CN101434885A - Multiple-effect coal fines additive and efficient clean fire coal powder prepared thereby - Google Patents
Multiple-effect coal fines additive and efficient clean fire coal powder prepared thereby Download PDFInfo
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- CN101434885A CN101434885A CNA2008102323488A CN200810232348A CN101434885A CN 101434885 A CN101434885 A CN 101434885A CN A2008102323488 A CNA2008102323488 A CN A2008102323488A CN 200810232348 A CN200810232348 A CN 200810232348A CN 101434885 A CN101434885 A CN 101434885A
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Abstract
The invention relates to a multi-effect pulverized coal additive and a prepared high-efficient clean pulverized coal thereof, and the multi-effect pulverized coal additive comprises 8-20 percent of oxygen supply source, 12-28 percent of quicklime, 6-20 percent of sodium hydroxide and 32-74 percent of water. The invention provides the multi-effect pulverized coal additive and the prepared high-efficient clean pulverized coal thereof which can greatly improve the combustion efficiency, lead the emissions of sulfur dioxide and other harmful gases and soot particles to be low, facilitate storage and transportation as well as popularization and can be capable of being applied to places of industrial boilers, industrial kilns, domestic boilers and the like.
Description
Technical field
The present invention relates to the coal burning field, relate in particular to the efficient clean fire coal powder of a kind of multiple-effect coal dust additive and preparation thereof.
Background technology
China is coal consumption state the biggest in the world, and along with the high speed development of industry, coal consumption is also increasing, accounts for about 70% of total energy consumption.Along with being on the rise of global energy shortage and environmental pollution, energy-saving and emission-reduction have become one of difficult problem that must face in various countries' Economic development.
The combustion charcoal burns in following three kinds of modes in boiler: 1) grate firing---coal forms the certain thickness bed of material and burns on fire grate; 2) suspension firing---coal dust and air mixture spray into burner hearth by burner, carry out the suspended state burning in burner hearth; 3) fluidized-bed combustion---refer to coal-fired in burner hearth cyclic motion tempestuously up and down, as water boiled boiling in pot, be the burning of boiling shape, so be called fluidized-bed combustion or fluidized bed combustion.
Coal-fired in boiler no matter burn and when obtaining heat energy or electric energy with in above-mentioned three kinds of modes which kind of, nearly all be that coal is carried out the extensive style burning, can not science burn, fully and rationally utilize, therefore coal generally all can not reach burning cmpletely, and after burning, and the pollutent that discharges in atmosphere mainly contains sulfurous gas, oxynitride, carbon monoxide and clean-burning flue dust etc. not, this had both caused the significant wastage to coal resources, serious again pollution environment.Therefore improving the efficiency of combustion of coal, reduce the quantity discharged of atmospheric polluting material, is one key subjects of pendulum in face of the scientific worker.
At present both at home and abroad the method for control atmosphere pollution is mainly divided three classes: 1) burning pre-treatment, set up the coal washery to coal washing, and select that ash content is low, sulfur reaches the high cleaned coal of calorific value less; 2) handle in the combustion processes: in the combustion chamber, add sulphur-fixing agent, need to adopt low temperature combustion technology stage by stage; 3) burning aftertreatment, take suitable chemical treatment measure desulfurization and dedusting in the discharge process of flue gas, this is the effective means of developed countries control sulfide emission, its technical matters complexity, the investment working cost is too high, and needs certain boiler improvement phase.
And improve the burning of coal characteristic, then be the main mode that realizes energy-saving and emission-reduction in the coal burning.As everyone knows, it is thin more that coal is pulverized, and what contact with air in combustion processes is just abundant more, and then burning can be more complete, and efficient can be higher.So directly combusting coal fines is to improve efficiency of combustion, the most effective mode of save energy.Though but this combustion system can significantly improve the utilization ratio of coal, at incendiary simultaneously, be easy to cause solid pollutions such as dust, if things go on like this, also be waste to coal resources.
Had multiple coal-saving additive to come out one after another flourish today in the relevant art fields such as energy-conserving and environment-protective of China, but owing to the complex manufacturing technology that has, raw material are difficult for buying, also have the cost of coal-saving additive to exist than problems such as height, these coal-saving additives do not obtain large-area popularization.
