CN109439539A - Plug-flow anaerobic fermentation system and method are forced in buried segmentation - Google Patents
Plug-flow anaerobic fermentation system and method are forced in buried segmentation Download PDFInfo
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- CN109439539A CN109439539A CN201811564636.3A CN201811564636A CN109439539A CN 109439539 A CN109439539 A CN 109439539A CN 201811564636 A CN201811564636 A CN 201811564636A CN 109439539 A CN109439539 A CN 109439539A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000855 fermentation Methods 0.000 title claims abstract description 24
- 230000011218 segmentation Effects 0.000 title claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 159
- 239000000463 material Substances 0.000 claims abstract description 120
- 230000007062 hydrolysis Effects 0.000 claims abstract description 75
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 75
- 230000002053 acidogenic effect Effects 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000004151 fermentation Effects 0.000 claims abstract description 6
- 230000029087 digestion Effects 0.000 claims description 26
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 3
- 230000003301 hydrolyzing effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000170 cell membrane Anatomy 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/02—Stirrer or mobile mixing elements
- C12M27/06—Stirrer or mobile mixing elements with horizontal or inclined stirrer shaft or axis
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/16—Screw conveyor
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/26—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pH
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M43/00—Combinations of bioreactors or fermenters with other apparatus
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
-
- 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
Abstract
The invention discloses a kind of buried segmentations to force plug-flow anaerobic fermentation system and method, the system comprises: hydrolysis reactor, the first pipeline connection of material inlet and conveying to fermentation materials；Acidogenic reactor, material inlet are connected to the material outlet of hydrolysis reactor, and the arrangement height of acidogenic reactor is lower than hydrolysis reactor；Methane-producing reactor, material inlet are connected to the material outlet of acidogenic reactor, and the arrangement height of methane-producing reactor is lower than acidogenic reactor；Methane pipeline, for the biogas generated in hydrolysis reactor, acidogenic reactor and methane-producing reactor to be directed into biogas storage tank；Waste material discharge line is connected to the material outlet of methane-producing reactor, for the material after having reacted to be directed into solid-liquid separating machine.After entire reaction is divided into mutually independent three sections by the present invention, technological parameter is more controllable, and energy Discrete control, the conversion ratio of reaction also can be accordingly improved, and the methane content of produced biogas is relatively high.
Description
Technical field
The present invention relates to biogas, environmental protection industry (epi) field, relate generally to a kind of device of medium and high temperature anaerobic digestion producing methane.
Background technique
Anaerobic digestion techniques refer to organic matter under anaerobic, will be biodegradable organic by amphimicrobe and anaerobic bacteria
Object decomposes CH4、CO2、H2O and H2The digestion techniques of S.Anaerobic digestion techniques are widely used in sewage sludge, feces of livestock and poultry and city
City's organic waste treatment etc. may be implemented recycling economy development, environmental protection, reduce greenhouse gas emission and production
The targets such as renewable energy.
According to the temperature of reactor, anaerobic digestion techniques can be divided into mesophilic anaerobic digestion and thermophilic digestion.It is middle and high
Warm anaerobic digestion producing methane is also method more common in the world, but this method is substantially and is stirred using ground type anaerobism
Method is low with solid content, gas production is not high, take up a large area, invests that excessive, heat insulation effect is poor, service life is short, material stream
The disadvantages of dynamic state labile.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of buried segmentations to force plug-flow anaerobic fermentation system and side
Method, to solve subproblem present in current ground type anaerobism paddling process.
The technical solution adopted by the present invention to solve the technical problems is: providing the buried segmentation of one kind and plug-flow is forced to be detested
Aerobe fermentation system, comprising:
Hydrolysis reactor, first pipeline connection of the material inlet and conveying of the hydrolysis reactor to fermentation materials；The water
Solution reactor configurations have the first plug-flow propeller, the first plug-flow propeller be used for by material from the material inlet of hydrolysis reactor to
Material outlet direction pushes；
Acidogenic reactor, the material inlet of the acidogenic reactor are connected to the material outlet of the hydrolysis reactor, and are produced
The arrangement height of acid reactor is lower than hydrolysis reactor；The acidogenic reactor is configured with the second plug-flow propeller, the second plug-flow spiral shell
Paddle is revolved to be used to push material from the material inlet of acidogenic reactor to material outlet direction；
Methane-producing reactor, the material inlet of the methane-producing reactor are connected to the material outlet of the acidogenic reactor,
And the arrangement height of methane-producing reactor is lower than acidogenic reactor；The acidogenic reactor is configured with third plug-flow propeller, third
Plug-flow propeller is used to push material from the material inlet of methane-producing reactor to material outlet direction；
Methane pipeline, the methane pipeline in hydrolysis reactor, acidogenic reactor and methane-producing reactor for will generate
Biogas be directed into biogas storage tank；
Waste material discharge line, the waste material discharge line are connected to the material outlet of the methane-producing reactor, and being used for will be anti-
Material after having answered is directed into solid-liquid separating machine.
It further, further include Matter Transfer pipeline, the beginning of the Matter Transfer pipeline and the methane-producing reactor
End section connection, the tail end of Matter Transfer pipeline are connected to the initial segment of the hydrolysis reactor；It is arranged on Matter Transfer pipeline
There is reflux pump, reflux pump provides power for flowing to tail end by the beginning of Matter Transfer pipeline for material.
Further, water sealed tank is equipped at the material inlet of the hydrolysis reactor.
Further, the first plug-flow propeller is driven by the first power mechanism and is rotated, the second plug-flow spiral shell
It revolves paddle and is driven by the second power mechanism and rotated, the third plug-flow propeller is driven by third power mechanism to be rotated.
Buried segmentation of the invention forces plug-flow anaerobic fermentation system to have the following beneficial effects: that (1) is anti-due to hydrolyzing
Answering the arrangement height of device, acidogenic reactor and methane-producing reactor successively reduces, therefore the system can efficiently use landform
Height difference is built, especially mountainous region or knob, so as to reduce the investment of infrastructure；(2) entire reaction is divided into
After mutually independent three sections, technological parameter is more controllable, and energy Discrete control, the conversion ratio of reaction also can be accordingly improved, institute
The methane content for producing biogas is relatively high；(3) in use, being embedded in ground for hydrolysis reactor, acidogenic reactor and methane-producing reactor
After lower, each reactor can efficiently use underground heat and be kept the temperature, and the outer wall thermal insulation material and thickness of reactor can be reduced accordingly,
Compared with ground type anaerobism paddling process, heat loss can reduce by 50% or more.
In addition, the present invention also provides a kind of buried segmentations to force plug-flow anaerobic fermentation method, this method is using successively
It connects and mutually independent hydrolysis section, the sour section of production, methane phase section carries out anaerobic fermentation to material, this method comprises the following steps:
S1, the material wait ferment is sent into hydrolysis section after water sealed tank；
S2, in hydrolysis section, so that material is done bottom horizontal flow sheet by plug-flow propeller, flowing velocity is controlled in 1.5m/h-2m/
Between h；In hydrolysis section, pH value is controlled between 6.5-7.5, and pressure controls between 5KPa-10KPa, when mesophilic anaerobic digestion
Temperature controls between 40 DEG C -45 DEG C, and temperature control is at 55 DEG C -60 DEG C when thermophilic digestion；The biogas generated in hydrolysis section
Pass through Pipeline transport to biogas storage tank；In hydrolysis section, under the action of hydrolysis is with zymogenous bacteria, macromolecule organic is decomposed
For that can be dissolved in water and the absorption and utilization of anaerobe can be conducive to through the small-molecule substance of cell membrane；
S3, the material after hydrolysis section hydrolyzes enter in the sour section of production, in producing sour section, equally pass through plug-flow propeller
Material is set to do bottom horizontal flow sheet, flowing velocity controls between 1.2m/h-1.5m/h；Produce in sour section, pH value control 6.5-7.5 it
Between, in 5KPa-10KPa, mesophilic anaerobic digestion, temperature control is between 35 DEG C -40 DEG C for pressure control, when thermophilic digestion
Temperature controls between 53 DEG C -57 DEG C；It produces the biogas generated in sour section and equally passes through Pipeline transport to biogas storage tank；Produce sour section
In, under the action of producing hydrogen, acetogen, the product of hydrolysis section is converted further as acetic acid, hydrogen, carbon dioxide and new
Cellular material；
S4, after producing sour section, be converted to H2、CO2Methane phase section is entered with the material of acetic acid, in methane phase section, together
Sample makes material do bottom horizontal flow sheet by plug-flow propeller, and flowing velocity controls between 0.5m/h-1.0m/h；In methane phase section,
PH value controls between 6.2-7.2, and pressure controls between 5KPa-10KPa, when mesophilic anaerobic digestion temperature control 30 DEG C-
35 DEG C, temperature control is between 48 DEG C -53 DEG C when thermophilic digestion；It is defeated that the biogas generated in methane phase section equally passes through pipeline
It send to biogas storage tank；In methane phase section, under the action of methanogen, the substances such as acetic acid, hydrogen, the carbonic acid that sour section generates are produced
It is converted into methane, carbon dioxide and new cellular material；
A part of material is passed through the beginning of Matter Transfer Pipeline transport to hydrolysis section after the reaction of methane phase section by S5, material
It holds and continues successively to react through hydrolysis section, the sour section of production, methane phase section, another part material is delivered to admittedly by waste material discharge line
Liquid separator is separated by solid-liquid separation.
