CN109943472A - A kind of biogas fermentation device and its application - Google Patents
A kind of biogas fermentation device and its application Download PDFInfo
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- CN109943472A CN109943472A CN201711397176.5A CN201711397176A CN109943472A CN 109943472 A CN109943472 A CN 109943472A CN 201711397176 A CN201711397176 A CN 201711397176A CN 109943472 A CN109943472 A CN 109943472A
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- cow dung
- desulfurization
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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 discloses a kind of biogas fermentation devices, including tank body and tank deck, and desulfurization oxidant layer is provided between the tank body and tank deck, and air storing cavity is formed between the desulfurization oxidant layer and tank deck, and the desulfurization oxidant layer includes cow dung；The present invention directly as desulfurizing agent, contains desulfurization microorganism using cow dung in cow dung, significant desulfurization effect has not only saved cost, moreover it is possible to recycle with commercially available desulfurization microbial ratio.
Description
Technical field:
The invention belongs to the biogas fermentation devices and its application of biogas fermentation field more particularly to a kind of simple economy.
Background technique:
Biogas is biomass energy, belongs to renewable resource, with rapid development of economy, organic waste, high concentration
The anaerobic digestion techniques of organic wastewater are rapidly developed and are promoted, and the cleaning development and utilization of biogas is increasingly becoming main research
Direction.Biogas is a kind of mixed gas, mainly in addition to this also contains H2S containing CH4 and CO2.Hydrogen sulfide to pipeline, instrument,
Metal equipment has corrosivity, also, the sulfur dioxide that hydrogen sulfide generates that burns also has certain pollution to environment.How by natural pond
Hydrogen sulfide in gas removes, and is the key link in biogas production process.
The method of biogas removal hydrogen sulfide has dry desulfurization, wet desulphurization and biological desulphurization.Dry desulfurization needs continually
With changing desulfurizing agent, cause large labor intensity, operating cost high, large-scale application has been eliminated.Wet desulphurization uses lye (NaOH
Or Na2CO3) and biogas counter current contacting removing hydrogen sulfide, by specific catalyst (naphthoquinones substance) in regeneration tank, by alkali
Vulcanization hydrogen catalysis after liquid absorbs generates elemental sulfur, thiosulfate, sulfate, while lye is largely regenerated, can be after
Continue and absorb hydrogen sulfide in scrubbing tower, complex process needs staff on duty, and equipment investment cost is big.Biological desulphurization is by a certain amount of sky
Conductance enters in the biogas containing hydrogen sulfide, and mixed gas is by biofilter, bio-trickling filter to remove hydrogen sulfide, biological desulphurization
Need to control temperature and reaction time, condition is harsh.
Biological desulfurizing technology includes biofiltration process, biosorption process and biological island, and three kinds of systems belong to Open System
System, microbial population change with environment and are changed.During biological desulphurization, the sulfurous pollutants of oxidation state for biology through going back
Then original work generation sulfide or H2S generate simple substance removal of sulphur through biological oxidation process again.Biological desulfurizing technology is the eighties
The conventional desulfurization substitution new process to grow up, has many advantages: being not required to catalyst and oxidant (except air), be not required to locate
Physicochemical sludge, generates seldom biological pollution, and sulphur, high-efficient, odorless are recycled in low energy consumption.
Existing sulfur method usually requires except marsh-gas fermentation tank, then adds a set of desulphurization plant；Such as:
A kind of methane bio-desulfurization device is disclosed in CN106381183A comprising desulfurizing tower, bioreactor and sulphur separator,
Additional addition desulphurization plant necessarily will increase the cost of project cost, and will increase the difficulty of construction.
