CN105385801B - A kind of blast furnace cooling stave afterheat utilizing system and its application process - Google Patents
A kind of blast furnace cooling stave afterheat utilizing system and its application process Download PDFInfo
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- CN105385801B CN105385801B CN201510840508.7A CN201510840508A CN105385801B CN 105385801 B CN105385801 B CN 105385801B CN 201510840508 A CN201510840508 A CN 201510840508A CN 105385801 B CN105385801 B CN 105385801B
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Abstract
The present invention provides a kind of blast furnace cooling stave afterheat utilizing systems, including blast furnace and wet cooling tower, wet cooling tower is connected in parallel with absorption heat pump by cooling wall circulation pipe, and the wet cooling tower and absorption heat pump after parallel connection are connected by cooling wall circulation pipe with cooling wall circulating pump and blast furnace；Wet cooling tower front and back end is separately installed with valve one and valve two, and the front and back end of absorption heat pump is separately installed with valve five and valve six.The system structure is simple, and installation operation is convenient, and the waste heat of water at low temperature in the blast furnace cooling stave circulatory system is recycled using absorption heat pump, produces the uses such as high-temperature water supply user heating, takes full advantage of the heat in the blast furnace cooling stave circulatory system, energy saving.
Description
Technical field
Present invention relates particularly to a kind of blast furnace cooling stave afterheat utilizing system and its application processes, are applied to the blast furnaces such as ironmaking
Cooling wall waste heat recovery.
Background technology
In metallurgy industry, damages, need to State of Blast Furnace convenient for high temperature for the structures such as the blast furnaces such as protection ironmaking and equipment
Body constantly cool down, and makes its control within the scope of certain temperature.Currently, the cooling scheme that blast furnace cooling uses is using soft
After water tape loop walks the heat of blast furnace, cooling water and outdoor air are transferred heat to through devaporizer, cooling water is inhaled
The heat of receipts is arranged from cooling tower to air again.
However, this type of cooling finally all arranges the heat that blast furnace distributes to air, the huge of energy is caused
Waste.With 1800m3For blast furnace, the heat that blast furnace cooling stave is dispersed into air by cooling system is 18000kW, should
Heat can about meet the heating demand of 180,000 square metres of construction areas in winter.
Invention content
The purpose of the present invention is the heats for overcoming existing blast furnace to distribute all to arrange to air, causes the huge wave of energy
The problem of taking.
For this purpose, the present invention provides a kind of blast furnace cooling stave afterheat utilizing system, including blast furnace and wet cooling tower,
The wet cooling tower is connected in parallel with absorption heat pump by cooling wall circulation pipe, the wet cooling tower after the parallel connection and suction
Receipts formula heat pump is connected by cooling wall circulation pipe with cooling wall circulating pump and blast furnace, the wet cooling tower of the parallel connection and suction
Two branch of receipts formula heat pump is controlled by valve to be switched.
As a preferred embodiment, the wet cooling tower front and back end is separately installed with valve one and valve two,
The front and back end of absorption heat pump is separately installed with valve five and valve six.
Further, above-mentioned wet cooling tower has been sequentially connected in series cooling water circulating pump one, cooling by cooling water circulation pipe
Tower and cooling water circulating pump two.
Further, the front and back end of above-mentioned cooling water circulation pipe disengaging wet cooling tower is respectively arranged with valve three and valve
Four.
Further, above-mentioned absorption heat pump heat source interface connects high-pressure steam pipe；Absorption heat pump condensed water interface connects
Condensate pipe is connect, condensate pump is set on the condensate pipe.
Further, above-mentioned absorption heat pump water inlet of hot water connects user side return pipe；Absorption heat pump hot water effluent
Mouth connects user side heating tube, and user side water pump is arranged on the user side heating tube.
In addition, the present invention also provides the application process of the blast furnace cooling stave afterheat utilizing system, following step is specifically included
Suddenly：
1) soft water is filled in cooling wall circulation pipe.
