CN100505508C - Porous dielectric ultra-adiabatic combustion temperature difference power generating method under reciprocating flouing and apparatus thereof - Google Patents
Porous dielectric ultra-adiabatic combustion temperature difference power generating method under reciprocating flouing and apparatus thereof Download PDFInfo
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- CN100505508C CN100505508C CNB2006100461094A CN200610046109A CN100505508C CN 100505508 C CN100505508 C CN 100505508C CN B2006100461094 A CNB2006100461094 A CN B2006100461094A CN 200610046109 A CN200610046109 A CN 200610046109A CN 100505508 C CN100505508 C CN 100505508C
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Abstract
A method for generating power by superadiabatic combustion temperature difference of porous media under reciprocal flow includes leading in mixed gas of air and fuel gas separately at two ends of burner in set time interval for realizing reciprocal flow combustion periodically in porous media to form ladder shaped axial temperature field in combustion chamber as mode of high in middle and near room temperature at two sides, placing cold end of PN thermocouple at middle high temperature region of burner and at inlet-outlet position to create temperature difference thermoelectric effect for generation power.
Description
Technical field
The invention belongs to low taste fuel in burning porous medium internal combustion efficient temperature-difference thermoelectric switch technology field.
Background technology
Thermo-electric generation has simple in structure, movement-less part, and advantages such as non-environmental-pollution can widely be applied to the generating of field work, remote region.At present, the problem that thermo-electric generation exists is that energy conversion efficiency is lower, for improving the generating efficiency of thermoelectric generator, various countries' scientific and technical personnel's research work focuses mostly on the material of seeking a high figure of merit (ZT), but nearly 20 years is all not break through in theory or experimentally.Air and combustion gas mixing gas are introduced from the porous media two ends respectively at a certain time interval, in porous media performance period reciprocal flow burning, in the burner porous media, axially form the trapezoidal temperature field of the high two sides temperature of medium temperature, if the PN pyrometer fire-end is placed in the high-temperature region in the middle of burner near room temperature; Importing and exporting position placement PN thermocouple cold junction, can produce the efficient temperature-difference thermoelectric effect, and then realize generating, conversion efficiency of thermoelectric is higher than conventional temperature difference electric organ far away.Electric organ is in combustion process, live gas always ceaselessly flows through the downstream area of the flame of last half period, absorption is preheated by the using waste heat from tail gas of the last half period that porous media stores, like this, the energy loss of burning heat release reaches and minimizes, strengthened burning widely, make thin and even reach low density gas and can keep burning certainly therein, like this, industrial organic exhaust gas, the colliery exhaust, rubbish landfill gas and biomass combustible gas, under normal conditions, these gas treatment need additional energy source to go to handle, and under back and forth flowing, not only can realize from keeping burning in the porous medium super-thermal insulating burning thermoelectric generator, can also utilize these low taste energy to carry out the thermoelectricity conversion.
Summary of the invention
Purpose of the present invention just provides a kind of porous dielectric ultra-adiabatic combustion temperature difference power generating method under reciprocating flouing and device thereof that low-grade energy is realized the efficient temperature-difference thermoelectric conversion of recycling.
Technical solution of the present invention is: porous medium super-thermal insulating burning temperature difference electricity generation device down back and forth flows, by heat exchanger 1, temperature-difference thermoelectric burner 2, the PN thermocouple is to 26, the periodic reverse intake and exhaust pipeline system 1112 of electromagnetically operated valve 4 controls, control system dish 6, power consumption equipment 21 constitutes, their connection successively is an air inlet pipeline 7 and just, back draught path 11,12 connect, just, back draught path 11,12 are connected with two heat exchangers 1 of burner 2 left-right symmetric, two heat exchangers 1 are connected with burner 2, just, counterblast path 11,12 are connected with gas exhaust piping 8, and airflow-reversing control system 6 is connected with two pairs of synchronous electromagnetically operated valves 4.Wherein, burner 2 by less than quenching diameter porous media 15, be embedded with temperature-difference thermoelectric couple porous media material 17, PN thermocouple to 26, ignition space 18, quartz glass combustion chamber tube 20, burner sealing graphite 14, heat-insulating material 19, burner housing 3 constitute.Be filled in combustion chamber 20 entrance ends less than quenching diameter porous media 15 symmetries, be embedded with temperature-difference thermoelectric couple porous media material 17 symmetries and be filled in the left and right sides of 20 ignition spaces 18 in the combustion chamber, less than quenching diameter porous media 15 and be embedded with between the temperature-difference thermoelectric couple porous media material 17 at interval with back-up ring 16, burner sealing graphite 14 is imported and exported labyrinth type with combustion chamber 20 and is connected, burner sealing graphite 14 is connected with heat exchanger sealing graphite 13, the combustion chamber 20 outer heat-insulating materials 19 that are surrounded by, outside the insulating material 19 is burner housing 3, and burner housing 3 is connected with heat exchanger 1 by flange 14.Heat exchanger recirculated cooling water import 9, recirculated cooling water outlet 10 is connected with storage tank.The PN thermocouple is embedded in the porous media material 26, and temperature difference heat galvanic couple cold junction 23 places porous media material to import and export the position, and temperature-difference thermoelectric couple hot junction 24 places about ignition space.The PN thermocouple links to each other with output circuit to 26, and output circuit is connected with electrical appliance 21.Ignition space 18 devices have the pulse igniter probe.
