CN201785406U - Liquid slag cooling device - Google Patents
Liquid slag cooling device Download PDFInfo
- Publication number
- CN201785406U CN201785406U CN2010205143460U CN201020514346U CN201785406U CN 201785406 U CN201785406 U CN 201785406U CN 2010205143460 U CN2010205143460 U CN 2010205143460U CN 201020514346 U CN201020514346 U CN 201020514346U CN 201785406 U CN201785406 U CN 201785406U
- Authority
- CN
- China
- Prior art keywords
- steam
- liquid slag
- water
- cooling
- 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 - Lifetime
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Classifications
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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
- C21B2400/02—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
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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
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
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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
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/074—Tower structures for cooling, being confined but not sealed
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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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- 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
Abstract
The utility model discloses a liquid slag cooling device, which comprises a steam cooling chamber (2). The top of the steam cooling chamber (2) is provided with a safe valve (1), a liquid slag pipe slot (4) which is provided with a liquid slag granulation nozzle (5) extends into the steam cooling chamber (2), the upper portion of the steam cooling chamber (2) is connected onto the bottom of the steam cooling chamber (2) after being orderly connected with a gas-water heat exchanger (11) and a steam circulating fan (9) through pipelines, and a cooling water nozzle (3) is arranged above the liquid slag granulation nozzle (5). The liquid slag cooling device cools liquid slag by adopting cooling water and water steam, accelerates the cooling speed of the liquid slag, and obtains dried slag with high activity. The liquid slag cooling device recycles sensible heat of the liquid slag through the steam-water heat exchanger between low-voltage steam and water by adopting heat of the liquid slag to produce high-voltage steam. The liquid slag cooling device can recycle sensible heat of the liquid slag on the basis of guaranteeing the cooling rate of the liquid slag, simplifies a slag water flushing system and belongs to the novel technology of energy conservation and emission reduction.
Description
Technical field
The utility model relates to the treatment unit of slag in a kind of pig iron smelting.
Background technology
In metallurgical production, can produce a large amount of liquid slag, such as blast furnace slag and converter slag.These slags from discharging, have very big sensible heat in the mode of liquid state.Prior art mainly adopts method cooling liquid slag such as flush slag, hot vexed method, and a large amount of waste heat of liquid slag can't reclaim, and complicated water treatment system also need be set.Along with the attention of iron and steel enterprise to energy-conserving and emission-cutting technology, the dry granulation of liquid slag, cooling and heat recovery technology are paid attention to very much.
Liquid slag granulation, the cooling technology of present research and development; the general methods such as runner, injection that adopt are dispersed into small droplets with the liquid slag of liquid state; utilize gaseous media coolings such as air then, then heated air is produced steam by waste heat boiler, reclaim the sensible heat of liquid slag.Adopt existing liquid slag process for cooling, because the specific heat of air is little, the speed of cooling of liquid slag is lower, can influence the activity of liquid slag, causes the use range of slag limited, is unfavorable for the recycle of slag, has brought new problem.
The utility model content
The utility model purpose is the deficiency at existing liquid slag dry granulation and cooling technology, proposes to utilize the bigger water of specific heat, water vapor to cool off the technology of the liquid slag of granulation, and finally produces the liquid slag refrigerating unit that superheated vapour reclaims liquid slag sensible heat.
The purpose of this utility model is achieved through the following technical solutions:
A kind of liquid slag refrigerating unit; comprise that the top has the steam cooling chamber of safety valve; liquid slag tube seat with liquid slag granulation nozzle stretches in the steam cooling chamber, after top, steam cooling chamber connects steam water heat exchanger and steam cycle blower fan successively by pipeline, is connected to the bottom of steam cooling chamber.
As further optimization,, between described steam cooling chamber and the vapor-water heat exchanger steam purifier is set for purified steam.
For the leakage loss of replenishing vapour cooling system steam etc., a water coolant nozzle is set on liquid slag nozzle top, the water coolant that the water coolant nozzle sprays into spills down the back and directly cools off the liquid slag drop.
Described steam purifier is a kind of inertial separator, such as cyclonic separator.
Be provided with the pipeline that communicates with external pipe in the described steam water heat exchanger, pipe interior is a high pressure water, and the outside is a low-pressure superheated steam.