2) when need not recycle heat in blast furnace production process, by valve transfer, the branch of wet cooling tower is opened,
Close absorption heat pump branch, soft water absorption blast furnace thermal temperature increase after by cooling wall circulation pipe through valve one into
Enter in wet cooling tower, soft water is released after thermal temperature reduces in wet cooling tower and pressurizeed through valve two and cooling wall circulating pump
After enter back into and absorb heat in blast furnace cooling stave.
3) when needing to recycle heat in blast furnace production process, switch valve closes the branch of wet cooling tower, opens and inhales
The branch of receipts formula heat pump, soft water absorption blast furnace thermal temperature is entered by cooling wall circulation pipe through valve five after increasing to be absorbed
In formula heat pump, soft water released in absorption heat pump thermal temperature reduce after through valve six and cooling wall circulating pump pressurization after again into
Enter and absorbs heat in blast furnace cooling stave.
Further, above-mentioned steps 2) in wet cooling tower cooling water circulating pump has been sequentially connected in series by cooling water circulation pipe
One, the front and back end of cooling tower and cooling water circulating pump two, cooling water circulation pipe disengaging wet cooling tower is respectively arranged with valve three
With valve four；
It fills tap water in cooling water circulation pipe, opens valve three and valve four, in the header tank of wet cooling tower lower half
Cooling water entered in cooling tower through valve three and cooling water circulating pump one, after cooling water and outdoor air heat-exchange temperature reduce
Entered in wet cooling tower by valve four after the pressurization of cooling water circulating pump two again, thermal temperature is absorbed in wet cooling tower
Enter in the header tank of wet cooling tower lower half after raising.
Further, above-mentioned steps 3) in absorption heat pump heat source interface connect high-pressure steam pipe；Absorption heat pump condenses
Water interface connects condensate pipe, and condensate pump is arranged on the condensate pipe；Absorption heat pump water inlet of hot water connects user side and returns
Water pipe；Absorption heat pump hot water outlet connects user side heating tube, and user side water pump is arranged on the user side heating tube；
The personal hot lower return water of family temperature is delivered to absorption thermal temperature in absorption heat pump to user side return pipe in the future
It is delivered to through user side water pump after raising and is used with hot family, form user side thermal cycle；High steam by high-pressure steam pipe into
Enter into absorption heat pump, drive the heat transfer process in absorption heat pump, it is condensed to be condensed into condensed water after high steam fever
It is delivered to condensed water downstream line after water pump pressurization.
Compared with prior art, beneficial effects of the present invention：
(1) this blast furnace cooling stave afterheat utilizing system provided by the invention recycles blast furnace cooling stave using absorption heat pump
The waste heat of water at low temperature in the circulatory system produces the uses such as high-temperature water supply user heating, takes full advantage of blast furnace cooling stave cycle
Heat in system, it is energy saving.
(2) this blast furnace cooling stave afterheat utilizing system provided by the invention is simple in structure, and installation operation is convenient, can be at any time
Switch wet cooling tower and absorption heat pump, heat and recycling two technical process of heat are not recycled in realization.
The present invention is described in further details below with reference to attached drawing.
Description of the drawings
Fig. 1 is the structural schematic diagram of blast furnace cooling stave afterheat utilizing system of the present invention.
Reference sign：1, cooling wall circulation pipe；2, wet cooling tower；3, valve one；4, valve two；5, cooling wall follows
Ring pumps；6, cooling tower；7, cooling water circulation pipe；8, cooling water circulating pump one；9, valve three；10, valve four；11, cooling water follows
Ring pump two；12, valve five；13, valve six；14, high-pressure steam pipe；15, condensate pipe；16, condensate pump；17, absorption type heat
Pump；18, user side return pipe；19, user side heating tube；20, user side water pump.
