CN106754286A - A kind of feedstock pre-processing system and method for preparing biogas - Google Patents
A kind of feedstock pre-processing system and method for preparing biogas Download PDFInfo
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- CN106754286A CN106754286A CN201710078389.5A CN201710078389A CN106754286A CN 106754286 A CN106754286 A CN 106754286A CN 201710078389 A CN201710078389 A CN 201710078389A CN 106754286 A CN106754286 A CN 106754286A
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- raw material
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- stirring pool
- blanking
- doffer
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- 238000007781 pre-processing Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 123
- 238000003756 stirring Methods 0.000 claims abstract description 70
- 239000002002 slurry Substances 0.000 claims abstract description 44
- 230000011218 segmentation Effects 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 abstract description 15
- 239000007787 solid Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 210000003608 fece Anatomy 0.000 description 6
- 239000010871 livestock manure Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005138 cryopreservation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- C12M45/02—Means for pre-treatment of biological substances by mechanical forces; Stirring; Trituration; Comminuting
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
-
- 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 provides a kind of feedstock pre-processing system for preparing biogas, including：Stirring pool, the stirring pool is provided with agitating device and former slurry outlet；The doffer above the stirring pool is arranged on, the doffer is vertically set, top is blanking import, bottom exports for blanking, the blanking outlet is communicated with stirring pool；The doffer inner side is provided with shower nozzle；The raw material segmentation conveying device that discharging opening is communicated with the blanking import, the raw material segmentation conveying device is provided with discharging opening and charging aperture；The raw material storage device communicated with the charging aperture.Compared with prior art, feedstock pre-processing system provided by the present invention for preparing biogas is conveyed using segmentation, and the unit raw material to segmentation conveying before stirring carries out water spray treatment, so as to not only make former pulp density accurate, and make follow-up whipping process be easy to carry out, so as to reduce the power consumption of system, improve system effectiveness.
Description
Technical field
The present invention relates to methane engineering technology field, more specifically, be related to it is a kind of pre- for preparing the raw material of biogas
Processing system and method.
Background technology
The anaerobic fermentation of biogas refers to organic substance, such as people and animals' poultry manure, stalk, weeds, in certain moisture, temperature
Under degree and anaerobic condition, by the way that species is various, the catabolism of enormous amount and the different each quasi-microorganism of function, most end form
Into the complicated Biochemical processes of the mixed gases such as methane and carbon dioxide.
At present, the pretreatment of raw material in biogas engineering running --- stirring link with slurry, has for biogas engineering
Play the role of very important, the most manpowers and power consumption in biogas engineering are all in pretreatment of raw material link, engineering
Running except pre-process link in addition to, with little need for manual intervention with input.Shown in Figure 1, Fig. 1 is to use in the prior art
In the structural representation of the feedstock pre-processing system for preparing biogas, wherein, 1 is stirring pool, and 2 is mixer, and 3 is charging aperture.
But, use it is above-mentioned in the prior art be used for prepare biogas feedstock pre-processing system be stirred it is with slurry exist with
Lower shortcoming：
First, system dynamic consumption is big, efficiency is low.Specifically, the feeding manner one of above-mentioned raw materials pretreatment system
As be divided into two kinds (1) by 5m3The excrement of left and right directly pours into stirring pool；(2) sewage pump impact by way of, a little general
Excrement pours stirring pool.The common shortcoming of two methods is and the mixer because stirring pool is relatively large in diameter (generally higher than 3m)
The length range of blade is limited, in order to improve mixing effect it is necessary to increase stirring acc power, expends a large amount of electric power；In reality
In running, stirring acc power is usually 5.5KW or so, and rotating speed is only 30r/min, if stirring 100m3Raw material is starched, and is needed
Stir more than 3h, inefficiency.Additionally, the use of sewage pump can also improve the power consumption of system in feeding manner (2).
Secondly, the concentration of raw material slurry is difficult to realize accurate.Above-mentioned feeding manner for transporting the raw material before stirring pool to every time
Volume will have accurate measurement, and feeding manner (2) due to being repeatedly charging, and pour pond using water, for amount of flush water and raw material
Amount is all difficult control, ultimately causes the statistics of inlet amount daily to anaerobic fermentation tank, increases difficulty.
Again, feed intake for convenience, stirring pool is generally arranged on underground by the raw material pretreatment process of prior art；And be
Control stirring pool diameter, usual pond is deep relatively deep (underground 3m or so), and this just makes by the sand and impurity in the raw material that stirs all
Bottom of pond is fallen to, it is necessary to manual cleaning, due to the influence of depth and smell, work difficulty is very big.
Therefore it provides a kind of energy consumption is small, efficiency high, being capable of precise control original pulp density and the low original of operation expense
Material pretreatment system, as those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
In view of this, it is an object of the invention to provide a kind of feedstock pre-processing system and method for preparing biogas,
The feedstock pre-processing system energy consumption for providing of the invention is small, efficiency high, being capable of precise control original pulp density and operation expense
It is low.
The invention provides a kind of feedstock pre-processing system for preparing biogas, including：
Stirring pool, the stirring pool is provided with agitating device and former slurry outlet；
The doffer above the stirring pool is arranged on, the doffer is vertically set, and top is blanking
Import, bottom is exported for blanking, and the blanking outlet is communicated with stirring pool；The doffer inner side is provided with shower nozzle；
The raw material segmentation conveying device that discharging opening is communicated with the blanking import, the raw material segmentation conveying device is provided with out
Material mouth and charging aperture；
The raw material storage device communicated with the charging aperture.
Preferably, the power of the agitating device is 1KW~2KW.
Preferably, the number of the shower nozzle is 1~10.
Preferably, the raw material segmentation conveying device is Rotatruder.
Preferably, the power of the Rotatruder is 3KW~5KW.
Preferably, the former slurry outlet is provided with gate valve.
Present invention also offers a kind of preprocessing method of raw materials of the feedstock pre-processing system described in above-mentioned technical proposal, bag
Include following steps：
A) segmentation conveying will be successively carried out for preparing the raw material of biogas, obtains unit raw material；
B) the unit raw material for obtaining step a) carries out water spray treatment, then is stirred, and obtains raw material slurry.
Preferably, the speed that conveying is segmented described in step a) is 10m3/ h~20m3/h。
Preferably, sprayed water described in step b) treatment flow be 20m3/ h~40m3/h。
Preferably, the rotating speed for being stirred described in step b) is 1000r/min~1500r/min, and the time is 1h~5h.
The invention provides a kind of feedstock pre-processing system for preparing biogas, including：Stirring pool, the stirring pool sets
There are agitating device and former slurry outlet；The doffer above the stirring pool is arranged on, the doffer is vertically
Set, top is blanking import, bottom exports for blanking, the blanking outlet is communicated with stirring pool；The doffer inner side
It is provided with shower nozzle；The raw material segmentation conveying device that discharging opening is communicated with the blanking import, the raw material segmentation conveying device sets
There are discharging opening and charging aperture；The raw material storage device communicated with the charging aperture.Compared with prior art, the use that the present invention is provided
Conveyed using segmentation in the feedstock pre-processing system for preparing biogas, and the unit raw material that segmentation is conveyed is sprayed water before stirring
Treatment, so as to not only make former pulp density accurate, and makes follow-up whipping process be easy to carry out, so that the power for reducing system disappears
Consumption, raising system effectiveness.Test result indicate that, the feedstock pre-processing system provided by the present invention for preparing biogas carries out raw material
After pretreatment, former solids slurry TS concentration can accurately reach the 6% of requirement, and daily total amount with slurry is 100m3~150m3。
In addition, the present invention provide feedstock pre-processing system convenience with slurry, save a large amount of manpowers, operation expense is low.
