CN105571354B - Flue gas waste heat recovery apparatus and flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger - Google Patents
Flue gas waste heat recovery apparatus and flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger Download PDFInfo
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- CN105571354B CN105571354B CN201610078839.6A CN201610078839A CN105571354B CN 105571354 B CN105571354 B CN 105571354B CN 201610078839 A CN201610078839 A CN 201610078839A CN 105571354 B CN105571354 B CN 105571354B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
Abstract
The present invention relates to a kind of flue gas waste heat recovery apparatus and flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger.There is presently no a kind of flue gas waste heat recovery apparatus reasonable in design and method.The flue gas waste heat recovery apparatus of the present invention includes heat exchanger shell, tube sheet, tedge, rise header, condensate outlet is taken over, down-comer, decline header, flue gas heat exchange tube is arranged, double-U-shaped tube bank and pass partition, it is horizontal heat release chamber in heat exchanger shell, tube sheet is arranged in heat exchanger shell, heat exchanger shell is divided into left section and right section and horizontal heat release chamber is separated into left chamber and right chamber by tube sheet, one end of flue gas heat exchange tube row is connected by rising header with tedge, the other end is connected by declining header with down-comer, double-U-shaped tube bank is fixed in the right chamber of heat exchanger shell by tube sheet.The present invention had both ensured that flue gas heat exchange tube was drained and has avoided low-temperature corrosion entirely, and ensured that shell-and-tube heat exchanger is not susceptible to reveal again when condensing water flow is smaller.
Description
Technical field
The present invention relates to a kind of flue gas waste heat recovery apparatus based on double-U-shaped shell-and-tube heat exchanger and flue gas waste heat recovery side
Method, it is mainly used in coal-fired power station boiler field, being capable of Mist heat recovering and reduction station boiler pollutant emission.
Background technology
Domestic many coal-fired power station boilers cause boiler due to many reasons such as design and manufacture, combustion adjustment, coal changes
Exhaust gas temperature substantial deviation design load, is approximately higher than 20 DEG C -50 DEG C of design load.Exhaust gas temperature is higher to cause heat loss due to exhaust gas to increase
Add, boiler efficiency reduces, and so as to directly affect thermal power unit operation economy, is unfavorable for saving.Exhaust gas temperature raises, and can also draw
Fly ash resistivity and exhaust gas volumn increase are played, so as to reduce the efficiency of dust collection of electric cleaner, is unfavorable for environmental protection.
To overcome above mentioned problem, occur various informative flue gas waste heat recovery apparatus both at home and abroad, than it is more typical have it is low
Warm economizer and horizontal type phase-change heat exchanger.Low-level (stack-gas) economizer is a kind of heat exchanger being arranged in boiler back end ductwork, and flue gas exists
The outer heat release of heat exchanger tube, condensate absorb heat in heat exchanger tube.Low-level (stack-gas) economizer can reclaim cigarette by being effectively reduced boiler tail cigarette temperature
Gas waste heat, but condensate, because condensate inlet water temperature degree is usually less than flue gas acid dew point, is led directly in heat exchange intraductal heat exchange
Cause heat exchanger tube minimum wall temperature to be less than flue gas acid dew point, heat exchanger tube discharge is given birth to low-temperature corrosion, in order to slow down low-temperature corrosion speed,
Heat exchanger tube row needs the more expensive anti-corrosion material of use cost.As Publication No. CN104964266A Chinese patent in, disclose
A kind of flue gas boiler waste heat utilization system, as low-pressure economizer system, the problem of system there is low-temperature corrosion.Horizontal phase
The main body for becoming heat exchanger is made up of flue gas heat exchange tube row and shell-and-tube heat exchanger, passes through the lowermost wall for controlling flue gas heat exchange tube to arrange
Temperature, flue gas acid dew point is made it higher than, burn into does not condense to ensure flue gas heat exchange tube row.But shell-and-tube heat exchanger is common
Structure type only has fixed tube sheet type and single U-tube formula.In order to ensure that the turbulent heat transfer of condensate in pipe for shell-and-tube exchanger is imitated
Fruit, condensing water flow velocity has minimum limits value, when the condensing water flow very little in pipe for shell-and-tube exchanger, expires condensing water flow velocity
In the case that foot requires, heat exchanger tube must be very long, and this make it that whole shell-and-tube heat exchanger is excessively long and narrow, and heat exchanger tube row's rigidity becomes
Difference, is unfavorable for the rigid support of heat exchanger tube row and whole shell-and-tube heat exchanger, and influences good appearance.And for example Publication No.
In CN101907413A Chinese patent, a kind of horizontal type phase-change heat exchanger is disclosed, the horizontal type phase-change heat exchanger is using single U
The shell-and-tube heat exchanger of type tubular type, the horizontal type phase-change heat exchanger are used for Mist heat recovering, can avoid flue gas heat exchange tube completely
The acid corrosion phenomenon of row.When recyclable fume afterheat amount is more, the horizontal type phase-change heat exchanger is relatively applicable, but working as to return
When the fume afterheat amount of receipts is less, the condensing capacity of heating is also smaller, using the flue gas waste heat recovery apparatus of the form, can cause
U-tube Shu Changdu is long, and whole shell-and-tube heat exchanger is excessively long and narrow, heat exchanger tube row rigidity be deteriorated, be unfavorable for heat exchanger tube row and
The rigid support of whole shell-and-tube heat exchanger, and influence good appearance.
In summary, it can both can guarantee that flue gas changed when the condensing water flow being heated is smaller there is presently no a kind of
Heat pipe is drained to avoid low-temperature corrosion entirely, and and can ensures that shell-and-tube heat exchanger is not susceptible to the flue gas waste heat recovery apparatus and cigarette of leakage
Gas exhaust heat recovering method.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and offer is a kind of reasonable in design,
When condensing water flow is smaller, it both can guarantee that flue gas heat exchange tube was drained and avoided low-temperature corrosion entirely, and can ensures shell-and-tube heat exchanger
It is not susceptible to the flue gas waste heat recovery apparatus and flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger of leakage.
Technical scheme is used by the present invention solves the above problems：More than the flue gas based on double-U-shaped shell-and-tube heat exchanger
The design feature of heat reclamation device is：Including heat exchanger shell, tube sheet, water inlet adapter, water outlet pipe, vapor inlet connecting pipe,
Tedge, rise header, condensate outlet adapter, down-comer, decline header, flue gas heat exchange tube row, double-U-shaped tube bank, liquid
Position meter and pass partition, the interior heat exchanger shell is a horizontal heat release chamber, and the tube sheet is arranged in heat exchanger shell, should
Tube sheet by heat exchanger shell be divided into left section and right section and by the horizontal heat release chamber in heat exchanger shell be separated into independent left chamber and
Right chamber, the water inlet adapter and water outlet pipe are installed in left section of heat exchanger shell, the water inlet adapter and water outlet pipe difference
It is connected installed in the top and bottom of heat exchanger shell and with the left chamber in heat exchanger shell, the vapor inlet connecting pipe
On heat exchanger shell, the vapor inlet connecting pipe is connected with the right chamber in heat exchanger shell, one end of the tedge
It is connected with vapor inlet connecting pipe, the other end of the tedge is connected with rising header, and the condensate outlet adapter is arranged on
The bottom of heat exchanger shell, the condensate outlet adapter is connected with the right chamber of heat exchanger shell, one end of the down-comer and
Condensate outlet adapter connection, the other end of the down-comer are connected with declining header, and one end of the flue gas heat exchange tube row leads to
Cross rising header to be connected with tedge, the other end of flue gas heat exchange tube row is connected by declining header with down-comer, institute
Double-U-shaped tube bank to be stated to be fixed in the right chamber of heat exchanger shell by tube sheet, this is double-U-shaped to restrain by upper and lower two groups of U-tube Shu Zucheng,
The liquid level gauge is arranged on heat exchanger shell, the right chamber phase of upper connecting tube and lower linking tube with heat exchanger shell in the liquid level gauge
Connection, the pass partition are arranged in the left chamber of heat exchanger shell, and the pass partition is by the left chamber of heat exchanger shell from up to
Under be separated into low temperature cavity, medium temperature chamber and high temperature chamber successively.So that the flue gas waste heat recovery apparatus can be solidifying what is be heated
Bear water flow it is smaller when, both can guarantee that flue gas heat exchange tube was drained and avoided low-temperature corrosion entirely, and can ensures that shell-and-tube heat exchanger is not easy
Reveal.
