CN202328196U

CN202328196U - Improved fluidized bed furnace

Info

Publication number: CN202328196U
Application number: CN2011204388272U
Authority: CN
Inventors: 高建国; 周继明; 张银华
Original assignee: GUANG'AN BNBM CO Ltd
Current assignee: GUANG'AN BNBM CO Ltd
Priority date: 2011-11-09
Filing date: 2011-11-09
Publication date: 2012-07-11
Anticipated expiration: 2021-11-09

Abstract

The utility model discloses an improved fluidized bed furnace which comprises a furnace body, a cloth air bellow, an air cap, a material feeding pipe, a heat conduction pipe, a heat return pipe, a slag discharging pipe, a collection box and a cooling pipe, wherein a furnace hearth is arranged at the lower end of the furnace body; the air cap penetrates through the furnace hearth, and is communicated with the cloth air bellow; the cloth air bellow is connected with a fan; the material feeding pipe is arranged on the lower part of one side of the furnace body; the heat conduction pipe is arranged on the upper part of one side of the furnace body, positioned on the same side as the material feeding pipe and communicated with the material feeding pipe through a pipeline; the heat return pipe is arranged on the lower part of the furnace body; the slag discharging pipe is arranged on the lower part of the furnace body and connected with the collection box; the cooling piece is arranged on the outer side of the slag discharging pipe; and a cooling channel is formed between the slag discharging pipe and the cooling pipe. A certain angle is formed between each of the material feeding pipe, the heat conduction pipe and the slag discharging pipe of the improved fluidized bed furnace, so that fuels can be fed conveniently, and slag can be discharged conveniently; furthermore, dust in the heat conduction pipe returns into the furnace body along the pipeline so as to be reused; and therefore, smoothness of a flue is guaranteed, the utilization rate of coals is increased, and pollution to the environment is reduced.

Description

Improve fluidized bed furnace

Technical field

The utility model belongs to the combustion apparatus technical field, relates to a kind of fluidized bed furnace, relates in particular to a kind of improvement fluidized bed furnace.

Background technology

Amount of stored heat is very big in the burner hearth of fluidized bed furnace, between the particle and between particle and the air relative motion very fierce, gas diffusion velocity is fast, can be under very low air excess system active combustion, and, needn't preheating, be swift in response, coal charge can completing combustion.Fluidized bed furnace mainly is to be that raw material adds boiling-house with the following particulate coal of 10mm, and the high pressure draught that produces at high pressure positive blower forms similar fluidized state down, and coal-fired under fluidized state, the burning provides thermal source for the equipment of being heated.Owing to have a large amount of dust in the thermal current, easy blocking flue not only, influence runs well, and not clean-burning dust is pulled away, and has reduced the utilization rate of coal; Simultaneously also environment is caused severe contamination.

The utility model content

The purpose of the utility model is the deficiency to above-mentioned prior art, and a kind of improvement fluidized bed furnace is provided, and not only can solve the problem that dust stops up flue, can also improve the utilization rate of coal, reduces pollution on the environment.

For achieving the above object, the technical scheme that the utility model is taked is: a kind of improvement fluidized bed furnace is provided, comprises body of heater, cloth bellows, blast cap, feed pipe; Said body of heater inside is burner hearth; Said body of heater lower end is a siege; Said blast cap passes siege and is communicated with the cloth bellows; Said cloth bellows are connected with blower fan; Said feed pipe is arranged on a side lower part of body of heater; It is characterized in that: said improvement fluidized bed furnace also comprises heat pipe, product heat cal rod, scum pipe, collecting box, cooling tube; Said heat pipe is arranged on body of heater one upper lateral part, and with the feed pipe homonymy, and heat pipe is communicated with feed pipe through pipeline; Said product heat cal rod is arranged on the body of heater bottom; Said scum pipe is arranged on the body of heater bottom and is connected with collecting box, and scum pipe is positioned at the below of product heat cal rod; Said scum pipe arranged outside has cooling tube, and forms the cooling duct between scum pipe and the cooling tube.

Angle between said feed pipe axis and the body of heater axis is 10 ° ~ 70 °.Said heat pipe is the L type, and the base is a horn structure, and the angle between base axis and the body of heater axis is 30 ° ~ 80 °.Angle between said scum pipe axis and the body of heater axis is 120 ° ~ 150 °.

All be certain angle owing to improve feed pipe, heat pipe, the scum pipe of fluidized bed furnace, not only help the discharge with slag charge that enters of fuel, and the dust in the passage is got back in the body of heater along pipeline and further is used with body of heater; Like this, not only keep the unobstructed of flue, also improved the utilization rate of coal; Reduced pollution to environment.

Description of drawings

Fig. 1 is for improving the structural representation of fluidized bed furnace.

Wherein, 1, body of heater; 2, burner hearth; 3, siege; 4, cloth bellows; 5, blast cap; 6, blower fan; 7, feed pipe; 8, heat pipe; 9, product heat cal rod; 10, scum pipe; 11, collecting box; 12, cooling tube.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the utility model is done detailed description.

As shown in Figure 1, this improvement fluidized bed furnace comprises body of heater 1, cloth bellows 4, blast cap 5, feed pipe 7, heat pipe 8, product heat cal rod 9, scum pipe 10, collecting box 11, cooling tube 12; Body of heater 1 inside is burner hearth 2; Body of heater 1 lower end is a siege 3; Blast cap 5 passes siege 3 and is communicated with cloth bellows 4; Cloth bellows 4 are connected with blower fan 6; Feed pipe 7 is arranged on a side lower part of body of heater 1; Heat pipe 8 is arranged on body of heater 1 one upper lateral parts, and with feed pipe 7 homonymies, and heat pipe 8 is communicated with feed pipe 7 through pipeline; Product heat cal rod 9 is arranged on body of heater 1 bottom; Scum pipe 10 is arranged on body of heater 1 bottom and is connected with collecting box 11, and scum pipe 10 is positioned at the below of product heat cal rod 9; Scum pipe 10 arranged outside have cooling tube 12, and form the cooling duct between scum pipe 10 and the cooling tube 12.

Preferred implementation is: the angle between feed pipe 7 axis and body of heater 1 axis is 10 ° ~ 70 °.Heat pipe 8 is the L type, and the base is a horn structure, and the angle between base axis and body of heater 1 axis is 30 ° ~ 80 °.Angle between scum pipe 10 axis and body of heater 1 axis is 120 ° ~ 150 °.

During use, particulate coal gets into burner hearth 2 from feed pipe 7, burning on siege 3, and under the wind action that gets into burner hearth 2 by blast cap 5, be in fluidized state; The high-temperature flue gas that produces leads to the equipment that is heated by heat pipe 8; Owing to have a large amount of dust in the flue gas, behind the entering heat pipe 8, velocity of flue gas slows down, and dust wherein gets into feed pipe 7 along pipeline, and rekindles with new particulate coal entering burner hearth 2, and heat pipe 8 gets italic formula structure, helps the landing of dust; The product heat cal rod 9 not heat of complete utilization is led back fluidized bed furnace, can be used for the preheating particulate coal, the saving heat; The slag charge that burning produces gets into collecting box 11 by scum pipe 10; Because scum pipe 10 outsides are provided with cooling tube 12, under cooling effect, scum pipe 10 internal pressures reduce, and under the effect of burner hearth inner high voltage, help the discharge of slag charge; The slag charge that collecting box 11 is collected can be used as the raw material of second use.

It is to be noted that the above only is the preferred implementation of the utility model; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle; Be easy to the utility model is carried out some improvement and modification, these improvement and modification also fall in the protection domain of the utility model claim.

Claims

1. an improvement fluidized bed furnace comprises body of heater (1), cloth bellows (4), blast cap (5), feed pipe (7); Said body of heater (1) inside is burner hearth (2); Said body of heater (1) lower end is siege (3); Said blast cap (5) passes siege (3) and is communicated with cloth bellows (4); Said cloth bellows (4) are connected with blower fan (6); Said feed pipe (7) is arranged on a side lower part of body of heater (1); It is characterized in that: said improvement fluidized bed furnace also comprises heat pipe (8), product heat cal rod (9), scum pipe (10), collecting box (11), cooling tube (12); Said heat pipe (8) is arranged on body of heater (1) one upper lateral part, and with feed pipe (7) homonymy, and heat pipe (8) is communicated with feed pipe (7) through pipeline; Said product heat cal rod (9) is arranged on body of heater (1) bottom; Said scum pipe (10) is arranged on body of heater (1) bottom and is connected with collecting box (11), and scum pipe (10) is positioned at the below of product heat cal rod (9); Said scum pipe (10) arranged outside has cooling tube (12), and forms the cooling duct between scum pipe (10) and the cooling tube (12).

2. according to the described improvement fluidized bed furnace of claim 1, it is characterized in that: the angle between said feed pipe (7) axis and body of heater (1) axis is 10 ° ~ 70 °.

3. according to the described improvement fluidized bed furnace of claim 2, it is characterized in that: said heat pipe (8) is the L type, and the base is a horn structure, and the angle between base axis and body of heater (1) axis is 30 ° ~ 80 °.

4. according to the described improvement fluidized bed furnace of claim 3, it is characterized in that: the angle between said scum pipe (10) axis and body of heater (1) axis is 120 ° ~ 150 °.