CN203704677U - Multistage air inlet dual-pressure waste heat boiler for sintering waste heat - Google Patents
Multistage air inlet dual-pressure waste heat boiler for sintering waste heat Download PDFInfo
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- CN203704677U CN203704677U CN201320810236.2U CN201320810236U CN203704677U CN 203704677 U CN203704677 U CN 203704677U CN 201320810236 U CN201320810236 U CN 201320810236U CN 203704677 U CN203704677 U CN 203704677U
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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
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- 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 utility model discloses a multistage air inlet dual-pressure waste heat boiler for sintering waste heat. The multistage air inlet dual-pressure waste heat boiler comprises a boiler body, wherein a plurality of groups of heat exchange coiled pipes are respectively arranged in the boiler body from top to bottom in sequence; at least two flue gas inlets for being connected with a sintering furnace flue are formed in the furnace body; the two flue gas inlets are respectively called as a high-temperature flue gas inlet and a low-temperature flue gas inlet; a soot blower is arranged on the inner side wall of the boiler body; a smoke outlet is formed in the side wall of the boiler body, at the lower side of the multiple groups of heat exchange coiled pipes; a soot discharge opening is formed in the lower end of the boiler body. According to the multistage air inlet dual-pressure waste heat boiler disclosed by the utility model, step recovery and high-efficiency transformative use of waste heat resources of flue gas are realized, stable and reliable operation is realized, the automatic degree is high, the recovery quality of the flue gas can be effectively improved and the recovery quality and quantity of steam can be improved.
Description
Technical field
The utility model relates to a kind of sintering waste heat boiler, particularly relates to the two pressure waste heat boilers of the multistage air intake of a kind of sintering waste heat.
Background technology
Current, steel industry development faces a severe challenge and new opportunity to develop, traditional extensive development model is hard to carry on, an urgent demand industry and enterprise is taking energy-saving and emission-reduction as handgrip, actively transform the mode of development, utilize new and high technology transformation, promote industry technology managerial skills, walk new road toward industrialization high in technological content, good in economic efficiency, low in resources consumption, low in the pollution of the environment.In metallurgical production, sintering circuit energy consumption is only second to Iron-smelting, accounts for 9%～12% of total energy consumption, has huge energy-saving potential.
In sintering circuit total energy consumption, there is nearly 30% heat energy to enter atmosphere with the sensible heat form of sintering circular-cooler waste gas.For this reason, reclaiming this part of waste heat resource of use according to the mode of step recovery, reasonable energy is as much as possible the important channel of sintered, energy saving consumption reduction.Traditional way of recycling is that this method is not considered consuming energy according to its quality, energy recovery inefficiency by unified the flue gas of the central cooler steam that produces a kind of pressure and temp grade that reclaims.For this reason, need to provide a set of complete central cooler classification to utilize fume afterheat to produce two waste heat recovery apparatus of pressing steam, reach the maximization of utilization of resources benefit.
Summary of the invention
The purpose of this utility model is to propose the two pressure waste heat boiler technical schemes of the multistage air intake of a kind of sintering waste heat, this equipment can maximize to reclaim and use central cooler residual heat resources, effectively reduce post personnel and Maintenance and Repair personnel labour intensity, steady production, solved that site environment pollutes and harm problem to human body.
To achieve these goals, technical scheme of the present invention is: the two pressure waste heat boilers of multistage air intake for a kind of sintering waste heat, comprise boiler body, in boiler body, order is respectively arranged with many group heat exchange coils from top to bottom, on described body of heater, be provided with at least two smoke inlets for being connected with sintering furnace flue, two smoke inlets are called high-temperature flue gas import and low-temperature flue gas import, on boiler body madial wall, be provided with soot blower, on the boiler body sidewall of many group heat exchange coil downsides, be provided with outlet flue, be provided with ash discharging hole in boiler body lower end.
Described many group heat exchange coils comprise the first low-pressure superheater coil pipe, the second low-pressure superheater coil pipe, the first low pressure evaporator coil pipe, the second low pressure evaporator coil pipe, the first low-pressure coal saver coil pipe, the second low-pressure coal saver coil pipe; Described the second low-pressure superheater coil pipe is arranged in the passage of high-temperature flue gas import, and two smoke inlet passages under the second low-pressure superheater coil pipe are disposed with described the first low-pressure superheater coil pipe, the second low pressure evaporator coil pipe, the first low pressure evaporation coil, the second low-pressure coal saver coil pipe, the first low-pressure coal saver coil pipe; Described the second low-pressure coal saver coil pipe, the first low-pressure coal saver coil pipe are respectively arranged with water inlet and steam outlet, described the first low pressure evaporator coil pipe, the second low pressure evaporator coil pipe are respectively arranged with steam import and gas outlet, and described the first low-pressure superheater coil pipe and the second low-pressure superheater coil pipe are respectively arranged with air inlet and gas outlet.
Described boiler also comprises the first low-pressure drum and the second low-pressure drum, described the first low-pressure coal saver coil pipe and the water inlet of the second low-pressure coal saver coil pipe be connected with a water-supply source by feed pump respectively, steam outlet and the steam import that is connected respectively the first low-pressure drum of described the first low-pressure coal saver coil pipe and the first low pressure evaporator coil pipe, the first low-pressure drum steam outlet connects the steam import of the first low pressure evaporator coil pipe, and the steam (vapor) outlet of the first low-pressure drum connects the air inlet of the first low-pressure superheater coil pipe; The steam outlet of described the second low-pressure coal saver coil pipe connects the steam import of the second low-pressure drum, the gas outlet of described the second low pressure evaporator coil pipe connects the air inlet of the second low-pressure drum, the steam outlet of described the second low-pressure drum connects the steam import of the second low pressure evaporator coil pipe, the steam (vapor) outlet of described the second low-pressure drum connects the air inlet of the second low-pressure superheater coil pipe, the gas outlet of described the second low-pressure superheater coil pipe is as high-temperature steam outlet output, and the gas outlet of described the first low-pressure superheater coil pipe is as Low Temperature Steam outlet output.
On the outlet flue of described boiler body sidewall, be provided with air-introduced machine.
Described soot blower is shock wave soot blower.
Between inherent two smoke inlets of described boiler body, be provided with dividing plate.
The utility model to the contribution of prior art is:
(1) the utility model has been realized the recovery of fume afterheat resource step, Efficient Conversion use, stable and reliable operation; Automaticity is high, can effectively improve the quality of off-gas recovery, can improve the quality and quantity of Steam Recovery;
(2) adopt two pressure waste heat boilers, can produce two kinds of steam that quality is different, can adjust flexibly utilization of steam according to balance of steam in factory, can maximize to reclaim to use central cooler residual heat resources, effectively reduce post personnel and Maintenance and Repair personnel labour intensity, steady production, solved that site environment pollutes and harm problem to human body.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Brief description of the drawings
Fig. 1 the utility model structural representation.
Detailed description of the invention
The two pressure waste heat boiler embodiment of multistage air intake for a kind of sintering waste heat, referring to Fig. 1, described boiler comprises boiler body 1, in boiler body, order is respectively arranged with many group heat exchange coils from top to bottom, on described body of heater, be provided with at least two smoke inlets for being connected with sintering furnace flue, two smoke inlets are called high-temperature flue gas import 1-1 and low-temperature flue gas import 1-2, on boiler body madial wall, be provided with soot blower 2, on the boiler body sidewall of many group heat exchange coil downsides, be provided with outlet flue 1-3, be provided with ash discharging hole 1-4 in boiler body lower end.
Described many group heat exchange coils comprise the first low-pressure superheater coil pipe 3, the second low-pressure superheater coil pipe 4, the first low pressure evaporator coil pipe 5, the second low pressure evaporator coil pipe 6, the first low-pressure coal saver coil pipe 7, the second low-pressure coal saver coil pipe 8; Described the second low-pressure superheater coil pipe is arranged in the passage of high-temperature flue gas import, and two smoke inlet passages under the second low-pressure superheater coil pipe are disposed with described the first low-pressure superheater coil pipe, the second low pressure evaporator coil pipe, the first low pressure evaporation coil, the second low-pressure coal saver coil pipe, the first low-pressure coal saver coil pipe; Described the second low-pressure coal saver coil pipe, the first low-pressure coal saver coil pipe are respectively arranged with water inlet and steam outlet, described the first low pressure evaporator coil pipe, the second low pressure evaporator coil pipe are respectively arranged with steam import and gas outlet, and described the first low-pressure superheater coil pipe and the second low-pressure superheater coil pipe are respectively arranged with air inlet and gas outlet.
Described boiler also comprises the first low-pressure drum 9 and the second low-pressure drum 10, the water inlet 7-1 of described the first low-pressure coal saver coil pipe and the second low-pressure coal saver coil pipe is connected with a water-supply source 12 by feed pump 11 respectively with 8-1, steam outlet 7-2 and the 5-2 of described the first low-pressure coal saver coil pipe and the first low pressure evaporator coil pipe is connected respectively the steam import of the first low-pressure drum, the first low-pressure drum steam outlet connects the steam import 5-1 of the first low pressure evaporator coil pipe, and the steam (vapor) outlet of the first low-pressure drum connects the air inlet 3-1 of the first low-pressure superheater coil pipe, the steam outlet 8-2 of described the second low-pressure coal saver coil pipe connects the steam import of the second low-pressure drum, the gas outlet 6-2 of described the second low pressure evaporator coil pipe connects the air inlet of the second low-pressure drum, the steam outlet of described the second low-pressure drum connects the steam import 6-1 of the second low pressure evaporator coil pipe, the steam (vapor) outlet of described the second low-pressure drum connects the air inlet 4-1 of the second low-pressure superheater coil pipe, the gas outlet 4-2 of described the second low-pressure superheater coil pipe is as high-temperature steam outlet output 13, the gas outlet 3-2 of described the first low-pressure superheater coil pipe is as Low Temperature Steam outlet output 14.Wherein said water-supply source is provided with oxygen-eliminating device 15
On the outlet flue of described boiler body sidewall, be provided with air-introduced machine 16.
Described soot blower is shock wave soot blower.Low-pressure steam parameter is 0.3～0.6MPa, 180～240 DEG C; Relatively high pressure steam; 1.2～2.0MPa, 270～350 DEG C.
Boiler carries oxygen-eliminating device, and by 2 boiler feed pumps, supplies with boiler and use.
Boiler carries shock wave soot blower, and deashing in use for some time improves heat transmission equipment heat exchange efficiency;
Smoke evacuation air-introduced machine, because sintering circular-cooler generally all adopts hot air circulation technology, therefore boiler exhaust gas is not only in the effect of air-introduced machine, also plays the effect of circulating fan; Smoke evacuation wind-warm syndrome is generally greater than 150 DEG C.
Two-stage flue passage, middle separates with dividing plate, and high-temperature flue gas preferentially enters relatively-high temperature evaporimeter, after entering heat-exchange temperature and reducing and low-temperature flue gas be blended in and enter next stage use.Adopt the air inlet of two-stage flue gas as central cooler adopts 2 grades of off-gas recoveries, as adopt 3 grades of off-gas recoveries to adopt flue gas to divide 3 grades to enter boiler, be so optimized design according to each several part heat exchange amount, boiler carries ash bucket, regularly ash discharge.
Claims (6)
1. the two pressure waste heat boilers of multistage air intake for sintering waste heat, comprise boiler body, in boiler body, order is respectively arranged with many group heat exchange coils from top to bottom, it is characterized in that, on described body of heater, be provided with at least two smoke inlets for being connected with sintering furnace flue, two smoke inlets are called high-temperature flue gas import and low-temperature flue gas import, on boiler body madial wall, be provided with soot blower, on the boiler body sidewall of many group heat exchange coil downsides, be provided with outlet flue, be provided with ash discharging hole in boiler body lower end.
2. the two pressure waste heat boilers of multistage air intake for a kind of sintering waste heat according to claim 1, it is characterized in that, described many group heat exchange coils comprise the first low-pressure superheater coil pipe, the second low-pressure superheater coil pipe, the first low pressure evaporator coil pipe, the second low pressure evaporator coil pipe, the first low-pressure coal saver coil pipe, the second low-pressure coal saver coil pipe; Described the second low-pressure superheater coil pipe is arranged in the passage of high-temperature flue gas import, and two smoke inlet passages under the second low-pressure superheater coil pipe are disposed with described the first low-pressure superheater coil pipe, the second low pressure evaporator coil pipe, the first low pressure evaporation coil, the second low-pressure coal saver coil pipe, the first low-pressure coal saver coil pipe; Described the second low-pressure coal saver coil pipe, the first low-pressure coal saver coil pipe are respectively arranged with water inlet and steam outlet, described the first low pressure evaporator coil pipe, the second low pressure evaporator coil pipe are respectively arranged with steam import and gas outlet, and described the first low-pressure superheater coil pipe and the second low-pressure superheater coil pipe are respectively arranged with air inlet and gas outlet.
3. the two pressure waste heat boilers of multistage air intake for a kind of sintering waste heat according to claim 2, it is characterized in that, described boiler also comprises the first low-pressure drum and the second low-pressure drum, described the first low-pressure coal saver coil pipe and the water inlet of the second low-pressure coal saver coil pipe be connected with a water-supply source by feed pump respectively, steam outlet and the steam import that is connected respectively the first low-pressure drum of described the first low-pressure coal saver coil pipe and the first low pressure evaporator coil pipe, the first low-pressure drum steam outlet connects the steam import of the first low pressure evaporator coil pipe, the steam (vapor) outlet of the first low-pressure drum connects the air inlet of the first low-pressure superheater coil pipe, the steam outlet of described the second low-pressure coal saver coil pipe connects the steam import of the second low-pressure drum, the gas outlet of described the second low pressure evaporator coil pipe connects the air inlet of the second low-pressure drum, the steam outlet of described the second low-pressure drum connects the steam import of the second low pressure evaporator coil pipe, the steam (vapor) outlet of described the second low-pressure drum connects the air inlet of the second low-pressure superheater coil pipe, the gas outlet of described the second low-pressure superheater coil pipe is as high-temperature steam outlet output, and the gas outlet of described the first low-pressure superheater coil pipe is as Low Temperature Steam outlet output.
4. the two pressure waste heat boilers of multistage air intake for a kind of sintering waste heat according to claim 1, is characterized in that, on the outlet flue of described boiler body sidewall, are provided with air-introduced machine.
5. the two pressure waste heat boilers of multistage air intake for a kind of sintering waste heat according to claim 1, is characterized in that, described soot blower is shock wave soot blower.
6. the two pressure waste heat boilers of multistage air intake for a kind of sintering waste heat according to claim 1, is characterized in that, between inherent two smoke inlets of described boiler body, are provided with dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320810236.2U CN203704677U (en) | 2013-12-11 | 2013-12-11 | Multistage air inlet dual-pressure waste heat boiler for sintering waste heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320810236.2U CN203704677U (en) | 2013-12-11 | 2013-12-11 | Multistage air inlet dual-pressure waste heat boiler for sintering waste heat |
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| CN203704677U true CN203704677U (en) | 2014-07-09 |
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| CN201320810236.2U Expired - Fee Related CN203704677U (en) | 2013-12-11 | 2013-12-11 | Multistage air inlet dual-pressure waste heat boiler for sintering waste heat |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214755A (en) * | 2014-07-31 | 2014-12-17 | 盐城市锅炉制造有限公司 | Coke plant semi-coke dry-distillation low-temperature smoke waste heat utilizing method and system thereof |
| CN105135894A (en) * | 2015-07-03 | 2015-12-09 | 中信重工机械股份有限公司 | Device and technique using rotary kiln barrel heat to generate power |
| CN106287628A (en) * | 2016-08-03 | 2017-01-04 | 中冶华天工程技术有限公司 | The adjustable sintering exhaust-heat boiler of superheat steam temperature |
| CN111578245A (en) * | 2020-04-29 | 2020-08-25 | 先尼科化工（上海）有限公司 | Waste heat boiler and descaling method thereof |
-
2013
- 2013-12-11 CN CN201320810236.2U patent/CN203704677U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214755A (en) * | 2014-07-31 | 2014-12-17 | 盐城市锅炉制造有限公司 | Coke plant semi-coke dry-distillation low-temperature smoke waste heat utilizing method and system thereof |
| CN104214755B (en) * | 2014-07-31 | 2015-12-23 | 江苏东九重工股份有限公司 | The blue charcoal destructive distillation low-temperature flue gas waste heat Application way of a kind of coke plant and system thereof |
| CN105135894A (en) * | 2015-07-03 | 2015-12-09 | 中信重工机械股份有限公司 | Device and technique using rotary kiln barrel heat to generate power |
| CN106287628A (en) * | 2016-08-03 | 2017-01-04 | 中冶华天工程技术有限公司 | The adjustable sintering exhaust-heat boiler of superheat steam temperature |
| CN111578245A (en) * | 2020-04-29 | 2020-08-25 | 先尼科化工（上海）有限公司 | Waste heat boiler and descaling method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20201211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |