CN103725818B - A kind of hotblast stove low temperature exhaust heat degree of depth recovery system - Google Patents
A kind of hotblast stove low temperature exhaust heat degree of depth recovery system Download PDFInfo
- Publication number
- CN103725818B CN103725818B CN201310728461.6A CN201310728461A CN103725818B CN 103725818 B CN103725818 B CN 103725818B CN 201310728461 A CN201310728461 A CN 201310728461A CN 103725818 B CN103725818 B CN 103725818B
- Authority
- CN
- China
- Prior art keywords
- heat
- degree
- gas
- depth
- air
- 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.)
- Active
Links
Classifications
-
- 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
Abstract
A kind of hotblast stove low temperature exhaust heat degree of depth recovery system, it comprises comburent air duct, burns producer gas pipeline, air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig and exhaust gas of hot-blast stove pipeline; Described comburent air duct is through described air degree of depth heat-exchanger rig, described burning producer gas pipeline is through described coal gas degree of depth heat-exchanger rig, and described air degree of depth heat-exchanger rig and described coal gas degree of depth heat-exchanger rig are connected in parallel on two different positionss of described exhaust gas of hot-blast stove pipeline respectively; Described air degree of depth heat-exchanger rig comprises the air preheater and an air heat exchanger that arrange along air flow, and described coal gas degree of depth heat-exchanger rig comprises along Gas Flow to the gas preheater arranged and a gas change heater.The air degree of depth heat-exchanger rig that the present invention adopts air preheater and air heat exchanger to combine, the coal gas degree of depth heat-exchanger rig that gas preheater and gas change heater combine, make use of the heat in waste gas fully, heat exchange efficiency is greatly improved.
Description
Technical field
the present invention relates to blast furnace in metallurgical industry iron-smelting process heat reclamation device, particularly a kind of hotblast stove low temperature exhaust heat degree of depth recovery system.
Background technology
hotblast stove is one of main equipment of blast furnace in metallurgical industry iron-smelting process, and its function provides coal powder injection hot blast for blast fumance is supporting.Currently be generally supporting 3 ~ 4 hotblast stoves of single seat blast furnace, adopt to burn and send the mode of switching to organize production.Burning stove cycle of hotblast stove generally adopts blast furnace gas to be after heat storage heats by chemical heat that main (exploitation enrichment coal gas is to improve wind-warm syndrome) and combustion air mixed firing produce, discharge the spent air temperture of hotblast stove generally at 250 ~ 350 DEG C, this part waste gas residual heat, after about preheating body hot blast stove burning coal gas and combustion air to 180 DEG C, enters in air through chimney.The spent air temperture of final discharge is generally 150 ~ 180 DEG C, and the waste gas residual heat of this partial discharge still occupies Steel Plant's total energy consumption more than 2%, therefore takes effective means to reclaim hotblast stove low temperature exhaust heat further and for Hot-blast Heating, can produce great economic benefit.
For the degree of depth realizing hotblast stove low temperature exhaust heat reclaims, the representative art of exploitation both at home and abroad has following two kinds:
1) configure heat accumulating type preheating oven, make waste gas separately and the heat exchange of the combustion air degree of depth
This technology is to reduce hotblast stove body efficiency for cost, spent air temperture is risen to more than 600 DEG C, air preheating temperature can be brought up to 600 DEG C, preheating oven waste gas is again after preheating blast furnace gas, with the outlet temperature of 150 ~ 180 DEG C discharge, with this, hot blast temperature of pure burning blast-furnace gas hotblast stove is brought up to 1250 DEG C.The advantage of this technology is: adopted by the heat transferring medium of regenerative heat-exchange the combustion air that temperature is lower, heat exchange efficiency is high, safe and reliable, though can not reduce blast furnace gas consumption, achieves and does not rely on the target that enrichment gas-fired improves hot blast temperature; Its shortcoming is: invest greatly, floor space is large, need to be equipped with complete Controlling System.To sum up, this technology is suitable for newly-built blast furnace ironmaking operation, the user higher to enrichment gas cost has and comprehensively falls this benefit, but this technology significant discomfort share the Optimizing Reconstruction in built complete equipment, require all to be difficult to meet to investment economy, plant layout condition, Controlling System adaptability and the transformation enforcement short period that current a large amount of operating air or gas double pre-heating system optimization are transformed.
