CN102506439A - Method for blowing soot for waste heat boiler by using waste - Google Patents
Method for blowing soot for waste heat boiler by using waste Download PDFInfo
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- CN102506439A CN102506439A CN2011103034612A CN201110303461A CN102506439A CN 102506439 A CN102506439 A CN 102506439A CN 2011103034612 A CN2011103034612 A CN 2011103034612A CN 201110303461 A CN201110303461 A CN 201110303461A CN 102506439 A CN102506439 A CN 102506439A
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Abstract
The invention provides a method for blowing soot for a waste heat boiler by using waste, relating to a soot blowing method of a heat exchange pipe of a waste heat boiler. The method comprises the following steps: blown gas of a gas producer enters a cyclone dust collector and gas flow at an exhaust port of the cyclone dust collector enters an exhaust gas waste heat boiler. The method is characterized in that the cyclone dust collector collects deposited pulverized coal after being separated, and when the height of accumulated pulverized coal is close to a lower orifice of a central exhaust pipe of the cyclone dust collector, the accumulated pulverized coal is driven by blown gas is discharged from the exhaust port of the cyclone dust collector and enters a burner of the exhaust gas waste heat boiler; and particles produced after the combustion of blown gas and carrying coarse pulverized coal enters the boiler through a smoke channel to perform soot blowing on a heat exchange pipe bundle. The method has the advantages that blown gas, waste residues, waste soot and the like can be used as additives of coarse particulate pulverized coal soot, low-grade heat value in the waste residues and waste soot can be recycled, the utilization rate can be improved and a very good soot blowing effect can also be reached; therefore the method is an economical, efficient, convenient and quick technology.
Description
Technical field:
The present invention relates to residual heat boiler for exchanging heat pipe ash-blowing method.
Background technology:
The chemical plant production process often produces gas generator blowing-out gas, ammonia synthesis purge gas, the methyl alcohol waste gas such as venting of speeding.Prior art is these waste gas to be introduced waste gas residual heat boiler burn, and can make full use of the energy.Waste gas residual heat boiler is made up of combustion furnace, boiler body, is provided with exhaust gases passes between the two, and flue gas gets into heat-exchanging tube bundle realization indirect heat exchange in boiler body and the boiler body thus.After the gas generator blowing-out gas is introduced cyclone dust collectors, the coal dust sedimentation, air-flow is introduced exhaust boiler by exhaust outlet, regularly opens the coal dust recycling that the cyclone dust collectors ash discharging hole takes out sedimentation.
Boiler is in the production run process, and surface such as its heating surface-water-cooling wall, superheater, economizer, preheater and flue is prone to dust stratification and slagging scorification, and it not only makes the boiler heating surface heat transfer weaken; Cause boiler thermal output to reduce; Reduce to produce load, and, when fouling of heating surface and coking are serious; Also possibly cause unexpected blowing out, cause heavy economic losses.Ash-blowing method adopts soot blowers such as stock soot blower, quarter butt soot blower, steel ball soot blower, waterpower soot blower and acoustic wave ash ejector to blow ash more.It is better that wherein acoustic wave ash ejector blows grey effect; This technology is to convert compressed air (or steam) to high-power sound wave (a kind of pressure wave of in space medium/gas, propagating with the form of dilatational wave) to send in the stove; The dilatational wave that dust stratification on heating surface receives with the certain frequency alternate draws repeatedly, presses and do the time spent, comes off because of fatigue is loose, takes away with flue gas stream; Or under the gravity effect, sink to ash bucket and discharge.But sootblower arrangement is on operation and performance, exists to blow ash and be limited in scope, blow ash and have that dead angle, energy consumption are high, maintenance cost is big, operation is inconvenient, have drawbacks such as side effect, and utilization rate is very low.
In addition, the slag of the gas generator in chemical plant, CFBB also is underutilized.
Summary of the invention:
The objective of the invention is to overcome above defective, a kind of method of utilizing waste material to blow ash to waste heat boiler is provided.
Scheme one of the present invention is: comprise that the gas generator blowing-out gas gets into cyclone dust collectors; Cyclone dust collectors exhaust outlet air-flow gets into waste gas residual heat boiler; Cyclone dust collectors it is characterized in that: after will separate the coal powder collection of back sedimentation; When accumulation highly reaches contiguous cyclone dust collectors central row tracheae lower nozzle, drive from the cyclone dust collectors exhaust outlet by blowing-out gas and to discharge, get into the combustion furnace of waste gas residual heat boiler; The rough coal powder particles of carrying secretly that blowing-out gas produces after burning gets in the boiler body through exhaust gases passes, and ash is blown in the heat exchanging tube bank.
Scheme two of the present invention is: it is characterized in that: the slag of the slag screen of gas generator, CFBB being selected the 3-10mm particle diameter is stored in the warehouse; Warehouse discharge gate valve is driven valve for the charging aperture of setting up on the waste gas residual heat boiler exhaust gases passes and is sent slag, and slag gets into exhaust gases passes along with ash is blown in heat exchanging tube bank in the flue gas entering boiler body.
