CN102410527A - Composite phase change heat exchanger for flue gas heat recovery of boiler - Google Patents
Composite phase change heat exchanger for flue gas heat recovery of boiler Download PDFInfo
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Abstract
The invention discloses a composite phase change heat exchanger for flue gas heat recovery of boiler, comprising an original coal saving device and an air pre-heater of the boiler, a fluid heater disposed in the flue, a composite phase change heat exchanger, and a temperature adjustor disposed outside the flue, a heat exchanger, a frequency modulation water pump, a pipeline and an instrument valve which are matched; the composite phase change heat exchanger is a three-process integrated structure composed of an inner heat exchange pipe process, a sleeve pipe process between the inner heat exchange pipe process and the sleeve pipe and a shell process outside the sleeve pipe. The composite phase change heat exchanger of the invention has a compact structure, which can be conveniently disposed in a vertical, horizontal or oblique flue; simultaneously, the adjustment is flexible, which can effectively avoid low-temperature corrosion, so that the boiler can be operated economically, safely and efficiently. Compared to the technology of the composite phase change heat exchanger developed by Mr. Yang Benluo, the composite phase change heat exchanger of the invention equals to the second-generation technology of the composite phase change heat exchanger.
Description
Technical field
The present invention relates to a kind of complex phase-change heat exchanger that residual heat from boiler fume reclaims that is used for, belong to residual heat from boiler fume and reclaim the field.
Background technology
Be typically provided with economizer and/or air preheater in the boiler back end ductwork, the absorption portion fume afterheat, but exhaust gas temperature is usually at 140 ℃～160 ℃ or higher.Because the existence of sulfide in the flue gas; The exhanst gas outlet temperature of air preheater back-end surfaces is restricted; Exhaust gas temperature is crossed the low wall surface temperature that can cause heating surface and is lower than flue gas acid dew point and serious dewing corrosion, stifled ash even perforation take place, and this is to continue to utilize fume afterheat, reduce the difficult problem that exhaust gas temperature must overcome.
Patent 91213113.6,92102776.1,99226380.8,99240424.X, 01238824.6,200710046604.X, 201010527948.4,201010528313.6,201110077458.3 etc. provide multiple complex phase-change heat exchanger technology; The core of this series technique is the evaporimeter of phase-change heat-exchanger, adopts the heat exchanger tube of fin pipe heat exchanger as evaporimeter.Phase-change heat-exchanger can utilize waste heat, reduce exhaust gas temperature significantly in the prerequisite recover of keeping low wall surface temperature, and exhaust gas temperature is controlled at only high about 15 ℃ than lowermost wall surface temperature.But in practical application, also must handle thermally equilibrated restriction well, just might reach the effect of not only avoiding dewfall but also reducing exhaust gas temperature.
This series technique also has certain shortcoming, promptly is applied to very difficulty of vertical flue, only should arrange at horizontal flue, and the device of, no arrangement space too short for distance between vertical flue, inclination flue and air-introduced machine or the chimney is then should technology enforcement very difficult.Because when the saturation water heat absorption was vaporized in the fin pipe, saturated vapor was discharged easily when vertically arranging.Flue gas such as vertical direction flow, and the fin obstruction because of pipeline with producing very big resistance, is unfavorable for the operation of boiler, and the power consumption of air-introduced machine increases.And the evaporimeter of phase-change heat-exchanger and condenser employing split-type structural, the condensate liquid that must keep the certain height difference could guarantee that condenser comes out between the two is back to the entrance point of evaporimeter smoothly.
Therefore; How to overcome the shortcoming of above-mentioned technology; Solve vertical flue or inclination flue and arrange the difficult problem of evaporimeter; And the difficult problem of evaporimeter, the split type layout of condenser, realize evaporation, the integrated compact Layout of condensing plant, become and rationally utilize residual heat from boiler fume, avoid the flue gas low-temperature burn into to reduce exhaust gas temperature, reach the research focus of energy-saving and cost-reducing purpose.
Summary of the invention
The object of the invention is exactly to solve the problem that above-mentioned prior art exists, and solves the problem of vertical flue or inclination flue tubular type phase-change heat-exchanger difficult arrangement, realizes the high efficiente callback of fume afterheat.The present invention adopts thermosistor to regulate the phase-change working substance temperature according to flue gas acid dew point, and then control phase-change heat-exchanger wall surface temperature, utilizes complex phase-change heat exchanger effectively to avoid the cold end corrosion of flue gas, realizes the high efficiente callback of fume afterheat.
