CN102913890B - Pulsation porous medium combustion power generation system - Google Patents
Pulsation porous medium combustion power generation system Download PDFInfo
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- CN102913890B CN102913890B CN201210426197.6A CN201210426197A CN102913890B CN 102913890 B CN102913890 B CN 102913890B CN 201210426197 A CN201210426197 A CN 201210426197A CN 102913890 B CN102913890 B CN 102913890B
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Abstract
A pulsation porous medium combustion power generation system comprises a pulsation porous medium combustor and a power generation system with a screw expansion machine, wherein the pulsation porous medium combustor comprises a gas inlet pipe, a membrane valve, a porous medium combustion chamber, a non-medium combustion chamber, a smoke pipe, foamed ceramic, a spirally winding heat exchange pipe, a guide sleeve pipe, a preheater and an exhaust pipe; the membrane valve is positioned above the gas inlet pipe; the porous medium combustion chamber and the non-medium combustion chamber are positioned between the membrane valve and the smoke pipe; the smoke pipe is wrapped by the foamed ceramic with heat-conducting effect; the spirally winding heat exchange pipe is positioned in the foamed ceramic; the guide sleeve pipe is positioned behind the smoke pipe; the preheater is positioned behind the guide sleeve pipe; the preheater is connected with the exhaust pipe; the power generation system with the screw expansion machine comprises a water storage tank, a water processor, a boiler barrel, the screw expansion machine and a power generator; the water storage tank is used for storing working medium water; the boiler barrel is used for separating steam from liquid; the screw expansion machine is used for converting heat energy into mechanical energy; and the power generator is used for converting the mechanical energy into electric energy. The pulsation porous medium combustion power generation system generates electricity by utilizing combustion heat and low-temperature waste heat of low-heat-value gas, and is reasonable in single machine capacity matching, convenient to operate, energy-saving, environment-friendly and good in using effect.
Description
Technical field
The present invention relates to a kind of pulsation multi-hole medium combustion electricity generation system, be particularly useful for to the low-BTU gas such as coal mine light concentration mash gas, low concentration natural gas burn and make full use of reaction heat, waste heat carries out the conversion of high efficiency thermoelectric.
Background technology
Pulsating combusting device is under certain acoustic condition control, is operated in specially the burner under acoustics pulse state.In the middle of the 19th century, professor Li Kangte finds " to the flame of music sensitivity ", and people are familiar with the beginning of intermittent combustion.In these more than hundred years, occurred various dissimilar pulsating combusting devices, current most widely used pulsating combusting device is Hai Ermuhuoci type pulsating combusting device, and it is the principle work of the Hai Ermuhuoci resonator based on acoustics.But pulsating combusting device has a lot of shortcomings, as even in the temperature distributing disproportionation of its combustion chamber, be unfavorable for the utilization of heat; Gas flow rate is large, is not easy to control, and is conducive to thus burner accumulation of heat, and efficiency of combustion is unstable, and burning load is low; When burning, there are larger noise and vibration problem.
In electricity generation system, conventional generator is gas turbine or steam turbine.The power of these two kinds of traditional type generator outputs is large, high to the quality requirements of fuel.Coal mine light concentration mash gas, the such low-BTU gas of low concentration natural gas, not only concentration is very low, and the fluctuation range of concentration is large, and conventional electric generators is cisco unity malfunction usually.So for utilizing low-BTU gas, present electricity generation system is usually introduced screw decompressor the mechanical energy of low-BTU gas generation is converted into electric energy, the power bracket of this decompressor is usually at 1kW ~ 1000kW.Such as the patent 201010501852.0 of having applied for, power generation part wherein well utilizes the advantage of screw decompressor, but, recirculated water part wherein, do not make full use of the waste heat of flue gas, cause the little low-BTU gas energy of energy density own to run off, reduce energy utilization efficiency.Meanwhile, the heat of flue gas partial runs off, and can cause environmental thermal pollution serious, is unfavorable for environmental protection.
Summary of the invention
Technical problem: the object of the invention is to overcome the deficiency in prior art, provide a kind of simple in structure, can make full use of waste heat, easy to operate, energy-conserving and environment-protective, effective pulsation multi-hole medium combustion electricity generation system.
Technical scheme: pulsation multi-hole medium combustion electricity generation system of the present invention, comprise burner, connect the drum of burner, boiler drum bottom is connected with respectively heat exchanger water circulating pump and drum feed pump, the top of drum is connected with screw decompressor through pipeline, screw decompressor is connected with generator, the bottom of screw decompressor is connected with condenser, condenser delivery port is connected with storage tank, the entrance of storage tank is connected with the hydrotreater being connected with feed pump through pipeline, the porch of described drum feed pump is connected with preheater, preheater bottom water inlet is connected with storage tank through pipeline, described burner is pulsation porous media combustor, pulsation porous media combustor comprises burner shell, on burner shell inwall, be attached with heat-insulation layer, in heat-insulation layer, be provided with the inner core that multi-hole medium combustion chamber is housed, inner core top is provided with the igniter penetrating in burner shell, the bottom of burner shell is provided with the air inlet pipe that is communicated with inner core, the porch of air inlet pipe is provided with diaphragm valve, on the fume pipe that burner shell top connects, be wound with snakelike heat exchange tube, fume pipe and burner shell junction are wound with heat-insulation layer, snakelike heat exchange tube outside is provided with the guide thimble being connected with preheater, in guide thimble, be filled with and be attached to snakelike heat exchange tube foamed ceramics heat-conducting layer around, the arrival end of described snakelike heat exchange tube connects heat exchanger water circulating pump through pipeline, the port of export of snakelike heat exchange tube connects drum through pipeline, and preheater is connected in the afterbody of guide thimble mutually.
Described multi-hole medium combustion chamber is SiC foamed ceramics multi-hole medium combustion chamber or Al
2o
3foamed ceramics multi-hole medium combustion chamber; Described condenser is water cooled condenser or air cooled condenser; Described screw decompressor is single-screw decompressor or double-screw type decompressor.
Beneficial effect: the present invention forms pulsation porous media combustor by porous media is combined with pulsating combusting device, further expanded natural gas, coal mine gas etc. and certainly maintained the concentration limit of smooth combustion and reduce pollutant emission, its system architecture is simple, can make full use of waste heat, easy to operate, energy-conserving and environment-protective, effective.Mainly contain following advantage:
1, adopt pulsation porous media combustor can overcome pulsating combusting device deficiency technically, new pulsation porous media combustor can be expanded the gas such as natural gas, coal mine gas from the concentration limit that maintains smooth combustion, reduce the pollutant discharge amount in combustion process, improve efficiency of combustion;
2, in fume pipe outside around the columned foamed ceramics heat-conducting layer of arranging, and the heat exchanger tube of the spiral winding that distributes in inside, has improved heat exchange efficiency greatly, and allows heat exchange stable and uniform more;
3, in guide thimble outlet, preheater is set and can makes full use of fume afterheat raising efficiency of combustion, also reduced because waste heat discharges the thermal pollution causing, energy-conserving and environment-protective simultaneously;
4, using the large screw decompressor of single-machine capacity excursion as heat energy and the device of mechanical energy conversion, the fluctuation of the heat energy size of bringing can overcome with variable concentrations gas combustion time, be particularly useful for the low-BTU gas such as the extremely unsettled coal mine light concentration mash gas of concentration, natural gas, the mismatch problem of heat energy size when having avoided that traditional steam engine single-machine capacity is large, system architecture is complicated and having burnt with light concentration gas;
5, the selection water-cooled that the condenser of electricity generation system can be suited measures to local conditions or air-cooled; Working-medium water can adopt and recycle and the suitable mode of moisturizing, has effectively saved water resource and has taken full advantage of the waste heat of discharging in water.
Accompanying drawing explanation
Fig. 1 is system construction drawing of the present invention.
In figure: 1-air inlet pipe, 2-diaphragm valve, 3-burner shell, 4-heat-insulation layer, 5-fume pipe, 6-heat exchanger tube, 7-foamed ceramics heat-conducting layer, 8-guide thimble, 9-heat exchanger water circulating pump, 10-drum, 11-drum feed pump, 12-screw decompressor, 13-generator, 14-condenser, 15-feed pump, 16-hydrotreater, 17-storage tank, 18-blast pipe, 19-preheater, 20-igniter, 21-inner core, 22-porous media matter combustion chamber.
The specific embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Pulsation multi-hole medium combustion electricity generation system of the present invention, is mainly made up of burner, heat-exchanger rig, preheating device, circular water treating system and the screw decompressor 12 being connected with generator 13; Described burner is pulsation porous media combustor, pulsation porous media combustor comprises burner shell 3, on burner shell 3 inwalls, be attached with heat-insulation layer 4, in heat-insulation layer 4, be provided with the inner core 21 that multi-hole medium combustion chamber 22 is housed, inner core 21 tops are provided with the igniter 20 penetrating in burner shell 3, and described multi-hole medium combustion chamber 22 is SiC foamed ceramics multi-hole medium combustion chamber or Al
2o
3foamed ceramics multi-hole medium combustion chamber.The bottom of burner shell 3 is provided with the air inlet pipe 1 that is communicated with inner core 21, and the porch of air inlet pipe 1 is provided with diaphragm valve 2; Described heat-exchanger rig comprises the fume pipe 5 that burner shell 3 tops connect, the snakelike heat exchange tube 6 being wound around on fume pipe 5, snakelike heat exchange tube 6 outsides are provided with the guide thimble 8 being connected with preheater 19, be filled with and be attached to snakelike heat exchange tube 6 foamed ceramics heat-conducting layer 7 around in guide thimble 8; Described preheating device comprises the preheater 19 that guide thimble 8 afterbodys connect, the blast pipe 18 that preheater 19 right-hand members connect, the drum feed pump 11 that preheater 19 upper ends connect through pipeline, drum feed pump 11 upper ends are connected with drum 10 right lower quadrants that are being connected burner through pipeline, the heat exchanger water circulating pump 9 that drum 10 bottoms connect.The top of drum 10 is connected with screw decompressor 12 through pipeline, and screw decompressor 12 is connected with generator 13, and described screw decompressor 12 is single-screw decompressor or double-screw type decompressor; Described circular water treating system comprises the storage tank 17 being connected through pipeline with preheater 19 bottoms, the condenser 14 that storage tank 17 right lower quadrants connect, the hydrotreater 16 that the upper entrance place of storage tank 17 connects, the feed pump 15 that hydrotreater 16 right-hand members connect through pipeline, described condenser 14 is water cooled condenser or air cooled condenser.
Operation principle: pre-mixed combustion gas enters in multi-hole medium combustion chamber 22 from diaphragm valve 2, combustion gas takes fire after being lighted by igniter 20, burning is accompanied by heat release makes the pressure rise in combustion chamber, pressure rise is supplied with when pressure to being greater than pre-mixing gas combustion, diaphragm valve 2 cuts out, the hot combustion gas that burning produces can not be flow backwards by valve, the discharge of flowing and expand along fume pipe 5 to guide thimble 8, pressure in combustion chamber declines thereupon, pressure drop is to making formation negative pressure in combustion chamber, and when pressure drop arrives lower than the inlet pressure of pre-mixing gas combustion, diaphragm valve 2 is opened again, fresh pre-mixing gas combustion reenters combustion chamber, lighted by indoor waste heat, carry out thus burn cycle, the water that feed pump 15 extracts and flowing in storage tank 17 through the working-medium water of condenser 14, through flowing into drum 10 through drum feed pump 11 after preheater 18, working-medium water in drum 10 provides in power inflow snakelike heat exchange tube 6 and carries out heat exchange through heat exchanger water circulating pump 9, and some working-medium water vaporization, again flow into and in drum 10, carry out vapor-liquid separation, it is mechanical energy by thermal power transfer that HTHP working-medium water steam flow after separation enters in screw decompressor 12, and by generator 13, mechanical energy is converted to electric energy, the low energy working medium steam of flowing through after screw decompressor 12 again flows in storage tank 17 after condenser 14 is cooling, make thus working-medium water recycle.