Need to prove, in the utility model " high pressure " at steam cooling chamber " low pressure " steam, concrete pressure can determine according to the particular case of iron and steel enterprise's steam system.
The beneficial effects of the utility model are:
(1) this device is very little to the demand of water coolant, only sprays into a spot of water leakage loss of steam vapour system as a supplement by the water coolant nozzle segment, is " dry method " cooling technology of a kind of water saving;
(2) this device is the water and the steam of high specific heat to the heat-eliminating medium of slag drop and red heat solid slag, and the rate of cooling height reaches flushing cinder refrigerative cooling performance, the dried slag activation characteristic that obtains is good, be convenient to recycle, and the dried slag that obtains need not dewater, granularity is good, it is convenient to utilize again;
(3) the steam water heat exchanger part of this device, the interchanger both sides are the high specific heat medium, and the heat exchange efficiency height helps the miniaturization of heat-exchange equipment, is convenient to on-the-spot the layout.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure, part 1 is a safety valve; Part 2 is the steam cooling chamber; Part 3 is the water coolant nozzle; Part 4 is the liquid slag tube seat; Part 5 is a liquid slag granulation nozzle; Part 6 is a freeboard of fluidized bed; Part 7 is an emulsion zone; Part 8 is cold dried slag; Part 9 is the steam cycle blower fan; Part 10 is a water; Part 11 is a steam water heat exchanger; Part 12 is a superheated vapour; Part 13 is a steam purifier; Part 14 is a flue dust.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1,
Be heat-eliminating medium with the superheated vapour in steam cooling chamber 2, the pressure of steam cooling chamber slightly equals a normal atmosphere, and the safety that a safety valve 1 guarantees the steam cooling chamber is set in that steam cooling is indoor.Steam cooling chamber 2 is an airtight substantially structure, has adorned lagging material all around, during system works, is full of the superheated low-pressure steam in the steam cooling chamber 2.
During work, liquid slag is transported in the steam cooling chamber 2 by liquid slag tube seat 4, liquid slag nozzle 5, and 5 places are dispersed into little drop at nozzle.For the leakage loss of replenishing vapour cooling system steam etc., a water coolant nozzle 3 is set on liquid slag nozzle top, the water coolant that water coolant nozzle 3 sprays into spills down the back and directly cools off the liquid slag drop.Under equal conditions, the specific heat of water vapor is much larger than the specific heat of air, and the rate of cooling of liquid slag is greater than the rate of cooling of utilizing air, and liquid slag cooling back is active higher, can be used to make recycles such as cement.The freeboard of fluidized bed 6 of 2 bottoms, the steam cooling of flowing through after liquid slag granulation chamber, emulsion zone 7 backs are discharged by slag-drip opening.Round-robin steam is by behind emulsion zone 7, freeboard of fluidized bed 6 and the nozzle region, and temperature raises, and 2 flow out from the steam cooling chamber, isolate the flue dust that is mingled with in the steam by steam purifier 13, enter steam water heat exchanger 11.In the present embodiment, pyritous low-pressure superheated steam in steam water heat exchanger 11 internal pipelines, exocoel is a water 10, water 10 forms superheated vapour 12 in steam water heat exchanger 11 heat absorptions, and then recycles.Behind steam water heat exchanger 11 internal heating high pressure waters 10, low-pressure steam is delivered to 2 bottoms, steam cooling chamber, circulating cooling liquid attitude slag again by 9 pressurizations of steam cycle blower fan.The high pressure water part also can be arranged economizer section, evaporator section and superheat section again, and links to each other with drum, forms a complete afterheat boiler system.
The steam purifier 13 of this device is a cyclonic separator, utilizes the inertial separation of steam flow to go out flue dust 14 in the vapour stream, also can adopt other to utilize the gas-solid separating device of inertia.
The bottom of steam cooling chamber 2 is the freeboard of fluidized bed 6 and the emulsion zone 7 of solid slag, changes the thickness of slag blanket by the cold dried slag 8 deslagging speed of control dreg removing system, and then changes steam cycle mobile resistance, the rate of cooling of Control Circulation steam, and controllability is strong.
