CN104807334A - System and method for utilizing low-temperature hot waste gas of circular cooler - Google Patents
System and method for utilizing low-temperature hot waste gas of circular cooler Download PDFInfo
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- CN104807334A CN104807334A CN201510243471.XA CN201510243471A CN104807334A CN 104807334 A CN104807334 A CN 104807334A CN 201510243471 A CN201510243471 A CN 201510243471A CN 104807334 A CN104807334 A CN 104807334A
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Abstract
The invention relates to a system and method for utilizing low-temperature hot waste gas of a circular cooler. The method comprises the following steps: taking low-temperature hot waste gas with the hot-spot temperature of 150-200 DEG C behind a secondary cooling section of the circular cooler and before a ternary cooling section of the circular cooler, sending the low-temperature hot waste gas into a multi-tube deduster 3 from a low-temperature hot waste gas suction hood 10 through a hot air duct 2, sending the clean low-temperature hot waste gas dedusted by the multi-tube deduster 3 into a reheating fan 7, sending the low-temperature hot waste gas into an igniter 11 through an air outlet 8 of the reheating fan 7 and the hot air duct 2 to be used as sintering igniting combustion air. The system and the method have the advantages as follows: 1) energy waste and environmental pollution caused by direct emission of the low-temperature hot waste gas of the circular cooler are avoided; 2) fuel consumption for using blast furnace gas as preheating combustion air is reduced; 3) use of a mixture of high-temperature hot waste gas and cold air as combustion air is reduced; 4) in the recycling process of the low-temperature hot waste gas of the circular cooler, dust can be collected, so that resources are effectively recycled on the premise of avoiding waste and the environmental pollution caused by the direct emission.
Description
Technical field
The invention belongs to technical field of waste heat utilization, particularly a kind of central cooler Low Temperature Thermal waste gas utilize system and Application way.
Background technology
At present, along with the development of SINTERING PRODUCTION technology, environmental demand and the energy make full use of impact, the comprehensive utilization of energy of people to each operation of SINTERING PRODUCTION increases research and experiment dynamics.Along with the development and improvement of the technology such as cogeneration, the high-temperature hot waste gas of current most sintering circular-cooler and rear of sintering machine is all used fully, as central cooler one, two cooling section high-temperature hot waste gas is used to generate electricity and the preheating of sintering feed more, make very large contribution for the using energy source of SINTERING PRODUCTION and cost reduce.And the mode that the many employings of Low Temperature Thermal waste gas of central cooler are directly emptying, be wasted, not only caused the pollution of air, also on the efficiency utilization of the energy, lost position.Trace it to its cause, have too many difficulties to cope with in the utilizing of central cooler Low Temperature Thermal waste gas nothing more than, Low Temperature Thermal waste gas is just as " chicken ribs ".How improving its utilization ratio, make it to have place to show one's prowess, is the research direction of a lot of metallurgical people.
In SINTERING PRODUCTION engineering, extensively promote the use of blast furnace gas carry out igniting operation, although employ novel igniter systems, but in order to reach better utilizing status, generally need carry out preheating to combustion air, and preheating needs to consume a certain amount of blast furnace gas, cause increasing of blast furnace gas consumption.How to reduce or reduce the energy resource consumption of this part, find new alternative energy source? originally, high-temperature hot waste gas near central cooler sinter cake porch is introduced igniter and is used as combustion air by someone, but because its temperature is higher, need to be blended into cold air to reach the serviceability temperature of combustion air requirement, namely still need to be equipped with combustion fan and send into cold air, do not reduce investment outlay, and near blanking point, dust content is comparatively large, need be equipped with more jumbo deduster, increases equipment investment; Simultaneously owing to having taken the hot waste gas of high temperature away a part, follow-up afterheat generating system certainly will be affected, reduce generated energy.Consider that warm-up combustion-supporting air is generally about 150 ~ 200 DEG C, and the temperature of the Low Temperature Thermal waste gas of central cooler is just suitable with it, this have found new ample scope for abilities just to the Low Temperature Thermal waste gas of central cooler.
Summary of the invention
The object of this invention is to provide a kind of safe and reliable, reduce hot waste gas is arranged, resource makes full use of a kind of central cooler Low Temperature Thermal waste gas outward utilize system and Application way.
A kind of central cooler Low Temperature Thermal waste gas of the present invention utilize system, it is characterized in that by after being arranged on central cooler secondary cooling zone, the Low Temperature Thermal waste gas suspended hood of heat-obtaining point before three cold sections, by hot air duct therewith Low Temperature Thermal waste gas suspended hood connect multi-tube dust cleaner, by hot air duct therewith multi-tube dust cleaner connect backheat blower fan, the igniter be connected with backheat blower fan by hot air duct formed, the air inlet end of described multi-tube dust cleaner is connected with Low Temperature Thermal waste gas suspended hood by hot air duct, the exhaust outlet end of described multi-tube dust cleaner is connected with the air intake vent end of backheat blower fan by hot air duct, the exhaust outlet end of described backheat blower fan is connected with the air intake vent end of igniter by hot air duct, described hot air duct multi-tube dust cleaner is arranged on the vacant lot of central cooler middle part.
