CN102401592A - Power generation system for waste heat of medium and low temperature flue gas with cylinder organic medium evaporation - Google Patents
Power generation system for waste heat of medium and low temperature flue gas with cylinder organic medium evaporation Download PDFInfo
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- CN102401592A CN102401592A CN2011103710579A CN201110371057A CN102401592A CN 102401592 A CN102401592 A CN 102401592A CN 2011103710579 A CN2011103710579 A CN 2011103710579A CN 201110371057 A CN201110371057 A CN 201110371057A CN 102401592 A CN102401592 A CN 102401592A
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- 239000003546 flue gas Substances 0.000 title claims abstract description 68
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000001704 evaporation Methods 0.000 title claims abstract description 23
- 230000008020 evaporation Effects 0.000 title claims abstract description 21
- 239000002918 waste heat Substances 0.000 title abstract description 3
- 238000010248 power generation Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000012530 fluid Substances 0.000 claims abstract description 27
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000498 cooling water Substances 0.000 claims abstract description 14
- 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
- 239000000779 smoke Substances 0.000 claims description 19
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 239000012224 working solution Substances 0.000 claims description 11
- 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
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 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
- 230000003416 augmentation Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 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
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 230000001172 regenerating effect Effects 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
- 239000008400 supply water Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000011148 porous material 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
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- 238000009835 boiling Methods 0.000 description 2
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- 239000003507 refrigerant Substances 0.000 description 2
- 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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- 238000006731 degradation reaction Methods 0.000 description 1
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Abstract
The invention provides a power generation system for waste heat of medium and low temperature flue gas with cylinder organic medium evaporation, and belongs to the technical field of energy and environment. The invention comprises a heat pipe system, a working medium circulation loop of organic Rankine cycle, a medium and low temperature flue gas exhausting pipeline, a heating hot water loop and a cooling water loop, wherein an ascending pipe and a descending pipe of a boiler are replaced by heat pipes, the flue gas heat exchanger and the boiler cylinder are an integrally cylindrical structure, and is separated to the upper boiler cylinder and the lower flue gas heat exchanger by two layers of insulation partition, the lower end of the heat pipe is arranged in flue gas heat exchanger, the upper end is arranged in the boiler barrel, toluene, dichlorotrifluoroethane, propane and pentafluoropropane are used as working medium, and 20% volume of the softening desalted water is used as the heat pipe working fluid. The invention has advantages of little space occupation, small heat exchange between heat pipe and air, high efficiency of heat exchange, convenient heat pipe replacement, being capable of avoiding the heat exchanger pipe corrosion and the working medium leakage and other advantages, and being capable of adjusting the exhaust regenerative heat of organic Rankine cycle according to the heating load demands.
Description
Technical field
The present invention relates to low-temperature flue gas afterheat generating system in a kind of drum type brake organic media evaporation, belong to the energy and environment technical field.
Background technology
At present; Middle low-temperature flue gas afterheat generating system carries out heat exchange through the tedge and the down-comer of boiler, 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 drum type brake organic media evaporation; Employing is divided into the integrated cylinder-like structure of drum and flue gas heat exchange device through dividing plate; And substitute the tedge and the down-comer of boiler with heat pipe, solve the boiler heat exchange pipeline and be subject to problems such as sweep of gases burn into heat exchange efficiency is not high.
Solving the scheme that technical problem of the present invention adopts is: low-temperature flue gas afterheat generating system in the evaporation of drum type brake organic media; 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 4 and the drum 1 that substitutes boiler tedge and down-comer; Flue gas heat exchange device 4 is horizontally disposed integrated cylinder-like structure with drum 1; Be divided into the drum 1 on top and the flue gas heat exchange device 4 of bottom by two-layer thermal baffle 3 wherein; Heat pipe 2 vertical being arranged in the integrated tubular structure, its hypomere places flue gas heat exchange device 4, epimere to place drum 1; Organic working medium Rankine cycle loop is made up of fluid reservoir 18, working medium force (forcing) pump 14, exhaust bleeder heater 9, organic working medium circulating pump 5, drum 1, turbine 6, three-way control valve 8, hot-water heater 10, condenser 12 and pipeline that their are connected; Working medium force (forcing) pump 14 is between heat exchanger tube enters the mouth in pipeline is connected in fluid reservoir 18 outlet and exhaust bleeder heater 9; Between circulating pump 5 heat exchanger tube in pipeline is connected in exhaust bleeder heater 9 exports and drum 1 enters the mouth; Drum 1 top is connected with turbine 6 imports through pipeline; Turbine 6 outlets are connected with hot-water heater 10 air inlets with exhaust bleeder heater 9 air inlets respectively through three-way control valve 8, and the air inlet of condenser 12 is connected with fluid reservoir 18 inlets with hot-water heater 10 gas outlets respectively through pipeline with the gas outlet; Middle low-temperature flue gas smoke exhaust pipe route flue gas heat exchange device 4, hot water preheater 15, smoke exhaust fan 17 and the pipeline formation that their are connected; Low-temperature flue gas pipeline, outlet connect hot water preheater 15 air inlets through pipeline during flue gas heat exchange device 4 inlets connect, and hot water preheater 15 gas outlets are connected with chimney with pipeline through smoke exhaust fan 17; The heat supply hot-water return constitutes by heat exchanger tube in heat exchanger tube, back water pump 16, hot user, the hot-water heater 10 in the hot water preheater 15 and with the pipeline that they connect successively; The chilled(cooling) water return (CWR) is made up of cooling tower 11, cooling water circulating pump 13, condenser 12 and pipeline that their are connected; Between heat exchanger tube inlet and cooling tower 11 outlet at bottoms, the heat exchanger tubes outlet is connected with cooling tower 11 upper end water distributors cooling water circulating pump 13 in the condenser 12 in pipeline is connected in condenser 12.