The objective of the invention is to realize through following measure:
Be used for the complex phase-change heat exchanger that residual heat from boiler fume reclaims; It comprises the original economizer of boiler 2, air preheater 3; It is characterized in that: it also comprises at least one fluid heater 10, at least one complex phase-change heat exchanger 4 that is arranged in the boiler flue 1, and is arranged on flue outer thermosistor 7, heat exchanger 9, frequency modulation water pump 8 and supporting pipeline, instrument valve;
Described complex phase-change heat exchanger 4 comprises: heat exchanger tube 4-1 at least one, at least one be set in casing 4-5 between outer sleeve pipe 4-2, the first tube sheet 4-3, the second tube sheet 4-4 and the tube sheet of heat exchanger tube 4-1;
This complex phase-change heat exchanger forms by the cover tube side between interior heat exchanger tube tube side, interior heat exchanger tube and the sleeve pipe, the outer shell side three journey integral structures of sleeve pipe.
As required, complex phase-change heat exchanger 4 also is provided with the casing 4-6 between the tube sheet, so that shell side adopts liquid medium.
The phase-change working substance loop of complex phase-change heat exchanger 24 wherein: cover tube side, heat exchanger 9 and thermosistor 7 by frequency modulation water pump 8, complex phase-change heat exchanger 4 are connected to form the loop by the road.
When a plurality of complex phase-change heat exchanger 4 is set; Answer the thermosistor of supporting independent operating separately; To the different wall surface temperature of each independent phase-change heat-exchange unit controls, that is the corresponding different saturation temperature of phase-change working substance in the cover tube side between heat exchanger tube and the sleeve pipe in the control.
Described complex phase-change heat exchanger 4 mainly comprises the casing 4-5 between interior heat exchanger tube 4-1, sleeve pipe 4-2, the first tube sheet 4-3, the second tube sheet 4-4 and the tube sheet.
Working media between the sleeve pipe of described complex phase-change heat exchanger 4 and the interior heat exchanger tube is water or other suitable working fluid (for example ethanol etc.), is that example is explained with water among the present invention.Saturation water is squeezed into the sleeve pipe of complex phase-change heat exchanger 4 and the cavity between the interior heat exchanger tube through frequency modulation water pump 8; Carry out heat exchange generation steam with the high-temperature flue gas of interior heat exchanger tube 4-1; This high temperature side is equivalent to evaporimeter, and the outer working medium to be heated of carbonated drink mixture and sleeve pipe is carried out heat exchange, plays cooling effect; Low temperature side is equivalent to condenser; By the phase-change working substance between interior heat exchanger tube and sleeve pipe, in an equipment, realized the compound of evaporimeter and condenser, thereby realized incorporate complex phase-change heat exchanger truly.Since be boiling heat transfer, so the coefficient of heat transfer is high, compact conformation.Carry out steam or the carbonated drink mixture that heat exchange produces with high-temperature flue gas, after the back of coming out got into heat exchanger 9 coolings, saturated condensed water got into thermosistor 7, squeezes into complex phase-change heat exchanger 4 through frequency modulation water pump 8 again, thereby forms the phase-change working substance closed circuit.
Said thermosistor 7 comprises expansion tank 7-4, heater 7-3 and pressure regulation part; The pressure-regulating portion branch comprises pressure regulator 7-2 and nitrogen cylinder 7-1.When flue gas acid dew point changes; For example increase, regulate the pressure regulation part, the air pressure among the expansion tank 7-4 is suitably increased; Start heater 7-3; Because pressure increases, original saturation water becomes saturation state from undersaturated condition after heating, and the adjusting temperature value is higher than acid dew point with saturated water temperature and is advisable for 5 ℃～10 ℃.
Described heater 7-3 can be arranged in the expansion tank, also can be arranged on the pipeline between heat exchanger 9 and expansion tank or expansion tank and the frequency modulation water pump.
When described complex phase-change heat exchanger 4 as design confirmed that the metallic walls surface temperature that contacts with flue gas is lower than the flue gas acid dew point operation, the metal wall that it contacts with flue gas should adopt reliable anti-corrosion measure or anti-corrosion material.
Heat exchanger tube, 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 in described.
What pass through between heat exchanger tube and sleeve pipe in described is phase-change working substance, and heat exchanger tube tube side or walk the outer shell side of sleeve pipe in high-temperature flue gas is walked is realized the combination of an equipment, three kinds of heat transferring mediums, efficient heat transfer.
When working media was high-temperature flue gas in the heat exchanger tube in described, 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.
Described cold fluid, medium can be condensed water, conduction oil or other suitable processing mediums of air, plant condenser generation.
The steam that described complex phase-change heat exchanger 4 comes out is through heat exchanger 9 heats cold fluids, and the condensed water of generation is got back to thermosistor 7, after the cold fluid of heat exchanger 9 heating gets into fluid heater 10 continuation absorption fume afterheats, becomes hot fluid 12 and supplies follow-up workshop section to use.
Described fluid heater 10 can according to circumstances be provided with one or more.
One of nucleus equipment of the present invention is a complex phase-change heat exchanger 4, and by heat exchanger tube 4-1, at least one the sleeve pipe 4-2 that matches, the first tube sheet 4-3, the second tube sheet 4-4 at least one, and the casing 4-5 between first tube sheet and second tube sheet forms.Described casing 4-5,4-6 can be the structure of cylinder type, rectangle or other curved face types.
Between heat exchanger tube 4-1 and the sleeve pipe 4-2 corresponding supporting construction can be set in described, as preferably, supporting construction and can adopt hot good conductor material both connection.
Heat exchanger tube 4-1 adopts pipe or hollow flat tube or other curved surface cavity body structures in described, and correspondingly, sleeve pipe 4-2 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 4 can adopt vertically according to flue structure and field condition, level or incline structure are arranged.Therefore the operability to steam generator system enforcement reducing energy consumption strengthens greatly, and alternative feasible program of suiting measures to local conditions is many.
Heat exchanger tube 4-1 and sleeve pipe 4-2 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.
Be provided with flue gas discharge temperature self-con-tained unit 6; Self-con-tained unit 6 is according to the height of the tube wall temperature (as measuring through wall temperature tester 5) (or flue outlet place cigarette temperature) of fume side; The means such as aperture of bypass valve through control heat exchanger 9; Especially; Can when acid dew-point temperature changes, can regulate exhaust gas temperature rapidly through the convenient temperature of regulating saturation waters of thermosistor 7, exhaust gas temperature is reduced to only be higher than or above about 15 ℃ of the flue gas acid dew point temperature of complex phase-change heat exchanger 4 fume side walls.When the design wall surface temperature was lower than flue gas acid dew point, the metal that then contacts with flue gas should adopt suitable anti-corrosion measure or anti-corrosion material.
Said complex phase-change heat exchanger 4 designs, makes with reference to the shell-and-tube heat exchanger standard.
Complex phase-change heat exchanger 4 of the present invention and fluid heater 10 considered adopt the ripe measure that prevents dust wearing and tearing in the flue gas.
Compared with prior art, the present invention has following beneficial effect:
1, the complex phase-change heat exchanger 4 that utilizes of the present invention's design is realized the high efficiente callback of fume afterheat, facility compact, and arrangement convenience, the operability of steam generator system being implemented reducing energy consumption strengthens greatly, and alternative feasible program of suiting measures to local conditions is many.
When 2, this complex phase-change heat exchanger adopts air as the recuperation of heat medium, can cancel original warm-air drier, the cold end corrosion of eliminating original air preheater is dangerous.Regulating measure is flexible simultaneously, reaches the purpose of utilizing fume waste heat to greatest extent, makes boiler ability economy, high thermal efficiency operation, reaches purpose energy-conservation, that lower consumption, reduce discharging.
3, complex phase-change heat exchanger of the present invention forms by the cover tube side between interior heat exchanger tube tube side, interior heat exchanger tube and the sleeve pipe, the outer shell side three journey integral structures of sleeve pipe, and promptly evaporimeter and condenser adopt integral structure, design ingenious, the heat transfer efficiency height.
4, complex phase-change heat exchanger of the present invention is applicable to the waste heat recovery of various flues simultaneously, especially is suitable for vertically or horizontal flue.
5, walk flue gas in the interior heat exchanger tube of complex phase-change heat exchanger of the present invention, when being arranged in parallel with vertical flue, can effectively reduce the dust stratification on the heating surface, enhance heat transfer reduces heat loss, reduces the apparatus arrangement difficulty.
6, compare with the complex phase-change heat exchanger of this of poplar Mr. Lip river exploitation, the complex phase-change heat exchanger among the present invention is equivalent to the complex phase-change heat exchanger technology of the second generation.
