CN103184299A - Heat recovery method and heat recovery device for slag flushing water of iron and steel plant - Google Patents
Heat recovery method and heat recovery device for slag flushing water of iron and steel plant Download PDFInfo
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- CN103184299A CN103184299A CN2012102769103A CN201210276910A CN103184299A CN 103184299 A CN103184299 A CN 103184299A CN 2012102769103 A CN2012102769103 A CN 2012102769103A CN 201210276910 A CN201210276910 A CN 201210276910A CN 103184299 A CN103184299 A CN 103184299A
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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
- Y02P10/20—Recycling
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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
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The invention provides a heat recovery method for slag flushing water of an iron and steel plant, which comprises the following steps: (1) the slag flushing water flows into a heat recovery device from a slag flushing water pool; (2) heating circulating water flows into the heat recovery device; and (3) in the heat recovery device, the high-temperature slag flushing water transfers heat to the low-temperature circulating water. The method is characterized in that the slag flushing water flows into the heat recovery device and is subjected to flash evaporation to generate steam; and the steam coagulates in the heating circulating water flowing into the heat recovery device, so that the temperature of the circulating water rises. The main structure of the heat recovery device for slag flushing water of the iron and steel plant, provided by the invention, comprises a slag flushing water radiator, a circulating water heat absorber, an air removing device, an anti-cavitation device and a water suction pump, wherein heat release and temperature reduction of the slag flushing water are realized in the slag flushing water radiator by virtue of flash evaporation; and heat absorption and temperature rise of the heating circulating water are realized in the circulating water heat absorber by virtue of steam condensation; the heat recovery device is characterized in that a steam channel of the slag flushing water is arranged between the slag flushing water radiator and the circulating water heat absorber; and the steam of the slag flushing water gets into the circulating water heat absorber to heat the heating circulating water.
Description
Technical field
The present invention relates to hot swapping, particularly relating to Steel Plant's flushing cinder hydro-thermal can recovery method and device.
Background technology
China has been the big country of Iron and Steel Production, and the annual production of iron and steel accounts for 40% of Gross World Product.No matter be steel-making or ironmaking, all will produce a large amount of slags.Slag is and the iron and steel generation of accompanying, it is the byproduct of smelting iron and steel, it is again the primary condition of a series of important metallurgical reactions, it participates in physical-chemical reaction and the mass-and heat-transfer process of steel smelting procedure directly, it not only has influence on iron and steel output, quality, and with the consumption of starting material, energy close relationship is arranged.
In the ferrous metallurgy stove, produce 1400-1500 ℃ high temperature furnace slag, after cinder notch flows out, when slag runner enters the flushing cinder chute, with certain water yield, hydraulic pressure and the chute gradient, make water become certain angle of cut with slag stream again, slag is subjected to cold shock, bursts into the qualified grain slag of certain particle size.After pulp water separated, slag was as material of construction; Flushing cinder water with high temperature furnace slag carries out heat exchange enters the flushing cinder pond.The flushing cinder pond is taken up an area of several thousand square metres usually; the hot vapour in top, flushing cinder pond soars; the flushing cinder water temp remains on 60-80 ℃ throughout the year; be a huge potential heat energy energy, if can be used effectively, such as utilize the heat energy of flushing cinder water; be the Residential areas heating winter; not only can be for country save a large amount of fuel, and reduced carbon emission, protected environment.
The heat energy of Steel Plant's flushing cinder water enough utilizes problem, also is not well solved so far.
Because flushing cinder water uses repeatedly, has dissolved into the plurality of inorganic salt and the oxide compound that contain in the slag in the flushing cinder water, having formed almost is saturated salt alkali aqueous solution.Burst in the grain slag process when slag is subjected to cold shock, some tiny slag enters in the water and suspends.Through actual detected, the flushing cinder water turbidity is 60-80mg/l.
Certain enterprise that heats, by recuperative heat exchanger, the heat transferred recirculated water with flushing cinder water utilizes recirculated water to heat to the Residential areas.Winter only, less than 4 months heating duration, the flushing cinder water side of recuperative heat exchanger, fouling reaches 3-5 centimetre, and the dirt layer is hard, and it is diffusing to fluff after the weathering.Think by analysis that the composition of flushing cinder water fouling in interchanger is the multiple inorganic salt that contain crystal water, for example contain the silicate of crystal water.The crystallization incrustation scale that flushing cinder water is hard is almost completely scrapped recuperative heat exchanger.
Someone attempts to have strainer to filter flushing cinder water, to solve flushing cinder water scaling problem on interchanger.Flushing cinder water is the salt buck of multiple composition, and for the salt buck, strainer is of no use fully.The salt buck can pass through any strainer smoothly, and has arrived interchanger inside, runs into cold interchanger wall, saline and alkaline water for cooling, supersaturation, crystallization on cold wall at once.
In the salt alkali aqueous solution, crystal formation process is called crystallization.The method of crystallization generally has two kinds: a kind of is the evaporating solvent method, and it is applicable to that temperature is to the little material of solubleness influence.The coastland produces and evaporates brine is exactly this method of utilizing.Another kind is the cooling heat saturated solution method, and this method is applicable to that temperature raises the material that solubleness also increases.As the salt lake of northern area, the summer temperature height, no crystal occurs on the lake surface; In every winter, temperature reduces, and crystal soda (Na2CO310H2O), saltcake materials such as (Na2SO410H2O) just separate out in the salt lake.The fouling of flushing cinder water just because of on the interchanger wall, has been cooled off saline and alkaline hydro-thermal saturated solution, the crystallization of generation.
