CN103130429A - Middle combustion beam for shaft furnace - Google Patents
Middle combustion beam for shaft furnace Download PDFInfo
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- CN103130429A CN103130429A CN2011103803107A CN201110380310A CN103130429A CN 103130429 A CN103130429 A CN 103130429A CN 2011103803107 A CN2011103803107 A CN 2011103803107A CN 201110380310 A CN201110380310 A CN 201110380310A CN 103130429 A CN103130429 A CN 103130429A
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Abstract
The present invention discloses a middle combustion beam for a shaft furnace. The middle combustion beam comprises a cavity and more than one middle combustion nozzle assemblies arranged inside the cavity, wherein the bottom of the cavity is provided with a flame jet port, and the cavity is formed by overlapping and enclosing a plurality of water cooling beams. The middle combustion beam has advantages of long service life, low operation cost, good operation reliability and the like.
Description
Technical field
The present invention is mainly concerned with the furnace equipment field, refers in particular to a kind of burning beam for kiln.
Background technology
The limestone kiln shaft furnace is a kind of to natural limestone CaCO
3Calcine, by following reaction: CaCO
3+ heat → CaO+CO
2, a kind of processing unit of generation lime is widely used in the industries such as iron and steel, building materials, is requisite a kind of industrial equipments in this type of industry; It also can be used for the roasting of other lumpy materials, as rhombspar etc.The horizontal section of this equipment is generally circle, semicircle, ellipse, rectangle.In process of production, Wingdale or rhombspar raw material from the top-loaded to the shaft furnace in, raw material from top to bottom sequentially by preheating zone, be positioned at calcining zone, afterfire district, cooling zone and the product outlet district at the burning beam place that is provided with two or three burners.In this process, burning beam is in the highest calcining zone of temperature always, and the quality and quantity of the Wingdale of producing all depends on the working order of burning beam, or perhaps burning beam the combustion processes burning area that produces and the effect of burning.Therefore, the structure of burning beam and life-span are played very critical effect to the production in limestone kiln.
As Fig. 1, Fig. 2 and shown in Figure 3, conventional burning beam is the normally chamber structure of rectangle or T shape of cross section, its internal space is used for holding fuel conduit, the top is oil cooling system 100, and the chamber roof outer wall is provided with flame retardant coating 200, is provided with opening on the sidewall of burning beam or lower wall, for the fuel ejiction opening 300 of fuel conduit provides passage, fuel is through fuel ejiction opening 300 ejection, with the air mixed afterfire in shaft furnace, thereby reaches the purpose of burning.The oil cooling system 100 of existing burning beam is the chamber structure of cooling oil section's continuous circulation running within it.Reduce the working temperature of burning beam by oil cooling, reach the purpose of cooling combustion beam.
The middle burning beam structure of prior art has following shortcoming:
1. burning beam all is welded by steel, only spray certain thickness refractory materials at key position (as the oil cooling top of chamber), its most structures long-term exposure among hot environment, directly contact with the high-temperature material that is calcined aborning, produce friction, easily cause its structure breaking.Simultaneously, because it is subject to being calcined in a large number the top-down shock action of material for a long time, so the Peril Incident of the beam that can collapse, disconnected beam.
Due to most of structure long-term exposure in hot environment, cause extreme temperatures in cooling chamber, therefore can not use at high temperature the water (after being the water evaporation, the phenomenon of impurity bonding) of easily fouling to be used as heat-eliminating medium, can only select oil.And investment and the maintenance cost of oil cooling system 100 are all higher, and can't in time be found and repair due to frequent leakage of oil, have lost a large amount of oily resources, cause energy dissipation.
3. limit by cavity geometry, fuel most of heats of when ejection concentrate under cavity, can't homogeneous heating treat the material of roasting, easily cause the problems such as the roasting amount is low, energy consumption consumption is large.Simultaneously, because bottom construction outside burning beam is straight, do not possess guide effect, so bottom flame is more concentrated, burning area is less.
Summary of the invention
The technical problem to be solved in the present invention just is: the technical problem for prior art exists, the invention provides a kind of longer service life, running cost is lower, burning area is larger, and serviceability better is used for the middle burning beam of shaft furnace.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of middle burning beam for shaft furnace comprises cavity and is installed in the interior more than one middle burner assembly of cavity that the bottom of described cavity offers the flame ejiction opening, and described cavity is enclosed by many water-cooled beams overlap joints and forms.
As a further improvement on the present invention:
Be enclosed with refractory masses on the outside surface of described water-cooled beam.
Be connected by anchor nails between described water-cooled beam and refractory masses.
The many water-cooled beams at place, described cavity top from top to bottom overlap successively and form two-layer above clad structure.
Described refractory masses is circular-arc being positioned at place, chamber outer surface top.
Described refractory masses at the bottom place that is positioned at cavity, flame ejiction opening both sides are circular-arc.
Middle part in described cavity is provided with strut member, being supported at both ends on water-cooled beam of described strut member, and described middle burner assembly is installed on strut member.
Compared with prior art, the invention has the advantages that:
1, middle burning beam of the present invention is arranged at the middle burner assembly at the middle part of whole burning beam, under the protection of water-cooled beam action and refractory masses, it is worked all the time in environment of safety at a relative low temperature, has extended its work-ing life;
2, middle burning beam of the present invention wraps up it by increasing refractory masses, has reduced temperature in the middle burning beam cavity, make existing oil cooling structure into water-cooling structure, reduce investment and maintenance cost, and reduced the consumption of oily resource, saved cost;
3, middle burning beam of the present invention, by changing the shape of middle burning beam cavity outside, reaching increases kiln internal combustion area, improves the volume hot strength, improves thermo-efficiency, and the increasing ignition quality reduces the purposes such as energy consumption.
Description of drawings
Fig. 1 is the cross sectional representation of the middle burning beam of prior art;
Fig. 2 is that B in Fig. 1 is to structural representation;
Fig. 3 be in Fig. 1 the A-A place analyse and observe the structure for amplifying schematic diagram
Fig. 4 is the structural representation of the specific embodiment of the invention;
Fig. 5 is that D in Fig. 4 is to structural representation;
Fig. 6 be in Fig. 4 the C-C place analyse and observe the structure for amplifying schematic diagram;
Fig. 7 is the structural representation of the first cavity profile in specific embodiment;
Fig. 8 is the structural representation of the second cavity profile in specific embodiment;
Fig. 9 is the structural representation of the third cavity profile in specific embodiment;
Figure 10 is the structural representation of the 4th kind of cavity profile in specific embodiment.
Marginal data:
1, refractory masses; 2, anchor nails; 3, water-cooled beam; 4, middle burner assembly; 41, gas pipe; 42, burner spout; 5, cavity; 6, flame ejiction opening; 7, strut member; 100, oil cooling system; 200, flame retardant coating; 300, fuel ejiction opening.
Embodiment
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
As Fig. 4, Fig. 5 and shown in Figure 6; the present invention is used for the middle burning beam of shaft furnace; comprise cavity 5 and be installed in the interior more than one middle burner assembly 4 of cavity 5; the bottom of cavity 5 offers flame ejiction opening 6; cavity 5 is enclosed by many water-cooled beams 3 overlap joints and forms; water-cooled beam 3 passes into recirculated water when work, the temperature when working to reduce middle burner assembly 4, thereby protection middle burner assembly 4.Water-cooled beam 3 can adopt weldless steel tube, and it is firm in structure, and weight capacity is strong, and is not easily broken, and the phenomenon of seepage can not occur.By making existing oil cooling structure into water-cooling structure, reduced investment and maintenance cost, also further reduced the consumption of oily resource, save cost.
In the present embodiment, be enclosed with refractory masses 1 on the outside surface of several water-cooled beam 3 cavitys that form 5, this refractory masses 1 is used for water-cooled beam 3 and middle burner assembly 4 are kept apart from abominable Working environment, to extend their life-span.Referring to Fig. 4, Fig. 5 and Fig. 6, be connected by anchor nails 2 between water-cooled beam 3 and refractory masses 1, between anchor nails 2 and water-cooled beam 3 by being welded and fixed.Like this, middle burner assembly 4 middle parts that are positioned at whole burning beam under the protection of the effect of water-cooled beam 3 and refractory masses 1, are able at a relative low temperature and work in the environment of safety.
Because the High Temperature Gas in cavity 5 is known from experience up liter, therefore can form a high-temperature area at the top of cavity 5, make under its hot soak condition.In the present embodiment, the many water-cooled beams 3 that further make cavity 5 tops places from top to bottom successively overlap joint form two-layer above clad structure, be used for strengthening the cooling performance at this place, also can be in order to heat insulation, load-bearing and the impact resistance that strengthens whole burning beam.Above-mentioned by the many water-cooled beams 3 two-layer above clad structure that forms of overlap joint successively from top to bottom, the shape in its cross section can be trilateral, trapezoidal etc.
In the present embodiment, refractory masses 1 be positioned at cavity 5 outside surface tops and bottom the place be circular-arc.It is in order to make the material in shaft furnace easier to be descending, also to make flame profile more smooth, the overheavy firing effect that the place, top of cavity 5 outside surfaces is circular-arc.And to be circular-arc be for shape that fuel is jetted out flames is more smooth cavity 5 bottoms, flame ejiction opening 6 places, both sides, and flame is played certain guide functions, increase burning area, thereby homogeneous heating treated the material of roasting, the overheavy firing effect.
In other embodiments, as shown in Figure 7, refractory masses 1 also can be the square edge form at the place, bottom of cavity 5; Or as shown in Figure 8, refractory masses 1 can be also that step-like, topmost is horizontal plane for the square edge form and at the top of cavity 5 at place, the bottom of cavity 5; Or as shown in Figure 9, refractory masses 1 is only step-like at the top of cavity 5, and topmost is horizontal plane; Or as shown in figure 10, refractory masses 1 is only tip-angled shape at the top of cavity 5.
