CN107312704A - A kind of dry type anaerobic fermentation system and method for being applicable wide-size distribution material production biogas - Google Patents
A kind of dry type anaerobic fermentation system and method for being applicable wide-size distribution material production biogas Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000009826 distribution Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000004151 fermentation Effects 0.000 claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000011368 organic material Substances 0.000 claims 1
- 238000010792 warming Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000001351 cycling effect Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 16
- 210000003608 fece Anatomy 0.000 description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 6
- 239000010871 livestock manure Substances 0.000 description 6
- 239000010902 straw Substances 0.000 description 6
- 239000010791 domestic waste Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000002054 inoculum Substances 0.000 description 5
- 240000008042 Zea mays Species 0.000 description 4
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 4
- 235000009973 maize Nutrition 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- 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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- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- 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
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
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- 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
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- 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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Abstract
The invention discloses a kind of dry type anaerobic fermentation system and method for being applicable wide-size distribution material production biogas, the system mainly includes：Solar energy greenhouse, spiral heating batcher, boiler, auger heating storehouse, plunger type charger, oil cylinder, fermentation tank, spiral discharging machine and scraper plate discharging machine, material temperature in the solar energy greenhouse is maintained at more than zero degree, 30~35 DEG C are warming up in into spiral heating batcher, material delivers to auger heating storehouse in the presence of the spiral heating batcher, 38~43 DEG C are warming up in into auger heating storehouse, material keeps 40~43 DEG C in the fermentation tank and completes to ferment in special time, most organic residue cycling utilizes and produces biogas at last.Therefore, the present invention provides the dry type anaerobic fermentation system and method that a kind of material concentration height, particle size range are wide, the low, waste liquid of power consumption produces biogas less.
Description
Technical field
The present invention relates to regenerative resource exploitation and environmental protection technical field, especially a kind of applicable wide-size distribution material life
Produce the dry type anaerobic fermentation system and method for biogas.
Background technology
Under energy shortage, global warming, the overall background of the deterioration of the ecological environment, energy-saving and emission-reduction, efficiently utilization resource and hair
Opening up new energy turns into the global task of top priority.With the increase developed rapidly with population of industrial and agricultural production, agricultural crop straw,
Feces of livestock and poultry and domestic waste these discarded objects are with average annual 5%~10% speed increase.The place of organic solid castoff
Put improper, not only cause the waste of resource, while also polluting natural environment.
In the technology of numerous solid organic castoff recyclings, biogas fermentation technology is the focus studied both at home and abroad
One of with prior development direction.There are nearly 100,000 of all kinds of big-and-middle-sized biogas engineerings in China so far.But, in biogas engineering
Find that liquid fermentation is primarily present problems with actual motion：(1) due to the total solid of fermentation raw material in liquid fermentation process
Content (TS) 5~12%, needs additional substantial amounts of fermentation water before fermentation, then a large amount of biogas slurries produced with biogas, which lack, closes
The effective bottleneck problem dissolved approach and be increasingly becoming the popularization of restriction biogas technology and the formation of biological flue gas industry of reason；(2)
Screw pump is used the input and output material of liquid-type fermentation more, and screw pump is to material requirement relatively strict and high equipment cost, it is necessary to set
Setting pot, the rigid impurity such as finger stone in organic matter or excrement is removed；(3) the additional fermentation water of liquid fermentation, will certainly
Increase the volume of anaerobic reactor, maintain fermentation to heat energy consumption necessary to being smoothed out and can greatly raise, this to our in winters
The operating cost of the biogas engineering of cold northern area can be greatly increased.
The content of the invention
To overcome drawbacks described above, the technical problem to be solved in the present invention is to provide a kind of material concentration is high, particle size range is wide,
The low, waste liquid that consumes energy produces the dry type anaerobic fermentation system and method for biogas less.
The present invention is achieved through the following technical solutions goal of the invention：
A kind of dry type anaerobic fermentation system for being applicable wide-size distribution material production biogas, including solar energy greenhouse 1, spiral liter
Warm batcher 2, boiler 5, auger heating storehouse 6, plunger type charger 8, oil cylinder 9, fermentation tank 10, spiral discharging machine 15,
Scraper plate discharging machine 16；
Wherein, described spiral heating batcher 2, its left end is connected with the bottom of solar energy greenhouse 1, its right-hand member and spiral
The stirring heating top of storehouse 6 is connected, and the described auger heating bottom of storehouse 6 is connected with the plunger type charger 8, plunger
The left end of formula charger 8 is connected with oil cylinder 9, and the right-hand member of plunger type charger 8 is connected with the top second charging aperture 11 of fermentation tank 10, and second
Enter fermentation tank 10 provided with the control material of first switch valve 12 at charging aperture 11, the crown center of fermentation tank 10 is provided with exhaust outlet 13,
The biogas that fermentation process is produced is controlled to discharge by exhaust outlet 13 by second switch valve 14, the bottom of fermentation tank 10 and spiral discharging
Machine 15 is connected, and spiral discharging machine 15 is connected with scraper plate discharging machine 16, passes through the clinker after the completion of being fermented in fermentation tank 10 ripe
Discharge material outlet 17.
A kind of dry type anaerobic fermentation system for being applicable wide-size distribution material production biogas, the spiral heating batcher 2 leads to
Cross first circulation hot-water line 3 to connect with boiler 5, auger heating storehouse 6 is connected by second circulation hot-water line 7 with boiler 5, the
One circulating hot water pipe 3, second circulation hot-water line 7 and the composition heat circulating system of boiler 5 play a part of heating to material.
A kind of dry type anaerobic fermentation system for being applicable wide-size distribution material production biogas, the described auger heating material of storehouse 6
Cone-type spiral 19 vertically is vertically arranged in storehouse, plays a part of stirring and to the feeding of plunger type batcher 8.
A kind of dry type anaerobic fermentation system for being applicable wide-size distribution material production biogas, it is characterised in that described spiral is stirred
High concentration and the wide material of particle size range can be conveyed by mixing heating storehouse 6, and allow larger hard debris to exist.
A kind of dry type anaerobic fermentation system for being applicable wide-size distribution material production biogas, it is characterised in that spiral discharging machine
15 are arranged on the bottom of fermentation tank 10, it is ensured that material is in the even drop down of fermentation tank 10.
A kind of method that dry type anaerobic fermentation system for being applicable wide-size distribution material produces biogas, comprises the following steps：
(1) wide-size distribution material is put into solar energy greenhouse 1, material is tentatively heated up in the solar energy greenhouse 1；
(2) the wide-size distribution material in solar energy greenhouse 1 is sent into spiral heating batcher 2 by first charging aperture 4,
Wide-size distribution material carries out the heating of first stage in spirally heating batcher 2, and 30~35 DEG C are risen to by 0 degree；Material is in spiral shell
Risen in rotating heating batcher 2 after set point of temperature and enter auger and heat up storehouse 6, carry out the heating of second stage, by 30~
35 DEG C rise to 38~43 DEG C；
(3) it will heat up to 38~43 DEG C of wide-size distribution material by auger heating storehouse 6 and plunger type charger 8 through protecting
Warm pipeline 18 is delivered in fermentation tank 10；
(4) wide-size distribution material is fermented in fermentation tank 10 with 40~43 DEG C of fermentation temperature, fermentation time 20~
25d, in the presence of the spiral discharging machine 15 that the bottom of fermentation tank 10 is set, wide-size distribution material even drop down in fermentation tank 10；
(5) biogas residue that fermentation is completed pushes to scraper plate discharging machine 16 by spiral discharging machine 15, is discharged by clinker outlet 17
Biogas residue clinker.
A kind of method that dry type anaerobic fermentation system for being applicable wide-size distribution material produces biogas, it is characterised in that described
Material total solid mass percent TS >=20%.
A kind of method that dry type anaerobic fermentation system for being applicable wide-size distribution material produces biogas, it is characterised in that granularity model
Enclose for 0~5cm.
Advantages of the present invention is as follows：
The beneficial effects of the invention are as follows：Compared with existing biogas fermentation technology, there are following several advantages：(1) to organic
The tolerance of material is higher, can convey high concentration and the larger material of particle size range, can tolerate greatly compared to traditional screw pump
The solids of block and long stapled material；(2) present invention is heated up using outside tank body, and the thermal efficiency is improved while energy consumption is reduced；
(3) agitating device is not separately provided in tank body of the present invention, energy consumption is reduced；(4) present invention is using fermenter base when discharging
Spiral discharging machine and scraper plate discharging machine are combined, it is to avoid the impurity such as sand reduces clear tank number of times, reduction in tank internal deposition
Labor intensity；(5) present invention generation biogas slurry is few, it is to avoid the problem of subsequently biogas slurry treatment is difficult.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation：
Fig. 1 is dry type anaerobic fermentation system schematic diagram；
Wherein：Solar energy greenhouse 1, spiral heating batcher 2, first circulation hot-water line 3, first charging aperture 4, boiler 5,
Auger heating storehouse 6, second circulation hot-water line 7, plunger type charger 8, oil cylinder 9, fermentation tank 10, second charging aperture 11, the
One switch valve 12, exhaust outlet 13, second switch valve 14, spiral discharging machine 15, scraper plate discharging machine 16, clinker outlet 17, insulation
Pipeline 18, cone-type spiral 19.
Embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not by embodiment
Limitation, if the person skilled in the art in the field according to the invention described above content the present invention is made some it is nonessential improve
And adjustment, still fall within protection scope of the present invention.
Embodiment 1
Anaerobic dry fermentation is carried out using pig manure and maize straw as mixed fermentation raw material
The size-reduced machine of maize straw is crushed to particle diameter between 4~5mm, pig manure：Maize straw≤3:1, pig manure and straw
First time heating is carried out after stalk is well mixed in solar energy greenhouse, then is delivered to spiral heating batcher feeding auger
Heat up in the feed bin in storehouse.Material is warming up to 35 DEG C for the second time in spirally heating batcher, and heating mode is using circulation
Hot water is realized by tube wall chuck；
Material continues to heat up in the feed bin that auger heats up storehouse, rises to 43 DEG C, while heating, after fermentation
Clinker is back to as inoculum in the feed bin in auger heating storehouse, is mixed with newly entering raw material, carries out anaerobic fermentation.By
The vertical vertical taper spiral being arranged in feed bin plays a part of stirring and to plunger type charger feeding, while also functioning to thing
Expect the effect ground.
Material is heated up in the warm pipeline in storehouse to fermentation tank by auger, and whole course of conveying ensures that temperature is damaged
Lose within 2 DEG C.
According to material characteristic, the residence time of raw material in dry fermentation tank is controlled in 25d；
Material is fermented in fermentation tank with 40 DEG C of fermentation temperature, it is ensured that fermentation lasts aerogenesis and fermentation period
It is short.Biogas production is as shown in table 1.
Table 1：Biogas situation is produced using pig manure and maize straw as fermentation raw material
As can be seen from Table 1, pig manure and mixed stalk raw material after being fermented using this technique, are individually done than pig manure and stalk
Fermentation methane volume gas production has been respectively increased 27.3%, 18.5%, and volume gas production has been respectively increased 37.3%, 9.5%.Say
Bright technique can significantly improve the aerogenesis effect of anaerobic dry fermentation.
Embodiment 2
Dry-type anaerobic fermentation is carried out using organic domestic waste as fermentation raw material
The sludge for canned 1/3 volume of fermenting makes methane backeria raised growth as inoculum.
House refuse can carry out first time heating after coarse fraction in solar energy greenhouse, then be delivered to spiral heating
In the feed bin in batcher feeding auger heating storehouse.Material is warming up to 33 for the second time in spirally heating batcher
DEG C, heating mode is realized using circulating hot water by tube wall chuck.
Organic domestic waste is continuously heating to 42 DEG C, while heating in the feed bin that auger heats up storehouse, by sludge
It is back in feed bin, is mixed with newly entering raw material as inoculum.
Auger heating storehouse can convey the material (TS >=20%) and granularity of high concentration in the larger context, and
The presence of relatively large hard debris can be allowed, traditional plunger pump problem too high to material requirement is solved.
According to the material characteristic of house refuse, material, with 42 DEG C of fermentations, controls the raw material in fermentation tank to stop in fermentation tank
It is 25d to stay the time.Biogas production is as shown in table 2.
Table 2：Biogas situation is produced using organic domestic waste as fermentation raw material
As can be seen from Table 2, the organic domestic waste raw material after being fermented using this technique, than common dry fermentation methane volume
Gas production improves 22.2%, and methane volume gas production improves 24.4%.Illustrate that using this technique organic life can be significantly improved
Rubbish living carries out the aerogenesis effect of dry fermentation anaerobic fermentation.
Embodiment 3
Anaerobic dry fermentation is carried out using cow dung as fermentation raw material
Pass through the batcher that spirally heats up, auger heating storehouse conveying 1/4 using the clinker fermented as inoculum
The clinker of fermenter volume；
Cow dung is warming up to 30 DEG C by the batcher that spirally heats up, auger heating storehouse is then sent to and is mixed
Heating regulation is to 38 DEG C, while heating, and the clinker after fermentation is back to the material in auger heating storehouse as inoculum
In storehouse, mixed with newly entering raw material, carry out anaerobic fermentation.Stirring is played by the vertical vertical taper spiral being arranged in feed bin
With the effect to plunger type charger feeding；
According to cow dung material characteristic, temperature of the material in fermentation tank is 43 DEG C, and control material is in vertical type anaerobic fermentation tank
Interior residence time of raw material is in 20d, and biogas production is as shown in table 3.
Table 3：Biogas situation is produced using cow dung as fermentation raw material
As can be seen from Table 3, fermented, carried than common dry fermentation methane volume gas production using this technique by raw material of cow dung
It is high by 27.5%, improve 36.2% than methane volume gas production after common dry fermentation technique.Illustrate to use this technique and system
The aerogenesis effect of anaerobic fermentation can be significantly improved by carrying out dry fermentation to cow dung.
Claims (8)
1. a kind of dry type anaerobic fermentation system for being applicable wide-size distribution material production biogas, it is characterised in that including solar energy greenhouse
(1), spirally heat up batcher (2), boiler (5), auger heating storehouse (6), plunger type charger (8), oil cylinder (9), hair
Fermentation tank (10), spiral discharging machine (15), scraper plate discharging machine (16)；
Wherein, described spiral heating batcher (2), its left end is connected with solar energy greenhouse (1) bottom, its right-hand member and spiral
Stirring heating storehouse (6) top connection, and described auger heating storehouse (6) bottom and the plunger type charger (8) are even
Logical, plunger type charger (8) left end is connected with oil cylinder (9), and plunger type charger (8) right-hand member enters with the top of fermentation tank (10) second
Material mouth (11) is connected, and second charging aperture (11) place enters fermentation tank (10), fermentation tank provided with first switch valve (12) control material
(10) crown center is provided with exhaust outlet (13), and the biogas that fermentation process is produced passes through exhaust outlet by second switch valve (14) control
(13) discharge, fermentation tank (10) bottom is connected with spiral discharging machine (15), spiral discharging machine (15) and scraper plate discharging machine
(16) connect, the clinker after the completion of being fermented in fermentation tank (10) is exported (17) by clinker and discharge.
2. the dry type anaerobic fermentation system according to claim 1 for being applicable wide-size distribution material production biogas, it is characterised in that
The spiral heating batcher (2) is connected by first circulation hot-water line (3) with boiler (5), and auger heating storehouse (6) is led to
Cross second circulation hot-water line (7) to connect with boiler (5), first circulation hot-water line (3), second circulation hot-water line (7) and boiler (5)
Composition heat circulating system plays a part of heating to material.
3. the dry type anaerobic fermentation system according to claim 1 for being applicable wide-size distribution material production biogas, it is characterised in that
Cone-type spiral (19) vertically is vertically arranged in described auger heating storehouse (6) feed bin, stirring is played and is fed to plunger type
The effect of machine (8) feeding.
4. the dry type anaerobic fermentation system according to claim 1 for being applicable wide-size distribution material production biogas, it is characterised in that
Described plunger type batcher (8) can convey high concentration and the wide material of particle size range, and allow larger hard debris to deposit
.
5. the dry type anaerobic fermentation system according to claim 1 for being applicable wide-size distribution material production biogas, it is characterised in that
Spiral discharging machine (15) is arranged on fermentation tank (10) bottom, it is ensured that material is in fermentation tank (10) even drop down.
6. a kind of method that dry type anaerobic fermentation system for being applicable wide-size distribution material produces biogas, is produced using system above
Biogas step is as follows：
(1) wide-size distribution material is put into solar energy greenhouse (1), material is tentatively heated up in the solar energy greenhouse (1)；
(2) the wide-size distribution material in solar energy greenhouse (1) is passed through into the spiral heating batcher (2) of first charging aperture (4) feeding
Interior, wide-size distribution material carries out the heating of first stage in spirally heating batcher (2), and 30~35 DEG C are risen to by 0 degree；Material
Risen in spirally heating batcher (2) and enter auger heating storehouse (6) after set point of temperature, carry out the liter of second stage
Temperature, 38~43 DEG C are risen to by 30~35 DEG C；
(3) it will heat up to 38~43 DEG C of wide-size distribution material by auger heating storehouse (6) and plunger type charger (8) through protecting
Warm pipeline (18) is delivered in fermentation tank (10)；
(4) wide-size distribution material is fermented in fermentation tank (10) with 40~43 DEG C of fermentation temperature, 20~25d of fermentation time,
In the presence of the spiral discharging machine (15) that fermentation tank (10) bottom is set, wide-size distribution organic materials is uniform in fermentation tank (10)
Fall；
(5) biogas residue that fermentation is completed pushes to scraper plate discharging machine (16) by spiral discharging machine (15), and exporting (17) by clinker arranges
Go out biogas residue clinker.
7. the method that the dry type anaerobic fermentation system according to claim 5 for being applicable wide-size distribution material produces biogas, it is special
Levy and be, described material total solid mass percent TS >=20%.
8. the method that the dry type anaerobic fermentation system according to claim 5 for being applicable wide-size distribution material produces biogas, it is special
Levy and be, particle size range is 0~5cm.
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Cited By (1)
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| CN113979796A (en) * | 2021-12-02 | 2022-01-28 | 塔里木大学 | Compost treatment device and method |
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| CN107312704B (en) | 2020-06-05 |
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