This device utilizes cooling water and steam cooling liquid slag, quickens the speed of cooling of liquid slag, cooling water inflow is dropped to minimum, obtains highly active dried slag; By the steam water heat exchanger between low-pressure steam and the water, utilize the heat of liquid slag to produce high pressure steam, reclaim the sensible heat of liquid slag.Utilizing this device, can reclaim liquid slag sensible heat on the basis that guarantees the liquid slag rate of cooling, and simplify the flushing cinder water system, is a kind of new technology of energy-saving and emission-reduction.
This device also is suitable for the processing of other high-temperature liquid state slags, and the concrete structure variation of vapor separation device and vapor heat exchanger all belongs to protection domain of the present utility model.
Claims (5)
1. liquid slag refrigerating unit; comprise that the top has the steam cooling chamber (2) of safety valve (1); liquid slag tube seat (4) with liquid slag granulation nozzle (5) stretches in the steam cooling chamber (2); after top, steam cooling chamber (2) connects steam water heat exchanger (11) and steam cycle blower fan (9) successively by pipeline, be connected to the bottom of steam cooling chamber (2).
2. liquid slag refrigerating unit as claimed in claim 1 is characterized in that: between described steam cooling chamber (2) and the vapor-water heat exchanger (11) steam purifier (13) is set.
3. liquid slag refrigerating unit as claimed in claim 1 is characterized in that: the top of described liquid slag granulation nozzle (5) is provided with water coolant nozzle (3).
4. liquid slag refrigerating unit as claimed in claim 2 is characterized in that: described steam purifier (13) is an inertial separator.
5. as the arbitrary described liquid slag refrigerating unit of claim 1 to 4, it is characterized in that: described steam water heat exchanger is provided with the pipeline that communicates with external pipe in (11), and pipe interior is a high pressure water, and the outside is a low-pressure superheated steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205143460U CN201785406U (en) | 2010-09-02 | 2010-09-02 | Liquid slag cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205143460U CN201785406U (en) | 2010-09-02 | 2010-09-02 | Liquid slag cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201785406U true CN201785406U (en) | 2011-04-06 |
Family
ID=43817380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205143460U Expired - Lifetime CN201785406U (en) | 2010-09-02 | 2010-09-02 | Liquid slag cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201785406U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212627A (en) * | 2011-04-27 | 2011-10-12 | 四川大西绿建科技有限公司 | Device for crushing steel slag and recovering heat |
| CN103557711A (en) * | 2013-11-05 | 2014-02-05 | 南京凯盛开能环保能源有限公司 | Molten slag rapid cooling, granulation and waste heat recovery power generation system and method |
| CN107677146A (en) * | 2017-11-03 | 2018-02-09 | 山东中天国际工程有限公司 | Industrial chlorinations sodium fusion salt is atomized cooling device |
| CN110218825A (en) * | 2019-07-03 | 2019-09-10 | 河北科技大学 | A kind of slag treatment system and processing method |
-
2010
- 2010-09-02 CN CN2010205143460U patent/CN201785406U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212627A (en) * | 2011-04-27 | 2011-10-12 | 四川大西绿建科技有限公司 | Device for crushing steel slag and recovering heat |
| CN102212627B (en) * | 2011-04-27 | 2013-01-02 | 四川大西绿建科技有限公司 | Device for crushing steel slag and recovering heat |
| CN103557711A (en) * | 2013-11-05 | 2014-02-05 | 南京凯盛开能环保能源有限公司 | Molten slag rapid cooling, granulation and waste heat recovery power generation system and method |
| CN103557711B (en) * | 2013-11-05 | 2015-03-25 | 南京凯盛开能环保能源有限公司 | Molten slag rapid cooling, granulation and waste heat recovery power generation system and method |
| CN107677146A (en) * | 2017-11-03 | 2018-02-09 | 山东中天国际工程有限公司 | Industrial chlorinations sodium fusion salt is atomized cooling device |
| CN107677146B (en) * | 2017-11-03 | 2023-10-13 | 山东中天国际工程有限公司 | Industrial sodium chloride fused salt atomizing and cooling device |
| CN110218825A (en) * | 2019-07-03 | 2019-09-10 | 河北科技大学 | A kind of slag treatment system and processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |