CN202246675U - Device for electrolytically promoting anaerobic fermentation - Google Patents
Device for electrolytically promoting anaerobic fermentation Download PDFInfo
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- CN202246675U CN202246675U CN201120404048.0U CN201120404048U CN202246675U CN 202246675 U CN202246675 U CN 202246675U CN 201120404048 U CN201120404048 U CN 201120404048U CN 202246675 U CN202246675 U CN 202246675U
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- 238000000855 fermentation Methods 0.000 title claims abstract description 39
- 230000001737 promoting effect Effects 0.000 title abstract 5
- 230000004151 fermentation Effects 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000005868 electrolysis reaction Methods 0.000 claims description 22
- 238000013022 venting Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims description 3
- 229910003446 platinum oxide Inorganic materials 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 26
- 239000005416 organic matter Substances 0.000 abstract description 5
- 239000002341 toxic gas Substances 0.000 abstract description 4
- 239000010902 straw Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 13
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 241001074903 Methanobacteria Species 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012267 brine Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- 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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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/38—Caps; Covers; Plugs; Pouring means
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- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/20—Degassing; Venting; Bubble traps
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- C12M35/00—Means for application of stress for stimulating the growth of microorganisms or the generation of fermentation or metabolic products; Means for electroporation or cell fusion
- C12M35/02—Electrical or electromagnetic means, e.g. for electroporation or for cell fusion
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- C12M43/00—Combinations of bioreactors or fermenters with other apparatus
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Abstract
The utility model relates to a device for electrolytically promoting anaerobic fermentation, which belongs to the technical field of resources and environments. The device for electrolytically promoting the anaerobic fermentation mainly comprises a fermentation tank body 1, a tank seal 2 and a vent 7, wherein the tank seal 2 is located on the fermentation tank body 1 and is used for sealing the mouth of the tank body 1; and the tank seal 2 is perforated and the vent 7 is inserted into the tank seal 2. The device for electrolytically promoting the anaerobic fermentation is characterize by also comprising an anode 4, a cathode 5, a direct-current power supply 9 and two electric wires 8, wherein the direct-current power supply 9 is arranged outside the fermentation tank body 1, and the two electric wires 8 respectively pass through the tank seal 2 to extend into the tank body 1 and are respectively connected with the anode 4 and the cathode 5 in the tank body 1. In order to solve the problems that complicated organic matter, such as straws and the like, is hard to degrade and methane contains toxic gases, water is electrolyzed by the device for electrolytically promoting the anaerobic fermentation by adopting the low-pressure direct-current power supply to provide a required anaerobic microenvironment for degrading the straws and the like. H2S in the methane generates an oxidizing reaction on the anode, and further, the goal of desulfuration is achieved; and the generated methane can be directly burnt without being treated by a desulfurizer.
Description
Technical field
The utility model relates to a kind of electrolysis and promotes anaerobic ferment devices, belongs to the resource and environment technical field.
Background technology
Because energy demand increases day by day and the mass consumption of fossil oil, has caused the interest of people to renewable energy source.Methane is pollution-free, renewable, be a kind of desirable energy that can develop.Methane is produced in straw anaerobic digestion not only can alleviate energy pressure, can also solve stalk and directly burn the problem of environmental pollution that is brought, and has very high economic worth.The residing strictly anaerobic environment of biogas fermentation is unfavorable for complicated organic degradeds such as stalk, and the hydrogen sulfide that produces severe toxicity, has limited the direct utilization of biogas.
The anaerobically fermenting of biogas is divided into three phases: hydrolysis of organic matter, product acid, product methane phase.And the hydrolysis of organic matter process, it is actually a little aerobic process, and the strictly anaerobic condition of product methane phase is unfavorable for organic hydrolysis.Feeding certain impressed voltage can produce oxygen and hydrogen continuously; Oxygen provides little aerobic environment, promotes organic hydrolysis in the stalk, reduces the content of hydrogen sulfide in the biogas; The hydrogen that electrolysis produces partly spills in the biogas, can improve the combustionproperty of biogas, and another part hydrogen can be converted to methane by the hydrogen nutritional type methanobacteria in the fermentation system, improves the productive rate of methane.
The utility model content
One of technical purpose of the utility model is to provide a kind of electrolysis to promote the device of anaerobically fermenting; Make this device to be controlled at minimum level through oxygen content in the big young pathbreaker's biogas of control impressed voltage; It relates generally to complicated organic matter degradation difficulties such as solving stalk and biogas contains the technical problem of toxic gas (mainly being hydrogen sulfide), and can utilize the low-voltage dc power supply brine electrolysis that the required little aerobic environments of degraded such as stalk are provided.
In order to realize the technical purpose of the utility model, the technical scheme of the utility model is following.
A kind of electrolysis promotes anaerobic ferment devices; Mainly by fermentation tank body 1, be positioned at the envelope jar mouth 2 that is used to seal its jar mouth on the fermentation tank body 1; And, it is characterized in that also comprising anode 4, negative electrode 5, direct supply 9 and electric wire 8 sealing venting port 7 formations that perforate is also inserted on jar mouth 2; Direct supply 9 is arranged on outside the fermentation tank body 1, passes envelope jar mouth 2 respectively through two wires 8 and stretches into tank body 1 inside and connect anode 4 and the negative electrode 5 that is arranged on tank body 1 inside respectively.
Further, described male or female is a pellet electrode.
Further, described anode is interpreted as the anode that any inert material makes in the prior art, in the utility model, includes but not limited to: graphite, platinum or metal oxide containing precious metals.
Described negative electrode is interpreted as the negative electrode that any electro-conductive material makes in the prior art, in the utility model, includes but not limited to: copper, stainless steel, aluminium, silver or titanium.
Further, described electrolysis promotes the device of anaerobically fermenting also to comprise material taking mouth 3, and material taking mouth 3 is that the one of which end inserts the bottom of fermentation tank body 1 through the conduit of envelope jar mouth 2, and an end stretches out envelope jar mouth 2.Its objective is to make things convenient in the device operating process and at any time the feed liquid of fermentation system is carried out sampling analysis.
Further, also be connected with threeway on the described venting port 7, threeway one end is connected with venting port 7, and an end plug is gone into sealing plug 6, and the other end connects the tolerance proofing unit.An end that is plugged with sealing plug 6 can make things convenient for the gas that at any time fermentation system is produced to carry out sampling analysis as air hatch.The purpose that connects the tolerance proofing unit is total gas production rate after each batch of detection fermentation ends, to detect the gas deliverability of fermentation system.
The technique effect of the utility model is:
(1) this anaerobic digestion device is made simply, and cost is low, is applicable to the research of electrolysis to the anaerobically fermenting influence.
(2) in order to solve the problem that complicated organic matter degradation difficulty such as stalk and biogas contain toxic gas (mainly being hydrogen sulfide), the utility model utilizes the low-voltage dc power supply brine electrolysis that the required little aerobic environments of degraded such as stalk are provided.For fear of the restraining effect of oxygen to anaerobic metabolism, the impressed voltage that the utility model provides can be controlled at minimum level with oxygen content.The hydrogen that electrolysis produced can be by hydrogen nutritional type methanobacteria metabolism utilization, thereby has improved the content of methane in the biogas.H in the biogas
2S is in anode generation oxidizing reaction, and then reaches the purpose of desulfurization, and the biogas that is produced need not can directly burn through desulfurizer.
Description of drawings
Fig. 1 is the structural representation that the said electrolysis of the utility model promotes the device of anaerobically fermenting.
Wherein, 1-fermentation tank body; 2-envelope jar mouth; The 3-material taking mouth; The 4-anode; The 5-negative electrode; The 6-sealing plug; The 7-venting port; The 8-electric wire; The 9-direct supply.
Fig. 2 is embodiment 2 daily gas quantitative change data plots.
Fig. 3 is the methane content delta data figure of output gas among the embodiment 2.
Fig. 4 is embodiment 2 cumulative gas production delta data figure.
Embodiment
The structure of present embodiment explanation the utility model described electrolysis promotion device of anaerobically fermenting.
As shown in Figure 1, the described electrolysis of the utility model promotes the device of anaerobically fermenting, mainly by fermentation tank body 1, be positioned at the envelope jar mouth 2 that is used to seal its jar mouth on the fermentation tank body 1, and perforate and the venting port 7 that inserts constitute on envelope jar mouthfuls 2; This device also comprises anode 4, negative electrode 5, direct supply 9 and electric wire 8; Direct supply 9 is arranged on outside the fermentation tank body 1, passes envelope jar mouth 2 respectively through two wires 8 and stretches into tank body 1 inside and connect anode 4 and the negative electrode 5 that is arranged on tank body 1 inside respectively.
Further, described male or female is a pellet electrode.
Further, described anode is interpreted as the anode that any inert material makes in the prior art, in the utility model, includes but not limited to: graphite, platinum or metal oxide containing precious metals etc.
Described negative electrode is interpreted as the negative electrode that any electro-conductive material makes in the prior art, in the utility model, includes but not limited to: copper, stainless steel, aluminium, silver or titanium etc.
Further, described electrolysis promotes the device of anaerobically fermenting also to comprise material taking mouth 3, and material taking mouth 3 is that the one of which end inserts the bottom of fermentation tank body 1 through the conduit of envelope jar mouth 2, and an end stretches out envelope jar mouth 2.Its objective is to make things convenient in the device operating process and at any time the feed liquid of fermentation system is carried out sampling analysis.
Further, also be connected with threeway on the described venting port 7, threeway one end is connected with venting port 7, and an end plug is gone into sealing plug 6, and the other end connects the tolerance proofing unit.An end that is plugged with sealing plug 6 can make things convenient for the gas that at any time fermentation system is produced to carry out sampling analysis as air hatch.The purpose that connects the tolerance proofing unit is total gas production rate after each batch of detection fermentation ends, to detect the gas deliverability of fermentation system.
Present embodiment is a method of utilizing embodiment 1 described device producing methane through anaerobic fermentation.
(1) gets the fermentation tank body of 1 L, open the envelope jar mouth 2 that electrolysis promotes the device of anaerobically fermenting, in its fermentation tank body 1, add 30 g and pulverize to filamentous stalk and 770 mL natural pond liquid and make that solid masses content is 6%; Install envelope jar mouth 2 and venting port 7, anode 4, negative electrode 5, direct supply 9 and electric wire 8; With graphite is that anode, copper are negative electrode, and electrode distance is 3 cm.
(2) open direct supply 9, keep impressed voltage 2.5 V, guarantee oxygen content, promptly do not influence the activity of methanobacteria, again little aerobic environment can be provided below 1%; Fermentation unit is placed the water-bath device, make leavening temperature maintain 37 ℃, begin fermentation gas, and collect biogas and detect gas production rate through venting port 7.Fermenting, gas production rate obviously reduces after 11 days, stops fermentation this moment.
With same fermentation condition but the simple anaerobically fermenting of non-additional electrodes and voltage as one group of contrast, measure daily output tolerance (Fig. 2), methane content changes (Fig. 3), cumulative gas (Fig. 4) and hydrogen sulfide content.Hydrogen sulfide content adopts GB/T 11060.1-1998 method to measure, and the result is 0%, and control group is 0.203%.The result shows, adds low-voltage dc power supply and not only can promote biogas fermentation, improves the biogas performance, can also remove toxic gas hydrogen sulfide etc. in the biogas.
Claims (6)
1. an electrolysis promotes the device of anaerobically fermenting; Mainly by fermentation tank body (1), be positioned at the envelope jar mouth (2) that is used to seal its jar mouth on fermentation tank body (1); And, it is characterized in that also comprising anode (4), negative electrode (5), direct supply (9) and electric wire (8) in venting port (7) formation that envelope jar mouthful (2) is gone up perforate and inserted; Direct supply (9) is arranged on outside the fermentation tank body (1), passes envelope jar mouthful (2) respectively through two wires (8) and stretches into tank body (1) inside and connect anode (4) and the negative electrode (5) that is arranged on tank body (1) inside respectively.
2. electrolysis according to claim 1 promotes the device of anaerobically fermenting, it is characterized in that described male or female is a pellet electrode.
3. electrolysis according to claim 1 promotes the device of anaerobically fermenting, it is characterized in that described anode is graphite, platinum or metal oxide containing precious metals.
4. electrolysis according to claim 1 promotes the device of anaerobically fermenting, it is characterized in that described negative electrode is copper, stainless steel, aluminium, silver or titanium.
5. electrolysis according to claim 1 promotes the device of anaerobically fermenting; It is characterized in that described electrolysis promotes the device of anaerobically fermenting also to comprise material taking mouth (3); Material taking mouth (3) is the conduit through envelope jar mouthful (2); The one of which end inserts the bottom of fermentation tank body (1), and an end stretches out envelope jar mouthful (2).
6. electrolysis according to claim 1 promotes the device of anaerobically fermenting, it is characterized in that also being connected with threeway on the described venting port (7), and threeway one end is connected with venting port (7), and an end plug is gone into sealing plug (6), and the other end connects the tolerance proofing unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120404048.0U CN202246675U (en) | 2011-10-21 | 2011-10-21 | Device for electrolytically promoting anaerobic fermentation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120404048.0U CN202246675U (en) | 2011-10-21 | 2011-10-21 | Device for electrolytically promoting anaerobic fermentation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555566A (en) * | 2013-11-14 | 2014-02-05 | 大连理工大学 | Novel external electrolysis device for promoting anaerobic digestion to produce methane |
| CN110343610A (en) * | 2019-08-16 | 2019-10-18 | 贵州大学 | A kind of laboratory liquid installation for fermenting of real-time detection hydrogen sulfide |
-
2011
- 2011-10-21 CN CN201120404048.0U patent/CN202246675U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555566A (en) * | 2013-11-14 | 2014-02-05 | 大连理工大学 | Novel external electrolysis device for promoting anaerobic digestion to produce methane |
| CN103555566B (en) * | 2013-11-14 | 2015-07-22 | 大连理工大学 | Novel external electrolysis device for promoting anaerobic digestion to produce methane |
| CN110343610A (en) * | 2019-08-16 | 2019-10-18 | 贵州大学 | A kind of laboratory liquid installation for fermenting of real-time detection hydrogen sulfide |
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