CN106351736A - Method and system for generating electricity by excrement methane in livestock and poultry farm - Google Patents
Method and system for generating electricity by excrement methane in livestock and poultry farm Download PDFInfo
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- CN106351736A CN106351736A CN201610943058.9A CN201610943058A CN106351736A CN 106351736 A CN106351736 A CN 106351736A CN 201610943058 A CN201610943058 A CN 201610943058A CN 106351736 A CN106351736 A CN 106351736A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
- F02B2043/103—Natural gas, e.g. methane or LNG used as a fuel
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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Abstract
The invention provides a method for generating electricity by excrement methane of a livestock and poultry farm. The method comprises the following steps: (1) collecting excrement generated in the livestock and poultry farm; (2) performing anaerobic digestion on the excrement to generate methane; and (3) generating electricity by utilizing methane. The method preferably comprises the following steps: (11) filtering excrement and (12) precipitating the excrement between step (1) and step (2), (21) purifying methane between step (2) and step (3), and (4) using the generated electricity by self and/or accessing to a public power grid after the step (3). The invention further provides a related system. According to the method for generating electricity be excrement methane of the livestock and poultry farm, the excrement in the livestock and poultry farm is utilized to generate methane and generate power, so that the excrement in the livestock and poultry farm is prevented from polluting the environment, the comprehensive utilization of excrement in the livestock and poultry farm can be promoted, waste is turned into wealth, and economic benefit is generated. The method and system are suitable for large-scale popularization and application.
Description
Technical field
The present invention relates to environmental protection technical field, particularly to feces of farm processing technology field, specifically refer to one
Plant poultry feces of farm marsh gas power generation method and system.
Background technology
Developing rapidly with livestock and poultry breeding industry, plant and its surrounding enviroment problem become increasingly conspicuous, and become restriction herding
One of principal element that industry develops further.
1st, livestock and poultry farm excrement dirt the having its source in of problem:
1.1st, Excreta
Animal is had just to have Excreta, animal excrements are inevitable outcomes, livestock and poultry cultivation more inevitably produces Excreta
And feces.So, livestock and poultry feces are the unavoidable reality of aquaculture, are must be in the face of the problem with solution.
1.2nd, feces of livestock and poultry supply and demand disconnects
On the one hand it is that planting industry etc. has substantial amounts of feces of livestock and poultry demand, have seasonality；On the other hand, the excrement that plant produces
Dirty amount is big to be concentrated, often no seasonal.Therefore, livestock and poultry cultivation process causes local pollution, affects disruption of ecological balance, is unfavorable for poultry
The sustainable development of aquaculture.
1.3rd, poultry excrement and urine disposal is not proper
Rural area processes feces of livestock and poultry not in time, does not have effective manner method, governance model imperfection.Currently, China controls
The pattern of reason plant feces is a lot, comprises: manufactures biogas, manufactures organic fertilizer etc..Because rural funds are limited, technology falls
Afterwards, the reason such as some peasants are conservatively-minded is so that feces can not be processed in time.
2nd, the dirty impact existing of current livestock and poultry farm excrement mainly have following some:
2.1 livestock and poultry feces have become the primary pollution source of China's rural environmental pollution
Livestock and poultry feces are the main environmental pollutions in current China rural area.2004, State Environmental Protection Administration's Monitoring Data showed,
Pollution from livestock and poultry accounts for the 35.0%～40.0% of rural environmental pollution.By 2006, China's aquaculture cod (chemical oxygen demand
Amount) total emission volumn reaches 1.1 hundred million tons, about 12,000,000 tons of ammonia nitrogen discharge capacity, and its pollutional load had played industrial wastewater and city life
Live the summation of sewage pollution load, become the root of China's rural pollution, the life to the people and environment cause immeasurable
Impact.
2.2 livestock and poultry feces are the important carriers of zoonosiss
Zoonosiss are all the problem of country's worry from ancient times to the present, but this phenomenon remains unchanged and exists, and livestock and poultry feces are not
Appropriately use and process is main cause.The fecal sewage of undressed fowl poultry kind has substantial amounts of pathogenic bacterium and parasitic ovum,
If directly using meeting contaminated land resource, if direct discharge will cause severe contamination to water body and rural environment, lead to water
Matter deteriorates, mosquitos and flies grows, pathogenic bacteria is spread unchecked and induces an illness, and has a strong impact on life in the countryside environmental quality, and harmful to human is physically and mentally healthy,
Lead to people and animals ill, endanger the people's livelihood.