In the present embodiment, middle burner assembly 4 comprises gas pipe 41 and the more than one burner spout 42 that is connected on gas pipe 41.Referring to Fig. 4, the middle part in cavity 5 is provided with strut member 7, and on water-cooled beam 3, gas pipe 41 just is erected on strut member 7, can directly extract and insert during replacing, and is very convenient by Weld-supporting at the two ends of strut member 7.
In production process, a flame ejiction opening 6 is just arranged on the gas pipe 41 of middle burner assembly 4 at a certain distance, coal gas is by 6 ejections of flame ejiction opening, fully mix and burn with the air in cavity 5, even flame ejection also is fan-shaped along the arc refractory masses 1 of middle burning beam outside and disperses out, to the material homogeneous heating roasting in shaft furnace; Simultaneously, the water-cooled beam 3 that is loaded with recirculated cooling water constantly carries out heat exchange with middle burner assembly 4 ambient airs, with the working temperature of reduction middle burner assembly 4.Outside refractory masses 1 tightly wraps up above-mentioned all devices, has also played water conservancy diversion and the effect of revising flame profile in the interior middle burner assembly 4 of protection cavity 5, makes the igniting effect more desirable, and quality product is better.
Be only below the preferred embodiment of the present invention, protection scope of the present invention also not only is confined to above-described embodiment, and all technical schemes that belongs under thinking of the present invention all belong to protection scope of the present invention.Should be pointed out that for those skilled in the art, the some improvements and modifications not breaking away under principle of the invention prerequisite should be considered as protection scope of the present invention.
Claims (7)
1. middle burning beam that is used for shaft furnace, comprise cavity (5) and be installed in the interior more than one middle burner assembly (4) of cavity (5), the bottom of described cavity (5) offers flame ejiction opening (6), it is characterized in that: described cavity (5) is enclosed by many water-cooled beams (3) overlap joint and forms.
2. the middle burning beam for shaft furnace according to claim 1, is characterized in that: be enclosed with refractory masses (1) on the outside surface of described water-cooled beam (3).
3. the middle burning beam for shaft furnace according to claim 2 is characterized in that: be connected by anchor nails (2) between described water-cooled beam (3) and refractory masses (1).
4. according to claim 1 and 2 or 3 described middle burning beams for shaft furnace is characterized in that: the many water-cooled beams (3) at place, described cavity (5) top from top to bottom successively overlap joint form two-layer above clad structure.
5. the middle burning beam for shaft furnace according to claim 2 is characterized in that: described refractory masses (1) is circular-arc being positioned at place, cavity (5) outside surface top.
6. the middle burning beam for shaft furnace according to claim 2 is characterized in that: described refractory masses (1) in the bottom that is positioned at cavity (5), place, flame ejiction opening (6) both sides is circular-arc.
7. according to claim 1 and 2 or 3 described middle burning beams for shaft furnace, it is characterized in that: the middle part in described cavity (5) is provided with strut member (7), being supported at both ends on water-cooled beam (3) of described strut member (7), described middle burner assembly (4) is installed on strut member (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103803107A CN103130429A (en) | 2011-11-25 | 2011-11-25 | Middle combustion beam for shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103803107A CN103130429A (en) | 2011-11-25 | 2011-11-25 | Middle combustion beam for shaft furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103130429A true CN103130429A (en) | 2013-06-05 |
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ID=48490942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103803107A Pending CN103130429A (en) | 2011-11-25 | 2011-11-25 | Middle combustion beam for shaft furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997012188A1 (en) * | 1995-09-26 | 1997-04-03 | David Mitchell Limited | Fluidized bed lime kiln |
| CN101456684A (en) * | 2009-01-09 | 2009-06-17 | 贾会平 | Lime burner using solid fuels |
| CN101871723A (en) * | 2010-06-08 | 2010-10-27 | 石家庄博广热能科技有限公司 | Internal combustion-type magnetic roasting shaft furnace |
| CN201626917U (en) * | 2010-01-19 | 2010-11-10 | 杨霞 | Combustion beam for lime kiln |
| CN202322648U (en) * | 2011-11-25 | 2012-07-11 | 中冶长天国际工程有限责任公司 | Middle burning beam used for vertical furnace |
-
2011
- 2011-11-25 CN CN2011103803107A patent/CN103130429A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997012188A1 (en) * | 1995-09-26 | 1997-04-03 | David Mitchell Limited | Fluidized bed lime kiln |
| CN101456684A (en) * | 2009-01-09 | 2009-06-17 | 贾会平 | Lime burner using solid fuels |
| CN201626917U (en) * | 2010-01-19 | 2010-11-10 | 杨霞 | Combustion beam for lime kiln |
| CN101871723A (en) * | 2010-06-08 | 2010-10-27 | 石家庄博广热能科技有限公司 | Internal combustion-type magnetic roasting shaft furnace |
| CN202322648U (en) * | 2011-11-25 | 2012-07-11 | 中冶长天国际工程有限责任公司 | Middle burning beam used for vertical furnace |
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Application publication date: 20130605 |