CN106196032A - A kind of blowing system for CFB flue gas generation equipment - Google Patents

A kind of blowing system for CFB flue gas generation equipment Download PDF

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Publication number
CN106196032A
CN106196032A CN201610769181.3A CN201610769181A CN106196032A CN 106196032 A CN106196032 A CN 106196032A CN 201610769181 A CN201610769181 A CN 201610769181A CN 106196032 A CN106196032 A CN 106196032A
Authority
CN
China
Prior art keywords
air
feed system
air feed
burner hearth
wind
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.)
Pending
Application number
CN201610769181.3A
Other languages
Chinese (zh)
Inventor
林雨
蔡文钢
陈金火
龚俊
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.)
Zigong Huaxi Energy Industry Co Ltd
Original Assignee
Zigong Huaxi Energy Industry 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 Zigong Huaxi Energy Industry Co Ltd filed Critical Zigong Huaxi Energy Industry Co Ltd
Priority to CN201610769181.3A priority Critical patent/CN106196032A/en
Publication of CN106196032A publication Critical patent/CN106196032A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00Fluidised bed combustion apparatus
    • F23C10/18Details; Accessories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00Passages or apertures for delivering secondary air for completing combustion of fuel 
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N3/00Regulating air supply or draught
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion

Abstract

The invention discloses a kind of blowing system for CFB flue gas generation equipment, including First air air feed system, secondary wind air feed system, noble gas air feed system, returning charge wind air feed system, described First air air feed system respectively with burner hearth bottom, charging gear connects to provide First air, the layering of described secondary wind air feed system connects to provide secondary wind with emulsion zone and the dilute-phase zone of burner hearth, the layering of described noble gas connects to provide noble gas with emulsion zone and the dilute-phase zone of burner hearth, described returning charge wind air feed system connects to provide returning charge wind with the material returning device bottom heat-insulating flue gas rotary separator.The method have the benefit that offer fuel gas in burner hearth is made it more uniform at burning indoor distribution by layering, thus avoid occurring local coking phenomenon, and make fuel combustion more fully, improve fuel availability, save fuel.

