CN109554284A - A kind of high solid content rubbish from cooking anaerobic processing device and its application method producing biogas - Google Patents

A kind of high solid content rubbish from cooking anaerobic processing device and its application method producing biogas Download PDF

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Publication number
CN109554284A
CN109554284A CN201910001936.9A CN201910001936A CN109554284A CN 109554284 A CN109554284 A CN 109554284A CN 201910001936 A CN201910001936 A CN 201910001936A CN 109554284 A CN109554284 A CN 109554284A
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anaerobic reactor
anaerobic
processing device
tipping bucket
solid content
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岳婵媛
唐红玲
阮文权
王庭
高瑞丽
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WUXI MASHENG ENVIRONMENT ENERGY TECHNOLOGY Co Ltd
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WUXI MASHENG ENVIRONMENT ENERGY TECHNOLOGY Co Ltd
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    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02Stirrer or mobile mixing elements
    • C12M27/06Stirrer or mobile mixing elements with horizontal or inclined stirrer shaft or axis
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    • C12M33/00Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
    • C12M33/04Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus by injection or suction, e.g. using pipettes, syringes, needles
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    • C12M33/00Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
    • C12M33/16Screw conveyor
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    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/24Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
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    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P5/00Preparation of hydrocarbons or halogenated hydrocarbons
    • C12P5/02Preparation of hydrocarbons or halogenated hydrocarbons acyclic
    • C12P5/023Methane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

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Abstract

The present invention relates to a kind of high solid content rubbish from cooking anaerobic processing devices and its application method for producing biogas, including tipping bucket feeder, feed hopper, Shaftless screw conveyor, anaerobic reactor, discharging device, water sealed tank, screw extrusion dewaterer, screw pump, centrifugal pump and PP water tank;The tipping bucket feeder, which is realized to automatically control, promotes feeding, accurately controls inlet amount and feed back is reduced, the feed hopper is the charging Fang Dou of three face baffles, can prevent materials from spattering from going out, by the Shaftless screw conveyor, material is conveyed into anaerobic reactor;It is provided with three axis rabbling mechanisms in the anaerobic reactor, uniformly mixes slowly material, it is abundant to can aid in material fermentation, promotes biogas output.The novel defeated system of rubbish from cooking slurry is arranged in the present invention, so that charging is convenient, clean, using the anaerobic reactor of carbon steel structure form, reduces occupied area, reduces project cost, high solid content rubbish from cooking can be effectively treated.

Description

A kind of high solid content rubbish from cooking anaerobic processing device and its application method producing biogas
Technical field
The present invention relates at environmental project apparatus field more particularly to a kind of high solid content rubbish from cooking anaerobism for producing biogas Manage device and its application method.
Background technique
With Chinese society expanding economy, catering trade is grown rapidly, and kitchen garbage yield is growing day by day.Ordinary meaning On, kitchen garbage is the general name of food garbage and rubbish from cooking.Wherein, rubbish from cooking has high COD, high ammonia nitrogen, high SS and height The features such as salinity, processing difficulty are larger.
Publication No. CN204356195U utility model patent proposes a kind of kitchen garbage device for high concentration waste water treatment, packet Include the following course of work: kitchen garbage, waste-water enters denitrification tank body inner cylinder bottom after conditioning tank is adjusted uniformly, agitated, Mixing, makes nitrate under the degradation of denitrifying bacterium, becomes nitrogen spilling, then waste water enters nitrating pot outer cylinder from bottom, not The ammonia nitrogen of degradation in Biochemical pot outer cylinder nitrifier, nitrococcus under the action of complete nitration reaction, while organic matter quilt Oxidation (aeration in tank), nitrification, denitrification are the main biochemical treatment processes of kitchen garbage, waste-water, including in kitchen garbage, waste-water Organic pollutant degradation, ammonium oxidation and denitrification denitrogenation etc..By denitrification, nitration reaction degradation of organic substances and denitrogenation Kitchen garbage, waste-water afterwards enters sedimentation basin by pipeline, and the supernatant after precipitating is pumped into ultrafiltration apparatus, is made using the retention of film It is clipped with by SS and pollutant, the mixed liquor of generation enters back into denitrification tank body inner cylinder by circulation line, and it is de- to carry out denitrification Nitrogen, while the biochemical extra sludge generated and the sludge of precipitating are discharged to sludge-tank and in addition handle, after the standard water discharge of ultrafiltration apparatus It is discharged to Clear liquid tank.Water conservancy residence time (HRT), sludge retention time (SRT), temperature, pH value, dissolution are controlled in the process Oxygen etc. can ensure that effluent quality reaches biochemical effects.
