CN203068497U - Arrangement structure for mixed air for circulating fluidized bed ignition device - Google Patents

Arrangement structure for mixed air for circulating fluidized bed ignition device Download PDF

Info

Publication number
CN203068497U
CN203068497U CN 201220660763 CN201220660763U CN203068497U CN 203068497 U CN203068497 U CN 203068497U CN 201220660763 CN201220660763 CN 201220660763 CN 201220660763 U CN201220660763 U CN 201220660763U CN 203068497 U CN203068497 U CN 203068497U
Authority
CN
China
Prior art keywords
mixed
air
combustion chamber
air channel
arrangement structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN 201220660763
Other languages
Chinese (zh)
Inventor
顾虎雄
林敏�
何雁飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Huaguang Environmental Protection Energy Group Co., Ltd
Original Assignee
Wuxi Huaguang Boiler Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Huaguang Boiler Co Ltd filed Critical Wuxi Huaguang Boiler Co Ltd
Priority to CN 201220660763 priority Critical patent/CN203068497U/en
Application granted granted Critical
Publication of CN203068497U publication Critical patent/CN203068497U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides an arrangement structure for mixed air for a circulating fluidized bed ignition device. According to the arrangement structure, the swirling effect of primary mixed secondary air is kept, and a guide effect on hot flue gas can be produced, so that all the flow gas flows to a hearth, and then a furnace wall in the back of an ignition burner is prevented from being burnt and deformed. The arrangement structure comprises a water-cooled air chamber, wherein the water-cooled air chamber is communicated with a mixed air flue; the other end of the mixed air flue is communicated with a combustion chamber; a mixed secondary air device is sleeved on the connecting ring surface of the mixed air flue and the combustion chamber; secondary air pipes are uniformly distributed on the ring surface of the mixed secondary air device; the tail of the combustion chamber is connected with an ignition oil gun; and a primary combustion-supporting air inlet is formed between the combustion chamber and the ignition oil gun. The arrangement structure is characterized in that the secondary air pipes are arranged obliquely towards fixing points on the central axis of the mixed air flue.

Description

A kind of recirculating fluidized bed igniter is mixed the arrangement of wind
Technical field
The utility model relates to the technical field of CFBB, is specially the arrangement that a kind of recirculating fluidized bed igniter is mixed wind.
Background technology
The igniting of CFBB is a difficult point of boiler operatiopn, because the hot flue gas of ignition under bed is all earlier by beds, heat loss is little, thereby this method can save igniter fuel, and oil burner only needs 10 ~ 15% boiler outputs namely enough.
Existing ignition under bed apparatus structure, see Fig. 1, Fig. 2, it is arranged in parallel at furnace water cooling air compartment 1 rear side with the ignition under bed device, torch oil gun 4 required combustion airs are a wind 3, form about about 1300 ℃ hot flue gas behind air and the oil firing, hot flue gas fully mixes in wind mixed chamber by the cold air that rotates in mixing air channel 2, mix the back flue-gas temperature and evenly send into burner hearth through the blast cap that is arranged on the air distribution plate on the water cooled wind chamber 1 again for about 850 ℃, the bed material is heated to uniform temperature, throw coal again, the burning that the fuel that feeds continuously up to feeder can be stable.In order to make oil and wind that air distribution effect preferably be arranged, control mixes the flue-gas temperature in the air channel 2, guarantee that the bed material is subjected to the effect of gas radiation, shorten the duration of ignition as far as possible, the cold wind that the existing secondary air channel 7 that mixes overfire air device 5 blows out forms eddy flow, eddy flow can entrainment the oil gun root at portion of hot flue gas 6 rear portions to the combustion chamber, and makes start-up burner rear portion furnace wall burn red stain shape.
Summary of the invention
At the problems referred to above, the utility model provides a kind of recirculating fluidized bed igniter to mix the arrangement of wind, it keeps outside the cyclonic action of original mixing secondary wind, can also produce guide functions to hot flue gas, hot flue gas is all flowed to the burner hearth direction, avoided start-up burner rear portion furnace wall to burn red stain shape.
A kind of recirculating fluidized bed igniter is mixed the arrangement of wind, its technical scheme is such: it comprises water cooled wind chamber, described water cooled wind chamber is communicated with and mixes the air channel, the other end in described mixing air channel is communicated with the combustion chamber, described mixing air channel, the connection anchor ring of combustion chamber is set with the mixing overfire air device, be evenly equipped with secondary air channel on the described mixing overfire air device anchor ring, the afterbody of described combustion chamber is connected with torch oil gun, be provided with a combustion air import between described combustion chamber and the described torch oil gun, it is characterized in that: the fixing point inclined position of described secondary air channel on the central shaft in described mixing air channel arranged.
After adopting structure of the present utility model, because the fixing point inclined position of secondary air channel on the central shaft in described mixing air channel arranged, and secondary air channel is distributed in the anchor ring, the overfire air device that mix overfire air device and is set in the connection anchor ring that mixes air channel, combustion chamber, this structure is except the cyclonic action that keeps original mixing secondary wind, can also produce guide functions to hot flue gas, hot flue gas is all flowed to the burner hearth direction, avoided hot flue gas to enter the rear portion furnace wall of rear portion start-up burner, guaranteed that start-up burner rear portion furnace wall can not burn red stain shape.
Description of drawings
Fig. 1 is existing ignition under bed apparatus structure schematic diagram;
Fig. 2 is the secondary air channel arrangement schematic diagram of Fig. 1;
Fig. 3 is front view structural representation of the present utility model;
Fig. 4 is the secondary air channel arrangement schematic diagram of Fig. 3.
The specific embodiment
See Fig. 3, Fig. 4, it comprises water cooled wind chamber 1, water cooled wind chamber 1 is communicated with and mixes air channel 2, the other end that mixes air channel 2 is communicated with combustion chamber 6, the connection anchor ring that mixes air channel 2, combustion chamber 6 is set with and mixes overfire air device 5, mixes on overfire air device 5 anchor rings being evenly equipped with secondary air channel 7, and the fixing point A inclined position of secondary air channel 7 on the central shaft 8 that mixes air channel 2 arranged, the afterbody of combustion chamber 6 is connected with torch oil gun 4, is provided with a combustion air import 3 between combustion chamber 6 and the torch oil gun 4.