Summary of the invention
In order to solve the problems referred to above that exist in the background technology, the invention provides a kind of make obnoxious flavour such as efficiency of combustion significantly increases, sulfurous gas and soot dust granule discharging low, be easy to accumulating, be convenient to promote and can be applicable to the multiple-effect coal dust additive in places such as Industrial Boiler, Industrial Stoves, boiler for domestic and the efficient clean fire coal powder of preparation thereof.
Technical solution of the present invention is: a kind of multiple-effect coal dust additive is provided, and its special character is: described multiple-effect coal dust additive comprises 8～20% oxygen source, 12～28% unslaked lime, 6～20% sodium hydroxide and 32～74% water.
Above-mentioned multiple-effect coal dust additive also comprises 3～15% boronic acid compounds and 0.1～3% tensio-active agent.
Above-mentioned multiple-effect coal dust additive also comprises 0.5～6% rare earth.
Above-mentioned oxygen source is an oxygenant.
Above-mentioned oxygenant is one or more compositions in ammonium persulphate, potassium permanganate, the Potassium peroxide.
Above-mentioned boronic acid compounds is Sodium Tetraborate or sodium metaborate.
Above-mentioned rare earth is rare earth chloride or rare earth oxide.
Above-mentioned tensio-active agent is an anion surfactant.
Above-mentioned anion surfactant is sodium laurylsulfonate, Sodium dodecylbenzene sulfonate or ten diamino dipropionic acids.
A kind of efficient clean fire coal powder that utilizes multiple-effect coal dust additive and make, its special character is: described coal dust comprises multiple-effect coal dust additive, water and raw coal; Described coal dust is to mix the back by former coal additive, water and raw coal by weight 1:10:1000 also to make through grinding.
Advantage of the present invention is:
1, efficiency of combustion height.Efficient clean fire coal powder provided by the present invention because specific surface area tall and big, has increased the contact area of coal dust and air greatly, reduced the kindling temperature of coal, and it is more abundant that fuel combustion is got.Be added with simultaneously additive in the present invention, when temperature reaches more than 180 ℃, because of the effect of superoxide can produce a large amount of active oxygen compositions, and the active oxygen that is penetrated into the coal inside and outside becomes direct oxygen source, more effectively promotes combustion oxidation calcium and sodium hydroxide as high-temperature desulfurization agent; Rare earth metal improves the decomposition of metal oxide in the coal as catalyzer, and height adds the ratio of combustion surface-area of coal; Because the height of active oxygen atom adds, and just can improve the efficiency of combustion of carbon content in coal, has significantly reduced the discharging of carbon monoxide, reduces the content of the combustiblematerials in dust and the slag simultaneously, thereby reduce the sticking power between slag and the furnace wall; Because of the highly basic effect and have strong surface active function, can peel off the tension force between the interface again, make slag break away from the furnace wall, the adding of additive makes the efficiency of combustion of coal improve further.
2, Air Pollutant Emission significantly reduces.The present invention since the effect of coal dust and additive can make and fully comparatively perfect combustion of coal can reduce topsoil effectively, reduce aflame coal coking, but and smoke prevention and dust control; Prevent the corrosion of boiler and utility appliance, increase the service life.Experiment shows, uses the boiler of this efficient clean fire coal powder to improve that coal saving rate is more than 10% after the efficiency of combustion, and improving economizes on coal after the heat conduction efficiency is about 1～3%, amounts to coal saving rate and is about about 12%; Reduce SO
2, the NOx quantity discharged is more than 20%, reduces smoke discharge amount simultaneously more than 25%.
3, be easy to store, be convenient to promote.Efficient clean fire coal powder provided by the present invention and the additive itself that is exclusively used in coal dust all are to select some common chemical reagent for use, these reagent self or its compound or composition environmental sound, and low production cost is made simply, is convenient to promote.
Embodiment
The invention provides a kind of additive of multiple-effect coal dust, comprise 8～20% oxygen source, 12～28% unslaked lime, 6～20% sodium hydroxide, 3～15% boronic acid compounds, 0.1～3% tensio-active agent and 32～74% water.Oxygen source is that oxygenant or other can provide the compound of Sauerstoffatom, as one or more the common compositions in ammonium persulphate, potassium permanganate, the Potassium peroxide.Boronic acid compounds can be the borate of Sodium Tetraborate, sodium metaborate or other stable existences.Tensio-active agent is an anion surfactant, can use in the present invention as sodium laurylsulfonate, Sodium dodecylbenzene sulfonate or ten diamino dipropionic acids etc.