A kind of nitrification that above-mentioned patent is proposed just for the structure type in kitchen waste water processing traditional handicraft mesophytization pond Denitrification tank carbon steel inside and outside sleeve structure, ultrafiltration apparatus use external pipe type ultra-filtration membrane device.Package unit is in kitchen waste water It is higher that there are still energy consumptions during processing actual implementation, runs problem complicated for operation.
Firstly, since the high ammonia nitrogen feature of waste water, requires supplementation with a large amount of oxygen;
Secondly, external pipe type ultrafiltration membrane system need to provide high-pressure circulation pump using the infiltration water outlet of membrane tube inside and outside differential pressure;
Again, tubular ultra-filtration membrane is more demanding to intaking, and cannot have any impurity to enter membranous system, and pretreatment dress need to be arranged It sets, increases system operatio complexity.
The application proposes a kind of high solid content rubbish from cooking anaerobic processing device for producing biogas, to understand and solve Gao Hangu Some parameters of the rate rubbish from cooking in high temperature anaerobic treatment process and the problem of can actually encounter, pass through the debugging of correlated process And improvement, finally make this kind " high solid content rubbish from cooking anaerobic processing device " energy maturation apply to engineering project, and easily Implementation, small risk, low energy consumption, high efficiency.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of high solid content rubbish from cooking Anaerobic Treatment dress for producing biogas It sets and its application method.
In order to solve the above problem, solution of the invention is a kind of high solid content rubbish from cooking Anaerobic Treatment for producing biogas Device, including tipping bucket feeder, feed hopper, Shaftless screw conveyor, anaerobic reactor, discharging device, water sealed tank, screw extrusion Dewaterer, screw pump, centrifugal pump and PP water tank;
The tipping bucket feeder includes changed course chain wheel set, feeding cart, feeding tipping bucket frame, lifting chain, guide rail framework, opens Tight chain wheel set, drive sprocket group and decelerating motor;The feeding tipping bucket frame and the setting of guide rail framework side-by-side parallel, the promotion chain Item is arranged on guide rail framework, and the feeding cart links together with the lifting chain, and the changed course chain wheel set is mounted on On feeding tipping bucket frame, the tightener sprocket group and drive sprocket group are mounted on the guide rail framework, the decelerating motor driving The drive sprocket group work, the drive sprocket group drive the lifting chain work;
The feed hopper be three face baffles charging Fang Dou, can prevent materials from spattering from going out, three face baffle into The discharge outlet of material Fang Dou directly docks the feed inlet of the Shaftless screw conveyor, and the Shaftless screw conveyor tilts 30 °, By the Shaftless screw conveyor, material is conveyed into anaerobic reactor;
It is provided with three axis rabbling mechanisms in the anaerobic reactor, uniformly mixes slowly material, can aid in material hair Ferment is abundant, promotes biogas output.
Tipping bucket feeder, feed hopper, Shaftless screw conveyor, anaerobic reactor mutual cooperation have the advantage that (1) is real It now automatically controls and promotes feeding, accurately control inlet amount;(2) realize that manual safety clears up purpose;(3) fuselage support with favored policy closes Reason setting material flip angle, to achieve the purpose that reduce feed back;(4) the perfect rank of the charging side of feeding skip and three face baffles bucket It connects.