2.3 Pollution from livestock and poultries have become the bottleneck of China's agricultural sustainable development
Shift to animal husbandry from planting industry with China's agricultural economy center of gravity, ratio in China's general production value of agriculture for the animal husbandry
Weight has accounted for 33-36%.But because generally existing planning is unreasonable and the problem of " agriculture and animal husbandry disconnection ", substantial amounts of livestock and poultry feces
Do not enable comprehensive utilization of resources, dissolve in also field in time, causes severe contamination, brings a series of environment and social problem.
Therefore, for preventing rural environmental pollution, promote livestock and poultry feces comprehensive utilization it is desirable to be able to provide a kind of livestock and poultry cultivation
Field treatment for cow manure method, it is prevented from livestock and poultry farm excrement pollution environment, and promotes the dirty comprehensive utilization of livestock and poultry farm excrement,
Turn waste into wealth, produce economic benefit.
Content of the invention
In order to overcome above-mentioned shortcoming of the prior art, it is an object of the present invention to provide a kind of livestock and poultry farm excrement
Dirty marsh gas power generation method, it can produce biogas and generate electricity such that it is able to prevent livestock and poultry farm using livestock and poultry farm excrement is dirty
Excrement pollution environment, and promote the dirty comprehensive utilization of livestock and poultry farm excrement, turn waste into wealth, produce economic benefit, be suitable to push away on a large scale
Wide application.
Another object of the present invention is to providing a kind of livestock and poultry farm excrement dirt marsh gas power generation method, its design is ingenious, behaviour
Make easy, be suitable to large-scale promotion application.
Another object of the present invention is to providing a kind of livestock and poultry farm excrement dirt methane power generating system, it can utilize poultry
Feces of farm produces biogas and generates electricity such that it is able to prevent livestock and poultry farm excrement pollution environment, and promotes livestock and poultry farm
The dirty comprehensive utilization of excrement, turns waste into wealth, produces economic benefit, be suitable to large-scale promotion application.
Another object of the present invention is to providing a kind of livestock and poultry farm excrement dirt methane power generating system, its design is ingenious, knot
Structure is succinct, is suitable to large-scale promotion application.
For reaching object above, in a first aspect of the present invention, provide a kind of livestock and poultry farm excrement dirt marsh gas power generation method,
It is characterized in, comprise the following steps:
(1) collect the excrement dirt that livestock and poultry farm produces；
(2) described excrement dirt is carried out with anaerobic fermentation and produces biogas；And
(3) generated electricity using described biogas.
It is preferred that described livestock and poultry farm is poultry scale raising.
It is preferred that in described step (1), excrement cleaning up excrement technique and blister excrement cleaning up excrement are rushed using dry cleaning up excrement cleaning up excrement technique, water
It is dirty that at least one cleaning up excrement technique in technique collects described excrement.
It is preferred that between described step (1) and described step (2), described livestock and poultry farm excrement dirt marsh gas power generation method
Further comprise the steps of: (11) described excrement dirt is carried out filtration treatment and be used for removing the debris in described excrement dirt.
It is preferred that between described step (1) and described step (2), described livestock and poultry farm excrement dirt marsh gas power generation method
Further comprise the steps of: (12) described excrement dirt is carried out precipitation process and be used for removing scum silica frost and sediment in described excrement dirt.
It is preferred that in described step (2), described anaerobic fermentation adopts normal temperature fermentation, and the temperature of described anaerobic fermentation is not
Less than 10 DEG C, the time of described anaerobic fermentation is not less than 30 days.
It is preferred that between described step (2) and described step (3), described livestock and poultry farm excrement dirt marsh gas power generation method
Further comprise the steps of: (21) by described biogas carry out purified treatment make the methane content of described biogas more than 55% (v/v) with
And hydrogen sulfide content is in 20mg/m3Below.
More preferably, described purified treatment is selected from least one in gravitational method processed and dry doctor treatment.
It is preferred that in described step (3), the pressure of described biogas is not less than 3kpa.
It is preferred that after described step (3), described livestock and poultry farm excrement dirt marsh gas power generation method further comprises the steps of: (4)
The described electricity producing that generates electricity is used by oneself and/or accesses public electric wire net.