Claims (4)
1. a pulsation multi-hole medium combustion electricity generation system, comprise burner, connect the drum (10) of burner, drum (10) bottom is connected with respectively heat exchanger water circulating pump (9) and drum feed pump (11), the top of drum (10) is connected with screw decompressor (12) through pipeline, screw decompressor (12) is connected with generator (13), the bottom of screw decompressor (12) is connected with condenser (14), condenser (14) delivery port is connected with storage tank (17), the entrance of storage tank (17) is connected with the hydrotreater (16) being connected with feed pump (15) through pipeline, it is characterized in that: the porch of described drum feed pump (11) is connected with preheater (19), preheater (19) bottom water inlet is connected with storage tank (17) through pipeline, described burner is pulsation porous media combustor, pulsation porous media combustor comprises burner shell (3), on burner shell (3) inwall, be attached with heat-insulation layer (4), in heat-insulation layer (4), be provided with the inner core (21) that multi-hole medium combustion chamber (22) are housed, inner core (21) top is provided with the igniter (20) penetrating in burner shell (3), the bottom of burner shell (3) is provided with the air inlet pipe (1) that is communicated with inner core (21), the porch of air inlet pipe (1) is provided with diaphragm valve (2), on the fume pipe (5) that burner shell (3) top connects, be wound with snakelike heat exchange tube (6), fume pipe (5) is wound with heat-insulation layer (4) with burner shell (3) junction, snakelike heat exchange tube (6) outside is provided with the guide thimble (8) being connected with preheater (19), in guide thimble (8), be filled with and be attached to snakelike heat exchange tube (6) foamed ceramics heat-conducting layer (7) around, the arrival end of described snakelike heat exchange tube (6) connects heat exchanger water circulating pump (9) through pipeline, the port of export of snakelike heat exchange tube (6) connects drum (10) through pipeline, preheater (19) is connected in the afterbody of guide thimble (8) mutually.
2. pulsation multi-hole medium combustion electricity generation system according to claim 1, is characterized in that: described multi-hole medium combustion chamber (22) is SiC foamed ceramics multi-hole medium combustion chamber or Al
2o
3foamed ceramics multi-hole medium combustion chamber.
3. pulsation multi-hole medium combustion electricity generation system according to claim 1, is characterized in that: described condenser (14) is water cooled condenser or air cooled condenser.
4. pulsation multi-hole medium combustion electricity generation system according to claim 1, is characterized in that: described screw decompressor (12) is single-screw decompressor or double-screw type decompressor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210426197.6A CN102913890B (en) | 2012-10-31 | 2012-10-31 | Pulsation porous medium combustion power generation system |
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| CN201210426197.6A CN102913890B (en) | 2012-10-31 | 2012-10-31 | Pulsation porous medium combustion power generation system |
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| CN102913890B true CN102913890B (en) | 2014-05-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104500158B (en) * | 2014-12-02 | 2016-09-07 | 中国矿业大学 | A kind of low concentration coal-bed gas or gas electricity system |
| KR102310418B1 (en) * | 2017-04-06 | 2021-10-07 | 현대자동차 주식회사 | Intake manifold and engine including the same |
| CN107489468A (en) * | 2017-09-18 | 2017-12-19 | 贵州盘江煤层气开发利用有限责任公司 | A kind of low-concentration gas power generation system based on intermittent combustion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2781928B2 (en) * | 1989-12-02 | 1998-07-30 | パロマ工業株式会社 | Pulse combustor |
| CN201747418U (en) * | 2010-07-19 | 2011-02-16 | 刘冠廷 | Generator set of screw expansion power machine |
| CN102011605B (en) * | 2010-09-27 | 2012-10-24 | 中国矿业大学 | Low-concentration gas and ventilation air methane thermal oxidation generating system and method of coal mine |
| CN202452489U (en) * | 2012-01-18 | 2012-09-26 | 中国矿业大学 | Pulse type porous medium burner |
| CN202902246U (en) * | 2012-10-31 | 2013-04-24 | 中国矿业大学 | Pulsation porous medium combustion power generation system |
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