CN202947489U - Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine - Google Patents
Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine Download PDFInfo
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- CN202947489U CN202947489U CN2012200448851U CN201220044885U CN202947489U CN 202947489 U CN202947489 U CN 202947489U CN 2012200448851 U CN2012200448851 U CN 2012200448851U CN 201220044885 U CN201220044885 U CN 201220044885U CN 202947489 U CN202947489 U CN 202947489U
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses a waste-heat cascaded utilization system at low-temperature sections of a sintering circular cooling machine. The waste-heat cascaded utilization system comprises the low-temperature sections of the circular cooling machine, a circular fan and a waste heat boiler, wherein hot waste gases at the low-temperature sections of the circular cooling machine are introduced into a low-temperature part of the waste heat boiler or an air outlet pipe of the waste heat boiler by a pipeline and a valve, so the phenomenon of cold air supplying of the circular cooling machine is avoided, and the air temperature at the first section and the second section of the circular cooling machine is increased, so that the temperature of the hot waste gas generated by the first section and the second section of the circular cooling machine is increased, high-quality steam is generated by the waste heat boiler, and the power generating efficiency of waste heat is improved. The waste-heat cascaded utilization system has the advantages that the energy utilization efficiency of a sintering process is improved, the energy consumption of the sintering process is reduced and the social resources are saved. The waste-heat cascaded utilization system is applicable to a waste heat recovery system of a sintering machine with the area thereof being more than 360m<2>.
Description
Technical field
The utility model relates to the sintering process waste heat and efficiently utilizes the field, is specifically related to a kind of method and equipment thereof of the exhaust heat stepped utilization of sintering circular-cooler low-temperature zone of sintering process.
Background technology
At present, in steel manufacture process, the energy consumption of sintering circuit accounts for 12% of total energy consumption, is only second to Iron-smelting, occupies second.In the sintering circuit total energy consumption, the hot waste gas of sintering circular-cooler has nearly 36% heat energy, mainly use at present one section and the heat energy of two sections of central cooler, next life producing steam, and the waste gas of the 3rd section and the 4th section, be about 200～300 degree because temperature is low, this part heat energy fails to be fully used, and this part heat energy accounts for 10%～14% of sintering circuit total energy consumption.Sintering waste heat generating system, because the bellows of central cooler leak out seriously, the necessary significant air intake greater than waste heat boiler of the air-out of circulating fan, usually need to mend wind, now benefit wind be cold wind, the serious flue-gas temperature that reduces by a section and two sections has reduced the Boiler Steam parameter, thereby has reduced generating efficiency.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the problem that the utility model provides a kind of waste heat that can solve above-mentioned sintering circuit to fail to take full advantage of and afterheat generating system is mended cold wind is efficiently utilized sintering waste heat, reduces the energy consumption of sintering process.
Technical scheme: for solving the problems of the technologies described above, the Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine of a kind of sintering process of the present utility model, comprise central cooler low-temperature zone, circulating fan, waste heat boiler, and central cooler low-temperature zone petticoat pipe the hot waste gas pipeline and the valve that are connected with waste heat boiler low-temperature zone or wind pipe.
In the utility model, in the central cooler low-temperature zone, be generally the 4th section of the 3rd section of central cooler and central cooler by the dress petticoat pipe, and from the petticoat pipe introduction pipe, be connected with the low-temperature zone of waste heat boiler or the discharge pipe of waste heat boiler (blast pipe of circulating fan), and be used for regulating the valve of hot waste gas flow by dress on this pipeline.By these pipelines and valve, with central cooler low-temperature zone hot waste gas, introduce waste heat boiler low temperature part or circulating fan blast pipe, improve output and the circulating fan outlet temperature of low-pressure steam, and the temperature of one section of raising central cooler and two sections high temperature hot waste gas of central cooler, and then temperature and the output of raising main steam, improve the cogeneration amount.
Specifically, between the petticoat pipe and waste heat boiler low-temperature zone of central cooler low-temperature zone, establish connection house steward and valve, the hot waste gas of central cooler low-temperature zone is introduced the low temperature part of waste heat boiler.
Described central cooler low-temperature zone is four sections of three sections of central coolers and central coolers, and establishes petticoat pipe thereon, is used for collecting the hot waste gas of three sections of central coolers and four sections.
Described petticoat pipe three sections of central coolers connects valve and connecting pipe with being connected to establish between house steward, collected hot waste gas is sent into connect house steward.
Institute's art connect valve and connecting pipe at the petticoat pipe of four sections of central coolers with being connected to establish between house steward, collected hot waste gas sent into connected house steward.
Described waste heat boiler is established superheater, evaporimeter, middle pressure economizer, low-pressure superheater, low pressure evaporator, low-pressure coal saver.
Described at waste heat boiler evaporimeter and middle pressure economizer between establish air inlet 1, establish connecting pipe and valve at air inlet 1 between house steward with being connected, the 3rd section of central cooler and the 4th section hot waste gas are introduced between evaporimeter and middle pressure economizer, carried the exchange capability of heat of high pressure economizer, low-pressure superheater, low pressure evaporator, low-pressure coal saver.
Described at waste heat boiler middle pressure economizer and low-pressure superheater between establish air inlet 2, establish connecting pipe and valve at air inlet 2 between house steward with being connected, to press between economizer and low-pressure superheater in the 3rd section of central cooler and the 4th section hot waste gas introducing, improve the exchange capability of heat of low-pressure superheater, low pressure evaporator, low-pressure coal saver, improve the leaving air temp of circulating fan, thereby carry the heatrejection that enters waste heat boiler of a section and two sections, improve output and the steam parameter of main steam.
Described at waste heat boiler low-pressure superheater and low pressure evaporator between establish air inlet 3, establish connecting pipe and valve at air inlet 3 between house steward with being connected, the 3rd section of central cooler and the 4th section hot waste gas are introduced between low-pressure superheater and low pressure evaporator, improve the exchange capability of heat of low pressure evaporator, low-pressure coal saver, improve the leaving air temp of circulating fan, thereby carry the heatrejection that enters waste heat boiler of a section and two sections, improve output and the steam parameter of main steam.
Described at waste heat boiler low pressure evaporator and low-pressure coal saver between establish air inlet 4, establish connecting pipe and valve at air inlet 4 between house steward with being connected, the 3rd section of central cooler and the 4th section hot waste gas are introduced between low pressure evaporator and low-pressure coal saver, improve the exchange capability of heat of low-pressure coal saver, improve the leaving air temp of circulating fan, thereby carry the heatrejection that enters waste heat boiler of a section and two sections, improve output and the steam parameter of main steam.
Described wind pipe at waste heat boiler is established connecting pipe and valve with being connected between house steward, improve the leaving air temp of circulating fan, thereby improve the heatrejection that enters waste heat boiler of two sections of one section of central cooler and central coolers, improve output and the steam parameter of main steam.
Described waste heat boiler is preferably two pressure waste heat boilers, and two pressure waste heat boilers are the hot waste gas heat energy of cascade utilization central cooler low-temperature zone fully.
Beneficial effect: the Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine of a kind of sintering process of the present utility model has the following advantages:
1, reclaim the central cooler low-temperature zone hot waste gas that is discharged, carry out cascade utilization, improve low-pressure steam output.
2, stopped because circular cooler leaks out, must mend the cold wind problem, improved the circulating fan leaving air temp, has improved the heatrejection of a section and two sections, improved main steam quality and the output of waste heat boiler, raising residual heat system generating efficiency.
In a word, the Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine of a kind of sintering process of the present utility model has improved the utilization ratio of sintering process waste heat.The utility model is applicable to 360m
2Above sintering machine.
Description of drawings
Accompanying drawing is a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine schematic diagram of the present utility model;
1, circulating fan 2, connection house steward 3, two section 4 of central cooler, three section 5 of central cooler, four section 6 of central cooler, central cooler discharging opening 7, central cooler charging aperture 8, one section 9 of central cooler, waste heat boiler 10, superheater 11, evaporimeter 12, middle pressure economizer 13, low-pressure superheater, 14, low pressure evaporator 15, low-pressure coal saver 16, waste heat boiler discharge pipe
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in drawings, the Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine of a kind of sintering process of the present utility model, mainly comprise central cooler low-temperature zone, circulating fan (1), waste heat boiler (9), press the dress petticoat pipe in the central cooler low-temperature zone, between the petticoat pipe and waste heat boiler (9) of central cooler low-temperature zone, connect house steward (2) and valve by load;
Described central cooler low-temperature zone is central cooler three sections (4) and four sections of central coolers (5).
The petticoat pipe of central cooler the 3rd section (4) be connected between house steward (2) by dress valve and connecting pipe.
Connect valve and connecting pipe at the petticoat pipe of central cooler four sections (5) with being connected to establish between house steward (2).
Waste heat boiler (9) is inner by dress superheater (10), evaporimeter (11), middle pressure economizer (12), low-pressure superheater (13), low pressure evaporator (14), low-pressure coal saver (15).
Preferably between the evaporimeter (11) of waste heat boiler (9) and middle pressure economizer (12) by putting into air port 1, fill connecting pipe and valve at air inlet 1 with being connected to press between house steward (2).
Preferably establish air inlet 2 between the middle pressure economizer (12) of waste heat boiler (9) and low-pressure superheater (13), air inlet 2 be connected between house steward (2) by dress connecting pipe and valve.
Preferably establish air inlet 3 between the low-pressure superheater (13) of waste heat boiler (9) and low pressure evaporator (14), air inlet 3 be connected between house steward (2) by dress connecting pipe and valve.
Preferably establish air inlet 4 between the low pressure evaporator (14) of waste heat boiler (9) and low-pressure coal saver (15), air inlet 4 be connected between house steward (2) by dress connecting pipe and valve.
Preferably establish connecting pipe and valve at the wind pipe (16) of waste heat boiler (9) with being connected between house steward (2).
Waste heat boiler (9) is preferably two pressure waste heat boilers (9).
The above content of implementing can be implemented separately, also can make up enforcement.
Above content is combined, be the residual neat recovering system schematic diagram that the utility model applies to sintering process, as shown in drawings.
The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (11)
1. Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine, comprise central cooler low-temperature zone, circulating fan (1), waste heat boiler (9), it is characterized in that: between the petticoat pipe and waste heat boiler (9) of central cooler low-temperature zone, establish connection house steward (2) and valve.
2. a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine according to claim 1, it is characterized in that: described central cooler low-temperature zone is central cooler three sections (4) and four sections of central coolers (5).
3. a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine according to claim 1 is characterized in that: described petticoat pipe at central cooler three sections (4) connects valve and connecting pipe with being connected to establish between house steward (2).
4. a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine according to claim 1 is characterized in that: described petticoat pipe at central cooler four sections (5) connects valve and connecting pipe with being connected to establish between house steward (2).
5. a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine according to claim 1, it is characterized in that: described waste heat boiler (9) is established superheater (10), evaporimeter (11), middle pressure economizer (12), low-pressure superheater (13) low pressure evaporator (14), low-pressure coal saver (15).
6. according to claim 1 or a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine claimed in claim 5, it is characterized in that: establish air inlet 1 between described evaporimeter in waste heat boiler (9) (11) and middle pressure economizer (12), establish connecting pipe and valve at air inlet 1 with being connected between house steward (2).
7. according to claim 1 or a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine claimed in claim 5, it is characterized in that: described at waste heat boiler (9) middle pressure economizer (12) and low-pressure superheater (13) between establish air inlet 2, establish connecting pipe and valve at air inlet 2 with being connected between house steward (2).
8. according to claim 1 or a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine claimed in claim 5, it is characterized in that: establish air inlet 3 between described low-pressure superheater in waste heat boiler (9) (13) and low pressure evaporator (14), establish connecting pipe and valve at air inlet 3 with being connected between house steward (2).
9. according to claim 1 or a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine claimed in claim 5, it is characterized in that: establish air inlet 4 between described low pressure evaporator in waste heat boiler (9) (14) and low-pressure coal saver (15), establish connecting pipe and valve at air inlet 4 with being connected between house steward (2).
10. a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine according to claim 1 is characterized in that: described wind pipe in waste heat boiler (9) (16) is established connecting pipe and valve with being connected between house steward (2).
11. a kind of Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine according to claim 1 is characterized in that: described waste heat boiler (9) is preferably two pressure waste heat boilers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200448851U CN202947489U (en) | 2012-02-13 | 2012-02-13 | Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012200448851U CN202947489U (en) | 2012-02-13 | 2012-02-13 | Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine |
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| CN202947489U true CN202947489U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200448851U Expired - Fee Related CN202947489U (en) | 2012-02-13 | 2012-02-13 | Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538492A (en) * | 2012-02-13 | 2012-07-04 | 孙海祥 | Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine |
| CN103335531A (en) * | 2013-07-16 | 2013-10-02 | 柳州钢铁股份有限公司 | Sintering waste heat power generation exhaust gas recycling utilization system |
| CN113739584A (en) * | 2021-09-23 | 2021-12-03 | 龙科天成(厦门)科技有限公司 | Energy-saving equipment for boiler |
-
2012
- 2012-02-13 CN CN2012200448851U patent/CN202947489U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538492A (en) * | 2012-02-13 | 2012-07-04 | 孙海祥 | Waste-heat cascaded utilization system at low-temperature sections of sintering circular cooling machine |
| CN103335531A (en) * | 2013-07-16 | 2013-10-02 | 柳州钢铁股份有限公司 | Sintering waste heat power generation exhaust gas recycling utilization system |
| CN113739584A (en) * | 2021-09-23 | 2021-12-03 | 龙科天成(厦门)科技有限公司 | Energy-saving equipment for boiler |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20160213 |