CN106051743B - A kind of methane boiler combustion system - Google Patents
A kind of methane boiler combustion system Download PDFInfo
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- CN106051743B CN106051743B CN201610357112.1A CN201610357112A CN106051743B CN 106051743 B CN106051743 B CN 106051743B CN 201610357112 A CN201610357112 A CN 201610357112A CN 106051743 B CN106051743 B CN 106051743B
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- control valve
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- biogas
- combustion system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
- F23C1/04—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air lump and gaseous fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The present invention provides a kind of methane boiler combustion systems; including biogas combustion system and raw coal combustion system; wherein described biogas combustion system includes biogas generating device, water seal arrangement, protection nitrogen source, blower fan apparatus, anti-backfire burner, boiler, control valve components, sensor element, duct element and gas control system, the raw coal combustion system and includes run coal bin, transfer passage, coal bunker control valve, air-introduced machine one, the air compartment positioned at boiler bottom, slag bucket.The output terminal of the sensor element and the input terminal of gas control system connect, and the output terminal of the gas control system is connect with pneumatic control valve components.By the way that the collocation of biogas combustion system and raw coal combustion equipment is combined, the stability of this system is improved；All pneumatic operated valves of whole system are equipped with hand-operated valve, i.e. bivalve group, in air source power supply when something goes wrong, are manually operable, safe；Also have the advantages that steam thermal energy utilization rate is high simultaneously.
Description
Technical field
The present invention relates to biogas combustion technical fields, and in particular to a kind of methane boiler combustion system.
Background technology
As society is to the growing of energy demand, the fossil fuel as main energy sources source is but promptly reduced.
Therefore, a kind of reproducible alternative energy source is found, becomes the focus of social common concern.Exhaust gas, waste heat are that one kind preferably may be used
The energy is recycled, it is derived from a wealth of sources, and has a large amount of industry, agricultural wastes output every year.
It is generated electricity using exhaust gas, heat supply is a kind of one of important way of reusing of energy source.Many chemical industries, rural area have
A large amount of biogas generates.Biogas is a kind of imflammable gas that organic matter forms under anaerobic through microorganism decomposition fermentation,
Its main ingredient is methane (CH4) and carbon dioxide (CO2), it is generally the case that methane (CH4) content in biogas is 50%-
70%, carbon dioxide (CO2) content is 30%-40%, and other gas contents are seldom, and calorific value 21520kJ is equivalent to 1.45m3
The calorific value of coal gas or 0.69m3 natural gases.Current research shows that the greenhouse effects of methane are 23-25 times of carbon dioxide, so
The direct emission of methane influences even more serious caused by environment.On the other hand, biogas is have higher thermal value flammable in itself
Gas, using biogas as fuel, directly burning is also one of effective way for reducing pollutant emission using being the recycling of the energy.
But influenced due to being changed repeatedly by methane-generating pit fermentation appearance, air pressure situation etc., often this is strong to biomass pool body
Degree, boiler, kitchen range efficiency of combustion stability and improve have detrimental effect, especially in the burning that some cannot be interrupted
In device, still it is necessary to coordinate raw coal system or device as auxiliary combustion.But when using raw coal and the common combustion of biogas
During burning system, due to the different ignition quality of the two and burning condition, the safety of biogas and raw coal system and device how is ensured
The problem of being one very big.
Invention content
In view of the above problems, the present invention provides a kind of methane boiler combustion system, by by biogas combustion system and original
The collocation of coal-firing device combines, so that influence drop of the variation of methane-generating pit air pressure situation, fermentation appearance to burner
It is extremely minimum, improve the stability of combustion system.Methane boiler combustion system provided by the invention is provided with detection sensor simultaneously
Element, hand pneumatic control valve have the characteristics that security performance is high under emergency case, and the high steam of the present apparatus is through gas-turbine band
Low-pressure steam after dynamic electrical power generators has the advantages that steam thermal energy utilization rate is high using low pressure drying channel.
In order to realize the technical purpose of the present invention, the present invention adopts the following technical scheme that.
