CN101631627A - Method for extracting biogas and corresponding device - Google Patents
Method for extracting biogas and corresponding device Download PDFInfo
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- CN101631627A CN101631627A CN200780051243A CN200780051243A CN101631627A CN 101631627 A CN101631627 A CN 101631627A CN 200780051243 A CN200780051243 A CN 200780051243A CN 200780051243 A CN200780051243 A CN 200780051243A CN 101631627 A CN101631627 A CN 101631627A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000000605 extraction Methods 0.000 claims abstract description 36
- 238000005259 measurement Methods 0.000 claims description 12
- 230000006870 function Effects 0.000 claims description 10
- 230000004069 differentiation Effects 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 38
- 230000008859 change Effects 0.000 description 13
- 239000000284 extract Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010011906 Death Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/48—Automatic or computerized control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
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Abstract
The invention essentially relates to a method for controlling the extraction of a biogas from a housing (50) equipped with at least one extraction assembly (31A, 31B) connected to a manifold (70A, 70B) via a control valve (10A, 10B), said method comprising the following steps: providing a respective predetermined manifold pressure (Pr) for each manifold (70A, 70B), and opening the control valve (10A, 10B) in a given position. The method is essentially characterised in that it further comprises the following steps: measuring the value of a meteorological parameter outside the housing; calculating a global set point (dPci) of the control valve (0A, 10B) position based on the measured meteorological parameter value, and opening the control valve (10A, 10B) in a given position in response to the global set point (dPci).
Description
Technical field
The present invention relates to the field that biogas is extracted.
More specifically, according to first aspect, the present invention relates to be used for biogas is extracted in control from the housing (50) that is equipped with at least one extraction assembly (31A, 31B) method, each extraction assembly is connected to respective line (70A, 70B) and comprises at least one single extraction element (311A, 312A, 313A, 31B) by corresponding control valve (10A, 10B), and this method may further comprise the steps:
-locate to provide corresponding predetermined loine pressure (Pr) at each pipeline (70A, 70B), and
-open described control valve (10A, 10B) at given position.
Background technology
Biogas depends on the inner parameter (rubbish type, bacterium, air/oxygen tolerance, rubbish the length of time) and the external parameter of housing.The distribution of Production Regional is different in the housing.
The known prior art document of those skilled in the art U.S. Pat 6169962.
Extract by well control system biogas.The system that proposes is included in sensor-based measurement mechanism of each well head, is used to measure flow, vacuum, temperature and the O of the gas of extraction
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2Content.Send measurement data to remote computer, remote computer then reference model is controlled the opening/closing of the pneumatic control valve of each well, and pneumatic control valve makes it possible to adjust the flow of the gas that extracts by well.
Yet such system does not allow to consider that network interrupts, and does not consider the extraction interruption that atmospheric perturbation causes yet.
Those skilled in the art also know prior art document European patent EP 1291093.The biogas extracting method that this patent proposes is based on the measurement of the relative pressure between the gas pressure in atmospheric pressure and the rubbish.
Gas extraction reduces set point based on the set point that depends on weather forecast in advance thereby predict atmospheric pressure when weather forecast when reducing.
Yet because this scheme is relevant with weather forecast, therefore this scheme can not be carried out optimum extraction, itself has high uncertainty more or less on value, time and space.
Summary of the invention
The objective of the invention is by proposing to be used for optimally drawing biogas, that is, the flow of absorption equals the scheme of the flow of rubbish generation, eliminates these defectives.
For this reason, the equipment that also further meets above-mentioned preorder according to the present invention is characterised in that in fact it is further comprising the steps of:
The meteorologic parameter value of-measurement hull outside,
-calculate the overall set point (dPci) of differential pressure based on measured meteorologic parameter value,
-measure relative pressure (dPi) at an extraction assembly place at least,
-measured relative pressure and described set-point value (dPci) are compared, and
-result changes the position of described control valve (10A, 10B) based on the comparison.
In one embodiment, this method is further comprising the steps of:
-by being compared, measured meteorologic parameter value and reference model provide the first local set point (dPci1),
-calculating is as the described overall set point (dPci) of the function of the described first local set point (dPci1).
