CN208562383U - A kind of anaerobic dry fermentation on-line early warning regulating device - Google Patents
A kind of anaerobic dry fermentation on-line early warning regulating device Download PDFInfo
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- CN208562383U CN208562383U CN201820960523.4U CN201820960523U CN208562383U CN 208562383 U CN208562383 U CN 208562383U CN 201820960523 U CN201820960523 U CN 201820960523U CN 208562383 U CN208562383 U CN 208562383U
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- dry fermentation
- leachate collection
- early warning
- anaerobic dry
- collection tank
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Abstract
The utility model discloses a kind of anaerobic dry fermentation on-line early warning regulating devices, belong to biogas project field, to solve the problems, such as that fermentation efficiency inhibits vulnerable to tunning.Including batch-type anaerobic dry fermentation apparatus, leachate collection tank, spray head, the bottom of batch-type anaerobic dry fermentation apparatus is equipped with the diafiltration net communicated with leachate collection tank, leachate collection pot bottom side is equipped with percolate reflux line, and the other end of percolate reflux line is connected with spray head；It further includes early warning system, early warning system includes material reaction area integrated sensor, material reaction area integration probe, leachate collection tank integrated sensor, leachate collection tank integration probe, material reaction area integrated sensor is connect with material reaction area integration probe, and leachate collection tank integrated sensor is connect with leachate collection tank integration probe.Utility model device design is simple, structurally reasonable, while save the cost, improves early warning quality.
Description
Technical field
The utility model belongs to biogas project field, and in particular to a kind of anaerobic dry fermentation on-line early warning regulating device.
Background technique
Anaerobic fermentation production biogas is the important means of agriculture offal treatment in China's green agriculture development process.With
The deep propulsion of China's biogas project transition and upgrade work, scale large-sized biogas engineering and scale bio-natural gas engineering
Mainstream as biogas project construction.Currently, China's biogas project generallys use wet process anaerobic fermentation technology, technique more at
Ripe, operational process volumetric gas production rate is maintained at 0.8-1.0 m3/m3/d.However, with the continuous expansion of the fermentation reactor scale of construction,
Operation energy consumption, biogas slurry consumption, charging discharging etc. become the new problem of biogas project large-scale development, seriously affect the continuous of engineering
Stable operation becomes the pass of biogas project upgrading synergy development for the anaerobic fermentation technology research of suitable scale biogas production
Key.
Dry anaerobic fermentation technology is just actively promoted to industrialization direction, compared with wet process anaerobic fermentation, is had to improve and be given up
Gurry treating capacity reduces energy consumption, improves the advantages that volumetric gas production rate.Moreover, biogas slurry discharge amount is low, biogas residue can be directly used for organic
The production of fertilizer greatly improves the benign cycle ability that agriculture breeding combines.Foreign countries develop dry method anaerobism from the 1980s
Fermentation technique arrives in the 1990s, Europe large size dry anaerobic fermentation biogas project occupation rate existing 50%, famous France
The continuous dry fermentations techniques such as Valorga, Belgium Dranco, Sweden Kompogas, and Germany BEKON, Bioferm, GICON
The batch-type anaerobic dry fermentation technique of company has formed industrialization.Foreign technology lacks the adjusting to leachate collection tank, easily goes out
Existing acid inhibits and ammonia inhibits.
With constantly improve for engineering construction technology, batch-type anaerobic dry fermentation technology is useless in the rich fibrous agricultural of processing
There is unique superiority in terms of gurry, by the disposable input and output material of the mechanical equipments such as forklift, realized in Sealing period efficient
Production gas, easy to operate, high degree of automation, operating cost are low.Although however, China's dry anaerobic fermentation technical research starting compared with
It is early, but develop slowly, in particular with batch-type anaerobic fermentation processing agricultural wastes aspect, it yet there are no landing engineering report
Road, it is rancid that main problem is that batch-type anaerobic dry fermentation process easily occurs, and causes methane phase efficiency to decline rapidly, entire batch is anti-
It should fail, the material more renewed can spend a large amount of manpower and material resources, and still suffer from this problem after restarting fermentation.And
And except through Optimizing Process Parameters, outside spray frequency, material proportion, inoculum concentration, shortage takes elder generation to whole system
Into Forewarning Measures.
