CN104964563A - Self-preheating type sintering ignition furnace - Google Patents
Self-preheating type sintering ignition furnace Download PDFInfo
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- CN104964563A CN104964563A CN201510177256.4A CN201510177256A CN104964563A CN 104964563 A CN104964563 A CN 104964563A CN 201510177256 A CN201510177256 A CN 201510177256A CN 104964563 A CN104964563 A CN 104964563A
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- heat exchanger
- ignition furnace
- heat exchange
- preheating
- sintering ignition
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Abstract
The invention discloses a self-preheating type sintering ignition furnace, and belongs to the field of sintering equipment. The sintering ignition furnace comprises a sintering ignition furnace body, a hot-air conveyer pipe, a gas pipeline and a preheating oven. One end of the hot-air conveyer pipe and one end of the gas pipeline are connected at a burner of the sintering ignition furnace body. The other end of the hot-air conveyer pipe and the other end of the gas pipeline are connected on the preheating furnace. According to the invention, double-pipe heat exchangers are arranged at a holding zone of the ignition furnace, and each double-pipe heat exchanger has a double-layer heat exchange structure, so that the contact area of air or gas and the holding zone is increased, the air or gas can be fully preheated in the heat exchangers, and the heat exchange efficiency is increased; each double-pipe heat exchanger is internally provided with multiple enclosed spaces isolating the hot air and cold air, so that circulation heat exchange efficiency is high; and heat exchange matrixes can be flexibly assembled according to actual demands, and reinforcement pull bars are arranged at connecting portions of the heat exchange matrixes so as to guarantee the connection strength.
Description
Technical field
The present invention relates to agglomerating plant field, specifically, the present invention relates to self-preheating type sintering ignition furnace.
Background technology
Sintering is metallurgy industry, particularly the important component part of steel smelting procedure, is also one of key operation affecting whole smelting process energy consumption index simultaneously.Sintering is for blast furnace process provides a kind of processing method of " fine fodder ", its essence is ready various raw material (concentrate, breeze, fuel, flux, return mine), by a certain percentage through batching, mixing and granulation, obtain satisfactory sintering feed, sintering feed produces high temperature through igniting by the burning of carbon and the oxidation of iron mineral, part composition in sintering feed is softened and fusing, there is the liquid phase that chemical reaction generates some, mutually be bonded to block during cooling, the product of its process is in sintering deposit.
The fuel that present sintering ignition furnace uses mostly is coke-stove gas, coal gas of converter blast furnace gas, although enterprise uses blast furnace gas cost lower, but the calorific value of blast furnace gas is low, sometimes the low ore that causes of the calorific value of blast furnace gas combustion is used merely not reach sintering requirement, the method generally taked now first carries out preheating to air or coal gas, improves ignition temperature, and the general preheating furnace that adopts carries out preheating to air or coal gas at present, although preheat temperature is high, need to consume the more energy.
Summary of the invention
Technical problem to be solved by this invention is: for the feature of above-mentioned blast furnace gas, do not increase preheating furnace, utilize heat hot spot stove combustion air or the coal gas of ignition furnace soaking zone, to reach the requirement of sintering ignition, and be no matter coke-stove gas, coal gas of converter or blast furnace gas as ignition furnace fuel, by high temperature preheating ignition furnace combustion air or the coal gas of ignition furnace soaking zone self, improve firing temperature, meet sintering demand, reach energy-saving and cost-reducing object.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: self-preheating type sintering ignition furnace, comprise sintering ignition furnace body, hot air delivery pipe, gas piping and preheating furnace, one end of described hot air delivery pipe and the road, one end of gas piping are connected on the burner of sintering ignition furnace body, the other end of hot air delivery pipe and the other end of gas piping are connected on preheating furnace, also comprise preheater, described preheater is arranged in preheating furnace and is connected with hot air delivery pipe and gas piping, described preheater comprises heat exchanger tube, heat exchanger tube has many groups, the formation heat exchanger matrix that interconnects is connected between two between heat exchanger tube, described heat exchanger tube is double-decker, outer field is heat exchange extra heavy pipe, internal layer for heat exchange tubule, heat exchange tubule is enclosed within heat exchange extra heavy pipe.
Preferably, described heat exchange extra heavy pipe lateral port is along being connected with lower shrouding, heat exchange tubule lateral port is along being connected with middle shrouding, described lower shrouding is connected with side seal board with middle shrouding, side seal board top is connected with upper sealing plate, described lower shrouding, middle shrouding and side seal board form a three-dimensional confined space, and middle shrouding, upper sealing plate and side seal board form a three-dimensional confined space.
Preferably, described upper sealing plate top is provided with boatswain chair.
Preferably, the connection between any two of described heat exchanger tube is serial or parallel connection.
Preferably, be connected to form whole heat exchanger between two between described heat exchanger matrix, described heat exchanger matrix is provided with many groups.
Preferably, described heat exchanger matrix is provided with reinforced pull rod in junction between any two.
