CN104745463A - Biogas production method by using solar heating - Google Patents

Biogas production method by using solar heating Download PDF

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Publication number
CN104745463A
CN104745463A CN201310726305.6A CN201310726305A CN104745463A CN 104745463 A CN104745463 A CN 104745463A CN 201310726305 A CN201310726305 A CN 201310726305A CN 104745463 A CN104745463 A CN 104745463A
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China
Prior art keywords
attemperater
methane
temperature
generating pit
solar collector
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CN201310726305.6A
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Chinese (zh)
Inventor
郝怀民
张同茂
罗贵川
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Priority to CN201310726305.6A priority Critical patent/CN104745463A/en
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/22Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/24Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M43/00Combinations of bioreactors or fermenters with other apparatus
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Zoology (AREA)
  • Genetics & Genomics (AREA)
  • Microbiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Biotechnology (AREA)
  • Biomedical Technology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Molecular Biology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention relates to a biogas production method by using solar heating. A solar heat collection system, a biogas pool circulating heating system and a control system are included. The solar heat collection system collects heat energy and heats the feed liquid in a biogas digester by an exchange tube; the method uses the control system for constant temperature control, and when the temperature of the biogas digester reaches a certain range, biogas can be produced. The invention solves the situation in Northern areas that the biogas pool reaches a low temperature in winter and can not produce yield.

Description

A kind of biogas production method utilizing solar heating
Art:
The present invention relates to a kind of biogas production method utilizing solar heating, be that solar thermal collection system heats water, hot water enters methane-generating pit hydronics, and methane-generating pit temperature reaches certain limit and produces biogas, and whole production process has Controlling System to control.
Background technology:
At present, methane-generating pit construction is mostly governmental support and tissue, part building biomass pool technology does not reach a standard, some basic general knowledge of biogas are also popularized, the supporting difference of methane-generating pit, pond hold factor of created gase low, discharging is difficult, comprehensive benefit is not high, particularly winter temperature reduces, and traditional methane tank will not aerogenesis or few aerogenesis.
Summary of the invention:
The object of the invention is winter climate cold, the low not aerogenesis of methane-generating pit temperature, combines solar energy heat collector and biogas fermentation device, designs the biogas production system of a set of novel solar heating.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of biogas production method of solar heating that utilizes is by solar thermal collection system, methane-generating pit hydronics and Controlling System composition, be that solar thermal collection system is gathered heat energy and heated feed liquid in methane-generating pit by heat transfer tube, utilize the biogas production method of solar heating to adopt Controlling System constant temperature to control;
Solar thermal collection system is made up of the attemperater of thermal insulation layer and plate solar collector outside, it has been mainly used to the energy cushioning and save plate solar collector on the same day, water inlet pipe and the rising pipe of plate solar collector are parallel with one another, the best mounted angle of plate solar collector 45 °, in the middle part of the side that the rising pipe of plate solar collector and water inlet pipe are connected to attemperater and the side bottom of attemperater, attemperater is above plate solar collector;
Methane-generating pit hydronics is heated by the heat transfer tube in methane-generating pit surrounding wall, or in methane-generating pit, directly put into heat transfer tube heat, a rising pipe above heat transfer tube is connected with the bottom of attemperater, a water inlet pipe below heat transfer tube is connected with the side of attemperater, and methane-generating pit hydronics is in the below of plate solar collector;
Medium in plate solar collector is heated to seethe with excitement and vaporizes, and vaporizing tube enters condensation in attemperater, releases heat post liquefaction by returning under action of gravity in plate solar collector;
Temperature inductor is provided with in methane-generating pit, methane-generating pit feed temperature is less than design temperature 25 DEG C, simultaneously, when the temperature difference of attemperater temperature and methane-generating pit feed temperature is greater than 3 DEG C, Controlling System opens heat exchange circulation pump automatically, heated by the feed liquid of heat transfer tube to methane-generating pit, when temperature in pond is more than or equal to design temperature 45 DEG C, heat exchange circulation pump cuts out automatically;
When attemperater water level is lower than setting height, electronic float valve is opened automatically, carries out moisturizing to water tank, and when cistern water level is higher than set(ting)value, electronic float valve cuts out automatically;
Winter, night, there's a sudden fall in temperature, and heat transfer tube continues heating methane tank feed liquid, and attemperater temperature declines, and utilizes the biogas first produced to install marsh gas stove additional and carry out boosting to water, makes system form circulation.
The advantage of present system is: utilize the energy-conserving and environment-protective of solar heating production of methane tank biogas, sustainable recycle, solves north of china in winter very cold, methane-generating pit temperature low not aerogenesis situation.
Accompanying drawing illustrates:
Fig. 1 is a kind of structure iron utilizing the embodiment of the biogas production method of solar heating.
In figure 1, attemperater; 2, plate solar collector; 3, Controlling System; 4, methane-generating pit hydronics.
Embodiment
A kind of biogas production method of solar heating that utilizes is by solar thermal collection system, methane-generating pit hydronics (4) and Controlling System (3) composition, be that solar thermal collection system is gathered heat energy and heated feed liquid in methane-generating pit by heat transfer tube, utilize the biogas production method of solar heating to adopt Controlling System (3) constant temperature to control;
Solar thermal collection system has the attemperater of thermal insulation layer (1) and plate solar collector (2) to form by outside, it has been mainly used to the energy cushioning and save plate solar collector on the same day (2), water inlet pipe and the rising pipe of plate solar collector (2) are parallel with one another, the best mounted angle of plate solar collector (2) 45 °, in the middle part of the side that the rising pipe of plate solar collector (2) and water inlet pipe are connected to attemperater (1) and the side bottom of attemperater (1), attemperater (1) is in the top of plate solar collector (2),
Methane-generating pit hydronics (4) is heated by the heat transfer tube in methane-generating pit surrounding wall, or in methane-generating pit, directly put into heat transfer tube heat, a rising pipe above heat transfer tube is connected with the bottom of attemperater (1), a water inlet pipe below heat transfer tube is connected with the side of attemperater (1), and methane-generating pit hydronics (4) is in the below of plate solar collector (2);
Medium in plate solar collector (2) is heated to seethe with excitement and vaporizes, and vaporizing tube enters attemperater (1) interior condensation, releases heat post liquefaction by returning in plate solar collector (2) under action of gravity;
Temperature inductor is provided with in methane-generating pit, methane-generating pit feed temperature is less than design temperature 25 DEG C, simultaneously, when the temperature difference of attemperater (1) temperature and methane-generating pit feed temperature is greater than 3 DEG C, Controlling System (3) opens heat exchange circulation pump automatically, heated by the feed liquid of heat transfer tube to methane-generating pit, when temperature in pond is more than or equal to design temperature 45 DEG C, heat exchange circulation pump cuts out automatically;
When attemperater (1) water level is lower than setting height, electronic float valve is opened automatically, carries out moisturizing to attemperater (1), and when attemperater (1) water level is higher than set(ting)value, electronic float valve cuts out automatically;
Winter, night, there's a sudden fall in temperature, and heat transfer tube continues heating methane tank feed liquid, and attemperater (1) temperature declines, and utilizes the biogas first produced to install marsh gas stove additional and carry out boosting to attemperater (1) water, makes system form circulation.

