CN107529552A - Electromagnetism strengthens the method and device of wood fibre liquefaction jet cyclone multistage energy - Google Patents
Electromagnetism strengthens the method and device of wood fibre liquefaction jet cyclone multistage energy Download PDFInfo
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- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 45
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
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- ZOFMEZKHZDNWFN-UHFFFAOYSA-N acetic acid methane Chemical compound C.CC(O)=O ZOFMEZKHZDNWFN-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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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- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The present invention relates to the method and device that a kind of electromagnetism strengthens wood fibre liquefaction jet cyclone multistage energy, anaerobic fermentation process is divided into hydrolysis, acidifying by the present invention, the three phases that ferment independently are carried out, by electromagnetism reinforcing fiber element, hemicellulose and lignin hydrolyzate, degraded of the microorganism to cellulose, hemicellulose and lignin is greatly improved；Three stages were independently carried out, and had given full play to each stage dominant bacteria, and the organic assembling controlled by triphasic reaction condition being capable of anaerobic digestion acquisition target organism mass-energy source；Cyclone air-flotation with causing stock substrate fully to be contacted with microorganism in fermented feed liquid, heat and mass effect is good, and the generation for phenomena such as effectively avoiding crust in fermentation process, ammonia suppression, drastically increases biochemical reaction speed, is advantageous to the generation of biomass energy；The inventive method is simple, device easily manufactures, suitable for recyclings such as the Regional City such as plateau, high and cold, rural area organic wastewaters.
Description
Technical field
The invention belongs to changing waste into resources production biomass energy technology field, and in particular to a kind of electromagnetism strengthens wooden fibre
Tie up the method and device of liquefaction-jet cyclone multistage energy.
Background technology
With the development of industrial or agricultural and the raising of human living standard, the mankind are to fossil energies such as coal, oil, natural gases
Demand increasingly increases severely, but with the continuous exploitation of the mankind, the exhaustion of fossil energy is inevitable, most of fossil energy sheet
Century will be produced totally.
Biomass energy category renewable resource, biomass energy can be regenerated due to the photosynthesis by plant.Using organic
Waste anaerobic fermentation produces biomass energy, can not only effectively solve problem of environmental pollution, but also can alleviate the mankind
It is to solve the problems, such as one of effective way of energy and environment to the demand of fossil energy.
A principal element for restricting big-and-middle-sized scale anaerobic fermentation engineering is that raw material is restricted.In most cases,
Fermentation raw material is all sewage, pig manure etc., and the fermenting raw materials effect such as cow dung, sheep manure, the residual branch of plant, waste water of paper mill is managed
Think.Its reason mainly due to nature among, a large amount of celluloses, hemicellulose and wooden are contained in most of biomass material
Element, but because cellulose, hemicellulose and lignin are stable and complicated molecule knot makes its structure be difficult to efficient degradation, become system
The about principal element of anaerobic fermentation production biomass energy.
At present, mixed entirely for medium temperature using the most frequently used anaerobic digestion device of debirs production biomass energy both at home and abroad
Formula fermentation tank.Complete hybrid fermentation tank maximum is a little applied to high concentration and organic original containing a large amount of suspended particulate substances
Material.But according to anaerobic digestion three-stage theory, in the condition such as pH, temperature and microorganism species needed for each stage of anaerobic digestion
In the presence of certain difference, and inhibitory action is there are between microorganism species needed for each stage, therefore complete hybrid fermentation tank one
Determine that sufficiently biomass energy can not be produced using Organic Ingredients in degree.At the same time, in the aerogenesis stage of anaerobic digestion
Can produce a certain amount of inorganic nitrogen containing plasma, different inorganic nitrogen containing plasmas can with the continuous rise of concentration the aerogenesis of inhibition system
Ability, the development of complete hybrid fermentation technique is also limit to a certain extent.
Therefore need a kind of Novel anaerobic digestion to produce the technique and device of biomass energy, ensure cellulose, half fibre
While dimension element and lignin effectively hydrolyzing, each stage dominant bacteria of anaerobic digestion can be given full play to and solve the micro- life of each stage
Mutual inhibitory action between thing flora, realize that maximally utilizing for biomass energy is produced in debirs anaerobic digestion.
The content of the invention
The technical problem to be solved in the present invention is to overcome in the presence of existing anaerobic digestion produces biomass energy method
Lignin, cellulose and the shortcomings of hemicellulose degradation rate is low, fermentation tank easily crusts and stage microbial mutually suppresses；This hair
Bright purpose is to provide a kind of method that electromagnetism strengthens wood fibre liquefaction-jet cyclone multistage energy, and this method has
Lignin, cellulose and hemicellulose degradation efficiency high, stage by stage enhancement microbiological flora advantage, process condition and biomass energy
The advantages that source product is controllable, operating process is simple；Specifically include following steps：
Pre-process hydrolysis section：After raw material is well mixed with hydrolysis microbial inoculum, pH adjusting agent, mixture is tangentially sent into hydrolytic decomposition pot
Stable eddy flow is formed in tank body, processing is hydrolyzed under pH 4 ~ 5.2, extra electric field, magnetic fields, strengthens fiber in raw material
The degraded of element, hemicellulose and lignin；After the completion of hydrolysis stage, it is passed through high-temperature steam in its end and raw material is carried out at sterilization
Reason；In the presence of electromagnetism reinforcing, hydrolysis microbial inoculum can discharge substantial amounts of anaerobism enzyme, anaerobism during growth and breeding
The organic matter of the complicated molecule structure such as cellulose, hemicellulose and lignin can be decomposed into simple organic by enzyme；
It is acidified section：After raw material after pretreatment hydrolysis is well mixed with being acidified microbial inoculum, pH adjusting agent, mixture by ejector simultaneously
Tangential be sent into souring tank in tank body forms stable eddy flow, is acidified under pH 5.5 ~ 7.0；Raw material is by penetrating therebetween
When flowing device, intermittently it is passed through high-temperature water vapor and sterilization treatment is carried out to raw material；Being acidified microbial inoculum can be during growth and breeding
Upper stage product in addition to acetic acid, formic acid, methanol is converted into acetic acid, hydrogen and carbon dioxide etc.；
Fermentation stage：Raw material after acidifying, when passing through ejector, is intermittently passed through high-temperature steam and raw material is gone out by ejector
Bacterium is handled；Then raw material is well mixed with bactericide for generating methane, pH adjusting agent after being acidified, and mixture is tangentially sent into fermentation tank in tank
Stable eddy flow is formed in vivo, finally carries out anaerobic fermentation in pH 6.8 ~ 7.2, collects fermentation methane, biogas slurry and biogas residue；Methane phase
Bacterium can be methane acetic acid, hydrogen and carbon dioxide conversion caused by the first two stage during growth and breeding.
