CN107400630A - A kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system - Google Patents
A kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system Download PDFInfo
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- CN107400630A CN107400630A CN201710784391.4A CN201710784391A CN107400630A CN 107400630 A CN107400630 A CN 107400630A CN 201710784391 A CN201710784391 A CN 201710784391A CN 107400630 A CN107400630 A CN 107400630A
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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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- 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
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- 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
A kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system are by anaerobic fermentation pond, heat pump/pump assembly and biogas residue-biogas liquid pool three parts are formed, low level heat energy is used as using biogas residue and biogas liquid, heat-conducting medium is transferred heat to by concrete embedded coil pipe integrated radiation end, after heat-conducting medium is compacted into high temperature and high pressure gas via source pump, heat is discharged to fermentation vat by concrete embedded coil pipe integrated radiation end again, it ensure that the temperature needed for bio anaerobic fermentation, when fermentation vat temperature is higher, when directly can meet fermentation temperature requirement with fluorine pump circulation, close source pump.The present invention takes into full account the characteristics of zymotic fluid viscosity is high, replaces traditional heating coil with concrete embedded coil pipe integrated radiation end, effectively prevent traditional heating coil pipe and the problem of fouling is so as to cause heat exchange efficiency sharp-decay easily occur, simple in construction；It is simultaneously that anaerobic fermentation pond heats using biogas residue and biogas liquid waste heat by direct-expansion type heat pump, it is energy-efficient.
Description
Technical field
The present invention relates to a kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, is specifically a kind of pre- based on concrete
The direct-expansion type heat pump of coil pipe integrated radiation end is buried, is that biogas anaerobic fermentation pond heats using biogas residue and biogas liquid waste heat.
Background technology
As the whole world largely uses the fossil energy such as coal, oil institute produced problem, include the finiteness and ring of resource
Border problem, many countries are paid attention to biomass energy as the important energy；And one kind that biogas is commonly used as China rural area
Biomass energy, it is the effective behave for solving rural energy supply problem under energy shortage situation that it, which is developed, and it develops day
Benefit is paid attention to by country.
The production of biogas and temperature are closely related, and biogas fermentation has three kinds of cold fermentation, mesophilic digestion and hot fermentation moulds
Formula, cold fermentation efficiency is low, and hot fermentation is not easy to reach due to requiring that temperature is higher 50-60 DEG C, in practical operation, therefore greatly
Most biogas engineerings use mesophilic digestion pattern, and it is 35 DEG C to control fermentation vat temperature；In cold season, due to environment temperature mistake
Low, the activity reduction of fermentative microorganism, methane tank gas production amount is seldom, not even aerogenesis, and seriously constrain biogas makes in rural area
With and promote.
Open source literature on biogas anaerobic fermentation pond heating hand-held high yield gas is as follows；
A kind of existing disclosed " HVAC system, methane-generating pit and the method heated for methane-generating pit " (application number 201210275912.
0；The A of Publication No. CN 102851202, devise a kind of method heated using HVAC system for methane-generating pit, HVAC system bag
Earth source heat pump is included, earth source heat pump end is connected with methane-generating pit, warming plate pipe, pool wall winding capillary are set in methane-generating pit bottom,
Heat is conveyed to methane-generating pit by end, methane-generating pit is embodied as and heats.
A kind of existing disclosed " air energy heat pump marsh gas tank " patent of invention, devise one kind is using air energy heat pump
Methane-generating pit heats structure, the heat in energy conduction Absorption of Medium environment in air energy heat pump, liquid is converted into by gaseous state at it
Water is transferred heat to during state, water heats anaerobic fermentation pond by circulation pipe and promotes anaerobic fermentation.
Existing disclosed " system and control method of a kind of land used source/air source heat pump approach warming methane tank ", design
A kind of heat energy made full use of in soil heat energy and air is the method that methane-generating pit heats, earth source heat pump, air source heat pump
Both it can be used alone, can also be used in combination, and unit operation was controlled with temperature sensor, the system and method is applied to medium
Scale biogas engineering.