In order to solve cost problem, CN105251338A discloses a kind of biogas desulfurization technique of anaerobic reaction, disclosure
Desulfurizer is located to the top of marsh gas reactor, includes filler support and biologic packing material layer；But biologic packing material layer
There is macromolecular material to be made, and inside will include a variety of desulfurizing bacterias.But the device still has problem, a side
Face, macromolecular material and desulfurizing bacteria it is expensive；On the other hand, using desulfurizing bacteria as biological desulphurization agent also
The growth of one drawback, bacterium needs harsh growing environment and nutritional ingredient, in order to keep the fertility of bacterium and take off
Sulphur performance is necessarily required to provide sufficient nutritional ingredient, and also wants the vigor of periodic detection bacterium, this is to entire biogas fermentation
The normal operation of device brings unnecessary trouble.
For the problems of the prior art, the present invention provides one kind, and biological desulphurization processing is carried out directly in anaerobic fermentation
Method, to reduce later period desulfurization process cost.Easily solves equipment investment height, technology controlling and process is complicated, and process is not easily-controllable
System, condition require the problems such as harsh.
Summary of the invention:
To solve the above-mentioned problems, the present invention provides following technical schemes:
A kind of biogas fermentation device, including tank body and tank deck are provided with desulfurization oxidant layer between the tank body and tank deck, described
Air storing cavity is formed between desulfurization oxidant layer and tank deck, and collecting methane pipe is additionally provided on the tank deck.
In one embodiment, the desulfurizing agent is placed in desulfurizing agent support device.
In one embodiment, the desulfurizing agent support device includes ventilative mesh, and the mesh can be selected from
Air Filter, ventilative cotton or strainer, the diameter of the mesh preferred 1-10mm, more preferable 1-5mm, more preferable 1-2mm.
In another embodiment, the desulfurizing agent support device is also placed on the supporting course for supporting ventilative mesh,
The supporting course supports ventilative mesh, and the supporting course is made of batten, ropy or other similar object, the ropy
It is preferred that nylon rope, the structure for supporting course is arranged in parallel strip arrangement, " well " font, sphere of movements for the elephants shape arranges or spoke-like
Arrangement.
In one embodiment, the desulfurization oxidant layer can be not interposing in desulfurizing agent support device, and be placed directly within use
Batten or ropy are arranged on reticular structure, the preferred 1-10mm in the aperture of formed reticular structure, more preferable 1-5mm, more excellent
Select 1-2mm.
The desulfurization oxidant layer contains cow dung.
In one embodiment, the cow dung is the cow dung from farm.Preferably, the cow dung need to be by pre- place
Reason, the pretreatment include that cow dung is added to water cleaning, purification, remove the silt particle in cow dung；Preferably, after adding water, in cow dung water
Solid content is 1-10%, preferably 1-5%, more preferable 1-2%.
Further, the cow dung water is also needed through overexposure air-treatment, and the Ventilation Rate is 1-10L/ hours, it is preferable that
3-5L/ hours；Aeration time is 12-48h, preferably 20-40h, more preferable 24-36h, more preferably for 24 hours；Preferably, it is disposed
Cow dung water in solid content be 1-10%, preferably 3-5%.
Further, the temperature of the Air Exposure is room temperature, is preferably carried out in the purification plant.
Preferably, treated that cow dung water is placed in desulfurizing agent support device by described, cow dung with a thickness of 1-5mm, it is excellent
Select 2mm.
The tank deck of the biogas fermentation device is hard material or air film material, the preferred PVC, PE of the air film material, Asia
Gram force, PVDF, EPDM.
On the other hand, biogas fermentation device of the invention further includes air pipeline, is provided with flow on the air pipeline
Meter, check-valves and regulating valve, air pipeline are connect with air pump.
Technical scheme is as follows:
The utility model has the advantages that desulfurization layer is arranged at the top of biogas fermentation device in the present invention, storage is formed between desulfurization layer and tank deck
In air cavity, there is certain temperature and humidity in air storing cavity body, biogas is when passing through desulfurization layer, in the presence of having oxygen,
Hydrogen sulfide gas is desulfurized layer and is reduced into sulphur monomer, is trapped on filter screen, to achieve the purpose that remove hydrogen sulfide.The present invention
Desulfurization process is carried out directly in biogas fermentation device, reduces later period desulfurization process cost.
In addition, the present invention using cow dung directly as desulfurizing agent, contain desulfurization microorganism in cow dung, significant desulfurization effect,
With commercially available desulfurization microbial ratio, cost has not only been saved, moreover it is possible to recycle；If directlying adopt the progress of desulfurization microorganism
The growth and breeding of desulfurization, desulfurization microorganism needs nutriment, after biogas fermentation device has run a fermentation period, desulfurization
Microbes face the risk that vigor is lost and desulphurizing ability reduces, and it is micro- need to supplement again desulfurization in order to improve desulfurization effect
Biology；But the nutritional ingredient in cow dung itself can be used as substance needed for desulfurization microorganism grows, and therefore, and isolate and purify
Desulfurization microbial ratio can be recycled using cow dung directly as desulfurizing agent, and in actual use, cow dung is as de-
5-10 can be used in sulphur layer, and no replacement is required, has not only saved cost, has also improved utilization efficiency.
Detailed description of the invention:
Fig. 1 biogas fermentation device schematic diagram of the present invention, wherein 1- tank body, 2- tank deck, 3- desulfurization oxidant layer, 4- air storing cavity,
5- collecting methane pipe, 6- desulfurizing agent support device, 7- supporting course, 8- material interface, 9- column, 10- air pipeline, 11- flow
Meter, 12- regulating valve, 13- check-valves, 14- air pump.
Specific embodiment:
1 biogas fermentation device of embodiment
As shown in Figure 1, the biogas fermentation device includes tank body 1 and tank the present invention provides a kind of biogas fermentation device
Top 2；Desulfurization oxidant layer 3 is provided between the tank body and tank deck, in one embodiment, the desulfurization oxidant layer is cow dung,
In other embodiment, the desulfurization oxidant layer includes cow dung and other desulfurizing agents, preferably biological desulphurization agent；The desulfurizing agent
Air storing cavity 4 is formed between layer and tank deck, for storing the biogas Jing Guo desulfurization；The desulfurizing agent is placed on desulfurizing agent support device
On 6, the desulfurizing agent support device is strainer, and the aperture of strainer is 1.5mm, in other implementations, the desulfurizing agent
Support device can also be Air Filter or ventilative cotton；The strainer is placed on supporting course 7, and supporting course is the Buddhist nun at spoke-like arrangement
Long Sheng installs the thick nylon rope of a 8-10mm from middle standing pillar 9 to tank body 1 every a distance, forms supporting course.Supporting course
It is placed on tank interior material interface 8.
Collecting methane pipe 5 is additionally provided on tank deck 2, in the present embodiment, tank deck 2 is air film top, and the material on air film top is
The surrounding outer on PE material, air film top surrounding outer and tank body top seals.When the collecting methane in air storing cavity to a certain extent
When, due to the intracorporal pressure increase of tank, it will lead to air film flatulence and expand, biogas can be discharged by collecting methane pipe at this time.Tank body 1
On be additionally provided with air pipeline 10, flowmeter 11, regulating valve 12, check-valves 13 and air are additionally provided on the air pipeline 10
Pump 14.
The preparation of 2 desulfurizing agent of embodiment
The present invention, as biogas desulfurizer, selects the cow dung from Shandong, Inner Mongol Deng Di farm, by ox using cow dung
Excrement is brushed onto strainer, and the biogas of tank body fermentation can have the strainer of cow dung to reach air storing cavity by brushing, by the desulfurization of cow dung
It handles, the hydrogen sulfide content in biogas will substantially reduce.
In order to improve the desulfurization effect of cow dung, the present invention pre-processes cow dung.Firstly, washing, purification cow dung, are removed
Remove silt；Later, air is passed through in cow dung, Ventilation Rate is 2-10L/ hours, duration of ventilation 12-48h；It finally obtains
Solid content in cow dung is maintained at 1-10%.
In order to optimize the desulfurization effect of cow dung, the present invention has carried out two factorial experiments, using different Ventilation Rates and leads to
The gas time pre-processes cow dung, and the desulfurization effect of cow dung under the conditions of different disposal is verified by trial test, sulphur in biogas before handling
The content for changing hydrogen is 2000ppm, experimental design and the results are shown in Table 1.
Influence of the 1 cow dung pretreating process of table to desulfurization effect
Note: the hydrogen sulfide content in table 1 before biogas treatment is 2000ppm
As shown in Table 1, when duration of ventilation lower than 20 it is small when or be higher than 36 it is small when, the desulfurization effect of cow dung is bad,
This is because the too short breeding for being unfavorable for desulfurization microorganism in cow dung of duration of ventilation, still, if the time is too long, other in cow dung
Microorganism also can mass propagation, the desulfurization effect of desulfurization microorganism can be weakened.When duration of ventilation is in 20-36h, Ventilation Rate
3-7L/ hours, the desulfurization effect of cow dung was preferable, especially duration of ventilation be for 24 hours, Ventilation Rate be 3-5L/ hours, cow dung
Desulfurization effect is best.
The application of 3 biogas fermentation device of embodiment
The cow dung in Shandong, Inner Mongol Deng Di farm is collected, washing removal silt keeps the solid content in cow dung water
In 1-2%, air is then passed through with the rate of 3-5L/h, duration of ventilation is for 24 hours；Ventilation finishes, and controls the solid in cow dung water
Object content is squeegeed on filter screen 5% or so, is brushed with a thickness of 2mm or so, later, carries out biogas fermentation, desulfurization.
The effect of four kinds of different strainers of pore size is compared, mesh diameter is respectively 1mm, 2mm, 3mm and 5mm, is respectively placed in four
In a different biogas fermentation device.As shown in Table 2, when aperture of filter screen is more than 3mm, biogas and desulfurization agent time compared with
It is short, it will affect desulfuration efficiency, when aperture of filter screen is 1-2mm, desulfurization effect is best.
The comparison of the desulfurization effect of 2 different pore size strainer of table
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. a kind of biogas fermentation device, including tank body (1) and tank deck (2), which is characterized in that the tank body (1) and tank deck (2) it
Between be provided with desulfurization oxidant layer (3), between the desulfurization oxidant layer and tank deck formed air storing cavity (4), the desulfurization oxidant layer (3) include ox
Excrement.
2. the apparatus according to claim 1, which is characterized in that state desulfurization oxidant layer (3) and be placed in desulfurizing agent support device (6)
On；Preferably, the desulfurizing agent support device includes ventilative mesh；Preferably, the ventilative mesh be selected from Air Filter, thoroughly
Gas cotton or strainer；Preferably, the diameter of the ventilative mesh mesh is 1-10mm, more preferable 1-5mm, more preferable 1-2mm.
3. according to right want 2 described in device, which is characterized in that the desulfurizing agent support device (6) is placed on supporting course (7),
The supporting course (7) supports desulfurizing agent support device (6)；Preferably, the structure for supporting course (7) is arranged in parallel strip
Column, the arrangement of " well " font, the arrangement of sphere of movements for the elephants shape or spoke-like arrangement；Preferably, the supporting course (7) by batten, ropy or
Other similar object is constituted；Preferably, the ropy is selected from nylon rope.
4. the apparatus of claim 2, which is characterized in that the desulfurizing agent support device (6), which is selected from, uses batten or rope
The reticular structure that shape object is arranged in, the preferred 1-10mm in the aperture of formed reticular structure, more preferable 1-5mm, more preferable 1-2mm；
Preferably, the ropy is selected from nylon rope.
