CN203010590U

CN203010590U - Powder injection type combustor

Info

Publication number: CN203010590U
Application number: CN2012207452824U
Authority: CN
Inventors: 陈德根; 陈宝忠
Original assignee: XIANGXI AUTONOMOUS PREFECUTRE DEBANG MANGANESE INDUSTRY Co Ltd
Current assignee: XIANGXI AUTONOMOUS PREFECUTRE DEBANG MANGANESE INDUSTRY Co Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-06-19
Anticipated expiration: 2022-12-31

Abstract

The utility model discloses a powder injection type combustor. The powder injection type combustor comprises a spiral-flow type combustion nozzle, an oil gas atomizing chamber, a fuel atomizing chamber, a high pressure wind chamber, a preheat wind chamber and a track. The chambers are sequentially ranked from inside to outside and mutually independent. The back ends of the chambers are respectively communicated with the spiral-flow type combustion nozzle and share a longitudinal central line with the spiral-flow type combustion nozzle. A whole formed by the spiral-flow type combustion nozzle and the chambers is connected with the track through a pulley. Starting of an oil-gas mixing channel is convenient. Combustion agent and a gas mixing channel enable the injected combustion agent to be in a uniform fog mode, and safety of rapid combustion of the combustion agent is guaranteed. The high pressure wind channel can regulate length of a flame, not only heating area can be increased, but also air amount can be increased to promote complete combustion of the combustion agent. Arrangement of the preheat wind channel not only can ensure reducing roasting in a micro negative oxygen state, but also can save energy. In the using process, position control can be transformed and temperature change inside a regulating furnace can be regulated by horizontally moving the sliding wheel on the track, and technical index is guaranteed to be satisfied.

Description

The spraying type burner

Technical field

The utility model relates to a kind of spraying type burner, particularly a kind of air channel structure of spraying type burner.Mobile adjustable type multi-air channel pulverized coal burner

Background technology

Current combustion device form is a lot, and burner is take bridge type as main the earliest, mainly is used in vertical, horizontal kiln often, and along with the development of technology, this stationary furnace bridge-type develops into again the mode of tower-type rotary and horizontal chained rotation.But no matter be the early stage fixed or rotary problem that all can't resolve fuel firing rate of later stage.So used in recent years the spraying type burner, initial is exactly with the subsidiary fan blade of a beater grinder, add an oscillating feeder and form a single tube coal burner, it is simple in structure, but fault rate is high, the granularity of ignition temperature, fuel is difficult to reach the requirement of regulation, still can use the stove of oxidizing roasting and forge.To reduction roaster, it does not only reach the requirement of strict control temperature, and because the granularity of fuel is larger, the problem that incomplete combustion is arranged, after the more important thing is these coal dusts that cannot burn completely and reduzate contacting, may bring the material reduction temperature to raise, cause the phenomenon of stammerer.

The utility model content

The purpose of this utility model is to provide a kind of mobile adjustable type multiple wind duct combusting device that can solve reduction roaster incomplete combustion, stammerer problem.

This spraying type burner that the utility model provides, comprise spiral-flow type burner, oil gas spray chamber, fuel atomization chamber, high pressure air compartment, pre-hot air chamber, track described each chamber successively by interiorly arrange outward, rear end separate, each chamber is communicated in respectively described spiral-flow type burner, and is and coaxial to center line with the spiral-flow type burner; Described spiral-flow type burner is connected with described track by pulley with the integral body that each chamber forms.

The length of described oil gas spray chamber, fuel atomization chamber, high pressure air compartment, pre-hot air chamber shortens successively, and the downside front end of each chamber has respectively air intake, fuel and compressed air mixture inlet, compressed air inlet, pre-hot blast entrance.

The front end of described oil gas spray chamber is useful on the spray bar of igniting.

The axial centre of described spiral-flow type burner has the convergent taper hole that is communicated with described oil gas spray chamber; Be evenly equipped with S shape rib in the zone that corresponding described oil gas spray chamber and fuel atomization chamber surround, in the zone that corresponding described other each chamber surrounds, dislocation is evenly equipped with straight rib.