2) cryogenic heat exchanger of air or gas double pre-heating is adopted to reclaim (relevant configuration refers to 9,10 in accompanying drawing 1)
Except the employing heat accumulating type preheating oven related to above is implemented except waste heat recovery to exhaust gas of hot-blast stove, be generally used for the interchanger reclaiming hotblast stove low temperature exhaust heat air or gas double pre-heating and also have metal tube, heat pipe, heating agent, board-like and rotary type heat exchanger etc., but between various defect, current be more suitable for low temperature exhaust heat reclaim be metal tube interchanger and hot tube heat exchanger.Wherein hot tube heat exchanger is more suitable for the waste heat recovery for spent air temperture less than 200 DEG C because Low Temperature Difference heat exchange efficiency is relatively high.
The two preheating of general employing metal tube, the minimum funnel temperature of final waste gas 150 ~ 180 DEG C.The current configuration also occurring overall employing hot tube heat exchanger, makes final waste gas funnel temperature be reduced to 90 ~ 120 DEG C, and waste heat recovery rate improves 20 ~ 25%.The advantage of this technology is: achieve low temperature exhaust heat by the Overall Reconstruction of heat-exchange equipment and system and reclaim, its shortcoming is: be not be direct target with less than 150 ~ 180 DEG C waste heats, therefore need to consider to change to recovery system entirety, invest higher; Because temperature, pressure fluctuate by blast-furnace top gas recovery reclaims (TRT technology) impact before gas preheating, low temperature exhaust heat is reclaimed and is difficult to reach darker; Low temperature heat pipe heat exchanger is global design, and low temperature corrosion O&M cost is higher.To sum up, although adopt heat pipe heat exchanging technology to achieve significant low temperature exhaust heat reclaim benefit, also need certain perfect from technology application.
Summary of the invention
The invention provides a kind of hotblast stove low temperature exhaust heat degree of depth recovery system, comprise comburent air duct, burn producer gas pipeline, air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig and exhaust gas of hot-blast stove pipeline; Described comburent air duct is through described air degree of depth heat-exchanger rig, and described burning producer gas pipeline is through described coal gas degree of depth heat-exchanger rig, and described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig are connected with described exhaust gas of hot-blast stove pipeline respectively;
Described exhaust gas of hot-blast stove pipeline one end passes into exhaust gas of hot-blast stove, described exhaust gas of hot-blast stove passes into described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig through described exhaust gas of hot-blast stove pipeline, pass into combustion air in described comburent air duct, burning producer gas pipeline and burn producer gas, described comburent air duct, to burn producer gas ducted gas flow contrary with the flow direction of described waste gas; Pass into described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig exhaust gas of hot-blast stove respectively with described comburent air duct, burn the ducted gas of producer gas and carry out heat exchange, the low temperature waste gas produced after described air degree of depth heat-exchanger rig, the heat exchange of coal gas degree of depth heat-exchanger rig is discharged respectively by pipeline;
Wherein said air degree of depth heat-exchanger rig comprises the air preheater and an air heat exchanger that arrange along air flow, and described coal gas degree of depth heat-exchanger rig comprises along Gas Flow to the gas preheater arranged and a gas change heater.
Preferably, described coal gas degree of depth heat-exchanger rig exit is provided with a temperature control valve (TCV), and described temperature control valve (TCV) is for regulating the exhaust gas of hot-blast stove flow by described coal gas degree of depth heat-exchanger rig.
