CN208688277U - The efficient Distribution utilization system of sintering mine sensible heat - Google Patents
The efficient Distribution utilization system of sintering mine sensible heat Download PDFInfo
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- CN208688277U CN208688277U CN201821271078.7U CN201821271078U CN208688277U CN 208688277 U CN208688277 U CN 208688277U CN 201821271078 U CN201821271078 U CN 201821271078U CN 208688277 U CN208688277 U CN 208688277U
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Abstract
The utility model relates to a kind of efficient Distribution utilization systems of sintering mine sensible heat.Including sintering machine, cold kiln, double discard heat boilers are erected；Air flue gas heat-exchange unit is set on the combustion-supporting air pipe line of the igniter of sintering machine, the high-temperature flue gas outlet of the cooling section of sintering machine is connect by high temperature flue gas pipeline and high temperature draught fan with air flue gas heat-exchange unit, the flue gas cover connection after the heat exchange of air flue gas heat-exchange unit above the sintering stage of exhanst gas outlet and sintering machine；The medium temperature exhanst gas outlet for erecting cold kiln top is connect by medium temperature flue gas pipeline and medium temperature circulating fan with double discard heat boilers, and setting air off gas heat exchanger on the cold air induced pipe in cold kiln bottom portion is erected；The low temperature waste gas outlet of double discard heat boilers is connect by low-temperature flue gas pipeline with air off gas heat exchanger.Sintering mine sensible heat is assigned as high-temperature flue gas, medium temperature flue gas, low-temperature flue gas and is utilized respectively by the utility model, and the sinter thermal efficiency greatly improved, and realizes the efficient Distribution utilization of sintering mine sensible heat.
Description
Technical field
The utility model relates to sinter coolings and Exposure degree technical field, specifically a kind of sintering mine sensible heat efficiently to divide
With the system of utilizing.
Background technique
Sintering process is one of steel industry primary raw material process, and energy consumption is higher.Wherein, sintering mine sensible heat recycles energy
Power is poor, and a large amount of thermal energy is caused to waste, and how sufficiently to recycle and using this part of heat energy, is major iron and steel enterprise in recent years
The project studied always.
Currently, domestic main sintering mine sensible heat recovery technology are as follows: cooling residual heat recycling, ring cold machine waste heat on sintering machine machine
Recycling, but these types is in practice process is influenced by the equipment reasons such as leak out, and waste heat recycling ability generally can only the rate of recovery
30% or so, however it remains biggish recycling space.
In recent years, it proposes that sinter erects cold kiln technology in the art, reduces equipment and leak out, can effectively improve heat
Measure the rate of recovery.As: one kind disclosed in CN201610150896.2 is cooling for sinter and sensible heat high efficiente callback utilizes system, benefit
With the sintering mine sensible heat of recycling by erecting cold kiln+steam boiler+steam turbine form power generation, the technology is in Tianjin Tian Feng steel
Put into operation use.A kind of work for erecting cold kiln recycling sinter waste heat dragging main exhauster disclosed in CN201621470172.6
Process system, You Shuleng kiln, waste heat boiler, steam turbine and main exhauster of sintering constitute complete sintering plant energy utilization technique system
System, steam turbine directly provides power to main exhauster, grid-connected without power grid, directly utilizes.But cold kiln technology is erected in sintering, still
It cannot achieve sintering mine sensible heat to recycle completely, still some sensible heat is wasted by release.
It is happened in conclusion current every sintering mine sensible heat recovery technology has sensible heat release, causes thermal energy
Waste, to further increase sintering mine sensible heat utilization rate, it is desirable to provide a kind of efficient sensible heat distribution system of sinter.
Utility model content
The technical problems to be solved in the utility model is just to provide a kind of efficient sensible heat distribution system of sinter, to greatest extent
Reduction sintering mine sensible heat waste, improve the sintering mine sensible heat rate of recovery.
