CN203474609U - Heat energy reutilization device for producing biogas by residual heat - Google Patents

Heat energy reutilization device for producing biogas by residual heat Download PDF

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Publication number
CN203474609U
CN203474609U CN201320394447.2U CN201320394447U CN203474609U CN 203474609 U CN203474609 U CN 203474609U CN 201320394447 U CN201320394447 U CN 201320394447U CN 203474609 U CN203474609 U CN 203474609U
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biogas
fermentation tank
hot water
holder
raw materials
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于志滨
梁玉文
曹毅
王明伟
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HARBIN HANKE ENVIRONMENTAL ENGINEERING DESIGN INSTITUTE Co Ltd
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HARBIN HANKE ENVIRONMENTAL ENGINEERING DESIGN INSTITUTE Co Ltd
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    • 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
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/20Sludge processing

Abstract

The utility model belongs to the technical field of environment protection and energy conservation and particularly relates to a heat energy reutilization device for producing biogas by residual heat of biogas residues and biogas slurry. In northern severe cold areas, the air temperature is low in winter and is -20 to -30 DEG C, the temperature of animal excrement (namely biogas raw materials) of a domestic animal farm is commonly 2 DEG C, and the excrement needs to be heated to 35 DEG C before entering an anaerobic fermentation tank to be fermented and decomposed to generate biogas; currently, hot water (or steam) generated by a hot water boiler (or a steam boiler) is used for heating and a lot of hot energy needs to be consumed. According to the heat energy reutilization device, based on the principle that as a temperature difference exists between high-temperature biogas residues and biogas slurry discharged by a biogas factory and the raw materials (namely the animal excrement), heat transmission can be realized between the biogas residues and slurry and the raw materials, the high-temperature biogas residues and biogas slurry discharged after anaerobic fermentation is used as a heat source for primary heating to heat the low-temperature raw materials. According to the heat energy reutilization device, heat needed for heating the raw materials can be reduced by about 45%, so that the aim of saving energy sources is realized and the economic benefits of biogas factories are improved.

Description

A kind of heat energy recycling device that utilizes waste heat to produce biogas
Technical field
The utility model belongs to environmental protection and field of energy-saving technology, relates to specifically a kind of heat energy recycling device that utilizes biogas residue and biogas liquid waste heat to produce biogas.
Background technology
Large-scale livestock plant (pig farm, cattle farm, poulty house etc.), for protection of the environment, makes full use of the energy, all has biogas factory, take excrement of animals and sewage as raw material, through anaerobically fermenting, produces biogas.Biogas is used for as fuel or generating, and the biogas residue and biogas liquid of generation can be as the fertilizer of high-quality and is utilized.But in northern frore area, winter temperature is very low, reach subzero 20~30 ℃, the temperature of the excrement of animals of livestock plant (marsh gas raw materials) is generally 2 ℃, these ight soil must be heated to 35 ℃ just can enter anaerobic fermentation tank fermentation decomposition generation biogas, be all that the hot water (or steam) that adopts hot water boiler (or steam boiler) to produce heats at present, need to consume a large amount of heat energy, thereby reduce the economic benefit of biogas factory; The biogas residue and biogas liquid temperature of simultaneously discharging from anaerobic fermentation tank is 35 ℃, is all to be directly discharged in physical environment coolingly in the past, has increased the weight of Greenhouse effect, has polluted environment.Patent of the present invention is to utilize the waste heat of biogas residue and biogas liquid to heat low temperature feedstock, fully recycles waste heat, reaches the object of energy-saving and cost-reducing environmental protection.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of heat-energy recycling system that utilizes biogas residue and biogas liquid waste heat to produce biogas is provided, the high temperature biogas residue and biogas liquid discharging after anaerobically fermenting of take is the raw material of the low temperature of heat source heating for the first time, reach the object of saving the energy, improve the economic benefit of biogas factory.
