CN101649240A - Multifunctional coal-fired energy-saving additive - Google Patents
Multifunctional coal-fired energy-saving additive Download PDFInfo
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- CN101649240A CN101649240A CN200910147803A CN200910147803A CN101649240A CN 101649240 A CN101649240 A CN 101649240A CN 200910147803 A CN200910147803 A CN 200910147803A CN 200910147803 A CN200910147803 A CN 200910147803A CN 101649240 A CN101649240 A CN 101649240A
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Abstract
本发明提供一种用于锅炉除焦、除灰及防腐蚀的多功能燃煤节能添加剂。其是由以下成分组成：硝酸钾5－15重量％，硝酸铜1－9重量％，硝酸镁4－12重量％，锌8－12重量％，氯化纳20－30重量％，硫酸硐10－20重量％，硝酸铝15－25重量％，硼酸1－7重量％。本发明的燃煤添加剂用量少，仅为燃料的万分之二至五，而且无毒、无味、无腐蚀、无爆炸危险、对人体无害、对环境无污染。The invention provides a multifunctional coal-fired energy-saving additive for boiler decoking, ash removal and corrosion prevention. It is composed of the following components: 5-15% by weight of potassium nitrate, 1-9% by weight of copper nitrate, 4-12% by weight of magnesium nitrate, 8-12% by weight of zinc, 20-30% by weight of sodium chloride, and 10% of sulfuric acid -20% by weight, 15-25% by weight of aluminum nitrate, and 1-7% by weight of boric acid. The coal-burning additive of the present invention has less consumption, which is only two to five ten-thousandths of fuel, and is non-toxic, tasteless, non-corrosive, non-explosive, harmless to human body, and non-polluting to the environment.
Description
Technical field
The invention belongs to chemical industry boiler rinsing inwall technical field, be specifically related to a kind of additive for fire coal that is used for boiler clinker removal.
Background technology
Problems such as the coking of coal firing boiler ubiquity burner hearth, dust stratification and corrosion.Behind boiler coke and dust stratification, capacity of boiler is reduced, funnel temperature and flue gas resistance rise.Combustion conditions is worsened, reduce boiler thermal output, and cause the partial water circulatory troubles, even make overheated the burning out of part tube wall and be forced to blowing out.Therefore the harm of coal stove coking is very big, has a strong impact on the safety and the economical operation of boiler.
Ash fouling on the boiler surface is divided into free-running property dust stratification and cohesiveness dust stratification.The cohesiveness dust stratification occurs in the high-temperature part of boiler, and for example burner hearth is referred to as coking.Because coking intensity height, physical method are difficult to remove, and have the characteristic of indeterminate growth, the hazardness of bringing is very big.Coal-fired mineral substance characteristic is depended in the generation of coking, the flyash that is in bunker coal center (temperature reaches 1450-1650 ℃) may all melt or surface melting, under normal circumstances, the combustion slag leaves combustion centre to be run into and should be cooled to solid state before the heating surface, is still taken away by combustion gas after colliding with heating surface like this, unlikelyly causes coking, if slag is when clashing into heating surface, still keep melted state, then stick on the tube wall, form coking.
Add pharmaceutical chemicals and can change the reaction mechanism of mineral substance in stove, thereby change its grey dirty characteristic.There is the people to study and adopts chemical additive to remove dust stratification on the boiler surface since the thirties, the sixties, be that the additive of main component begins to be used to solve the burner hearth coking with copper, and be developed to product in some countries use.Integrate decoking agent and dust-cleaning agent and mainly contain two big classes: oxidized form and salt type.The said products generally is that deashing is main, and decoking is auxilliary, and perhaps decoking is that main deashing is auxilliary, and have that dosage is big, problem such as contaminate environment, decoking deashing are not thorough.
Summary of the invention
At the problems referred to above of prior art, the invention provides and a kind ofly can be used for boiler clinker removal, ash disposal and etch-proof multifunctional coal-fired energy-saving additive.
For achieving the above object, the invention provides a kind of multifunctional coal-fired energy-saving additive, it is to be grouped into by following one-tenth: saltpetre 5-15 weight %, cupric nitrate 1-9 weight %, magnesium nitrate 4-12 weight %, zinc 8-12 weight %, sodium chloride 20-30 weight %, sulfuric acid cave 10-20 weight %, aluminum nitrate 15-25 weight %, boric acid 1-7 weight %.
Above-mentioned multifunctional coal-fired energy-saving additive preferably is grouped into by following one-tenth: saltpetre 10 weight %, cupric nitrate 7 weight %, magnesium nitrate 8 weight %, zinc 10 weight %, sodium chloride 25 weight %, sulfuric acid cave 15 weight %, aluminum nitrate 20 weight %, boric acid 5 weight %.
Beneficial effect of the present invention is that on the one hand, additive for fire coal of the present invention can improve the fusing point of fuel eutectic in hot environment, and they can not be sticked on the burner hearth metal wall; And can improve the fusing point of coking eutectic, and make its fusing and secondary combustion, for example zinc can produce combustion-supporting gas when burner hearth and other auxiliary agent mixed firing, and sodium chloride can play the effect that makes the coking puffing; On the other hand, the metal wall at boiler often is subjected to SO
3Dew point corrosion, additive for fire coal of the present invention can form with the sulfide sour gas effect in the fuel does not have active compound, plays the corrosion prevention effect.In addition, additive for fire coal consumption of the present invention is few, only be 2/10000ths to five of fuel, and nontoxic, tasteless, no burn into does not have explosion hazard, harmless, environmentally safe.
Embodiment
Embodiment 1 multifunctional coal-fired energy-saving additive and decoking are used
1. the preparation of multifunctional coal-fired energy-saving additive:
With commercially available saltpetre 10 weight %, cupric nitrate 7 weight %, magnesium nitrate 8 weight %, zinc 10 weight %, sodium chloride 25 weight %, sulfuric acid cave 15 weight %, aluminum nitrate 20 weight %, boric acid 5 weight % mix after pulverizing.
2. above-mentioned additive for fire coal is used for certain power station coal firing boiler.
In the boiler operatiopn, be spilled into or add to flame zone from the fire coal bucket by the boiler spy hole.Addition is about 2/10000ths of coal-fired weight, and coking, when slag is serious is for 5/10000ths of fuel added once in per 12 hours.
2.1 funnel temperature changes
Use above-mentioned additive for fire coal after 3 months, funnel temperature reduces about 14 ℃.In general, 10-15 ℃ of the every reduction of exhaust gas temperature, boiler efficiency can improve about 1%.
2.2 two stage superheater outlet cigarette temperature changes
Use above-mentioned additive for fire coal after 3 months, low 35-40 ℃ of two stage superheater outlet cigarette temperature drop.Two stage superheater outlet cigarette temperature descend explanation two stage superheater pipe group and before the caloric receptivity of heating surface (burner hearth, shielded) increase, heating surface coking constantly minimizing is the major cause that causes this variation.
2.3 boiler combustion stability
Boiler uses additive for fire coal after 3 months, and the coking degree reduces, and can't see big coke button substantially, thereby has avoided the generation of the boiler extinguishment accident that causes because of Jiao that falls effectively, has guaranteed unit safety, reliability service.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910147803 CN101649240B (en) | 2009-06-12 | 2009-06-12 | Multifunctional coal-fired energy-saving additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910147803 CN101649240B (en) | 2009-06-12 | 2009-06-12 | Multifunctional coal-fired energy-saving additive |
Publications (2)
| Publication Number | Publication Date |
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| CN101649240A true CN101649240A (en) | 2010-02-17 |
| CN101649240B CN101649240B (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910147803 Expired - Fee Related CN101649240B (en) | 2009-06-12 | 2009-06-12 | Multifunctional coal-fired energy-saving additive |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337170A (en) * | 2011-07-30 | 2012-02-01 | 湖南晟通科技集团有限公司 | Boiler clinker removal agent |
| CN102660350A (en) * | 2012-04-25 | 2012-09-12 | 邢岗 | Liquid state antiscorching agent for boiler |
| CN102786998A (en) * | 2012-07-24 | 2012-11-21 | 周丽琴 | Boiler coke preventing and eliminating agent |
| CN103409199A (en) * | 2013-08-22 | 2013-11-27 | 华北电力大学 | Biomass boiler anticorrosive agent, and preparation and application thereof |
| CN104327904A (en) * | 2014-10-30 | 2015-02-04 | 北京晟辉兴业科技有限公司 | Liquid boiler coking inhibitor |
| CN105779044A (en) * | 2016-04-08 | 2016-07-20 | 山东默锐环境产业股份有限公司 | Additive for preventing high-alkaline fuel from being contaminated and coked and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177628A (en) * | 1997-09-30 | 1998-04-01 | 覃戊文 | Energy-saving sweetening smoke-abatment agent |
| CN1234428A (en) * | 1999-04-21 | 1999-11-10 | 北京东方大华科技有限责任公司 | Coal companying additive and preparing method thereof |
| CN1629262A (en) * | 2003-12-17 | 2005-06-22 | 王家财 | Coal additive |
-
2009
- 2009-06-12 CN CN 200910147803 patent/CN101649240B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177628A (en) * | 1997-09-30 | 1998-04-01 | 覃戊文 | Energy-saving sweetening smoke-abatment agent |
| CN1234428A (en) * | 1999-04-21 | 1999-11-10 | 北京东方大华科技有限责任公司 | Coal companying additive and preparing method thereof |
| CN1629262A (en) * | 2003-12-17 | 2005-06-22 | 王家财 | Coal additive |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337170A (en) * | 2011-07-30 | 2012-02-01 | 湖南晟通科技集团有限公司 | Boiler clinker removal agent |
| CN102337170B (en) * | 2011-07-30 | 2016-01-20 | 晟通科技集团有限公司 | A kind of boiler decoking agent |
| CN102660350A (en) * | 2012-04-25 | 2012-09-12 | 邢岗 | Liquid state antiscorching agent for boiler |
| CN102786998A (en) * | 2012-07-24 | 2012-11-21 | 周丽琴 | Boiler coke preventing and eliminating agent |
| CN103409199A (en) * | 2013-08-22 | 2013-11-27 | 华北电力大学 | Biomass boiler anticorrosive agent, and preparation and application thereof |
| CN103409199B (en) * | 2013-08-22 | 2015-04-15 | 华北电力大学 | Biomass boiler anticorrosive agent, and preparation and application thereof |
| CN104327904A (en) * | 2014-10-30 | 2015-02-04 | 北京晟辉兴业科技有限公司 | Liquid boiler coking inhibitor |
| CN105779044A (en) * | 2016-04-08 | 2016-07-20 | 山东默锐环境产业股份有限公司 | Additive for preventing high-alkaline fuel from being contaminated and coked and preparation method and application thereof |
| CN105779044B (en) * | 2016-04-08 | 2017-10-17 | 山东默锐环境产业股份有限公司 | A kind of additive for preventing high-alkali fuel from staiing coking and preparation method and application |
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| Publication number | Publication date |
|---|---|
| CN101649240B (en) | 2013-12-18 |
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Granted publication date: 20131218 |