Because this feature can be predicted the effect relevant with weather condition of drawing biological tolerance.
Preferably, externally measured meteorologic parameter is included in the set that comprises atmospheric pressure, external temperature and rainfall rate.
In one embodiment, this method is further comprising the steps of:
-at least at a measuring assembly (O of extraction assembly place
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2Content, temperature, pressure) in the value of the physical chemistry internal regulation parameter that comprised,
-measured value and reference value are compared, and
-result provides the second local set point (dPci2) based on the comparison,
-calculating is as the described overall set point (dPci) of the function of the described second local set point (dPci2).
Preferably, set up described reference model, wherein measure the differentiation of the pressure in the rubbish heap according to the value of measured outside and/or inner parameter by the preparation learning procedure.
Because the present invention can predict the variation relevant with condition of work that biogas is extracted network.
The relative pressure that obtains in extraction system depends on the relative pressure value that the biogas intake system applies in pipeline.Under any circumstance, pressure (dPi, Pr, Pi) all is with respect to atmospheric differential pressure value.
For this reason, use the notion of relative pressure and differential pressure without distinction.
According on the other hand, the invention still further relates to a kind of equipment that is used to control the biogas extraction, this equipment can be realized the method according to this invention.
This equipment comprises:
-housing (50), it is equipped with at least one extraction assembly (31A, 31B), each extraction assembly is connected to respective line (70A, 70B) by control corresponding valve (10A, 10B), and comprises at least one single extraction element (311A, 312A, 313A, 31B)
-be used for providing the device of loine pressure (Pr) to respective line (70A, 70B), and
-be used for opening the device of described control valve (10A, 10B) at given position.
This equipment is characterised in that in fact it also comprises:
-be used to measure the device of the meteorologic parameter value of described hull outside,
-be used for calculating the device of the overall set point (dPci) of differential pressure based on measured meteorologic parameter value,
-be used for measuring the device of differential pressure (dPi) at least one extraction assembly place,
-be used for device that measured relative pressure and described set-point value (dPci) are compared, and
-be used for changing the device of the position of described control valve (10A, 10B) according to comparative result.
In one embodiment, this equipment also comprises:
-be used for providing the first local set point (dPci1) by measured meteorologic parameter value and reference model are compared, and calculate device as the described overall set point (dPci) of the function of the described first local set point (dPci1).
Preferably, also comprise learning device according to equipment of the present invention, it is configured to measure based on externally measured meteorologic parameter value the differentiation of internal pressure (Pi), and described reference model is set up by described learning device.
In one embodiment, this equipment also comprises:
-be used at least one measuring assembly (O of extraction assembly place
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2The device of the value of the internal physical chemical parameters that is comprised content),
-be used for device that measured value and reference value are compared, and
-being used for providing the device of the second local set point (dPci2) according to comparative result, described overall set point (dPci) is the function of the described second local set point (dPci2).
Because the present invention can consider outside (meteorology) disturbance.Yet these external disturbances play an important role in diffuse type discharging (diffused emission), compared with prior art can extract the biogas of more percentages.
Equally, because the present invention can compensate internal disturbance.
Therefore, the invention enables and to suppress because external parameter and the biogas change of production that causes because of the inner parameter that processing caused of a plurality of networking housings.
Because the present invention can extract the biogas of determining quality,, has the biogas of the methane content in the determined given range that is.Keep constant predetermined quality to make and to guarantee the biogas of extracting optimum stable (valorisation), particularly because systems stabilisation is not accepted the situation of the marked change of methane content.
In fact, the invention enables and to reduce and the movable relevant biogas mass change of atmosphere.In fact, only measuring and during the methane content of control well, only several hours after, assessing the low pressure disturbance that is caused.
Because the present invention, can regulate low pressure at each Jing Chu, thereby can regulate in time, promptly based on the quality and the atmosphere variation of methane, the low pressure variation that applies by (dPci) model makes it possible to manage the imbalance relevant with change of atmospheric pressure, reduces the mass change of biogas.