In industrial or agricultural and people's lives, discharge various sewage.Sewage heat exchanger and common interchanger working conditions have very big difference, the method for design of common interchanger, and use experience can not be used for sewage heat exchanger.Although the method for design of common interchanger and manufacturing process are all very ripe,, the sewage heat exchanger science design method so far, does not also have fine solution.
Above-mentioned background technology about sewage heat exchanger and saline and alkaline water crystallization has a detailed description in following monograph:
1, Zhao Jun, the Dai Chuanshan chief editor, ground source heat pump technology and building energy conservation are used, Beijing: China Construction Industry Press, 2009.
2, (U.S.) salad, Sai Kulike work, Cheng Linyi, design of heat exchanger technology, Beijing: China Machine Press, 2010.
3, Xin Jian, the Wang Huilong chief editor, Advanced Inorganic Chemistry, Beijing: when higher education is published, 2010.
4, He Fengjiao chief editor, inorganic chemistry, Beijing: Science Press, 2007.
Summary of the invention
The present invention provides a kind of Steel Plant flushing cinder hydro-thermal energy recovery method, and it is made up of the following step:
(1) flushing cinder water flows into heat-energy recovering apparatus from the flushing cinder pond; (2) circulation water for heating flows into heat-energy recovering apparatus; (3) in heat-energy recovering apparatus, high temperature flushing cinder water is to the cold cycle heat transfer water; (4) circulation water for heating that has heated up flows out heat-energy recovering apparatus, to user's heat supply; The flushing cinder water of (5) having lowered the temperature flows out heat-energy recovering apparatus, returns the flushing cinder pond, the method is characterized in that: flushing cinder water flows into the heat-energy recovering apparatus flash distillation and produces steam, and vapor condenses heats up recirculated water in the circulation water for heating that flows into heat-energy recovering apparatus.
The present invention provides a kind of Steel Plant flushing cinder hydro-thermal energy retrieving arrangement, its primary structure comprises: flushing cinder water radiator, recirculated water heat absorber, deacration device, anti cavitation device and lift pump, flushing cinder water is lowered the temperature in the heat release of flushing cinder water radiator, the circulation water for heating intensification of in the recirculated water heat absorber, absorbing heat, the deacration device picks out from recirculated water heat absorber top, anti cavitation device is connected on the front of lift pump on the flushing cinder water radiator rising pipe, it is characterized in that:
(1) said flushing cinder water radiator is flushing cinder water flasher;
(2) said recirculated water heat absorber is carbonated drink contact recirculated water water-heater;
(3) its structure also comprises: in the middle of flushing cinder water radiator and recirculated water heat absorber, the vapour passage of a flushing cinder water is arranged.
The structure (one) of flushing cinder water radiator comprises: cylindrical shell, vapour passage, water inlet pipe, traverse baffle, the ponding chamber, water level sensor and rising pipe, flushing cinder water enters flushing cinder water radiator by water inlet pipe, tortuous passageway along multistage traverse baffle, flow downward step by step, flash distillation simultaneously produces steam, steam upwards enters the recirculated water heat absorber by vapour passage, remaining saturated flushing cinder water flows out from the rising pipe of bottom, in the flushing cinder water radiator, a water level sensor is arranged, the signal that it provides passes to the automatic regulating valve of water inlet pipe, and the control ponding chamber water surface is in the altitude range of regulation.
The structure (two) of flushing cinder water radiator comprises: cylindrical shell, vapour passage, water inlet pipe, water spraying tray, the ponding chamber, water level sensor and rising pipe, flushing cinder water enters flushing cinder water radiator by water inlet pipe, tortuous passageway along 1,100 leaking holes of multistage water spraying tray, unrestrained downwards step by step, flash distillation simultaneously produces steam, steam upwards enters the recirculated water heat absorber by vapour passage, remaining saturated flushing cinder water flows out from the rising pipe of bottom, in the flushing cinder water radiator, a water level sensor is arranged, the signal that it provides passes to the automatic regulating valve of water inlet pipe, and the control ponding chamber water surface is in the altitude range of regulation.
The structure (three) of flushing cinder water radiator comprises: cylindrical shell, vapour passage, water inlet pipe, water jet standpipe, the ponding chamber, water level sensor and rising pipe, flushing cinder water enters flushing cinder water radiator by water inlet pipe, from being close to circle round 1,100 spout holes of downward water jet standpipe of cylinder inboard wall, the fierce injection to the inner barrel space, flash distillation simultaneously produces steam, steam upwards enters the recirculated water heat absorber by vapour passage, remaining saturated flushing cinder water flows out from the rising pipe of bottom, in the flushing cinder water radiator, a water level sensor is arranged, the signal that it provides passes to the automatic regulating valve of water inlet pipe, and the control ponding chamber water surface is in the altitude range of regulation.
The structure of recirculated water heat absorber (one) comprising: cylindrical shell, effuser, water inlet pipe, traverse baffle, water deflector cover, water level sensor and rising pipe, recirculated water enters the recirculated water heat absorber from water inlet pipe, tortuous passageway along multistage traverse baffle, trickling downwards step by step, the flushing cinder water vapor of coming in from the bottom steam passage, get around water deflector cover, ascension from bottom to top, the two meets in recirculated water heat absorber internal space, steam is dissolved in undersaturated recirculated water, improved circulating water temperature, last recirculated water flows out by rising pipe, and a water level sensor is arranged at the cylindrical shell bottom, water level signal passes to the automatic regulating valve on the water inlet pipe, in specialized range, the noncondensable gas of accumulation in the recirculated water heat absorber cylindrical shell is discharged in the atmosphere through effuser with control ponding chamber, cylindrical shell bottom water level.
The structure of recirculated water heat absorber (two) comprising: cylindrical shell, effuser, water inlet pipe, water spraying tray, water deflector cover, water level sensor and rising pipe, recirculated water enters the recirculated water heat absorber from water inlet pipe, 1,100 leaking holes along multistage water spraying tray are unrestrained downwards, the flushing cinder water vapor of coming in from the bottom steam passage, get around water deflector cover, ascension from bottom to top, the two meets in recirculated water heat absorber internal space, steam is dissolved in undersaturated recirculated water, improved circulating water temperature, last recirculated water flows out by rising pipe, a water level sensor is arranged at the cylindrical shell bottom, and water level signal passes to the automatic regulating valve on the water inlet pipe, to control ponding chamber, cylindrical shell bottom water level in specialized range, the noncondensable gas of accumulation in the recirculated water heat absorber cylindrical shell is discharged in the atmosphere through effuser.
The structure of recirculated water heat absorber (three) comprising: cylindrical shell, effuser, water inlet pipe, water jet standpipe, water deflector cover, water level sensor and rising pipe, recirculated water enters the recirculated water heat absorber from water inlet pipe, from being close to circle round 1,100 spout holes of downward water jet standpipe of cylinder inboard wall, the fierce injection to the inner barrel space, the flushing cinder water vapor of coming in from the bottom steam passage, get around water deflector cover, ascension from bottom to top, the two meets in recirculated water heat absorber internal space, steam is dissolved in undersaturated recirculated water, improved circulating water temperature, last recirculated water flows out by rising pipe, and a water level sensor is arranged at the cylindrical shell bottom, water level signal passes to the automatic regulating valve on the water inlet pipe, in specialized range, the noncondensable gas of accumulation in the recirculated water heat absorber cylindrical shell is discharged in the atmosphere through effuser with control ponding chamber, cylindrical shell bottom water level.
The structure of deacration device comprises: air collector, reverse checkvalve, vacuum pump, temperature sensor and controller, the air collector of deacration device passes through effuser, be connected the top of recirculated water heat absorber, the escape pipe of air collector connects vacuum pump, reverse checkvalve is arranged before the vacuum pump, vacuum pump is extracted the noncondensable gas in the system that comprises flushing cinder water radiator and recirculated water heat absorber out, the switching of vacuum pump is controlled by the controller, controller is gathered the numerical value of the temperature sensor on air collector and the recirculated water heat absorber at any time, when both temperature difference during greater than prescribed value, just start vacuum pump, stop without temperature difference.
The structure of anti cavitation device comprises: cooling pond, water inlet pipe, rising pipe, automatic regulating valve, temperature sensor and lift pump, the saturated flushing cinder water of flushing cinder water radiator flows out from water shoot, mix with the cold water that comes from the cooling pond rising pipe, cooling becomes unsaturated water, extract out through lift pump again, on the rising pipe of cooling pond, automatic regulating valve is arranged, 2 temperature sensor signal on its collection water shoot, automatically regulate the cool water pipe flow area, flushing cinder water is before entering lift pump in the control water shoot, and 3-5 ℃ of blending cold water cooling guarantees that flushing cinder water lift pump does not produce cavitation.
Description of drawings
Fig. 1 is the basic step figure of Steel Plant of the present invention flushing cinder hydro-thermal energy recovery method;
Fig. 2 is the overall construction drawing of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Fig. 3 is the flushing cinder water radiator structure () of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Fig. 4 is the flushing cinder water radiator structure (two) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Fig. 5 is the flushing cinder water radiator structure (three) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Fig. 6 is the recirculated water heat absorber structure () of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Fig. 7 is the recirculated water heat absorber structure (two) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Fig. 8 is the recirculated water heat absorber structure (three) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Fig. 9 is the deacration structure drawing of device of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention;
Figure 10 is the anti cavitation device structure iron of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Fig. 1 has provided the basic step figure of Steel Plant of the present invention flushing cinder hydro-thermal energy recovery method.
The basic step of Steel Plant's flushing cinder hydro-thermal energy recovery method is:
1, the hot flushing cinder water in flushing cinder pond 5 enters flushing cinder water radiator 30 by flushing cinder water radiator inlet channel, at flushing cinder water radiator inlet channel into water variable valve 31 is arranged.
2, the pressure in the flushing cinder water radiator 30 is lower than the saturation pressure of the hot flushing cinder water temp of import correspondence, so flushing cinder water partly evaporates after entering flushing cinder water radiator at once, being also referred to as is flash distillation or dilatation.
3, the steam that produces in the flushing cinder water radiator 30 by steam conveying pipe, enters recirculated water heat absorber 20.
4, remaining saturated flushing cinder water in the flushing cinder water radiator 30, the water shoot outflow from the bottom mixes with the part cold water of cooling pond 40, becomes unsaturated water, discharges through lift pump 45, and sends the flushing cinder pond back to.On the rising pipe of cooling pond 40, variable valve 41 is arranged.