Brief description of the drawings
Fig. 1 be in the prior art be used for prepare biogas feedstock pre-processing system structural representation；
Fig. 2 is the structural representation for preparing the feedstock pre-processing system of biogas provided in an embodiment of the present invention；
Fig. 3 is the course of work schematic diagram of the feedstock pre-processing system for preparing biogas that the embodiment of the present invention 1 is provided.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme is clearly and completely described, it is clear that institute
The embodiment of description is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, belongs to this hair
The scope of bright protection.
The invention provides a kind of feedstock pre-processing system for preparing biogas, including：
Stirring pool, the stirring pool is provided with agitating device and former slurry outlet；
The doffer above the stirring pool is arranged on, the doffer is vertically set, and top is blanking
Import, bottom is exported for blanking, and the blanking outlet is communicated with stirring pool；The doffer inner side is provided with shower nozzle；
The raw material segmentation conveying device that discharging opening is communicated with the blanking import, the raw material segmentation conveying device is provided with out
Material mouth and charging aperture；
The raw material storage device communicated with the charging aperture.
Refer to Fig. 2, Fig. 2 is provided in an embodiment of the present invention to show for preparing the structure of the feedstock pre-processing system of biogas
It is intended to, wherein, 1 is stirring pool, and 2 is agitating device, and 3 is former slurry outlet, and 4 is doffer, and 5 is blanking import, and 6 is blanking
Outlet, 7 is shower nozzle, and 8 is that raw material is segmented conveying device, and 9 is discharging opening, and 10 is charging aperture, and 11 is raw material storage device.
In the present invention, the stirring pool (1) is with slurry for the raw material of biogas engineering to be stirred.In the present invention,
The stirring pool (1) is preferably formed using pond well known to those skilled in the art transformation, and the diameter in the pond is preferably 1m
~3m, more preferably 2m, the highly preferred of the pond is 0.5m~2m, more preferably 1m.
In the present invention, the stirring pool (1) is provided with agitating device (2) and former slurry outlet (3).In the present invention, institute
Stating agitating device (2) includes motor, the rotary shaft being connected with the motor, and the blade set along axisymmetry, the electricity
Machine is used to provide electric power, is rotated rotary shaft, and then drives blade rotation, realizes stirring.The present invention is to the stirring dress
Put position that (2) set in stirring pool to be not particularly limited, using rotary shaft well known to those skilled in the art perpendicular to stirring
Mix the setting of pond (1) bottom surface and rotary shaft is set at an angle with stirring pool (1) bottom surface.In the present invention, the stirring
The power of device (2) is preferably 1KW~2KW, more preferably 1.5KW.The present invention does not have special limit to the length of the rotary shaft
System, can realize that blade normally rotates.In the present invention, the number of the blade is preferably 1~3, the leaf
The diameter of piece is preferably 0.3m~1m, more preferably 0.5m.
In the present invention, the former slurry outlet (3) for will be obtained after pretreatment raw material slurry discharge stirring pool (1).
In the present invention, the former slurry outlet (3) is provided with gate valve, for the discharge for controlling raw material to starch；The present invention does not have to the gate valve
Have specifically limited, can such as use DN200 gate valves well known to those skilled in the art.In the present invention, the former slurry outlet (3)
Stirring pool (1) bottom is arranged on, the discharge for being easy to raw material to starch.
In the present invention, stirring pool (1) top is provided with doffer (4), and the doffer (4) is along vertical side
To setting, top is blanking import (5), and bottom is blanking outlet (6), and blanking outlet (6) communicates with stirring pool (1).
In the present invention, raw material can enter stirring pool (1), the blanking from blanking outlet (6) under gravity from blanking import (5)
The diameter of device (4) is less than stirring pool (1) diameter, can make the raw material that doffer (4) falls completely into stirring pool (1).
In the present invention, doffer (4) inner side is provided with shower nozzle (7), and the shower nozzle (7) can realize water spray,
During in raw material by doffer (4), water spray treatment is carried out to raw material.In the present invention, the shower nozzle (7)
Number is preferably 1~10, more preferably 4~6.The present invention is arranged on doffer (4) inner side to the shower nozzle (7)
Particular location be not particularly limited, it is preferred to use vertically spiral set.