As an improvement, the helix length of the Shaftless screw conveyor at least 1m or more, the Shaftless screw conveyor Flange is docked with the flange of the feed inlet of the anaerobic reactor, and is protruded into anaerobic reactor feed inlet, keeps material smooth Into in tank.
As a further improvement, it is high to set the anaerobic reactor plate top surface by the high 3m of anaerobic reactor tank body Degree be+0.000m, material liquid surface height+2.500m, anaerobic reactor feed inlet center absolute altitude+2.200m, anaerobic reactor into Material mouth centre-height be lower than material liquid surface height, fluid-tight can be played the role of, prevent anaerobic fermentation generate biogas by into Material mouth, which dissipates, to be spilt in air.
As a further improvement, angle (angled conveyor) is 76 ° between the tipping bucket feeder and ground, is various aspects Optimum charging angle.
As a further improvement, during batch turning, the feeding cart rotates clockwise 135 °, can effectively prevent Material reflux.
As a further improvement, travel switch up and down is also provided on the tipping bucket feeder.
As a further improvement, the bucket capacity of the feeding cart is 350L, rate of climb 200mm/s, hoisting depth About 4.2m, the power of motor of the tipping bucket feeder are 2.2kw.
As a further improvement, it is provided with 3 groups of heat exchanger tubes in the anaerobic reactor, helps to add to material in tank Heat.
As a further improvement, the thermometer boss that a length 800mm has also been set in the anaerobic reactor, can survey Temperature of charge in measuring tank adjusts temperature in tank by electrical control.
A kind of application method for the high solid content rubbish from cooking anaerobic processing device producing biogas, comprising:
Step 1: the high solid content rubbish from cooking is delivered to the charging Fang Douzhong of three face baffles by tipping bucket feeder;
Step 2: the high solid content rubbish from cooking of the charging Fang Douzhong of three face baffles is delivered to by Shaftless screw conveyor In the feed inlet of anaerobic reactor;
Step 3: anaerobic reactor adds water into the material solid content of anaerobic reactor up to 30% or so, adjustment material contains Gu rate is 15% or so, control fermentation temperature carries out medium temperature dry-type anaerobic fermentation in 35-38 degree;
Step 4: there are three types of discharge methods for anaerobic reactor: mode one, water output cylinder gravity flow discharging;Mode two, in screw pump Under effect, the discharging of water output cylinder base pressure;Mode three, the cleaning discharging of anaerobic reactor bottom;Different phase, different times, root Different discharge methods is selected according to actual conditions.
From the above, it can be seen that the invention has the following advantages that
1, the novel defeated system of rubbish from cooking slurry is set, so that charging is convenient, clean.
2, using the anaerobic reactor of carbon steel structure form, occupied area is reduced, reduces project cost.
3, high solid content rubbish from cooking can be effectively treated.
4, regulating tank carries out reflux moisturizing.
5, biogas output improves.
Detailed description of the invention
Fig. 1 is general assembly structural schematic diagram of the invention;
Fig. 2 is the structural schematic diagram of tipping bucket feeder of the present invention;
Fig. 3 is signal when tipping bucket feeder, charging Fang Dou, Shaftless screw conveyor and anaerobic reactor of the present invention use Figure;
Appended drawing reference: 1, alter course chain wheel set, 2, feeding cart, 3, feeding tipping bucket frame, 4, lifting chain, 5, guide rail framework, 6, tightener sprocket group, 7, drive sprocket group, 8, decelerating motor;
11, tipping bucket feeder, 12, feed hopper, 13, Shaftless screw conveyor, 14, anaerobic reactor, 15, discharging device, 16, water sealed tank, 17, screw extrusion dewaterer, 18, screw pump, 19, centrifugal pump, 20, PP water tank, 21, three axis rabbling mechanisms, 22, Shaftless screw conveyor A, 23, heat exchanger tube, 24, Shaftless screw conveyor B.