Description of drawings
Fig. 1 to Fig. 5 is that the present invention is used for the composite phase-change heat-exchanger rig arrangement principle schematic that residual heat from boiler fume reclaims.
Among the figure, 1-boiler flue, 2-economizer, 3-air preheater, heat exchanger tube in the 4-phase-change heat-exchanger, 4-1,4-2 sleeve pipe; 4-3 first tube sheet, 4-4 second tube sheet, the casing between the 4-5 tube sheet, the casing between 4-6 first tube sheet, 5-temperature instrumentation, 6-self-con-tained unit; 7-thermosistor, 7-1 nitrogen cylinder, 7-2 pressure regulator, 7-3 heater, 7-4 expansion tank, 8-frequency modulation water pump; 9-heat exchanger, 10-fluid heater, 11-cold fluid, 12-hot fluid, 13-cold air, 14-hot-air.
The specific embodiment
Below in conjunction with accompanying drawing the invention is described in further detail.
Embodiment 1:
Be used for the complex phase-change heat exchanger (seeing accompanying drawing 1 and accompanying drawing identifier declaration) that residual heat from boiler fume reclaims; Utilize air 13 and cold fluid 11 working medium, comprise the inside and outside equipment of boiler flue 1 and flue and connect pipeline, control instrument valve like conduct recycling waste heats such as water at low temperature (or conduction oil).Be provided with fluid heater 10, complex phase-change heat exchanger 4 in the flue 1, the dedusting of the original economizer of boiler 2, air preheater 3 and original boiler, desulphurization plant etc.Flue is outside equipped with thermosistor 7, heat exchanger 9, frequency modulation water pump 8 and supporting pipeline thereof, instrument valve etc.
Described complex phase-change heat exchanger 4 mainly comprises the casing 4-5 between interior heat exchanger tube 4-1, sleeve pipe 4-2, the first tube sheet 4-3, the second tube sheet 4-4 and the tube sheet.Its air is walked the outer shell side of sleeve pipe, and high-temperature flue gas is walked interior heat exchanger tube, and phase-change working substance is that water is walked the cavity between interior heat exchanger tube and the sleeve pipe.Saturation water is squeezed into the sleeve pipe of complex phase-change heat exchanger 4 and the cavity between the interior heat exchanger tube through frequency modulation water pump 8; Carry out heat exchange generation steam with the high-temperature flue gas of interior heat exchanger tube 4-1; This high temperature side is equivalent to evaporimeter, and the outer cold air of carbonated drink mixture and sleeve pipe carries out heat exchange, plays cooling effect; Low temperature side is equivalent to condenser; By the phase-change working substance between interior heat exchanger tube and sleeve pipe, in an equipment, realized the compound of evaporimeter and condenser, thereby realized incorporate complex phase-change heat exchanger truly.Since be boiling heat transfer, so the coefficient of heat transfer is high, compact conformation.Carry out steam or the carbonated drink mixture that heat exchange produces with high-temperature flue gas, after the back of coming out got into heat exchanger 9 coolings, saturated condensed water got into thermosistor 7, squeezes into complex phase-change heat exchanger 4 through frequency modulation water pump 8 again, thereby forms the phase-change working substance closed circuit.Air after the heating of complex phase-change heat exchanger 4 shell sides is sent into the original air preheater 3 of boiler again and is continued boiler participation fuel is sent in the heating back as combustion-supporting gas 14 burning.
Said thermosistor 7 comprises expansion tank 7-4, heater 7-3 and pressure regulation part; The pressure-regulating portion branch comprises pressure regulator 7-2 and nitrogen cylinder 7-1.When flue gas acid dew point changes, for example increase, regulate pressure regulator 7-2; Air pressure among the expansion tank 7-4 is suitably increased; Start heater 7-3, because pressure increases, original saturation water becomes saturation state from undersaturated condition after heating; Thereby improved the temperature of saturation water, finally reached the purpose of regulating exhaust gas temperature, avoiding cold end corrosion.
Steam that complex phase-change heat exchanger 4 comes out or steam water interface are through heat exchanger 9 heats cold fluids 11; The condensed water that produces is got back to thermosistor 7; After the cold fluid of heat exchanger 9 heating gets into fluid heater 10 continuation absorption fume afterheats, become hot fluid 12 and supply follow-up workshop section to use.
Be provided with flue gas discharge temperature self-con-tained unit 6; Self-con-tained unit 6 is according to the height of the tube wall temperature (as measuring through wall temperature tester 5) (or flue outlet place cigarette temperature) of fume side; The means such as aperture of bypass valve through control heat exchanger 9; Especially; Can when acid dew-point temperature changes, can regulate exhaust gas temperature rapidly through the convenient temperature of regulating saturation waters of thermosistor 7, exhaust gas temperature is reduced to only be higher than or above about 15 ℃ of the flue gas acid dew point temperature of complex phase-change heat exchanger 4 fume side walls.When the design wall surface temperature was lower than flue gas acid dew point, the metal that then contacts with flue gas should adopt suitable anti-corrosion measure or anti-corrosion material.
Embodiment 2:
Be used for the complex phase-change heat exchanger (seeing accompanying drawing 2 and accompanying drawing identifier declaration) that residual heat from boiler fume reclaims; Utilize the working medium of cold fluid 11, comprise the inside and outside equipment of boiler flue 1 and flue and connect pipeline, control instrument valve like conduct recycling waste heats such as water at low temperature (or conduction oil).Be provided with fluid heater 10, complex phase-change heat exchanger 4 in the flue 1, the dedusting of the original economizer of boiler 2, air preheater 3 and original boiler, desulphurization plant etc.Flue is outside equipped with thermosistor 7, heat exchanger 9, frequency modulation water pump 8 and supporting pipeline thereof, instrument valve etc.
Described complex phase-change heat exchanger 4 mainly comprises casing 4-5 and the 4-6 between interior heat exchanger tube 4-1, sleeve pipe 4-2, the first tube sheet 4-3, the second tube sheet 4-4 and the tube sheet.Wherein cold fluid 11 is walked the outer shell side of sleeve pipe, and high-temperature flue gas is walked interior heat exchanger tube, and phase-change working substance is that water is walked the cavity between interior heat exchanger tube and the sleeve pipe.
Saturation water is squeezed into the sleeve pipe of complex phase-change heat exchanger 4 and the cavity between the interior heat exchanger tube through frequency modulation water pump 8; Carry out heat exchange generation steam with the high-temperature flue gas of interior heat exchanger tube 4-1; This high temperature side is equivalent to evaporimeter, and the outer cold fluid 11 of carbonated drink mixture and sleeve pipe carries out heat exchange, plays cooling effect; Low temperature side is equivalent to condenser; By the phase-change working substance between interior heat exchanger tube and sleeve pipe, in an equipment, realized the compound of evaporimeter and condenser, thereby realized the integrated of complex phase-change heat exchanger truly.Since be boiling heat transfer, so the coefficient of heat transfer is high, compact conformation.Carry out steam or the carbonated drink mixture that heat exchange produces with high-temperature flue gas, after the back of coming out got into heat exchanger 9 coolings, saturated condensed water got into thermosistor 7, squeezes into complex phase-change heat exchanger 4 through frequency modulation water pump 8 again, thereby forms the phase-change working substance closed circuit., after heat exchanger 9 heating, after entering fluid heater 10 continues to absorb fume afterheats, become hot fluid 12 and supply follow-up workshop section to use through the cold fluid 11 after the heating of complex phase-change heat exchanger 4 shell sides.
Said thermosistor 7 comprises expansion tank 7-4, heater 7-3 and pressure regulation part; The pressure-regulating portion branch comprises pressure regulator 7-2 and nitrogen cylinder 7-1.When flue gas acid dew point changes, for example increase, regulate pressure regulator 7-2; Air pressure among the expansion tank 7-4 is suitably increased; Start heater 7-3, because pressure increases, original saturation water becomes saturation state from undersaturated condition after heating; Thereby improved the temperature of saturation water, finally reached the purpose of regulating exhaust gas temperature, avoiding cold end corrosion.
Be provided with flue gas discharge temperature self-con-tained unit 6; Self-con-tained unit 6 is according to the height of the tube wall temperature (as measuring through wall temperature tester 5) (or flue outlet place cigarette temperature) of fume side; The means such as aperture of bypass valve through control heat exchanger 9; Especially; Can when acid dew-point temperature changes, can regulate exhaust gas temperature rapidly through the convenient temperature of regulating saturation waters of thermosistor 7, exhaust gas temperature is reduced to only be higher than or above about 15 ℃ of the flue gas acid dew point temperature of complex phase-change heat exchanger 4 fume side walls.
