CN203478925U - Drying bed and evaporated cooling system for water beams of shaft furnace wind-guiding wall - Google Patents
Drying bed and evaporated cooling system for water beams of shaft furnace wind-guiding wall Download PDFInfo
- Publication number
- CN203478925U CN203478925U CN201320342435.5U CN201320342435U CN203478925U CN 203478925 U CN203478925 U CN 203478925U CN 201320342435 U CN201320342435 U CN 201320342435U CN 203478925 U CN203478925 U CN 203478925U
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- water beam
- water
- drying bed
- cooling system
- drum
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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
Abstract
The utility model discloses a drying bed and an evaporated cooling system for water beam of a shaft furnace wind-guiding wall. The utility model comprises a wind-guiding wall water beam and a drying bed water beam. The wind-guiding water beam is placed under the drying bed water beam and is communicated with the drying bed water beam via an ascending water pipe; the evaporated cooling system further comprises a steam pocket and a circulating pump; the steam pocket is arranged over the drying bed water beam; a water inlet of the steam pocket is communicated with the drying bed water beam via the ascending water pipe; a water outlet is communicated with the wind-guiding water beam via a descending water pipe; and the circulating pump is mounted in a parallel way between the steam pocket and the wind-guiding water beam via the descending water pipe. By the use of the drying bed and evaporated cooling system for water beams of shaft furnace wind-guiding wall, service life of the drying bed water beam is greatly prolonged, so not only precious water resource is saved, but steam source for waste heat power generation of a pelletizing shaft furnace is provided by steam produced by the drying bed water beam, thereby achieving energy recovery.
Description
Technical field
The utility model relates to a kind of cooling system, and in particular, it relates to the evaporated cooling system of a kind of air guide wall for vetical furnace and baking bed water beam, belongs to the technical field of iron and steel enterprise's Shaft Furnace Pelletizing Process technique.
Background technology
The Drying Bed of Shaft Furnace Pelletizing Process factory is mainly comprised of water beam and heat-resisting grate bar, and grate bar is placed in to Shui Liangshang, general 1 10m
2grate bar and the green-ball of heavily approximately 6 tons of left and right of shaft furnace water joist support.The hot blast that the hot waste gas rising on shaft furnace preheating zone and air-guiding wall are derived mixes in drying bed bottom, and temperature can reach 350 ~ 650 ℃.In order not make the distortion of water beam, downwarp, all producers all adopt water-cooling pattern to carry out cooling to drying bed water beam.
Generally, baking bed water beam service life of water-cooled is about 1 year, the main cause that water-cooled is dried the damage of bed water beam is water beam Incrustation of pipe, water system power failure, equipment fault etc., cooling effect is poor, under hot conditions, dry the downwarp of bed water beam deflection, leak, for this reason and the loss that blowing out causes cannot be retrieved, and, in cooling procedure, wasted more water resource, the steam that dries the generation of bed water beam cannot utilize.
Utility model content
Technical problem to be solved in the utility model is, overcome the shortcoming of prior art, provide a kind of and extend the service life of drying bed water beam, save cooling water resources, and, the evaporated cooling system that shaft furnace waste heat is carried out the air guide wall for vetical furnace of energy recovery and dries bed water beam.
In order to solve above technical problem, the utility model provides air guide wall for vetical furnace and dries the evaporated cooling system of bed water beam, comprise water beam of wind leading wall and dry bed water beam, described water beam of wind leading wall is arranged at described top of drying bed water beam, and be communicated with by lifting pipe, also comprising drum and circulating pump, described drum is arranged at described top of drying bed water beam, its water inlet is communicated with described baking bed water beam by lifting pipe, and its delivery port is communicated with described water beam of wind leading wall by down-flow pipe; Described circulating pump is arranged in parallel between described drum and described water beam of wind leading wall by down-flow pipe.
Being further defined to of technical solutions of the utility model: the two ends of described circulating pump are provided with circulation valve.
Further, also comprise the water-level gauge that is arranged at described inside steam drum.
Further, also comprise the pressure sensor that is arranged at described inside steam drum.
Further, also comprise the filling pipe being communicated with described drum, moisturizing valve is set on described filling pipe.
Further, also comprise the blow-off pipe being communicated with described drum, on described blow-off pipe, sewage draining valve is set.
