CN102121405A - Low-grade smoke organic rankine cycle waste heat generating system of heating furnace in steel rolling plate plant - Google Patents
Low-grade smoke organic rankine cycle waste heat generating system of heating furnace in steel rolling plate plant Download PDFInfo
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a low-grade smoke organic rankine cycle waste heat generating system of a heating furnace in a steel rolling plate plant, wherein air, a coal gas heat exchanger and a working medium evaporation chamber are in the heating furnace; the working medium evaporation chamber is filled with normal pentane and is provided with a working medium tubular evaporator; a steam outlet of the working medium evaporator is connected with a steam inlet of a steam turbine generator set through a pipeline; the steam outlet of the steam turbine generator set is connected with a steam inlet of a fixed tube-plate type heat exchanging condenser through a pipeline; a liquid outlet of the fixed tube-plate type heat exchanging condenser is connected with a liquid inlet of a seal circulating pump through a pipeline; a liquid outlet of a working medium seal circulating pump is connected with a working medium liquid inlet of the evaporation chamber through a pipeline; a water outlet of a cooling tower is connected with a water inlet of a water circulating pump through a pipeline; a water outlet of the water circulation pump is connected with a cooling water inlet of the fixed tube-plate type heat exchanging condenser through a pipeline; and a cooling water outlet of the fixed tube-plate type heat exchanging condenser is connected with the cooling tower through a pipeline. According to the invention, the waste heat of tail gas of the heating furnace at the temperature of 300-100 DEG C can be recycled.
Description
Technical field
The present invention relates to a kind of heat reclaiming system, the organic Lang Ken circulation of the low-grade flue gas of especially a kind of rolled steel plate workshop oven afterheat generating system.
Background technique
Industrial exhaust heat utilizes, and is the importance of industrial energy saving, can be regarded as the development and use of industrial secondary energy.From the viewpoint of modern thermal physics, the heat of as much can be for the value difference of utilizing under different temperature.The temperature in waste heat source is low more, and the grade of waste heat is just lower.The industrial smoke waste heat can be classified according to the temperature that it had, and generally can be divided three classes: 600 ℃ of (1) high-temperature flue gas (〉); (2) warm flue gas in (300 ~ 600 ℃); (3) low-temperature flue gas (＜300 ℃).The waste heat of high, middle temperature flue gas now adopts afterheat generating system more to meet the principle of energy level coupling.High, middle temperature fume afterheat generation technology has obtained using widely in China, is mainly used in cement furnace, the glass stove of building material industry; Above the blast furnace of metallurgy industry, the steelmaking converter etc.The technology comparative maturity that high, middle temperature fume afterheat generating is used at home, a large amount of directions of encouraging and supporting of country are low-temperature cogenerations at present, because there are a large amount of low grade residual heats in high energy consumption industries such as electric power, metallurgy, chemical industry, building materials, petrochemical industry.
Iron and steel production consumes a large amount of energy and carries energy working medium, and its energy consumption accounts for about 10% of Chinese national economy total energy consumption.At present, during the Iron and Steel Enterprises in China fume afterheat utilized, the recycling situation of high-temperature flue gas waste heat was better, mainly contains: dry quenching heat recovery, the heat recovery of sintering deposit sensible heat, blast-furnace top gas recovery turbine generating etc.And the recovery utilization rate of middle low-temperature flue gas waste heat is lower, pure low-temperature cogeneration technology can make full use of the Iron And Steel Industry waste heat, also be the domestic direction of giving priority at present, the pure low-temperature flue gas cogeneration of Iron And Steel Industry mainly comprises: steel sintering cogeneration, steel-smelting electric furnace low-temperature cogeneration, adopting water vapor in these conventional temperature cogeneration projects is working medium, and by four large equipments: boiler, steam turbine, condenser and feed water pump are formed.Working medium is constantly carried out isobaric heating, adiabatic expansion, isobaric heat release and four processes of adiabatic compression in heat power equipment, make heat energy constantly be converted into mechanical energy, and then drives the generator set generating.The Iron And Steel Industry fume afterheat utilizes power generation project as follows:
1), steel sintering cogeneration.Certain 300m of steel mill
2Sintering belt cooling machine fume afterheat generation engineering is the project of the low temperature waste gas cogeneration implemented for the first time of Iron and Steel Enterprises in China sintering system.First has China independent intellectual property, all adopts steel sintering cogeneration engineering---certain steel mill's the 3rd sintering plant " 5MW low temperature exhaust heat power station " of home equipment.It demarcates generated energy is 5340 kilowatts, surpasses 5000 kilowatts 6 percentage points of the specified generated outputs of design, and year actual power amount 4,000 ten thousand degree are compared the sintering plant that other adopts foreign technology, electric energy that can multiple 35%.3.11 ten thousand tons of year reducing emission of carbon dioxide are equivalent to year save 1.45 ten thousand tons in mark coal, year create 1,800 ten thousand yuan of direct economic benefits.Domestic large-scale iron and steel enterprise is all adopting or is adopting sintering belt cooling machine flue gas low-temperature cogeneration item project at present;
2), steel-smelting electric furnace low-temperature cogeneration.Certain steel mill's electric furnace flue gas UTILIZATION OF VESIDUAL HEAT IN project, 10000 kilowatts of electric motor powers, the fifty-five million degree that can generate electricity in year, 8,000 ten thousand yuan of project gross investments.Can realize annual generated energy 6,100 ten thousand degree after building up, 5.75 ten thousand tons of annual reducing emission of carbon dioxide are equivalent to 2.23 ten thousand tons in year saving mark coal, annual 3780 ten thousand yuan of the direct economic benefits of creating;
3), steelmaking converter fume afterheat generating.32 tons of afterheat steams that 4 25t converter gas of certain steel mill's first steel works produce design steel-making flue gas converter gas cogeneration engineering, and building rated power is the waste heat power station of 3.5MW, and the turnover is (not containing the construction period) in 6.63.
Three, the shortcoming of existing product: 1, low-temperature cogeneration is that working medium is difficult to the problem of recovered temperature at 300 ~ 100 ℃ of scope inner exhaust gas waste heats with water; 2, general water need be built the exhaust heat boiler room as the waste heat recovering device of working medium, the cascade utilization of energy instinct reality, and increase enterprise energy consumption; 3, structure more complicated, cost cost height does not make full use of low grade residual heat.Such as conduit component, valve etc., then more complicated; The unit that in electrical network, moves, its controlling mechanism more complicated; 4, water is that working medium cogeneration forms the possibility of moisture and the possibility that produces corrosion and damage when the little water droplet of high speed impacts steam turbine easily; 5, compare with pentane, water vapor density is little, specific volume is big, and this can make the design size of the pipeline in steam turbine (the particularly height of its exhaust stage blade), exhaust duct and the condenser bigger.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the organic Lang Ken circulation of the low-grade flue gas of a kind of rolled steel plate workshop oven afterheat generating system is provided.
According to technological scheme provided by the invention, the organic Lang Ken circulation of the low-grade flue gas of described rolled steel plate workshop oven afterheat generating system, it comprises oven, Turbo-generator Set, water-circulating pump, working medium sealing recycle pump, fixed tube sheet type heat exchange condenser and cooling tower; Have air, gas change heater and working medium evaporating cavity in the described oven, be full of pentane in the working medium evaporating cavity, working medium evaporating cavity internal frame is provided with the working medium tubular evaparator, and the exhaust end of oven is connected with exhaust pipe, and the exhaust end inside of oven is equipped with booster fan; The working medium steam output end mouth of described working medium evaporating cavity connects the working medium admission port of Turbo-generator Set by pipeline, the working medium steam output end mouth of Turbo-generator Set is connected and fixed the working medium admission port of tube-plate heat exchange condenser by pipeline, the working medium bleed port of fixed tube sheet type heat exchange condenser connects the working medium feed liquor port that working medium seals recycle pump by pipeline, and the working medium bleed port of working medium sealing recycle pump connects the working medium feed liquor port of working medium evaporating cavity by pipeline; The water outlet port of described cooling tower connects the water inlet port of water-circulating pump by pipeline, the water outlet port of water-circulating pump is connected and fixed the cooling water water inlet port of tube-plate heat exchange condenser by pipeline, and the cooling water water outlet port of fixed tube sheet type heat exchange condenser inserts cooling tower by pipeline.
