CN109457070A - Blast furnace grain slag process steam disappears and heat recovery system - Google Patents
Blast furnace grain slag process steam disappears and heat recovery system Download PDFInfo
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- CN109457070A CN109457070A CN201811610070.3A CN201811610070A CN109457070A CN 109457070 A CN109457070 A CN 109457070A CN 201811610070 A CN201811610070 A CN 201811610070A CN 109457070 A CN109457070 A CN 109457070A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a steam elimination and heat energy recovery system for a blast furnace granulated slag process, which comprises a granulation tower (1), a chimney (7), a filter tank (43), a hot water heat exchange unit, a cooling tower (44) and a water storage tank (45) which are sequentially connected in series, wherein a first steam heat exchanger (13) is connected outside the filter tank (43), and the top of the filter tank (43) is provided with a movable steam cover (16). The steam eliminating and heat energy recovery system for the blast furnace granulated slag process can fully recover steam heat energy in the granulation process, can also recover heat energy of slag flushing water and steam of the filter tank, simultaneously reduces the workload of the cooling tower, can also reduce the emission of sulfur-containing steam in the slag treatment process, and really realizes energy conservation, emission reduction and effective cyclic utilization of energy.
Description
Technical field
The present invention relates to metallurgy industry smelt iron field, particularly a kind of blast furnace granulated slag process steam disappear bletilla thermal energy recycling
System.
Background technique
It can be generated when blast furnace process high-temperature liquid state slag (1350 DEG C -1500 DEG C), domestic annual 700000000 tons of molten iron of production produces
Raw 2.5 hundred million tons of high-temperature liquid state slag.The correlative study of many years has been carried out both at home and abroad, it is desirable to blast furnace cinder heat is made full use of,
Realize heat recovery.
Chinese patent CN106282445B, 2017 publication date January 4 disclose a kind of " recycling blast furnace slag waste heat
Device and recovery method ", this method are mixed with high-temperature liquid state slag using metal ball, obtain 500 DEG C~800 DEG C blast furnace slag and
The solid mixt of metal ball, mixture complete the recycling of broken apart and waste heat by rotating metallic cage, and this method obtains molten
Slag fragment is difficult to realize to be recycled, and the solid mixt of 500 DEG C~800 DEG C of blast furnace slag and metal ball is in rotating metallic cage
Complete broken apart, very serious to the abrasion meeting of metal cage under the condition of high temperature, the operation to equipment life and whole system
Rate can be generated and be seriously affected.
Precipitating filtration method (often claiming bottom filter method) grain slag technique is generallyd use both at home and abroad to handle slag.State of Blast Furnace is advanced
Row hydraulic discharged slag after being smashed slag with water quenching, becomes loose slag-water slurry (often claiming grain slag), grain slag enters through sluice
Filtering ponds, liquid water are filtered through the filtering layer in filtering ponds, are left solid wet slag particle in filtering bottom of pond portion, are then passed through bridge
Formula grab bucket crane grabs slag particle, entrucking is transported outward.Slag particle (partial size 0.2mm~3mm) purposes obtained after water quenching is wide
It is general, it can be used as cement materials, thermal insulating filling etc., clinker made to be fully used.
(about 70 DEG C~90 DEG C) of blast furnace slag quenching water are used as a kind of temperature waste heat sources, have the characteristics that temperature is stable, flow is big,
For the UTILIZATION OF VESIDUAL HEAT IN of washing slag water, Chinese patent CN207585372U discloses " blast furnace punching July 6 2018 publication date
Washing slag water is led to circulatory pool by elevator pump, drainage tube by pulp water afterheat utilizing system ", the system, and circulatory pool connects heating pump,
The water outlet of heating pump connects sintered mix water pipeline by water supplying pipe, and it is dense that circulatory pool also connects dynamics factory by first pipe
Brine discharge tube line, can also be by heat exchanger after, after the waste heat of superfluous water is made full use of inject circulatory pool follow
Ring uses.Washing slag water is led to circulatory pool from pond and other measures is taken to carry out UTILIZATION OF VESIDUAL HEAT IN again by the system, can be lost so big
Calorimetric amount is unfavorable for the thermal energy recycling of washing slag water.
Patent CN207121610U, March 20 2018 publication date disclose " blast furnace slag flushing vapor waste heat recycling
Utilize system ", which will be delivered to steam accumulation of heat through steam reheater after the collection of flushing cinder water vapour using extractor fan
Device, lithium bromide refrigerating water dispenser group, are finally condensed into condensed water for steam and generate chilled water.The system is needed in original grain slag system
Additional mating large number of equipment on the basis of system, such as extractor fan, steam reheater, steam accumulator, gas-liquid heat exchanger
Deng system flow complexity, equipment investment height；Not only there are a large amount of washing slag waters (about into washing slag water circulating water pool in the system
70 DEG C~90 DEG C), there are also the slag particle obtained after slag water quenching, other part steam (about 60 DEG C~100 DEG C) cannot be by draught hood
Trapping can enter circulating water pool along pipeline, and the washing slag water of circulating water pool and the heat of steam are not recycled adequately.
Patent CN101265039B 2008 publication dates September 17th, discloses a kind of " environment-friendly type bottom filter process State of Blast Furnace
Slag treatment equipment and processing method ", this method can reduce flushing cinder water, reduce water consume, improve the rate of filtration, reduce filtering ponds
Occupied area, the technology have been applied for many years and have achieved good result.The water quenching of high-temperature liquid state slag is by recirculated water (about 40
DEG C) complete, it needs to use after cooling down washing slag water (about 70 DEG C~90 DEG C), in the method, washing slag water is through filtering
Cooling tower is directly got to by upper tower pump after pipe to be cooled down, and not only wastes the thermal energy of washing slag water, and increase cooling tower
Workload.
By being analyzed above it is found that although the recoverable side of blast furnace grain slag system filtering ponds heat has been provided in the prior art
Method, but there have various defects to have in different degrees of and different aspect to be to be solved, it is necessary to study new blast furnace grain slag system mistake
Filter tank heat energy recovering method realizes that the Efficient Cycle of the energy utilizes and reduces air pollution.
In the treatment process of blast furnace cinder, a large amount of high-temperature steams of existing granulation also have filtering ponds temperature stabilization, stream
Big washing slag water is measured, there are also steam existing for filtering ponds surface long term when flushing cinder, recycles the thermal energy of these washing slag waters and steam simultaneously
The putting idle discharge of sulfur-bearing steam is reduced to be of great significance for energy-saving and emission-reduction.
Summary of the invention
In order to recycle the thermal energy in blast furnace granulated slag, the present invention provides a kind of blast furnace granulated slag process steam disappear bletilla thermal energy return
Receipts system, the blast furnace granulated slag process steam bletilla heat reclaiming system that disappears can sufficiently recycle the steam thermal energy of granulation,
The thermal energy of filtering ponds washing slag water and steam can be recycled, while reducing the workload of cooling tower, slag treatment work can also be reduced
The discharge of skill sulfur-bearing steam really realizes that the Efficient Cycle of energy-saving and emission-reduction and the energy utilizes.
The present invention solves technological invention used by its technical problem: a kind of blast furnace granulated slag process steam disappears bletilla thermal energy
Recovery system, granulation tower, chimney, filtering ponds, hot water heat exchange unit, cooling tower, tank including being sequentially connected in series setting, filtering
Pond is externally connected with the first vapor heat exchanger, and the top of filtering ponds is equipped with removable vapour hood.
Granulator and the second vapor heat exchanger are provided in granulation tower, granulator is located at the high-temperature slag entrance of granulation tower
Lower section, the second vapor heat exchanger be located at granulation tower top, be granulated tower high-temperature slag entrance be located at the second vapor heat exchanger with
Between granulator.
The lower part of granulation tower is connect by the first slag-water slurry pipeline with chimney, is granulated at the top of tower and is passed through jet chimney
It is connect with chimney, jet chimney is equipped with the first air-introduced machine, and jet chimney and the junction for being granulated tower are located at the second steam heat-exchanging
The top of device.
Spray equipment, demister and back purge system, the company of jet chimney and chimney are successively arranged in chimney from bottom to top
The lower section that place is located at spray equipment is connect, spray equipment contains circumferential uniformly alternately arranged long spray gun and the short spray gun along chimney,
Multiple high-pressure nozzles have been evenly arranged on long spray gun and short spray gun.
The lower part of chimney is connect by the second slag-water slurry pipeline with filtering ponds, and the top of filtering ponds is equipped with discharge of steam
Mouthful, which is connect by steam pipeline with the first vapor heat exchanger, which is equipped with second
Air-introduced machine.
The high-temperature steam of filtering ponds discharge is able to enter heat release in the first vapor heat exchanger, high-temperature steam energy after heat release
Enough enter chimney or be back in filtering ponds, the first vapor heat exchanger is connected with the first heat exchange pipeline, in the first heat exchange pipeline
The first heat transferring medium can absorb heat in the first vapor heat exchanger and in the laggard access customer pipe network of absorbing heat.
The hot water heat exchange unit contains the first hot water heat exchanger and the second hot water heat exchanger, the first hot water heat exchanger and
The setting of two hot water heat exchanger serial or parallel connections, the first hot water heat exchanger and the second hot water heat exchanger are all set in pump house, water
Pump house is between filtering ponds and tank.
The high temperature filtration water energy flowed out in filtering ponds reaches the heat release in the first hot water heat exchanger and the second hot water heat exchanger, the
One hot water heat exchanger and the second hot water heat exchanger are connected with the second heat exchange pipeline, the second heat transferring medium in the second heat exchange pipeline
It can absorb heat in the first hot water heat exchanger and the second hot water heat exchanger and in the laggard access customer pipe network that absorbs heat.
Cooling tower is located at the top of tank, and tank is connect by waterline with granulation tower and chimney, filtering ponds
Outlet at bottom be externally connected with drainage test and analyze unit, this cross drainage test and analyze unit be able to detect drainage water quality,
Temperature and flow.
The beneficial effects of the present invention are:
1, the present invention can sufficiently in the steam and filtering ponds of melt back Slag treatment process washing slag water thermal energy, realize the energy
Efficient Cycle utilizes.
2, the invention proposes the steam treatment measures sprayed afterwards that first exchanges heat, it is possible to reduce slag treatment process sulfur-bearing steam
Discharge, reduce air pollution.
3, high temperature filtration water temperature after heat exchanger is handled reduces, and can reduce the workload of cooling tower, realizes efficient
It is cooling.
4, the present invention uses motorless heat exchanger, has the advantages that operating cost is low, high efficiency.
5, the present invention tests and analyzes the water quality for crossing drainage, while detecting the temperature of drainage, flow, and all
Testing result is timely fed back to blast furnace central control system, high to optimization blast furnace raw material and fuel quality and proportion, optimization blast furnace operating, promotion
Furnace direct motion plays an important role.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is that blast furnace granulated slag process steam disappears the general illustration of bletilla heat reclaiming system.
Fig. 2 is the top view of spray equipment.
1, it is granulated tower；2, the second vapor heat exchanger；3, granulator；4, the first air-introduced machine；5, jet chimney；6, the first pulp water
Mixture conduit；7, chimney；8, back purge system；9, demister；10, spray equipment；11, the second slag-water slurry pipeline；12,
Filtering ponds jet chimney；13, the first vapor heat exchanger；14, the first electric butterfly valve；15, first manual butterfly valve；16, it moves and steams
Vapour cover；17, the second Hand-operated butterfly valve；18, the second electric butterfly valve；19, the first check valve；20, third Hand-operated butterfly valve；21, third electricity
Dynamic butterfly valve；22, thermometer；23, flowmeter；24, the 4th Hand-operated butterfly valve；25, heat-exchanger pump；26, second one-way valve；27, the 4th electricity
Dynamic butterfly valve；28, the 5th Hand-operated butterfly valve；29, the first hot water heat exchanger；30, the second hot water heat exchanger；31, upper tower pump；32, the 6th
Hand-operated butterfly valve；33, the 7th Hand-operated butterfly valve；34, slag flushing pump；35, third check valve；36, the 5th electric butterfly valve；37, the 8th manually
Butterfly valve；38, long spray gun；39, short spray gun；40, high-pressure nozzle；41, the second air-introduced machine；42, user's pipe network；43, filtering ponds；44,
Cooling tower；45, tank；46, pump house.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of blast furnace granulated slag process steam disappears bletilla heat reclaiming system, granulation tower 1, chimney including being sequentially connected in series setting
7, filtering ponds 43, hot water heat exchange unit, cooling tower 44, tank 45, filtering ponds 43 are externally connected with the first vapor heat exchanger 13, mistake
The top in filter tank 43 is equipped with removable vapour hood 16, as shown in Figure 1.