Claims (2)

1. one kind utilizes the biogas production method of solar heating, it is characterized in that: a kind of biogas production method of solar heating that utilizes is by solar thermal collection system, methane-generating pit hydronics (4) and Controlling System (3) composition, that solar thermal collection system is gathered heat energy and heated feed liquid in methane-generating pit by heat transfer tube, the biogas production method of solar heating is utilized to adopt Controlling System (3) constant temperature to control, solar thermal collection system has the attemperater of thermal insulation layer (1) and plate solar collector (2) to form by outside, it has been mainly used to the energy cushioning and save plate solar collector on the same day (2), water inlet pipe and the rising pipe of plate solar collector (2) are parallel with one another, the best mounted angle of plate solar collector (2) 45 °, in the middle part of the side that the rising pipe of plate solar collector (2) and water inlet pipe are connected to attemperater (1) and the side bottom of attemperater (1), attemperater (1) is in the top of plate solar collector (2), methane-generating pit hydronics (4) is heated by the heat transfer tube in methane-generating pit surrounding wall, or in methane-generating pit, directly put into heat transfer tube heat, a rising pipe above heat transfer tube is connected with the bottom of attemperater (1), a water inlet pipe below heat transfer tube is connected with the side of attemperater (1), methane-generating pit hydronics (4) is in the below of plate solar collector (2).
2. a kind of biogas production method utilizing solar heating according to claim 1, it is characterized in that: the medium in plate solar collector (2) is heated to seethe with excitement and vaporizes, vaporizing tube enters attemperater (1) interior condensation, release heat post liquefaction by returning in plate solar collector (2) under action of gravity, temperature inductor is provided with in methane-generating pit, methane-generating pit feed temperature is less than design temperature 25 DEG C, simultaneously, when the temperature difference of attemperater (1) temperature and methane-generating pit feed temperature is greater than 3 DEG C, Controlling System (3) opens heat exchange circulation pump automatically, heated by the feed liquid of heat transfer tube to methane-generating pit, when temperature in pond is more than or equal to design temperature 45 DEG C, heat exchange circulation pump cuts out automatically, when attemperater (1) water level is lower than setting height, electronic float valve is opened automatically, moisturizing is carried out to attemperater (1), when attemperater (1) water level is higher than set(ting)value, electronic float valve cuts out automatically, winter, night, there's a sudden fall in temperature, heat transfer tube continues heating methane tank feed liquid, attemperater (1) temperature declines, utilize the biogas first produced to install marsh gas stove additional and boosting is carried out to attemperater (1) water, system is made to form circulation.
CN201310726305.6A 2013-12-26 2013-12-26 Biogas production method by using solar heating Pending CN104745463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310726305.6A CN104745463A (en) 2013-12-26 2013-12-26 Biogas production method by using solar heating

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Application Number Priority Date Filing Date Title
CN201310726305.6A CN104745463A (en) 2013-12-26 2013-12-26 Biogas production method by using solar heating

Publications (1)

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CN104745463A true CN104745463A (en) 2015-07-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624488A (en) * 2017-03-15 2018-10-09 云南师范大学 A kind of solar biogas system
CN110317716A (en) * 2019-07-25 2019-10-11 曹国鑫 A kind of liquid methane-generating pit heating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624488A (en) * 2017-03-15 2018-10-09 云南师范大学 A kind of solar biogas system
CN110317716A (en) * 2019-07-25 2019-10-11 曹国鑫 A kind of liquid methane-generating pit heating system

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150701

WD01 Invention patent application deemed withdrawn after publication