The theoretical foundation of the technical program is, according to the second law of thermodynamics, as the heat energy of one of energy, always spontaneously from high temperature, to low temperature place, to conduct.There is the temperature difference, just have the transmission of heat energy.The temperature of the biogas residue and biogas liquid of discharging due to anaerobic fermentation tank reaches 35 ℃, and material temperature in winter very low (2 ℃ of left and right), must be through heating, and make temperature reach 35 ℃ and just can enter anaerobic fermentation tank fermentation and decompose, produce biogas.Utilize the raw material (2 ℃) of biogas residue and biogas liquid (35 ℃) the heating low temperature of high temperature, because the temperature difference between the two reaches and utilizes waste heat, realize energy-saving and cost-reducing object.
The purpose of this utility model can be achieved through the following technical solutions:
The technical program is to have utilized between the biogas residue and biogas liquid of high temperature of biogas factory discharge and raw material (excrement of animals) to have the temperature difference, the principle that can conduct heat, use the biogas residue and biogas liquid of 35 ℃ of discharging from anaerobic fermentation tank 6 as heating agent, supply to one-level feed heater 4, heating raw (excrement of animals), makes material temperature be increased to 17 ℃ (and biogas residue and biogas liquid temperature be down to 20 ℃ by 35 ℃ discharge) by 2 ℃ again; Obtain preliminarily heated raw material reusable heat water (or steam) and be further heated to 35 ℃, then enter anaerobic fermentation tank 6 and produce biogas, the waste heat of biogas residue and biogas liquid is fully used, realized energy-saving and cost-reducing.
Utilize waste heat to produce a heat energy recycling device for biogas, it is characterized in that this device is by material allocation pond 1, material allocation pond stirrer 2, feedstock pump 3, one-level feed heater 4, secondary raw materials well heater 5, anaerobic fermentation tank 6, anaerobic jar well heater 7, Secondary Fermentation tank and gas-holder 8, biogas residue-biogas liquid pool 9, biogas residue and biogas liquid transferpump 10, hot water boiler 11, hot water circulating pump 12, by material allocation pond, be delivered to the feed line line 13 of anaerobic fermentation tank, hot water feeding pipe's line 14, hot water backwater's pipeline 15, by anaerobic fermentation tank, be delivered to the biogas residue and biogas liquid line of pipes 16 of Secondary Fermentation tank and gas-holder, the biogas that anaerobic fermentation tank is produced imports the pipeline 17 of gas-holder, the pipeline 18 that biogas in Secondary Fermentation tank and gas-holder is derived, by Secondary Fermentation tank and gas-holder, be delivered to the biogas residue and biogas liquid line of pipes 19 of biogas residue-biogas liquid pool, high temperature biogas residue and biogas liquid line of pipes 20, biogas residue and biogas liquid outfall pipeline 21 after cooling, Secondary Fermentation tank vent valves 22, material inlet 23, secondary raw materials well heater hot water outlet valve 24, secondary raw materials well heater hot water inlet valve 25, anaerobic fermentation tank vent valves 26, anaerobic jar stirrer 27 forms.
Wherein the position relationship of each integral part is as follows: material inlet 23, on the top in material allocation pond 1, is used for raw material to send into material allocation pond 1; One-level feed heater 4, adopts hang to be arranged on 1 pool wall of material allocation pond, is high temperature biogas residue and biogas liquid well heater; Secondary raw materials well heater 5, in material allocation pond 1, is hot water heater; Material allocation pond stirrer 2, in material allocation pond 1, plays allotment stirring action.
High temperature biogas residue and biogas liquid line of pipes 20, is the transport pipe that connects biogas residue-biogas liquid pool 9 and one-level feed heater 4, and the biogas residue and biogas liquid of 35 ℃ of high temperature is transported to one-level feed heater 4 from biogas residue-biogas liquid pool 9; Biogas residue and biogas liquid outfall pipeline 21 after cooling, is to connect one-level feed heater 4 and extraneous transport pipe, the biogas residue and biogas liquid that is cooled to 20 ℃ is transported to system discharges outward through one-level feed heater 4.
Hot water circulating pump 12, on the hot water feeding pipe's line 14 connecting between hot water boiler 11 and secondary raw materials well heater 5 and anaerobic jar well heater 7; Hot water feeding pipe's line 14, connects hot water boiler 11 and secondary raw materials well heater 5 and anaerobic jar well heater 7; Secondary raw materials well heater hot water inlet valve 25, on hot water feeding pipe's line 14; Hot water backwater's pipeline 15, connects hot water boiler 11 and secondary raw materials well heater 5 and anaerobic jar well heater 7; Secondary raw materials well heater hot water outlet valve 24, on hot water backwater's pipeline 15.
By material allocation pond, be delivered to the feed line line 13 of anaerobic fermentation tank, connect material allocation pond 1 and anaerobic fermentation tank 6; Wherein feedstock pump 3 is being delivered to by material allocation pond on the feed line line 13 of anaerobic fermentation tank, its effect be by raw material by material allocation pond 1, via material allocation pond, be delivered to the feed line line 13 of anaerobic fermentation tank, be delivered to anaerobic fermentation tank 6.
Anaerobic jar well heater 7 and anaerobic jar stirrer 27 are all in anaerobic fermentation tank 6; By anaerobic fermentation tank, be delivered to the biogas residue and biogas liquid line of pipes 16 of Secondary Fermentation tank and gas-holder, connect anaerobic fermentation tank 6 and Secondary Fermentation tank and gas-holder 8, for delivery of biogas residue and biogas liquid; Anaerobic fermentation tank vent valves 26, is being delivered to by anaerobic fermentation tank on the biogas residue and biogas liquid line of pipes 16 of Secondary Fermentation tank and gas-holder; The biogas that anaerobic fermentation tank is produced imports the pipeline 17 of gas-holder, also connect anaerobic fermentation tank 6 and Secondary Fermentation tank and gas-holder 8, but purposes is methane conveying.
The pipeline 18 that biogas in Secondary Fermentation tank and gas-holder is derived is pipelines that the biogas producing in anaerobic fermentation tank 6 and Secondary Fermentation tank and gas-holder 8 is derived; By Secondary Fermentation tank and gas-holder, be delivered to the biogas residue and biogas liquid line of pipes 19 of biogas residue-biogas liquid pool, connecting secondary fermentor tank and gas-holder 8 and biogas residue-biogas liquid pool 9; Wherein Secondary Fermentation tank vent valves 22, is being delivered on the biogas residue and biogas liquid line of pipes 19 of biogas residue-biogas liquid pool by Secondary Fermentation tank and gas-holder.
A kind of operation scheme of the heat energy recycling device that waste heat produces biogas of utilizing is as follows:
(1) first open Secondary Fermentation tank vent valves 22, the biogas residue and biogas liquid of 35 ℃ of high temperature in Secondary Fermentation tank and gas-holder 8 is disposed to biogas residue-biogas liquid pool 9; When the liquid level of Secondary Fermentation tank and gas-holder 8 reaches suitable low level, close Secondary Fermentation tank vent valves 22, stop discharge.
(2) open anaerobic fermentation tank bleed valve 26, the biogas residue and biogas liquid of 35 ℃ of high temperature is drained into Secondary Fermentation tank and gas-holder 8, after the liquid level of Secondary Fermentation tank and gas-holder 8 is attained to a high place, close anaerobic fermentation tank bleed valve 26.Now the liquid level of anaerobic fermentation tank 6 is in low-end trim.
(3) sewage of being discharged by plant place and excrement of animals be as raw material, by material inlet 23, and incoming stock preparing pool 1, then add appropriate sewage or allotment water to dilute.Confirm that material allocation pond 1 Raw liquid level is in high-end trim, and open 2 pairs of material allocations of material allocation pond stirrer and stir.
(4) start biogas residue and biogas liquid pump 10, the biogas residue and biogas liquid of 35 ℃ of high temperature is supplied to the one-level feed heater 4 being arranged on 1 pool wall of material allocation pond, after heating raw, the temperature of biogas residue and biogas liquid is down to 20 ℃ by 35 ℃, afterwards discharge.In this process, can be by regulating the flow of biogas residue and biogas liquid pump 10 to guarantee to make the temperature of biogas residue and biogas liquid to be down to 20 ℃ by 35 ℃.Only have this temperature drop of maintenance, just can reach the maximization of UTILIZATION OF VESIDUAL HEAT IN.
(5) material temperature in material allocation pond 1, after 4 heating of one-level feed heater, rises to 17 ℃ by 2 ℃; Then open hot water inlet valve 25 and the secondary raw materials well heater hot water outlet valve 24 of secondary raw materials well heater, start hot water circulating pump 12,95 ℃ of hot water that hot water boiler 11 is confessed, for to secondary raw materials well heater 5, are proceeded heating to raw material, make material temperature rise to 35 ℃ by 17 ℃.
(6) open feedstock pump 3, temperature is reached to the raw material of 35 ℃ for the decomposition of fermenting to anaerobic fermentation tank 6, produce biogas.The biogas that anaerobic fermentation tank 6 produces, via the biogas that anaerobic fermentation tank is produced, import the pipeline 17 of gas-holder, import Secondary Fermentation tank and gas-holder 8, then together with the biogas producing in Secondary Fermentation tank and gas-holder 8, via the pipeline 18 that the biogas in Secondary Fermentation tank and gas-holder is derived, derive.
Adopt the utility model technology can obtain following beneficial effect:
Can save a large amount of heat energy, reduce the running cost of biogas factory, increase economic efficiency.Take a large-scale pig farm of raising 10000 pigs is the beneficial effect of example explanation the technology.
10000 pigs produce pig manure 20Dun, biogas factory every day and adopt 2 500m 3anaerobic fermentation tank, anaerobic fermentation tank is discharged natural pond slag slag liquid (35 ℃) 50m every day 3, be also 50m for the raw material to anaerobic fermentation tank (pig manure, sewage and water mix) every day simultaneously 3.Material temperature is 2 ℃.After need being heated to 35 ℃, just can enter fermentor tank.If adopt original technology, need hot water boiler that 6.9MJ heat is provided.Adopt the technology, with the waste heat of biogas residue and biogas liquid (35 ℃), heat, make material temperature rise to 17 ℃ by 2 ℃, biogas residue and biogas liquid temperature is down to 20 ℃ by 35 ℃.Utilize waste heat heat for 3.14MJ, hot water boiler only need provide raw material is heated to 35 ℃ of required heats by 17 ℃, and the heat of 3.76MJ only need be provided.The technology can reduce by 45% left and right by the required heat of heating raw materials.
Meanwhile, the biogas residue and biogas liquid temperature of in the past discharging from anaerobic fermentation tank is 35 ℃, is all to be directly discharged in physical environment coolingly, has increased the weight of Greenhouse effect, has polluted environment.The utility model technology utilizes the waste heat of biogas residue and biogas liquid to heat low temperature feedstock (excrement of animals), fully recycles waste heat, reaches the object of energy-saving and cost-reducing environmental protection.
Accompanying drawing explanation
Fig. 1 is a kind of workflow schematic diagram of the present utility model.
Shown in figure: material allocation pond 1, material allocation pond stirrer 2, feedstock pump 3, one-level feed heater 4, secondary raw materials well heater 5, anaerobic fermentation tank 6, anaerobic jar well heater 7, Secondary Fermentation tank and gas-holder 8, biogas residue-biogas liquid pool 9, biogas residue and biogas liquid transferpump 10, hot water boiler 11, hot water circulating pump 12, by material allocation pond, be delivered to the feed line line 13 of anaerobic fermentation tank, hot water feeding pipe's line 14, hot water backwater's pipeline 15, by anaerobic fermentation tank, be delivered to the biogas residue and biogas liquid line of pipes 16 of Secondary Fermentation tank and gas-holder, the biogas that anaerobic fermentation tank is produced imports the pipeline 17 of gas-holder, the pipeline 18 that biogas in Secondary Fermentation tank and gas-holder is derived, by Secondary Fermentation tank and gas-holder, be delivered to the biogas residue and biogas liquid line of pipes 19 of biogas residue-biogas liquid pool, high temperature biogas residue and biogas liquid line of pipes 20, biogas residue and biogas liquid outfall pipeline 21 after cooling, Secondary Fermentation tank vent valves 22, material inlet 23, secondary raw materials well heater hot water outlet valve 24, secondary raw materials well heater hot water inlet valve 25, anaerobic fermentation tank vent valves 26, anaerobic jar stirrer 27.
