CN110388652A - It is a kind of improve heat utilization rate flue gas take off white device - Google Patents
It is a kind of improve heat utilization rate flue gas take off white device Download PDFInfo
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- CN110388652A CN110388652A CN201910640411.XA CN201910640411A CN110388652A CN 110388652 A CN110388652 A CN 110388652A CN 201910640411 A CN201910640411 A CN 201910640411A CN 110388652 A CN110388652 A CN 110388652A
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- Prior art keywords
- flue gas
- condenser
- utilization rate
- thermal cycle
- cycle pipeline
- Prior art date
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- 239000003546 flue gas Substances 0.000 title claims abstract description 116
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 17
- 239000003517 fume Substances 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 19
- 238000004064 recycling Methods 0.000 abstract description 10
- 239000002245 particle Substances 0.000 description 11
- 239000000779 smoke Substances 0.000 description 10
- 235000019504 cigarettes Nutrition 0.000 description 9
- 238000006477 desulfuration reaction Methods 0.000 description 9
- 230000023556 desulfurization Effects 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 9
- 239000013618 particulate matter Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- MXWHMTNPTTVWDM-NXOFHUPFSA-N mitoguazone Chemical compound NC(N)=N\N=C(/C)\C=N\N=C(N)N MXWHMTNPTTVWDM-NXOFHUPFSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of flue gases for improving heat utilization rate to take off white device, including boiler, air-introduced machine, desulfurizing tower, deduster, chimney；Described device further includes fume afterheat absorbing mechanism, and fume afterheat absorbing mechanism includes condenser, primary heater and secondary heater；The condenser is arranged between air-introduced machine and desulfurizing tower, the condenser is internally provided with baffle, by barrier partitions at high temperature chamber and cryogenic chamber, is provided with condenser pipe in high temperature chamber and cryogenic chamber, condenser pipe is connected to thermal cycle pipeline, thermal cycle piping connection heat pump and heater；Fume afterheat is collected to heat boiler and discharge flue gas；The present invention makes full use of the thermal energy in flue gas, realizes thermal energy recycling, improves heat utilization rate, reaches good flue gas and takes off white effect.
Description
Technical field
The invention belongs to boiler smoke treatment process technical field more particularly to a kind of flue gas for improving heat utilization rate are de-
White device.
Background technique
Domestic sulfur removal technology 90% is using wet desulphurization, and wet method fume desulfurizing system absorption tower exports neat stress due to place
In wet saturation state, because temperature reduces during flowing through flue, chimney be discharged into atmosphere, part vapourous water and pollution in flue gas
Object can coagulate, and the slurries amount of liquid condition will increase, and have drop to descend slowly and lightly within a certain area, after deposition to ground drying
White gypsum spot, referred to as gypsum rain；Flue gas during throat is discharged into atmosphere because temperature reduces, part vapour in flue gas
State water and pollutant can coagulate, and form misty steam in throat, misty steam can shine because of sky background color and skylight,
The slight change of color occurs for the reasons such as viewing angle, forms coloured plume.
Existing conventional heating means (hot wind flue gas mixed heating method or MGGH) can only eliminate the view of white plume
Feel impression, moisture content can not be recycled, not can be reduced the discharge of pollutant and steam, entrained PM2.5, Hg, SO3 etc. are more in flue gas
It plants pollutant also not disappear because flue gas is oven-dried afterwards, for atmospheric environment, the gross contamination emission in flue gas is not
Reduce because of the improvement of vision, atmospheric environment can still be adversely affected, can not vaporous water in recovered flue gas, and white cigarette
A large amount of waste heats are had in gas, cannot recycle, thermal energy is caused to waste.
