CN104121048A - System and method for applying blast furnace hot blast stove burnt gas to blast furnace steam blower - Google Patents
System and method for applying blast furnace hot blast stove burnt gas to blast furnace steam blower Download PDFInfo
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- CN104121048A CN104121048A CN201310141688.0A CN201310141688A CN104121048A CN 104121048 A CN104121048 A CN 104121048A CN 201310141688 A CN201310141688 A CN 201310141688A CN 104121048 A CN104121048 A CN 104121048A
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- ammoniacal liquor
- blast furnace
- turbine
- blower
- hot blast
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Abstract
The invention relates to a system and method for applying blast furnace hot blast stove burnt gas to a blast furnace steam blower. The system mainly comprises an ammonium hydroxide working medium circulating system, an ammonium hydroxide turbine, a steam turbine of a blast furnace blower system and the blower of the blast furnace blower system. The ammonium hydroxide turbine, the steam turbine of the blast furnace blower system and the blower of the blast furnace blower system are coaxially arranged and operated. The blast furnace hot blast stove burnt gas serves as a heat source, liquid ammonium hydroxide is heated to high-temperature and high-pressure gaseous ammonium hydroxide, the ammonium hydroxide turbine is pushed by the high-temperature and high-pressure gaseous ammonium hydroxide to rotate, the steam turbine and the blower of the blast furnace blower system which are coaxial with the ammonium hydroxide turbine are driven to coaxially rotate, and a blast furnace is blown through the blower. Thus, only the capacity of the blast furnace blower needs to be improved, a power generation device for recycling rotating mechanical energy of the ammonium hydroxide turbine does not need to be independently invested, and therefore initial investment cost and operation and maintenance cost are greatly reduced.
Description
Technical field
The present invention relates to a kind of system and method that utilizes of blast furnace and hot blast cupola combustion waste gas thermal source, be specifically related to a kind of by blast furnace and hot blast cupola combustion waste gas thermal source the system and method for blast furnace steam blower.
Background technique
Blast furnace and hot blast cupola combustion waste gas is large-minded, contains larger heat energy.But because temperature is lower, thermal source grade is low, how to utilize is efficiently a difficult problem.Adopt the electricity-generating method of Rankine cycle electricity-generating method or ammonia-water mixture circulation, all may cause because generating efficiency is low drop into be difficult to reclaim or payoff period long problem.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defect that overcomes prior art, the system and method for a kind of blast furnace and hot blast cupola combustion waste gas thermal source for blast furnace steam blower is provided, utilize existing blast furnace steam blower can reclaim expeditiously blast furnace and hot blast cupola combustion waste gas thermal source, do not need sole investment construction system, greatly reduce initial investment cost and operation expense.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of blast furnace and hot blast cupola combustion waste gas is for the method for blast furnace steam blower, it is characterized in that: using blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent into ammoniacal liquor turbine and is promoted the rotation of ammoniacal liquor turbine, steam turbine and the blower of ammoniacal liquor turbine and blast furnace blower system coaxially arrange, the operation of the common belt driven blower of ammoniacal liquor turbine and steam turbine, and by blower to blast furnace air.
By technique scheme, blast furnace and hot blast cupola combustion waste gas, as the thermal source input ammonia-water mixture circulatory system, is heated into liquid ammoniacal liquor by the ammonia-water mixture circulatory system gaseous state ammoniacal liquor of High Temperature High Pressure; In the described ammonia-water mixture circulatory system, aqua ammonia pump, cooling system and heat-exchange system are set, blast furnace and hot blast cupola combustion waste gas enters heat-exchange system, by heat exchange, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of the High Temperature High Pressure of discharging from heat-exchange system is sent into ammoniacal liquor turbine, promotes the rotation of ammoniacal liquor turbine; Low-pressure low-temperature ammoniacal liquor and the weary ammonia of from ammoniacal liquor turbine, discharging are cooled to liquid ammoniacal liquor through cooling system, by aqua ammonia pump supercharging, send into the gaseous state ammoniacal liquor that heat-exchange system is heated into High Temperature High Pressure again, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent to again to be promoted ammoniacal liquor turbine in ammoniacal liquor turbine and rotates.
By technique scheme, the gas of combustion of discharging after heat exchange from the ammonia-water mixture circulatory system drains into hot blast stove chimney.
By technique scheme, described blower sucks atmosphere, and discharge pressurized air is delivered to hot blast stove.
By technique scheme, described steam turbine sucks the high pressure steam from drum, and the low pressure steam after turbine is drained into condenser.
A kind of blast furnace and hot blast cupola combustion waste gas is for the system of blast furnace steam blower, it is characterized in that: mainly comprise steam turbine and the blower of the ammonia-water mixture circulatory system, ammoniacal liquor turbine, blast furnace blower system, and the steam turbine of ammoniacal liquor turbine and blast furnace blower system and the coaxial setting of blower coaxial operation;
Aqua ammonia pump, cooling system and heat-exchange system are set in the ammonia-water mixture circulatory system; Blast furnace and hot blast cupola combustion exhaust gas recirculation passage and high pressure aqua ammonia channel parallel in heat-exchange system; The entrance point of blast furnace and hot blast cupola combustion exhaust gas recirculation passage is communicated with the outlet of the high-temperature flue gas of hot blast stove, and outlet end is communicated with hot blast stove chimney; The entrance point of high pressure aqua ammonia passage is communicated with the outlet end of aqua ammonia pump, and the outlet end of high pressure aqua ammonia passage is connected with the ammoniacal liquor import of ammoniacal liquor turbine; Cooling water circulation passage and low pressure ammoniacal liquor channel parallel in cooling system, the entrance point of low pressure ammoniacal liquor passage is connected with the outlet of the ammoniacal liquor of ammoniacal liquor turbine, and the outlet end of low pressure ammoniacal liquor passage is communicated with the entrance point of aqua ammonia pump.
By technique scheme, the gas input port of blower is communicated with atmosphere, and the pressurized air exhaust port of blower is communicated with hot blast stove.
By technique scheme, the feed-water end of cooling water circulation passage and backwater end are all communicated with external refrigeration tower.
By technique scheme, described steam turbine pressurized gas inlet opening is communicated with drum, and low pressure steam exhaust port is communicated with condenser.
Core of the present invention is: steam turbine and the blower of ammoniacal liquor turbine and blast furnace blower system coaxially arrange, the common belt driven blower operation of ammoniacal liquor turbine and steam turbine, and by blower to blast furnace air, in this scheme, be not limited to and use ammoniacal liquor turbine, as adopted turbine installation or the other forms of energy conversion device of the working medium such as water, freon can realize technique of the present invention with steam turbine and the coaxial setting of blower of blast furnace blower system; The thermal source of heat-exchange system is also not limited to and adopts useless flue gas thermal source to carry out heat exchange, and blast furnace and hot blast cupola combustion waste gas thermal source and other flue gases too can.
Working principle of the present invention is: blast furnace and hot blast cupola combustion waste gas is used for blast furnace air with steam turbine joint work, from the gas of combustion of blast funnace hot blast stove as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure promotes to rotate with the steam turbine of blast furnace blower system and the coaxial ammoniacal liquor turbine of blower, and by blower to blast furnace air.Like this, only need to strengthen the ability of blast furnace blower, not need sole investment for reclaiming the power generating equipment of ammoniacal liquor turbine rotating mechanical energy, greatly reduce initial investment cost and operation expense.
Accompanying drawing explanation
Fig. 1 is that blast furnace and hot blast cupola combustion waste gas of the present invention is for system architecture and the process flow diagram of blast furnace steam blower.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the invention will be further described, but do not limit the present invention.
Blast furnace and hot blast cupola combustion waste gas is as shown in Figure 1 for the method for blast furnace steam blower, it is characterized in that: using blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent into ammoniacal liquor turbine 3 and is promoted 3 rotations of ammoniacal liquor turbine, ammoniacal liquor turbine 3 coaxially arranges with steam turbine 2 and the blower 4 of blast furnace blower system, ammoniacal liquor turbine 2 and common belt driven blower 4 operations of steam turbine 2, and give blast furnace air by blower 4.
By technique scheme, using blast furnace and hot blast cupola combustion waste gas as thermal source, the input ammonia-water mixture circulatory system 1, is heated into liquid ammoniacal liquor by the ammonia-water mixture circulatory system 1 the gaseous state ammoniacal liquor of High Temperature High Pressure; Interior aqua ammonia pump 1.2, cooling system 1.1 and the heat-exchange system 1.3 of arranging of the described ammonia-water mixture circulatory system 1, blast furnace and hot blast cupola combustion waste gas enters heat-exchange system 1.3, by heat exchange, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of the High Temperature High Pressure of discharging from heat-exchange system 1.3 is sent into ammoniacal liquor turbine 3, promotes 3 rotations of ammoniacal liquor turbine; Low-pressure low-temperature ammoniacal liquor and the weary ammonia of from ammoniacal liquor turbine 3, discharging are cooled to liquid ammoniacal liquor through cooling system 1.1, by aqua ammonia pump 1.2 superchargings, send into the gaseous state ammoniacal liquor that heat-exchange system 1.3 is heated into High Temperature High Pressure again, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent to again to be promoted ammoniacal liquor turbine in ammoniacal liquor turbine 3 and rotates.
By technique scheme, by technique scheme, the useless flue gas of discharging from the ammonia-water mixture circulatory system 1 sends back to hot blast stove chimney.
By technique scheme, described blower 4 sucks atmosphere, and discharge pressurized air is delivered to hot blast stove.
By technique scheme, the high pressure steam that described steam turbine 2 sucks from drum, and the low pressure steam after turbine is drained into condenser.
Fig. 1 is that blast furnace and hot blast cupola combustion waste gas is for a kind of mode of execution of the system of blast furnace steam blower, it is characterized in that: mainly comprise steam turbine 2 and the blower 4 of the ammonia-water mixture circulatory system 1, ammoniacal liquor turbine 3, blast furnace blower system, and the steam turbine 2 of ammoniacal liquor turbine 3 and blast furnace blower system and the coaxial setting of air blast 4 machine coaxial operation;
Aqua ammonia pump 1.2, cooling system 1.1 and heat-exchange system 1.3 are set in the ammonia-water mixture circulatory system 1; Blast furnace and hot blast cupola combustion exhaust gas recirculation passage and high pressure aqua ammonia channel parallel in heat-exchange system 1.3; The entrance point of blast furnace and hot blast cupola combustion exhaust gas recirculation passage is communicated with the outlet of the high-temperature flue gas of hot blast stove, and outlet end is communicated with hot blast stove chimney; The entrance point of high pressure aqua ammonia passage is communicated with the outlet end of aqua ammonia pump 1.2, and the outlet end of high pressure aqua ammonia passage is connected with the ammoniacal liquor import of ammoniacal liquor turbine 3; Cooling water circulation passage and low pressure ammoniacal liquor channel parallel in cooling system 1.1, the entrance point of low pressure ammoniacal liquor passage is connected with the outlet of the ammoniacal liquor of ammoniacal liquor turbine 3, and the outlet end of low pressure ammoniacal liquor passage is communicated with the entrance point of aqua ammonia pump 1.2.
The gas input port of blower 4 is communicated with atmosphere, and the pressurized air exhaust port of blower 4 is communicated with hot blast stove.
By technique scheme, the feed-water end of cooling water circulation passage and backwater end are all communicated with external refrigeration tower.
By technique scheme, described steam turbine 2 pressurized gas inlet openings are communicated with drum, and low pressure steam exhaust port is communicated with condenser.
