CN105964962A - Technological method for continuous casting circulating cooling water and casting billet waste heat utilization and system - Google Patents
Technological method for continuous casting circulating cooling water and casting billet waste heat utilization and system Download PDFInfo
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- CN105964962A CN105964962A CN201610293608.7A CN201610293608A CN105964962A CN 105964962 A CN105964962 A CN 105964962A CN 201610293608 A CN201610293608 A CN 201610293608A CN 105964962 A CN105964962 A CN 105964962A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
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Abstract
A technological method for continuous casting circulating cooling water and casting billet waste heat utilization is characterized in that part of cooling water of a continuous casting plant is led into a casting billet waste heat roasting and heating device above a casting billet roller bed by a pipeline and heated into water vapor and hot water which are conveyed to necessary places separately. A system of the technological method comprises a cold water device part, a casting billet waste heat roasting and heating device part and a collection device part, wherein the cold water device part adopts the structure that the water inlet and the water outlet of a water pump set are connected with a cooling water treatment device of the continuous casting plant and a cold water pipeline respectively; the casting billet waste heat roasting and heating device part adopts the structure that heat exchangers are arranged above a casting billet and connected with the cold water pipeline and a hot water pipeline respectively; a gas-liquid separator is connected between the hot water pipeline and a water vapor pipeline; and the collection device part is that water vapor and hot water are input into a water vapor collection device and a heated water collection device respectively. The technological method and the system have the beneficial effects that circulating cooling water of the continuous casting plant and waste heat of the continuous casting billet are utilized, external pipelines are fewer, and energy conservation and emission reduction are facilitated.
Description
Technical field
The invention belongs to metallurgical continuous casting production line field, particularly relate to slab cooling water and casting in continuous casting line
Base radiant heat utilizes.
Background technology
In metallurgical continuous casting production line, secondary cooling area for continuous casting spraying cooling water except portions under heat evaporate in addition to, major part warp
Iron scale ditch flows into scale pit, then after a series of cold water process technique, qualified water is again
Enter into continuous casting cooling system, be circulated use.The strand of casting process crystallizer aftershaping, through going out
Blank roller way, by natural cooling slow cooling to uniform temperature, typical temperature is at 850～1000 DEG C, and strand finally exists
Room temperature it is down at stacking.Substantial amounts of heat in traditional continuous casting technology, in the said process in continuous casting line
Can the most naturally distribute, make substantial amounts of heat energy waste.Therefore, by strand slow cooling on continuous casting line
The heat energy recycle of journey is this area technical issues that need to address.
Summary of the invention
It is an object of the invention to provide continuous casting recirculated cooling water and the process of strand UTILIZATION OF VESIDUAL HEAT IN and system,
Realize the Collection utilization of strand waste heat when continuous casting produces properly functioning.More than increase strand above roller-way
Hot collection device realizes, and reaches energy-saving and emission-reduction, increases the purpose of economic benefit.
The technical scheme is that the process of continuous casting recirculated cooling water and strand UTILIZATION OF VESIDUAL HEAT IN, including
Continuous casting workshop cold water process and strand UTILIZATION OF VESIDUAL HEAT IN, it is characterised in that: described continuous casting workshop cold water process
It is that a part is introduced above strand roller-way through processing the continuous casting workshop cooling water pipeline reaching water quality requirement
Strand waste heat Baking out device, continuous casting workshop cooling water be heated in strand waste heat Baking out device
Steam and hot water, the steam being heated into and hot water are respectively fed to steam collection device by pipeline and add
Steam and heating water are carried by hot-water collection's device, steam collection device and heating water collecting device respectively
At needs.
The system of the process of continuous casting recirculated cooling water of the present invention and strand UTILIZATION OF VESIDUAL HEAT IN, including cold water
Device part, strand waste heat Baking out device part and collection device part, it is characterised in that: described cold
Water device section is divided and is included continuous casting workshop cooling-water treatment apparatus, water pump group and cold water pipeline, and continuous casting workshop cools down
Water treatment facilities is provided with outlet, and the water inlet of water pump group is filled with continuous casting workshop cold water process by pipeline
The outlet put is connected, and the outlet of water pump group is connected with cold water pipeline one end, and cold water pipeline sets successively
There are filter, cold water flow meter and cold water pressure meter；Described strand waste heat Baking out device section is divided and is included casting
Blank roller way, heat exchanger, gas-liquid separator, hot water line and steam pipeline, described heat exchanger is arranged on casting
Above blank roller way, position is located relative with the strand on strand roller-way, the distance on heat exchanger distance casting blank surface
It is 100～150mm, in the supporting construction of the roller that heat exchanger is arranged on strand roller-way by structural member, heat exchange
The water inlet of device is connected with the cold water pipeline other end, the outlet water outlet pipeline of heat exchanger and hot water line
Being connected, described gas-liquid separator is connected between hot water line and steam pipeline, and steam pipeline is positioned at heat
Above water lines, steam pipeline and hot water line are respectively equipped with steam pipework choke valve and hot water line's joint
Stream valve, hot water line is additionally provided with hot water line's effusion meter and hot water line's piezometer；Described collection device portion
Point include steam collection device and heating water collecting device, hot water line and steam pipeline respectively with heating
Water collecting device is connected with steam collection device.