The raw material includes two kinds of solid and/or liquid, into reaction process before do different pretreatments respectively：
（1）The solid materials such as animal wastes, the residual branch of plant：Need to be crushed before charging, mixed processing, then pass through 80 ~ 240 mesh
Enter reaction process after fine screen mesh；
（2）The liquid charging stocks such as stalk filtrate, organic wastewater：Need to be stirred mixing before charging, then pass through 80 ~ 240 fine screen mesh
Enter reaction process afterwards.
The microbial inoculum that each stage uses in the inventive method is conventional commercial microbial inoculum；
The hydrolysis microbial inoculum is the microbial bacterial agent that conventional commercial can hydrolyze cellulose, hemicellulose and lignin, i.e., yellow
The flat lead fungi of archespore hair, discrimination wrinkle mould, composite microbial system MC1, one kind in composite microbial system WSC-6 or arbitrarily than several, hydrolyze microbial inoculum
Inoculum concentration in the feed is 3 × 109~8×109cfu/mL。
It is described acidifying microbial inoculum be conventional commercial can by organic matter be acidified be acetic acid microbial inoculum, i.e., hydrogen-producing acetogens or
One kind in homoacetogenic bacteria or arbitrarily than several, the inoculum concentration of acidifying microbial inoculum in the feed is 0.5 × 109~5×109cfu/
mL。
The bactericide for generating methane is that acetic acid can be decomposed into the microbial inoculum of methane by conventional commercial, i.e., formic acid methagen or bar
One kind in family name's sarcina methanica or arbitrarily than several, the inoculum concentration of bactericide for generating methane in the feed is 0.5 × 109~3×
109cfu/mL。
The pH adjusting agent is the one or more in citric acid, acetic acid, sodium carbonate.
Described to pre-process difference of the hydrolysis section according to raw material, the residence time is 3 ~ 72h at 35 ~ 40 DEG C of temperature；It is acidified Duan Wen
Degree residence time at 20 ~ 35 DEG C is 2 ~ 48h；Fermentation stage temperature residence time at 30 ~ 35 DEG C is 12 ~ 96h.
The hydrolysis section passes through hydrolysis of the additional electromagnetic field enhanced hydrolysis bacterium enzyme to lignin, cellulose and hemicellulose：
Because microorganism has certain electricity, magnetic activity, by the addition of micro voltage hydrolytic bacteria enzyme electronics cloud cluster can be made to change,
With more preferable activity so that catalysis microorganism greatly promotes to the degradation of cellulose, hemicellulose and lignin, with one
As anaerobic digestion techniques compare, provided for acidifying section and fermentation stage under equal raw material condition more using raw material,
And then more biomass energies can be obtained.
The step（1）Middle voltage of electric field is 0.1 ~ 1.5V.
The step（1）Middle magnetic field intensity is 0.1 ~ 20T.
Mixing plant is not set in the hydrolytic decomposition pot, souring tank and fermentation tank；Charging aperture uses tangential inlet, makes material
Stable eddy flow is formed in tank interior, it is effective to mix material and in time gas in knockout drum.
The speed that the mixture is tangentially sent into is 5 ~ 10m/s.
The cyclone air-flotation technology, has a certain amount of NH during biological producing methane3Produce, NH3As located not in time
Reason, substantial amounts of NH will be produced by being dissolved in water4 +, work as NH4 +During concentration ＞ 150mg/L, whole fermentation process will be heavily suppressed, enters
And reduce biological producing methane efficiency.The present invention makes caused NH in fermentation process by cyclone air-flotation technology3In centrifugal force and float
Quickly discharged in the presence of power, eliminate the ammonium inhibitory action of anaerobic digestion, improve gas producing efficiency.
The cyclone air-flotation technology, due to anaerobic digestion during have the gases such as biogas generation, can make in reactor
There is the disturbance of a large amount of gases in portion, ensure that the generation that encrustation phenomena is avoided in the case of not applied mechanical mixing plant.
Souring tank is tangentially sent into after mixture mixes with biogas in the acidifying section, mixture mixes with biogas in fermentation stage
Fermentation tank is tangentially sent into afterwards, prevents from crusting in fermentation tank.