The technical protection scheme that the utility model solves the use of its technical problem is:
A kind of efficient sensible heat distribution system of sinter, comprising: sintering machine erects cold kiln, double discard heat boilers；
Air flue gas heat-exchange unit, the high temperature of the cooling section of sintering machine are set on the combustion-supporting air pipe line of the igniter of sintering machine
Exhanst gas outlet is connect by high temperature flue gas pipeline and high temperature draught fan with air flue gas heat-exchange unit, the heat exchange of air flue gas heat-exchange unit
Flue gas cover connection above the sintering stage of exhanst gas outlet and sintering machine afterwards；
The medium temperature exhanst gas outlet for erecting cold kiln top passes through medium temperature flue gas pipeline and medium temperature circulating fan and double discard heat boilers
Setting air off gas heat exchanger on the cold air induced pipe in cold kiln bottom portion is erected in connection；The low temperature waste gas of double discard heat boilers goes out
Mouth is connect by low-temperature flue gas pipeline with air off gas heat exchanger.
Further, it the cooling section of sintering machine and erects feed mechanism is set between cold kiln, feed mechanism is integrally placed at closed
In vestibule, the feeding cart of feed mechanism is run in closed vestibule.
Further, electrostatic precipitator is set on high temperature flue gas pipeline.
Further, gravitational precipitator is set on medium temperature flue gas pipeline.
Further, bag filter is set on low-temperature flue gas pipeline.
The utility model by adopting the above technical scheme, compared with prior art, beneficial effect is:
(1) sintering mine sensible heat is divided by high-temperature flue gas, medium temperature flue gas, low-temperature flue gas by the application of the utility model, point
Classification application is not carried out by temperature characterisitic, improves the utilization of sintering mine sensible heat, to greatest extent except through smoke stack emission
Heat exchange after outside low temperature waste gas, utilization rate reaches 90% or more.
(2) hot-air that the high-temperature flue gas that cooling section generates generates after through heat exchange is entering igniter and coal gas
Ton pit coal gas consumption 35m3/t mine is realized in ignition after mixing.Meanwhile the high-temperature flue gas after heat exchange is former for heat-agglomerating
Material improves raw materials for sintering bed of material heat storage capacity, and improves 1% sinter yield rate.
(3) erect the medium temperature flue gas that cold kiln generates and generate steam after exchanging heat with water, by steam turbine+generator mode into
Ton mine power generation 25KWh or more is realized in row power generation.
(4) after the low-temperature flue gas and air heat-exchange that double discard heat boilers generate, this part hot-air of generation is as cooling
Wind, so that sinter is erecting residence time slightly extension in cold kiln, further realizes sinter and cooling into after erecting cold kiln
Wind sufficiently exchanges heat.Be conducive to improve subsequent steam turbine+generator mode generated energy in this way.
Detailed description of the invention
Fig. 1 is the efficient Distribution utilization system schematic of sintering mine sensible heat；
Fig. 2 is the efficient Distribution utilization system process figure of sintering mine sensible heat；
In figure: 1. igniters；2. sintering machine；201. sintering stage；202. cooling section；3. air flue gas heat-exchange unit；4. empty
Gas air-introduced machine；5. flue gas cover；6. high temperature draught fan；7. electrostatic precipitator；8. single roll crusher；9. closed vestibule；10. feeder
Structure；101. feeding cart；102. hoist engine；11. erecting cold kiln；12. gravitational precipitator；13. medium temperature circulating fan；14. pair discard
Heat boiler；15. steam pipe network；16. bag filter；17. air off gas heat exchanger；18. low temperature air-introduced machine；19. chimney；20.
