10wt%.
The preparation method of the stalk fuel containing biomass sludge of the present invention, step is as follows:
(1) to be not dehydrated in biomass sludge add straw after be spirally dehydrated, containing straw after being dehydrated
Biomass sludge；
(2) in straw, add film process supernatant mix, obtain film and process supernatant and the mixture of straw；
(3) biomass sludge containing straw, film are processed supernatant and the mixture of straw, cellulose mud and lignin
After mixing, compound stalk forming, to obtain final product.
The water content not being dehydrated biomass sludge described in step (1) is 80-99wt%.
The biomass sludge mass dryness fraction containing straw described in step (1) is more than 35wt%.
In long-term working practice, the inventors discovered that, in the combustion process of biomass sludge, a small amount of ash pair
Burning has catalytic action (except quartz sand), contributes to strengthening flaming combustion and transmits with alternate energy, moreover it is possible to prevents harmful gas
Body discharges.It addition, by mixing the calorific value (combustion that can improve gained stalk fuel with the mixture of film process supernatant and straw
Burning value), add specified quantitative lignin and cellulose mud utilizes its caking property, dispersibility, sequestering raising combustibility.Thus
While avoiding biomass sludge to pollute, make full use of calorific value therein and make stalk fuel.
Described cellulose mud be three element separate after obtain rich in organic mud.The solid that lignin stock solution contains
Thing (small cellulose, i.e. pulping) adds calcium hydroxide precipitation in separating at three grades and filters squeezing, obtains cellulose mud cake；Half is fine
The solid content (small cellulose, i.e. pulping) that dimension liquid contains filters through Microfilter at Waste Water Treatment, obtains cellulose filter
Slag.After cellulose mud cake and the mixing of cellulose filtering residue, it is cellulose mud.
Described biomass sludge refers to during biomass resource comprehensively utilizes, by sewage treatment process three phases
Produce that three kinds of mud is blended, concentrate, flocculate, be dehydrated after the mud that produces, moisture content is usually 40%-65%, and Organic substance contains
Amount is high (usually 60-80%), and viscosity is 1cp-30cp.Pretreatment stage one sink pond produce preliminary sludge, biochemical treatment rank
Section second pond produce residual active sludge, the advanced treating stage three sink pond produce chemical sludge.These mud are mainly by having
The extremely complex heterogeneous body of the composition such as machine relic, microorganism, inorganic particle, colloid.It is known in the art that as mud
Solid component content and composition can be different because of raw material sources and processing mode difference, but these content and composition do not interfere with this
The enforcement of inventive technique scheme and the realization of effect of the present invention.
Described biomass sludge its key property before not being dehydrated is that moisture content is high (usually 80% to 99%), has
Machine thing content is high, and easily corruption is smelly, and granule is relatively thin, and proportion is less, jelly liquid.It is between liquid and solid it
Between concentrated thing, can transport with pump, but it be difficult to carry out solid-liquid separation by sedimentation.
Described preliminary sludge refers to that in hemicellulose liquid, float adds aluminium polychlorid by pretreatment stage and gathers
Acrylamide, at the mud that preliminary sedimentation tank (or sink pond) precipitation produces, is therefore mainly formed (fiber by wood fibre and inorganic matter
Element, hemicellulose, lignin, aluminium hydroxide, aluminum chloride), organic C (carbon) content is about 40%.
Described residual active sludge refers to the anaerobism that hemicellulose liquid occurs anaerobic reaction to produce in the biochemical treatment stage
The aerobic activated sludge that activated sludge (being sometimes referred to as " granule sludge " herein) and aerobic reaction produce, mainly by Organic substance
Composition (micropopulation, microbial metabolic products, the Organic substance that can not be degraded by microorganisms), N, P (nitrogen, phosphorus) content is higher,
Because N, P to be added in sewage disposal system, to promote the biodegradation of C.
Water reuse chemical method after described chemical sludge refers to biochemical treatment removes the dirt being difficult to be biodegradable
The mud produced during dye thing, because water purification agent to be added (main component bodied ferric sulfate) or Fenton examination in advanced treating
Agent (main component sulfur acid ferrous iron, hydrogen peroxide), to promote the chemical reaction of pollutant, so mainly being formed (hydrogen by inorganic matter
Ferrum oxide, iron sulfate, DIC).