Utility model content
It is easy to solve fermentation efficiency the purpose of the utility model is to provide a kind of anaerobic dry fermentation on-line early warning regulating device
The problem of being inhibited by tunning.
Technical solutions of the utility model are as follows: a kind of anaerobic dry fermentation on-line early warning regulating device, including batch-type anaerobism
Dry fermentation device, leachate collection tank, spray head are equipped with leachate collection in the lower section of the batch-type anaerobic dry fermentation apparatus
Tank, the bottom of batch-type anaerobic dry fermentation apparatus are equipped with the diafiltration net communicated with leachate collection tank, leachate collection pot bottom
Side is equipped with percolate reflux line, and the other end of percolate reflux line is connected with spray head；It further includes early warning system, in advance
Alert system includes material reaction area integrated sensor, material reaction area integration probe, leachate collection tank integrated sensor, diafiltration
Liquid collecting tank integration probe, material reaction area integrated sensor are connect with material reaction area integration probe, leachate collection tank collection
It is connect at sensor with leachate collection tank integration probe, material reaction area integration probe and leachate collection tank integration probe are equal
Including material reaction area ORP probe, pH probe and temp probe；Material reaction area integrated sensor is located at batch-type anaerobism drying hair
The side of ferment device, material reaction area integration probe are located at the inner cavity of batch-type anaerobic dry fermentation apparatus, and material reaction area is integrated
For probe vertical at ground to material center, leachate collection tank integrated sensor is located at leachate collection pot bottom side.
It further includes regulating system as a further improvement of the utility model, and regulating system includes that acid solution adjusts tank, alkali
Liquid adjusts tank, and acid solution adjusts tank, the bottom of lye adjusting tank is connected with leachate collection tank respectively, and acid solution adjusts tank, lye tune
The bottom of section tank is respectively equipped with automatic control regulating switch.
At least one spray head is equipped in batch-type anaerobic dry fermentation apparatus as a further improvement of the utility model,
Spray head is arranged from center to batch-type anaerobic dry fermentation apparatus inner wall, and the spacing distance of adjacent spray head is 0.5-1 m.
The spacing distance of adjacent spray head is 0.8 m as a further improvement of the utility model,.
The diameter of spray orifice is 0.5-1 cm as a further improvement of the utility model,.
Every row, which pops one's head in, as a further improvement of the utility model, is spaced 1-3 meters.
Stirring dress is equipped at batch-type anaerobic dry fermentation apparatus lower central as a further improvement of the utility model,
It sets.
It is thick to be wrapped with 5-15 cm for the batch-type anaerobic dry fermentation apparatus as a further improvement of the utility model,
Insulating layer.
The utility model is real to batch-type anaerobic dry fermentation process to batch-type anaerobic dry fermentation Establishing pre-alarming system
When monitor on-line；It while early warning, adjusts the pH of percolate and carries out reflux spray, neutralize organic in material reaction zone
Acid removes mortifier in time, and material reaction area is made to maintain normal methane fermentation horizontal, solves fermentation process and lacks asking for adjusting
Topic.
Compared with prior art, as follows the advantages of the utility model:
(1) prior art prescribed ferment technological parameter lacks the effective monitoring to fermentation process, if fermentation process occurs
Inhibit, methane production can be made to decline, shorten the efficient aerogenesis time, or even occurs rancid.
The utility model is to fermentation process real-time early warning and adjusting, on the basis of existing fermentation parameter, to fermenting
Cheng Caiyong is adjusted in time, fast and accurately, helps to extend the efficient methane phase time, increases the removal efficiency of substrate organic matter.