In the present embodiment, it is granulated in tower 1 and is provided with granulator 3 and the second vapor heat exchanger 2, granulator 3 is located at granulation
The lower section of the high-temperature slag entrance of tower 1, the second vapor heat exchanger 2 are located at the top of granulation tower 1, and the high-temperature slag of granulation tower 1 enters
Mouth is between the second vapor heat exchanger 2 and granulator 3.Granulator is located at below the entrance of granulation tower high-temperature slag, and steam changes
Hot device is located at the top of granulator close to granulation top of tower.
In the present embodiment, the lower part for being granulated tower 1 is connect by the first slag-water slurry pipeline 6 with chimney 7, and tower 1 is granulated
Top connect with chimney 7 by jet chimney 5, jet chimney 5 is equipped with the first air-introduced machine 4, jet chimney 5 be granulated tower 1
Junction be located at the top of the second vapor heat exchanger 2.It is granulated steam of the steam non-condensing in tower from granulation top of tower side
Pipeline introduces chimney by air-introduced machine.
In the present embodiment, spray equipment 10, demister 9 and back purge system 8 are successively arranged in chimney 7 from bottom to top,
One or more layers can be set in spray equipment 10, and the junction of jet chimney 5 and chimney 7 is located at the lower section of spray equipment 10, spray
Shower device 10 contains circumferential uniformly alternately arranged long spray gun 38 and short spray gun 39, long spray gun 38 and the short spray gun 39 along chimney 7
On be evenly arranged multiple high-pressure nozzles 40, as shown in Figure 2.
In the present embodiment, the lower part of chimney 7 is connect by the second slag-water slurry pipeline 11 with filtering ponds 43, filtering ponds
43 top is equipped with steam outlet, which is connect by steam pipeline with the first vapor heat exchanger 13, should
Steam pipeline is equipped with the second air-introduced machine 41.Filtering ponds steam pipe is additionally provided between chimney 7 and the first vapor heat exchanger 13
Road 12.
Removable vapour hood is set at the top of filtering ponds, and removable vapour hood was realized filtering ponds and sealed when flushing cinder, avoided
Sulfur-bearing steam puts idle discharge；Flushing cinder removes vapour hood after stopping to grab slag particle in slag operation cleaning filtering ponds.In filtering ponds
Air-introduced machine is set between chimney, vapor heat exchanger is entered after the steam of filtering pool surface is detached.
In the present embodiment, the high-temperature steam that filtering ponds 43 are discharged is able to enter heat release in the first vapor heat exchanger 13, should
High-temperature steam is able to enter chimney 7 after heat release or is back in filtering ponds 43, and the first vapor heat exchanger 13 is connected with first and changes
Hot pipeline, which can be in the first vapor heat exchanger
It absorbs heat in 13 and in the laggard access customer pipe network 42 that absorbs heat.
When blast furnace slag flushing, slag-water slurry carries steam and enters filtering ponds, removable vapour hood is arranged on filtering ponds, punching
The high temperature filtration water of steam and filtering bottom of pond portion that pool surface is filtered when slag is drawn respectively, through vapor heat exchanger and hot water heat exchanger
Heat exchange action, realize filtering ponds thermal energy recycling, avoid steam from putting idle discharge.Blast furnace stops flushing cinder, needs to clear up filtering
In pond when slag particle, vapour hood is removed convenient for grabbing slag operation.
