CN201429083Y

CN201429083Y - High-temperature vaporization burner with water and pulverized coal as fuel

Info

Publication number: CN201429083Y
Application number: CN200920033412XU
Authority: CN
Inventors: 温社弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-05
Filing date: 2009-06-05
Publication date: 2010-03-24
Anticipated expiration: 2019-06-05

Abstract

The utility model discloses a high-temperature vaporization burner with water and pulverized coal as fuel, which is characterized in that the inside of the burner is provided with a conical diverter (6), the inner conical surface of the diverter is provided with a steam heater (4) which is matched with the shape of the inner conical surface and comprises a sandwich, the sandwich cavity of the steam heater is communicated with a steam pipe (11), the inner opening of a pulverized coal inlet (10) is connected with a curved cyclone plate (16), an annular air channel (14) on the inner wall of the burner is adjacent to the position of the curved cyclone plate (16) with the maximum diameter, the inner opening of the pulverized coal inlet (10) is aligned with the conical tip of the diverter (6), and the inner opening of the pulverized coal inlet (10) and the diverter (6) form a primary combustion chamber (7). With the novel design, the air flowing into the burner can generate the rotating airflow through the cyclone plate. Under the common effect of the diverter and the steam heater, the steam can be vaporized at the high temperature, and both the hydrogen and the oxygen are in the combustion, thereby increasing the flame temperature and improving the thermal efficiency and the burn-out ratio.

Description

With water, coal dust is the high-temperature evaporation burner of fuel

Technical field

The utility model relate to use in a kind of Industrial Stoves and be with water, coal dust high-temperature evaporation burner as fuel.

Background technology

Industrial Stoves are mainly used in fields such as power plant's generating, factory power, constructure heating and life heat supply.Only be example with the boiler, the whole nation with about 500,000 of Industrial Boiler recoverable amount, wherein coal-burning boiler accounts for 480,000, average size 3.4 is steamed ton, 20 steam the following miniature boilers of ton surpasses 80%.These boilers are to adopt traditional raw coal grate firing mode substantially, and it is big that ubiquity coal consumption, and the thermal efficiency is low, and the burn-off rate of coal is low, the also very serious deficiency that waits of the environmental pollution that causes.Recently owing to there is not good burner supporting with it, the thermal efficiency and burn-off rate all do not reach design objective in the coal dust spray combustion technology of promoting, and coal saving rate is also low, so caused this technology can not extensive use yet.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of effect of coal saving obvious exactly for overcoming the deficiencies in the prior art, the burn-off rate height, and thermal efficiency height, what pollutant emission met national standard is the high-temperature evaporation burner of fuel with water, coal dust.

Technical solution of the present utility model is:

Be provided with a conical current divider in burner, the current divider inner conical surface is provided with and matches with the inner conical surface shape and be the steam heater of interlayer, and the interlayer inner chamber of this steam heater is communicated with steam pipe again; The internal orifice of coal dust import is connected with the curved surface cyclone plate, and the maximum gauge place of the annular passage of burner inner wall and cyclone plate is adjacent, and the internal orifice of coal dust import is aimed at the awl point of current divider, fires the chamber at the beginning of forming one between the internal orifice of coal dust import and the current divider.

Further technical solution of the present utility model is:

Form an air inlet between the minimum diameter place of said cyclone plate and the internal orifice of coal dust import, form the secondary air mouth between the maximum gauge place of cyclone plate and the annular passage.

Said burner inner wall is with refractory material, and outer wall is surrounded by water jacket.

Said steam pipe is communicated with steam-water separator.

All having steam on the inner conical surface of said steam heater and the circular shrouding portals.

Form a high temperature combustors between said current divider and the flame export, the internal diameter of this high temperature combustors and first combustion chamber is greater than the internal diameter of flame export.

Also has refractory material on the inwall of said air channel.

Also be connected with the air inlet that links to each other with blower fan on the outer wall of said burner.

The positive role that the utility model produced is:

Because the new design of this structure, the air that enters burner produces swirling eddy by cyclone plate, adds the acting in conjunction of current divider and steam heater, make the steam high-temperature evaporation, hydrogen wherein and the burning of oxygen fellowship so can increase flame temperature, improve the thermal efficiency and burn-off rate.

This burner both can be installed in newly-built raw coal boiler, Industrial Stoves, gas fired-boiler, oil burning boiler, heating furnace, forge furnace and cement kiln, lime kiln etc., also can transform these old kilns.Compare coal saving rate with the run of mine coal seam combustion technology and can reach 30%,, can make boiler thermal output improve more than 26% simultaneously for the user saves substantial contribution; and burn-off rate height; pollutant emission index meets the GB13271 regulation, has reduced gross contamination emission from the source, and environmental protection is significant.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model mainly is to be centered around the air channel 14 of burner inner wall, just to be fired chamber 7 and high temperature combustors 3 constitutes by the steam pipe 11 of the curved cyclone plate of a