Description of drawings
After the following description that provides by non-limiting example and realize with reference to the accompanying drawings had been provided, other feature and advantage of the present invention became clear, among the figure:
Fig. 1 represents an embodiment according to equipment of the present invention; And
Fig. 2 summarizes an embodiment representing the method according to this invention.
The specific embodiment
With reference to figure 1, equipment according to the present invention comprises housing 50, and it is equipped with the first assembly 31A of first single extraction element, and at this, well 311A, 312A, 313A are connected to pipeline 70A by control valve 10A.And this equipment can comprise the second assembly 31B of at least one second single extraction element, and at this, the second well 311B is connected to pipeline 70B by control valve 10B.
As explained further below, each assembly can comprise a plurality of single extraction elements, and this equipment can comprise the assembly that a plurality of networking modes are installed.
Each single extraction element (being called well hereinafter) comprises inlet head 41A, 42A, 43A, 41B, be used for the biogas in the assembling supporting member 50, and each assembly comprises well head 20A and 20B respectively.
Between well head 20A, 20B and corresponding main line 70A, 70B, control valve 10A, 10B have been installed respectively.
This equipment comprises the device (not shown) such as constant or variable piston pump, is used for providing loine pressure Pr to pipeline 70A, 70B, and at this, be negative pressure, that is, and low pressure dPci.This equipment also is included in the device 60,10 that given position is automatically optionally opened control valve 10A, 10B respectively.Preferably, these devices comprise operating means 60, at this, are computer or automaton.This operating means can direct control control valve 10A, 10B.They comprise or are couple to adjusting device 10.Preferably, as described further below, this adjusting device comprises first adjuster and second adjuster, and they are configured to also send based on various calculation of parameter the pressure set-point of the position change that causes control valve 10A, 10B.
Communicating by letter between operating means 60 and control valve 10A, the 10B can be carried out by any known, wired or wireless means, and therefore, operating means 60 can long-rangely be provided with.
Also comprise Meteorological Device 90 according to equipment of the present invention, at least one meteorologic parameter value that it is used to measure hull outside at this, will be used for atmospheric pressure sensor, be used for the thermometer of temperature, and the rainfall gauge setting that is used for rainfall from the teeth outwards, preferably near housing 50.These Meteorological Devices 90 are communicated by letter with operating means 60.
Operating means 60 preferably includes prediction unit, at this, is the reference model of form of software, is used for according to the differentiation of the meteorologic parameter value prediction of measuring at the internal pressure Pi at each extraction assembly place.
For this reason, with the meteorologic parameter value and the reference model comparison of measuring, thereby " 1 provides the first local pressure set-point dPci1 to the adjuster R by first adjustable ring, is called the local pressure set point.
First adjustable ring is called slow adjustable ring, and this is because the variation that its consideration is caused by external condition, day/night, season and other atmospheric effects.
The gaseous mass set point that the first set point dPci makes it possible to obtain to set based on the operator (that is, come down to comprise in the biogas methane content) and the biogas of the constant-quality that extracts.Methane content is the example of an inner parameter set point; In another embodiment, it can be about low pressure dPi, gas temperature, O
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2Content etc.
Preferably, set up reference model by the preparation learning procedure.
For example, study comprises the differentiation of measuring internal pressure Pi based on the meteorologic parameter of measuring.This differentiation can be registered as reference model in operating means 60.This model can be set up in advance, when the operation housing, can constantly upgrade.
At given time, measured value and its immediate value in model of given meteorologic parameter compared.Then by preparation learning procedure assessment respective inner pressure.
Owing to, can carry out the step of the differentiation of prediction internal pressure Pi based on the meteorologic parameter of measuring, and suitable local set point dPci is provided by the reference model that learning procedure is set up.
According to this prediction that the differentiation of inner pressure P i is carried out, the position that operating means 60 sends control valve 10A, 10B then changes set point.
Therefore, the outside meteorological detection that changes makes can be expected, predict the variation of biogas production, thereby predicts the internal pressure P1 that one group of well is interior.
Should predict with perfect gas law PV=nRT and associate.If known pressure changes (pressure and temperature of measurement), then can know the Volume Changes of the biogas that (calculating) produces in housing.And experience retardation coefficient (on-the-spot definite) and environment void coefficient etc. make it possible to determine that the pressure of any side of control valve changes.
As illustration, if atmospheric pressure is constant and open control valve, and film 110 is semi permeable, and then air is inhaled into housing and dilutes methane, and this is undesirable situation.
By the present invention, though atmospheric pressure change, constant from the methane content that biogas is extracted.
Advantageously, also be included in the physical-chemical parameters value (O that is used for measuring enclosure interior that comprises in the assembly according to equipment of the present invention at least one Jing Chu
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2Content, biogas quality, pressure etc.) in comprise device, at this, be suitable sensor.
The measurement of at least one in the parameter that comprises in the assembly is preferably extracted mouth from one and sequentially and is periodically carried out to another.
Content and the reference value measured are compared, for example undertaken by operating means 60, it sends the second pressure set-point dPci2 (being called local set point), make it possible to result based on the comparison, as the overall set point dPci of the function of the described second local set point dPci2, make control valve 10A, 10B change the position.Adjuster R ' 1 by first adjustable ring provides the second set point dPci2.
Advantageously, adjusting device 10 comprises the feedback loop of the opening/closing value that relates to fiducial value and control valve, so that obtain gradually precise opening/close (position), rather than the opening/closing of all or noon type.
In this embodiment, overall pressure set-point dPci is the function of local pressure set point dPci1 and dPci2, specifically, overall set point dPci be local set point and dPci1+dPci2.
Therefore first governing stage preferably includes two adjusters.Therefore, come to adjuster R by the measurement of carrying out at adjuster R ' 1 place that " prediction that 1 place carries out is proofreaied and correct.This correction makes it possible to simultaneously that limit air enters housing and introduces oxygen under the situation that atmospheric pressure increases, and under the situation that atmospheric pressure reduces, limit possible methane and leak, and therefore calculates the set point of control valve position, the feasible optimum state that always is in.
Except that aforementioned atmospheric perturbation, also may be subjected to internal disturbance according to equipment of the present invention.
At work, to extract point be to comprise aforesaid and be connected to the system of a plurality of equipment of main line 70 each other by pipe network to biogas.Main line is connected to biogas treating apparatus 80 (stable, burning etc.).
If closed one of them network pipeline for various reasons, then (constant) low pressure that applies at main line is distributed on other pipelines.Low pressure (and then drawing flow) increases, and has the aforementioned risk that air is sucked housing.
Because the present invention is maintained fixed flow by making each valve place, perhaps more precisely, keep maximum biogas flow by keeping the constant gas quality, eliminate this risk.
The control valve position is couple to differential pressure and measures, and this defines second adjustable ring by the second adjuster R2 realization of adjusting device 10.
This second adjustable ring makes it possible to the equipment that is used for instant methane production is carried out allocation optimum.Be called fast, because it can adapt to the quick variation of biogas production.
For this reason, equipment according to the present invention comprises the device that is used for measuring at least one extraction assembly place differential pressure dPi.
The relative pressure dPi and the set-point value dPci that measure are compared, and by adjuster R1, the result carries out the position change of control valve based on the comparison.
That is, based on set point dPci, adjuster R1 sends and to be used for signal that the opening/closing of control valve is controlled, is limited to the low voltage value that this valve place applies.
Therefore, adjuster R1 at least with the differential pressure (also may be local temperature, these variablees be measured) of any side of the valve considered as input parameter.Adjuster R1 with the differential pressure value dPci that determines as set point.If measured differential pressure dPi is different with set-point value, then change valve position, to obtain the set point differential pressure by adjusting device 10.
Preferably operating means 60 is used as be used for the relative pressure that will measure and reference value relatively device and be used for result based on the comparison provides the primary importance change set point of control valve by adjusting device 10 device.
Preferably, extract mouth at each set point dPci is fixed as predetermined value.And, preferably determine this set point based on first adjustable ring.
Differential pressure is made it possible to eliminate the relevant disturbance of low pressure variation of extracting network with biogas as control variables, and for example: the isolation of interruption of service, the sub-portion of network, the state of extractor change.