Specific embodiment
In conjunction with Fig. 1 to Fig. 3, first specific embodiment that the present invention will be described in detail, but not to claim of the invention Do any restriction.
As shown in Fig. 1 to Fig. 3, a kind of high solid content rubbish from cooking anaerobic processing device producing biogas, it is characterised in that: packet Include tipping bucket feeder 11, feed hopper 12, Shaftless screw conveyor 13, anaerobic reactor 14, discharging device 15, water sealed tank 16, spiral shell Revolve extruding-desiccation machine 17, screw pump 18, centrifugal pump 19 and PP water tank 20;
The tipping bucket feeder includes changed course chain wheel set 1, feeding cart 2, feeding tipping bucket frame 3, lifting chain 4, guide rail machine Frame 5, tightener sprocket group 6, drive sprocket group 7 and decelerating motor 8;The feeding tipping bucket frame 3 and 5 side-by-side parallel of guide rail framework are set It sets, the lifting chain 4 is arranged on guide rail framework 5, and the feeding cart 2 links together with the lifting chain 4, described Changed course chain wheel set 1 is mounted on feeding tipping bucket frame 3, and the tightener sprocket group 6 and drive sprocket group 7 are mounted on the guide rail framework On 5, the decelerating motor 8 drives the drive sprocket group 7 to work, and the drive sprocket group 7 drives 4 work of lifting chain Make;
The feed hopper 12 is the charging Fang Dou of three face baffles, can prevent materials from spattering from going out, three face baffle The discharge outlet of charging Fang Dou directly docks the feed inlet of the Shaftless screw conveyor 13, and the Shaftless screw conveyor 13 inclines Oblique 30 °, material is conveyed into the anaerobic reactor 14 by the Shaftless screw conveyor 13;
It is provided with three axis rabbling mechanisms 21 in the anaerobic reactor 14, uniformly mixes slowly material, can aid in object Material fermentation sufficiently, promotes biogas output.
Tipping bucket feeder, feed hopper, Shaftless screw conveyor, anaerobic reactor mutual cooperation have the advantage that (1) is real It now automatically controls and promotes feeding, accurately control inlet amount;(2) realize that manual safety clears up purpose;(3) fuselage support with favored policy closes Reason setting material flip angle, to achieve the purpose that reduce feed back;(4) the perfect rank of the charging side of feeding skip and three face baffles bucket It connects.
More specifically, the helix length at least 1m or more of the Shaftless screw conveyor 13, the Shaftless screw conveyor 13 flange is docked with the flange of the feed inlet of the anaerobic reactor 14, and is protruded into 14 feed inlet of anaerobic reactor, and object is made Material can smoothly enter into tank.
More specifically, the high 3m of 14 tank body of anaerobic reactor, set the 14 plate top surface height of anaerobic reactor as+ 0.000m, material liquid surface height+2.500m, 14 feed inlet center absolute altitude+2.200m of anaerobic reactor, anaerobic reactor 14 are fed Mouth centre-height is lower than material liquid surface height, can play the role of fluid-tight, and the biogas for preventing anaerobic fermentation from generating passes through charging Mouth, which dissipates, to be spilt in air.
More specifically, angle is 76 ° between the tipping bucket feeder 11 and ground.
More specifically, the feeding cart 2 rotates clockwise 135 ° during batch turning, material can be effectively prevent to return Stream.
More specifically, being also provided with travel switch up and down on the tipping bucket feeder 11.
More specifically, the bucket capacity of the feeding cart 2 is 350L, rate of climb 200mm/s, hoisting depth is about 4.2m, the power of motor of the tipping bucket feeder 11 are 2.2kw.
More specifically, being provided with 3 groups of heat exchanger tubes 23 in the anaerobic reactor 14, help to heat to material in tank.
More specifically, also having set the thermometer boss of a length 800mm in the anaerobic reactor 14, can measure in tank Temperature of charge adjusts temperature in tank by electrical control.
