CN101191116B - Combined marsh gas fermentation pool - Google Patents
Combined marsh gas fermentation pool Download PDFInfo
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- CN101191116B CN101191116B CN2006101049631A CN200610104963A CN101191116B CN 101191116 B CN101191116 B CN 101191116B CN 2006101049631 A CN2006101049631 A CN 2006101049631A CN 200610104963 A CN200610104963 A CN 200610104963A CN 101191116 B CN101191116 B CN 101191116B
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- marsh gas
- stack retting
- retting pond
- pond
- heat exchanger
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/24—Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/20—Heating; Cooling
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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 relates to a composite marsh gas fermenting tank for marsh gas fermentation. Marsh gas fermenting tanks in the prior art all need external power settings; heat generated by biomass during the process of aerobic fermentation is not utilized to improve fermenting temperature of the marsh gas fermenting tanks; moreover, pre-treatment mode of solid-liquid separation of raw materials is generally adopted, thereby input cost is also increased. The invention consists of a stack retting tank provided with a heat exchanger and an internal circulating marsh gas reactor, wherein, a heat absorbing plate is arranged inside the stack retting tank; a heat exchanger is arranged on a reflux pipe in the marsh gas reactor; a closed circulation loop is formed by the heat absorbing plate and a pipe of the heat exchanger; circulating liquids are filled in the circulation loop. Therefore, the whole structure and the whole process do not need any external power, simultaneously marsh gas solid raw materials are simultaneously pretreated by the stack retting tank during the process of stack retting, thereby the contradiction of feeding of the solid raw materials and slag tapping is solved and simultaneously the cost is reduced; the invention greatly improves marsh gas application conditions in low temperature areas.
Description
Technical field
The present invention relates to a kind of combined marsh gas fermentation pool of biogas fermentation, is a kind ofly can utilize multiple biomass to produce biogas as raw material specifically, has the combined marsh gas fermentation pool of automatic heat riser.
Background technology
The various biogas fermentation pool structures that had the application of decades and updated as the biomass marsh gas technology of the alternative energy.As cited various marsh gas reactors in the open source literature " biogas practical technique ".These marsh gas reactors are improving the life condition of anaerobic activated sludge, improve the methane gas producing rate and all have certain effect.Simultaneously, the method that improves the employing of methane-generating pit temperature in the existing mesophilic digestion biomass pool structure is exactly heating under the thermal source situation, and patent " 200510016826 " is mentioned to solar water heater to come methane-generating pit is heated.Also be mentioned to waste heat that Germany utilizes the generating water coolant in the document " biogas practical technique " and carry out heating to methane-generating pit, these heating techniques all need power set to circulate.Defective is exactly all not adopt a kind of device to utilize biomass to go to improve the temperature of methane-generating pit fermentation from the heat that is produced in the process of aerobic fermentation.
In addition, when utilizing farm crop or processing of farm products Litter, inevitably be exactly the contradiction of raw material pit entry fermentation and deslagging as the biogas raw material.Because farm crop or processing of farm products Litter have a large amount of solid slags mostly, if pit entry fermentation will bring the difficulty of methane-generating pit scarfing cinder.The general pretreatment mode that raw material is carried out solid-liquid separation that adopts of existing technology has increased the cost that drops into so again.
Summary of the invention
The object of the present invention is to provide a kind of combined marsh gas fermentation pool that utilizes biomass to go to improve the temperature of methane-generating pit fermentation from the heat that in the process of aerobic fermentation, produced.
For achieving the above object, the technical solution used in the present invention is:
A kind of combined marsh gas fermentation pool, its special character is: stack retting pond 1 and internal-circulation type marsh gas reactor 3 that described combined marsh gas fermentation pool is equipped with heat exchanger by inside constitute; In the described stack retting pond 1 absorber plate 2 is set; On the return line 8 in the described marsh gas reactor 3 heat exchanger 4 is set; The pipeline of absorber plate 2 and heat exchanger 4 constitutes the sealing and circulating pipeline, and circulating liquid is arranged in the circulation line.