High temperature utilizes part；21. medium temperature utilizes part；22. low temperature utilizes part.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, a kind of efficient sensible heat distribution system of sinter by sintering machine 2, erects cold kiln 11, double discard heat boilers 14
Three parts are constituted, and the igniter 1 of sintering machine 2 is equipped with air air-introduced machine 4, and air air-introduced machine 4 passes through combustion air piping connection point
Air flue gas heat-exchange unit 3 is arranged on combustion-supporting air pipe line for fiery device 1；The high-temperature flue gas outlet of the cooling section 202 of sintering machine 2 passes through
High temperature flue gas pipeline and high temperature draught fan 6 are connect with air flue gas heat-exchange unit 3, and electrostatic precipitator 7 is arranged on high temperature flue gas pipeline,
Exhanst gas outlet is connect with the flue gas cover 5 of 201 top of sintering stage of sintering machine 2 after the heat exchange of air flue gas heat-exchange unit 3；Sintering machine 2
Cooling section 202 and erect between cold kiln 11 setting feed mechanism 10, for reduce sinter during feeding erects cold kiln 11 with sky
Gas contact cooling, feed mechanism 10 are integrally placed in closed vestibule 9, and material-falling hopper, material-falling hopper top is arranged in the lower part of closed vestibule 9
Hoist engine 102 is arranged in the single roll crusher 8 of corresponding 202 tail end of cooling section setting, the top of closed vestibule 9, and hoist engine 102 drives
Feeding cart 101 is run in closed vestibule 9.By sealing vestibule 9 and the combination of cold kiln 11 is erected, improves the sealing of equipment,
Reduce air leakage phenomena.
The medium temperature exhanst gas outlet for erecting cold 11 top of kiln passes through medium temperature flue gas pipeline and medium temperature circulating fan 13 and double discard heat
Boiler 14 connects, and gravitational precipitator 12 is arranged on medium temperature flue gas pipeline, erects and is arranged on the cold air induced pipe of cold 11 bottom of kiln
Air off gas heat exchanger 17；The low temperature waste gas outlet of double discard heat boilers 14 passes through low-temperature flue gas pipeline and air off gas heat exchanger
17 connect, and bag filter 16 is arranged on low-temperature flue gas pipeline.
In conjunction with Fig. 2, the sensible heat distribution method of this efficient sensible heat distribution system of sinter, including high temperature using part 20,
Medium temperature utilizes part 22 using part 21, low temperature, is specifically described below:
High temperature utilizes part 20: raw materials for sintering enters sintering machine 2 by 1 heat-agglomerating raw material of igniter, and sintering machine 2 is set
There are sintering stage 201 and cooling section 202, the raw materials for sintering after heating is in heat storage state temperature during by sintering stage 201
It is to rise, until raw materials for sintering to 201 tail of sintering stage completes sintering process, formation sinter, sinter temperature reaches at this time
Highest (generally at 750 DEG C~700 DEG C), then sinter enters cooling section 202, and sinter is cold in the progress high temperature of cooling section 202
But, sintering deposit raw material temperature is cooled to 600 DEG C by 750 DEG C~700 DEG C, the high-temperature flue gas that cooling section 202 generates enters electrostatic
High-temperature flue gas air flue gas heat-exchange unit 3 is introduced by high temperature draught fan 6 again after 7 dedusting of deduster to exchange heat with air,
In, the air after heating is mixed into igniter 1 with coal gas and lights a fire, and the flue gas after heat exchange is transported to sintering stage 201
Part normal temperature air is substituted above raw materials for sintering charge level.
Medium temperature utilizes part 21: being cooled to 600 DEG C of sinter and passes through feed mechanism 10 after single roll crusher 8 is broken
Feeding erects cold kiln 11, and sufficiently exchanges heat with low temperature air-introduced machine 18 from the cooling wind progress confined space that cold 11 bottom of kiln blasts is erected,
After heat exchange, cooling sinter, which is discharged, erects cold kiln 11 as finished product sinter, while generating in 450 DEG C~400 DEG C
Warm flue gas, 450 DEG C~400 DEG C of medium temperature flue gas can enter 12 dedusting of gravitational precipitator and be introduced by medium temperature circulating fan 13 double
Discard heat boiler 14 continues to exchange heat, and obtains the steam of two kinds of different pressures temperature: middle pressure steam (400 by exchanging heat with water
DEG C, 2.0Mpa), low-pressure steam (160 DEG C, 0.4Mpa), both steam enter steam pipe network 15 and are used to generate electricity use.
Low temperature utilizes part 22: medium temperature flue gas can enter 12 dedusting of gravitational precipitator and be introduced by medium temperature circulating fan 13
Double discard heat boilers 14 continue to exchange heat, and can generate low temperature waste gas (150 DEG C of left sides while exchanging heat with water and obtaining hot steam
It is right).After the low-temperature flue gas of generation is exchanged heat after 16 dedusting of bag filter by air off gas heat exchanger 17, the air of heating
Low temperature air-introduced machine 18 can be entered, the air after the heating of this part can erect cold kiln 11 as cooling wind entrance and exchange heat.After heat exchange
Low temperature waste gas discharged by chimney 19.
The foregoing is merely specific embodiment of the utility model, but the protection of the utility model is without being limited thereto, Ren Heben
Those skilled in the art the thinkable variation or substitution being equal with the technical program technical characteristic, all cover in this reality
Within novel protection scope.
Claims (5)
1. a kind of efficient Distribution utilization system of sintering mine sensible heat, comprising: sintering machine (2) erects cold kiln (11), double discard heat boilers
(14)；It is characterized by:
Air flue gas heat-exchange unit (3) are set on the combustion-supporting air pipe line of the igniter (1) of sintering machine (2), the cooling of sintering machine (2)
The high-temperature flue gas outlet of section (202) is connect by high temperature flue gas pipeline and high temperature draught fan (6) with air flue gas heat-exchange unit (3),
Exhanst gas outlet is connect with the flue gas cover (5) above the sintering stage (201) of sintering machine (2) after the heat exchange of air flue gas heat-exchange unit (3)；
The medium temperature exhanst gas outlet for erecting cold kiln (11) top passes through medium temperature flue gas pipeline and medium temperature circulating fan (13) and double discard heat
Setting air off gas heat exchanger (17) on the cold air induced pipe of cold kiln (11) bottom is erected in boiler (14) connection；Double discard heat
The low temperature waste gas outlet of boiler (14) is connect by low-temperature flue gas pipeline with air off gas heat exchanger (17).
2. the efficient Distribution utilization system of sintering mine sensible heat according to claim 1, it is characterised in that: the cooling of sintering machine (2)
Section (202) and setting feed mechanism (10) being erected between cold kiln (11), it is interior that feed mechanism (10) is integrally placed at closed vestibule (9), on
Expect feeding cart (101) operation in closed vestibule (9) of mechanism (10).
3. the efficient Distribution utilization system of sintering mine sensible heat according to claim 1, it is characterised in that: set on high temperature flue gas pipeline
Set electrostatic precipitator (7).
4. the efficient Distribution utilization system of sintering mine sensible heat according to claim 1, it is characterised in that: set on medium temperature flue gas pipeline
Set gravitational precipitator (12).
5. the efficient Distribution utilization system of sintering mine sensible heat according to claim 1, it is characterised in that: set on low-temperature flue gas pipeline
Set bag filter (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821271078.7U CN208688277U (en) | 2018-08-08 | 2018-08-08 | The efficient Distribution utilization system of sintering mine sensible heat |
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| CN201821271078.7U CN208688277U (en) | 2018-08-08 | 2018-08-08 | The efficient Distribution utilization system of sintering mine sensible heat |
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| CN208688277U true CN208688277U (en) | 2019-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680040A (en) * | 2018-08-08 | 2018-10-19 | 唐山瑞丰钢铁（集团）有限公司 | The efficient Distribution utilization system of sintering mine sensible heat and distribution method |
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2018
- 2018-08-08 CN CN201821271078.7U patent/CN208688277U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680040A (en) * | 2018-08-08 | 2018-10-19 | 唐山瑞丰钢铁（集团）有限公司 | The efficient Distribution utilization system of sintering mine sensible heat and distribution method |
| CN108680040B (en) * | 2018-08-08 | 2023-12-22 | 唐山瑞丰钢铁（集团）有限公司 | System and method for efficiently distributing and utilizing sensible heat of sinter |
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