CN201224735Y - Metallurgy slag water quenching processing unit - Google Patents
Metallurgy slag water quenching processing unit Download PDFInfo
- Publication number
- CN201224735Y CN201224735Y CNU200820032265XU CN200820032265U CN201224735Y CN 201224735 Y CN201224735 Y CN 201224735Y CN U200820032265X U CNU200820032265X U CN U200820032265XU CN 200820032265 U CN200820032265 U CN 200820032265U CN 201224735 Y CN201224735 Y CN 201224735Y
- Authority
- CN
- China
- Prior art keywords
- steam
- water
- steam turbine
- hot water
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/072—Tanks to collect the slag, e.g. water tank
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
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- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a metallurgical slag quenching processing plant belonging to the field of metallurgical slag processing, particularly relates to a processing plant of blast furnace slag. The utility model comprises a granulating device, a dehydration plant and a sedimentation tank; a flushing cinder hot-water generating set is arranged at the rear of the sedimentation tank. The flushing cinder hot-water generating set is connected with a hot water pump, an expansion tank, a steam separator and a steam turbine in sequence by pipelines; the steam turbine is connected with a generator through a transmission shaft; the hot water pump can pump the hot water into the expansion tank from the sedimentation tank for generating low pressure steam after expansion; the low pressure steam after being separated by the steam separator is delivered into the steam turbine for driving the steam turbine to run, and the steam turbine will drive the generator to generate electricity. The steam turbine is connected with a condenser at the rear, and the exhaust steam from the steam turbine is entered into the condenser and is mixed with the cooling water to condense into condensed water, and then which is entered into a water cooling pond; a trapping device is respectively arranged at the steam separator and the expansion tank to deliver the condensed water into the water cooling pond; the cooling water in the water cooling pond is transported to the granulating device for being used.
Description
Technical field
The utility model belongs to the metallurgical cinder process field, relates in particular to the treatment unit of iron-smelting blast furnace slag.
Background technology
At present, handle blast furnace slag both at home and abroad and adopt water quenching and dried slag method substantially.More serious because of the environmental pollution of dried slag method, resource utilization is low seldom to be used.Water quenching mainly contains Yin Bafa (INBA), figure daraf(reciprocal of farad) (TYNA), end filter method (OCP), Lhasa method (RASA).The Yin Bafa technical process is: blast furnace slag flows into Punched box by the slag ditch, be washed into grain slag through the pressure water of Punched box and enter water slag groove, drum filter carries out the pulp water separation then, grain slag after the dehydration is transported by conveyor, flushing cinder water under filtering flows into settling tank through the funnel that catchments, and delivers to Punched box through the slag flushing pump pressurization again and uses for flushing cinder.The blast furnace slag of figure daraf(reciprocal of farad) mechanical fragmentation earlier shrend again, then through the water trap dehydration, slag transports filtering pulp water by conveyor and flows into settling tank, delivers to Punched box through the slag flushing pump pressurization again and uses for flushing cinder.Grain slag flows into settling tank behind the blast furnace cinder water quenching of end filter method, is hung grain slag in the pond grabbed out by grab bucket to be stacked at the dehydration of slag field, delivers to Punched box through the slag flushing pump pressurization again after pool inner water and suspended substance filter through filtering layer and uses for flushing cinder.Slag behind the method slag water quenching of Lhasa will concentrate the back and deliver to the dewatering tank dehydration by the slag stock pump in the coarse grain separator tank, the grain slag outward transport, and filtered water flows into settling tank, delivers to Punched box through the slag flushing pump pressurization again and uses for flushing cinder.These four kinds of methods are by slag granulation plant, dewatering unit, and several parts of settling tank are formed, and the hot water in the settling tank has about 90 ℃, and the heat energy of water is directly used in shrend without utilization, wastes energy.
Summary of the invention
In order to overcome the defective that prior art exists, the purpose of this utility model is to provide a kind of metallurgical cinder water quenching processing unit that can make full use of hot water for slag flushing heat energy.
