CN209230285U - A kind of dore furnace with novel burner - Google Patents

Abstract

The utility model relates to a kind of dore furnace with novel burner, including furnace body, rotary kiln and burner, furnace body includes integrally formed vertical component effect and tapered portion, is equipped with feeder pipe on the outside of vertical component effect；The junction of vertical component effect and tapered portion is connected with tertiary-air pipe, burner includes the first burner and the second burner, two the first burner rotational symmetry are set to the middle and lower part position of the air inlet of feeder pipe and tertiary-air pipe, and 15 °~25 ° of the center of the center deviation furnace body of the first burner；Two the second burners are distributed around tapered portion periphery in rotational symmetry, and the center of the second burner is vertical with the center of furnace body, and the first burner and the second burner are interspersed.The utility model adjusts the cavity volume of the second straight pipe and fuel inlet adapter tube by flow adjusting structure by the arrangement of burner and the burner with flow adjusting structure, to achieve the purpose that adjust fuel flow rate.

Description

A kind of dore furnace with novel burner

Technical field

The utility model belongs to dore furnace technical field, more specifically to a kind of decomposition with novel burner Furnace.

Background technique

Dore furnace is the Cement clinker buring another high-temperature service in addition to rotary kiln in the process, consumption firing institute's calorific requirement 60% or so；Currently, people are designed by the functional structure to dore furnace, on the basis of limiting NO_x formation in furnace, The environment for being suitable for nitrogen oxides reduction is created, and then reduces the discharged nitrous oxides of entire firing system；Existing dore furnace In, the tertiary-air pipe into dore furnace is all tangentially to enter dore furnace from the bottom end of upper furnace body cylinder, and coal injection pipe is mounted on decomposition On the upper furnace body of furnace, the coal dust that coal injection pipe sprays, which enters directly into, carries out full combustion in tertiary air；The flow field shape of this structure State is tertiary air after entering dore furnace, is mixed quickly with the kiln exit gas to be spurted by hypocentrum into dore furnace, is formed complicated Unstable gas flowfield, make coal injection pipe spray into dore furnace inside coal dust efficiency of combustion it is low.

In existing cement industry production, burner of decomposition furnace provides 60% or so fuel, is new dry process production One of core equipment of line.Traditional burner of decomposition furnace not can be carried out fuel feed adjusting, fuel feed or it is more, Or it is few, seriously affect clinker, quality, the ton heat consumption of clinker of dry method production line；Or structure is excessively complicated, cost Height cannot reduce a ton heat consumption of clinker, reduce the usage amount of fossil fuel, to mitigate environmental pressure.

Utility model content

The technical problem to be solved by the present invention is to the low technical problems of current dore furnace efficiency of combustion, therefore mention For a kind of dore furnace with novel burner.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of dore furnace with novel burner, including furnace body, rotary kiln and burner, the furnace body include one at The vertical component effect and tapered portion of type, the vertical component effect outside are equipped with feeder pipe；The connection of the junction of the vertical component effect and tapered portion There is tertiary-air pipe, the burner includes the first burner and the second burner, and two the first burner rotational symmetry are set In the middle and lower part position of feeder pipe and the air inlet of tertiary-air pipe, and the center of the center deviation furnace body of first burner 15 °~25 °；Two second burners are distributed around tapered portion periphery in rotational symmetry, and the center of second burner Vertical with the center of furnace body, first burner and the second burner are interspersed.

Preferably, the structure of first burner and the second burner is identical, it include that outer tube, inner tube and fuel enter Mouth adapter tube, the outer tube include integrally formed first straight pipe and the second straight pipe, and second straight pipe has interior convex arc Face, so that the internal diameter of the inner cavity of the second straight pipe is gradually increased from the middle to both ends, and natural transition, the fuel inlet adapter tube It is welded with the second straight pipe, the fuel inlet adapter tube is rectangular tube, has feed inlet in one end, to access inlet tube； Said inner tube is concentric to be set in outer tube, and is connect by support member with outer tube wall, and said inner tube connects close to fuel inlet One end of pipe is connected with flow adjusting structure, to adjust the cavity volume of the second straight pipe and fuel inlet adapter tube.

Preferably, the flow adjusting structure includes adjusting rod and turntable, the both ends of the adjusting rod are respectively provided with The outer surface of one cylindrical section and the second cylindrical section, first cylindrical section and the second cylindrical section all has external screw thread, and the first circle The diameter of shell of column less than the second cylindrical section diameter, first cylindrical section and the second cylindrical section respectively with inner tube and fuel inlet Adapter tube is threadedly coupled, and rotary table section is equipped between first cylindrical section and the second cylindrical section, and second cylindrical section stretches out fuel One end of inlet connection is equipped with turntable.

Preferably, the support member and inner tube are integrally formed.

Preferably, the support member in be equipped with perforation through-hole, the both ends of the through-hole respectively with outer tube and inner tube Between formed cavity connection.

Preferably, the inner wall of the outer tube is equipped with slope section, between the inclined-plane of the slope section and the outer wall of inner tube Distance is gradually increased from close to one end that fuel inlet is taken over to the one end taken over far from fuel inlet.

A kind of dore furnace with novel burner of the utility model has the advantages that the utility model is logical The arrangement of burner and the burner with flow adjusting structure are crossed, the second straight pipe is adjusted by flow adjusting structure The cavity volume taken over fuel inlet, to achieve the purpose that adjust fuel flow rate.

Detailed description of the invention

Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:

Fig. 1 is a kind of structural schematic diagram of dore furnace with novel burner of the utility model；

Fig. 2 is a kind of overlooking structure diagram of dore furnace with novel burner of the utility model；

Fig. 3 is a kind of schematic cross-sectional view of the burner of dore furnace with novel burner of the utility model.

Specific embodiment

For a clearer understanding of the technical features, objectives and effects of the utility model, now control attached drawing is detailed Illustrate specific embodiment of the present utility model.

It should be noted that in the description of the present invention, term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, and is not the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

As depicted in figs. 1 and 2, in a kind of embodiment of dore furnace with novel burner of the utility model, one Kind has the dore furnace of novel burner, including furnace body 1, rotary kiln 2 and burner, and furnace body 1 includes integrally formed vertical component effect 101 and tapered portion 102, feeder pipe 3 is installed on the outside of vertical component effect 101；Vertical component effect 101 and the junction of tapered portion 102 are connected with Tertiary-air pipe 4；More coal injection pipes 7 are separately installed on the outside of vertical component effect 101 and tapered portion 102, burner includes the first burner 5 With the second burner 6, two 5 rotational symmetry of the first burner are set to the middle and lower part position of the air inlet of feeder pipe 3 and tertiary-air pipe 4 It sets, and 10 °~15 ° of the center of the center deviation furnace body 1 of the first burner 5, can both increase the speed that fuel enters in furnace body 1 Degree, and can guarantee full combustion；Two the second burners 5 are distributed around the periphery of tapered portion 102 in rotational symmetry, and the second burning The center of device 6 is vertical with the center of furnace body 1, and the first burner 5 and the second burner 6 are interspersed.Pass through 5 He of the first burner Being interspersed for second burner 6, can be improved the efficiency of combustion of fuel.

In the present embodiment, continuing with shown in Fig. 3, the first burner 5 is identical with the structure of the second burner 6, includes Outer tube 8, inner tube 11 and fuel inlet adapter tube 9, outer tube 8 include integrally formed first straight pipe 801 and the second straight pipe 802, Second straight pipe 802 has interior convex globoidal, so that the internal diameter of the inner cavity of the second straight pipe 802 is gradually increased from the middle to both ends, And natural transition, fuel inlet adapter tube 9 and the welding of the second straight pipe 802, fuel inlet adapter tube 8 are rectangular tube, in one end With feed inlet, to access inlet tube 10.Inner tube 11 is concentric to be set in outer tube 8, and passes through the interior of support member 12 and outer tube 8 Wall connection, inner tube 11 is connected with flow adjusting structure close to one end of fuel inlet adapter tube 9, to adjust 802 He of the second straight pipe The cavity volume of fuel inlet adapter tube 9.

In the present embodiment, flow adjusting structure includes adjusting rod 13 and turntable 14, and the both ends of adjusting rod 13 are respectively provided with The outer surface of one cylindrical section 131 and the second cylindrical section 132, the first cylindrical section 131 and the second cylindrical section 132 all has external screw thread, And first cylindrical section 131 diameter less than the second cylindrical section 132 diameter, the first cylindrical section 131 and the second cylindrical section 132 difference It is threadedly coupled with inner tube 11 and fuel inlet adapter tube 9, rotary table section is equipped between the first cylindrical section 131 and the second cylindrical section 132 133, one end that the second cylindrical section 131 stretches out fuel inlet adapter tube 9 is equipped with turntable 14.Rotate adjustable first cylinder of turntable 14 Section 131 passes in and out inner tube 11, is formed by cavity between the outer wall of rotary table section 133 and the inner wall of the second straight pipe 132 to adjust The size of volume, to adjust the flow of fuel.Circulating line between inner tube 11 and outer tube 8 uses and interior as fuel channel Fuel is not conveyed inside pipe 11.

In the present embodiment, support member 12 and inner tube 11 are integrally formed, and the through-hole 121 of perforation is equipped in support member 12, The cavity that the both ends of through-hole 121 are formed between outer tube 8 and inner tube 11 respectively is connected to, and passes through fuel.

In the present embodiment, the inner wall of outer tube 8 is equipped with slope section 15, between the inclined-plane of slope section 15 and the outer wall of inner tube 11 Distance is gradually increased from one end close to fuel inlet adapter tube 9 to one end far from fuel inlet adapter tube 9, to increase the combustion entered The mobility of material.

The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model Under, many forms can be also made, these belong to the range of the protection of the utility model.

Claims (6)

1. a kind of dore furnace with novel burner, including furnace body, rotary kiln and burner, which is characterized in that the furnace body Including integrally formed vertical component effect and tapered portion, feeder pipe is installed on the outside of the vertical component effect；The vertical component effect and tapered portion Junction is connected with tertiary-air pipe, and the burner includes the first burner and the second burner, two first burners Rotational symmetry is set to the middle and lower part position of the air inlet of feeder pipe and tertiary-air pipe, and the center deviation furnace of first burner 15 °~25 ° of the center of body；Two second burners are distributed around tapered portion periphery in rotational symmetry, and second burning The center of device and the center of furnace body are vertical, and first burner and the second burner are interspersed.

2. a kind of dore furnace with novel burner according to claim 1, which is characterized in that first burner It is identical with the structure of the second burner, it include outer tube, inner tube and fuel inlet adapter tube, the outer tube includes integrally formed the One straight pipe and the second straight pipe, second straight pipe have interior convex globoidal so that the internal diameter of the inner cavity of the second straight pipe from Centre is gradually increased to both ends, and natural transition, and the fuel inlet adapter tube is welded with the second straight pipe, and the fuel inlet connects Pipe is rectangular tube, has feed inlet in one end, to access inlet tube；Said inner tube is concentric to be set in outer tube, and is passed through Support member is connect with outer tube wall, and said inner tube is connected with flow adjusting structure close to one end that fuel inlet is taken over, to adjust Save the cavity volume of the second straight pipe and fuel inlet adapter tube.

3. a kind of dore furnace with novel burner according to claim 2, which is characterized in that the flow adjusts knot Structure includes adjusting rod and turntable, and the both ends of the adjusting rod are respectively provided with the first cylindrical section and the second cylindrical section, first circle The outer surface of shell of column and the second cylindrical section all has external screw thread, and the diameter of the first cylindrical section is less than the diameter of the second cylindrical section, First cylindrical section and the second cylindrical section are threadedly coupled with inner tube and fuel inlet adapter tube respectively, first cylindrical section and the Rotary table section is equipped between two cylindrical sections, one end that second cylindrical section stretches out fuel inlet adapter tube is equipped with turntable.

4. a kind of dore furnace with novel burner according to claim 3, which is characterized in that the support member with Inner tube is integrally formed.

5. a kind of dore furnace with novel burner according to claim 4, which is characterized in that in the support member Through-hole equipped with perforation, the cavity that the both ends of the through-hole are formed between outer tube and inner tube respectively are connected to.

6. a kind of dore furnace with novel burner according to claim 2, which is characterized in that the inner wall of the outer tube Equipped with slope section, the distance between outer wall of the inclined-plane of the slope section and inner tube from close to one end that fuel inlet is taken over to remote One end from fuel inlet adapter tube is gradually increased.