In the present embodiment, the hot water heat exchange unit contains the first hot water heat exchanger 29 and the second hot water heat exchanger 30,
First hot water heat exchanger 29 is arranged with 30 serial or parallel connection of the second hot water heat exchanger and (connects in Fig. 1), the first hot water heat exchanger
29 and second hot water heat exchanger 30 be all set in pump house 46, pump house 46 is between filtering ponds 43 and tank 45.
In the present embodiment, the high temperature filtration water energy flowed out in filtering ponds 43 is enough in the first hot water heat exchanger 29 and the second heat
Heat release in water- to-water heat exchanger 30, the first hot water heat exchanger 29 and the second hot water heat exchanger 30 are connected with the second heat exchange pipeline, this second
The second heat transferring medium (such as normal-temperature water or other media) to exchange heat in pipeline can be in the first hot water heat exchanger 29 and the second hot water
Heat absorption and in the laggard access customer pipe network 42 of absorbing heat in heat exchanger 30, as shown in Figure 2.
In the present embodiment, cooling tower 44 is located at the top of tank 45, and tank 45 passes through waterline and granulation tower 1
It is connected with chimney 7, the outlet at bottom of filtering ponds 43 was externally connected with drainage and tests and analyzes unit, this is crossed drainage and tests and analyzes unit
It was able to detect the water quality, temperature and flow of drainage, this is crossed drainage detection and analysis unit and contains thermometer 22 and flowmeter 23.
High temperature filtration water temperature under the action of heat exchanger, which reduces, becomes filter at low temperature water, and filter at low temperature water enters cooling tower
Further enter tank as low temperature washing slag water after cooling and realizes recycling for drainage.In filtering ponds outlet at bottom
Place tests and analyzes the water quality for crossing drainage, while detecting the temperature of drainage, flow, and all testing results are timely
Blast furnace central control system is fed back, optimization blast furnace raw material and fuel quality and proportion, promote smooth operation of furnace at optimization blast furnace operating.
The blast furnace granulated slag process steam is described below to disappear the course of work of bletilla heat reclaiming system.
Granulator 3 is set below the entrance of granulation 1 high-temperature slag of tower, and high-temperature slag is granulated the effect of water in a large amount of high speeds
Lower completion granulation, slag-water slurry fall into granulation 1 bottom of tower.It is granulated 1 bottom of tower and introduces conveying water, under the action of conveying water,
Slag-water slurry enters 7 bottom of chimney.
In the top of granulator 3, the second vapor heat exchanger 2, the setting of granulation top of tower side are set at the top of granulation tower 1
Jet chimney 5 and the first air-introduced machine 4.Under the action of the first air-introduced machine 4, (about 80 DEG C of steam of generation during slag granulating
~100 DEG C) it is being granulated tower moved upward inside, when steam passes through the second vapor heat exchanger 2, it is introduced into the normal-temperature water of heat exchanger
(about 25 DEG C~35 DEG C) absorb a large amount of thermal energy and become hot water (about 60 DEG C~80 DEG C), and a large amount of steam are condensed into water in heat transfer process
It is dropped into granulation 1 bottom of tower.Non-condensing steam enters chimney 7 from the jet chimney 5 of granulation 1 top-side of tower.
One layer of (or multilayer) spray equipment 10, foam removal are sequentially arranged above what granulation tower jet chimney 5 exported in chimney 7
Device 9, back purge system 8.
Spray equipment 10 is by the multiple long spray guns 38 and short spray gun 39 that uniform crossover is arranged on sustained height inside chimney
It forms, is evenly arranged multiple high-pressure nozzles 40 on long spray gun and short spray gun.According to process requirements, can be arranged on different height
The long spray gun 38 and short spray gun 39 and its subsidiary high-pressure nozzle 40 of many levels.Shower water is after the ejection of high-pressure nozzle 40 in cigarette
Spray pattern is formed inside chimney 7, the shower water of atomization is uniformly covered with chimney inner space.
After non-condensing steam enters chimney 7, become condensed water, condensed water and shower water under the action of atomizing spray water
7 bottom of chimney is fallen into together.Demister 9 is arranged above spray equipment 10, eliminates non-condensing steam and small water droplet；Backwash
Device 8 periodically backwashes demister 9, is blocked after avoiding demister 9 from being used for a long time.
From granulation tower 1 draw slag-water slurry enter chimney 7 after, together with the condensed water of chimney bottom and shower water into
Enter filtering ponds.Removable vapour hood 16 is set at the top of filtering ponds, the steam of filtering pool surface is sealed；Flushing cinder can after stopping
Moving steam cover 16 is removed to grab slag.
Draw the steam of filtering pool surface close to the position aperture at top at chimney 7 in filtering ponds side wall.It is filtering
Second air-introduced machine 41 is set outside the side-wall hole of pond.In the effect that the negative pressure and removable vapour hood 16 of the second air-introduced machine 41 seal
Under, the steam for filtering pool surface is pulled out filtering ponds into the first vapor heat exchanger 13.
Normal-temperature water (about 25 DEG C~35 DEG C) (or other hot mediums to be added) is (about 60 after the heating of the first vapor heat exchanger 13
DEG C~70 DEG C) entering user's pipe network 42, most of steam condenses into water droplet under the action of the first vapor heat exchanger 13, with pulp water
Mixture enters filtering ponds 43 together, and fraction steam is not condensed into chimney 7, the effect of spray equipment 10 in chimney 7
Become water droplet down, falls into 7 bottom the second slag-water slurry pipeline 11 of chimney and enter filtering ponds 43.
First hot water heat exchanger 29 and the second hot water heat exchanger 30 are set in pump house 46, and two heat exchangers are with the side of series connection
Formula connection, high temperature filtration water (about 70 DEG C~90 DEG C) is after filtering bottom of pond portion outflow successively by the first hot water heat exchanger 29 and the
Two hot water heat exchangers 30 complete the heating to normal-temperature water in heat exchanging process.
Normal-temperature water (about 25 DEG C~35 DEG C) becomes heat after the first hot water heat exchanger 29 and the heating of the second hot water heat exchanger 30
Water (about 60 DEG C~70 DEG C) enters user's pipe network by the first check valve 19, the second electric butterfly valve 18 and the second Hand-operated butterfly valve 17
42.High temperature filtration water enters first after heat-exchanger pump 25, second one-way valve 26, the 4th electric butterfly valve 27 and the 5th Hand-operated butterfly valve 28
Hot water heat exchanger 29 and the second hot water heat exchanger 30, temperature, which reduces, under the action of heat exchanger becomes (about 50 DEG C of filter at low temperature water
~60 DEG C).
Filter at low temperature water enters cooling tower through upper tower pump 31 and the 6th Hand-operated butterfly valve 32, becomes cooling water after completing cooling
(about 40 DEG C~45 DEG C) enter tank 45 and store for future use.When needing flushing cinder, cooling water is drawn from the bottom of tank 45, through rushing
Pulp pump 34 promotes power, then as low temperature washing slag water, shower water, conveying water through third check valve 35, the 5th electric butterfly valve 36
Corresponding position is guided into the 8th Hand-operated butterfly valve 37, realizes recycling for drainage.
The variation of blast furnace raw material and fuel quality and proportion will lead to the composition transfer of blast furnace cinder, and then change the water of drainage
Matter.At filtering ponds outlet at bottom, the water quality for crossing drainage flowed out after filter layer filtering is tested and analyzed, while temperature being installed
Degree meter 22 and flowmeter 23 detected temperature, the flow of drainage, and all testing results are timely fed back to control in blast furnace and are
System to optimization blast furnace raw material and fuel quality and proportion, optimization blast furnace operating, promotes smooth operation of furnace to play an important role.
Hot water (about 60 DEG C~70 DEG C) after heat exchanger heats is widely used, may be used as living after introducing user's pipe network
The bathing pool shower of water system, heat supply in winter are also used as material humidification preheating of industrial water system etc..The granulation steam of slag
And the thermal energy of washing slag water and steam is effectively recycled in filtering ponds, and reduces putting to idle discharge for sulfur-bearing steam, for
Energy-saving and emission-reduction are of great significance.
The above, only specific embodiments of the present invention cannot limit the range that invention is implemented with it, so it is equivalent
The displacement of component, or according to equivalent variations made by the invention patent protection scope and modification, should all still fall within what this patent was covered
Scope.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technological invention, technological invention with
Use can be freely combined between technological invention.
Claims (9)
- A kind of bletilla heat reclaiming system 1. blast furnace granulated slag process steam disappears, which is characterized in that the blast furnace granulated slag process steam The bletilla heat reclaiming system that disappears includes the granulation tower (1) for being sequentially connected in series setting, chimney (7), filtering ponds (43), hot water heat exchange list Member, cooling tower (44), tank (45), filtering ponds (43) are externally connected with the first vapor heat exchanger (13), the top of filtering ponds (43) Portion is equipped with removable vapour hood (16).
- The bletilla heat reclaiming system 2. blast furnace granulated slag process steam according to claim 1 disappears, which is characterized in that granulation tower (1) granulator (3) and the second vapor heat exchanger (2) are provided in, granulator (3) is located at the high-temperature slag entrance of granulation tower (1) Lower section, the second vapor heat exchanger (2) be located at granulation tower (1) top, granulation tower (1) high-temperature slag entrance be located at second steam Between vapour heat exchanger (2) and granulator (3).
- The bletilla heat reclaiming system 3. blast furnace granulated slag process steam according to claim 2 disappears, which is characterized in that granulation tower (1) lower part is connect by the first slag-water slurry pipeline (6) with chimney (7), passes through jet chimney at the top of granulation tower (1) (5) it is connect with chimney (7), jet chimney (5) is equipped with the first air-introduced machine (4), the connection of jet chimney (5) and granulation tower (1) Place is located at the top of the second vapor heat exchanger (2).
- The bletilla heat reclaiming system 4. blast furnace granulated slag process steam according to claim 3 disappears, which is characterized in that chimney (7) it is successively arranged spray equipment (10), demister (9) and back purge system (8), jet chimney (5) and chimney from bottom to top in (7) junction is located at the lower section of spray equipment (10), and spray equipment (10) is uniformly alternately arranged containing the circumferential direction along chimney (7) Long spray gun (38) and short spray gun (39), be evenly arranged multiple high-pressure nozzles (40) on long spray gun (38) and short spray gun (39).
- The bletilla heat reclaiming system 5. blast furnace granulated slag process steam according to claim 1 disappears, which is characterized in that chimney (7) lower part is connect by the second slag-water slurry pipeline (11) with filtering ponds (43), and the top of filtering ponds (43) is equipped with steam Discharge outlet, which is connect by steam pipeline with the first vapor heat exchanger (13), on the steam pipeline Equipped with the second air-introduced machine (41).
- The bletilla heat reclaiming system 6. blast furnace granulated slag process steam according to claim 5 disappears, which is characterized in that filtering ponds (43) high-temperature steam being discharged is able to enter heat release in the first vapor heat exchanger (13), which is able to enter after heat release Chimney (7) is back in filtering ponds (43), and the first vapor heat exchanger (13) is connected with the first heat exchange pipeline, first heat exchanger tube The first heat transferring medium in line can absorb heat and in laggard access customer pipe network (42) of absorbing heat in the first vapor heat exchanger (13).
- The bletilla heat reclaiming system 7. blast furnace granulated slag process steam according to claim 1 disappears, which is characterized in that the heat Water heat exchange unit contains the first hot water heat exchanger (29) and the second hot water heat exchanger (30), the first hot water heat exchanger (29) and second The setting of hot water heat exchanger (30) serial or parallel connection, the first hot water heat exchanger (29) and the second hot water heat exchanger (30) are all set in water In pump house (46), pump house (46) is located between filtering ponds (43) and tank (45).
- The bletilla heat reclaiming system 8. blast furnace granulated slag process steam according to claim 7 disappears, which is characterized in that filtering ponds (43) the high temperature filtration water energy flowed out in reaches the heat release in the first hot water heat exchanger (29) and the second hot water heat exchanger (30), and first Hot water heat exchanger (29) and the second hot water heat exchanger (30) are connected with the second heat exchange pipeline, and second in the second heat exchange pipeline is changed Thermal medium can absorb heat and in the laggard access customer pipe that absorbs heat in the first hot water heat exchanger (29) and the second hot water heat exchanger (30) Net (42).
- The bletilla heat reclaiming system 9. blast furnace granulated slag process steam according to claim 1 disappears, which is characterized in that cooling tower (44) it is located at the top of tank (45), tank (45) is connect with granulation tower (1) and chimney (7) by waterline, filtered The outlet at bottom in pond (43) was externally connected with drainage and tests and analyzes unit, this is crossed drainage detection and analysis unit and was able to detect drainage Water quality, temperature and flow.
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| CN201811610070.3A CN109457070B (en) | 2018-12-27 | 2018-12-27 | A steam dewhitening and heat energy recovery system for blast furnace water slag process |
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| CN110093464A (en) * | 2019-04-16 | 2019-08-06 | 浙江菲达环保科技股份有限公司 | A kind of blast furnace slag flushing residual heat heating and steam disappear white system and method |
| CN110132024A (en) * | 2019-04-16 | 2019-08-16 | 浙江菲达环保科技股份有限公司 | A kind of blast furnace water slag-flushing process waste utilization and the white system and method that disappears |
| CN110894562A (en) * | 2019-12-25 | 2020-03-20 | 中冶京诚工程技术有限公司 | A blast furnace slag bottom filter and whitening system |
| CN110964866A (en) * | 2019-12-30 | 2020-04-07 | 中冶赛迪上海工程技术有限公司 | Recovery device and recovery method for steam heat and moisture of blast furnace granulated slag |
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| CN110975499A (en) * | 2019-12-25 | 2020-04-10 | 中冶京诚工程技术有限公司 | Environment-friendly white-removing device for blast furnace granulated slag |
| CN111004880A (en) * | 2019-12-25 | 2020-04-14 | 中冶京诚工程技术有限公司 | A blast furnace water slag system whitening device |
| CN113637811A (en) * | 2021-07-29 | 2021-11-12 | 中国恩菲工程技术有限公司 | Slag flushing pool and water vapor recycling system |
| CN113832265A (en) * | 2021-08-06 | 2021-12-24 | 中冶南方工程技术有限公司 | Blast furnace quenching slag steam whitening technology and device |
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| CN110894562A (en) * | 2019-12-25 | 2020-03-20 | 中冶京诚工程技术有限公司 | A blast furnace slag bottom filter and whitening system |
| CN110982970A (en) * | 2019-12-25 | 2020-04-10 | 中冶京诚工程技术有限公司 | Environment-friendly whitening method for blast furnace granulated slag system |
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| CN111004880B (en) * | 2019-12-25 | 2024-03-05 | 中冶京诚工程技术有限公司 | White device of blast furnace grain slag system that disappears |
| CN110975496B (en) * | 2019-12-25 | 2024-02-02 | 中冶京诚工程技术有限公司 | Environment-friendly white removing system for granulated slag of blast furnace |
| CN110975499B (en) * | 2019-12-25 | 2024-02-02 | 中冶京诚工程技术有限公司 | Environment-friendly white removing device for granulated slag of blast furnace |
| CN110964866A (en) * | 2019-12-30 | 2020-04-07 | 中冶赛迪上海工程技术有限公司 | Recovery device and recovery method for steam heat and moisture of blast furnace granulated slag |
| CN110964866B (en) * | 2019-12-30 | 2024-02-06 | 中冶赛迪上海工程技术有限公司 | Recovery device and recovery method for steam heat and moisture of blast furnace slag |
| CN113637811B (en) * | 2021-07-29 | 2023-03-07 | 中国恩菲工程技术有限公司 | Slag flushing pool and water vapor recycling system |
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| CN113832265A (en) * | 2021-08-06 | 2021-12-24 | 中冶南方工程技术有限公司 | Blast furnace quenching slag steam whitening technology and device |
| CN115216600A (en) * | 2022-07-19 | 2022-10-21 | 南京青述节能技术有限公司 | High temperature and high pressure water quenching and melting slag waste heat recovery device |
| CN115216600B (en) * | 2022-07-19 | 2024-04-26 | 南京青述节能技术有限公司 | High-temperature high-pressure water quenching molten slag waste heat recovery device |
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