Existing disclosed a kind of " the one heat pump united heating system of solar energy of constant temperature fermentation methane tank ", devises one kind too
The one heat pump united heating of positive energy, acidification pool, waste liquid pool and water tank joint heat accumulation, the ferment at constant temperature system of phase-change material module insulation
System, small volume, the thermal efficiency are high.
Document disclosed above proposes the heating system heated for biogas anaerobic fermentation pond and device from different perspectives, so
And when not considering to heat to fermentation vat the problem of fouling easy using heating coil, in fact due to zymotic fluid viscosity
Height, heating coil are either located at fermentation vat bottom of pond also or are wrapped in pool wall, using can all be tied after a period of time on its surface
Dirt so that heat transfer efficiency sharp-decay, in addition biogas engineering can all discharge substantial amounts of biogas residue and biogas liquid, the biogas residue and biogas liquid of discharge daily
Temperature about at 35 DEG C or so, is sufficiently close to temperature needed for biogas anaerobic fermentation, and UTILIZATION OF VESIDUAL HEAT IN has a high potential.
The content of the invention
The invention solves particular problem be：Asked by heat exchange efficiency sharp-decay caused by heating coil fouling
Topic；Biogas residue and biogas liquid waste heat efficiently utilizes topic；Therefore, the present invention provides a kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and heats and be
System.
A kind of above-mentioned biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and the technical scheme of temperature-increasing system are as follows.
A kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, including anaerobic fermentation pond part, heat pump/pump assembly portion
Divide, biogas residue-biogas liquid pool part three parts are formed, it is characterised in that：
Anaerobic fermentation pond part includes the concrete embedded coil pipe integrated radiation end being located in the pond body of anaerobic fermentation pond
Ⅰ；The heat pump/pump assembly part includes heat pump compressor, expansion valve and fluorine pump；The biogas residue-biogas liquid pool part includes being located at
Concrete embedded coil pipe integrated radiation end II in biogas residue-biogas liquid pool pond body；
The entrance of radiation tail end II in the biogas residue-biogas liquid pool pond body with the pond body of the anaerobic fermentation pond described in
Radiation tail end I is connected between exporting with two loops, one be followed successively by radiation tail end I export, expansion valve and radiation tail end II
Entrance；Another be followed successively by radiation tail end I export, fluorine pump, valve I and the entrance of radiation tail end II；
The outlet of radiation tail end II in the biogas residue-biogas liquid pool pond body and the radiation tail end I in the pond body of anaerobic fermentation pond
Be connected between entrance with two loops, one be followed successively by radiation tail end II export, heat pump compressor, the entrance of radiation tail end I；Separately
One be followed successively by radiation tail end II export, valve II and the entrance of radiation tail end I.
Further technical scheme is as follows.
The radiation tail end I is to pour to form together with pond body concrete with radiation tail end II.
The temperature-increasing system is to be heated by direct-expansion type heat pump using biogas residue and biogas liquid waste heat for anaerobic fermentation pond.
Temperature sensor is provided with the anaerobic fermentation pond, the temperature sensor is by the anaerobic fermentation pond measured in real time
Temperature input to controller, the on off state of controller control valve door I, valve II and fluorine pump, control compressor and expansion valve
Working condition.
The anaerobic fermentation bottom of pond portion, pond body surrounding and top carry out isothermal holding.
A kind of above-mentioned biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, compared with prior art, there are following features：
The radiation tail end heat exchange that the system pours together with pond body concrete, is changed after effectively prevent traditional heating coil fouling
The problem of thermal efficiency sharp-decay, it ensure that heat exchange efficiency, the temperature in fermentation vat is more uniform and stable.
The system makes full use of biogas residue and biogas liquid waste heat, temperature stabilization and heat abundance, reduces the energy heated for fermentation vat
Source consumes, and is not influenceed by season, stable performance.
The system is provided with three kinds of heating modes, and automatic control is carried out according to the temperature in anaerobic fermentation pond, is ensureing to send out in pond
Low power consuming is realized needed for ferment while temperature.
The system does not need fuel, and environment will not be polluted, it is not required that complicated equipment, simple process, is easy to
Promote.