Another object of the present invention be to provide it is a kind of complete the above method equipment, it include pump I, pipe-line mixer I,
Hydrolytic decomposition pot, air pump, pipe-line mixer II, ejector I, souring tank, pipe-line mixer III, ejector II, fermentation tank, gas-liquid separation
Device, gas collector；
Wherein hydrolytic decomposition pot includes housing, negative electrode, positive electrode, magnetic field generator, gas distribution pipe；Souring tank is arranged on fermentation tank
Side, diaphragm is arranged between souring tank and fermentation tank, and diaphragm is that arc falls funnel-form, and souring tank bottom is provided with natural pond
Slag exports and above diaphragm；
Pump I is connected by pipe-line mixer I with the tangential inlet I on hydrolytic decomposition pot top, and the gas distribution pipe of air pump and hydrolysis pot bottom connects
Logical, negative electrode, positive electrode are arranged in the housing of hydrolytic decomposition pot, and field generator for magnetic is arranged on the housing of hydrolytic decomposition pot, negative electrode,
Positive electrode is connected with power supply respectively；Gas vent at the top of hydrolytic decomposition pot is connected with gas collector, hydrolyzes the discharging opening of pot bottom
It is connected by valve b with pipe-line mixer II, pipe-line mixer II is connected by ejector I and the tangential inlet II on souring tank top
Logical, the discharging opening for hydrolyzing pot bottom is connected by valve a with pump I；The outlet of fermentation tank bottom is connected by valve c with pump II,
Pump II is connected by pipe-line mixer III with ejector II, and ejector II connects with the tangential inlet III of fermentation tank bottom, gas-liquid
Separator is arranged on acidifying upper end and communicated therewith, and gas-liquid separator is connected by valve with gas collector；Outlet passes through
Valve d is connected with biogas slurry outlet；Pipe-line mixer I, pipe-line mixer II, medicament entrance is provided with pipe-line mixer III,
Addition for each stage strain and pH adjusting agent；Air pump, ejector I and ejector II pass through pipeline and high-temperature water vapor respectively
Generator connects, and gas collector connects with ejector I, ejector II respectively.
The magnetic field generator is energization solenoid, and it is arranged on the inner walls of hydrolytic decomposition pot or outer wall.
The negative electricity extremely stick electrode, positive electricity are extremely arranged on the ring mesh electrode around negative electrode；Or negative electrode
With the extremely alternatively distributed plate mesh electrode of positive electricity；Or the extremely alternatively distributed ring mesh electrode of negative electrode and positive electricity.
The gas-liquid separator includes adpting flange, gas-collecting pipe, gas-liquid separation chamber, gas vent, gas-liquid separation chamber
It is arranged on by adpting flange in the outlet at the top of souring tank, gas-collecting pipe one end is arranged in souring tank, and the other end is set
In gas-liquid separation room, gas vent is arranged at the top of gas-liquid separation chamber and is connected with gas collector.
It is horn-like that the gas-collecting pipe, which is arranged on one end open in souring tank,.
The raw material prepared enters hydrolytic decomposition pot through pump I, pipe-line mixer I by the tangential inlet I at the top of hydrolytic decomposition pot, and
Stable eddy flow is formed in hydrolytic decomposition pot；High-temperature steam, by entering hydrolytic decomposition pot positioned at the gas distribution pipe of hydrolysis pot bottom, aligns through air pump
Sterilized in the hydrolysis material of hydrolysis pot bottom, the raw material after hydrolysis is sterilized is from hydrolytic decomposition pot bottom discharge mouth through valve a
Pump I is back to complete hydrolysis section reflux course or enter acidifying section through valve b；In hydrolytic process caused gas by positioned at
Gas vent at the top of hydrolytic decomposition pot enters gas collector through valve；So far, pretreatment stage is hydrolyzed to complete；The hydrolytic decomposition pot stops
Stay the time to jointly control by valve a and valve b, i.e., opened by valve a, valve b closes increase residence time of raw material；Pass through
Valve a is closed, and valve b opens the raw material that hydrolysis sterilizing is completed and enters next stage.
The material that hydrolysis sterilizing is completed passes through pipe-line mixer II, ejector I respectively；In high-temperature steam or gas collector
Biogas is thoroughly mixed to form acidifying mixed material in the ejector I by pipeline with material；The acidifying mixed material is through being located at
Tangential inlet II at the top of souring tank enters souring tank, and stable eddy flow is formed in souring tank；Gas is produced in souring tank to lead to
Cross gas-liquid separator and enter gas collector through valve.
Material enters fermentation tank by the perforate on diaphragm after the completion of the acidifying, then going out by fermenter base
Mouth discharge, respectively by pump II, pipe-line mixer III, ejector II；Biogas passes through pipeline in high-temperature steam or gas collector
In ejector II and material is thoroughly mixed to form fermenting mixed raw material；Fermenting mixed raw material is passed through positioned at the tangential of fermenter base
Entrance III enters in fermentation tank, and stable eddy flow is formed in fermentation tank；Fermentation generation gas passes through gas-liquid separation in fermentation tank
Device enters gas collector through valve；Biogas slurry after fermentation completely is discharged through outlet, valve d；Biogas residue caused by after fermentation completely
Export and discharge through biogas residue.
The present invention produces magnetic field by solenoid during hydrolysis section and cooperates with low-tension supply, electrode to produce electric microfield reinforcing
Hydrolytic bacteria enzyme is electroactive in hydrolytic decomposition pot, and then strengthens its hydrolysis to cellulose, hemicellulose and lignin；Pass through cloth
Tracheae is uniformly passed through high-temperature steam into hydrolytic decomposition pot, and sterilization processing is carried out to completing the raw material after hydrolyzing, simultaneously, due to
High-temperature steam is passed through, and the temperature field that temperature gradually rises from top to bottom can be formed in hydrolytic decomposition pot, that is, is ensureing to be acidified Duan Weisheng
Insulation effect also is served to hydrolysis section while thing dominant bacteria growth and breeding.
The present invention installs souring tank, diaphragm and fermentation tank using compact, respectively in souring tank and fermentation tank
Form relatively independent stable eddy flow：In souring tank, in the presence of eddy flow and gravity, justify in souring tank inner tank wall side
It is all nearby to form top-down eddy flow, it can then rebound to be formed positioned at acid when fluid reaches diaphragm upper surface formula
Change the eddy flow from bottom to top near tank semi-circumference, eddy flow process and so on is eventually formed in the center of souring tank
If a top-down water outlet eddy flow, and diaphragm and fermentation tank are passed through, fermentation tank is then entered by tangential inlet III,
Eddy flow process in its fermentation tank is similar with souring tank；Because gas density is much smaller than liquid, thus ferment produce gas and
The gas that raw material introduces when mixing can move from bottom to top under the double action of centrifugal force and buoyancy, and then collect；Sending out
In fermentation tank, due to the reference of air flotation technology, the disturbance of gas from bottom to top can cause biogas residue by gas wrap up so that gradually on
Rise to diaphragm lower surface, due to the characteristic of fluid, biogas residue caused by fermentation stage then can along diaphragm lower surface by
Gradually rise, and be finally piled up in acidifying pot bottom, at the same time due under centrifugal force and Action of Gravity Field, being acidified natural pond caused by section
Slag can then move downward along acidifying top tank structure, and finally be piled up in acidifying pot bottom, and then exported by biogas residue and collect discharge
Biogas residue.
Feature is possessed by the present invention：
（1）It is adapted to the fermentation raw materials such as cellulose, hemicellulose and the high debirs of content of lignin or waste water, mass transfer effect
Good, volumetric loading is high；
（2）Segmentation structure, each stage dominant bacteria growth and breeding is good, may advantageously facilitate the lifting of factor of created gase, while each stage
Control make it that product is flexible, available for biomass energies such as anaerobic digestion production biogas, hydrogen and ethanol；
（3）It is good suitable for the area of the unsuitable mesophilic anaerobic digestion technology such as plateau, high and cold, application prospect；
（4）Energy consumption is small, compared with tradition machinery stirs, energy-conservation more than 30%；
（5）Ligocellulose degradation leads height, and then make it that factor of created gase is high, and more than 40% is improved than traditional biogas production technique；
（6）Compact is installed in series, and space is small, and cost is low；
（7）Operating cost is low, obvious environment benefit.
（8）Cyclone air-flotation with causing stock substrate fully to be contacted with microorganism in fermented feed liquid, heat and mass effect
Well, the generation for phenomena such as and effectively avoiding crust in fermentation process, ammonia suppression, drastically increases biochemical reaction speed
Degree, is advantageous to the generation of biomass energy；
（9）The inventive method is simple, device easily manufactures, suitable for resources such as the Regional City such as plateau, high and cold, rural area organic wastewaters
Change and utilize.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation；
Fig. 2 is apparatus of the present invention distribution of electrodes structural representation；Wherein scheme（a）In upper figure be negative electricity extremely stick electrode, positive electricity
The ring mesh electrode front view being extremely arranged on around negative electrode, figure below is top plan view；Figure（b）In upper figure be negative electrode
With the extremely alternatively distributed plate mesh electrode front view of positive electricity, figure below is top plan view；Figure（c）In upper figure be negative electrode and sun
Electrode is alternatively distributed ring mesh electrode front view, and figure below is top plan view；
Fig. 3 is apparatus of the present invention structure of gas liquid separator schematic diagram；
Fig. 4 is apparatus of the present invention tangential inlet structural representation；
Fig. 5 is apparatus of the present invention diaphragm structural representation, and wherein A figures are sectional view, and B figures are stereogram；
In figure：1- pumps I；2- pipe-line mixers I；3- tangential inlets I；4- hydrolytic decomposition pots；5- negative electrodes；6- positive electrodes；7- gas distribution pipes；
8- air pumps；9- pipe-line mixers II；10- ejectors I；11- tangential inlets II；12- souring tanks；13- is exported；14- pumps II；15-
Pipe-line mixer III；16- ejectors II；17- tangential inlets III；18- fermentation tanks；19- diaphragms；20- gas-liquid separators；
21- adpting flanges；22- gas collection mouths；23- gas-liquid separation chamber；24- gas vents；25- gas collectors；26- power supplys；27-
Biogas residue exports；28- medicament entrances.
Embodiment
The invention will now be further described with reference to specific embodiments, and advantages of the present invention and feature can with description and more
Add clear；But these embodiments are only exemplary, it is intended to for explaining the present invention, and it is not intended that to limit of the invention
System；It will be apparent to a skilled person that without departing from the spirit and scope of the invention can be to the technology of the present invention
The details and form of scheme are modified and replaced, but these modifications and replacement are each fallen within protection scope of the present invention.
Embodiment 1
The process object of the present embodiment：Certain municipal sewage plant's sanitary sewage, its COD are 300~400mg/L, and BOD is
200mg/L, ammonia nitrogen 30mg/L, total phosphorus are 2~3mg/L, and cellulose, hemicellulose and content of lignin are 30%.
The present embodiment sanitary sewage anaerobic fermentation process is independently carried out stage by stage, specifically includes following three phases：
（1）Pre-process hydrolysis section：By the composite microbial system MC1 for pre-purchaseing and cultivating according to 5 × 109Cfu/mL inoculum concentration and original
Material uniformly mixing, and being adjusted mixture pH to 5 by acetic acid, mixture is tangentially sent into hydrolytic decomposition pot the shape in tank body with 6m/s
Into eddy flow is stablized, processing 24h is hydrolyzed in the case where 5,36 DEG C of pH, extra electric field 0.8V, magnetic field intensity are 0.5T effects, strengthens
The degraded of cellulose, hemicellulose and lignin in raw material；After the completion of hydrolysis, it is passed through high-temperature steam and hydrolysis material is sterilized
Processing；
（2）It is acidified section：By hydrogen-producing acetogens and homoacetogenic bacteria in mass ratio 2:8 ratio mixing, then by 3 ×
109Raw material is sufficiently mixed and is adjusted mixture pH to 6 by lemon sodium after cfu/mL inoculum concentration and hydrolysis, mixture with
5m/s is tangentially sent into souring tank forms stable eddy flow in tank body, and acidifying 30h is carried out under 30 DEG C, pH 6；Raw material exists therebetween
When passing through ejector, intermittently it is passed through high-temperature water vapor and sterilization treatment is carried out to raw material；
（3）Fermentation stage：Raw material after acidifying is by ejector, while interval is passed through high-temperature steam and carries out sterilization treatment to raw material；
In the intermittent phase of sterilization treatment, formic acid methagen is pressed 1.5 × 109Raw material after cfu/mL inoculum concentration and acidifying is fully mixed
Close and adjusted mixture pH to 6.5 by sodium carbonate, mixture is tangentially sent into 7m/s in fermentation tank to be formed surely in tank body
Determine eddy flow, finally in 6.5,32 DEG C of progress anaerobic fermentation 34h of pH, collect fermentation methane, biogas slurry and biogas residue.
Such as Fig. 1,2（a）, 3,4, shown in 5, realizing the device of this method includes pump I 1, pipe-line mixer I 2, hydrolytic decomposition pot 4, gas
Pump 8, pipe-line mixer II 9, ejector I 10, souring tank 12, pipe-line mixer III 15, ejector II 16, fermentation tank 18, gas-liquid
Separator 20, gas collector 25；Wherein hydrolytic decomposition pot 4 includes housing, negative electrode 5, positive electrode 6, magnetic field generator, gas distribution pipe 7；
Souring tank 12 is arranged on the top of fermentation tank 18, and diaphragm 19 is arranged between souring tank 12 and fermentation tank 18, diaphragm 19
Funnel-form is fallen for arc, and the bottom of souring tank 12 is provided with biogas residue outlet 27 and positioned at the top of diaphragm 19；Magnetic field generator is
Energization solenoid 23, it is arranged on the housing exterior walls of hydrolytic decomposition pot；Negative electrode 5 is stick electrode, and positive electrode 6 is to be arranged on negative electrode
The ring mesh electrode of surrounding；
Pump I 1 is connected by pipe-line mixer I 2 with the tangential inlet I 3 on the top of hydrolytic decomposition pot 4, air pump 8 and the cloth of the bottom of hydrolytic decomposition pot 4
Tracheae 7 is connected, and negative electrode 5, positive electrode 6 are arranged in the housing of hydrolytic decomposition pot 4, and field generator for magnetic is arranged on the shell of hydrolytic decomposition pot 4
On body, negative electrode 5, positive electrode 6 are connected with power supply 26 respectively；The gas vent at the top of hydrolytic decomposition pot 4 is connected with gas collector 25,
The discharging opening of the bottom of hydrolytic decomposition pot 4 is connected by valve b with pipe-line mixer II 9, pipe-line mixer II 9 by ejector I 10 with
The tangential inlet II 11 on the top of souring tank 12 is connected, and the discharging opening of the bottom of hydrolytic decomposition pot 4 is connected by valve a with pump I 1；Fermentation tank
The outlet 13 of 18 bottoms is connected by valve c with pump II 14, and pump II 14 is connected by pipe-line mixer III 15 with ejector II 16,
Ejector II 16 connects with the tangential inlet III 17 of the bottom of fermentation tank 18, gas-liquid separator 20 be arranged on the top of souring tank 12 and with
It is connected, and gas-liquid separator 20 is connected by valve with gas collector 25；Outlet 13 is connected by valve d and biogas slurry outlet
Connect；Pipe-line mixer I 2, pipe-line mixer II 9, medicament entrance 28 is provided with pipe-line mixer III 15；Air pump 8, ejector I
10 and ejector II 16 be connected respectively by pipeline with high-temperature water vapor generator, gas collector 25 respectively with ejector I 10,
Ejector II 16 connects；
After sewage treatment plant's sanitary sewage is by 200 mesh fine screen mesh filtration treatments, pipe-line mixer I 2 and hydrolysis are passed through by pump I 1
After microbial inoculum, pH adjusting agent mixing, mixture enters hydrolytic decomposition pot 4 by the tangential inlet I 3 of hydrolytic decomposition pot, its temperature remain 36 DEG C,
PH is 5, this stage power-on 26, and it is 0.8V to apply low-voltage to hydrolysis section by anodic-cathodic, opens energization solenoid 23,
Magnetic field intensity be 0.5T effect under processing is hydrolyzed, by Open valve a and close valve b control hydrolysis section stop
Time is 24h.
After hydrolysis section reaches predetermined parking time, Open valve b simultaneously closes valve a, while opens air pump 8 and pass through gas distribution
Pipe 7 is passed through high-temperature steam, makes after hydrolyzing the pretreated sterilized processing of material by pipe-line mixer II 9, ejector I
10, entered through tangential inlet II 11 in souring tank 12, and form stable eddy flow；Raw material mixes when passing through pipe-line mixer II 9
Enter hydrogen-producing acetogens and homoacetogenic bacteria, to keep in souring tank temperature be 30 DEG C, pH 6, and controls this by closing valve d
Stage residence time is 30h；Simultaneously a high-temperature steam is passed through every 6h to ejector I 10；
Material is entered by outlet 13, pump II 14, pipe-line mixer III 15 and ejector II 16 through tangential inlet III 17 after acidifying
In fermentation tank 18, stable eddy flow is formed；Raw material is mixed into formic acid methagen when passing through pipe-line mixer III 15, keep fermentation tank
Interior temperature is 32 DEG C, pH 6.5, residence time 34h, while is continuously passed through biogas into ejector II 16 and is mixed with raw material
Close；
After the separation of gas-liquid separator 20, gas collector 25 is stored final methane, and biogas residue is passed through positioned at the lower end of souring tank 12
Slag-drip opening 27 is discharged, and biogas slurry is discharged by valve d.
After process above is handled, finally collect in biogas residue, cellulose, hemicellulose and content of lignin reduce respectively
31%th, 34% and 29%；Gas production is relatively stable, is maintained at 1.5 ~ 2.0m3/（m3d）, gas production carries significantly compared to traditional zymotic technique
Height, caused methane content are 60% ~ 70%, can be directly used as combustion of natural gas after desulfurization, drying.
Embodiment 2
The process object of the present embodiment：Cow manure filtrate caused by certain milk cattle cultivating factory, its COD are 40000~50000mg/
L, BOD 20000-30000mg/L, ammonia nitrogen 40mg/L, cellulose, hemicellulose and content of lignin are 70%；Cow manure is filtered
Liquid crosses 80 mesh sieves；
The present embodiment sanitary sewage anaerobic fermentation process is independently carried out stage by stage, specifically includes following three phases：
（1）Pre-process hydrolysis section：By the Phanerochaete chrysosporium for pre-purchaseing and cultivating, discrimination wrinkle mould in mass ratio 6:4 ratio
Example mixing, and with 6.5 × 109Cfu/mL inoculum density uniformly mixes with raw material, by citric acid by mixture pH adjust to
4, mixture is tangentially sent into 8m/s in hydrolytic decomposition pot forms stable eddy flow in tank body, in 4,35 DEG C of pH, extra electric field 1V, magnetic
Field intensity is that processing 12h is hydrolyzed under 5T effects, strengthens the degraded of cellulose, hemicellulose and lignin in raw material；Hydrolysis
After the completion of, it is passed through high-temperature steam and sterilization treatment is carried out to hydrolysis material；
（2）It is acidified section：By hydrogen-producing acetogens and homoacetogenic bacteria in mass ratio 4:6 ratio mixing, and according to 3 ×
109Raw material is sufficiently mixed and is adjusted mixture pH to 7 by citric acid after cfu/mL inoculum concentration and hydrolysis, mixture with
10m/s is tangentially sent into souring tank forms stable eddy flow in tank body, and acidifying 8h is carried out under 25 DEG C, pH 7；Raw material exists therebetween
When passing through ejector, intermittently it is passed through high-temperature water vapor and sterilization treatment is carried out to raw material；
（3）Fermentation stage：Raw material after acidifying is intermittently passed through high-temperature steam and carries out sterilization treatment to raw material by ejector；Going out
The intermittent phase of bacterium processing, by formic acid methagen according to 2.2 × 109Raw material after cfu/mL inoculum concentration and acidifying is fully mixed
Close and adjusted mixture pH to 7 by sodium carbonate, mixture is tangentially sent into 10m/s in fermentation tank to be formed surely in tank body
Determine eddy flow, finally in pH7,30 DEG C of progress anaerobic fermentation 20h, collect fermentation methane, biogas slurry and biogas residue.
Such as Fig. 1,2（b）It is shown, the apparatus structure of this method is realized with embodiment 1, and difference is negative electrode 5 and positive electrode 6
For alternatively distributed plate mesh electrode；Gas-liquid separator 20 include adpting flange 21, gas-collecting pipe 22, gas-liquid separation chamber 23,
Gas vent 24, gas-liquid separation chamber 23 are arranged on by adpting flange 21 in the outlet at the top of souring tank 12, gas-collecting pipe 22
One end is arranged in souring tank 12, and the other end is arranged in gas-liquid separation chamber 23, and gas vent 24 is arranged on gas-liquid separation chamber 23
Top is simultaneously connected with gas collector 25；It is horn-like that gas-collecting pipe 22, which is arranged on one end open in souring tank 12,.
After process above is handled, finally collect in biogas residue, cellulose, hemicellulose and content of lignin reduce respectively
35%th, 38% and 31%；Gas production is relatively stable, is maintained at 1.7 ~ 2.2m3/（m3d）, gas production carries significantly compared to traditional zymotic technique
Height, caused methane content are 60% ~ 75%, can be directly used as combustion of natural gas after desulfurization, drying.
Embodiment 3
The process object of the present embodiment：The abandoned vegetable of certain vegetables cultivation base, its COD are 50000mg/L, and BOD is
30000mg/L, cellulose, hemicellulose and content of lignin are 80%；
The present embodiment sanitary sewage anaerobic fermentation process is independently carried out stage by stage, specifically includes following three phases：
（1）Pre-process hydrolysis section：The composite microbial system WSC-6 for pre-purchaseing and cultivating is according to 4 × 109Cfu/mL inoculum concentration and original
Material uniformly mixing, is adjusted mixture pH to 5.1 by citric acid, mixture is tangentially sent into hydrolytic decomposition pot in tank body with 10m/s
It is interior to form stable eddy flow, processing 20h is hydrolyzed in the case where 5.1,40 DEG C of pH, extra electric field 1.5V, magnetic field intensity are 9T effects,
Strengthen the degraded of cellulose, hemicellulose and lignin in raw material；After the completion of hydrolysis, it is passed through high-temperature steam and hydrolysis material is carried out
Sterilization treatment；
（2）It is acidified section：By hydrogen-producing acetogens and homoacetogenic bacteria in mass ratio 5:5 ratio mixing, and according to 3.4 ×
109Raw material is sufficiently mixed and is adjusted mixture pH to 5.5 by citric acid after cfu/mL inoculum density and hydrolysis, mixes
Thing is tangentially sent into souring tank with 5m/s and stable eddy flow is formed in tank body by ejector, in 5.5 times 35 DEG C, pH progress
It is acidified 16h；Raw material is intermittently passed through high-temperature water vapor and carries out sterilization treatment to raw material when passing through ejector therebetween；
（3）Fermentation stage：Raw material after acidifying is intermittently passed through high-temperature steam and carries out sterilization treatment to raw material by ejector；Going out
The intermittent phase of bacterium processing, by formic acid methagen according to 1.5 × 109Raw material after cfu/mL inoculum concentration and acidifying is fully mixed
Close and adjusted mixture pH to 7.2 by sodium carbonate, mixture is tangentially sent into 5m/s in fermentation tank to be formed surely in tank body
Determine eddy flow, finally in pH7.2,35 DEG C of progress anaerobic fermentation 30h, collect fermentation methane, biogas slurry and biogas residue.
Such as Fig. 1,2（c）It is shown, the apparatus structure of this method is realized with embodiment 1, and difference is negative electrode 5 and positive electrode 6
For alternatively distributed ring mesh electrode；The material that hydrolysis sterilizing is completed passes through pipe-line mixer II, ejector I respectively；Gas
Biogas with material in pipeline to ejector I by being thoroughly mixed to form acidifying mixed material in collector；Thing passes through after the completion of acidifying
During punishment in advance ejector II, biogas is mixed by being thoroughly mixed to form fermentation with material in pipeline to ejector II in gas collector
Raw material；
After process above is handled, finally collect in biogas residue, cellulose, hemicellulose and content of lignin reduce by 35% respectively,
38% and 31%；Gas production is relatively stable, is maintained at 1.6 ~ 2.0m3/（m3d）, gas production greatly improves compared to traditional zymotic technique,
Caused methane content is 65% ~ 70%, can be directly used as combustion of natural gas after desulfurization, drying.
Claims (15)
1. a kind of method that electromagnetism strengthens wood fibre liquefaction-jet cyclone multistage energy, it is characterised in that by anaerobic fermentation
Process is independently carried out stage by stage, specifically includes following three phases：
（1）Pre-process hydrolysis section：After raw material is well mixed with hydrolysis microbial inoculum, pH adjusting agent, mixture is tangentially sent into hydrolytic decomposition pot
In stable eddy flow is formed in tank body, processing is hydrolyzed under pH 4 ~ 5.2, extra electric field, magnetic fields, in reinforcing raw material
The degraded of cellulose, hemicellulose and lignin；After the completion of hydrolysis, it is passed through high-temperature steam and sterilization treatment is carried out to hydrolysis material；
（2）It is acidified section：After raw material after pretreatment hydrolysis is well mixed with acidifying microbial inoculum, pH adjusting agent, mixture passes through jet
Device, and be tangentially sent into souring tank and stable eddy flow is formed in tank body, it is acidified under pH 5.5 ~ 7.0；Raw material is logical therebetween
When crossing ejector, intermittently it is passed through high-temperature water vapor and sterilization treatment is carried out to raw material；
（3）Fermentation stage：Raw material after acidifying, when passing through ejector, is intermittently passed through high-temperature steam and raw material is entered by ejector
Row sterilization treatment；Then raw material is well mixed with bactericide for generating methane, pH adjusting agent after being acidified, and mixture is tangentially sent into fermentation tank
Stable eddy flow is formed in tank body, finally carries out anaerobic fermentation in pH 6.5 ~ 7.2, collects fermentation methane, biogas slurry and biogas residue.
2. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：Raw material is animal wastes, the residual branch of plant, stalk filtrate, one kind in organic wastewater or arbitrarily than several, raw material crosses 80 ~
240 mesh sieves cross 80 ~ 240 mesh sieves after crushed.
3. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：Microbial inoculum is hydrolyzed as the conventional microbiological microbial inoculum that can hydrolyze cellulose, hemicellulose and lignin, hydrolyzes the inoculation of microbial inoculum
Measure as 3 × 109~8×109cfu/mL。
4. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：Acidifying microbial inoculum is the microbial inoculum that organic matter acidifying can be acetic acid by routine, and the inoculum concentration for being acidified microbial inoculum is 0.5 × 109~5×
109cfu/mL。
5. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：Acetic acid can routinely be decomposed into the microbial inoculum of methane by bactericide for generating methane, and the inoculum concentration of bactericide for generating methane is 0.5 × 109~3×
109cfu/mL。
6. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：Step（2）Middle mixture is tangential after being mixed with biogas to be sent into souring tank, step（3）Middle mixture is cut after being mixed with biogas
To feeding fermentation tank.
7. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：Pretreatment hydrolysis section is that 3 ~ 72h is stopped at 35 ~ 40 DEG C of temperature；Acidifying section is 2 ~ 48h of stop at 20 ~ 35 DEG C；Fermentation
Section is to stop 12 ~ 96h at 30 ~ 35 DEG C.
8. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：The speed that mixture is tangentially sent into is 5 ~ 10m/s.
9. electromagnetism according to claim 1 strengthens the method for wood fibre liquefaction-jet cyclone multistage energy, its feature
It is：Step（1）Middle voltage of electric field is 0.1 ~ 1.5V.
10. the method that electromagnetism according to claim 1 strengthens wood fibre liquefaction-jet cyclone multistage energy, it is special
Sign is：Step（1）Middle magnetic field intensity is 0.1 ~ 20T.
11. realize that electromagnetism any one of claim 1-10 strengthens wood fibre liquefaction-jet cyclone multistage energy
The device of method, it is characterised in that：Including pump I（1）, pipe-line mixer I（2）, hydrolytic decomposition pot（4）, air pump（8）, pipe-line mixer
Ⅱ（9）, ejector I（10）, souring tank（12）, pipe-line mixer III（15）, ejector II（16）, fermentation tank（18）, gas-liquid point
From device（20）, gas collector（25）；
Wherein hydrolytic decomposition pot（4）Including housing, negative electrode（5）, positive electrode（6）, magnetic field generator, gas distribution pipe（7）；Souring tank（12）
It is arranged on fermentation tank（18）Top, diaphragm（19）It is arranged on souring tank（12）And fermentation tank（18）Between, diaphragm
（19）Funnel-form is fallen for arc, souring tank（12）Bottom is provided with biogas residue outlet（27）And it is located at diaphragm（19）Top；
Pump I（1）Pass through pipe-line mixer I（2）With hydrolytic decomposition pot（4）The tangential inlet I on top（3）Connection, air pump（8）With hydrolytic decomposition pot
（4）The gas distribution pipe of bottom（7）Connection, negative electrode（5）, positive electrode（6）It is arranged on hydrolytic decomposition pot（4）Housing in, magnetic field fills
Put and be arranged on hydrolytic decomposition pot（4）Housing on, negative electrode（5）, positive electrode（6）Respectively with power supply（26）Connection；Hydrolytic decomposition pot（4）Top
Gas vent and gas collector（25）Connection, hydrolytic decomposition pot（4）The discharging opening of bottom passes through valve b and pipe-line mixer II
（9）Connection, pipe-line mixer II（9）Pass through ejector I（10）With souring tank（12）The tangential inlet II on top（11）Connection, water
Solve tank（4）The discharging opening of bottom passes through valve a and pump I（1）Connection；Fermentation tank（18）The outlet of bottom（13）By valve c with
Pump II（14）Connection, pump II（14）Pass through pipe-line mixer III（15）With ejector II（16）Connection, ejector II（16）With hair
Fermentation tank（18）The tangential inlet III of bottom（17）Connection, gas-liquid separator（20）It is arranged on souring tank（12）Top simultaneously connects with it
It is logical, gas-liquid separator（20）Pass through valve and gas collector（25）Connection；Outlet（13）Connected by valve d and biogas slurry outlet
Connect；
Pipe-line mixer I（2）, pipe-line mixer II（9）, pipe-line mixer III（15）On be provided with medicament entrance（28）；Air pump
（8）, ejector I（10）With ejector II（16）It is connected respectively by pipeline with high-temperature water vapor generator, gas collector
（25）Respectively with ejector I（10）, ejector II（16）Connection.
12. device according to claim 11, it is characterised in that：Magnetic field generator is energization solenoid（23）, it is set
In the inner walls or outer wall of hydrolytic decomposition pot.
13. device according to claim 11, it is characterised in that：Negative electrode（5）For stick electrode, positive electrode（6）To set
Put the ring mesh electrode around negative electrode；Or negative electrode（5）And positive electrode（6）For alternatively distributed plate mesh electrode；Or
Negative electrode（5）And positive electrode（6）For alternatively distributed ring mesh electrode.
14. device according to claim 11, it is characterised in that：Gas-liquid separator（20）Including adpting flange（21）, gas
Body collecting pipe（22）, gas-liquid separation chamber（23）, gas vent（24）, gas-liquid separation chamber（23）Pass through adpting flange（21）It is arranged on
Souring tank（12）In the outlet at top, gas-collecting pipe（22）One end is arranged on souring tank（12）Interior, the other end is arranged on gas-liquid
Separation chamber（23）It is interior, gas vent（24）It is arranged on gas-liquid separation chamber（23）Top and and gas collector（25）Connection.
15. device according to claim 14, it is characterised in that：Gas-collecting pipe（22）It is arranged on souring tank（12）Interior one
End opening is horn-like.
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| CN109607784A (en) * | 2018-12-18 | 2019-04-12 | 武汉理工大学 | A kind of method of electromagnetic wave load returned sludge regulator control system biological community structure |
| CN111690520A (en) * | 2020-07-15 | 2020-09-22 | 北京诚益通控制工程科技股份有限公司 | Dynamic pipeline fermentation device and fermentation method |
| CN115231701A (en) * | 2022-07-29 | 2022-10-25 | 东北电力大学 | Adjustable electrostatic field pretreatment enhanced anaerobic digestion gas production device |
| CN117821242A (en) * | 2024-01-12 | 2024-04-05 | 上海交通大学 | Device and method for improving anaerobic fermentation methane production through current-carrying coil magnetic field |
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