CN102410549A - Composite phase change heat exchange system for flue gas heat recovery of boiler - Google Patents
Composite phase change heat exchange system for flue gas heat recovery of boiler Download PDFInfo
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- CN102410549A CN102410549A CN2011103545618A CN201110354561A CN102410549A CN 102410549 A CN102410549 A CN 102410549A CN 2011103545618 A CN2011103545618 A CN 2011103545618A CN 201110354561 A CN201110354561 A CN 201110354561A CN 102410549 A CN102410549 A CN 102410549A
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Abstract
The invention discloses a composite phase change heat exchange system for flue gas heat recovery of boiler, comprising an original coal saving device of the boiler and an air pre-heater, a dust remover and a desulfurization tower; a heat conducting oil heater, a stage I composite phase changer, a stage II composite phase changer, a stage III composite phase changer, and a temperature adjusting system matched with the stage I, state II and stage III composite phase changers are disposed in the flue; the temperature adjusting system can be used for conveniently adjusting the wall surface temperature of the phase change heat exchanger; the heat conducting oil is used as the heat source of the stage III phase change heat exchanger, so as to improve the flue purity and reach the flue discharge requirement. The invention can solve the difficult problem that it is difficult to dispose the evaporation section of the heat exchange round tube in vertical flue or oblique flue, so as to realize the integrated compact arrangements of the evaporation section and condensation section of the phase change heat exchanger; the disadvantage of GGH is overcome; the hazard degree of low-temperature corrosion is decreased, so as to realize the targets of energy saving, water saving and emission reduction.
Description
Technical field
The present invention relates to a kind of device of boiler heat-transfer technical field, is a kind of composite phase-change heat-exchange system that residual heat from boiler fume reclaims that is used for specifically.
Background technology
Present domestic heat-engine plant wet flue gas desulfurization (Flue Gas Desulfurization; Be called for short FGD) employing gas-to-gas heat exchanger (Gas Gas Heater; Accounting for more than 80% abbreviation GGH); If calculate by annual newly-increased FGD capacity 3,000 ten thousand kW, the direct cost of equipment that GGH is installed just reaches about 1,100,000,000 yuan.Other correlative charges comprises: because of the booster fan that GGH increases is installed, the control that the control system increases is counted, and increases flue length and GGH support and corresponding construction and installation expense etc., and its summation accounts for 15 %～20 % of FGD gross investment.Installation GGH is about 1200Pa to the pressure drop of flue gas, in order to overcome these resistances, must increase the pressure head of booster fan, and this just makes the operating cost of FGD system increase greatly.
Absorption tower flue gas after being purified in the wet method fume desulfurizing system (being called for short clean flue gas) temperature is generally at 47 ± 5 ℃; At present general way is GGH to be set utilize the former flue gas of high temperature with about clean flue gas heating to 82 ℃, satisfies the requirement of power industry standard DL/T 5196-2004 " Coal,steam plant with FGD designing technique rules ".Clean flue gas is flowed through after the GGH heating; The cigarette temperature still is lower than its acid dew point (generally between 90 ℃～110 ℃); Be that GGH generally moves below acid dew point; Therefore can produce the concentrated acid liquid of a large amount of thickness at the cold junction of GGH, these acid solutions not only have very strong corrosiveness to heat exchange element and the housing of GGH, and can adhere to the flying dust in a large amount of flue gases; In addition, can fouling after the small slurries drop that passes demister evaporates on the surface of heat exchange element, these solids can stop up the passage of heat exchange element, further increase the pressure drop of GGH.Also possibly cause because of pickup seriously causes booster fan and vibrate excessive problem.Fig. 1 is FGD schematic flow sheet: A, B-booster fan import and export, the former smoke inlet of C-desulfurizing tower, the clean exhanst gas outlet of D-desulfurizing tower; E-desulphurization system outlet, F, G from boiler 1 come flue gas, H, I-are from the flue gas of boiler 2; M1 is former gas baffle door; M2 is the by-pass damper door, and M3 is the cold flue gas baffle door, and N is a booster fan.
The clean flue gas intensification technology of in present known wet desulphurization, using mainly contains following several kinds:
One, bypass heating
The bypass mode of heating is in the flue in module downstream, absorption tower, and the former flue gas that the untreated temperature of part is about 130 to 150 ℃ and washing back temperature are that 40 to 65 ℃ clean flue gas mixes, reach the purpose that heats wet flue gas.
The major limitation of bypass heating means is, the untreated flue gas of bypass can reduce total desulfuration efficiency of FGD system, and therefore, this mode of heating is limited in the FGD system that is applied in desulfuration efficiency not too high (being lower than 80%).
It should be noted that the bypass heating has formed the environment of a heavy corrosion in cold and hot flue gas mixed zone.
Two, circulation heating
Loop heating system is that the heat of the module upper reaches, absorption tower untreated flue gas is passed to the flue gas after the processing through heat-exchanger rig.Common has two kinds: swinging GGH and hydrophily formula GGH.
Common swinging GGH, its shortcoming is: 1, owing to there be the leakage problem of former flue gas to clean flue gas in the self structure reason, can pollute the clean flue gas after the wet desulphurization, reduce desulfuration efficiency; 2, swinging GGH belongs to the monoblock type heat exchanger, and the relative heat exchanger in position of flue turnover is fixed, can't flexible arrangement; 3,, main unit load can't guarantee the clean exhanst gas outlet temperature that requires when reducing; 4, the existence of all kinds of moving equipment makes energy consumption very high.
Common hydrophily formula GGH; It utilizes the water under high pressure of reciprocation cycle to carry out heat exchange in former fume side and clean fume side; When underload, can also be aided with Steam Heating; Therefore can overcome first three shortcoming that swinging GGH exists, but the energy consumption of flow, high-lift water circulating pump is still very high greatly.
Three, online heater
Adding heat medium can be steam or hot water.As adopt low-pressure steam that steam turbine discharges to restrain the saturated flue gas that adds behind the thermally desulfurizing through light pipe or fin, and be commonly referred to steam-flue gas heater (SGH), be called for short steam heater.The operation of SGH design and running is simpler, but also subjects to corrosion and obstruction, and steam consumption is big, and operating cost is high.The reheater of the similar tubular type GGH of its corrosive environment of living in, still, because the heat medium that adds that SGH adopts is the higher steam of temperature, the tube bank surface temperature is higher, and corrosive environment relaxes to some extent.If can remain SGH heating surface temperature and be higher than 120 ℃, and the flue gas saturation degree is reduced to below 80%, can obviously reducing, smoke treatment has the successful Application carbon steel pipe to do the report of heat exchange element under this operating mode to the corrosion rate of SGH.The maximum shortcoming of SGH is that steam consumption quantity is big.
