CN109487019A - A kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system - Google Patents
A kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system Download PDFInfo
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- CN109487019A CN109487019A CN201811609265.6A CN201811609265A CN109487019A CN 109487019 A CN109487019 A CN 109487019A CN 201811609265 A CN201811609265 A CN 201811609265A CN 109487019 A CN109487019 A CN 109487019A
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- waste heat
- filtering ponds
- utilizing waste
- refrigeration
- blast furnace
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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
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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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- 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
- F27D17/004—Systems for reclaiming 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
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Filtration Of Liquid (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration to utilize system, including high-altitude chimney (1), filtering ponds (28), pump house (29), cooling tower (30) and tank (31), filtering ponds (28) are externally provided with the first utilizing waste heat for refrigeration unit (3), the top of filtering ponds (28) is equipped with steam discharge hole, the high-temperature steam of steam discharge hole discharge is able to enter acting in the first utilizing waste heat for refrigeration unit (3), the lower part of filtering ponds (28) is equipped with high temperature filtration water out, the high temperature filtration water of high temperature filtration water out discharge is able to enter acting in the second utilizing waste heat for refrigeration unit (19).The blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration can make full use of the waste heat of washing slag water and steam in filtering ponds using system, reduce the workload of cooling tower simultaneously, the discharge of filtering ponds sulfur-bearing steam can also be reduced, really realizes that the Efficient Cycle of energy-saving and emission-reduction and the energy utilizes.
Description
Technical field
The present invention relates to metallurgical thermal energy recycling fields, and particularly a kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system
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.
Although the recoverable method of blast furnace grain slag system filtering ponds heat has been provided in the prior art, in different journeys
It is to be solved that degree and different aspect have various defects to have, it is necessary to study new blast furnace grain slag system filtering ponds thermal energy recycling side
Method realizes that the Efficient Cycle of the energy utilizes and reduces air pollution.
Summary of the invention
In order to recycle the thermal energy in blast furnace grain slag system filtering ponds.The present invention provides a kind of blast furnace granulated slag filtering ponds
Utilizing waste heat for refrigeration utilizes system, the blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration using system can make full use of in filtering ponds washing slag water and
The waste heat of steam, while reducing the workload of cooling tower, the discharge of filtering ponds sulfur-bearing steam can also be reduced, really realizes section
It can emission reduction and the Efficient Cycle utilization of the energy.
The present invention solves technological invention used by its technical problem: a kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilization
System, including high-altitude chimney, filtering ponds, pump house, cooling tower and tank, filtering ponds are externally provided with the first utilizing waste heat for refrigeration unit,
The top of filtering ponds is equipped with steam discharge hole, is equipped with the second utilizing waste heat for refrigeration unit in pump house, which passes through high temperature
Steam pipeline is connect with the first utilizing waste heat for refrigeration unit, and the high-temperature steam of steam discharge hole discharge is able to enter the first waste heat
It does work in refrigeration unit, the lower part of filtering ponds is equipped with high temperature filtration water out, which passes through high temperature filtration water
Feed-line is connect with the second utilizing waste heat for refrigeration unit, the high temperature filtration water of high temperature filtration water out discharge be able to enter this
It does work in two utilizing waste heat for refrigeration units.
The blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration using system further include first to refrigerant intake pipeline, first to
Refrigerant export pipeline, slag-water slurry discharge-channel and condensed water feed-line, first in refrigerant intake pipeline
Be able to enter in the first utilizing waste heat for refrigeration unit to refrigerant freezed and from first to refrigerant export pipeline be discharged,
The high-temperature steam of steam discharge hole discharge is able to enter acting in the first utilizing waste heat for refrigeration unit and arranges from condensed water feed-line
Out, the both ends of slag-water slurry discharge-channel are connect with high-altitude chimney and filtering ponds respectively, and slag-water slurry discharge-channel can
The condensed water that condensed water feed-line is discharged is sent into filtering ponds.
The blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration further includes air-conditioner set using system, and condensed water feed-line passes through steaming
Vapour discharge pipe line is connect with high-altitude chimney, and first connects to the normal-temperature water outlet of refrigerant intake pipeline and air-conditioner set, the
One connects to the chilled water inlet of refrigerant export pipeline and air-conditioner set, and first is equipped with electricity to refrigerant export pipeline
Dynamic butterfly valve and Hand-operated butterfly valve.
An at least engine exhaust-powered refrigerator is equipped in the first utilizing waste heat for refrigeration unit.
High-temperature steam feed-line is equipped with air-introduced machine.
The blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration using system further include second to refrigerant intake pipeline, second to
Refrigerant export pipeline and filter at low temperature water feed-line, second in refrigerant intake pipeline can to refrigerant
Into freezed in the second utilizing waste heat for refrigeration unit and from second to refrigerant export pipeline be discharged, high temperature filtration water delivery pipe
High temperature filtration water in line is able to enter acting in the second utilizing waste heat for refrigeration unit and is discharged from filter at low temperature water feed-line.
The blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration further includes air-conditioner set using system, and second to refrigerant input pipe
The connection of the normal-temperature water outlet of line and air-conditioner set, second connects to the chilled water inlet of refrigerant export pipeline and air-conditioner set
It connects, filter at low temperature water feed-line is connect with cooling tower, and cooling tower is located at the top of tank.
It is equipped with an at least engine exhaust-powered refrigerator in the second utilizing waste heat for refrigeration unit, is successively set on high temperature filtration water feed-line
There are thermometer, flowmeter, Hand-operated butterfly valve, heat-exchanger pump, check valve, electric butterfly valve and Hand-operated butterfly valve, second exports to refrigerant
Hand-operated butterfly valve, electric butterfly valve, check valve, Hand-operated butterfly valve and electric butterfly valve, filter at low temperature water feed-line are successively arranged on pipeline
On be successively arranged tower pump and Hand-operated butterfly valve, tank be connected with washing slag water discharge pipe, successively set on washing slag water discharge pipe
There are Hand-operated butterfly valve, slag flushing pump, check valve, electric butterfly valve and Hand-operated butterfly valve.
Filter layer is equipped in filtering ponds, the top of filtering ponds is equipped with the removable vapour hood that can close the filtering ponds.
High temperature filtration water feed-line, which is equipped with, tests and analyzes device.
The beneficial effects of the present invention are:
1, the thermal energy that can sufficiently recycle washing slag water and steam in filtering ponds realizes that the Efficient Cycle of the energy utilizes.
2, the discharge of filtering ponds sulfur-bearing steam can be reduced, air pollution is reduced.
3, crossing drainage temperature after heat exchanger is handled reduces, and can reduce the workload of cooling tower, realizes efficiently cooling.
4, using the engine exhaust-powered refrigerator of low energy consumption, have the advantages that operating cost is low, high efficiency.
5, it makes full use of original pump house to realize that the utilizing waste heat for refrigeration for crossing drainage and steam in filtering ponds utilizes, is suitable for existing
The environmental protection and energy saving of blast furnace granulated slag technique are transformed.
6, the water quality for crossing drainage is tested and analyzed, while detected the temperature of drainage, flow, and all detections are tied
Fruit is timely fed back to blast furnace central control system, to optimization blast furnace raw material and fuel quality and proportion, optimization blast furnace operating, promotes smooth operation of furnace
It 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 the schematic diagram that blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration of the present invention utilizes system.
1, high-altitude chimney；2, spray equipment；3, the first utilizing waste heat for refrigeration unit；4, electric butterfly valve；5, Hand-operated butterfly valve；6, removable
Dynamic vapour hood；7, Hand-operated butterfly valve；8, electric butterfly valve；9, check valve；10, Hand-operated butterfly valve；11, electric butterfly valve；12, thermometer；13,
Flowmeter；14, Hand-operated butterfly valve；15, heat-exchanger pump；16, check valve；17, electric butterfly valve；18, Hand-operated butterfly valve；19, the second waste heat system
Cold unit；20, upper tower pump；21, Hand-operated butterfly valve；22, Hand-operated butterfly valve；23, slag flushing pump；24, check valve；25, electric butterfly valve；26,
Hand-operated butterfly valve；27, discharge of steam pipeline；28, filtering ponds；29, pump house；30, cooling tower；31, tank；32, high-temperature steam
Feed-line；33, high temperature filtration water feed-line；34, first to refrigerant intake pipeline；35, first is defeated to refrigerant
Pipeline out；36, slag-water slurry discharge-channel；37, condensed water feed-line；38, air-conditioner set；39, second to refrigerant
Intake pipeline；40, second to refrigerant export pipeline；41, filter at low temperature water feed-line；42, washing slag water discharge pipe；
43, filter layer.
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 filtering ponds utilizing waste heat for refrigeration utilizes system, including high-altitude chimney 1, filtering ponds 28, pump house 29, cold
But tower 30 and tank 31, filtering ponds 28 are externally provided with the first utilizing waste heat for refrigeration unit 3, and the upper wall of filtering ponds 28 is arranged equipped with steam
Discharge hole, is equipped with the second utilizing waste heat for refrigeration unit 19 in pump house 29, which passes through high-temperature steam feed-line 32 and the
The connection of one utilizing waste heat for refrigeration unit 3, the high-temperature steam of steam discharge hole discharge, which is able to enter in the first utilizing waste heat for refrigeration unit 3, to be done
Function, the lower part of filtering ponds 28 are equipped with high temperature filtration water out, which passes through high temperature filtration water feed-line 33
It is connect with the second utilizing waste heat for refrigeration unit 19, the high temperature filtration water of high temperature filtration water out discharge is able to enter second waste heat
It does work in refrigeration unit 19, as shown in Figure 1.
In the present embodiment, the blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration further includes first defeated to refrigerant using system
Enter pipeline 34, first to refrigerant export pipeline 35, slag-water slurry discharge-channel 36 and condensed water feed-line 37, first
It is made to being able to enter in the first utilizing waste heat for refrigeration unit 3 to refrigerant (such as normal-temperature water) in refrigerant intake pipeline 34
It is cold and from first to refrigerant export pipeline 35 be discharged, the steam discharge hole discharge high-temperature steam be able to enter the first waste heat
In refrigeration unit 3 acting and from condensed water feed-line 37 be discharged, the both ends of slag-water slurry discharge-channel 36 respectively with high-altitude
Chimney 1 and filtering ponds 28 connect, and slag-water slurry discharge-channel 36 can send the condensed water that condensed water feed-line 37 is discharged
Enter filtering ponds 28.
In the present embodiment, the blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration further includes air-conditioner set 38 using system, condensation
Water feed-line 37 is connect by discharge of steam pipeline 27 with high-altitude chimney 1, and first to refrigerant intake pipeline 34 and air-conditioning
The normal-temperature water outlet of unit 38 connects, and first connect to refrigerant export pipeline 35 with the chilled water inlet of air-conditioner set 38,
First is equipped with electric butterfly valve 4 and Hand-operated butterfly valve 5 to refrigerant export pipeline 35.
In the present embodiment, an at least engine exhaust-powered refrigerator is equipped in the first utilizing waste heat for refrigeration unit 3, such as first waste heat
More suction-type lithium bromide engine exhaust-powered refrigerators of serial or parallel connection are equipped in refrigeration unit 3.It is set on high-temperature steam feed-line 32
There is air-introduced machine.
In the present embodiment, the blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration further includes second defeated to refrigerant using system
Enter pipeline 39, second to refrigerant export pipeline 40 and filter at low temperature water feed-line 41, second to refrigerant input pipe
Being able to enter in the second utilizing waste heat for refrigeration unit 19 in line 39 to refrigerant (such as normal-temperature water) is freezed and from second wait make
Cold medium export pipeline 40 is discharged, and the high temperature filtration water in high temperature filtration water feed-line 33 is able to enter second utilizing waste heat for refrigeration
It does work in unit 19 and is discharged from filter at low temperature water feed-line 41.
In the present embodiment, the blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration further includes air-conditioner set 38 using system, and second
It is connect to refrigerant intake pipeline 39 with the normal-temperature water outlet of air-conditioner set 38, second to refrigerant export pipeline 40 and sky
The chilled water inlet connection of unit 38 is adjusted, filter at low temperature water feed-line 41 is connect with cooling tower 30, and cooling tower 30 is located at water storage
The top in pond 31.
In the present embodiment, in the second utilizing waste heat for refrigeration unit 19 be equipped with an at least engine exhaust-powered refrigerator, as this more than second
More suction-type lithium bromide engine exhaust-powered refrigerators of serial or parallel connection are equipped in refrigeration heat unit 19.High temperature filtration water feed-line 33
On be successively arranged thermometer 12, flowmeter 13, Hand-operated butterfly valve 14, heat-exchanger pump 15, check valve 16, electric butterfly valve 17 and Hand-operated butterfly valve
18, second to be successively arranged Hand-operated butterfly valve 7, electric butterfly valve 8, check valve 9,10 and of Hand-operated butterfly valve on refrigerant export pipeline 40
Electric butterfly valve 11, tower pump 20 is successively arranged on filter at low temperature water feed-line 41 and Hand-operated butterfly valve 21, tank 31 are connected with
Washing slag water discharge pipe 42 is successively arranged Hand-operated butterfly valve 22, slag flushing pump 23, check valve 24, electronic on washing slag water discharge pipe 42
Butterfly valve 25 and Hand-operated butterfly valve 26, as shown in Figure 1.
In the present embodiment, filter layer 43 is equipped in filtering ponds 28, the top of filtering ponds 28, which is equipped with, can close the filtering
The removable vapour hood 6 in pond 28.High temperature filtration water feed-line 33, which is equipped with, tests and analyzes device.
In the present invention, removable vapour hood is set at the top of filtering ponds, is set at the chimney of high-altitude in filtering ponds side
Steam waste heat refrigeration machine is set, one or more afterheat of hot water refrigeration machine is set in pump house, utilizes heat-exchanger pump, upper tower pump, flushing cinder
The equipment such as pump and steam waste heat refrigeration machine, afterheat of hot water refrigeration machine realize filtering ponds bottom filtering and filter pool surface steam
Utilizing waste heat for refrigeration utilizes, reduces sulfur-bearing discharge of steam, realizes recycling for drainage.
In the present invention, one or more afterheat of hot water refrigeration machine, more afterheat of hot water refrigeration machine roots are set in pump house
It is connected in series or in parallel according to on-site actual situations.Removable vapour hood is set at the top of filtering ponds, and when flushing cinder is removable
Vapour hood is realized filtering ponds and is sealed, and sulfur-bearing steam is avoided to put idle discharge；Flushing cinder removes vapour hood after stopping to grab slag and make
Industry clears up slag particle in filtering ponds.
In the present invention, high-altitude chimney has enough height, enough negative pressure is capable of forming in filtering pool surface, in height
Under the action of empty chimney negative-pressure sucking and vapour hood sealing, the steam for filtering pool surface is pulled out filtering ponds and enters steam waste heat system
Cold.Air-introduced machine can be set between filtering ponds and high-altitude chimney, steam waste heat is entered after the steam on filter tank surface is detached
Refrigeration machine.Spray equipment is set in the chimney of high-altitude, and spray equipment sprays atomized water and steam collides and to form drop and fall into smoke aloft
Chimney bottom.
In the present invention, when blast furnace slag flushing, slag-water slurry carries steam and enters filtering ponds, and setting is removable on filtering ponds
Vapour hood respectively draws the high temperature filtration water of steam and filtering bottom of pond portion that pool surface is filtered when flushing cinder, through engine exhaust-powered refrigerator
Heat exchange action, realize filtering ponds utilizing waste heat for refrigeration utilize, avoid steam from putting idle discharge.Blast furnace stops flushing cinder, needs to clear up
In filtering ponds when slag particle, vapour hood is removed convenient for grabbing slag operation.
In the present invention, high temperature filtration water successively passes through one or more engine exhaust-powered refrigerator after filtering bottom of pond portion outflow,
The refrigeration of refrigerant (normal-temperature water or other media) is treated in completion in heat exchanging process, and normal-temperature water is through pump house afterheat of hot water
Become low-temperature cold water after refrigeration machine cooling.High temperature filtration water temperature under the action of engine exhaust-powered refrigerator, which reduces, becomes filter at low temperature
Water, filter at low temperature water enter after cooling tower further cools down as low temperature washing slag water, realize recycling for drainage.
In the present invention, in filtering ponds side, the steam of filtering ponds is drawn in aperture at the chimney of high-altitude, draws steam
Pipeline tilts upward, and steam condensate (SC) is avoided to accumulate corrosion pipeline in pipeline.The steam of extraction is most of in engine exhaust-powered refrigerator
Under the action of condense into water droplet after enter filtering ponds together with slag-water slurry, fraction steam is not condensed into smoke aloft
Chimney.
In the present invention, become drop pendant under the action of spray equipment into the steam of high-altitude chimney and fall behind in smoke aloft
Chimney bottom enters filtering ponds through slag-water slurry channel.At filtering ponds outlet at bottom, detection point is carried out to the water quality for crossing drainage
Analysis, while the temperature of drainage, flow were detected, and all testing results are timely fed back to blast furnace central control system, optimize blast furnace
Raw material and fuel quality and proportion, promote smooth operation of furnace at optimization blast furnace operating.
Blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration of the present invention can be using system in Chinese patent CN 101265039A
(2008 publication dates September 17th, disclosed " a kind of environment-friendly type bottom filter process blast furnace slag treatment device and processing method ")
On the basis of improve, make full use of original chimney and pump house, do not increase additional floor, utilize heat exchanger complete blast furnace water
The recycling of slag system filtering ponds thermal energy.
Suction-type lithium bromide engine exhaust-powered refrigerator is set in pump house, high temperature filtration water (about 70 DEG C~90 DEG C) is from filtering ponds bottom
Successively through excessive platform suction-type lithium bromide engine exhaust-powered refrigerator after portion's outflow, complete to treat refrigerant in heat exchanging process (often
Warm water or other media) refrigeration.
Normal-temperature water (about 25 DEG C~35 DEG C) becomes (about 5 DEG C of low-temperature cold water after suction-type lithium bromide utilizing waste heat for refrigeration mechanism cold
~15 DEG C), enter user's pipe network by check valve, electric butterfly valve and Hand-operated butterfly valve.High temperature filtration water is through heat-exchanger pump 15, check valve
16, enter suction-type lithium bromide engine exhaust-powered refrigerator after electric butterfly valve 17 and Hand-operated butterfly valve 18, in suction-type lithium bromide utilizing waste heat for refrigeration
Temperature, which reduces, under the action of machine becomes filter at low temperature water (about 50 DEG C~60 DEG C), and filter at low temperature water is through upper tower pump 20 and Hand-operated butterfly valve
21 enter cooling tower, store for future use as cooling water (about 40 DEG C~45 DEG C) into tank after completing cooling.When needing flushing cinder,
Cooling water is drawn from water storage bottom of pond portion, power is promoted through slag flushing pump 23, then as low temperature washing slag water through check valve 24, electronic butterfly
Valve 25 and Hand-operated butterfly valve 26 guide flushing cinder point into, realize recycling for drainage.
Removable vapour hood 6 is set at the top of filtering ponds, the steam of filtering pool surface is sealed；Flushing cinder is removable after stopping
Dynamic vapour hood is removed to grab slag.
Draw the steam of filtering pool surface close to the position aperture at top at high-altitude chimney 1 in filtering ponds side wall.It is high
Empty chimney 1 requires enough height (about 70 meters), can filtering pool surface formed enough negative pressure (about 500~
1000Pa).If original chimney height is insufficient, it may be considered that increase chimney height up to meet demand or in filtering ponds side wall
Air-introduced machine is set outside aperture.
Under the action of the negative pressure and removable vapour hood 6 of chimney 1 or air-introduced machine seal in high-altitude, the steam of pool surface is filtered
It is pulled out filtering ponds and enters suction-type lithium bromide engine exhaust-powered refrigerator.
Normal-temperature water (about 25 DEG C~35 DEG C) becomes (about 5 DEG C of low-temperature cold water after suction-type lithium bromide utilizing waste heat for refrigeration mechanism cold
~15 DEG C), most of steam condenses into water droplet under the action of suction-type lithium bromide engine exhaust-powered refrigerator, together with slag-water slurry
Into filtering ponds, fraction steam is not condensed into high-altitude chimney 1, becomes water droplet under the action of spray equipment 2 in chimney,
The bottom for falling into high-altitude chimney 1 enters filtering ponds through slag-water slurry channel.
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 12 and flowmeter 14 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.
The low-temperature cold water (about 5 DEG C~15 DEG C) obtained through suction-type lithium bromide engine exhaust-powered refrigerator is widely used, can be used as
Air conditioning water is sent to air-conditioner set, can also be used as production technology and with chilled water is sent to the corresponding system of blast furnace (such as furnace body is cold
But system).The waste heat of washing slag water and steam is utilized effectively in filtering ponds, and reduces putting to idle discharge for sulfur-bearing steam,
It is of great significance for energy-saving and emission-reduction.
The present invention utilizes the original chimney of environment-friendly type bottom filter process blast furnace slag processing system and pump house, additional not increasing
Under the premise of land occupation, the waste heat of washing slag water and steam in filtering ponds can be made full use of, while reducing the workload of cooling tower
It realizes efficiently cooling, the discharge of filtering ponds sulfur-bearing steam can also be reduced, really realize the Efficient Cycle of energy-saving and emission-reduction and the energy
It utilizes.
The invention has the following advantages that making full use of the waste heat of washing slag water and steam in filtering ponds, the effective of the energy is realized
It recycles；The discharge of filtering ponds sulfur-bearing steam is reduced, air pollution is reduced；Drainage temperature after engine exhaust-powered refrigerator is handled is crossed to drop
It is low, the workload of cooling tower can be reduced, is realized efficiently cooling；Using the suction-type lithium bromide engine exhaust-powered refrigerator of low energy consumption,
Electrical equipment in its refrigeration cycle is mainly solution pump (circulating pump), and power only has 5kW~10kW, low with operating cost,
The advantages of high efficiency.
The present invention realizes that the utilizing waste heat for refrigeration that drainage and steam are crossed in filtering ponds utilizes under the premise of not increasing additional floor,
Environmental protection and energy saving suitable for existing blast furnace granulated slag technique are transformed.
The present invention tests and analyzes the water quality for crossing drainage, while detecting the temperature of drainage, flow, and all inspections
It surveys result and is timely fed back to blast furnace central control system, to optimization blast furnace raw material and fuel quality and proportion, optimization blast furnace operating, promote blast furnace
Direct motion plays an important role.
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 (10)
1. a kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system, which is characterized in that the blast furnace granulated slag filtering ponds waste heat system
Cold utilization system includes high-altitude chimney (1), filtering ponds (28), pump house (29), cooling tower (30) and tank (31), filtering ponds
(28) it is externally provided with the first utilizing waste heat for refrigeration unit (3), the top of filtering ponds (28) is equipped with steam discharge hole, is equipped in pump house (29)
Second utilizing waste heat for refrigeration unit (19), the steam discharge hole pass through high-temperature steam feed-line (32) and the first utilizing waste heat for refrigeration unit
(3) it connects, the high-temperature steam of steam discharge hole discharge is able to enter acting, filtering ponds in the first utilizing waste heat for refrigeration unit (3)
(28) lower part is equipped with high temperature filtration water out, the high temperature filtration water out by high temperature filtration water feed-line (33) and this
The high temperature filtration water of the connection of two utilizing waste heat for refrigeration units (19), high temperature filtration water out discharge is able to enter second utilizing waste heat for refrigeration
Acting in unit (19).
2. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 1 utilizes system, which is characterized in that the blast furnace water
Slag filtering ponds utilizing waste heat for refrigeration using system further include first to refrigerant intake pipeline (34), first to refrigerant efferent duct
Line (35), slag-water slurry discharge-channel (36) and condensed water feed-line (37), first to refrigerant intake pipeline (34)
In be able to enter in the first utilizing waste heat for refrigeration unit (3) and freezed and from first to refrigerant export pipeline to refrigerant
(35) it is discharged, the high-temperature steam of steam discharge hole discharge is able to enter in the first utilizing waste heat for refrigeration unit (3) acting and from condensation
Water feed-line (37) discharge, the both ends of slag-water slurry discharge-channel (36) respectively with high-altitude chimney (1) and filtering ponds (28)
Connection, the condensed water that condensed water feed-line (37) can be discharged for slag-water slurry discharge-channel (36) are sent into filtering ponds
(28)。
3. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 2 utilizes system, which is characterized in that the blast furnace water
Slag filtering ponds utilizing waste heat for refrigeration further includes air-conditioner set (38) using system, and condensed water feed-line (37) passes through discharge of steam pipeline
(27) it is connect with high-altitude chimney (1), the first normal-temperature water outlet company to refrigerant intake pipeline (34) and air-conditioner set (38)
It connects, first connect to refrigerant export pipeline (35) with the chilled water inlet of air-conditioner set (38), and first is defeated to refrigerant
Pipeline (35) is equipped with electric butterfly valve (4) and Hand-operated butterfly valve (5) out.
4. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 2 utilizes system, which is characterized in that first waste heat
An at least engine exhaust-powered refrigerator is equipped in refrigeration unit (3).
5. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 1 utilizes system, which is characterized in that high-temperature steam is defeated
Pipeline (32) are sent to be equipped with air-introduced machine.
6. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 1 utilizes system, which is characterized in that the blast furnace water
Slag filtering ponds utilizing waste heat for refrigeration using system further include second to refrigerant intake pipeline (39), second to refrigerant efferent duct
Line (40) and filter at low temperature water feed-line (41), second to can be into refrigerant in refrigerant intake pipeline (39)
Enter and is freezed in the second utilizing waste heat for refrigeration unit (19) and be discharged from second to refrigerant export pipeline (40), high temperature filtration water
High temperature filtration water in feed-line (33) is able to enter in the second utilizing waste heat for refrigeration unit (19) acting and from filter at low temperature water
Feed-line (41) discharge.
7. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 6 utilizes system, which is characterized in that the blast furnace water
Slag filtering ponds utilizing waste heat for refrigeration further includes air-conditioner set (38) using system, and second to refrigerant intake pipeline (39) and air conditioner
The normal-temperature water outlet of group (38) connects, the second chilled water inlet company to refrigerant export pipeline (40) and air-conditioner set (38)
It connects, filter at low temperature water feed-line (41) is connect with cooling tower (30), and cooling tower (30) is located at the top of tank (31).
8. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 7 utilizes system, which is characterized in that second waste heat
It is equipped with an at least engine exhaust-powered refrigerator in refrigeration unit (19), is successively arranged thermometer on high temperature filtration water feed-line (33)
(12), flowmeter (13), Hand-operated butterfly valve (14), heat-exchanger pump (15), check valve (16), electric butterfly valve (17) and Hand-operated butterfly valve
(18), second to be successively arranged Hand-operated butterfly valve (7), electric butterfly valve (8), check valve (9), hand on refrigerant export pipeline (40)
Butterfly valve (10) and electric butterfly valve (11) are moved, tower pump (20) and Hand-operated butterfly valve are successively arranged on filter at low temperature water feed-line (41)
(21), tank (31) is connected with washing slag water discharge pipe (42), and washing slag water discharge pipe is successively arranged Hand-operated butterfly valve on (42)
(22), slag flushing pump (23), check valve (24), electric butterfly valve (25) and Hand-operated butterfly valve (26).
9. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 1 utilizes system, which is characterized in that filtering ponds (28)
Interior to be equipped with filter layer (43), the top of filtering ponds (28) is equipped with the removable vapour hood (6) that can close the filtering ponds (28).
10. blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration according to claim 1 utilizes system, which is characterized in that high temperature filtration
Water feed-line (33), which is equipped with, tests and analyzes device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811609265.6A CN109487019A (en) | 2018-12-27 | 2018-12-27 | A kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811609265.6A CN109487019A (en) | 2018-12-27 | 2018-12-27 | A kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910030A (en) * | 2020-06-07 | 2020-11-10 | 广东韶钢松山股份有限公司 | Blast furnace slag flushing water and exhaust steam waste heat utilization system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203128596U (en) * | 2013-01-23 | 2013-08-14 | 中冶南方工程技术有限公司 | Efficient blast furnace slag-washing water waste heat recycling system adopting bottom-filtration process |
| CN103981306A (en) * | 2014-05-25 | 2014-08-13 | 北京首钢国际工程技术有限公司 | Method and device for recycling waste heat in molten slag water quenching and granulating process of ironmaking blast furnace |
| CN209322916U (en) * | 2018-12-27 | 2019-08-30 | 中冶京诚工程技术有限公司 | A kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system |
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2018
- 2018-12-27 CN CN201811609265.6A patent/CN109487019A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203128596U (en) * | 2013-01-23 | 2013-08-14 | 中冶南方工程技术有限公司 | Efficient blast furnace slag-washing water waste heat recycling system adopting bottom-filtration process |
| CN103981306A (en) * | 2014-05-25 | 2014-08-13 | 北京首钢国际工程技术有限公司 | Method and device for recycling waste heat in molten slag water quenching and granulating process of ironmaking blast furnace |
| CN209322916U (en) * | 2018-12-27 | 2019-08-30 | 中冶京诚工程技术有限公司 | A kind of blast furnace granulated slag filtering ponds utilizing waste heat for refrigeration utilizes system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910030A (en) * | 2020-06-07 | 2020-11-10 | 广东韶钢松山股份有限公司 | Blast furnace slag flushing water and exhaust steam waste heat utilization system |
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