Vertical sintering waste heat driving water vapour and Organic Rankine Cycle parallel system
Technical field
The present invention relates to high-temperature particle heat-recovering generating plant and technical fields, more particularly to a kind of vertical burning
Surplus thermal drivers water vapour and Organic Rankine Cycle parallel system.
Background technique
The high efficiente callback of steel industry waste heat overbottom pressure resource and trans-utilization are one of the Main ways of industry energy conservation consumption reduction.
The sintering process of steel and iron industry second or third position is occupied for energy consumption, sintering waste heat is mainly made of two parts: sintering machine tail
The sintering mine sensible heat in portion, temperature are 800 950 °C, account for the 44.5% of sintering process energy consumption;The obvious heat of smoke of sintering machine discharge, puts down
Equal temperature is 150 200 °C, accounts for the 23.6% of sintering process energy consumption.Waste heat " matter " and " amount " comprehensive analysis show, sintering mine sensible heat
Accounting is up to 65%, sintering flue gas sensible heat accounting about 35%.Sintering mine sensible heat is recycled by vertical (spiral) distributary or ring cold machine
Waste heat recycling is carried out, cooling exhaust gas is obtained.The flue gas heat of cooling exhaust gas and sintering flue gas temperature between 300 450 °C accounts for
30% the 40% of entire excess heat, the flue gas heat lower than 300 °C accounts for 60% or more of all excess heats.
Sintering device flue gas mean temperature is usually no more than 150 °C but its flow is big;The flue gas of sintering machine tail portion bellows discharge
Temperature is 300 400 °C, reaches as high as 450 °C;The heatrejection for being sintered cooling device is different with the difference of cooling position,
Change between 70 520 °C, the prior art is only recycled 250 °C or more of hot waste gas.
Although sintering waste heat largely belongs to high temperature waste heat scope, still there are a considerable amount of cryogenic waste heat resources to produce
Raw, carrying out effective use to 250 °C of cryogenic waste heat resources below is the main behave for further increasing sintering waste heat utilization rate
One of.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of vertical sintering waste heat driving water vapour and Organic Rankine Cycle
Parallel system, high-temp waste gas, medium temperature by introducing organic Rankine cycle power generation system, to the recycling of sinter vertical cooling device
Exhaust gas and low temperature waste gas carry out classified utilization.
The technical solution of the invention is as follows, provides a kind of vertical sintering waste heat driving water vapour and Organic Rankine Cycle simultaneously
Connection system, including sinter vertical helical distributary cooling device ontology, the sinter vertical helical distributary cooling device sheet
Body includes that high temperature goes out air compartment, medium temperature goes out air compartment, low temperature goes out air compartment and inlet air plenum;
The medium temperature goes out after air compartment connects with disposable dust remover, connects evaporator after merging with sintering flue gas fan outlet, takes off
Sulphur denitrification apparatus and chimney are sequentially connected with through flue;The evaporator is connect with the first power generator;
The high temperature goes out air compartment and disposable dust remover, waste heat boiler, secondary filter, cold wind intake valve, circulating fan, release
Valve and the inlet air plenum are sequentially connected through cooling feed channel;The waste heat boiler is connect with the second rotor machine;
The low temperature goes out air compartment and is sequentially connected with disposable dust remover and secondary filter outlet through cooling feed channel;
Sintering machine is equipped with bellows, and the bellows, flue collector, smoke duster and sintering flue gas blower are through sintering flue gas pipeline
It is sequentially connected.
After using the above structure, vertical sintering waste heat driving water vapour of the invention and Organic Rankine Cycle parallel system,
Compared with prior art, it has the advantage that
The present invention is not used to the status of power generation for vertical waste heat recovery generating system middle-low temperature heat, organic bright by introducing
Agree cycle generating system, high-temp waste gas, medium temperature exhaust gas and the low temperature waste gas of the recycling of sinter vertical cooling device are classified
It utilizes, wherein high-temp waste gas is applied to water vapour Rankine cycle electricity generation system, and medium temperature exhaust gas generates electricity applied to Organic Rankine Cycle
System, low temperature waste gas is for heating cooled gas;The medium temperature exhaust gas of the residual heat resources of sintering flue gas and vertical cooling device
Merge, is used for organic Rankine cycle power generation system.Senior middle school's cryogenic waste heat resource in sintering process is applied to the maximum extent
Power generation provides cogeneration electric power to the maximum extent, increases the personal power supply amount of iron and steel enterprise, realizes energy-saving, raising
The economic benefit of iron and steel enterprise.
As an improvement, first power generator includes evaporator, expanding machine, the first condenser, fluid reservoir, circulation increasing
Press pump;The evaporator, expanding machine, the first condenser, fluid reservoir, circularly-supercharged pump and evaporator are suitable through organic working medium pipeline
Secondary to be connected, the expanding machine end connects the first generator.
As an improvement, second electricity generation system include condensing turbine, the second condenser, first circulation water pump,
Oxygen-eliminating device, second circulation water pump;The waste heat boiler, condensing turbine, the second condenser, first circulation water pump, deoxygenation
Device, second circulation water pump and waste heat boiler are sequentially connected through water and steam pipeline, and condensing turbine intergrade connects deoxygenation
Device, condensing turbine end connect the second generator.
As an improvement, in the organic working medium pipeline working medium be R600, R600a, R245fa, R236fa, R236ea,
One or more of R601, R601a, RC318 and R227ea.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of vertical sintering waste heat driving water vapour and Organic Rankine Cycle parallel system;
It is as shown in the figure: sinter vertical helical distributary cooling device ontology 1, sintering machine 2, bellows 3, flue collector 4, smoke duster
5, sintering flue gas blower 6, evaporator 7, circularly-supercharged pump 8, desulfuring and denitrifying apparatus 9, expanding machine 10, the first generator 11, chimney
12, the first condenser 13, fluid reservoir 14, the second generator 15, condensing turbine 16, the second condenser 17, first circulation water
Pump 18, oxygen-eliminating device 19, second circulation water pump 20, waste heat boiler 21, secondary filter 22, cold wind intake valve 23, circulating fan 24,
Diffusion valve 25, disposable dust remover 26, inlet air plenum 27, low temperature go out air compartment 28, medium temperature goes out air compartment 29 and high temperature goes out air compartment 30.
Specific embodiment
In order to so more preferable that understand the application, various aspects of the reference attached drawing to the application are made into more detailed description.It answers
Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way
Range.In the specification, the identical element of identical reference numbers.
In the accompanying drawings, for ease of description, thickness, the size and shape of object are slightly exaggerated.Attached drawing is merely illustrative
And it is non-critical drawn to scale.
It will also be appreciated that term "comprising" " comprising ", " having ", "comprising", " including ", when making in the present specification
Used time indicates that there are the feature, entirety, step, operations, elements, and/or components, but does not preclude the presence or addition of one
Or other multiple features, entirety, step, step, operation, component, assembly unit and/or their combination.In addition, ought such as " ... extremely
Few one " statement when appearing in after the list of listed feature, feature listed by modification is entire, rather than the list in modification list
Only element.
Vertical sintering waste heat driving water vapour of the invention and Organic Rankine Cycle parallel system, including sinter vertical spiral
Revolve distributary cooling device ontology 1, the sinter vertical helical distributary cooling device ontology 1 include high temperature go out air compartment 30, in
Temperature goes out air compartment 29, low temperature goes out air compartment 28 and inlet air plenum 27;
After the medium temperature goes out air compartment 29 and the connection of disposable dust remover 26, connects and evaporate after merging with the outlet of sintering flue gas blower 6
Device 7, desulfuring and denitrifying apparatus 8 and chimney 12 are sequentially connected with through flue;The evaporator 7 is connect with the first power generator;
First power generator includes evaporator 7, expanding machine 10, the first condenser 13, fluid reservoir 14, circularly-supercharged pump 8;It is described
Evaporator 7, expanding machine 10, the first condenser 13, fluid reservoir 14, it is circularly-supercharged pump 8 and evaporator 7 it is suitable through organic working medium pipeline
Secondary to be connected, 10 end of expanding machine connects the first generator 11.In the organic working medium pipeline working medium be R600,
One or more of R600a, R245fa, R236fa, R236ea, R601, R601a, RC318 and R227ea, above-mentioned working medium
It is zero for ozone depletion latent value (ODP), global warming potential (GWP) is lower, environment amenable organic matter.
The high temperature goes out air compartment 30 and disposable dust remover 26, waste heat boiler 21, secondary filter 22, cold wind intake valve
23, circulating fan 24, diffusion valve 25 and the inlet air plenum 27 are sequentially connected through cooling feed channel;The waste heat boiler 21 with
The connection of second rotor machine;Second electricity generation system includes condensing turbine 16, the second condenser 17, first circulation
Water pump 18, oxygen-eliminating device 19, second circulation water pump 20;The waste heat boiler 21, condensing turbine 16, the second condenser 17,
First circulation water pump 18, oxygen-eliminating device 19, second circulation water pump 20 and waste heat boiler 21 are sequentially connected through water and steam pipeline, are coagulated
16 intergrade of vapour formula steam turbine connects oxygen-eliminating device 19, and 16 end of condensing turbine connects the second generator.
The low temperature goes out air compartment 28 and is cooled down feed channel successively phase with disposable dust remover 26 and the outlet of secondary filter 22
Even;
Sintering machine 2 is equipped with bellows 3, and the bellows 3, flue collector 4, smoke duster 5 and sintering flue gas blower 6 are through being sintered cigarette
Feed channel is sequentially connected.
The working method of vertical sintering waste heat driving water vapour and Organic Rankine Cycle parallel system of the invention includes such as
Lower step:
S1,700 850 DEG C of high temperature sinter from head clearance are added in sinter vertical helical distributary cooling device 1, with
Become 160 ~ 180 DEG C of cold sinter after 100 ~ 120 DEG C of the cooling gas heat exchange that intake stack enters to arrange from bottom of device
Out;
S2,400 ~ 550 be heated DEG C high-temp waste gas go out air compartment 30 after 26 dedusting of disposable dust remover from high temperature and be passed through waste heat
Boiler 21 comes out in waste heat boiler after water supply with air compartment 28 is gone out from the low temperature of sinter vertical helical distributary cooling device ontology 1
150 250 °C after 26 dedusting of disposable dust remover low temperature waste gas mixing, blasted by circulating fan 24 by inlet air plenum 27
Sinter vertical helical distributary cooling device ontology 1 completes circulation;Cold wind is equipped between secondary filter 22 and circulating fan 24
Intake valve 23 can supplement cooling air volume after opening, be equipped with diffusion valve between circulating fan 24 and inlet air plenum 27, after opening
Cooling air can be diffused, to guarantee to be sintered the temperature of cooling exhaust gas after vertical helical distributary cooling device heats;
After water supply in S3, waste heat boiler 21 is heated, become the superheated vapour of high temperature and pressure, pushes condensing turbine 16
Acting, condensing turbine 16 drive the power generation of the second generator 15, and the steam exhaust that condensing turbine 16 is discharged after acting is condensing
It is cooling in device 17, power is provided by first circulation water pump 18 and enters oxygen-eliminating device 19, is extracted out from 16 intergrade of condensing turbine
Steam heating, liquid water after deoxygenation provides power through second circulation water pump 20 and enters waste heat boiler 21 as water supply;
After the medium temperature exhaust gas that S4, sinter vertical helical distributary cooling device ontology 1 generate goes out the discharge of air compartment 29 by medium temperature, through one
After secondary 26 dedusting of deduster, 150 200 °C of the sintering flue gas generated with sintering machine 2 is mixed, and heats organic work into evaporator 7
Matter is cooled later by being discharged after desulfuring and denitrifying apparatus 9 by chimney 12;100 200 °C of gas are flashed to after being heated
Organic working medium pushes the power generation of the first generator 11 by expanding machine 10, and organic working medium is in expanding machine 10 after expansion work, steam exhaust
Become liquid organic working medium after the condensation of condenser 13, into fluid reservoir 14, then provides power by circulation force (forcing) pump 8 and enter steaming
Hair device 7 exchanges heat with flue gas.