CN101900489A - Grate-kiln-circular cooler furnace drying device and furnace drying method thereof - Google Patents
Grate-kiln-circular cooler furnace drying device and furnace drying method thereof Download PDFInfo
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- CN101900489A CN101900489A CN 201010275398 CN201010275398A CN101900489A CN 101900489 A CN101900489 A CN 101900489A CN 201010275398 CN201010275398 CN 201010275398 CN 201010275398 A CN201010275398 A CN 201010275398A CN 101900489 A CN101900489 A CN 101900489A
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Abstract
The invention relates to the technical field of grate-kiln-circular cooler furnace drying, in particular to a grate-kiln-circular cooler furnace drying device and a furnace drying method thereof. In the invention, the quantity of hot blast furnaces arranged in non-heat source positions of three main machines of the grate-kiln pelletizing technology is given and the burning capacity of each hot blast furnace is determined, wherein a grate forced-air drying section and a primary cooling section and a secondary cooling section of the circular cooler are respectively provided with one hot blast furnace, hot blast pipelines are reasonably arranged, thermal insulation is carried out on the outside of the hot blast pipelines, and the three main machines are ensured to be in a closed state and not to radiate heat to the outside as far as possible. The hot blast furnaces are closed burning gas fuel, and circular cooler hot blast transmission pipelines and dried hot blast transmission pipelines are integrally-insulated ones. The invention has the advantages that the temperature is controllable; the furnace drying time is controllable; the supplied heat is uniform; different temperatures required by the whole furnace drying curve can be realized; the novel furnace drying device also has the advantages of high burning efficiency, less pollution and the like; and the furnace drying device can also supply heat to the production line during the early production.
Description
Technical field
The present invention relates to chain grate machine-rotary kiln-central cooler furnace technology field, particularly a kind of chain grate machine-rotary kiln-central cooler furnace drying device and furnace drying method thereof.
Background technology
Grate kiln pelletizing process three big main frame refractory materials have important effect, and it directly determines the operating rate of pellet production line.Well-known refractory material (particularly castable refractory) has been built by laying bricks or stones and has been needed through air dry and two processes of baker, and the quality of these two process effects has determined the serviceability of refractory material.The baker process is to make drying out curve according to capabilities of refractory materials, strictly in the baker process carries out according to this curve, otherwise will cause refractory material can not reach best duty, the consequence that can cause refractory material to destroy when serious.Because equipment characteristic drying grate and central cooler do not have direct heat source to provide baker needed heat, the method of taking at present is to adopt toward drying grate, rotary kiln, central cooler interpolation timber to toast refractory material, although such way can provide heat at short notice, but this way has following shortcoming: one, temperature is uncontrollable, can not under a certain temperature, keep constant for a long time, cause the temperature rapid fluctuation easily, refractory material is damaged; Two, provide heat inhomogeneous, adding timber in the burner hearth can not be so even, perhaps burns inhomogeneously all can cause the inhomogeneous of temperature, and so also being needs situation about avoiding in the refractory material baker process; Three, furnace drying time can not guarantee, add the timber difficulty, after having added timber for the first time, because structural limitations can't realize that whole burner hearth adds timber again, can only carry out replenishing of timber to the part, perhaps simply only add one time,, so just shorten furnace drying time greatly like this along with whole baker process of timber afterburnt finishes thereupon; Four, the baker maximum temperature can't guarantee, because the ignition temperature of timber can not reach the desired temperature of drying out curve, therefore, refractory material can't be finished the removal of the crystallization water and the crystallization again of crystal.
Summary of the invention
The purpose of this invention is to provide a kind of chain grate machine-rotary kiln-central cooler furnace drying device.
Another object of the present invention provides a kind of furnace drying method that adopts described chain grate machine-rotary kiln-central cooler furnace drying device.