(2) warning index chosen is significant related to methane phase efficiency, and not by the interference of buffer system, directly characterization is detested
Aerobe fermentation quality；Regulating system is simple and easy using acid-base neutralization, and regulating effect is obvious, does not need to open batch-type anaerobism drying hair
Ferment device (1), whole process are completed under anaerobic.Entire early warning and regulating system design fully take into account batch-type anaerobism drying hair
Ferment feature, it is simple and easy, it is less prone to failure, for large-scale batch-type anaerobic dry fermentation biogas project, construction cost is low,
Early warning regulating effect is significant.Reply fermentation process establishes warning index, and to the warning index real-time monitoring of foundation, discovery is asked ahead of time
Topic changes process strategies, adjusts method using rationally effective to fermentation process, guarantees that gas generation process is stablized, efficiency improves.
The effect of the utility model is as follows:
(1) the substrate solid content of the application is in 25%-40%, and uses stalk-feces of livestock and poultry mixed farming discarded
Object can more reflect the representativeness of agricultural wastes；(2) batch-type anaerobic dry fermentation relies primarily on ORP and carries out early warning, and ORP occurs
It is abnormal, often exception is not seen also from methane concentration, gas concentration lwevel, basicity or even butyric acid density.In addition, ORP measurement is not
With sampling, probe on-line monitoring.
(2) the utility model not only uses ORP as main warning index, the adjusting after also relating to early warning, after reduction
The investment of continuous manpower and material resources adjusts and mainly sees pH, and for pH as auxiliary reference, adding acid-base accommodation pH is neutrality, and regulative mode is
Percolate pH is adjusted, the pH in material reaction zone is adjusted indirectly upon reflowing, is adjusted by way of reflux spray.Make it
Recovery normally and efficiently produces gas.Main function is played when adjusting percolate.Whole system is set to realize comprehensive on-line early warning
And adjusting, it is more conducive to the stable operation of batch-type anaerobic dry fermentation.
(3) utility model device design is simple, structurally reasonable, while save the cost, improves early warning quality, passes through
It adjusts percolate and sprays mode, increase the efficient methane phase time.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of anaerobic dry fermentation on-line early warning regulating device.
Appended drawing reference meaning is as follows: 1- batch-type anaerobic dry fermentation apparatus: 101- material reaction area, 102- spray head,
103- is percolated net, and 104- produces gas outlet, 105- insulating layer, 2- leachate collection tank, 201- leachate collection area, 202- stirring dress
It sets, 203- percolate reflux line, 204- automatic control electric machine, the first regulating switch of 205-, the second regulating switch of 206-, 207- third
Regulating switch；3- control room, 301- material reaction area integrated sensor, 302- material reaction area integration probe, 303- percolate
Collecting tank integrated sensor, 304- leachate collection tank integration probe, 305- acid solution adjust tank, and 306- lye adjusts tank, 307-
Automatic control regulating switch；Processor is controlled in 308-.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawing.
As shown, a kind of anaerobic dry fermentation on-line early warning regulating device, including batch-type anaerobic dry fermentation apparatus 1, infiltration
Filtrate collecting tank 2, spray head 102 are equipped with leachate collection tank 2 in the lower section of batch-type anaerobic dry fermentation apparatus 1, and batch-type is detested
The bottom of oxygen dry fermentation device 1 is equipped with the diafiltration net 103 communicated with leachate collection tank 2, and 2 bottom side of leachate collection tank is set
There is percolate reflux line 203, the other end of percolate reflux line 203 is connected with spray head 102；It further includes early warning system
System, early warning system include material reaction area integrated sensor 301, and material reaction area integration probe 302, leachate collection tank are integrated
Sensor 303, leachate collection tank integration probe 304, material reaction area integrated sensor 301 and material reaction area integration probe
(302) it connects, leachate collection tank integrated sensor 303 is connect with leachate collection tank integration probe 304；Material reaction area collection
It include material reaction area ORP probe, pH probe and temp probe at probe 302 and leachate collection tank integration probe 304；Object
Material reaction zone integrated sensor 301 is located at the side of batch-type anaerobic dry fermentation apparatus 1, material reaction area integration probe 302
In the inner cavity of batch-type anaerobic dry fermentation apparatus 1, material reaction area integration probe 302 perpendicular to ground to material center at, seep
Filtrate collecting tank integrated sensor 303 is located at 2 bottom side of leachate collection tank.
