CN106196145A - A kind of large-scale negative-pressure heating furnace air preheater and method - Google Patents
A kind of large-scale negative-pressure heating furnace air preheater and method Download PDFInfo
- Publication number
- CN106196145A CN106196145A CN201610490716.3A CN201610490716A CN106196145A CN 106196145 A CN106196145 A CN 106196145A CN 201610490716 A CN201610490716 A CN 201610490716A CN 106196145 A CN106196145 A CN 106196145A
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- pipeline
- heating furnace
- preheating device
- lime set
- preheater
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 53
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 49
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 49
- 239000004571 lime Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000002485 combustion reaction Methods 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002918 waste heat Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011143 downstream manufacturing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- -1 low-pressure steam Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The present invention relates to a kind of large-scale negative-pressure heating furnace air preheater and method, including flash tank, centrifugal pump, temperature reducing system, preheating device and return water system, flash tank is connected with centrifugal pump, temperature reducing system, flow controller, preheating device and return water system successively by pipeline, being filled with saturated lime set in flash tank, saturated lime set is sent after flowing through centrifugal pump, temperature reducing system, preheating device and return water system successively and carries out next step utilization；Preheating device can arrange many groups, and many group preheating devices are connected in parallel between temperature reducing system and return water system by pipeline.The technical scheme that the present invention provides effectively solves preheating device assignment of traffic problem, and the design of attemperator ensure that system traveling comfort, the design of enhanced heat exchange measure improve energy-saving efficiency, reduce production cost.
Description
Technical field
The present invention relates to a kind of utilization add the waste heat of thermal medium and carry out the energy conserving system of air preheat, it is intended to improve combustion-supporting sky
Gas charging temperature, reduce fuel consumption, save production cost, particularly relate to a kind of large-scale negative-pressure heating furnace air preheater and
Method.
Background technology
In each department industrial, the waste heats such as substantial amounts of condensed fluid, low-pressure steam, flue gas are had all not obtain effectively
Utilization, cause the serious waste of the energy, therefore, developing effective waste-heat recovery device is that the energy is able to the effective of Appropriate application
Mode.
Low-grade property and the universality of existence due to waste heat, it is desirable to residual neat recovering system possess following some: 1, can be
Transmitting big heat flow under little heat transfer temperature and pressure, heat recovery rate is high；
2, the resistance of energy conserving system own is little, does not affect negative pressure stove air intake；
3, simple in construction, compact, economic；
4, energy conserving system is safeguarded simple, it is not necessary to additionally increase energy consumption equipment；
5, in the stove group of negative pressure stove, single furnace heat load is each different, and the condensate flow of corresponding pairing preheating device controls
Should be accurate.
6, producing water hammer due to pressure drop during lime set distance is transported, it is flat that safety in production requires that energy conserving system runs
Surely.
Not yet there is the heating furnace air preheating system meeting above-mentioned needs, to this end, invention one meets above-mentioned technology at present
The large-scale negative-pressure heating furnace air preheater required just seems urgent and necessity.
Summary of the invention
The technical problem to be solved be to provide a kind of utilize the waste heat of plant area's condensed fluid to heat combustion air,
Reasonable energy utilization, reduces the large-scale negative-pressure heating furnace air preheater of fuel consumption, it is a further object of the present invention to provide
A kind of utilize this device realize utilize the waste heat of plant area's condensed fluid to the method heating combustion air.
The technical scheme is that a kind of large-scale negative-pressure heating furnace air preheater,
Including flash tank, centrifugal pump, temperature reducing system, preheating device and return water system, described flash tank by pipeline successively with centrifugal pump,
Temperature reducing system, preheating device are connected with return water system, are filled with saturated lime set in described flash tank, and described saturated lime set is successively
It is admitted to downstream processing units after flowing through centrifugal pump, temperature reducing system, preheating device and return water system；Described preheating device can be arranged
Many groups, the described preheating device of many groups is connected in parallel between temperature reducing system and return water system by pipeline.
The invention has the beneficial effects as follows: the technical scheme that the present invention provides effectively solves preheating device assignment of traffic and asks
Topic；The design of temperature reducing system avoids the Water hammer of pipeline that lime set flash distillation causes, it is ensured that it is steady that system is run；Strengthening is changed
The design of hot measure improves energy-saving efficiency, reduces production cost.
On the basis of technique scheme, the present invention can also do and improve as follows:
Further, described preheating device includes flow controller and the preheater being cascaded by pipeline, described stream
Amount controller is positioned at the upstream position of saturated lime set flow direction, and described preheating device is positioned at the downstream of saturated lime set flow direction
Position.