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), any mixture of any or several kinds in the butane (R600), iso-butane (R600a), HFC-134a (R134a), specifically select according to actual needs.
Said heat pipe 2 is two phase thermal siphons, and its evaporator section and condensation segment are provided with the fin of augmentation of heat transfer, and the quantity of the length of thermal siphon and last fin thereof is 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.
Dashing between the said two-layer dividing plate 3 has air, the performance heat-blocking action.
Native system 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.
The operation principle of native system is: the hypomere of heat pipe 2 (evaporator section) places flue gas heat exchange device 4; Make from boiler draw the heat of low-temperature flue gas pass to the evaporator section of heat pipe 2; Working solution in the heat pipe 2 is heated evaporation; Flow to the epimere (condensation segment) of heat pipe 2, at the condensation segment of heat pipe 2 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 18 is forced into evaporating pressure through working medium force (forcing) pump 14; Get into preheating in the exhaust bleeder heater 9, the low temperature organic working medium after the preheating, the condensation segment that gets into drum 1 and heat pipe 2 through 5 pressurizations of organic working medium circulating pump carries out heat exchange; Make low temperature organic working medium heating evaporation and in drum 1, carry out carbonated drink separation; Organic working medium steam flows out from drum 1 top, sends into turbine (decompressor) 6 acting output shaft works, drives excitation generator 7 generatings; Exhaust steam then divides two-way through diversion three-way control valve: 9 preheatings of one tunnel intake and exhaust bleeder heater are from reservoir come out to be forced into through working medium force (forcing) pump 14 liquid refrigerant of evaporating pressure; Other one the tunnel directly is mixed into heat supply water heater 10 heat cycles hot water with the refrigerant vapor that comes out from exhaust bleeder heater 9; Get into condenser 12 condensations afterwards; Flow into working medium fluid reservoir 18, accomplish once circulation.After heat exchange is carried out in the lower end (evaporator section) that gets into heat pipe 2 from the middle low-temperature flue gas of boiler, get into 15 pairs of backwater of hot water preheater and carry out preheating, drain into chimney through smoke exhaust fan 17 pressurizations then; Come self-heating user's backwater to be delivered to 15 preheatings of hot water preheater, get into the heating process that hot-water heater 10 is accomplished hot water afterwards through back water pump 16; Cooling water from cooling tower 11 is delivered to the condenser 12 that organic Rankine circulates through cooling water circulating pump 13, and completion is condensed to the cycle fluid exhaust steam, returns cooling tower 11 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 8 that is provided with on the turbine exhaust steam pipeline, can regulate the exhaust backheat amount of organic Rankine circulation according to the demand of user to heating demand.
Native system adopts heat pipe to substitute the tedge and the down-comer of boiler, and cooperating flue gas heat exchange device and drum is the drum type brake heat pipe heat exchanging system and the organic working medium Rankine cycle loop of one, compared with prior art, has following beneficial effect:
(1) can avoid the tedge of boiler to corrode because of contacting with flue gas all the year round, and cause the problem that working medium is revealed and the thermal efficiency descends with down-comer;
(2) strengthened the heat transfer of water in flue gas, organic working medium and the heat pipe, helped the raising of heat exchange efficiency, made the organic working medium can reach the evaporation standard very effectively;
(3) adopting boiler and flue gas heat exchange device is the steam generator cylindraceous of one, has dwindled generator greatly and has taken up space, and shortens the effectively length of work heat pipe, avoids the heat exchange of heat pipe and surrounding air, helps reducing thermal loss;
(4) can safe and reliable and convert middle low-temperature flue gas waste heat into the high-grade electric energy expeditiously in, required heat energy such as domestic hot-water are provided;
(5) greatly reduced cogeneration process ring harmful substances CO
X, SO
XGeneration and discharging;
(6) be convenient to realize personalized distributed heat chp system, satisfy modern technological requirement.