Outside meteorologic parameter about measurement:
In one embodiment, because temperature is influential to biological respinse, therefore biogas is produced influential (also reducing along with temperature reduces activity, for example in winter), so external parameter is an external temperature.Yet Temperature Influence still is lower than the influence of following parameter (rainfall rate and pressure).
In one embodiment, external parameter is a rainfall rate.
On surface of shell, there is the zone that is called level of ground water (water table) fluctuation zone.These area thickness are about several meters, generally are 4 to 5 meters.According to its geographical position, depend on rainfall rate, these zones are aerobic or anoxybiotic, the result owing to do not remain under the strict anoxybiotic environment, therefore can not be used for methane and generate.
Often, these upper stratas of housing are clay (loam or other).Under the situation of raining, clay plays the effect of impermeable stratum, therefore can increase the absorption flow.
For example under stormy situation, therefore we can improve (in several hours) biogas quality rapidly.
By the present invention, owing to the control that biogas is extracted, greatly reduced the thickness in fluctuation zone, even near zero.
Advantageously, the present invention has reckoned with the influence that rainfall rate extracts biogas, because the rainfall meeting causes stopping of clay blanket.This can reduce the input of air and make it possible to improve the low pressure that provides to draw more biogas in rubbish heap.In addition, period of drought causes forming in the cover layer crack, and produces discharging area.The present invention limits the air input in the rubbish heap also by regulating the oxygen level in the biogas.
In one embodiment, external parameter is an atmospheric pressure.
When atmospheric pressure increased, the biological tolerance that produces in the housing 50 reduced, and drew the risk increase (PV=constant) of air.
On the contrary, under the situation that atmospheric pressure reduces, the biological tolerance in the housing 50 increases and biogas increases to the risk of big gas leakage.
And, if suction pressure Pi is too high, then the risk of dilution increases (atmospheric air enters housing), and if pressure P i low excessively, therefore the risk that then exists the pressure in the rubbish heap to increase exists the risk that biogas is lost in the atmosphere and the obstruction biogas production is reacted.
The invention enables and optimally to draw biogas, thereby prevent entering of air and distributing of methane.
As example, the surface of housing can be approximately one hectare.For the housing capacity of about 100 ten thousand steres, afterwards, the change of atmospheric pressure of 2mBar/h produces about 200m in the specific lag phase (delivery time/equipment inertia time)
3The biogas volume of/h changes.
About oxygen, it resists methane and generates.
In one embodiment, can in extracting mouth, provide measurement mechanism, and provide the set point relevant, thereby the oxygen that is extracted is no more than specified quantitative, therefore kept particular organisms makings amount with oxygen content at the first governing stage place.
Equally, in another embodiment, can in rubbish heap, provide measurement mechanism, this make may be in housing input air.Measured value can be used for second adjustable ring.
About covering 110 (Fig. 1), it is leakproof or semi permeable, depends on local needs and adjusting.Advantageously, leakage-proof cover makes it possible to use more significant low pressure, therefore extracts more biogas.
Preferably, the low pressure Pr of pipeline is equal to or higher than the inside low pressure Pi of rubbish heap, makes it possible to guarantee that methane is not released in the atmosphere.
The present invention can realize particularly according to two kinds of mode of operations.
In first mode of operation, target is a stabilate gas, that is, obtain constant methane content in the gas that extracts, and obtain max-flow (concentration x flow).
Advantageously, the diffusion of methane in the ground around the extraction of biogas has limited to greatest extent.
In second mode of operation, for end-of-life point and comprise, can maximize methane and extract stream (content * flow) according to housing of the present invention, particularly for security reasons, and, guarantee the minimum methane content of realizing that burning is necessary simultaneously at greenhouse gases.
By the present invention, expected that this cover control system (adjustable ring) of inside and outside disturbance makes it possible to keep in time the constant-quality of biogas.
By the present invention, the methane stream of extracting from biogas can remain predetermined value.
Claims (9)
1, a kind of method that is used for controlling from housing (50) the extraction biogas that is equipped with at least one extraction assembly (31A, 31B), each extraction assembly is connected to respective line (70A, 70B) and comprises at least one single extraction element (311A, 312A, 313A, 31B) by corresponding control valve (10A, 10B)
This method may further comprise the steps:
-provide corresponding predetermined loine pressure (Pr) to each pipeline (70A, 70B), and
-open described control valve (10A, 10B) at given position,
It is characterized in that further comprising the steps of:
The meteorologic parameter value of-measurement hull outside,
-calculate the overall set point (dPci) of differential pressure based on measured meteorologic parameter value,
-measure relative pressure (dPi) at an extraction assembly place at least,
-measured relative pressure and described set-point value (dPci) are compared, and
-result changes the position of described control valve (10A, 10B) based on the comparison.
2. method according to claim 1, this method is further comprising the steps of:
-by being compared, measured meteorologic parameter value and reference model provide the first local set point (dPci1),
-calculating is as the described overall set point (dPci) of the function of the described first local set point (dPci1).
3, method according to claim 2, the outside meteorologic parameter of wherein said measurement is included in the set that comprises atmospheric pressure, external temperature and rainfall rate.
4, according to any one the described method in the aforementioned claim, this method is further comprising the steps of:
-at least at a measuring assembly (O of extraction assembly place
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2Content, pressure, temperature) in the value of the internal regulation parameter that comprised,
-measured value and reference value are compared, and
-result provides the second local set point (dPci2) based on the comparison,
-calculating is as the described overall set point (dPci) of the function of the described second local set point (dPci2).
5, according to any one described method in the claim 2 to 4, wherein set up described reference model by the preparation learning procedure, wherein measure the differentiation of the rubbish heap internal pressure of described housing based on the value of measured outside and/or inner parameter.
6, a kind ofly be used to control the equipment that biogas is extracted, this equipment can realize according to any one described method in the aforementioned claim,
This equipment comprises:
-housing (50), it is equipped with at least one extraction assembly (31A, 31B), and each extraction assembly is connected to respective line (70A, 70B) by corresponding control valve (10A, 10B), and comprises at least one single extraction element (311A, 312A, 313A, 31B),
-be used for providing the device of loine pressure (Pr) to described respective line (70A, 70B), and
-be used for opening the device of described control valve (10A, 10B) at given position,
It is characterized in that this equipment also comprises:
-be used to measure the device of the meteorologic parameter value of described hull outside,
-be used for calculating the device of the overall set point (dPci) of differential pressure based on measured meteorologic parameter value,
-be used for measuring the device of differential pressure (dPi) at least one extraction assembly place,
-be used for device that measured relative pressure and described set-point value (dPci) are compared, and
-be used for changing the device of the position of described control valve (10A, 10B) according to comparative result.
7, equipment according to claim 6, this equipment also comprises:
-be used for providing the first local set point (dPci1) by measured meteorologic parameter value and reference model are compared, and calculating device as the described overall set point (dPci) of the function of the described first local set point (dPci1).
8, equipment according to claim 7, this equipment also comprises learning device, and it is configured to measure based on the outside meteorologic parameter value of measuring the differentiation of internal pressure (Pi), and described reference model is set up by described learning device.
9, according to any one described equipment in the claim 6 to 8, this equipment also comprises:
-be used at least one measuring assembly (O of extraction assembly place
2/ CH
4/ CO
2The device of the value of the internal physical chemical parameters that is comprised content),
-be used for device that measured value and reference value are compared, and
-being used for the device that result based on the comparison provides the second local set point (dPci2), described overall set point (dPci) is the function of the described second local set point (dPci2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0701043A FR2912331B1 (en) | 2007-02-13 | 2007-02-13 | METHOD OF EXTRACTING BIOGAS AND DEVICE THEREFOR |
| FR0701043 | 2007-02-13 | ||
| PCT/FR2007/052381 WO2008102083A1 (en) | 2007-02-13 | 2007-11-22 | Method for extracting biogas and corresponding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101631627A true CN101631627A (en) | 2010-01-20 |
| CN101631627B CN101631627B (en) | 2011-06-15 |
Family
ID=38266690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800512436A Active CN101631627B (en) | 2007-02-13 | 2007-11-22 | Method for extracting biogas and corresponding device |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20110048722A1 (en) |
| EP (1) | EP2117736A1 (en) |
| CN (1) | CN101631627B (en) |
| AU (1) | AU2007347378B2 (en) |
| BR (1) | BRPI0721329A2 (en) |
| CO (1) | CO6231012A2 (en) |
| FR (1) | FR2912331B1 (en) |
| IL (1) | IL199795A0 (en) |
| MX (1) | MX2009008630A (en) |
| WO (1) | WO2008102083A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2424969A1 (en) * | 2009-04-28 | 2012-03-07 | Stichting Dienst Landbouwkundig Onderzoek | Method and apparatus for digestion of biomass |
| EP2889363B1 (en) * | 2013-12-27 | 2017-03-01 | Liepajas Universitate | Optimal anaerobic environment maintenance system for producing biogas |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4026355A (en) * | 1975-06-30 | 1977-05-31 | Nrg Nufuel Company | Method for testing and monitoring for producing landfill gas |
| US5063519A (en) * | 1989-09-18 | 1991-11-05 | Pacific Energy | Landfill gas production testing and extraction method |
| US5269930A (en) * | 1990-07-13 | 1993-12-14 | Isco, Inc. | Apparatus and method for supercritical fluid extraction |
| US5614089A (en) * | 1990-07-13 | 1997-03-25 | Isco, Inc. | Apparatus and method for supercritical fluid extraction or supercritical fluid chromatography |
| US6169962B1 (en) * | 1996-05-07 | 2001-01-02 | Landfill Gas & Environmental Products, Inc. | Systems and methods for controlling gas flow from landfills |
| CN2268706Y (en) * | 1996-09-05 | 1997-11-26 | 范雄杰 | Methane collecting and compressing apparatus |
| DE69731951D1 (en) * | 1997-09-17 | 2005-01-20 | Publique D Aide A La Qualite D | Process and plant for the recovery of gases resulting from fermentable substances, in particular from waste |
| US8631657B2 (en) * | 2003-01-22 | 2014-01-21 | Vast Power Portfolio, Llc | Thermodynamic cycles with thermal diluent |
| KR20120101737A (en) * | 2005-05-03 | 2012-09-14 | 어드밴스드 테크놀러지 머티리얼즈, 인코포레이티드 | Fluid storage and dispensing systems, and fluid supply processes comprising same |
-
2007
- 2007-02-13 FR FR0701043A patent/FR2912331B1/en active Active
- 2007-11-22 CN CN2007800512436A patent/CN101631627B/en active Active
- 2007-11-22 EP EP07858727A patent/EP2117736A1/en not_active Withdrawn
- 2007-11-22 US US12/526,921 patent/US20110048722A1/en not_active Abandoned
- 2007-11-22 AU AU2007347378A patent/AU2007347378B2/en active Active
- 2007-11-22 WO PCT/FR2007/052381 patent/WO2008102083A1/en active Application Filing
- 2007-11-22 BR BRPI0721329-8A patent/BRPI0721329A2/en not_active IP Right Cessation
- 2007-11-22 MX MX2009008630A patent/MX2009008630A/en not_active Application Discontinuation
-
2009
- 2009-07-09 IL IL199795A patent/IL199795A0/en not_active IP Right Cessation
- 2009-07-24 CO CO09077136A patent/CO6231012A2/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CN101631627B (en) | 2011-06-15 |
| EP2117736A1 (en) | 2009-11-18 |
| FR2912331A1 (en) | 2008-08-15 |
| AU2007347378A1 (en) | 2008-08-28 |
| BRPI0721329A2 (en) | 2014-02-25 |
| AU2007347378B2 (en) | 2012-08-16 |
| CO6231012A2 (en) | 2010-12-20 |
| WO2008102083A1 (en) | 2008-08-28 |
| FR2912331B1 (en) | 2011-08-26 |
| IL199795A0 (en) | 2010-04-15 |
| MX2009008630A (en) | 2009-11-02 |
| US20110048722A1 (en) | 2011-03-03 |
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