It further includes regulating system, and regulating system includes that acid solution adjusts tank 305, lye adjusts tank 306, and acid solution adjusts tank
305, the bottom that lye adjusts tank 306 is connected with leachate collection tank 2 respectively, and acid solution adjusts tank 305, lye adjusts tank 306
Bottom is respectively equipped with automatic control regulating switch 307.
Batch-type anaerobic dry fermentation apparatus 1 is concrete structure, and feeding gate is located at side, inside sets grid, is used for protection
Material 101 material of reaction zone is not scattered outward.
Spray head 102 is stainless steel structure, from one side of feeding gate to batch-type anaerobic dry fermentation apparatus internal stretch, is sprayed
Uniformly it is covered with diameter 0.5-1cm circular hole on head, for spraying percolate.At least one is equipped in batch-type anaerobic dry fermentation apparatus 1
A spray head 102, from center to the arrangement of batch-type anaerobic dry fermentation apparatus inner wall (in figure laterally), spacing distance is spray head
0.5-1 m, preferably 0.8m.
Percolate is filtered by diafiltration net 103 into percolate collecting tank 2, is produced gas outlet 104 and is located at material reaction area top, generates
Biogas be discharged and collect from this mouth, the insulating layer 105 of entire batch-type anaerobic dry fermentation apparatus package 5-15 cm thickness, preferably
10 cm are thick.
Leachate collection tank 2 is built in underground, and for leachate collection in leachate collection area 201, agitating device is built in sequence batch
At formula anaerobic dry fermentation apparatus lower central, stirrer paddle 3, time opening stirs evenly percolate.
Percolate reflux line 203 is built in leachate collection pot bottom side, pumps percolate extremely with automatic control electric machine pump 204
Spray head, percolate pass through the first regulating switch 205 of spray head of different location, the second regulating switch 206, and third adjusting is opened
207 control flows are closed, it can subregion spray.
Material reaction area integrated sensor 301 is located at the side of batch-type anaerobic dry fermentation apparatus 1, and material reaction area is integrated
Probe 302 is located at the inner cavity of batch-type anaerobic dry fermentation apparatus 1, and material reaction area integration probe 302 is perpendicular to ground to material
At center, leachate collection tank integrated sensor 303 is located at 2 bottom side of leachate collection tank；
Pop one's head in quantity it is identical with spray head quantity, material reaction area ORP, pH, three kinds of temperature pop one's head in every group of probe all and
Spray head quantity is identical, and longitudinal direction extends internally distribution, and every row pops one's head in 1-3 meter of interval, and preferably 2 meters, transverse and longitudinal has, in this way spray
It is relatively uniform to drench material, is material reaction area different zones real-time detection oxidation-reduction potential (ORP), pH and temperature.Percolate
Collecting tank integrated sensor 303 monitors ORP, pH and temperature inside leachate collection tank.Sensor is responsible for receiving transducer data, by
Wireless network is sent to the middle switch of control processor 308 automatic adjustment, and middle control processor 308 is located in control room 3.
It is anti-corrosion material that acid solution, which adjusts tank 305, and inside is equipped with 0.5 mol/L HCl, and it is preserving timber that lye, which adjusts tank 306,
Matter, inside are equipped with 0.5 mol NaCl, and automatic control regulating switch 307 is located at two adjusting tank lower parts, and control acid solution, lye prolong anti-corrosion
Pipeline flows into leachate collection tank.
Embodiment 1
Material is stalk-feces of livestock and poultry mixture, and mixed dry matter (TS) ratio is 6:4, and inoculum concentration is material matter
The 40% of amount.Material is transported to material reaction area by forklift, closes grid and disengaging bin gate, closed batch-type anaerobic dry fermentation dress
1 is set to start to ferment.
