CN201373398Y

CN201373398Y - A Multi-row Nozzle Interleaved Hybrid Ceramic Burner

Info

Publication number: CN201373398Y
Application number: CN200920088942U
Authority: CN
Inventors: 刘世聚
Original assignee: CISDI Engineering Co Ltd
Current assignee: CISDI Engineering Co Ltd
Priority date: 2009-03-19
Filing date: 2009-03-19
Publication date: 2009-12-30
Anticipated expiration: 2019-03-19

Abstract

The utility model relates to a multi-row nozzle interlaced mixed ceramic burner, which can effectively solve the problems of poor mixing of gas and air, incomplete combustion or instability, and its structure is that two rows of gas nozzles and two rows of air nozzles are arranged alternately , from top to bottom are gas nozzles-air nozzles-gas nozzles-air nozzles; multiple gas nozzles communicate with the gas ring through multiple gas nozzle pipes; multiple air nozzles connect with the air ring through multiple air nozzle pipes The air nozzle pipe and the gas nozzle pipe are distributed in the burner body wall in a spiral shape. The outlet direction of the air nozzle is inclined upward from the horizontal direction, and the outlet direction of the gas nozzle is horizontal or inclined downward, spraying into the combustion chamber. The utility model effectively solves the problems of poor mixing of gas and air, incomplete or unstable combustion, energy saving and environmental protection, and its application has huge economic and social benefits.

Description

A kind of mixed ceramic combustor with multi-row of alternated nozzles

One, technical field

The utility model relates to a kind of mixed ceramic combustor with multi-row of alternated nozzles of using on the blast funnace hot blast stove.

Two, background technology

Burner (perhaps burner) is the indispensable core apparatus of combustion furnace kiln plant, and whether good its performance and structure be directly has influence on fuel availability, the thermal efficiency of stove and whether satisfy energy conservation and environment protection.Finished from sleeve type burner for the burner that adopts diffusion combustion mode, progressively carry out the transition to the conversion of the rectangle burner of comb shape air nozzle, and develop into that the annular steady flame combustion technology of multiple nozzle spraying eddy flow mixing backflow preheat or annular multiinjector are staggered goes up the steady flame overheavy firing of air-flow turn-back pre-heating technology after the spray premixed combustion.Along with the development of combustion technology, the combustion intensity of low-heat value gas and the stability of flame are all greatly improved, coal gas and air preheat make that ignition temperature constantly increases, efficiency of combustion also progressively improves in the cooperation.But make a general survey of existing gas burner, especially use the burner of the blast furnace gas on hot-blast stove, owing to structure unreasonable causes coal gas to mix not good with air and/or the air-flow skewness usually is an occurrence, problems such as incomplete combustion that causes therefrom or combustion instability, heat load adjustment poor performance.Such hot-blast stove obviously can not satisfy blast furnace to the air quantity of hot blast and the requirement of wind-warm syndrome, let alone efficient, the energy-conservation and environmental protection of hot-blast stove, does not also accomplish the operation with security and stability under the high hot blast temperature.Therefore, improve the structure of burner, make the burning of its efficient stable just become the effective way that improves the hot-blast stove performance.

Three, utility model content

At above-mentioned situation, for overcoming the prior art defective, the purpose of the utility model just provides a kind of mixed ceramic combustor with multi-row of alternated nozzles, coal gas be can effectively solve and not good, incomplete combustion or problem of unstable mixed with air, the technical scheme of its solution is, comprises coal gas circuit, air circuit and the two row's jet for gas in the burner body wall and is communicated with jet for gas pipeline, the two emptying gas jets of coal gas circuit and jet for gas and is communicated with the air nozzle pipeline of air circuit and air nozzle; Interlaced arrangement between said two row's jet for gas and two emptying gas jets row is followed successively by jet for gas-air nozzle-jet for gas-air nozzle from top to bottom; A plurality of jet for gas are communicated with the coal gas circuit by a plurality of jet for gas pipelines respectively; A plurality of air nozzles are communicated with the air circuit by a plurality of air nozzle pipelines respectively; Air nozzle pipeline and jet for gas pipeline shape in the shape of a spiral are distributed in the burner body wall, the Way out of air nozzle is from the horizontal by being tilted to, the Way out of jet for gas is level or is tilted to down, spray in the combustion chamber, the utility model efficiently solves coal gas and mixes not good, incomplete combustion or problem of unstable with air, energy-saving and environmental protection, its application has huge economic and social benefit.

Four, description of drawings

Fig. 1 is a structural profile front view of the present utility model.

Fig. 2 is the sectional top view of Fig. 1.

Fig. 3 is the sectional front view of another embodiment of the present utility model.

Fig. 4 is the sectional top view of Fig. 3.

Five, the specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.

Provide by Fig. 1,2, the utility model structure is, be to constitute by burner body and the intraparietal coal gas circuit of device thereof, air circuit, two row's jet for gas and the air nozzle pipeline that is communicated with jet for gas pipeline, the two emptying gas jets of coal gas circuit and jet for gas and is communicated with air circuit and air nozzle, said jet for gas and air nozzle respectively have two rows, jet for gas and air nozzle are staggered up and down, promptly are followed successively by jet for gas-air nozzle-jet for gas-air nozzle from top to bottom; Jet for gas 7-1 is communicated with coal gas circuit 1 by jet for gas pipeline 4, air nozzle 8-1 is communicated with air circuit 2 by air nozzle pipeline 6, jet for gas 7-2 is communicated with coal gas circuit 1 by jet for gas pipeline 3, and air nozzle 8-2 is communicated with air circuit 2 by air nozzle pipeline 5; Air nozzle pipeline and jet for gas pipeline shape in the shape of a spiral are distributed in the burner body wall, air nozzle 8-1 and the jet for gas 7-1 staggered mixing in ejection back from nozzle respectively, air nozzle 8-2 and jet for gas 7-2 are respectively from staggered mixing of nozzle ejection back, and then enter the combustion chamber 9 that is connected with burner, Pen Chu air meets in the combustion chamber and mixes under the effect of eddy flow with level or the oblique coal gas of ejection down obliquely, upwards owing to the restriction in space is turned back, because coal gas and air port are staggered up and down, and coal gas and air are arranged alternate layout, make mixing more even.

It is to be noted that coal gas and air nozzle can all radially have a certain degree with the combustion chamber, also can have only one radially to have a certain degree with the combustion chamber, decide with needs.

It should be appreciated that, Fig. 3, Fig. 4 and Fig. 1, the utility model burner shown in Figure 2, its difference only is on jet for gas pipeline 4 and the jet for gas 7-1 ways of connecting different, jet for gas pipeline 4 is connected for level with connected mode one row of jet for gas 7-1 among Fig. 1, another row is oblique connection, and jet for gas 7-1 is oblique the connection with jet for gas pipeline 4 among Fig. 3, there is no substantive difference.

Said air nozzle 8-1, jet for gas 7-1 at least respectively have two to arrange the arrangement that intermeshes, and constitute mixed ceramic combustor with multi-row of alternated nozzles, in case of necessity, also can increase to the above many rows of each two row, are staggered.

By said structure as can be seen, the utility model adopts the interlaced and even mixing of the multiply thread of ejection, sufficient combustion, can select lower excess air coefficient for use, improve ignition temperature more than 200 ℃, energy-conservation more than 30%, gas-fired is complete, no pollution caused by coal dust has significantly reduced the combustion furnace pollution on the environment, has huge economic and social benefit.

Claims

1. A ceramic burner with multiple rows of nozzles interlaced with each other, consisting of a burner body and a gas ring in the body wall, an air ring, two rows of gas nozzles, and a gas nozzle pipeline connecting the gas ring and the gas nozzles, Two rows of air nozzles and an air nozzle pipeline connecting the air ring and the air nozzle are formed, and it is characterized in that the gas nozzles and the air nozzles each have two rows, the gas nozzles and the air nozzles are arranged alternately up and down, and the gas nozzles (7-1 ) communicates with the gas ring (1) through the gas nozzle pipe (4), the air nozzle (8-1) communicates with the air ring (2) through the air nozzle pipe (6), and the gas nozzle (7-2) passes through the gas nozzle The pipe (3) is connected with the gas ring (1), and the air nozzle (8-2) is connected with the air ring (2) through the air nozzle pipe (5); the air nozzle pipe and the gas nozzle pipe are spirally distributed on the burner In the body wall, the air nozzle (8-1) and the gas nozzle (7-1) are ejected from the nozzle respectively and interlaced mixed, and the air nozzle (8-2) and the gas nozzle (7-2) are respectively ejected from the nozzle Interleaved mixing before entering the combustion chamber (9) connected to the burner.

2. The multi-row nozzle interleaved ceramic burner according to claim 1, characterized in that the connection between the gas nozzle pipe and the gas nozzle is horizontal connection or oblique connection.

3. The multi-row nozzle interlaced hybrid ceramic burner according to claim 1, characterized in that at least two rows of air nozzles and gas nozzles are arranged alternately with each other, or more than two rows each, Arranged in a staggered manner, multiple rows of nozzles are interleaved to form a mixed ceramic burner.