Adopt technical scheme of the present invention, following beneficial effect can be obtained:
Self-preheating type sintering ignition furnace of the present invention, arrange bushing type preheater at the soaking zone of ignition furnace, double pipe heat exchanger has two-layer heat exchange structure, adds the contact area of air or coal gas and soaking zone, make the abundant preheating in preheater of air or coal gas, increase heat exchange efficiency; Bushing type preheater inside is provided with multiple confined space, and hot gas and cold air are kept apart by confined space, and circulation cycle heat exchange efficiency is high; Heat exchanger matrix can freedom and flexibility be assembled according to actual needs, and the junction of heat exchanger matrix is provided with reinforced pull rod and ensures bonding strength.
Accompanying drawing explanation
Brief description is made to the content expressed by each accompanying drawing of this description and the mark in figure below:
Fig. 1 is the structural representation of sintering ignition furnace;
Fig. 2 is sintering ignition furnace pipeline configuration schematic diagram;
Fig. 3 is the front view of Fig. 2;
Fig. 4 is the structural representation of heat exchanger;
Fig. 5 is the structural representation one of heat exchanger tube combination;
Fig. 6 is the structural representation two of heat exchanger tube combination;
Mark in above-mentioned figure is: 1, sintering ignition furnace body; 2, preheating furnace; 3, burner; 4, gas piping; 41, cooled coal gas entrance; 42, heating gas outlet; 43, heating gas carrier pipe; 5, hot air delivery pipe; 6, preheater; 61, heat exchanger matrix; 7, heat exchanger tube; 71, heat exchange extra heavy pipe; 72, heat exchange tubule; 73, lower shrouding; 74, middle shrouding; 75, upper sealing plate; 76, side seal board; 8, boatswain chair.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the effect and operation principle etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
As shown in Figure 1, this preheated sinter ignition furnace comprises sintering ignition furnace body 1 and preheating furnace 2, and sintering ignition furnace body 1 and preheating furnace 2 are arranged on unitary design on same chassis, and burner 3 is arranged on sintering ignition furnace body 1 top and sinters raw material.
As shown in Fig. 2 ~ 3, be this sintering ignition furnace pipeline configuration schematic diagram, cooled coal gas enters in preheater 6 by gas piping 4 and cooled coal gas entrance, and cooled coal gas exports 42 by heating gas and flows to burner combustion through heating gas carrier pipe 43 after the heating of heat exchanger 6; In like manner, if need to carry out preheating to cold air, repeat above-mentioned steps, flow to burner through hot air delivery pipe 5 after preheated to cold air and use.
As shown in Figure 4, for the structural representation of preheater 6 in preheating furnace 2, preheater 6 to be arranged in preheating furnace 2, preheater 6 comprises heat exchanger tube 7, and heat exchanger tube 7 has multiple, connects between two to interconnect to form heat exchanger matrix 61 between heat exchanger tube 7, heat exchanger tube 7 is double-decker, outer field for heat exchange extra heavy pipe 71, internal layer be heat exchange tubule 72, heat exchange tubule 72 is enclosed within heat exchange extra heavy pipe 71.
As shown in Fig. 5 ~ 6, heat exchange extra heavy pipe 71 lateral port is along being connected with lower shrouding 73, and heat exchange tubule 72 lateral port is along being connected with middle shrouding 74, and lower shrouding 73 is connected with side seal board 76 with middle shrouding 74, and side seal board 76 top is connected with upper sealing plate 75; Lower shrouding 73, middle shrouding 74 and side seal board 76 form a three-dimensional confined space, and middle shrouding 74, upper sealing plate 75 and side seal board 76 form a three-dimensional confined space; As shown in Figure 5, cooled coal gas enters lower shrouding 73, middle shrouding 74 and side seal board 76 by cooled coal gas entrance 41 and forms a three-dimensional confined space, then heat exchange extra heavy pipe 71 is entered, due to when being interconnected between multiple heat exchange extra heavy pipe 71 and confined space mentioned above interconnect, so cooled coal gas is full of the heat exchange extra heavy pipe 71 of whole system; Through hole is provided with bottom heat exchange tubule 72, the opening's edge of heat exchange tubule 72 and middle shrouding 74, side seal board 76 and upper sealing plate 75 form a confined space and passage, flow into heat exchange tubule 72 in from the hole bottom heat exchange tubule 72 at the cooled coal gas of preheating in heat exchange extra heavy pipe 71 after heating, then the coal gas of heat all focuses on above heat exchange tubule 72 and exports the use of supply burners by heating gas outlet 42 in confined space.
Sintering ignition furnace heat exchanger tube 7 of the present invention adopts double-decker, and double-deck heat exchanger tube 7 can increase the contact area needing preheating gas and preheating furnace 2, improves the pre-thermal efficiency; Can use by independent assortment between single heat exchanger tube 7, series and parallel connections; Heat exchanger tube 7 can also form heat exchanger matrix 61 in addition, and heat exchanger matrix 61 not only to coal gas but also can carry out preheating to air, and between heat exchanger matrix 61, junction is provided with reinforced pull rod, and reinforced pull rod can reinforce the connection between heat exchanger matrix 61; Upper sealing plate 75 top is provided with boatswain chair 8, and boatswain chair 8 is convenient to lift whole heat exchanger matrix 61.
Point sintering ignition furnace heat exchanger tube of the present invention 7 not only can carry out preheating to coal gas but also can carry out preheating to air, and the pre-thermal efficiency of whole pre-heating system is high.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (6)
1. self-preheating type sintering ignition furnace, comprise sintering ignition furnace body, hot air delivery pipe, gas piping and preheating furnace, one end of described hot air delivery pipe and the road, one end of gas piping are connected on the burner of sintering ignition furnace body, the other end of hot air delivery pipe and the other end of gas piping are connected on preheating furnace, it is characterized in that: also comprise preheater, described preheater is arranged in preheating furnace and is connected with hot air delivery pipe and gas piping, described preheater comprises heat exchanger tube, heat exchanger tube has many groups, the formation heat exchanger matrix that interconnects is connected between two between heat exchanger tube, described heat exchanger tube is double-decker, outer field is heat exchange extra heavy pipe, internal layer for heat exchange tubule, heat exchange tubule is enclosed within heat exchange extra heavy pipe.
2. according to claim 1
frompreheated sinter ignition furnace, it is characterized in that: described heat exchange extra heavy pipe lateral port is along being connected with lower shrouding, heat exchange tubule lateral port is along being connected with middle shrouding, described lower shrouding is connected with side seal board with middle shrouding, side seal board top is connected with upper sealing plate, described lower shrouding, middle shrouding and side seal board form a three-dimensional confined space, and middle shrouding, upper sealing plate and side seal board form a three-dimensional confined space.
3. self-preheating type sintering ignition furnace according to claim 2, is characterized in that: described upper sealing plate top is provided with boatswain chair.
4. self-preheating type sintering ignition furnace according to claim 1, is characterized in that: the connection between any two of described heat exchanger tube is serial or parallel connection.
5. self-preheating type sintering ignition furnace according to claim 1, it is characterized in that: be connected to form whole heat exchanger between two between described heat exchanger matrix, described heat exchanger matrix is provided with many groups.
6. self-preheating type sintering ignition furnace according to claim 5, is characterized in that: described heat exchanger matrix between any two junction is provided with reinforced pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510177256.4A CN104964563A (en) | 2015-04-15 | 2015-04-15 | Self-preheating type sintering ignition furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510177256.4A CN104964563A (en) | 2015-04-15 | 2015-04-15 | Self-preheating type sintering ignition furnace |
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| CN104964563A true CN104964563A (en) | 2015-10-07 |
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| CN201510177256.4A Pending CN104964563A (en) | 2015-04-15 | 2015-04-15 | Self-preheating type sintering ignition furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090918A (en) * | 2016-07-06 | 2016-11-09 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
| CN108343984A (en) * | 2018-04-11 | 2018-07-31 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
| CN109708474A (en) * | 2018-12-19 | 2019-05-03 | 云南玉溪仙福钢铁（集团）有限公司 | Agglomeration for iron mine system without discharged gas fume |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398596Y (en) * | 1999-10-11 | 2000-09-27 | 冶金工业部长沙冶金设计研究院 | Sintering machine blast furnace gas ingniting furnace |
| CN2415325Y (en) * | 2000-04-03 | 2001-01-17 | 冶金工业部长沙冶金设计研究院 | Double preheated sinter ignition furnace |
| CN103575107A (en) * | 2013-07-05 | 2014-02-12 | 芜湖三峰节能设备有限公司 | Self preheating device of energy-saving ignition furnace |
| CN203758257U (en) * | 2013-12-27 | 2014-08-06 | 中冶长天国际工程有限责任公司 | Under-machine type heat exchanger for double-preheating sintering ignition furnace |
-
2015
- 2015-04-15 CN CN201510177256.4A patent/CN104964563A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398596Y (en) * | 1999-10-11 | 2000-09-27 | 冶金工业部长沙冶金设计研究院 | Sintering machine blast furnace gas ingniting furnace |
| CN2415325Y (en) * | 2000-04-03 | 2001-01-17 | 冶金工业部长沙冶金设计研究院 | Double preheated sinter ignition furnace |
| CN103575107A (en) * | 2013-07-05 | 2014-02-12 | 芜湖三峰节能设备有限公司 | Self preheating device of energy-saving ignition furnace |
| CN203758257U (en) * | 2013-12-27 | 2014-08-06 | 中冶长天国际工程有限责任公司 | Under-machine type heat exchanger for double-preheating sintering ignition furnace |
Non-Patent Citations (1)
| Title |
|---|
| 钟建民: "烧结机点火炉燃纯高炉煤气的实践", 《河北冶金》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090918A (en) * | 2016-07-06 | 2016-11-09 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
| CN108343984A (en) * | 2018-04-11 | 2018-07-31 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
| CN109708474A (en) * | 2018-12-19 | 2019-05-03 | 云南玉溪仙福钢铁（集团）有限公司 | Agglomeration for iron mine system without discharged gas fume |
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Application publication date: 20151007 |