CN109297341A - A kind of steam power plant's waste-heat recovery device - Google Patents
A kind of steam power plant's waste-heat recovery device Download PDFInfo
- Publication number
- CN109297341A CN109297341A CN201811093578.0A CN201811093578A CN109297341A CN 109297341 A CN109297341 A CN 109297341A CN 201811093578 A CN201811093578 A CN 201811093578A CN 109297341 A CN109297341 A CN 109297341A
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- China
- Prior art keywords
- cambered surface
- flue gas
- heat
- surface shell
- heat exchange
- Prior art date
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- 239000002918 waste heat Substances 0.000 title claims abstract description 53
- 238000011084 recovery Methods 0.000 title claims abstract description 44
- 239000003546 flue gas Substances 0.000 claims abstract description 143
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 142
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 75
- 239000000779 smoke Substances 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical group C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
Abstract
The invention belongs to heat recovery technology fields, specifically, the present invention relates to a kind of steam power plant's waste-heat recovery device, including the heat exchange agent feed liquor case and heat exchange agent liquid outlet tank connected by heat exchanger tube；It further include cambered surface shell, the cambered surface shell is connected to smoke inlet pipe, flue gas escape pipe respectively；Flue gas enters the cambered surface shell by the smoke inlet pipe, rotates in the cambered surface shell, is discharged by the flue gas escape pipe, and the cambered surface shell is used to improve the heat exchange efficiency of flue gas and the heat exchange intraductal heat exchange agent；Wherein, the heat exchanger tube runs through the cambered surface shell.Steam power plant's waste-heat recovery device provided by the invention can be such that flue gas rotates in cambered surface enclosure interior, and the time of contact of flue gas and heat exchanger tube is long, and contact area is big, so as to improve the heat exchange efficiency of flue gas and the agent that exchanges heat, have the characteristics that heat exchange efficiency is high.
Description
Technical field
The invention belongs to heat recovery technology fields, specifically, the present invention relates to a kind of steam power plant's waste-heat recovery devices.
Background technique
Originally, in recent years, due to the anxiety of the energy, energy-saving work is got in enterprise for the energy-saving existence for being enterprise
Paid attention to get over.In heat and power plant, the various advanced energy saving type of furnaces are gradually improved, so that fuel combustion is increasingly reasonable, however, making
For another break-through point that heat and power plant is energy-saving, the research and development for the waste-heat recovery device of flue gas are still not so good as people's will, and current is remaining
Heat recovery apparatus still has the low problem of heat exchange efficiency, and the flue gas after heat exchange still contains very high heat.
Existing waste-heat recovery device has very much, for example, application No. is the 201510776248.1, applying date be 2015 11
The moon 16, the patent application document that invention and created name is a kind of Multipurpose afterheat recovery device, this application are related to a kind of multi-purpose
Way waste-heat recovery device mainly includes main flue gas waste heat heat exchanging pipe, secondary flue gas waste heat for heat exchange pipeline and heating, life with changing
Hot device, main flue gas waste heat heat exchanging pipe and secondary flue gas waste heat for heat exchange pipeline and smoke contacts, secondary flue gas waste heat for heat exchange piping connection
There are heating, daily necessity heat exchanger.Although this application can realize heat recovery to a certain extent, flue gas and pipeline it
Between heat-exchange time it is short, contact area is small, however it remains the low problem of heat exchange efficiency, and structure is complicated for heat-exchanger rig, manufacture
There is inconvenience with using more.
Summary of the invention
The present invention provides a kind of steam power plant's waste-heat recovery devices, are able to solve the low technology of heat exchange efficiency in the prior art
Problem.