When the design wall surface temperature was lower than flue gas acid dew point, the metal that then contacts with flue gas should adopt suitable anti-corrosion measure or anti-corrosion material.
Embodiment 3:
Complex phase-change heat exchanger 4 of the present invention can also be arranged in horizontal flue, and is as shown in Figure 3.The outer shell side of sleeve pipe is walked flue gas, and interior heat exchanger tube tube side is walked cold fluid to be heated, and the specific embodiment is the same.
Embodiment 4:
The another kind of structure that complex phase-change heat exchanger 4 of the present invention is arranged in horizontal flue, as shown in Figure 4, interior heat exchanger tube is walked flue gas, and the working media of the shell side that sleeve pipe is outer is a cold fluid to be heated, and the specific embodiment is the same.
Embodiment 5:
A kind of structure that complex phase-change heat exchanger 4 of the present invention is arranged in the inclination flue, the specific embodiment is the same.
Embodiment 6:
When a plurality of complex phase-change heat exchanger 4 is set; Answer the thermosistor of supporting independent operating separately; To the different wall surface temperature of each independent phase-change heat-exchange unit controls, that is the corresponding different saturation temperature of phase-change working substance in the cover tube side between heat exchanger tube and the sleeve pipe in the control.When adopting a plurality of fluid heater 10, can adopt series, parallel or series-parallel connection mode to connect.All the other embodiments are the same.
The present invention does not relate to part as adiabatic clamping plate, clamping plate and maybe can adopt prior art to realize with structure, the mounting means of bolt, heat exchanger tube is all identical with existing phase-change heat-exchanger.
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 and heating 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 complex phase-change heat exchanger that residual heat from boiler fume reclaims; It comprises the original economizer of boiler (2), air preheater (3); It is characterized in that: it also comprises at least one fluid heater (10), at least one complex phase-change heat exchanger (4) that is arranged in the boiler flue (1), and is arranged on flue outer thermosistor (7), heat exchanger (9), frequency modulation water pump (8) and supporting pipeline, instrument valve;
Described complex phase-change heat exchanger (4) comprising: heat exchanger tube (4-1) at least one, at least one is set in the casing (4-5) between interior heat exchanger tube (4-1) outer sleeve pipe (4-2), first tube sheet (4-3), second tube sheet (4-4) and the tube sheet;
This complex phase-change heat exchanger forms by the cover tube side between interior heat exchanger tube tube side, interior heat exchanger tube and the sleeve pipe, the outer shell side three journey integral structures of sleeve pipe.
2. the complex phase-change heat exchanger that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
Described complex phase-change heat exchanger (4) also is provided with the casing (4-6) between the tube sheet.
3. the complex phase-change heat exchanger 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 complex phase-change heat exchanger (24) wherein: cover tube side, heat exchanger (9) and thermosistor (7) by frequency modulation water pump (8), complex phase-change heat exchanger (4) are connected to form the loop by the road.
4. the complex phase-change heat exchanger that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
Heat exchanger tube (4-1) adopts pipe or hollow flat tube or curved surface cavity body structure in described, and correspondingly, sleeve pipe (4-2) also adopts the structure that matches.
5. the complex phase-change heat exchanger that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
Said thermosistor (7) comprises expansion tank (7-4), heater (7-3) and pressure regulation part, and the pressure-regulating portion branch comprises pressure regulator (7-2) and nitrogen cylinder (7-1); Described heater (7-3) is arranged in the expansion tank, or is arranged on the pipeline between heat exchanger (9) and expansion tank or expansion tank and the frequency modulation water pump.
6. the complex phase-change heat exchanger that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that: what pass through between heat exchanger tube and sleeve pipe in described is phase-change working substance, and high-temperature flue gas is walked interior heat exchanger tube tube side or walked the outer shell side of sleeve pipe.
7. the complex phase-change heat exchanger that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that:
When heat exchanger tube tube side working media was high-temperature flue gas in described, the working media of the shell side that sleeve pipe is outer was a cold fluid to be heated; When heat exchanger tube tube side working media was a cold fluid to be heated in described, the working media of the shell side that sleeve pipe is outer was a high-temperature flue gas.
8. the complex phase-change heat exchanger that is used for the residual heat from boiler fume recovery according to claim 1 is characterized in that: described cold fluid, medium adopts air, water, conduction oil or other processing mediums.
