CN102401589A - Sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system - Google Patents
Sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system Download PDFInfo
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- CN102401589A CN102401589A CN2011103710102A CN201110371010A CN102401589A CN 102401589 A CN102401589 A CN 102401589A CN 2011103710102 A CN2011103710102 A CN 2011103710102A CN 201110371010 A CN201110371010 A CN 201110371010A CN 102401589 A CN102401589 A CN 102401589A
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- 239000003546 flue gas Substances 0.000 title claims abstract description 75
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000001704 evaporation Methods 0.000 title claims abstract description 25
- 230000008020 evaporation Effects 0.000 title claims abstract description 23
- 239000002918 waste heat Substances 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 12
- 239000012224 working solution Substances 0.000 claims abstract description 12
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000001294 propane Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 27
- 239000000779 smoke Substances 0.000 claims description 19
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 12
- 238000010612 desalination reaction Methods 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 7
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims description 6
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 claims description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 4
- 230000003416 augmentation Effects 0.000 claims description 3
- 239000001273 butane Substances 0.000 claims description 3
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 claims description 3
- 239000001282 iso-butane Substances 0.000 claims description 3
- 235000013847 iso-butane Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- OHMHBGPWCHTMQE-UHFFFAOYSA-N 2,2-dichloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)C(Cl)Cl OHMHBGPWCHTMQE-UHFFFAOYSA-N 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 229940029560 pentafluoropropane Drugs 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
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- 239000002184 metal Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
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- 230000007797 corrosion Effects 0.000 description 2
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- 238000005245 sintering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
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- 239000000835 fiber Substances 0.000 description 1
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system, belonging to the field of energy and environmental technology. The sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system comprises a heat pipe heat exchange system, a working medium circulation loop with organic Rankine cycle, a medium-low temperature flue gas discharge pipeline, a heat supply hot water loop and a cooling water loop; heat pipes are adopted to replace uptake ducts and downtake ducts; the heat pipe heat exchange system comprises the heat pipes, a flue gas heat exchanger and a boiler barrel; the flue gas heat exchanger and the boiler barrel are arranged in an integral vertical sleeve structure; the tubular flue gas heat exchanger is sheathed outside the boiler barrel; the heat pipes are arranged in the flue gas heat exchanger and the boiler barrel in an inclined way; the lower parts of the heat pipes are arranged in the flue gas heat exchanger, and the upper parts of the heat pipes are positioned in the boiler barrel; methyl benzene, trifluoro- dichloroethane, propane, pentafluoro-propane and the like can be used as circulating working medium; and softened desalted water with the volume accounting for 20% of the volume of the heat pipes can be taken as working solution of the heat pipes. The sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system has the advantages that a small space is occupied by a steam generator, the heat pipes which work effectively are short, the heat loss is low, the heat exchange efficiency is high, and the like; and the return heat quantity of exhaust gas with organic Rankine cycle can be adjusted according to the heat supply load demand.
Description
Technical field
The present invention relates to low-temperature flue gas afterheat generating system in a kind of bushing type heat pipe organic media evaporation, belong to the energy and environment technical field.
Background technology
At present; Middle low-temperature flue gas afterheat generating system adopts the tedge and the down-comer of boiler to carry out heat exchange, and it can take place to corrode and break after using certain hour because of the Long contact time with flue gas; Organic working medium is leaked in the flue; Cause the waste of organic working medium and the decline of heat exchange efficiency, and the replacing of the tedge of boiler and down-comer is very difficult, is unfavorable for the normal operation and the cost control of system.
Heat pipe is the primary element of heat exchange of heat pipe, from its outward appearance, and common pipe that fin or non-finned are arranged normally, its primary structure characteristics show in the pipe.Heat pipe is made up of shell, capillary porous material (tube core) and vapor chamber (steam channel).See that from heat transfer conditions heat pipe can be divided into evaporator section, adiabatic section and condensation segment three parts vertically.During work, evaporator section makes the hydraulic fluid evaporation in its capillary materials because of being heated, and the steam flow condensation segment makes steam condense into liquid owing to receive cooling here, and liquid leans on the capillary force effect to flow back to evaporator section along porous material again.So circulate endlessly, heat reaches the other end by an end of heat pipe.Because the latent heat of vaporization is big, so under the minimum temperature difference, just can reach condensation segment to great amount of heat from the evaporator section of heat pipe.
The tube core of heat pipe is a kind of capillary structure of being close to inner wall of tube shell, is close to inwall to reduce thermal contact resistance with multiple layer metal silk screen or fiber, cloth etc. with the lining form usually, and lining also can be made up of porous ceramics or sintering metal.The tube core of function admirable should have:
enough big capillary pumped pressure head;
less liquid flowing resistance, existing higher permeability;
good heat transfer characteristic promptly has less radially thermal resistance.Thereby; The structure of tube core has a variety of, is broadly divided into following several types:
is close to the individual layer and the multilayer web-roll core of tube wall;
sintered powder tube core, it is to be formed at the inside pipe wall face by the metal dust of certain order number or woven wire sintering;
axial slot formula tube core; It is to open axial stria at inner wall of tube shell; So that capillary pressure head and liquid reflux channel to be provided; The cross sectional shape of groove can have rectangle, and is trapezoidal etc. multiple;
combined die.General tube core often can not be taken into account capillary suction force and permeability simultaneously, and combined die can be taken into account capillary force and permeability, thereby obtains high axial heat conduction ability, and the radially thermal resistance of most of tube cores is very little.He is basically the tube core separated into two parts, and a part plays the capillary swabbing action, and a part plays the liquid reflux channel effect.
The working solution of heat pipe will have the higher latent heat of vaporization, thermal conductivity factor, suitable saturation pressure and boiling point, lower viscosity and good stable property.Hydraulic fluid also should have the bigger surface tension and the ability of wetting capillary structure, makes capillary structure and produce necessary capillary force to the working solution effect.Working solution can't produce dissolution to capillary structure and tube wall, destroys capillary structure otherwise dissolved material will be accumulated in evaporator section.
Because the advantage of heat pipe structure and working solution work; Use it for the tedge and the down-comer that substitute boiler; Not only can improve the operating efficiency of boiler greatly; Make vapor (steam) temperature higher, and can avoid the interior organic working medium pipe of flue because of receiving the sweep of gases corrosion failure for a long time, causing degradation problem under organic working medium leakage and the heat exchange efficiency.
Summary of the invention
The purpose of this invention is to provide low-temperature flue gas afterheat generating system in a kind of bushing type heat pipe organic media evaporation; Substitute the tedge and the down-comer of boiler through heat pipe; Adopting drum and flue gas heat exchange device is the bushing type heat pipe heat exchanging system of one; Reduce to take up an area of space and heat pipe and air heat exchange loss, the heat exchange efficiency of avoiding causing because of flue gas corrosion descends and refrigerant leakage etc.
Technical scheme of the present invention is: low-temperature flue gas afterheat generating system in the evaporation of bushing type heat pipe organic media comprises the heat pipe heat exchanging system, organic working medium Rankine cycle loop, middle low-temperature flue gas smoke evacuation pipeline, heat supply hot-water return and chilled(cooling) water return (CWR); The heat pipe heat exchanging system comprises heat pipe 2, flue gas heat exchange device 3 and drum 1, and flue gas heat exchange device 3 is vertical integrated sleeve structure with drum 1, and tubular type flue gas heat exchange device 3 is coated on the drum 1; Heat pipe 2 is obliquely installed in flue gas heat exchange device 3 and drum 1, and its hypomere places flue gas heat exchange device 3, epimere to place drum 1; Organic working medium Rankine cycle loop is made up of fluid reservoir 17, force (forcing) pump 13, exhaust bleeder heater 8, organic working medium circulating pump 4, drum 1, turbine 5, three-way control valve 7, hot-water heater 9, condenser 11 and pipeline that their are connected; Force (forcing) pump 13 is between heat exchanger tube enters the mouth in pipeline is connected in fluid reservoir 17 outlet and exhaust bleeder heater 8; Between circulating pump 4 heat exchanger tube in pipeline is connected in exhaust bleeder heater 8 exports and drum 1 enters the mouth; Drum 1 top is connected with turbine 5 imports through pipeline; Turbine 5 outlets are connected with hot-water heater 9 air inlets with exhaust bleeder heater 8 air inlets respectively through three-way control valve 7, and the air inlet of condenser 11 is connected with fluid reservoir 17 inlets with hot-water heater 9 gas outlets respectively through pipeline with the gas outlet; Middle low-temperature flue gas smoke exhaust pipe route flue gas heat exchange device 3, hot water preheater 14, smoke exhaust fan 16 and the pipeline formation that their are connected; Low-temperature flue gas pipeline, outlet connect hot water preheater 14 air inlets through pipeline during flue gas heat exchange device 3 inlets connect, and hot water preheater 14 gas outlets are connected with chimney with pipeline through smoke exhaust fan 16; The heat supply hot-water return constitutes by heat exchanger tube in heat exchanger tube, back water pump 15, hot user, the hot-water heater 9 in the hot water preheater 14 and with the pipeline that they connect successively; The chilled(cooling) water return (CWR) is made up of cooling tower 10, cooling water circulating pump 12, condenser 11 and pipeline that their are connected; Between heat exchanger tube inlet and cooling tower 10 outlet at bottoms, the heat exchanger tubes outlet is connected with cooling tower 10 upper end water distributors cooling water circulating pump 12 in the condenser 11 in pipeline is connected in condenser 11.