Brief description of the drawings
Fig. 1 is the structural representation of the system.
Fig. 2 is the concrete embedded coil pipe integrated radiation end flat cutting structural representation of pond body in the system.
Fig. 3 is the concrete embedded coil pipe integrated radiation end cross-sectional view of pond body in the system.
In figure：1：Anaerobic fermentation pond；2：Heat pump compressor；3：Expansion valve；4：Fluorine pump；5：Biogas residue-biogas liquid pool；6：Radiation end
End I；7：Radiation tail end II；8：Valve I；9：Valve II；10：Temperature sensor；11：Controller.
Embodiment
The embodiment of the present invention is further illustrated below.
A kind of above-mentioned the provided biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN of the present invention and temperature-increasing system are provided, are mainly into one
Step is overcome because biogas slurry viscosity is high, the fouling that heating coil occurs in use for some time, causes heat exchange efficiency sharp-decay
The problem of, and the problem of biogas residue and biogas liquid waste heat efficiently utilizes.Concrete embedded coil pipe integrated radiation is used for this present invention
The direct-expansion type heat pump of end, i.e., traditional heating coil is replaced with concrete embedded coil pipe integrated radiation end；Simultaneously
It is that anaerobic fermentation pond heats using heat pump techniques, as long as the system includes anaerobic fermentation pond using biogas residue and biogas liquid as low level heat energy
Partly, three parts are formed altogether for heat pump/pump assembly, biogas residue-biogas liquid pool part, wherein, anaerobic fermentation pond part includes sending out positioned at anaerobism
Concrete embedded coil pipe integrated radiation end 6 in the pond body of ferment pond 1, heat pump/pump assembly include heat pump compressor 2, expansion valve 3
And fluorine pump 4, biogas residue-biogas liquid pool part include the concrete embedded coil pipe integrated radiation end being located in the pond body of biogas residue-biogas liquid pool 5
End 7.
The entrance of radiation tail end 7 in the pond body of biogas residue-biogas liquid pool 5 and the radiation tail end in the pond body of anaerobic fermentation pond 1
6 outlet between be connected with two loops, one be followed successively by radiation tail end 6 export, expansion valve 3, the entrance of radiation tail end 7, another
Be followed successively by radiation tail end 6 export, fluorine pump 4, valve 8, the entrance of radiation tail end 7.
The outlet of radiation tail end 7 in the pond body of biogas residue-biogas liquid pool 5 and the radiation tail end in the pond body of anaerobic fermentation pond 1
Be connected between 6 entrances with two loops, one be followed successively by radiation tail end 7 export, compressor 2, the entrance of radiation tail end 6, another
Be followed successively by radiation tail end 7 export, valve 9, the entrance of radiation tail end 6.
A kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN of above-mentioned implementation and temperature-increasing system, share three kinds of heating modes, according to detesting
Temperature in aerobe fermentation pond 1 carries out automatic control：
Do not heat：When the temperature sensor 10 in anaerobic fermentation pond 1 detects that temperature is more than or equal to 33 DEG C in pond, controller
11 actions, control valve 8, valve 9 and fluorine pump 4 are closed mode, and compressor 2, expansion valve 3 are stop working state.Detest
Do not heat in aerobe fermentation pond 1.
Common heating：When the temperature sensor 10 in anaerobic fermentation pond 1 detects that temperature is less than 33 DEG C in pond, controller
11 actions, control valve 8, valve 9 and fluorine pump 4 are opening, and compressor 2, expansion valve 3 are stop working state.This
When, fluorine pump work.Heat-conducting medium gasifies after absorbing biogas residue and biogas liquid waste heat in the radiation tail end 7 in biogas residue-biogas liquid pool 5, passes through
The place pipeline of valve 9 reaches the radiation tail end 6 being located in anaerobic fermentation pond 1, by fluorine pump 4 after the exothermic condensation of radiation tail end 6
It is returned in biogas residue-biogas liquid pool 5, is circulated with this and be embodied as fermentation vat and heat.