During described film process supernatant refers to produce lignin, use " filtration of ultrafiltration organic tubular membrane " and " receive
Filter wound membrane filtration " to the separation of lignin stock solution, concentration, purification time, the organic liquid waste of generation.It is mainly characterized by organic matter and contains
Amount (in terms of humic acid) is as 1-3%, and pH value is 10 with up to less than 13, and suspension content is below 300mg/L, NaOH, Ca
(OH)2Total content is high (usually 4-10%).
Described straw moisture is less than 30wt%, such as, less than 25wt%, 20wt% or 10wt%, even lower example
As, 5wt%, 3wt% or 1wt%.Shape as straw is not particularly limited, and can be rod-short, lamellar, granular, powder, or
The combination etc. of these shapes of person.In the case of particles, its particle diameter length is less than 20mm, preferably smaller than 10mm, more preferably less than
8mm, also preferably less than 6mm, such as 5mm, 3mm etc..From the angle in straw source, it is preferably selected from corn stalk, wheat-straw, Fructus Hordei Vulgaris
One or more in stalk, corn stalk, phragmites communis stalk, Caulis et Folium Lini stem, weeds, beans straw, Cotton Stalk or potato class seedling, preferably wheat
Stalk.From the angle of comprehensive utilization of resources, as the garbage (straw light ash) of leftover bits and pieces during straw preferred straw cutting process.Excellent
Choosing, it is that particle diameter is less than the granule heterogeneous of 10mm as the garbage of leftover bits and pieces unqualified, for a long time by as waste material
Reason, even if or being recovered and be also used merely as pellet or be fertilizer for further processing, entirely without from comprehensively
Itself and biomass sludge are mixed for preparing stalk fuel by the angle utilized.Therefore, the present invention has unforeseeable effect.
The raw material of the mixture that described film processes supernatant and straw is preferably wheat stalk and film processes supernatant, matter
Amount proportioning is 5:1-5, after its wheat stalk and film process supernatant mixing and stirring, and natural drying, make to process supernatant containing film
The moisture of liquid straw is less than 30%.
Described lignin is solid-state: water content≤5%, biochemical lignin content ＞ 80%, methylol ＞ 18%, phenolic hydroxyl group
More than 1.5%, dissolubility 25g/100g water-35g/100g water under normal temperature and pressure；Before directly can also using spray drying
Liquid lignin, water content≤65%, biochemical lignin content ＞ 80%, methylol ＞ 18%, phenolic hydroxyl group is more than 1.5%.From combustion
From the point of view of material moisture content, preferably solid lignin.
Those skilled in the art respectively can form because of biomass sludge and the difference of content and suitably adjust stalk particle thing
Addition.Stalk particle thing is weight based on over dry mud per ton and carries out.This stalk particle thing dosage is according to dirt
Mud (i.e. entering the mud in modulation pond from the concentration basin) concentration in mud modulation pond calculates, and sludge concentration is exactly solids in mud
Content.Over dry mud is the solids of mud gained after the drying.
Carrying out biomass sludge before screw press is dehydrated quenched, biomass sludge flocculates, by biomass sludge with poly-
Acrylamide cationic solution (concentration be 0.05% with up to less than 0.2%) mixing, predrainage processes.About above steps
Concrete treatment conditions be that those skilled in the art determine according to actual conditions.
Mud is quenched to be carried out in quenched pond, and its effect is the mud that mixing sludge concentration tank is sent here, it is ensured that sludge dewatering
The continuous and steady operation of system；Sludge flocculation is carried out in tank, and its effect is stirring and evenly mixing medicament and mud is allowed to produce flocculation.
Preferably, use double helix concentrator that mud predrainage after flocculation is allowed to mud extraction mass dryness fraction ＞ 10%.Preferably use spiral pressure
Squeeze dewaterer and mud after predrainage is improved mass dryness fraction further, it is ensured that mud mass dryness fraction ＞ 35% that sludge dewatering system transports.
By spiral pressing dehydrator, such as single axle helical squeezing dewatering machine or double-shaft spiral squeezing dewatering machine carry out spiral
Press dewatering step.Spiral pressing dehydrator can use any spiral pressing dehydrator sold in the market.When mud extraction is done
Degree ＜ 35%, adds stalk particle thing in the quenched pond of mud, stirs 10 to 100 minutes, preferably 30 minutes mix homogeneously, add
Amount is adjusted according to mud extraction mass dryness fraction that (in over dry mud per ton, stalk particle thing weight content is 10% to 20%, such as
16%).Starting sludge dewatering delivery pump and dosing pump, mud sends into flocculation tank, enters double helix concentrator after flocculation, with
Rear entrance spiral pressing dehydrator, spiral pressing dehydrator running frequency typically requires ＞ 30Hz.