Said organic Rankine cycle fluid is toluene, trifluorobichloroethane (R123), propane (R290), pentafluoropropane (R245fa), pentane (R601), isopentane (R601a), pentane (C
5H
12), n-hexane (C
6H
14), one or more any mixture in the butane (R600), iso-butane (R600a), HFC-134a (R134a), specifically select according to actual needs.
Said heat pipe 2 is the thermal siphon that evaporator section and condensation segment are provided with the fin of augmentation of heat transfer, and its vertical tilt angle is 30～60
0(angle between thermal siphon and the vertical direction).The quantity of the angle of inclination of thermal siphon, length and fin is all specifically confirmed according to actual needs.
The quantity of working solution is 15～30% of heat pipe inner chamber volume in the said heat pipe 2, confirms according to actual needs that specifically working solution is a softening desalination water.
The present invention is according to the selected working medium kind of organic rankine cycle system, and generate output on demand and heating demand are equipped with and install equipment and pipeline and accessories such as drum, heat pipe, flue gas heat exchange device, organic working medium circulating pump, working medium force (forcing) pump, exhaust bleeder heater, turbine, excitation generator, heat supply water heater, condenser, hot water preheater, smoke exhaust fan, cooling tower; Charging amount according to the pipeline volume calculations cycle fluid of organic Rankine circulation charges into the cycle fluid metering in the circulation line.
Operation principle of the present invention is: the hypomere of heat pipe 2 (evaporator section) places flue gas heat exchange device 3; Make from boiler draw the heat of low-temperature flue gas pass to the evaporator section of heat pipe; Working solution in the heat pipe 2 is heated evaporation; Flow to the epimere (condensation segment) of heat pipe 2, at heat pipe 2 condensation segments its heat is passed to the circulation organic working medium in the drum 1, the working solution in the heat pipe 2 is cooled and flows back to evaporator section afterwards; The liquid working substance that comes out from fluid reservoir 17 is forced into evaporating pressure through working medium force (forcing) pump 13; Get into preheating in the exhaust bleeder heater 8; Low temperature organic working medium after the preheating gets into drum 1 through 4 pressurizations of organic working medium circulating pump and carries out heat exchange with heat pipe 2 condensation segments, makes the low temperature organic working medium be heated evaporation; Organic working medium is carried out carbonated drink separation in drum 1; Organic working medium steam just flows out from the top of drum 1, sends into turbine (decompressor) 5 acting output shaft works, drives excitation generator 6 generatings; Exhaust steam is then through 7 fens two-way of diversion three-way control valve: 8 preheatings of one tunnel intake and exhaust bleeder heater directly are mixed into heat supply water heater 9 heat cycles hot water with the refrigerant vapor that comes out from exhaust bleeder heater 8 from the liquid refrigerant, other a tunnel that fluid reservoir 17 comes out to be forced into through working medium force (forcing) pump 13 evaporating pressure; Get into condenser 11 condensations afterwards, flow into working medium fluid reservoir 17, accomplish once circulation; The hypomere (evaporator section) of introducing low-temperature flue gas in the boiler heat pipe 2 carries out heat exchange, gets into 14 pairs of backwater preheatings of hot water preheater afterwards, after smoke exhaust fan 16 pressurizations drain into chimney; The backwater that comes from hot user is delivered to 14 preheatings of hot water preheater through back water pump 15, gets into the heating process that hot-water heater 9 is accomplished hot water afterwards; Be delivered to the condenser 11 that organic Rankine circulates from the cooling water of cooling tower 10 through cooling water circulating pump 12, completion is condensed to the cycle fluid exhaust steam, returns cooling tower 10 water distributors afterwards, and water-collecting tray at the bottom of combining in tower after the cooling is accomplished a circulation.Through the diversion three-way control valve 7 that is provided with on the turbine exhaust steam pipeline, can regulate the exhaust backheat amount of organic Rankine circulation to the demand of heating demand according to the user.
Native system adopts heat pipe to substitute the tedge and the down-comer of boiler; Cooperating drum and flue gas heat exchange device is the casing type heat exchanging system and the organic working medium Rankine cycle loop of one; Low-temperature flue gas cogeneration and coproduction heating system in the formation compared with prior art, have following beneficial effect:
(1) adopting drum and flue gas heat exchange device is the casing type heat exchanging system of one, has dwindled the occupation of land space of steam generator greatly, has shortened effective working heat length of tube, has avoided the heat exchange of heat pipe and air, and thermal loss is significantly reduced; Simultaneously, the vertical heat pipe that is obliquely installed has also increased heat exchange area, makes heat exchange efficiency obtain further raising;
(2) strengthened the heat transfer of water in flue gas, organic working medium and the heat pipe, improved heat exchange efficiency, made the organic working medium can reach the evaporation standard very effectively;
(3) can convert middle low-temperature flue gas waste heat into high-grade electric energy safe and reliable and expeditiously, and can be provided for required heat energy such as domestic hot-water simultaneously;
(4) greatly reduced cogeneration process ring harmful substances CO
X, SO
XGeneration and discharging;
(5) be convenient to realize personalized distributed heat chp system that whole system is more abundant to the utilization of heat energy, satisfies modern technological requirement.
Description of drawings
Fig. 1 is a system schematic of the present invention.
Among the figure: the 1-drum; The 2-thermal siphon; 3-flue gas heat exchange device; The 4-working medium circulating pump; 5-turbine (decompressor); The 6-excitation generator; The 7-three-way control valve; 8-exhaust bleeder heater; The 9-hot-water heater; The 10-cooling tower; The 11-condenser; The 12-cooling water circulating pump; 13-working medium force (forcing) pump; 14-hot water preheater; The 15-back water pump; The 16-smoke exhaust fan; The 17-fluid reservoir.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is done further elaboration, but protection scope of the present invention is not limited to said content.
Embodiment 1: certain steel plant high line syllogic step heating-furnace, build low-temperature flue gas cogeneration alliance family formula system in the bushing type heat pipe organic media evaporation, and the motor power output is 10Kw, supplies 45～50 ℃ of health hot water 600l/d.
Low-temperature flue gas afterheat generating system in the evaporation of this bushing type heat pipe organic media comprises the heat pipe heat exchanging system, organic working medium Rankine cycle loop, middle low-temperature flue gas smoke evacuation pipeline, heat supply hot-water return and chilled(cooling) water return (CWR); The heat pipe heat exchanging system comprises heat pipe 2, flue gas heat exchange device 3 and drum 1, and flue gas heat exchange device 3 is vertical integrated sleeve structure with drum 1, and tubular type flue gas heat exchange device 3 is coated on the drum 1; Heat pipe 2 is the thermal siphon that evaporator section and condensation segment are provided with the fin of augmentation of heat transfer, its vertical tilt 60
0Be arranged in flue gas heat exchange device 3 and the drum 1 (hypomere places flue gas heat exchange device 3, epimere to place drum 1); Organic working medium Rankine cycle loop is made up of fluid reservoir 17, force (forcing) pump 13, exhaust bleeder heater 8, organic working medium circulating pump 4, drum 1, turbine 5, three-way control valve 7, hot-water heater 9, condenser 11 and pipeline that their are connected; Force (forcing) pump 13 is between heat exchanger tube enters the mouth in pipeline is connected in fluid reservoir 17 outlet and exhaust bleeder heater 8; Between circulating pump 4 heat exchanger tube in pipeline is connected in exhaust bleeder heater 8 exports and drum 1 enters the mouth; Drum 1 top is connected with turbine 5 imports through pipeline; Turbine 5 outlets are connected with hot-water heater 9 air inlets with exhaust bleeder heater 8 air inlets respectively through three-way control valve 7, and the air inlet of condenser 11 is connected with fluid reservoir 17 inlets with hot-water heater 9 gas outlets respectively through pipeline with the gas outlet; Middle low-temperature flue gas smoke exhaust pipe route flue gas heat exchange device 3, hot water preheater 14, smoke exhaust fan 16 and the pipeline formation that their are connected; Low-temperature flue gas pipeline, outlet connect hot water preheater 14 air inlets through pipeline during flue gas heat exchange device 3 inlets connect, and hot water preheater 14 gas outlets are connected with chimney with pipeline through smoke exhaust fan 16; The heat supply hot-water return constitutes by heat exchanger tube in heat exchanger tube, back water pump 15, hot user, the hot-water heater 9 in the hot water preheater 14 and with the pipeline that they connect successively; The chilled(cooling) water return (CWR) is made up of cooling tower 10, cooling water circulating pump 12, condenser 11 and pipeline that their are connected; Between heat exchanger tube inlet and cooling tower 10 outlet at bottoms, the heat exchanger tubes outlet is connected with cooling tower 10 upper end water distributors cooling water circulating pump 12 in the condenser 11 in pipeline is connected in condenser 11.