For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of metallurgical cinder water quenching processing unit comprises granulating device, dewatering unit, settling tank, and its spy is provided with the hot water for slag flushing power generation assembly behind settling tank.Described hot water for slag flushing power generation assembly is linked in sequence hot water pump, flash vessel, steam separator, steam turbine by pipeline, steam turbine connects generator by transmission shaft, hot water pump produces low-pressure steam after from described settling tank hot water being pumped into the flash vessel dilatation, low-pressure steam enters steam turbine and promotes its rotation after separating through steam separator, and steam turbine drives generator for electricity generation.
For making full use of blast furnace gas, improve generating efficiency, a gas-operated thermal bath facility is set between described steam separator and steam turbine.Described gas-operated thermal bath facility is made up of steam-pipe, body of heater, burner, and steam-pipe passes body of heater, is located at the intravital burner of stove and utilizes blast furnace gas to heat to steam-pipe.
For improving slag granulation rate, reduce water loss simultaneously, behind described steam turbine, connect condenser, the surplus vapour that steam turbine is discharged enters the condensed water input water cooling pond that condenser becomes with the water coolant condensation by mixing; Steam separator and flash vessel are installed steam trap connection respectively water of condensation are imported water cooling pond; In the water cooling pond water coolant through pump and pipe-line transportation to slag particle makeup put use.
The utility model pumps into flash vessel with 90 ℃ hot water in the settling tank, obtain having the steam and the cold water below 60 ℃ of certain heat content behind the reduction vaporization, after separating through steam separator, steam obtains humidity and is 0.5% steam, steam enters the steam turbine pushing turbine and rotates, drive generator for electricity generation, 3600 kilowatt-hours of per hour generating electricity.The surplus vapour that steam turbine is discharged enters condenser and water coolant mixing condensation, become the defeated water cooling pond of getting back to of condensed water, the water of condensation of flash vessel and steam trap is also failed back water cooling pond, the cold water use of quenching of supplying water in the water cooling pond, cold water temperature is below 60 ℃, the slag water quenching rate can be improved, discharge of steam, water saving can be reduced again.After the gas-operated thermal bath facility heating, vapor temperature and pressure increase, and can improve generating efficiency, can make full use of blast furnace gas again, reduce discharging, reduce atmospheric pollution.
Description of drawings
In conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1: metallurgical cinder water quenching processing unit synoptic diagram.
Fig. 2: gas-operated thermal bath facility synoptic diagram.
1---granulating device 2---cinder-flushing groove 3---dewatering unit 4---belt conveyor
5---feed bin 6---settling tank 7---hot water pump 8---flash vessels
9---steam separator 10---steam turbine 11---generators
12---condenser 13---water cooling pond 14---slag flushing pump 15---gas-operated thermal bath facilities
16---steam-pipe 17---burner 18---bodies of heater
Embodiment
As shown in Figure 1, after cinder-flushing groove 2 flows into dewatering unit 3, the grain slag after the dehydration is sent into feed bin 5 or stockyard by belt conveyor 4 to blast furnace slag by granulating device 1 granulation shrend; Flow into settling tank 6 precipitations by the pulp water under dewatering unit 3 filters, hot water about 90 ℃ of post precipitation is pumped into by hot water pump 7 that to obtain temperature after flash vessel 8 dilatations be that 69 ℃, pressure are the low-pressure steam of 0.03MPa, after separating through steam separator 9, low-pressure steam obtains humidity and is 0.5% dry steam, dry steam enters steam turbine 10 pushing turbines and rotates, 11 generatings of turbine drive generator, a 4000m
3Blast furnace, 3600 kilowatt-hours of per hour generating electricity.
Also can find out by Fig. 1, steam turbine 11 backs connect condenser 12, the surplus vapour of being discharged by steam turbine enters condenser and the water coolant condensation by mixing becomes in the condensed water input water cooling pond 13, and flash vessel 8 and steam separator 9 also are provided with steam trap connection water of condensation is imported in the water cooling pond 13.About about 60 ℃ of cold water temperature in the water cooling pond, 90 ℃ of hot water of relative settling tank, steam output reduces, for 4000m
3Blast furnace, every day can water saving about 200 tons.Slag flushing pump 14 pumps into granulating device 1 with the cold water in the water cooling pond 13 and uses for its shrend and flushing cinder, because water temperature is low than water temperature in the settling tank 6, can improve the punching out rate of grain slag.
Though blast furnace is provided with furnace roof top pressure power generation now, blast furnace gas diffuses rate to be reduced greatly, but the situation that exists blast furnace gas to diffuse, for reducing diffusing of blast furnace gas, reduce environmental pollution, make full use of the energy, as shown in Figure 1, between steam separator 9 and steam turbine 10, gas-operated thermal bath facility 15 is set.As shown in Figure 2, gas-operated thermal bath facility 15 is made up of steam-pipe 16, body of heater 18, burner 17, and steam-pipe 17 passes body of heater 18, and the burner 17 that is located in the body of heater 18 utilizes blast furnace gas to give steam-pipe 16 heating, low-pressure steam temperature, pressure are increased, improve generating efficiency.
Claims (5)
1, metallurgical cinder water quenching processing unit comprises granulating device, dewatering unit, settling tank, it is characterized in that: the hot water for slag flushing power generation assembly is set behind settling tank.
2, metallurgical cinder water quenching processing unit as claimed in claim 1, it is characterized in that: described hot water for slag flushing power generation assembly is linked in sequence hot water pump, flash vessel, steam separator, steam turbine by pipeline, steam turbine connects generator by transmission shaft, hot water pump produces low-pressure steam after from described settling tank hot water being pumped into the flash vessel dilatation, low-pressure steam enters steam turbine and promotes its rotation, the turbine drive generator for electricity generation after separating through steam separator.
3, metallurgical cinder water quenching processing unit as claimed in claim 2 is characterized in that: a gas-operated thermal bath facility is set between described steam separator and steam turbine.
4, metallurgical cinder water quenching processing unit as claimed in claim 3, it is characterized in that: described gas-operated thermal bath facility is made up of steam-pipe, body of heater, burner, and steam-pipe passes body of heater, is located at the intravital burner of stove and utilizes blast furnace gas to heat to steam-pipe.
5, as claim 2 or 3 described metallurgical cinder water quenching processing units, it is characterized in that: connect condenser behind described steam turbine, the surplus vapour that steam turbine is discharged enters the condensed water input water cooling pond that condenser becomes with the water coolant condensation by mixing; Steam separator and flash vessel are installed steam trap connection respectively water of condensation are imported water cooling pond; In the water cooling pond water coolant through pump and pipe-line transportation to slag particle makeup put use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820032265XU CN201224735Y (en) | 2008-02-22 | 2008-02-22 | Metallurgy slag water quenching processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820032265XU CN201224735Y (en) | 2008-02-22 | 2008-02-22 | Metallurgy slag water quenching processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201224735Y true CN201224735Y (en) | 2009-04-22 |
Family
ID=40597618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820032265XU Expired - Fee Related CN201224735Y (en) | 2008-02-22 | 2008-02-22 | Metallurgy slag water quenching processing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201224735Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851420A (en) * | 2012-09-12 | 2013-01-02 | 首钢总公司 | Steelmaking residual heat step recycling method |
| CN103060497A (en) * | 2013-01-08 | 2013-04-24 | 北京世纪源博科技股份有限公司 | Blast furnace slag sweeping water waste heat power generation system |
-
2008
- 2008-02-22 CN CNU200820032265XU patent/CN201224735Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851420A (en) * | 2012-09-12 | 2013-01-02 | 首钢总公司 | Steelmaking residual heat step recycling method |
| CN103060497A (en) * | 2013-01-08 | 2013-04-24 | 北京世纪源博科技股份有限公司 | Blast furnace slag sweeping water waste heat power generation system |
| CN103060497B (en) * | 2013-01-08 | 2015-02-04 | 北京世纪源博科技股份有限公司 | Blast furnace slag sweeping water waste heat power generation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20150222 |
|
| EXPY | Termination of patent right or utility model |