In a second aspect of the present invention, a kind of livestock and poultry farm excrement dirt methane power generating system is provided, is characterized in, including natural pond
Gas anaerobic fermentation pond and biogas generator, described biogas anaerobic fermentation pond is sent out for carrying out anaerobism using the excrement dirt of livestock and poultry farm
Ferment produces biogas, and described biogas anaerobic fermentation pond pipeline connects described biogas generator and is used for for described biogas being delivered to described natural pond
Gas electromotor, described biogas generator is used for being generated electricity using described biogas.
It is preferred that described livestock and poultry farm is poultry scale raising.
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes excrement dirt storage facility, the dirty storage of described excrement
Device is arranged on the upstream in described biogas anaerobic fermentation pond.
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes excrement dirt defecator, described excrement is dirty to be filtered
Device is arranged on the upstream in described biogas anaerobic fermentation pond.
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes excrement dirt settler, the dirty precipitation of described excrement
Device is arranged on the upstream in described biogas anaerobic fermentation pond.
It is preferred that described biogas anaerobic fermentation pond is gasbag-type biogas anaerobic fermentation pond.
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes methane purifying device, described biogas anaerobic
Fermentation vat passes through described methane purifying device pipeline and connects described biogas generator.
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes biogas storage facility, described biogas anaerobic
Fermentation vat passes through described biogas storage facility pipeline and connects described biogas generator.
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes biogas pressurizer, described biogas anaerobic
Fermentation vat connects described biogas generator by described biogas pressurizer pipeline.
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes grid-connection control device, described cutting-in control
Device circuit connects described biogas generator and is used for at least a portion of described biogas generator electricity being incorporated to public electric wire net.
Beneficial effects of the present invention essentially consist in:
1st, the livestock and poultry farm excrement dirt marsh gas power generation method of the present invention comprises the following steps: (1) is collected livestock and poultry farm and produced
Raw excrement is dirty；(2) excrement dirt is carried out with anaerobic fermentation and produces biogas；And (3) are generated electricity using biogas, therefore, it is possible to utilize
Livestock and poultry farm excrement is dirty to be produced biogas and generates electricity such that it is able to prevent livestock and poultry farm excrement pollution environment, and promotes poultry to support
Grow the dirty comprehensive utilization of an excrement, turn waste into wealth, produce economic benefit, be suitable to large-scale promotion application.
2nd, the livestock and poultry farm excrement dirt marsh gas power generation method of the present invention comprises the following steps: (1) is collected livestock and poultry farm and produced
Raw excrement is dirty；(2) excrement dirt is carried out with anaerobic fermentation and produces biogas；And (3) are generated electricity using biogas, therefore, design is ingenious,
Easy and simple to handle, it is suitable to large-scale promotion application.
3rd, the livestock and poultry farm excrement dirt methane power generating system of the present invention includes biogas anaerobic fermentation pond and biogas generator, natural pond
Gas anaerobic fermentation pond is used for carrying out anaerobic fermentation generation biogas using the excrement dirt of livestock and poultry farm, and biogas anaerobic fermentation pond pipeline is even
Connect biogas generator for biogas is delivered to biogas generator, biogas generator is used for being generated electricity using biogas, accordingly, it is capable to
Enough produce biogas and generate electricity such that it is able to prevent livestock and poultry farm excrement pollution environment using livestock and poultry farm excrement is dirty, and promote
The dirty comprehensive utilization of livestock and poultry farm excrement, turns waste into wealth, produces economic benefit, be suitable to large-scale promotion application.
4th, the livestock and poultry farm excrement dirt methane power generating system of the present invention includes biogas anaerobic fermentation pond and biogas generator, natural pond
Gas anaerobic fermentation pond is used for carrying out anaerobic fermentation generation biogas using the excrement dirt of livestock and poultry farm, and biogas anaerobic fermentation pond pipeline is even
Connect biogas generator for biogas is delivered to biogas generator, biogas generator is used for being generated electricity using biogas, therefore, if
Meter is ingenious, simple for structure, is suitable to large-scale promotion application.
The these and other objects of the present invention, feature and advantage, by following detailed descriptions, drawings and claims obtain
To fully demonstrate, and can be achieved by means, device and the combinations thereof specially pointed out in claims.