From the point of view of operational effect, stalk particle thing adds the quenched pond of mud by a certain percentage, does not affect sludge flocculation effect
Really, on double helix concentrator predrainage also without impact, it is possible to be effectively increased fiber content in mud, mud is improved at spiral
Frictional force in squeezing dewatering machine.Thus ensure that sludge dewatering system efficient stable runs, mud mass dryness fraction ＞ 35% of outward transport, it is to avoid
During handling mud, generation sewage drips and is sprinkled upon road surface effect environmental health.Stalk particle thing itself is waste material disposal, existing as carrying
High mud mass dryness fraction uses, and reduces individual processing expense, and is added in mud by stalk particle thing, improves the calorific value of mud,
Later stage mud briquetting can use as biomass fuel.
The biomass sludge mass dryness fraction obtained after screw press is dehydrated is more than 35wt%.In the prior art, spiral shell is reduced
Rotation squeezing dewatering machine running frequency improves mud extraction mass dryness fraction, does not often reach technic index 35wt%, and mass dryness fraction can only bring up to
30wt%.The biomass sludge mass dryness fraction that the method for the present invention obtains is more than 35wt%.
One sinks pond over dry mud ash 50%, second pond over dry mud ash 30%, and three sink pond over dry mud ash 70%,
Over dry biomass sludge ash 50%；Straw ash 3-7%.
Stalk fuel can be prepared as any shape.Such as, it is prepared as briquetting by compaction treatment.Specifically, biomass pressure
Block can be any shape, includes, but are not limited to strip, such as circular strip, square strip etc.；Oval spherical；Granule
Shape etc..Circular strip, because surface area is big, specification: length 40-60mm, diameter 6-10mm.
Briquetting processes and any machinery known in the art can be used to carry out.After briquetting, the bulk density of stalk fuel is excellent
Select 0.8-1.4g/cm3, further preferably 0.9-1.3g/cm3, more preferably 1.0-1.2g/cm3, most preferably 1.1g/cm3。
The low-grade heat of the stalk fuel that the present invention prepares is between 2500kcal/kg to 5000kcal/kg, preferably
3000kcal/kg to 4500kcal/kg, more preferably 3500kcal/kg to 4000kcal/kg.The ash of stalk fuel is generally controlled
System, at 5-10wt%, is preferably controlled in 5.5-9.5wt%, more preferably controls at 6-9wt%, further preferably control at 7-
8wt%.
The present invention compared with prior art, has the advantages that
The stalk fuel of the present invention takes full advantage of biomass resource and processes debirs (biomass sludge, the straw obtained
Stalk gently ash, film process supernatant, cellulose mud), there is huge economic benefit and environmental benefit.Additionally, by stalk particle thing
It is added in non-dewatered sludge Deng vegetable material, the calorific value of dehydrated sludge can be improved, owing to the Plant fiber such as stalk particle thing mix
It is combined in mud, adds the frictional force in spiral pressing dehydrator of the mud after predrainage, and then screw press can be strengthened
Dewaterer running frequency, is effectively improved operational efficiency and the mud extraction mass dryness fraction of machine.It addition, film is processed supernatant be added to straw
In grain thing, owing to film processes, supernatant viscosity is big and the content of organic matter is high, beneficially stalk particle thing compound stalk forming, further
Increase combustibility.
The fuel of the present invention also has the feature that
High fuel value: add lignin and cellulose mud and prepares for biomass fuel, utilize its caking property, dispersibility,
Sequestering, improve the dispersibility to fuel, increase heat generation rate and the utilization rate of fuel, be substantially reduced in fuel ash contains biology
Quality, reduces simultaneously and puts up a bridge and caking, improve converter life.
Loose structure: add stalk particle thing and can reduce compound type sludge fuel density, increase fuel internal capillary and
Surface area, makes sludge fuel be easier to burning.
Compactness: the biomass sludge in the present invention, containing Extracellular Polymers (mainly polysaccharide and protein etc.), has
(a small amount of clay is equivalent to the ash in biomass for the Organic substance that adsorbs with it of cenobium that in machine thing, microorganism is formed and inorganic matter
Point), form a stable dispersion system of colloid, have the strongest caking property.This is the hang-up of sludge dewatering, and for biology
Matter fuel forming, then be a kind of splendid complex adhesive.The biomass sludge of mass dryness fraction ＞ 35% (moisture content ＜ 65%) glues
Degree is 1cp-30cp.