Above-mentioned stack retting pond 1 has the inclined bottom structure, the bottommost setting in stack retting pond can flow into acidifying liquid after the fermentation in the stack retting pond discharge nozzle 6 of marsh gas reactor automatically, the opening for feed 7 of discharge nozzle is arranged on the return line 8 of marsh gas reactor, and its position is lower than 1 bottom, stack retting pond.
The above-mentioned discharge nozzle 6 that can automatically acidifying liquid after the fermentation in the stack retting pond be flowed into marsh gas reactor adopts siphon pipe.
Be provided with in the above-mentioned discharge nozzle 6 and prevent that a large amount of natural ponds liquid from flowing back to the reflux valve 9 in the stack retting pond.
Discharge port 11 settings of above-mentioned stack retting pond bottom discharge pipe can be blocked solid material and enter marsh gas reactor grid 5.
The above-mentioned absorber plate 2 in the stack retting pond is made of the certain distance that is provided with between many plates the serial or parallel connection of a plurality of plates.
In the absorber plate 2 in above-mentioned stack retting pond an auxiliary line 10 that links to each other with external pipeline is set, its pipeline is arranged with circulation line parallel, and interface can be communicated with other heating sources.
Above-mentioned heat exchanger plate 2 and the heat exchanger on the return line 4 adopt heat conduction good metal material.
The present invention is with respect to prior art, and its advantage is as follows:
1, the present invention removes to improve the automatic heat riser of the temperature of methane-generating pit fermentation by adopting a kind of biomass of utilizing from the heat that produced in the process of aerobic fermentation, thereby entire structure and process are without any need for exterior power.
2, the present invention is provided with a stack retting pond, and the biogas solid material has been carried out pre-treatment in stack retting, solved the charging of solid material and slag tap between contradiction, reduced cost simultaneously.
3, the present invention provides heat with auxiliary other type of heating, has guaranteed to guarantee under the situation that does not have the stack retting raw material the middle temperature operation of reactor.
Description of drawings
Fig. 1 is a combination biomass pool structure synoptic diagram of the present invention;
Fig. 2 is a thermocirculator structural representation of the present invention.
Reference numeral:
1-stack retting pond, 2-absorber plate, 3-internal recycle (IC) marsh gas reactor, 4-heat exchanger, 5-grid, 6-discharge nozzle, 7-opening for feed, 8-return line, 9-reflux valve, 10-auxiliary line;
Embodiment
Referring to Fig. 1, Fig. 1 is combination biomass pool structure synoptic diagram of the present invention; Combined marsh gas fermentation pool structure of the present invention is made up of a stack retting pond 1 and an internal recycle (IC) marsh gas reactor 3.The 1 pair of biogas solid material in stack retting pond has carried out pre-treatment in stack retting, solved the charging of solid material and slag tap between contradiction.These farm crop or processing of farm products Litter carry out aerobic fermentation in the stack retting pond, and the acid solution after the fermentation is re-used as the biogas raw material and enters into the marsh gas reactor aerogenesis, have realized solid-liquid separation and pre-treatment to solid material; Simultaneously, the natural pond liquid that marsh gas reactor is discharged flows to the stack retting pond to carry out providing with microorganism the moisture of solid material is additional, quickens it and decomposes.
The present invention is provided with a kind of heat absorption and heat-releasing device, be installed in respectively in the stack retting pond 1 of farm crop or processing of farm products Litter and in the internal-circulation type marsh gas reactor 3, utilize the stack retting heat production of farm crop or processing of farm products Litter, absorber plate 2 absorbs this heat, emits heat in marsh gas reactor 3 by the heat exchanger 4 that is installed on the internal-circulation type marsh gas reactor return line again.The sealing and circulating pipeline that heat absorption and heat-releasing device are made up of the heat exchanger of being installed on absorber plate in the stack retting pond and the return line in marsh gas reactor constitutes, and can be described as thermocirculator.Add certain liquid working material in that pipeline is inner, the heat that raw material produced when this device was absorbed in stack retting, and heat taken in the marsh gas reactor, by the heat exchanger in the reactor heat is passed to natural pond liquid by return line, realize automated cycle.