Heat pump：After a period of time is heated with common heating pattern, detect in anaerobic fermentation pond 1 temperature still less than
At 33 DEG C, controller 11 acts, and control valve 8, valve 9 and fluorine pump 4 are closed mode, and compressor 2, expansion valve 3 are work
Make state.Now, heat pump works.Biogas residue and biogas liquid waste heat is passed to heat-conducting medium by radiation tail end 7, and heat-conducting medium is via heat pump pressure
After contracting machine 2 is compacted into high temperature and high pressure gas, then by radiation tail end 6 heat is discharged to fermentation vat, then expanded valve 3
Return in biogas residue-biogas liquid pool 5, circulated with this and quick be embodied as fermentation vat and heat.
Implement above-mentioned technical proposal, efficiently avoid asking for heat exchange efficiency sharp-decay after traditional heating coil fouling
Topic, ensure that heat exchange efficiency, and compared with traditional heating coil pipe, more uniform temperature is stable in fermentation vat；
Automatic control is carried out according to the temperature in anaerobic fermentation pond 1 simultaneously, is realized while temperature needed for fermentation in pond is ensured low
Power consumption；Other the system does not need fuel, environment will not be polluted, it is not required that complicated equipment, simple process, be easy to
Promote.
The embodiment of the present invention is further illustrated below in conjunction with accompanying drawing, example is served only for explaining
The present invention, it is not intended to limit the scope of the present invention.
As shown in drawings, a kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system mainly by anaerobic fermentation pond part,
Three parts are formed altogether for heat pump/pump assembly part, biogas residue-biogas liquid pool part.
Anaerobic fermentation pond therein part includes the concrete embedded coil pipe integration spoke being located in the pond body of anaerobic fermentation pond 1
End 6 is penetrated, the heat pump/pump assembly includes heat pump compressor 2, expansion valve 3 and fluorine pump 4, the biogas residue-biogas liquid pool part bag
Include the concrete embedded coil pipe integrated radiation end 7 in the pond body of biogas residue-biogas liquid pool 5.
Radiation tail end 7 entrance therein being located in the pond body of biogas residue-biogas liquid pool 5 and the spoke in the pond body of anaerobic fermentation pond 1
Penetrate end 6 export between be connected with two loops, one be followed successively by radiation tail end 6 export, expansion valve 3, the entrance of radiation tail end 7,
Another be followed successively by radiation tail end 6 export, fluorine pump 4, valve 8, the entrance of radiation tail end 7.
Radiation tail end 7 outlet therein being located in the pond body of biogas residue-biogas liquid pool 5 and the spoke in the pond body of anaerobic fermentation pond 1
Penetrate between the entrance of end 6 and be connected with two loops, one be followed successively by radiation tail end 7 export, compressor 2, the entrance of radiation tail end 6,
Another be followed successively by radiation tail end 7 export, valve 9, the entrance of radiation tail end 6.
Temperature sensor 10, the anaerobic fermentation that temperature sensor 10 will measure in real time are provided with anaerobic fermentation pond 1 therein
Temperature in pond 1 is inputted to controller 11, the control valve 8 of controller 11, valve 9, the on off state of fluorine pump 4 and compressor 2,
The working condition of expansion valve 3.
When it is implemented, the radiation tail end pours together with pond body concrete.Described two concrete embedded coil pipes one
Body radiation tail end each acts as condenser, evaporator, as direct-expansion type system, nothing together with anaerobic fermentation pond, biogas residue-biogas liquid pool
Condenser and evaporator need to be set again.Further, anaerobic fermentation bottom of pond portion, pond body surrounding and top carry out isothermal holding.