The beneficial effects of the utility model are: the air guide wall for vetical furnace that the utility model provides and the evaporated cooling system of drying bed water beam, it is cooling to it that the mixing carbonated drink thing that water beam of wind leading wall is discharged seals in baking bed water beam, greatly extend the service life of drying bed water beam, not only saved valuable water resource, and dry steam that bed water beam produces and provide vapour source for palletizing shaft furnace cogeneration, realize energy recovery, vaporization cooling work is reliable, water-saving, non-scaling; And when thermic load increases, quantity of circulating water can be adjusted automatically, have a power failure in short-term, cut off the water (2 hours～3 hours) can not cause device damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the evaporated cooling system of air guide wall for vetical furnace of the present utility model and baking bed water beam.
The specific embodiment
embodiment 1
In order to solve above technical problem, the utility model provides air guide wall for vetical furnace and dries the evaporated cooling system of bed water beam, comprises water beam of wind leading wall 10, dries bed water beam 11, drum 12 and circulating pump 13.
Described water beam of wind leading wall 10 is arranged at described top of drying bed water beam 11, and is communicated with by lifting pipe 2, and annexation is herein prior art, and those skilled in the art can realize.
Described drum 12 is arranged at described top of drying bed water beam 11, the utility model improves drum position according to shaft furnace frame structure characteristic, the power of strengthening Natural Circulation, for example, if in common shaft furnace framework, the 10m place of drum 12 above baking bed water beam 11, the utility model is brought up to 20 ~ 30m by the height between drum 12 and baking bed water beam 11.The water inlet of described drum 12 is communicated with described baking bed water beam 11 by lifting pipe 2, and its delivery port is communicated with described water beam of wind leading wall 10 by down-flow pipe 1.
Meanwhile, described drum 12 inside arrange water-level gauge 7 and pressure sensor 8, pass to control system during by the gentle compacting of temperature in drum 12.Described drum 12 is also communicated with filling pipe 14, and on filling pipe 14, moisturizing valve is set, and in normal use procedure, moisturizing valve closing, when drum 12 internal water quantity not sufficient, opens moisturizing valve, to the inner supplementing water of drum 12.Described drum 12 is also communicated with blow-off pipe 3, on described blow-off pipe 3, sewage draining valve is set.In addition, described drum 12 also respectively with safety water pipe (4), diffuse water pipe (5) and go to secondary drum water pipe (6) and be communicated with.
Described circulating pump 13 is arranged in parallel between described drum 12 and described water beam of wind leading wall 10 by down-flow pipe 1, and at two ends, be provided with circulation valve 9, when low temperature blow-on, when drum temperature does not reach boiling point requirement, start forced circulation water pump, the water in forced system forms circulation.When drum 12 steam pressures are greater than 0.2MPa, by forced circulation, transfer Natural Circulation to, low temperature blow-on or in short-term blowing out (be generally furnace outage time and be greater than one hour) get final product ON cycle pump 1, take forced circulation, after normal, proceed to Natural Circulation, regularly blowdown in normal production.According to water level timing after softening water (automatically controlling), manual patrol and automatic monitoring water level are combined closely, and are strictly on guard against the normal operation of disturbing vaporization because of the fluctuation of water level, and drum pressure is stabilized in 0.45MPa-0.5MPa.
An operation principle for the evaporated cooling system of the air guide wall for vetical furnace that the utility model provides and baking bed water beam is: drum 12 cooling waters enter water beam of wind leading wall 10 through down-flow pipe 1, steam water interface enters a baking bed water beam 11 through lifting pipe 2 again and carries out cooling, carry out returning to drum 12 after secondary vaporizing, realize carbonated drink separation, simultaneously in down-flow pipe 1 parallel connection circulating pump 13 take forced circulation measure during in order to low temperature blow-on.In practical operation, avoid most to concentrate a large amount of cooling waters are added to drum, cause temperature in drum sharply to decline, destroy circulation, more difficult by the work of drum open ports, in passive state, reduce vapour and breathe heavily or oscillation phenomenon.
According to the principle of the cooling Natural Circulation power of vaporization: △ P=h * (r water-r mixed), in formula: △ P---Natural Circulation power (General Requirements drum pressure is at 0.4MPa), h---cooler (drying bed water beam, water beams) is to the vertical range of drum, the proportion of r water---water, r is mixed---steam water interface proportion.Wherein, the size of △ P determines two factors, and A, cooler are to the distance of drum; The proportion of B, water and vapour, aqueous mixtures.One kilogram of vapour leaves the heat that cooler is taken away: 550 kilocalories; One kg of water is left the heat that cooler is taken away: 20 kilocalories.
The thermic load of cooler is larger, and drum pressure is larger, and the work of system is more stable, and drum position is higher, and Natural Circulation power is larger, and velocity of medium is higher, can overcome larger SR.
In addition, in order to reduce resistance of pipe system, the utility model reduces elbow use and all elbows all adopt arc elbow.To the insulation of drum pipe network system, all exposed pipe fittings outside stove, by standard insulation, are reduced to pipe network system thermal loss.
The actual behaviour in service of evaporated cooling system Yong steel pelletizing plant of air guide wall for vetical furnace described in the utility model and baking bed water beam is: 1#, 2# shaft furnace are year May in September, 2009 to 2012, and totally two years 09 months, water beam of wind leading wall and baking bed water beam were all without abnormal so far.3#, 4# shaft furnace be respectively at putting into operation in June, 2010, July in May, 2012, totally one year 0 10 months.Water beam, still in the middle of using, is estimated to dry bed water beam and can be reached 3 years service life at present.After Drying Bed water beam adopts vaporization cooling, water beam of wind leading wall, a baking bed water beam are used and all can reach more than 2 years, substantially without abnormal, shaft furnace start-stop stove and normal in service without asthma oscillation phenomenon, not only effectively extended the service life of water beam, and to being extended the service life of air-guiding wall refractory material.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. air guide wall for vetical furnace and an evaporated cooling system of drying bed water beam, comprise water beam of wind leading wall (10) and dry bed water beam (11), described water beam of wind leading wall (10) is arranged at described below of drying bed water beam (11), and be communicated with by lifting pipe (2), it is characterized in that, also comprise drum (12) and circulating pump (13), described drum (12) is arranged at described top of drying bed water beam (11), its water inlet is communicated with described baking bed water beam (11) by lifting pipe (2), and its delivery port is communicated with described water beam of wind leading wall (10) by down-flow pipe (1); Described circulating pump (13) is arranged in parallel between described drum (12) and described water beam of wind leading wall (10) by down-flow pipe (1).
2. the evaporated cooling system of air guide wall for vetical furnace according to claim 1 and baking bed water beam, is characterized in that, the two ends of described circulating pump (13) are provided with circulation valve (9).
3. the evaporated cooling system of air guide wall for vetical furnace according to claim 1 and baking bed water beam, is characterized in that, also comprises and is arranged at the inner water-level gauge (7) of described drum (12).
4. the evaporated cooling system of air guide wall for vetical furnace according to claim 1 and baking bed water beam, is characterized in that, also comprises and is arranged at the inner pressure sensor (8) of described drum (12).
5. the evaporated cooling system of air guide wall for vetical furnace according to claim 1 and baking bed water beam, is characterized in that, also comprises the filling pipe (14) being communicated with described drum (12), and described filling pipe arranges moisturizing valve on (14).
6. the evaporated cooling system of air guide wall for vetical furnace according to claim 1 and baking bed water beam, is characterized in that, also comprises the blow-off pipe (3) being communicated with described drum (12), and described blow-off pipe arranges sewage draining valve on (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320342435.5U CN203478925U (en) | 2013-06-14 | 2013-06-14 | Drying bed and evaporated cooling system for water beams of shaft furnace wind-guiding wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320342435.5U CN203478925U (en) | 2013-06-14 | 2013-06-14 | Drying bed and evaporated cooling system for water beams of shaft furnace wind-guiding wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203478925U true CN203478925U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320342435.5U Expired - Lifetime CN203478925U (en) | 2013-06-14 | 2013-06-14 | Drying bed and evaporated cooling system for water beams of shaft furnace wind-guiding wall |
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| CN (1) | CN203478925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335512A (en) * | 2013-06-14 | 2013-10-02 | 江苏永钢集团有限公司 | Evaporated cooling system for shaft furnace air-guide wall and drying bed water beam |
-
2013
- 2013-06-14 CN CN201320342435.5U patent/CN203478925U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335512A (en) * | 2013-06-14 | 2013-10-02 | 江苏永钢集团有限公司 | Evaporated cooling system for shaft furnace air-guide wall and drying bed water beam |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |