CN102504895A - Liquid coal slurry composition - Google Patents
Liquid coal slurry composition Download PDFInfo
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- CN102504895A CN102504895A CN201110334822XA CN201110334822A CN102504895A CN 102504895 A CN102504895 A CN 102504895A CN 201110334822X A CN201110334822X A CN 201110334822XA CN 201110334822 A CN201110334822 A CN 201110334822A CN 102504895 A CN102504895 A CN 102504895A
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- liquid
- coal
- paste composition
- additive
- coal paste
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Abstract
The invention relates to a liquid coal slurry composition, which comprises (1) a coal material, (2) liquid used for dissolving the coal material, (3) an additive and (4) a dispersing agent used for evenly dispersing the coal material and the additive in the liquid, wherein the additive is a material containing silicon dioxide (SiO2) and aluminum oxide (Al2O3). Therefore, a high ash melting point of the liquid coal slurry composition can be provided, slag formation during burning is reduced, and conventional coal water slurry is replaced.
Description
Technical field
The present invention is a kind of liquid coal paste composition, is about a kind of liquid coal paste composition that possesses high grey fluxing point especially, and the formation of slag when it can reduce burning reduces the work-ing life that the operating personnel clears up the frequency and the prolonged boiler of boiler.
Background technology
In recent years, along with the former material price in the world constantly hurricane rise, the cost of heavy oil also constantly rises, and forces most boiler combustion dealer to use cheap coal water slurry one after another instead and replaces heavy oil and act as a fuel.
Serve as reasons about 60 to 70% coal materials, about 30 to 40% water and trace of well known ground, coal water slurry is used for the dispersant of homodisperse coal material in water and makes.During burning, the heat that average per kilogram coal water slurry produces is about 4,200 to 4,800 kilocalories, and in other words, average about two tonnes coal water slurry can replace one tonne heavy oil.In addition, the temperature of combustion of coal water slurry is hanged down about 100 to 200 ℃ than the temperature of combustion of heavy oil, sulfurous gas and oxynitride (NO in the time of can reducing burning significantly
X) discharging, reduce environmental pollution.
Except above-mentioned reduce when burning sulfurous gas and the advantage of discharged nitrous oxides; Other discharge index of coal water slurry all can meet the regulation of various countries' environment protection; For instance: smoke dust discharge concentration is less than the 200mg/m3 of China's Mainland regulation, and blackness of exhaustion is 0-0.5 level (blackness of exhaustion of China's Mainland required standard must be lower than 1 grade).But, can form slag in boiler during the thought cool water mixture burning, make the boiler combustion dealer quite perplex.The formation of slag except cause efficiency of combustion low; Receive thermal conduction inhomogeneous and blast etc. unexpected in the time of also possibly causing boiler combustion; Therefore the operating personnel often the cleaning boiler avoid accidents, cause personnel's the meaningless wastes of resource such as puzzlement and manpower, money.On the other hand, the formation of slag also possibly cause reduce the work-ing life of boiler, so the frequent boiler of changing of boiler dealer palpus, causes the money dead wight loss.
Point out that according to research the formation main reason of slag is during cool water mixture burning: during (1) burning, it is not good that coal water slurry produces atomizing effect, causes incomplete combustion, causes coal water slurry rapid drying and coking, and form slag; (2) temperature of combustion of coal water slurry is higher than grey fluxing point, and most coal water slurry present molten state already and attach to boiler before reaching temperature of combustion, and forms slag.Point out further that according to research the former reason can see through the coal material amount of improving coal water slurry and obtain improvement with the burning atomizing effect; So, the latter's reason then must see through the grey fluxing point that improves coal water slurry, just can be improved.But for the boiler dealer, seeking a kind of scheme that improves the grey fluxing point of coal water slurry is a big problem really.
Be with, the grey fluxing point that how to improve coal water slurry is personage's urgent problem of technical field of the present invention really, the problem that also solves for institute of the present invention desire.
Summary of the invention
A purpose of the present invention is to provide a kind of liquid coal paste composition, and it has high grey fluxing point, the formation of slag when being minimized burning.
Another object of the present invention is to provide a kind of liquid coal paste composition, the coal water slurry that its instead is commonly used, heavy oil are as the fuel of boiler combustion.
In order to realize above-mentioned these or other purpose, liquid coal paste composition of the present invention is to comprise:
(1) coal material;
(2) liquid is in order to dissolve this coal material;
(3) additive is for containing silicon-dioxide (SiO
2) and aluminium sesquioxide (Al
2O
3) material; And
(4) dispersion agent is in order to disperse this coal material and this additive equably in this liquid.
By the present invention; When this liquid coal paste composition burning; Silicon-dioxide in this additive and aluminium sesquioxide can adsorb the concurrent biochemical reaction of basic metal material (as: sodium ion, potassium ion) that this liquid coal paste composition receives vaporization at high temperature, form solid-state alkali cpd; So, represent explanation about aforementioned chemical reaction system such as following reaction formula:
Al
2O
3+2SiO
2+2KCl+H
2O→2KAlSiO
4+2HCl
Al
2O
3+4SiO
2+2KCl+H
2O→2KAlSi
2O
6+2HCl。Then, utilize and to blow ash and can remove aforementioned solid-state alkali cpd.By this; Can avoid this basic metal material that receives vaporization at high temperature and other material to react and form the alkali cpd of molten state; And then provide this liquid coal paste composition high grey fluxing point, and be unlikely and present molten state before reaching temperature of combustion, attach to boiler and form slag.
Embodiment
Liquid coal paste composition of the present invention is to be higher than its grey fluxing point according to the temperature of combustion of commonly using coal water slurry, makes to be prone to form slag when commonly using cool water mixture burning, and the improvement of proposition.
Be that it comprises with, liquid coal paste composition of the present invention:
(1) coal material;
(2) liquid is in order to dissolve this coal material;
(3) additive is for containing the material of silicon-dioxide and aluminium sesquioxide; And
(4) dispersion agent is in order to disperse this coal material and this additive equably in this liquid.
According to notion of the present invention, aforementioned coal material is can buy certainly on the market, and can grind to form the coal dust with appropriate mesh (mesh) according to actual demand.In addition, the personage according to technical field of the present invention knows that this coal material system classifies with producing country, can be divided into Australia coal, CHINESE COAL, u.s. coal and Indonesia's coal etc.In some embodiment, in the weight of this liquid coal paste composition, the weight percent of this coal material is 55-65%.
According to notion of the present invention, this liquid system can be the liquid of water, calorific value or these combination.In addition, the liquid system of aforementioned calorific value can be taken from waste water; Wherein, This waste water system is according to the definition of TaiWan, China Law on the Prevention and Treatment of Water Pollution second; Mean " cause in manufacturing, operation, natural resources exploitation process or operating environment produce the water that contains pollutent ", for example trade effluent, agricultural effluent reach the purpose of resource reutilization by this.Preferably, aforementioned calorific value is to be 50-2000kcal/kg.In some embodiment, in the weight of this liquid coal paste composition, the weight percent of this liquid is 32.8-42.8%.
According to notion of the present invention, this additive system can be selected from the mineral group that is made up of Muscovitum, kaolin, bauxitic clay, dickite, dust falling rocks, nacrite and molecular sieve; Preferably, this additive system is kaolin.In some embodiment, in the weight of this liquid coal paste composition, the weight percent of this additive is 2-8%.
What be worth explanation is; The liquid coal paste composition of the present invention in case burn; This coal material receives can volatilize the basic metal material behind the high temperature; This evaporable basic metal material can by the silicon-dioxide in this additive and aluminium sesquioxide adsorbs and the generation chemical reaction, forms solid-state alkali cpd, causes this evaporable basic metal material to react with other material and forms the alkali cpd of molten state.Therefore, provide liquid coal paste composition of the present invention high grey fluxing point, before reaching temperature of combustion, can not present molten state and attach to boiler formation slag.
According to notion of the present invention, this dispersion agent system can be the dispersion agent of naphthene sulfonic acid (Naphthalenesulfonic acid) series.In some embodiment, in the weight of this liquid coal paste composition, the weight percent of this dispersion agent is 0.2-0.8%.
In order to let the juror more easily understand content of the present invention, specially lift embodiment about liquid coal paste composition of the present invention now with explanation.
Embodiment 1
The manufacturing processed of present embodiment is to be described below:
At first, get the coal material of Australia coal, and this Australia coal grinding is become coal dust as present embodiment.Then, the dispersion agent that mixes the naphthene sulfonic acid that this coal dust and model are ZDFS-798 (Naphthalenesulfonic acid) series.Then, with the dispersion agent of this mixed coal dust and naphthene sulfonic acid series insert one water and trade effluent be housed the agitating ball mill uniform mixing, the calorific value of this trade effluent is about 170kcal/kg.At last, add the liquid behind kaolin to the uniform mixing again, just obtain the liquid coal paste composition of present embodiment.Wherein, in the weight of the liquid coal paste composition of present embodiment, dispersion agent, water, trade effluent, the kaolinic weight percent of the coal dust of present embodiment, naphthene sulfonic acid series are respectively: 57.2%, 0.8%, 16.5%, 23.5%, 2%.
Embodiment 2
The manufacturing processed of present embodiment is similar with the manufacturing processed of previous embodiment 1; Thought is in the weight of the liquid coal paste composition of present embodiment, and dispersion agent, water, trade effluent, the kaolinic weight percent of the coal dust of present embodiment, naphthene sulfonic acid series are respectively: 57.2%, 0.8%, 16%, 22%, 4%.
Embodiment 3
The manufacturing processed of present embodiment is similar with the manufacturing processed of previous embodiment 1; Thought is in the weight of the liquid coal paste composition of present embodiment, and dispersion agent, water, trade effluent, the kaolinic weight percent of the coal dust of present embodiment, naphthene sulfonic acid series are respectively: 60.2%, 0.8%, 13%, 20%, 6%.
Comparative example
The manufacturing processed of this comparative example is similar with the manufacturing processed of previous embodiment 1; Thought is in the weight of the liquid coal paste composition of this comparative example, and dispersion agent, water, trade effluent, the kaolinic weight percent of the coal dust of this comparative example, naphthene sulfonic acid series are respectively: 59.2%, 0.8%, 15%, 25%, 0%.
Grey fluxing point for the liquid coal paste composition of understanding above-mentioned these embodiment and comparative example; Utilize and measure grey fusion determinator (intelligent ash fusion tester; Model: 5E-AFIII) measure, also can record texturing temperature, softening temperature, hemispherical temperature, the yield temperature of the liquid coal paste composition of above-mentioned these embodiment and comparative example.What be worth explanation is that according to the regulation in Europe, softening temperature is for judging the foundation of grey fluxing point; According to the regulation of China's Mainland, hemispherical temperature is for judging the foundation of grey fluxing point.Therefore, according to shown in the table 1, the liquid coal paste composition of above-mentioned these embodiment has the grey fluxing point of the liquid coal paste composition that is higher than comparative example.
Table 1
Apparently, according to the description among the top embodiment, the present invention has many corrections and difference.Therefore need in the scope of its additional claim item, understand, except above-mentioned detailed description, the present invention can also implement in other embodiment widely.Above-mentionedly being merely preferred embodiment of the present invention, is not in order to limit claim of the present invention; All other do not break away from the equivalence of being accomplished under the disclosed spirit and changes or modification, all should be included in the following claim.
Claims (10)
1. liquid coal paste composition is to comprise:
The coal material;
Liquid is in order to dissolve this coal material;
Additive is for containing the material of silicon-dioxide and aluminium sesquioxide; And
Dispersion agent is in order to disperse this coal material and this additive equably in this liquid.
2. liquid coal paste composition as claimed in claim 1, wherein this liquid system is the liquid of water, calorific value or these combination.
3. liquid coal paste composition as claimed in claim 2, wherein this calorific value system is 50-2000kcal/kg.
4. liquid coal paste composition as claimed in claim 1, wherein in the weight of this liquid coal paste composition, the weight percent of this coal material is 55-65%.
5. liquid coal paste composition as claimed in claim 1, wherein in the weight of this liquid coal paste composition, the weight percent of this liquid is 32.8-42.8%.
6. liquid coal paste composition as claimed in claim 1, wherein this additive system is selected from the mineral group that is made up of Muscovitum, kaolin, bauxitic clay, dickite, dust falling rocks, nacrite and molecular sieve.
7. liquid coal paste composition as claimed in claim 1, wherein this additive system is kaolin.
8. liquid coal paste composition as claimed in claim 1, wherein in the weight of this liquid coal paste composition, the weight percent of this additive is 2-8%.
9. liquid coal paste composition as claimed in claim 1, wherein this dispersion agent system is the dispersion agent of naphthene sulfonic acid series.
10. liquid coal paste composition as claimed in claim 1, wherein in the weight of this liquid coal paste composition, the weight percent of this dispersion agent is 0.2-0.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110334822XA CN102504895A (en) | 2011-10-19 | 2011-10-19 | Liquid coal slurry composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110334822XA CN102504895A (en) | 2011-10-19 | 2011-10-19 | Liquid coal slurry composition |
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|---|---|
| CN102504895A true CN102504895A (en) | 2012-06-20 |
Family
ID=46217032
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|---|---|---|---|
| CN201110334822XA Pending CN102504895A (en) | 2011-10-19 | 2011-10-19 | Liquid coal slurry composition |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102977953A (en) * | 2012-12-07 | 2013-03-20 | 贵州金赤化工有限责任公司 | Anthracite coal water slurry for coal gasification and preparation method thereof |
| CN106244267A (en) * | 2016-09-28 | 2016-12-21 | 煤科院节能技术有限公司 | A kind of clean combustion type water-coal-slurry and preparation method thereof |
| CN112852513A (en) * | 2021-01-12 | 2021-05-28 | 国家能源集团宁夏煤业有限责任公司 | Coal water slurry, preparation method thereof and preparation method of synthesis gas |
| CN115814565A (en) * | 2022-11-30 | 2023-03-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Potassium-sodium absorption method and absorbent for preparing vanadium-nitrogen alloy by pushed slab kiln calcination |
| CN115814565B (en) * | 2022-11-30 | 2024-05-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Potassium-sodium absorption method and absorbent for preparing vanadium-nitrogen alloy by pushed slab kiln calcination |
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| CN1468941A (en) * | 2003-06-27 | 2004-01-21 | 智 鹿 | Environment protecting coal-water fluid and its prepn and use |
| CN101921644A (en) * | 2010-07-30 | 2010-12-22 | 中国神华能源股份有限公司 | Method for improving coal ash melting temperature by utilizing aluminium oxide as additive |
| CN102051247A (en) * | 2010-12-11 | 2011-05-11 | 水煤浆气化及煤化工国家工程研究中心 | Assistant for improving viscosity-temperature characteristics of coal |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1468941A (en) * | 2003-06-27 | 2004-01-21 | 智 鹿 | Environment protecting coal-water fluid and its prepn and use |
| CN101921644A (en) * | 2010-07-30 | 2010-12-22 | 中国神华能源股份有限公司 | Method for improving coal ash melting temperature by utilizing aluminium oxide as additive |
| CN102051247A (en) * | 2010-12-11 | 2011-05-11 | 水煤浆气化及煤化工国家工程研究中心 | Assistant for improving viscosity-temperature characteristics of coal |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102977953A (en) * | 2012-12-07 | 2013-03-20 | 贵州金赤化工有限责任公司 | Anthracite coal water slurry for coal gasification and preparation method thereof |
| CN102977953B (en) * | 2012-12-07 | 2015-01-21 | 贵州金赤化工有限责任公司 | Anthracite coal water slurry for coal gasification and preparation method thereof |
| CN106244267A (en) * | 2016-09-28 | 2016-12-21 | 煤科院节能技术有限公司 | A kind of clean combustion type water-coal-slurry and preparation method thereof |
| CN112852513A (en) * | 2021-01-12 | 2021-05-28 | 国家能源集团宁夏煤业有限责任公司 | Coal water slurry, preparation method thereof and preparation method of synthesis gas |
| CN115814565A (en) * | 2022-11-30 | 2023-03-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Potassium-sodium absorption method and absorbent for preparing vanadium-nitrogen alloy by pushed slab kiln calcination |
| CN115814565B (en) * | 2022-11-30 | 2024-05-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Potassium-sodium absorption method and absorbent for preparing vanadium-nitrogen alloy by pushed slab kiln calcination |
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Application publication date: 20120620 |