5. device described in -4 according to claim 1, which is characterized in that the cow dung is the cow dung by Air Exposure；It is preferred that
, the condition of the Air Exposure is as follows: Ventilation Rate is 1-10L/ hours, it is preferable that 3-5L/ hours；Aeration time is 12-
48h, preferably 24-36h, more preferably for 24 hours；Preferably, the temperature of the Air Exposure is room temperature, preferably in aeration purification device
It carries out；Preferably, the solid content in the cow dung after the Air Exposure is 1-10%, preferably 3-5%.
6. device according to claim 5, which is characterized in that the cow dung is before Air Exposure also by pretreatment step
Suddenly；The pretreatment includes: that cow dung is added water cleaning, purification, removes the silt particle in cow dung；Preferably, after adding water, in cow dung water
Solid content is 1-10%, preferably 1-5%, more preferable 1-2%.
7. according to claim 1, device described in 5-6, which is characterized in that in the desulfurization oxidant layer cow dung with a thickness of 1-5mm,
It is preferred that 2mm.
8. device described in -7 according to claim 1, which is characterized in that the desulfurization oxidant layer (3) also includes other desulfurizing agents, excellent
Choosing, biological desulphurization agent.
9. device described in -8 according to claim 1, which is characterized in that the tank deck (2) is hard material or air film material；It is excellent
Choosing, the air film material is selected from PVC, PE, PVDF, EPDM or acrylic；Preferably, natural pond is additionally provided on the tank deck (2)
Gas collecting pipe (5)；Preferably, it is additionally provided with air pipeline (10) on the tank body (1), the air pipeline (10) and air pump
(14) it connects；Preferably, flowmeter (11), check-valves (13) and regulating valve (12) are provided on the air pipeline (10).
10. application of the device of claim 1-9 in biogas fermentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397176.5A CN109943472A (en) | 2017-12-21 | 2017-12-21 | A kind of biogas fermentation device and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397176.5A CN109943472A (en) | 2017-12-21 | 2017-12-21 | A kind of biogas fermentation device and its application |
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| CN109943472A true CN109943472A (en) | 2019-06-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5261114A (en) * | 1975-11-12 | 1977-05-20 | Jones & Laughlin Steel Corp | Desulfurization of metal iron melt |
| CN101318104A (en) * | 2008-07-18 | 2008-12-10 | 陈雷 | Biological oxidation filter material, filter material preparation and application of the same in odor treatment |
| CN201825951U (en) * | 2010-10-27 | 2011-05-11 | 泽尔曼生物能源技术（北京）有限公司 | Methane biological desulphurization device |
| CN106105467A (en) * | 2016-07-15 | 2016-11-16 | 山东胜伟园林科技有限公司 | A kind of desulfurated plaster combines the method for animal wastes improvement alkaline land soil |
| CN106520597A (en) * | 2016-10-18 | 2017-03-22 | 河南省奶牛生产性能测定中心 | Ecological activity deodorant and preparation method thereof |
-
2017
- 2017-12-21 CN CN201711397176.5A patent/CN109943472A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5261114A (en) * | 1975-11-12 | 1977-05-20 | Jones & Laughlin Steel Corp | Desulfurization of metal iron melt |
| CN101318104A (en) * | 2008-07-18 | 2008-12-10 | 陈雷 | Biological oxidation filter material, filter material preparation and application of the same in odor treatment |
| CN201825951U (en) * | 2010-10-27 | 2011-05-11 | 泽尔曼生物能源技术（北京）有限公司 | Methane biological desulphurization device |
| CN106105467A (en) * | 2016-07-15 | 2016-11-16 | 山东胜伟园林科技有限公司 | A kind of desulfurated plaster combines the method for animal wastes improvement alkaline land soil |
| CN106520597A (en) * | 2016-10-18 | 2017-03-22 | 河南省奶牛生产性能测定中心 | Ecological activity deodorant and preparation method thereof |
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