Description

A kind of blowing system for CFB flue gas generation equipment
Technical field
The present invention relates to a kind of blowing system, a kind of blowing system for CFB flue gas generation equipment.
Background technology
The flue gas generation equipment of current domestic operation is smaller, and its capacity is general all at below 20MW.These equipment are big Cause can be to be divided into chain furnace form, coal-powder boiler form, fluidized bed furnace form and bubbling pool furnace form etc..
In actual applications, these flue gas generation equipment are substantially all and have a problem that, it is simply that the combustion furnace of combustion gas furnace The bad control of bore temperature, often some temperatures at localized regions are inadequate, but other regional areas temperature again is too high and produce knot Burnt phenomenon.
Accordingly, it would be desirable to take measures burner hearth is improved, the temperature field in burner hearth is preferably controlled System.
Summary of the invention
The goal of the invention of the present invention is: for the problem of above-mentioned existence, it is provided that a kind of for CFB flue gas generation equipment Blowing system, can be better controlled the temperature field in burner hearth.
The technical scheme of CFB flue gas generation equipment involved in the present invention is as follows:
A kind of utilize solid fuel ignition to produce gas as the CFB flue gas generation equipment of technique medium, including burner hearth, Heat-insulating rotary separator, rear vertical shaft and material returning device, transition flue duct and combustion furnace are passed through in described heat-insulating rotary separator upper end Thorax upper end connects, and the lower end of described heat-insulating flue gas rotary separator is installed material returning device and isolated solid particulate matter is led back combustion Burning the combustor of burner hearth, upper end is connected with rear shaft top by horizontal flue.Described burner hearth is divided into from top to bottom Air compartment, emulsion zone, dilute-phase zone (wherein, emulsion zone and dilute-phase zone are combustor), solid particulate matter is led back combustion by described material returning device The emulsion zone burning burner hearth rekindles, and described emulsion zone sidepiece arranges charging gear.Described air compartment top arranges air distribution plate and wind Cap, air compartment bottom arranges air inlet and slag-drip opening.Described heat-insulating rotary separator is divided into cone section, straight section and flue gas from top to bottom Outlet section, described straight section sidepiece arranges the gas approach window connected with transition flue duct.Use heat-insulating rotary separator by unburned Most fuel particle separates with high-temperature flue gas, can obtain the high-temperature flue gas of cleaning.Described material returning device include standpipe, feed back valve body and Refeed line, described feed back valve body is arranged on riser bottom, and described feed back body base arranges some blast caps with ft connection, institute State refeed line to connect with feed back valve body-side, and the two junction is higher than blast cap height, utilizes blast cap to spray in material returning valve body High velocity air, the unburnt fuel granule that disturbance is collected reaches fluidized state, and make its uniformly, continuously and stably from returning Material pipe flow goes out.
A kind of blowing system technical scheme for CFB flue gas generation equipment provided by the present invention is as follows:
Including First air air feed system, secondary wind air feed system, noble gas air feed system, material returning device air feed system, described one Secondary wind air feed system respectively with bottom burner hearth, charging gear connect to provide First air, described secondary wind air feed system divides Layer connects to provide secondary wind with emulsion zone and the dilute-phase zone of burner hearth, and described noble gas is layered the close phase with burner hearth District connects with dilute-phase zone to provide noble gas, and described returning charge wind air feed system connects with material returning device to provide returning charge wind.Returning charge Wind is fresh cold air.
As preferably, described material returning device air feed system includes returning charge blower fan, and returning charge blower fan passes through material returning device fluidized wind arm Connecting with material returning device and provide returning charge wind into it, unnecessary wind is then sent to the combustor of burner hearth by overflow air channel.
As preferably, described First air air feed system includes that primary air fan, the airduct of described primary air fan are divided into three Pipe, the air compartment air intake that the some windburn arm connected with the emulsion zone of burner hearth respectively connects with burner hearth bottom plenum props up That manages and connect with charging gear blows coal wind arm.The air intake of described primary air fan is the air through heating of fresh natural. First air enters combustor from air distribution plate and the blast cap of air compartment, and fuel particle blows formation suspended state, it is provided that suitably oxygen amount Formed and stablize high temperature suspension combustion region.
As preferably, described secondary wind air feed system includes that overfire air fan, the airduct of described overfire air fan are divided into some points The combustor secondary wind arm that layer connects with emulsion zone and the dilute-phase zone of burner hearth.The air intake of described overfire air fan be fresh enter Wind.Secondary air separating floor height speed enters the combustor top of burner hearth, adds strong disturbance supplemental oxygen, controls by First air from stove Tail band, to the fine grain burn-off rate of fuel in furnace roof region, fully improves efficiency of combustion.
As preferably, described noble gas air feed system includes emulsion zone booster fan and dilute-phase zone booster fan, described The airduct of emulsion zone booster fan is the emulsion zone noble gas arm that the emulsion zone with burner hearth connects, and described dilute-phase zone increases The airduct of pressure fan is the dilute-phase zone noble gas arm that the dilute-phase zone with burner hearth connects.The high temperature cigarette drawn from rear vertical shaft Gas is after the industrial utilization of other system, and temperature is the highest, but no longer has flammable nature, becomes high temperature inert gas Body.Although the temperature of high temperature inert gas is higher, but much lower compared with temperature in burner hearth, supplied by noble gas Wind system introduces burner hearth, it is possible to absorb the heat in this region, reduces the temperature of burner hearth, prevents this region from local occur Coking.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
It is layered providing fuel gas to make it more uniform at burning indoor distribution in burner hearth, thus avoids local knot Burnt phenomenon, and make fuel combustion more abundant, improve fuel availability, save fuel.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention.
Labelling in figure:
1-1 is returning charge blower fan, and 1-2 is overflow air channel, material returning device fluidized wind arm;
2-1 is primary air fan, and 2-2 is a windburn arm, and 2-3 is air compartment air intake arm, and 2-4 is material seeding wind arm;
3-1 is emulsion zone booster fan, and 3-2 is emulsion zone noble gas arm;
4-1 is overfire air fan, and 4-2 is combustor secondary wind arm;
5-1 is dilute-phase zone booster fan, and 5-2 is dilute-phase zone noble gas arm.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
Embodiment:
As it is shown in figure 1, a kind of blowing system for CFB flue gas generation equipment, including First air air feed system, secondary wind air feed System, noble gas air feed system, returning charge wind air feed system, described First air air feed system respectively with burner hearth bottom, give Material device connects to provide First air, described secondary wind air feed system be layered connect with the emulsion zone of burner hearth and dilute-phase zone with Thering is provided secondary wind, the layering of described noble gas connects to provide noble gas with emulsion zone and the dilute-phase zone of burner hearth, described Returning charge wind air feed system connects with material returning device to provide returning charge wind.
Described material returning device air feed system includes that returning charge blower fan 1-1, returning charge blower fan 1-1 are by material returning device fluidized wind arm (1- 3) connect with material returning device into its provide returning charge wind, unnecessary wind is then sent to the combustor of burner hearth by overflow air channel 1-2.
Described First air air feed system includes that primary air fan 2-1, the airduct of described primary air fan 2-1 are divided into three arms, The air compartment air intake that the some windburn arm 2-2 connected with the emulsion zone of burner hearth respectively connects with burner hearth bottom plenum props up Pipe 2-3 and the material seeding wind arm 2-4 connected with charging gear.
Described secondary wind air feed system include overfire air fan 4-1, the airduct of described overfire air fan 4-1 be divided into some layerings with The combustor secondary wind arm 4-2 that the emulsion zone of burner hearth connects with dilute-phase zone.
Described noble gas air feed system includes emulsion zone booster fan 3-1 and dilute-phase zone booster fan 5-1, described close phase The airduct of district booster fan 3-1 is the emulsion zone noble gas arm 3-2 that the emulsion zone with burner hearth connects, described dilute-phase zone The airduct of booster fan 5-1 is the dilute-phase zone noble gas arm 5-2 that the dilute-phase zone with burner hearth connects.

Claims (5)

1. the blowing system for CFB flue gas generation equipment, it is characterised in that: include First air air feed system, secondary wind Air feed system, noble gas air feed system, material returning device air feed system, described First air air feed system respectively with burner hearth at the bottom of Portion, charging gear connect to provide First air, the layering of described secondary wind air feed system and the emulsion zone of burner hearth and dilute-phase zone Connection is to provide secondary wind, and the layering of described noble gas connects to provide indifferent gas with emulsion zone and the dilute-phase zone of burner hearth Body, described returning charge wind air feed system connects with material returning device to provide returning charge wind.
A kind of blowing system for CFB flue gas generation equipment the most according to claim 1, it is characterised in that return described in: Glassware air feed system includes returning charge blower fan (1-1), and returning charge blower fan (1-1) passes through material returning device fluidized wind arm (1-3) and material returning device Connecting and provide returning charge wind for it, unnecessary wind is then sent to the combustor of burner hearth by overflow air channel (1-2).
A kind of blowing system for CFB flue gas generation equipment the most according to claim 1, it is characterised in that: described one Secondary wind air feed system includes primary air fan (2-1), and the airduct of described primary air fan (2-1) is divided into three arms, respectively with burning Air compartment air intake arm (2-3) that connects with burner hearth bottom plenum of some windburn arm (2-2) of the emulsion zone connection of burner hearth and Material seeding wind arm (2-4) connected with charging gear.
A kind of blowing system for CFB flue gas generation equipment the most according to claim 1, it is characterised in that: described two Secondary wind air feed system includes that overfire air fan (4-1), the airduct of described overfire air fan (4-1) are divided into some layerings and burner hearth Combustor secondary wind arm (4-2) that emulsion zone connects with dilute-phase zone.
A kind of blowing system for CFB flue gas generation equipment the most according to claim 1, it is characterised in that: described lazy Property gas air feed system includes emulsion zone booster fan (3-1) and dilute-phase zone booster fan (5-1), described emulsion zone booster fan (3-1) airduct is emulsion zone noble gas arm (3-2) that the emulsion zone with burner hearth connects, described dilute-phase zone supercharging wind The airduct of machine (5-1) is dilute-phase zone noble gas arm (5-2) that the dilute-phase zone with burner hearth connects.
CN201610769181.3A 2016-08-31 2016-08-31 A kind of blowing system for CFB flue gas generation equipment Pending CN106196032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610769181.3A CN106196032A (en) 2016-08-31 2016-08-31 A kind of blowing system for CFB flue gas generation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610769181.3A CN106196032A (en) 2016-08-31 2016-08-31 A kind of blowing system for CFB flue gas generation equipment

Publications (1)

Publication Number Publication Date
CN106196032A true CN106196032A (en) 2016-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610769181.3A Pending CN106196032A (en) 2016-08-31 2016-08-31 A kind of blowing system for CFB flue gas generation equipment

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449483A (en) * 1983-01-07 1984-05-22 Electrodyne Research Corporation Unfired drying and sorting apparatus for preparation of solid fuel as a feedstock for a combustor
JPS63315809A (en) * 1987-06-17 1988-12-23 Mitsui Eng & Shipbuild Co Ltd Method of preventing unusual combustion in lowest part of dense bed of circulating type fluidized bed boiler
JPH0835611A (en) * 1994-07-27 1996-02-06 Hitachi Ltd Power plant with fluidized-bed boiler
CN101021318A (en) * 2006-02-16 2007-08-22 山东兖矿国际焦化有限公司 New technique for solving the problem of middle-and small-size circulating fluidized bed boiler coking
CN101629722A (en) * 2009-08-27 2010-01-20 北京航天动力研究所 Pesticide waste residue fluidized bed incinerating process and pesticide waste residue fluidized bed incinerating device
CN101725965A (en) * 2008-10-21 2010-06-09 神华集团有限责任公司 High-temperature fume furnace of circulating fluidized bed and control method thereof
CN102628590A (en) * 2012-03-20 2012-08-08 广东电网公司电力科学研究院 Biomass circulating fluidized bed direct combustion apparatus
CN206094050U (en) * 2016-08-31 2017-04-12 自贡华西能源工业有限公司 A air distribution system for CFB flue gas emergence equipment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449483A (en) * 1983-01-07 1984-05-22 Electrodyne Research Corporation Unfired drying and sorting apparatus for preparation of solid fuel as a feedstock for a combustor
JPS63315809A (en) * 1987-06-17 1988-12-23 Mitsui Eng & Shipbuild Co Ltd Method of preventing unusual combustion in lowest part of dense bed of circulating type fluidized bed boiler
JPH0835611A (en) * 1994-07-27 1996-02-06 Hitachi Ltd Power plant with fluidized-bed boiler
CN101021318A (en) * 2006-02-16 2007-08-22 山东兖矿国际焦化有限公司 New technique for solving the problem of middle-and small-size circulating fluidized bed boiler coking
CN101725965A (en) * 2008-10-21 2010-06-09 神华集团有限责任公司 High-temperature fume furnace of circulating fluidized bed and control method thereof
CN101629722A (en) * 2009-08-27 2010-01-20 北京航天动力研究所 Pesticide waste residue fluidized bed incinerating process and pesticide waste residue fluidized bed incinerating device
CN102628590A (en) * 2012-03-20 2012-08-08 广东电网公司电力科学研究院 Biomass circulating fluidized bed direct combustion apparatus
CN206094050U (en) * 2016-08-31 2017-04-12 自贡华西能源工业有限公司 A air distribution system for CFB flue gas emergence equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
程绍兵等: "《锅炉专业基本知识》", 31 May 2015, 中国电力出版社 *

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Application publication date: 20161207

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