Working solution in the native system heat pipe 2 is the latent heat of vaporization and thermal conductivity factor is higher, saturation pressure and boiling point appropriateness, viscosity are lower, have good stability and the softening desalination water of big surface tension and wetting capillary structure ability is arranged.According to exhaust gas volumn 50000kg/h, temperature 573K, Cp1kg/ (kJ.K), heat pipe 2 adopts two phase thermal siphons, and totally 950, every pipe range 5m, go up on the hypomere 40 enhanced heat transfer fins are arranged respectively, irritate the softening desalination water that 20%V (heat pipe volume) arranged in the pipe.The heat of the low-temperature flue gas in evaporator section absorbs of the water in the heat pipe 2 and make the water evaporation in its capillary materials; The steam flow condensation segment; Organic working medium at condensation segment and drum 1 is carried out heat exchange; Make steam condense into liquid owing to receive cooling, hydraulic fluid water leans on the capillary force effect to flow back to evaporator section along porous material again.
Native system organic Rankine cycle fluid adopts trifluorobichloroethane (R123); The wall thickness of drum 1 is that 16mm, diameter are 1200mm; Decompressor 5 adopts IT10 screw decompressor, and net power output is 10Kw, and the import power pressure is 1.0MPa, 110 ℃ of temperature; Exhaust bleeder heater 8, hot-water heater 9, condenser 11 all adopt plate type heat exchanger; Working medium force (forcing) pump 13 adopts high-pressure masked pump.Press fluid reservoir 17 outlet--the orders of organic working medium force (forcing) pump 13--exhaust bleeder heater 8--organic working medium circulating pump 4--drum 1--turbine (decompressor) 5--excitation generator 6--exhaust bleeder heater 8--hot-water heater 9--condenser 11--fluid reservoir 17 imports; With copper tube and related accessory each device is connected, form organic Rankine cycle working medium loop.
The PPR hot-water line is adopted in native system heat supply water loop, presses the order of back water pump 15 outlet-hot water preheaters 14-hot-water heater 9-back water pump 15 imports, with seamless steel pipe and related accessory each device is connected, and forms the heat supply water loop.It is 20m that cooling tower 10 is selected the cooling water circular flow for use
3The low form cooling tower LBCM-20 of/h; Cooling water circulating pump is selected the 12KQL50/100-1.1/2 model for use; Cooling water pipeline; Press the order of cooling tower 10 outlet-cooling water circulating pumps 12-condenser 11-cooling tower 10 imports, adopt seamless steel pipe and related accessory that each device is connected, form the chilled(cooling) water return (CWR).
Native system is through middle low-temperature flue gas pipeline; The hypomere (evaporator section) of introducing low-temperature flue gas in the boiler heat pipe 2 carries out heat exchange; Get into 14 pairs of backwater preheatings of hot water preheater afterwards, after smoke exhaust fan 16 pressurizations drain into chimney, low-temperature flue gas smoke evacuation pipeline in the formation.Middle low-temperature flue gas smoke discharging pipe is welded with the 2mm hot rolled steel plate, and chimney is the steel design of diameter 300mm, presses the order of flue gas heat exchange device 3--hot water preheater 14-smoke exhaust fan 16-chimney, and flue gas pipeline is installed.
Native system all devices accessory is pressed Fig. 1 and is connected, and after the installation, the nitrogen that carries out pipeline purges, and organic rankine cycle system is vacuumized, and in respective line, charge into R123 and running water on request respectively.
Embodiment 2: the low-temperature flue gas afterheat generating system is identical with embodiment 1 in the evaporation of this bushing type heat pipe organic media, and the organic Rankine cycle fluid that is adopted is propane R290; Thermal siphon vertical tilt 30
0Be provided with, adopt two phase thermal siphons, totally 1000, every pipe range 4.5m, go up on the hypomere 32 enhanced heat transfer fins are arranged respectively; Irritate the softening desalination water that 25%V (heat pipe volume) arranged in the thermal siphon.
Embodiment 3: the low-temperature flue gas afterheat generating system is identical with embodiment 1 in the evaporation of this bushing type heat pipe organic media; The organic Rankine cycle fluid that is adopted is toluene, pentane R601, HFC-134a R134a, mixes by 30%, 25%, 45% volume ratio respectively; Thermal siphon vertical tilt 50
0Be provided with, adopt two phase thermal siphons, totally 900, every pipe range 5.5m, go up on the hypomere 48 enhanced heat transfer fins are arranged respectively; Irritate the softening desalination water that 30%V (heat pipe volume) arranged in the thermal siphon.
Embodiment 4: the low-temperature flue gas afterheat generating system is identical with embodiment 1 in the evaporation of this bushing type heat pipe organic media, and the organic Rankine cycle fluid that is adopted is toluene, trifluorobichloroethane (R123), propane (R290), pentafluoropropane (R245fa), pentane (R601), isopentane (R601a), pentane (C
5H
12), n-hexane (C
6H
14), butane (R600), iso-butane (R600a), HFC-134a R134a, mix by 10%, 15%, 5%, 6%, 8%, 11%, 5%, 7%, 5%, 18%, 10% volume ratio respectively; Thermal siphon vertical tilt 40
0Be provided with, adopt two phase thermal siphons, totally 1100, every pipe range 4m, go up on the hypomere 24 enhanced heat transfer fins are arranged respectively; Irritate the softening desalination water that 15%V (heat pipe volume) arranged in the thermal siphon.
Claims (5)
1. low-temperature flue gas afterheat generating system during a bushing type heat pipe organic media evaporation is given birth to is characterized in that: comprise the heat pipe heat exchanging system, organic working medium Rankine cycle loop, middle low-temperature flue gas smoke evacuation pipeline, heat supply hot-water return and chilled(cooling) water return (CWR); The heat pipe heat exchanging system comprises heat pipe (2), flue gas heat exchange device (3) and drum (1), and flue gas heat exchange device (3) and drum (1) are vertical integrated sleeve structure, and tubular type flue gas heat exchange device (3) is coated on the drum (1); Heat pipe (2) is obliquely installed in flue gas heat exchange device (3) and drum (1), and its hypomere places flue gas heat exchange device (3), epimere to place drum (1); Organic working medium Rankine cycle loop constitutes by fluid reservoir (17), force (forcing) pump (13), exhaust bleeder heater (8), organic working medium circulating pump (4), drum (1), turbine (5), three-way control valve (7), hot-water heater (9), condenser (11) and with the pipeline that their connect; Force (forcing) pump (13) is between heat exchanger tube enters the mouth in pipeline is connected in fluid reservoir (17) outlet and exhaust bleeder heater (8); Between circulating pump (4) heat exchanger tube in pipeline is connected in exhaust bleeder heater (8) exports and drum (1) enters the mouth; Drum (1) top is connected with turbine (5) import through pipeline; Turbine (5) outlet is connected with hot-water heater (9) air inlet with exhaust bleeder heater (8) air inlet respectively through three-way control valve (7), and the air inlet of condenser (11) is connected with fluid reservoir (17) inlet with hot-water heater (9) gas outlet respectively through pipeline with the gas outlet; Middle low-temperature flue gas smoke exhaust pipe route flue gas heat exchange device (3), hot water preheater (14), smoke exhaust fan (16) and the pipeline formation that their are connected; Low-temperature flue gas pipeline, outlet connect hot water preheater (14) air inlet through pipeline during flue gas heat exchange device (3) inlet connect, and hot water preheater (14) gas outlet is connected with chimney with pipeline through smoke exhaust fan (16); The heat supply hot-water return constitutes by the interior heat exchanger tube of hot water preheater (14), back water pump (15), hot user, the interior heat exchanger tube of hot-water heater (9) and with the pipeline that they connect successively; The chilled(cooling) water return (CWR) constitutes by cooling tower (10), cooling water circulating pump (12), condenser (11) and with the pipeline that their connect; Cooling water circulating pump (12) in pipeline is connected in condenser (11) between heat exchanger tube inlet and cooling tower (10) outlet at bottom, interior the heat exchanger tube of condenser (11) export with cooling tower (10) on water distributor be connected.
2. low-temperature flue gas afterheat generating system in the bushing type heat pipe organic media according to claim 1 evaporation is characterized in that: the organic Rankine cycle fluid is any mixture of any or several kinds in toluene, trifluorobichloroethane, propane, pentafluoropropane, pentane, isopentane, pentane, n-hexane, butane, iso-butane, the HFC-134a.
3. low-temperature flue gas afterheat generating system in the bushing type heat pipe organic media evaporation according to claim 1, it is characterized in that: heat pipe (2) is the thermal siphon that evaporator section and condensation segment are provided with the fin of augmentation of heat transfer, and its vertical tilt angle is 30～60
0
4. low-temperature flue gas afterheat generating system in the bushing type heat pipe organic media evaporation according to claim 3, it is characterized in that: the quantity of the interior working solution of heat pipe (2) is the 15-30% of heat pipe inner chamber volume.
5. low-temperature flue gas afterheat generating system in the bushing type heat pipe organic media evaporation according to claim 3, it is characterized in that: the working solution in the heat pipe (2) is a softening desalination water.
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| CN102787869A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | Cogeneration system utilizing recycled waste heat of low-temperature flue gas of coke oven |
| CN103334802A (en) * | 2013-06-26 | 2013-10-02 | 山东电力工程咨询院有限公司 | Thermoelectric-coupling type comprehensive energy-utilizing system based on air-cooling device and working method |
| CN103604110A (en) * | 2013-11-13 | 2014-02-26 | 安徽省金盈铝业有限公司 | Secondary-aluminum smelting afterheat power-generation device |
| CN104234763A (en) * | 2014-04-14 | 2014-12-24 | 天津市职业大学 | Organic Rankine cycle system recovering waste heat through heat pipe technology |
| CN104864376A (en) * | 2015-05-28 | 2015-08-26 | 华北水利水电大学 | Heat-pipe type falling film evaporation low-temperature waste heat utilization and water recovery equipment |
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| CN103604110A (en) * | 2013-11-13 | 2014-02-26 | 安徽省金盈铝业有限公司 | Secondary-aluminum smelting afterheat power-generation device |
| CN104234763A (en) * | 2014-04-14 | 2014-12-24 | 天津市职业大学 | Organic Rankine cycle system recovering waste heat through heat pipe technology |
| CN104864376B (en) * | 2015-05-28 | 2017-04-26 | 华北水利水电大学 | Heat-pipe type falling film evaporation low-temperature waste heat utilization and water recovery equipment |
| CN104864376A (en) * | 2015-05-28 | 2015-08-26 | 华北水利水电大学 | Heat-pipe type falling film evaporation low-temperature waste heat utilization and water recovery equipment |
| CN104929806A (en) * | 2015-06-09 | 2015-09-23 | 同济大学 | gas internal combustion engine combined heat and power generation system having organic Rankine cycle waste heat recovery power generation function |
| CN105507972A (en) * | 2016-01-11 | 2016-04-20 | 宁波中金石化有限公司 | Power generator based on waste heat of aromatic factory technique |
| CN105804818A (en) * | 2016-03-30 | 2016-07-27 | 西安交通大学 | CO2 Rankine cycle system for heavy-duty diesel engine waste heat gradient utilization |
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| CN108019247A (en) * | 2016-11-01 | 2018-05-11 | 中石化广州工程有限公司 | A kind of aromatics absorption separation waste heat reclaiming process and device |
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| CN106907200B (en) * | 2017-05-09 | 2018-12-14 | 吴联凯 | A kind of multi-cycle heat exchange electricity generation system |
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Application publication date: 20120404 |