Spray frequency is adjusted according to the variation of material reaction area ORP, when ORP is higher than -240 mV, reduction spray frequency is 2
Times/day, if ORP loses decline, it can continue to turn down spray frequency, constant spray flow is the 1/4 of volume of material, and spray continues every time
3min.When ORP is lower than -240 mV, height-regulating spray frequency, when ORP is below -300mV, spray frequency is 8 times/day.Data
Monitoring result shows that pH is basically stable at 7.0, and it is about 0.8 m that average volume, which produces biogas rate,3/m3/d。
In fermentation process, judges that acid solution, lye are adjusted according to the ORP of leachate collection tank and pH value, make leachate collection
Percolate ORP value is lower than -280 mV in tank, and pH is not less than 7.0.Probe monitors ORP, pH of material reaction area different zones, when
When ORP occurs abnormal, different location spray head switch is opened, spray frequency is increased or decreased, is strengthened or dropped in region
Low spray in 1 operational process of batch-type anaerobic dry fermentation apparatus, ferments preceding 5 days, need to open lye and adjust tank adjusting pH into
Property；Fermentation time is more than that need to open acid solution and adjust tank to adjust pH to neutrality after 25 days, can extend and produce gas peak period, and
Realize that the whole early warning to fermentation system is adjusted.
Embodiment 2
Material is stalk-feces of livestock and poultry mixture, and mixed dry matter (TS) ratio is 3:7, and inoculum concentration is 30%, object
Material is transported to material reaction area by forklift or conveyer belt, closes grid and disengaging bin gate, closed batch-type anaerobic dry fermentation apparatus 1
Start to ferment.
Spray frequency is adjusted according to the variation of ORP, when ORP is higher than -220mV, reduction spray frequency is 1 times/day, if ORP
Lose decline, can continue to turn down spray frequency, constant spray flow is the 1/2 of volume of material, and spray continues 1 min every time, works as ORP
Lower than -240 mV, spray frequency is turned up, when ORP is below -280mV, spray frequency is 6 times/day.
In fermentation process, judges that acid solution, lye are adjusted according to ORP and pH value, keep percolate ORP in leachate collection tank low
In -280 mV, pH 6.8.Probe monitors ORP, pH of material reaction area different zones are opened different when ORP occurs abnormal
Position spray head switch, increases or decreases spray frequency, to being strengthened or being reduced spray in region, realizes to fermentation system
Whole early warning is adjusted.
Embodiment 3
Material is stalk-feces of livestock and poultry mixture, and mixed dry matter (TS) ratio is 7:3, and inoculum concentration is 60%, object
Material is transported to material reaction area by forklift or conveyer belt, closes grid and disengaging bin gate, closed batch-type anaerobic dry fermentation apparatus 1
Start to ferment.
Spray frequency is adjusted according to the variation of ORP, when ORP is higher than -260mV, reduction spray frequency is 4 times/day, if ORP
Lose decline, can continue to turn down spray frequency, constant spray flow is the 1/5 of volume of material, and spray continues 5 min every time, works as ORP
Lower than -240 mV, spray frequency is turned up, when ORP is in -320 mV or less, spray frequency is 12 times/day.
In fermentation process, judges that acid solution, lye are adjusted according to ORP and pH value, keep percolate ORP in leachate collection tank low
In -280 mV, pH 7.2.Probe monitors ORP, pH of material reaction area different zones are opened different when ORP occurs abnormal
Position spray head switch, increases or decreases spray frequency, to being strengthened or being reduced spray in region, realizes to fermentation system
Whole early warning is adjusted.
Claims (8)
1. a kind of anaerobic dry fermentation on-line early warning regulating device, including batch-type anaerobic dry fermentation apparatus, leachate collection tank, spray
Head is drenched, is equipped with leachate collection tank in the lower section of the batch-type anaerobic dry fermentation apparatus, batch-type anaerobic dry fermentation apparatus
Bottom is equipped with the diafiltration net communicated with leachate collection tank, and leachate collection pot bottom side is equipped with percolate reflux line, seeps
The other end of filtrate reflux line is connected with spray head；It is characterized by: it further includes early warning system, early warning system includes material
Reaction zone integrated sensor (301), material reaction area integration probe (302), seep leachate collection tank integrated sensor (303)
Filtrate collecting tank integration probe (304), material reaction area integrated sensor (301) and material reaction area integration probe (302) are even
It connects；Leachate collection tank integrated sensor (303) is connect with leachate collection tank integration probe (304), and material reaction area is integrated
It pops one's head in (302) and leachate collection tank integration probe (304) includes material reaction area ORP probe, pH probe and temp probe；
Material reaction area integrated sensor (301) is located at the side of batch-type anaerobic dry fermentation apparatus (1), material reaction area integration probe
(302) it is located at the inner cavity of batch-type anaerobic dry fermentation apparatus (1), material reaction area integration probe (302) is perpendicular to ground to object
At material center, leachate collection tank integrated sensor (303) is located at leachate collection tank (2) bottom side.
2. a kind of anaerobic dry fermentation on-line early warning regulating device according to claim 1, it is characterised in that: it further includes adjusting
Section system, regulating system include that acid solution adjusts tank (305), lye adjusts tank (306), and acid solution adjusts tank (305), lye adjusts tank
(306) bottom is connected with leachate collection tank (2) respectively, and acid solution adjusts the bottom point of tank (305), lye adjusting tank (306)
It She You not automatic control regulating switch (307).
3. a kind of anaerobic dry fermentation on-line early warning regulating device according to claim 2, it is characterised in that: batch-type anaerobism
At least one spray head (102) is equipped in dry fermentation device (1), spray head (102) is filled from center to batch-type anaerobic dry fermentation
Inner wall arrangement is set, the spacing distance of adjacent spray head (102) is 0.5-1 m.
4. a kind of anaerobic dry fermentation on-line early warning regulating device according to claim 3, it is characterised in that: adjacent spray head
(102) spacing distance is 0.8 m.
5. a kind of anaerobic dry fermentation on-line early warning regulating device according to claim 3 or 4, it is characterised in that: spray orifice
Diameter is 0.5-1 cm.
6. a kind of anaerobic dry fermentation on-line early warning regulating device according to claim 5, it is characterised in that: between every row's probe
Every 1-3 meters.
7. a kind of anaerobic dry fermentation on-line early warning regulating device according to claim 6, it is characterised in that: batch-type anaerobism
Agitating device is equipped at dry fermentation device lower central.
8. a kind of anaerobic dry fermentation on-line early warning regulating device according to claim 7, it is characterised in that: the batch-type
Anaerobic dry fermentation apparatus is wrapped with the insulating layer (105) of 5-15 cm thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820960523.4U CN208562383U (en) | 2018-06-21 | 2018-06-21 | A kind of anaerobic dry fermentation on-line early warning regulating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820960523.4U CN208562383U (en) | 2018-06-21 | 2018-06-21 | A kind of anaerobic dry fermentation on-line early warning regulating device |
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| CN208562383U true CN208562383U (en) | 2019-03-01 |
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ID=65487607
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504557A (en) * | 2018-06-21 | 2018-09-07 | 农业部规划设计研究院 | A kind of anaerobic dry fermentation on-line early warning regulating device and method |
| CN112375665A (en) * | 2020-11-16 | 2021-02-19 | 农业农村部规划设计研究院 | Aeration spraying integrated system applied to sequencing batch dry fermentation device |
| CN112852612A (en) * | 2021-02-06 | 2021-05-28 | 农业农村部规划设计研究院 | Micro-aerobic pre-heating sequential batch dry fermentation equipment |
-
2018
- 2018-06-21 CN CN201820960523.4U patent/CN208562383U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504557A (en) * | 2018-06-21 | 2018-09-07 | 农业部规划设计研究院 | A kind of anaerobic dry fermentation on-line early warning regulating device and method |
| CN112375665A (en) * | 2020-11-16 | 2021-02-19 | 农业农村部规划设计研究院 | Aeration spraying integrated system applied to sequencing batch dry fermentation device |
| CN112852612A (en) * | 2021-02-06 | 2021-05-28 | 农业农村部规划设计研究院 | Micro-aerobic pre-heating sequential batch dry fermentation equipment |
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