Brief description
Fig. 1 is that the technological process of a specific embodiment of livestock and poultry farm excrement dirt marsh gas power generation method of the present invention is illustrated
Figure.
Fig. 2 is to be arranged on poultry during a specific embodiment use of livestock and poultry farm excrement dirt methane power generating system of the present invention
The structural representation in plant downstream.
Specific embodiment
In order to be more clearly understood that the technology contents of the present invention, describe in detail especially exemplified by following examples.It is directed to
To relational language be explained as follows:
Livestock and poultry feces: refer to the general name of the feces, urine and waste water of livestock and poultry farm generation.
Dry cleaning up excrement cleaning up excrement technique: refer to feces of livestock and poultry through mechanically or manually collecting, urine and flushing water along dropping pit discharge clear
Excrement technique.
Water rushes excrement cleaning up excrement technique: refer to daily timing water flushing, by feces of livestock and poultry, urine and sewage along dropping pit discharge clear
Excrement technique.
Blister excrement cleaning up excrement technique: refer to inject a certain amount of water in the slurry gutte in poultry house, by feces, urine and flushing
Water is emitted in the dropping pit under slatted floor in the lump, stores certain time, opens out port strobe, the cleaning up excrement that liquid dung flows out along dropping pit
Technique.
Gasbag-type fermentation vat: refer on the basis of the earthwork excavated, bottom carries out Anti-seeping technology using hdpe film, top is adopted
Do floating covering with hdpe film to be sealed, carry out sealing a kind of anaerobic reation pool being formed by counterdie and teleblem.
Biogas engineering: refer to the fecal sewage anaerobic digestion of livestock and poultry farm as main technologies, collection sewage disposal, natural pond
The system engineering that gas produces, recycling is integrated.
Marsh gas power generation is grid-connected: the electric current that Biogas Generator Set is produced accesses public electric wire net through power transmission and transforming equipment.
Shown in Figure 1, in a specific embodiment of the livestock and poultry farm excrement dirt marsh gas power generation method of the present invention, this
The livestock and poultry farm excrement dirt marsh gas power generation method of invention comprises the following steps:
(1) collect the excrement dirt that livestock and poultry farm produces；
(2) described excrement dirt is carried out with anaerobic fermentation and produces biogas；And
(3) generated electricity using described biogas.
Described livestock and poultry farm can be any suitable livestock and poultry farm, for guaranteeing enough excrement dirt fermenting and producing natural ponds
Gas, in a specific embodiment of the present invention, described livestock and poultry farm is poultry scale raising.Livestock and poultry cultivation scale requirements are
Pig breeding farm live pig livestock on hand more than 2000, dairy cow farm milch cow livestock on hand more than 300, breeding layer chicken field laying hen livestock on hand 10
More than ten thousand plumages.Plant's outdoor drainage carries out the dirty separation of rain, and has airtight sewage collecting induction system.
Collect described excrement dirt and can adopt any suitable technique, it is preferred that in described step (1), using dry cleaning up excrement
It is dirty that at least one cleaning up excrement technique that cleaning up excrement technique, water rush in excrement cleaning up excrement technique and blister excrement cleaning up excrement technique collects described excrement.Poultry
It is clear that excrement dirt should produce day daily.Shown in Figure 1, in a specific embodiment of the present invention, in described step (1), using water
Rush excrement cleaning up excrement technique and collect described excrement dirt.
Described excrement is dirty should to carry out strenuous primary treatment before fermentation, in order to remove the chicken feather in described excrement dirt, weeds, sand
The debris such as stone, shown in Figure 1, in a specific embodiment of the present invention, described step (1) and described step (2) it
Between, described livestock and poultry farm excrement dirt marsh gas power generation method further comprises the steps of: (11) described excrement dirt is carried out filtration treatment and is used for
Except debris such as the chicken feather in the dirt of described excrement, weeds, sandstones.Described debris refer to such as chicken feather, weeds, sandstone etc., so that after
During continuous, the breeding of zymogenous bacteria raised growth, slows down acidization, after preventing feed liquid from entering pond, argol floats on upper strata and crusts,
Or produce that hyper acid so that fermentation is obstructed.Described filtration can be any suitable filtration, such as grid filtration.
Described excrement is dirty should to carry out strenuous primary treatment before fermentation, in order to remove scum silica frost and sediment in described excrement dirt,
Shown in Figure 1, in a specific embodiment of the present invention, between described step (1) and described step (2), described poultry
Fowl feces of farm marsh gas power generation method further comprises the steps of: (12) and described excrement dirt is carried out precipitation process to be used for removing described excrement dirty
In scum silica frost and sediment.
Described anaerobic fermentation can adopt any suitable condition, it is preferred that in described step (2), described anaerobism is sent out
Ferment adopts normal temperature fermentation, and the temperature of described anaerobic fermentation is not less than 10 DEG C, and the time of described anaerobic fermentation is not less than 30 days.Sewage
Organic substance is degraded under microbial action and is converted into biogas.In a specific embodiment of the present invention, in described step (2)
In, described anaerobic fermentation adopts normal temperature fermentation, and the temperature of described anaerobic fermentation is 20 DEG C, and the time of described anaerobic fermentation is 40
My god.
In order to ensure being smoothed out of marsh gas power generation, shown in Figure 1, in a specific embodiment of the present invention,
Between described step (2) and described step (3), described livestock and poultry farm excrement dirt marsh gas power generation method further comprises the steps of: (21) will
Described biogas carries out purified treatment and the methane content of described biogas is existed in more than 55% (v/v) and hydrogen sulfide content
20mg/m3Below.
Described purified treatment can be any suitable purified treatment, and more preferably, described purified treatment is selected from gravitational method and takes off
At least one in water process and dry doctor treatment.In a specific embodiment of the present invention, described purified treatment includes gravitational method
Processed and dry doctor treatment.Gravitational method processed removes the water vapour in biogas, and dry doctor treatment removes the sulfuration in biogas
Hydrogen.
In order to ensure being smoothed out of marsh gas power generation, it is preferred that in described step (3), the pressure of described biogas is not low
In 3kpa.In a specific embodiment of the present invention, in described step (3), the pressure of described biogas is 5kpa.
In order to make full use of using biogas electricity, it is preferred that after described step (3), described livestock and poultry farm excrement
Dirty marsh gas power generation method further comprises the steps of: (4) and the described electricity producing that generates electricity is used by oneself and/or accesses public electric wire net.Here " from
With and/or access public electric wire net " include personal, access public electric wire net and personal and access three kinds of situations of public electric wire net.Please join
As shown in Figure 1, in a specific embodiment of the present invention, after described step (3), described livestock and poultry farm excrement dirt biogas is sent out
Method for electrically further comprises the steps of: (4) and the described electricity producing that generates electricity is used by oneself and accesses public electric wire net.
Shown in Figure 2, in a specific embodiment of the livestock and poultry farm excrement dirt methane power generating system of the present invention, this
The livestock and poultry farm excrement dirt methane power generating system of invention includes biogas anaerobic fermentation pond and biogas generator, and described biogas anaerobic is sent out
Ferment pond is used for carrying out anaerobic fermentation generation biogas using the excrement dirt of livestock and poultry farm, and described biogas anaerobic fermentation pond pipeline connects institute
State biogas generator for described biogas is delivered to described biogas generator, described biogas generator is used for using described biogas
Generated electricity.
As described above, described livestock and poultry farm can be any suitable livestock and poultry farm, send out for guaranteeing that enough excrement are dirty
Ferment produces biogas, and in a specific embodiment of the present invention, described livestock and poultry farm is poultry scale raising.Livestock and poultry cultivation is advised
Mould requires as pig breeding farm live pig livestock on hand more than 2000, dairy cow farm milch cow livestock on hand more than 300, breeding layer chicken field egg
More than chicken livestock on hand 100,000 plumage.Plant's outdoor drainage carries out the dirty separation of rain, and has airtight sewage collecting induction system.
Dirty in order to store described excrement, shown in Figure 2, in a specific embodiment of the present invention, described livestock and poultry cultivation
Field excrement dirt methane power generating system also includes excrement dirt storage facility, and described excrement dirt storage facility is arranged on described biogas anaerobic fermentation pond
Upstream.
Described excrement is dirty should to carry out strenuous primary treatment before fermentation, in order to remove the chicken feather in described excrement dirt, weeds, sand
The debris such as stone, it is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes excrement dirt defecator, described excrement is dirty to be filtered
Device is arranged on the upstream in described biogas anaerobic fermentation pond.Shown in Figure 2, in a specific embodiment of the present invention,
In the case that described livestock and poultry farm excrement dirt methane power generating system also includes excrement dirt storage facility, described excrement dirt defecator setting
Upstream in described excrement dirt storage facility.It is of course also possible in turn, described excrement dirt storage facility can also be arranged on described excrement
The upstream of dirty defecator.
Described excrement dirt defecator can be any suitable defecator, in a specific embodiment of the present invention, institute
Stating excrement dirt defecator is grid filtration device.Grid grizzly bar gap width 25mm～40mm, grid is preferably 60 degree according to angle,
When sewage quantity is larger, preferably adopt mechanical grille.
Described excrement is dirty should to carry out strenuous primary treatment before fermentation, in order to remove scum silica frost and sediment in described excrement dirt,
It is preferred that described livestock and poultry farm excrement dirt methane power generating system also includes excrement dirt settler, described excrement dirt settler setting
Upstream in described biogas anaerobic fermentation pond.Shown in Figure 2, in a specific embodiment of the present invention, in described poultry
In the case that feces of farm methane power generating system also includes excrement dirt storage facility, described excrement dirt settler is arranged on described excrement
The upstream of dirty storage facility.It is of course also possible in turn, described excrement dirt storage facility can also be arranged on described excrement dirty precipitation dress
The upstream put.
As in the presence of described excrement dirt defecator and described excrement dirt settler are equal, described excrement is dirty to filter dress
Putting can be any with described excrement dirt settler sequencing, shown in Figure 2, in a specific embodiment of the present invention,
Described excrement dirt defecator is located at the upstream of described excrement dirt settler.
Described excrement dirt settler can be any suitable excrement dirt settler, in a specific embodiment of the present invention
In, described excrement dirt settler is desilting collecting-tank.Capacity is not less than the 50% of the dirt discharge capacity of human excrement.
Described biogas anaerobic fermentation pond can be any suitable biogas anaerobic fermentation pond, and in the present invention is embodied as
In example, described biogas anaerobic fermentation pond is gasbag-type biogas anaerobic fermentation pond.Gasbag-type marsh gas fermentation pool has excrement dirty storage work(concurrently
Can, using Anti-seeping technology technique, must not polluted underground water, can be not provided with such cases excrement dirt storage facility.Gasbag-type natural pond
The total dischargeable capacity of gas fermentation vat should determine according to cultivation total amount and storage period, typically every pig is no less than 0.5m3, every cattle many
In 2m3, every chicken be no less than 0.02m3, storage period typically cannot be less than 60 days.Gasbag-type marsh gas fermentation pool should be provided with to be prevented from surpassing
The safety device of positive and negative pressure and measure, the safety range of safety device should meet the pressure of technological design and wanting of cell body safety
Ask.Measuring equipment and the instrument such as the applicable mensure tolerance of configuration, air pressure, temperature, ph value, liquid dung amount are needed according to technique.
In order to ensure being smoothed out of marsh gas power generation, shown in Figure 2, in a specific embodiment of the present invention, institute
State livestock and poultry farm excrement dirt methane power generating system and also include methane purifying device, described biogas is passed through in described biogas anaerobic fermentation pond
Purifier pipeline connects described biogas generator.Fire damp content after purified treatment for the biogas that anaerobic fermentation produces
In more than 55% (v/v), hydrogen sulfide content is less than 20mg/m3.
Described methane purifying device can be any suitable methane purifying device, for example, gravity dehydration device and dry method
Desulfurizer.Gravity dehydration device removes the water vapour in biogas, and dry desulfurization device removes the hydrogen sulfide in biogas.
The biogas that anaerobic fermentation produces must utilize completely, must not be directly to environmental emission, in order to store described biogas, preferably
Ground, described livestock and poultry farm excrement dirt methane power generating system also includes biogas storage facility, and institute is passed through in described biogas anaerobic fermentation pond
State biogas storage facility pipeline and connect described biogas generator.Shown in Figure 2, in a specific embodiment of the present invention,
In the case that described livestock and poultry farm excrement dirt methane power generating system also includes methane purifying device, described methane purifying device leads to
Cross described biogas storage facility pipeline and connect described biogas generator.
Described biogas storage facility can be any suitable biogas storage facility, in a specific embodiment of the present invention
In, described biogas storage facility is low pressure storage tank.Operating pressure is less than 10kpa, and volume is advisable with 20-30 cubic meter.