Preferably, described exhaust gas of hot-blast stove pipeline is provided with a waste gas regulating valve, for regulating the exhausted air quantity passed in described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig.
Preferably, described gas change heater comprises preferential set of heat exchange tubes arranged in parallel and the degree of depth and reclaims and compensate heating pipe group.
Preferably, the described degree of depth reclaims and compensates import and the exit that heating pipe is mounted on described gas change heater, and described preferential set of heat exchange tubes is located at the described degree of depth and is reclaimed between compensation heating pipe group.
Preferably, described degree of depth recovery compensation heating pipe group and preferential set of heat exchange tubes are multiple heat pipes welded together.
Preferably, described air preheater and gas preheater are metal tube interchanger or hot tube heat exchanger, and described gas change heater and air heat exchanger are hot tube heat exchanger.
Present invention also offers a kind of gas degree of depth heat-exchanger rig, it comprises a gas preheater and a gas heat exchanger, and described gas heat exchanger comprises preferential set of heat exchange tubes arranged in parallel and the degree of depth and reclaims and compensate heating pipe group.
Preferably, the described degree of depth reclaims and compensates import and the exit that heating pipe is mounted on described gas heat exchanger, and described preferential set of heat exchange tubes is located at the described degree of depth and is reclaimed between compensation heating pipe group.
Preferably, described degree of depth recovery compensation heating pipe group and preferential set of heat exchange tubes are multiple heat pipes welded together.
The air degree of depth heat-exchanger rig that the present invention adopts air preheater and air heat exchanger to combine, the coal gas degree of depth heat-exchanger rig that gas preheater and gas change heater combine, make use of the heat in waste gas fully, heat exchange efficiency is greatly improved;
The present invention can make optimal control according to the temperature difference before and after gas preheating simultaneously, and properly distributed flows through the exhaust gas flow of air preheater, gas preheater, makes waste heat recovery efficiency reach rational state;
After ensureing that the low temperature waste gas waste heat degree of depth reclaims enforcement, reduce the running cost affecting by external system adjustment and cause because of heat transfer tube low temperature corrosion, the heat pipe of the hot tube heat exchanger set up is by the design of employing grouping plug-in, when blast furnace is in strengthening digestion state for a long time, the recovery tube group that can increase hot tube heat exchanger, to improve waste heat recovery efficiency, is in for a long time when underload is produced and can reduces recovery tube group.
Certainly, implement arbitrary product of the present invention might not need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
Fig. 1 is that double-preheating system structural representation discarded by prior art hotblast stove;
The hotblast stove low temperature exhaust heat degree of depth recovery system structural representation that Fig. 2 provides for the embodiment of the present invention;
The hot tube heat exchanger structural representation that Fig. 3 provides for the embodiment of the present invention;
The metal tube heat exchanger structure schematic diagram that Fig. 4 provides for the embodiment of the present invention;
The hot tube heat exchanger heat pipe heat that Fig. 5 provides for the embodiment of the present invention arranges schematic diagram.
Specific embodiment
Present embodiments provide a kind of hotblast stove low temperature exhaust heat degree of depth recovery system, as shown in Figure 2, it comprises comburent air duct 2, burns producer gas pipeline 8, air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig and exhaust gas of hot-blast stove pipeline 1; Comburent air duct 2 carries out heat exchange by described air degree of depth heat-exchanger rig, burn producer gas pipeline 8 and carry out heat exchange by described coal gas degree of depth heat-exchanger rig, described air degree of depth heat-exchanger rig and described coal gas degree of depth heat-exchanger rig are connected in parallel on two different positionss of exhaust gas of hot-blast stove pipeline 1 respectively;
Exhaust gas of hot-blast stove pipeline 1 one end passes into exhaust gas of hot-blast stove, and the other end is connected with chimney 6; Described exhaust gas of hot-blast stove passes into described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig through exhaust gas of hot-blast stove pipeline 1, pass into combustion air and burn producer gas in comburent air duct 2, burning producer gas pipeline 8, the gas flow in comburent air duct 2, burning producer gas pipeline 8 is contrary with the flow direction of described waste gas; Pass into described air degree of depth heat-exchanger rig, the exhaust gas of hot-blast stove of coal gas degree of depth heat-exchanger rig carries out heat exchange with comburent air duct 2, the gas burnt in producer gas pipeline 8 respectively, the low temperature waste gas produced after described air degree of depth heat-exchanger rig, the heat exchange of coal gas degree of depth heat-exchanger rig is respectively by pipeline flow-direction chimney 6;
Described air degree of depth heat-exchanger rig comprises the air preheater 9 and air heat exchanger 11 that arrange along air flow, and described coal gas degree of depth heat-exchanger rig comprises along Gas Flow to the gas preheater 10 arranged and gas change heater 12.
The present embodiment provides flowing air by burner blower to comburent air duct 2, passes into coal gas by coal gas contact in burning producer gas passage 8.As shown in Figure 2, comburent air duct 2 is provided with an air bypass pipeline through the part in parallel of air degree of depth heat-exchanger rig, and this air bypass pipeline is provided with combustion air bypass valve 3; Burning producer gas pipeline 8 is provided with a coal gas by-pass channel through the part in parallel of coal gas degree of depth heat-exchanger rig, and this coal gas by-pass channel is provided with coal gas bypass valve 7.
The degree of depth heat-exchanger rig of coal gas described in the present embodiment exit is provided with a temperature control valve (TCV) 13, and temperature control valve (TCV) 13 is for regulating the exhaust gas of hot-blast stove flow by described coal gas degree of depth heat-exchanger rig.Exhaust gas of hot-blast stove pipeline 1 is provided with a waste gas regulating valve, for regulating the exhausted air quantity passed in described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig.
As shown in Figure 5, gas change heater 12 is arranged in parallel preferential set of heat exchange tubes 53 and the degree of depth reclaim and compensate heating pipe group 54.The degree of depth reclaims and compensates import and the exit that heating pipe group 54 is located at gas change heater 12, be provided with the gas change heater 12 of the present embodiment two preferential set of heat exchange tubes 53 and two degree of depth reclaim and compensate the preferential set of heat exchange tubes 53 of heating pipe group 54, two and be located at two degree of depth and reclaim and compensate between heating pipe group 54.The degree of depth reclaims compensation heating pipe group 4 and is made up of multiple heat pipe welded together with preferential set of heat exchange tubes 53.
Can reduce according to the needs of heat exchange degree or increase the degree of depth during concrete use and reclaim the quantity compensating heating pipe group 4 and preferential set of heat exchange tubes 3, preferential set of heat exchange tubes 3 is the preferential set of heat exchange tubes arranged, and first increases or reduces the degree of depth and reclaim the quantity compensating heating pipe group 4 during concrete change set of heat exchange tubes quantity.
In the present embodiment, air preheater 9 and gas preheater 10 are metal tube interchanger or hot tube heat exchanger, and gas change heater 12 and air heat exchanger 11 are hot tube heat exchanger.
Embodiment two
Embodiments provide a kind of gas degree of depth heat-exchanger rig, it comprises a gas preheater and a gas heat exchanger, described gas heat exchanger comprises gas preheater and a gas heat exchanger, and described gas heat exchanger comprises preferential set of heat exchange tubes arranged in parallel and the degree of depth and reclaims and compensate heating pipe group.
The described degree of depth reclaims and compensates import and the exit that heating pipe is mounted on described gas heat exchanger, and described preferential set of heat exchange tubes is located at the described degree of depth and is reclaimed between compensation heating pipe group.The described degree of depth reclaims compensation heating pipe group and preferential set of heat exchange tubes is multiple heat pipes welded together.The concrete utilization of the air heat exchanger 11 that the embodiment of the present invention is a kind of and the gas degree of depth heat-exchanger rig that gas change heater 12 provides for the present embodiment.
The present invention is on the legacy system basis that current industry is generally applied, make full use of plant and equipment arrangement space, heat pipe air or gas change heater and waste gas is set up for gas preheating branch road temperature control valve (TCV) at original residual neat recovering system low-temperature region, advise simultaneously but be not limited to reduction improvement cost, the air of the original relative inefficiencies of the system that makes full use of or gas change heater, adopt accompanying drawing 3, four unitized constructions illustrated, gas degree of depth heat-exchanger rig shown in Fig. 3 comprises hot tube heat exchanger 31 and the hot tube heat exchanger 32 of two cascades, gas degree of depth heat-exchanger rig shown in Fig. 4 comprises metal tube interchanger 41 and the hot tube heat exchanger 42 of cascade, that original interchanger with increasing newly is connected, and according to the different modes of original interchanger, be connected according to the air or gas line that carry out exhaust pipeline and high poor efficiency preheater shown in accompanying drawing.
Newly-increased system will configure the monitoring of a small amount of operating parameter and optimal control function, ensure that waste gas is used for the driving of gas preheating branch road temperature control valve (TCV), optimal control can be made according to the temperature difference before and after gas preheating, properly distributed flows through the exhaust gas flow of air or coal gas heat retrieving apparatus, makes waste heat recovery efficiency reach reasonable.
After ensureing that the low temperature waste gas waste heat degree of depth reclaims enforcement, reduce the running cost affecting by external system adjustment and cause because of heat transfer tube low temperature corrosion, the heat pipe of the hot tube heat exchanger set up is by the design of employing grouping plug-in, when blast furnace is in strengthening digestion state for a long time, the recovery tube group of hot tube heat exchanger can be increased to improve waste heat recovery efficiency, be in reverse configuration when underload is produced for a long time, concrete structure refers to accompanying drawing 5: set up hot tube heat exchanger set of heat exchange tubes and arrange schematic diagram.When assembling set of heat exchange tubes, preferential assembling preferential set of heat exchange tubes shown in the drawings is to reduce fluid system resistance.After equipment long-time running, utilizing the blast furnace staying phase to check low-temperature heat exchange pipe group plug-in unit, can consider initiatively to change if any obviously corroding.
After the invention process, for the hotblast stove of the blast furnace gas that only burns, when exhaust gas of hot-blast stove comes out of the stove average funnel temperature about 300 DEG C, 70 ~ 100 DEG C are reduced to by traditional 150 ~ 180 DEG C by making the final funnel temperature of hotblast stove, hotblast stove operation blast furnace gas consumption reduces by 6 ~ 8%, air or gas preheating temperature bring up to 250 ~ 270 DEG C, hotblast stove wind pushing temperature is made to improve 35 ~ 45 DEG C, it is estimated that and can reduce blast furnace coke ratio 6 ~ 8.5kg/tFe, thus for iron and steel enterprise's energy saving and cost lowering produces enormous benefits.
The disclosed preferred embodiment of the present invention just sets forth the present invention for helping above.Preferred embodiment does not have all details of detailed descriptionthe, does not limit the embodiment that this invention is only described yet.Obviously, according to the content of this specification sheets, can make many modifications and variations.This specification sheets is chosen and is specifically described these embodiments, is to explain principle of the present invention and practical application better, thus makes art technician understand well and to utilize the present invention.The present invention is only subject to the restriction of claims and four corner and equivalent.
Claims (6)
1. a hotblast stove low temperature exhaust heat degree of depth recovery system, is characterized in that, comprises comburent air duct, burns producer gas pipeline, air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig and exhaust gas of hot-blast stove pipeline; Described comburent air duct is through described air degree of depth heat-exchanger rig, and described burning producer gas pipeline is through described coal gas degree of depth heat-exchanger rig, and described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig are connected with described exhaust gas of hot-blast stove pipeline respectively;
Described exhaust gas of hot-blast stove pipeline one end passes into exhaust gas of hot-blast stove, described exhaust gas of hot-blast stove passes into described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig through described exhaust gas of hot-blast stove pipeline, pass into combustion air in described comburent air duct, burning producer gas pipeline and burn producer gas, described comburent air duct, to burn producer gas ducted gas flow contrary with the flow direction of described waste gas; Pass into described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig exhaust gas of hot-blast stove respectively with described comburent air duct, burn the ducted gas of producer gas and carry out heat exchange, the low temperature waste gas produced after described air degree of depth heat-exchanger rig, the heat exchange of coal gas degree of depth heat-exchanger rig is discharged respectively by pipeline;
Wherein said air degree of depth heat-exchanger rig comprises the air preheater and an air heat exchanger that arrange along air flow, and described coal gas degree of depth heat-exchanger rig comprises along Gas Flow to the gas preheater arranged and a gas change heater;
Comprise described gas change heater or air heat exchanger preferential set of heat exchange tubes arranged in parallel and the degree of depth reclaim and compensate heating pipe group, reduce or increase the degree of depth reclaim the quantity compensating heating pipe group and preferential set of heat exchange tubes during use according to the needs of heat exchange degree.
2. hotblast stove low temperature exhaust heat degree of depth recovery system as claimed in claim 1, it is characterized in that, described coal gas degree of depth heat-exchanger rig exit is provided with a temperature control valve (TCV), and described temperature control valve (TCV) is for regulating the exhaust gas of hot-blast stove flow by described coal gas degree of depth heat-exchanger rig.
3. hotblast stove low temperature exhaust heat degree of depth recovery system as claimed in claim 1, it is characterized in that, described exhaust gas of hot-blast stove pipe end is connected with a chimney, described exhaust gas of hot-blast stove pipeline is provided with a waste gas regulating valve, and described waste gas regulating valve is for regulating the exhausted air quantity passed in described air degree of depth heat-exchanger rig, coal gas degree of depth heat-exchanger rig.
4. hotblast stove low temperature exhaust heat degree of depth recovery system as claimed in claim 1, it is characterized in that, the described degree of depth reclaims and compensates import and the exit that heating pipe is mounted on described gas change heater, and described preferential set of heat exchange tubes is located at the described degree of depth and is reclaimed between compensation heating pipe group.
5. hotblast stove low temperature exhaust heat degree of depth recovery system as claimed in claim 4, is characterized in that, the described degree of depth reclaims compensation heating pipe group and preferential set of heat exchange tubes is multiple heat pipes welded together.
6. hotblast stove low temperature exhaust heat degree of depth recovery system as claimed in claim 1, it is characterized in that, described air preheater and gas preheater are metal tube interchanger or hot tube heat exchanger, and described gas change heater and air heat exchanger are hot tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728461.6A CN103725818B (en) | 2013-12-26 | 2013-12-26 | A kind of hotblast stove low temperature exhaust heat degree of depth recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728461.6A CN103725818B (en) | 2013-12-26 | 2013-12-26 | A kind of hotblast stove low temperature exhaust heat degree of depth recovery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103725818A CN103725818A (en) | 2014-04-16 |
| CN103725818B true CN103725818B (en) | 2015-10-28 |
Family
ID=50450108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310728461.6A Active CN103725818B (en) | 2013-12-26 | 2013-12-26 | A kind of hotblast stove low temperature exhaust heat degree of depth recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103725818B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100993B (en) * | 2014-06-19 | 2016-02-10 | 钟小葵 | A kind of reciprocating air preheater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237639A (en) * | 1999-05-31 | 1999-12-08 | 宝山钢铁(集团)公司 | High air-temperature high furnace space gas preheating method |
| CN1355323A (en) * | 2001-11-30 | 2002-06-26 | 承德市鸿博科贸有限公司 | Equipment and method for preheating gas and combustion-promoting air 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 |
| CN103353121A (en) * | 2013-07-24 | 2013-10-16 | 江苏海事职业技术学院 | Smoke waste heat deep recycling system for dead-burn blast furnace gas boiler |
-
2013
- 2013-12-26 CN CN201310728461.6A patent/CN103725818B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237639A (en) * | 1999-05-31 | 1999-12-08 | 宝山钢铁(集团)公司 | High air-temperature high furnace space gas preheating method |
| CN1355323A (en) * | 2001-11-30 | 2002-06-26 | 承德市鸿博科贸有限公司 | Equipment and method for preheating gas and combustion-promoting air 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 |
| CN103353121A (en) * | 2013-07-24 | 2013-10-16 | 江苏海事职业技术学院 | Smoke waste heat deep recycling system for dead-burn blast furnace gas boiler |
Non-Patent Citations (3)
| Title |
|---|
| 分离式热管煤气、空气双预热器在上海宝钢4#高炉热风炉上的应用;金万金;《节能技术》;20060331;第24卷(第2期);第161-164页 * |
| 热风炉烟气余热回收利用技术的新进展;夏锋 等;《炼铁》;20111031;第30卷(第5期);第54-56页 * |
| 高炉煤气和助燃空气"双预热"提高高炉风温的研究;金岩 等;《钢铁》;19980630;第33卷(第6期);第54-56页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103725818A (en) | 2014-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102876824B (en) | Method for guaranteeing high blast temperature by using blast furnace gas | |
| CN101839638B (en) | Heat accumulating and preheating combined heating method of slag-drip high-temperature silicon steel plate blank heating furnace | |
| CN202066385U (en) | Novel waste heat recovery and use device | |
| CN101196369A (en) | Heat accumulation-exchange type heating stove and heating method thereof | |
| CN204730682U (en) | A kind of sintering circular-cooler waste heat recovery cigarette wind apparatus | |
| CN202532702U (en) | Top combustion hot-blast stove capable of achieving double preheating through mix of high-temperature smoke and low-temperature smoke | |
| CN201525853U (en) | High-wind-temperature long-life type two-stage double-preheating device | |
| CN200996026Y (en) | Assembled heat-exchanging system for realizing hot blast furnace | |
| CN102557506B (en) | Complete processing equipment of coal gas expanded perlite | |
| CN103438743A (en) | Phase change-dividing-wall-type combined heat exchange system and method for flue gas of heating furnace | |
| CN106967861B (en) | Time-sharing preheating system for combustion air of hot blast stove | |
| CN102620424A (en) | Top combustion stove with layered high and low temperature flue dual-preheating system | |
| CN101928796A (en) | High wind temperature energy saving and emission reduction combined preheating method for blast furnace | |
| CN101928797A (en) | High-blast-temperature energy-saving and emission-reducing combined type preheating system for blast furnace | |
| CN103725818B (en) | A kind of hotblast stove low temperature exhaust heat degree of depth recovery system | |
| CN201621973U (en) | Electric furnace flue gas waste heat recovery utilization device | |
| CN101825399A (en) | Method and device for utilizing exhaust heat of waste gas in sinter cooler | |
| CN207002775U (en) | A kind of hot blast stove system of blast furnace | |
| CN103131812A (en) | Plate-type air and coal gas double-preheating system for hot blast stove | |
| CN201785422U (en) | High-air-temperature energy-saving emission-reduction combined preheating system of blast furnace | |
| CN203174129U (en) | Flue gas self-circulation combustion system of blast furnace hot blast stove | |
| CN202470782U (en) | Secondary smoke residual heat utilization system for hot blast stove | |
| CN210215414U (en) | Blast furnace coal powder injection and hot blast stove air/coal gas series preheating system | |
| CN204739904U (en) | Waste heat recovery sintering ignition furnace | |
| CN202246727U (en) | High-blast-temperature combinative heat exchange system of blast furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |