CN204786421U

CN204786421U - Many fuel rotary kiln combustor

Info

Publication number: CN204786421U
Application number: CN201520446795.9U
Authority: CN
Inventors: 吴敬; 蔡长明
Original assignee: XIANGYANG ZHONGHE M&E TECHNOLOGY Co Ltd
Current assignee: XIANGYANG ZHONGHE M&E TECHNOLOGY Co Ltd
Priority date: 2015-06-26
Filing date: 2015-06-26
Publication date: 2015-11-18
Anticipated expiration: 2025-06-26

Abstract

The utility model discloses a many fuel rotary kiln combustor, pretext portion, protective layer and pipeline are constituteed, and the protective layer is that the pouring of fire -resistant casting material forms, is located the head outside, its characterized in that: the pipeline is along radially formed with the pipe spreader assembly by axial compressor wind urceolus, whirl wind urceolus, two angle swirler, gaseous fuel swirler, gaseous fuel swirler and the layering of buggy inner tube to interior from outer in proper order, and axial compressor wind urceolus constitutes annular axial compressor wind channel with whirl wind urceolus, and whirl wind urceolus constitutes the outer wind channel of cyclic annular whirl, two angle swirler and the interior wind channel of gaseous fuel swirler component whirl, gaseous fuel swirler and buggy inner tube component buggy passageway with two angle swirler. The utility model discloses use a plurality of fuel feed inlets and the equal coaxial joining of various fuel in the combustor, make the combustor reach the adaptability of pluralities of fuel. But wide application in trades such as refractory material, metallurgy, lime.

Description

Multi fuel rotary kiln burner

Technical field

The utility model belongs to coal and coal gas clean combustion Thermal Equipment technical field, is specifically related to a kind of multi fuel rotary kiln burner.

Technical background

The performance quality of burner is determined by many factors, design applicable burner structure, must require and the Structure and energy parameter of the designed combustion device targetedly such as fuel characteristic according to the kiln type feature of rotary kiln, material calcining.Usually, the fuel type that rotary kiln burner uses is single, such as can only with coal dust or natural gas, and this single fuel burner is difficult to the diversity taking into account user enterprise fuel.Some enterprises self possess the ability of commercial coke oven coal gas and blast furnace gas, if be not used, will cause the pollution of the great wasting of resources and environment.

In addition, theory and practice all proves, there is direct influence the position of geometry to velocity each in flame jet and internal reflux district of burner Whirl deposite tank outlet.Therefore reasonably burner flame outlet geometry design is the necessary requirement of burner for excellent combustibility.

Summary of the invention

The purpose of this utility model is, overcomes the problem that existing burner fuel is single, in order to improve energy utilization rate, reduce production cost, environmental protect, discloses a kind of multi fuel rotary kiln burner.

For realizing the purpose of this utility model, the technical scheme adopted is: multi fuel rotary kiln burner, by head, protective layer and pipeline composition, protective layer is the cast of refractory casting material, be positioned at head outside, it is characterized in that: pipeline is radially from outside to inside successively by axial flow wind urceolus, Whirl deposite tank urceolus, two angle cyclone, gaseous fuel cyclone, gaseous fuel cyclone and coal dust inner core layering coaxial sleeve are assembled, axial flow wind urceolus and Whirl deposite tank urceolus form the axial flow air channel of ring-type, Whirl deposite tank urceolus and two angle cyclone form ring-type eddy flow outer air duct, two angle cyclone and gaseous fuel cyclone form air channel in eddy flow, gaseous fuel cyclone and coal dust inner core form coal dust channel,

Be set with in coal dust inner core in centre wind and manage and fire rod in pipe, pyrophoric fuel gas;

The front end outer side of axial flow wind urceolus is set with flame cover;

In pipe, pyrophoric fuel gas, pipe is respectively arranged with axial flow airduct, eddy flow airduct, gaseous fuel I adapter, gaseous fuel II adapter and combustion-supporting airduct in axial flow wind urceolus, centre wind, one end of its Axial-Flow airduct, eddy flow airduct and combustion-supporting airduct runs through combustion air porch.

As improvement of the present utility model, the cylindrical shape of axial flow wind urceolus is divided into the head taper ejection section and horizontal segment of having a style of one's own, excessive by a conic tube between ejection section and horizontal segment.

As improvement of the present utility model, two angle cyclone and the axial keeping parallelism of Whirl deposite tank urceolus.

As improvement of the present utility model, the head end of gaseous fuel cyclone is taper.

As improvement of the present utility model, the head end of coal dust inner core is taper.

Advantage of the present utility model:

1, consider different ature of coal pulverized coal particle size and conveying air velocity, and the situation that coal dust mixes with two kinds of gas with various, use multiple fuel feed inlet in the burner and various fuel all coaxially adds, make burner reach the fuel tolerance of height.