In order to ensure being smoothed out of marsh gas power generation, it is preferred that described livestock and poultry farm excrement dirt methane power generating system also wraps
Include biogas pressurizer, described biogas anaerobic fermentation pond connects described biogas generator by described biogas pressurizer pipeline.
Shown in Figure 2, in a specific embodiment of the present invention, also include in described livestock and poultry farm excrement dirt methane power generating system
In the case of biogas storage facility, described biogas storage facility connects described marsh gas power generation by described biogas pressurizer pipeline
Machine.Biogas supply gas pressure should meet biogas generator technical requirements, and the biogas pressure generally entering biogas generator is not less than
3kpa.
Described biogas generator can be any suitable biogas generator, in a specific embodiment of the present invention, institute
Stating biogas generator is single fuel biogas generator.The capacity of described single fuel biogas generator typically preferably selects 50kw-
250kw.
Described biogas generator can arrange multiple stage, forms generating set, can be so that using the mode that electrically activates, startup power supply can
To adopt accumulator battery.Shutdown can control by generating set, also can be by button control of stopping in emergency on control panel panel.For protecting
Demonstrate,prove continuous uninterrupted power supply, should be furnished with standby unit, standby unit quantity is pressed with 1 for 1 configuration, and two generating sets are according to single file
It is arranged in juxtaposition.Generating set should be equipped with intelligent automatic air circuit breaker, when there is excessively stream or inverse probability, can disjunction is main automatically opens
Close visual alarm of concurrently speaking.
In order to make full use of using biogas electricity, in addition to livestock and poultry farm is used by oneself, remaining electricity can be grid-connected, refers to Fig. 2
Shown, in a specific embodiment of the present invention, described livestock and poultry farm excrement dirt methane power generating system also includes cutting-in control dress
Put, described grid-connection control device circuit connects described biogas generator and is used at least one of described biogas generator electricity
Divide and be incorporated to public electric wire net.
Marsh gas power generation grid-connected general using generating power for their own use, in the form of remaining electricity online.The electricity price of national regulation is pressed by electric company
Standard protection in full purchases electricity volume.Between generating set and low voltage electric network, grid-connection control device is installed, plays generating
Grid-connected protective effect.Grid-connection control device typically can be equipped with directional over-current protection, electric current time limit fast tripping protection, low pressure vibration of low week
The current protective devices such as off-the-line protection.
Marsh gas power generation grid-connected employing low-pressure side is grid-connected, and grid-connected place is place substation low-voltage side.External power grid circuit cut
Area considers, capacity of distribution transform is not less than generating set as the maximum of plant's peak load, both generating set installed capacitys
Total installation of generating capacity.
When above-mentioned livestock and poultry farm excrement dirt methane power generating system uses, as shown in Fig. 2 being arranged under livestock and poultry farm
Trip, then the debris such as the dirty chicken feather being removed by excrement dirt defecator in described excrement dirt of the excrement of livestock and poultry farm, weeds, sandstone, then
Remove scum silica frost and the sediment in excrement dirt by excrement dirt settler, be then stored in excrement dirt storage facility, when needing fermentation
It is delivered to the fermentation of biogas anaerobic fermentation pond and produces biogas, biogas is stored in biogas storage after being purified by methane purifying device
In device, it is delivered to biogas generator when needing marsh gas power generation after biogas pressurizer supercharging and generates electricity, electricity one
Divide personal, remainder is incorporated to public electric wire net by grid-connection control device.
The livestock and poultry farm excrement dirt marsh gas power generation method of the present invention passes through to collect the excrement dirt that livestock and poultry farm produces, then right
Excrement dirt carries out anaerobic fermentation and produces biogas, recycles biogas to be generated electricity, and, in addition to personal, remaining electricity is grid-connected for electricity, thus not only
The excrement having processed livestock and poultry farm generation is dirty, it is to avoid environmental pollution, and using the dirty marsh gas power generation producing of excrement, has reached change
Waste be changed into values, increases the effect of economic benefit.
To sum up, the livestock and poultry farm excrement dirt marsh gas power generation method of the present invention can produce biogas using livestock and poultry farm excrement is dirty
And generate electricity such that it is able to prevent livestock and poultry farm excrement dirty pollution environment, and promote the dirty comprehensive utilization of livestock and poultry farm excrement, become give up into
Treasured, produces economic benefit, is suitable to large-scale promotion application.
As can be seen here, the purpose of the present invention completely and is effectively achieved.The function of the present invention and structural principle
Shown in an embodiment and illustrated, without departing substantially under described principle, embodiment can arbitrarily be changed.So, this
The bright all variant embodiment including based on claim spirit and right.
Claims (10)
1. a kind of livestock and poultry farm excrement dirt marsh gas power generation method is it is characterised in that comprise the following steps:
(1) collect the excrement dirt that livestock and poultry farm produces；
(2) described excrement dirt is carried out with anaerobic fermentation and produces biogas；And
(3) generated electricity using described biogas.
2. livestock and poultry farm excrement as claimed in claim 1 dirt marsh gas power generation method it is characterised in that in described step (1) and
Between described step (2), described livestock and poultry farm excrement dirt marsh gas power generation method further comprises the steps of:
(11) described excrement dirt is carried out filtration treatment to be used for removing the debris in described excrement dirt.
3. livestock and poultry farm excrement as claimed in claim 1 dirt marsh gas power generation method it is characterised in that in described step (1) and
Between described step (2), described livestock and poultry farm excrement dirt marsh gas power generation method further comprises the steps of:
(12) described excrement dirt is carried out precipitation process to be used for removing the scum silica frost in described excrement dirt and sediment.
4. livestock and poultry farm excrement as claimed in claim 1 dirt marsh gas power generation method it is characterised in that in described step (2) and
Between described step (3), described livestock and poultry farm excrement dirt marsh gas power generation method further comprises the steps of:
(21) described biogas is carried out purified treatment and make the methane content of described biogas in more than 55% (v/v) and hydrogen sulfide
Content is in 20mg/m3Below.
5. livestock and poultry farm excrement as claimed in claim 1 dirt marsh gas power generation method it is characterised in that described step (3) it
Afterwards, described livestock and poultry farm excrement dirt marsh gas power generation method further comprises the steps of:
(4) the described electricity producing that generates electricity is used by oneself and/or access public electric wire net.
6. a kind of livestock and poultry farm excrement dirt methane power generating system is it is characterised in that include biogas anaerobic fermentation pond and marsh gas power generation
Machine, described biogas anaerobic fermentation pond is used for carrying out anaerobic fermentation generation biogas using the excrement dirt of livestock and poultry farm, and described biogas is detested
Aerobe fermentation pond pipeline connects described biogas generator and is used for for described biogas being delivered to described biogas generator, described marsh gas power generation
Machine is used for being generated electricity using described biogas.
7. livestock and poultry farm excrement as claimed in claim 6 dirt methane power generating system is it is characterised in that described livestock and poultry farm excrement
Dirty methane power generating system also includes excrement dirt defecator, and described excrement dirt defecator is arranged on the upper of described biogas anaerobic fermentation pond
Trip.
8. livestock and poultry farm excrement as claimed in claim 6 dirt methane power generating system is it is characterised in that described livestock and poultry farm excrement
Dirty methane power generating system also includes excrement dirt settler, and described excrement dirt settler is arranged on the upper of described biogas anaerobic fermentation pond
Trip.
9. livestock and poultry farm excrement as claimed in claim 6 dirt methane power generating system is it is characterised in that described livestock and poultry farm excrement
Dirty methane power generating system also includes methane purifying device, and described methane purifying device pipeline is passed through even in described biogas anaerobic fermentation pond
Connect described biogas generator.
10. livestock and poultry farm excrement as claimed in claim 6 dirt methane power generating system is it is characterised in that described livestock and poultry farm
Excrement dirt methane power generating system also includes grid-connection control device, and described grid-connection control device circuit connects described biogas generator and is used for
At least a portion of described biogas generator electricity is incorporated to public electric wire net.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610943058.9A CN106351736A (en) | 2016-10-26 | 2016-10-26 | Method and system for generating electricity by excrement methane in livestock and poultry farm |
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| CN201610943058.9A CN106351736A (en) | 2016-10-26 | 2016-10-26 | Method and system for generating electricity by excrement methane in livestock and poultry farm |
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| CN201610943058.9A Pending CN106351736A (en) | 2016-10-26 | 2016-10-26 | Method and system for generating electricity by excrement methane in livestock and poultry farm |
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Application publication date: 20170125 |