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CN-224215799-U - Cement kiln tail burner for alternative fuel

CN224215799UCN 224215799 UCN224215799 UCN 224215799UCN-224215799-U

Abstract

The cement kiln tail burner for the alternative fuel comprises a coal powder burner body, wherein a coal powder conveying device and a pneumatic conveying device are communicated with the coal powder burner body, an alternative fuel channel is further arranged in the coal powder burner body, an alternative fuel conveying device is arranged on the outer side of the coal powder burner body, the alternative fuel conveying device comprises a cylindrical fuel scattering chamber, a fuel scattering assembly is arranged in the middle of the fuel scattering chamber, the fuel scattering assembly comprises a conical scattering cylinder and a scattering unit, the diameter of the bottom of the conical scattering cylinder is larger than that of the top of the conical scattering cylinder, and the lower portion of the conical scattering cylinder and the inner wall of the fuel scattering chamber form an annular channel for the alternative fuel to fall. According to the utility model, the replacement fuel conveying device communicated with the raw coal powder burner is added on the basis of the raw coal powder burner, so that the replacement fuel conveying device can be opened before carbon emission exceeds standard, the replacement fuel is conveyed to the burner through the replacement fuel conveying device, the generation and emission of nitrogen oxides are reduced, and the replacement fuel can be crushed biological fuel.

Inventors

  • Geng Huanrui
  • YANG CHENGHU
  • LI GANG

Assignees

  • 山东信贶节能环保有限公司

Dates

Publication Date
20260508
Application Date
20250609

Claims (10)

  1. 1. The cement kiln tail burner for the alternative fuel comprises a coal powder burner body (1), wherein a coal powder conveying device (2) and a pneumatic conveying device (3) are communicated with the coal powder burner body (1), a coal powder channel which is correspondingly communicated with the coal powder conveying device (2) is arranged in the coal powder burner body (1), and the cement kiln tail burner is characterized in that an alternative fuel channel (4) is also arranged in the coal powder burner body (1), and an alternative fuel conveying device is arranged outside the coal powder burner body (1); The replacement fuel conveying device comprises a cylindrical fuel scattering chamber (5), the upper end of the fuel scattering chamber (5) is a feeding hole, the lower end of the fuel scattering chamber is communicated with a replacement fuel channel (4) through a conveying unit, a fuel scattering component is arranged in the middle of the fuel scattering chamber (5), the fuel scattering component comprises a conical scattering cylinder (6) and a scattering unit which are sequentially arranged from top to bottom, the axis of the conical scattering cylinder (6) is coaxial with the axis of the fuel scattering chamber (5), the bottom diameter of the conical scattering cylinder (6) is larger than the top diameter, an annular channel for the replacement fuel to fall is formed between the lower part of the conical scattering cylinder (6) and the inner wall of the fuel scattering chamber (5), and the scattering unit corresponds to the annular channel.
  2. 2. The cement kiln tail burner for alternative fuels according to claim 1, characterized in that the scattering unit comprises a rotating shaft (7) and a motor (8) connected with the rotating shaft, the motor (8) is arranged in the conical dispersing cylinder (6), the axis of the rotating shaft (7) is coaxial with the axis of the conical dispersing cylinder (6), a plurality of scattering rods (10) are arranged on the rotating shaft (7) along the length direction of the rotating shaft, and one end of the scattering rods (10) far away from the rotating shaft (7) extends to the position right below the annular channel.
  3. 3. The cement kiln tail burner for alternative fuels according to claim 2, characterized in that the vertical distance between the bottom end of the conical dispersion cylinder (6) and the inner wall of the fuel scattering chamber (5) is 0.5-5cm greater than the vertical distance between the outer end of the scattering rod (10) and the inner wall of the fuel scattering chamber (5).
  4. 4. The cement kiln tail burner for alternative fuels according to claim 2, characterized in that a plurality of the scattering bars (10) are all connected perpendicularly to the rotation axis (7), and the scattering bars (10) are staggered.
  5. 5. The cement kiln tail burner for alternative fuels according to claim 1, characterized in that the conveying unit is a screw conveyor (11), the screw conveyor (11) is arranged obliquely downwards, the screw conveyor (11) is provided with a feed port (1101) and a discharge port (1102), the feed port (1101) is communicated with the lower port of the fuel scattering chamber (5), and the discharge port (1102) is communicated with the alternative fuel channel (4).
  6. 6. The cement kiln tail burner for alternative fuels according to claim 1, characterized in that the outer conical surface of the conical dispersion cylinder (6) is welded with a plurality of oblique ribs (12) along the direction of the bus line thereof.
  7. 7. The cement kiln tail burner for alternative fuels according to claim 6, wherein the inclined rib (12) is provided with a scattering tip (13) on a surface far away from the outer conical surface, and the scattering tip (13) is arranged along the length direction of the inclined rib (12).
  8. 8. The cement kiln tail burner for alternative fuels according to claim 1, characterized in that the lower part of the cone-shaped dispersion cylinder (6) is detachably connected to the inner wall of the fuel break-up chamber (5) by means of a plurality of connecting pieces (14).
  9. 9. The cement kiln tail burner for alternative fuels according to claim 2, characterized in that the motor (8) is connected with the conical dispersion cylinder (6) by means of L-shaped connection plates (9), the L-shaped connection plates (9) being symmetrically provided with two.
  10. 10. An alternative fuel cement kiln tail burner according to claim 5, characterized in that the inclination angle of the screw conveyor (11) is 30 ° -40 °.