Claims (1)

1. a recirculating fluidized bed igniter is mixed the arrangement of wind, it comprises water cooled wind chamber, described water cooled wind chamber is communicated with and mixes the air channel, the other end in described mixing air channel is communicated with the combustion chamber, described mixing air channel, the connection anchor ring of combustion chamber is set with the mixing overfire air device, be evenly equipped with secondary air channel on the described mixing overfire air device anchor ring, the afterbody of described combustion chamber is connected with torch oil gun, be provided with a combustion air import between described combustion chamber and the described torch oil gun, it is characterized in that: the fixing point inclined position of described secondary air channel on the central shaft in described mixing air channel arranged.
CN 201220660763 2012-12-05 2012-12-05 Arrangement structure for mixed air for circulating fluidized bed ignition device Active CN203068497U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220660763 CN203068497U (en) 2012-12-05 2012-12-05 Arrangement structure for mixed air for circulating fluidized bed ignition device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220660763 CN203068497U (en) 2012-12-05 2012-12-05 Arrangement structure for mixed air for circulating fluidized bed ignition device

Publications (1)

Publication Number Publication Date
CN203068497U true CN203068497U (en) 2013-07-17

Family

ID=48767276

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220660763 Active CN203068497U (en) 2012-12-05 2012-12-05 Arrangement structure for mixed air for circulating fluidized bed ignition device

Country Status (1)

Country Link
CN (1) CN203068497U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944009A (en) * 2012-12-05 2013-02-27 无锡华光锅炉股份有限公司 Arrangement structure of mixing air of circulating fluid bed ignition device
CN104791779A (en) * 2015-04-16 2015-07-22 无锡锡能锅炉有限公司 Ignition-under-bed combustion device with air cooling structure for circulating fluidized bed boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944009A (en) * 2012-12-05 2013-02-27 无锡华光锅炉股份有限公司 Arrangement structure of mixing air of circulating fluid bed ignition device
CN104791779A (en) * 2015-04-16 2015-07-22 无锡锡能锅炉有限公司 Ignition-under-bed combustion device with air cooling structure for circulating fluidized bed boiler

Similar Documents

Publication Publication Date Title
CN101846315B (en) Coal dust concentration device and coal dust burner with same
CN101644431B (en) Self-stabilizing three-stage air-distribution low-NOx pulverized coal burner
CN204678328U (en) combustion powder industrial boiler
CN104501145A (en) Self-preheating and sectionalized pulverized coal combustion low-NOx combustion device and method
WO2015103831A1 (en) Fuel/gas-saving ignition and stable-combustion low-nitrogen swirling pulverized coal combustor
CN203068497U (en) Arrangement structure for mixed air for circulating fluidized bed ignition device
CN106439801B (en) A kind of reverse spray type bluff body vortex burner
CN102128446B (en) Boiler for carrying out mixed combustion on carbon black tail gas and coal
CN201475997U (en) Coal dust burner with self-stabilizing capability, three-stage air-distribution and low NOx content
CN203703982U (en) Combustor and combustion furnace
CN105042577A (en) Circulating fluidized bed boiler
CN205939147U (en) Steady flame formula combustor
CN102944009A (en) Arrangement structure of mixing air of circulating fluid bed ignition device
CN204756926U (en) High -efficient heat accumulation formula co -combustion ware
CN204084433U (en) Two drum longitudinal chain grate boiler
CN103791493B (en) Pulverized coal flame preheating fires system again
CN202082926U (en) Sub-speed temperature regulating burning nozzle
CN201964411U (en) High-power double-cyclone burning semi-premix gas burner
CN204756929U (en) Formula heat accumulation combustor is preheated in high -efficient gas
CN205480998U (en) Two low -nitrogen combustion machines that fire of gas -solid
CN201377792Y (en) Coal dust concentrating device and coal dust inflamer containing same
CN203927873U (en) A kind of energy-conservation chain grate boiler
CN102967047A (en) Coal dust hot-blast furnace
CN1086790C (en) Outer chamber type dual reflux coal-powder steady flame jet
CN210601600U (en) Preposed combustion device of oil gun

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address

Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi

Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd

Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi

Patentee before: WUXI HUAGUANG BOILER Co.,Ltd.

CP03 Change of name, title or address