Four, hot-air directly heats
The direct heater of hot-air is also referred to as the surrounding air heater.Hot-air directly heats similar online heating, and the heat medium that adds in the pipe also is a steam, different is flow through finned-tube bundle outer be not clean flue gas but air.The hot water that boiler is supplied with should not be as adding heat medium because temperature is lower.Steam has improved flue-gas temperature like this with spraying into behind air heat to 175～200 ℃ in the flue gas stream, has also increased the mass flow of flue gas, as will flue-gas temperature being promoted 30 ℃, needs 200 ℃ hot air flowrate to be about 12% of flue gas flow.Owing to increased flue gas volume, the size of downstream flue and chimney also need strengthen.
The hot air major advantage is that the air heat tube bank is in the stream of ambient air, can adopt carbon steel to make tube bank, and another advantage is; To transformation project; Owing to increased former flue gas smoke evacuation volume, improved the chimney breast flue gas flow rate, strengthened The smoke-plume spreading; Owing to reduced the water smoke content in the flue gas, can reduce the blackness of plume.
Though this heater tube bank can be adopted inexpensive carbon steel pipe, operating cost is apparently higher than online heater, because need the gas gross (air of flue gas and heating) of heating big, heater blower also need consume big electric energy.
Five, directly burning heating
Directly the burning heating is at combustion chamber internal combustion Low Sulfur Fuel Oil or natural gas near the absorption tower exhaust pass, and the hot flue gas after the burning is blasted in the clean flue gas of desulfurization, promotes flue-gas temperature.Because directly the hot flue-gas temperature of burning generation is more much higher than direct-fired hot-air, so only need the hot flue gas of less volume.So just reduced the capacity of heater blower, the flue gas total release also increases seldom.Shortcoming is to need consume fuel, and in addition, fuel combustion has increased the SO of smoke evacuation
XConcentration has reduced the total desulfuration efficiency of system.
Patent 200610037683.3 has been announced a kind of separated smoke re-heater and heat-exchange method thereof.This technological structure principle chart is shown in accompanying drawing 2, among the figure: former flue gas heat exchange device 1, vapor uptake 2, clean flue gas heat exchange device 3, water down-comer 4, auxiliary heater 5, water pump 6.This technology is divided into two independent parts with separated smoke re-heater; Former flue gas and clean flue gas are isolated separately fully; Stopped of the leakage of former flue gas, can select to be fit to the material of its working environment economically separately so that the flexible arrangement of equipment on flue is convenient to clean flue gas; As supplemental heat source, can under the underload situation, still guarantee higher clean exhanst gas outlet temperature with steam; Energy consumption is lower, under the Natural Circulation situation even not, consumes.The described former flue gas heat exchange device 1 of this technology, its essence is exactly the evaporator section of the described phase-change heat-exchanger of poplar this Mr. Lip river, is equivalent to the evaporator section of I level phase-change heat-exchanger in the patent 201010527948.4; Clean flue gas heat exchange device 3, its essence is exactly the condensation segment of phase-change heat-exchanger.It is not so-called separate heat pipe.The described situation under Natural Circulation of this flow process, essence are exactly this of poplar Mr.'s Lip river phase-change heat-exchanger flow process.This technology has been considered clean flue gas acid dew point problem of higher; Owing to keep away the cold end corrosion of unavoidable clean flue gas; So proposed the material that former flue gas heat exchange device (phase-change heat-exchanger evaporator section) and clean flue gas heat exchange device (phase-change heat-exchanger condensation segment) will select to be fit to its working environment separately, this is correct.This technological shortcoming is: still than higher, the waste heat recovery effect is bad through the former flue-gas temperature after the heat exchange of former flue gas heat exchange device; Because it is high more to be sent to the saturated-steam temperature of clean flue gas heat exchange device, favourable more to the operation of clean flue gas heat exchange device, but the waste heat of the former flue gas of boiler will can not get efficient utilization before the desulfurizing tower.
Patent 201010527948.4 has announced that clean flue gas after a kind of wet desulphurization heats up and the composite phase-change heat-exchanger rig of waste heat recovery.The flow chart of this device is shown in accompanying drawing 3.The structural representation of its I level phase-change heat-exchanger, II level phase-change heat-exchanger, III level phase-change heat-exchanger condensation segment such as Fig. 4, Fig. 5, shown in Figure 6.Among Fig. 3: air preheater 1, air channel 2, I level phase-change heat-exchanger 3, deduster 4, air-introduced machine 5, desulfurization blower fan 6, bypass flue 7, II level phase-change heat-exchanger 8, desulfurizing tower 9, III level phase-change heat-exchanger 10, chimney 11, constant temperature humidifier 12, steam turbine 13, oxygen-eliminating device 14, electrical control cubicles 15.Among Fig. 4, Fig. 5 110,120,210,220 is the fin pipe.Described II level phase-change heat-exchanger evaporator section has been considered when below acid dew point, moving should select corrosion-resistant material for use, and this is rational.Described III level phase-change heat-exchanger condensation segment; Be that extracted steam from turbine is become saturated vapor through humidification; Send into the clean flue gas of heating in the structure shown in Figure 6, such as the phase-change working substance pressure that improves the former flue gas heat exchange device in 200610037683.3, the saturated-steam temperature that just can make out improves; Send into condensation in the clean flue gas heat exchange device again, obviously clean flue gas heat exchange device is realized accomplishing consistent with the heat exchange of III level phase-change heat-exchanger condensation segment.
The advantage of patent 201010527948.4 clearly, i.e. setting through I level phase-change heat-exchanger, II level phase-change heat-exchanger, high efficiente callback fume afterheat, and reduced the water consumption of desulphurization system.But its shortcoming also clearly: promptly the evaporator section of I level phase-change heat-exchanger, II level phase-change heat-exchanger, condensation segment must split-type design, and institute takes up space big; The phase-change heat-exchanger evaporator section can only be arranged in the horizontal flue, then can't use for vertical flue, and the inclination flue is arranged also comparatively difficulty; Condensation segment comprises that partly so-called drum is the top certain position that shell-and-tube heat exchanger must be arranged in evaporator section, could rely on high-order official post condensate liquid to be recovered to the evaporator section porch; When flue gas acid dew point changes, only can rely on bypass of shell-and-tube heat exchanger demineralized water or air bypass to regulate, the adjusting surplus is little; In the patent to 200610037683.3 profiling error; III level phase-change heat-exchanger condensation segment is high because of the flue gas saturation degree that gets into, and can not avoid cold end corrosion, must consider to select for use corrosion-resistant material; Promptly with 200610037683.3 in clean flue gas heat exchange device 3 the same, and steam consumption is big.。
Therefore; How to overcome the shortcoming of above-mentioned technology; The defective of cancellation because of using GGH to produce solves vertical flue or inclination flue and arranges fin pipe evaporator section problem of difficult, and the difficult problem of phase-change heat-exchanger evaporator section, the split type layout of condensation segment; Realize phase-change heat-exchanger evaporator section, the integrated compact Layout of condensation segment; Realize complex phase-change heat exchanger truly, and reduce cold end corrosion harm, become the consumption that rationally utilizes residual heat from boiler fume, reduce process of wet desulphurization water, satisfy pursuing one's goal that standard limit of smog release requires.
Summary of the invention
The object of the invention is exactly to solve the problem that above-mentioned prior art exists; The defective of elimination because of using GGH to produce; Solve vertical flue or inclination flue and arrange heat exchange pipe evaporator section problem of difficult; And phase-change heat-exchanger evaporator section, condensation segment must split type layout a difficult problem, realize phase-change heat-exchanger evaporator section, the integrated compact Layout of condensation segment, realize incorporate complex phase-change heat exchanger truly; And the extent of injury of reduction cold end corrosion, reach purpose energy-conservation, that economize on water, reduce discharging.
The objective of the invention is to realize through following measure:
Be used for the composite phase-change heat-exchange system that residual heat from boiler fume reclaims; Comprise the original economizer of boiler 22, air preheater 23, deduster 26, desulfurizing tower 30, and respectively connect pipeline and control instrument, valve; It is characterized in that: also be provided with hotline heater 43 in the flue, at least one I level complex phase-change heat exchanger 24, at least one II level complex phase-change heat exchanger 29, at least one III level complex phase-change heat exchanger 31;
And the supporting thermoregulating system of the outer I level complex phase-change heat exchanger 24 that is provided with of flue: comprise heat exchanger 34, I level thermoregulating system 35, I level pump 33, the self-con-tained unit 36 that matches;
The supporting thermoregulating system of the outer II level complex phase-change heat exchanger 29 that is provided with of flue: comprise II level thermoregulating system 40, II level pump 39;
With III level complex phase-change heat exchanger 31 supporting independently thermoregulating systems, or adopt I level thermoregulating system 35 to control to adjust;
Said I level, II level, III level complex phase-change heat exchanger are respectively equipped with the casing between interior heat exchanger tube, sleeve pipe, first tube sheet, second tube sheet and the tube sheet; I level, II level and III level complex phase-change heat exchanger form three journey integral structures of the outer shell side of cover tube side and sleeve pipe between interior heat exchanger tube tube side, interior heat exchanger tube and sleeve pipe respectively, and three grades of complex phase-change heat exchangers are set in turn in the exhaust gases passes between boiler and the cigarette fontanel.
The phase-change working substance loop of I level complex phase-change heat exchanger 24 wherein: cover tube side, heat exchanger 34 and I level thermoregulating system 35 by I level pump 33, I level complex phase-change heat exchanger 24 are in turn connected to form the loop by the road;
The phase-change working substance loop of II level complex phase-change heat exchanger 29 wherein: cover tube side and II level thermoregulating system 40 by II level pump 39, II level complex phase-change heat exchanger 29 are in turn connected to form the loop by the road;
The loop of exchanging work mutually of III level complex phase-change heat exchanger 31 wherein: cover tube side and I level thermoregulating system by I level pump 33, III level complex phase-change heat exchanger 31 transfer 35, are in turn connected to form the loop by the road.
Described I level complex phase-change heat exchanger 24 mainly comprises the casing 24-5 between interior heat exchanger tube 24-1, sleeve pipe 24-2, the first tube sheet 24-3, the second tube sheet 24-4 and the tube sheet.Shell side casing between the first outer tube sheet 24-3 of sleeve pipe is set in case of necessity.
The sleeve pipe and the working media between the interior heat exchanger tube of described I level composite phase-change heat exchange 24 are water or other suitable working fluid, are that example is explained with water among the present invention.Saturation water is squeezed into the sleeve pipe of I level complex phase-change heat exchanger 24 and the cavity between the interior heat exchanger tube through I level frequency modulation pump 33, carries out heat exchange with the high-temperature flue gas of interior heat exchanger tube 24-1 and produces steam, and this high temperature side is equivalent to evaporimeter; The outer cold air 41 of carbonated drink mixture and sleeve pipe carries out heat exchange; Play cooling effect, low temperature side is equivalent to condenser, carries out steam or the carbonated drink mixture that heat exchange produces with high-temperature flue gas; After getting into heat exchanger 34 coolings after coming out; Saturated condensed water gets into I level thermoregulating system and transfers 35, squeezes into I level complex phase-change heat exchanger 24 through I level frequency modulation pump 33 again, thereby forms the phase-change working substance closed circuit.Send into the original air preheater of boiler through the cold air 41 of heating and continue heating.
The steam that described I level complex phase-change heat exchanger 24 comes out is through heat exchanger 34 heats cold fluids 37, and the condensed water of generation is got back to I level thermoregulating system and transferred 35, through the follow-up workshop section of the hot fluid 38 confessions use of heat exchanger 34 heating.
Said I level thermoregulating system 35 comprises expansion tank 35-4, I level heater 35-3 and pressure regulation part; The pressure-regulating portion branch comprises pressure regulator 35-2 and nitrogen cylinder 35-1.When flue gas acid dew point changes; For example increase, regulate the pressure regulation part, the air pressure among the expansion tank 35-4 is suitably increased; Start I level heater 35-3; Because pressure increases, original saturation water becomes saturation state from undersaturated condition through heating after, and the adjusting temperature value is higher than 5 ℃ of acid dew points～be advisable more than 10 ℃ with saturated water temperature.
The interior heat exchanger tube of described I level complex phase-change heat exchanger 24, sleeve pipe are as the measure that preferably can adopt ripe augmentation of heat transfer, such as adopting augmentation of heat transfer structures such as finned pipe, spiral grooved tube.
What pass through between the interior heat exchanger tube of described I level complex phase-change heat exchanger 24 and sleeve pipe is phase-change working substance; High-temperature flue gas is walked interior heat exchanger tube tube side or is walked the outer shell side of sleeve pipe; Cold fluid to be heated is corresponding walks an other side, thereby realizes effective combination of an equipment, three kinds of heat transferring mediums.
When working media was high-temperature flue gas in the interior heat exchanger tube of described I level complex phase-change heat exchanger 24, the working media of the shell side that sleeve pipe is outer was a cold fluid to be heated; When working media was a cold fluid to be heated in the heat exchanger tube in described, the working media of the shell side that sleeve pipe is outer was a high-temperature flue gas.
The I level thermoregulating system 35 that the present invention adopts can be regulated the phase-change working substance temperature according to flue gas acid dew point, and then control phase-change heat-exchanger wall surface temperature, and assurance I level complex phase-change heat exchanger 24 is effectively avoided the cold end corrosion of flue gas, regulates flexible.
Described cold fluid, medium can be condensed water, conduction oil or other suitable processing mediums of air, plant condenser generation.
Heat exchanger tube 24-1 and sleeve pipe 24-2 material can be selected metal or nonmetallic materials or composite in described, and material should be the good conductor of heat.Can select carbon steel or stainless steel material by routine.