The feature of environmental protection: film processes supernatant and contains calcium hydroxide, sodium hydroxide, containing aluminium hydroxide, chlorine in biomass sludge
Change the release of sulfur, heavy metal ion etc. in aluminum, hydrated ferric oxide., iron sulfate, as far as possible suppression combustion process, by pollutant as far as possible
It is fixed in residue, prevents noxious gas emission, particularly sour gas.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
Raw material composition is as follows:
Straw is wheat-straw, fine particulate, i.e. straw light ash.
Film process supernatant be the content of organic matter be 3%, pH value is 12, and suspension content is below 100mg/L, NaOH,
Ca(OH)2Total content 8%.
Lignin is solid-state: water content 3%, biochemical lignin content 85%, methylol 25%, phenolic hydroxyl group 5%, normal temperature and pressure
Lower dissolubility 30g/100g water.
Cellulose mud be content of cellulose be 50wt%, water content is 45wt%, and content of ashes is 5wt%.
Preparation method is as follows:
(1) to be not dehydrated in biomass sludge add stalk particle thing after be spirally dehydrated, contain after being dehydrated
The biomass sludge of stalk particle thing；
(2) in stalk particle thing, add film process supernatant mix, obtain film and process supernatant and stalk particle
The mixture of thing；
(3) biomass sludge containing stalk particle thing, film are processed supernatant and the mixture of stalk particle thing, fiber
After element mud and lignin mix, compound stalk forming, to obtain final product.
Wherein, the water content not being dehydrated biomass sludge is 94wt%, straw in the biomass sludge containing stalk particle thing
The weight of stalk particulate matter is 160kg, in terms of the weight of over dry mud per ton.
Stalk particle thing and film process supernatant mix homogeneously, and quality proportioning is 5: 2, after natural drying, make film process
The moisture of the mixture of clear liquid and stalk particle thing is maintained at about 15%.
Embodiment 2
Raw material composition is as follows:
Straw is wheat-straw, fine particulate, i.e. straw light ash.
Film process supernatant be the content of organic matter be 3%, pH value is 12, and suspension content is below 100mg/L, NaOH,
Ca(OH)2Total content 8%.
Lignin is solid-state: water content 3%, biochemical lignin content 85%, methylol 25%, phenolic hydroxyl group 5%, normal temperature and pressure
Lower dissolubility 30g/100g water.
Cellulose mud be content of cellulose be 50wt%, water content is 45wt%, and content of ashes is 5wt%.
Preparation method is with embodiment 1.
Embodiment 3
Raw material composition is as follows:
Straw is wheat-straw, fine particulate, i.e. straw light ash.
Film process supernatant be the content of organic matter be 3%, pH value is 12, and suspension content is below 100mg/L, NaOH,
Ca(OH)2Total content 8%.
Lignin is solid-state: water content 3%, biochemical lignin content 85%, methylol 25%, phenolic hydroxyl group 5%, normal temperature and pressure
Lower dissolubility 30g/100g water.
Cellulose mud be content of cellulose be 50wt%, water content is 45wt%, and content of ashes is 5wt%.
Preparation method is with embodiment 1.
Concrete operation step is as follows:
Biomass fuel proving ground: company limited's granule workshop, lattice justice circular economy industrial garden, Anhui；
Henan Derun Boiler Co., Ltd of cuber producer, model HMB series of biologic matter forming machine.
1, the quenched pond of mud: build position in sludge dewatering machine room Stall, the long 4m of specification × wide 4m × high 3.5m, surface
Diameter 1.5m circular hole is left in second floor position.
2, sludge dewatering delivery pump power 7.5kW, flow 70m3/ h, lift 22m；Cationic PAM (producer: Jiangsu richness is vast
Science and Technology Co., Ltd., the clear 3810DF of model: Rui Lishui) dosing pump power 3kW, flow 8m3/ h, lift 60m.
3, cationic PAM (polyacrylamide) dispensing slot format diameter 2m, highly 2m；Sludge flocculation tank format diameter
1.53m, highly 2.2m.
4, when mud quenched pond sludge quantity only has 15%, straw is added in right amount according to spiral pressing dehydrator mud extraction mass dryness fraction
Grain thing (wheat-straw), dosage such as table 1 dewatering technology of mud service data.After stalk particle thing has added, from sludge condensation
Mud is entered to liquid level 50% in pond to the quenched pond of mud, and opening agitator stirring 30 minutes can starting device.