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| CN2011103546199A CN102410527A (en) | 2011-11-10 | 2011-11-10 | Composite phase change heat exchanger for flue gas heat recovery of boiler |
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| CN102692031A (en) * | 2012-04-18 | 2012-09-26 | 安徽国祯生物质发电有限责任公司 | Heat-exchange technology utilizing flue gas waste heat of biomass boiler |
| CN103994681A (en) * | 2014-06-11 | 2014-08-20 | 上海立殊换热技术设备有限公司 | Vertical flue composite phase change heat exchanger |
| CN104534455A (en) * | 2014-12-29 | 2015-04-22 | 南京春晓农机有限公司 | Biomass combustion equipment |
| 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 |
| CN104848197A (en) * | 2015-03-31 | 2015-08-19 | 浙江华德利纺织印染有限公司 | Device for recycling boiler tail smoke heat |
| CN104913294A (en) * | 2014-10-02 | 2015-09-16 | 大唐(北京)能源管理有限公司 | Waste heat recovery system for smoke discharging of thermal power plant boiler |
| CN108253441A (en) * | 2017-11-30 | 2018-07-06 | 江苏理文造纸有限公司 | A kind of adjusting method of heat exchanger |
| CN108870748A (en) * | 2018-09-07 | 2018-11-23 | 周清桂 | A kind of hot-water boiler |
| CN111603928A (en) * | 2020-05-24 | 2020-09-01 | 西安交通大学 | Efficient, clean and flexible cooperative coal-fired power generation system and operation method |
| CN113834854A (en) * | 2021-09-23 | 2021-12-24 | 上海轻叶能源股份有限公司 | Air bath flue gas acid dew point temperature monitoring system |
| CN115190960A (en) * | 2020-12-24 | 2022-10-14 | 三菱重工业株式会社 | Heat exchanger |
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| CN102692031A (en) * | 2012-04-18 | 2012-09-26 | 安徽国祯生物质发电有限责任公司 | Heat-exchange technology utilizing flue gas waste heat of biomass boiler |
| CN103994681A (en) * | 2014-06-11 | 2014-08-20 | 上海立殊换热技术设备有限公司 | Vertical flue composite phase change heat exchanger |
| CN103994681B (en) * | 2014-06-11 | 2016-01-13 | 上海立殊换热技术设备有限公司 | Vertical flue complex phase-change heat exchanger |
| CN104913294B (en) * | 2014-10-02 | 2018-11-06 | 大唐(北京)能源管理有限公司 | A kind of power plant boiler smoke waste heat recovery system |
| CN104913294A (en) * | 2014-10-02 | 2015-09-16 | 大唐(北京)能源管理有限公司 | Waste heat recovery system for smoke discharging of thermal power plant boiler |
| CN104534455A (en) * | 2014-12-29 | 2015-04-22 | 南京春晓农机有限公司 | Biomass combustion equipment |
| 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 |
| CN104848197A (en) * | 2015-03-31 | 2015-08-19 | 浙江华德利纺织印染有限公司 | Device for recycling boiler tail smoke heat |
| CN108253441A (en) * | 2017-11-30 | 2018-07-06 | 江苏理文造纸有限公司 | A kind of adjusting method of heat exchanger |
| CN108870748A (en) * | 2018-09-07 | 2018-11-23 | 周清桂 | A kind of hot-water boiler |
| CN108870748B (en) * | 2018-09-07 | 2023-05-12 | 周清桂 | Hot water boiler |
| CN111603928A (en) * | 2020-05-24 | 2020-09-01 | 西安交通大学 | Efficient, clean and flexible cooperative coal-fired power generation system and operation method |
| CN111603928B (en) * | 2020-05-24 | 2021-07-06 | 西安交通大学 | Efficient, clean and flexible cooperative coal-fired power generation system and operation method |
| CN115190960A (en) * | 2020-12-24 | 2022-10-14 | 三菱重工业株式会社 | Heat exchanger |
| CN115190960B (en) * | 2020-12-24 | 2023-10-20 | 三菱重工业株式会社 | heat exchanger |
| CN113834854A (en) * | 2021-09-23 | 2021-12-24 | 上海轻叶能源股份有限公司 | Air bath flue gas acid dew point temperature monitoring system |
| CN113834854B (en) * | 2021-09-23 | 2023-12-29 | 上海轻叶能源股份有限公司 | Acid dew point temperature monitoring system for air bath flue gas |
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Application publication date: 20120411 |