A kind of methane boiler combustion system, including biogas combustion system and raw coal combustion system, the biogas combustion system
Including biogas generating device, water seal arrangement, protection nitrogen source, blower fan apparatus, anti-backfire burner, boiler, control valve components, sensing
Device element, duct element and gas control system, the biogas generating device, protection nitrogen source pass through duct element and water seal arrangement
Connection, the blower fan apparatus include regulating fan and air-introduced machine two, and the regulating fan fires respectively with water seal arrangement and anti-backfire
Burner connects, and described anti-backfire burner one end is connected by duct element with air-introduced machine two, and the other end connects with boiler upper side wall
It connects；The top of the water seal arrangement is connected with safety valve and pressure gauge；The control valve components include and anti-backfire burner connects
Biogas pneumatic control valve, the biogas hand control valve connect；The raw coal combustion system includes run coal bin, transfer passage, coal bunker control
Valve processed, air-introduced machine one, the air compartment positioned at boiler bottom, slag bucket, the coal bunker control valve include being arranged on run coal bin and boiler room
Coal bunker hand control valve, coal bunker pneumatic control valve, the run coal bin connect by conveyance conduit with boiler, the bottom of the boiler
Portion is connected with slag bucket by conveyance conduit, to discharge the cinder after burning in boiler；The control valve components include pneumatic control
Valve components processed and hand control valve element；The sensor element includes being arranged on the wind pressure sensor of regulating fan front end and set
It puts the biogas concentration detection sensor in regulating fan rear end, the flame sensor being connected with anti-backfire burner and is arranged on pot
The fire box temperature sensor of stove madial wall；The output terminal of the sensor element and the input terminal of gas control system connect, institute
The output terminal for stating gas control system is connect with biogas pneumatic control valve, regulating fan, air-introduced machine two.
Further, the main pipeline that the control valve components include being arranged between biogas generating device and water seal arrangement is arranged manually
Empty control valve, main pipeline pneumatically empty control valve, be arranged on accident hand-held evacuation control valve between water seal arrangement and regulating fan,
Accident pneumatically empties control valve, is arranged on water seal arrangement and protects nitrogen hand control valve, the nitrogen pneumatic control valve between nitrogen source,
The anti-hand control valve that strile-backs, the anti-pneumatic control valve that strile-backs being arranged between air-introduced machine two and anti-backfire burner；The main pipeline
Pneumatic emptying control valve, accident pneumatically empty control valve, nitrogen pneumatic control valve, biogas pneumatic control valve, coal bunker pneumatic control
The input terminal of valve and the anti-pneumatic control valve that strile-backs is connect with the output terminal of gas control system.
Further, the top of the boiler is also associated with gas-turbine, and the gas-turbine is connected with generator, the generator
It is connected with electric energy output end.
Further, the gas-turbine is also associated with low-pressure steam channel.
Further, at least one group of the coal bunker control valve, preferably three groups.
The beneficial effects of the invention are as follows：A kind of methane boiler combustion system provided by the invention, compared with prior art, tool
It has the advantage that.
1. by the way that the collocation of biogas combustion system and raw coal combustion equipment is combined, so that methane-generating pit air pressure situation,
Influence of the variation of fermentation appearance to burner minimizes, and improves the stability of this combustion system；
2. by being provided with many places detection sensor element in methane boiler combustion system, hand, pneumatic control valve components,
Under the emergency cases such as power-off, closing control valve is manually operable, has the characteristics that security performance is high；
3. low-pressure steam of the present apparatus high steam after gas-turbine drives electrical power generators, using low pressure drying channel
Pre-heating drying is carried out, has the advantages that steam thermal energy utilization rate is high.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described：
Fig. 1 is the structure diagram of methane boiler combustion system device in the present invention.