In the prior art, using flue gas take off white technical solution have it is following several:
Chinese patent application 201810208492.1 discloses one kind for the white system of boiler smoke qi exhaustion, and taking off white system includes
Chimney is successively arranged flue gas heater, desulfurization reactor, Benitration reactor, flue gas precooler, flue gas in chimney from the bottom to top
Cooler, flue gas take off white device, wherein the air inlet of chimney and the first inlet communication of flue gas precooler, flue gas precooler
First outlet and flue gas heater inlet communication, the outlet of the second import of flue gas precooler and desulfurization and denitrification reaction device
Connection, the second outlet and flue gas of flue gas precooler take off the inlet communication of white device；It includes warehouse, water in warehouse that flue gas, which takes off white device,
Flat to be provided with shelf, shelf will be divided into first chamber and second chamber, flocculation component be equipped in first chamber in warehouse, flocculate structure
Part is used for the particle agglomeration that will contain in flue gas, is equipped with the sedimentation component being connected to first chamber in second chamber, settles component
Particle sedimentation for that will reunite；Using it is above-mentioned take off white system realize it is white to effectively taking off for boiler smoke.
Chinese patent application discloses a kind of 201820210972.7 flue gases and takes off white device, including the first cooler, second
Cooler, desulfurizing tower, heater, chimney, former cigarette pass sequentially through the first cooler, the second cooler, desulfurizing tower, heater, cigarette
Chimney；The major advantage of the present apparatus is that have good removal effect to less than 5 μm microparticles below of partial size, and take off in flue gas white
With the concentration changeable device automatic frequency-conversion of flue gas in operational process, to obtain minimum operation energy consumption.
But it is above-mentioned the flue gas of use takes off white device in the prior art, in use, flue gas emission contains largely
Thermal energy, recovery utilization rate is low, causes a degree of thermal energy to waste, influences flue gas and take off white effect.
Summary of the invention
In view of the shortcomings of the prior art, the purpose of the present invention is to provide a kind of flue gases for improving heat utilization rate to take off white dress
It sets, by the condenser of setting, carries out the secondary heat release of high-temperature flue gas, benefit is recycled to thermal energy by thermal cycle pipeline and heater
With for the heating of boiler and the heating of discharge gas, raising heat utilization rate, it is good that flue gas takes off white effect.
The invention provides the following technical scheme:
It is a kind of improve heat utilization rate flue gas take off white device, including boiler, air-introduced machine, desulfurizing tower, deduster, chimney；
It is characterized in that, further including fume afterheat absorbing mechanism, fume afterheat absorbing mechanism includes condenser, primary heater and second
Heater；The condenser is arranged between air-introduced machine and desulfurizing tower, and the condenser is internally provided with baffle, passes through baffle point
It is divided into high temperature chamber and cryogenic chamber, the first condenser pipe is provided in high temperature chamber, the second condenser pipe is provided in cryogenic chamber,
First condenser pipe is connected to the first thermal cycle pipeline, and the second condenser pipe is connected to the second thermal cycle pipeline, the first thermal cycle piping connection
There are the first heat pump and primary heater；Second thermal cycle pipeline is connected with the second heat pump and secondary heater；Collect flue gas heat
Boiler and discharge flue gas are heated.
Preferably, the first thermal cycle pipeline and the second thermal cycle pipeline set Temperature Humidity Sensor, and set valve, described
Valve connects Temperature Humidity Sensor, and the Temperature Humidity Sensor connects PLC controller.
Preferably, the condenser is cylinder, and lower inside center is provided with motor, the transmission axis connection of motor
Screw rod, the screw rod middle position are connected with flapper by link block, and the flapper is semicircle；The active catch
Fixed baffle is provided with above plate, the fixed baffle is connected on condenser inner wall, and the fixed baffle is semicircle.
Preferably, it is coated with lubricating grease on the screw rod, increases the fluency of rotation.
Preferably, very close to each other above and below the flapper and fixed baffle；The flapper can follow screw rod to turn
It is dynamic；It is cryogenic chamber above the fixed baffle, is internally provided with the second condenser pipe, second heat of the second condenser pipe connection
Circulation line, the second thermal cycle pipeline are provided with the second heat pump；It is high temperature chamber below the flapper, is internally provided with the
One condenser pipe, first condenser pipe are connected to the first thermal cycle pipeline, and the first thermal cycle pipeline is provided with the first heat pump.
Preferably, the first thermal cycle pipeline connection primary heater, the primary heater use water water- to-water heat exchanger,
Boiler is heated；The second thermal cycle pipeline connection secondary heater, the secondary heater use aqueous vapor heat exchanger,
Gas heating to discharge.