5, Double helix pre-concentration machine format diameter 0.65m, length 6m；Spiral pressing dehydrator format diameter 1m, length
10m；Rubber conveyer width 0.65m, length 9m.
Table 1 dewatering technology of mud service data
6, spiral pressing dehydrator running frequency and process mud quenched pond sludge quantity relation, be shown in Table 2 device frequencies and place
Reason sludge quantity relation.
Table 2 device frequency and process sludge quantity relation
7, sludge dewatering start runs:
(1) mud operative employee checks before completing to start shooting and prepares, and controls that to open Double helix successively pre-in mud operative employee notice
Thickener, shower water, filter gauze cleaning pump, sludge flocculation jar agitator, sludge dewatering delivery pump, cationic PAM dosing pump.
(2) Double helix pre-concentration machine starts to enter mud to spiral pressing dehydrator feed bin, controls and open 2# adhesive tape successively in notice
Conveyer, 1# rubber conveyer, spiral pressing dehydrator.
(3) if spiral pressing dehydrator mud extraction mass dryness fraction does not meets technic index (mass dryness fraction ＜ 35%), then press table 1 and adjust to mud
After matter pond adds appropriate light ash, stirring can start shooting for 30 minutes continues to run with.
8, in stalk particle thing, add film process supernatant, after mixing and stirring, tile in granule workshop, naturally dry
Dry.
9, add in the biomass sludge of dehydration film process supernatant and the mixture of stalk particle thing, cellulose mud and
Lignin, mixing and stirring.
10 it follows that use the stalk block making machine briquetting of Henan Derun Boiler Co., Ltd to make biomass fuel block.Knot
Fruit is shown in Table 3.
Table 3 film processes dosage and the ash of biomass fuel block, the heat of the mixture of supernatant and stalk particle thing
Value and density
Note: measurement of caloric value uses GB GB/T213-2008 " heat output determining method of coal " to carry out.
Claims (9)
1. the stalk fuel containing biomass sludge, it is characterised in that be made up of the raw material of following parts by weight:
Stalk fuel containing biomass sludge the most according to claim 1, it is characterised in that described containing straw
In biomass sludge, the weight of straw is 10-600kg, in terms of the weight of over dry mud per ton.
Stalk fuel containing biomass sludge the most according to claim 1, it is characterised in that described straw is straw
As the garbage of leftover bits and pieces during cutting process.
Stalk fuel containing biomass sludge the most according to claim 1, it is characterised in that the moisture of described straw
Less than 30wt%.
Stalk fuel containing biomass sludge the most according to claim 1, it is characterised in that described film processes supernatant
In the mixture of liquid and straw, straw and film process the mass ratio of supernatant is 5:1-5.
Stalk fuel containing biomass sludge the most according to claim 1, it is characterised in that in described cellulose mud
Content of cellulose is 40-60wt%, and water content is 30-50wt%, and content of ashes is 1-10wt%.
7. the preparation method of the arbitrary described stalk fuel containing biomass sludge of claim 1-6, it is characterised in that
Step is as follows:
(1) to be not dehydrated in biomass sludge add straw after be spirally dehydrated, containing the biology of straw after being dehydrated
Matter sludge；
(2) in straw, add film process supernatant mix, obtain film and process supernatant and the mixture of straw；
(3) by the biomass sludge containing straw, film processes supernatant and the mixture of straw, cellulose mud and lignin are carried out
After mixing, compound stalk forming, to obtain final product.
The preparation method of the stalk fuel containing biomass sludge the most according to claim 7, it is characterised in that step (1)
Described in the water content not being dehydrated biomass sludge be 80-99wt%.
The preparation method of the stalk fuel containing biomass sludge the most according to claim 7, it is characterised in that step (1)
Described in the biomass sludge mass dryness fraction containing straw more than 35wt%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107723048A (en) * | 2017-11-21 | 2018-02-23 | 桂林市安琪玫瑰农业发展有限公司 | A kind of method that biomass fuel is prepared using biomass sludge |
| CN108689567A (en) * | 2017-04-05 | 2018-10-23 | 沈阳绿色环保能源科技有限公司 | Hydraulic biomass filtrate sludge dewatering equipment |
| CN111996055A (en) * | 2020-07-10 | 2020-11-27 | 广西夏阳环保科技有限公司 | Composite clean coal for lime shaft kiln and preparation method thereof |
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| CN114657001A (en) * | 2022-03-30 | 2022-06-24 | 鞍钢股份有限公司 | Method for manufacturing composite fuel for sintering |
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