CN202849450U - Power generation system capable of recycling excess pressure and waste heat of blast furnace gas - Google Patents
Power generation system capable of recycling excess pressure and waste heat of blast furnace gas Download PDFInfo
- Publication number
- CN202849450U CN202849450U CN201220468764XU CN201220468764U CN202849450U CN 202849450 U CN202849450 U CN 202849450U CN 201220468764X U CN201220468764X U CN 201220468764XU CN 201220468764 U CN201220468764 U CN 201220468764U CN 202849450 U CN202849450 U CN 202849450U
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- gas
- blast furnace
- power generation
- excess pressure
- waste heat
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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
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a power generation system capable of recycling excess pressure and waste heat of blast furnace gas, which comprises a blast furnace, a gas boiler and a steam turbine, wherein the top of the blast furnace is provided with a gas discharge hole which is connected with a blast furnace gas excess pressure power generation device by an exhaust pipeline; the exhaust hole of the blast furnace gas excess pressure power generation device is connected with the gas inlet of the gas boiler by a gas pipeline; the steam outlet of the gas boiler is connected with a turbine; and the output end of the turbine is connected with a fan. After the power generation system capable of recycling the excess pressure and the waste heat of the blast furnace gas is adopted, the waste gas generated by industrial emission can be fully recycled, and the pollution to the atmospheric environment can be reduced. The pressure energy, heat energy and chemical energy in the waste gas can be fully recovered, so that the social benefits of saving energy and reducing emission can be achieved. The air pressure and the air quantity provided for the blast furnace are increased, so that the yield of the blast furnace is improved. The gas discharged outside from the blast furnace gas excess pressure power generation device is stable in pressure without a wide range of fluctuation, thus being beneficial to the use of all downstream users.
Description
Technical field
The utility model belongs to the steel industry energy-saving environmental protection device, relates in particular to a kind of power generation system of recycling blast-furnace top gas recovery, waste heat.
Background technology
Traditional ironworks steelmaking furnace all adopt the electric fan Driving Fan to carry out ironmaking production to the blast furnace air feed with wind, such as a 450M
3Blast furnace, the power of motor of its Driving Fan is up to more than the 6000KW, and under the working conditions of this blast, the output of iron generally can reach about 1450 tons/day.Such smelting mode not only will exhaust a large amount of electric energy, simultaneously the lower blast furnace gas (800Kcal/m of calorific value content
3) emptying, caused the pollution to environment.
The utility model content
Problem to be solved in the utility model is for the deficiency in the background technology, and a kind of power generation system of recycling blast-furnace top gas recovery, waste heat is provided.
In order to solve the problems of the technologies described above by the following technical solutions: a kind of power generation system of recycling blast-furnace top gas recovery, waste heat, comprise blast furnace, gas boiler and steam turbine, blast furnace roof is provided with the coal gas relief outlet, the coal gas relief outlet is connected with blast furnace gas excess pressure power generating device by gas exhaust duct, the venting port of blast furnace gas excess pressure power generating device is connected on the inlet mouth of gas boiler by gas line, the vapour outlet of gas boiler is connected with steam turbine, and the output terminal of steam turbine is connected with blower fan.
Described blast furnace gas excess pressure power generating device is comprised of eight large systems, is respectively that host computer system, high-low pressure are transported to electric system, hydraulic efficiency servo-system, lubricating oil system, nitrogen gland stealing system, computer automatic control system, large size valve system and supply and drain water system.
Described host computer system comprises turbine and generator.
The stock gas introducing blast furnace gas excess pressure power generating device that blast furnace is discharged generates electricity, coal gas after the blast furnace gas excess pressure power generating device generating is introduced gas boiler again and is so burnt, drive steam turbine with the steam of boiler combustion, steam turbine again Driving Fan to the blast furnace air feed.
Adopt the utility model, the waste gas of industrial discharge has obtained recycling, has reduced the pollution to atmospheric environment.Pressure energy in the waste gas, heat energy and chemical energy have obtained sufficient recovery, have reached the social benefit of energy-saving and emission-reduction.Increase to blast that blast furnace supplies, air quantity, improved the output of blast furnace.Simultaneously, coal gas is through behind the blast furnace gas excess pressure power generating device, and blast furnace top pressure is stable, for condition has been created in the high and stable yields of blast furnace.The gas pressure of discharging from blast furnace gas excess pressure power generating device is stable, on a large scale fluctuation no longer occurs, is conducive to the use of each usefulness of downstream.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of power generation system of recycling blast-furnace top gas recovery, waste heat comprises blast furnace 1, gas boiler 3 and steam turbine 4.Blast furnace 1 furnace roof is provided with the coal gas relief outlet, the coal gas relief outlet is connected with blast furnace gas excess pressure power generating device 2 by gas exhaust duct, the venting port of blast furnace gas excess pressure power generating device 2 is connected on the inlet mouth of gas boiler 3 by gas line, the vapour outlet of gas boiler 3 is connected with steam turbine 4, the output terminal of steam turbine 4 is connected with blower fan 5, and blower fan 5 is to blast furnace 1 air feed.Be provided with side cooler 6 and air filter 7 on the blower fan 5.
At first, with 450M
3The blast furnace stock gas of discharging introduce blast furnace gas excess pressure power generating device and generate electricity.Cause is from 450M
3The gas pressure that blast furnace roof is discharged is about 130-140KPa, and temperature is 13
0About ℃, through behind the blast furnace gas excess pressure power generating device, its gas pressure is reduced to
10About KPa, temperature can be down to about 25-30 ℃, and its generated energy can reach 2000-2500KW/h.Coal gas after the blast furnace gas excess pressure power generating device generating is introduced gas boiler again and is so burnt, and drives steam turbine with the steam of boiler combustion, steam turbine again Driving Fan to the blast furnace air feed.
A 450M
3Blast furnace, adopted the utility model after, the generated energy of recovery is 45000KW/ days, blast furnace also be increased to 290KPa for wind pressure, the wind supply quantity of steam turbine is amounted to into electric power and is equivalent to 9600KW/h.Produce the iron amount and also be increased to 1950 tons/day.
Blast furnace gas excess pressure power generating device 2(Top Gas Recovery Turbine is called for short TRT) formed by eight large systems, be respectively that host computer system, high-low pressure are transported to electric system, hydraulic efficiency servo-system, lubricating oil system, nitrogen gland stealing system, computer automatic control system, large size valve system and supply and drain water system.Host computer system comprises turbine and generator.
Claims (3)
1. power generation system of recycling blast-furnace top gas recovery, waste heat, comprise blast furnace, gas boiler and steam turbine, it is characterized in that: blast furnace roof is provided with the coal gas relief outlet, the coal gas relief outlet is connected with blast furnace gas excess pressure power generating device by gas exhaust duct, the venting port of blast furnace gas excess pressure power generating device is connected on the inlet mouth of gas boiler by gas line, the vapour outlet of gas boiler is connected with steam turbine, and the output terminal of steam turbine is connected with blower fan.
2. the power generation system of recycling blast-furnace top gas recovery according to claim 1, waste heat, it is characterized in that: described blast furnace gas excess pressure power generating device is comprised of eight large systems, is respectively that host computer system, high-low pressure are transported to electric system, hydraulic efficiency servo-system, lubricating oil system, nitrogen gland stealing system, computer automatic control system, large size valve system and supply and drain water system.
3. the power generation system of recycling blast-furnace top gas recovery according to claim 2, waste heat, it is characterized in that: described host computer system comprises turbine and generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220468764XU CN202849450U (en) | 2012-09-14 | 2012-09-14 | Power generation system capable of recycling excess pressure and waste heat of blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220468764XU CN202849450U (en) | 2012-09-14 | 2012-09-14 | Power generation system capable of recycling excess pressure and waste heat of blast furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202849450U true CN202849450U (en) | 2013-04-03 |
Family
ID=47980670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220468764XU Expired - Fee Related CN202849450U (en) | 2012-09-14 | 2012-09-14 | Power generation system capable of recycling excess pressure and waste heat of blast furnace gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202849450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795718A (en) * | 2020-12-19 | 2021-05-14 | 宣化钢铁集团有限责任公司 | Gas-based direct reduction iron making method and system for controlling nitrogen enrichment |
-
2012
- 2012-09-14 CN CN201220468764XU patent/CN202849450U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795718A (en) * | 2020-12-19 | 2021-05-14 | 宣化钢铁集团有限责任公司 | Gas-based direct reduction iron making method and system for controlling nitrogen enrichment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130914 |