The present invention makes up biomass pool structure by stack retting pond 1, absorber plate 2, and internal recycle IC marsh gas reactor 3, heat exchanger 4, grid 5, discharge nozzle 6, opening for feed 7, return line 8, reflux valve 9, auxiliary line 10, discharge port 11 is formed.Stack retting pond 1 be one can stack farm crop or processing of farm products Litter one around utilize the rectangle of material insulation or the pond of other shapes, both can be all also can be on the ground below terrace.Must be to have natural inclined plane and the liquid in the pond can be pooled to the discharge port of opening in minimum place 7 at the bottom of its pond.Discharge port 7 must assurance can flow to marsh gas reactor 3 with acid solution after the fermentation in the stack retting pond.So, no matter be that the stack retting pond is based upon on the ground or below the terrace, the bottom in stack retting pond must be a little more than the opening for feed of marsh gas reactor.When building stack retting pond and methane-generating pit, the position of bottom is slightly approached at the middle part that just absorber plate 2 is installed in the stack retting pond.As shown in Figure 1, the installation perpendicular to the ground of the absorber plate in the stack retting pond, the heat that is produced to guarantee absorbing stack retting to greatest extent.Absorber plate 2 is set in stack retting pond 1; On the return line 8 in the described marsh gas reactor 3 heat exchanger 4 is set; The pipeline of absorber plate 2 and heat exchanger 4 constitutes the sealing and circulating pipeline, and circulating liquid is arranged in the circulation line, is beneficial to heat-shift.
Acidifying liquid flows into the discharge nozzle 6 of marsh gas reactor after the bottommost setting with inclined bottom structure stack retting pond 1 can be automatically with the fermentation in the stack retting pond, discharge nozzle 6 adopts siphon pipe, the opening for feed 7 of discharge nozzle is arranged on the return line 8 of marsh gas reactor, and its position is lower than 1 bottom, stack retting pond.
In discharge nozzle 6, be provided with and prevent that a large amount of natural ponds liquid from flowing back to the reflux valve 9 in the stack retting pond and can block solid material and enter marsh gas reactor grid 5.
Referring to Fig. 2, Fig. 2 is thermocirculator structural representation of the present invention; Do not having under farm crop or the situation of agricultural-food Litter as raw material, an auxiliary line 10 that links to each other with external pipeline is set in the absorber plate 2 in stack retting pond, its pipeline is arranged with circulation line parallel, and interface can be communicated with other heating source pipelines; Realize said function as linking to each other it with solar water heater or boiler hot-water pipeline or generator cooling-water pipeline to the marsh gas reactor heating.
During work, farm crop after will shredding earlier or processing of farm products Litter, (pomace such as after the processing of some type then can directly be filled out the pond without this procedure) adds after an amount of lime water mixes and inserts the stack retting pond, tamp appropriateness, but more than the necessary absorber plate upper limb 80cm that guarantees to cover in the stack retting pond.Add a cover insulation on the stack retting pond and insert several ventpipes, guarantee ventilation.Carry out the fermentation of startup formula with human and animal excreta as initial natural pond liquid in the marsh gas reactor.Can consider during winter to carry out primary heating with hot water.To accelerate fermenting process.Raw material just can be brought up to temperature inside more than 30 degree after in a few days in the stack retting pond, and thermocirculator is just started working, and at this moment, the heated liquid in the absorber plate in the stack retting pond flows to the interior heat exchanger of marsh gas reactor, and conducts heat to reactor.Realization is to the heating of marsh gas reactor.After the methane gas producing process begins, the rising power of part natural pond liquid dependence biogas backflows in the stack retting pond automatically, so both can quicken the pile fermentation of raw material in the stack retting pond, the temperature at stack retting center can be reached about 50 degree, can be washed into a part of acidizing fluid marsh gas reactor again and replenish aerogenesis as new natural pond liquid through pile fermentation; In the entire work process,, pre-treatment and solid-liquid separation have also been realized so simultaneously to solid materials such as farm crop or processing of farm products Litters owing to have stopping of grid 5, the solid part of most of raw material all to stay in the stack retting pond.
The present invention can select different the stack retting pond shape and the degree of depth according to different type of feed and place environment.This process can be looked the time length that how much decides heating and heat preservation of raw material.After treating the core temperature reduction of raw material pile fermentation, can add the time that new raw material is kept its heating and heat preservation.All solid slags are handled in once clear pond when by the time summer is without stack retting.
Work more than the liquid level of design in order to ensure the natural pond liquid in the marsh gas reactor, make a part of natural pond liquid can discharge marsh gas reactor automatically and also can play the effect of washing away acidizing fluid in the stack retting pond.The rising pipe position of marsh gas reactor will be higher than the bottom in stack retting pond.In order to reach this purpose, need in the actual debugging marsh gas reactor rising biogas its drive the amount and the elevation of natural pond liquid, simultaneously because return line mobile driven acidizing fluid in the stack retting pond to the automatic feed of return line.
In addition, the typical thing that indication farm crop of the present invention or agricultural-food Litter are general is that the pomace after stalk, green grass, the processing, the medicinal material slag after the processing etc. have solid form or thick highly filled material.When design stack retting pond, can accomplish both to have saved the feed parking space in conjunction with stacking and overall planning and designs such as other raw materials such as ight soil dried, green fodder, taken into account the digestion of solid material again.
Claims (5)
1. combined marsh gas fermentation pool is characterized in that: stack retting pond (1) and internal-circulation type marsh gas reactor (3) that described combined marsh gas fermentation pool is equipped with heat exchanger by inside constitute; Absorber plate (2) is set in the described stack retting pond (1); On the return line (8) in the described marsh gas reactor (3) heat exchanger (4) is set; The pipeline of absorber plate (2) and heat exchanger (4) constitutes the sealing and circulating pipeline, and circulating liquid is arranged in the circulation line; Described stack retting pond (1) has the inclined bottom structure, the bottommost setting in stack retting pond can flow into acidifying liquid after the fermentation in the stack retting pond discharge nozzle (6) of marsh gas reactor automatically, the opening for feed of discharge nozzle (7) is arranged on the return line (8) of marsh gas reactor, and its position is lower than bottom, stack retting pond (1).
2. a kind of combined marsh gas fermentation pool according to claim 1 is characterized in that: the described discharge nozzle (6) that can automatically acidifying liquid after the fermentation in the stack retting pond be flowed into marsh gas reactor adopts siphon pipe.
3. a kind of combined marsh gas fermentation pool according to claim 2 is characterized in that: be provided with in the described discharge nozzle (6) and prevent that a large amount of natural ponds liquid from flowing back to the reflux valve in the stack retting pond.
4. a kind of combined marsh gas fermentation pool according to claim 2 is characterized in that: the setting of the discharge port (11) of described stack retting pond bottom discharge pipe can be blocked solid material and enter marsh gas reactor grid (5).
5. a kind of combined marsh gas fermentation pool according to claim 2 is characterized in that: described absorber plate in the stack retting pond (2) is made of the certain distance that is provided with between many plates the serial or parallel connection of a plurality of plates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101049631A CN101191116B (en) | 2006-11-24 | 2006-11-24 | Combined marsh gas fermentation pool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101049631A CN101191116B (en) | 2006-11-24 | 2006-11-24 | Combined marsh gas fermentation pool |
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| CN101191116A CN101191116A (en) | 2008-06-04 |
| CN101191116B true CN101191116B (en) | 2011-11-30 |
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| CN102174379B (en) * | 2011-03-02 | 2013-09-18 | 环境保护部南京环境科学研究所 | Biogas generating pit for co-processing domestic garbage and human dejecta of rural scattered inhabitants |
| CN111875206B (en) * | 2020-08-13 | 2022-09-06 | 来宾市农业科学院 | Cow dung recycling system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200981870Y (en) * | 2006-11-24 | 2007-11-28 | 栾龙 | Combined marsh gas fermentation pool |
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| CN200981870Y (en) * | 2006-11-24 | 2007-11-28 | 栾龙 | Combined marsh gas fermentation pool |
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