5, heating recirculated water enters the recirculated water heat absorber by recirculated water heat absorber water inlet pipe from recirculated water heat absorber 20 tops.Into water variable valve 21 is arranged on the recirculated water heat absorber water inlet pipe.
6, in recirculated water heat absorber 20, heating recirculated water sprays downwards from top, and the flushing cinder water vapor ascension from bottom to top of coming in from the bottom, the two meets in recirculated water heat absorber internal space, and closely contact, steam is dissolved in undersaturated recirculated water rapidly, and the heat of steam has improved circulating water temperature.
7, the heating recirculated water that has been heated in recirculated water heat absorber 20 flows out by recirculated water heat absorber rising pipe, on the recirculated water heat absorber rising pipe lift pump 46 is arranged.
8, above recirculated water heat absorber 20, an air collector 10 and vacuum pump 12 are arranged, constantly extract the noncondensable gas in the system that comprises flushing cinder water radiator and recirculated water heat absorber out, it mainly is exactly the gas dissolved that flushing cinder water and recirculated water are separated out, and leaked-in air in the system, thereby can guarantee intrasystem vacuum tightness.
Fig. 2 has provided the overall construction drawing of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
The flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention is divided into four parts: flushing cinder water radiator, recirculated water heat absorber, deacration device and anti cavitation device generally.
Recirculated water heat absorber 20 is seated in flushing cinder water radiator 30 tops, and the two is in same pressurized vessel, and the deacration device picks out from recirculated water heat absorber top, and the rising pipe of anti cavitation device and flushing cinder water radiator 30 joins.
Hot flushing cinder water enters flushing cinder water radiator 30 by flushing cinder water radiator inlet channel, at flushing cinder water radiator inlet channel into water variable valve 31 is arranged.Pressure in the flushing cinder water radiator 30 is lower than the saturation pressure of the hot flushing cinder water temp of import correspondence, so flushing cinder water evaporates after entering flushing cinder water radiator at once.The steam of flushing cinder water generates by steam-pipe 34, enters recirculated water heat absorber 20.There is a water deflector cover 24 top of steam-pipe 34, and water deflector cover 24 can prevent that the recirculated water of recirculated water heat absorber space drippage from can not fall into flushing cinder water radiator, and flushing cinder water radiator is unaffected to recirculated water heat absorber delivering vapor.
Remaining saturated flushing cinder water in the flushing cinder water radiator 30, the water shoot outflow from the bottom mixes with the part cold water of cooling pond 40, becomes unsaturated water, discharges through lift pump 45, and sends the flushing cinder pond back to.On the rising pipe of cooling pond 40, variable valve 41 is arranged, and it is subjected to temperature sensor 42,43 controls, variable valve 41 control cool water pipe flow areas, guarantee that the flushing cinder water temperature scope of falling that temperature sensor 42,43 records is 3-5 ℃, can guarantee that flushing cinder water lift pump 45 does not produce cavitation.
In the flushing cinder water radiator 30, a water level sensor 33 is arranged, the signal that it provides is used for the water inlet variable valve 31 of control flushing cinder water radiator, guarantees that the ponding water surface is in the altitude range of regulation in flushing cinder water radiator.
Recirculated water heat absorber 20 is above flushing cinder water radiator 30, and the steam that flushing cinder water radiator 30 produces enters recirculated water heat absorber 20 by vapour passage 34.There is a heating circulating water inlet top of recirculated water heat absorber 20, water inlet variable valve 21 are arranged on the circulating water inlet, water inlet variable valve 21 are subjected to the control of the water level sensor 23 in the recirculated water heat absorber, to guarantee that water accumulation level in the recirculated water heat absorber is in specialized range.
Recirculated water sprays in recirculated water heat absorber 20 from top to bottom, and the flushing cinder water vapor ascension from bottom to top of coming in from the bottom, the two meets in recirculated water heat absorber internal space, and closely contact, steam is dissolved in undersaturated recirculated water rapidly, and the heat of steam has improved circulating water temperature.The heating recirculated water that has been heated in recirculated water heat absorber 20 flows out by recirculated water heat absorber rising pipe, on the recirculated water heat absorber rising pipe lift pump 46 is arranged.
Above recirculated water heat absorber 20, an air collector 10 and vacuum pump 12 are arranged, constantly extract the noncondensable gas in the system that comprises flushing cinder water radiator and recirculated water heat absorber out, it mainly is exactly the gas dissolved that flushing cinder water and recirculated water are separated out, and leaked-in air in the system, thereby can guarantee intrasystem vacuum tightness.
Fig. 3 has provided the flushing cinder water radiator structure () of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
The flushing cinder water radiator 30 of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention, its profile is a pressurized vessel that stands up, and its structure comprises: cylindrical shell, vapour passage 34, water inlet pipe 36, traverse baffle 39, ponding chamber 38, water level sensor 33 and rising pipe 37.
Hot flushing cinder water enters flushing cinder water radiator 30 by flushing cinder water radiator water inlet pipe 36, at flushing cinder water radiator water inlet pipe into water variable valve is arranged.After hot flushing cinder water enters flushing cinder water radiator 30, along the tortuous passageway of multistage traverse baffle 39, landing downwards step by step.Pressure in the flushing cinder water radiator 30 is lower than the saturation pressure of the hot flushing cinder water temp of import correspondence, so flushing cinder water evaporates after entering flushing cinder water radiator at once.The steam of flushing cinder water generates by steam-pipe 34, upwards enters the recirculated water heat absorber.There is a water deflector cover top of steam-pipe 34, and water deflector cover can prevent that the recirculated water of recirculated water heat absorber space drippage from can not fall into flushing cinder water radiator, and flushing cinder water radiator is unaffected to recirculated water heat absorber delivering vapor.
Remaining saturated flushing cinder water in the flushing cinder water radiator 30, water shoot 37 outflows from the bottom mix with the part cold water of cooling pond, become unsaturated water, discharge through lift pump, and send the flushing cinder pond back to.
In the flushing cinder water radiator 30, a water level sensor 33 is arranged, the signal that it provides is used for the water inlet automatic regulating valve of control flushing cinder water radiator, guarantees at flushing cinder water radiator inner product hydroecium 38 waters surface in the altitude range of regulation
Fig. 4 has provided the flushing cinder water radiator structure (two) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
The flushing cinder water radiator 30 of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention, its profile is a pressurized vessel that stands up, and its structure comprises: cylindrical shell, vapour passage 34, water inlet pipe 36, water spraying tray 32, ponding chamber 38, water level sensor 33 and rising pipe 37.
Hot flushing cinder water enters flushing cinder water radiator 30 by flushing cinder water radiator water inlet pipe 36, at flushing cinder water radiator water inlet pipe into water variable valve is arranged.After hot flushing cinder water enters flushing cinder water radiator 30, unrestrained downwards step by step along the tortuous passageway of 32,000 hundred leaking holes of multistage water spraying tray, very big surface-area can be arranged.Pressure in the flushing cinder water radiator 30 is lower than the saturation pressure of the hot flushing cinder water temp of import correspondence, so flushing cinder water evaporates after entering flushing cinder water radiator at once.The steam of flushing cinder water generates by steam-pipe 34, upwards enters the recirculated water heat absorber.There is a water deflector cover top of steam-pipe 34, and water deflector cover can prevent that the recirculated water of recirculated water heat absorber space drippage from can not fall into flushing cinder water radiator, and flushing cinder water radiator is unaffected to recirculated water heat absorber delivering vapor.
Remaining saturated flushing cinder water in the flushing cinder water radiator 30, water shoot 37 outflows from the bottom mix with the part cold water of cooling pond, become unsaturated water, discharge through lift pump, and send the flushing cinder pond back to.
In the flushing cinder water radiator 30, a water level sensor 33 is arranged, the signal that it provides is used for the water inlet automatic regulating valve of control flushing cinder water radiator, guarantees at flushing cinder water radiator inner product hydroecium 38 waters surface in the altitude range of regulation
Fig. 5 has provided the flushing cinder water radiator structure (three) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
The flushing cinder water radiator 30 of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention, its profile is a pressurized vessel that stands up, and its structure comprises: cylindrical shell, vapour passage 34, water inlet pipe 36, water jet standpipe 35, ponding chamber 38, water level sensor 33 and rising pipe 37.
Hot flushing cinder water enters flushing cinder water radiator 30 by flushing cinder water radiator water inlet pipe 36, at flushing cinder water radiator water inlet pipe into water variable valve is arranged.Hot flushing cinder water enters flushing cinder water radiator 30, along being close to flushing cinder water radiator cylinder inboard wall, 1,100 spout holes of downward water jet standpipe 35 circle round, the fierce injection to the inner barrel space, article 1,100, water column is woven into the network of rivers, a space in flushing cinder water radiator internal space, and unrestrained downwards, very big surface-area can be arranged.Pressure in the flushing cinder water radiator 30 is lower than the saturation pressure of the hot flushing cinder water temp of import correspondence, so flushing cinder water evaporates after entering flushing cinder water radiator at once.The steam of flushing cinder water generates by steam-pipe 34, upwards enters the recirculated water heat absorber.There is a water deflector cover top of steam-pipe 34, and water deflector cover can prevent that the recirculated water of recirculated water heat absorber space drippage from can not fall into flushing cinder water radiator, and flushing cinder water radiator is unaffected to recirculated water heat absorber delivering vapor.
Remaining saturated flushing cinder water in the flushing cinder water radiator 30, water shoot 37 outflows from the bottom mix with the part cold water of cooling pond, become unsaturated water, discharge through lift pump, and send the flushing cinder pond back to.
In the flushing cinder water radiator 30, a water level sensor 33 is arranged, the signal that it provides is used for the water inlet automatic regulating valve of control flushing cinder water radiator, guarantees at flushing cinder water radiator inner product hydroecium 38 waters surface in the altitude range of regulation
Fig. 6 has provided the recirculated water heat absorber structure () of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
The recirculated water heat absorber structure of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention, its profile is a pressurized vessel, and its structure comprises: cylindrical shell, effuser 22, water inlet pipe 26, traverse baffle 25, water deflector cover 24, water level sensor 23 and rising pipe 27.
Recirculated water heat absorber 20 is above flushing cinder water radiator, and the steam that flushing cinder water radiator produces by vapour passage 34, is walked around vapour passage lid 24, enters recirculated water heat absorber 20.There is heating circulating water inlet 26 top of recirculated water heat absorber 20, a water inlet automatic regulating valve is arranged on the circulating water inlet, the water inlet automatic regulating valve is subjected to the control of the water level sensor 23 in the recirculated water heat absorber, to guarantee that ponding chamber water level in the recirculated water heat absorber is in specialized range.
Recirculated water enters recirculated water heat absorber 20, tortuous passageway along multistage traverse baffle 25, trickling is sprayed downwards at traverse baffles at different levels 25 edges as the similar waterfall from top to bottom step by step, and the flushing cinder water vapor that comes from bottom vapour passage 34, get around water deflector cover 24, ascension from bottom to top, the two meets in recirculated water heat absorber internal space, and closely contact, steam is dissolved in undersaturated recirculated water rapidly, and the heat of steam has improved circulating water temperature.
The heating recirculated water that has been heated in recirculated water heat absorber 20 falls into the ponding chamber at last, flows out by recirculated water heat absorber sidewall rising pipe 27, on the recirculated water heat absorber rising pipe lift pump is arranged.The noncondensable gas of accumulation in the recirculated water heat absorber 20 through effuser 22, is extracted out by vacuum pump, is discharged in the atmosphere.
Fig. 7 has provided the recirculated water heat absorber structure (two) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
The recirculated water heat absorber structure of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention, its profile is a pressurized vessel, and its structure comprises: cylindrical shell, effuser 22, water inlet pipe 26, water spraying tray 28, water deflector cover 24, water level sensor 23 and rising pipe 27.
Recirculated water heat absorber 20 is above flushing cinder water radiator, and the steam that flushing cinder water radiator produces by vapour passage 34, is walked around water deflector cover 24, enters recirculated water heat absorber 20.There is heating circulating water inlet 26 top of recirculated water heat absorber 20, a water inlet automatic regulating valve is arranged on the circulating water inlet, the water inlet automatic regulating valve is subjected to the control of the water level sensor 23 in the recirculated water heat absorber, to guarantee that ponding chamber water level in the recirculated water heat absorber is in specialized range.
Recirculated water enters recirculated water heat absorber 20, and is unrestrained downwards as the heavy rain step by step along the tortuous passageway of 1,100 leaking holes of multistage water spraying tray 28, and very big surface-area can be arranged.The steam of flushing cinder water generates by steam-pipe 34, upwards enters the recirculated water heat absorber.There is a water deflector cover 24 top of steam-pipe 34, and water deflector cover 24 can prevent that the recirculated water of recirculated water heat absorber space drippage from falling into flushing cinder water radiator, and flushing cinder water radiator is unaffected to recirculated water heat absorber delivering vapor.
From the flushing cinder water vapor that bottom vapour passage 34 comes, ascension from bottom to top is with unrestrained downwards recirculated water, meet in the reverse convection current in recirculated water heat absorber internal space, and closely contact, steam is dissolved in undersaturated recirculated water rapidly, and the heat of steam has improved circulating water temperature.
The heating recirculated water that has been heated in recirculated water heat absorber 20 falls into the ponding chamber at last, flows out by recirculated water heat absorber sidewall rising pipe 27, on the recirculated water heat absorber rising pipe lift pump is arranged.The noncondensable gas of accumulation in the recirculated water heat absorber 20 through effuser 22, is extracted out by vacuum pump, is discharged in the atmosphere.
Fig. 8 has provided the recirculated water heat absorber structure (three) of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
The recirculated water heat absorber structure of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention, its profile is a pressurized vessel, and its structure comprises: cylindrical shell, effuser 22, water inlet pipe 26, water jet standpipe 29, water deflector cover 24, water level sensor 23 and rising pipe 27.
Recirculated water heat absorber 20 is above flushing cinder water radiator, and the steam that flushing cinder water radiator produces by vapour passage 34, is walked around water deflector cover 24, enters recirculated water heat absorber 20.There is heating circulating water inlet 26 top of recirculated water heat absorber 20, a water inlet automatic regulating valve is arranged on the circulating water inlet, the water inlet automatic regulating valve is subjected to the control of the water level sensor 23 in the recirculated water heat absorber, to guarantee that ponding chamber water level in the recirculated water heat absorber is in specialized range.
Recirculated water enters recirculated water heat absorber 20, from being close to circle round 1,100 spout holes of downward water jet standpipe 29 of cylinder inboard wall, the fierce injection to the inner barrel space, article 1,100, water column is woven into a dense network of rivers, space in recirculated water heat absorber internal space, as violent storm, trickle down downwards, very big surface-area can be arranged.The steam of flushing cinder water generates by steam-pipe 34, upwards enters the recirculated water heat absorber.There is a water deflector cover 24 top of steam-pipe 34, and water deflector cover 24 can prevent that the recirculated water of recirculated water heat absorber space drippage from falling into flushing cinder water radiator, and flushing cinder water radiator is unaffected to recirculated water heat absorber delivering vapor.
From the flushing cinder water vapor that bottom vapour passage 34 comes, ascension from bottom to top is with unrestrained downwards recirculated water, meet in the reverse convection current in recirculated water heat absorber internal space, and closely contact, steam is dissolved in undersaturated recirculated water rapidly, and the heat of steam has improved circulating water temperature.
The heating recirculated water that has been heated in recirculated water heat absorber 20 falls into the ponding chamber at last, flows out by recirculated water heat absorber sidewall rising pipe 27, on the recirculated water heat absorber rising pipe lift pump is arranged.The noncondensable gas of accumulation in the recirculated water heat absorber 20 through effuser 22, is extracted out by vacuum pump, is discharged in the atmosphere.
Fig. 9 has provided the deacration structure drawing of device of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
Steel Plant of the present invention flushing cinder hydro-thermals can retrieving arrangement embodiment the deacration device comprise: air collector 10, reverse checkvalve 11, vacuum pump 12, temperature sensor 14,15 and controller 16.
Above recirculated water heat absorber 20, connect air collector 10 by effuser 22, the escape pipe of air collector 10 connects vacuum pump 12, constantly extract the noncondensable gas in the system that comprises flushing cinder water radiator and recirculated water heat absorber out, it mainly is exactly the gas dissolved that flushing cinder water and recirculated water are separated out, and leaked-in air in the system, thereby can guarantee intrasystem vacuum tightness.
Figure 10 has provided the anti cavitation device structure iron of the flushing cinder hydro-thermal energy retrieving arrangement embodiment of Steel Plant of the present invention.
Steel Plant of the present invention flushing cinder hydro-thermals can retrieving arrangement embodiment anti cavitation device comprise: cooling pond 40, cooling pond water inlet pipe 47, cooling pond rising pipe, automatic regulating valve 41, temperature sensor 42,43 and flushing cinder water radiator lift pump 45.
Remaining saturated flushing cinder water in the flushing cinder water radiator 30 flow out from the water shoot 37 of bottom, mix with part cold water from cooling pond 40, and cooling becomes unsaturated water, again through lift pump 45 discharges, and sends the flushing cinder pond back to.On the rising pipe of cooling pond 40, automatic regulating valve 41 is arranged, and its collecting temperature sensor 42,43 temperature signal are regulated the cool water pipe flow area automatically, the flushing cinder water temperature scope of falling that guarantees temperature sensor 42,43 measuring points is 3-5 ℃, can guarantee that flushing cinder water lift pump 45 does not produce cavitation.
Claims (10)
1. a Steel Plant flushing cinder hydro-thermal can recovery method, and it is made up of the following step:
(1) flushing cinder water flows into heat-energy recovering apparatus from the flushing cinder pond; (2) circulation water for heating flows into heat-energy recovering apparatus; (3) in heat-energy recovering apparatus, high temperature flushing cinder water is to the cold cycle heat transfer water; (4) circulation water for heating that has heated up flows out heat-energy recovering apparatus, to user's heat supply; The flushing cinder water of (5) having lowered the temperature flows out heat-energy recovering apparatus, returns the flushing cinder pond, the method is characterized in that: flushing cinder water flows into the heat-energy recovering apparatus flash distillation and produces steam, and vapor condenses heats up recirculated water in the circulation water for heating that flows into heat-energy recovering apparatus.
2. a Steel Plant flushing cinder hydro-thermal can retrieving arrangement, its primary structure comprises: flushing cinder water radiator, recirculated water heat absorber, deacration device, anti cavitation device and lift pump, flushing cinder water is lowered the temperature in the heat release of flushing cinder water radiator, the circulation water for heating intensification of in the recirculated water heat absorber, absorbing heat, the deacration device picks out from recirculated water heat absorber top, anti cavitation device is connected on the front of lift pump on the flushing cinder water radiator rising pipe, it is characterized in that:
(1) said flushing cinder water radiator is flushing cinder water flasher;
(2) said recirculated water heat absorber is carbonated drink contact recirculated water water-heater;
(3) its structure also comprises: in the middle of flushing cinder water radiator and recirculated water heat absorber, the vapour passage of a flushing cinder water is arranged.
3. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described flushing cinder water radiator comprises: cylindrical shell, vapour passage, water inlet pipe, traverse baffle, the ponding chamber, water level sensor and rising pipe, flushing cinder water enters flushing cinder water radiator by water inlet pipe, tortuous passageway along multistage traverse baffle, flow downward step by step, flash distillation simultaneously produces steam, steam upwards enters the recirculated water heat absorber by vapour passage, remaining saturated flushing cinder water flows out from the rising pipe of bottom, in the flushing cinder water radiator, a water level sensor is arranged, the signal that it provides passes to the automatic regulating valve of water inlet pipe, and the control ponding chamber water surface is in the altitude range of regulation.
4. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described flushing cinder water radiator comprises: cylindrical shell, vapour passage, water inlet pipe, water spraying tray, the ponding chamber, water level sensor and rising pipe, flushing cinder water enters flushing cinder water radiator by water inlet pipe, tortuous passageway along 1,100 leaking holes of multistage water spraying tray, unrestrained downwards step by step, flash distillation simultaneously produces steam, steam upwards enters the recirculated water heat absorber by vapour passage, remaining saturated flushing cinder water flows out from the rising pipe of bottom, in the flushing cinder water radiator, a water level sensor is arranged, the signal that it provides passes to the automatic regulating valve of water inlet pipe, and the control ponding chamber water surface is in the altitude range of regulation.
5. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described flushing cinder water radiator comprises: cylindrical shell, vapour passage, water inlet pipe, water jet standpipe, the ponding chamber, water level sensor and rising pipe, flushing cinder water enters flushing cinder water radiator by water inlet pipe, from being close to circle round 1,100 spout holes of downward water jet standpipe of cylinder inboard wall, the fierce injection to the inner barrel space, flash distillation simultaneously produces steam, steam upwards enters the recirculated water heat absorber by vapour passage, remaining saturated flushing cinder water flows out from the rising pipe of bottom, in the flushing cinder water radiator, a water level sensor is arranged, the signal that it provides passes to the automatic regulating valve of water inlet pipe, and the control ponding chamber water surface is in the altitude range of regulation.
6. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described recirculated water heat absorber comprises: cylindrical shell, effuser, water inlet pipe, traverse baffle, water deflector cover, water level sensor and rising pipe, recirculated water enters the recirculated water heat absorber from water inlet pipe, tortuous passageway along multistage traverse baffle, trickling downwards step by step, the flushing cinder water vapor of coming in from the bottom steam passage, get around water deflector cover, ascension from bottom to top, the two meets in recirculated water heat absorber internal space, steam is dissolved in undersaturated recirculated water, improved circulating water temperature, last recirculated water flows out by rising pipe, a water level sensor is arranged at the cylindrical shell bottom, and water level signal passes to the automatic regulating valve on the water inlet pipe, to control ponding chamber, cylindrical shell bottom water level in specialized range, the noncondensable gas of accumulation in the recirculated water heat absorber cylindrical shell is discharged in the atmosphere through effuser.
7. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described recirculated water heat absorber comprises: cylindrical shell, effuser, water inlet pipe, water spraying tray, water deflector cover, water level sensor and rising pipe, recirculated water enters the recirculated water heat absorber from water inlet pipe, 1,100 leaking holes along multistage water spraying tray are unrestrained downwards, the flushing cinder water vapor of coming in from the bottom steam passage, get around water deflector cover, ascension from bottom to top, the two meets in recirculated water heat absorber internal space, steam is dissolved in undersaturated recirculated water, improved circulating water temperature, last recirculated water flows out by rising pipe, a water level sensor is arranged at the cylindrical shell bottom, water level signal passes to the automatic regulating valve on the water inlet pipe, in specialized range, the noncondensable gas of accumulation in the recirculated water heat absorber cylindrical shell is discharged in the atmosphere through effuser with control ponding chamber, cylindrical shell bottom water level.
8. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described recirculated water heat absorber comprises: cylindrical shell, effuser, water inlet pipe, water jet standpipe, water deflector cover, water level sensor and rising pipe, recirculated water enters the recirculated water heat absorber from water inlet pipe, from being close to circle round 1,100 spout holes of downward water jet standpipe of cylinder inboard wall, the fierce injection to the inner barrel space, the flushing cinder water vapor of coming in from the bottom steam passage, get around water deflector cover, ascension from bottom to top, the two meets in recirculated water heat absorber internal space, steam is dissolved in undersaturated recirculated water, improved circulating water temperature, last recirculated water flows out by rising pipe, a water level sensor is arranged at the cylindrical shell bottom, and water level signal passes to the automatic regulating valve on the water inlet pipe, to control ponding chamber, cylindrical shell bottom water level in specialized range, the noncondensable gas of accumulation in the recirculated water heat absorber cylindrical shell is discharged in the atmosphere through effuser.
9. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described deacration device comprises: air collector, reverse checkvalve, vacuum pump, temperature sensor and controller, the air collector of deacration device passes through effuser, be connected the top of recirculated water heat absorber, the escape pipe of air collector connects vacuum pump, reverse checkvalve is arranged before the vacuum pump, vacuum pump is extracted the noncondensable gas in the system that comprises flushing cinder water radiator and recirculated water heat absorber out, the switching of vacuum pump is controlled by the controller, controller is gathered the numerical value of the temperature sensor on air collector and the recirculated water heat absorber at any time, when both temperature difference during greater than prescribed value, just start vacuum pump, stop without temperature difference.
10. according to the described Steel Plant of claim 2 flushing cinder hydro-thermal energy retrieving arrangement, it is characterized in that: the structure of described anti cavitation device comprises: cooling pond, water inlet pipe, rising pipe, automatic regulating valve, temperature sensor and lift pump, the saturated flushing cinder water of flushing cinder water radiator flows out from water shoot, mix with the cold water that comes from the cooling pond rising pipe, cooling becomes unsaturated water, extract out through lift pump again, on the rising pipe of cooling pond, automatic regulating valve is arranged, 2 temperature sensor signal on its collection water shoot, automatically regulate the cool water pipe flow area, flushing cinder water is before entering lift pump in the control water shoot, 3-5 ℃ of blending cold water cooling guarantees that flushing cinder water lift pump does not produce cavitation.
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| CN201210276910.3A CN103184299B (en) | 2012-07-26 | 2012-07-26 | Heat recovery method and heat recovery device for slag flushing water of iron and steel plant |
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| CN201210276910.3A CN103184299B (en) | 2012-07-26 | 2012-07-26 | Heat recovery method and heat recovery device for slag flushing water of iron and steel plant |
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| CN109987663A (en) * | 2017-12-29 | 2019-07-09 | 众和海水淡化工程有限公司 | A kind of low-temperature water heating flash distillation plant and flash evaporation |
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Denomination of invention: Heat recovery method and device of slag flushing water in iron and steel plant Effective date of registration: 20210622 Granted publication date: 20150121 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: HIT (HARBIN INSTITUTE OF TECHNOLOGY) KINT TECHNOLOGY Co.,Ltd. Registration number: Y2021230000010 |
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Date of cancellation: 20220629 Granted publication date: 20150121 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: HIT (HARBIN INSTITUTE OF TECHNOLOGY) KINT TECHNOLOGY Co.,Ltd. Registration number: Y2021230000010 |