Preferably, vapor inlet connecting pipe of the present invention is arranged on the top of heat exchanger shell.
Preferably, the quantity of vapor inlet connecting pipe of the present invention is four.
Preferably, in double-U-shaped tube bank of the present invention, the upper semisection and heat exchanger of one group located above of U-tube beam
The low temperature cavity of the left chamber of housing is connected, and the lower semisection of one group located above of U-tube beam and is located below one group of U-tube
The upper semisection of beam is connected with the medium temperature chamber of the left chamber of heat exchanger shell, be located below one group U-tube beam lower semisection with
The high temperature chamber of the left chamber of heat exchanger shell is connected.
Preferably, tube sheet of the present invention is in vertical shape structure.
Preferably, flue gas waste heat recovery apparatus of the present invention also includes supporting plate, the supporting plate is interspersed in double-U-shaped
Between the U-tube beam of tube bank.Supporting plate is used for supporting double-U-shaped tube bank.
Preferably, the horizontal structure of pass partition of the present invention.
A kind of flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger, its feature are：The fume afterheat returns
The step of receiving method, is as follows：After the waste heat of the outer flue gas of closed cycle water absorption tube in flue gas heat exchange tube row, undergo phase transition to be formed
Steam water interface, steam water interface enter heat exchanger shell by rising header, tedge and vapor inlet connecting pipe successively
In right chamber, the bottom of right chamber is then fallen under double-U-shaped tube bank condensed exterior heat release, the condensate liquid of formation, then successively by condensation
Come back in flue gas heat exchange tube row and absorb heat after liquid discharge connection, down-comer and decline header, form an enclosed and follow naturally
Ring；Low-temperature condensate, into the low temperature cavity of the left chamber of heat exchanger shell, then flows sequentially through double-U-shaped tube bank by adapter of intaking
One group of U-tube beam, medium temperature chamber, one group of U-tube beam and high temperature chamber below double-U-shaped tube bank above, absorbed in double-U-shaped tube bank right
Intracavitary steam condensation liberated heat becomes condensed water in high temperature, then is drawn from water outlet pipe.So that in heated condensation
When water-carrying capacity is smaller, both ensured that flue gas heat exchange tube was drained and avoided low-temperature corrosion entirely, and ensured that shell-and-tube heat exchanger is not susceptible to let out again
Dew.
Preferably, the quantity of vapor inlet connecting pipe of the present invention is four, four vapor inlet connecting pipes are installed in
The top of heat exchanger shell, out of flue gas heat exchange tube row caused steam water interface flow through successively rise header and tedge it
Afterwards, it is divided into four tunnels to enter in the right chamber of heat exchanger shell by four vapor inlet connecting pipes.
The present invention compared with prior art, has advantages below and effect：1st, passed using the two-stage phase transformation of closed cycle water
Heat, fume afterheat is heated to the condensate of low adding system, can squeeze low plus draw gas, improve Unit Economic efficiency, reduce unit
Gross coal consumption rate.2nd, steam water interface enters heat release intracavitary above shell-and-tube heat exchanger housing, it is ensured that steam with it is U-shaped
Condensate in tube bank fully exchanges heat, good effect of heat exchange.3rd, filled using the flue gas waste heat recovery based on double-U-shaped shell-and-tube heat exchanger
Put so that when the condensing water flow being heated is smaller, both can guarantee that flue gas heat exchange tube was drained and avoided low-temperature corrosion entirely, and can is protected
Card shell-and-tube heat exchanger is not susceptible to reveal.4th, simple in construction, reasonable in design, design is unique, and easy to use, market prospects are wide
It is wealthy.
Brief description of the drawings
Fig. 1 is the front view structure of the flue gas waste heat recovery apparatus based on double-U-shaped shell-and-tube heat exchanger in the embodiment of the present invention
Schematic diagram.
Fig. 2 is the left view structure of the flue gas waste heat recovery apparatus based on double-U-shaped shell-and-tube heat exchanger in the embodiment of the present invention
Schematic diagram.
In figure：1- heat exchanger shells, 2- tube sheets, 3- water inlets adapter, 4- water outlet pipes, 5- vapor inlet connecting pipes, 6- rise
Pipe, 7- rise header, the adapter of 8- condensate outlets, 9- down-comers, 10- decline header, 11- flue gas heat exchange tubes are arranged, 12- is double
U-tube beam, 13- supporting plates, 14- liquid level gauges, 15- pass partitions.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, and following examples are to this hair
Bright explanation and the invention is not limited in following examples.
Embodiment.
Referring to Fig. 1 to Fig. 2, the flue gas waste heat recovery apparatus based on double-U-shaped shell-and-tube heat exchanger in the present embodiment includes changing
Hot device housing 1, tube sheet 2, water inlet adapter 3, water outlet pipe 4, vapor inlet connecting pipe 5, tedge 6, rising header 7, condensate liquid
Discharge connection 8, down-comer 9, decline header 10, flue gas heat exchange tube row 11, double-U-shaped tube bank 12, supporting plate 13, the and of liquid level gauge 14
Pass partition 15.
It is a horizontal heat release chamber in heat exchanger shell 1 in the present embodiment, as shown in figure 1, the tube sheet 2 in the present embodiment
In heat exchanger shell 1, tube sheet 2 is in vertical shape structure, and heat exchanger shell 1 is separated into left section and right section by tube sheet 2, and will
Horizontal heat release chamber in heat exchanger shell 1 is separated into independent left chamber and right chamber.
Water inlet adapter 3 and water outlet pipe 4 in the present embodiment are installed in left section of heat exchanger shell 1, the water inlet adapter 3
With water outlet pipe 4 be separately mounted to the top of heat exchanger shell 1 and the bottom of heat exchanger shell 1 and with heat exchanger shell 1
Interior left chamber is connected.Vapor inlet connecting pipe 5 in the present embodiment is arranged on heat exchanger shell 1, and vapor inlet connecting pipe 5 is with changing
1 right chamber is connected in hot device housing.One end of tedge 6 in the present embodiment is connected with vapor inlet connecting pipe 5, tedge 6
The other end with rise header 7 be connected.Condensate outlet adapter 8 in the present embodiment is arranged on the bottom of heat exchanger shell 1,
Condensate outlet adapter 8 is connected with the right chamber of heat exchanger shell 1, and one end of down-comer 9 is connected with condensate outlet adapter 8,
The other end of down-comer 9 is connected with declining header 10.One end of flue gas heat exchange tube row 11 in the present embodiment passes through tedge
Header 7 is connected with tedge 6, and the other end of flue gas heat exchange tube row 11 is connected by declining header 10 with down-comer 9.
Double-U-shaped tube bank 12 in the present embodiment is fixed in the right chamber of heat exchanger shell 1 by tube sheet 2, it is double-U-shaped tube bank 12 by
Upper and lower two groups of U-tubes Shu Zucheng, the structure after every group of 90 degree of U-tube Shu Juncheng " U " words rotate counterclockwise, supporting plate 13 are interspersed in
Between double-U-shaped tube bank 12, supporting plate 13 is used for supporting double-U-shaped tube bank 12.Liquid level gauge 14 in the present embodiment is arranged on heat exchanger shell
On body 1, the right chamber of upper connecting tube and lower linking tube with heat exchanger shell 1 in liquid level gauge 14 is connected, and pass partition 15 is arranged on
In the left chamber of heat exchanger shell 1,15 horizontal structure of pass partition, pass partition 15 is by the left chamber of heat exchanger shell 1 from upper
It is separated into low temperature cavity, medium temperature chamber and high temperature chamber successively under.