The objective of the invention is to realize by following technical proposals:
Chain grate machine-rotary kiln of the present invention-central cooler furnace drying device is characterized in that:
1) in chain grate apparatus for forced section a hot-blast stove III is set, connects furnace drying device III and blasting drying period manhole door with hot air duct,
2) at one cold section of central cooler, secondary cooling zone a hot-blast stove I is set, connects furnace drying device I and one cold section of central cooler, secondary cooling zone manhole door with hot air duct,
3) three cold sections of central coolers, four cold sections a hot-blast stove II is set, connects furnace drying device II and three cold sections, four cold sections manhole doors of central cooler with hot air duct,
4) the cover manhole is connected with encircling cold and hot wind conveyance conduit 4 on the hot air duct of hot-blast stove I and one cold section of central cooler, the secondary cooling zone,
5) three, four cold sections of the hot air duct of hot-blast stove II and central coolers are gone up the cover manholes and are encircled cold and hot wind conveyance conduit 5 with another and be connected,
6) the cover manhole is connected with the dry-heat air conveyance conduit on the hot air duct of hot-blast stove III and chain grate apparatus for forced section, the down-draft drying zone,
7) four cold sections of central coolers are connected with the environmental dust removal device by four cold sections hot blast conveying pipe roads 11,
8) on four cold sections hot blast conveying pipe roads 11, electrically operated valve 10 is set.
Hot-blast stove is the closed hot-blast stove of burning gases fuel, by the hot-blast stove body, be arranged on the gaseous fuel burner of this hot-blast stove body one side, the gaseous fuel pipeline that is connected of gaseous fuel burner therewith, the combustion air pipeline, the combustion fan that is connected of combustion air pipeline therewith, be located at the ducted combustion air electrically operated valve of this combustion air, be arranged on the cooling air unit of converting in this hot-blast stove body, convert the cold air duct of converting that cooling air unit is connected therewith, that converts therewith that cold air duct is connected converts the cold wind blower fan, be located at this and convert cold wind electrically operated valve in the cold air duct, with the hot air duct that the outlet of hot-blast stove body is connected, be arranged on the hot blast temperature checkout gear in this hot air duct and the fire box temperature checkout gear that is arranged in the burner hearth of hot-blast stove body is formed.The cold and hot wind conveyance conduit of described ring, dry-heat air conveyance conduit are the pipeline of integral heat insulation.
A kind of furnace drying method that adopts described chain grate machine-rotary kiln-central cooler furnace drying device is characterized in that comprising the steps:
1) one cold section hot blast from the hot-blast stove I of central cooler enters rotary kiln by one cold section backheat wind conveyance conduit 7,
2) the central cooler secondary cooling zone enters chain grate machine preheating I section from the hot blast of hot-blast stove I by secondary cooling zone hot blast conveying pipe road 8,
3) three cold sections hot blasts from the hot-blast stove II of central cooler enter chain grate apparatus for forced section by three cold sections hot blast conveying pipe roads 9,
4) four cold sections hot blasts from the hot-blast stove II of central cooler enter the environmental dust removal device by four cold sections hot blast conveying pipe roads 11,
5) close in the baker process and be arranged on four cold sections electrically operated valves 10 on the hot blast conveying pipe road 11,
6) regularly the slow motion combustion fan, convert the cold wind blower fan, regulate the temperature in whole grate kiln-central cooler burner hearth, regulate hot blast temperature automatically according to heating curve.
According to the present invention, for three big main frames of grate kiln pelletizing process do not have the part of thermal source that hot-blast stove is set and determine the burning capacity of hot-blast stove, the reasonable Arrangement hot air duct is to the outer insulation of hot air duct and guarantee three big main frame is airtight not dispel the heat to the external world as far as possible.
Advantage of the present invention:
1) Controllable Temperature, quantity combusted by adjusting combustion gas and blower fan convert the temperature that cold blast rate realizes providing different range;
2) furnace drying time is controlled, as long as the sufficient supplies of combustion gas just can realize the sustainable supply of heat;
3) provide heat even, because fuel not directly in the burner hearth internal combustion, provides the hot blast that requires temperature can realize being full of whole burner hearth by the baker device, whole like this burner hearth is full of the hot blast of temperature unanimity just can realize evenly heating refractory material;
4) since combustion gas particularly the high heating value combustion gas can provide temperature very high hot blast, this just can realize the different temperatures of whole drying out curve requirement;
5) novel furnace drying device also has advantages such as the efficiency of combustion high pollution is little;
6) this baker device can also provide heat for production line at the production initial stage.
Description of drawings
Fig. 1 is a hot-blast stove structural representation of the present invention.
Fig. 2 is chain grate machine-rotary kiln of the present invention-central cooler furnace drying device structural representation.
The specific embodiment
Below in conjunction with the given embodiment of accompanying drawing, further specify the specific embodiment of the present invention.
As shown in Figure 1, a kind of chain grate machine-rotary kiln-central cooler furnace drying device is characterized in that:
1) in chain grate apparatus for forced section 12 a hot-blast stove III 3 is set, connects hot-blast stove III and blasting drying period 12 manhole doors with hot air duct 6,
2) at one cold section 17 of central cooler, secondary cooling zone 18 a hot-blast stove I 1 is set, connects hot-blast stove I 1 and one cold section of central cooler, secondary cooling zone manhole door with hot air duct,
3) three cold sections 19, four cold sections 20 a hot-blast stove II 2 is set at central cooler, connects hot-blast stove II 2 and three cold sections 19, four cold sections 20 manhole doors of central cooler with hot air duct,
4) the cover manhole is connected with encircling cold and hot wind conveyance conduit 4 on the hot air duct of hot-blast stove I and one cold section 17 of central cooler, the secondary cooling zone 18,
5) hot air duct of hot-blast stove II encircles cold and hot wind conveyance conduit 5 with another and is connected with three cold sections of central coolers, four cold sections last cover manholes,
6) the cover manhole is connected with dry-heat air conveyance conduit 6 on the hot air duct of hot-blast stove III 3 and chain grate apparatus for forced section 12, the down-draft drying zone 13,
7) four cold sections 20 of central coolers are connected with the environmental dust removal device by four cold sections hot blast conveying pipe roads 11,
8) on four cold sections hot blast conveying pipe roads 11, electrically operated valve 10 is set.
As shown in Figure 2, hot-blast stove of the present invention, it is characterized in that this hot-blast stove is the closed hot-blast stove of burning gases fuel, by hot-blast stove body 23, be arranged on the gaseous fuel burner 24 of these hot-blast stove body 23 1 sides, the gaseous fuel pipeline 25 that is connected of gaseous fuel burner 24 therewith, combustion air pipeline 27, the combustion fan 28 that is connected of combustion air pipeline 27 therewith, be located at the combustion air electrically operated valve 26 in this combustion air pipeline 27, be arranged on and convert cooling air unit 32 in this hot-blast stove body 23, that converts therewith that cooling air unit 32 is connected converts cold air duct 30, that converts therewith that cold air duct 30 is connected converts cold wind blower fan 31, be located at this and convert cold wind electrically operated valve 29 in the cold air duct 30, with the hot air duct 22 that the outlet of hot-blast stove body 23 is connected, be arranged on the hot blast temperature checkout gear 21 in this hot air duct and the fire box temperature checkout gear that is arranged in the burner hearth of hot-blast stove body is formed.
The cold and hot wind conveyance conduit of described ring, dry-heat air conveyance conduit are the pipeline of integral heat insulation.