Further, in step s 5, material flows into material circulation line and waste material discharge pipe after the reaction of methane phase section
The ratio between the material on road is 1.5-2:1.
Further, the hydrolysis section, the sour section of production and methane phase Duan Jun are embedded in underground, and the arrangement height of methane phase section
Bottom produces sour section, and the arrangement height for producing sour section is lower than hydrolysis section.
Buried segmentation of the invention force plug-flow anaerobic fermentation method have the following beneficial effects: () due to hydrolysis section,
The arrangement height for producing sour section and methane phase section successively reduces, therefore this method can efficiently use topographical elevation difference and be built
It makes, especially mountainous region or knob, so as to reduce the investment of infrastructure；(2) entire reaction is divided into mutually independent three
Duan Hou, technological parameter is more controllable, and energy Discrete control, the conversion ratio of reaction also can be accordingly improved, the methane of produced biogas
Comparision contents are high；(3) hydrolysis section, produce sour section and methane phase section is embedded in after underground, each conversion zone can efficiently use underground heat into
Row heat preservation, the outer wall thermal insulation material and thickness of conversion zone can be reduced accordingly, and compared with ground type anaerobism paddling process, heat loss can drop
Low 50% or more.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 2；
In the figure, it is marked as the first pipeline of 1-, 2- hydrolysis reactor, 21- the first plug-flow propeller, the first power mechanism of 22-,
3- acidogenic reactor, 31- the second plug-flow propeller, the second power mechanism of 32-, 4- methane-producing reactor, 41- third plug-flow spiral
Paddle, 42- third power mechanism, 5- methane pipeline, 6- waste material discharge line, 71- Matter Transfer pipeline, 72- reflux pump, 8- water seal
Slot.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below, but embodiments of the present invention are not limited to
This.
Embodiment 1:
Present embodiments provide a kind of buried segmentation and force plug-flow anaerobic fermentation method, this method use be sequentially connected and
Mutually independent hydrolysis section produces sour section, methane phase section to material progress anaerobic fermentation, wherein hydrolysis section produces sour section and methane phase
The arrangement height of section successively reduces, i.e., the arrangement height bottom of methane phase section produces sour section, and the arrangement height for producing sour section is lower than hydrolysis
Section, therefore this method is very suitable for mountainous region or knob, is built using the topographical elevation difference on mountainous region or hills.
This method comprises the following steps:
S1, the material wait ferment is sent into hydrolysis section after water sealed tank；
S2, in hydrolysis section, so that material is done bottom horizontal flow sheet by plug-flow propeller, flowing velocity is controlled in 1.5m/h-2m/
Between h；In hydrolysis section, pH value is controlled between 6.5-7.5, and pressure controls between 5KPa-10KPa, when mesophilic anaerobic digestion
Temperature controls between 40 DEG C -45 DEG C, and temperature control is at 55 DEG C -60 DEG C when thermophilic digestion；The biogas generated in hydrolysis section
Pass through Pipeline transport to biogas storage tank；In hydrolysis section, under the action of hydrolysis is with zymogenous bacteria, macromolecule organic is decomposed
For that can be dissolved in water and the absorption and utilization of anaerobe can be conducive to through the small-molecule substance of cell membrane；
S3, the material after hydrolysis section hydrolyzes are entered in the sour section of production by the effect of difference in height and plug-flow propeller,
In producing sour section, equally so that material is done bottom horizontal flow sheet by plug-flow propeller, flowing velocity control 1.2m/h-1.5m/h it
Between；It produces in sour section, pH value controls between 6.5-7.5, and pressure control temperature in 5KPa-10KPa, mesophilic anaerobic digestion controls
Between 35 DEG C -40 DEG C, temperature control is between 53 DEG C -57 DEG C when thermophilic digestion；It is same to produce the biogas generated in sour section
Pass through Pipeline transport to biogas storage tank；It produces in sour section, under the action of producing hydrogen, acetogen, the product of hydrolysis section is by into one
Step is converted into acetic acid, hydrogen, carbon dioxide and new cellular material；
S4, after producing sour section, be converted to H2、CO2Equally pass through the work of difference in height and plug-flow propeller with the material of acetic acid
With methane phase section is entered, same so that material is done bottom horizontal flow sheet by plug-flow propeller in methane phase section, flowing velocity is controlled
Between 0.5m/h-1.0m/h；In methane phase section, pH value control between 6.2-7.2, pressure control 5KPa-10KPa it
Between, when mesophilic anaerobic digestion temperature control at 30 DEG C -35 DEG C, thermophilic digestion temperature control between 48 DEG C -53 DEG C；It produces
The biogas generated in methane section equally passes through Pipeline transport to biogas storage tank；In methane phase section, under the action of methanogen,
It produces the substances such as acetic acid, hydrogen, the carbonic acid that sour section generates and is converted into methane, carbon dioxide and new cellular material；
A part of material is passed through the beginning of Matter Transfer Pipeline transport to hydrolysis section after the reaction of methane phase section by S5, material
It holds and continues successively to react through hydrolysis section, the sour section of production, methane phase section, another part material is delivered to admittedly by waste material discharge line
Liquid separator is separated by solid-liquid separation, wherein flowing into the ratio between material of material circulation line and waste material discharge line is 1.5-2:1.
Embodiment 2:
As shown in Figure 1, present embodiments providing a kind of buried segmentation pressure plug-flow anaerobism using the method for embodiment 1
Fermentation system comprising hydrolysis reactor 2, acidogenic reactor 3, methane-producing reactor 4, methane pipeline 5 and waste material discharge line
6。
First pipeline 1 of the material inlet of the hydrolysis reactor 2 with conveying to fermentation materials is connected to；The hydrolysis reactor
2 are configured with the first plug-flow propeller 21, and the first plug-flow propeller 21 is used for material from the material inlet of hydrolysis reactor 2 to object
Expect that export direction pushes.
The material inlet of the acidogenic reactor 3 is connected to the material outlet of the hydrolysis reactor 2, and acidogenic reactor
3 arrangement height is lower than hydrolysis reactor 2；The acidogenic reactor 3 is configured with the second plug-flow propeller 31, the second plug-flow propeller
31 for being pushed material from the material inlet of acidogenic reactor 3 to material outlet direction.
The material inlet of the methane-producing reactor 4 is connected to the material outlet of the acidogenic reactor 3, and methane phase is anti-
The arrangement height of device 4 is answered to be lower than acidogenic reactor 3；The acidogenic reactor 3 is configured with third plug-flow propeller 41, third plug-flow spiral shell
Paddle 41 is revolved to be used to push material from the material inlet of methane-producing reactor 4 to material outlet direction.
The methane pipeline 5 is used to generate in hydrolysis reactor 2, acidogenic reactor 3 and methane-producing reactor 4
Biogas is directed into biogas storage tank, and methane pipeline 5 includes three branch lines arranged side by side and a main pipe rail, three points arranged side by side
One end of bye-pass is connected to the top of the tail portion of hydrolysis reactor 2, acidogenic reactor 3 and methane-producing reactor 4 respectively, separately
One end is connected to main pipe rail, as shown in Figure 1.
The waste material discharge line 6 is connected to the material outlet of the methane-producing reactor 4, for the object after having reacted
Material is directed into solid-liquid separating machine.
This system further includes Matter Transfer pipeline 71, the beginning of the Matter Transfer pipeline 71 and the methane-producing reactor 4
End section connection, the tail end of Matter Transfer pipeline 71 is connected to the initial segment of the hydrolysis reactor 2；Matter Transfer pipeline 71
On be provided with reflux pump 72, reflux pump 72 provides power for flowing to tail end by the beginning of Matter Transfer pipeline 71 for material.Object
Material circulation line 71 can make the partial material after methane reactor 4 is reacted be back to hydrolysis reactor 2, continue hydrolysis-
The reaction of acid-methane phase is produced, is had an advantage that: (1) when material flow back, the bacterium such as hydrolytic bacteria, production hydrogen/acetogen in material
Kind can be also back to material in hydrolysis reactor 2, reuse strain, thus effectively shorten hydrolysis, produce acid
Time accelerates the hydrolysis rate of organic matter；(2) after material reflux, not sufficiently reactive material can be reacted again, make material
It can react abundant.In the present embodiment, it is 1.5-2:1 that material, which flows back with the ratio not flowed back,.
In addition, being equipped with water sealed tank 8 at the material inlet of the hydrolysis reactor 2, water sealed tank 8 is commonly used in biogas facility
A kind of safety device/structure, effect be prevent air enter reactor and guarantee reactor operating pressure it is constant.Institute
The the first plug-flow propeller 21 stated is driven by the first power mechanism 22 to be rotated, and the second plug-flow propeller 31 is by the second power mechanism 32
Driving rotation, third plug-flow propeller 41 is driven by third power mechanism 42 to be rotated.Each plug-flow propeller can be used material and stir
Commonly used a kind of material pushing mechanism in mixing equipment comprising main shaft and blade, main shaft, which is in a horizontal state, to be arranged and by corresponding
One end of reactor inner cavity extends to the other end, and main shaft is driven by corresponding power mechanism to be rotated, and power mechanism is installed on reaction
Outside device, blade is helical structure and extends to the other end by one end of main shaft around main shaft, and blade is fixedly connected with main shaft；
Motor or hydraulic power mechanism can be used in each power mechanism.
This system can be built using topographical elevation difference, particularly suitable for being built using the landform of mountainous region or knob
Make, can the slope surface by hydrolysis reactor 2, acidogenic reactor 3 and methane-producing reactor 4 along mountainous region or hills be embedded in earth's surface it
Under, after buried, each reactor can efficiently use underground heat and be kept the temperature, and the outer wall thermal insulation material and thickness of reactor can accordingly subtract
Few, compared with ground type anaerobism paddling process, heat loss can reduce by 50% or more.In addition, entire reaction is divided into mutually independent
After three sections, technological parameter is more controllable, and energy Discrete control, the conversion ratio of reaction also can be accordingly improved, the first of produced biogas
Alkane content also can be relatively high, and the content of the methane in sewage gas of generation can reach 70% or more, and the final conversion ratio of organic matter is reachable
75% or more.In the description of the present invention, term " connection ", " installation ", " fixation " etc. shall be understood in a broad sense, for example, " even
Connect " it may be fixed connection or may be dismantle connection, or integral connection；It can be directly connected, it can also be in
Between medium be indirectly connected.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. plug-flow anaerobic fermentation system is forced in buried segmentation characterized by comprising
Hydrolysis reactor (2), first pipeline (1) of the material inlet of the hydrolysis reactor (2) with conveying to fermentation materials are connected to；
The hydrolysis reactor (2) is configured with the first plug-flow propeller (21), and the first plug-flow propeller (21) is used for material is anti-by hydrolyzing
The material inlet of device (2) is answered to push to material outlet direction；
The material inlet of acidogenic reactor (3), the acidogenic reactor (3) is connected to the material outlet of the hydrolysis reactor (2),
And the arrangement height of acidogenic reactor (3) is lower than hydrolysis reactor (2)；The acidogenic reactor (3) is configured with the second plug-flow spiral
Paddle (31), the second plug-flow propeller (31) to material outlet direction for being pushed away material from the material inlet of acidogenic reactor (3)
It is dynamic；
Methane-producing reactor (4), the material inlet of the methane-producing reactor (4) and the material outlet of the acidogenic reactor (3)
Connection, and the arrangement height of methane-producing reactor (4) is lower than acidogenic reactor (3)；The acidogenic reactor (3) is pushed away configured with third
It flows propeller (41), third plug-flow propeller (41) to material for being gone out material from the material inlet of methane-producing reactor (4)
Mouth direction pushes；
Methane pipeline (5), the methane pipeline (5) are used to react hydrolysis reactor (2), acidogenic reactor (3) and methane phase
The biogas generated in device (4) is directed into biogas storage tank；
Waste material discharge line (6), the waste material discharge line (6) are connected to the material outlet of the methane-producing reactor (4), are used for
Material after having reacted is directed into solid-liquid separating machine.
2. plug-flow anaerobic fermentation system is forced in buried segmentation according to claim 1, which is characterized in that further include material
The beginning of circulation line (71), the Matter Transfer pipeline (71) is connected to the end of the methane-producing reactor (4) section, and material follows
The tail end on endless tube road (71) is connected to the initial segment of the hydrolysis reactor (2)；Matter Transfer pipeline is provided with reflux on (71)
It pumps (72), reflux pump (72) provides power for flowing to tail end by the beginning of Matter Transfer pipeline (71) for material.
3. plug-flow anaerobic fermentation system is forced in buried segmentation according to claim 1, which is characterized in that the hydrolysis is anti-
It answers and is equipped with water sealed tank (8) at the material inlet of device (2).
4. plug-flow anaerobic fermentation system is forced in buried segmentation according to claim 1, which is characterized in that described first
Plug-flow propeller (21) is driven by the first power mechanism (22) to be rotated, and the second plug-flow propeller (31) is by the second engine
Structure (32) driving rotation, the third plug-flow propeller (41) is driven by third power mechanism (42) to be rotated.
5. plug-flow anaerobic fermentation method is forced in buried segmentation, which is characterized in that this method is using being sequentially connected and independently of each other
Hydrolysis section, produce sour section, methane phase section anaerobic fermentation carried out to material, this method comprises the following steps:
S1, the material wait ferment is sent into hydrolysis section after water sealed tank；
S2, in hydrolysis section, so that material is done bottom horizontal flow sheet by plug-flow propeller, flowing velocity control 1.5m/h-2m/h it
Between；In hydrolysis section, pH value is controlled between 6.5-7.5, and pressure controls between 5KPa-10KPa, temperature when mesophilic anaerobic digestion
Control is between 40 DEG C -45 DEG C, and temperature control is at 55 DEG C -60 DEG C when thermophilic digestion；The biogas generated in hydrolysis section passes through
Pipeline transport is to biogas storage tank；
S3, the material after hydrolysis section hydrolyzes enter in the sour section of production, in producing sour section, equally make object by plug-flow propeller
Material does bottom horizontal flow sheet, and flowing velocity controls between 1.2m/h-1.5m/h；It producing in sour section, pH value controls between 6.5-7.5,
In 5KPa-10KPa, mesophilic anaerobic digestion, temperature control is between 35 DEG C -40 DEG C for pressure control, temperature when thermophilic digestion
Control is between 53 DEG C -57 DEG C；It produces the biogas generated in sour section and equally passes through Pipeline transport to biogas storage tank；
S4, after producing sour section, be converted to H2、CO2Methane phase section is entered with the material of acetic acid, it is same logical in methane phase section
Crossing plug-flow propeller makes material do bottom horizontal flow sheet, and flowing velocity controls between 0.5m/h-1.0m/h；In methane phase section, pH value
Between 6.2-7.2, pressure is controlled between 5KPa-10KPa for control, when mesophilic anaerobic digestion temperature control at 30 DEG C -35 DEG C,
Temperature control is between 48 DEG C -53 DEG C when thermophilic digestion；The biogas generated in methane phase section equally passes through Pipeline transport extremely
Biogas storage tank；
S5, material through methane phase section reaction after, by a part of material by Matter Transfer Pipeline transport to the beginning of hydrolysis section after
It is continuous successively to be reacted through hydrolysis section, the sour section of production, methane phase section, another part material is delivered to solid-liquid point by waste material discharge line
It disembarks and is separated by solid-liquid separation.
6. plug-flow anaerobic fermentation method is forced in buried segmentation according to claim 5, which is characterized in that in step S5
In, for material after the reaction of methane phase section, flowing into the ratio between material of material circulation line and waste material discharge line is 1.5-2:1.
7. plug-flow anaerobic fermentation method is forced in buried segmentation according to claim 5, which is characterized in that the hydrolysis
Section, the sour section of production and methane phase Duan Jun are embedded in underground, and the arrangement height bottom of methane phase section produces sour section, produces the arrangement height of acid section
Lower than hydrolysis section.
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