Use the method for porous medium super-thermal insulating burning temperature difference electricity generation device down that back and forth flows, open the family expenses cooling water recirculation system, make the interior cooling water that produces of heat exchanger water journey circulate, the air of stoichiometric ratio and combustion gas mixing gas enter combustion chamber 20, after the pulse igniter burning, set oscillation cycle, two pairs of electromagnetically operated valve 4 synchro switches of airflow-reversing control system 6 controls, realize that gas back and forth flowed in the pipeline inner fluid cycle, dwindle gas flow gradually and realize low density gas from keeping burning, prevent tempering less than the porous media 15 of quenching diameter.Air and combustion gas mixing gas, in porous media performance period reciprocal flow burning, in the combustion process, gas is in reciprocally accumulation of heat and the heat absorption of combustion chamber intercycle, forms axial medium temperature height in the combustion chamber, the two sides temperature trapezoidal temperature field near room temperature.PN thermocouple cold junction 23, hot junction 24 produce the big temperature difference in the combustion chamber, carry out the high efficiency thermoelectric conversion, produce electric weight and are transported to electrical appliance.
Burning and exhausting hot gas is by heat exchanger 1 recirculated cooling water, and the burning and exhausting flue-gas temperature is reduced near room temperature.
Beneficial effect and benefit that the present invention reached are:
1. use this patent combustion method and device, the fuel gas that produces in the biomass pyrolytic and (as the heating of the combustion pond) process of glowing among gas, nature and the human lives that " waste gas " that contains calorific value that produces in the weary wind of mine, the petrochemical industry course of processing, municipal refuse landfill produce etc. can be therein from keeping burning, promptly can prevent their pollution to environment, also to these gases in addition utilization.
2. use this patent combustion method and device, flameholding, the temperature inside characteristic distributions helps reducing CO and NO
xDischarging Deng pollutant.For family expenses oil liquefied gas fuel, CO has only 25ppm in the burning and exhausting, NO
xBe lower than 10ppm.
3. application this patent, air and combustion gas mixing gas, in porous media performance period reciprocal flow burning, in the combustion process, gas is in reciprocally accumulation of heat and the heat absorption of combustion chamber intercycle, forms axial medium temperature height in the combustion chamber, the two sides temperature trapezoidal temperature field near room temperature.Produce the big temperature difference in the combustion chamber between PN thermocouple cold junction, the hot junction, carry out the high efficiency thermoelectric conversion, temperature-difference thermoelectric conversion efficient is apparently higher than conventional thermoelectric generator.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is a temperature difference burner installation diagram of the present invention.
Fig. 3 is a burner of the present invention installation diagram.
Fig. 4 is a kind of porous media cell block structure chart.
Among the figure, 1. heat exchanger, 2. temperature-difference thermoelectric burner, 3. burner housing, 4. electromagnetically operated valve, 5. detection dish, 6. airflow-reversing control system, 7. combustion gas and air gas mixture import, 8. waste gas outlet, 9. recirculated cooling water import, 10. recirculated cooling water outlet, 11. air-flow forward flow pipelines, 12. air-flow reverse flow pipeline, 13. heat exchanger sealing graphite, 14. burners sealing graphite, 15. porous medias less than quenching diameter, 16. back-up ring, 17. be embedded with the porous media material of temperature-difference thermoelectric couple, 18. ignition spaces, 19. heat-insulating materials, 20. quartz glass combustion chamber tube, 21. electrical appliance, 22. ammeters, 23. temperature-difference thermoelectric couple cold junctions, 24. temperature-difference thermoelectric couple hot junction, 25. quartz glass tube, the 26.PN thermocouple is right, 27. voltmeters.
Embodiment
In a kind of porous media thin so that extremely low density gas back and forth flow and realize the device of temperature-difference thermoelectric conversion from keeping burning, by heat exchanger 1, temperature-difference thermoelectric burner 2, the PN thermocouple is to 26, the periodic reverse intake and exhaust pipeline system 1112 of electromagnetically operated valve 4 controls, control system dish 6, power consumption equipment 21 constitutes, their connection successively is an air inlet pipeline 7 and just, back draught path 11,12 connect, just, back draught path 11,12 are connected with two heat exchangers 1 of burner 2 left-right symmetric, two heat exchangers 1 are connected with burner 2, just, counterblast path 11,12 are connected with gas exhaust piping 8, and airflow-reversing control system 6 is connected with two pairs of synchronous electromagnetically operated valves 4.Wherein, burner 2 by less than quenching diameter porous media 15, be embedded with temperature-difference thermoelectric couple porous media material 17, PN thermocouple to 26, ignition space 18, quartz glass combustion chamber tube 20, burner sealing graphite 14, heat-insulating material 19, burner housing 3 constitute.Be filled in combustion chamber 20 entrance ends less than quenching diameter porous media 15 symmetries, be embedded with temperature-difference thermoelectric couple porous media material 17 symmetries and be filled in the left and right sides of 20 ignition spaces 18 in the combustion chamber, less than quenching diameter porous media 15 and be embedded with between the temperature-difference thermoelectric couple porous media material 17 at interval with back-up ring 16, burner sealing graphite 14 is imported and exported labyrinth type with combustion chamber 20 and is connected, burner sealing graphite 14 is connected with heat exchanger sealing graphite 13, the combustion chamber 20 outer heat-insulating materials 19 that are surrounded by, outside the insulating material 19 is burner housing 3, and burner housing 3 is connected with heat exchanger 1 by flange 14.Heat exchanger recirculated cooling water import 9, recirculated cooling water outlet 10 is connected with storage tank.The PN thermocouple is embedded in the porous media material 26, and temperature difference heat galvanic couple cold junction 23 places porous media material to import and export the position, and temperature-difference thermoelectric couple hot junction 24 places about ignition space.The PN thermocouple links to each other with output circuit to 26, and output circuit is connected with electrical appliance 21.Ignition space 18 devices have the pulse igniter probe.
Use the method for porous medium super-thermal insulating burning temperature difference electricity generation device down that back and forth flows, opening the family expenses cooling water recirculation system makes the interior cooling water that produces of heat exchanger water journey circulate, the air of stoichiometric ratio and combustion gas mixing gas enter combustion chamber 20, after the pulse igniter ignition, after the smooth combustion 30 seconds, setting oscillation cycle is 60 seconds, and two pairs of electromagnetically operated valve 4 synchro switches of airflow-reversing control system 6 controls realize that gas is at reciprocal flow burning of pipeline inner fluid cycle.Observe flame front width and change in location, dwindle oscillation cycle gradually, gas flow is dwindled gradually simultaneously, realizes that low density gas is from keeping burning, gas is in reciprocally accumulation of heat and the heat absorption of combustion chamber intercycle, forms axial medium temperature height in the combustion chamber, the two sides temperature trapezoidal temperature field near room temperature.PN thermocouple cold junction 23, hot junction 24 produce the big temperature difference in the combustion chamber, carry out the high efficiency thermoelectric conversion, produce electric weight and are transported to electrical appliance.