Description of drawings
Fig. 1 is a system schematic of the present invention.
Among the figure: the 1-drum; The 2-heat pipe; The 3-dividing plate; 4-flue gas heat exchange device; The 5-working medium circulating pump; 6-turbine (decompressor); The 7-excitation generator; The 8-three-way control valve; 9-exhaust bleeder heater; The 10-hot-water heater; The 11-cooling tower; The 12-condenser; The 13-cooling water circulating pump; 14-working medium force (forcing) pump; 15-hot water preheater; The 16-back water pump; The 17-smoke exhaust fan; The 18-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 drum type brake 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 drum type brake 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 4 and the drum 1 that substitutes boiler tedge and down-comer; Flue gas heat exchange device 4 is horizontally disposed integrated cylinder-like structure with drum 1; Be divided into the drum 1 on top and the flue gas heat exchange device 4 of bottom by two-layer thermal baffle 3 wherein; Heat pipe 2 vertical being arranged in the integrated tubular structure, its hypomere places flue gas heat exchange device 4, epimere to place drum 1; Organic working medium Rankine cycle loop is made up of fluid reservoir 18, working medium force (forcing) pump 14, exhaust bleeder heater 9, organic working medium circulating pump 5, drum 1, turbine 6, three-way control valve 8, hot-water heater 10, condenser 12 and pipeline that their are connected; Working medium force (forcing) pump 14 is between heat exchanger tube enters the mouth in pipeline is connected in fluid reservoir 18 outlet and exhaust bleeder heater 9; Between working medium circulating pump 5 heat exchanger tube in pipeline is connected in exhaust bleeder heater 9 exports and drum 1 enters the mouth; Drum 1 top is connected with turbine 6 imports through pipeline; Turbine 6 outlets are connected with hot-water heater 10 air inlets with exhaust bleeder heater 9 air inlets respectively through three-way control valve 8, and the air inlet of condenser 12 is connected with fluid reservoir 18 inlets with hot-water heater 10 gas outlets respectively through pipeline with the gas outlet; Middle low-temperature flue gas smoke exhaust pipe route flue gas heat exchange device 4, hot water preheater 15, smoke exhaust fan 17 and the pipeline formation that their are connected; Low-temperature flue gas pipeline, outlet connect hot water preheater 15 air inlets through pipeline during flue gas heat exchange device 4 inlets connect, and hot water preheater 15 gas outlets are connected with chimney with pipeline through smoke exhaust fan 17; The heat supply hot-water return constitutes by heat exchanger tube in heat exchanger tube, back water pump 16, hot user, the hot-water heater 10 in the hot water preheater 15 and with the pipeline that they connect successively; The chilled(cooling) water return (CWR) is made up of cooling tower 11, cooling water circulating pump 13, condenser 12 and pipeline that their are connected; Between heat exchanger tube inlet and cooling tower 11 outlet at bottoms, the heat exchanger tubes outlet is connected with cooling tower 11 upper end water distributors cooling water circulating pump 13 in the condenser 12 in pipeline is connected in condenser 12.
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 6 adopts IT10 screw decompressor, and net power output is 10Kw, and the import power pressure is 1.0MPa, 110 ℃ of temperature; Exhaust bleeder heater 9, hot-water heater 10, condenser 12 all adopt plate type heat exchanger; Working medium force (forcing) pump 14 adopts high-pressure masked pump.Press fluid reservoir 18 outlet--the orders of organic working medium force (forcing) pump 14--exhaust bleeder heater 9--organic working medium circulating pump 5--drum 1--turbine (decompressor) 6--excitation generator 7--exhaust bleeder heater 9--hot-water heater 10--condenser 12--fluid reservoir 18 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 16 outlet-hot water preheaters 15-hot-water heater 10-back water pump 16 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 11 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 11 outlet-cooling water circulating pumps 13-condenser 12-cooling tower 11 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; Introduce low-temperature flue gas in the boiler lower end (evaporator section) of heat pipe 2 and carry out heat exchange; Get into 15 pairs of backwater preheatings of hot water preheater afterwards, after smoke exhaust fan 17 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 4--hot water preheater 15-smoke exhaust fan 17-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 drum type brake 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 this drum type brake organic media evaporation, and 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 drum type brake 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 (6)
1. low-temperature flue gas afterheat generating system during a drum type brake organic media evaporates 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 (4) and drum (1); Flue gas heat exchange device (4) and drum (1) are horizontally disposed integrated cylinder-like structure; Be divided into the drum (1) on top and the flue gas heat exchange device (4) of bottom by two-layer thermal baffle (3) wherein; Heat pipe (2) is vertical to be arranged in the integrated tubular structure, and its hypomere places flue gas heat exchange device (4), epimere to place drum (1); Organic working medium Rankine cycle loop constitutes by fluid reservoir (18), force (forcing) pump (14), exhaust bleeder heater (9), organic working medium circulating pump (5), drum (1), turbine (6), three-way control valve (8), hot-water heater (10), condenser (12) and with the pipeline that their connect; Force (forcing) pump (14) is between heat exchanger tube enters the mouth in pipeline is connected in fluid reservoir (18) outlet and exhaust bleeder heater (9); Between circulating pump (5) heat exchanger tube in pipeline is connected in exhaust bleeder heater (9) exports and drum (1) enters the mouth; Drum (1) top is connected with turbine (6) import through pipeline; Turbine (6) outlet is connected with hot-water heater (10) air inlet with exhaust bleeder heater (9) air inlet respectively through three-way control valve (8), and the air inlet of condenser (12) is connected with fluid reservoir (18) inlet with hot-water heater (10) gas outlet respectively through pipeline with the gas outlet; Middle low-temperature flue gas smoke exhaust pipe route flue gas heat exchange device (4), hot water preheater (15), smoke exhaust fan (17) and the pipeline formation that their are connected; Low-temperature flue gas pipeline, outlet connect hot water preheater (15) air inlet through pipeline during flue gas heat exchange device (4) inlet connect, and (15 gas outlets are connected with chimney with pipeline through smoke exhaust fan (17) the hot water preheater; The heat supply hot-water return constitutes by the interior heat exchanger tube of hot water preheater (15), back water pump (16), hot user, the interior heat exchanger tube of hot-water heater (10) and with the pipeline that they connect successively; The chilled(cooling) water return (CWR) constitutes by cooling tower (11), cooling water circulating pump (13), condenser (12) and with the pipeline that their connect; Cooling water circulating pump (13) in pipeline is connected in condenser (12) between heat exchanger tube inlet and cooling tower (11) outlet at bottom, interior the heat exchanger tube of condenser (12) export with cooling tower (11) on water distributor be connected.
2. low-temperature flue gas afterheat generating system in the drum type brake 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 drum type brake organic media evaporation according to claim 1, it is characterized in that: heat pipe (2) is two phase thermal siphons, and its evaporator section and condensation segment are provided with the fin of augmentation of heat transfer.
4. low-temperature flue gas afterheat generating system in the drum type brake 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 drum type brake 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.
6. low-temperature flue gas afterheat generating system in the drum type brake organic media evaporation according to claim 1 is characterized in that: dashing between the two-layer dividing plate (3) has air.
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| CN2011103710579A CN102401592A (en) | 2011-11-21 | 2011-11-21 | Power generation system for waste heat of medium and low temperature flue gas with cylinder organic medium evaporation |
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| CN2011103710579A CN102401592A (en) | 2011-11-21 | 2011-11-21 | Power generation system for waste heat of medium and low temperature flue gas with cylinder organic medium evaporation |
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| CN2011103710579A Pending CN102401592A (en) | 2011-11-21 | 2011-11-21 | Power generation system for waste heat of medium and low temperature flue gas with cylinder organic medium evaporation |
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| CN103075217A (en) * | 2013-01-27 | 2013-05-01 | 南京瑞柯徕姆环保科技有限公司 | Organic rankine-type industrial waste heat integrated recovery device |
| CN103089349A (en) * | 2013-01-27 | 2013-05-08 | 南京瑞柯徕姆环保科技有限公司 | Combined cooling, heating and power device of distributed type industrial boiler |
| CN103147810A (en) * | 2013-01-27 | 2013-06-12 | 南京瑞柯徕姆环保科技有限公司 | Extraction steam Rankine-organic Rankine combined circulating power generation device |
| CN103161527A (en) * | 2013-01-29 | 2013-06-19 | 南京瑞柯徕姆环保科技有限公司 | Steam Rankine and organic Rankine combined cycle power generation device |
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| CN103967547A (en) * | 2014-04-25 | 2014-08-06 | 南京中电环保科技有限公司 | Airtight submerged arc furnace gas power generation method and device |
| CN113530628A (en) * | 2021-09-02 | 2021-10-22 | 中国石油化工股份有限公司 | Corrosion-resistant and dust-deposition-resistant low-grade waste heat gradient recycling system |
| CN114719644A (en) * | 2022-02-17 | 2022-07-08 | 苏州创泰合金材料有限公司 | Waste heat recovery system of aluminum alloy casting workshop |
| CN114752359A (en) * | 2022-04-13 | 2022-07-15 | 华中科技大学 | Energy-saving environment-friendly working medium capable of replacing HFC245fa for heat pump boiler |
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Application publication date: 20120404 |