Further, described temperature reducing system include attemperator, desuperheating water transfer pipeline, regulation valve, temperature sensor, described in subtract
Temperature device is arranged on the pipeline between centrifugal pump and preheating device, and described attemperator is circumscribed with desuperheating water, described tune by pipeline
Joint valve is arranged on the pipeline of conveying desuperheating water, and the pipeline between described attemperator and preheating device is provided with temperature sensor,
Described temperature sensor is connected by circuit with regulation valve.
Further, described preheater is fin-tube heat exchanger or heat-pipe heat exchanger.
Further, described preheater is fin-tube heat exchanger, leads to for saturated lime set in described fin-tube heat exchanger
The heat exchange pipe external surface crossed is provided with compound aluminum fin, and described heat exchanger tube inner homogeneous is provided with multiple spoiler.
Further, rack-mount bottom described preheater, described preheating device top connects with the one end in the first air channel
Connecing and connect, the other end in described first air channel is connected with heating furnace by pipeline；It is provided with standby on described first air channel
Air port.
Further, described preheater is heat-pipe heat exchanger, the passage passed through for air of described heat-pipe heat exchanger
Using fin structure, its heat pipe passed through for saturated lime set uses light-pipe structure.
Further, the air side air outlet of described preheating device and the one end in the second air channel connect and connection, and described second
The other end in air channel is connected with heating furnace by pipeline.
Further, described flash drum overhead is provided with steam (vapor) outlet, and described steam outlet is provided with stop valve, described flash distillation
Tank top is provided with the charging aperture for adding saturated lime set, is provided with the discharging opening for exporting saturated lime set bottom it, described in go out
Being provided with one end of pipeline outside material mouth, this pipeline other end is connected with the input port of centrifugal pump.
A kind of large-scale negative-pressure heating furnace air preheat method, is realized by large-scale negative-pressure heating furnace air preheater, tool
Body method step is as follows:
1) the saturated lime set that plant area produces being introduced flash tank, in flash tank, saturated vapor escapes, saturated in tank body
Lime set is entered in centrifugal pump by pipeline and carries out supercharging；
2) step 1) in obtain supercharging after saturated lime set entered in temperature reducing system by pipeline and carry out desuperheat process；
3) step 2) in the desuperheat that obtains process after saturated lime set regulate by flow controller after entrance preheating device
Heat exchange is carried out with combustion air；
4) step 3) in saturated lime set after the heat exchange process that obtains enter return water system, be finally used as downstream and use
On the way；The combustion air carrying out heat exchange enters in heating furnace.
Use technique scheme to provide the benefit that system have employed enhanced heat exchange finned tube, in pipe, be provided with flow-disturbing
Sheet, heat exchange efficiency is high, takes full advantage of medium waste heat；The loss due to pressure during long-distance sand transport of saturated lime set can be produced
Raw a certain amount of steam, thus produce noise, vibrations, air pocket etc. adverse effect.Temperature reducing system is adjusted by temperature feedback control
The aperture of joint valve, it is ensured that the temperature of saturated lime set fluctuates within the specific limits, it is to avoid produce steam in pipeline, eliminate pipeline
The adverse effect that water attack brings, thus ensure that lime set stability of system during long-distance sand transport；System is at pre-hot charging
Put water inlet and devise flow control element, it is ensured that every preheating device assignment of traffic is reasonable；Whole system does not consume volume
Outer electric energy, stable, safe and reliable, safeguard simple.
Accompanying drawing explanation
Fig. 1 is the system flow chart of the present invention；
Fig. 2 is preheating device and air channel structure schematic diagram in the first embodiment of the present invention；
Fig. 3 is I region partial enlarged drawing in Fig. 2；
Fig. 4 is preheating device and air channel structure schematic diagram in the second embodiment of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, saturated lime set, 2, saturated vapor, 3, flash tank, 3-1, charging aperture, 3-2, steam (vapor) outlet, 4, centrifugal pump, 5, subtract
Temperature system, 6, flow controller, 7, preheater, 8, attemperator, 9, regulation valve, 10, desuperheating water, 11, return water system, 12, air channel,
13, standby air port, 14, preheating device body, 15, support, 16, compound aluminum fin, 17, spoiler, the 18, second wind
Road, 19, preheating device housing, 20, heat pipe, 21, temperature sensor；
In figure, K represents air-flow direction.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
Non-for limiting the scope of the present invention.
As shown in Figures 1 to 4, a kind of large-scale negative-pressure heating furnace air preheater, including flash tank 3, centrifugal pump 4, desuperheat
System 5, preheating device and return water system 11, described flash tank 3 by pipeline successively with centrifugal pump 4, temperature reducing system 5, pre-hot charging
Putting and be connected with return water system 11, be filled with saturated lime set 1 in described flash tank 3, described saturated lime set 1 flows through centrifugal pump successively
4, it is admitted to downstream processing units after temperature reducing system 5, preheating device and return water system 11.Described flash tank 3 top is provided with steam
Outlet 3-2, is provided with stop valve at described steam (vapor) outlet 3-2.