To solve the above-mentioned problems, the present invention provides a kind of steam power plant's waste-heat recovery device, its technical solution is as follows:
A kind of steam power plant's waste-heat recovery device, including the heat exchange agent feed liquor case that is connected by heat exchanger tube and heat exchange agent liquid outlet tank,
Heat exchange agent inlet pipe injection heat exchange agent of the heat exchange agent feed liquor case by side, the heat exchange heat exchange of the agent liquid outlet tank by side
The discharge heat exchange agent of agent outlet pipe；It further include cambered surface shell, the cambered surface shell is connected to smoke inlet pipe, flue gas escape pipe respectively；
Flue gas enters the cambered surface shell by the smoke inlet pipe, rotates in the cambered surface shell, by the flue gas outlet
Pipe discharge, the cambered surface shell are used to improve the heat exchange efficiency of flue gas and the heat exchange intraductal heat exchange agent；Wherein, the heat exchanger tube
Through the cambered surface shell.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: the smoke inlet pipe, the flue gas escape pipe
It is located at the two sides of the cambered surface shell.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: the smoke inlet pipe, the flue gas escape pipe
In horizontal positioned.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: the cambered surface shell is spherical shell.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: the smoke inlet pipe is located at the cambered surface shell
The lower part of body, the flue gas escape pipe are located at the top of the cambered surface shell.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: further include accelerating heat-exchanger rig, the acceleration is changed
Thermal is mounted on the cambered surface shell, for improving the heat exchange efficiency of flue gas and the heat exchange intraductal heat exchange agent.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: the acceleration heat-exchanger rig includes being sequentially communicated
Influent stream pipe, auxiliary heat-exchanging blower and outflow tube；The air inlet of the auxiliary heat-exchanging blower is connected to the influent stream pipe, described auxiliary
The air outlet of heat exchange blower fan is helped to be connected to the outflow tube；The influent stream pipe, the outflow tube and respectively with the cambered surface shell
Connection.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: the influent stream pipe is located at the smoke inlet pipe
Top, the outflow tube is located at the lower section of the flue gas escape pipe.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: it further include deflector, the deflector inclination peace
In the cambered surface shell, the baffle quantity be two, and respectively with the smoke inlet pipe, the flue gas escape pipe
Match.
Such as above-mentioned steam power plant's waste-heat recovery device, further preferably are as follows: further include diversion column, the diversion column is mounted on
In the cambered surface shell, it is connect by bracket with the side wall of the cambered surface shell in the cambered surface housing central section.
Analysis it is found that compared with prior art, the advantages and beneficial effects of the present invention are:
1, the heat exchange agent feed liquor case of steam power plant's waste-heat recovery device of the invention is changed by heat exchange agent inlet pipe injection heat exchange agent
Heat exchange occurs at heat exchanger tube with flue gas for thermit powder, and is discharged at heat exchange agent liquid outlet tank by heat exchange agent outlet pipe；High-temperature flue gas by
Smoke inlet pipe enters cambered surface shell, and is discharged by flue gas escape pipe, and flue gas is rotated in cambered surface enclosure interior, is capable of increasing
It with the contact area of heat exchanger tube, and extends contact time, so that the heat in flue gas be made more to be transmitted in heat exchange agent, improves
The heat exchange efficiency of flue gas and the agent of heat exchanger tube internal heat, has the characteristics that heat exchange efficiency is high；Meanwhile heat exchange agent feed liquor of the invention
Case is connected with heat exchange agent liquid outlet tank by heat exchanger tube, encirclement cambered surface shell outside heat exchanger tube, cambered surface shell respectively with smoke inlet pipe,
Flue gas escape pipe connection, it is simple for structure compact, be easy to use, also have it is simple for structure it is compact, manufacturing cost is cheap, uses simplicity
The characteristics of.
2, the smoke inlet pipe of steam power plant's waste-heat recovery device of the invention, flue gas escape pipe are located at cambered surface shell
Two sides, and smoke inlet pipe, flue gas escape pipe, in being horizontally arranged, high-temperature flue gas will not when cambered surface enclosure interior rotates
It is directly blown into inside flue gas escape pipe, is not easy to be discharged from flue gas escape pipe, is able to extend the time of contact of flue gas and heat exchanger tube,
The heat exchange efficiency for improving flue gas and the agent that exchanges heat, has flue gas residence heat-exchange time long, the high feature of heat exchange efficiency.
3, the smoke inlet pipe of steam power plant's waste-heat recovery device of the invention is located at the lower part of cambered surface shell, flue gas escape pipe
Positioned at the top of cambered surface shell, high-temperature flue gas exchange thermit powder is first preheated, and is reheated, be can make full use of the waste heat in flue gas, mention
High heat exchange efficiency；Accelerate heat-exchanger rig to be mounted on cambered surface shell, can be improved the flow velocity of flue gas, increases changing in the unit time
Hot number；Influent stream pipe is located at the top of smoke inlet pipe, and outflow tube is located at the lower section of flue gas escape pipe, can increase flue gas in arc
The intracorporal number of revolutions of face-piece has heat-exchange time length, heat exchange efficiency to extend flue gas in the intracorporal heat-exchange time of cambered surface shell
High feature.