One of nucleus equipment of the present invention is an I level complex phase-change heat exchanger 24; By heat exchanger tube 24-1, at least one the sleeve pipe 24-2 that matches, the first tube sheet 24-3, the second tube sheet 24-4 at least one, and the compositions such as casing 24-5 between first tube sheet and second tube sheet.Described casing 24-5 can be the structure of cylinder type, rectangle or other curved face types.Shell side casing between the first outer tube sheet 24-3 of sleeve pipe is set in case of necessity.
Between heat exchanger tube 24-1 and the sleeve pipe 24-2 corresponding supporting construction can be set in described, as preferably, supporting construction and can adopt hot good conductor material both connection.
Heat exchanger tube 24-1 adopts pipe or hollow flat tube or other curved surface cavity body structures in described, and correspondingly, sleeve pipe 24-2 also adopts the structure that matches.Such as interior heat exchanger tube, when sleeve pipe adopts the thin walled hollow flat tube configuration, be equivalent to the concurrent flow complex phase-change heat exchanger.Concrete structure can design with reference to ZL201020573126.5.
Described complex phase-change heat exchanger 24 can be according to flue structure and field condition, adopts vertically, level or tilting be arranged in the flue.
The structure of II level complex phase-change heat exchanger of the present invention is similar with I level complex phase-change heat exchanger, the casing 29-5 in mainly comprising between heat exchanger tube 29-1, sleeve pipe 29-2, the first tube sheet 29-3, the second tube sheet 29-4 and the tube sheet.Shell side casing between the first outer tube sheet 29-3 of sleeve pipe is set in case of necessity.
It should be noted that: for the desulfurizing tower input gas temperature that guarantees wet desulphurization reaches requirement; Promptly about 90 ℃; Cold end corrosion may take place in the metal wall that contacts with the high flue gas of temperature in the II level complex phase-change heat exchanger 29, and the metal wall that therefore contacts with flue gas should adopt reliable anti-corrosion measure or select the corrosion-resistant tubing for use.
The sleeve pipe of described II level composite phase-change heat exchange 29 and the working media between the interior heat exchanger tube are water or other suitable working fluid.Phase-change working substance is squeezed into the sleeve pipe of complex phase-change heat exchanger 29 and the cavity between the interior heat exchanger tube through II level frequency modulation pump 39; Carry out indirect heat exchange with high-temperature flue gas and produce steam; This high temperature side is equivalent to evaporimeter, and the cryogenic fluid such as the cold air 41 of carbonated drink mixture and opposite side carry out heat exchange simultaneously, plays cooling effect; Low temperature side is equivalent to condenser; The phase-change working substance that comes out is sent into II level thermoregulating system through pipeline and is transferred 40, squeezes into II level complex phase-change heat exchanger 29 through II level frequency modulation pump 39 again, thereby forms the phase-change working substance closed circuit.
Described II level thermoregulating system transfers 40 to comprise expansion tank 40-1, II level heater 40-2 and supporting instrument valve.Cross when low when the phase-change working substance temperature, start II level heater 40-2 heating phase-change working substance, meet the requirements of temperature value.
Sleeve pipe and the working media between the interior heat exchanger tube in described II level complex phase-change heat exchanger 29 and the I level complex phase-change heat exchanger 24 are water.As preferably, also can select the phase-change working substance of about 80 ℃ of boiling points, such as ethanol etc.Can be provided with the pressure regulation part similar with I level thermoregulating system 35 this moment.
The structure of III level complex phase-change heat exchanger 31 of the present invention is similar with II level complex phase-change heat exchanger, the shell side casing between the casing 31-5 in mainly comprising between heat exchanger tube 31-1, sleeve pipe 31-2, the first tube sheet 31-3, the second tube sheet 31-4, first, second tube sheet, first tube sheet outside the sleeve pipe between the 31-6.The metal wall that contacts with clean flue gas in the III level complex phase-change heat exchanger should adopt reliable anti-corrosion measure or select the corrosion-resistant tubing for use.
The sleeve pipe of described III level complex phase-change heat exchanger 31 and the working media between the interior heat exchanger tube are water or other suitable working fluid.Phase-change working substance is squeezed into the sleeve pipe of complex phase-change heat exchanger 31 and the cavity between the interior heat exchanger tube through the pipeline 48 that I level frequency modulation pump 33 outlet conduits distribute; Carry out indirect heat exchange generation steam with the conduction oil of high temperature; This high temperature side is equivalent to evaporimeter, and the clean flue gas of carbonated drink mixture and opposite side carries out heat exchange simultaneously, plays cooling effect; Low temperature side is equivalent to condenser; The phase-change working substance that comes out is sent into I level thermoregulating system through pipeline 49 and is transferred 35, squeezes into III level complex phase-change heat exchanger 31 through I level frequency modulation pump 33 outlet conduits 48 again, thereby forms the phase-change working substance closed circuit.
The conduction oil of the high temperature side of described III level complex phase-change heat exchanger; Squeeze into through pipeline by Heat-transfer Oil Pump 44; The conduction oil that comes out is through gs-oil separator 45; After hotline heater 43 heating that are arranged in the flue, squeeze into III level complex phase-change heat exchanger through Heat-transfer Oil Pump 44 again, form the closed circuit of conduction oil medium.
The supporting independently thermoregulating system of described III level complex phase-change heat exchanger, also available I level thermoregulating system 35 is controlled.
Described gs-oil separator 45 isolated gases are sent into high-order expansion slot 46 and are discharged.
Described high-order expansion slot 46 is used for absorbing the Volume Changes that conduction oil causes because of variations in temperature and discharges the isolated gas of gs-oil separator etc.
Described low level oil storage tank 47 is used for storing conduction oil, accepts the oil extraction of the conduction oil circulatory system and is the additional wet goods of system.
Described III level complex phase-change heat exchanger also can adopt higher steam of temperature such as extracted steam from turbine etc. as the heating thermal source.
Be provided with flue gas discharge temperature self-con-tained unit 36; During a plurality of self-con-tained unit, can divide into 36-1,36-2,36-3 etc., the self-con-tained unit all similar of I, II, III level complex phase-change heat exchanger; Self-con-tained unit 36 is according to the height of the tube wall temperature (as measuring through wall temperature tester 25) (or flue outlet place cigarette temperature) of fume side; Through controlling the means such as aperture of corresponding control valve, especially, can be through the convenient temperature of regulating phase-change working substance of thermoregulating system; When acid dew-point temperature changes, can regulate exhaust gas temperature rapidly, can make exhaust gas temperature satisfy the service requirement of complex phase-change heat exchanger.
Described I level, II level, III level complex phase-change heat exchanger can be provided with the gas bypass passage as required.
Described I level, II level, III level complex phase-change heat exchanger design, make with reference to the shell-and-tube heat exchanger standard.
Bypass flue 50 is set, draws, send into chimney by the flue between air-introduced machine 27 and the booster fan 28.
When the phase-change working substance cyclic part described in the present invention utilizes high potential difference can realize that condensate liquid refluxes smoothly, also the frequency modulation pump can be set.
II level complex phase-change heat exchanger of the present invention fully reclaims the low temperature exhaust heat of former flue gas, when effectively improving the whole generating generatine set heat efficiency, has practiced thrift a large amount of desulfurization waters.
Complex phase-change heat exchanger considered of the present invention adopts the ripe measure that prevents dust wearing and tearing in the flue gas.
The present invention also can be provided with mixing chamber at the clean smoke outlet of desulfurizing tower; Introduce an amount of high-temperature hot air from the outlet of boiler air preheater; Evenly mix with clean flue gas; In the control mist saturation degree 80%, send into III level complex phase-change heat exchanger again and heat up, thereby effectively alleviate the cold end corrosion situation.The patent of invention that its embodiment can combine the applicant to apply for is that residual heat from boiler fume reclaims and clean flue gas heat riser is realized.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention has realized the compound of evaporimeter and condenser by the phase-change working substance between interior heat exchanger tube and sleeve pipe in an equipment, thereby has realized incorporate complex phase-change heat exchanger truly;
2, utilize complex phase-change heat exchanger to realize the high efficiente callback of fume afterheat; Avoided the cold end corrosion of flue gas, facility compact, arrangement convenience; Can conveniently be arranged in vertically, inclination flue or horizontal flue, the operability of steam generator system being implemented reducing energy consumption strengthens greatly;
3, the thermoregulating system regulating measure of the I level of setting, II level complex phase-change heat exchanger is flexible simultaneously, can guarantee the safe operation of complex phase-change heat exchanger; Adopt the complex phase-change heat exchanger can the heats cold air, cancel original warm-air drier, guarantee the safe operation of original boiler air preheater; Adjusting requirement when the supporting thermoregulating system of III level phase-change heat-exchanger can conveniently satisfy clean flue gas acid dew point and improves,
4, the I level complex phase-change heat exchanger among the present invention is mainly used in recovery waste heat; II level complex phase-change heat exchanger is mainly used in the preliminary purification of degree of depth recovery waste heat and flue gas and handles, and satisfies the requirement of desulfurizing tower input gas temperature; Clean flue gas heated up after III level phase-change heat-exchanger was used for desulfurization, to reach the emission request that is not less than 80 ℃ of temperature.
5, III level complex phase-change heat exchanger simultaneously of the present invention adopts conduction oil as heating agent, utilizes the characteristics of the low-voltage high-temperature that conduction oil has, and can effectively cut down the consumption of energy: with hydrophily formula GGH is that high temperature water heater is compared, and required conveying power consumption reduces greatly; Compare with flue gas heating, equipment is little, and the coefficient of heat transfer is big, and heat-transfer effect is good, and the power consumption of identical heat consumes much lower than blower fan.
6, II level of the present invention, III level complex phase-change heat exchanger are equivalent to substitute original GGH, compare with GGH, are equivalent to split type layout, and therefore on-the-spot flexibility, adaptability of arranging strengthens greatly, and have overcome shortcoming such as leaking out of original GGH.
Generally speaking; Utilize the complex phase-change heat exchanger of high-efficiency compact fully to reclaim the low temperature exhaust heat of former flue gas, when effectively improving whole boiler generatine set heat efficiency, practiced thrift a large amount of desulfurization waters; Effectively alleviate the cold end corrosion of flue gas, reached purpose energy-conservation, that lower consumption, reduce discharging.
Description of drawings
Fig. 1 is the FGD schematic flow sheet.
Fig. 2 is the structural representation of patent 200610037683.3.
Fig. 3～Fig. 6 is the technological process and the phase-change heat-exchanger structural representation of patent 201010527948.4.
Fig. 7 is the composite phase-change heat-exchange system schematic flow sheet that residual heat from boiler fume reclaims that is used for of the present invention.
Among Fig. 7: 21-boiler, 22-economizer, 23-air preheater, 24-I level complex phase-change heat exchanger, 25-temperature instrumentation, 26-deduster; The 27-air-introduced machine, 28-booster fan, 29-II level complex phase-change heat exchanger, 30-desulfurizing tower, 31-III level complex phase-change heat exchanger; The 32-chimney, 33-I level pump, 34-heat exchanger, 35-I level thermoregulating system, 35-1-nitrogen cylinder; The 35-2-pressure regulator, 35-3-I level heater, 35-4-expansion tank, 36-self-con-tained unit, 37-cold fluid; The 38-hot fluid, 39-II level pump, 40-II level thermoregulating system, 40-1-expansion tank, 40-2-II level heater; 41-cold air, 42-hot-air, 43-hotline heater, 44-Heat-transfer Oil Pump, 45-gs-oil separator; 46-high temperature expansion slot, 47-low level oil storage tank, 48-III level complex phase-change heat exchanger phase-change working substance inlet line, 49-III level complex phase-change heat exchanger phase-change working substance outlet line, 50-bypass flue.
Fig. 8 is an I level phase-change heat-exchanger structural representation, among the figure: heat exchanger tube in the 24-I level complex phase-change heat exchanger, 24-1-, 24-2-sleeve pipe, 24-3-first tube sheet, 24-4-second tube sheet, the casing between the 24-5-tube sheet.
Fig. 9 is an II level phase-change heat-exchanger structural representation, among the figure: heat exchanger tube in the 29-II level complex phase-change heat exchanger, 29-1-, 29-2-sleeve pipe, 29-3-first tube sheet, 29-4-second tube sheet, the casing between the 29-5-tube sheet.
Figure 10 is an III level phase-change heat-exchanger structural representation, among the figure: heat exchanger tube in the 31-III level complex phase-change heat exchanger, 31-1-; The 31-2-sleeve pipe, 31-3-first tube sheet, 31-4-second tube sheet; Casing between the 31-5-tube sheet, 31-6-III level complex phase-change heat exchanger shell side casing.
The specific embodiment
Below in conjunction with accompanying drawing the invention is described in further detail.
Embodiment 1:
Be used for the composite phase-change heat-exchange system (seeing accompanying drawing 7 to accompanying drawing 10 and accompanying drawing identifier declaration) that residual heat from boiler fume reclaims; Utilize air, heat conduction wet goods as the working medium of recycling waste heat, comprise the inside and outside equipment of boiler flue and flue and connect pipeline, control instrument valve.Be provided with a hotline heater 43 in the flue; I level complex phase-change heat exchanger 24, II level complex phase-change heat exchanger 29, an III level complex phase-change heat exchanger 31, and original economizer of boiler 22, air preheater 23, deduster 26, desulfurizing tower 30 etc.Flue is provided with I level thermoregulating system 35, II level thermoregulating system 40, I level frequency modulation pump 33, heat exchanger 34, II level frequency modulation pump 39 outward, and the self-con-tained unit 36 that matches, Heat-transfer Oil Pump 44, gs-oil separator 45, high-order expansion slot 46, low level oil storage tank 47 and supporting pipeline, control instrument, valve etc.
Described I level complex phase-change heat exchanger 24 mainly comprises the casing 24-5 between interior heat exchanger tube 24-1, sleeve pipe 24-2, the first tube sheet 24-3, the second tube sheet 24-4 and the tube sheet.
The sleeve pipe and the working media between the interior heat exchanger tube of described I level composite phase-change heat exchange 24 are water or other suitable working fluid, are that example is explained with water among the present invention.Saturation water is squeezed into the sleeve pipe of complex phase-change heat exchanger 24 and the cavity between the interior heat exchanger tube through I level frequency modulation pump 33, carries out heat exchange with the high-temperature flue gas of interior heat exchanger tube 24-1 and produces steam, and this high temperature side is equivalent to evaporimeter; The outer cold air 41 of carbonated drink mixture and sleeve pipe carries out heat exchange; Play cooling effect, low temperature side is equivalent to condenser, carries out steam or the carbonated drink mixture that heat exchange produces with high-temperature flue gas; After getting into heat exchanger 34 coolings after coming out; Saturated condensed water gets into I level thermoregulating system and transfers 35, squeezes into complex phase-change heat exchanger 24 through I level frequency modulation pump 33 again, thereby forms the phase-change working substance closed circuit.Send into the original air preheater of boiler through the cold air 41 of heating and continue heating.
The steam that described complex phase-change heat exchanger 24 comes out is through heat exchanger 34 heats cold fluids 37, and the condensed water of generation is got back to I level thermoregulating system and transferred 35, through the follow-up workshop section of the hot fluid 38 confessions use of heat exchanger 34 heating.
Said I level thermoregulating system 35 comprises expansion tank 35-4, I level heater 35-3 and pressure regulation part; The pressure-regulating portion branch comprises pressure regulator 35-2 and nitrogen cylinder 35-1.When flue gas acid dew point changes; For example increase, regulate the pressure regulation part, the air pressure among the expansion tank 35-4 is suitably increased; Start I level heater 35-3; Because pressure increases, original saturation water becomes saturation state from undersaturated condition through heating after, and the adjusting temperature value is higher than 5 ℃ of acid dew points～be advisable more than 10 ℃ with saturated water temperature.
What pass through between the interior heat exchanger tube of described I level complex phase-change heat exchanger 24 and sleeve pipe is phase-change working substance; High-temperature flue gas is walked interior heat exchanger tube tube side or is walked the outer shell side of sleeve pipe; Cold fluid to be heated is corresponding walks an other side, thereby realizes effective combination of an equipment, three kinds of heat transferring mediums.
The I level thermoregulating system 35 that the present invention adopts can be regulated the phase-change working substance temperature according to flue gas acid dew point, and then control phase-change heat-exchanger wall surface temperature, and assurance I level complex phase-change heat exchanger 24 is effectively avoided the cold end corrosion of flue gas, regulates flexible.
Described cold fluid, medium can be condensed water, conduction oil or other suitable processing mediums of air, plant condenser generation.
One of nucleus equipment of the present invention is an I level complex phase-change heat exchanger 24; By heat exchanger tube 24-1, at least one the sleeve pipe 24-2 that matches, the first tube sheet 24-3, the second tube sheet 24-4 at least one, and the compositions such as casing 24-5 between first tube sheet and second tube sheet.Described casing 24-5 can be the structure of cylinder type, rectangle or other curved face types.Shell side casing between the first outer tube sheet 24-3 of sleeve pipe is set in case of necessity.
Between heat exchanger tube 24-1 and the sleeve pipe 24-2 corresponding supporting construction can be set in described, as preferably, supporting construction and can adopt hot good conductor material both connection.
Heat exchanger tube 24-1 adopts pipe or hollow flat tube or other curved surface cavity body structures in described, and correspondingly, sleeve pipe 24-2 also adopts the structure that matches.Such as interior heat exchanger tube, when sleeve pipe adopts the thin walled hollow flat tube configuration, be equivalent to the concurrent flow complex phase-change heat exchanger.Concrete structure can design with reference to ZL201020573126.5.
Described I level complex phase-change heat exchanger 24 can adopt vertically according to flue structure and field condition, level or tilting are arranged in the flue.
The structure of II level complex phase-change heat exchanger of the present invention is similar with I level complex phase-change heat exchanger, the casing 29-5 in mainly comprising between heat exchanger tube 29-1, sleeve pipe 29-2, the first tube sheet 29-3, the second tube sheet 29-4 and the tube sheet.The metal wall that contacts with flue gas should adopt reliable anti-corrosion measure or select the corrosion-resistant tubing for use.
The sleeve pipe of described II level composite phase-change heat exchange 29 and the working media between the interior heat exchanger tube are water or other suitable working fluid.Phase-change working substance is squeezed into the sleeve pipe of complex phase-change heat exchanger 29 and the cavity between the interior heat exchanger tube through II level frequency modulation pump 39; Carry out indirect heat exchange with high-temperature flue gas and produce steam; This high temperature side is equivalent to evaporimeter, and the cold air 41 of carbonated drink mixture and opposite side carries out heat exchange simultaneously, plays cooling effect; Low temperature side is equivalent to condenser; The phase-change working substance that comes out is sent into II level thermoregulating system through pipeline and is transferred 40, squeezes into II level complex phase-change heat exchanger 29 through II level frequency modulation pump 39 again, thereby forms the phase-change working substance closed circuit.
Described II level thermoregulating system transfers 40 to comprise expansion tank 40-1, II level heater 40-2 and supporting instrument valve.Cross when low when the phase-change working substance temperature, start II level heater 40-2 heating phase-change working substance, meet the requirements of temperature value.
Sleeve pipe and the working media between the interior heat exchanger tube in described II level complex phase-change heat exchanger 29 and the I level complex phase-change heat exchanger 24 are water.Also can select the phase-change working substance of about 80 ℃ of boiling points, such as ethanol etc.Can be provided with the pressure regulation part similar with I level thermoregulating system 35 this moment.
The structure of III level complex phase-change heat exchanger 31 of the present invention is similar with II level complex phase-change heat exchanger, the casing 31-5 in mainly comprising between heat exchanger tube 31-1, sleeve pipe 31-2, the first tube sheet 31-3, the second tube sheet 31-4, first, second tube sheet, the shell side casing 31-6 between first tube sheet outside the sleeve pipe.The metal wall that contacts with clean flue gas in the III level complex phase-change heat exchanger should adopt reliable anti-corrosion measure or select the corrosion-resistant tubing for use.
The sleeve pipe and the working media between the interior heat exchanger tube of described III level complex phase-change heat exchanger 31 are water.Phase-change working substance is squeezed into the sleeve pipe of complex phase-change heat exchanger 31 and the cavity between the interior heat exchanger tube through the pipeline 48 that I level frequency modulation pump 33 outlet conduits distribute; Carry out indirect heat exchange generation steam with the conduction oil of high temperature; This high temperature side is equivalent to evaporimeter, and the clean flue gas of carbonated drink mixture and opposite side carries out heat exchange simultaneously, plays cooling effect; Low temperature side is equivalent to condenser; The phase-change working substance that comes out is sent into I level thermoregulating system through pipeline 49 and is transferred 35, squeezes into III level complex phase-change heat exchanger 31 through I level frequency modulation pump 33 outlet conduits 48 again, thereby forms the phase-change working substance closed circuit.
The conduction oil of the high temperature side of described III level complex phase-change heat exchanger; Squeeze into through pipeline by Heat-transfer Oil Pump 44; The conduction oil that comes out is through gs-oil separator 45; After hotline heater 43 heating that are arranged in the flue, squeeze into III level complex phase-change heat exchanger through Heat-transfer Oil Pump 44 again, form the closed circuit of conduction oil medium.
Described gs-oil separator 45 isolated gases are sent into high-order expansion slot 46 and are discharged.
Described high-order expansion slot 46 is used for absorbing the Volume Changes that conduction oil causes because of variations in temperature.
Described low level oil storage tank 47 is used for storing conduction oil, accepts the oil extraction of the conduction oil circulatory system and is the additional wet goods of system.
I level complex phase-change heat exchanger is provided with flue gas discharge temperature self-con-tained unit 36; II, III level complex phase-change heat exchanger all are provided with self-con-tained unit; Its structural principle is similar with the I level, and self-con-tained unit 36 is according to the height of the tube wall temperature (as measuring through wall temperature tester 25) (or flue outlet place cigarette temperature) of fume side, through controlling the means such as aperture of corresponding control valve; Especially; Can when acid dew-point temperature changes, can regulate exhaust gas temperature rapidly through the convenient temperature of regulating phase-change working substance of thermoregulating system, can make exhaust gas temperature satisfy the service requirement of complex phase-change heat exchanger.
Bypass flue 50 is set, draws, send into chimney by the flue between air-introduced machine 27 and the booster fan 28.When II level, III level complex phase-change heat exchanger or desulfurizing tower break down, by gas bypass passage 50 flue gas is directly entered atmosphere through the cigarette fontanel, thereby guarantee the safe operation of unit and the timely processing of fault.
The present invention does not relate to part as adiabatic clamping plate, clamping plate and maybe can adopt prior art to realize with the structure of bolt, heat exchanger tube, mounting means, control system etc. are all identical with existing phase-change heat-exchanger.
Embodiment 2:
I among the present invention, II, III level complex phase-change heat exchanger can be separately or be provided with a plurality ofly respectively, and a plurality of composite phase-change parallel operation in every grade can series, parallel or series-parallel connection.A plurality of complex phase-change heat exchangers in the I level are provided with thermoregulating system separately; A plurality of complex phase-change heat exchangers in the II level can be provided with a thermoregulating system; A plurality of complex phase-change heat exchangers in the III level can shared I level thermoregulating systems or thermoregulating system are set separately.The heating agent loop of a plurality of complex phase-change heat exchangers in the III level can be provided with a high temperature heat conductive oil series loop, or high temperature heat conductive oil connection in series-parallel loop etc. is set.All the other implementation methods are with embodiment 1.
Unlisted complex phase-change heat exchanger flow process in the embodiment of the invention, the patent of invention of applying for simultaneously with reference to the applicant promptly " is used for the composite phase-change heat-exchanger rig that residual heat from boiler fume reclaims " and carries out conventional Combination Design, selects for use.
Though the present invention with preferred embodiment openly as above, they are not to be used for limiting the present invention, anyly are familiar with this art, in spirit that does not break away from the present invention and scope, when doing various variations or retouching, belong to the present invention's protection domain equally certainly.For example, the structure of complex phase-change heat exchanger of the present invention and recovery waste heat mode thereof can be applied to industrial furnace etc. equally.Therefore protection scope of the present invention should with the application claim was defined is as the criterion.
Claims (8)
1. be used for the composite phase-change heat-exchange system that residual heat from boiler fume reclaims; Comprise the original economizer of boiler (22), air preheater (23), deduster (26), desulfurizing tower (30), and respectively connect pipeline and control instrument, valve; It is characterized in that: also be provided with hotline heater (43) in the flue, at least one I level complex phase-change heat exchanger (24), at least one II level complex phase-change heat exchanger (29), at least one III level complex phase-change heat exchanger (31);
And the supporting thermoregulating system of the outer I level complex phase-change heat exchanger (24) that is provided with of flue: comprise heat exchanger (34), I level thermoregulating system (35), I level pump (33), the self-con-tained unit (36) that matches;
The supporting thermoregulating system of the outer II level complex phase-change heat exchanger (29) that is provided with of flue: comprise II level thermoregulating system (40), II level pump (39) and the self-con-tained unit that matches;
With the supporting independently thermoregulating system of III level complex phase-change heat exchanger (31), or the self-con-tained unit that adopts I level thermoregulating system (35) to control to adjust and match;
Said I level, II level, III level complex phase-change heat exchanger are respectively equipped with the casing between interior heat exchanger tube, sleeve pipe, first tube sheet, second tube sheet and the tube sheet; I level, II level and III level complex phase-change heat exchanger form three journey integral structures of the outer shell side of cover tube side and sleeve pipe between interior heat exchanger tube tube side, interior heat exchanger tube and sleeve pipe respectively, and three grades of complex phase-change heat exchangers are set in turn in the exhaust gases passes between boiler and the cigarette fontanel.
2. the composite phase-change heat-exchange system that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
The phase-change working substance loop of I level complex phase-change heat exchanger (24) wherein: cover tube side, heat exchanger (34) and I level thermoregulating system (35) by I level pump (33), I level complex phase-change heat exchanger (24) are in turn connected to form the loop by the road;
The phase-change working substance loop of II level complex phase-change heat exchanger (29) wherein: cover tube side and II level thermoregulating system (40) by II level pump (39), II level complex phase-change heat exchanger (29) are in turn connected to form the loop by the road;
The loop of exchanging work mutually of III level complex phase-change heat exchanger (31) wherein: cover tube side and I level thermoregulating system by I level pump (33), III level complex phase-change heat exchanger (31) are transferred (35), are in turn connected to form the loop by the road.
3. the composite phase-change heat-exchange system that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
The conduction oil circulatory system of III level complex phase-change heat exchanger (31): comprise cover tube side, gs-oil separator (45) and the hotline heater (43) of Heat-transfer Oil Pump (44), III level complex phase-change heat exchanger (31), be connected to form the loop by pipeline; High-order expansion slot (46), low level oil storage tank (47) are the auxiliary equipment of the conduction oil circulatory system.
4. the composite phase-change heat-exchanger rig that is used for the boiler wet method desulphurization system according to claim 1 is characterized in that:
Said I level thermoregulating system (35) comprises expansion tank (35-4), I level heater (35-3) and pressure regulation part; The pressure-regulating portion branch comprises pressure regulator (35-2) and nitrogen cylinder (35-1); Described I level heater (35-3) is arranged in the expansion tank, or is arranged on the pipeline between heat exchanger (34) and expansion tank or expansion tank and the I level pump (33).
5. the composite phase-change heat-exchange system that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
What the cover tube side passed through between the interior heat exchanger tube of described I level, II level complex phase-change heat exchanger and sleeve pipe is phase-change working substance, and when working media was high-temperature flue gas in the interior heat exchanger tube tube side, the working media of the shell side that sleeve pipe is outer was a cold fluid to be heated; When working media in the interior heat exchanger tube tube side was cold fluid to be heated, the working media of the shell side that sleeve pipe is outer was a high-temperature flue gas.
6. the composite phase-change heat-exchange system that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
The interior heat exchanger tube of said I level, II level and III level complex phase-change heat exchanger adopts pipe or hollow flat tube or curved surface cavity body structure; Correspondingly, the structure of the coupling of heat exchanger tube in its sleeve pipe also adopts.
7. the composite phase-change heat-exchange system that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
Said I level complex phase-change heat exchanger adopts vertically, level or tilting are arranged in the flue.
8. the composite phase-change heat-exchange system that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
Be provided with gas bypass passage (50) between described I level, III level complex phase-change heat exchanger, gas bypass passage (50) links to each other with the cigarette fontanel.
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| CN2011103545618A CN102410549A (en) | 2011-11-10 | 2011-11-10 | Composite phase change heat exchange system for flue gas heat recovery of boiler |
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| CN2011103545618A CN102410549A (en) | 2011-11-10 | 2011-11-10 | Composite phase change heat exchange system for flue gas heat recovery of boiler |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645112A (en) * | 2012-04-19 | 2012-08-22 | 浙江清科电力科技有限公司 | Waste heat recovery system for improving efficiency of electric dust collector |
| CN104728826A (en) * | 2015-03-19 | 2015-06-24 | 中国华能集团清洁能源技术研究院有限公司 | Constant temperature economizer |
| CN104964265A (en) * | 2015-06-15 | 2015-10-07 | 杭州华电能源工程有限公司 | Energy-saving emission reduction system and energy-saving emission reduction method of horizontal type phase change heat exchanger and front-arrangement type water medium type GGH combined |
| CN105258518A (en) * | 2015-11-11 | 2016-01-20 | 中国中轻国际工程有限公司 | Heat recovery process and system of flue gas |
| CN108386863A (en) * | 2018-04-09 | 2018-08-10 | 无锡华光新动力环保科技股份有限公司 | Power plant takes off bletilla residual neat recovering system |
| CN109806751A (en) * | 2019-03-25 | 2019-05-28 | 周岩 | A kind of low energy consumption fire coal boiler fume takes off white system |
| CN110056859A (en) * | 2019-04-02 | 2019-07-26 | 南通常安能源有限公司 | A kind of flue gas waste heat recovery heat-exchange system and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875436A (en) * | 1988-02-09 | 1989-10-24 | W. R. Grace & Co.-Conn. | Waste heat recovery system |
| CN2090473U (en) * | 1991-01-22 | 1991-12-11 | 江苏工学院 | Composite phase-change heat exchanger |
| CN2368001Y (en) * | 1999-04-23 | 2000-03-08 | 杨本洛 | Integrated heat-pipe type compound phase transition heat exchanger |
| CN102012036A (en) * | 2010-11-02 | 2011-04-13 | 杨本洛 | Composite phase-transition heat exchanging device for warming clean gas fume and recovering exhaust heat after wet desulphurization |
| CN201852277U (en) * | 2010-11-19 | 2011-06-01 | 王海波 | High-efficiency boiler waste heat recovering device provided with phase change heat exchanger |
| CN102226548A (en) * | 2011-05-31 | 2011-10-26 | 杨强 | Water heating-electric heating phase change copper-aluminum compound column-wing-type radiator |
| CN202511307U (en) * | 2011-11-10 | 2012-10-31 | 王海波 | Compound phase change heat exchange system for recycling boiler flue gas waste heat |
-
2011
- 2011-11-10 CN CN2011103545618A patent/CN102410549A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875436A (en) * | 1988-02-09 | 1989-10-24 | W. R. Grace & Co.-Conn. | Waste heat recovery system |
| CN2090473U (en) * | 1991-01-22 | 1991-12-11 | 江苏工学院 | Composite phase-change heat exchanger |
| CN2368001Y (en) * | 1999-04-23 | 2000-03-08 | 杨本洛 | Integrated heat-pipe type compound phase transition heat exchanger |
| CN102012036A (en) * | 2010-11-02 | 2011-04-13 | 杨本洛 | Composite phase-transition heat exchanging device for warming clean gas fume and recovering exhaust heat after wet desulphurization |
| CN201852277U (en) * | 2010-11-19 | 2011-06-01 | 王海波 | High-efficiency boiler waste heat recovering device provided with phase change heat exchanger |
| CN102226548A (en) * | 2011-05-31 | 2011-10-26 | 杨强 | Water heating-electric heating phase change copper-aluminum compound column-wing-type radiator |
| CN202511307U (en) * | 2011-11-10 | 2012-10-31 | 王海波 | Compound phase change heat exchange system for recycling boiler flue gas waste heat |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645112A (en) * | 2012-04-19 | 2012-08-22 | 浙江清科电力科技有限公司 | Waste heat recovery system for improving efficiency of electric dust collector |
| CN102645112B (en) * | 2012-04-19 | 2014-08-27 | 浙江清科电力科技有限公司 | Waste heat recovery system for improving efficiency of electric dust collector |
| CN104728826A (en) * | 2015-03-19 | 2015-06-24 | 中国华能集团清洁能源技术研究院有限公司 | Constant temperature economizer |
| CN104964265A (en) * | 2015-06-15 | 2015-10-07 | 杭州华电能源工程有限公司 | Energy-saving emission reduction system and energy-saving emission reduction method of horizontal type phase change heat exchanger and front-arrangement type water medium type GGH combined |
| CN105258518A (en) * | 2015-11-11 | 2016-01-20 | 中国中轻国际工程有限公司 | Heat recovery process and system of flue gas |
| CN108386863A (en) * | 2018-04-09 | 2018-08-10 | 无锡华光新动力环保科技股份有限公司 | Power plant takes off bletilla residual neat recovering system |
| CN109806751A (en) * | 2019-03-25 | 2019-05-28 | 周岩 | A kind of low energy consumption fire coal boiler fume takes off white system |
| CN109806751B (en) * | 2019-03-25 | 2021-08-24 | 周岩 | Low-energy-consumption coal-fired boiler flue gas whitening system |
| CN110056859A (en) * | 2019-04-02 | 2019-07-26 | 南通常安能源有限公司 | A kind of flue gas waste heat recovery heat-exchange system and method |
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