In figure：1- biogas generating devices；11- gas control systems；21- main pipeline hand-held evacuation control valves；22- main pipelines
Pneumatic emptying control valve；23- accident hand-held evacuation control valves；24- accidents pneumatically empty control valve；25- nitrogen hand control valves；
26- nitrogen pneumatic control valves；27- biogas pneumatic control valves；28- biogas hand control valves；29- coal bunker hand control valves；210-
Coal bunker pneumatic control valve；3- water seal arrangements；31- safety valves；32- pressure gauges；4- protects nitrogen source；5- regulating fans；51- wind pressure passes
Sensor；52- biogas concentration detection sensors；6- anti-backfire burners；61- flame sensors；62- fire box temperature sensors；7-
Boiler；71- air compartments；72- air-introduced machines one；73- slag buckets；8- air-introduced machines two；81- prevents the hand control valve that strile-backs；82- prevents strile-bacing pneumatic
Control valve；9- gas-turbines；10- generators.
Specific embodiment
In order to which technical problem solved by the invention, technical solution and advantageous effect is more clearly understood, with reference to
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, the present invention is not limited.
In the description of the present invention, it is to be understood that term " bottom ", " top ", " on ", " interior ", the instructions such as " outer "
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplification retouched
It states rather than indicates or imply signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that indicating or implying relatively important
Property.
Term " connection " refers to combustion control system electrically be connected in each sensor element and pneumatic control valve element
Connect, realize control system panelization control or each component between installed, be fixedly connected.
With reference to shown in Fig. 1, a kind of methane boiler combustion system provided by the invention is fired including biogas combustion system and raw coal
Burning system, the biogas combustion system include biogas generating device 1, water seal arrangement 3, protection nitrogen source 4, blower fan apparatus, anti-backfire
Burner 6, boiler 7, control valve components, sensor element, duct element and gas control system 11, the biogas generating device
1st, protection nitrogen source 4 is connect by duct element with water seal arrangement 3, and the blower fan apparatus includes regulating fan 5 and air-introduced machine 28,
The regulating fan 5 is connect respectively with water seal arrangement 3 and anti-backfire burner 6, and described 6 one end of anti-backfire burner passes through pipeline
Element is connected with air-introduced machine 28, and the other end is connect with 7 upper side wall of boiler；The top of the water seal arrangement 3 is connected with safety valve 31
With pressure gauge 32；The control valve components include and biogas pneumatic control valve 27, the biogas of the connection of anti-backfire burner 6 are controlled manually
Valve 28 processed；The raw coal combustion system include run coal bin, transfer passage, coal bunker control valve, air-introduced machine 1, positioned at 7 bottom of boiler
Air compartment 71, the slag bucket 73 in portion, the coal bunker control valve include being arranged on coal bunker hand control valve 29 between run coal bin and boiler 7,
Coal bunker pneumatic control valve 210, the run coal bin are connect by conveyance conduit with boiler 7, and the bottom of the boiler 7 passes through delivery pipe
Road is connected with slag bucket 73, to discharge the cinder after burning in boiler 7；It is described control valve components include pneumatic control valve components and
Hand control valve element；The sensor element includes being arranged on the wind pressure sensor 51 of 5 front end of regulating fan and is arranged on tune
The biogas concentration detection sensor 52 of pressure fan rear end, the flame sensor 61 being connected with anti-backfire burner 6 and is arranged on pot
The fire box temperature sensor 62 of 7 madial wall of stove；The output terminal of the sensor element connects with the input terminal of gas control system 11
It connects, the output terminal of the gas control system 11 is connect with biogas pneumatic control valve 27, regulating fan 5, air-introduced machine 28.Pass through
The collocation of biogas combustion system and raw coal combustion equipment is combined, so that the variation of methane-generating pit air pressure situation, fermentation appearance
Influence to burner minimizes, and system stability is high.Protection nitrogen source 4 can blow the air of the remaining in pipeline
Exclusion is swept, prevents to explode.
The setting of wind pressure sensor 51 and biogas concentration detection sensor 52, can be when the excessively high too low, combustion of biogas pressure
Burner temperature is excessively high or when unusual condition occurs in other component, and biogas pneumatic control valve 27 is cut off rapidly, and system is protected.
The output terminal of the sensor element is connect with the input terminal of gas control system 11, can so monitor making for the system in real time
Use state.
The control valve components include the main pipeline hand-held evacuation control being arranged between biogas generating device 1 and water seal arrangement 3
Valve 21 processed, main pipeline pneumatically empty control valve 22, the accident hand-held evacuation control being arranged between water seal arrangement 3 and regulating fan 5
Valve 23, accident pneumatically empty control valve 24, are arranged on water seal arrangement 3 and protect nitrogen hand control valve 25, the nitrogen between nitrogen source 4
Pneumatic control valve 26, the anti-hand control valve 81 that strile-backs being arranged between air-introduced machine 28 and anti-backfire burner 6 are prevented strile-bacing pneumatically
Control valve 82.Since biogas belongs to flammable explosive gas (when they and air reach certain mixed proportion, it is possible to reach
Explosion limit range, the explosion ratio ranging from 5%~15% of methane), so all pneumatic operated valves of whole system are equipped with manually
Valve, i.e. bivalve group, to prevent air source power supply when something goes wrong, are manually operable.
The main pipeline pneumatically empties control valve 22, accident and pneumatically empties control valve 24, nitrogen pneumatic control valve 26, biogas
The input terminal of pneumatic control valve 27, coal bunker pneumatic control valve 210 and the anti-pneumatic control valve 82 that strile-backs with gas control system 11
Output terminal connection.In this way, when the data exception that sensor element detects, it will trigger urgent alert status, pass through combustion
Gas control system, control pneumatic control valve components will be cut off rapidly, protect whole system device.
Further, gas-turbine 9 is also associated on the top of the boiler 7, the gas-turbine 9 is connected with generator 10, institute
It states generator 10 with electric energy output end to be connected, the gas-turbine 9 is also associated with low-pressure steam channel.In this way, high steam is through gas
Turbine 9 drives the low-pressure steam after the power generation of generator 10, carries out pre-heating drying using low pressure drying channel, improves steam thermal energy
Utilization rate.
Preferably, the coal bunker control valve is three groups.
A kind of methane boiler combustion system provided by the invention passes through taking biogas combustion system and raw coal combustion equipment
With combination, so that influence of the variation of methane-generating pit air pressure situation, fermentation appearance to burner minimizes, while this hair
The methane boiler combustion system of bright offer is provided with detection sensor element, and hand pneumatic control valve has and pacifies under emergency case
The characteristics of full performance is high, the low-pressure steam of the high steam of the present apparatus after gas-turbine drives electrical power generators are dried using low pressure
Dry passage has the advantages that steam thermal energy utilization rate is high.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God and any modification made within principle, equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of methane boiler combustion system, including biogas combustion system and raw coal combustion system, it is characterised in that：The biogas
Combustion system include biogas generating device (1), water seal arrangement (3), protection nitrogen source (4), blower fan apparatus, anti-backfire burner (6),
Boiler (7), control valve components, sensor element, duct element and gas control system (11), the biogas generating device (1),
Protection nitrogen source (4) is connect by duct element with water seal arrangement (3), and the blower fan apparatus includes regulating fan (5) and air-introduced machine
Two (8), the regulating fan (5) connect respectively with water seal arrangement (3) and anti-backfire burner (6), the anti-backfire burner
(6) one end is connected by duct element with air-introduced machine two (8), and the other end is connect with boiler (7) upper side wall；The water seal arrangement
(3) top is connected with safety valve (31) and pressure gauge (32)；The control valve components include and anti-backfire burner (6) connection
Biogas pneumatic control valve (27), biogas hand control valve (28)；The raw coal combustion system include run coal bin, transfer passage,
Coal bunker control valve, air-introduced machine one (72), the air compartment (71) positioned at boiler (7) bottom, slag bucket (73), the coal bunker control valve include
Coal bunker hand control valve (29), the coal bunker pneumatic control valve (210) being arranged between run coal bin and boiler (7), the run coal bin lead to
It crosses conveyance conduit to connect with boiler (7), the bottom of the boiler (7) is connected with slag bucket (73) by conveyance conduit, to discharge
Cinder in boiler (7) after burning；The sensor element includes the wind pressure sensor (51) for being arranged on regulating fan (5) front end
With the biogas concentration detection sensor (52) for being arranged on regulating fan rear end, the flame sensing being connected with anti-backfire burner (6)
Device (61) and the fire box temperature sensor (62) for being arranged on boiler (7) madial wall；The sensor element and gas control system
(11) input terminal connection, output terminal and biogas pneumatic control valve (27), the regulating fan of the gas control system (11)
(5), air-introduced machine two (8) connects.
2. a kind of methane boiler combustion system according to claim 1, it is characterised in that：The control valve components include setting
Main pipeline hand-held evacuation control valve (21), the main pipeline put between biogas generating device (1) and water seal arrangement (3) pneumatically empty control
Valve (22) processed, the accident hand-held evacuation control valve (23) being arranged between water seal arrangement (3) and regulating fan (5), accident are pneumatically arranged
Empty control valve (24) is arranged on water seal arrangement (3) and nitrogen hand control valve (25), nitrogen between nitrogen source (4) is protected pneumatically to control
Valve (26) processed, the anti-hand control valve that strile-backs (81) being arranged between air-introduced machine two (8) and anti-backfire burner (6), the anti-gas that strile-backs
Dynamic control valve (82)；The main pipeline pneumatically empties control valve (22), accident pneumatically empties control valve (24), nitrogen pneumatic control
Valve (26), biogas pneumatic control valve (27), coal bunker pneumatic control valve (210) and it is anti-strile-back pneumatic control valve (82) with combustion gas control
The output terminal connection of system (11) processed.
3. a kind of methane boiler combustion system according to claim 1, it is characterised in that：The top of the boiler (7) is also
Gas-turbine (9) is connected with, the gas-turbine (9) is connected with generator (10), and the generator (10) is connected with electric energy output end.
4. a kind of methane boiler combustion system according to claim 3, it is characterised in that：The gas-turbine (9) is also connected with
There is low-pressure steam channel.
5. a kind of methane boiler combustion system according to claim 1, it is characterised in that：The coal bunker control valve is at least
One group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610357112.1A CN106051743B (en) | 2016-05-25 | 2016-05-25 | A kind of methane boiler combustion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610357112.1A CN106051743B (en) | 2016-05-25 | 2016-05-25 | A kind of methane boiler combustion system |
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| CN106051743A CN106051743A (en) | 2016-10-26 |
| CN106051743B true CN106051743B (en) | 2018-06-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579022B (en) * | 2018-06-07 | 2022-03-18 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and anti-backfire control method thereof |
| CN108774555A (en) * | 2018-06-20 | 2018-11-09 | 辽宁博创环保技术有限公司 | marsh gas purifying combustion system |
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| CN101042234A (en) * | 2007-04-29 | 2007-09-26 | 孙峰 | Coal and gas mixed burning boiler |
| CN201170546Y (en) * | 2008-03-06 | 2008-12-24 | 翟兆伟 | Equipment for doped burning combustible gas |
| CN101793392A (en) * | 2009-09-17 | 2010-08-04 | 岳阳纸业股份有限公司 | Method for power generation by using mash gas mixed-combustion boiler |
| CN103438436A (en) * | 2013-08-20 | 2013-12-11 | 长治市金泽生物工程有限公司 | Methane-doped combustion process for coal-fired boiler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216334A (en) * | 2008-03-12 | 2009-09-24 | Chugoku Electric Power Co Inc:The | Fuel gas feeder for thermal power plant |
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2016
- 2016-05-25 CN CN201610357112.1A patent/CN106051743B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042234A (en) * | 2007-04-29 | 2007-09-26 | 孙峰 | Coal and gas mixed burning boiler |
| CN201170546Y (en) * | 2008-03-06 | 2008-12-24 | 翟兆伟 | Equipment for doped burning combustible gas |
| CN101793392A (en) * | 2009-09-17 | 2010-08-04 | 岳阳纸业股份有限公司 | Method for power generation by using mash gas mixed-combustion boiler |
| CN103438436A (en) * | 2013-08-20 | 2013-12-11 | 长治市金泽生物工程有限公司 | Methane-doped combustion process for coal-fired boiler |
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