Claims (2)
1. porous medium super-thermal insulating burning temperature difference electricity generation device down back and forth flows, it is characterized in that, by heat exchanger (1), temperature-difference thermoelectric burner (2), PN temperature-difference thermoelectric couple (26), the periodic reverse intake and exhaust pipeline system's positive draft path (11) and the back draught path (12) of two pairs of electromagnetically operated valves (4) control, airflow-reversing control system (6), power consumption equipment (21) constitutes, their connection successively is air inlet pipeline (7) and positive draft path (11), back draught path (12) connects, positive draft path (11), back draught path (12) is connected with symmetrical two heat exchangers of temperature-difference thermoelectric burner (2) (1), two heat exchangers (1) are connected with temperature-difference thermoelectric burner (2), positive draft path (11), back draught path (12) is connected with gas exhaust piping (8), and airflow-reversing control system (6) is connected with described two pairs of electromagnetically operated valves (4); Wherein, temperature-difference thermoelectric burner (2) is by less than quenching diameter porous media (15), be embedded with the porous media (17) of temperature-difference thermoelectric couple, PN temperature-difference thermoelectric couple (26), ignition space (18), combustion chamber (20), burner sealing graphite (14), heat-insulating material (19) and burner housing (3) constitute, their connection successively is to be filled in combustion chamber (20) entrance end less than quenching diameter porous media (15) symmetry, porous media (17) symmetry that is embedded with the temperature-difference thermoelectric couple is filled in the left and right sides of combustion chamber (20) ignition space (18), less than quenching diameter porous media (15) and be embedded with between the porous media (17) of temperature-difference thermoelectric couple at interval with back-up ring (16), burner sealing graphite (14) is imported and exported labyrinth type with combustion chamber (20) and is connected, burner sealing graphite (14) is connected with heat exchanger sealing graphite (13), the outer heat-insulating material (19) that is surrounded by in combustion chamber (20), heat-insulating material (19) is outer to be burner housing (3), and burner housing (3) is connected with heat exchanger (1) by flange (14); Heat exchanger (1) recirculated cooling water import (9), recirculated cooling water outlet (10) are connected with storage tank; PN temperature-difference thermoelectric couple (26) is embedded in and constitutes the porous media (17) that is embedded with the temperature-difference thermoelectric couple in the porous media material, PN temperature-difference thermoelectric couple cold junction (23) places the porous media (17) that is embedded with the temperature-difference thermoelectric couple near back-up ring (16) position, and PN temperature-difference thermoelectric couple hot junction (24) places about ignition space (18); PN temperature-difference thermoelectric couple (26) links to each other with output circuit, and output circuit is connected with power consumption equipment (21); Ignition space (18) device has the pulse igniter probe.
2. use the described method of porous medium super-thermal insulating burning temperature difference electricity generation device realization temperature-difference thermoelectric conversion down that back and forth flows of claim 1, it is characterized in that, open cooling water recirculation system, make the interior cooling water that produces of heat exchanger water journey circulate, air and combustion gas mixing gas greater than the explosion limit stoichiometric ratio enter combustion chamber (20), behind the pulse igniter probe points fire burns, set oscillation cycle 5 seconds-120 seconds, airflow-reversing control system (6) control described two pairs of electromagnetically operated valves (4) synchro switch, (20) intercycle back and forth flows in the combustion chamber to realize mist, observe flame front width and change in location, dwindle oscillation cycle gradually, gas flow is dwindled gradually simultaneously, thereby realizes that low density gas from keeping burning, prevents tempering less than quenching diameter porous media (15); Air and combustion gas mixing gas, in combustion chamber (20) performance period reciprocal flow burning, in the combustion process, mist is reciprocally accumulation of heat and the heat absorption of (20) intercycle in the combustion chamber, forms in the combustion chamber (20) axial medium temperature height, the two sides temperature trapezoidal temperature field near room temperature; Produce the big temperature difference in the combustion chamber (20) between PN temperature-difference thermoelectric couple cold junction (23) and the PN temperature-difference thermoelectric couple hot junction (24), carry out the high efficiency thermoelectric conversion, produce electric weight and be transported to power consumption equipment (21), temperature-difference thermoelectric conversion efficient is apparently higher than conventional thermoelectric generator; The burning and exhausting flue gas is by the cooling of heat exchanger (1) recirculated cooling water, and temperature is reduced near room temperature 30
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| CN101275744B (en) * | 2007-03-28 | 2011-01-26 | 中国科学院大连化学物理研究所 | Apparatus for comprehensively utilizing coal mine to ventilate mash gas |
| CN101908846B (en) * | 2009-06-06 | 2015-04-01 | 张鹏 | Method and system for generating through underground temperature difference |
| CN102829476A (en) * | 2011-06-13 | 2012-12-19 | 陈光宁 | Constant temperature difference source device capable of controlling combustion of fuel oil and method for generating constant temperature difference |
| CN104923073B (en) * | 2015-05-26 | 2017-03-15 | 上海大学 | The processing meanss that light degradation waste gas occurs using waste gas residual heat |
| CN107919818A (en) * | 2018-01-03 | 2018-04-17 | 沈阳工程学院 | A kind of temperature difference electricity generation device using porous medium super-thermal insulating burning |
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Non-Patent Citations (4)
| Title |
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| 多孔介质往复流动燃烧的一维数值模拟. 马世虎，解茂昭，邓洋波.热能动力工程，第19卷第4期. 2004 |
| 多孔介质往复流动燃烧的一维数值模拟. 马世虎，解茂昭，邓洋波.热能动力工程，第19卷第4期. 2004 * |
| 温差发电的热力过程研究及材料的塞贝克系数测定. 贾磊，胡芃，陈则韶.中国工程科学，第7卷第12期. 2005 |
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