Specific implementation mode
Embodiment 1：
The problem of in order to overcome the heat that existing blast furnace distributes all to arrange the huge waste for causing energy to air,
A kind of blast furnace cooling stave afterheat utilizing system as shown in Figure 1 provided in this embodiment, including blast furnace and wet cooling tower
2, the wet cooling tower 2 is connected in parallel with absorption heat pump 17 by cooling wall circulation pipe 1, the evaporation cooling after the parallel connection
Tower 2 and absorption heat pump 17 are connected by cooling wall circulation pipe 1 with cooling wall circulating pump 5 and blast furnace, the steaming of the parallel connection
It sends out 17 liang of branches of cooling tower 2 and absorption heat pump and is controlled by valve and switched.
Wherein, as an implementation, above-mentioned valve can be triple valve, and switching evaporation cooling is controlled by triple valve
The opening and closing of 17 liang of branches of tower 2 and absorption heat pump.Another preferred embodiment is 2 front and back end of wet cooling tower difference
Valve 1 and valve 24 are installed, the front and back end of absorption heat pump 17 is separately installed with valve 5 12 and valve 6 13.
The application process of the blast furnace cooling stave afterheat utilizing system specifically comprises the following steps：
1) soft water is filled in cooling wall circulation pipe 1, soft water can prevent scale effect furnace structure safety in pipeline.
2) when need not recycle heat in blast furnace production process, valve 1 and valve 24 are opened, closes valve 5 12
It is cold into evaporating through valve 1 by cooling wall circulation pipe 1 after the raising of soft water absorption blast furnace thermal temperature with valve 6 13
But in tower 2, soft water is released in the wet cooling tower 2 after thermal temperature reduces after valve 24 and cooling wall circulating pump 5 pressurize again
Heat is absorbed in into blast furnace cooling stave.
3) when needing to recycle heat in blast furnace production process, valve 1 and valve 24 are closed, opens 5 12 He of valve
Valve 6 13, soft water absorption blast furnace thermal temperature are absorption through the entrance of valve 5 12 by cooling wall circulation pipe 1 after increasing
In heat pump 17, soft water is released after thermal temperature reduces in absorption heat pump 17 and is pressurizeed through valve 6 13 and cooling wall circulating pump 5
After enter back into and absorb heat in blast furnace cooling stave.
And as a preferred embodiment, when need not recycle heat in step 2), wet cooling tower 2 passes through cooling
Water-circulating pipe 7 has been sequentially connected in series cooling water circulating pump 1, cooling tower 6 and cooling water circulating pump 2 11, the cooling water circulation pipe
The front and back end of 7 disengaging wet cooling towers 2 is respectively arranged with valve 39 and valve 4 10.
Tap water is filled in cooling water circulation pipe 7, opens valve 39 and valve 4 10,2 lower half of wet cooling tower are catchmented
Cooling water in case is entered through valve 39 and cooling water circulating pump 1 in cooling tower 6, cooling water and outdoor air heat exchange temperature
Degree is entered by valve 4 10 in wet cooling tower 2 after the pressurization of cooling water circulating pump 2 11 again after reducing, in wet cooling tower 2
Interior absorb after thermal temperature increases enters in the header tank of 2 lower half of wet cooling tower.Pass through the cycle, blast furnace cooling wall
Heat be dispersed into air indirectly.
In addition, when needing to recycle heat in step 3), 17 heat source interface of absorption heat pump is connected into high-pressure steam pipe 14；It inhales
17 condensed water interface of receipts formula heat pump connects condensate pipe 15, and condensate pump 16 is arranged on the condensate pipe 15；Absorption heat pump 17
Water inlet of hot water connects user side return pipe 18；17 hot water outlet of absorption heat pump connects user side heating tube 19, the user
User side water pump 20 is set on side heating tube 19.
The personal hot lower return water of family temperature is delivered to absorption heat in absorption heat pump 17 to user side return pipe 18 in the future
Temperature is delivered to through user side water pump 20 after increasing and is used with hot family, forms user side thermal cycle；High steam is steamed by high pressure
Steam pipe 14 enters in absorption heat pump 17, drives the heat transfer process in absorption heat pump 17, is condensed into after high steam fever
The condensed water pump 16 of condensed water is delivered to condensed water downstream line after pressurizeing.By the system, high steam (0.6MPa with
On) under the driving of heat source, it is higher by (about 95 that the waste heat recovery of blast furnace cooling wall temperature relatively low (45 DEG C) is constantly become into temperature
DEG C) delivery to hot family use.
In conclusion this blast furnace cooling stave afterheat utilizing system provided by the invention is simple in structure, installation operation is convenient,
The waste heat that water at low temperature in the blast furnace cooling stave circulatory system is recycled using absorption heat pump, producing high-temperature water supply user heating etc. makes
With, the heat in the blast furnace cooling stave circulatory system is taken full advantage of, it is energy saving.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
Be with the present invention it is same or analogous design all belong to the scope of protection of the present invention within.
Claims (6)
1. a kind of blast furnace cooling stave afterheat utilizing system, including blast furnace and wet cooling tower (2), it is characterised in that：It is described
Wet cooling tower (2) is connected in parallel with absorption heat pump (17) by cooling wall circulation pipe (1), the evaporation cooling after the parallel connection
Tower (2) and absorption heat pump (17) are connected by cooling wall circulation pipe (1) with cooling wall circulating pump (5) and blast furnace, described
Wet cooling tower (2) and (17) two branch of absorption heat pump in parallel is controlled by valve to be switched；The wet cooling tower (2) is logical
Supercooled water circulation pipe (7) has been sequentially connected in series cooling water circulating pump one (8), cooling tower (6) and cooling water circulating pump two (11), institute
The front and back end for stating cooling water circulation pipe (7) disengaging wet cooling tower (2) is respectively arranged with valve three (9) and valve four (10).
2. blast furnace cooling stave afterheat utilizing system as described in claim 1, it is characterised in that：Before the wet cooling tower (2)
Rear end is separately installed with valve one (3) and valve two (4), and the front and back end of absorption heat pump (17) is separately installed with valve five (12)
With valve six (13).
3. blast furnace cooling stave afterheat utilizing system as claimed in claim 1 or 2, it is characterised in that：The absorption heat pump
(17) heat source interface connection high-pressure steam pipe (14)；Absorption heat pump (17) condensed water interface connects condensate pipe (15), this is cold
Condensate pump (16) is set on condensate pipe (15).
4. blast furnace cooling stave afterheat utilizing system as claimed in claim 3, it is characterised in that：Absorption heat pump (17) heat
Water water inlet connects user side return pipe (18)；Absorption heat pump (17) hot water outlet connects user side heating tube (19), should
User side water pump (20) is set on user side heating tube (19).
5. such as the application process of Claims 1 to 4 any one of them blast furnace cooling stave afterheat utilizing system, it is characterised in that：
Include the following steps：
1) soft water is filled in cooling wall circulation pipe (1)；
2) when need not recycle heat in blast furnace production process, by valve transfer, the branch of wet cooling tower (2) is opened,
Close absorption heat pump (17) branch, soft water absorption blast furnace thermal temperature increase after by cooling wall circulation pipe (1) into
Enter in wet cooling tower (2), soft water is released in wet cooling tower (2) after thermal temperature reduces to be added through cooling wall circulating pump (5)
It is entered back into after pressure and absorbs heat in blast furnace cooling stave；Tap water is filled in cooling water circulation pipe (7), opens valve three (9) and valve
Four (10) of door, cooling water in the header tank of wet cooling tower (2) lower half through valve three (9) and cooling water circulating pump one (8) into
Enter into cooling tower (6), cooling water leads to after cooling water circulating pump two (11) pressurization again after being reduced with outdoor air heat-exchange temperature
It is interior into wet cooling tower (2) to cross valve four (10), it is cold to enter evaporation after increasing for absorption thermal temperature in wet cooling tower (2)
But in the header tank of tower (2) lower half；
3) when needing to recycle heat in blast furnace production process, switch valve closes the branch of wet cooling tower (2), opens and inhales
The branch of receipts formula heat pump (17), soft water absorption blast furnace thermal temperature, which is entered after increasing by cooling wall circulation pipe (1), to be absorbed
In formula heat pump (17), soft water is released thermal temperature in absorption heat pump (17) and is reduced after postcooling wall circulating pump (5) pressurizes again
Heat is absorbed in into blast furnace cooling stave.
6. the application process of blast furnace cooling stave afterheat utilizing system as claimed in claim 5, it is characterised in that：The step 3)
Middle absorption heat pump (17) heat source interface connection high-pressure steam pipe (14)；Absorption heat pump (17) condensed water interface connects condensed water
It manages (15), setting condensate pump (16) on the condensate pipe (15)；Absorption heat pump (17) water inlet of hot water connects user side and returns
Water pipe (18)；Absorption heat pump (17) hot water outlet connects user side heating tube (19), is set on the user side heating tube (19)
Set user side water pump (20)；
The personal hot lower return water of family temperature is delivered to absorption heat in absorption heat pump (17) to user side return pipe (18) in the future
Temperature is delivered to through user side water pump (20) after increasing and is used with hot family, forms user side thermal cycle；High steam is by high pressure
Steam pipe (14) enters in absorption heat pump (17), the heat transfer process in driving absorption heat pump (17), high steam fever
After be condensed into the condensed water pump of condensed water (16) pressurization after be delivered to condensed water downstream line.
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| CN201510840508.7A CN105385801B (en) | 2015-11-27 | 2015-11-27 | A kind of blast furnace cooling stave afterheat utilizing system and its application process |
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| CN201510840508.7A CN105385801B (en) | 2015-11-27 | 2015-11-27 | A kind of blast furnace cooling stave afterheat utilizing system and its application process |
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| CN105385801A CN105385801A (en) | 2016-03-09 |
| CN105385801B true CN105385801B (en) | 2018-07-24 |
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| CN105864107B (en) * | 2016-05-27 | 2019-03-01 | 山东钢铁股份有限公司 | The cooling system and heating furnace water beam column cooling body of the sealing of hot water circulating pump |
| CN109988874B (en) * | 2017-12-29 | 2024-03-15 | 西安华江环保科技股份有限公司 | System and method for recycling waste heat of pure water closed-loop circulating water of blast furnace |
| CN113046504B (en) * | 2021-03-18 | 2022-06-21 | 东北大学 | Blast furnace production system utilizing waste heat, residual pressure and residual cooling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196584A (en) * | 2014-09-04 | 2014-12-10 | 昆明理工大学 | System capable of conducting power recovering and cooling by using waste heat of blast furnace slag flushing water |
| CN104279788A (en) * | 2013-07-08 | 2015-01-14 | 北京华航盛世能源技术有限公司 | Process system capable of utilizing waste heat and complementary energy of cooling water of blast furnace |
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| CN101135437A (en) * | 2007-10-12 | 2008-03-05 | 莱芜钢铁集团有限公司 | Method and device for recycling residual heat of blast furnace low-temperature recirculated water with heat pump technology |
| CN202912980U (en) * | 2012-10-26 | 2013-05-01 | 北京京诚科林环保科技有限公司 | Blast furnace soft water closed circulation low-temperature waste heat recovery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279788A (en) * | 2013-07-08 | 2015-01-14 | 北京华航盛世能源技术有限公司 | Process system capable of utilizing waste heat and complementary energy of cooling water of blast furnace |
| CN104196584A (en) * | 2014-09-04 | 2014-12-10 | 昆明理工大学 | System capable of conducting power recovering and cooling by using waste heat of blast furnace slag flushing water |
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