CN105276996B - The mixed wind system of flue gas recirculation sintering - Google Patents
The mixed wind system of flue gas recirculation sintering Download PDFInfo
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- CN105276996B CN105276996B CN201510872962.0A CN201510872962A CN105276996B CN 105276996 B CN105276996 B CN 105276996B CN 201510872962 A CN201510872962 A CN 201510872962A CN 105276996 B CN105276996 B CN 105276996B
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- flue gas
- guide plate
- shell
- used heat
- spiral guide
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Abstract
The present invention discloses a kind of mixed wind system of flue gas recirculation sintering, including circulating flue gas pipeline, central cooler waste heat flue and it is arranged on described cycle flue and the wind-mixer of central cooler waste heat flue junction, wherein described wind-mixer includes cylinder-like shell and the spiral guide plate being arranged in the shell, flue gas in the cycle flue produces eddy flow in the presence of spiral guide plate, and strong turbulent flow is formed after converging with used heat air.
Description
Technical field
It is the important step of Ferrous Metallurgy flue gas recirculation sintering process the invention belongs to metallurgical equipment and process regime.It
On sintering machine flue to the flue gas recirculation airduct between the flue gas cover of pallet top.
Background technology
Sintering production when using flue gas recirculation sintering technology, generally will originally all in the sintering flue gases of outer row temperature and
The of a relatively high partial fume of oxygen content, returns to flue gas cover on sintering pallet through circulating fan and recycles, the purpose is to
Outer waste air total amount is reduced, while recycling the sensible heat and latent heat of sintering flue gas, energy-conservation, the dual purpose of emission reduction is reached.Root
According to the research report of domestic authoritative unit, when using flue gas recirculation sintering technology, it is ensured that the quality index of sintering deposit not by
Oxygen content in influence, circulating flue gas must not be less than 18%, to reach the guarantee value, usually require that in the flue gas of low oxygen content
It is mixed into the part used heat air of central cooler discharge.
Therefore when using flue gas recirculation sintering technology, the Blending Efficiency of Blending of circulating flue gas and used heat air is directly connected to burning
Tie the quality index of ore deposit.
The flue gas recirculation that the country is now used at present sinters air mixing device as shown in figure 1, the circulation cigarette from circulating flue gas pipe 1
Gas converges after mixed flue gas pipe 3 is entered with the hot-air from used heat air hose 2, is sent to be located on sintering pallet
The flue gas cover in portion is used.The principle of this kind of flue gas air mixing device is to produce phase naturally using the flowing in the duct of two kinds of flue gases
Mutually infiltration, mixing, its disadvantage is that mixing is uneven, and effectively mixing is especially difficult in the range of limited duct length, from
And cause mixed flue gas oxygen content on flue gas cover length direction uneven, and then influence the quality uniformity of sintering deposit.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of mixing degree for improving mixed flue gas, it is ensured that flue gas recirculation sintering process
Sinter quality the mixed wind system of flue gas recirculation sintering.
To reach above-mentioned purpose, the present invention is including circulating flue gas pipeline, central cooler used heat pipeline and is arranged on described
Circulating flue gas pipeline and the wind-mixer of central cooler used heat pipeline junction, wherein the wind-mixer includes cylinder-like shell and set
The spiral guide plate in the shell is put, the central cooler used heat pipeline is set in the shell, the central cooler used heat
Pipeline is coaxially disposed with the shell, and the circulating flue gas pipeline and the shell are tangent to be set, the circulating flue gas pipeline with
The enclosure connection, the spiral guide plate is looped around the central cooler used heat pipeline, the outside of the spiral guide plate
It is connected with the inwall of the shell, the inner side of the spiral guide plate is connected with the outer wall of the central cooler used heat pipeline, described
Flue gas in cycle flue produces eddy flow in the presence of spiral guide plate, after converging with used heat air formed turbulent flow by with institute
The mixed flue gas passage that shell is connected is stated to be connected.
Further, the outer centrosymmetric structure of the structure of the spiral guide plate, the helical angle of the spiral guide plate is
45°。
The mixed wind system of flue gas recirculation sintering of the present invention, sets a whirlwind in the junction of circulating flue gas and used heat air and is oriented to
Body, forms eddy flow by circulating flue gas first, and then forms strong turbulent flow after converging with used heat air, is mixed so as to obtain height
Mixed flue gas.Compared with existing flue gas recirculation sintering air mixing device, the advantage using the new air mixing device of the present invention is
The mixing degree of mixed flue gas is greatly improved, so as to ensure sintering process equilibrium progress, and then the quality of sintering deposit is improved.
Brief description of the drawings
Fig. 1 is the mixed wind system structural representation of flue gas recirculation sintering of the prior art；
Fig. 2 is the mixed wind system structural representation of flue gas recirculation sintering of the present invention.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
Embodiment
As shown in Fig. 2 the mixed wind system of the present embodiment flue gas recirculation sintering, including circulating flue gas pipeline 1, central cooler used heat pipe
Road 2 and described circulating flue gas pipeline and the wind-mixer 4 of central cooler used heat pipeline junction are arranged on, wherein the mixed wind
Device includes cylinder-like shell and the spiral guide plate 3 being arranged in the shell, and the central cooler used heat pipeline is set in described
In shell, the central cooler used heat pipeline is coaxially disposed with the shell, the circulating flue gas pipeline with the shell is tangent sets
Put, the circulating flue gas pipeline is connected with the enclosure, the spiral guide plate is looped around the central cooler used heat pipeline,
The outside of the spiral guide plate is connected with the inwall of the shell, the inner side of the spiral guide plate and the central cooler used heat
The outer wall of pipeline is connected, and the flue gas in the cycle flue produces eddy flow in the presence of spiral guide plate, is converged with used heat air
Strong turbulent flow is formed after conjunction, into mixed flue gas pipeline 5.
The course of work of the present embodiment is：Circulating flue gas from sintering flue is by circulating fan via circulating flue gas pipe
The tangential wind-mixer for blasting circle, produces eddy flow, then with the used heat axially into wind-mixer in the presence of spiral guide plate
Air converges into mixed flue gas pipe, and strong immixture occurs in the process, so as to form the mixing cigarette that height is mixed
Gas.
Further, the outer centrosymmetric structure of the structure of the spiral guide plate, the helical angle of the spiral guide plate is
45°。
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be defined by claim is defined.
Claims (2)
1. a kind of mixed wind system of flue gas recirculation sintering, it is characterised in that：Including circulating flue gas pipeline, central cooler used heat pipeline and
The wind-mixer of circulating flue gas pipeline and central cooler used heat pipeline junction described in being arranged on, wherein the wind-mixer includes circle
Cylindrical case and the spiral guide plate being arranged in the shell, the central cooler used heat pipeline are set in the shell, institute
State central cooler used heat pipeline to be coaxially disposed with the shell, the circulating flue gas pipeline and the tangent setting of the shell are described to follow
Ring flue is connected with the enclosure, and the spiral guide plate is looped around the central cooler used heat pipeline, the spiral
The outside of guide plate is connected with the inwall of the shell, and the inner side of the spiral guide plate is outer with the central cooler used heat pipeline
Wall is connected, and the flue gas in the cycle flue produces eddy flow in the presence of spiral guide plate, is formed after converging with used heat air
Turbulent flow with the mixed flue gas passage that the shell is connected by being connected.
2. the mixed wind system of flue gas recirculation sintering according to claim 1, it is characterised in that：The structure of the spiral guide plate
Outer centrosymmetric structure, the helical angle of the spiral guide plate is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510872962.0A CN105276996B (en) | 2015-11-30 | 2015-11-30 | The mixed wind system of flue gas recirculation sintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510872962.0A CN105276996B (en) | 2015-11-30 | 2015-11-30 | The mixed wind system of flue gas recirculation sintering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105276996A CN105276996A (en) | 2016-01-27 |
| CN105276996B true CN105276996B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510872962.0A Active CN105276996B (en) | 2015-11-30 | 2015-11-30 | The mixed wind system of flue gas recirculation sintering |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113237347B (en) * | 2021-04-19 | 2022-12-13 | 北京首钢国际工程技术有限公司 | Sintering flue gas circulating air mixing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000226618A (en) * | 1999-02-04 | 2000-08-15 | Kawasaki Steel Corp | Method for recovering exhaust heat in cooler for sintered ore and cooler for sintered ore |
| CN103240014B (en) * | 2013-05-30 | 2015-09-02 | 中冶华天南京工程技术有限公司 | Flue gas mixing arrangement |
| CN104019672A (en) * | 2014-06-06 | 2014-09-03 | 上海金自天正信息技术有限公司 | Sintering flue gas treatment and cyclic utilization method |
| CN205156632U (en) * | 2015-11-30 | 2016-04-13 | 中冶华天工程技术有限公司 | Flue gas recirculation sintering mixes wind system all |
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Address after: Jianye District of Nanjing City, Jiangsu province 210019 the Fuchun River Street No. 18 Patentee after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: 243005 No. 699 West Hunan Road, Anhui, Ma'anshan Patentee before: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC |