CN205383638U - Marsh gas for steam boiler - natural gas mixes gas system that uses - Google Patents
Marsh gas for steam boiler - natural gas mixes gas system that uses Download PDFInfo
- Publication number
- CN205383638U CN205383638U CN201620184876.0U CN201620184876U CN205383638U CN 205383638 U CN205383638 U CN 205383638U CN 201620184876 U CN201620184876 U CN 201620184876U CN 205383638 U CN205383638 U CN 205383638U
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- CN
- China
- Prior art keywords
- gas
- methane
- biogas
- generating pit
- natural gas
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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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
Abstract
Marsh gas for the steam boiler the mixed gas system that uses of the natural gas, including first methane -generating pit, the second methane -generating pit, mix the gas holder, steam boiler, first methane -generating pit, be equipped with between the second methane -generating pit between water pressure, first methane -generating pit, be equipped with first air outlet valve on the outlet duct of second methane -generating pit respectively, the second air outlet valve, first methane -generating pit, the marsh gas intake pipe is all connected to the outlet duct of second methane -generating pit, be equipped with the booster pump in the marsh gas intake pipe, the first control valve that admits air, the marsh gas intake pipe is inserted from mixing gas holder lower part basin. Natural gas intake pipe is inserted from mixing gas holder lower part basin, is equipped with the second control valve that admits air in the natural gas intake pipe. It is equipped with the blow -down pipe to mix the gas holder top. The outlet duct is drawn by mixing gas holder lower part basin, and the outlet duct inserts steam boiler's gas import. Booster pump, the first control valve that admits air, second admit air the control valve all connects automatic control device. The utility model discloses the system can effectively utilize the mixed natural gas of marsh gas, has both guaranteed steam boiler normal operating, and the furthest utilization can the palingenetic energy again.
Description
Technical field
This utility model relates to steam boiler gas system, is specially a kind of steam boiler biogas-natural gas mixing gas system.
Background technology
Boiler is a kind of energy conversion, and the energy to boiler input has the forms such as the heat energy of the chemical energy in fuel, electric energy, high-temperature flue gas, and changes through boiler, and outwards output has the steam of certain heat energy, high-temperature water or organic heat carrier.The hot water produced in boiler or steam directly can provide required heat energy for commercial production and people's lives, it is possible to be converted to mechanical energy by Steam Power Equipment, or convert mechanical energy into electric energy by electromotor again.
Steam boiler typically has following several form:
Methane boiler includes biogas boiler, biogas hot-water boiler, biogas heating boiler, biogas bath boiler and biogas steam boiler etc., methane boiler refers to utilize biogas combustion the gas fired-boiler of water or other heating medium for heating to certain parameter, he is the same with other gas fired-boiler is all room combusting boiler, and simply fuel is different.
Methane boiler is divided into biogas drinking water boiler, biogas hot-water boiler, biogas steam boiler, biogas boiler of organic heat carrier according to medium；It is divided into biogas heating boiler, biogas bath boiler, biogas steam boiler etc. according to purposes.
The fuel of oil burning boiler is fuel oil (such as diesel oil, machine oil, kerosene etc.), the fuel of gas fired-boiler is combustion gas (such as natural gas, town gas, biogas etc.), depend on that boiler fires the equipment of what fuel burner, the boiler of configuration gas burner is gas fired-boiler, the boiler of configuration oil burner is to use the burner of what fuel the difference of oil burning boiler, oil burning boiler and gas fired-boiler.
Coal-burning boiler refers to the coal of fuel combustion, after coal heat is inverted, produces steam or becomes hot water, but not all heat the most effectively converts, some reactive power consumption, thus there is efficiency, more general boiler efficiency is high, between 60% ~ 80%.
nullThe general fuel of steam boiler is fuel oil and combustion gas at present，Because coal-burning boiler three-protection design amount is big，Seriously polluted，It is only applicable to large enterprise and thermal power plant，For medium-sized and small enterprises or public service，It is all to use combustion gas or oil-fired steam boiler，And generally use single-fuel，As: the design of Burning Natural Gas In Boiler Chamber can only use natural gas exactly，Biogas boiler is exactly only to use biogas，But，In actual environment，Natural gas resource is non-renewable energy resources，Biogas is regenerative resource，How Reasonable Utilization of Natural Gas and biogas，Maximizing the new problem being exactly pendulum in face of us by utilization of regenerative energy，Namely biogas and natural gas are used as the fuel gas complemented each other，Utilize biogas as far as possible，The most do not affect the properly functioning of boiler and exert oneself，Gaseous mixture is used to burn，It is necessary for mixing arrangement and hybrid technique are carried out research to solve the problems referred to above.
Summary of the invention
This utility model provides a kind of steam boiler biogas-natural gas mixing gas system, biogas mixed gas can be effectively utilized, both ensure that steam boiler was properly functioning, the most farthest utilize reproducible energy biogas, use automaton, precisely regulate, save manual operation；The generation of operating accident can be prevented effectively from, there is preferable development prospect.
This utility model be the technical scheme is that
Steam boiler biogas-natural gas mixing gas system, including the first methane-generating pit, the second methane-generating pit, mixing gas holder, steam boiler, it is provided with water pressure chamber between first methane-generating pit, the second methane-generating pit, first methane-generating pit, the second methane-generating pit escape pipe on be respectively equipped with the first air outlet valve, the second air outlet valve, first methane-generating pit, the escape pipe of the second methane-generating pit are all connected with biogas air inlet pipe, biogas air inlet pipe is provided with booster pump, the first air intake control valve, and biogas air inlet pipe is inserted from mixing gas holder bottom tank.Natural gas air inlet pipe is inserted from mixing gas holder bottom tank, and natural gas air inlet pipe is provided with the second air intake control valve.Mixing gas holder top is provided with blow-down pipe.Escape pipe is drawn by mixing gas holder bottom tank, and escape pipe accesses the fuel gas inlet of steam boiler.Described booster pump, the first air intake control valve, the second air intake control valve are all connected with automaton.
Described biogas air inlet pipe is provided with biogas check-valves, biogas effusion meter.
Described natural gas air inlet pipe is provided with natural gas check-valves, natural gas flowmeter.
On described blow-down pipe, relief valve is set.
On described escape pipe, air outlet valve is set.
A kind of biogas-natural gas mixes gas method, for intermittently used steam boiler, first natural gas is charged into mixing gas holder, stops when being filled into the 65% of mixing gas holder total measurement (volume), biogas is charged into mixing gas holder the most again, reach to mix the total measurement (volume) of gas holder, now biogas air inflow is the 35% of total measurement (volume), makes biogas and natural gas be sufficiently mixed in mixing gas holder, then opens air outlet valve, making gaseous mixture enter steam boiler to burn, mixture ratio determines control at gaseous mixture scale cashier's office in a shop；When methane-generating pit pressure reduces, during less than mixing gas holder pressure, start booster pump supercharging, make biogas uninterruptedly enter mixing gas holder, reach mixed proportion requirement.
A kind of biogas-natural gas mixes gas method, for the steam boiler used continuously, to be carried out mix while by pattern, utilize natural gas flowmeter and the second air intake control valve linkage relationship, by suitable for gas discharge regulation, utilize booster pump and the first air intake control valve, the chain regulation relation of biogas effusion meter simultaneously, biogas Flow-rate adjustment is suitable, deliver to mix gas holder simultaneously.This technology key technology is to use the chain regulation technology of automaton, is mixed by the stability of flow of two kinds of fuel, just can make gas fired-boiler stable operation below in required ratio.Therefore, under conditions of gas pressure substantially constant, stablize the admission pressure of biogas it is critical that.
This utility model steam boiler biogas-natural gas mixing gas system, uses conversion system to overcome biogas pressure shakiness, the defect of flowed fluctuation by Marsh gas booster pump.So, the gaseous mixture of boiler just can be continuously available supply.In the case of biogas output deficiency, boiler air inlet can be changed again and directly use natural gas.
This utility model steam boiler biogas-natural gas mixing gas system, biogas mixed gas can be effectively utilized, both ensure that steam boiler was properly functioning, the most farthest utilize the reproducible energy-biogas, use automaton, precisely regulate, save manual operation, the generation of operating accident can be prevented effectively from, there is preferable development prospect.
Accompanying drawing explanation
Fig. 1 is the connection diagram of this utility model system.
Detailed description of the invention
As it is shown in figure 1, steam boiler biogas-natural gas mixing gas system, including first methane-generating pit the 1, second methane-generating pit 3, mixing gas holder 4, steam boiler 5, between first methane-generating pit the 1, second methane-generating pit 3, it is provided with water pressure chamber 2, is used for sealing gas.First air outlet valve the 14, second air outlet valve 13 it is respectively equipped with on the escape pipe of the gas outlet, top of first methane-generating pit the 1, second methane-generating pit 3, the escape pipe of first methane-generating pit the 1, second methane-generating pit 3 is all connected with biogas air inlet pipe 7, biogas air inlet pipe 7 is provided with booster pump the 12, first air intake control valve 11 with frequency modulation motor, and biogas air inlet pipe 7 is inserted from mixing gas holder 4 bottom tank.Natural gas air inlet pipe 6 is introduced by plant area is outside, and natural gas air inlet pipe 6 is inserted from mixing gas holder 4 bottom tank, and natural gas air inlet pipe 6 is provided with the second air intake control valve 10.The bell jar top of mixing gas holder 4 is provided with blow-down pipe 21.Escape pipe 8 is drawn by mixing gas holder 4 bottom tank, and escape pipe 8 accesses the fuel gas inlet of steam boiler 5.Described booster pump the 12, first air intake control valve the 11, second air intake control valve 10 is all connected with automaton 19.Automaton 19 carries out chain control to the flow pressure of system and the frequency conversion of booster pump 12.
Described biogas air inlet pipe 7 is provided with biogas check-valves 15, biogas effusion meter 17.
Described natural gas air inlet pipe 6 is provided with natural gas check-valves 16, natural gas flowmeter 18.
On described blow-down pipe 21, relief valve 20 is set.Mixing gas holder 4 top arrange blow-down pipe 21 and relief valve 20 be anti-locking system occur abnormal time, mixing the inner hypertonia of gas holder 4 after be vented blood pressure lowering, protection mixing gas holder 4.
In the middle part of described escape pipe 8, air outlet valve 9 is set.
First methane-generating pit the 1, second methane-generating pit 3 is all made as 180 m3Volume, it is 200m that mixing gas holder 4 makes total measurement (volume)3, steam boiler 5 is 2t/h.
Technological operation has a both of which:
1, intermittently operated.When workshop interval gas, the mixed gas of interval taked by mixing gas holder 4, now the second air intake control valve 10 in natural gas air inlet pipe 6 is opened, natural gas is made to enter gaseous mixture cabinet 4 after the second air intake control valve 10, natural gas check-valves 16, natural gas flowmeter 18, now gas pressure is 0.01MPa, and under pressure, bell jar constantly rises mixing gas holder 4, when rising scale arrival 65% ~ 70%, close the second air intake control valve 10；Again first air outlet valve the 14, second air outlet valve 13 is opened, then open the first air intake control valve 11, observe whether biogas effusion meter 17 has flow, if there being the bell jar just observing mixing gas holder 4 to rise scale, when rising to total measurement (volume) scale, close the first air intake control valve 11, gas mixed nub bundle.Again ready steam boiler 5 is lighted, open air outlet valve 9, make gaseous mixture be sent into steam boiler 5 and use.If when mixed gas, biogas effusion meter 17 does not has flow indication, then show the gas pressure that biogas pressure is less than in mixing gas holder 4, should start booster pump 12 supercharging in time, control charge flow rate with frequency conversion motor.
2, continuous operation.First gaseous mixture is filled with mixing gas holder 4 volume 50% by intermittent mode, then by chain with natural gas flowmeter 18 and biogas effusion meter 17 by automaton 19 to the second air intake control valve 10 and the first air intake control valve 11, make natural gas and biogas in proportion go successively to mix gas holder 4, then open air outlet valve 9 make gaseous mixture enter steam boiler 5 use；The specified gas consumption of steam boiler 5 is 110 m3/ h, minimum 35 ~ 50 m of the amount of natural gas after mixing3/ h, gaseous mixture is about 140m altogether3/ h, notes charge flow rate and to go out throughput in a basic balance, and mixing gas holder 4 gas-storing capacity does not occur big ups and downs.When biogas pressure is more than gas pressure, booster pump 12 quits work, and up to 0.03MPa when biogas pressure in methane-generating pit is the highest, therefore, regulates the core that biogas flow is this technological operation.When biogas pressure is reduced to 0.005MPa or when needing maintenance, being closed by the first air intake control valve 11, natural gas tunes up, and continues supply to steam boiler 5.
Claims (5)
1. steam boiler biogas-natural gas mixing gas system, including the first methane-generating pit (1), second methane-generating pit (3), mixing gas holder (4), steam boiler (5), it is characterized in that, first methane-generating pit (1), water pressure chamber (2) it is provided with between second methane-generating pit (3), first methane-generating pit (1), the first air outlet valve (14) it is respectively equipped with on the escape pipe of the second methane-generating pit (3), second air outlet valve (13), first methane-generating pit (1), the escape pipe of the second methane-generating pit (3) is all connected with biogas air inlet pipe (7), biogas air inlet pipe (7) is provided with booster pump (12), first air intake control valve (11), biogas air inlet pipe (7) is inserted from mixing gas holder (4) bottom tank；Natural gas air inlet pipe (6) is inserted from mixing gas holder (4) bottom tank, and natural gas air inlet pipe (6) is provided with the second air intake control valve (10)；Mixing gas holder (4) top is provided with blow-down pipe (21)；Escape pipe (8) is drawn by mixing gas holder 4 bottom tank, and escape pipe (8) accesses the fuel gas inlet of steam boiler (5), and described booster pump (12), the first air intake control valve (11), the second air intake control valve (10) are all connected with automaton (19).
Steam boiler biogas-natural gas mixing gas system the most according to claim 1, it is characterised in that described biogas air inlet pipe (7) is provided with biogas check-valves (15), biogas effusion meter (17).
Steam boiler biogas-natural gas mixing gas system the most according to claim 1, it is characterised in that described natural gas air inlet pipe (6) is provided with natural gas check-valves (16), natural gas flowmeter (18).
Steam boiler biogas-natural gas mixing gas system the most according to claim 1, it is characterised in that relief valve (20) is set on described blow-down pipe (21).
Steam boiler biogas-natural gas mixing gas system the most according to claim 1, it is characterised in that air outlet valve (9) is set on described escape pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184876.0U CN205383638U (en) | 2016-03-11 | 2016-03-11 | Marsh gas for steam boiler - natural gas mixes gas system that uses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184876.0U CN205383638U (en) | 2016-03-11 | 2016-03-11 | Marsh gas for steam boiler - natural gas mixes gas system that uses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205383638U true CN205383638U (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620184876.0U Withdrawn - After Issue CN205383638U (en) | 2016-03-11 | 2016-03-11 | Marsh gas for steam boiler - natural gas mixes gas system that uses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205383638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605601A (en) * | 2016-03-11 | 2016-05-25 | 宜都市桥河食品有限公司 | Methane and natural gas mixed gas system for steam boiler |
-
2016
- 2016-03-11 CN CN201620184876.0U patent/CN205383638U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605601A (en) * | 2016-03-11 | 2016-05-25 | 宜都市桥河食品有限公司 | Methane and natural gas mixed gas system for steam boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160713 Effective date of abandoning: 20171031 |
|
| AV01 | Patent right actively abandoned |