2, under identical swirl strength condition, adopt and have the fuel ejiction opening of tapering to design, angle is chosen rationally, makes expanding extend mouth and the radial distribution distance of axial velocity, the mass flow of reverse backflow and recirculating zone size can be made to increase.

Accompanying drawing explanation

Fig. 1 is head construction schematic diagram of the present utility model,

Fig. 2 is overall structure schematic diagram of the present utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing and example, the utility model is described in further detail.

By reference to the accompanying drawings 1, Fig. 2 illustrates structure of the present utility model: multi fuel rotary kiln burner, by head, protective layer and pipeline composition, protective layer is the cast of refractory casting material, be positioned at head outside, it is characterized in that: pipeline is radially from outside to inside successively by axial flow wind urceolus 8, Whirl deposite tank urceolus 6, two angle cyclone 5, gaseous fuel cyclone 4, gaseous fuel cyclone 3 and coal dust inner core 2 layering coaxial sleeve are assembled, axial flow wind urceolus 8 and Whirl deposite tank urceolus 6 form the axial flow air channel of ring-type, Whirl deposite tank urceolus 6 and two angle cyclone 5 form ring-type eddy flow outer air duct, two angle cyclone 5 and gaseous fuel cyclone 4 form air channel in eddy flow, gaseous fuel cyclone 3 and coal dust inner core 2 form coal dust channel,

Pipe 10 and fire rod 11 in pipe 9 in centre wind, pyrophoric fuel gas is set with in coal dust inner core 2;

The front end outer side of axial flow wind urceolus 8 is set with flame cover 7;

Pipe 10 is respectively arranged with axial flow airduct 41, eddy flow airduct 38, gaseous fuel I adapter 26, gaseous fuel II adapter 28 and combustion-supporting airduct 36 in pipe 9, pyrophoric fuel gas in axial flow wind urceolus 8, centre wind, one end of its Axial-Flow airduct 41, eddy flow airduct 38 and combustion-supporting airduct 36 runs through combustion air porch.

The angle of the utility model each air channel forecone is the key of the utility model structural design, and when First air is certain, the size of fuel ejiction opening tapering parameter directly affects the momentum range of burner, has direct relation with jet velocity.Adopt the burner of the utility model structure, fuel combustion speed is increased substantially, eliminate imperfect combustion to greatest extent, regular, the active strong temperature of its flame profile is high, kiln temperature distribution is rationally, stable in thermal collecting, decreases unnecessary heat loss, long service life, is conducive to reducing hear rate and utilizes the used in combination of low, inferior fuel and coal dust and gas with various fuel.

The application range of products of the utility model structure is wide, can be used for the rotary kiln of calcination active lime, the various kiln type of metallurgical briquetting, is also applicable to wet method drying kiln, kiln tail dore furnace etc.Be widely used in the industries such as refractory material, metallurgy, lime.

Claims

1. multi fuel rotary kiln burner, by head, protective layer and pipeline composition, protective layer is the cast of refractory casting material, be positioned at head outside, it is characterized in that: pipeline is radially from outside to inside successively by axial flow wind urceolus, Whirl deposite tank urceolus, two angle cyclone, gaseous fuel cyclone, gaseous fuel cyclone and coal dust inner core layering coaxial sleeve are assembled, axial flow wind urceolus and Whirl deposite tank urceolus form the axial flow air channel of ring-type, Whirl deposite tank urceolus and two angle cyclone form ring-type eddy flow outer air duct, two angle cyclone and gaseous fuel cyclone form air channel in eddy flow, gaseous fuel cyclone and coal dust inner core form coal dust channel, be set with in coal dust inner core in centre wind and manage and fire rod in pipe, pyrophoric fuel gas, the front end outer side of axial flow wind urceolus is set with flame cover, in pipe, pyrophoric fuel gas, pipe is respectively arranged with axial flow airduct, eddy flow airduct, gaseous fuel I adapter, gaseous fuel II adapter and combustion-supporting airduct in axial flow wind urceolus, centre wind, one end of its Axial-Flow airduct, eddy flow airduct and combustion-supporting airduct runs through combustion air porch.

2. multi fuel rotary kiln burner according to claim 1, is characterized in that: the cylindrical shape of axial flow wind urceolus is divided into the head taper ejection section and horizontal segment of having a style of one's own, excessive by a conic tube between ejection section and horizontal segment.

3. multi fuel rotary kiln burner according to claim 1, is characterized in that: two angle cyclone and the axial keeping parallelism of Whirl deposite tank urceolus.

4. multi fuel rotary kiln burner according to claim 1, is characterized in that: the head end of gaseous fuel cyclone is taper.

5. multi fuel rotary kiln burner according to claim 1, is characterized in that: the head end of coal dust inner core is taper.