coal dust import

10,16, conical diverter 6, conical steam heater that matches with current divider 6 internal conical surface shapes 4, a delivering vapor in steam heater 4 interlayers, one.Wherein, coal dust import 10 that is connected with the coal dust conveying device and flame-observing hole 9 and igniter are arranged on the afterbody of burner, the minimum diameter place of the cyclone plate 16 of an annular surface shape is adjacent with the internal orifice place of coal dust import 10 and form an air inlet 17 of a ring-type, and the maximum gauge place of cyclone plate 16 be centered around the air channel 14 of burner inner wall and be attached to the refractory material 18 of air channel 14 inwalls adjacent, form an annular secondary air mouth 15 too.An air inlet that communicates with blower fan 8 is arranged on the outer wall of burner, and the air of being sent into by air inlet 8 enters combustion chamber 7 just through air inlet 17, secondary air mouth 15 and an air channel 14.Center in the burner is provided with a conical diverter 6 of being made by refractory material, and the inner chamber of this current divider 6 also is conical.In the inner chamber of current divider 6, settled a steam heater 4 that matches with this cavity shape again, steam heater 4 is a sandwich, its interlayer communicates with the steam pipe 11 of a delivering vapor, all oblique steam (vapor) outlet 13 that is provided with on the taper seat of steam heater 4 and shrouding.Steam pipe 11 passes to outside the burner and with a steam-water separator 19 and is connected, and outer with the being enclosed in burner again cooling jacket 5 of the another side of this steam-water separator 19 communicates.

In burner, the internal orifice of coal dust import 10 is over against the awl point of current divider 6, form one between the two at the beginning of combustion chamber 7, the periphery that just fires chamber 7 has air channel 14 and is attached to the refractory material 18 of air channel 14 inwalls; And high temperature combustors 3 of formation between current divider 6 and steam heater 4 and the flame export foremost 2.Inwall at water jacket 5 has refractory material 1 equally.

The course of work of this burner: earlier will just fire ignited fuel in the chamber 7 by igniter 12, by the time the equipment that blows coal dust by high pressure during set point of temperature is sent into coal dust by coal dust import 10 and at once in first combustion chamber 7 internal combustion, the eddy flow that forms through air inlet 17, secondary air mouth 15 and an air channel 14 of the air that is entered by blast pipe 8 blows flame forward simultaneously.Can pressure be strengthened to the excircle diffusion after flame runs into current divider 6, flow velocity be accelerated.Because steam-water separator 19 is sent into steam heater 4 with steam through steam pipe 11, steam in it is heated the back from steam 13 ejections of portalling, and steam hydrogen and the burning of oxygen fellowship behind gasification reaction, make burning more abundant, both improved calorific value, can make the abundant after-flame of coal dust again,, and then enter the hot equipment of using through flame export 2 ejection so flame is high especially in the temperature of high temperature combustors 3.

The water jacket 5 that is enclosed in the outside can cool off this burner, can produce steam again and carries to steam heater 4 by steam-water separator 19 and steam pipe 11, plays the effect that kills two birds with one stone.

Claims

1, a kind of is the high-temperature evaporation burner of fuel with water, coal dust, comprise an igniter (12), it is characterized in that in burner, being provided with a conical current divider (6), current divider (6) inner conical surface is provided with and matches with the internal conical surface shape and be the steam heater of interlayer (4), and the interlayer inner chamber of this steam heater (4) is communicated with steam pipe (11) again; The internal orifice of coal dust import (10) is connected with curved surface cyclone plate (16), the annular passage of burner inner wall (14) is adjacent with the maximum gauge place of cyclone plate (16), the internal orifice of coal dust import (10) is aimed at the awl point of current divider (6), fires chamber (7) at the beginning of one of the formation between the internal orifice of coal dust import (10) and the current divider (6).

2, as claimed in claim 1 is the high-temperature evaporation burner of fuel with water, coal dust, it is characterized in that forming an air inlet (17), formation secondary air mouth (15) between the maximum gauge place of cyclone plate (16) and the annular passage (14) between the internal orifice of the minimum diameter place of said cyclone plate (16) and coal dust import (10).

3, as claimed in claim 1 is the high-temperature evaporation burner of fuel with water, coal dust, it is characterized in that said burner inner wall with refractory material (1), and outer wall is surrounded by water jacket (5).

4, as claimed in claim 1 is the high-temperature evaporation burner of fuel with water, coal dust, it is characterized in that said steam pipe (11) is communicated with steam-water separator (19).

5, as claimed in claim 1 is the high-temperature evaporation burner of fuel with water, coal dust, it is characterized in that all having on the inner conical surface of said steam heater (4) and the circular shrouding steam portal (13).

6, as claimed in claim 1 is the high-temperature evaporation burner of fuel with water, coal dust, it is characterized in that forming between said current divider (6) and the flame export (2) high temperature combustors (3), the internal diameter of this high temperature combustors (3) and first combustion chamber (7) is greater than the internal diameter of flame export (2).

7, as claimed in claim 1 is the high-temperature evaporation burner of fuel with water, coal dust, it is characterized in that on the inwall of said air channel (14) also with refractory material (18).

8, as claimed in claim 1 is the high-temperature evaporation burner of fuel with water, coal dust, it is characterized in that also being connected with on the outer wall of said burner the air inlet (8) that links to each other with blower fan.