In use, a kind of application method for the high solid content rubbish from cooking anaerobic processing device for producing biogas, comprising:
Step 1: the high solid content rubbish from cooking is delivered to the feed hopper 12 of three face baffles by tipping bucket feeder 11 In;
Step 2: the high solid content rubbish from cooking in the feed hopper 12 of three face baffles is conveyed by Shaftless screw conveyor 13 Into the feed inlet of anaerobic reactor 14;
Step 3: anaerobic reactor 14 adds water into the material solid content of anaerobic reactor 14 up to 30% or so, object is adjusted Expect that solid content is 15% or so, control fermentation temperature carries out medium temperature dry-type anaerobic fermentation in 35-38 degree;
Step 4: there are three types of discharge methods for anaerobic reactor 14: mode one, water output cylinder gravity flow discharging;Mode two, in screw rod Under 18 effect of pump, the discharging of water output cylinder base pressure;Mode three, the cleaning discharging of 14 bottom of anaerobic reactor;Different phase, when different Phase selects different discharge methods according to the actual situation.
More specifically, raw material, containing broken polybag fragment and broken bone, is contained by pretreated rubbish from cooking slurry Gu rate is up to 30% or so, common feeding manner not can guarantee normal charging, so present invention employs tipping bucket feeders to mention Rise the mode of charging.
More specifically, installing one three additional between tipping bucket feeder and the Shaftless screw conveyor of anaerobic reactor feed inlet The Fang Dou of face baffle, Fang Dou and tipping bucket feeder, Shaftless screw conveyor and support platform do reasonable fixation.
More specifically, anaerobic reactor is using a kind of new stirring technique, the stirring of three axis of tank skin plus a side stirring Mode, uniformly mix slowly material, it is abundant to facilitate material fermentation, and biogas output is promoted.Routine mostly uses the 6 of equal length A blade (two blade of an axis) synchronizes control using servo motor, and post debugging is found, due to material load unevenness, for a long time Cumulative function under, can be collided between blade, so the later period has adjusted the length of three axis stirrer paddles, and increase a side stirring Machine, discovery mixing effect are good.
In conclusion the invention has the following advantages that
1, the novel defeated system of rubbish from cooking slurry is set, so that charging is convenient, clean.
2, using the anaerobic reactor of carbon steel structure form, occupied area is reduced, reduces project cost.
3, high solid content rubbish from cooking can be effectively treated.
4, regulating tank carries out reflux moisturizing.
5, biogas output improves.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this Technical solution described in inventive embodiments, those skilled in the art should understand that, it is limited not departing from claim In the case where fixed spirit and scope, it can modify to the present invention or equivalent replacement, to reach identical technical effect, but All within protection scope of the present invention.

Claims (10)

1. it is a kind of produce biogas high solid content rubbish from cooking anaerobic processing device, it is characterised in that: including tipping bucket feeder (11), Feed hopper (12), Shaftless screw conveyor (13), anaerobic reactor (14), discharging device (15), water sealed tank (16), screw extrusion Dewaterer (17), screw pump (18), centrifugal pump (19) and PP water tank (20);
The tipping bucket feeder includes changed course chain wheel set (1), feeding cart (2), feeding tipping bucket frame (3), lifting chain (4), leads Trailer frame (5), tightener sprocket group (6), drive sprocket group (7) and decelerating motor (8);The feeding tipping bucket frame (3) and guide rail machine The setting of frame (5) side-by-side parallel, the lifting chain (4) are arranged on guide rail framework (5), and the feeding cart (2) mentions with described It rises chain (4) to link together, the changed course chain wheel set (1) is mounted on feeding tipping bucket frame (3), the tightener sprocket group (6) It is mounted on the guide rail framework (5) with drive sprocket group (7), the decelerating motor (8) drives drive sprocket group (7) work Make, the drive sprocket group (7) drives lifting chain (4) work;
The feed hopper (12) be three face baffles charging Fang Dou, can prevent materials from spattering from going out, three face baffle into The discharge outlet of material Fang Dou directly docks the feed inlet of the Shaftless screw conveyor (13), the Shaftless screw conveyor (13) 30 ° of inclination, is conveyed into material in the anaerobic reactor (14) by the Shaftless screw conveyor (13);
It is provided with three axis rabbling mechanisms (21) in the anaerobic reactor (14), uniformly mixes slowly material, can aid in object Material fermentation sufficiently, promotes biogas output.
