CN2863813Y - High-air temperature multi-functional grouping residual heat system for blast furnace - Google Patents
High-air temperature multi-functional grouping residual heat system for blast furnace Download PDFInfo
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- CN2863813Y CN2863813Y CN 200620069052 CN200620069052U CN2863813Y CN 2863813 Y CN2863813 Y CN 2863813Y CN 200620069052 CN200620069052 CN 200620069052 CN 200620069052 U CN200620069052 U CN 200620069052U CN 2863813 Y CN2863813 Y CN 2863813Y
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Abstract
The utility model discloses a high-air temperature multi-functional grouping residual heat system for blast furnace, which belongs to the steel smelting equipment technology field comprising a hot stove, a previa combustion, a smoke-mixing chamber, an air turbulator heat exchanger, an air heat-pipe heat exchanger, a gas heat-pipe heat exchanger, an induced draft fan, a blower, a chimney, a cold gas main pipe and vary valves as well as relative connection pipes. The bypass and relative valves are set on the previa combustion, the air turbulator heat exchanger, the air heat-pipe heat exchanger and the gas heat-pipe heat exchanger. The high-air temperature heat exchange system can be switched when the blast furnace can not receive the high-air temperature to reduce the gas consuming quantum of the previa furnace and reduce the mixing smoke temperature. The purpose of the multi-function of the high-air temperature drying the coal powder and heating the crude gas can be achieved and the utility model has the advantages of a small system equipment volume, a compact structure, little metal consumption, low cost and running cost, can be wildly used in the steel smelting industry.
Description
Technical field
The utility model relates to a kind of high furnace preheating system, belongs to the steel smelting equipment technical field.
Background technology
In the prior art, a kind of " the combination heat-exchange system of the high wind-warm syndrome of blast furnace " arranged, the patent No. is: ZL200420024014.9, as Fig. 1, its mainly by hotblast stove 1 ', breadboard 2 ', preposition roasting kiln 3 ', the sub-interchanger 6 of air disturbance ', air hot tube heat exchanger 9 ', coal gas hot tube heat exchanger 10 ', induced draft fan 11 ', gas blower 12 ', chimney 13 ', cold-air duct 14 ', cooled coal gas pipe 18 ' and due pipeline and valve composition, described air hot tube heat exchanger 9 ', coal gas hot tube heat exchanger 10 ' being combined into one forms sky, the gas double pre-heating device, described gas blower 12 ' outlet by cold-air duct 14 ' connection air hot tube heat exchanger 9 ' air interface, air hot tube heat exchanger 9 ' air be divided into two-way: the one tunnel through preposition roasting kiln 3 ' air flow rate adjustment valve 22 ' and preposition roasting kiln 3 of warm air arm 16 ' connection ', another road through the sub-interchanger 6 of warm-air pipe 15 ' connection air disturbance ' air intlet, the sub-interchanger 6 of air disturbance ' air through hot-blast main 17 ' connection hotblast stove 1.Cooled coal gas house steward 18 connect coal gas hot tube heat exchanger 10 ' gas inlet, coal gas hot tube heat exchanger 10 ' gas exit connect gas main 19 ', the heating gas house steward is divided into two-way again: one tunnel connection hotblast stove 1 ', another road through preposition roasting kiln gas flow variable valve 21 ' preposition roasting kiln 3 of connection ', preposition roasting kiln 3 ' exhanst gas outlet connect to mix flue 5 '; Hotblast stove 1 ' be provided with breadboard 2 ', breadboard 2 ' pipeline be divided into two-way: the one tunnel mixes flue with hot-blast stove fume through arm 4 ' connection, also has one the tunnel through hot-blast stove fume bypass flow variable valve 23 ' and mix the gas approach of smoke pipe 7 ' connections sky, gas double pre-heating hot tube heat exchanger; Mix flue 5 ' outlet connect the sub-interchanger 6 of air disturbance ' gas approach, the sub-interchanger 6 of air disturbance ' exhanst gas outlet connect flue gas hot tube heat exchanger 8 ' gas approach, flue gas hot tube heat exchanger 8 ' exhanst gas outlet connect induced draft fan 11 ' import, induced draft fan 11 ' outlet through breadboard 2 connect chimneys 13 '.During said apparatus work, cooled coal gas and freezing air are preheated to about 200 ℃ in sky, gas double pre-heating device, air further is preheated to 400 ℃～440 ℃ by the sub-interchanger of air disturbance, and coal gas and air after the preheating are sent to Combustion of Hot Air Furnace, can make blast furnace realize 1250 ℃ blast temperature.Its weak point is: the combination heat-exchange system of the high wind-warm syndrome of existing blast furnace, preposition roasting kiln incendiary coal gas and combustion air are not easy to switch, it is the air that the combustion air of preposition roasting kiln all adopts the burner blower of hotblast stove, reduced the wind supply quantity of hotblast stove, preposition roasting kiln incendiary blast furnace gas also is to use the coal gas after the preheater preheating, increase heat interchanging area empty, the coal gas hot tube heat exchanger, therefore also increased facility investment.
The utility model content
The purpose of this utility model provides the multi-functional combination waste heat of the high wind-warm syndrome of a kind of blast furnace system, makes it can regulate the air input of air hot tube heat exchanger, coal gas hot tube heat exchanger or the sub-interchanger of air disturbance as required, turn-offs preposition burning, improves thermo-efficiency.
The purpose of this utility model is achieved in that the multi-functional combination waste heat of the high wind-warm syndrome of blast furnace system, comprise hotblast stove, preposition roasting kiln, mix smoke-box, the sub-interchanger of air disturbance, the air hot tube heat exchanger, the coal gas hot tube heat exchanger, induced draft fan, gas blower, chimney, cooled coal gas house steward and various valve and corresponding connecting tube, the air outlet of described gas blower is divided into two-way, one tunnel import of connecting the air hot tube heat exchanger through the cold-air duct that is provided with the freezing air trip valve, another road is connected with the warm air house steward of hotblast stove through the bypass cold-air duct, is provided with bypass freezing air trip valve between bypass cold-air duct and the warm air house steward; The air of air hot tube heat exchanger is divided into three the tunnel, one the tunnel connects the air intlet of the sub-interchanger of air disturbance, the air intlet of preposition roasting kiln is connected on another road through air flow rate adjustment valve, Third Road warm air trip valve and warm air house steward are joined, and the air of the sub-interchanger of air disturbance meets the warm air house steward through valve; The cooled coal gas house steward is divided into two-way, one tunnel import through gas pipe connection coal gas hot tube heat exchanger, and another road joins through valve and heating gas house steward; The gas exit of coal gas hot tube heat exchanger is divided into two-way, and one the tunnel connects hotblast stove heating gas house steward, and preposition roasting kiln is connected through valve and gas flow variable valve in another road; The exhanst gas outlet of preposition roasting kiln is connected and is mixed smoke-box; Hotblast stove is provided with breadboard, tell three road arms on the breadboard, the first via is connected through hot-blast stove fume bypass flow variable valve and is mixed smoke-box, the second tunnel the gas approach through hot-blast stove fume bypass flow variable valve connection air hot tube heat exchanger and coal gas hot tube heat exchanger, Third Road through the electronic trip valve of flue gas connect that the exhanst gas outlet of the sub-interchanger of air disturbance is provided with after induced draft fan, the afterbody and the chimney of breadboard join; Mix the gas approach of smoke-box through the sub-interchanger of mixed flue gas pipe connection air disturbance; The exhanst gas outlet of the sub-interchanger of air disturbance is divided into two-way, and one the tunnel connects the gas approach of air hot tube heat exchanger and coal gas hot tube heat exchanger through valve, another road through valve with after the import of induced draft fan join; The exhanst gas outlet of air hot tube heat exchanger and coal gas hot tube heat exchanger is connected the blast inlet of induced draft fan, and the air outlet of induced draft fan is connected chimney.
The utility model adopts existing device in the prior art, constitutes a new heat-exchange system by mode of connection different from the past; During normal the use, can give the blast furnace hot wind supply by a plurality of hotblast stoves, after the cooled coal gas that comes from the cooled coal gas house steward was preheated to about 200 ℃ in the coal gas hot tube heat exchanger, major part was delivered to hotblast stove, also has small portion to deliver to preposition roasting kiln; After the freezing air that comes from gas blower is preheated to about 200 ℃ in the air hot tube heat exchanger, major part enters the sub-interchanger of air disturbance and carries out the secondary preheating, also have small portion to be sent to preposition roasting kiln, air is sent to hotblast stove be preheated to 400～440 ℃ in the turbolator interchanger after; As blast furnace gas is dry method dust, no longer preheating, air is delivered to hotblast stove through the warm air house steward be preheating to 450 ℃～500 ℃ in the turbolator interchanger after again, because it is relative with gas temperature higher to enter the air of hotblast stove, therefore hotblast stove will be than higher to the wind pushing temperature of blast furnace, make the furnace temperature of blast furnace be easy to remain on higher temperature more, can save the fuel of filling in the blast furnace; Owing to come the temperature degree higher, coal gas is more prone to and the abundant catalytic combustion of air in the preposition roasting kiln, it is few that burning reaches the required consumption coal gas of certain temperature amount, therefore can save coal gas; About 1100 ℃ the flue gas that preposition roasting kiln burning produces mixes the mixed flue gas of about 550～700 ℃ of formation with the flue gas that comes from the flue gas house steward, enter the sub-interchanger of air disturbance, to guarantee the secondary preheating temperature of air; Enter sky, coal gas hot tube heat exchanger together after flue gas that the sub-interchanger of air disturbance is discharged and the flue gas by breadboard converge, cooled coal gas and freezing air are carried out preheating, flue gas is drained via induced draft fan introducing chimney then.When blast furnace be can not accept high wind-warm syndrome, high wind-warm syndrome heat-exchange system can be switched, promptly reduce precell gas consumption amount, reduce the mixed flue gas temperature, reduce combustion air secondary preheating temperature or directly stop the precell operation, cut off 200 ℃ of warm airs and enter the turbolator interchanger and carry out the secondary preheating, directly be sent to hotblast stove warm air house steward, still can make blast furnace obtain 1100 ℃～1200 ℃ blast temperature.Adopt the blast furnace of dry method dust for raw gas, its gas temperature is greatly about 80 ℃～150 ℃ scopes, can no longer carry out preheating, therefore half thickness gas of hotblast stove can be led to the air hot tube heat exchanger, the hotblast stove combustion air is preheated to 200 ℃, and another smaller part flue gas of hotblast stove is sent to the mixed smoke-box of stove roasting kiln, mix the mixed flue gas that the back obtains 550 ℃～700 ℃ with 1100 ℃ high-temperature flue gas of precell, enter the sub-interchanger of air disturbance, make the combustion air of hotblast stove be preheated to 450 ℃～550 ℃ by 200 ℃ of secondaries, can make blast furnace obtain 1250 ℃ blast temperature equally, yet the flue gas that flows out the turbolator interchanger still has 320 ℃～370 ℃ temperature, it can be sent in the medium-speed pulverizer of blast furnace system pulverized coal system, in order to the oven dry coal dust, both solve the thermal source problem of baking coal measures system, and saved and made flue gas stove baking coal dust in addition, reduced the consumption of blast furnace gas generally; This device can also be sent to raw gas dry method dust front with 320 ℃～370 ℃ flue gases that flow out the turbolator interchanger as required, in order to the heating raw gas, the raw gas temperature is remained in 150 ℃～200 ℃ scopes, improves efficiency of dust collection to prevent dewfall.The utility model technology is because the system warm-up mode is reasonable, use the preposition roasting kiln high-temperature flue gas that a spot of blast furnace gas produced that burns, again with useless flue gas mixing preheated air of the part of hotblast stove discharging or coal gas, or the oven dry coal dust is used, residual heat resources have been made full use of, can realize that the high wind-warm syndrome of blast furnace can be dried coal dust again, the heating raw gas reaches multi-functional purpose, its system device volume is little, compact construction, metal wastage is few, cost is hanged down advantages such as reaching economic operating cost, can be widely used in the smelting iron and steel industry.
Description of drawings
Fig. 1 is the high wind-warm syndrome combination of prior art blast furnace heat-exchange system annexation figure;
Fig. 2 is the utility model annexation figure;
Embodiment
As Fig. 2, be the multi-functional combination pre-heating system of the high wind-warm syndrome of blast furnace, mainly by hotblast stove 1, breadboard 2, preposition roasting kiln 3, mix smoke-box 48, the sub-interchanger 6 of air disturbance, air hot tube heat exchanger 9, coal gas hot tube heat exchanger 10, induced draft fan 11, gas blower 12, chimney 13, cooled coal gas house steward 39 pipelines such as grade and various valve connect to form, the air outlet of described gas blower 12 is divided into two-way, the import that one tunnel cold-air duct 14 through being provided with freezing air trip valve 36 is connected air hot tube heat exchanger 9, another road is connected with the warm air house steward 44 of hotblast stove through bypass cold-air duct 38, is provided with bypass freezing air trip valve 37 between bypass cold-air duct 38 and the warm air house steward 44; The air of air hot tube heat exchanger 9 is divided into three the tunnel, one tunnel air intlet through the sub-interchanger 6 of pipeline 15 connection air disturbance, the air intlet of preposition roasting kiln 3 is sent on another road through pipeline 16 and air flow rate adjustment valve 22, Third Road joins with warm air house steward 44 through warm air arm 31 and warm air trip valve 30, and the air of the sub-interchanger 6 of air disturbance meets warm air house steward 44 through valve 34 and pipeline 17; Cooled coal gas house steward 39 is divided into two-way, one tunnel import through gas pipe 18 connection coal gas hot tube heat exchanger 10, and another road joins with heating gas house steward 45 through gas pipe 39 through bypass, is cut off by valve 40 therebetween; The gas exit of coal gas hot tube heat exchanger 10 is divided into two-way, and one the tunnel directly connects hotblast stove heating gas house steward 45 through gas pipe 19, and preposition roasting kiln 3 is connected through gas pipe 20, valve 43 and gas flow variable valve 21 in another road; The exhanst gas outlet of preposition roasting kiln 3 is connected and is mixed smoke-box 48; Hotblast stove 1 is provided with breadboard 2, tell three road arms on the breadboard 2, the first via is connected mixed smoke-box 48 through hot-blast stove fume bypass flow variable valve 25 and smoke pipe 4, the second tunnel the gas approach through hot-blast stove fume bypass flow variable valve 23 and smoke pipe 52 connection air hot tube heat exchanger 9 and coal gas hot tube heat exchanger 10, the exhanst gas outlet that Third Road is connected the sub-interchanger 6 of air disturbance through the electronic trip valve 24 of smoke pipe 49 and flue gas be provided with after induced draft fan 51, the afterbody of breadboard 2 joins as by-pass flue and chimney 13; Mix smoke-box 48 connects the sub-interchanger 6 of air disturbance through mixed flue gas pipeline 5 gas approach, the exhanst gas outlet of the sub-interchanger 6 of air disturbance is divided into two-way, one tunnel gas approach through valve 27 and smoke pipe 7 connection air hot tube heat exchanger 9 and coal gas hot tube heat exchanger 10, another road joins with the import of induced draft fan 51 through valve 26 and smoke pipe 50; The exhanst gas outlet of air hot tube heat exchanger 9 and coal gas hot tube heat exchanger 10 is connected the blast inlet of induced draft fan 11, and the air outlet of induced draft fan 11 is connected chimney 13.
During work, have following mode of operation:
One is: gas blower 12 work, cool ambient air is squeezed into the air hot tube heat exchanger, after the freezing air that comes from gas blower is preheated to about 200 ℃ in the air hot tube heat exchanger, major part enters the sub-interchanger of air disturbance and carries out the secondary preheating, also have small portion to be sent to preposition roasting kiln, air is sent to hotblast stove be preheated to 400～440 ℃ in the turbolator interchanger after; After the cooled coal gas that comes from the cooled coal gas house steward was preheated to about 200 ℃ in the coal gas hot tube heat exchanger, major part was delivered to hotblast stove, also had small portion to deliver to preposition roasting kiln; A plurality of hotblast stoves are given the blast furnace hot wind supply, as blast furnace gas is dry method dust, no longer preheating, air is delivered to hotblast stove through the warm air house steward be preheating to 450 ℃～500 ℃ in the turbolator interchanger after again, because it is relative with gas temperature higher to enter the air of hotblast stove, therefore hotblast stove will make the furnace temperature of blast furnace be easy to remain on higher temperature more than higher for the wind pushing temperature of blast furnace, can save the fuel of filling in the blast furnace; Owing to come the temperature degree higher, coal gas is more prone to and the abundant catalytic combustion of air in the preposition roasting kiln, it is few that burning reaches the required consumption coal gas of certain temperature amount, therefore can save coal gas; About 1100 ℃ the flue gas that preposition roasting kiln burning produces mixes the mixed flue gas of about 550～700 ℃ of formation with the flue gas that comes from the flue gas house steward, enter the sub-interchanger of air disturbance, to guarantee the secondary preheating temperature of air; Enter sky, coal gas hot tube heat exchanger together after flue gas that the sub-interchanger of air disturbance is discharged and the flue gas by breadboard converge, cooled coal gas and freezing air are carried out preheating, flue gas is drained via induced draft fan introducing chimney then.
They are two years old, in the foregoing description, regulated valve 21 with the coal gas amount of reduce preposition roasting kiln 3, open big valve 25, increase the hot-blast stove fume amount of mixing smoke-box 48 that is blended into, to reduce the mixed flue gas temperature, perhaps direct valve-off 43 or 41, valve-off 22 (or machine 46 runnings that turn off the blast) moves to stop preposition roasting kiln, meanwhile, and cutting-off valve 29,34,25, open valve 30, can reduce the gas consumption of preposition roasting kiln, save energy improves thermo-efficiency.For the blast furnace of dry method dust, from system shown in Figure 2, turn-off coal gas hot tube heat exchanger 10, promptly cut off pipeline 18,19,32,33,35 and valve-off 27, Open valve 26, start back induced draft fan 51.
For the blast furnace of wet dedusting, temperature of gas has been reduced to normal temperature, and blast furnace gas and the combustion air that burn hotblast stove this moment all need to carry out preheating.Cut off whole flue gases that sequence number 24,26,49,50,51 can be come out the turbolator interchanger among Fig. 2 and be sent to preheating gas and air in air and the coal gas hot tube heat exchanger.
Above-mentioned air hot tube heat exchanger, coal gas hot tube heat exchanger all have by-pass line, can close respectively in case of necessity, and smoke evacuation also can be by the 54 straight-through chimneys that enter of the valve on the cigarette main pipe rail.
Claims (1)
1, the multi-functional combination waste heat of the high wind-warm syndrome of blast furnace system, comprise hotblast stove (1), preposition roasting kiln (3), mix smoke-box (48), the sub-interchanger of air disturbance (6), air hot tube heat exchanger (9), coal gas hot tube heat exchanger (10), induced draft fan (11), gas blower (12), chimney (13), cooled coal gas house steward (39) and various valve and corresponding connecting tube, it is characterized in that: the air outlet of described gas blower (12) is divided into two-way, the import that one tunnel cold-air duct (14) through being provided with freezing air trip valve (36) is connected air hot tube heat exchanger (9), another road is connected with the warm air house steward (44) of hotblast stove through bypass cold-air duct (38), is provided with bypass freezing air trip valve (37) between bypass cold-air duct (38) and the warm air house steward (44); The air of air hot tube heat exchanger (9) is divided into three the tunnel, one the tunnel connects the air intlet of the sub-interchanger of air disturbance (6), the air intlet of preposition roasting kiln (3) is connected on another road through air flow rate adjustment valve (22), Third Road warm air trip valve (30) joins with warm air house steward (44), and the air of the sub-interchanger of air disturbance meets warm air house steward (44) through valve (34); Cooled coal gas house steward (39) is divided into two-way, one tunnel import through gas pipe (18) connection coal gas hot tube heat exchanger (10), and another road joins with heating gas house steward (45) through valve (40); The gas exit of coal gas hot tube heat exchanger (10) is divided into two-way, and one the tunnel connects hotblast stove heating gas house steward (45), and preposition roasting kiln (3) is connected through valve (43) and gas flow variable valve (21) in another road; The exhanst gas outlet of preposition roasting kiln (3) is connected and is mixed smoke-box (48); Hotblast stove (1) is provided with breadboard (2), breadboard is told three road arms on (2), the first via is connected through hot-blast stove fume bypass flow variable valve (25) and is mixed smoke-box (48), the second tunnel the gas approach through hot-blast stove fume bypass flow variable valve (23) connection air hot tube heat exchanger (9) and coal gas hot tube heat exchanger (10), Third Road through the electronic trip valve of flue gas (24) connect that the exhanst gas outlet of the sub-interchanger of air disturbance (6) is provided with after induced draft fan 51, the afterbody of breadboard (2) and chimney (13) join; Mix smoke-box (48) connects the sub-interchanger of air disturbance (6) through mixed flue gas pipeline (5) gas approach; The exhanst gas outlet of the sub-interchanger of air disturbance (6) is divided into two-way, and one the tunnel connects the gas approach of air hot tube heat exchanger (9) and coal gas hot tube heat exchanger (10) through valve (27), another road through valve (26) and after the import of induced draft fan (51) join; The exhanst gas outlet of air hot tube heat exchanger (9) and coal gas hot tube heat exchanger (10) is connected the blast inlet of induced draft fan (11), and the air outlet of induced draft fan (11) is connected chimney 13.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200620069052 CN2863813Y (en) | 2006-01-26 | 2006-01-26 | High-air temperature multi-functional grouping residual heat system for blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200620069052 CN2863813Y (en) | 2006-01-26 | 2006-01-26 | High-air temperature multi-functional grouping residual heat system for blast furnace |
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| CN2863813Y true CN2863813Y (en) | 2007-01-31 |
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| CN 200620069052 Expired - Lifetime CN2863813Y (en) | 2006-01-26 | 2006-01-26 | High-air temperature multi-functional grouping residual heat system for blast furnace |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928797A (en) * | 2010-07-29 | 2010-12-29 | 江苏中天能源设备有限公司 | High-blast-temperature energy-saving and emission-reducing combined type preheating system for blast furnace |
| CN102912055A (en) * | 2012-08-29 | 2013-02-06 | 北京和隆优化控制技术有限公司 | Intelligent optimization control system of blast furnace hot-blast stove |
| CN103045786A (en) * | 2011-10-11 | 2013-04-17 | 凯斯通环保设备有限公司 | High-blast-temperature combinative heat exchange system of blast furnace |
| CN103333976A (en) * | 2013-06-08 | 2013-10-02 | 中冶南方工程技术有限公司 | Flue gas waste heat utilization system and flue gas waste heat utilization method of hot blast furnace |
| CN104073268A (en) * | 2014-07-11 | 2014-10-01 | 上海理工大学 | Coking-preventing raw coke oven gas waste heat recycling device for heat-conduction oil coke oven |
| CN107227382A (en) * | 2017-07-31 | 2017-10-03 | 中冶京诚工程技术有限公司 | A kind of hot blast stove system of blast furnace |
| CN110129497A (en) * | 2019-05-13 | 2019-08-16 | 鞍钢集团工程技术有限公司 | Pulverized coal injection in blast furnace is connected pre-heating technique and system with hot-blast stove air/gas |
-
2006
- 2006-01-26 CN CN 200620069052 patent/CN2863813Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928797A (en) * | 2010-07-29 | 2010-12-29 | 江苏中天能源设备有限公司 | High-blast-temperature energy-saving and emission-reducing combined type preheating system for blast furnace |
| CN103045786A (en) * | 2011-10-11 | 2013-04-17 | 凯斯通环保设备有限公司 | High-blast-temperature combinative heat exchange system of blast furnace |
| CN102912055A (en) * | 2012-08-29 | 2013-02-06 | 北京和隆优化控制技术有限公司 | Intelligent optimization control system of blast furnace hot-blast stove |
| CN102912055B (en) * | 2012-08-29 | 2014-07-09 | 北京和隆优化科技股份有限公司 | Intelligent optimization control system of blast furnace hot-blast stove |
| CN103333976A (en) * | 2013-06-08 | 2013-10-02 | 中冶南方工程技术有限公司 | Flue gas waste heat utilization system and flue gas waste heat utilization method of hot blast furnace |
| CN103333976B (en) * | 2013-06-08 | 2014-11-05 | 中冶南方工程技术有限公司 | Flue gas waste heat utilization system and flue gas waste heat utilization method of hot blast furnace |
| CN104073268A (en) * | 2014-07-11 | 2014-10-01 | 上海理工大学 | Coking-preventing raw coke oven gas waste heat recycling device for heat-conduction oil coke oven |
| CN107227382A (en) * | 2017-07-31 | 2017-10-03 | 中冶京诚工程技术有限公司 | A kind of hot blast stove system of blast furnace |
| CN110129497A (en) * | 2019-05-13 | 2019-08-16 | 鞍钢集团工程技术有限公司 | Pulverized coal injection in blast furnace is connected pre-heating technique and system with hot-blast stove air/gas |
| CN110129497B (en) * | 2019-05-13 | 2024-04-16 | 鞍钢集团工程技术有限公司 | Series preheating process and system for pulverized coal injection of blast furnace and air/gas of hot blast stove |
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