The system of the process of continuous casting recirculated cooling water of the present invention and strand UTILIZATION OF VESIDUAL HEAT IN, its feature exists
In: the heat exchanger of described strand waste heat Baking out device is made up of several, and several heat exchangers are along strand
Roller-way is arranged in juxtaposition, and between each two heat exchanger, spacing distance is 30mm, and each heat exchanger is provided with the most solely
Vertical water inlet and outlet, the water inlet of each heat exchanger is connected in parallel on cold water pipeline by water inlet pipeline,
The water inlet pipeline of each heat exchanger is provided with cold water pipeline choke valve, the water outlet pipeline of each heat exchanger
Being connected in parallel on hot water line, the water outlet pipeline of each heat exchanger is provided with thermometer.
The system of the process of continuous casting recirculated cooling water of the present invention and strand UTILIZATION OF VESIDUAL HEAT IN, its feature exists
In: the heat exchanger of described strand waste heat Baking out device is coil exchanger or helix tube type heat exchanger.
The workflow of the present invention is:
The cooling water of continuous casting workshop reaches qualified water quality after cooling-water treatment apparatus processes, wherein one
Point cooling water enters in continuous-cast blank cooling link, and additionally part cooling water then enters into more than strand by pump group
In heat utilization system.The cooling water of certain flow is delivered in cold water pipeline by water pump group, in cold water pipeline
Removing cooling water impurity through filter, cold water loine pressure is P1, flow F1.Under the pressure of water pump group
Cooling water, in choke valve respectively enters open heat exchanger, carries out water and the strand of high temperature on continuous casting roller-way
Heat exchange.As high in on-the-spot continuous casting casting speed, heat exchanger outlet temperature does not reaches desired value, can regulate joint
Stream valve reduces the flow of water in heat exchanger, makes up to desired value；As low in on-the-spot continuous casting casting speed, heat exchange
Device outlet temperature is higher than desired value, then can regulate choke valve and strengthen the flow of water in heat exchanger, make up to
Desired value.
Multiple heat exchanger is used to be arranged in juxtaposition along strand roller-way, can be maximum according to the ejection speed of strand roller-way
The heat time heating time of the increasing heat exchanging WATER AS FLOW MEDIUM of limit, promote heat transfer effect.The quantity of heat exchanger is according to strand
The length of roller-way determines.Continuous casting billet in strand roller-way in normal ejection, casting blank surface temperature one
As at 850～1000 DEG C, by heat exchanger, by aqueous medium heating or even boiling, produce substantial amounts of hot water with
Steam.Hot water and steam can well be separated by gas-liquid separator, and steam pipework is just being positioned at hot water line
Top, it is simple to the steam that heat exchanger produces separates with hot water.
The invention has the beneficial effects as follows:
1, continuous casting workshop circulating cooling water reuse is achieved；
2, the Collection utilization of continuous casting billet waste heat is achieved；
3, achieve workshop recirculated cooling water to gather materials on the spot the utilization that combines with strand waste heat, decrease exterior tube
The input on road, has reached the recycling of the energy in commercial production and has reduced discharging purpose with industry energy conservation, added
Economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of continuous casting recirculated cooling water and the process of strand UTILIZATION OF VESIDUAL HEAT IN
Fig. 2 is that strand waste heat Baking out device installs section structure schematic diagram on roller-way
In figure: 1 heat exchanger 2 strand 3 roller 4 cold water pipeline 5 hot water line 6 water
Vapor line 7 water pump group 8 filter 9 cold water pipeline choke valve 10 hot water line throttles
Valve 11 steam pipework choke valve F effusion meter P piezometer T thermometer S gas
Liquid/gas separator I water-cooling device part ii strand waste heat Baking out device part III is collected
Device part.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
Continuous casting recirculated cooling water and strand bootstrap system, dry including water-cooling device part I, strand waste heat
Roasting heating mechanism portion II and collection device part III, water-cooling device part I includes at continuous casting workshop cooling water
Reason device, water pump group 7 and cold water pipeline 4, continuous casting workshop cooling-water treatment apparatus is provided with outlet, water pump
The water inlet of group 7 is connected with the outlet on continuous casting workshop cooling-water treatment apparatus by pipeline, water pump group 7
Outlet be connected with cold water pipeline 4 one end, cold water pipeline 4 is sequentially provided with filter 8, cold water flow meter
F1With cold water pressure meter P1；Strand waste heat Baking out device part ii includes strand roller-way, heat exchanger 1, liquid
Separator S, hot water line 5 and steam pipeline 6, heat exchanger 1 is arranged on above strand roller-way, and position exists
Relative with the strand 2 on strand roller-way locating, the distance on heat exchanger 1 distance casting blank 2 surface is 100～150mm,
Heat exchanger 1 is arranged in the supporting construction of roller 3 of strand roller-way by structural member, the water inlet of heat exchanger 1
Mouth is connected with cold water pipeline 4 other end, the outlet water outlet pipeline of heat exchanger 1 and hot water line 5 phase
Even, gas-liquid separator S is connected between hot water line 5 and steam pipeline 6, and steam pipeline 6 is positioned at
Above hot water line 5, steam pipeline 6 and hot water line 5 are respectively equipped with steam pipework choke valve 11 He
Hot water line's choke valve 10, hot water line 5 is additionally provided with hot water line effusion meter F2With hot water line's piezometer
P2；Collection device part III includes that steam collection device and heating water collecting device, hot water line 5 and water steam
Air pipe 6 is connected with heating water collecting device and steam collection device respectively.
Heat exchanger 1 is made up of several, and several heat exchangers 1 are arranged in juxtaposition along strand roller-way, and each two is changed
Between hot device 1, spacing distance is 30mm, and each heat exchanger 1 is provided with the most independent water inlet and outlet,
The water inlet of each heat exchanger 1 is connected in parallel on cold water pipeline 4 by water inlet pipeline, each heat exchanger 1
Water inlet pipeline be provided with cold water pipeline choke valve 9, the water outlet pipeline of each heat exchanger 1 is connected in parallel on hot water
On pipeline 5, the water outlet pipeline of each heat exchanger 1 is provided with thermometer T1、T2……Tn.Heat exchanger 1
It is coil exchanger or helix tube type heat exchanger.
Continuous casting recirculated cooling water and the process of strand bootstrap system, cool down at water including continuous casting workshop
Reason and strand UTILIZATION OF VESIDUAL HEAT IN, a part is reached water quality requirement through processing by continuous casting workshop cold water process
Continuous casting workshop cooling water pipeline introduces the strand waste heat Baking out device above strand roller-way, continuous casting workshop
Cooling water is heated into steam and hot water in strand waste heat Baking out device, the steam being heated into and heat
Water is respectively fed to steam collection device and heating water collecting device, steam collection device and adding by pipeline
Steam and heating water are respectively delivered to need place by hot-water collection's device.
Claims (4)
1. continuous casting recirculated cooling water and the process of strand UTILIZATION OF VESIDUAL HEAT IN, including continuous casting workshop cold water process
With strand UTILIZATION OF VESIDUAL HEAT IN, it is characterised in that: described continuous casting workshop cold water process is through processing by a part
The continuous casting workshop cooling water pipeline reaching water quality requirement introduces the strand waste heat Baking out above strand roller-way
Device, continuous casting workshop cooling water is heated into steam and hot water in strand waste heat Baking out device, heating
The steam and the hot water that become are respectively fed to steam collection device and heating water collecting device by pipeline, and water steams
Steam and heating water are respectively delivered to need place by gas collection device and heating water collecting device.