Claims (5)
1. a kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, including anaerobic fermentation pond part, heat pump/pump assembly portion
Divide, biogas residue-biogas liquid pool part three parts are formed, it is characterised in that：
Anaerobic fermentation pond part includes being located at anaerobic fermentation pond（1）Concrete embedded coil pipe integrated radiation end in pond body
End I（6）；The heat pump/pump assembly part includes heat pump compressor（2）, expansion valve（3）And fluorine pump（4）；The biogas residue and biogas liquid
Pond part includes being located at biogas residue-biogas liquid pool（5）Concrete embedded coil pipe integrated radiation end II in pond body（7）；
Positioned at the biogas residue-biogas liquid pool（5）Radiation tail end II in pond body（7）Entrance is with being located at the anaerobic fermentation pond（1）Pond body
In the radiation tail end I（6）It is connected between outlet with two loops, one is followed successively by radiation tail end I（6）Outlet, expansion
Valve（3）With radiation tail end II（7）Entrance；Another is followed successively by radiation tail end I（6）Outlet, fluorine pump（4）, valve I（8）And radiation
End II（7）Entrance；
Positioned at the biogas residue-biogas liquid pool（5）Radiation tail end II in pond body（7）Outlet is with being located at anaerobic fermentation pond（1）In pond body
Radiation tail end I（6）It is connected between entrance with two loops, one is followed successively by radiation tail end II（7）Outlet, heat pump compressor
（2）, radiation tail end I（6）Entrance；Another is followed successively by radiation tail end II（7）Outlet, valve II（9）With radiation tail end I（6）Enter
Mouthful.
2. biogas anaerobic fermentation pond according to claim 1 UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, it is characterised in that：The radiation
End I（6）With radiation tail end II（7）It is to pour to form together with pond body concrete.
3. biogas anaerobic fermentation pond according to claim 1 UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, it is characterised in that：It is described to heat
System is to be heated by direct-expansion type heat pump using biogas residue and biogas liquid waste heat for anaerobic fermentation pond.
4. biogas anaerobic fermentation pond according to claim 1 UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, it is characterised in that：The anaerobism
Fermentation vat（1）In be provided with temperature sensor（10）, the temperature sensor（10）The anaerobic fermentation pond that will be measured in real time（1）Interior
Temperature is inputted to controller（11）, controller（11）Control valve I（8）, valve II（9）With fluorine pump（4）On off state, control
Compressor（2）And expansion valve（3）Working condition.
5. biogas anaerobic fermentation pond according to claim 1 UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system, it is characterised in that：The anaerobism
Fermentation vat（1）Bottom, pond body surrounding and top carry out isothermal holding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710784391.4A CN107400630A (en) | 2017-09-04 | 2017-09-04 | A kind of biogas anaerobic fermentation pond UTILIZATION OF VESIDUAL HEAT IN and temperature-increasing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111018285A (en) * | 2019-12-23 | 2020-04-17 | 河北迈金农业科技开发有限公司 | Process for preparing biogas by anaerobic digestion of human and animal excreta |
| CN113998780A (en) * | 2021-11-26 | 2022-02-01 | 广东广垦畜牧工程研究院有限公司 | Heating device for anaerobic methane tank and use method thereof |
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| CN202350388U (en) * | 2011-10-27 | 2012-07-25 | 同济大学 | Composite low-grade heat source heat pump heating system used in two-stage anaerobic fermentation process |
| CN103304123A (en) * | 2013-07-04 | 2013-09-18 | 哈尔滨瀚科环境工程设计研究院有限公司 | Heat energy recycling device for producing biogas by waste heat and operating mode thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005034041A (en) * | 2003-07-14 | 2005-02-10 | Keisuke Kasahara | Method for producing methane gas and fermentation product by combined use of anaerobic bacterium methane gas fermentation and aerobic bacterium fermentation and apparatus therefor |
| CN1844760A (en) * | 2006-04-24 | 2006-10-11 | 宋志宏 | Geothermal radiation heating system |
| CN202350388U (en) * | 2011-10-27 | 2012-07-25 | 同济大学 | Composite low-grade heat source heat pump heating system used in two-stage anaerobic fermentation process |
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| CN111018285A (en) * | 2019-12-23 | 2020-04-17 | 河北迈金农业科技开发有限公司 | Process for preparing biogas by anaerobic digestion of human and animal excreta |
| CN113998780A (en) * | 2021-11-26 | 2022-02-01 | 广东广垦畜牧工程研究院有限公司 | Heating device for anaerobic methane tank and use method thereof |
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