Preferably, the water water- to-water heat exchanger uses heat regenerator, heats to boiler；The aqueous vapor heat exchanger is adopted
With indirect type heat exchanger is fluidly connected, the gas of discharge is heated.
Preferably, the condenser is condensed using segmented, by motor control flapper, and then controls having for ventilation
Area is imitated, when flapper and fixed baffle one circle of composition, breathing area 0, at this point it is possible to effectively extend High Temperature Gas
Body further increases condensation effect in the time of condenser internal stops, keeps flue gas heat release complete, reaches thermal energy high efficiente callback
Purpose；Flue gas is that (unit s), the effective area of ventilation are S (unit m to t in condenser residence time2)；Then smoke heat energy
Recovery efficiency μ meets following relationship:
S=π d/2；
In above-mentioned formula, α is relationship factor, value range 0.357-5.859；π is pi, and d is condenser inner wall
Diameter.
According to above-mentioned formula, cigarette can be estimated effectively by controlling the time of flue gas within the condenser and ventilation effective area
Gas heat energy recovery rate makes thermal energy recycling reach maximization.
Preferably, on the condenser on offer air inlet and air outlet；The condenser bottom offers diversion pipe,
Diversion pipe is connected to the first heat pump, and high-temperature condensation water is input to the first thermal cycle pipeline and is heated to boiler.
Preferably, the side of the condenser is additionally provided with control system, including DSC controller and wireless signal transmitting-receiving
Device, wireless signal transceiver are connect with PLC controller by conducting wire.
Preferably, the PLC controller includes display screen, processor, data monitoring module, self-adjustment module, switch
Adjustment module and alarm module.
Preferably, the data monitoring module, self-adjustment module, switch adjustment module connect processing with alarm module
Device, the processor connect display, and each section data of measurement are delivered to processor, the place by the data monitoring module
It manages device and each component is adjusted by self-adjustment module according to monitoring data, the processor adjusts each work by switch adjustment module
Make the opening and closing of link.
Preferably, first condenser pipe and the second condenser pipe are serpentine shape, and are metal material.
Preferably, the particle diameter of particulate matter meets in flue gas:
D=(μ V0H)1/2/ρWLT；
It is air viscosity Pas, v that wherein D, which is the particle diameter m, μ of flue gas particles,0Enter dedusting demisting dress for flue gas
The initial flow rate m/s, H set is that the height m, ρ of dedusting demister are smoke density mg/m3, W is the width of dedusting demister
M, L are the length m of dedusting demister.
Preferably, v0Value range be 6m/s~15m/s.
When particulate matter particle diameter meets above formula requirement, dust removing effects are best；Particulate matter in flue gas is deposited to 5mg/
m3Hereinafter, water content is reduced to 15% hereinafter, reach dust minimum discharge standard, while improving heat energy utilization, white effect is taken off
It is good.
In addition, the air-introduced machine that the high-temperature flue gas that boiler generates is connected through pipeline enters condenser, cigarette in above-mentioned technical proposal
Gas by condensation after temperature reduce, after through flue enter desulfurizing tower carry out desulfurization spray process；Flue gas after desulfurization
Enter deduster, dedusting demisting through pipeline；Aqueous vapor heat exchanger heat temperature raising of the flue gas through secondary heater after dedusting demisting；Cigarette
After gas lift temperature, the saturation degree of flue gas is reduced, and enters atmosphere by smoke stack emission.
Compared with prior art, the invention has the following advantages:
(1) a kind of flue gas for improving heat utilization rate of the present invention takes off white device, passes through the flapper and fixed gear of setting
The effective area of the adjustable ventilation of plate further increases cold to extend high-temperature gas in the time of condenser internal stops
Solidifying effect, keeps flue gas Exotherm Time longer, improves heat utilization rate, improves flue gas and takes off white effect.
(2) a kind of flue gas for improving heat utilization rate of the present invention takes off white device, passes through the flapper and fixed gear of setting
Plate realizes that thermal energy staged recycles two chambers are divided into inside condenser, and the waste heat of high temperature chamber recycling is used for boiler
Heating, the waste heat of cryogenic chamber recycling reach making full use of with good flue gas except white for thermal energy for discharging flue gas.
(3) a kind of flue gas for improving heat utilization rate of the present invention takes off white device, and the present apparatus is rationally distributed, and investment is greatly reduced
Cost can reduce the 30%-40% of system entirety investment amount.
(4) a kind of flue gas for improving heat utilization rate of the present invention takes off white device, passes through It can be effective
By the time of control flue gas within the condenser and ventilation effective area, the smoke heat energy rate of recovery is estimated, reach thermal energy recycling
It maximizes；Tradition is except the promotion of white device energy-saving efficiency 40%-60%, 2.1g/kWh-5.3g/kWh relatively.
(5) a kind of flue gas for improving heat utilization rate of the present invention takes off white device, when particulate matter particle diameter meets D=(μ
V0H)1/2When/ρ WLT, dust removing effects are best；Particulate matter in flue gas is deposited to 5mg/m3Hereinafter, water content be reduced to 15% with
Under, reach dust minimum discharge standard, while improving heat energy utilization, it is good to take off white effect.
(6) a kind of flue gas for improving heat utilization rate of the present invention takes off white device, and flue gas, which first condenses, can make design of heat exchanger body
Product reduces；It reduces into tower heat, reduces evaporated quantity of water, reduce humidity of flue gas.The advantageous desulfurization of desulfurizing tower flow velocity is reduced, heat returns
It is strong with extremely outlet, high fume temperature, flue gas hoisting power；Visual pollution eradicating efficacy is good；Flue gas collateral resistance increases larger；Operation
Reliably, maintenance cost is low.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is system schematic of the invention.
Fig. 2 is condenser structure schematic diagram of the invention.
Fig. 3 is flapper schematic diagram of the invention.
Fig. 4 is fixed baffle schematic diagram of the invention.
Fig. 5 is control system flow chart of the invention.
In figure: 1, boiler；2, air-introduced machine；3, condenser；4, desulfurizing tower；5, deduster；6, primary heater；7, chimney；
8, secondary heater；9, the first thermal cycle pipeline；10, the second thermal cycle pipeline；11, the first heat pump；12, the second heat pump；301,
Air inlet；302, gas outlet；303, motor；304, screw rod；305, fixed baffle；306, flapper；307, the first condensation
Pipe；308, the second condenser pipe；309, link block；3010, diversion pipe.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode.Obviously, described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below to protect
The scope of the present invention of shield, but it is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
Embodiment one:
As shown in Figs. 1-5, a kind of flue gas improving heat utilization rate takes off white device, including boiler 1, air-introduced machine 2, desulfurizing tower
4, deduster 5, chimney 7；It further include fume afterheat absorbing mechanism, fume afterheat absorbing mechanism includes condenser 3, primary heater
6 and secondary heater 8；The condenser 3 is arranged between air-introduced machine 2 and desulfurizing tower 4, and the condenser 3 is internally provided with gear
Plate is provided with the first condenser pipe 307 by barrier partitions at high temperature chamber and cryogenic chamber in high temperature chamber, in cryogenic chamber
It is provided with the second condenser pipe 308, the first condenser pipe 307 is connected to the first thermal cycle pipeline 9, the second heat of the second condenser pipe 308 connection
Circulation line 10, the first thermal cycle pipeline 9 are connected with the first heat pump 11 and primary heater 6；The connection of second thermal cycle pipeline 10
There are the second heat pump 12 and secondary heater 8；Flue gas heat is collected to heat boiler 1 and discharge flue gas.
The first thermal cycle pipeline 9 and the second thermal cycle pipeline 10 set Temperature Humidity Sensor, and set valve, the valve
Temperature Humidity Sensor is connected, the Temperature Humidity Sensor connects PLC controller；The preferably temperature of control smoke evacuation, reaches enhancing
Flue gas removes white purpose.
The condenser 3 is cylinder, and lower inside center is provided with motor 303, the transmission axis connection of motor 303
Screw rod 304,304 middle position of screw rod are connected with flapper 306 by link block 309, and the flapper 306 is half
It is round；The top of the flapper 306 is provided with fixed baffle 305, and the fixed baffle 305 is connected to 3 inner wall of condenser
On, the fixed baffle 305 is semicircle；Pass through the flapper 306 of setting and having for the adjustable ventilation of fixed baffle 305
It imitates area and further increases condensation effect to extend high-temperature gas in the time of 3 internal stops of condenser, make flue gas heat release
Time is longer, improves heat utilization rate, improves flue gas and takes off white effect.
It is coated with lubricating grease on the screw rod 304, increases the fluency of rotation.
The flapper 306 and about 305 fixed baffle are very close to each other；The flapper 306 can follow screw rod
304 rotations；The top of the fixed baffle 305 is cryogenic chamber, is internally provided with the second condenser pipe 308, second condensation
Pipe 308 is connected to the second thermal cycle pipeline 10, and the second thermal cycle pipeline 10 is provided with the second heat pump 12；The flapper 306
Lower section is high temperature chamber, is internally provided with the first condenser pipe 307, and first condenser pipe 307 is connected to the first thermal cycle pipeline 9,
First thermal cycle pipeline 9 is provided with the first heat pump 11；By the flapper 306 and fixed baffle 305 of setting in condenser 3
Part realizes that thermal energy staged recycles at two chambers, and the waste heat of high temperature chamber recycling is heated for boiler 1, low temperature cavity
The waste heat of room recycling reaches making full use of with good flue gas except white for thermal energy for discharging flue gas.
The first thermal cycle pipeline 9 is connected to primary heater 6, and the primary heater 6 uses water water- to-water heat exchanger, right
Boiler 1 is heated；The second thermal cycle pipeline 10 is connected to secondary heater 8, and the secondary heater 8 is changed using aqueous vapor
Hot device heats the gas of discharge.
The water water- to-water heat exchanger uses heat regenerator, heats to boiler 1；The aqueous vapor heat exchanger uses fluid
Indirect type heat exchanger is connected, the gas of discharge is heated；Achieve the purpose that thermal energy ladder recycles, heat utilization rate increases greatly
Add.
Air inlet 301 and gas outlet 302 are offered on the condenser 3；3 bottom of condenser offers diversion pipe
3010, diversion pipe 3010 is connected to the first heat pump 11, and high-temperature condensation water is input to the first thermal cycle pipeline 9 and is added to boiler 1
Heat.
The side of the condenser 3 is additionally provided with control system, including DSC controller and wireless signal transceiver, wirelessly
Signal transceiver is connect with PLC controller by conducting wire；It family can be used remotely controls flue gas and take off white device, it is de- to increase flue gas
The degree of automation of white equipment.
The PLC controller includes display screen, processor, data monitoring module, self-adjustment module, switch adjustment module
And alarm module.
The data monitoring module, self-adjustment module, switch adjustment module connect processor, the place with alarm module
Manage device and connect display, each section data of measurement are delivered to processor by the data monitoring module, the processor according to
Monitoring data adjust each component by self-adjustment module, and the processor adjusts each working link by switch adjustment module
It opens and closes.
First condenser pipe 307 and the second condenser pipe 308 are serpentine shape, and are aluminum alloy material, heat-conducting effect
It is good.
In above-mentioned technical proposal, the air-introduced machine 2 that the high-temperature flue gas that boiler 1 generates is connected through pipeline enters condenser 3, cigarette
Gas is reduced by temperature after condenser 3, after enter desulfurizing tower 4 through flue and carry out desulfurization spray process；After desulfurization
Flue gas enters deduster 5, dedusting demisting through pipeline；Flue gas after dedusting demisting is heated through the aqueous vapor heat exchanger of secondary heater 8
Heating；After flue gas heating, the saturation degree of flue gas is reduced, and drains into atmosphere by chimney 7.
Embodiment two:
The difference is that, the condenser 3 is condensed using segmented with embodiment one, passes through 303 control activity of motor
Baffle 306, and then the effective area of ventilation is controlled, when flapper 306 and one circle of composition of fixed baffle 305, ventilation
Area is 0, at this point it is possible to effectively extend high-temperature gas in the time of 3 internal stops of condenser, further increases condensation effect,
Keep flue gas heat release complete, achievees the purpose that thermal energy high efficiente callback；Flue gas is that (unit s) leads to t in 3 residence time of condenser
The effective area of gas is S (unit m2)；Then smoke heat energy recovery efficiency μ meets following relationship:
S=π d/2；
In above-mentioned formula, α is relationship factor, value range 0.357-5.859；π is pi, and d is 3 inner wall of condenser
Diameter.
According to above-mentioned formula, cigarette can be estimated effectively by controlling time and ventilation effective area of the flue gas in condenser 3
Gas heat energy recovery rate makes thermal energy recycling reach maximization.
Embodiment three:
The difference is that, the particle diameter of particulate matter meets in the flue gas with embodiment one, two:
D=(μ V0H)1/2/ρWLT；
It is air viscosity Pas, v that wherein D, which is the particle diameter m, μ of flue gas particles,0Enter dedusting demisting dress for flue gas
The initial flow rate m/s, H set is that the height m, ρ of dedusting demister are smoke density mg/m3, W is the width of dedusting demister
M, L are the length m of dedusting demister.
v0Value range be 6m/s~15m/s.
When particulate matter particle diameter meets above formula requirement, dust removing effects are best；Particulate matter in flue gas is deposited to 5mg/
m3Hereinafter, water content is reduced to 15% hereinafter, reach dust minimum discharge standard, while improving heat energy utilization, white effect is taken off
It is good.
Working principle: flue gas by furnace generate after, sequentially enter air-introduced machine 2, condenser 3, desulfurizing tower 4, deduster 5,
Primary heater 6 is finally discharged by chimney 7；Flue gas enters after condenser 3, and motor 303 drives flapper 306 to rotate, will
Flue gas barrier meets the first condenser pipe 307 in high temperature chamber, flue gas, and heat is transmitted by the first condenser pipe 307, is followed through the first heat
Boiler 1 is heated by water water- to-water heat exchanger behind endless tube road 9 and the first heat pump 11, reaches the recycling of thermal energy；Cigarette later
Temperature degree is declined, and 303 intermittent movement of motor drives flapper 306 to rotate, and flue gas enters cryogenic chamber, and flue gas meets second
Heat is transmitted by the second condenser pipe 308, passes through water after the second thermal cycle pipeline 10 and the second heat pump 12 by condenser pipe 308
Gas heat exchanger heats the flue gas of discharge；Later, desulfurization and dedusting is carried out, discharge after flue gas is heated, flue gas takes off white effect
It is good, reach flue gas emission national standard；The efficient recycling of thermal energy is realized simultaneously；Flue gas, which first condenses, can make design of heat exchanger
Volume-diminished；It reduces into tower heat, reduces evaporated quantity of water, reduce humidity of flue gas；Reduce the advantageous desulfurization of 4 flow velocity of desulfurizing tower, heat
It measures reuse extremely to export, high fume temperature, flue gas hoisting power is strong.
The device obtained through the above technical solution is that a kind of flue gas of raising heat utilization rate takes off white device, passes through setting
Condenser 3, carry out the secondary heat release of high-temperature flue gas, by thermal cycle pipeline and heater to heat energy recycle, be used for boiler 1
Heating and discharge gas heating, improve heat utilization rate, visual pollution eradicating efficacy is good；Flue gas collateral resistance increases larger；
Reliable for operation, maintenance cost is low.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied；All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of flue gas for improving heat utilization rate takes off white device, including boiler (1), air-introduced machine (2), desulfurizing tower (4), deduster
(5), chimney (7)；It is characterized in that, further include fume afterheat absorbing mechanism, fume afterheat absorbing mechanism include condenser (3),
Primary heater (6) and secondary heater (8)；The condenser (3) is arranged between air-introduced machine (2) and desulfurizing tower (4), described
Condenser (3) is internally provided with baffle, by barrier partitions at high temperature chamber and cryogenic chamber, is provided with first in high temperature chamber
Condenser pipe (307) is provided with the second condenser pipe (308) in cryogenic chamber, and the first condenser pipe (307) is connected to the first thermal cycle pipeline
(9), the second condenser pipe (308) is connected to the second thermal cycle pipeline (10), and the first thermal cycle pipeline (9) is connected with the first heat pump (11)
With primary heater (6)；Second thermal cycle pipeline (10) is connected with the second heat pump (12) and secondary heater (8)；Collect flue gas
Heat heats boiler (1) and discharge flue gas.
2. a kind of flue gas for improving heat utilization rate takes off white device according to claim 1, which is characterized in that the condenser
It (3) is cylinder, lower inside center is provided with motor (303), the transmission shaft connection wire rod (304) of motor (303), institute
It states screw rod (304) middle position to be connected with flapper (306) by link block (309), the flapper (306) is semicircle
Shape；It is provided with fixed baffle (305) above the flapper (306), the fixed baffle (305) is connected to condenser
(3) on inner wall, the fixed baffle (305) is semicircle.
3. a kind of flue gas for improving heat utilization rate according to claim 1 or claim 2 takes off white device, which is characterized in that the work
Dynamic baffle (306) and fixed baffle (305) are very close to each other up and down；The flapper (306) can follow screw rod (304) to turn
It is dynamic；It is cryogenic chamber above the fixed baffle (305), is internally provided with the second condenser pipe (308), second condenser pipe
(308) it is connected to the second thermal cycle pipeline (10), the second thermal cycle pipeline (10) is provided with the second heat pump (12)；The flapper
(306) lower section is high temperature chamber, is internally provided with the first condenser pipe (307), and first condenser pipe (307) is connected to the first heat and follows
Endless tube road (9), the first thermal cycle pipeline (9) are provided with the first heat pump (11).
4. according to claim 1 or a kind of 3 flue gases for improving heat utilization rate take off white device, which is characterized in that described the
One thermal cycle pipeline (9) be connected to primary heater (6), the primary heater (6) use water water- to-water heat exchanger, to boiler (1) into
Row heating；The second thermal cycle pipeline (10) is connected to secondary heater (8), and the secondary heater (8) is exchanged heat using aqueous vapor
Device heats the gas of discharge.
5. a kind of flue gas for improving heat utilization rate takes off white device according to claim 1, which is characterized in that the condenser
(3) air inlet (301) and gas outlet (302) are offered on；Condenser (3) bottom offers diversion pipe (3010), leads
Flow tube (3010) is connected to the first heat pump (11), and high-temperature condensation water is input to the first thermal cycle pipeline (9) and is added to boiler (1)
Heat.
6. according to claim 1 or 5 it is described it is a kind of improve heat utilization rate flue gas take off white device, which is characterized in that it is described cold
The side of condenser (3) is additionally provided with control system, including DSC controller and wireless signal transceiver, wireless signal transceiver with
PLC controller is connected by conducting wire.
7. a kind of flue gas for improving heat utilization rate takes off white device according to claim 6, which is characterized in that the PLC control
Device processed includes display screen, processor, data monitoring module, self-adjustment module, switch adjustment module and alarm module.
8. a kind of flue gas for improving heat utilization rate takes off white device according to claim 7, which is characterized in that the data prison
It surveys module, self-adjustment module, switching value sequent modular and connects processor with alarm module, the processor connects display,
Each section data of measurement are delivered to processor by the data monitoring module, and the processor passes through automatic according to monitoring data
Adjustment module adjusts each component, and the processor adjusts the opening and closing of each working link by switch adjustment module.
9. according to claim 1-5 it is described it is a kind of improve heat utilization rate flue gas take off white device, which is characterized in that described first
Condenser pipe (307) and the second condenser pipe (308) are serpentine shape, and are metal material.
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| CN201910640411.XA CN110388652A (en) | 2019-07-16 | 2019-07-16 | It is a kind of improve heat utilization rate flue gas take off white device |
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| CN201910640411.XA CN110388652A (en) | 2019-07-16 | 2019-07-16 | It is a kind of improve heat utilization rate flue gas take off white device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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