CN1262809C - High effective reclaiming method and appts. for waste heat of sintering cooling - Google Patents
High effective reclaiming method and appts. for waste heat of sintering cooling Download PDFInfo
- Publication number
- CN1262809C CN1262809C CN 95118804 CN95118804A CN1262809C CN 1262809 C CN1262809 C CN 1262809C CN 95118804 CN95118804 CN 95118804 CN 95118804 A CN95118804 A CN 95118804A CN 1262809 C CN1262809 C CN 1262809C
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- CN
- China
- Prior art keywords
- sintering
- fan housing
- waste gas
- cooling
- induced duct
- Prior art date
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- Ceased
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- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention provides a high-efficiency waste heat recovery method and a device thereof for recovering waste hot gas generated in a sintering cooling process and using the recovered waste hot gas for a sintering (heating) process. The present invention can lead back and utilize waste hot gas generated in a cooling process with a high heat recovery utilizing rate according to the characteristics of sintering and can also be used as a waste gas back leading blower fan to directly utilize waste gas of ore unloading at a machine tail part and waste gas from a cooling machine to an ore occurrence. The temperature and the air quantity of the waste gas is free from the limitation of the device and can be used for the preheating ignition of mix material and the subsequent sintering process of the mix material, and the present invention can increase the heat utilizing rate of the whole sintering process and the level of environmental protection.
Description
The present invention relates to sintering waste heat recoverying and utilizing method and device, the hot waste gas that particularly reclaims the generation of sintering cooling procedure is used for the heat recovery method and the device of sintering (heating) process.
The sintering cooling residual heat obtains extensive, high-caliber recycling already in developed country.Domestic development in recent years is very fast, but the glad employing of most of enterprise is invested, operating cost is higher, and heat utilization efficiency is low but waste heat boiler technology maturation is used to produce steam, has wasted a large amount of used heat resources.Minority enterprise is used for sintering (heating) process nearby with cooling exhaust, directly utilizes its physics heat, has obtained good effect.Typical Disposition is: hot waste gas is guided to by heat resisting exhauster and to be used for pre-heat mixture before the ignition furnace or guiding to ignition furnace is used for igniting combustion supporting after gravity depositing dust and multi-tube dusting purify; Perhaps by being used for hot gas sintering in the air bells cap of the direct air inducing of heat resisting exhauster behind the igniter.Its shortcoming is: in order to prevent the too high damage heat resisting exhauster of EGT, the cold wind inlet valve of automatic control need be set before blower fan, need dust arrester when dust content in stack gas is higher, so the temperature of waste gas and air quantity are subjected to bigger restriction; Because single application heat recovery rate is very low, as want the overall application (being used for pre-heat mixture, igniting combustion supporting, hot gas sintering simultaneously) just must three heat resisting exhausters, not only invest highly, the coordination between blower fan be also very difficult.
The objective of the invention is to provide a kind of can recycle the used heat that the sintering cooling procedure produces, and invest cheap, simple and reliable, applied widely sintering cooling residual heat recoverying and utilizing method and device with very high heat utilization efficiency, heat recovery rate.
The present invention is with cooler blower fan double as waste gas air-introduced machine (be blower fan held concurrently cooling effect and waste gas return the effect of drawing), and waste gas is directly introduced in the air bells cap of sintering pallet top by airduct.Because shorter to the distance of air bells cap through tail from cooler, this is possible, but as use common airduct, fan housing, just may be because of drag losses is big, hot waste gas supply and demand unbalanced causes sealing difficult, fluctuation of service.Require the drag losses of airduct as far as possible little, for air bells cap, normally cooperate with sintering pallet and charge level to form a cuboid or similar bar shaped space by five faces of fan housing, and the four edges that cooperates with chassis and charge level of sealing fan housing bottom, it is excessive to limit waste gas.The present invention is by opening wide the rear end (fan housing is towards the face of tail) of fan housing, and make wind supply quantity less than the exhausting amount under the chassis in the fan housing, hot waste gas is satisfied the demands with the past order (chassis traffic direction) backward, cold air can enter fan housing from the fan housing rear end, thereby have the interface of a hot and cold air near the fan housing rear end, this interface can move forward and backward near the fan housing rear end with the relative fluctuation of demand with the hot waste gas wind supply quantity.Best implementation method is that induced duct enters the fan housing certain-length from top, fan housing rear end.Such fan housing is the supply-demand relationship of balanced hot waste gas within the specific limits, makes to be zero-pressure or minute-pressure state in the fan housing, helps the sealing of fan housing and cooler, reduces air inducing resistance and power consumption, improves reliability.
On the basis of above-mentioned fan housing, with blower fan from fan housing, preferably by fan housing front end top air inducing, be used for preheating of mixed material and igniting combustion supporting, the full use hot waste gas, to obtain higher heat recovery rate, the more important thing is that negative pressure and flow field that this place's air inducing produces help the smooth air inducing of main induced duct, assurance device stable and reliable operation.
Because main induced duct is higher by waste gas flow velocity in tail and the pipe, can uses the bernoulli principle recycling and unload the hot waste gas that the ore deposit produces to cooler charging process, to obtain higher wind-warm syndrome and heat recovery rate from tail.These heatrejections are higher relatively, but close the dust concentration height, are difficult to usually utilize.It is excessive and pollute the sintering platform that aforementioned fan housing can effectively prevent to close dirt waste gas, thereby can directly utilize these high concentrations to close the dirt hot waste gas easily.
The present invention compares with existing method and device, because with cooling blower double as waste gas air-introduced machine and adopt front end air inducing, rear end open, certain air bells cap from proportionality action is arranged, do not need jumbo dust arrester, heat resisting exhauster and cold wind suction apparatus, can be comprehensively, the hot waste gas that reclaims, utilize the sintering cooling procedure to produce efficiently, not only invest cheap, the heat recovery rate height, utilize effective, and reliability height, applied widely.Wind-warm syndrome, air quantity can according to produce, technology is actual is optimized, existing method and device then are limited by heat resisting exhauster to a great extent.
The invention process example: with cooler (air blast, exhausting cooler all can) cooling blower double as waste gas air-introduced machine, blower fan should be able to speed governing, strengthens the sealing of cooler, and induced duct enters the fan housing certain-length through tail from top, air bells cap rear end.The induced duct lower wall is separated into two passages up and down with air bells cap, top passage is an induced duct, in its outlet front lower place the deflector of adjusting the air-flow distribution is set, waste gas arrives fan housing the place ahead under negative pressure that inertia and fan housing front end blower fan air inducing produce and flow field effect, and satisfy the demands with in the past backward order, part waste gas flows downwards, backward, enters following passage; Following passage opens wide backward, and cold air can enter from the rear end, thereby has the interface of a hot and cold air in this passage, and this interface can move forward and backward in passage with the relative fluctuation of waste gas supply and demand.Utilize in the warm-air pipe waste gas flow fast that produce and pressure differential (according to bernoulli principle) outside air, the high temperature of recyclable tail, high dust content waste gas, two best points are cooler charging place and hot sieve outlet.Be used for igniting combustion supporting and pre-heat mixture with blower fan from air bells cap front end top air inducing, the radiant heat of charge level improves EGT behind the utilisation point fire herein, strengthens result of use.The resistance that induced duct produces should be as far as possible little, if reduce investment, can utilize the exhaust chimney of cooler.
Claims (6)
1, a kind ofly reclaims the residual heat using device that sintering cooling procedure hot waste gas is used for sintering process, it is characterized in that air-introduced machine is the cooling blower of cooler with blower fan.
2, according to the described device of claim 1, it is characterized in that opening wide the rear end of sintering pallet top fan housing, make cold air enter fan housing from the fan housing rear end, induced duct enters the fan housing certain-length from top, fan housing rear end.
3,, it is characterized in that induced duct outlet front lower place is provided with deflector according to the described device of claim 2.
4, according to the described device of claim 1, it is characterized in that induced duct passes through sintering machine tail, reclaim from sintering machine tail and unload the hot waste gas that the ore deposit produces to cooler charging process.
5, a kind of heat recovery method of using the described device of claim 1 is characterized in that with cooling blower waste gas directly being introduced in the fan housing of sintering pallet top by induced duct.
6,, it is characterized in that other with blower fan air inducing from the fan housing of sintering pallet top, is used for preheating of mixed material and igniting combustion supporting according to the described method of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95118804 CN1262809C (en) | 1995-12-06 | 1995-12-06 | High effective reclaiming method and appts. for waste heat of sintering cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95118804 CN1262809C (en) | 1995-12-06 | 1995-12-06 | High effective reclaiming method and appts. for waste heat of sintering cooling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1138687A CN1138687A (en) | 1996-12-25 |
| CN1262809C true CN1262809C (en) | 2006-07-05 |
Family
ID=5081784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95118804 Ceased CN1262809C (en) | 1995-12-06 | 1995-12-06 | High effective reclaiming method and appts. for waste heat of sintering cooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1262809C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100456020C (en) * | 2004-12-28 | 2009-01-28 | 宝山钢铁股份有限公司 | Online method for testing burn through index |
| CN101782333B (en) * | 2010-03-19 | 2012-10-03 | 湖南永清环保股份有限公司 | Method for controlling air leakage of recirculation-cooler seal cover and exhaust pressure in seal cover |
| CN102021314B (en) * | 2010-12-14 | 2012-04-18 | 河南济源钢铁(集团)有限公司 | Sinter cooler lump ore braking system |
| CN103629776A (en) * | 2012-08-29 | 2014-03-12 | 昆山贝环电子技术服务有限公司 | Optimizing system of air conditioner workshop |
| CN109868360A (en) * | 2019-04-18 | 2019-06-11 | 临沂玫德庚辰金属材料有限公司 | A kind of energy saving technique of sinter production |
-
1995
- 1995-12-06 CN CN 95118804 patent/CN1262809C/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN1138687A (en) | 1996-12-25 |
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