Core of the present invention is: steam turbine and the blower of ammoniacal liquor turbine and blast furnace blower system coaxially arrange, the common belt driven blower operation of ammoniacal liquor turbine and steam turbine, and by blower to blast furnace air, in this scheme, be not limited to and use ammoniacal liquor turbine, as adopted turbine installation or the other forms of energy conversion device of the working medium such as water, freon can realize the present invention with steam turbine and the coaxial setting of blower of blast furnace blower system; The thermal source of heat-exchange system is also not limited to and adopts useless flue gas thermal source to carry out heat exchange, and blast furnace and hot blast cupola combustion waste gas thermal source and other flue gases too can.
Working principle of the present invention is: blast furnace and hot blast cupola combustion waste gas is used for blast furnace air with steam turbine joint work, from the gas of combustion of blast funnace hot blast stove as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure promotes to rotate with the steam turbine of blast furnace blower system and the coaxial ammoniacal liquor turbine of blower, and by blower to blast furnace air.Like this, only need to strengthen the ability of blast furnace blower, not need sole investment for reclaiming the power generating equipment of ammoniacal liquor turbine rotating mechanical energy, greatly reduce initial investment cost and operation expense.
Simultaneously, blast furnace and hot blast cupola combustion waste gas is used for blast furnace air with steam turbine joint work, blast furnace and hot blast cupola combustion waste gas and steam turbine are comprehensively entered to same turbine system, thereby simplified system architecture, and improved the inconvenience that each energy utilization system is set separately, thereby efficiency of energy utilization is higher.
Claims (9)
1. a blast furnace and hot blast cupola combustion waste gas is for the method for blast furnace steam blower, it is characterized in that: using blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent into ammoniacal liquor turbine and is promoted the rotation of ammoniacal liquor turbine, steam turbine and the blower of ammoniacal liquor turbine and blast furnace blower system coaxially arrange, the operation of the common belt driven blower of ammoniacal liquor turbine and steam turbine, and by blower to blast furnace air.
2. method according to claim 1, is characterized in that: blast furnace and hot blast cupola combustion waste gas, as the thermal source input ammonia-water mixture circulatory system, is heated into liquid ammoniacal liquor by the ammonia-water mixture circulatory system gaseous state ammoniacal liquor of High Temperature High Pressure; In the described ammonia-water mixture circulatory system, aqua ammonia pump, cooling system and heat-exchange system are set, blast furnace and hot blast cupola combustion waste gas enters heat-exchange system, by heat exchange, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of the High Temperature High Pressure of discharging from heat-exchange system is sent into ammoniacal liquor turbine, promotes the rotation of ammoniacal liquor turbine; Low-pressure low-temperature ammoniacal liquor and the weary ammonia of from ammoniacal liquor turbine, discharging are cooled to liquid ammoniacal liquor through cooling system, by aqua ammonia pump supercharging, send into the gaseous state ammoniacal liquor that heat-exchange system is heated into High Temperature High Pressure again, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent to again to be promoted ammoniacal liquor turbine in ammoniacal liquor turbine and rotates.
3. method according to claim 2, is characterized in that: the gas of combustion of discharging after heat exchange from the ammonia-water mixture circulatory system drains into hot blast stove chimney.
4. according to the method one of claim 1-3 Suo Shu, it is characterized in that: described blower sucks atmosphere, and discharge pressurized air is delivered to hot blast stove.
5. according to the method one of claim 1-3 Suo Shu, it is characterized in that: described steam turbine sucks the high pressure steam from drum, and the low pressure steam after turbine is drained into condenser.
6. a blast furnace and hot blast cupola combustion waste gas is for the system of blast furnace steam blower, it is characterized in that: mainly comprise steam turbine and the blower of the ammonia-water mixture circulatory system, ammoniacal liquor turbine, blast furnace blower system, and the steam turbine of ammoniacal liquor turbine and blast furnace blower system and the coaxial setting of blower coaxial operation;
Aqua ammonia pump, cooling system and heat-exchange system are set in the ammonia-water mixture circulatory system; Blast furnace and hot blast cupola combustion exhaust gas recirculation passage and high pressure aqua ammonia channel parallel in heat-exchange system; The entrance point of blast furnace and hot blast cupola combustion exhaust gas recirculation passage is communicated with the outlet of the high-temperature flue gas of hot blast stove, and outlet end is communicated with hot blast stove chimney; The entrance point of high pressure aqua ammonia passage is communicated with the outlet end of aqua ammonia pump, and the outlet end of high pressure aqua ammonia passage is connected with the ammoniacal liquor import of ammoniacal liquor turbine; Cooling water circulation passage and low pressure ammoniacal liquor channel parallel in cooling system, the entrance point of low pressure ammoniacal liquor passage is connected with the outlet of the ammoniacal liquor of ammoniacal liquor turbine, and the outlet end of low pressure ammoniacal liquor passage is communicated with the entrance point of aqua ammonia pump.
7. system according to claim 6, is characterized in that: the gas input port of blower is communicated with atmosphere, and the pressurized air exhaust port of blower is communicated with hot blast stove.
8. according to the system described in claim 6 or 7, it is characterized in that: the feed-water end of cooling water circulation passage and backwater end are all communicated with external refrigeration tower.
9. according to the system described in claim 6 or 7, it is characterized in that: described steam turbine pressurized gas inlet opening is communicated with drum, and low pressure steam exhaust port is communicated with condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141688.0A CN104121048A (en) | 2013-04-23 | 2013-04-23 | System and method for applying blast furnace hot blast stove burnt gas to blast furnace steam blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141688.0A CN104121048A (en) | 2013-04-23 | 2013-04-23 | System and method for applying blast furnace hot blast stove burnt gas to blast furnace steam blower |
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| Publication Number | Publication Date |
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| CN104121048A true CN104121048A (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310141688.0A Pending CN104121048A (en) | 2013-04-23 | 2013-04-23 | System and method for applying blast furnace hot blast stove burnt gas to blast furnace steam blower |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5554514A (en) * | 1978-10-13 | 1980-04-21 | Sumitomo Metal Ind Ltd | Operating method for hot blast stove for use of blast furnace |
| CN1614034A (en) * | 2004-08-12 | 2005-05-11 | 陕西鼓风机（集团）有限公司 | Blowing energy recovering method for blast furnace |
| CN201390757Y (en) * | 2009-01-07 | 2010-01-27 | 陕西博尔透平机械有限公司 | Recycling system of blast furnace gas excess pressure and heat energy |
| CN202359136U (en) * | 2011-10-28 | 2012-08-01 | 西安陕鼓动力股份有限公司 | Double-driven blast furnace blower unit |
| CN203257697U (en) * | 2013-04-23 | 2013-10-30 | 中冶南方工程技术有限公司 | System enabling blast furnace hot blast stove burnt gas to be used for blast furnace steam blower |
-
2013
- 2013-04-23 CN CN201310141688.0A patent/CN104121048A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5554514A (en) * | 1978-10-13 | 1980-04-21 | Sumitomo Metal Ind Ltd | Operating method for hot blast stove for use of blast furnace |
| CN1614034A (en) * | 2004-08-12 | 2005-05-11 | 陕西鼓风机（集团）有限公司 | Blowing energy recovering method for blast furnace |
| CN201390757Y (en) * | 2009-01-07 | 2010-01-27 | 陕西博尔透平机械有限公司 | Recycling system of blast furnace gas excess pressure and heat energy |
| CN202359136U (en) * | 2011-10-28 | 2012-08-01 | 西安陕鼓动力股份有限公司 | Double-driven blast furnace blower unit |
| CN203257697U (en) * | 2013-04-23 | 2013-10-30 | 中冶南方工程技术有限公司 | System enabling blast furnace hot blast stove burnt gas to be used for blast furnace steam blower |
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Application publication date: 20141029 |