CN103254962A - Boiler coke restraining and removing agent - Google Patents
Boiler coke restraining and removing agent Download PDFInfo
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- CN103254962A CN103254962A CN2013101499510A CN201310149951A CN103254962A CN 103254962 A CN103254962 A CN 103254962A CN 2013101499510 A CN2013101499510 A CN 2013101499510A CN 201310149951 A CN201310149951 A CN 201310149951A CN 103254962 A CN103254962 A CN 103254962A
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Abstract
The invention relates to a boiler coke restraining and removing agent capable of reducing and removing coal-fired boiler coke blocks. The boiler coke restraining and removing agent comprises the following components in percentage by weight: 5%-15% of swelling agent, 0.1%-5% of high-temperature retaining agent, and 1%-5% of oxidant. The swelling agent nitrate can penetrate into the coke, so that oxygen gas can be released inside the coke blocks to promote the carbon deposition layers inside the coke blocks to combust and promote the coke blocks to loosen; the high-temperature retaining agent can be retained in a furnace within a long time, so that on the one hand, the formation of bonded cokes is blocked, and on the other hand, the bonded cokes are gradually loosened and drop; the oxidant can be used for oxidizing ferrous oxide in the coal ash, improving the smelting point of combustion products, improving a crystallization process of solid particles, and effectively relieving coking and contaminating of the fused combustion products in a furnace chamber and a heated surface.
Description
Technical field
The present invention relates to a kind of press down burnt, decoking agent, relate in particular to a kind of boiler for minimizing and removing coal firing boiler coke button and press down burnt, decoking agent.
Background technology
Coal firing boiler is in the fired coal combustion process, and the mineral substance in the coal has formed coal ash.Coal firing boiler is owing to temperature of combustion height, ash fusion point are low, and the coal ash of fusion and semi-melting state can deposit, be bonded on the boiler surface with the form of coking, contamination usually.And coking is in case form, and can cause, reheat steam temperature raises, and the coking meeting reduces boiler output, causes the work-ing life of being forced to blowing out and shortening boiler plant when serious; Coking easily becomes the lime-ash bulk, makes dragveyer, slag crusher transportation difficulty, makes the slag runner blocking when serious, can only move by load down; Underload can cause unstable combustion even flame-out because falling big lump coke; If coking because gravity falls from top, causes smashing the furnace hopper water wall when fusing into bulk; If when causing the whole coking of water wall, have only blowing out to carry out artificial coke cleaning, directly influence security, economy and the reliability of boiler operatiopn.
The chemistry decoking agent is industrial method commonly used, and present chemical decoking agent mainly contains solid-state version and liquid-type two big classes.Solid-state version decoking agent addition is generally more than 5/1000ths of Coal-fired capacity, and cost is higher.Liquid-type decoking agent addition is little, and cost is lower, sprays into advantage such as no dead angle behind the burner hearth; Comprehensive decoking agent patent analyses at present, decoking agent decoking effect is better at present, presses down burnt DeGrain.
The formation of components of coal ash is to influence the coal ash melting characteristic, causes the basic factor of the serious slagging scorification of boiler, contamination.Developing the boiler that a kind ofly can directly fundamentally change the coal ash slagging scorification, stain characteristic, to press down burnt, decoking agent be that the coal firing boiler industry is badly in need of.
Summary of the invention
Technical problem to be solved by this invention provide a kind of can improve ash fusion point, cost low, press down the boiler burnt, that decoking is effective and press down burnt, decoking agent.
In order to address the above problem, technical scheme provided by the present invention is:
A kind of boiler presses down burnt, decoking agent, and described boiler presses down, and component and weight percent burnt, decoking agent are: swelling agent 5 ~ 15, and high temperature is detained agent 0.1 ~ 5, oxygenant 1 ~ 5, surplus is water.
Optionally, each percentages of ingredients of described decoking agent is: swelling agent 8 ~ 12, and high temperature is detained agent 0.5 ~ 2, oxygenant 1 ~ 3, surplus is water.
Optionally, described swelling agent comprises cupric nitrate, saltpetre, magnesium nitrate, ammonium nitrate, at least a in the aluminum nitrate.
Optionally, described high temperature is detained agent and comprises at least a in boric acid, the borax.
Optionally, described oxygenant comprises potassium permanganate, at least a in the hydrogen peroxide.
Among the present invention, swelling agent nitrate porous at the inner oxygen that discharges of coke button, promotes the burning of coke button inner product carbon-coating to burnt inner, promotes coke button loose simultaneously; High temperature is detained agent and can be detained the long period in the stove, stops the formation of coking on the one hand, on the other hand, can be adsorbed on and infiltrate burnt layer on the furnace wall, makes coking loose coming off gradually; Mainly formed by iron protoxide, silicon-dioxide etc. in the low melting point coal ash, and iron protoxide and silicon-dioxide form the very low eutectic of fusing point easily, can make fusion point of ash reduce by 100 to 150 ℃, and the present invention only need add more a spot of oxygenant, with regard to the iron protoxide in the energy oxidation coal ash, form dystectic ferric oxide, directly improve the products of combustion fusing point, improve the crystallisation process of solid particulate, effectively alleviate in the process combustion, the products of combustion of fusion is in coking, the contamination of burner hearth, heating surface.
The present invention possesses following advantage: 1, dosage is few, press down burnt, decoking agent consumption and only be 100,000 of coal quantity/; 2, easy to use, need not boiler is carried out any transformation, during use this boiler is pressed down Jiao, decoking agent by special-purpose medicine machine, utilize pressurized air to spray into burner hearth from the boiler peephole and get final product; 3, can reach simultaneously decoking, press down burnt effect; 4, safety economy, this decoking agent is nontoxic, the nothing corrosion, and raw material is cheap and easy to get.
Embodiment
For clear more elaboration technology contents of the present invention; described in detail in conjunction with specific embodiments at this; obviously; cited embodiment is the preferred embodiment of the technical program, and those skilled in the art can still belong to protection scope of the present invention according to the other technologies scheme that disclosed technology contents draws apparently.
Embodiment 1
Each component and weight percent thereof are in the present embodiment: oxygenant 1, and swelling agent 15, high temperature is detained agent 2, water 82.
This product was tried out two months in certain 300MW Subcritical Utility Boiler, and each peephole coking thickness of boiler is lower than 30cm, and ash fusion point improves 50 ℃, and duration of test falls big coke block once.
Embodiment 2
Each component and weight percent thereof are in the present embodiment: oxygenant 2, and swelling agent 10, high temperature is detained agent 5, water 83.
This product was tried out two months in certain 300MW Subcritical Utility Boiler, and each peephole coking thickness of boiler is lower than 25cm, and ash fusion point improves 100 ℃, the big coke block phenomenon do not occur falling.
Embodiment 3
Each component and weight percent thereof are in the present embodiment: oxygenant 3, and swelling agent 8, high temperature is detained agent 5, water 84.
This product was tried out two months in certain 300MW Subcritical Utility Boiler, and each peephole coking thickness of boiler is lower than 25cm, and ash fusion point improves 80 ℃, the big coke block phenomenon do not occur falling.
Embodiment 4
Each component and weight percent thereof are in the present embodiment: oxygenant 4, and swelling agent 10, high temperature is detained agent 4, water 82.
This product was tried out two months in certain 300MW Subcritical Utility Boiler, and each peephole coking thickness of boiler is lower than 20cm, and ash fusion point improves 120 ℃, the big coke block phenomenon do not occur falling.
Embodiment 5
Each component and weight percent thereof are in the present embodiment: oxygenant 5, and swelling agent 12, high temperature is detained agent 2, water 81.
This product was tried out two months in certain 300MW Subcritical Utility Boiler, and each peephole coking thickness of boiler is lower than 15cm, and ash fusion point improves 100 ℃, the big coke block phenomenon do not occur falling.
Embodiment 6
Each component and weight percent thereof are in the present embodiment: oxygenant 3, and swelling agent 12, high temperature is detained agent 5, water 80.
This product was tried out two months in certain 300MW Subcritical Utility Boiler, and each peephole coking thickness of boiler is lower than 15cm, and ash fusion point improves 120 ℃, the big coke block phenomenon do not occur falling.
Boiler described in the embodiment 1 ~ 6 presses down, and preparation method burnt, decoking agent is: after the component outside will dewatering mixes by the weight percent among the embodiment, be dissolved in the aqueous solvent and get final product.
Claims (5)
1. a boiler presses down burnt, decoking agent, it is characterized in that, described boiler presses down, and component and weight percent burnt, decoking agent are: swelling agent 5 ~ 15, and high temperature is detained agent 0.1 ~ 5, oxygenant 1 ~ 5, surplus is water.
2. a kind of boiler according to claim 1 presses down burnt, decoking agent, it is characterized in that: described boiler presses down each percentages of ingredients burnt, decoking agent and is: swelling agent 8 ~ 12, and high temperature is detained agent 0.5 ~ 2, oxygenant 1 ~ 3, surplus is water.
3. a kind of boiler according to claim 1 and 2 presses down burnt, decoking agent, and it is characterized in that: described swelling agent comprises cupric nitrate, saltpetre, magnesium nitrate, ammonium nitrate, at least a in the aluminum nitrate.
4. a kind of boiler according to claim 1 and 2 presses down burnt, decoking agent, it is characterized in that: described high temperature is detained agent and comprises at least a in boric acid, the borax.
5. a kind of boiler according to claim 1 and 2 presses down burnt, decoking agent, and it is characterized in that: described oxygenant comprises potassium permanganate, at least a in the hydrogen peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101499510A CN103254962A (en) | 2013-04-27 | 2013-04-27 | Boiler coke restraining and removing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101499510A CN103254962A (en) | 2013-04-27 | 2013-04-27 | Boiler coke restraining and removing agent |
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| CN103254962A true CN103254962A (en) | 2013-08-21 |
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| CN2013101499510A Pending CN103254962A (en) | 2013-04-27 | 2013-04-27 | Boiler coke restraining and removing agent |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164270A (en) * | 2014-07-24 | 2014-11-26 | 浙江百能科技有限公司 | Additive for improving Zhundong coal combustion and coking characteristics and use method thereof |
| CN104312656A (en) * | 2014-07-25 | 2015-01-28 | 王天云 | A decoking coal-saving agent and a using method 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 |
| CN104789293A (en) * | 2015-03-25 | 2015-07-22 | 天津神侬环保科技有限公司 | Coal combustion catalyzing and coal-saving agent and preparation method thereof |
| CN106065346A (en) * | 2016-05-26 | 2016-11-02 | 台山市合利生物质科技有限公司 | A kind of decoking cleaning boiler wall biological granular fuel and preparation method thereof |
| CN107418614A (en) * | 2017-07-24 | 2017-12-01 | 天津大学 | Online decoking method for hydrocarbon fuel tubular cracking furnace |
| CN112358904A (en) * | 2020-09-22 | 2021-02-12 | 中节能（秦皇岛）环保能源有限公司 | In-furnace decoking anticorrosive agent and preparation and use method thereof |
| CN112779072A (en) * | 2021-01-15 | 2021-05-11 | 廊坊亿泰化工建材有限公司 | Decoking agent and preparation method thereof |
| CN114410363A (en) * | 2021-12-31 | 2022-04-29 | 上海丰信环保科技有限公司 | Broad-spectrum liquid decoking agent and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487262A (en) * | 2003-06-27 | 2004-04-07 | 琦 戴 | Boiler coke eliminating agent |
| CN102337169A (en) * | 2010-07-16 | 2012-02-01 | 甘肃黑马石化工程有限公司 | Multicomponent slag-removing and ash-cleaning energy saving composition for boilers and preparation technology thereof |
| CN102851100A (en) * | 2011-07-01 | 2013-01-02 | 湖南晟通科技集团有限公司 | Boiler decoking agent |
-
2013
- 2013-04-27 CN CN2013101499510A patent/CN103254962A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487262A (en) * | 2003-06-27 | 2004-04-07 | 琦 戴 | Boiler coke eliminating agent |
| CN102337169A (en) * | 2010-07-16 | 2012-02-01 | 甘肃黑马石化工程有限公司 | Multicomponent slag-removing and ash-cleaning energy saving composition for boilers and preparation technology thereof |
| CN102851100A (en) * | 2011-07-01 | 2013-01-02 | 湖南晟通科技集团有限公司 | Boiler decoking agent |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164270A (en) * | 2014-07-24 | 2014-11-26 | 浙江百能科技有限公司 | Additive for improving Zhundong coal combustion and coking characteristics and use method thereof |
| CN104312656A (en) * | 2014-07-25 | 2015-01-28 | 王天云 | A decoking coal-saving agent and a using method 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 |
| CN104789293A (en) * | 2015-03-25 | 2015-07-22 | 天津神侬环保科技有限公司 | Coal combustion catalyzing and coal-saving agent and preparation method thereof |
| CN106065346A (en) * | 2016-05-26 | 2016-11-02 | 台山市合利生物质科技有限公司 | A kind of decoking cleaning boiler wall biological granular fuel and preparation method thereof |
| CN107418614A (en) * | 2017-07-24 | 2017-12-01 | 天津大学 | Online decoking method for hydrocarbon fuel tubular cracking furnace |
| CN112358904A (en) * | 2020-09-22 | 2021-02-12 | 中节能（秦皇岛）环保能源有限公司 | In-furnace decoking anticorrosive agent and preparation and use method thereof |
| CN112779072A (en) * | 2021-01-15 | 2021-05-11 | 廊坊亿泰化工建材有限公司 | Decoking agent and preparation method thereof |
| CN114410363A (en) * | 2021-12-31 | 2022-04-29 | 上海丰信环保科技有限公司 | Broad-spectrum liquid decoking agent and preparation method and application thereof |
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Application publication date: 20130821 |