Embodiment
Below in conjunction with accompanying drawing, for example the utility model is described further.
Embodiment 1
As shown in Figure 1, a kind of heat energy recycling device that utilizes waste heat to produce biogas, is characterized in that this device is by material allocation pond 1, material allocation pond stirrer 2, feedstock pump 3, one-level feed heater 4, secondary raw materials well heater 5, anaerobic fermentation tank 6, anaerobic jar well heater 7, Secondary Fermentation tank and gas-holder 8, biogas residue-biogas liquid pool 9, biogas residue and biogas liquid transferpump 10, hot water boiler 11, hot water circulating pump 12, by material allocation pond, be delivered to the feed line line 13 of anaerobic fermentation tank, hot water feeding pipe's line 14, hot water backwater's pipeline 15, by anaerobic fermentation tank, be delivered to the biogas residue and biogas liquid line of pipes 16 of Secondary Fermentation tank and gas-holder, the biogas that anaerobic fermentation tank is produced imports the pipeline 17 of gas-holder, the pipeline 18 that biogas in Secondary Fermentation tank and gas-holder is derived, by Secondary Fermentation tank and gas-holder, be delivered to the biogas residue and biogas liquid line of pipes 19 of biogas residue-biogas liquid pool, high temperature biogas residue and biogas liquid line of pipes 20, biogas residue and biogas liquid outfall pipeline 21 after cooling, Secondary Fermentation tank vent valves 22, material inlet 23, secondary raw materials well heater hot water outlet valve 24, secondary raw materials well heater hot water inlet valve 25, anaerobic fermentation tank vent valves 26, anaerobic jar stirrer 27 forms.
Embodiment 2
As shown in Figure 1, a kind of position relationship of each integral part of heat energy recycling device that waste heat produces biogas that utilizes is as follows: material inlet 23, on the top in material allocation pond 1, is used for raw material to send into material allocation pond 1; One-level feed heater 4, adopts hang to be arranged on 1 pool wall of material allocation pond, is high temperature biogas residue and biogas liquid well heater; Secondary raw materials well heater 5, in material allocation pond 1, is hot water heater; Material allocation pond stirrer 2, in material allocation pond 1, plays allotment stirring action.
High temperature biogas residue and biogas liquid line of pipes 20, is the transport pipe that connects biogas residue-biogas liquid pool 9 and one-level feed heater 4, and the biogas residue and biogas liquid of 35 ℃ of high temperature is transported to one-level feed heater 4 from biogas residue-biogas liquid pool 9; Biogas residue and biogas liquid outfall pipeline 21 after cooling, is to connect one-level feed heater 4 and extraneous transport pipe, the biogas residue and biogas liquid that is cooled to 20 ℃ is transported to system discharges outward through one-level feed heater 4.
Hot water circulating pump 12, on the hot water feeding pipe's line 14 connecting between hot water boiler 11 and secondary raw materials well heater 5 and anaerobic jar well heater 7; Hot water feeding pipe's line 14, connects hot water boiler 11 and secondary raw materials well heater 5 and anaerobic jar well heater 7; Secondary raw materials well heater hot water inlet valve 25, on hot water feeding pipe's line 14; Hot water backwater's pipeline 15, connects hot water boiler 11 and secondary raw materials well heater 5 and anaerobic jar well heater 7; Secondary raw materials well heater hot water outlet valve 24, on hot water backwater's pipeline 15.
By material allocation pond, be delivered to the feed line line 13 of anaerobic fermentation tank, connect material allocation pond 1 and anaerobic fermentation tank 6; Wherein feedstock pump 3 is being delivered to by material allocation pond on the feed line line 13 of anaerobic fermentation tank, its effect be by raw material by material allocation pond 1, via material allocation pond, be delivered to the feed line line 13 of anaerobic fermentation tank, be delivered to anaerobic fermentation tank 6.
Anaerobic jar well heater 7 and anaerobic jar stirrer 27 are all in anaerobic fermentation tank 6; By anaerobic fermentation tank, be delivered to the biogas residue and biogas liquid line of pipes 16 of Secondary Fermentation tank and gas-holder, connect anaerobic fermentation tank 6 and Secondary Fermentation tank and gas-holder 8, for delivery of biogas residue and biogas liquid; Anaerobic fermentation tank vent valves 26, is being delivered to by anaerobic fermentation tank on the biogas residue and biogas liquid line of pipes 16 of Secondary Fermentation tank and gas-holder; The biogas that anaerobic fermentation tank is produced imports the pipeline 17 of gas-holder, also connect anaerobic fermentation tank 6 and Secondary Fermentation tank and gas-holder 8, but purposes is methane conveying.
The pipeline 18 that biogas in Secondary Fermentation tank and gas-holder is derived is pipelines that the biogas producing in anaerobic fermentation tank 6 and Secondary Fermentation tank and gas-holder 8 is derived; By Secondary Fermentation tank and gas-holder, be delivered to the biogas residue and biogas liquid line of pipes 19 of biogas residue-biogas liquid pool, connecting secondary fermentor tank and gas-holder 8 and biogas residue-biogas liquid pool 9; Wherein Secondary Fermentation tank vent valves 22, is being delivered on the biogas residue and biogas liquid line of pipes 19 of biogas residue-biogas liquid pool by Secondary Fermentation tank and gas-holder.
Embodiment 3
As shown in Figure 1, a kind of operation scheme of the heat energy recycling device that waste heat produces biogas of utilizing is as follows:
(1) open Secondary Fermentation tank vent valves 22, the biogas residue and biogas liquid of 35 ℃ of high temperature in Secondary Fermentation tank and gas-holder 8 is disposed to biogas residue-biogas liquid pool 9.When the liquid level of Secondary Fermentation tank and gas-holder 8 reaches suitable low level, close Secondary Fermentation tank vent valves 22, stop discharge.
(2) open anaerobic fermentation tank bleed valve 26, the biogas residue and biogas liquid of 35 ℃ of high temperature is drained into Secondary Fermentation tank and gas-holder 8, after the liquid level of Secondary Fermentation tank and gas-holder 8 is attained to a high place, close anaerobic fermentation tank bleed valve 26.Now the liquid level of anaerobic fermentation tank 6 is in low-end trim.
(3) raw material is by material inlet 23, and incoming stock preparing pool 1, adds sewage or allotment water to dilute.Confirm that material allocation pond 1 Raw liquid level is in high-end trim, and open 2 pairs of raw material stirring allotments of material allocation pond stirrer.
(4) start biogas residue and biogas liquid pump 10, the biogas residue and biogas liquid of 35 ℃ of high temperature is supplied to the one-level feed heater 4 being arranged on 1 pool wall of material allocation pond, after heating raw, the temperature of biogas residue and biogas liquid is down to 20 ℃ by 35 ℃, afterwards discharge.In this process, can be by regulating the flow of biogas residue and biogas liquid pump 10 to guarantee to make the temperature of biogas residue and biogas liquid to be down to 20 ℃ by 35 ℃.Only have this temperature drop of maintenance, just can reach the maximization of UTILIZATION OF VESIDUAL HEAT IN.
(5) after the material temperature in material allocation pond 1 heats by one-level feed heater 4, by 2 ℃, rise to 17 ℃; Then open hot water inlet valve 25 and the secondary raw materials well heater hot water outlet valve 24 of secondary raw materials well heater, start hot water circulating pump 12,95 ℃ of hot water that hot water boiler 11 is confessed, for to secondary raw materials well heater 5, are proceeded heating to raw material, make material temperature rise to 35 ℃ by 17 ℃.
(6) open feedstock pump 3, temperature is reached to the raw material of 35 ℃ for the decomposition of fermenting to anaerobic fermentation tank 6, produce biogas.The biogas that anaerobic fermentation tank 6 produces, via the biogas that anaerobic fermentation tank is produced, import the pipeline 17 of gas-holder, import Secondary Fermentation tank and gas-holder 8, then together with the biogas producing in Secondary Fermentation tank and gas-holder 8, via the pipeline 18 that the biogas in Secondary Fermentation tank and gas-holder is derived, derive.
Embodiment 4
As shown in Figure 1, for temperature variation and the energy-saving effect of monitoring raw material and biogas residue and biogas liquid, in material allocation pond 1 and anaerobic fermentation tank 6, and in biogas residue and biogas liquid outfall pipeline 21, be equipped with temperature monitor after high temperature biogas residue and biogas liquid line of pipes 20 and cooling.
Embodiment 5
As shown in Figure 1, according to raw material number different with the scale of producing biogas, anaerobic fermentation tank can be 6 one of anaerobic fermentation tanks, can be also to consist of a plurality of anaerobic fermentation tank parallel connections.

Claims (1)

1. utilize waste heat to produce a heat energy recycling device for biogas, it is characterized in that this device is by material allocation pond (1), material allocation pond stirrer (2), feedstock pump (3), one-level feed heater (4), secondary raw materials well heater (5), anaerobic fermentation tank (6), anaerobic jar well heater (7), Secondary Fermentation tank and gas-holder (8), biogas residue-biogas liquid pool (9), biogas residue and biogas liquid transferpump (10), hot water boiler (11), hot water circulating pump (12), by material allocation pond, be delivered to the feed line line (13) of anaerobic fermentation tank, hot water feeding pipe's line (14), hot water backwater's pipeline (15), by anaerobic fermentation tank, be delivered to the biogas residue and biogas liquid line of pipes (16) of Secondary Fermentation tank and gas-holder, the biogas that anaerobic fermentation tank is produced imports the pipeline (17) of gas-holder, the pipeline (18) that biogas in Secondary Fermentation tank and gas-holder is derived, by Secondary Fermentation tank and gas-holder, be delivered to the biogas residue and biogas liquid line of pipes (19) of biogas residue-biogas liquid pool, high temperature biogas residue and biogas liquid line of pipes (20), biogas residue and biogas liquid outfall pipeline (21) after cooling, Secondary Fermentation tank vent valves (22), material inlet (23), secondary raw materials well heater hot water outlet valve (24), secondary raw materials well heater hot water inlet valve (25), anaerobic fermentation tank vent valves (26), anaerobic jar stirrer (27) forms.
CN201320394447.2U 2013-07-04 2013-07-04 Heat energy reutilization device for producing biogas by residual heat Active CN203474609U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104628130A (en) * 2015-01-24 2015-05-20 云浮市益康生环保科技有限公司 Efficient and stable modular anaerobic fermentation device
CN110172391A (en) * 2019-05-22 2019-08-27 甘肃方正节能科技服务有限公司 Large-sized biogas anaerobic fermentation system drain heat energy recovery system and method
CN111578253A (en) * 2019-12-19 2020-08-25 江苏京泓生态环保有限公司 Waste heat utilization system related to oil extraction anaerobic tank equipment
CN111578252A (en) * 2019-12-11 2020-08-25 江苏京泓生态环保有限公司 Waste heat utilization system related to purification anaerobic tank equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104628130A (en) * 2015-01-24 2015-05-20 云浮市益康生环保科技有限公司 Efficient and stable modular anaerobic fermentation device
CN110172391A (en) * 2019-05-22 2019-08-27 甘肃方正节能科技服务有限公司 Large-sized biogas anaerobic fermentation system drain heat energy recovery system and method
CN111578252A (en) * 2019-12-11 2020-08-25 江苏京泓生态环保有限公司 Waste heat utilization system related to purification anaerobic tank equipment
CN111578253A (en) * 2019-12-19 2020-08-25 江苏京泓生态环保有限公司 Waste heat utilization system related to oil extraction anaerobic tank equipment

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