2. continuous casting recirculated cooling water described in claim 1 and the system of the process of strand UTILIZATION OF VESIDUAL HEAT IN, wrap
Include water-cooling device part (I), strand waste heat Baking out device part (II) and collection device part (III),
It is characterized in that: described water-cooling device part (I) includes continuous casting workshop cooling-water treatment apparatus, water pump group
(7) and cold water pipeline (4), continuous casting workshop cooling-water treatment apparatus is provided with outlet, water pump group (7)
Water inlet be connected with the outlet on continuous casting workshop cooling-water treatment apparatus by pipeline, water pump group (7)
Outlet is connected with cold water pipeline (4) one end, and cold water pipeline (4) is sequentially provided with filter (8), cold
Water ga(u)ge (F1) and cold water pressure meter (P1)；Described strand waste heat Baking out device part (II) is wrapped
Include strand roller-way, heat exchanger (1), gas-liquid separator (S), hot water line (5) and steam pipeline (6),
Described heat exchanger (1) is arranged on above strand roller-way, and position is relative with the strand (2) on strand roller-way
Place, the distance on heat exchanger (1) distance casting blank (2) surface is 100～150mm, and heat exchanger (1) is by knot
Component is arranged in the supporting construction of roller (3) of strand roller-way, the water inlet of heat exchanger (1) and cold water
Pipeline (4) other end is connected, the outlet water outlet pipeline of heat exchanger (1) and hot water line (5) phase
Even, described gas-liquid separator (S) is connected between hot water line (5) and steam pipeline (6), and water steams
Air pipe (6) is positioned at upper point of hot water line (5) top, steam pipeline (6) and hot water line (5)
Not being provided with steam pipework choke valve (11) and hot water line's choke valve (10), hot water line also sets on (5)
There is hot water line effusion meter (F2) and hot water line piezometer (P2)；Described collection device part (III) is wrapped
Include steam collection device and heating water collecting device, hot water line (5) and steam pipeline (6) difference
It is connected with heating water collecting device and steam collection device.
The system of the process of continuous casting recirculated cooling water and strand UTILIZATION OF VESIDUAL HEAT IN the most according to claim 2,
It is characterized in that: the heat exchanger (1) of described strand waste heat Baking out device is made up of several, several
Heat exchanger (1) is arranged in juxtaposition along strand roller-way, and between each two heat exchanger (1), spacing distance is 30mm,
Each heat exchanger (1) is provided with the most independent water inlet and outlet, the water inlet of each heat exchanger (1)
Mouth is connected in parallel on cold water pipeline (4) by water inlet pipeline, the water inlet pipeline of each heat exchanger (1)
Being provided with cold water pipeline choke valve (9), the water outlet pipeline of each heat exchanger (1) is connected in parallel on hot water line (5)
On, the water outlet pipeline of each heat exchanger (1) is provided with thermometer (T1、T2……Tn)。
The system of the process of continuous casting recirculated cooling water and strand UTILIZATION OF VESIDUAL HEAT IN the most according to claim 3,
It is characterized in that: the heat exchanger (1) of described strand waste heat Baking out device is coil exchanger or screwed pipe
Formula heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293608.7A CN105964962B (en) | 2016-05-05 | 2016-05-05 | Continuous casting recirculated cooling water and the process and system of strand UTILIZATION OF VESIDUAL HEAT IN |
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| CN201610293608.7A CN105964962B (en) | 2016-05-05 | 2016-05-05 | Continuous casting recirculated cooling water and the process and system of strand UTILIZATION OF VESIDUAL HEAT IN |
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| CN105964962B CN105964962B (en) | 2018-05-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056012A (en) * | 2017-05-18 | 2017-08-18 | 中冶华天工程技术有限公司 | A kind of strand annealing process dries the method and system of pickling sludge |
| CN107598111A (en) * | 2017-09-29 | 2018-01-19 | 四川德胜集团钒钛有限公司 | A kind of continuous casting cooling Water Sproading and afterheat utilizing system |
| CN108480582A (en) * | 2018-04-28 | 2018-09-04 | 邯郸钢铁集团有限责任公司 | The system and collection method of water vapour are generated during smartphone strand rapid cooling |
| CN109175284A (en) * | 2018-09-10 | 2019-01-11 | 武汉科技大学 | A kind of efficient, energy-efficient continuous casting secondary cooling method |
| CN109732050A (en) * | 2019-03-06 | 2019-05-10 | 南京钢铁股份有限公司 | A kind of continuous casting machine-cut front roller-way cooling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107056012A (en) * | 2017-05-18 | 2017-08-18 | 中冶华天工程技术有限公司 | A kind of strand annealing process dries the method and system of pickling sludge |
| CN107598111A (en) * | 2017-09-29 | 2018-01-19 | 四川德胜集团钒钛有限公司 | A kind of continuous casting cooling Water Sproading and afterheat utilizing system |
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| CN108480582B (en) * | 2018-04-28 | 2023-04-28 | 邯郸钢铁集团有限责任公司 | System and method for intelligently collecting water vapor generated in casting blank rapid cooling process |
| CN109175284A (en) * | 2018-09-10 | 2019-01-11 | 武汉科技大学 | A kind of efficient, energy-efficient continuous casting secondary cooling method |
| CN109732050A (en) * | 2019-03-06 | 2019-05-10 | 南京钢铁股份有限公司 | A kind of continuous casting machine-cut front roller-way cooling system |
| CN109732050B (en) * | 2019-03-06 | 2023-11-03 | 南京钢铁股份有限公司 | Cooling system for roller way of continuous casting machine before cutting |
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