The utility model is provided with the air-fuel mixture passage in axial centre, can guarantee the igniting of stove and midway flame-out after again the resume production use of igniting, start and facilitate; Be provided with incendiary agent and gas hybrid channel in the periphery of air-fuel mixture passage, can make the fuel agent of ejection become vaporific uniformly, thereby guarantee that incendiary agent is can conflagration complete; Incendiary agent and periphery, gas hybrid channel be provided with can regulating flame length the high pressure air channel, not only can strengthen heating surface (area) (HS, and can increase the completing combustion that air capacity promotes incendiary agent.Be provided with the pre-hot-flow flue of the waste heat that utilizes kiln hood and kiln body at ragged edge one deck, can reach the reduction roasting of regulating under the little negative oxygen condition of air quantity assurance, can reach again the purpose of energy savings.Whole burner in use, control and regulate the variations in temperature in stove to shift one's position by pulley forward and backward movement in orbit, guarantee satisfying of technic index, the stammerer of internal heating type rotary kiln and the problem of ring formation have effectively been controlled, solved prior art causes stopping production because sintering temperature is high problem, also greatly reduce simultaneously kiln hood workman's labour intensity, saved fuel.

Description of drawings

Fig. 1 is the main TV structure schematic diagram of a preferred embodiment of the utility model.

Fig. 2 is that enlarged diagram is looked on the left side of Fig. 1.

The specific embodiment

As shown in the figure, this spraying type burner that the utility model provides is used for coal dust firing, comprise spiral-flow type burner 1, oil gas spray chamber 2, fuel atomization chamber 3, high pressure air compartment 4, pre-hot air chamber 5, track 6, each chamber is communicated in respectively spiral-flow type burner 1 by interior arrangement, rear end separate, each chamber outward successively, and coaxial to center line with spiral-flow type burner 1.Spiral-flow type burner 1 is connected with track 6 by suspension rod 7, pulley 8 with the integral body that each chamber forms.The length of oil gas spray chamber 2, fuel atomization chamber 3, high pressure air compartment 4, pre-hot air chamber 5 shortens successively, and the downside front end of each chamber has respectively air intake 21, fuel and compressed air mixture inlet 31, compressed air inlet 41, pre-hot blast entrance 51.The front end of oil gas spray chamber 2 is useful on the spray bar 22 of igniting.The axial centre of spiral-flow type burner 1 has the convergent taper hole 11 that is communicated with oil gas spray chamber 2; Be evenly equipped with S shape rib 12 in the zone that corresponding oil gas spray chamber 2 and fuel atomization chamber 3 surround, in the zone that corresponding other each chamber surrounds, dislocation is evenly equipped with straight rib 13.S shape rib 12 can make air-flow evenly and produce spiral, and straight rib 13 can make air-flow more even, makes fuel combustion efficiency better.

All pass into compressed air from air intake 21, fuel and compressed air mixture inlet 31, compressed air inlet 41.According to field working conditions, the intake that the staff can be by regulating each chamber and make whole burner regulate variations in temperature in stove in the slip of track to satisfy technic index, guarantees that the kiln internal combustion fully and not stammers.

Claims

1. spraying type burner, comprise the spiral-flow type burner, it is characterized in that: it also comprises oil gas spray chamber, fuel atomization chamber, high pressure air compartment, pre-hot air chamber, track, described each chamber is communicated in respectively described spiral-flow type burner by interior arrangement, rear end separate, each chamber outward successively, and coaxial to center line with the spiral-flow type burner; Described spiral-flow type burner is connected with described track by pulley with the integral body that each chamber forms.

2. spraying type burner as claimed in claim 1, it is characterized in that: the length of described oil gas spray chamber, fuel atomization chamber, high pressure air compartment, pre-hot air chamber shortens successively, and the downside front end of each chamber has respectively air intake, fuel and compressed air mixture inlet, compressed air inlet, pre-hot blast entrance.

3. spraying type burner as claimed in claim 1, it is characterized in that: the front end of described oil gas spray chamber is useful on the spray bar of igniting.

4. spraying type burner as claimed in claim 1 is characterized in that: the axial centre of described spiral-flow type burner has the convergent taper hole that is communicated with described oil gas spray chamber; Be evenly equipped with S shape rib in the zone that corresponding described oil gas spray chamber and fuel atomization chamber surround, in the zone that corresponding described other each chamber surrounds, dislocation is evenly equipped with straight rib.