The invention has the advantages that: blowing-out gas capable of using, waste residue, useless ash etc. are as coarse granule powder ash additive, and low-grade calorific value in promptly recyclable waste residue, the useless ash is increased operation rate, and can reach again and well blow grey effect, be a kind of economy, efficient, convenient technology.
Description of drawings:
Fig. 1 is the present invention program's one structural representation.
Fig. 2 is the present invention program's two structural representations.
The specific embodiment:
Scheme one of the present invention is: comprise that the gas generator blowing-out gas gets into cyclone dust collectors 2; Cyclone dust collectors 2 exhaust outlet air-flows get into waste gas residual heat boiler; Cyclone dust collectors 2 it is characterized in that: after will separate the coal powder collection of back sedimentation; When accumulation highly reaches contiguous cyclone dust collectors 2 central row tracheae lower nozzles, drive from cyclone dust collectors 2 exhaust outlets by blowing-out gas and to discharge, introduce the combustion furnace 3 of waste gas residual heat boiler; The rough coal powder particles of carrying secretly that blowing-out gas produces after burning gets in the boiler body 5 through exhaust gases passes 4, and ash is blown in the heat exchanging tube bank.
Scheme two of the present invention is: it is characterized in that: the slag of the slag screen of gas generator 1, CFBB being selected the 3-10mm particle diameter is stored in the warehouse 6; Warehouse 6 discharge gate valves are driven valve for the charging aperture of setting up on the waste gas residual heat boiler exhaust gases passes 4 and are sent slag, and slag gets into exhaust gases passes 4 and blows ash along with flue gas gets into boiler body 5 interior heat exchanging tube banks.
The coarse granule powder ash of carrying secretly in the boiler smoke flows with flue gas fast, and the dust stratification of flow process heat exchanging tube bank or coking etc. produce to be impacted, rub, and makes its loose coming off, and blows grey effect thereby play.Because flow of flue gas property is good, therefore blowing grey scope extensively and not exists the dead angle.The coarse granule powder ash of carrying secretly in the flue gas is many more, and it is good more to blow grey effect.Therefore, can reach through the coarse granule powder ash content in the artificial interpolation flue gas and well blow grey effect.Coarse granule powder ash content too much can increase the wearing and tearing of heat-exchanging tube bundle in certain flue gas; Therefore should suitably control the coarse granule powder ash content in the flue gas; Coarse granule powder ash content in the flue gas should be controlled in the 5g/Nm3, so both can guarantee to blow grey effect, also can prevent the tube bank wearing and tearing.
Be entrained with coarse grained coal dust in gas generator 1 up semiwater gas and the blowing-out gas, all sedimentation after cyclone dust collectors 2 separate.Under the normal condition, this coal dust is reclaimed by the ash discharging hole discharging and uses.2 pairs of coal dusts of cyclone dust collectors of the present invention do not discharge.When coal powder collection arrives to a certain degree; During height of deposition vicinity central tube lower nozzle; This coal dust can be delivered to the blowing-out gas waste heat boiler with blowing-out gas; The flue gas that blowing-out gas produces after burning is carried the tube bank of rough coal powder particles heat exchanging secretly and is blown ash, blows the ash operation thereby produce the intermittence of going round and beginning again, and reaches and blows grey effect.
The coal dust, also can realize in the cyclone dust collectors 2 after utilizing gas generator 1 through coarse granule powder ash adding set.In 3 outlets of blowing-out gas waste heat boiler combustion furnace coarse granule powder ash is set and adds coarse granule powder ash.The coarse granule powder ash that filters out is stored in the little warehouse 6 and controls charging through star-like feed valve or inlet valve, and charging aperture is arranged at blowing-out gas waste heat boiler combustion furnace 3 outlet tops.The coarse granule powder ash that adds blows ash with the tube bank of flue gas heat exchanging, after collision, sinks and to the ash bucket of bottom, discharges.
Claims (2)
1. one kind is utilized waste material to blow grey method to waste heat boiler; Comprise that the gas generator blowing-out gas gets into cyclone dust collectors (2); Cyclone dust collectors (2) exhaust outlet air-flow gets into waste gas residual heat boiler, it is characterized in that: after cyclone dust collectors (2) will separate the coal powder collection of back sedimentation, when accumulation highly reaches contiguous cyclone dust collectors (2) central row tracheae lower nozzle; Discharge from cyclone dust collectors (2) exhaust outlet by the blowing-out gas drive; Introduce the combustion furnace (3) of waste gas residual heat boiler, the rough coal powder particles of carrying secretly that blowing-out gas produces after burning gets in the boiler body (5) through exhaust gases passes (4), and ash is blown in the heat exchanging tube bank.
2. one kind is utilized waste material to blow grey method to waste heat boiler; It is characterized in that: the slag of the slag screen of gas generator (1), CFBB being selected the 3-10mm particle diameter is stored in the warehouse (6); Warehouse (6) discharge gate valve is driven valve for the charging aperture of setting up on the waste gas residual heat boiler exhaust gases passes (4) and is sent slag, and slag gets into exhaust gases passes (4) and blows ash along with flue gas gets into the interior heat exchanging tube bank of boiler body (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110303461 CN102506439B (en) | 2011-09-30 | 2011-09-30 | Method for blowing soot for waste heat boiler by using waste |
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| CN 201110303461 CN102506439B (en) | 2011-09-30 | 2011-09-30 | Method for blowing soot for waste heat boiler by using waste |
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| CN102506439A true CN102506439A (en) | 2012-06-20 |
| CN102506439B CN102506439B (en) | 2013-08-21 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737144A (en) * | 2016-02-25 | 2016-07-06 | 四川省宜宾惠美线业有限责任公司 | Ash removal method suitable for fluidized bed boiler |
| CN105737143A (en) * | 2016-02-25 | 2016-07-06 | 四川省宜宾惠美线业有限责任公司 | Circular ash removing method suitable for fluidized bed boiler |
| CN105783536A (en) * | 2016-03-29 | 2016-07-20 | 石家庄市正定金石化工有限公司 | Device for preliminarily reducing smoke dust in big furnace tail gas through cyclone dust collector |
| CN105782983A (en) * | 2016-03-21 | 2016-07-20 | 安徽未名生物环保有限公司 | Repeated waste gas recycling type refuse disposal method |
| CN105823050A (en) * | 2016-03-21 | 2016-08-03 | 安徽未名生物环保有限公司 | Energy-saving type garbage processing system |
| CN103615714B (en) * | 2013-11-20 | 2016-09-21 | 东方电气集团东方锅炉股份有限公司 | A kind of method and system using abrasion-proof materiel circulation to prevent boiler heating surface from staiing |
| CN106016314A (en) * | 2016-07-26 | 2016-10-12 | 智胜化工股份有限公司 | Three-waste furnace and waste heat furnace integrated ash circulating device |
| CN114543553A (en) * | 2022-03-24 | 2022-05-27 | 重庆科技学院 | Intermittent circulating fluidized bed boiler bottom slag waste heat recovery coupling CO2Fixing device |
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| TW201027009A (en) * | 2008-10-28 | 2010-07-16 | Linde Ag | Process and device for limiting soot deposits in waste heat boilers |
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| JPH1073225A (en) * | 1996-08-29 | 1998-03-17 | Nkk Corp | Melting device for burnt residue |
| GB2342147A (en) * | 1998-10-01 | 2000-04-05 | Alexander Cameron Henderson | A ball for use in a furnace |
| CN1789814A (en) * | 2004-12-15 | 2006-06-21 | 中国科学院工程热物理研究所 | Method and apparatus for removing viscous ash deposit in boiler |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615714B (en) * | 2013-11-20 | 2016-09-21 | 东方电气集团东方锅炉股份有限公司 | A kind of method and system using abrasion-proof materiel circulation to prevent boiler heating surface from staiing |
| CN105737143A (en) * | 2016-02-25 | 2016-07-06 | 四川省宜宾惠美线业有限责任公司 | Circular ash removing method suitable for fluidized bed boiler |
| CN105737144A (en) * | 2016-02-25 | 2016-07-06 | 四川省宜宾惠美线业有限责任公司 | Ash removal method suitable for fluidized bed boiler |
| CN105737144B (en) * | 2016-02-25 | 2018-01-05 | 四川省宜宾惠美线业有限责任公司 | A kind of process for deashing suitable for fluidized-bed combustion boiler |
| CN105737143B (en) * | 2016-02-25 | 2018-01-05 | 四川省宜宾惠美线业有限责任公司 | A kind of circulation process for deashing suitable for fluidized-bed combustion boiler |
| CN105782983B (en) * | 2016-03-21 | 2018-05-08 | 安徽未名生物环保有限公司 | A kind of exhaust gas recycled for multiple times type waste disposal method |
| CN105782983A (en) * | 2016-03-21 | 2016-07-20 | 安徽未名生物环保有限公司 | Repeated waste gas recycling type refuse disposal method |
| CN105823050A (en) * | 2016-03-21 | 2016-08-03 | 安徽未名生物环保有限公司 | Energy-saving type garbage processing system |
| CN105823050B (en) * | 2016-03-21 | 2018-05-08 | 安徽未名生物环保有限公司 | A kind of energy-saving refuse disposal system |
| CN105783536A (en) * | 2016-03-29 | 2016-07-20 | 石家庄市正定金石化工有限公司 | Device for preliminarily reducing smoke dust in big furnace tail gas through cyclone dust collector |
| CN106016314A (en) * | 2016-07-26 | 2016-10-12 | 智胜化工股份有限公司 | Three-waste furnace and waste heat furnace integrated ash circulating device |
| CN106016314B (en) * | 2016-07-26 | 2018-01-16 | 智胜化工股份有限公司 | Three wastes stove and waste-heat oven synthesis lime-ash EGR |
| CN114543553A (en) * | 2022-03-24 | 2022-05-27 | 重庆科技学院 | Intermittent circulating fluidized bed boiler bottom slag waste heat recovery coupling CO2Fixing device |
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| CN102506439B (en) | 2013-08-21 |
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