A kind of furnace drying method that adopts described chain grate machine-rotary kiln-central cooler furnace drying device is characterized in that comprising the steps:
1) one cold section 17 hot blast from hot-blast stove I 1 of central cooler enters rotary kiln 16 by one cold section backheat wind conveyance conduit 7,
2) central cooler secondary cooling zone 18 enters chain grate machine preheating I section 14 from the hot blast of hot-blast stove I 1 by secondary cooling zone hot blast conveying pipe road 8,
3) three cold sections 19 hot blasts from hot-blast stove II 2 of central cooler enter chain grate apparatus for forced section 12 by three cold sections hot blast conveying pipe roads 9,
4) four cold sections 20 hot blasts from hot-blast stove II 2 of central cooler enter the environmental dust removal device by four cold sections hot blast conveying pipe roads 11,
5) in the baker process, close and be arranged on four cold sections electrically operated valves 10 on the hot blast conveying pipe road 11,
6) regularly slow motion combustion fan 28, convert cold wind blower fan 31, regulate the temperature in whole grate kiln-central cooler burner hearth, regulate hot blast temperature automatically according to heating curve.
Claims (4)
1. chain grate machine-rotary kiln-central cooler furnace drying device is characterized in that:
1) in chain grate apparatus for forced section a hot-blast stove III is set, connects furnace drying device III and blasting drying period manhole door with hot air duct,
2) at one cold section of central cooler, secondary cooling zone a hot-blast stove I is set, connects furnace drying device I and one cold section of central cooler, secondary cooling zone manhole door with hot air duct,
3) three cold sections of central coolers, four cold sections a hot-blast stove II is set, connects furnace drying device II and three cold sections, four cold sections manhole doors of central cooler with hot air duct,
4) the cover manhole is connected with encircling cold and hot wind conveyance conduit 4 on the hot air duct of hot-blast stove I and one cold section of central cooler, the secondary cooling zone,
5) three, four cold sections of the hot air duct of hot-blast stove II and central coolers are gone up the cover manholes and are encircled cold and hot wind conveyance conduit 5 with another and be connected,
6) the cover manhole is connected with the dry-heat air conveyance conduit on the hot air duct of hot-blast stove III and chain grate apparatus for forced section, the down-draft drying zone,
7) four cold sections of central coolers are connected with the environmental dust removal device by four cold sections hot blast conveying pipe roads 11,
8) on four cold sections hot blast conveying pipe roads, electrically operated valve is set.
2. chain grate machine-rotary kiln according to claim 1-central cooler furnace drying device, it is characterized in that described hot-blast stove is the closed hot-blast stove of burning gases fuel, by the hot-blast stove body, be arranged on the gaseous fuel burner of this hot-blast stove body one side, the gaseous fuel pipeline that is connected of gaseous fuel burner therewith, the combustion air pipeline, the combustion fan that is connected of combustion air pipeline therewith, be located at the ducted combustion air electrically operated valve of this combustion air, be arranged on the cooling air unit of converting in this hot-blast stove body, convert the cold air duct of converting that cooling air unit is connected therewith, that converts therewith that cold air duct is connected converts the cold wind blower fan, be located at this and convert cold wind electrically operated valve in the cold air duct, with the hot air duct that the outlet of hot-blast stove body is connected, be arranged on the hot blast temperature checkout gear in this hot air duct and the fire box temperature checkout gear that is arranged in the burner hearth of hot-blast stove body is formed.
3. chain grate machine-rotary kiln according to claim 1-central cooler furnace drying device is characterized in that the cold and hot wind conveyance conduit of described ring, dry-heat air conveyance conduit are the pipeline of integral heat insulation.
4. a furnace drying method that adopts the described chain grate of claim 1 machine-rotary kiln-central cooler furnace drying device is characterized in that comprising the steps:
1) one cold section hot blast from the hot-blast stove I of central cooler enters rotary kiln by one cold section backheat wind conveyance conduit 7,
2) the central cooler secondary cooling zone enters chain grate machine preheating I section from the hot blast of hot-blast stove I by secondary cooling zone hot blast conveying pipe road,
3) three cold sections hot blasts from the hot-blast stove II of central cooler enter chain grate apparatus for forced section by three cold sections hot blast conveying pipe roads,
4) four cold sections hot blasts from the hot-blast stove II of central cooler enter the environmental dust removal device by four cold sections hot blast conveying pipe roads,
5) close in the baker process and be arranged on four cold sections electrically operated valves on the hot blast conveying pipe road,
6) regularly the slow motion combustion fan, convert the cold wind blower fan, regulate the temperature in whole grate kiln-central cooler burner hearth, regulate hot blast temperature automatically according to heating curve.
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| CN2010102753981A CN101900489B (en) | 2010-09-08 | 2010-09-08 | Grate-kiln-circular cooler furnace drying device and furnace drying method thereof |
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| CN2010102753981A CN101900489B (en) | 2010-09-08 | 2010-09-08 | Grate-kiln-circular cooler furnace drying device and furnace drying method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102175073A (en) * | 2011-02-24 | 2011-09-07 | 中冶北方工程技术有限公司 | Iron ore concentrate drying device and method for pelletizing |
| CN102252530A (en) * | 2011-07-15 | 2011-11-23 | 中冶北方工程技术有限公司 | Novel waste heat utilization and emission reduction process for hot air systems of chain grate machine, rotary kiln and circular cooler |
| CN103664008A (en) * | 2013-11-29 | 2014-03-26 | 南京梅山冶金发展有限公司 | Low-temperature control process for oven baking of annular sleeve kiln |
| CN104019446A (en) * | 2014-06-19 | 2014-09-03 | 宜兴瑞泰耐火材料工程有限公司 | Energy-saving environmentally-friendly boiler baking method for CFB boiler wear-resisting lining engineering |
| CN106326560A (en) * | 2016-08-24 | 2017-01-11 | 中冶华天南京工程技术有限公司 | Device and method for designing curved rail of sintered ring cooling machine |
| CN108332562A (en) * | 2018-03-27 | 2018-07-27 | 中冶北方（大连）工程技术有限公司 | Grate preheating section concurrent heating system |
| CN110157903A (en) * | 2019-06-05 | 2019-08-23 | 中冶北方（大连）工程技术有限公司 | A kind of cooling waste gas recovery of pellet utilizes system and application method |
| CN113188335A (en) * | 2021-04-22 | 2021-07-30 | 江苏省沙钢钢铁研究院有限公司 | Grate rotary kiln hot air system suitable for activated coke desulfurization and denitrification process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102175073A (en) * | 2011-02-24 | 2011-09-07 | 中冶北方工程技术有限公司 | Iron ore concentrate drying device and method for pelletizing |
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| CN103664008B (en) * | 2013-11-29 | 2015-07-22 | 南京梅山冶金发展有限公司 | Low-temperature control process for oven baking of annular sleeve kiln |
| CN104019446A (en) * | 2014-06-19 | 2014-09-03 | 宜兴瑞泰耐火材料工程有限公司 | Energy-saving environmentally-friendly boiler baking method for CFB boiler wear-resisting lining engineering |
| CN106326560A (en) * | 2016-08-24 | 2017-01-11 | 中冶华天南京工程技术有限公司 | Device and method for designing curved rail of sintered ring cooling machine |
| CN106326560B (en) * | 2016-08-24 | 2019-09-06 | 中冶华天南京工程技术有限公司 | Sintering circular-cooler bend designs device and its design method |
| CN108332562A (en) * | 2018-03-27 | 2018-07-27 | 中冶北方（大连）工程技术有限公司 | Grate preheating section concurrent heating system |
| CN110157903A (en) * | 2019-06-05 | 2019-08-23 | 中冶北方（大连）工程技术有限公司 | A kind of cooling waste gas recovery of pellet utilizes system and application method |
| CN110157903B (en) * | 2019-06-05 | 2023-04-28 | 中冶北方（大连）工程技术有限公司 | Pellet ore cooling waste gas recycling system and using method |
| CN113188335A (en) * | 2021-04-22 | 2021-07-30 | 江苏省沙钢钢铁研究院有限公司 | Grate rotary kiln hot air system suitable for activated coke desulfurization and denitrification process |
| CN113188335B (en) * | 2021-04-22 | 2023-12-26 | 江苏省沙钢钢铁研究院有限公司 | Chain grate rotary kiln hot air system suitable for active coke desulfurization and denitrification process |
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