Vapor inlet connecting pipe 5 in the present embodiment is arranged on the top of heat exchanger shell 1.The quantity of vapor inlet connecting pipe 5
Preferably four, four vapor inlet connecting pipes 5 are typically each in vertical shape structure.
In the double-U-shaped tube bank 12 of the present embodiment, upper semisection and the heat exchanger shell 1 of located above one group of U-tube beam
The low temperature cavity of left chamber is connected, the lower semisection of one group of U-tube beam located above and the upper semisection for being located below one group of U-tube beam
It is connected with the medium temperature chamber of the left chamber of heat exchanger shell 1, is located below the lower semisection and heat exchanger shell 1 of one group of U-tube beam
The high temperature chamber of left chamber be connected.
The step of flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger in the present embodiment, is as follows：Flue gas changes
After the waste heat of the outer flue gas of water absorption tube in heat pipe row 11, the water in flue gas heat exchange tube row 11 undergoes phase transition to form steam-water mixing
Thing, the right side that steam water interface enters in heat exchanger shell 1 by rising header 7, tedge 6 and vapor inlet connecting pipe 5 successively
Intracavitary, then steam water interface fallen on after 12 condensed exterior heat releases of double-U-shaped tube bank, steam water interface condensation under the condensate liquid that is formed
The bottom of right chamber, and be back to flue gas again by condensate outlet adapter 8, down-comer 9 and after declining header 10 successively and change
In heat pipe row 12, the water being back in flue gas heat exchange tube row 12 continues to absorb heat, and forms an enclosed Natural Circulation.
Low-temperature condensate in the present embodiment enters the low temperature cavity of the left chamber of heat exchanger shell 1 by adapter 3 of intaking, then
One group of U-tube beam below in one group of U-tube beam above in double-U-shaped tube bank 12, medium temperature chamber, double-U-shaped tube bank 12 is flowed through successively
With high temperature chamber, low-temperature condensate absorbs steam condensation liberated heat in right chamber in double-U-shaped tube bank 12 and becomes condensed water in high temperature
Afterwards, then from water outlet pipe 4 draw.So that when heated condensing water flow is smaller, it both can guarantee that flue gas heat exchange tube was arranged
11 avoid the situation of low-temperature corrosion completely, and and can ensures that shell-and-tube heat exchanger is not susceptible to reveal.
The present embodiment is four when the quantity of vapor inlet connecting pipe, and four vapor inlet connecting pipes are installed in heat exchanger shell
During the top of body, after caused steam water interface flows through rising header and tedge successively out of flue gas heat exchange tube row, meeting
It is divided into four tunnels to enter in the right chamber of heat exchanger shell by four vapor inlet connecting pipes so that steam water interface is in right chamber
Heat release is more uniform, and heat transfer effect is more preferable.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different, and the above content described in this specification is only to structure example explanation of the present invention.It is all according to
The equivalence changes or simple change done according to the construction described in inventional idea of the present invention, feature and principle, are included in this hair
In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment
The modification of various kinds or supplement are substituted using similar mode, without departing from structure of the invention or surmount present claims
Scope defined in book, protection scope of the present invention all should be belonged to.
Claims (7)
- A kind of 1. flue gas waste heat recovery apparatus based on double-U-shaped shell-and-tube heat exchanger, it is characterised in that：Including heat exchanger shell, Tube sheet, water inlet adapter, water outlet pipe, vapor inlet connecting pipe, tedge, rising header, condensate outlet adapter, down-comer, Decline header, flue gas heat exchange tube row, double-U-shaped tube bank, liquid level gauge and pass partition, be one horizontal in the heat exchanger shell Heat release chamber, the tube sheet are arranged in heat exchanger shell, and heat exchanger shell is divided into left section and right section and by heat exchanger by the tube sheet Horizontal heat release chamber in housing is separated into independent left chamber and right chamber, and the water inlet adapter and water outlet pipe are installed in heat exchanger Left section of housing, the water inlet adapter and water outlet pipe are separately mounted to top and bottom of heat exchanger shell and and heat exchanger Left chamber in housing is connected, and the vapor inlet connecting pipe is arranged on heat exchanger shell, the vapor inlet connecting pipe and heat exchanger Right chamber in housing is connected, and one end of the tedge is connected with vapor inlet connecting pipe, the other end of the tedge and rising Header connects, and the condensate outlet adapter is installed in the bottom of heat exchanger shell, condensate outlet adapter and heat exchanger The right chamber of housing is connected, and one end and the condensate outlet adapter of the down-comer connect, the other end of the down-comer and decline Header is connected, and one end of the flue gas heat exchange tube row is connected by rising header with tedge, flue gas heat exchange tube row's The other end is connected by declining header with down-comer, and the double-U-shaped tube bank is fixed on the right chamber of heat exchanger shell by tube sheet Interior, the double-U-shaped tube bank is by upper and lower two groups of U-tubes Shu Zucheng, and the liquid level gauge is arranged on heat exchanger shell, in the liquid level gauge Upper connecting tube and lower linking tube are connected with the right chamber of heat exchanger shell, and the pass partition is arranged on the left chamber of heat exchanger shell Interior, the left chamber of heat exchanger shell is separated into low temperature cavity, medium temperature chamber and high temperature chamber by the pass partition successively from top to bottom；Added When the condensing water flow of heat is smaller, both ensured that flue gas heat exchange tube was drained and avoided low-temperature corrosion entirely, and ensured shell-and-tube heat exchanger not again Easily reveal；The tube sheet is in vertical shape structure；The horizontal structure of pass partition.
- 2. the flue gas waste heat recovery apparatus according to claim 1 based on double-U-shaped shell-and-tube heat exchanger, it is characterised in that： The vapor inlet connecting pipe is arranged on the top of heat exchanger shell.
- 3. the flue gas waste heat recovery apparatus according to claim 1 based on double-U-shaped shell-and-tube heat exchanger, it is characterised in that： The quantity of the vapor inlet connecting pipe is four.
- 4. the flue gas waste heat recovery apparatus according to claim 1 based on double-U-shaped shell-and-tube heat exchanger, it is characterised in that： In the double-U-shaped tube bank, the upper semisection of one group located above of U-tube beam is connected with the low temperature cavity of the left chamber of heat exchanger shell It is logical, the lower semisection of one group located above of U-tube beam and be located below one group U-tube beam upper semisection with heat exchanger shell The medium temperature chamber of the left chamber of body is connected, and is located below the lower semisection of one group of U-tube beam and the high temperature of the left chamber of heat exchanger shell Chamber is connected.
- 5. the flue gas waste heat recovery apparatus according to claim 1 based on double-U-shaped shell-and-tube heat exchanger, it is characterised in that： The flue gas waste heat recovery apparatus also includes supporting plate, and the supporting plate is interspersed between the U-tube beam of double-U-shaped tube bank.
- A kind of 6. flue gas waste heat recovery based on double-U-shaped shell-and-tube heat exchanger as described in claim 1-5 any claims The flue gas waste heat recovery method of device, it is characterised in that：The step of flue gas waste heat recovery method, is as follows：Flue gas heat exchange tube is arranged After the waste heat of the outer flue gas of interior closed cycle water absorption tube, undergo phase transition to form steam water interface, steam water interface passes through successively Rise header, tedge and vapor inlet connecting pipe to enter in the right chamber of heat exchanger shell, then put in double-U-shaped tube bank condensed exterior Heat, falls on the bottom of right chamber under the condensate liquid of formation, then takes over successively by condensate outlet, down-comer and after declining header Come back in flue gas heat exchange tube row and absorb heat, form an enclosed Natural Circulation；Low-temperature condensate is entered by adapter of intaking to be changed The low temperature cavity of the left chamber of hot device housing, then flow sequentially through one group of U-tube beam, medium temperature chamber, double u-tube above double-U-shaped tube bank One group of U-tube beam and high temperature chamber below beam, steam condensation liberated heat in right chamber is absorbed in double-U-shaped tube bank and becomes high temperature Condensate, then drawn from water outlet pipe.
- 7. the fume afterheat of the flue gas waste heat recovery apparatus according to claim 6 based on double-U-shaped shell-and-tube heat exchanger returns Receiving method, it is characterised in that：The quantity of the vapor inlet connecting pipe is four, and four vapor inlet connecting pipes are installed in heat exchanger The top of housing, after caused steam water interface flows through rising header and tedge successively out of flue gas heat exchange tube row, point Entered for four tunnels by four vapor inlet connecting pipes in the right chamber of heat exchanger shell.
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| CN201610078839.6A CN105571354B (en) | 2016-02-04 | 2016-02-04 | Flue gas waste heat recovery apparatus and flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger |
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| CN201610078839.6A CN105571354B (en) | 2016-02-04 | 2016-02-04 | Flue gas waste heat recovery apparatus and flue gas waste heat recovery method based on double-U-shaped shell-and-tube heat exchanger |
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| CN108377634A (en) * | 2018-04-25 | 2018-08-07 | 四川大学 | Cooling system and method based on phase-change thermal energy conversion |
| CN108397762B (en) * | 2018-06-04 | 2023-10-31 | 周舒丹 | System for promote economizer export cigarette temperature |
| CN114152113A (en) * | 2021-11-03 | 2022-03-08 | 华能核能技术研究院有限公司 | High temperature resistant type heat exchanger |
| CN114322595B (en) * | 2022-01-13 | 2022-07-19 | 山东飞洋节能技术有限公司 | Low-end-difference anti-corrosion efficient waste heat recovery energy-saving system and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075331U (en) * | 1990-11-01 | 1991-04-17 | 刘霖沛 | Dual hole horizontal volune type heat-exchange apparatus having turbulent spiral |
| CN1519530A (en) * | 2003-01-25 | 2004-08-11 | 徐宝安 | Equipment of water box in condensator contaning many media for heat recovery as well as installation method |
| CN203731933U (en) * | 2013-12-23 | 2014-07-23 | 大连熵立得传热技术有限公司 | Heat pipe heat exchanger with controllable heat medium outlet temperature |
| CN205537221U (en) * | 2016-02-04 | 2016-08-31 | 杭州华电能源工程有限公司 | Residual heat from flue gas device based on double -U -shaped shell and tube type heat exchanger |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200993548Y (en) * | 2006-12-20 | 2007-12-19 | 沈志康 | U-shape tubular heat exchanger |
| CN103900410B (en) * | 2014-04-02 | 2015-12-30 | 杭州华电能源工程有限公司 | A kind of phase change heat exchange device and heat-exchange method thereof |
| KR101472302B1 (en) * | 2014-09-18 | 2014-12-12 | 김종남 | Anti-vibration support for U-band pipe of gas cooler with air cooling type |
-
2016
- 2016-02-04 CN CN201610078839.6A patent/CN105571354B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075331U (en) * | 1990-11-01 | 1991-04-17 | 刘霖沛 | Dual hole horizontal volune type heat-exchange apparatus having turbulent spiral |
| CN1519530A (en) * | 2003-01-25 | 2004-08-11 | 徐宝安 | Equipment of water box in condensator contaning many media for heat recovery as well as installation method |
| CN203731933U (en) * | 2013-12-23 | 2014-07-23 | 大连熵立得传热技术有限公司 | Heat pipe heat exchanger with controllable heat medium outlet temperature |
| CN205537221U (en) * | 2016-02-04 | 2016-08-31 | 杭州华电能源工程有限公司 | Residual heat from flue gas device based on double -U -shaped shell and tube type heat exchanger |
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