CN102980413A - Afterheat utilization device of sintering machine - Google Patents
Afterheat utilization device of sintering machine Download PDFInfo
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- CN102980413A CN102980413A CN2012105139952A CN201210513995A CN102980413A CN 102980413 A CN102980413 A CN 102980413A CN 2012105139952 A CN2012105139952 A CN 2012105139952A CN 201210513995 A CN201210513995 A CN 201210513995A CN 102980413 A CN102980413 A CN 102980413A
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- temperature flue
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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
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Abstract
The invention relates to an afterheat utilization device, in particular to an afterheat utilization device of a sintering machine, and belongs to the technical field of machinery. The afterheat utilization device structurally comprises an afterheat boiler and an annular cooler communicated with the afterheat boiler. The sintering machine afterheat utilization device has an improvement point that a compensation hot air furnace is also arranged between the afterheat boiler and the annular cooler, the compensation hot air furnace is provided with an air inlet end and two air outlet ends, the air inlet end is respectively communicated with a liquefied gas pipe, a coal gas pipe and a combustion support air pipe, one air outlet end is communicated with the afterheat boiler through a corresponding air outlet pipeline, and the other air outlet end is communicated with a high-temperature smoke gas pipeline through the corresponding air outlet pipeline. The sintering machine afterheat utilization device has the beneficial effects that the economic benefits are obviously improved, the operation of a unit is stabilized, and the service life of the unit is prolonged.
Description
Technical field
The present invention relates to a kind of residual heat using device, especially a kind of sintering machine residual heat using device belongs to
In field of mechanical technique.
Background technology
Existing 300m
2Half can join a cover residual heat using device sintering machine, its principle is to utilize central cooler technique one, two sections hot blast produces steam-electric power by waste heat boiler, and the flue-gas temperature of central cooler technique one section (high temperature section) is about 350-400 (450max) ℃, the flue-gas temperature of central cooler technique two sections (middle-temperature sections) is about 250-300 ℃, because the flue-gas temperature of central cooler, flowed fluctuation is larger, make waste heat boiler be difficult to continue normal production, cause the Turbo-generator Set operating rate not reach stability requirement (being not less than 92%), be badly in need of a kind of device that satisfies the normal steady production of waste heat boiler.
Summary of the invention
The present invention wants the technical solution problem to be: the defective for prior art exists proposes a kind of sintering
The machine residual heat using device satisfies the needs of steady production.
The present invention is the technical solution problem by the following technical programs, a kind of sintering machine residual heat using device, comprise waste heat boiler, the central cooler that is communicated with waste heat boiler, described central cooler is provided with two groups, be communicated with waste heat boiler by high-temperature flue gas pipeline and middle temperature flue respectively, the central cooler of described high-temperature flue gas pipeline to waste heat boiler section is provided with the high-temperature flue gas control valve, the central cooler of described middle temperature flue to waste heat boiler section is provided with middle temperature smoke regulating valve, described height, middle temperature flue end is respectively equipped with height, middle temperature flue diffusion valve, its improvements are: also be provided with the compensation hot-blast stove between described waste heat boiler and the central cooler, described compensation hot-blast stove is provided with an inlet end and two outlet sides, described inlet end respectively with liquefaction tracheae, gas pipe and combustion-aid air pipe are communicated with, a described outlet side is communicated with waste heat boiler by corresponding with it outlet pipe, and another outlet side is by corresponding with it outlet pipe and described high-temperature flue gas pipeline communication.
Wherein, the access port of the outlet pipe of described compensation hot-blast stove and described high-temperature flue gas pipeline is located between described high-temperature flue gas control valve and the described waste heat boiler.
Be equipped with valve on the outlet pipe of described compensation hot-blast stove and the admission line.
In conjunction with actual conditions, after the compensation hot-blast stove comes into operation, can solve three kinds of technical problems under the operating mode:
1, sintering circular-cooler flue-gas temperature, flow are normal, when institute's producing steam satisfies the steam turbine power generation needs, in two kinds of situation: a kind of is that gaspipe network is when having coal gas to have more than needed (gas to generate electricity comes into operation forward and backward), the compensation hot-blast stove is operated at full capacity, and produces 400 ℃ of high-temperature flue gas access original systems of 140,000 NM3/h; Another kind is gaspipe network when not having enough coal gas (or Power Generation by BF Gas come into operation after), and the auxiliary heat wind furnace guarantees that underrun gets final product;
2, the sintering circular-cooler flue-gas temperature, when flow is on the low side, when institute's producing steam can not satisfy the steam turbine power generation needs, the compensation hot-blast stove was operated at full capacity, theoretical 600 ℃ of high-temperature flue gas access original systems that produce 140,000 NM3/h;
When 3, the sintering circular-cooler short time stops production, require auxiliary combustion gas furnace to supply separately waste heat boiler, circulating fan system and central cooler interface are closed self-organizing system into and out of pipeline valve, produce 400 ℃ of high-temperature flue gas access original systems of 140,000 NM3/h, guarantee steam turbine generating requirement.
The present invention adopts at the original system periphery increases an auxiliary hot-blast stove, produce generally speaking 140,000 Nm3/h, (the hot-blast stove outlet arranges and mixes the cold wind mouth 380-400 ℃ middle temperature flue gas, just control better hot-blast stove outlet temperature and pressure), send into the high-temperature pipe of former bootstrap system by hot air duct, replenish a part of high-temperature flue gas to present waste heat boiler, guarantee that institute's producing steam amount can guarantee steam turbine stable operation.This coal gas hot-blast stove can provide and satisfy the heat that waste heat boiler produces 400 ℃ of steam of 12 tons of 2Mpa.Simultaneously, for the ease of the Load Regulation of afterheat boiler system, the PLC system of hot-blast stove is arranged in the Central Control Room of waste heat boiler, low-voltage cabinet is arranged in the low-pressure chamber of waste heat boiler.
During use, system's coal gas is from 300m
2Draw the corresponding valve of duct arrangement and partition measure on the sintering machine gas main; Combustion air needs the system configuration combustion fan, directly draws air as combustion air from periphery; A heat minute stove is mixed the required cold wind of stove and is got (about 120 ℃ of wind-warm syndrome behind central cooler high temperature circulation blower fan, 3kpa pressure), connect 1 arm and cause the auxiliary heat wind furnace, control valve is set on the pipeline, can make and keep in the substantially constant situation of circulating fan load, take full advantage of circulating flue gas, reach the energy-saving effect of system; The assisted with high-temperature flue gas cause bump behind the former high-temperature pipe valve logical.
Advantage of the present invention is as follows:
1. pressing direct economic benefit calculates: the steam estimation by the compensation hot blast stove design produces 12T, pressure 2MPa, temperature 350 increases generated output greatly about about 2000 ~ 2500kw.About 1,650 ten thousand kwh/ of annual electricity generating capacity.Since cogeneration is gone into operation owing to the reasons such as waste heat deficiency are opened, shut down frequent; stop at present machine total time at least at 3-4 hour at every turn; pressing 2000kw/h by average each stop minimizing generating dutation 2 hours (except the time effects of parking itself), generated energy calculates; namely generate electricity less 4000kwh. by shutting down less weekly 2 times at every turn, can increase per month about 3.2 ten thousand kwh of generated energy.About 38.4 ten thousand kwh/ of annual electricity generating capacity.All amount to about 1,013 ten thousand yuan/year.
2. by indirect economic effect: the frequent starting state of cogeneration unit is unfavorable for safe operation and the maintaining of unit at present, affect unit service life, can avoid the frequent starting generating set after increasing the compensation hot-blast stove, can also slow down in addition daily unit load fluctuation, stablize unit operation, prolong unit service life;
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
The specific embodiment
Embodiment
The structure of present embodiment as shown in Figure 1, a kind of sintering machine residual heat using device, comprise waste heat boiler 1, two groups of central coolers 2 that are communicated with waste heat boiler and 3, be communicated with waste heat boiler 1 by high-temperature flue gas pipeline 4 and middle temperature flue 5 respectively, the central cooler 2 of high-temperature flue gas pipeline 4 to waste heat boiler section is provided with high-temperature flue gas control valve 6, the central cooler 3 of middle temperature flue 5 to waste heat boiler section is provided with middle temperature smoke regulating valve 7, high, middle temperature flue end is respectively equipped with high-temperature flue gas pipeline diffusion valve 8 and middle temperature flue diffusion valve 9, also be provided with compensation hot-blast stove 10 between waste heat boiler 1 and central cooler 2 and 3, compensation hot-blast stove 10 is provided with an inlet end and two outlet sides, inlet end respectively with liquefaction tracheae 11, gas pipe 12 and combustion-aid air pipe 13 are communicated with, an outlet side is communicated with waste heat boiler 1 by corresponding with it outlet pipe, and another outlet side is by corresponding with it outlet pipe and high-temperature flue gas pipeline communication.Wherein compensating the outlet pipe of hot-blast stove 10 and the access port of high-temperature flue gas pipeline 4 is located between high-temperature flue gas control valve 6 and the waste heat boiler 1.Be equipped with valve on the outlet pipe of compensation hot-blast stove 10 and the admission line.
During use, system's coal gas is from 300m
2Draw the corresponding valve of duct arrangement and partition measure on the sintering machine gas main; Combustion air needs the system configuration combustion fan, directly draws air as combustion air from periphery; A heat minute stove is mixed the required cold wind of stove and is got (about 120 ℃ of wind-warm syndrome behind central cooler high temperature circulation blower fan, 3kpa pressure), connect an arm and cause the auxiliary heat wind furnace, control valve is set on the pipeline, can make and keep in the substantially constant situation of circulating fan load, take full advantage of circulating flue gas, reach the energy-saving effect of system; The assisted with high-temperature flue gas cause bump behind the former high-temperature pipe valve logical.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the scope of protection of present invention.
Claims (3)
1. sintering machine residual heat using device, comprise waste heat boiler, the central cooler that is communicated with waste heat boiler, described central cooler is provided with two groups, be communicated with waste heat boiler by high-temperature flue gas pipeline and middle temperature flue respectively, the central cooler of described high-temperature flue gas pipeline to waste heat boiler section is provided with the high-temperature flue gas control valve, the central cooler of described middle temperature flue to waste heat boiler section is provided with middle temperature smoke regulating valve, described height, middle temperature flue end is respectively equipped with height, middle temperature flue diffusion valve, it is characterized in that: also be provided with the compensation hot-blast stove between described waste heat boiler and the central cooler, described compensation hot-blast stove is provided with an inlet end and two outlet sides, described inlet end respectively with liquefaction tracheae, gas pipe and combustion-aid air pipe are communicated with, a described outlet side is communicated with waste heat boiler by corresponding with it outlet pipe, and another outlet side is by corresponding with it outlet pipe and described high-temperature flue gas pipeline communication.
2. described sintering machine residual heat using device according to claim 1, it is characterized in that: the access port of the outlet pipe of described compensation hot-blast stove and described high-temperature flue gas pipeline is located between described high-temperature flue gas control valve and the described waste heat boiler.
3. described sintering machine residual heat using device according to claim 1 is characterized in that: be equipped with valve on the outlet pipe of described compensation hot-blast stove and the admission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105139952A CN102980413A (en) | 2012-12-05 | 2012-12-05 | Afterheat utilization device of sintering machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105139952A CN102980413A (en) | 2012-12-05 | 2012-12-05 | Afterheat utilization device of sintering machine |
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| CN102980413A true CN102980413A (en) | 2013-03-20 |
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| CN2012105139952A Pending CN102980413A (en) | 2012-12-05 | 2012-12-05 | Afterheat utilization device of sintering machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066713A (en) * | 2015-07-21 | 2015-11-18 | 鞍钢集团工程技术有限公司 | Process capable of improving waste heat recovery yield of annular cooler |
| CN106705016A (en) * | 2017-03-01 | 2017-05-24 | 北京福生智源科技有限公司 | Waste heat recovery steam production quality improving equipment applicable to industrial enterprises |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776399A (en) * | 2010-02-10 | 2010-07-14 | 中冶长天国际工程有限责任公司 | Waste heat boiler for sintering circular cooler and heat-electricity combined supply system of waste heat boiler |
| CN102589305A (en) * | 2012-02-24 | 2012-07-18 | 思安新能源股份有限公司 | Sintering waste heat generating system |
| CN203011163U (en) * | 2012-12-05 | 2013-06-19 | 江苏永钢集团有限公司 | Waste heat utilization device of sintering machine |
-
2012
- 2012-12-05 CN CN2012105139952A patent/CN102980413A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776399A (en) * | 2010-02-10 | 2010-07-14 | 中冶长天国际工程有限责任公司 | Waste heat boiler for sintering circular cooler and heat-electricity combined supply system of waste heat boiler |
| CN102589305A (en) * | 2012-02-24 | 2012-07-18 | 思安新能源股份有限公司 | Sintering waste heat generating system |
| CN203011163U (en) * | 2012-12-05 | 2013-06-19 | 江苏永钢集团有限公司 | Waste heat utilization device of sintering machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066713A (en) * | 2015-07-21 | 2015-11-18 | 鞍钢集团工程技术有限公司 | Process capable of improving waste heat recovery yield of annular cooler |
| CN105066713B (en) * | 2015-07-21 | 2017-04-19 | 鞍钢集团工程技术有限公司 | Process capable of improving waste heat recovery yield of annular cooler |
| CN106705016A (en) * | 2017-03-01 | 2017-05-24 | 北京福生智源科技有限公司 | Waste heat recovery steam production quality improving equipment applicable to industrial enterprises |
| 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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Application publication date: 20130320 |