2. anaerobic processing device according to claim 1, it is characterised in that: the spiral of the Shaftless screw conveyor (13) Length at least 1m or more, the flange of the feed inlet of the flange and anaerobic reactor (14) of the Shaftless screw conveyor (13) Docking, and protrude into anaerobic reactor (14) feed inlet, so that material is can smoothly enter into tank.
3. anaerobic processing device according to claim 2, it is characterised in that: anaerobic reactor (14) the high 3m of tank body, The anaerobic reactor (14) plate top surface height is set as+0.000m, material liquid surface height+2.500m, anaerobic reactor (14) feed inlet center absolute altitude+2.200m, anaerobic reactor (14) feed inlet centre-height are lower than material liquid surface height, Ke Yiqi To the effect of fluid-tight, the biogas for preventing anaerobic fermentation from generating is dissipated by feed inlet to be spilt in air.
4. anaerobic processing device according to claim 3, it is characterised in that: between the tipping bucket feeder (11) and ground Angle is 76 °.
5. anaerobic processing device according to claim 4, it is characterised in that: during batch turning, the feeding cart (2) 135 ° are rotated clockwise, material can be effectively prevent to flow back.
6. anaerobic processing device according to claim 5, it is characterised in that: be also provided on the tipping bucket feeder (11) Upper and lower travel switch.
7. anaerobic processing device according to claim 6, it is characterised in that: the bucket capacity of the feeding cart (2) is 350L, The rate of climb is 200mm/s, and hoisting depth is about 4.2m, and the power of motor of the tipping bucket feeder (11) is 2.2kw.
8. anaerobic processing device according to claim 7, it is characterised in that: be provided with 3 in the anaerobic reactor (14) Group heat exchanger tube (23), helps to heat to material in tank.
9. anaerobic processing device according to claim 8, it is characterised in that: also set one in the anaerobic reactor (14) The thermometer boss of a length 800mm can measure temperature of charge in tank, by electrical control, adjust temperature in tank.
10. a kind of application method for the high solid content rubbish from cooking anaerobic processing device for producing biogas, it is characterised in that: use right It is required that anaerobic processing device described in 9, comprising:
Step 1: the high solid content rubbish from cooking is delivered in the feed hopper of three face baffles by tipping bucket feeder (11) (12);
Step 2: the high solid content rubbish from cooking in the feed hopper (12) of three face baffles is conveyed by Shaftless screw conveyor (13) Into the feed inlet of anaerobic reactor (14);
Step 3: anaerobic reactor (14) adds water into the material solid content of anaerobic reactor (14) up to 30% or so, object is adjusted Expect that solid content is 15% or so, control fermentation temperature carries out medium temperature dry-type anaerobic fermentation in 35-38 degree;
Step 4: there are three types of discharge methods for anaerobic reactor (14): mode one, water output cylinder gravity flow discharging;Mode two, in screw pump (18) under acting on, the discharging of water output cylinder base pressure;Mode three, the cleaning discharging of anaerobic reactor (14) bottom;Different phase is different Period selects different discharge methods according to the actual situation.
CN201910001936.9A 2019-01-02 2019-01-02 A kind of high solid content rubbish from cooking anaerobic processing device and its application method producing biogas Pending CN109554284A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111607493A (en) * 2020-06-01 2020-09-01 徐州康卓化工设备有限公司 Biogas treatment device and method for anaerobic digestion production of chemical fruit and vegetable garbage
CN111978105A (en) * 2020-07-15 2020-11-24 赵艳波 Kitchen waste treatment equipment

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