Described flash tank 3 top is provided with the charging aperture 3-1 for adding saturated lime set, is provided with for exporting saturated bottom it
The discharging opening of lime set 1, is provided with one end of pipeline outside described discharging opening, this pipeline other end is connected with the input port of centrifugal pump 4
Connect.
Described preheating device includes flow controller 6 and the preheater 7 being cascaded by pipeline, described flow-control
Device 6 is positioned at the upstream position of saturated lime set 1 flow direction, and described preheater 7 is positioned at the downstream bits of saturated lime set 1 flow direction
Put.
Described temperature reducing system 5 includes attemperator 8, desuperheating water 10, regulation valve 9, temperature sensor, and described attemperator 8 is arranged
On pipeline between centrifugal pump 4 and preheating device, described attemperator 8 is circumscribed with desuperheating water 10, described regulation valve 9 by pipeline
It is arranged on the pipeline of conveying desuperheating water 10, the pipeline between described attemperator 8 and preheating device is provided with temperature sensor
21, described temperature sensor 21 is connected by circuit with regulation valve 9.
As shown in Figures 2 and 3, described preheater 7 is fin-tube heat exchanger.Described fin-tube heat exchanger is used for satisfying
The heat exchange pipe external surface passed through with lime set 1 is provided with compound aluminum fin 16, and described heat exchanger tube inner homogeneous is provided with multiple disturbing
Flow 17.
Being arranged on support 15 bottom described preheater 7, described support 15 is installed in the plane, described preheater 7 top
Being connected with the one end in the first air channel 12 and connect, the other end in described first air channel 12 is connected with heating furnace by pipeline；Institute
State and standby air port 13 is installed on first air channel 12.
As shown in Figure 4, the second embodiment of the present invention is with the difference of the first embodiment, described preheater
7 is heat-pipe heat exchanger.The passage employing fin structure passed through for air of described heat-pipe heat exchanger, it is for saturated solidifying
The heat pipe 20 that liquid passes through uses light-pipe structure.The one end in the air side air outlet of described preheater 7 and the second air channel 18 connect and
Connection, the other end in described second air channel 18 is connected with heating furnace by pipeline；The air side air inlet peace of described preheater 7
Equipped with aerator.Described preheating device can arrange many groups, and the described preheating device of many groups is connected in parallel on temperature reducing system 5 by pipeline and returns
Between water system 11.
A kind of large-scale negative-pressure heating furnace air preheat method, is realized by large-scale negative-pressure heating furnace air preheater, tool
Body method step is as follows:
1) the saturated lime set 1 that plant area produces being introduced flash tank 3, in flash tank 3, saturated vapor 2 escapes, in tank body 3
Saturated lime set 1 entered in centrifugal pump 4 by pipeline and carry out supercharging；
2) step 1) in obtain supercharging after saturated lime set 1 entered in temperature reducing system 5 by pipeline and carry out desuperheat process；
3) step 2) in the desuperheat that obtains process after saturated lime set 1 regulated by flow controller 6 after enter preheating dress
Put and carry out heat exchange with combustion air；
4) step 3) in saturated lime set 1 after the heat exchange process that obtains enter return water system 11, be finally used as downstream
Purposes；The combustion air carrying out heat exchange enters in heating furnace.
The operation principle of the present invention and work process: saturated for plant area lime set 1 is introduced flash tank 3 by charging aperture 3-1,
In flash tank 3, saturated vapor 2 escapes from steam (vapor) outlet 3-2, and the saturated lime set in tank body 3 is through centrifugal pump 4 supercharging；Centrifugal pump 4
Saturated lime set after pressurization, through temperature reducing system 5 desuperheat, then enters preheater 7 by flow controller 6 regulation；After desuperheat
Saturated lime set 1 carries out heat exchange with combustion air in air preheater 7, and combustion air passes through the first air channel 12 after heating
Or the second air channel 18 enters in heating furnace；The saturated lime set 1 lowered the temperature enters return water system 11, is finally used as other and uses
On the way.
In sum, the technical scheme that the present invention provides effectively solves preheating device assignment of traffic problem, attemperator
Design ensure that system traveling comfort, the design of enhanced heat exchange measure improve energy-saving efficiency, reduce production cost.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. one kind large-scale negative-pressure heating furnace air preheater, it is characterised in that include flash tank (3), centrifugal pump (4), desuperheat
System (5), preheating device and return water system (11), described flash tank (3) by pipeline successively with centrifugal pump (4), temperature reducing system
(5), preheating device be connected with return water system (11), be filled with saturated lime set (1) in described flash tank (3), described saturated solidifying
Liquid (1) is sent entrance downstream and processes after flowing through centrifugal pump (4), temperature reducing system (5), preheating device and return water system (11) successively
Device；Described preheating device can arrange many groups, and the described preheating device of many groups is connected in parallel on temperature reducing system (5) and backwater system by pipeline
Between system (11).
A kind of large-scale negative-pressure heating furnace air preheater, it is characterised in that described preheating device
Including the flow controller (6) being cascaded by pipeline and preheater (7), described flow controller (6) is positioned at saturated solidifying
The upstream position of liquid (1) flow direction, described preheater (7) is positioned at the downstream position of saturated lime set (1) flow direction.
A kind of large-scale negative-pressure heating furnace air preheater, it is characterised in that described temperature reducing system
(5) including attemperator (8), desuperheating water (10), regulation valve (9), temperature sensor (21), described attemperator (8) is arranged on centrifugal
On pipeline between pump (4) and preheating device, described attemperator (8) is circumscribed with desuperheating water (10), described regulation valve by pipeline
(9) being arranged on the pipeline of conveying desuperheating water (10), the pipeline between described attemperator (8) and preheating device is provided with temperature and passes
Sensor (21), described temperature sensor (21) is connected by circuit with regulation valve (9).
A kind of large-scale negative-pressure heating furnace air preheater, it is characterised in that described preheater
(7) it is fin-tube heat exchanger or heat-pipe heat exchanger.
A kind of large-scale negative-pressure heating furnace air preheater, it is characterised in that described preheater
(7) being fin-tube heat exchanger, the heat exchange pipe external surface passed through for saturated lime set (1) in described fin-tube heat exchanger is provided with
Compound aluminum fin (16), described heat exchanger tube inner homogeneous is provided with multiple spoiler (17).
A kind of large-scale negative-pressure heating furnace air preheater, it is characterised in that described preheater
(7) bottom is arranged on support (15), and described preheating device (7) top is connected with the one end of the first air channel (12) and connects, institute
The other end stating the first air channel (12) is connected with heating furnace by pipeline；On described first air channel (12), standby air port is installed
(13)。
A kind of large-scale negative-pressure heating furnace air preheater, it is characterised in that described preheater
(7) being heat-pipe heat exchanger, the passage employing fin structure passed through for air of described heat-pipe heat exchanger, it is for saturated
The heat pipe (20) that lime set (1) is passed through uses light-pipe structure.
A kind of large-scale negative-pressure heating furnace air preheater, it is characterised in that described preheating device
(7) air side air outlet and the one end of the second air channel (18) connect and connect, and the other end of described second air channel (18) passes through
Pipeline is connected with heating furnace.
9. according to large-scale negative-pressure heating furnace air preheater a kind of described in any one of claim 1 to 8, it is characterised in that institute
Stating flash tank (3) top and be provided with steam (vapor) outlet (3-2), described steam (vapor) outlet (3-2) place is provided with stop valve, described flash tank
(3) top is provided with the charging aperture (3-1) for adding saturated lime set (1), and its sidewall is provided with for exporting going out of saturated lime set (1)
Material mouth, described discharging opening is circumscribed with one end of pipeline, and this pipeline other end is connected with the input port of centrifugal pump (4).
10. one kind large-scale negative-pressure heating furnace air preheat method, it is characterised in that by as described in any one of claim 1 to 9
One large-scale negative-pressure heating furnace air preheater realize, comprise the following steps:
1) the saturated lime set (1) that plant area produces being introduced flash tank (3), in flash tank (3), saturated vapor (2) escapes, tank body
(3) the saturated lime set (1) in is entered in centrifugal pump (4) by pipeline and carries out supercharging；
2) step 1) in saturated lime set (1) after the supercharging that obtains entered in temperature reducing system (5) by pipeline and carry out desuperheat process；
3) step 2) in the desuperheat that obtains process after saturated lime set (1) regulated by flow controller (6) after enter preheating dress
Put and carry out heat exchange with combustion air；
4) step 3) in saturated lime set (1) after the heat exchange process that obtains enter return water system (11), be finally used as downstream
Purposes；The combustion air carrying out heat exchange enters in heating furnace.
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| CN201610490716.3A CN106196145B (en) | 2016-06-28 | 2016-06-28 | A kind of large size negative-pressure heating furnace air preheating system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665413A (en) * | 2021-01-19 | 2021-04-16 | 盘锦锦阳化工有限公司 | Raw material preheating system |
| CN114993091A (en) * | 2022-05-18 | 2022-09-02 | 北京航化节能环保技术有限公司 | Zero-power-consumption self-adaptive distributed waste heat recycling system of ethylene device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114993091A (en) * | 2022-05-18 | 2022-09-02 | 北京航化节能环保技术有限公司 | Zero-power-consumption self-adaptive distributed waste heat recycling system of ethylene device |
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| Publication number | Publication date |
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| CN106196145B (en) | 2018-09-25 |
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