4, steam power plant's waste-heat recovery device of the invention further includes deflector and diversion column, and deflector is for guiding flue gas edge
Cambered surface inner walls rotational flow, and bridging effect is played to flue gas, to extend flue gas in the intracorporal heat-exchange time of cambered surface shell
And improve heat exchange efficiency；Cambered surface shell is spherical shell, can be improved service life of the invention；Diversion column is mounted on cambered surface shell
In vivo, it is convenient for flue gas rotational flow in cambered surface shell, exchanges heat so that flue gas and heat exchange agent are stablized, there is long service life, change
The feature that the hot time is long, heat exchange efficiency is high, heat exchange is stable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of steam power plant's waste-heat recovery device provided by the invention.
Fig. 2 is cambered surface enclosure interior flow of flue gas schematic diagram of the invention.
In figure: 1- heat exchange agent feed liquor case；2- heat exchange agent inlet pipe；3- flue gas escape pipe；4- cambered surface shell；5- heat exchange agent goes out
Pipe；6- heat exchange agent liquid outlet tank；7- influent stream pipe；8- auxiliary heat-exchanging blower；9- outflow tube；10- diversion column；11- deflector；12- cigarette
Gas air inlet pipe；13- heat exchanger tube.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
Heat exchange is also known as heat exchange, is the process that thermal energy is directly or indirectly transmitted to cold fluid from hot fluid, in heat exchange, heat exchange
The more high then heat utilization rate of efficiency is higher, and energy loss is smaller.
As depicted in figs. 1 and 2, the present invention provides a kind of steam power plant's waste-heat recovery devices, including are connected by heat exchanger tube 13
Heat exchange agent feed liquor case 1 and heat exchange agent liquid outlet tank 6, heat exchanger tube 13 be it is multiple, heat exchange agent by pump by 1 side of heat exchange agent feed liquor case
The injection heat exchange agent feed liquor case 1 of heat exchange agent inlet pipe 2 in, heat exchange agent liquid outlet tank 6 is led heat exchange agent by the heat exchange agent outlet pipe 5 of side
It is discharged after stream；It further include cambered surface shell 4, cambered surface shell 4 is connected to smoke inlet pipe 12, flue gas escape pipe 3 respectively；Flue gas is by cigarette
Gas air inlet pipe 12 enters cambered surface shell 4, rotates in cambered surface shell 4, is discharged by flue gas escape pipe 3, cambered surface shell 4 is used for
Improve the heat exchange efficiency of heat exchange agent in flue gas and heat exchanger tube 13, wherein heat exchanger tube 13 runs through cambered surface shell 4.
Specifically, steam power plant's waste-heat recovery device provided by the invention passes through pump and the heat exchange agent inlet pipe 2 being connected to pump
To the heat exchange injection heat exchange agent of agent feed liquor case 1, heat exchange agent flows into heat exchanger tube 13 by heat exchange agent feed liquor case 1, at heat exchanger tube 13 and cigarette
Heat exchange occurs for gas, and heat exchange agent liquid outlet tank 6 is entered after being heated, and is discharged by 6 water conservancy diversion of heat exchange agent liquid outlet tank to heat exchange agent outlet pipe 5；
At the same time, high-temperature flue gas enters cambered surface shell 4 by smoke inlet pipe 12, and is discharged by flue gas escape pipe 3, and flue gas is in cambered surface shell
It is rotated inside body 4, is capable of increasing the contact area of flue gas Yu heat exchanger tube 13, and extended contact time, make the heat in flue gas
Amount is more transmitted in heat exchange agent, and the flue-gas temperature that flue gas escape pipe 3 is discharged is substantially reduced compared with the prior art, to mention
The heat exchange efficiency of high flue gas and 13 internal heat agent of heat exchanger tube, has the characteristics that heat exchange efficiency is high.Heat exchange agent feed liquor of the invention
Case 1 is connected with heat exchange agent liquid outlet tank 6 by heat exchanger tube 13, and one end of heat exchanger tube 13 is connected with heat exchange agent feed liquor case 1, and the other end is worn
It crosses cambered surface shell 4 to be connected with heat exchange agent liquid outlet tank 6, i.e., is surrounded by cambered surface shell 4 outside heat exchanger tube 13, further preferably, cambered surface shell
Body 4 is enclosed in the middle part of heat exchanger tube 13, and heat exchanger tube 13, which is located at the part outside cambered surface shell 4, to be general pipeline, into cambered surface shell
Generate branch again in body 4, can also for multiple branches heat exchanger tube 13 directly through cambered surface shell 4, cambered surface shell 4 respectively with flue gas
Air inlet pipe 12, flue gas escape pipe 3 be connected to, have the characteristics that it is simple for structure it is compact, manufacturing cost is cheap；Meanwhile the present invention passes through
It pumps to the heat exchange injection of agent feed liquor case 1 and changes liquor, be easy to use, also have the characteristics that using easy.
In order to extend heat-exchange time of the flue gas in cambered surface shell 4, heat exchange efficiency of the invention is improved, such as Fig. 1 and Fig. 2 institute
Showing, smoke inlet pipe 12 of the invention, flue gas escape pipe 3 are located at the two sides of cambered surface shell 4, and the two is not oppositely arranged,
So that flue gas by smoke inlet pipe 12 into cambered surface shell 4 rotate after at least through half of cambered surface shell 4 path again by
Flue gas escape pipe 3 is discharged, and is able to extend residence time of the flue gas in cambered surface shell 4, to extend flue gas and heat exchanger tube 13
Time of contact improves the heat exchange efficiency of flue gas and the agent that exchanges heat, has flue gas residence heat-exchange time long, the high feature of heat exchange efficiency.
In order to further extend heat-exchange time, heat exchange efficiency of the invention is improved, as depicted in figs. 1 and 2, cigarette of the invention
Gas air inlet pipe 12, flue gas escape pipe 3 are in being horizontally arranged, so that flue gas escape pipe 3, smoke inlet pipe 12 and 4 inner wall of cambered surface shell
It is nontangential, so that high-temperature flue gas will not directly be blown into cigarette when being rotated by smoke inlet pipe 12 into cambered surface shell 4
It inside gas escape pipe 3, is not easy directly to be discharged from flue gas escape pipe 3, to further extend heat exchange of the flue gas in cambered surface shell 4
Time improves waste heat recovery efficiency, has the characteristics that heat-exchange time is long, heat exchange efficiency is high.
In order to further increase heat exchange efficiency of the invention, efficiently using the waste heat in flue gas, as depicted in figs. 1 and 2, this
The smoke inlet pipe 12 of invention is located at the lower part of cambered surface shell 4, and flue gas escape pipe 3 is located at the top of cambered surface shell 4.High-temperature flue gas
By smoke inlet pipe 12 enter cambered surface shell 4 lower part after, by 4 lower part of cambered surface shell, along the arc inner wall of cambered surface shell 4
Rotation upwards at least exchanges heat with the heat exchange agent generation in heat exchanger tube, twice to form temperature of lower inside cambered surface shell 4
Stable state high, upper temp is slightly lower is first preheated with the heat exchange agent in the slightly lower flue gas exchange heat pipe 13 of temperature, then with temperature
Heat exchange agent heating after preheating in high flue gas exchange heat pipe 13 is reheated, is filled to realize the first preheating of flue gas exchange thermit powder
Divide using the waste heat in flue gas, improve heat exchange efficiency, has the characteristics that heat exchange efficiency is high, utilization rate of waste heat is high.
For the ease of flue gas in cambered surface shell 4 rotational flow, and the service life of cambered surface shell 4 is improved, such as Fig. 1 and figure
Shown in 2, cambered surface shell 4 of the invention is spherical shell, and spherical shell will not hinder the rotation of its inside smoke without obvious corner angle
Flowing guarantees that stablizing for 4 internal heat exchange of cambered surface shell carries out convenient for forming steady air flow.Meanwhile using without obvious corner angle
Spherical shell structure enables to 4 inside stress equalization of cambered surface shell, reduces flue gas to the corrosion inside cambered surface shell 4, improves
The service life of cambered surface shell 4 has the characteristics that the stable, long service life that exchanges heat.
In order to further increase the utilization rate of the invention to waste heat in flue gas, as depicted in figs. 1 and 2, the invention also includes
Accelerate heat-exchanger rig, heat-exchanger rig is accelerated to be mounted on cambered surface shell 4, is changed for improving flue gas with heat exchange agent in heat exchanger tube 13
The thermal efficiency.Further, accelerating heat-exchanger rig includes the influent stream pipe 7, auxiliary heat-exchanging blower 8 and outflow tube 9 being sequentially communicated；Auxiliary
The air inlet of heat exchange blower fan 8 is connected to influent stream pipe 7, and the air outlet of auxiliary heat-exchanging blower 8 is connected to outflow tube 9；Influent stream pipe 7 goes out
Flow tube 9 is simultaneously connected to cambered surface shell 4 respectively.The present invention accelerates heat-exchanger rig by installing on cambered surface shell 4, can be improved this
The utilization rate of waste heat of invention.Flue gas passes sequentially through auxiliary heat-exchanging blower 8, outflow tube 9 after entering influent stream pipe 7 by cambered surface shell 4, then
Secondary to enter cambered surface shell 4, flow of flue gas speed is promoted at this time, and can carry out heat with the heat exchange agent in heat exchanger tube 13 again
Exchange increases heat exchange number, makes full use of the waste heat in flue gas, further decreases the temperature that flue gas escape pipe 3 discharges flue gas, tool
The high feature of heat utilization efficiency of having a surplus.
