CN201626917U

CN201626917U - Combustion beam for lime kiln

Info

Publication number: CN201626917U
Application number: CN2010200461471U
Authority: CN
Inventors: 杨霞
Original assignee: 杨霞
Current assignee: Hebei Hengrui Chemical Equipment Technology Co. Ltd.
Priority date: 2010-01-19
Filing date: 2010-01-19
Publication date: 2010-11-10
Anticipated expiration: 2020-01-19

Abstract

The utility model discloses a combustion beam for a lime kiln. A fuel pipeline, a combustion-supporting air pipeline and a coolant layer are disposed inside a beam body, outlets of the fuel pipeline and the combustion-supporting air pipeline are connected onto a burner on the side wall or at the bottom of the beam body, except the burner, the whole outer surface of the beam body is provided with a wear-resistant insulating layer, and the cross section of the beam body of the combustion beam is in an inverted trapezoidal shape with a wide top and a narrow bottom. The design not only can effectively prevent influence of external high temperature, but also can reduce collision to the side wall of the beam body by raw materials in descending process, thereby further achieving the effect of prolonging service life of the combustion beam.

Description

The burning beam that a kind of limestone kiln is used

Technical field

The utility model relates to the burning beam that a kind of limestone kiln is used.

Background technology

During with the beam-type limekiln calcined limestone, raw materials such as Wingdale are added installing in the limestone kiln from the top, raw material is from top to down through preheating district, calcining zone, cooling zone, then from the products export output.Be provided with burning beam in the calcining zone, burning beam is the nucleus equipment of beam-type limekiln, and its cross section is generally the cavity structure of rectangle or T type, is loaded with combustion agent and heat-eliminating medium in the cavity.The beam body of burning beam is provided with burner, fuel conduit and combustion air pipeline, fuel conduit and combustion-aid air pipe road direction burner fuel supplying and combustion air, and burner uniform distribution fuel also burns.

In order to prevent burning beam, in burning beam, also be provided with the interior media cooling line usually because of high temperature oxidation.Under hot conditions, though burning beam has interior media circulation cooling, the burning beam surface is still oxidized easily, ablate, and causes dielectric leakage and loses efficacy.And in the filler process, the raw material major part is a bulk in irregular shape, must produce very big washing away to the sidewall of burning beam when raw material falls, wearing and tearing will inevitably cause the damage of burning beam sidewall for a long time, thereby cause the leakage of heat-eliminating medium even combustion agent.Be generally at present two-layerly at the burning beam of calcining zone, the calcining zone height is spent low, if by the operation of ordinary production speed, Wingdale decomposes fully and just leaves calcining zone, promptly can occur giving birth to burning phenomenon; Burn if will avoid giving birth to, have to reduce travelling speed and be forced to the underproduction.Some owner is in order to reach product, and raising kiln travelling speed is had to strengthen combustion gas and air feed rate again simultaneously, thereby caused heat distribution inhomogeneous, and burning appears near the lime the burner, and lime at a distance still has part to give birth to burning.

The utility model content

The utility model technical issues that need to address provide a kind of burning beam that can protect the not frayed limestone kiln of outside surface to use.

For solving the problems of the technologies described above, technical solution adopted in the utility model is:

The burning beam that a kind of limestone kiln is used, be provided with fuel conduit, combustion air pipeline and heat-eliminating medium layer in the burning beam beam body, the fuel conduit outlet is connected the burner that is arranged on beam body sidewall or bottom with the meet of combustion tube way outlet, the entire exterior surface of described beam body is removed the burner place, is provided with one deck heat resistant and wear resistant thermofin.

Improvement of the present utility model is: the cross section of described burning beam beam body is wide at the top and narrow at the bottom trapezoidal.

Further improvement of the utility model also is: burning beam is a T type beam, and described T type beam comprises crossbeam and beam body, and the termination, both sides of crossbeam is the cross section of fillet, beam body for trapezoidal.

Further improvement of the utility model also is: T type beam is provided with two next row of row, three row's burners.

Owing to adopted technique scheme, the obtained technical progress of the utility model is:

Outside surface of the present utility model is removed the heat resistant and wear resistant thermofin advantage that the burner place all is provided with and is: (1) is because the thermofin thermal conductivity is very little, the internal-external temperature difference of thermofin is bigger, the burning beam surface temperature is lower, and the heat that passes to the burning beam cooling oil is less, and the energy consumption of kiln is reduced.Raw material directly washed away Liang Bi when (2) wear-resisting thermofin can also prevent to add the dress raw material in the limestone kiln.The cross section of burning beam is set to down ladder beam or two ends are the T of falling trapezoid type beam for the fillet bottom, all can effectively prevent in the descending process of raw material collision to the beam body sidewall, and the termination, both sides of T type beam is set to fillet also can make burner place, both sides be heated evenly, and then reaches the raising burning beam effect in work-ing life.

T type beam is provided with two next row of row, and three row's burners, burner are evenly distributed the lime quality is improved, and energy consumption descends.The efficiency of combustion height increases output.

Description of drawings

Fig. 1 is down the cross section view of trapezoidal burning beam;

Fig. 2 is the cross section view of T type burning beam.

Wherein: 1. beam body, 2. fuel conduit, 3. combustion air pipeline, 4. burner, 5. heat-eliminating medium layer, 6. wear resistant heat preserving layer, 7. crossbeam, 71. terminations, 72. fillets.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further details:

Embodiment 1

Fig. 1 is the burning beam that a kind of cross section is used for the limestone kiln of falling the trapezoid.Mainly comprise the fuel conduit 2, combustion air pipeline 3 and the heat-eliminating medium layer 5 that are successively set on from the inside to surface in the beam body 1, fuel conduit 2 is connected burner 4 with the outlet of combustion-supporting pipeline 3, burner is positioned at down the bottom of ladder beam, the entire exterior surface of beam body is removed the burner place, is provided with one deck heat resistant and wear resistant thermofin 6.

Embodiment 2

Fig. 2 is that a kind of cross section is the burning beam that the limestone kiln of T type is used, T type beam mainly comprises crossbeam 7 and beam body 1, there is outstanding termination 71 both sides of crossbeam, be disposed with fuel conduit 2, combustion air pipeline 3 and heat-eliminating medium layer 5 in the beam body 1 from the inside to surface, fuel conduit 2 and the outlet tie-beam body sidewall of combustion-supporting pipeline 3 and the burner 4 of bottom; Each angle of termination 7 is a fillet 72, and the entire exterior surface of beam body is removed the burner place, is provided with one deck heat resistant and wear resistant thermofin 6.Can effectively avoid raw material in descending process directly to the washing away of beam body sidewall and termination, protected the outer wall of beam body well.

Burning beam described in the utility model is used in the calcining zone in limestone kiln, can be set to two-layer, three layers or four layers.When being set to three layers or four layers, adjust the ratio of combustion air and fuel simultaneously, make the burning of burner even, can guarantee that not only the limestone kiln is to reach the operation of product speed, can also be that raw material is decomposed fully, give birth to and burn and the reduction of burning rate, thereby the quality of assurance product further improves the utilization ratio and the working efficiency in limestone kiln.Owing to adopt on the beam and adopt thermofin, use three row's burner beam burnings more even, can effectively reduce energy consumption.

Claims

1. burning beam that the limestone kiln is used, be provided with fuel conduit (2), combustion air pipeline (3) and heat-eliminating medium layer (5) in the beam body (1), the outlet meet of the outlet of fuel conduit and combustion-supporting pipeline is connected with burner (4), it is characterized in that: the entire exterior surface of described beam body is removed the burner place, is provided with one deck heat resistant and wear resistant thermofin (6).

2. the burning beam that a kind of limestone kiln according to claim 1 is used is characterized in that: the cross section of described beam body (1) is wide at the top and narrow at the bottom trapezoidal.

3. the burning beam that a kind of limestone kiln according to claim 2 is used is characterized in that: described burning beam is a T type beam, and described T type beam is made up of crossbeam (7) and beam body (1), and the termination, both sides (71) of crossbeam is fillet (72).

4. the burning beam that a kind of limestone kiln according to claim 3 is used is characterized in that: described burner is distributed as three row's burners of two rows, next row.