In the present invention, the doffer (4) is segmented conveying device (8) and is connected with raw material.The raw material segmentation conveying
Device (8) is provided with discharging opening (9) and charging aperture (10), and the discharging opening (9) communicates with blanking import (5).In the present invention, institute
State raw material segmentation conveying device (8) and be preferably Rotatruder, helical blade is provided with the Rotatruder, can be in original
Raw material is averagely segmented in material course of conveying.In the present invention, the power of the Rotatruder is preferably 3KW~5KW, more excellent
Elect 4KW as.
In the present invention, the charging aperture (10) communicates with the raw material storage device (11), the raw material storage device
(11) can enter raw material segmentation conveying device (8) through charging aperture (10) carries out segment transmissions.In the present invention, the raw material storage
Cryopreservation device (11) is preferably hopper, and it is not specifically limited to this for the present invention.In the present invention, the hopper is preferably provided at ground
Under, it is easy to raw material to load.
According to the feedstock pre-processing system for preparing biogas that the embodiments of the present invention are provided, conveyed using segmentation,
And the unit raw material to segmentation conveying before stirring carries out water spray treatment, so as to not only make former pulp density accurate, and after making
Continuous whipping process is easy to carry out, so as to reduce the power consumption of system, improve system effectiveness.The embodiment of the present invention course of work is such as
Under：
First, biogas engineering raw material is filled up into raw material storage device (11), starts raw material and be segmented conveying device (8), raw material
Entering segmentation conveying device (8) through charging aperture (10) carries out segmentation conveying, and the unit raw material obtained after segmentation is constantly delivered to out
Material mouth (9).
Secondly, shower nozzle (7) water spray is started, the unit to entering doffer (4) through blanking import (5) by discharging opening (9)
Raw material carries out water spray treatment, and the unit raw material after water spray treatment enters stirring pool (1) through blanking outlet (6).
Again, start agitating device (2), the raw material in stirring pool (1) is stirred, obtain raw material slurry.
Finally, former slurry outlet (3) discharge raw material slurry is opened, pretreatment of raw material is completed.
Present invention also offers a kind of preprocessing method of raw materials of the feedstock pre-processing system described in above-mentioned technical proposal, bag
Include following steps：
A) segmentation conveying will be successively carried out for preparing the raw material of biogas, obtains unit raw material；
B) the unit raw material for obtaining step a) carries out water spray treatment, then is stirred, and obtains raw material slurry.
The present invention will successively carry out segmentation conveying for preparing the raw material of biogas first, obtain unit raw material.The present invention is right
Raw material for preparing biogas is not particularly limited, and using biogas engineering raw material well known to those skilled in the art, such as may be used
Human and animal excreta using solid TS concentration 10%~30%.
The present invention can make raw material average segmentation in course of conveying be unit raw material by the way of conveying is segmented, and
It is continual that unit raw material is carried out into subsequent treatment, it is easy to control concentration with slurry.In the present invention, the speed of the segmentation conveying
Degree is preferably 10m3/ h~20m3/ h, more preferably 15m3/ h~16m3/h。
After obtaining the unit raw material, the unit raw material that the present invention will be obtained carries out water spray treatment, then is stirred, and obtains
Raw material is starched.In the present invention, the water spray treatment can be diluted dispersion to unit raw material, be conducive to follow-up whipping process
Carry out, while realizing control concentration with slurry.In the present invention, the flow of the water spray treatment is preferably 20m3/ h~40m3/ h, more
Preferably 22.89m3/ h~35.61m3/h。
After completing the water spray treatment, the unit raw material after the present invention processes water spray is stirred, and obtains raw material slurry.
In the present invention, the rotating speed of stirring is preferably 1000r/min~1500r/min, more preferably 1300r/min~1400r/min,；
The time of the stirring is preferably 1h~5h, more preferably 1.97h~3.93h.
The invention provides a kind of feedstock pre-processing system for preparing biogas, including：Stirring pool, the stirring pool sets
There are agitating device and former slurry outlet；The doffer above the stirring pool is arranged on, the doffer is vertically
Set, top is blanking import, bottom exports for blanking, the blanking outlet is communicated with stirring pool；The doffer inner side
It is provided with shower nozzle；The raw material segmentation conveying device that discharging opening is communicated with the blanking import, the raw material segmentation conveying device sets
There are discharging opening and charging aperture；The raw material storage device communicated with the charging aperture.Compared with prior art, the use that the present invention is provided
Conveyed using segmentation in the feedstock pre-processing system for preparing biogas, and the unit raw material that segmentation is conveyed is sprayed water before stirring
Treatment, so as to not only make former pulp density accurate, and makes follow-up whipping process be easy to carry out, so that the power for reducing system disappears
Consumption, raising system effectiveness.Test result indicate that, the feedstock pre-processing system provided by the present invention for preparing biogas carries out raw material
After pretreatment, former solids slurry TS concentration can accurately reach the 6% of requirement, and daily total amount with slurry is 100m3~150m3。
In addition, the present invention provide feedstock pre-processing system convenience with slurry, save a large amount of manpowers, operation expense is low.
In order to further illustrate the present invention, it is described in detail below by following examples.
Embodiment 1
Fig. 3 is referred to, Fig. 3 is the work of the feedstock pre-processing system for preparing biogas that the embodiment of the present invention 1 is provided
Process schematic, wherein, 1 is stirring pool, and 2 is agitating device, and 3 is former slurry outlet, and 4 is doffer, and 5 is blanking import, 6
For blanking is exported, 7 is shower nozzle, and 8 is that raw material is segmented conveying device, and 9 is discharging opening, and 10 is charging aperture, and 11 is raw material storage device,
12 is motor, and 13 is rotary shaft, and 14 is blade, and 15 is helical blade, and a is staging process, and b is water jet treatment processes, and c is
Whipping process, d is discharge raw material slurry process, and 1 ' is raw material, and 2 ' is ground level.
Stirring pool (1) a diameter of 2m of feedstock pre-processing system described in the embodiment of the present invention 1,1m high, agitating device (2)
Power be 1.5KW, blade diameter 0.5m, former slurry outlet (3) by DN200 gate valves control open and close；Doffer
(4) inner side is provided with 6 shower nozzles, and maximum injection flow rate is 40m3/h；It is Rotatruder, power that raw material is segmented conveying device (8)
It is 4KW, helical blade length is 4m, external diameter 0.3m, internal diameter 0.1m, pitch 0.3m, fill factor 0.3；Raw material storage device
(11) it is hopper, volume is 10m3。
Use above-mentioned feedstock pre-processing system to solid TS concentration for 20% or so pig manure carries out pretreatment of raw material, have
Body running process is as follows：
(1) biogas engineering raw material (solid TS concentration is 20% or so pig manure) is filled up into material with means of transports such as dump trucks
Bucket, starts Rotatruder, and raw material enters Rotatruder through charging aperture, and it is defeated to carry out segmentation under helical blade rotation left and right
Send, rotating speed is 45r/min, transporting velocity is 15.26m3/ h, the unit raw material obtained after segmentation is constantly delivered to discharging opening.
(2) shower nozzle water spray (shower nozzle time delay and Rotatruder 20s start and stop) is started, to being entered through blanking by discharging opening
Mouth carries out water spray treatment into the unit raw material of doffer, and the flow for the treatment of of spraying water is 35.61m3/ h, the list after water spray treatment
Position raw material enters stirring pool through blanking outlet.
(3) after the liquid level in stirring pool is higher than blade 0.1m, agitating device is started, rotating speed is 1400r/min, right
Raw material in stirring pool is stirred 1.97h, obtains raw material slurry.