In order to further extend heat-exchange time of the flue gas in cambered surface shell 4, utilization rate of waste heat of the invention is improved, is such as schemed
Shown in 1 and Fig. 2, influent stream pipe 7 of the invention is located at the top of smoke inlet pipe 12, and influent stream pipe 7 is being with 4 joint of cambered surface shell
Horizontally disposed, flue gas is by cambered surface shell 4 successively after influent stream pipe 7, auxiliary heat-exchanging blower 8, outflow tube 9 again by outflow tube 9
Into cambered surface shell 4, outflow tube 9 is located at the lower section of flue gas escape pipe 3, and outflow tube 9 is being set with 4 joint of cambered surface shell for level
It sets, entering the flue gas in cambered surface shell 4 from outflow tube 9 can be to rotating flow in cambered surface shell 4 to the flue gas of flue gas escape pipe 3
Apply shearing force, so that the flue gas of rotational flow deviates flue gas escape pipe 3 and continues in 4 internal rotating stream of cambered surface shell
It is dynamic, number of revolutions of the flue gas in cambered surface shell 4 is increased with this, to extend heat-exchange time of the flue gas in cambered surface shell 4, is had
Have the characteristics that heat-exchange time is long, utilization rate of waste heat is high.
For the ease of guiding flue gas rotational flow in cambered surface shell 4, and when extending delay of the flue gas in cambered surface shell 4
Between, as depicted in figs. 1 and 2, the invention also includes deflector 11, deflector 11 is tiltedly mounted in cambered surface shell 4, deflector 11
Quantity is preferably two, and two deflectors 11 match with smoke inlet pipe 12, flue gas escape pipe 3 respectively.One deflector 11
It positioned at the top of smoke inlet pipe 12 and 4 communication port of cambered surface shell, is tilted down along flue gas airintake direction, another deflector 11
Positioned at the lower section of flue gas escape pipe 3 and 4 communication port of cambered surface shell, tilted down along flue gas outgassing direction.Flue gas is by flue gas air inlet
When pipe 12 enters cambered surface shell 4, the deflector 11 of 12 top of smoke inlet pipe can guide flue gas along 4 inner wall of cambered surface shell under
Up rotational flow；The deflector 11 of 3 lower section of flue gas escape pipe can play flue gas escape pipe 3 and the communication port of cambered surface shell 4
To bridging effect, and flue gas can be guided along 4 internal rotating of cambered surface shell, to extend delay of the flue gas in cambered surface shell 4
Time extends heat-exchange time and improves heat exchange efficiency, so that the present invention has the characteristics that flue gas is high convenient for flowing, heat exchange efficiency.
Stablize rotation in cambered surface shell 4 for the ease of flue gas, so that the present invention steadily exchanges heat, as depicted in figs. 1 and 2,
The invention also includes diversion column 10, diversion column 10 is mounted in cambered surface shell 4, passes through bracket and cambered surface in the middle part of cambered surface shell 4
The side wall of shell 4 connects.Further preferably, the axis of diversion column 10 is overlapped with the axis of cambered surface shell 4, so that arc of the invention
Toroidal cavity is formed inside face-piece body 4, consequently facilitating flue gas rotational flow in cambered surface shell 4, so that flue gas and the agent that exchanges heat
Heat exchange is steady to be carried out, and has the characteristics that heat exchange is stable.
As depicted in figs. 1 and 2, the course of work of the invention is described in detail below:
At work, pump passes through heat exchange agent inlet pipe 2 to heat exchange agent feed liquor to steam power plant's waste-heat recovery device provided by the invention
The injection heat exchange agent of case 1, heat exchange agent flow into heat exchanger tube 13 by heat exchange agent feed liquor case 1, and heat exchange, quilt occurs with flue gas changing at liquid pipe
Heat exchange agent after heating enters heat exchange agent liquid outlet tank 6, is discharged by 6 water conservancy diversion of heat exchange agent liquid outlet tank to heat exchange agent outlet pipe 5；It is same with this
When, high-temperature flue gas is entered in cambered surface shell 4 by smoke inlet pipe 12 in the bottom level of cambered surface shell 4, in 10 He of diversion column
Along the upward rotational flow of 4 inner wall of cambered surface shell under the common guide functions of the deflector 11 of 12 top of smoke inlet pipe, flue gas exists
When flowing through flue gas escape pipe 3, under the water conservancy diversion and bridging effect of the deflector 11 below flue gas escape pipe 3, a part is through flue gas
Escape pipe 3 is discharged, and another part continues to flow in 4 internal rotating of cambered surface shell；Flue gas shunts again at influent stream pipe 7, and one
Divide and continue rotational flow, another part enters cambered surface shell 4 by outflow tube 9 again after the acceleration of auxiliary heat-exchanging blower 8, and flue gas exists
It cambered surface shell 4, smoke inlet pipe 12, flue gas escape pipe 3, influent stream pipe 7, auxiliary heat-exchanging blower 8, outflow tube 9, deflector 11 and leads
Under 10 collective effect of fluidization tower, the high efficient heat exchanging continual and steady with the heat exchange agent in heat exchanger tube 13 in cambered surface shell 4.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of steam power plant's waste-heat recovery device, including the heat exchange agent feed liquor case and heat exchange agent liquid outlet tank connected by heat exchanger tube,
It is characterized in that, further includes:
Cambered surface shell, the cambered surface shell are connected to smoke inlet pipe, flue gas escape pipe respectively；Flue gas is by the smoke inlet pipe
It into the cambered surface shell, rotates in the cambered surface shell, is discharged by the flue gas escape pipe, the cambered surface shell is used
In the heat exchange efficiency for improving flue gas and the heat exchange intraductal heat exchange agent；
Wherein, the heat exchanger tube runs through the cambered surface shell.
2. steam power plant's waste-heat recovery device according to claim 1, it is characterised in that:
The smoke inlet pipe, the flue gas escape pipe are located at the two sides of the cambered surface shell.
3. steam power plant's waste-heat recovery device according to claim 1, it is characterised in that:
The smoke inlet pipe, the flue gas escape pipe are in horizontal positioned.
4. steam power plant's waste-heat recovery device according to claim 1, it is characterised in that:
The cambered surface shell is spherical shell.
5. steam power plant's waste-heat recovery device according to claim 1, it is characterised in that:
The smoke inlet pipe is located at the lower part of the cambered surface shell, and the flue gas escape pipe is located at the upper of the cambered surface shell
Portion.
6. steam power plant's waste-heat recovery device according to claim 1, which is characterized in that further include:
Accelerate heat-exchanger rig, the acceleration heat-exchanger rig is mounted on the cambered surface shell, for improving flue gas and the heat exchange
The heat exchange efficiency of intraductal heat exchange agent.
7. steam power plant's waste-heat recovery device according to claim 6, it is characterised in that:
The acceleration heat-exchanger rig includes the influent stream pipe, auxiliary heat-exchanging blower and outflow tube being sequentially communicated；It is the influent stream pipe, described
Outflow tube is simultaneously connected to the cambered surface shell respectively.
8. steam power plant's waste-heat recovery device according to claim 7, it is characterised in that:
The influent stream pipe is located at the top of the smoke inlet pipe, and the outflow tube is located at the lower section of the flue gas escape pipe.
9. steam power plant's waste-heat recovery device according to claim 1, which is characterized in that further include:
Deflector, the deflector are tiltedly mounted in the cambered surface shell, and with the smoke inlet pipe, the flue gas outlet
Pipe matches.
10. steam power plant's waste-heat recovery device according to claim 1, which is characterized in that further include:
Diversion column, the diversion column are mounted in the cambered surface shell, in the cambered surface housing central section and the cambered surface shell phase
Even.
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| CN209101878U (en) * | 2018-09-19 | 2019-07-12 | 国电龙源电力技术工程有限责任公司 | A kind of steam power plant's waste-heat recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0078207A2 (en) * | 1981-10-22 | 1983-05-04 | Chaffoteaux & Maury | Apparatus for the recuperation of calories from flue gases of gas heaters |
| CN2427788Y (en) * | 2000-06-16 | 2001-04-25 | 温筱茜 | Wortex flow and Gas/water type heat exchanger |
| CN205482396U (en) * | 2016-03-09 | 2016-08-17 | 厦门市博维科技有限公司 | Glass bead heating device with waste heat recovery |
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