CN201547755U

CN201547755U - Secondary back-burning device for fly ash in flue gas of boiler

Info

Publication number: CN201547755U
Application number: CN 200920254385
Authority: CN
Inventors: 何明春; 赵伟; 吴彦君
Original assignee: Jihua 3502 Professional Garment Co Ltd
Current assignee: Jihua 3502 Professional Garment Co Ltd
Priority date: 2009-11-09
Filing date: 2009-11-09
Publication date: 2010-08-11
Anticipated expiration: 2019-11-09

Abstract

The utility model relates to a secondary back-burning device for fly ash in the flue gas of a boiler. The device comprises a flue gas ash placing hopper, a connecting pipe and a throat pipe, wherein, the connecting pipe is arranged on the flue gas ash placing hopper; the throat pipe is arranged on the connecting pipe; one end of the throat pipe is arranged on a blower, and the other end thereof is connected with two ash collecting pipes; and the ash outlets of the ash collecting pipes are connected with a furnace chamber. The utility model prolongs the residence time when fly ash burns in the furnace chamber, makes full use of the heating value of the fly ash, ensures that the temperature of the flame of the furnace chamber to be improved by 50 DEG C (that is, the temperature reaches 1150 DEG C), reduces ash residue carbon content by one percent, reduces fly ash discharge quantity by 40 percent, improves the use rate of coal, reduces coal burning quantity (that is, the coal consumption is reduced by 5 percent), and reduces power cost.

Description

The boiler smoke flying dust secondary device that flashes back

Technical field

The utility model relates to a kind of boiler smoke flying dust secondary device that flashes back.

Background technology

Boiler coal produces a large amount of flying dusts in combustion process, flying dust mainly turns over the crook at the convection tube underflue to be assembled, need manually regularly to open plate and put ash, open number of times too much easily advances cold wind, number of times is crossed influences the convection tube heat transfer at least, the calorific value of these flying dusts is about 3700 kilocalories, and quantity is about about 10% of coal consumption, no matter from calorific value higher value is arranged all quantitatively still.

The utility model content

The boiler smoke flying dust secondary that technical problem to be solved in the utility model provides a kind ofly makes fume duct fly ash carry out second-time burning, improve the coal utilization rate, reduce Coal-fired capacity and the reduce power cost device that flashes back.

The utility model adopts following technical scheme:

The utility model comprises that cigarette ash puts ash bucket, is arranged on cigarette ash and puts the tube connector on the ash bucket and be arranged on trunnion on the tube connector, and described trunnion one end is arranged on the blower fan, and the other end is connected with the two-way ash-collecting pipe, and two-way ash-collecting pipe ash hole is connected with burner hearth.

The utility model two-way ash-collecting pipe is connected with hearth biside wall.

The utility model good effect is as follows: the utility model utilization has Fan pipeline now, the two-way ash-collecting pipe is installed on the trunnion, air-flow in the blower fan secondary wind disturbance burner hearth at work, be blown into burner hearth from both sides after utilizing the trunnion negative pressure to make flying dust enter Fan pipeline, the utility model prolongs flying dust and burns the time of staying at burner hearth, make full use of the flying dust calorific value, use the utility model can make the furnace flame temperature improve 50 ℃, can reach 1150 ℃, ash content carbon descends 1%, the fly ash emission amount reduces by 40%, has improved the coal utilization rate, reduces Coal-fired capacity, make coal consumption descend 5%, reduced power cost.

Description of drawings

Accompanying drawing 1 is the utility model structural representation

Accompanying drawing 2 is the utility model plan structure schematic diagram

In the accompanying drawings: 1 cigarette ash is put ash bucket, 2 tube connectors, 3 blower fans, 4 ash-collecting pipes, 5 burner hearths, 6 trunnions, 7 ash-collecting pipes.

The specific embodiment

Shown in accompanying

drawing

1,2, the utility model comprises that cigarette ash puts ash bucket 1, is arranged on cigarette ash and puts the tube connector 2 on the ash bucket 1 and be arranged on trunnion 6 on the tube connector 2, described trunnion 6 one ends are arranged on the blower fan 3, the other end is connected with ash-collecting pipe 4,7, ash-collecting pipe 4,7 ash holes are connected with burner hearth 5, are specially ash-collecting pipe 4,7 and are connected with burner hearth 5 two sides.

As accompanying drawing 1, shown in 2, the utility model utilization has Fan pipeline now, two-way ash-collecting pipe 4 is installed on

trunnion

6,7, at work, flying dust is put ash bucket 1 from cigarette ash and is entered the trunnion 6 by tube connector 2, by air-flow in the blower fan secondary wind disturbance burner hearth, utilize trunnion 6 negative pressure that flying dust is entered behind the Fan pipeline from two-way ash-collecting pipe 4,7 are blown into burner hearth 5, make the flying dust second-time burning, the utility model prolongs flying dust in the 5 burning time of staying of burner hearth, make full use of the flying dust calorific value, use the utility model can make the furnace flame temperature improve 50 ℃, can reach 1150 ℃, ash content carbon descends 1%, the fly ash emission amount reduces by 40%, has improved the coal utilization rate, reduces Coal-fired capacity, make coal consumption descend 5%, reduced power cost.

Claims

1. the boiler smoke flying dust secondary device that flashes back, it is characterized in that it comprises that cigarette ash puts ash bucket (1), is arranged on cigarette ash and puts the tube connector (2) on the ash bucket (1) and be arranged on trunnion (6) on the tube connector (2), described trunnion (6) one ends are arranged on the blower fan (3), the other end is connected with ash-collecting pipe (4,7), and ash-collecting pipe (4,7) ash hole is connected with burner hearth (5).

2. the boiler smoke flying dust secondary according to claim 1 device that flashes back is characterized in that described ash-collecting pipe (4,7) is connected with burner hearth (5) two side.