(4) DN200 gate valves are opened and constantly discharges raw material slurry, complete pretreatment of raw material.
The above-mentioned course of work can realize that obtaining former solids slurry TS concentration can accurately reach the 6% of requirement, match somebody with somebody daily
Slurry total amount is 100m3。
Embodiment 2
Use the feedstock pre-processing system described in embodiment 1 pre- for 15% or so cow dung carries out raw material to solid TS concentration
Treatment, specific work process is as follows：
(1) biogas engineering raw material (solid TS concentration is 20% or so pig manure) is filled up into material with means of transports such as dump trucks
Bucket, starts Rotatruder, and raw material enters Rotatruder through charging aperture, and it is defeated to carry out segmentation under helical blade rotation left and right
Send, rotating speed is 45r/min, transporting velocity is 15.26m3/ h, the unit raw material obtained after segmentation is constantly delivered to discharging opening.
(2) shower nozzle water spray (shower nozzle time delay and Rotatruder 20s start and stop) is started, to being entered through blanking by discharging opening
Mouth carries out water spray treatment into the unit raw material of doffer, and the flow for the treatment of of spraying water is 22.89m3/ h, the list after water spray treatment
Position raw material enters stirring pool through blanking outlet.
(3) after the liquid level in stirring pool is higher than blade 0.1m, agitating device is started, rotating speed is 1400r/min, right
Raw material in stirring pool is stirred 3.93h, obtains raw material slurry.
(4) DN200 gate valves are opened and constantly discharges raw material slurry, complete pretreatment of raw material.
The above-mentioned course of work can realize that obtaining former solids slurry TS concentration can accurately reach the 6% of requirement, match somebody with somebody daily
Slurry total amount is 150m3。
The described above of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.It is right
Various modifications of these embodiments will be apparent for those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
Will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with principles disclosed herein and features of novelty
Scope most wide.
Claims (10)
1. a kind of feedstock pre-processing system for preparing biogas, including：
Stirring pool, the stirring pool is provided with agitating device and former slurry outlet；
The doffer above the stirring pool is arranged on, the doffer is vertically set, top is blanking import,
Bottom is exported for blanking, and the blanking outlet is communicated with stirring pool；The doffer inner side is provided with shower nozzle；
The raw material segmentation conveying device that discharging opening is communicated with the blanking import, the raw material segmentation conveying device is provided with discharging opening
And charging aperture；
The raw material storage device communicated with the charging aperture.
2. feedstock pre-processing system according to claim 1, it is characterised in that the power of the agitating device be 1KW~
2KW。
3. feedstock pre-processing system according to claim 1, it is characterised in that the number of the shower nozzle is 1~10.
4. feedstock pre-processing system according to claim 1, it is characterised in that the raw material segmentation conveying device is rotation
Conveyer.
5. feedstock pre-processing system according to claim 4, it is characterised in that the power of the Rotatruder is 3KW
~5KW.
6. feedstock pre-processing system according to claim 1, it is characterised in that the former slurry outlet is provided with gate valve.
7. a kind of preprocessing method of raw materials of the feedstock pre-processing system described in any one of claim 1~6, including following step
Suddenly：
A) segmentation conveying will be successively carried out for preparing the raw material of biogas, obtains unit raw material；
B) the unit raw material for obtaining step a) carries out water spray treatment, then is stirred, and obtains raw material slurry.
8. preprocessing method of raw materials according to claim 7, it is characterised in that the speed of conveying is segmented described in step a)
It is 10m3/ h~20m3/h。
9. preprocessing method of raw materials according to claim 7, it is characterised in that the flow for the treatment of of being sprayed water described in step b)
It is 20m3/ h~40m3/h。
10. preprocessing method of raw materials according to claim 7, it is characterised in that the rotating speed stirred described in step b) is
1000r/min~1500r/min, the time is 1h~5h.
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| CN106754286B (en) | 2018-09-25 |
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