Description

Cement kiln tail burner for alternative fuel Technical Field The utility model relates to the technical field of combustors, in particular to a cement kiln tail combustor for alternative fuels. Background The cement kiln tail coal powder burner is core thermal equipment of a cement production line, and the working principle is that after coal powder and air are mixed by a conveying system, the coal powder is sprayed into a kiln at a high speed to form stable flame, so that the required heat is provided for cement clinker calcination. In the prior art, the pulverized coal is sprayed into the cement kiln for combustion through a pneumatic transmission system, but in the emission of nitrogen oxides generated by pulverized coal combustion, the thermal nitrogen oxides accounts for 60% -80%, so that the pollution control cost can be greatly improved, and the phenomenon of exceeding pollutant emission can occur, so that a combustor capable of replacing fuel is needed. Disclosure of utility model In order to solve the technical problems in the background technology, the utility model provides a cement kiln tail burner for alternative fuels. The technical scheme of the utility model is as follows: The cement kiln tail burner for the alternative fuel comprises a coal powder burner body, wherein a coal powder conveying device and a pneumatic conveying device are communicated with the coal powder burner body, a coal powder channel which is correspondingly communicated with the coal powder conveying device is arranged in the coal powder burner body, an alternative fuel channel is also arranged in the coal powder burner body, and an alternative fuel conveying device is arranged at the outer side of the coal powder burner body; The replacement fuel conveying device comprises a cylindrical fuel scattering chamber, the upper end of the fuel scattering chamber is a feeding hole, the lower end of the fuel scattering chamber is communicated with a replacement fuel channel through a conveying unit, a fuel scattering assembly is arranged in the middle of the fuel scattering chamber and comprises a conical scattering cylinder and a scattering unit which are sequentially arranged from top to bottom, the axis of the conical scattering cylinder is coaxial with the axis of the fuel scattering chamber, the diameter of the bottom of the conical scattering cylinder is larger than the diameter of the top, an annular channel for the replacement fuel to fall is formed between the lower part of the conical scattering cylinder and the inner wall of the fuel scattering chamber, and the scattering unit corresponds to the annular channel. The replacement fuel is the fuel of smashing to suitable granule, and the fuel can appear caking or caking phenomenon in storage, transportation, need in time break up, and the concrete structure of above-mentioned unit of breaking up is, breaks up the unit and includes the rotation axis and rather than the motor that is connected, and the motor setting is in the toper dispersion section of thick bamboo, and the axis of rotation axis and the axis of toper dispersion section of thick bamboo are coaxial, are provided with a plurality of bars of breaking up along its length direction on the rotation axis, and the one end that breaks up the pole and keep away from the rotation axis extends to under the annular channel. The setting position of the outer end of the scattering rod is that the vertical distance between the bottom end of the conical scattering cylinder and the inner wall of the fuel scattering chamber is 0.5-5cm greater than the vertical distance between the outer end of the scattering rod and the inner wall of the fuel scattering chamber, so that the outer rod section of the scattering rod can be used for scattering the replacement fuel falling from the conical scattering cylinder conveniently. In order to improve the scattering area of the scattering rods and the scattering efficiency of the scattering caking alternative fuel, the plurality of scattering rods are vertically connected with the rotating shaft and are distributed in a staggered manner. The conveying unit is of a structure that the conveying unit is a screw conveyor, the screw conveyor is obliquely downwards arranged, the screw conveyor is provided with a feed inlet and a discharge outlet, the feed inlet is communicated with the lower port of the fuel scattering chamber, and the discharge outlet is communicated with the replacement fuel channel. In order to pre-break up the agglomerated replacement fuel on the conical dispersing cylinder, a plurality of inclined ribs are welded on the outer conical surface of the conical dispersing cylinder along the direction of a bus of the conical dispersing cylinder, and the agglomerated replacement fuel can be contacted with the conical dispersing cylinder and the inclined ribs when the replacement fuel is put in from a feeding hole, and is pre-broken up by the inclined ribs. Further, a scattering t