CN108865324A - One kind proposing molten antiscorching and preparation method thereof and application method - Google Patents
One kind proposing molten antiscorching and preparation method thereof and application method Download PDFInfo
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- CN108865324A CN108865324A CN201810894197.6A CN201810894197A CN108865324A CN 108865324 A CN108865324 A CN 108865324A CN 201810894197 A CN201810894197 A CN 201810894197A CN 108865324 A CN108865324 A CN 108865324A
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- Prior art keywords
- antiscorching
- molten
- alkalinity
- high temperature
- sodium percarbonate
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/06—Use of additives to fuels or fires for particular purposes for facilitating soot removal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Incineration Of Waste (AREA)
Abstract
The present invention relates to anti-burnt additive technology fields, disclose one kind and propose molten antiscorching and preparation method thereof and application method, the burning antiscorching is made of following raw material in terms of mass percentage：Alkalinity useless mud 30-40%, calcium oxide 5-12%, high temperature sand 30-45%, aluminium oxide 8-15%, SODIUM PERCARBONATE 8-15%.Boiler antiscorching provided by the invention gives up mud using waterglass alkalinity as primary raw material, improves ash fusion point, prevents the formation of coking；It does not influence the combustion characteristics of fuel and the normal operation of boiler, does not need to be transformed existing combustion apparatus yet, greatly reduce cost of investment using simply.
Description
Technical field
The invention belongs to anti-burnt additive technology fields, and in particular to one kind mentions molten antiscorching and preparation method thereof and uses
Method.
Background technique
Coking is that the impurity in fuel does not have completely burned, is attached to coal-burning boiler tube wall, economizer and air preheater
On, it causes to corrode and reduces heat exchanger effectiveness.Molten antiscorching is mentioned mainly by mixing with fuel, can be improved ash fusion point, be prevented
Generate coking in fuel combustion process, on the other hand make the coke button pineization generated and completely burned, eventually form light ash by
Flue discharge.
It mainly include two classes in existing boiler decoking agent：One kind is oxidized form coke-removing agent, its working principle is that improving burnt
The fusing point of layer eutectic, is allowed to second-time burning, makes focus layer pineization, another kind of is salt form coke-removing agent（Nitrate aqueous solution）, such
Coke-removing agent sees that burner sprays by drug spraying equipment, enters burner hearth with flue gas stream, reacts with coking layer, reaches the effect of decoking
Fruit, but these two types of coke-removing agents can not prevent the generation of focus layer；In the prior art, by the way that combustion adjuvant mantoquita, coke-removing agent is added
Active metal powder includes aluminium powder, zinc powder, magnesium powder and high-melting-point substances magnesia, calcium oxide, aluminium oxide, reaches the anti-coke of decoking
Effect, but use active metal powder be used as raw material, it is at high cost, for large-scale burning boiler use, production cost can be increased.
In conclusion existing anti-burnt additive, part is only able to achieve decoking effect, and can reach the raw material for devoking anti-coke
It is at high cost.
Summary of the invention
In response to the deficiencies in the existing technology, that the present invention provides a kind of raw materials is cheap and easy to get, dosage is few, peace easy to use
Entirely, while can reach anti-burnt effect well mentions molten antiscorching.Wherein, the useless mud of alkalinity is the filter residue produced on wet process waterglass,
Its direct outlet can cause serious influence to environment, belong to waste material utilization.
To solve the above-mentioned problems, scheme provided by the present invention is：
One kind mentioning molten antiscorching, which is characterized in that in terms of mass percentage, is made of following raw material：The useless mud 30-40% of alkalinity,
Calcium oxide 5-12%, high temperature sand 30-45%, aluminium oxide 8-15%, SODIUM PERCARBONATE 8-15%.
Preferably, the mass percent for mentioning molten antiscorching is：The useless mud 30-35% of alkalinity, calcium oxide 8-10%, high temperature are husky
38-45%, aluminium oxide 8-12%, SODIUM PERCARBONATE 8-12%.
The aluminium oxide can be replaced with bauxite.
The preparation method for mentioning molten antiscorching, the specific steps are that：The useless mud of alkalinity and calcium oxide are mixed solid
Change, is then crushed；The smashed material and high temperature sand, aluminium oxide, SODIUM PERCARBONATE, which are stirred, to be uniformly mixed to obtain the final product.
The partial size of the smashed material is 70-90 mesh.
The application method for mentioning molten antiscorching, which is characterized in that the specific steps are：According to accounting for water-coal-slurry gross mass
The ratio of 0.75%-1%, which is added to be uniformly mixed in water-coal-slurry, forms mixture, and coal stove adjusts air inducing, and feed the mixture into
Burner hearth high-temperature region.
Beneficial effects of the present invention：
（1）Energy saving effect：SODIUM PERCARBONATE in the present invention in raw material has good oxygen supply, oxygenation during fired coal combustion
Suspension carbon granules, fuel gas full combustion so that boiler slag carbon content and fly ash combustible material be made to reduce, can be improved burning by effect
Efficiency.
（2）Desulfurization subtracts dirt：Calcium oxide is capable of fixing the sulphur content in coal, generates solid sulfide and excludes with clinker, thus greatly
The big discharge for reducing sulfur dioxide.
（3）Anti- burnt decoking：On the one hand the formation for preventing coking, on the other hand can be adsorbed on furnace and penetrate into focus layer, make
Coking is gradually loose to fall off, and greatly improves the heat conduction efficiency of boiler, exhaust gas temperature is made to decrease, maintain the peace of stove
Full economical operation.
Specific embodiment
In order to more fairly set out technology contents of the invention, it is described in detail in conjunction with specific embodiments herein, it is clear that
Cited embodiment is the preferred embodiment of the technical program, and those skilled in the art can be according to disclosed skill
The other technologies scheme that art content is apparent from still falls within protection scope of the present invention.
Embodiment 1：
One kind mentioning molten antiscorching, and ingredient and mass percent are：Alkalinity useless mud 32%, calcium oxide 8%, high temperature sand 40%, aluminium oxide
10%, SODIUM PERCARBONATE 10%.Solidification first is mixed in the useless mud of alkalinity and calcium oxide, then carry out crushing and with high temperature is husky, oxidation
Aluminium, SODIUM PERCARBONATE are stirred to be uniformly mixed mentions molten antiscorching to obtain the final product.
It mentions molten antiscorching by above-mentioned and is mixed with water-coal-slurry, the additive amount of antiscorching is the 1% of water-coal-slurry quality, and coal stove is adjusted
Air inducing, and feed the mixture into burner hearth high-temperature region.
Embodiment 2
The present embodiment and the difference of embodiment 1 are：The ingredient and mass percent for mentioning molten antiscorching be：The useless mud of alkalinity
36%, calcium oxide 10%, high temperature sand 38%, aluminium oxide 8%, SODIUM PERCARBONATE 8%.Other are same as Example 1.
Embodiment 3
The present embodiment and the difference of embodiment 1 are：The ingredient and mass percent for mentioning molten antiscorching be：The useless mud of alkalinity
30%, calcium oxide 6%, high temperature sand 35%, aluminium oxide 11%, SODIUM PERCARBONATE 12%.Other are same as Example 1.
Embodiment 4
The present embodiment and the difference of embodiment 1 are：The ingredient and mass percent for mentioning molten antiscorching be：The useless mud of alkalinity
26%, calcium oxide 5%, high temperature sand 45%, aluminium oxide 14%, SODIUM PERCARBONATE 10%.Other are same as Example 1.
Embodiment 5
The present embodiment and the difference of embodiment 1 are：Aluminium oxide is substituted for bauxite.Other are same as Example 1.
Embodiment 6
The present embodiment and the difference of embodiment 1 are：Mention molten antiscorching additive amount be water-coal-slurry 0.85%, it is other with it is real
It is identical to apply example 1.
Embodiment 7
The present embodiment and the difference of embodiment 1 are：The additive amount for mentioning molten antiscorching is the 0.75% of water-coal-slurry, other and implementation
Example 1 is identical.
Comparative example 1
The present embodiment and the difference of embodiment 1 are：The additive amount for mentioning molten antiscorching is the 0.50% of water-coal-slurry, other and implementation
Example 1 is identical.
Embodiment 1-7 observes the coking situation of boiler wall, wherein embodiment with after 1 fuel combination full combustion of comparative example
1, substantially without coking appearance, anti-coking works well for the furnace wall of embodiment 2, embodiment 5, embodiment 6, embodiment 7, and in reality
It applies on the furnace wall of example 3 and embodiment 4 there are a small amount of coking, illustrates that the useless mud of alkalinity and calcium oxide have this antiscorching system
Stronger synergistic effect；Have focus layer appearance on the furnace wall of comparative example 1, illustrate this mention the additive amount of molten antiscorching it is less when, to combustion
The antiscorching of coal cannot play good effect.In addition, measuring the residue of each embodiment and comparative example with ash fusion point determination meter
Softening temperature, the ash fusion point of residue, specific data such as Tables 1 and 2 are indicated with it.As shown in Table 1, in embodiment 1 and in fact
It applies in example 4, in high temperature sand and the higher antiscorching system of alumina content, ash fusion point increases about 90 DEG C, and in 2 He of embodiment
Implement in 3, the content of the two is relatively low, and ash fusion point only increases about 70 DEG C, and aluminium oxide is substituted for aluminium alum in embodiment 5
Soil, ash fusion point can still increase 88 DEG C, illustrate in practical applications, to consider the problems of cost, can replace oxygen with bauxite
Change aluminium.As shown in Table 2, the ash fusion point of embodiment 1,6,7 increases about 90 DEG C, and the ash fusion point of comparative example 1 increases about 30 DEG C,
The additive amount of antiscorching has large effect to the promotion of ash fusion point.In conclusion this mentions each component of molten antiscorching right
Coal-fired anti-coke has stronger synergistic effect, different with the anti-burnt effect of the antiscorching of different proportion preparations, additive amount
Size also will affect anti-burnt effect.
Table 1
Table 2
Claims (6)
1. one kind mentions molten antiscorching, which is characterized in that in terms of mass percentage, be made of following raw material：The useless mud 25- of alkalinity
40%, calcium oxide 5-12%, high temperature sand 30-45%, aluminium oxide 8-15%, SODIUM PERCARBONATE 8-15%.
2. according to claim 1 mention molten antiscorching, which is characterized in that in terms of mass percentage, by following raw material group
At：Alkalinity useless mud 30-35%, calcium oxide 8-10%, high temperature sand 38-45%, aluminium oxide 8-12%, SODIUM PERCARBONATE 8-12%.
3. according to claim 1 mention molten antiscorching, which is characterized in that in terms of mass percentage, by following raw material group
At：Alkalinity useless mud 32%, calcium oxide 8%, high temperature sand 40%, aluminium oxide 10%, SODIUM PERCARBONATE 10%.
4. a kind of preparation method a method according to any one of claims 1-3 for mentioning molten antiscorching, which is characterized in that the specific steps are：
The useless mud of alkalinity and calcium oxide are mixed and are solidified, is then crushed；The smashed material and high temperature sand, aluminium oxide,
SODIUM PERCARBONATE, which is stirred, to be uniformly mixed to obtain the final product.
5. the preparation method according to claim 4 for mentioning molten antiscorching, which is characterized in that the grain of the smashed material
Diameter is 70-90 mesh.
6. the application method of molten antiscorching is proposed described in -3 according to claim 1, which is characterized in that the specific steps are：It will mention
Molten antiscorching, which is added to be uniformly mixed in water-coal-slurry according to the ratio for accounting for water-coal-slurry gross mass 0.75%-1%, forms mixture；Institute
Mixture is stated to be added after coal stove adjusts air inducing to burner hearth high-temperature region.
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| CN201810894197.6A CN108865324A (en) | 2018-08-08 | 2018-08-08 | One kind proposing molten antiscorching and preparation method thereof and application method |
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| CN201810894197.6A CN108865324A (en) | 2018-08-08 | 2018-08-08 | One kind proposing molten antiscorching and preparation method thereof and application method |
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| CN102776051A (en) * | 2012-08-27 | 2012-11-14 | 湖南省鑫旺节能环保科技有限公司 | Efficient and environment-friendly coal additive and preparation method thereof |
| CN103013617A (en) * | 2013-01-08 | 2013-04-03 | 华北电力大学 | Industrial residue boiler anti-coking agent and application method thereof |
| CN103232876A (en) * | 2013-05-27 | 2013-08-07 | 深圳市明灯科技有限公司 | Boiler coking inhibitor |
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| CN104745270A (en) * | 2013-12-25 | 2015-07-01 | 吴旭 | Anti-coking energy-saving agent for coal-fired boiler |
| CN105199805A (en) * | 2015-09-14 | 2015-12-30 | 镇江华立煤质制样设备有限公司 | Coal additive for reducing smoke dust discharging quantity |
| CN108359512A (en) * | 2018-04-02 | 2018-08-03 | 国网新疆电力有限公司电力科学研究院 | Alleviate the additive and preparation and application of the quasi- high-alkali coal coking property in east in Xinjiang |
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2018
- 2018-08-08 CN CN201810894197.6A patent/CN108865324A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766074A (en) * | 2005-11-01 | 2006-05-03 | 海城正大环保节能材料有限公司 | Formulation and preparation method of desulfurization agent for assisting combustion of fire coal |
| CN102776051A (en) * | 2012-08-27 | 2012-11-14 | 湖南省鑫旺节能环保科技有限公司 | Efficient and environment-friendly coal additive and preparation method thereof |
| CN103013617A (en) * | 2013-01-08 | 2013-04-03 | 华北电力大学 | Industrial residue boiler anti-coking agent and application method thereof |
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| CN104745270A (en) * | 2013-12-25 | 2015-07-01 | 吴旭 | Anti-coking energy-saving agent for coal-fired boiler |
| CN105199805A (en) * | 2015-09-14 | 2015-12-30 | 镇江华立煤质制样设备有限公司 | Coal additive for reducing smoke dust discharging quantity |
| CN108359512A (en) * | 2018-04-02 | 2018-08-03 | 国网新疆电力有限公司电力科学研究院 | Alleviate the additive and preparation and application of the quasi- high-alkali coal coking property in east in Xinjiang |
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Application publication date: 20181123 |
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