Described working medium tubular evaparator is a spiral fin tubular type vaporizer.
The present invention compares with the water vapor Rankine cycle and has following advantage:
1) compare with water vapor, pentane density is big, specific volume is little, and this can make the design size of the pipeline in steam turbine (the particularly height of its exhaust stage blade), exhaust duct and the condenser less.
2) the low boiling working fluid pentane has good thermodynamic property, the protection of explosion protection and environment and job site is taken into account simultaneously.Low boiling point and high vapor pressure make the present invention have the higher thermal efficiency than water vapor Rankine cycle, and the utilization of lower temperature thermal source is had higher efficient.
3) different with water vapor, pentane remains drying regime from the high pressure to low pressure in expansion acting process, and this has just eliminated the possibility of shape moisture and the possibility that produces corrosion and damage when the little water droplet of high speed impacts steam turbine.So the present invention can more effectively adapt to operation at part load and big power variation than water vapor steam turbine, does not need to adorn superheater.
4), preferentially make air-cooled condenser in the water-deficient area.The air-cooled condenser that the present invention uses is more much smaller than the volume of the air-cooled condenser that water vapour power plant uses, and price is also much lower.
5) compare with water vapor,, when low blades speed, can obtain favourable aerodynamic force and cooperate, can produce high turbine efficiency during 50Hz, do not need the toothing roller box because the velocity of sound of organic working medium is low.
6) organic working medium condensing pressure height, whole system is worked under approaching and a little higher than atmospheric pressure, makes the leakage phenomena of organic working medium greatly reduce.
7) organic working medium solidifying point very low (being lower than-73 ℃) still can release energy at a lower temperature.Can increase at cold snap like this and exert oneself, condenser does not need to increase antifreeze facility yet.
8) this working medium of pentane is cheap, and the source is wide, and industries such as petrochemical industry itself just can be produced in a large number.And its character is more stable, has been used for other industry in a large number.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in the figure: the organic Lang Ken circulation of this low-grade flue gas of rolled steel plate workshop oven afterheat generating system, it comprises oven 2, Turbo-generator Set 7, water-circulating pump 10, working medium sealing recycle pump 11, fixed tube sheet type heat exchange condenser 12 and cooling tower 9; Have air, gas change heater 3 and working medium evaporating cavity 15 in the described oven 2, be full of pentane in the working medium evaporating cavity 15, working medium evaporating cavity 15 internal frames are provided with working medium tubular evaparator 4, and the exhaust end of oven 2 is connected with exhaust pipe 5, and the exhaust end inside of oven 2 is equipped with booster fan 6; The working medium steam output end mouth of described working medium evaporating cavity 15 connects the working medium admission port of Turbo-generator Set 7 by pipeline, the working medium steam output end mouth of Turbo-generator Set 7 is connected and fixed the working medium admission port of tube-plate heat exchange condenser 12 by pipeline, the working medium bleed port of fixed tube sheet type heat exchange condenser 12 connects the working medium feed liquor port that working medium seals recycle pump 11 by pipeline, and the working medium bleed port of working medium sealing recycle pump 11 connects the working medium feed liquor port of working medium evaporating cavity 15 by pipeline; The water outlet port of described cooling tower 9 connects the water inlet port of water-circulating pump 10 by pipeline, the water outlet port of water-circulating pump 10 is connected and fixed the cooling water water inlet port of tube-plate heat exchange condenser 12 by pipeline, and the cooling water water outlet port of fixed tube sheet type heat exchange condenser 12 inserts cooling tower 9 by pipeline.
Described working medium tubular evaparator 4 is a spiral fin tubular type vaporizer.
When underway low temperature exhaust heat is recycled, when waste heat supply temperature during, should not with water working medium, particularly to the power recovery of the low temperature exhaust heat below 250 ℃ at 300 ~ 400 ℃, reality can not be working medium with water, at this moment needs to consider to adopt the power cycle of low boiling working fluid.
Principle of the present invention is to adopt the low-boiling point material (perhaps mixture) that can become pressurized gas under lower temperature, produces power, the low temperature exhaust heat of recyclable different temperatures scope from discarded waste heat.When now utilizing low temperature organic working medium (pentane) as circuit working medium, capital equipment has: working medium tubular evaparator 4, Turbo-generator Set 7, fixed tube sheet type heat exchange condenser 12 and working medium sealing recycle pump 11 etc.For the low enthalpy heat that waits, the present invention compares with the water vapor Rankine cycle of routine and has many good qualities, be mainly reflected in to reclaim the sensible heat aspect higher efficient is arranged since show in the circulation ripe/latent heat is unequal, and this ratio is big in the ORC technology.Therefore adopt the recyclable more heat of ORC technology.It is that pentane is depressed at standard atmosphere that my company selects low boiling working fluid for use, and the boiling point of this working medium is 36.05 ℃, and critical temperature is 469.77K, and critical pressure is 3.389MPa, and critical density is 0.2426g/m3.The pressure of water vapour and pentane, density relatively see Table 1.
Table 1
| Temperature/℃ | Water vapour pressure/kPa | Water-vapour density/kg/ m 3 | Pentane pressure/kPa | Pentane density/kg/ m 3 |
| 50 | 12 | 0.08 | 160 | 4.57 |
| 100 | 101 | 0.60 | 589 | 16.49 |
| 150 | 476 | 2.55 | 1600 | 47.77 |
The present invention includes: oven furnace delivery table 1, oven 2, air, gas change heater 3, working medium tubular evaparator 4, exhaust pipe 5, booster fan 6, Turbo-generator Set 7, grid-connection device 8, cooling tower 9, water-circulating pump 10, working medium sealing recycle pump 11, fixed tube sheet type heat exchange condenser 12, the long equipment 13 of survey of weighing, oven are gone into furnace roller road 14 and working medium evaporating cavity 15.
Oven 2 has oven furnace delivery table 1, and oven furnace delivery table 1 goes being transported in the next subsequent handling after the steel billet burning, be oven 2 from carrying device;
Oven 2: by high, coke oven mixed gas top preheating section, bringing-up section, soaking zone are all adopted vertical burner combustion, being used for heating steel billet is purpose;
Air, gas change heater 3: be that oven 2 self is with heat transmission equipment, be used for warm-up combustion-supporting air and coal gas,, increase physics heat to improve air, temperature of gas, improve the equipment of theoretical temperature combustion, reclaim waste gas residual heat to greatest extent, to improve combustion thermal efficiency;
Working medium tubular evaparator 4 is selected spiral fin tubular type vaporizer for use, the extended surface ribization of spiral fin tubular type vaporizer is a kind of important augmentation of heat transfer mode, the extended surface ribization has two big benefits: the one, be used for augmentation of heat transfer, reduction equipment area, and reach the purpose of not only saving material but also energy saving; The 2nd, utilize them to regulate wall surface temperature, improve the equipment work ambient temperature, guarantee the safe and reliable operation of equipment.Fin mainly is used to improve heat exchange area, therefore improves whole heat exchange efficiency.Spiral-finned tube is a kind of of extended surface, the extended surface heat transfer by convection has many advantages, but with regard to unit area, under the same conditions, the heat that extended surface transmitted is less than the heat that the light pipe surface is transmitted, this is because extended surface is compared with the light pipe surface, and heat is transferred heat to heated medium from the heat release medium will cause extended surface to contact the cause of the working medium temperature difference less than the light pipe surface with it with the temperature and pressure of its working medium that is contacted through the conduction of longer distance.Spiral-finned tube has been owing to expanded heating surface significantly, make heat conduction reinforced, so when occupying, can adopt lower flue gas flow rate, and the wearing and tearing of heating surface are alleviated with the light pipe same space.In spiral fin tubular type vaporizer, low boiling organic working medium pentane flows in pipe and absorbs heat, the transversal flow heat release outside pipe of waste heat source low-temperature flue gas.Form an angle between the fin plane of spiral fin and the plane perpendicular to tubular axis.The numerical value at angle is generally little, and is main relevant with the numerical value of fin pitch.
Exhaust pipe 5(is a chimney): the height of release of exhaust pipe 5 is relevant with gas purging speed and effluent concentration, and the setting of exhaust pipe is relevant with meteorologic factor, terrian condition and the architectural environment etc. in place again, meet discharging standards;
Booster fan 6: guarantee the effect of bleeding of pipeline, make hot flue dust smoothly by air, gas change heater 3 is with working medium tubular evaparator 4 and reduce dust deposit, makes whole heating system better effects if, adopts frequency control of motor speed to be convenient to system's saving power;
Turbo-generator Set 7: Turbo-generator Set 7 is one of most important parts in the afterheat generating system.Turbo-generator Set 7 is selected for use, and this steam turbine and conventional steam turbine but are very different.Design for the low boiling working fluid steam turbine will reach two targets: one, the waste heat that utilizes as much as possible, and promptly final temperature of discharging is low as far as possible; Two, generated output is maximum as far as possible under identical waste heat amount condition.This steam turbine power generation unit is a complete closed, comprises a driving turbine, an induction generator.The ORC cycle fluid adopts the organic media pentane, simultaneously lubricating and cooling medium as generator and bearing.Whole rotary components of ORC system (except the cold and hot pump) all are installed on the axle, and in a housing, steam turbine is an inward flow turbine, and generator is an induction type; All bearings lubricate by organic media, and generator also comes the machine cooling by organic media, and rotating speed is (3500 ~ 3640) r/min.Whole unit is arranged vertically, and steam turbine is positioned at the bottom, and bearing is positioned at the top, and generator is in the centre, between two radial bearings.This vertically arranged characteristics are that the organic media liquid that generator can utilize pump and upper bearing (metal) to overflow freely falls lubricated, cooling; The Lubricants of generator and bearing also can be discharged to easily and be arranged in following condenser, and when starting and shut down, the radial bearing load is minimum, thereby reduces friction loss.The power range of this Turbo-generator Set is that its rated power of 0.75 ~ 2.1MW depends on heat source temperature and total amount of heat, thus throttle (steam) temperature, pressure and the flow of decision steam turbine.Turbine rotor diameter and flow passage component height are also decided according to throttle (steam) temperature and flow, and the steam turbine casing changes the size of impeller and generator to the shape size constancy according to watt level.
Grid-connection device 8: what is called is incorporated into the power networks and is meant generator set under normal operating condition, exists on major loop with the conventional power distribution network in outside to be electrically connected, and tie point is commonly referred to as " points of common connection " (being called for short PCC).Be electrically connected modes such as comprising cable directly connects, the process transformer connects, the connection of process inverter.Be incorporated into the power networks according to electric energy Power Exchange mode can be divided into common be incorporated into the power networks and be incorporated into the power networks do not surf the Net two kinds.The former can carry unnecessary electric energy power to external electrical network by generator set, the latter is then strict, and the electric energy power of generator set of forbidding is sent outside, be that PCC place power flow direction can only be to flow to power consumer from external electrical network, therefore, " be incorporated into the power networks and do not surf the Net " of steel industry UTILIZATION OF VESIDUAL HEAT IN power generation system though implication be meant steel industry UTILIZATION OF VESIDUAL HEAT IN power generation system and outside conventional be incorporated into the power networks but its generated energy is all personal by steel industry factory for power distribution network, promptly generating electricity not to be transferred to the external electrical network use, and the tie point that is incorporated into the power networks on the pure technical also all supplies directly to connect by cable on the power distribution network circuit in the inside of steel industry enterprise.More popular saying, being incorporated into the power networks also can be regarded as technical elements, generally refers to " equipment ", is to have physical connection between generator and power generating equipment and electric power system.Online then is the marketing aspect, generally refers to " ", and be electric energy, electric weight will transmit and sell to the user by electric power system;
Cooling tower 9: the pentane of the used heat of will carrying under one's arms carries out heat exchange at Ta Nei and water, makes used heat be transferred to air and distributes into atmosphere;
Water-circulating pump 10: the cooling water forced conveyance is carried out convection heat exchange to fixed tube sheet type heat exchange condenser 12, flow of hot water is got back in the cooling tower 9 and is cooled off then, so in proper order, the used pump that cooling water be circulated just is recycle pump, is the condenser working power source;
Working medium sealing recycle pump 11: this working medium sealing recycle pump 11 is squeezed into fixed tube sheet type heat exchange condenser 12 condensed pentanes in the vaporizer, and whole working medium circulation is moved; Design the recycle pump of sealing effect by pentane chemistry, physical property, flow median size, under the stable operation condition, the changes in flow rate of pump is smaller.
Fixed tube sheet type heat exchange condenser 12: because the medium of cooling is not a water, but low boiling working fluid pentane, because the inflammable characteristic that pentane had, in order to ensure safety in production and operation, so system is very high to the sealing requirements of each parts and pipeline, in high, the middle temperature cogeneration with water for the medium condenser has used plate-fin heat exchanger, plate-fin heat exchanger is compared with shell-and-tube heat exchanger, structure is comparatively compact, the per unit volume heat transfer area is bigger.But simultaneously the shortcoming that has of plate-fin heat exchanger is: because of runner narrow and small, cause easily and stop up and the increase resistance drop, after fouling of heat exchangers, clean very difficult, and because the dividing plate and the fin of heat exchanger all are that very thin aluminium sheet (paper tinsel) makes, so require medium that aluminium is not produced corrosion,, then be difficult to repairing if cause inner string to leak in case corrode.Native system determines to use fixed tube-sheet exchanger as condenser, compares with other shell-and-tube heat exchanger, and tube-plate is the thinnest, and not only cost is low, and is in light weight, and bypass seepage flow is less, and every inside tube can both be cleaned.In this condenser, the low boiling working fluid pentane is walked shell side, and recirculated cooling water is walked tube side, by this quadrat method temperature is reduced specified value;
Weigh, the long equipment 13 of side: be the equipment that carries of oven 2, be mainly used to measure the weight and the length of steel billet;
Oven is gone into furnace roller road 14: steel billet is transported in the oven heats, be oven 2 from carrying device.
Working procedure of the present invention is as follows:
On the one hand: waste gas heat flows into working medium tubular evaparator 4 earlier under booster fan 6 suction functions, carry out the heat exchange convection current, sucks booster fan 6 then to exhaust pipe 5, and enters in the atmosphere.On the other hand: the organic working medium (pentane) of by the heat exchange convection current heat energy being passed to sealing and circulating at working medium tubular evaparator 4, after being heated, organic working medium reaches boiling point and vaporization, the organic working medium of having vaporized enters Turbo-generator Set 7, enter the turbine expansion acting by pipeline and injection valve, the turbine of high speed rotating drives generator for electricity generation by coupling.Weary gas after the acting flows out from turbine outlet, enters in the fixed tube sheet type heat exchange condenser 12 it is cooled to liquid, is compressed to by working medium sealing recycle pump 11 and carries out second in the working medium evaporating cavity 15 and take turns vaporization and circulation, so repeatedly.And the electric energy that sends sends electric weight to user and sale by grid-connection device 8.
Working procedure of the present invention is made up of four processes: the low working medium of boiling is vaporized by using waste heat from tail gas, is heated to be overheated gas, can be considered the isobaric heat absorption process; Overheated Working medium gas promotes blade rotation by nozzle in steam turbine, the acting of expanding in steam turbine can be considered the adiabatic expansion process; The weary gas of low pressure of being discharged by steam turbine enters fixed tube sheet type heat exchange condenser 12 and is recycled water cooling, can be considered isobaric heat release; Working medium gas is cooled to liquid state and enters liquid container, boosts and delivers in the working medium evaporating cavity 15 of oven 2 by working medium sealing recycle pump 11, can be considered the adiabatic compression process.
Claims (2)
1. the organic Lang Ken circulation of the low-grade flue gas of rolled steel plate workshop oven afterheat generating system is characterized in that: it comprises oven (2), Turbo-generator Set (7), water-circulating pump (10), working medium sealing recycle pump (11), fixed tube sheet type heat exchange condenser (12) and cooling tower (9); Have air, gas change heater (3) and working medium evaporating cavity (15) in the described oven (2), the working medium evaporating cavity is full of pentane in (15), working medium evaporating cavity (15) internal frame is provided with working medium tubular evaparator (4), the exhaust end of oven (2) is connected with exhaust pipe (5), and the exhaust end inside of oven (2) is equipped with booster fan (6); The working medium steam output end mouth of described working medium evaporating cavity (15) connects the working medium admission port of Turbo-generator Set (7) by pipeline, the working medium steam output end mouth of Turbo-generator Set (7) is connected and fixed the working medium admission port of tube-plate heat exchange condenser (12) by pipeline, the working medium bleed port of fixed tube sheet type heat exchange condenser (12) connects the working medium feed liquor port that working medium seals recycle pump (11) by pipeline, and the working medium bleed port of working medium sealing recycle pump (11) connects the working medium feed liquor port of working medium evaporating cavity (15) by pipeline; The water outlet port of described cooling tower (9) connects the water inlet port of water-circulating pump (10) by pipeline, the water outlet port of water-circulating pump (10) is connected and fixed the cooling water water inlet port of tube-plate heat exchange condenser (12) by pipeline, and the cooling water water outlet port of fixed tube sheet type heat exchange condenser (12) inserts cooling tower (9) by pipeline.
2. the organic Lang Ken circulation of the low-grade flue gas of rolled steel plate as claimed in claim 1 workshop oven afterheat generating system is characterized in that: described working medium tubular evaparator (4) is a spiral fin tubular type vaporizer.
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| CN102168590A (en) * | 2011-03-15 | 2011-08-31 | 中国电力工程顾问集团西南电力设计院 | Gas turbine generating system using flue gas waste heat organic hydrocarbon mixture |
| CN103398591A (en) * | 2013-08-18 | 2013-11-20 | 佛山市广旭节能自动化科技有限公司 | Waste heat utilization system for aluminium melting furnace |
| CN104832226A (en) * | 2015-03-31 | 2015-08-12 | 李大鹏 | Coal-to-liquids and gas generating cogeneration apparatus and method |
| CN104912634A (en) * | 2015-05-06 | 2015-09-16 | 东南大学 | Flue gas dust removal and waste heat utilization system for electricity generation cabin in South Pole |
| TWI574751B (en) * | 2015-06-18 | 2017-03-21 | Shi Li-Ju | Energy Saving Purification System for High Temperature Organic Liquid |
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| CN102168590A (en) * | 2011-03-15 | 2011-08-31 | 中国电力工程顾问集团西南电力设计院 | Gas turbine generating system using flue gas waste heat organic hydrocarbon mixture |
| CN103398591A (en) * | 2013-08-18 | 2013-11-20 | 佛山市广旭节能自动化科技有限公司 | Waste heat utilization system for aluminium melting furnace |
| CN103398591B (en) * | 2013-08-18 | 2015-07-01 | 广东工业大学 | Waste heat utilization system for aluminium melting furnace |
| CN104832226A (en) * | 2015-03-31 | 2015-08-12 | 李大鹏 | Coal-to-liquids and gas generating cogeneration apparatus and method |
| CN104832226B (en) * | 2015-03-31 | 2016-08-24 | 李大鹏 | A kind of coal liquifaction and coal gas power generating simultaneously device and method |
| CN104912634A (en) * | 2015-05-06 | 2015-09-16 | 东南大学 | Flue gas dust removal and waste heat utilization system for electricity generation cabin in South Pole |
| TWI574751B (en) * | 2015-06-18 | 2017-03-21 | Shi Li-Ju | Energy Saving Purification System for High Temperature Organic Liquid |
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Application publication date: 20110713 |