Simultaneously for the accelerated reaction process, multiple-effect coal dust additive provided by the present invention comprises that also 0.5～6% rare earth serves as catalyzer, this rare earth can be the catalyzer in rare earth chloride, rare earth oxide or other coal dust additives commonly used at present, all can realize catalysis purpose of the present invention as lanthanum trioxide, cerium oxide, Ytterbium trichloride, Neodymium trichloride etc.
The present invention also provides a kind of efficient clean fire coal powder that utilizes this multiple-effect coal dust additive to make in the additive that a kind of multiple-effect coal dust is provided, this efficient clean fire coal powder comprises coal dust additive, water and raw coal; Described coal dust is to mix the back by former coal additive, water and raw coal by weight 1:10:1000 also to make through grinding.
To specify by 5 specific embodiments below:
Embodiment one:
Get 12 parts of Potassium peroxides by the quality percentage composition, 15 parts of Sodium Tetraboratees, 20 parts of unslaked limes, 12 parts in sodium hydroxide, 3 parts of lanthanum trioxides, 37 parts in 1 part of tensio-active agent sodium laurylsulfonate and water, promptly make the required multipurpose additive of coal dust after the dissolving, mixed with the raw coal less than 10 millimeters again, additive, water, ature of coal amount per-cent are 1:10:1000, mixed coal is sent into the middling speed vertical grinder grind into 200～400 purpose efficient clean fire coal powders.
Embodiment two:
Get 9 parts of Potassium peroxides by the quality percentage composition, 13 parts of sodium metaborates, 25 parts of unslaked limes, 8 parts in sodium hydroxide, 1.5 parts of lanthanum trioxides, 42 parts in 1.5 parts of Sodium dodecylbenzene sulfonatees and water, promptly make the required multipurpose additive of coal dust after the dissolving, mixed with the raw coal less than 10 millimeters again, additive, water, ature of coal amount per-cent are 1:10:1000, mixed coal is sent into the middling speed vertical grinder grind into 200～400 purpose efficient clean fire coal powders.
Embodiment three:
Get 18 parts of ammonium persulphates by the quality percentage composition, 5 parts of Sodium Tetraboratees, 18 parts of unslaked limes, 16 parts in sodium hydroxide, 4 parts of Ytterbium trichlorides, 38.2 parts in 0.8 part of Sodium dodecylbenzene sulfonate and water, promptly make the required multipurpose additive of coal dust after the dissolving, mixed with the raw coal less than 10 millimeters again, additive, water, ature of coal amount per-cent are 1:10:1000, mixed coal is sent into the middling speed vertical grinder grind into 200～400 purpose efficient clean fire coal powders.
Embodiment four:
Get 10 parts of Potassium peroxides by the quality percentage composition, 11 parts of Sodium Tetraboratees, 15 parts of unslaked limes, 10 parts in sodium hydroxide, 2 parts of Neodymium trichlorides, 50 parts in 2 parts of sodium laurylsulfonates and water, promptly make the required multipurpose additive of coal dust after the dissolving, mixed with the raw coal less than 10 millimeters again, additive, water, ature of coal amount per-cent are 1:10:1000, mixed coal is sent into the middling speed vertical grinder grind into 200～400 purpose efficient clean fire coal powders.
Embodiment five:
Get 18 parts of ammonium persulphates by the quality percentage composition, 4 parts of sodium metaborates, 13 parts of unslaked limes, 8 parts in sodium hydroxide, 4.5 parts of cerium oxide, 51 parts in 1.5 parts of sodium laurylsulfonates and water, promptly make the required multipurpose additive of coal dust after the dissolving, mixed with the raw coal less than 10 millimeters again, additive, water, ature of coal amount per-cent are 1:10:1000, mixed coal is sent into the middling speed vertical grinder grind into 200～400 purpose efficient clean fire coal powders.
Coal dust in being 1.2 boiler furnace, excess air ratio is burnt, through detecting coal saving rate, the SO of prepared efficient clean fire coal powder after burning identical combustion time
2, NOx CER and dust discharge amount as shown in the table:
| Coal saving rate (%) | SO 2, NOx CER (%) | Dust CER (%) | |
| Embodiment one | 12 | 23 | 26 |
| Embodiment two | 15 | 22 | 25 |
| Embodiment three | 11 | 24 | 26 |
| Embodiment four | 12 | 25 | 28 |
| Embodiment five | 14 | 23 | 27 |
Claims (10)
1, a kind of multiple-effect coal dust additive is characterized in that: described multiple-effect coal dust additive comprises 8～20% oxygen source, 12～28% unslaked lime, 6～20% sodium hydroxide and 32～74% water.
2, multiple-effect coal dust additive according to claim 1 is characterized in that: described multiple-effect coal dust additive also comprises 3～15% boronic acid compounds and 0.1～3% tensio-active agent.
3, multiple-effect coal dust additive according to claim 1 and 2 is characterized in that: described multiple-effect coal dust additive also comprises 0.5～6% rare earth.
4, multiple-effect coal dust additive according to claim 3, it is characterized in that: described oxygen source is an oxygenant.
5, multiple-effect coal dust additive according to claim 4 is characterized in that: described oxygenant is one or more compositions in ammonium persulphate, potassium permanganate, the Potassium peroxide.
6, multiple-effect coal dust additive according to claim 3, it is characterized in that: described boronic acid compounds is Sodium Tetraborate or sodium metaborate.
7, multiple-effect coal dust additive according to claim 3, it is characterized in that: described rare earth is rare earth chloride or rare earth oxide.
8, multiple-effect coal dust additive according to claim 3, it is characterized in that: described tensio-active agent is an anion surfactant.
9, multiple-effect coal dust additive according to claim 8 is characterized in that: described anion surfactant is sodium laurylsulfonate, Sodium dodecylbenzene sulfonate or ten diamino dipropionic acids.
10, a kind of efficient clean fire coal powder that utilizes claim 1 described multiple-effect coal dust additive and make, it is characterized in that: described efficient clean fire coal powder comprises coal dust additive, water and raw coal; Described coal dust is to mix the back by former coal additive, water and raw coal by weight 1:10:1000 also to make through grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102323488A CN101434885A (en) | 2008-11-20 | 2008-11-20 | Multiple-effect coal fines additive and efficient clean fire coal powder prepared thereby |
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| CNA2008102323488A CN101434885A (en) | 2008-11-20 | 2008-11-20 | Multiple-effect coal fines additive and efficient clean fire coal powder prepared thereby |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045322A (en) * | 2012-12-13 | 2013-04-17 | 吕梁升凯胶粉设备制造有限公司 | Desulphurization and smoke abatement curing agent |
| CN103074142A (en) * | 2013-02-07 | 2013-05-01 | 邢春永 | Cinder removing agent for boiler furnace |
| CN103834453A (en) * | 2012-11-22 | 2014-06-04 | 苏斌 | Recyclable cow dung and pulverized coal molded composite fuel |
| CN106987298A (en) * | 2017-04-21 | 2017-07-28 | 常州思宇环保材料科技有限公司 | A kind of preparation method of environmental protection coal-fired boiler coke-removing agent |
-
2008
- 2008-11-20 CN CNA2008102323488A patent/CN101434885A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834453A (en) * | 2012-11-22 | 2014-06-04 | 苏斌 | Recyclable cow dung and pulverized coal molded composite fuel |
| CN103045322A (en) * | 2012-12-13 | 2013-04-17 | 吕梁升凯胶粉设备制造有限公司 | Desulphurization and smoke abatement curing agent |
| CN103045322B (en) * | 2012-12-13 | 2016-02-24 | 汾阳市凯升清洁型煤制造有限公司 | Desulfurizing and smoke eliminating solidifying agent |
| CN103074142A (en) * | 2013-02-07 | 2013-05-01 | 邢春永 | Cinder removing agent for boiler furnace |
| CN106987298A (en) * | 2017-04-21 | 2017-07-28 | 常州思宇环保材料科技有限公司 | A kind of preparation method of environmental protection coal-fired boiler coke-removing agent |
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Open date: 20090520 |