Heat-insulation layer is provided with outside described hot air duct.
Described heat-insulation layer is rock wool and galvanized iron sheet.
A kind of Application way of central cooler Low Temperature Thermal waste gas, it is characterized in that after central cooler secondary cooling zone, getting hot(test)-spot temperature before three cold sections is that the Low Temperature Thermal waste gas of 150 ~ 200 DEG C sends into multi-tube dust cleaner from Low Temperature Thermal waste gas suspended hood through hot air duct, clean Low Temperature Thermal waste gas after multi-tube dust cleaner dedusting feeds backheat blower fan, and Low Temperature Thermal waste gas is sent into igniter through the exhaust outlet of backheat blower fan and hot air duct and used as the combustion air of sintering ignition.
Advantage of the present invention is: adopt the Low Temperature Thermal waste gas of central cooler can solve following problem as the combustion air use of sintering ignition: the energy waste that the direct discharge 1) avoiding central cooler Low Temperature Thermal waste gas causes and environmental pollution; 2) fuel consumption using blast furnace gas warm-up combustion-supporting air is reduced; 3) reduce and use high-temperature hot waste gas to be blended into cold air to use as combustion air, do not affect cogeneration consumption; 4) can collect dust in central cooler Low Temperature Thermal waste gas recovery process, avoiding waste and effectively reclaiming resource while directly arranging the environmental pollution brought outward, new method is found in the energy-saving and emission-reduction for SINTERING PRODUCTION.
Accompanying drawing explanation
Fig. 1 is the system schematic of the utilization of central cooler Low Temperature Thermal waste gas of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, a kind of central cooler Low Temperature Thermal of the present invention waste gas utilize system, it is characterized in that by after being arranged on central cooler secondary cooling zone, the Low Temperature Thermal waste gas suspended hood 10 of heat-obtaining point before three cold sections, by hot air duct 2 therewith Low Temperature Thermal waste gas suspended hood 10 connect multi-tube dust cleaner 3, by hot air duct 2 therewith multi-tube dust cleaner 3 connect backheat blower fan 7, the igniter 11 be connected with backheat blower fan 7 by hot air duct 2 formed, the air inlet end 4 of described multi-tube dust cleaner 3 is connected with Low Temperature Thermal waste gas suspended hood 10 by hot air duct 2, exhaust outlet 5 end of described multi-tube dust cleaner 3 is connected with air intake vent 6 end of backheat blower fan 7 by hot air duct 2, exhaust outlet 8 end of described backheat blower fan 7 is connected with air intake vent 9 end of igniter 11 by hot air duct 2, consider not additional floor, described multi-tube dust cleaner 3 is arranged on the vacant lot of central cooler 1 middle part by the present invention.Cold section of I representative ring cold one in figure, II representative ring cold secondary cooling zone, III cold section of representative ring cold three.
The Application way of a kind of central cooler Low Temperature Thermal waste gas of the present invention, it is characterized in that after central cooler secondary cooling zone, getting hot(test)-spot temperature before three cold sections is that the Low Temperature Thermal waste gas of 150 ~ 200 DEG C is sent into multi-tube dust cleaner 3 from Low Temperature Thermal waste gas suspended hood 10 through hot air duct 2, clean Low Temperature Thermal waste gas after multi-tube dust cleaner 3 dedusting feeds backheat blower fan 7, and Low Temperature Thermal waste gas is sent into igniter 11 through the exhaust outlet 8 of backheat blower fan 7 and hot air duct 2 and used as the combustion air of sintering ignition.
In order to avoid heat loss and prevent from scalding in the course of conveying of Low Temperature Thermal waste gas as far as possible, whole pipe network hot air duct 2 system is equipped with heat-insulation layer.Its Surgery therapy is made up of rock wool and galvanized iron sheet.
Dust collected by multi-tube dust cleaner, the dust ore deposit groove that the mode of Geldart-D particle can be adopted to send into sintered material room participates in batching, or sends into stock ground storage, to reclaim this part iron dust containing by automobile.
Claims (4)
1. a central cooler Low Temperature Thermal waste gas utilize system, after it is characterized in that comprising and being arranged on central cooler secondary cooling zone, the Low Temperature Thermal waste gas suspended hood of heat-obtaining point before three cold sections, by hot air duct therewith Low Temperature Thermal waste gas suspended hood connect multi-tube dust cleaner, by hot air duct therewith multi-tube dust cleaner connect backheat blower fan, by the igniter that hot air duct is connected with backheat blower fan, the air inlet end of described multi-tube dust cleaner is connected with Low Temperature Thermal waste gas suspended hood by hot air duct, the exhaust outlet end of described multi-tube dust cleaner is connected with the air intake vent end of backheat blower fan by hot air duct, the exhaust outlet end of described backheat blower fan is connected with the air intake vent end of igniter by hot air duct, described hot air duct multi-tube dust cleaner is arranged on the vacant lot of central cooler middle part.
2. central cooler Low Temperature Thermal waste gas according to claim 1 utilize system, it is characterized in that being provided with heat-insulation layer outside described hot air duct.
3. central cooler Low Temperature Thermal waste gas according to claim 2 utilize system, it is characterized in that described heat-insulation layer is rock wool and galvanized iron sheet.
4. the Application way of a central cooler Low Temperature Thermal waste gas, it is characterized in that after central cooler secondary cooling zone, getting hot(test)-spot temperature before three cold sections is that the Low Temperature Thermal waste gas of 150 ~ 200 DEG C sends into multi-tube dust cleaner from Low Temperature Thermal waste gas suspended hood through hot air duct, clean Low Temperature Thermal waste gas after multi-tube dust cleaner dedusting feeds backheat blower fan, and Low Temperature Thermal waste gas is sent into igniter through backheat blower fan exhaust outlet and hot air duct and used as the combustion air of sintering ignition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510243471.XA CN104807334A (en) | 2015-05-13 | 2015-05-13 | System and method for utilizing low-temperature hot waste gas of circular cooler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510243471.XA CN104807334A (en) | 2015-05-13 | 2015-05-13 | System and method for utilizing low-temperature hot waste gas of circular cooler |
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| CN104807334A true CN104807334A (en) | 2015-07-29 |
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| CN201510243471.XA Pending CN104807334A (en) | 2015-05-13 | 2015-05-13 | System and method for utilizing low-temperature hot waste gas of circular cooler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066702A (en) * | 2015-09-17 | 2015-11-18 | 山东钢铁股份有限公司 | Method for igniting air by taking hot air from closed movable ring-shaped container for preheating and sintering |
Citations (7)
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| US4337083A (en) * | 1979-10-22 | 1982-06-29 | Asarco Incorporated | Non-polluting, cooling method and heat recuperative sintering method |
| CN1105391A (en) * | 1994-01-10 | 1995-07-19 | 鞍山钢铁公司 | Sintering method by use of circulated low-temp. waste gas of cooler |
| JPH0968390A (en) * | 1995-08-31 | 1997-03-11 | Sumitomo Metal Ind Ltd | Device and method for cooling sintered ore |
| CN101532783A (en) * | 2009-04-23 | 2009-09-16 | 攀枝花新钢钒股份有限公司 | Hot gas sintering surplus heat utilization system and utilization method thereof |
| CN101865609A (en) * | 2010-06-18 | 2010-10-20 | 昆明理工大学 | New technique for recovering heat energy of cooling waste gas |
| CN103335531A (en) * | 2013-07-16 | 2013-10-02 | 柳州钢铁股份有限公司 | Sintering waste heat power generation exhaust gas recycling utilization system |
| CN204594260U (en) * | 2015-05-13 | 2015-08-26 | 中冶北方（大连）工程技术有限公司 | A kind of central cooler Low Temperature Thermal waste gas utilize system |
-
2015
- 2015-05-13 CN CN201510243471.XA patent/CN104807334A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337083A (en) * | 1979-10-22 | 1982-06-29 | Asarco Incorporated | Non-polluting, cooling method and heat recuperative sintering method |
| CN1105391A (en) * | 1994-01-10 | 1995-07-19 | 鞍山钢铁公司 | Sintering method by use of circulated low-temp. waste gas of cooler |
| JPH0968390A (en) * | 1995-08-31 | 1997-03-11 | Sumitomo Metal Ind Ltd | Device and method for cooling sintered ore |
| CN101532783A (en) * | 2009-04-23 | 2009-09-16 | 攀枝花新钢钒股份有限公司 | Hot gas sintering surplus heat utilization system and utilization method thereof |
| CN101865609A (en) * | 2010-06-18 | 2010-10-20 | 昆明理工大学 | New technique for recovering heat energy of cooling waste gas |
| CN103335531A (en) * | 2013-07-16 | 2013-10-02 | 柳州钢铁股份有限公司 | Sintering waste heat power generation exhaust gas recycling utilization system |
| CN204594260U (en) * | 2015-05-13 | 2015-08-26 | 中冶北方（大连）工程技术有限公司 | A kind of central cooler Low Temperature Thermal waste gas utilize system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066702A (en) * | 2015-09-17 | 2015-11-18 | 山东钢铁股份有限公司 | Method for igniting air by taking hot air from closed movable ring-shaped container for preheating and sintering |
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Application publication date: 20150729 |